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From: "lihuisong (C)" <lihuisong@huawei.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>,
	Jerin Jacob <jerinj@marvell.com>,
	Xiaoyun Li <xiaoyun.li@intel.com>, Chas Williams <chas3@att.com>,
	"Min Hu (Connor)" <humin29@huawei.com>,
	Hemant Agrawal <hemant.agrawal@nxp.com>,
	Sachin Saxena <sachin.saxena@oss.nxp.com>,
	Qi Zhang <qi.z.zhang@intel.com>,
	Xiao Wang <xiao.w.wang@intel.com>, Matan Azrad <matan@nvidia.com>,
	"Viacheslav Ovsiienko" <viacheslavo@nvidia.com>,
	Harman Kalra <hkalra@marvell.com>,
	"Maciej Czekaj" <mczekaj@marvell.com>,
	Ray Kinsella <mdr@ashroe.eu>,
	Bernard Iremonger <bernard.iremonger@intel.com>,
	Konstantin Ananyev <konstantin.ananyev@intel.com>,
	Kiran Kumar K <kirankumark@marvell.com>,
	Nithin Dabilpuram <ndabilpuram@marvell.com>,
	David Hunt <david.hunt@intel.com>,
	John McNamara <john.mcnamara@intel.com>,
	"Bruce Richardson" <bruce.richardson@intel.com>,
	Igor Russkikh <irusskikh@marvell.com>,
	Steven Webster <steven.webster@windriver.com>,
	"Matt Peters" <matt.peters@windriver.com>,
	Somalapuram Amaranath <asomalap@amd.com>,
	Rasesh Mody <rmody@marvell.com>,
	Shahed Shaikh <shshaikh@marvell.com>,
	"Ajit Khaparde" <ajit.khaparde@broadcom.com>,
	Somnath Kotur <somnath.kotur@broadcom.com>,
	Sunil Kumar Kori <skori@marvell.com>,
	Satha Rao <skoteshwar@marvell.com>,
	Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>,
	Haiyue Wang <haiyue.wang@intel.com>,
	Marcin Wojtas <mw@semihalf.com>,
	"Michal Krawczyk" <mk@semihalf.com>,
	Shai Brandes <shaibran@amazon.com>,
	"Evgeny Schemeilin" <evgenys@amazon.com>,
	Igor Chauskin <igorch@amazon.com>,
	"Gagandeep Singh" <g.singh@nxp.com>,
	John Daley <johndale@cisco.com>,
	Hyong Youb Kim <hyonkim@cisco.com>,
	Ziyang Xuan <xuanziyang2@huawei.com>,
	Xiaoyun Wang <cloud.wangxiaoyun@huawei.com>,
	Guoyang Zhou <zhouguoyang@huawei.com>,
	"Yisen Zhuang" <yisen.zhuang@huawei.com>,
	Lijun Ou <oulijun@huawei.com>,
	Beilei Xing <beilei.xing@intel.com>,
	Jingjing Wu <jingjing.wu@intel.com>,
	Qiming Yang <qiming.yang@intel.com>,
	Andrew Boyer <aboyer@pensando.io>, Rosen Xu <rosen.xu@intel.com>,
	Shijith Thotton <sthotton@marvell.com>,
	Srisivasubramanian Srinivasan <srinivasan@marvell.com>,
	Zyta Szpak <zr@semihalf.com>, Liron Himi <lironh@marvell.com>,
	Heinrich Kuhn <heinrich.kuhn@corigine.com>,
	Devendra Singh Rawat <dsinghrawat@marvell.com>,
	 Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
	Keith Wiles <keith.wiles@intel.com>,
	Jiawen Wu <jiawenwu@trustnetic.com>,
	Jian Wang <jianwang@trustnetic.com>,
	Maxime Coquelin <maxime.coquelin@redhat.com>,
	Chenbo Xia <chenbo.xia@intel.com>,
	Nicolas Chautru <nicolas.chautru@intel.com>,
	Harry van Haaren <harry.van.haaren@intel.com>,
	Cristian Dumitrescu <cristian.dumitrescu@intel.com>,
	Radu Nicolau <radu.nicolau@intel.com>,
	Akhil Goyal <gakhil@marvell.com>,
	Tomasz Kantecki <tomasz.kantecki@intel.com>,
	Declan Doherty <declan.doherty@intel.com>,
	"Pavan Nikhilesh" <pbhagavatula@marvell.com>,
	Kirill Rybalchenko <kirill.rybalchenko@intel.com>,
	Jasvinder Singh <jasvinder.singh@intel.com>,
	Thomas Monjalon <thomas@monjalon.net>
Cc: <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v5 1/6] ethdev: fix max Rx packet length
Date: Sat, 9 Oct 2021 18:56:19 +0800	[thread overview]
Message-ID: <11af346e-87c7-426a-d9ec-05999ab015fc@huawei.com> (raw)
In-Reply-To: <20211007165626.2941995-1-ferruh.yigit@intel.com>


在 2021/10/8 0:56, Ferruh Yigit 写道:
> There is a confusion on setting max Rx packet length, this patch aims to
> clarify it.
>
> 'rte_eth_dev_configure()' API accepts max Rx packet size via
> 'uint32_t max_rx_pkt_len' field of the config struct 'struct
> rte_eth_conf'.
>
> Also 'rte_eth_dev_set_mtu()' API can be used to set the MTU, and result
> stored into '(struct rte_eth_dev)->data->mtu'.
>
> These two APIs are related but they work in a disconnected way, they
> store the set values in different variables which makes hard to figure
> out which one to use, also having two different method for a related
> functionality is confusing for the users.
>
> Other issues causing confusion is:
> * maximum transmission unit (MTU) is payload of the Ethernet frame. And
>    'max_rx_pkt_len' is the size of the Ethernet frame. Difference is
>    Ethernet frame overhead, and this overhead may be different from
>    device to device based on what device supports, like VLAN and QinQ.
> * 'max_rx_pkt_len' is only valid when application requested jumbo frame,
>    which adds additional confusion and some APIs and PMDs already
>    discards this documented behavior.
> * For the jumbo frame enabled case, 'max_rx_pkt_len' is an mandatory
>    field, this adds configuration complexity for application.
>
> As solution, both APIs gets MTU as parameter, and both saves the result
> in same variable '(struct rte_eth_dev)->data->mtu'. For this
> 'max_rx_pkt_len' updated as 'mtu', and it is always valid independent
> from jumbo frame.
>
> For 'rte_eth_dev_configure()', 'dev->data->dev_conf.rxmode.mtu' is user
> request and it should be used only within configure function and result
> should be stored to '(struct rte_eth_dev)->data->mtu'. After that point
> both application and PMD uses MTU from this variable.
>
> When application doesn't provide an MTU during 'rte_eth_dev_configure()'
> default 'RTE_ETHER_MTU' value is used.
>
> Additional clarification done on scattered Rx configuration, in
> relation to MTU and Rx buffer size.
> MTU is used to configure the device for physical Rx/Tx size limitation,
> Rx buffer is where to store Rx packets, many PMDs use mbuf data buffer
> size as Rx buffer size.
> PMDs compare MTU against Rx buffer size to decide enabling scattered Rx
> or not. If scattered Rx is not supported by device, MTU bigger than Rx
> buffer size should fail.
>
> Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
> Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
> Acked-by: Somnath Kotur <somnath.kotur@broadcom.com>
> ---
> Cc: Min Hu (Connor) <humin29@huawei.com>
>
> v2:
> * Converted to explicit checks for zero/non-zero
> * fixed hns3 checks
> * fixed some sample app rxmode.mtu value
> * fixed some sample app max-pkt-len argument and updated doc for it
>
> v3:
> * rebased
>
> v4:
> * fix typos in commit logs
>
> v5:
> * fix testpmd '--max-pkt-len=###' parameter for DTS jumbo frame test
> ---
>   app/test-eventdev/test_perf_common.c          |   1 -
>   app/test-eventdev/test_pipeline_common.c      |   5 +-
>   app/test-pmd/cmdline.c                        |  49 +++----
>   app/test-pmd/config.c                         |  22 ++-
>   app/test-pmd/parameters.c                     |   2 +-
>   app/test-pmd/testpmd.c                        | 115 ++++++++++------
>   app/test-pmd/testpmd.h                        |   4 +-
>   app/test/test_link_bonding.c                  |   1 -
>   app/test/test_link_bonding_mode4.c            |   1 -
>   app/test/test_link_bonding_rssconf.c          |   2 -
>   app/test/test_pmd_perf.c                      |   1 -
>   doc/guides/nics/dpaa.rst                      |   2 +-
>   doc/guides/nics/dpaa2.rst                     |   2 +-
>   doc/guides/nics/features.rst                  |   2 +-
>   doc/guides/nics/fm10k.rst                     |   2 +-
>   doc/guides/nics/mlx5.rst                      |   4 +-
>   doc/guides/nics/octeontx.rst                  |   2 +-
>   doc/guides/nics/thunderx.rst                  |   2 +-
>   doc/guides/rel_notes/deprecation.rst          |  25 ----
>   doc/guides/sample_app_ug/flow_classify.rst    |   7 +-
>   doc/guides/sample_app_ug/l3_forward.rst       |   6 +-
>   .../sample_app_ug/l3_forward_access_ctrl.rst  |   4 +-
>   doc/guides/sample_app_ug/l3_forward_graph.rst |   6 +-
>   .../sample_app_ug/l3_forward_power_man.rst    |   4 +-
>   .../sample_app_ug/performance_thread.rst      |   4 +-
>   doc/guides/sample_app_ug/skeleton.rst         |   7 +-
>   drivers/net/atlantic/atl_ethdev.c             |   3 -
>   drivers/net/avp/avp_ethdev.c                  |  17 +--
>   drivers/net/axgbe/axgbe_ethdev.c              |   7 +-
>   drivers/net/bnx2x/bnx2x_ethdev.c              |   6 +-
>   drivers/net/bnxt/bnxt_ethdev.c                |  21 +--
>   drivers/net/bonding/rte_eth_bond_pmd.c        |   4 +-
>   drivers/net/cnxk/cnxk_ethdev.c                |   9 +-
>   drivers/net/cnxk/cnxk_ethdev_ops.c            |   8 +-
>   drivers/net/cxgbe/cxgbe_ethdev.c              |  12 +-
>   drivers/net/cxgbe/cxgbe_main.c                |   3 +-
>   drivers/net/cxgbe/sge.c                       |   3 +-
>   drivers/net/dpaa/dpaa_ethdev.c                |  52 +++----
>   drivers/net/dpaa2/dpaa2_ethdev.c              |  35 ++---
>   drivers/net/e1000/em_ethdev.c                 |   4 +-
>   drivers/net/e1000/igb_ethdev.c                |  18 +--
>   drivers/net/e1000/igb_rxtx.c                  |  16 +--
>   drivers/net/ena/ena_ethdev.c                  |  27 ++--
>   drivers/net/enetc/enetc_ethdev.c              |  24 +---
>   drivers/net/enic/enic_ethdev.c                |   2 +-
>   drivers/net/enic/enic_main.c                  |  42 +++---
>   drivers/net/fm10k/fm10k_ethdev.c              |   2 +-
>   drivers/net/hinic/hinic_pmd_ethdev.c          |  20 ++-
>   drivers/net/hns3/hns3_ethdev.c                |  42 +-----
>   drivers/net/hns3/hns3_ethdev_vf.c             |  28 +---
>   drivers/net/hns3/hns3_rxtx.c                  |  10 +-
>   drivers/net/i40e/i40e_ethdev.c                |  10 +-
>   drivers/net/i40e/i40e_rxtx.c                  |   4 +-
>   drivers/net/iavf/iavf_ethdev.c                |   9 +-
>   drivers/net/ice/ice_dcf_ethdev.c              |   5 +-
>   drivers/net/ice/ice_ethdev.c                  |  14 +-
>   drivers/net/ice/ice_rxtx.c                    |  12 +-
>   drivers/net/igc/igc_ethdev.c                  |  51 ++-----
>   drivers/net/igc/igc_ethdev.h                  |   7 +
>   drivers/net/igc/igc_txrx.c                    |  22 +--
>   drivers/net/ionic/ionic_ethdev.c              |  12 +-
>   drivers/net/ionic/ionic_rxtx.c                |   6 +-
>   drivers/net/ipn3ke/ipn3ke_representor.c       |  10 +-
>   drivers/net/ixgbe/ixgbe_ethdev.c              |  35 ++---
>   drivers/net/ixgbe/ixgbe_pf.c                  |   6 +-
>   drivers/net/ixgbe/ixgbe_rxtx.c                |  15 +-
>   drivers/net/liquidio/lio_ethdev.c             |  20 +--
>   drivers/net/mlx4/mlx4_rxq.c                   |  17 +--
>   drivers/net/mlx5/mlx5_rxq.c                   |  25 ++--
>   drivers/net/mvneta/mvneta_ethdev.c            |   7 -
>   drivers/net/mvneta/mvneta_rxtx.c              |  13 +-
>   drivers/net/mvpp2/mrvl_ethdev.c               |  34 ++---
>   drivers/net/nfp/nfp_common.c                  |   9 +-
>   drivers/net/octeontx/octeontx_ethdev.c        |  12 +-
>   drivers/net/octeontx2/otx2_ethdev.c           |   2 +-
>   drivers/net/octeontx2/otx2_ethdev_ops.c       |  11 +-
>   drivers/net/pfe/pfe_ethdev.c                  |   7 +-
>   drivers/net/qede/qede_ethdev.c                |  16 +--
>   drivers/net/qede/qede_rxtx.c                  |   8 +-
>   drivers/net/sfc/sfc_ethdev.c                  |   4 +-
>   drivers/net/sfc/sfc_port.c                    |   6 +-
>   drivers/net/tap/rte_eth_tap.c                 |   7 +-
>   drivers/net/thunderx/nicvf_ethdev.c           |  13 +-
>   drivers/net/txgbe/txgbe_ethdev.c              |   7 +-
>   drivers/net/txgbe/txgbe_ethdev.h              |   4 +
>   drivers/net/txgbe/txgbe_ethdev_vf.c           |   2 -
>   drivers/net/txgbe/txgbe_rxtx.c                |  19 +--
>   drivers/net/virtio/virtio_ethdev.c            |   9 +-
>   examples/bbdev_app/main.c                     |   1 -
>   examples/bond/main.c                          |   1 -
>   examples/distributor/main.c                   |   1 -
>   .../pipeline_worker_generic.c                 |   1 -
>   .../eventdev_pipeline/pipeline_worker_tx.c    |   1 -
>   examples/flow_classify/flow_classify.c        |  12 +-
>   examples/ioat/ioatfwd.c                       |   1 -
>   examples/ip_fragmentation/main.c              |  12 +-
>   examples/ip_pipeline/link.c                   |   2 +-
>   examples/ip_reassembly/main.c                 |  12 +-
>   examples/ipsec-secgw/ipsec-secgw.c            |   7 +-
>   examples/ipv4_multicast/main.c                |   9 +-
>   examples/kni/main.c                           |   6 +-
>   examples/l2fwd-cat/l2fwd-cat.c                |   8 +-
>   examples/l2fwd-crypto/main.c                  |   1 -
>   examples/l2fwd-event/l2fwd_common.c           |   1 -
>   examples/l3fwd-acl/main.c                     | 129 +++++++++---------
>   examples/l3fwd-graph/main.c                   |  83 +++++++----
>   examples/l3fwd-power/main.c                   |  90 +++++++-----
>   examples/l3fwd/main.c                         |  84 +++++++-----
>   .../performance-thread/l3fwd-thread/main.c    |  88 +++++++-----
>   .../performance-thread/l3fwd-thread/test.sh   |  24 ++--
>   examples/pipeline/obj.c                       |   2 +-
>   examples/ptpclient/ptpclient.c                |  10 +-
>   examples/qos_meter/main.c                     |   1 -
>   examples/qos_sched/init.c                     |   1 -
>   examples/rxtx_callbacks/main.c                |  10 +-
>   examples/skeleton/basicfwd.c                  |  12 +-
>   examples/vhost/main.c                         |   4 +-
>   examples/vm_power_manager/main.c              |  11 +-
>   lib/ethdev/rte_ethdev.c                       |  92 +++++++------
>   lib/ethdev/rte_ethdev.h                       |   2 +-
>   lib/ethdev/rte_ethdev_trace.h                 |   2 +-
>   121 files changed, 815 insertions(+), 1073 deletions(-)
>
> diff --git a/app/test-eventdev/test_perf_common.c b/app/test-eventdev/test_perf_common.c
> index cc100650c21e..660d5a0364b6 100644
> --- a/app/test-eventdev/test_perf_common.c
> +++ b/app/test-eventdev/test_perf_common.c
> @@ -669,7 +669,6 @@ perf_ethdev_setup(struct evt_test *test, struct evt_options *opt)
>   	struct rte_eth_conf port_conf = {
>   		.rxmode = {
>   			.mq_mode = ETH_MQ_RX_RSS,
> -			.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   			.split_hdr_size = 0,
>   		},
>   		.rx_adv_conf = {
> diff --git a/app/test-eventdev/test_pipeline_common.c b/app/test-eventdev/test_pipeline_common.c
> index 6ee530d4cdc9..5fcea74b4d43 100644
> --- a/app/test-eventdev/test_pipeline_common.c
> +++ b/app/test-eventdev/test_pipeline_common.c
> @@ -197,8 +197,9 @@ pipeline_ethdev_setup(struct evt_test *test, struct evt_options *opt)
>   		return -EINVAL;
>   	}
>   
> -	port_conf.rxmode.max_rx_pkt_len = opt->max_pkt_sz;
> -	if (opt->max_pkt_sz > RTE_ETHER_MAX_LEN)
> +	port_conf.rxmode.mtu = opt->max_pkt_sz - RTE_ETHER_HDR_LEN -
> +		RTE_ETHER_CRC_LEN;
> +	if (port_conf.rxmode.mtu > RTE_ETHER_MTU)
>   		port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
>   	t->internal_port = 1;
> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
> index a9efd027c376..a677451073ae 100644
> --- a/app/test-pmd/cmdline.c
> +++ b/app/test-pmd/cmdline.c
> @@ -1892,45 +1892,38 @@ cmd_config_max_pkt_len_parsed(void *parsed_result,
>   				__rte_unused void *data)
>   {
>   	struct cmd_config_max_pkt_len_result *res = parsed_result;
> -	uint32_t max_rx_pkt_len_backup = 0;
> -	portid_t pid;
> +	portid_t port_id;
>   	int ret;
>   
> +	if (strcmp(res->name, "max-pkt-len") != 0) {
> +		printf("Unknown parameter\n");
> +		return;
> +	}
> +
>   	if (!all_ports_stopped()) {
>   		fprintf(stderr, "Please stop all ports first\n");
>   		return;
>   	}
>   
> -	RTE_ETH_FOREACH_DEV(pid) {
> -		struct rte_port *port = &ports[pid];
> +	RTE_ETH_FOREACH_DEV(port_id) {
> +		struct rte_port *port = &ports[port_id];
>   
> -		if (!strcmp(res->name, "max-pkt-len")) {
> -			if (res->value < RTE_ETHER_MIN_LEN) {
> -				fprintf(stderr,
> -					"max-pkt-len can not be less than %d\n",
> -					RTE_ETHER_MIN_LEN);
> -				return;
> -			}
> -			if (res->value == port->dev_conf.rxmode.max_rx_pkt_len)
> -				return;
> -
> -			ret = eth_dev_info_get_print_err(pid, &port->dev_info);
> -			if (ret != 0) {
> -				fprintf(stderr,
> -					"rte_eth_dev_info_get() failed for port %u\n",
> -					pid);
> -				return;
> -			}
> -
> -			max_rx_pkt_len_backup = port->dev_conf.rxmode.max_rx_pkt_len;
> +		if (res->value < RTE_ETHER_MIN_LEN) {
> +			fprintf(stderr,
> +				"max-pkt-len can not be less than %d\n",
> +				RTE_ETHER_MIN_LEN);
> +			return;
> +		}
>   
> -			port->dev_conf.rxmode.max_rx_pkt_len = res->value;
> -			if (update_jumbo_frame_offload(pid) != 0)
> -				port->dev_conf.rxmode.max_rx_pkt_len = max_rx_pkt_len_backup;
> -		} else {
> -			fprintf(stderr, "Unknown parameter\n");
> +		ret = eth_dev_info_get_print_err(port_id, &port->dev_info);
> +		if (ret != 0) {
> +			fprintf(stderr,
> +				"rte_eth_dev_info_get() failed for port %u\n",
> +				port_id);
>   			return;
>   		}
> +
> +		update_jumbo_frame_offload(port_id, res->value);
>   	}
>   
>   	init_port_config();
> diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
> index 9c66329e96ee..db3eeffa0093 100644
> --- a/app/test-pmd/config.c
> +++ b/app/test-pmd/config.c
> @@ -1147,7 +1147,6 @@ port_mtu_set(portid_t port_id, uint16_t mtu)
>   	int diag;
>   	struct rte_port *rte_port = &ports[port_id];
>   	struct rte_eth_dev_info dev_info;
> -	uint16_t eth_overhead;
>   	int ret;
>   
>   	if (port_id_is_invalid(port_id, ENABLED_WARN))
> @@ -1164,21 +1163,18 @@ port_mtu_set(portid_t port_id, uint16_t mtu)
>   		return;
>   	}
>   	diag = rte_eth_dev_set_mtu(port_id, mtu);
> -	if (diag)
> +	if (diag != 0) {
>   		fprintf(stderr, "Set MTU failed. diag=%d\n", diag);
> -	else if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		/*
> -		 * Ether overhead in driver is equal to the difference of
> -		 * max_rx_pktlen and max_mtu in rte_eth_dev_info when the
> -		 * device supports jumbo frame.
> -		 */
> -		eth_overhead = dev_info.max_rx_pktlen - dev_info.max_mtu;
> -		if (mtu > RTE_ETHER_MTU) {
> +		return;
> +	}
> +
> +	rte_port->dev_conf.rxmode.mtu = mtu;
> +
> +	if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> +		if (mtu > RTE_ETHER_MTU)
>   			rte_port->dev_conf.rxmode.offloads |=
>   						DEV_RX_OFFLOAD_JUMBO_FRAME;
> -			rte_port->dev_conf.rxmode.max_rx_pkt_len =
> -						mtu + eth_overhead;
> -		} else
> +		else
>   			rte_port->dev_conf.rxmode.offloads &=
>   						~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	}
> diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
> index 3f94a82e321f..dec5373b346d 100644
> --- a/app/test-pmd/parameters.c
> +++ b/app/test-pmd/parameters.c
> @@ -870,7 +870,7 @@ launch_args_parse(int argc, char** argv)
>   			if (!strcmp(lgopts[opt_idx].name, "max-pkt-len")) {
>   				n = atoi(optarg);
>   				if (n >= RTE_ETHER_MIN_LEN)
> -					rx_mode.max_rx_pkt_len = (uint32_t) n;
> +					max_rx_pkt_len = n;
>   				else
>   					rte_exit(EXIT_FAILURE,
>   						 "Invalid max-pkt-len=%d - should be > %d\n",
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> index 97ae52e17ecd..8c11ab23dd14 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -214,6 +214,11 @@ uint16_t stats_period; /**< Period to show statistics (disabled by default) */
>    */
>   uint8_t f_quit;
>   
> +/*
> + * Max Rx frame size, set by '--max-pkt-len' parameter.
> + */
> +uint16_t max_rx_pkt_len;
> +
>   /*
>    * Configuration of packet segments used to scatter received packets
>    * if some of split features is configured.
> @@ -446,13 +451,7 @@ lcoreid_t latencystats_lcore_id = -1;
>   /*
>    * Ethernet device configuration.
>    */
> -struct rte_eth_rxmode rx_mode = {
> -	/* Default maximum frame length.
> -	 * Zero is converted to "RTE_ETHER_MTU + PMD Ethernet overhead"
> -	 * in init_config().
> -	 */
> -	.max_rx_pkt_len = 0,
> -};
> +struct rte_eth_rxmode rx_mode;
>   
>   struct rte_eth_txmode tx_mode = {
>   	.offloads = DEV_TX_OFFLOAD_MBUF_FAST_FREE,
> @@ -1481,11 +1480,24 @@ check_nb_hairpinq(queueid_t hairpinq)
>   	return 0;
>   }
>   
> +static int
> +get_eth_overhead(struct rte_eth_dev_info *dev_info)
> +{
> +	uint32_t eth_overhead;
> +
> +	if (dev_info->max_mtu != UINT16_MAX &&
> +	    dev_info->max_rx_pktlen > dev_info->max_mtu)
> +		eth_overhead = dev_info->max_rx_pktlen - dev_info->max_mtu;
> +	else
> +		eth_overhead = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +
> +	return eth_overhead;
> +}
> +
>   static void
>   init_config_port_offloads(portid_t pid, uint32_t socket_id)
>   {
>   	struct rte_port *port = &ports[pid];
> -	uint16_t data_size;
>   	int ret;
>   	int i;
>   
> @@ -1496,7 +1508,7 @@ init_config_port_offloads(portid_t pid, uint32_t socket_id)
>   	if (ret != 0)
>   		rte_exit(EXIT_FAILURE, "rte_eth_dev_info_get() failed\n");
>   
> -	ret = update_jumbo_frame_offload(pid);
> +	ret = update_jumbo_frame_offload(pid, 0);
>   	if (ret != 0)
>   		fprintf(stderr,
>   			"Updating jumbo frame offload failed for port %u\n",
> @@ -1516,6 +1528,12 @@ init_config_port_offloads(portid_t pid, uint32_t socket_id)
>   	if (eth_link_speed)
>   		port->dev_conf.link_speeds = eth_link_speed;
>   
> +	if (max_rx_pkt_len) {
> +		port->dev_conf.rxmode.mtu = max_rx_pkt_len -
> +			get_eth_overhead(&port->dev_info);
> +		max_rx_pkt_len = 0;
> +	}
> +
>   	/* set flag to initialize port/queue */
>   	port->need_reconfig = 1;
>   	port->need_reconfig_queues = 1;
> @@ -1528,14 +1546,20 @@ init_config_port_offloads(portid_t pid, uint32_t socket_id)
>   	 */
>   	if (port->dev_info.rx_desc_lim.nb_mtu_seg_max != UINT16_MAX &&
>   	    port->dev_info.rx_desc_lim.nb_mtu_seg_max != 0) {
> -		data_size = rx_mode.max_rx_pkt_len /
> -			port->dev_info.rx_desc_lim.nb_mtu_seg_max;
> -
> -		if ((data_size + RTE_PKTMBUF_HEADROOM) > mbuf_data_size[0]) {
> -			mbuf_data_size[0] = data_size + RTE_PKTMBUF_HEADROOM;
> -			TESTPMD_LOG(WARNING,
> -				    "Configured mbuf size of the first segment %hu\n",
> -				    mbuf_data_size[0]);
> +		uint32_t eth_overhead = get_eth_overhead(&port->dev_info);
> +		uint16_t mtu;
> +
> +		if (rte_eth_dev_get_mtu(pid, &mtu) == 0) {
> +			uint16_t data_size = (mtu + eth_overhead) /
> +				port->dev_info.rx_desc_lim.nb_mtu_seg_max;
> +			uint16_t buffer_size = data_size + RTE_PKTMBUF_HEADROOM;
> +
> +			if (buffer_size > mbuf_data_size[0]) {
> +				mbuf_data_size[0] = buffer_size;
> +				TESTPMD_LOG(WARNING,
> +					"Configured mbuf size of the first segment %hu\n",
> +					mbuf_data_size[0]);
> +			}
>   		}
>   	}
>   }
> @@ -2552,6 +2576,7 @@ start_port(portid_t pid)
>   					pi);
>   				return -1;
>   			}
> +
>   			/* configure port */
>   			diag = eth_dev_configure_mp(pi, nb_rxq + nb_hairpinq,
>   						     nb_txq + nb_hairpinq,
> @@ -3451,44 +3476,45 @@ rxtx_port_config(struct rte_port *port)
>   
>   /*
>    * Helper function to arrange max_rx_pktlen value and JUMBO_FRAME offload,
> - * MTU is also aligned if JUMBO_FRAME offload is not set.
> + * MTU is also aligned.
>    *
>    * port->dev_info should be set before calling this function.
>    *
> + * if 'max_rx_pktlen' is zero, it is set to current device value, "MTU +
> + * ETH_OVERHEAD". This is useful to update flags but not MTU value.
> + *
>    * return 0 on success, negative on error
>    */
>   int
> -update_jumbo_frame_offload(portid_t portid)
> +update_jumbo_frame_offload(portid_t portid, uint32_t max_rx_pktlen)
>   {
>   	struct rte_port *port = &ports[portid];
>   	uint32_t eth_overhead;
>   	uint64_t rx_offloads;
> -	int ret;
> +	uint16_t mtu, new_mtu;
>   	bool on;
>   
> -	/* Update the max_rx_pkt_len to have MTU as RTE_ETHER_MTU */
> -	if (port->dev_info.max_mtu != UINT16_MAX &&
> -	    port->dev_info.max_rx_pktlen > port->dev_info.max_mtu)
> -		eth_overhead = port->dev_info.max_rx_pktlen -
> -				port->dev_info.max_mtu;
> -	else
> -		eth_overhead = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +	eth_overhead = get_eth_overhead(&port->dev_info);
>   
> -	rx_offloads = port->dev_conf.rxmode.offloads;
> +	if (rte_eth_dev_get_mtu(portid, &mtu) != 0) {
> +		printf("Failed to get MTU for port %u\n", portid);
> +		return -1;
> +	}
> +
> +	if (max_rx_pktlen == 0)
> +		max_rx_pktlen = mtu + eth_overhead;
>   
> -	/* Default config value is 0 to use PMD specific overhead */
> -	if (port->dev_conf.rxmode.max_rx_pkt_len == 0)
> -		port->dev_conf.rxmode.max_rx_pkt_len = RTE_ETHER_MTU + eth_overhead;
> +	rx_offloads = port->dev_conf.rxmode.offloads;
> +	new_mtu = max_rx_pktlen - eth_overhead;
>   
> -	if (port->dev_conf.rxmode.max_rx_pkt_len <= RTE_ETHER_MTU + eth_overhead) {
> +	if (new_mtu <= RTE_ETHER_MTU) {
>   		rx_offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   		on = false;
>   	} else {
>   		if ((port->dev_info.rx_offload_capa & DEV_RX_OFFLOAD_JUMBO_FRAME) == 0) {
>   			fprintf(stderr,
>   				"Frame size (%u) is not supported by port %u\n",
> -				port->dev_conf.rxmode.max_rx_pkt_len,
> -				portid);
> +				max_rx_pktlen, portid);
>   			return -1;
>   		}
>   		rx_offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> @@ -3509,19 +3535,18 @@ update_jumbo_frame_offload(portid_t portid)
>   		}
>   	}
>   
> -	/* If JUMBO_FRAME is set MTU conversion done by ethdev layer,
> -	 * if unset do it here
> -	 */
> -	if ((rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) == 0) {
> -		ret = eth_dev_set_mtu_mp(portid,
> -				port->dev_conf.rxmode.max_rx_pkt_len - eth_overhead);
> -		if (ret)
> -			fprintf(stderr,
> -				"Failed to set MTU to %u for port %u\n",
> -				port->dev_conf.rxmode.max_rx_pkt_len - eth_overhead,
> -				portid);
> +	if (mtu == new_mtu)
> +		return 0;
> +
> +	if (eth_dev_set_mtu_mp(portid, new_mtu) != 0) {
> +		fprintf(stderr,
> +			"Failed to set MTU to %u for port %u\n",
> +			new_mtu, portid);
> +		return -1;
>   	}
>   
> +	port->dev_conf.rxmode.mtu = new_mtu;
> +
>   	return 0;
>   }
>   
> diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
> index 5863b2f43f3e..076c154b2b3a 100644
> --- a/app/test-pmd/testpmd.h
> +++ b/app/test-pmd/testpmd.h
> @@ -448,6 +448,8 @@ extern uint8_t bitrate_enabled;
>   
>   extern struct rte_fdir_conf fdir_conf;
>   
> +extern uint16_t max_rx_pkt_len;
> +
>   /*
>    * Configuration of packet segments used to scatter received packets
>    * if some of split features is configured.
> @@ -1022,7 +1024,7 @@ uint16_t tx_pkt_set_dynf(uint16_t port_id, __rte_unused uint16_t queue,
>   			 __rte_unused void *user_param);
>   void add_tx_dynf_callback(portid_t portid);
>   void remove_tx_dynf_callback(portid_t portid);
> -int update_jumbo_frame_offload(portid_t portid);
> +int update_jumbo_frame_offload(portid_t portid, uint32_t max_rx_pktlen);
>   
>   /*
>    * Work-around of a compilation error with ICC on invocations of the
> diff --git a/app/test/test_link_bonding.c b/app/test/test_link_bonding.c
> index 8a5c8310a8b4..5388d18125a6 100644
> --- a/app/test/test_link_bonding.c
> +++ b/app/test/test_link_bonding.c
> @@ -136,7 +136,6 @@ static struct rte_eth_conf default_pmd_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_NONE,
>   		.split_hdr_size = 0,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   	},
>   	.txmode = {
>   		.mq_mode = ETH_MQ_TX_NONE,
> diff --git a/app/test/test_link_bonding_mode4.c b/app/test/test_link_bonding_mode4.c
> index 2c835fa7adc7..3e9254fe896d 100644
> --- a/app/test/test_link_bonding_mode4.c
> +++ b/app/test/test_link_bonding_mode4.c
> @@ -108,7 +108,6 @@ static struct link_bonding_unittest_params test_params  = {
>   static struct rte_eth_conf default_pmd_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_NONE,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   	},
>   	.txmode = {
> diff --git a/app/test/test_link_bonding_rssconf.c b/app/test/test_link_bonding_rssconf.c
> index 5dac60ca1edd..e7bb0497b663 100644
> --- a/app/test/test_link_bonding_rssconf.c
> +++ b/app/test/test_link_bonding_rssconf.c
> @@ -81,7 +81,6 @@ static struct link_bonding_rssconf_unittest_params test_params  = {
>   static struct rte_eth_conf default_pmd_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_NONE,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   	},
>   	.txmode = {
> @@ -93,7 +92,6 @@ static struct rte_eth_conf default_pmd_conf = {
>   static struct rte_eth_conf rss_pmd_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   	},
>   	.txmode = {
> diff --git a/app/test/test_pmd_perf.c b/app/test/test_pmd_perf.c
> index 3a248d512c4a..a3b4f52c65e6 100644
> --- a/app/test/test_pmd_perf.c
> +++ b/app/test/test_pmd_perf.c
> @@ -63,7 +63,6 @@ static struct rte_ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_NONE,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   	},
>   	.txmode = {
> diff --git a/doc/guides/nics/dpaa.rst b/doc/guides/nics/dpaa.rst
> index 7355ec305916..9dad612058c6 100644
> --- a/doc/guides/nics/dpaa.rst
> +++ b/doc/guides/nics/dpaa.rst
> @@ -335,7 +335,7 @@ Maximum packet length
>   ~~~~~~~~~~~~~~~~~~~~~
>   
>   The DPAA SoC family support a maximum of a 10240 jumbo frame. The value
> -is fixed and cannot be changed. So, even when the ``rxmode.max_rx_pkt_len``
> +is fixed and cannot be changed. So, even when the ``rxmode.mtu``
>   member of ``struct rte_eth_conf`` is set to a value lower than 10240, frames
>   up to 10240 bytes can still reach the host interface.
>   
> diff --git a/doc/guides/nics/dpaa2.rst b/doc/guides/nics/dpaa2.rst
> index df23a5704dca..831bc564883a 100644
> --- a/doc/guides/nics/dpaa2.rst
> +++ b/doc/guides/nics/dpaa2.rst
> @@ -545,7 +545,7 @@ Maximum packet length
>   ~~~~~~~~~~~~~~~~~~~~~
>   
>   The DPAA2 SoC family support a maximum of a 10240 jumbo frame. The value
> -is fixed and cannot be changed. So, even when the ``rxmode.max_rx_pkt_len``
> +is fixed and cannot be changed. So, even when the ``rxmode.mtu``
>   member of ``struct rte_eth_conf`` is set to a value lower than 10240, frames
>   up to 10240 bytes can still reach the host interface.
>   
> diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
> index 4fce8cd1c976..483cb7da576f 100644
> --- a/doc/guides/nics/features.rst
> +++ b/doc/guides/nics/features.rst
> @@ -166,7 +166,7 @@ Jumbo frame
>   Supports Rx jumbo frames.
>   
>   * **[uses]    rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_JUMBO_FRAME``.
> -  ``dev_conf.rxmode.max_rx_pkt_len``.
> +  ``dev_conf.rxmode.mtu``.
>   * **[related] rte_eth_dev_info**: ``max_rx_pktlen``.
>   * **[related] API**: ``rte_eth_dev_set_mtu()``.
>   
> diff --git a/doc/guides/nics/fm10k.rst b/doc/guides/nics/fm10k.rst
> index 7b8ef0e7823d..ed6afd62703d 100644
> --- a/doc/guides/nics/fm10k.rst
> +++ b/doc/guides/nics/fm10k.rst
> @@ -141,7 +141,7 @@ Maximum packet length
>   ~~~~~~~~~~~~~~~~~~~~~
>   
>   The FM10000 family of NICS support a maximum of a 15K jumbo frame. The value
> -is fixed and cannot be changed. So, even when the ``rxmode.max_rx_pkt_len``
> +is fixed and cannot be changed. So, even when the ``rxmode.mtu``
>   member of ``struct rte_eth_conf`` is set to a value lower than 15364, frames
>   up to 15364 bytes can still reach the host interface.
>   
> diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
> index bae73f42d882..1f5619ed53fc 100644
> --- a/doc/guides/nics/mlx5.rst
> +++ b/doc/guides/nics/mlx5.rst
> @@ -606,9 +606,9 @@ Driver options
>     and each stride receives one packet. MPRQ can improve throughput for
>     small-packet traffic.
>   
> -  When MPRQ is enabled, max_rx_pkt_len can be larger than the size of
> +  When MPRQ is enabled, MTU can be larger than the size of
>     user-provided mbuf even if DEV_RX_OFFLOAD_SCATTER isn't enabled. PMD will
> -  configure large stride size enough to accommodate max_rx_pkt_len as long as
> +  configure large stride size enough to accommodate MTU as long as
>     device allows. Note that this can waste system memory compared to enabling Rx
>     scatter and multi-segment packet.
>   
> diff --git a/doc/guides/nics/octeontx.rst b/doc/guides/nics/octeontx.rst
> index b1a868b054d1..8236cc3e93e0 100644
> --- a/doc/guides/nics/octeontx.rst
> +++ b/doc/guides/nics/octeontx.rst
> @@ -157,7 +157,7 @@ Maximum packet length
>   ~~~~~~~~~~~~~~~~~~~~~
>   
>   The OCTEON TX SoC family NICs support a maximum of a 32K jumbo frame. The value
> -is fixed and cannot be changed. So, even when the ``rxmode.max_rx_pkt_len``
> +is fixed and cannot be changed. So, even when the ``rxmode.mtu``
>   member of ``struct rte_eth_conf`` is set to a value lower than 32k, frames
>   up to 32k bytes can still reach the host interface.
>   
> diff --git a/doc/guides/nics/thunderx.rst b/doc/guides/nics/thunderx.rst
> index 12d43ce93e28..98f23a2b2a3d 100644
> --- a/doc/guides/nics/thunderx.rst
> +++ b/doc/guides/nics/thunderx.rst
> @@ -392,7 +392,7 @@ Maximum packet length
>   ~~~~~~~~~~~~~~~~~~~~~
>   
>   The ThunderX SoC family NICs support a maximum of a 9K jumbo frame. The value
> -is fixed and cannot be changed. So, even when the ``rxmode.max_rx_pkt_len``
> +is fixed and cannot be changed. So, even when the ``rxmode.mtu``
>   member of ``struct rte_eth_conf`` is set to a value lower than 9200, frames
>   up to 9200 bytes can still reach the host interface.
>   
> diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
> index a2fe766d4b4f..1063a1fe4bea 100644
> --- a/doc/guides/rel_notes/deprecation.rst
> +++ b/doc/guides/rel_notes/deprecation.rst
> @@ -81,31 +81,6 @@ Deprecation Notices
>     In 19.11 PMDs will still update the field even when the offload is not
>     enabled.
>   
> -* ethdev: ``uint32_t max_rx_pkt_len`` field of ``struct rte_eth_rxmode``, will be
> -  replaced by a new ``uint32_t mtu`` field of ``struct rte_eth_conf`` in v21.11.
> -  The new ``mtu`` field will be used to configure the initial device MTU via
> -  ``rte_eth_dev_configure()`` API.
> -  Later MTU can be changed by ``rte_eth_dev_set_mtu()`` API as done now.
> -  The existing ``(struct rte_eth_dev)->data->mtu`` variable will be used to store
> -  the configured ``mtu`` value,
> -  and this new ``(struct rte_eth_dev)->data->dev_conf.mtu`` variable will
> -  be used to store the user configuration request.
> -  Unlike ``max_rx_pkt_len``, which was valid only when ``JUMBO_FRAME`` enabled,
> -  ``mtu`` field will be always valid.
> -  When ``mtu`` config is not provided by the application, default ``RTE_ETHER_MTU``
> -  value will be used.
> -  ``(struct rte_eth_dev)->data->mtu`` should be updated after MTU set successfully,
> -  either by ``rte_eth_dev_configure()`` or ``rte_eth_dev_set_mtu()``.
> -
> -  An application may need to configure device for a specific Rx packet size, like for
> -  cases ``DEV_RX_OFFLOAD_SCATTER`` is not supported and device received packet size
> -  can't be bigger than Rx buffer size.
> -  To cover these cases an application needs to know the device packet overhead to be
> -  able to calculate the ``mtu`` corresponding to a Rx buffer size, for this
> -  ``(struct rte_eth_dev_info).max_rx_pktlen`` will be kept,
> -  the device packet overhead can be calculated as:
> -  ``(struct rte_eth_dev_info).max_rx_pktlen - (struct rte_eth_dev_info).max_mtu``
> -
>   * ethdev: ``rx_descriptor_done`` dev_ops and ``rte_eth_rx_descriptor_done``
>     will be removed in 21.11.
>     Existing ``rte_eth_rx_descriptor_status`` and ``rte_eth_tx_descriptor_status``
> diff --git a/doc/guides/sample_app_ug/flow_classify.rst b/doc/guides/sample_app_ug/flow_classify.rst
> index 812aaa87b05b..6c4c04e935e4 100644
> --- a/doc/guides/sample_app_ug/flow_classify.rst
> +++ b/doc/guides/sample_app_ug/flow_classify.rst
> @@ -162,12 +162,7 @@ Forwarding application is shown below:
>       :end-before: >8 End of initializing a given port.
>   
>   The Ethernet ports are configured with default settings using the
> -``rte_eth_dev_configure()`` function and the ``port_conf_default`` struct.
> -
> -.. literalinclude:: ../../../examples/flow_classify/flow_classify.c
> -    :language: c
> -    :start-after: Ethernet ports configured with default settings using struct. 8<
> -    :end-before: >8 End of configuration of Ethernet ports.
> +``rte_eth_dev_configure()`` function.
>   
>   For this example the ports are set up with 1 RX and 1 TX queue using the
>   ``rte_eth_rx_queue_setup()`` and ``rte_eth_tx_queue_setup()`` functions.
> diff --git a/doc/guides/sample_app_ug/l3_forward.rst b/doc/guides/sample_app_ug/l3_forward.rst
> index 2d5cd5f1c0ba..56af5cd5b383 100644
> --- a/doc/guides/sample_app_ug/l3_forward.rst
> +++ b/doc/guides/sample_app_ug/l3_forward.rst
> @@ -65,7 +65,7 @@ The application has a number of command line options::
>                                [--lookup LOOKUP_METHOD]
>                                --config(port,queue,lcore)[,(port,queue,lcore)]
>                                [--eth-dest=X,MM:MM:MM:MM:MM:MM]
> -                             [--enable-jumbo [--max-pkt-len PKTLEN]]
> +                             [--max-pkt-len PKTLEN]
>                                [--no-numa]
>                                [--hash-entry-num]
>                                [--ipv6]
> @@ -95,9 +95,7 @@ Where,
>   
>   * ``--eth-dest=X,MM:MM:MM:MM:MM:MM:`` Optional, ethernet destination for port X.
>   
> -* ``--enable-jumbo:`` Optional, enables jumbo frames.
> -
> -* ``--max-pkt-len:`` Optional, under the premise of enabling jumbo, maximum packet length in decimal (64-9600).
> +* ``--max-pkt-len:`` Optional, maximum packet length in decimal (64-9600).
>   
>   * ``--no-numa:`` Optional, disables numa awareness.
>   
> diff --git a/doc/guides/sample_app_ug/l3_forward_access_ctrl.rst b/doc/guides/sample_app_ug/l3_forward_access_ctrl.rst
> index 2cf6e4556f14..486247ac2e4f 100644
> --- a/doc/guides/sample_app_ug/l3_forward_access_ctrl.rst
> +++ b/doc/guides/sample_app_ug/l3_forward_access_ctrl.rst
> @@ -236,7 +236,7 @@ The application has a number of command line options:
>   
>   ..  code-block:: console
>   
> -    ./<build_dir>/examples/dpdk-l3fwd-acl [EAL options] -- -p PORTMASK [-P] --config(port,queue,lcore)[,(port,queue,lcore)] --rule_ipv4 FILENAME --rule_ipv6 FILENAME [--alg=<val>] [--enable-jumbo [--max-pkt-len PKTLEN]] [--no-numa] [--eth-dest=X,MM:MM:MM:MM:MM:MM]
> +    ./<build_dir>/examples/dpdk-l3fwd-acl [EAL options] -- -p PORTMASK [-P] --config(port,queue,lcore)[,(port,queue,lcore)] --rule_ipv4 FILENAME --rule_ipv6 FILENAME [--alg=<val>] [--max-pkt-len PKTLEN] [--no-numa] [--eth-dest=X,MM:MM:MM:MM:MM:MM]
>   
>   
>   where,
> @@ -255,8 +255,6 @@ where,
>   *   --alg=<val>: optional, ACL classify method to use, one of:
>       ``scalar|sse|avx2|neon|altivec|avx512x16|avx512x32``
>   
> -*   --enable-jumbo: optional, enables jumbo frames
> -
>   *   --max-pkt-len: optional, maximum packet length in decimal (64-9600)
>   
>   *   --no-numa: optional, disables numa awareness
> diff --git a/doc/guides/sample_app_ug/l3_forward_graph.rst b/doc/guides/sample_app_ug/l3_forward_graph.rst
> index 03e9a85aa68c..0a3e0d44ecea 100644
> --- a/doc/guides/sample_app_ug/l3_forward_graph.rst
> +++ b/doc/guides/sample_app_ug/l3_forward_graph.rst
> @@ -48,7 +48,7 @@ The application has a number of command line options similar to l3fwd::
>                                      [-P]
>                                      --config(port,queue,lcore)[,(port,queue,lcore)]
>                                      [--eth-dest=X,MM:MM:MM:MM:MM:MM]
> -                                   [--enable-jumbo [--max-pkt-len PKTLEN]]
> +                                   [--max-pkt-len PKTLEN]
>                                      [--no-numa]
>                                      [--per-port-pool]
>   
> @@ -63,9 +63,7 @@ Where,
>   
>   * ``--eth-dest=X,MM:MM:MM:MM:MM:MM:`` Optional, ethernet destination for port X.
>   
> -* ``--enable-jumbo:`` Optional, enables jumbo frames.
> -
> -* ``--max-pkt-len:`` Optional, under the premise of enabling jumbo, maximum packet length in decimal (64-9600).
> +* ``--max-pkt-len:`` Optional, maximum packet length in decimal (64-9600).
>   
>   * ``--no-numa:`` Optional, disables numa awareness.
>   
> diff --git a/doc/guides/sample_app_ug/l3_forward_power_man.rst b/doc/guides/sample_app_ug/l3_forward_power_man.rst
> index 0495314c87d5..8817eaadbfc3 100644
> --- a/doc/guides/sample_app_ug/l3_forward_power_man.rst
> +++ b/doc/guides/sample_app_ug/l3_forward_power_man.rst
> @@ -88,7 +88,7 @@ The application has a number of command line options:
>   
>   .. code-block:: console
>   
> -    ./<build_dir>/examples/dpdk-l3fwd_power [EAL options] -- -p PORTMASK [-P]  --config(port,queue,lcore)[,(port,queue,lcore)] [--enable-jumbo [--max-pkt-len PKTLEN]] [--no-numa]
> +    ./<build_dir>/examples/dpdk-l3fwd_power [EAL options] -- -p PORTMASK [-P]  --config(port,queue,lcore)[,(port,queue,lcore)] [--max-pkt-len PKTLEN] [--no-numa]
>   
>   where,
>   
> @@ -99,8 +99,6 @@ where,
>   
>   *   --config (port,queue,lcore)[,(port,queue,lcore)]: determines which queues from which ports are mapped to which cores.
>   
> -*   --enable-jumbo: optional, enables jumbo frames
> -
>   *   --max-pkt-len: optional, maximum packet length in decimal (64-9600)
>   
>   *   --no-numa: optional, disables numa awareness
> diff --git a/doc/guides/sample_app_ug/performance_thread.rst b/doc/guides/sample_app_ug/performance_thread.rst
> index 9b09838f6448..7d1bf6eaae8c 100644
> --- a/doc/guides/sample_app_ug/performance_thread.rst
> +++ b/doc/guides/sample_app_ug/performance_thread.rst
> @@ -59,7 +59,7 @@ The application has a number of command line options::
>           -p PORTMASK [-P]
>           --rx(port,queue,lcore,thread)[,(port,queue,lcore,thread)]
>           --tx(lcore,thread)[,(lcore,thread)]
> -        [--enable-jumbo] [--max-pkt-len PKTLEN]]  [--no-numa]
> +        [--max-pkt-len PKTLEN]  [--no-numa]
>           [--hash-entry-num] [--ipv6] [--no-lthreads] [--stat-lcore lcore]
>           [--parse-ptype]
>   
> @@ -80,8 +80,6 @@ Where:
>     the lcore the thread runs on, and the id of RX thread with which it is
>     associated. The parameters are explained below.
>   
> -* ``--enable-jumbo``: optional, enables jumbo frames.
> -
>   * ``--max-pkt-len``: optional, maximum packet length in decimal (64-9600).
>   
>   * ``--no-numa``: optional, disables numa awareness.
> diff --git a/doc/guides/sample_app_ug/skeleton.rst b/doc/guides/sample_app_ug/skeleton.rst
> index f7bcd7ed2a1d..6d0de6440105 100644
> --- a/doc/guides/sample_app_ug/skeleton.rst
> +++ b/doc/guides/sample_app_ug/skeleton.rst
> @@ -106,12 +106,7 @@ Forwarding application is shown below:
>       :end-before: >8 End of main functional part of port initialization.
>   
>   The Ethernet ports are configured with default settings using the
> -``rte_eth_dev_configure()`` function and the ``port_conf_default`` struct:
> -
> -.. literalinclude:: ../../../examples/skeleton/basicfwd.c
> -        :language: c
> -        :start-after: Configuration of ethernet ports. 8<
> -        :end-before: >8 End of configuration of ethernet ports.
> +``rte_eth_dev_configure()`` function.
>   
>   For this example the ports are set up with 1 RX and 1 TX queue using the
>   ``rte_eth_rx_queue_setup()`` and ``rte_eth_tx_queue_setup()`` functions.
> diff --git a/drivers/net/atlantic/atl_ethdev.c b/drivers/net/atlantic/atl_ethdev.c
> index 0ce35eb519e2..3f654c071566 100644
> --- a/drivers/net/atlantic/atl_ethdev.c
> +++ b/drivers/net/atlantic/atl_ethdev.c
> @@ -1636,9 +1636,6 @@ atl_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	if (mtu < RTE_ETHER_MIN_MTU || frame_size > dev_info.max_rx_pktlen)
>   		return -EINVAL;
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
>   	return 0;
>   }
>   
> diff --git a/drivers/net/avp/avp_ethdev.c b/drivers/net/avp/avp_ethdev.c
> index 623fa5e5ff5b..0feacc822433 100644
> --- a/drivers/net/avp/avp_ethdev.c
> +++ b/drivers/net/avp/avp_ethdev.c
> @@ -1059,17 +1059,18 @@ static int
>   avp_dev_enable_scattered(struct rte_eth_dev *eth_dev,
>   			 struct avp_dev *avp)
>   {
> -	unsigned int max_rx_pkt_len;
> +	unsigned int max_rx_pktlen;
>   
> -	max_rx_pkt_len = eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	max_rx_pktlen = eth_dev->data->mtu + RTE_ETHER_HDR_LEN +
> +		RTE_ETHER_CRC_LEN;
>   
> -	if ((max_rx_pkt_len > avp->guest_mbuf_size) ||
> -	    (max_rx_pkt_len > avp->host_mbuf_size)) {
> +	if (max_rx_pktlen > avp->guest_mbuf_size ||
> +	    max_rx_pktlen > avp->host_mbuf_size) {
>   		/*
>   		 * If the guest MTU is greater than either the host or guest
>   		 * buffers then chained mbufs have to be enabled in the TX
>   		 * direction.  It is assumed that the application will not need
> -		 * to send packets larger than their max_rx_pkt_len (MRU).
> +		 * to send packets larger than their MTU.
>   		 */
>   		return 1;
>   	}
> @@ -1124,7 +1125,7 @@ avp_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
>   
>   	PMD_DRV_LOG(DEBUG, "AVP max_rx_pkt_len=(%u,%u) mbuf_size=(%u,%u)\n",
>   		    avp->max_rx_pkt_len,
> -		    eth_dev->data->dev_conf.rxmode.max_rx_pkt_len,
> +		    eth_dev->data->mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN,
>   		    avp->host_mbuf_size,
>   		    avp->guest_mbuf_size);
>   
> @@ -1889,8 +1890,8 @@ avp_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
>   			 * function; send it truncated to avoid the performance
>   			 * hit of having to manage returning the already
>   			 * allocated buffer to the free list.  This should not
> -			 * happen since the application should have set the
> -			 * max_rx_pkt_len based on its MTU and it should be
> +			 * happen since the application should have not send
> +			 * packages larger than its MTU and it should be
>   			 * policing its own packet sizes.
>   			 */
>   			txq->errors++;
> diff --git a/drivers/net/axgbe/axgbe_ethdev.c b/drivers/net/axgbe/axgbe_ethdev.c
> index 9cb4818af11f..76aeec077f2b 100644
> --- a/drivers/net/axgbe/axgbe_ethdev.c
> +++ b/drivers/net/axgbe/axgbe_ethdev.c
> @@ -350,7 +350,7 @@ axgbe_dev_start(struct rte_eth_dev *dev)
>   	struct axgbe_port *pdata = dev->data->dev_private;
>   	int ret;
>   	struct rte_eth_dev_data *dev_data = dev->data;
> -	uint16_t max_pkt_len = dev_data->dev_conf.rxmode.max_rx_pkt_len;
> +	uint16_t max_pkt_len;
>   
>   	dev->dev_ops = &axgbe_eth_dev_ops;
>   
> @@ -383,6 +383,8 @@ axgbe_dev_start(struct rte_eth_dev *dev)
>   
>   	rte_bit_relaxed_clear32(AXGBE_STOPPED, &pdata->dev_state);
>   	rte_bit_relaxed_clear32(AXGBE_DOWN, &pdata->dev_state);
> +
> +	max_pkt_len = dev_data->mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
>   	if ((dev_data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_SCATTER) ||
>   				max_pkt_len > pdata->rx_buf_size)
>   		dev_data->scattered_rx = 1;
> @@ -1490,7 +1492,7 @@ static int axgb_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   				dev->data->port_id);
>   		return -EBUSY;
>   	}
> -	if (frame_size > AXGBE_ETH_MAX_LEN) {
> +	if (mtu > RTE_ETHER_MTU) {
>   		dev->data->dev_conf.rxmode.offloads |=
>   			DEV_RX_OFFLOAD_JUMBO_FRAME;
>   		val = 1;
> @@ -1500,7 +1502,6 @@ static int axgb_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   		val = 0;
>   	}
>   	AXGMAC_IOWRITE_BITS(pdata, MAC_RCR, JE, val);
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
>   	return 0;
>   }
>   
> diff --git a/drivers/net/bnx2x/bnx2x_ethdev.c b/drivers/net/bnx2x/bnx2x_ethdev.c
> index 463886f17a58..009a94e9a8fa 100644
> --- a/drivers/net/bnx2x/bnx2x_ethdev.c
> +++ b/drivers/net/bnx2x/bnx2x_ethdev.c
> @@ -175,16 +175,12 @@ static int
>   bnx2x_dev_configure(struct rte_eth_dev *dev)
>   {
>   	struct bnx2x_softc *sc = dev->data->dev_private;
> -	struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
>   
>   	int mp_ncpus = sysconf(_SC_NPROCESSORS_CONF);
>   
>   	PMD_INIT_FUNC_TRACE(sc);
>   
> -	if (rxmode->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		sc->mtu = dev->data->dev_conf.rxmode.max_rx_pkt_len;
> -		dev->data->mtu = sc->mtu;
> -	}
> +	sc->mtu = dev->data->dev_conf.rxmode.mtu;
>   
>   	if (dev->data->nb_tx_queues > dev->data->nb_rx_queues) {
>   		PMD_DRV_LOG(ERR, sc, "The number of TX queues is greater than number of RX queues");
> diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
> index aa7e7fdc85fa..8c6f20b75aed 100644
> --- a/drivers/net/bnxt/bnxt_ethdev.c
> +++ b/drivers/net/bnxt/bnxt_ethdev.c
> @@ -1157,13 +1157,8 @@ static int bnxt_dev_configure_op(struct rte_eth_dev *eth_dev)
>   		rx_offloads |= DEV_RX_OFFLOAD_RSS_HASH;
>   	eth_dev->data->dev_conf.rxmode.offloads = rx_offloads;
>   
> -	if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		eth_dev->data->mtu =
> -			eth_dev->data->dev_conf.rxmode.max_rx_pkt_len -
> -			RTE_ETHER_HDR_LEN - RTE_ETHER_CRC_LEN - VLAN_TAG_SIZE *
> -			BNXT_NUM_VLANS;
> -		bnxt_mtu_set_op(eth_dev, eth_dev->data->mtu);
> -	}
> +	bnxt_mtu_set_op(eth_dev, eth_dev->data->mtu);
> +
>   	return 0;
>   
>   resource_error:
> @@ -1201,6 +1196,7 @@ void bnxt_print_link_info(struct rte_eth_dev *eth_dev)
>    */
>   static int bnxt_scattered_rx(struct rte_eth_dev *eth_dev)
>   {
> +	uint32_t overhead = BNXT_MAX_PKT_LEN - BNXT_MAX_MTU;
>   	uint16_t buf_size;
>   	int i;
>   
> @@ -1215,7 +1211,7 @@ static int bnxt_scattered_rx(struct rte_eth_dev *eth_dev)
>   
>   		buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) -
>   				      RTE_PKTMBUF_HEADROOM);
> -		if (eth_dev->data->dev_conf.rxmode.max_rx_pkt_len > buf_size)
> +		if (eth_dev->data->mtu + overhead > buf_size)
>   			return 1;
>   	}
>   	return 0;
> @@ -3026,6 +3022,7 @@ bnxt_tx_burst_mode_get(struct rte_eth_dev *dev, __rte_unused uint16_t queue_id,
>   
>   int bnxt_mtu_set_op(struct rte_eth_dev *eth_dev, uint16_t new_mtu)
>   {
> +	uint32_t overhead = BNXT_MAX_PKT_LEN - BNXT_MAX_MTU;
>   	struct bnxt *bp = eth_dev->data->dev_private;
>   	uint32_t new_pkt_size;
>   	uint32_t rc = 0;
> @@ -3039,8 +3036,7 @@ int bnxt_mtu_set_op(struct rte_eth_dev *eth_dev, uint16_t new_mtu)
>   	if (!eth_dev->data->nb_rx_queues)
>   		return rc;
>   
> -	new_pkt_size = new_mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN +
> -		       VLAN_TAG_SIZE * BNXT_NUM_VLANS;
> +	new_pkt_size = new_mtu + overhead;
>   
>   	/*
>   	 * Disallow any MTU change that would require scattered receive support
> @@ -3067,7 +3063,7 @@ int bnxt_mtu_set_op(struct rte_eth_dev *eth_dev, uint16_t new_mtu)
>   	}
>   
>   	/* Is there a change in mtu setting? */
> -	if (eth_dev->data->dev_conf.rxmode.max_rx_pkt_len == new_pkt_size)
> +	if (eth_dev->data->mtu == new_mtu)
>   		return rc;
>   
>   	for (i = 0; i < bp->nr_vnics; i++) {
> @@ -3089,9 +3085,6 @@ int bnxt_mtu_set_op(struct rte_eth_dev *eth_dev, uint16_t new_mtu)
>   		}
>   	}
>   
> -	if (!rc)
> -		eth_dev->data->dev_conf.rxmode.max_rx_pkt_len = new_pkt_size;
> -
>   	if (bnxt_hwrm_config_host_mtu(bp))
>   		PMD_DRV_LOG(WARNING, "Failed to configure host MTU\n");
>   
> diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
> index 54987d96b34d..412acff42f65 100644
> --- a/drivers/net/bonding/rte_eth_bond_pmd.c
> +++ b/drivers/net/bonding/rte_eth_bond_pmd.c
> @@ -1724,8 +1724,8 @@ slave_configure(struct rte_eth_dev *bonded_eth_dev,
>   		slave_eth_dev->data->dev_conf.rxmode.offloads &=
>   				~DEV_RX_OFFLOAD_VLAN_FILTER;
>   
> -	slave_eth_dev->data->dev_conf.rxmode.max_rx_pkt_len =
> -			bonded_eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	slave_eth_dev->data->dev_conf.rxmode.mtu =
> +			bonded_eth_dev->data->dev_conf.rxmode.mtu;
>   
>   	if (bonded_eth_dev->data->dev_conf.rxmode.offloads &
>   			DEV_RX_OFFLOAD_JUMBO_FRAME)
> diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c
> index 8629193d5049..8d0677cd89d9 100644
> --- a/drivers/net/cnxk/cnxk_ethdev.c
> +++ b/drivers/net/cnxk/cnxk_ethdev.c
> @@ -53,7 +53,7 @@ nix_enable_mseg_on_jumbo(struct cnxk_eth_rxq_sp *rxq)
>   	mbp_priv = rte_mempool_get_priv(rxq->qconf.mp);
>   	buffsz = mbp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM;
>   
> -	if (eth_dev->data->dev_conf.rxmode.max_rx_pkt_len > buffsz) {
> +	if (eth_dev->data->mtu + (uint32_t)CNXK_NIX_L2_OVERHEAD > buffsz) {
>   		dev->rx_offloads |= DEV_RX_OFFLOAD_SCATTER;
>   		dev->tx_offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
>   	}
> @@ -64,18 +64,13 @@ nix_recalc_mtu(struct rte_eth_dev *eth_dev)
>   {
>   	struct rte_eth_dev_data *data = eth_dev->data;
>   	struct cnxk_eth_rxq_sp *rxq;
> -	uint16_t mtu;
>   	int rc;
>   
>   	rxq = ((struct cnxk_eth_rxq_sp *)data->rx_queues[0]) - 1;
>   	/* Setup scatter mode if needed by jumbo */
>   	nix_enable_mseg_on_jumbo(rxq);
>   
> -	/* Setup MTU based on max_rx_pkt_len */
> -	mtu = data->dev_conf.rxmode.max_rx_pkt_len - CNXK_NIX_L2_OVERHEAD +
> -				CNXK_NIX_MAX_VTAG_ACT_SIZE;
> -
> -	rc = cnxk_nix_mtu_set(eth_dev, mtu);
> +	rc = cnxk_nix_mtu_set(eth_dev, data->mtu);
>   	if (rc)
>   		plt_err("Failed to set default MTU size, rc=%d", rc);
>   
> diff --git a/drivers/net/cnxk/cnxk_ethdev_ops.c b/drivers/net/cnxk/cnxk_ethdev_ops.c
> index b6cc5286c6d0..695d0d6fd3e2 100644
> --- a/drivers/net/cnxk/cnxk_ethdev_ops.c
> +++ b/drivers/net/cnxk/cnxk_ethdev_ops.c
> @@ -440,16 +440,10 @@ cnxk_nix_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
>   		goto exit;
>   	}
>   
> -	frame_size += RTE_ETHER_CRC_LEN;
> -
> -	if (frame_size > RTE_ETHER_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		dev->rx_offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		dev->rx_offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
> -
> -	/* Update max_rx_pkt_len */
> -	data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
>   exit:
>   	return rc;
>   }
> diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c
> index 177eca397600..8cf61f12a8d6 100644
> --- a/drivers/net/cxgbe/cxgbe_ethdev.c
> +++ b/drivers/net/cxgbe/cxgbe_ethdev.c
> @@ -310,11 +310,11 @@ int cxgbe_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
>   		return err;
>   
>   	/* Must accommodate at least RTE_ETHER_MIN_MTU */
> -	if (new_mtu < RTE_ETHER_MIN_MTU || new_mtu > dev_info.max_rx_pktlen)
> +	if (mtu < RTE_ETHER_MIN_MTU || new_mtu > dev_info.max_rx_pktlen)
>   		return -EINVAL;
>   
>   	/* set to jumbo mode if needed */
> -	if (new_mtu > CXGBE_ETH_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		eth_dev->data->dev_conf.rxmode.offloads |=
>   			DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
> @@ -323,9 +323,6 @@ int cxgbe_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
>   
>   	err = t4_set_rxmode(adapter, adapter->mbox, pi->viid, new_mtu, -1, -1,
>   			    -1, -1, true);
> -	if (!err)
> -		eth_dev->data->dev_conf.rxmode.max_rx_pkt_len = new_mtu;
> -
>   	return err;
>   }
>   
> @@ -623,7 +620,8 @@ int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
>   			     const struct rte_eth_rxconf *rx_conf __rte_unused,
>   			     struct rte_mempool *mp)
>   {
> -	unsigned int pkt_len = eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	unsigned int pkt_len = eth_dev->data->mtu + RTE_ETHER_HDR_LEN +
> +		RTE_ETHER_CRC_LEN;
>   	struct port_info *pi = eth_dev->data->dev_private;
>   	struct adapter *adapter = pi->adapter;
>   	struct rte_eth_dev_info dev_info;
> @@ -683,7 +681,7 @@ int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
>   		rxq->fl.size = temp_nb_desc;
>   
>   	/* Set to jumbo mode if necessary */
> -	if (pkt_len > CXGBE_ETH_MAX_LEN)
> +	if (eth_dev->data->mtu > RTE_ETHER_MTU)
>   		eth_dev->data->dev_conf.rxmode.offloads |=
>   			DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
> diff --git a/drivers/net/cxgbe/cxgbe_main.c b/drivers/net/cxgbe/cxgbe_main.c
> index 6dd1bf1f836e..91d6bb9bbcb0 100644
> --- a/drivers/net/cxgbe/cxgbe_main.c
> +++ b/drivers/net/cxgbe/cxgbe_main.c
> @@ -1661,8 +1661,7 @@ int cxgbe_link_start(struct port_info *pi)
>   	unsigned int mtu;
>   	int ret;
>   
> -	mtu = pi->eth_dev->data->dev_conf.rxmode.max_rx_pkt_len -
> -	      (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN);
> +	mtu = pi->eth_dev->data->mtu;
>   
>   	conf_offloads = pi->eth_dev->data->dev_conf.rxmode.offloads;
>   
> diff --git a/drivers/net/cxgbe/sge.c b/drivers/net/cxgbe/sge.c
> index e5f7721dc4b3..830f5192474d 100644
> --- a/drivers/net/cxgbe/sge.c
> +++ b/drivers/net/cxgbe/sge.c
> @@ -1113,7 +1113,7 @@ int t4_eth_xmit(struct sge_eth_txq *txq, struct rte_mbuf *mbuf,
>   	u32 wr_mid;
>   	u64 cntrl, *end;
>   	bool v6;
> -	u32 max_pkt_len = txq->data->dev_conf.rxmode.max_rx_pkt_len;
> +	u32 max_pkt_len;
>   
>   	/* Reject xmit if queue is stopped */
>   	if (unlikely(txq->flags & EQ_STOPPED))
> @@ -1129,6 +1129,7 @@ int t4_eth_xmit(struct sge_eth_txq *txq, struct rte_mbuf *mbuf,
>   		return 0;
>   	}
>   
> +	max_pkt_len = txq->data->mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
>   	if ((!(m->ol_flags & PKT_TX_TCP_SEG)) &&
>   	    (unlikely(m->pkt_len > max_pkt_len)))
>   		goto out_free;
> diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
> index 36d8f9249df1..adbdb87baab9 100644
> --- a/drivers/net/dpaa/dpaa_ethdev.c
> +++ b/drivers/net/dpaa/dpaa_ethdev.c
> @@ -187,15 +187,13 @@ dpaa_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   		return -EINVAL;
>   	}
>   
> -	if (frame_size > DPAA_ETH_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		dev->data->dev_conf.rxmode.offloads |=
>   						DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		dev->data->dev_conf.rxmode.offloads &=
>   						~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
>   	fman_if_set_maxfrm(dev->process_private, frame_size);
>   
>   	return 0;
> @@ -213,6 +211,7 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev)
>   	struct fman_if *fif = dev->process_private;
>   	struct __fman_if *__fif;
>   	struct rte_intr_handle *intr_handle;
> +	uint32_t max_rx_pktlen;
>   	int speed, duplex;
>   	int ret;
>   
> @@ -238,27 +237,17 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev)
>   		tx_offloads, dev_tx_offloads_nodis);
>   	}
>   
> -	if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		uint32_t max_len;
> -
> -		DPAA_PMD_DEBUG("enabling jumbo");
> -
> -		if (dev->data->dev_conf.rxmode.max_rx_pkt_len <=
> -		    DPAA_MAX_RX_PKT_LEN)
> -			max_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
> -		else {
> -			DPAA_PMD_INFO("enabling jumbo override conf max len=%d "
> -				"supported is %d",
> -				dev->data->dev_conf.rxmode.max_rx_pkt_len,
> -				DPAA_MAX_RX_PKT_LEN);
> -			max_len = DPAA_MAX_RX_PKT_LEN;
> -		}
> -
> -		fman_if_set_maxfrm(dev->process_private, max_len);
> -		dev->data->mtu = max_len
> -			- RTE_ETHER_HDR_LEN - RTE_ETHER_CRC_LEN - VLAN_TAG_SIZE;
> +	max_rx_pktlen = eth_conf->rxmode.mtu + RTE_ETHER_HDR_LEN +
> +			RTE_ETHER_CRC_LEN + VLAN_TAG_SIZE;
> +	if (max_rx_pktlen > DPAA_MAX_RX_PKT_LEN) {
> +		DPAA_PMD_INFO("enabling jumbo override conf max len=%d "
> +			"supported is %d",
> +			max_rx_pktlen, DPAA_MAX_RX_PKT_LEN);
> +		max_rx_pktlen = DPAA_MAX_RX_PKT_LEN;
>   	}
>   
> +	fman_if_set_maxfrm(dev->process_private, max_rx_pktlen);
> +
>   	if (rx_offloads & DEV_RX_OFFLOAD_SCATTER) {
>   		DPAA_PMD_DEBUG("enabling scatter mode");
>   		fman_if_set_sg(dev->process_private, 1);
> @@ -936,6 +925,7 @@ int dpaa_eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
>   	u32 flags = 0;
>   	int ret;
>   	u32 buffsz = rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM;
> +	uint32_t max_rx_pktlen;
>   
>   	PMD_INIT_FUNC_TRACE();
>   
> @@ -977,17 +967,17 @@ int dpaa_eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
>   		return -EINVAL;
>   	}
>   
> +	max_rx_pktlen = dev->data->mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN +
> +		VLAN_TAG_SIZE;
>   	/* Max packet can fit in single buffer */
> -	if (dev->data->dev_conf.rxmode.max_rx_pkt_len <= buffsz) {
> +	if (max_rx_pktlen <= buffsz) {
>   		;
>   	} else if (dev->data->dev_conf.rxmode.offloads &
>   			DEV_RX_OFFLOAD_SCATTER) {
> -		if (dev->data->dev_conf.rxmode.max_rx_pkt_len >
> -			buffsz * DPAA_SGT_MAX_ENTRIES) {
> -			DPAA_PMD_ERR("max RxPkt size %d too big to fit "
> +		if (max_rx_pktlen > buffsz * DPAA_SGT_MAX_ENTRIES) {
> +			DPAA_PMD_ERR("Maximum Rx packet size %d too big to fit "
>   				"MaxSGlist %d",
> -				dev->data->dev_conf.rxmode.max_rx_pkt_len,
> -				buffsz * DPAA_SGT_MAX_ENTRIES);
> +				max_rx_pktlen, buffsz * DPAA_SGT_MAX_ENTRIES);
>   			rte_errno = EOVERFLOW;
>   			return -rte_errno;
>   		}
> @@ -995,8 +985,7 @@ int dpaa_eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
>   		DPAA_PMD_WARN("The requested maximum Rx packet size (%u) is"
>   		     " larger than a single mbuf (%u) and scattered"
>   		     " mode has not been requested",
> -		     dev->data->dev_conf.rxmode.max_rx_pkt_len,
> -		     buffsz - RTE_PKTMBUF_HEADROOM);
> +		     max_rx_pktlen, buffsz - RTE_PKTMBUF_HEADROOM);
>   	}
>   
>   	dpaa_intf->bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
> @@ -1034,8 +1023,7 @@ int dpaa_eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
>   
>   	dpaa_intf->valid = 1;
>   	DPAA_PMD_DEBUG("if:%s sg_on = %d, max_frm =%d", dpaa_intf->name,
> -		fman_if_get_sg_enable(fif),
> -		dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +		fman_if_get_sg_enable(fif), max_rx_pktlen);
>   	/* checking if push mode only, no error check for now */
>   	if (!rxq->is_static &&
>   	    dpaa_push_mode_max_queue > dpaa_push_queue_idx) {
> diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
> index 275656fbe47c..97dd8e079a73 100644
> --- a/drivers/net/dpaa2/dpaa2_ethdev.c
> +++ b/drivers/net/dpaa2/dpaa2_ethdev.c
> @@ -540,6 +540,7 @@ dpaa2_eth_dev_configure(struct rte_eth_dev *dev)
>   	int tx_l3_csum_offload = false;
>   	int tx_l4_csum_offload = false;
>   	int ret, tc_index;
> +	uint32_t max_rx_pktlen;
>   
>   	PMD_INIT_FUNC_TRACE();
>   
> @@ -559,25 +560,19 @@ dpaa2_eth_dev_configure(struct rte_eth_dev *dev)
>   		tx_offloads, dev_tx_offloads_nodis);
>   	}
>   
> -	if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		if (eth_conf->rxmode.max_rx_pkt_len <= DPAA2_MAX_RX_PKT_LEN) {
> -			ret = dpni_set_max_frame_length(dpni, CMD_PRI_LOW,
> -				priv->token, eth_conf->rxmode.max_rx_pkt_len
> -				- RTE_ETHER_CRC_LEN);
> -			if (ret) {
> -				DPAA2_PMD_ERR(
> -					"Unable to set mtu. check config");
> -				return ret;
> -			}
> -			dev->data->mtu =
> -				dev->data->dev_conf.rxmode.max_rx_pkt_len -
> -				RTE_ETHER_HDR_LEN - RTE_ETHER_CRC_LEN -
> -				VLAN_TAG_SIZE;
> -				DPAA2_PMD_INFO("MTU configured for the device: %d",
> -						dev->data->mtu);
> -		} else {
> -			return -1;
> +	max_rx_pktlen = eth_conf->rxmode.mtu + RTE_ETHER_HDR_LEN +
> +				RTE_ETHER_CRC_LEN + VLAN_TAG_SIZE;
> +	if (max_rx_pktlen <= DPAA2_MAX_RX_PKT_LEN) {
> +		ret = dpni_set_max_frame_length(dpni, CMD_PRI_LOW,
> +			priv->token, max_rx_pktlen - RTE_ETHER_CRC_LEN);
> +		if (ret != 0) {
> +			DPAA2_PMD_ERR("Unable to set mtu. check config");
> +			return ret;
> +		DPAA2_PMD_INFO("MTU configured for the device: %d",
> +				dev->data->mtu);
>   		}
> +	} else {
> +		return -1;
>   	}
>   
>   	if (eth_conf->rxmode.mq_mode == ETH_MQ_RX_RSS) {
> @@ -1477,15 +1472,13 @@ dpaa2_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	if (mtu < RTE_ETHER_MIN_MTU || frame_size > DPAA2_MAX_RX_PKT_LEN)
>   		return -EINVAL;
>   
> -	if (frame_size > DPAA2_ETH_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		dev->data->dev_conf.rxmode.offloads |=
>   						DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		dev->data->dev_conf.rxmode.offloads &=
>   						~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
>   	/* Set the Max Rx frame length as 'mtu' +
>   	 * Maximum Ethernet header length
>   	 */
> diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c
> index a0ca371b0275..6f418a36aa04 100644
> --- a/drivers/net/e1000/em_ethdev.c
> +++ b/drivers/net/e1000/em_ethdev.c
> @@ -1818,7 +1818,7 @@ eth_em_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	rctl = E1000_READ_REG(hw, E1000_RCTL);
>   
>   	/* switch to jumbo mode if needed */
> -	if (frame_size > E1000_ETH_MAX_LEN) {
> +	if (mtu > RTE_ETHER_MTU) {
>   		dev->data->dev_conf.rxmode.offloads |=
>   			DEV_RX_OFFLOAD_JUMBO_FRAME;
>   		rctl |= E1000_RCTL_LPE;
> @@ -1829,8 +1829,6 @@ eth_em_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	}
>   	E1000_WRITE_REG(hw, E1000_RCTL, rctl);
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
>   	return 0;
>   }
>   
> diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
> index d80fad01e36d..4c114bf90fc7 100644
> --- a/drivers/net/e1000/igb_ethdev.c
> +++ b/drivers/net/e1000/igb_ethdev.c
> @@ -2681,9 +2681,7 @@ igb_vlan_hw_extend_disable(struct rte_eth_dev *dev)
>   	E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg);
>   
>   	/* Update maximum packet length */
> -	if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
> -		E1000_WRITE_REG(hw, E1000_RLPML,
> -				dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +	E1000_WRITE_REG(hw, E1000_RLPML, dev->data->mtu + E1000_ETH_OVERHEAD);
>   }
>   
>   static void
> @@ -2699,10 +2697,8 @@ igb_vlan_hw_extend_enable(struct rte_eth_dev *dev)
>   	E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg);
>   
>   	/* Update maximum packet length */
> -	if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
> -		E1000_WRITE_REG(hw, E1000_RLPML,
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len +
> -						VLAN_TAG_SIZE);
> +	E1000_WRITE_REG(hw, E1000_RLPML,
> +		dev->data->mtu + E1000_ETH_OVERHEAD + VLAN_TAG_SIZE);
>   }
>   
>   static int
> @@ -4400,7 +4396,7 @@ eth_igb_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	rctl = E1000_READ_REG(hw, E1000_RCTL);
>   
>   	/* switch to jumbo mode if needed */
> -	if (frame_size > E1000_ETH_MAX_LEN) {
> +	if (mtu > RTE_ETHER_MTU) {
>   		dev->data->dev_conf.rxmode.offloads |=
>   			DEV_RX_OFFLOAD_JUMBO_FRAME;
>   		rctl |= E1000_RCTL_LPE;
> @@ -4411,11 +4407,7 @@ eth_igb_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	}
>   	E1000_WRITE_REG(hw, E1000_RCTL, rctl);
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
> -	E1000_WRITE_REG(hw, E1000_RLPML,
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +	E1000_WRITE_REG(hw, E1000_RLPML, frame_size);
>   
>   	return 0;
>   }
> diff --git a/drivers/net/e1000/igb_rxtx.c b/drivers/net/e1000/igb_rxtx.c
> index 278d5d2712af..e9a30d393bd7 100644
> --- a/drivers/net/e1000/igb_rxtx.c
> +++ b/drivers/net/e1000/igb_rxtx.c
> @@ -2324,6 +2324,7 @@ eth_igb_rx_init(struct rte_eth_dev *dev)
>   	uint32_t srrctl;
>   	uint16_t buf_size;
>   	uint16_t rctl_bsize;
> +	uint32_t max_len;
>   	uint16_t i;
>   	int ret;
>   
> @@ -2342,9 +2343,8 @@ eth_igb_rx_init(struct rte_eth_dev *dev)
>   	/*
>   	 * Configure support of jumbo frames, if any.
>   	 */
> +	max_len = dev->data->mtu + E1000_ETH_OVERHEAD;
>   	if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		uint32_t max_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
> -
>   		rctl |= E1000_RCTL_LPE;
>   
>   		/*
> @@ -2422,8 +2422,7 @@ eth_igb_rx_init(struct rte_eth_dev *dev)
>   					       E1000_SRRCTL_BSIZEPKT_SHIFT);
>   
>   			/* It adds dual VLAN length for supporting dual VLAN */
> -			if ((dev->data->dev_conf.rxmode.max_rx_pkt_len +
> -						2 * VLAN_TAG_SIZE) > buf_size){
> +			if ((max_len + 2 * VLAN_TAG_SIZE) > buf_size) {
>   				if (!dev->data->scattered_rx)
>   					PMD_INIT_LOG(DEBUG,
>   						     "forcing scatter mode");
> @@ -2647,15 +2646,15 @@ eth_igbvf_rx_init(struct rte_eth_dev *dev)
>   	uint32_t srrctl;
>   	uint16_t buf_size;
>   	uint16_t rctl_bsize;
> +	uint32_t max_len;
>   	uint16_t i;
>   	int ret;
>   
>   	hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>   
>   	/* setup MTU */
> -	e1000_rlpml_set_vf(hw,
> -		(uint16_t)(dev->data->dev_conf.rxmode.max_rx_pkt_len +
> -		VLAN_TAG_SIZE));
> +	max_len = dev->data->mtu + E1000_ETH_OVERHEAD;
> +	e1000_rlpml_set_vf(hw, (uint16_t)(max_len + VLAN_TAG_SIZE));
>   
>   	/* Configure and enable each RX queue. */
>   	rctl_bsize = 0;
> @@ -2712,8 +2711,7 @@ eth_igbvf_rx_init(struct rte_eth_dev *dev)
>   					       E1000_SRRCTL_BSIZEPKT_SHIFT);
>   
>   			/* It adds dual VLAN length for supporting dual VLAN */
> -			if ((dev->data->dev_conf.rxmode.max_rx_pkt_len +
> -						2 * VLAN_TAG_SIZE) > buf_size){
> +			if ((max_len + 2 * VLAN_TAG_SIZE) > buf_size) {
>   				if (!dev->data->scattered_rx)
>   					PMD_INIT_LOG(DEBUG,
>   						     "forcing scatter mode");
> diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
> index 4cebf60a68a7..3a9d5031b262 100644
> --- a/drivers/net/ena/ena_ethdev.c
> +++ b/drivers/net/ena/ena_ethdev.c
> @@ -679,26 +679,14 @@ static int ena_queue_start_all(struct rte_eth_dev *dev,
>   	return rc;
>   }
>   
> -static uint32_t ena_get_mtu_conf(struct ena_adapter *adapter)
> -{
> -	uint32_t max_frame_len = adapter->max_mtu;
> -
> -	if (adapter->edev_data->dev_conf.rxmode.offloads &
> -	    DEV_RX_OFFLOAD_JUMBO_FRAME)
> -		max_frame_len =
> -			adapter->edev_data->dev_conf.rxmode.max_rx_pkt_len;
> -
> -	return max_frame_len;
> -}
> -
>   static int ena_check_valid_conf(struct ena_adapter *adapter)
>   {
> -	uint32_t max_frame_len = ena_get_mtu_conf(adapter);
> +	uint32_t mtu = adapter->edev_data->mtu;
>   
> -	if (max_frame_len > adapter->max_mtu || max_frame_len < ENA_MIN_MTU) {
> +	if (mtu > adapter->max_mtu || mtu < ENA_MIN_MTU) {
>   		PMD_INIT_LOG(ERR,
>   			"Unsupported MTU of %d. Max MTU: %d, min MTU: %d\n",
> -			max_frame_len, adapter->max_mtu, ENA_MIN_MTU);
> +			mtu, adapter->max_mtu, ENA_MIN_MTU);
>   		return ENA_COM_UNSUPPORTED;
>   	}
>   
> @@ -871,10 +859,10 @@ static int ena_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	ena_dev = &adapter->ena_dev;
>   	ena_assert_msg(ena_dev != NULL, "Uninitialized device\n");
>   
> -	if (mtu > ena_get_mtu_conf(adapter) || mtu < ENA_MIN_MTU) {
> +	if (mtu > adapter->max_mtu || mtu < ENA_MIN_MTU) {
>   		PMD_DRV_LOG(ERR,
>   			"Invalid MTU setting. New MTU: %d, max MTU: %d, min MTU: %d\n",
> -			mtu, ena_get_mtu_conf(adapter), ENA_MIN_MTU);
> +			mtu, adapter->max_mtu, ENA_MIN_MTU);
>   		return -EINVAL;
>   	}
>   
> @@ -1945,7 +1933,10 @@ static int ena_infos_get(struct rte_eth_dev *dev,
>   	dev_info->hash_key_size = ENA_HASH_KEY_SIZE;
>   
>   	dev_info->min_rx_bufsize = ENA_MIN_FRAME_LEN;
> -	dev_info->max_rx_pktlen  = adapter->max_mtu;
> +	dev_info->max_rx_pktlen  = adapter->max_mtu + RTE_ETHER_HDR_LEN +
> +		RTE_ETHER_CRC_LEN;
> +	dev_info->min_mtu = ENA_MIN_MTU;
> +	dev_info->max_mtu = adapter->max_mtu;
>   	dev_info->max_mac_addrs = 1;
>   
>   	dev_info->max_rx_queues = adapter->max_num_io_queues;
> diff --git a/drivers/net/enetc/enetc_ethdev.c b/drivers/net/enetc/enetc_ethdev.c
> index b496cd470045..cdb9783b5372 100644
> --- a/drivers/net/enetc/enetc_ethdev.c
> +++ b/drivers/net/enetc/enetc_ethdev.c
> @@ -677,7 +677,7 @@ enetc_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   		return -EINVAL;
>   	}
>   
> -	if (frame_size > ENETC_ETH_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		dev->data->dev_conf.rxmode.offloads &=
>   						DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
> @@ -687,8 +687,6 @@ enetc_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	enetc_port_wr(enetc_hw, ENETC_PTCMSDUR(0), ENETC_MAC_MAXFRM_SIZE);
>   	enetc_port_wr(enetc_hw, ENETC_PTXMBAR, 2 * ENETC_MAC_MAXFRM_SIZE);
>   
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
>   	/*setting the MTU*/
>   	enetc_port_wr(enetc_hw, ENETC_PM0_MAXFRM, ENETC_SET_MAXFRM(frame_size) |
>   		      ENETC_SET_TX_MTU(ENETC_MAC_MAXFRM_SIZE));
> @@ -705,23 +703,15 @@ enetc_dev_configure(struct rte_eth_dev *dev)
>   	struct rte_eth_conf *eth_conf = &dev->data->dev_conf;
>   	uint64_t rx_offloads = eth_conf->rxmode.offloads;
>   	uint32_t checksum = L3_CKSUM | L4_CKSUM;
> +	uint32_t max_len;
>   
>   	PMD_INIT_FUNC_TRACE();
>   
> -	if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		uint32_t max_len;
> -
> -		max_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
> -
> -		enetc_port_wr(enetc_hw, ENETC_PM0_MAXFRM,
> -			      ENETC_SET_MAXFRM(max_len));
> -		enetc_port_wr(enetc_hw, ENETC_PTCMSDUR(0),
> -			      ENETC_MAC_MAXFRM_SIZE);
> -		enetc_port_wr(enetc_hw, ENETC_PTXMBAR,
> -			      2 * ENETC_MAC_MAXFRM_SIZE);
> -		dev->data->mtu = RTE_ETHER_MAX_LEN - RTE_ETHER_HDR_LEN -
> -			RTE_ETHER_CRC_LEN;
> -	}
> +	max_len = dev->data->dev_conf.rxmode.mtu + RTE_ETHER_HDR_LEN +
> +		RTE_ETHER_CRC_LEN;
> +	enetc_port_wr(enetc_hw, ENETC_PM0_MAXFRM, ENETC_SET_MAXFRM(max_len));
> +	enetc_port_wr(enetc_hw, ENETC_PTCMSDUR(0), ENETC_MAC_MAXFRM_SIZE);
> +	enetc_port_wr(enetc_hw, ENETC_PTXMBAR, 2 * ENETC_MAC_MAXFRM_SIZE);
>   
>   	if (rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC) {
>   		int config;
> diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
> index 8d5797523b8f..6a81ceb62ba7 100644
> --- a/drivers/net/enic/enic_ethdev.c
> +++ b/drivers/net/enic/enic_ethdev.c
> @@ -455,7 +455,7 @@ static int enicpmd_dev_info_get(struct rte_eth_dev *eth_dev,
>   	 * max mtu regardless of the current mtu (vNIC's mtu). vNIC mtu is
>   	 * a hint to the driver to size receive buffers accordingly so that
>   	 * larger-than-vnic-mtu packets get truncated.. For DPDK, we let
> -	 * the user decide the buffer size via rxmode.max_rx_pkt_len, basically
> +	 * the user decide the buffer size via rxmode.mtu, basically
>   	 * ignoring vNIC mtu.
>   	 */
>   	device_info->max_rx_pktlen = enic_mtu_to_max_rx_pktlen(enic->max_mtu);
> diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
> index 2affd380c6a4..dfc7f5d1f94f 100644
> --- a/drivers/net/enic/enic_main.c
> +++ b/drivers/net/enic/enic_main.c
> @@ -282,7 +282,7 @@ enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
>   	struct rq_enet_desc *rqd = rq->ring.descs;
>   	unsigned i;
>   	dma_addr_t dma_addr;
> -	uint32_t max_rx_pkt_len;
> +	uint32_t max_rx_pktlen;
>   	uint16_t rq_buf_len;
>   
>   	if (!rq->in_use)
> @@ -293,16 +293,16 @@ enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
>   
>   	/*
>   	 * If *not* using scatter and the mbuf size is greater than the
> -	 * requested max packet size (max_rx_pkt_len), then reduce the
> -	 * posted buffer size to max_rx_pkt_len. HW still receives packets
> -	 * larger than max_rx_pkt_len, but they will be truncated, which we
> +	 * requested max packet size (mtu + eth overhead), then reduce the
> +	 * posted buffer size to max packet size. HW still receives packets
> +	 * larger than max packet size, but they will be truncated, which we
>   	 * drop in the rx handler. Not ideal, but better than returning
>   	 * large packets when the user is not expecting them.
>   	 */
> -	max_rx_pkt_len = enic->rte_dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	max_rx_pktlen = enic_mtu_to_max_rx_pktlen(enic->rte_dev->data->mtu);
>   	rq_buf_len = rte_pktmbuf_data_room_size(rq->mp) - RTE_PKTMBUF_HEADROOM;
> -	if (max_rx_pkt_len < rq_buf_len && !rq->data_queue_enable)
> -		rq_buf_len = max_rx_pkt_len;
> +	if (max_rx_pktlen < rq_buf_len && !rq->data_queue_enable)
> +		rq_buf_len = max_rx_pktlen;
>   	for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
>   		mb = rte_mbuf_raw_alloc(rq->mp);
>   		if (mb == NULL) {
> @@ -818,7 +818,7 @@ int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
>   	unsigned int mbuf_size, mbufs_per_pkt;
>   	unsigned int nb_sop_desc, nb_data_desc;
>   	uint16_t min_sop, max_sop, min_data, max_data;
> -	uint32_t max_rx_pkt_len;
> +	uint32_t max_rx_pktlen;
>   
>   	/*
>   	 * Representor uses a reserved PF queue. Translate representor
> @@ -854,23 +854,23 @@ int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
>   
>   	mbuf_size = (uint16_t)(rte_pktmbuf_data_room_size(mp) -
>   			       RTE_PKTMBUF_HEADROOM);
> -	/* max_rx_pkt_len includes the ethernet header and CRC. */
> -	max_rx_pkt_len = enic->rte_dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	/* max_rx_pktlen includes the ethernet header and CRC. */
> +	max_rx_pktlen = enic_mtu_to_max_rx_pktlen(enic->rte_dev->data->mtu);
>   
>   	if (enic->rte_dev->data->dev_conf.rxmode.offloads &
>   	    DEV_RX_OFFLOAD_SCATTER) {
>   		dev_info(enic, "Rq %u Scatter rx mode enabled\n", queue_idx);
>   		/* ceil((max pkt len)/mbuf_size) */
> -		mbufs_per_pkt = (max_rx_pkt_len + mbuf_size - 1) / mbuf_size;
> +		mbufs_per_pkt = (max_rx_pktlen + mbuf_size - 1) / mbuf_size;
>   	} else {
>   		dev_info(enic, "Scatter rx mode disabled\n");
>   		mbufs_per_pkt = 1;
> -		if (max_rx_pkt_len > mbuf_size) {
> +		if (max_rx_pktlen > mbuf_size) {
>   			dev_warning(enic, "The maximum Rx packet size (%u) is"
>   				    " larger than the mbuf size (%u), and"
>   				    " scatter is disabled. Larger packets will"
>   				    " be truncated.\n",
> -				    max_rx_pkt_len, mbuf_size);
> +				    max_rx_pktlen, mbuf_size);
>   		}
>   	}
>   
> @@ -879,16 +879,15 @@ int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
>   		rq_sop->data_queue_enable = 1;
>   		rq_data->in_use = 1;
>   		/*
> -		 * HW does not directly support rxmode.max_rx_pkt_len. HW always
> +		 * HW does not directly support MTU. HW always
>   		 * receives packet sizes up to the "max" MTU.
>   		 * If not using scatter, we can achieve the effect of dropping
>   		 * larger packets by reducing the size of posted buffers.
>   		 * See enic_alloc_rx_queue_mbufs().
>   		 */
> -		if (max_rx_pkt_len <
> -		    enic_mtu_to_max_rx_pktlen(enic->max_mtu)) {
> -			dev_warning(enic, "rxmode.max_rx_pkt_len is ignored"
> -				    " when scatter rx mode is in use.\n");
> +		if (enic->rte_dev->data->mtu < enic->max_mtu) {
> +			dev_warning(enic,
> +				"mtu is ignored when scatter rx mode is in use.\n");
>   		}
>   	} else {
>   		dev_info(enic, "Rq %u Scatter rx mode not being used\n",
> @@ -931,7 +930,7 @@ int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
>   	if (mbufs_per_pkt > 1) {
>   		dev_info(enic, "For max packet size %u and mbuf size %u valid"
>   			 " rx descriptor range is %u to %u\n",
> -			 max_rx_pkt_len, mbuf_size, min_sop + min_data,
> +			 max_rx_pktlen, mbuf_size, min_sop + min_data,
>   			 max_sop + max_data);
>   	}
>   	dev_info(enic, "Using %d rx descriptors (sop %d, data %d)\n",
> @@ -1634,11 +1633,6 @@ int enic_set_mtu(struct enic *enic, uint16_t new_mtu)
>   			"MTU (%u) is greater than value configured in NIC (%u)\n",
>   			new_mtu, config_mtu);
>   
> -	/* Update the MTU and maximum packet length */
> -	eth_dev->data->mtu = new_mtu;
> -	eth_dev->data->dev_conf.rxmode.max_rx_pkt_len =
> -		enic_mtu_to_max_rx_pktlen(new_mtu);
> -
>   	/*
>   	 * If the device has not started (enic_enable), nothing to do.
>   	 * Later, enic_enable() will set up RQs reflecting the new maximum
> diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
> index 3236290e4021..5e4b361ca6c0 100644
> --- a/drivers/net/fm10k/fm10k_ethdev.c
> +++ b/drivers/net/fm10k/fm10k_ethdev.c
> @@ -757,7 +757,7 @@ fm10k_dev_rx_init(struct rte_eth_dev *dev)
>   				FM10K_SRRCTL_LOOPBACK_SUPPRESS);
>   
>   		/* It adds dual VLAN length for supporting dual VLAN */
> -		if ((dev->data->dev_conf.rxmode.max_rx_pkt_len +
> +		if ((dev->data->mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN +
>   				2 * FM10K_VLAN_TAG_SIZE) > buf_size ||
>   			rxq->offloads & DEV_RX_OFFLOAD_SCATTER) {
>   			uint32_t reg;
> diff --git a/drivers/net/hinic/hinic_pmd_ethdev.c b/drivers/net/hinic/hinic_pmd_ethdev.c
> index c01e2ec1d450..2d8271cb6095 100644
> --- a/drivers/net/hinic/hinic_pmd_ethdev.c
> +++ b/drivers/net/hinic/hinic_pmd_ethdev.c
> @@ -315,19 +315,19 @@ static int hinic_dev_configure(struct rte_eth_dev *dev)
>   		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
>   
>   	/* mtu size is 256~9600 */
> -	if (dev->data->dev_conf.rxmode.max_rx_pkt_len < HINIC_MIN_FRAME_SIZE ||
> -	    dev->data->dev_conf.rxmode.max_rx_pkt_len >
> -	    HINIC_MAX_JUMBO_FRAME_SIZE) {
> +	if (HINIC_MTU_TO_PKTLEN(dev->data->dev_conf.rxmode.mtu) <
> +			HINIC_MIN_FRAME_SIZE ||
> +	    HINIC_MTU_TO_PKTLEN(dev->data->dev_conf.rxmode.mtu) >
> +			HINIC_MAX_JUMBO_FRAME_SIZE) {
>   		PMD_DRV_LOG(ERR,
> -			"Max rx pkt len out of range, get max_rx_pkt_len:%d, "
> +			"Packet length out of range, get packet length:%d, "
>   			"expect between %d and %d",
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len,
> +			HINIC_MTU_TO_PKTLEN(dev->data->dev_conf.rxmode.mtu),
>   			HINIC_MIN_FRAME_SIZE, HINIC_MAX_JUMBO_FRAME_SIZE);
>   		return -EINVAL;
>   	}
>   
> -	nic_dev->mtu_size =
> -		HINIC_PKTLEN_TO_MTU(dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +	nic_dev->mtu_size = dev->data->dev_conf.rxmode.mtu;
>   
>   	/* rss template */
>   	err = hinic_config_mq_mode(dev, TRUE);
> @@ -1530,7 +1530,6 @@ static void hinic_deinit_mac_addr(struct rte_eth_dev *eth_dev)
>   static int hinic_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   {
>   	struct hinic_nic_dev *nic_dev = HINIC_ETH_DEV_TO_PRIVATE_NIC_DEV(dev);
> -	uint32_t frame_size;
>   	int ret = 0;
>   
>   	PMD_DRV_LOG(INFO, "Set port mtu, port_id: %d, mtu: %d, max_pkt_len: %d",
> @@ -1548,16 +1547,13 @@ static int hinic_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   		return ret;
>   	}
>   
> -	/* update max frame size */
> -	frame_size = HINIC_MTU_TO_PKTLEN(mtu);
> -	if (frame_size > HINIC_ETH_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		dev->data->dev_conf.rxmode.offloads |=
>   			DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		dev->data->dev_conf.rxmode.offloads &=
>   			~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
>   	nic_dev->mtu_size = mtu;
>   
>   	return ret;
> diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
> index 7d37004972bf..4ead227f9122 100644
> --- a/drivers/net/hns3/hns3_ethdev.c
> +++ b/drivers/net/hns3/hns3_ethdev.c
> @@ -2371,41 +2371,6 @@ hns3_init_ring_with_vector(struct hns3_hw *hw)
>   	return 0;
>   }
>   
> -static int
> -hns3_refresh_mtu(struct rte_eth_dev *dev, struct rte_eth_conf *conf)
> -{
> -	struct hns3_adapter *hns = dev->data->dev_private;
> -	struct hns3_hw *hw = &hns->hw;
> -	uint32_t max_rx_pkt_len;
> -	uint16_t mtu;
> -	int ret;
> -
> -	if (!(conf->rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME))
> -		return 0;
> -
> -	/*
> -	 * If jumbo frames are enabled, MTU needs to be refreshed
> -	 * according to the maximum RX packet length.
> -	 */
> -	max_rx_pkt_len = conf->rxmode.max_rx_pkt_len;
> -	if (max_rx_pkt_len > HNS3_MAX_FRAME_LEN ||
> -	    max_rx_pkt_len <= HNS3_DEFAULT_FRAME_LEN) {
> -		hns3_err(hw, "maximum Rx packet length must be greater than %u "
> -			 "and no more than %u when jumbo frame enabled.",
> -			 (uint16_t)HNS3_DEFAULT_FRAME_LEN,
> -			 (uint16_t)HNS3_MAX_FRAME_LEN);
> -		return -EINVAL;
> -	}
> -
> -	mtu = (uint16_t)HNS3_PKTLEN_TO_MTU(max_rx_pkt_len);
> -	ret = hns3_dev_mtu_set(dev, mtu);
> -	if (ret)
> -		return ret;
> -	dev->data->mtu = mtu;
> -
> -	return 0;
> -}
> -
>   static int
>   hns3_setup_dcb(struct rte_eth_dev *dev)
>   {
> @@ -2520,8 +2485,8 @@ hns3_dev_configure(struct rte_eth_dev *dev)
>   			goto cfg_err;
>   	}
>   
> -	ret = hns3_refresh_mtu(dev, conf);
> -	if (ret)
> +	ret = hns3_dev_mtu_set(dev, conf->rxmode.mtu);
> +	if (ret != 0)
>   		goto cfg_err;
>   
>   	ret = hns3_mbuf_dyn_rx_timestamp_register(dev, conf);
> @@ -2616,7 +2581,7 @@ hns3_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	}
>   
>   	rte_spinlock_lock(&hw->lock);
> -	is_jumbo_frame = frame_size > HNS3_DEFAULT_FRAME_LEN ? true : false;
> +	is_jumbo_frame = mtu > RTE_ETHER_MTU ? true : false;
>   	frame_size = RTE_MAX(frame_size, HNS3_DEFAULT_FRAME_LEN);
>   
>   	/*
> @@ -2637,7 +2602,6 @@ hns3_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	else
>   		dev->data->dev_conf.rxmode.offloads &=
>   						~DEV_RX_OFFLOAD_JUMBO_FRAME;
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
>   	rte_spinlock_unlock(&hw->lock);
>   
>   	return 0;
> diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
> index 8d9b7979c806..0b5db486f8d6 100644
> --- a/drivers/net/hns3/hns3_ethdev_vf.c
> +++ b/drivers/net/hns3/hns3_ethdev_vf.c
> @@ -784,8 +784,6 @@ hns3vf_dev_configure(struct rte_eth_dev *dev)
>   	uint16_t nb_rx_q = dev->data->nb_rx_queues;
>   	uint16_t nb_tx_q = dev->data->nb_tx_queues;
>   	struct rte_eth_rss_conf rss_conf;
> -	uint32_t max_rx_pkt_len;
> -	uint16_t mtu;
>   	bool gro_en;
>   	int ret;
>   
> @@ -825,28 +823,9 @@ hns3vf_dev_configure(struct rte_eth_dev *dev)
>   			goto cfg_err;
>   	}
>   
> -	/*
> -	 * If jumbo frames are enabled, MTU needs to be refreshed
> -	 * according to the maximum RX packet length.
> -	 */
> -	if (conf->rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		max_rx_pkt_len = conf->rxmode.max_rx_pkt_len;
> -		if (max_rx_pkt_len > HNS3_MAX_FRAME_LEN ||
> -		    max_rx_pkt_len <= HNS3_DEFAULT_FRAME_LEN) {
> -			hns3_err(hw, "maximum Rx packet length must be greater "
> -				 "than %u and less than %u when jumbo frame enabled.",
> -				 (uint16_t)HNS3_DEFAULT_FRAME_LEN,
> -				 (uint16_t)HNS3_MAX_FRAME_LEN);
> -			ret = -EINVAL;
> -			goto cfg_err;
> -		}
> -
> -		mtu = (uint16_t)HNS3_PKTLEN_TO_MTU(max_rx_pkt_len);
> -		ret = hns3vf_dev_mtu_set(dev, mtu);
> -		if (ret)
> -			goto cfg_err;
> -		dev->data->mtu = mtu;
> -	}
> +	ret = hns3vf_dev_mtu_set(dev, conf->rxmode.mtu);
> +	if (ret != 0)
> +		goto cfg_err;
>   
>   	ret = hns3vf_dev_configure_vlan(dev);
>   	if (ret)
> @@ -935,7 +914,6 @@ hns3vf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	else
>   		dev->data->dev_conf.rxmode.offloads &=
>   						~DEV_RX_OFFLOAD_JUMBO_FRAME;
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
>   	rte_spinlock_unlock(&hw->lock);
>   
>   	return 0;
> diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
> index 481872e3957f..a260212f73f1 100644
> --- a/drivers/net/hns3/hns3_rxtx.c
> +++ b/drivers/net/hns3/hns3_rxtx.c
> @@ -1735,18 +1735,18 @@ hns3_rxq_conf_runtime_check(struct hns3_hw *hw, uint16_t buf_size,
>   				uint16_t nb_desc)
>   {
>   	struct rte_eth_dev *dev = &rte_eth_devices[hw->data->port_id];
> -	struct rte_eth_rxmode *rxmode = &hw->data->dev_conf.rxmode;
>   	eth_rx_burst_t pkt_burst = dev->rx_pkt_burst;
> +	uint32_t frame_size = dev->data->mtu + HNS3_ETH_OVERHEAD;
>   	uint16_t min_vec_bds;
>   
>   	/*
>   	 * HNS3 hardware network engine set scattered as default. If the driver
>   	 * is not work in scattered mode and the pkts greater than buf_size
> -	 * but smaller than max_rx_pkt_len will be distributed to multiple BDs.
> +	 * but smaller than frame size will be distributed to multiple BDs.
>   	 * Driver cannot handle this situation.
>   	 */
> -	if (!hw->data->scattered_rx && rxmode->max_rx_pkt_len > buf_size) {
> -		hns3_err(hw, "max_rx_pkt_len is not allowed to be set greater "
> +	if (!hw->data->scattered_rx && frame_size > buf_size) {
> +		hns3_err(hw, "frame size is not allowed to be set greater "
>   			     "than rx_buf_len if scattered is off.");
>   		return -EINVAL;
>   	}
> @@ -1958,7 +1958,7 @@ hns3_rx_scattered_calc(struct rte_eth_dev *dev)
>   	}
>   
>   	if (dev_conf->rxmode.offloads & DEV_RX_OFFLOAD_SCATTER ||
> -	    dev_conf->rxmode.max_rx_pkt_len > hw->rx_buf_len)
> +	    dev->data->mtu + HNS3_ETH_OVERHEAD > hw->rx_buf_len)
>   		dev->data->scattered_rx = true;
>   }
>   
Acked-by: Huisong Li <lihuisong@huawei.com>
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index bd97d93dd746..ab571a921f9e 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -11775,14 +11775,10 @@ i40e_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   		return -EBUSY;
>   	}
>   
> -	if (frame_size > I40E_ETH_MAX_LEN)
> -		dev_data->dev_conf.rxmode.offloads |=
> -			DEV_RX_OFFLOAD_JUMBO_FRAME;
> +	if (mtu > RTE_ETHER_MTU)
> +		dev_data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
> -		dev_data->dev_conf.rxmode.offloads &=
> -			~DEV_RX_OFFLOAD_JUMBO_FRAME;
> -
> -	dev_data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> +		dev_data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
>   	return ret;
>   }
> diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
> index d5847ac6b546..1d27cf2b0a01 100644
> --- a/drivers/net/i40e/i40e_rxtx.c
> +++ b/drivers/net/i40e/i40e_rxtx.c
> @@ -2909,8 +2909,8 @@ i40e_rx_queue_config(struct i40e_rx_queue *rxq)
>   	}
>   
>   	rxq->max_pkt_len =
> -		RTE_MIN((uint32_t)(hw->func_caps.rx_buf_chain_len *
> -			rxq->rx_buf_len), data->dev_conf.rxmode.max_rx_pkt_len);
> +		RTE_MIN(hw->func_caps.rx_buf_chain_len * rxq->rx_buf_len,
> +				data->mtu + I40E_ETH_OVERHEAD);
>   	if (data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
>   		if (rxq->max_pkt_len <= I40E_ETH_MAX_LEN ||
>   			rxq->max_pkt_len > I40E_FRAME_SIZE_MAX) {
> diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
> index 5a5a7f59e152..0eabce275d92 100644
> --- a/drivers/net/iavf/iavf_ethdev.c
> +++ b/drivers/net/iavf/iavf_ethdev.c
> @@ -576,13 +576,14 @@ iavf_init_rxq(struct rte_eth_dev *dev, struct iavf_rx_queue *rxq)
>   	struct iavf_hw *hw = IAVF_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>   	struct rte_eth_dev_data *dev_data = dev->data;
>   	uint16_t buf_size, max_pkt_len;
> +	uint32_t frame_size = dev->data->mtu + IAVF_ETH_OVERHEAD;
>   
>   	buf_size = rte_pktmbuf_data_room_size(rxq->mp) - RTE_PKTMBUF_HEADROOM;
>   
>   	/* Calculate the maximum packet length allowed */
>   	max_pkt_len = RTE_MIN((uint32_t)
>   			rxq->rx_buf_len * IAVF_MAX_CHAINED_RX_BUFFERS,
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +			frame_size);
>   
>   	/* Check if the jumbo frame and maximum packet length are set
>   	 * correctly.
> @@ -839,7 +840,7 @@ iavf_dev_start(struct rte_eth_dev *dev)
>   
>   	adapter->stopped = 0;
>   
> -	vf->max_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	vf->max_pkt_len = dev->data->mtu + IAVF_ETH_OVERHEAD;
>   	vf->num_queue_pairs = RTE_MAX(dev->data->nb_rx_queues,
>   				      dev->data->nb_tx_queues);
>   	num_queue_pairs = vf->num_queue_pairs;
> @@ -1472,15 +1473,13 @@ iavf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   		return -EBUSY;
>   	}
>   
> -	if (frame_size > IAVF_ETH_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		dev->data->dev_conf.rxmode.offloads |=
>   				DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		dev->data->dev_conf.rxmode.offloads &=
>   				~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
>   	return ret;
>   }
>   
> diff --git a/drivers/net/ice/ice_dcf_ethdev.c b/drivers/net/ice/ice_dcf_ethdev.c
> index 4e4cdbcd7d71..c3c7ad88f250 100644
> --- a/drivers/net/ice/ice_dcf_ethdev.c
> +++ b/drivers/net/ice/ice_dcf_ethdev.c
> @@ -66,9 +66,8 @@ ice_dcf_init_rxq(struct rte_eth_dev *dev, struct ice_rx_queue *rxq)
>   	buf_size = rte_pktmbuf_data_room_size(rxq->mp) - RTE_PKTMBUF_HEADROOM;
>   	rxq->rx_hdr_len = 0;
>   	rxq->rx_buf_len = RTE_ALIGN(buf_size, (1 << ICE_RLAN_CTX_DBUF_S));
> -	max_pkt_len = RTE_MIN((uint32_t)
> -			      ICE_SUPPORT_CHAIN_NUM * rxq->rx_buf_len,
> -			      dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +	max_pkt_len = RTE_MIN(ICE_SUPPORT_CHAIN_NUM * rxq->rx_buf_len,
> +			      dev->data->mtu + ICE_ETH_OVERHEAD);
>   
>   	/* Check if the jumbo frame and maximum packet length are set
>   	 * correctly.
> diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
> index 9ab7704ff003..8ee1335ac6cf 100644
> --- a/drivers/net/ice/ice_ethdev.c
> +++ b/drivers/net/ice/ice_ethdev.c
> @@ -3603,8 +3603,8 @@ ice_dev_start(struct rte_eth_dev *dev)
>   	pf->adapter_stopped = false;
>   
>   	/* Set the max frame size to default value*/
> -	max_frame_size = pf->dev_data->dev_conf.rxmode.max_rx_pkt_len ?
> -		pf->dev_data->dev_conf.rxmode.max_rx_pkt_len :
> +	max_frame_size = pf->dev_data->mtu ?
> +		pf->dev_data->mtu + ICE_ETH_OVERHEAD :
>   		ICE_FRAME_SIZE_MAX;
>   
>   	/* Set the max frame size to HW*/
> @@ -3992,14 +3992,10 @@ ice_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   		return -EBUSY;
>   	}
>   
> -	if (frame_size > ICE_ETH_MAX_LEN)
> -		dev_data->dev_conf.rxmode.offloads |=
> -			DEV_RX_OFFLOAD_JUMBO_FRAME;
> +	if (mtu > RTE_ETHER_MTU)
> +		dev_data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
> -		dev_data->dev_conf.rxmode.offloads &=
> -			~DEV_RX_OFFLOAD_JUMBO_FRAME;
> -
> -	dev_data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> +		dev_data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
>   	return 0;
>   }
> diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
> index 83fb788e6930..f9ef6ce57277 100644
> --- a/drivers/net/ice/ice_rxtx.c
> +++ b/drivers/net/ice/ice_rxtx.c
> @@ -271,15 +271,16 @@ ice_program_hw_rx_queue(struct ice_rx_queue *rxq)
>   	uint32_t rxdid = ICE_RXDID_COMMS_OVS;
>   	uint32_t regval;
>   	struct ice_adapter *ad = rxq->vsi->adapter;
> +	uint32_t frame_size = dev_data->mtu + ICE_ETH_OVERHEAD;
>   
>   	/* Set buffer size as the head split is disabled. */
>   	buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mp) -
>   			      RTE_PKTMBUF_HEADROOM);
>   	rxq->rx_hdr_len = 0;
>   	rxq->rx_buf_len = RTE_ALIGN(buf_size, (1 << ICE_RLAN_CTX_DBUF_S));
> -	rxq->max_pkt_len = RTE_MIN((uint32_t)
> -				   ICE_SUPPORT_CHAIN_NUM * rxq->rx_buf_len,
> -				   dev_data->dev_conf.rxmode.max_rx_pkt_len);
> +	rxq->max_pkt_len =
> +		RTE_MIN((uint32_t)ICE_SUPPORT_CHAIN_NUM * rxq->rx_buf_len,
> +			frame_size);
>   
>   	if (rxmode->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
>   		if (rxq->max_pkt_len <= ICE_ETH_MAX_LEN ||
> @@ -385,11 +386,8 @@ ice_program_hw_rx_queue(struct ice_rx_queue *rxq)
>   		return -EINVAL;
>   	}
>   
> -	buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mp) -
> -			      RTE_PKTMBUF_HEADROOM);
> -
>   	/* Check if scattered RX needs to be used. */
> -	if (rxq->max_pkt_len > buf_size)
> +	if (frame_size > buf_size)
>   		dev_data->scattered_rx = 1;
>   
>   	rxq->qrx_tail = hw->hw_addr + QRX_TAIL(rxq->reg_idx);
> diff --git a/drivers/net/igc/igc_ethdev.c b/drivers/net/igc/igc_ethdev.c
> index 224a0954836b..b26723064b07 100644
> --- a/drivers/net/igc/igc_ethdev.c
> +++ b/drivers/net/igc/igc_ethdev.c
> @@ -20,13 +20,6 @@
>   
>   #define IGC_INTEL_VENDOR_ID		0x8086
>   
> -/*
> - * The overhead from MTU to max frame size.
> - * Considering VLAN so tag needs to be counted.
> - */
> -#define IGC_ETH_OVERHEAD		(RTE_ETHER_HDR_LEN + \
> -					RTE_ETHER_CRC_LEN + VLAN_TAG_SIZE)
> -
>   #define IGC_FC_PAUSE_TIME		0x0680
>   #define IGC_LINK_UPDATE_CHECK_TIMEOUT	90  /* 9s */
>   #define IGC_LINK_UPDATE_CHECK_INTERVAL	100 /* ms */
> @@ -1602,21 +1595,15 @@ eth_igc_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   
>   	/* switch to jumbo mode if needed */
>   	if (mtu > RTE_ETHER_MTU) {
> -		dev->data->dev_conf.rxmode.offloads |=
> -			DEV_RX_OFFLOAD_JUMBO_FRAME;
> +		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   		rctl |= IGC_RCTL_LPE;
>   	} else {
> -		dev->data->dev_conf.rxmode.offloads &=
> -			~DEV_RX_OFFLOAD_JUMBO_FRAME;
> +		dev->data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   		rctl &= ~IGC_RCTL_LPE;
>   	}
>   	IGC_WRITE_REG(hw, IGC_RCTL, rctl);
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
> -	IGC_WRITE_REG(hw, IGC_RLPML,
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +	IGC_WRITE_REG(hw, IGC_RLPML, frame_size);
>   
>   	return 0;
>   }
> @@ -2486,6 +2473,7 @@ static int
>   igc_vlan_hw_extend_disable(struct rte_eth_dev *dev)
>   {
>   	struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev);
> +	uint32_t frame_size = dev->data->mtu + IGC_ETH_OVERHEAD;
>   	uint32_t ctrl_ext;
>   
>   	ctrl_ext = IGC_READ_REG(hw, IGC_CTRL_EXT);
> @@ -2494,23 +2482,14 @@ igc_vlan_hw_extend_disable(struct rte_eth_dev *dev)
>   	if ((ctrl_ext & IGC_CTRL_EXT_EXT_VLAN) == 0)
>   		return 0;
>   
> -	if ((dev->data->dev_conf.rxmode.offloads &
> -			DEV_RX_OFFLOAD_JUMBO_FRAME) == 0)
> -		goto write_ext_vlan;
> -
>   	/* Update maximum packet length */
> -	if (dev->data->dev_conf.rxmode.max_rx_pkt_len <
> -		RTE_ETHER_MIN_MTU + VLAN_TAG_SIZE) {
> +	if (frame_size < RTE_ETHER_MIN_MTU + VLAN_TAG_SIZE) {
>   		PMD_DRV_LOG(ERR, "Maximum packet length %u error, min is %u",
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len,
> -			VLAN_TAG_SIZE + RTE_ETHER_MIN_MTU);
> +			frame_size, VLAN_TAG_SIZE + RTE_ETHER_MIN_MTU);
>   		return -EINVAL;
>   	}
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len -= VLAN_TAG_SIZE;
> -	IGC_WRITE_REG(hw, IGC_RLPML,
> -		dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +	IGC_WRITE_REG(hw, IGC_RLPML, frame_size - VLAN_TAG_SIZE);
>   
> -write_ext_vlan:
>   	IGC_WRITE_REG(hw, IGC_CTRL_EXT, ctrl_ext & ~IGC_CTRL_EXT_EXT_VLAN);
>   	return 0;
>   }
> @@ -2519,6 +2498,7 @@ static int
>   igc_vlan_hw_extend_enable(struct rte_eth_dev *dev)
>   {
>   	struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev);
> +	uint32_t frame_size = dev->data->mtu + IGC_ETH_OVERHEAD;
>   	uint32_t ctrl_ext;
>   
>   	ctrl_ext = IGC_READ_REG(hw, IGC_CTRL_EXT);
> @@ -2527,23 +2507,14 @@ igc_vlan_hw_extend_enable(struct rte_eth_dev *dev)
>   	if (ctrl_ext & IGC_CTRL_EXT_EXT_VLAN)
>   		return 0;
>   
> -	if ((dev->data->dev_conf.rxmode.offloads &
> -			DEV_RX_OFFLOAD_JUMBO_FRAME) == 0)
> -		goto write_ext_vlan;
> -
>   	/* Update maximum packet length */
> -	if (dev->data->dev_conf.rxmode.max_rx_pkt_len >
> -		MAX_RX_JUMBO_FRAME_SIZE - VLAN_TAG_SIZE) {
> +	if (frame_size > MAX_RX_JUMBO_FRAME_SIZE) {
>   		PMD_DRV_LOG(ERR, "Maximum packet length %u error, max is %u",
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len +
> -			VLAN_TAG_SIZE, MAX_RX_JUMBO_FRAME_SIZE);
> +			frame_size, MAX_RX_JUMBO_FRAME_SIZE);
>   		return -EINVAL;
>   	}
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len += VLAN_TAG_SIZE;
> -	IGC_WRITE_REG(hw, IGC_RLPML,
> -		dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +	IGC_WRITE_REG(hw, IGC_RLPML, frame_size);
>   
> -write_ext_vlan:
>   	IGC_WRITE_REG(hw, IGC_CTRL_EXT, ctrl_ext | IGC_CTRL_EXT_EXT_VLAN);
>   	return 0;
>   }
> diff --git a/drivers/net/igc/igc_ethdev.h b/drivers/net/igc/igc_ethdev.h
> index 7b6c209df3b6..b3473b5b1646 100644
> --- a/drivers/net/igc/igc_ethdev.h
> +++ b/drivers/net/igc/igc_ethdev.h
> @@ -35,6 +35,13 @@ extern "C" {
>   #define IGC_HKEY_REG_SIZE		IGC_DEFAULT_REG_SIZE
>   #define IGC_HKEY_SIZE			(IGC_HKEY_REG_SIZE * IGC_HKEY_MAX_INDEX)
>   
> +/*
> + * The overhead from MTU to max frame size.
> + * Considering VLAN so tag needs to be counted.
> + */
> +#define IGC_ETH_OVERHEAD		(RTE_ETHER_HDR_LEN + \
> +					RTE_ETHER_CRC_LEN + VLAN_TAG_SIZE * 2)
> +
>   /*
>    * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be
>    * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary.
> diff --git a/drivers/net/igc/igc_txrx.c b/drivers/net/igc/igc_txrx.c
> index b5489eedd220..28d3076439c3 100644
> --- a/drivers/net/igc/igc_txrx.c
> +++ b/drivers/net/igc/igc_txrx.c
> @@ -1081,7 +1081,7 @@ igc_rx_init(struct rte_eth_dev *dev)
>   	struct igc_rx_queue *rxq;
>   	struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev);
>   	uint64_t offloads = dev->data->dev_conf.rxmode.offloads;
> -	uint32_t max_rx_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	uint32_t max_rx_pktlen;
>   	uint32_t rctl;
>   	uint32_t rxcsum;
>   	uint16_t buf_size;
> @@ -1099,17 +1099,17 @@ igc_rx_init(struct rte_eth_dev *dev)
>   	IGC_WRITE_REG(hw, IGC_RCTL, rctl & ~IGC_RCTL_EN);
>   
>   	/* Configure support of jumbo frames, if any. */
> -	if (offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> +	if ((offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) != 0)
>   		rctl |= IGC_RCTL_LPE;
> -
> -		/*
> -		 * Set maximum packet length by default, and might be updated
> -		 * together with enabling/disabling dual VLAN.
> -		 */
> -		IGC_WRITE_REG(hw, IGC_RLPML, max_rx_pkt_len);
> -	} else {
> +	else
>   		rctl &= ~IGC_RCTL_LPE;
> -	}
> +
> +	max_rx_pktlen = dev->data->mtu + IGC_ETH_OVERHEAD;
> +	/*
> +	 * Set maximum packet length by default, and might be updated
> +	 * together with enabling/disabling dual VLAN.
> +	 */
> +	IGC_WRITE_REG(hw, IGC_RLPML, max_rx_pktlen);
>   
>   	/* Configure and enable each RX queue. */
>   	rctl_bsize = 0;
> @@ -1168,7 +1168,7 @@ igc_rx_init(struct rte_eth_dev *dev)
>   					IGC_SRRCTL_BSIZEPKT_SHIFT);
>   
>   			/* It adds dual VLAN length for supporting dual VLAN */
> -			if (max_rx_pkt_len + 2 * VLAN_TAG_SIZE > buf_size)
> +			if (max_rx_pktlen > buf_size)
>   				dev->data->scattered_rx = 1;
>   		} else {
>   			/*
> diff --git a/drivers/net/ionic/ionic_ethdev.c b/drivers/net/ionic/ionic_ethdev.c
> index e6207939665e..97447a10e46a 100644
> --- a/drivers/net/ionic/ionic_ethdev.c
> +++ b/drivers/net/ionic/ionic_ethdev.c
> @@ -343,25 +343,15 @@ static int
>   ionic_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
>   {
>   	struct ionic_lif *lif = IONIC_ETH_DEV_TO_LIF(eth_dev);
> -	uint32_t max_frame_size;
>   	int err;
>   
>   	IONIC_PRINT_CALL();
>   
>   	/*
>   	 * Note: mtu check against IONIC_MIN_MTU, IONIC_MAX_MTU
> -	 * is done by the the API.
> +	 * is done by the API.
>   	 */
>   
> -	/*
> -	 * Max frame size is MTU + Ethernet header + VLAN + QinQ
> -	 * (plus ETHER_CRC_LEN if the adapter is able to keep CRC)
> -	 */
> -	max_frame_size = mtu + RTE_ETHER_HDR_LEN + 4 + 4;
> -
> -	if (eth_dev->data->dev_conf.rxmode.max_rx_pkt_len < max_frame_size)
> -		return -EINVAL;
> -
>   	err = ionic_lif_change_mtu(lif, mtu);
>   	if (err)
>   		return err;
> diff --git a/drivers/net/ionic/ionic_rxtx.c b/drivers/net/ionic/ionic_rxtx.c
> index b83ea1bcaa6a..3f5fc66abf71 100644
> --- a/drivers/net/ionic/ionic_rxtx.c
> +++ b/drivers/net/ionic/ionic_rxtx.c
> @@ -773,7 +773,7 @@ ionic_rx_clean(struct ionic_rx_qcq *rxq,
>   	struct ionic_rxq_comp *cq_desc = &cq_desc_base[cq_desc_index];
>   	struct rte_mbuf *rxm, *rxm_seg;
>   	uint32_t max_frame_size =
> -		rxq->qcq.lif->eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +		rxq->qcq.lif->eth_dev->data->mtu + RTE_ETHER_HDR_LEN;
>   	uint64_t pkt_flags = 0;
>   	uint32_t pkt_type;
>   	struct ionic_rx_stats *stats = &rxq->stats;
> @@ -1016,7 +1016,7 @@ ionic_rx_fill(struct ionic_rx_qcq *rxq, uint32_t len)
>   int __rte_cold
>   ionic_dev_rx_queue_start(struct rte_eth_dev *eth_dev, uint16_t rx_queue_id)
>   {
> -	uint32_t frame_size = eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	uint32_t frame_size = eth_dev->data->mtu + RTE_ETHER_HDR_LEN;
>   	uint8_t *rx_queue_state = eth_dev->data->rx_queue_state;
>   	struct ionic_rx_qcq *rxq;
>   	int err;
> @@ -1130,7 +1130,7 @@ ionic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
>   {
>   	struct ionic_rx_qcq *rxq = rx_queue;
>   	uint32_t frame_size =
> -		rxq->qcq.lif->eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +		rxq->qcq.lif->eth_dev->data->mtu + RTE_ETHER_HDR_LEN;
>   	struct ionic_rx_service service_cb_arg;
>   
>   	service_cb_arg.rx_pkts = rx_pkts;
> diff --git a/drivers/net/ipn3ke/ipn3ke_representor.c b/drivers/net/ipn3ke/ipn3ke_representor.c
> index 589d9fa5877d..3634c0c8c5f0 100644
> --- a/drivers/net/ipn3ke/ipn3ke_representor.c
> +++ b/drivers/net/ipn3ke/ipn3ke_representor.c
> @@ -2801,14 +2801,10 @@ ipn3ke_rpst_mtu_set(struct rte_eth_dev *ethdev, uint16_t mtu)
>   		return -EBUSY;
>   	}
>   
> -	if (frame_size > IPN3KE_ETH_MAX_LEN)
> -		dev_data->dev_conf.rxmode.offloads |=
> -			(uint64_t)(DEV_RX_OFFLOAD_JUMBO_FRAME);
> +	if (mtu > RTE_ETHER_MTU)
> +		dev_data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
> -		dev_data->dev_conf.rxmode.offloads &=
> -			(uint64_t)(~DEV_RX_OFFLOAD_JUMBO_FRAME);
> -
> -	dev_data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> +		dev_data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
>   	if (rpst->i40e_pf_eth) {
>   		ret = rpst->i40e_pf_eth->dev_ops->mtu_set(rpst->i40e_pf_eth,
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
> index 8b33897ca167..e5ddae219182 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -5174,7 +5174,6 @@ ixgbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	struct ixgbe_hw *hw;
>   	struct rte_eth_dev_info dev_info;
>   	uint32_t frame_size = mtu + IXGBE_ETH_OVERHEAD;
> -	struct rte_eth_dev_data *dev_data = dev->data;
>   	int ret;
>   
>   	ret = ixgbe_dev_info_get(dev, &dev_info);
> @@ -5188,9 +5187,9 @@ ixgbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	/* If device is started, refuse mtu that requires the support of
>   	 * scattered packets when this feature has not been enabled before.
>   	 */
> -	if (dev_data->dev_started && !dev_data->scattered_rx &&
> -	    (frame_size + 2 * IXGBE_VLAN_TAG_SIZE >
> -	     dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM)) {
> +	if (dev->data->dev_started && !dev->data->scattered_rx &&
> +	    frame_size + 2 * IXGBE_VLAN_TAG_SIZE >
> +			dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM) {
>   		PMD_INIT_LOG(ERR, "Stop port first.");
>   		return -EINVAL;
>   	}
> @@ -5199,23 +5198,18 @@ ixgbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
>   
>   	/* switch to jumbo mode if needed */
> -	if (frame_size > IXGBE_ETH_MAX_LEN) {
> -		dev->data->dev_conf.rxmode.offloads |=
> -			DEV_RX_OFFLOAD_JUMBO_FRAME;
> +	if (mtu > RTE_ETHER_MTU) {
> +		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   		hlreg0 |= IXGBE_HLREG0_JUMBOEN;
>   	} else {
> -		dev->data->dev_conf.rxmode.offloads &=
> -			~DEV_RX_OFFLOAD_JUMBO_FRAME;
> +		dev->data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   		hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
>   	}
>   	IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
>   	maxfrs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
>   	maxfrs &= 0x0000FFFF;
> -	maxfrs |= (dev->data->dev_conf.rxmode.max_rx_pkt_len << 16);
> +	maxfrs |= (frame_size << 16);
>   	IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, maxfrs);
>   
>   	return 0;
> @@ -6272,12 +6266,10 @@ ixgbe_set_queue_rate_limit(struct rte_eth_dev *dev,
>   	 * set as 0x4.
>   	 */
>   	if ((rxmode->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) &&
> -	    (rxmode->max_rx_pkt_len >= IXGBE_MAX_JUMBO_FRAME_SIZE))
> -		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM,
> -			IXGBE_MMW_SIZE_JUMBO_FRAME);
> +	    (dev->data->mtu + IXGBE_ETH_OVERHEAD >= IXGBE_MAX_JUMBO_FRAME_SIZE))
> +		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, IXGBE_MMW_SIZE_JUMBO_FRAME);
>   	else
> -		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM,
> -			IXGBE_MMW_SIZE_DEFAULT);
> +		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, IXGBE_MMW_SIZE_DEFAULT);
>   
>   	/* Set RTTBCNRC of queue X */
>   	IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_idx);
> @@ -6549,8 +6541,7 @@ ixgbevf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   
>   	hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>   
> -	if (mtu < RTE_ETHER_MIN_MTU ||
> -			max_frame > RTE_ETHER_MAX_JUMBO_FRAME_LEN)
> +	if (mtu < RTE_ETHER_MIN_MTU || max_frame > RTE_ETHER_MAX_JUMBO_FRAME_LEN)
>   		return -EINVAL;
>   
>   	/* If device is started, refuse mtu that requires the support of
> @@ -6558,7 +6549,7 @@ ixgbevf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   	 */
>   	if (dev_data->dev_started && !dev_data->scattered_rx &&
>   	    (max_frame + 2 * IXGBE_VLAN_TAG_SIZE >
> -	     dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM)) {
> +			dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM)) {
>   		PMD_INIT_LOG(ERR, "Stop port first.");
>   		return -EINVAL;
>   	}
> @@ -6575,8 +6566,6 @@ ixgbevf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   	if (ixgbevf_rlpml_set_vf(hw, max_frame))
>   		return -EINVAL;
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = max_frame;
>   	return 0;
>   }
>   
> diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
> index fbf2b17d160f..9bcbc445f2d0 100644
> --- a/drivers/net/ixgbe/ixgbe_pf.c
> +++ b/drivers/net/ixgbe/ixgbe_pf.c
> @@ -576,8 +576,7 @@ ixgbe_set_vf_lpe(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
>   			  * if PF has jumbo frames enabled which means legacy
>   			  * VFs are disabled.
>   			  */
> -			if (dev->data->dev_conf.rxmode.max_rx_pkt_len >
> -			    IXGBE_ETH_MAX_LEN)
> +			if (dev->data->mtu > RTE_ETHER_MTU)
>   				break;
>   			/* fall through */
>   		default:
> @@ -587,8 +586,7 @@ ixgbe_set_vf_lpe(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
>   			 * legacy VFs.
>   			 */
>   			if (max_frame > IXGBE_ETH_MAX_LEN ||
> -			    dev->data->dev_conf.rxmode.max_rx_pkt_len >
> -			    IXGBE_ETH_MAX_LEN)
> +					dev->data->mtu > RTE_ETHER_MTU)
>   				return -1;
>   			break;
>   		}
> diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
> index bfdfd5e755de..03991711fd6e 100644
> --- a/drivers/net/ixgbe/ixgbe_rxtx.c
> +++ b/drivers/net/ixgbe/ixgbe_rxtx.c
> @@ -5063,6 +5063,7 @@ ixgbe_dev_rx_init(struct rte_eth_dev *dev)
>   	uint16_t buf_size;
>   	uint16_t i;
>   	struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
> +	uint32_t frame_size = dev->data->mtu + IXGBE_ETH_OVERHEAD;
>   	int rc;
>   
>   	PMD_INIT_FUNC_TRACE();
> @@ -5098,7 +5099,7 @@ ixgbe_dev_rx_init(struct rte_eth_dev *dev)
>   		hlreg0 |= IXGBE_HLREG0_JUMBOEN;
>   		maxfrs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
>   		maxfrs &= 0x0000FFFF;
> -		maxfrs |= (rx_conf->max_rx_pkt_len << 16);
> +		maxfrs |= (frame_size << 16);
>   		IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, maxfrs);
>   	} else
>   		hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
> @@ -5172,8 +5173,7 @@ ixgbe_dev_rx_init(struct rte_eth_dev *dev)
>   				       IXGBE_SRRCTL_BSIZEPKT_SHIFT);
>   
>   		/* It adds dual VLAN length for supporting dual VLAN */
> -		if (dev->data->dev_conf.rxmode.max_rx_pkt_len +
> -					    2 * IXGBE_VLAN_TAG_SIZE > buf_size)
> +		if (frame_size + 2 * IXGBE_VLAN_TAG_SIZE > buf_size)
>   			dev->data->scattered_rx = 1;
>   		if (rxq->offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
>   			rx_conf->offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
> @@ -5653,6 +5653,7 @@ ixgbevf_dev_rx_init(struct rte_eth_dev *dev)
>   	struct ixgbe_hw     *hw;
>   	struct ixgbe_rx_queue *rxq;
>   	struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
> +	uint32_t frame_size = dev->data->mtu + IXGBE_ETH_OVERHEAD;
>   	uint64_t bus_addr;
>   	uint32_t srrctl, psrtype = 0;
>   	uint16_t buf_size;
> @@ -5689,10 +5690,9 @@ ixgbevf_dev_rx_init(struct rte_eth_dev *dev)
>   	 * ixgbevf_rlpml_set_vf even if jumbo frames are not used. This way,
>   	 * VF packets received can work in all cases.
>   	 */
> -	if (ixgbevf_rlpml_set_vf(hw,
> -	    (uint16_t)dev->data->dev_conf.rxmode.max_rx_pkt_len)) {
> +	if (ixgbevf_rlpml_set_vf(hw, frame_size) != 0) {
>   		PMD_INIT_LOG(ERR, "Set max packet length to %d failed.",
> -			     dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +			     frame_size);
>   		return -EINVAL;
>   	}
>   
> @@ -5751,8 +5751,7 @@ ixgbevf_dev_rx_init(struct rte_eth_dev *dev)
>   
>   		if (rxmode->offloads & DEV_RX_OFFLOAD_SCATTER ||
>   		    /* It adds dual VLAN length for supporting dual VLAN */
> -		    (rxmode->max_rx_pkt_len +
> -				2 * IXGBE_VLAN_TAG_SIZE) > buf_size) {
> +		    (frame_size + 2 * IXGBE_VLAN_TAG_SIZE) > buf_size) {
>   			if (!dev->data->scattered_rx)
>   				PMD_INIT_LOG(DEBUG, "forcing scatter mode");
>   			dev->data->scattered_rx = 1;
> diff --git a/drivers/net/liquidio/lio_ethdev.c b/drivers/net/liquidio/lio_ethdev.c
> index b72060a4499b..976916f870a5 100644
> --- a/drivers/net/liquidio/lio_ethdev.c
> +++ b/drivers/net/liquidio/lio_ethdev.c
> @@ -435,7 +435,6 @@ lio_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
>   {
>   	struct lio_device *lio_dev = LIO_DEV(eth_dev);
>   	uint16_t pf_mtu = lio_dev->linfo.link.s.mtu;
> -	uint32_t frame_len = mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
>   	struct lio_dev_ctrl_cmd ctrl_cmd;
>   	struct lio_ctrl_pkt ctrl_pkt;
>   
> @@ -481,16 +480,13 @@ lio_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
>   		return -1;
>   	}
>   
> -	if (frame_len > LIO_ETH_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		eth_dev->data->dev_conf.rxmode.offloads |=
>   			DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		eth_dev->data->dev_conf.rxmode.offloads &=
>   			~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
> -	eth_dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_len;
> -	eth_dev->data->mtu = mtu;
> -
>   	return 0;
>   }
>   
> @@ -1398,8 +1394,6 @@ lio_sync_link_state_check(void *eth_dev)
>   static int
>   lio_dev_start(struct rte_eth_dev *eth_dev)
>   {
> -	uint16_t mtu;
> -	uint32_t frame_len = eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
>   	struct lio_device *lio_dev = LIO_DEV(eth_dev);
>   	uint16_t timeout = LIO_MAX_CMD_TIMEOUT;
>   	int ret = 0;
> @@ -1442,15 +1436,9 @@ lio_dev_start(struct rte_eth_dev *eth_dev)
>   		goto dev_mtu_set_error;
>   	}
>   
> -	mtu = (uint16_t)(frame_len - RTE_ETHER_HDR_LEN - RTE_ETHER_CRC_LEN);
> -	if (mtu < RTE_ETHER_MIN_MTU)
> -		mtu = RTE_ETHER_MIN_MTU;
> -
> -	if (eth_dev->data->mtu != mtu) {
> -		ret = lio_dev_mtu_set(eth_dev, mtu);
> -		if (ret)
> -			goto dev_mtu_set_error;
> -	}
> +	ret = lio_dev_mtu_set(eth_dev, eth_dev->data->mtu);
> +	if (ret != 0)
> +		goto dev_mtu_set_error;
>   
>   	return 0;
>   
> diff --git a/drivers/net/mlx4/mlx4_rxq.c b/drivers/net/mlx4/mlx4_rxq.c
> index 978cbb8201ea..4a5cfd22aa71 100644
> --- a/drivers/net/mlx4/mlx4_rxq.c
> +++ b/drivers/net/mlx4/mlx4_rxq.c
> @@ -753,6 +753,7 @@ mlx4_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   	int ret;
>   	uint32_t crc_present;
>   	uint64_t offloads;
> +	uint32_t max_rx_pktlen;
>   
>   	offloads = conf->offloads | dev->data->dev_conf.rxmode.offloads;
>   
> @@ -828,13 +829,11 @@ mlx4_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   	};
>   	/* Enable scattered packets support for this queue if necessary. */
>   	MLX4_ASSERT(mb_len >= RTE_PKTMBUF_HEADROOM);
> -	if (dev->data->dev_conf.rxmode.max_rx_pkt_len <=
> -	    (mb_len - RTE_PKTMBUF_HEADROOM)) {
> +	max_rx_pktlen = dev->data->mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +	if (max_rx_pktlen <= (mb_len - RTE_PKTMBUF_HEADROOM)) {
>   		;
>   	} else if (offloads & DEV_RX_OFFLOAD_SCATTER) {
> -		uint32_t size =
> -			RTE_PKTMBUF_HEADROOM +
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +		uint32_t size = RTE_PKTMBUF_HEADROOM + max_rx_pktlen;
>   		uint32_t sges_n;
>   
>   		/*
> @@ -846,21 +845,19 @@ mlx4_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   		/* Make sure sges_n did not overflow. */
>   		size = mb_len * (1 << rxq->sges_n);
>   		size -= RTE_PKTMBUF_HEADROOM;
> -		if (size < dev->data->dev_conf.rxmode.max_rx_pkt_len) {
> +		if (size < max_rx_pktlen) {
>   			rte_errno = EOVERFLOW;
>   			ERROR("%p: too many SGEs (%u) needed to handle"
>   			      " requested maximum packet size %u",
>   			      (void *)dev,
> -			      1 << sges_n,
> -			      dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +			      1 << sges_n, max_rx_pktlen);
>   			goto error;
>   		}
>   	} else {
>   		WARN("%p: the requested maximum Rx packet size (%u) is"
>   		     " larger than a single mbuf (%u) and scattered"
>   		     " mode has not been requested",
> -		     (void *)dev,
> -		     dev->data->dev_conf.rxmode.max_rx_pkt_len,
> +		     (void *)dev, max_rx_pktlen,
>   		     mb_len - RTE_PKTMBUF_HEADROOM);
>   	}
>   	DEBUG("%p: maximum number of segments per packet: %u",
> diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
> index abd8ce798986..6f4f351222d3 100644
> --- a/drivers/net/mlx5/mlx5_rxq.c
> +++ b/drivers/net/mlx5/mlx5_rxq.c
> @@ -1330,10 +1330,11 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   	uint64_t offloads = conf->offloads |
>   			   dev->data->dev_conf.rxmode.offloads;
>   	unsigned int lro_on_queue = !!(offloads & DEV_RX_OFFLOAD_TCP_LRO);
> -	unsigned int max_rx_pkt_len = lro_on_queue ?
> +	unsigned int max_rx_pktlen = lro_on_queue ?
>   			dev->data->dev_conf.rxmode.max_lro_pkt_size :
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len;
> -	unsigned int non_scatter_min_mbuf_size = max_rx_pkt_len +
> +			dev->data->mtu + (unsigned int)RTE_ETHER_HDR_LEN +
> +				RTE_ETHER_CRC_LEN;
> +	unsigned int non_scatter_min_mbuf_size = max_rx_pktlen +
>   							RTE_PKTMBUF_HEADROOM;
>   	unsigned int max_lro_size = 0;
>   	unsigned int first_mb_free_size = mb_len - RTE_PKTMBUF_HEADROOM;
> @@ -1372,7 +1373,7 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   	 * needed to handle max size packets, replace zero length
>   	 * with the buffer length from the pool.
>   	 */
> -	tail_len = max_rx_pkt_len;
> +	tail_len = max_rx_pktlen;
>   	do {
>   		struct mlx5_eth_rxseg *hw_seg =
>   					&tmpl->rxq.rxseg[tmpl->rxq.rxseg_n];
> @@ -1410,7 +1411,7 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   				"port %u too many SGEs (%u) needed to handle"
>   				" requested maximum packet size %u, the maximum"
>   				" supported are %u", dev->data->port_id,
> -				tmpl->rxq.rxseg_n, max_rx_pkt_len,
> +				tmpl->rxq.rxseg_n, max_rx_pktlen,
>   				MLX5_MAX_RXQ_NSEG);
>   			rte_errno = ENOTSUP;
>   			goto error;
> @@ -1435,7 +1436,7 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   		DRV_LOG(ERR, "port %u Rx queue %u: Scatter offload is not"
>   			" configured and no enough mbuf space(%u) to contain "
>   			"the maximum RX packet length(%u) with head-room(%u)",
> -			dev->data->port_id, idx, mb_len, max_rx_pkt_len,
> +			dev->data->port_id, idx, mb_len, max_rx_pktlen,
>   			RTE_PKTMBUF_HEADROOM);
>   		rte_errno = ENOSPC;
>   		goto error;
> @@ -1454,7 +1455,7 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   	 * following conditions are met:
>   	 *  - MPRQ is enabled.
>   	 *  - The number of descs is more than the number of strides.
> -	 *  - max_rx_pkt_len plus overhead is less than the max size
> +	 *  - max_rx_pktlen plus overhead is less than the max size
>   	 *    of a stride or mprq_stride_size is specified by a user.
>   	 *    Need to make sure that there are enough strides to encap
>   	 *    the maximum packet size in case mprq_stride_size is set.
> @@ -1478,7 +1479,7 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   				!!(offloads & DEV_RX_OFFLOAD_SCATTER);
>   		tmpl->rxq.mprq_max_memcpy_len = RTE_MIN(first_mb_free_size,
>   				config->mprq.max_memcpy_len);
> -		max_lro_size = RTE_MIN(max_rx_pkt_len,
> +		max_lro_size = RTE_MIN(max_rx_pktlen,
>   				       (1u << tmpl->rxq.strd_num_n) *
>   				       (1u << tmpl->rxq.strd_sz_n));
>   		DRV_LOG(DEBUG,
> @@ -1487,9 +1488,9 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   			dev->data->port_id, idx,
>   			tmpl->rxq.strd_num_n, tmpl->rxq.strd_sz_n);
>   	} else if (tmpl->rxq.rxseg_n == 1) {
> -		MLX5_ASSERT(max_rx_pkt_len <= first_mb_free_size);
> +		MLX5_ASSERT(max_rx_pktlen <= first_mb_free_size);
>   		tmpl->rxq.sges_n = 0;
> -		max_lro_size = max_rx_pkt_len;
> +		max_lro_size = max_rx_pktlen;
>   	} else if (offloads & DEV_RX_OFFLOAD_SCATTER) {
>   		unsigned int sges_n;
>   
> @@ -1511,13 +1512,13 @@ mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   				"port %u too many SGEs (%u) needed to handle"
>   				" requested maximum packet size %u, the maximum"
>   				" supported are %u", dev->data->port_id,
> -				1 << sges_n, max_rx_pkt_len,
> +				1 << sges_n, max_rx_pktlen,
>   				1u << MLX5_MAX_LOG_RQ_SEGS);
>   			rte_errno = ENOTSUP;
>   			goto error;
>   		}
>   		tmpl->rxq.sges_n = sges_n;
> -		max_lro_size = max_rx_pkt_len;
> +		max_lro_size = max_rx_pktlen;
>   	}
>   	if (config->mprq.enabled && !mlx5_rxq_mprq_enabled(&tmpl->rxq))
>   		DRV_LOG(WARNING,
> diff --git a/drivers/net/mvneta/mvneta_ethdev.c b/drivers/net/mvneta/mvneta_ethdev.c
> index a3ee15020466..520c6fdb1d31 100644
> --- a/drivers/net/mvneta/mvneta_ethdev.c
> +++ b/drivers/net/mvneta/mvneta_ethdev.c
> @@ -126,10 +126,6 @@ mvneta_dev_configure(struct rte_eth_dev *dev)
>   		return -EINVAL;
>   	}
>   
> -	if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
> -		dev->data->mtu = dev->data->dev_conf.rxmode.max_rx_pkt_len -
> -				 MRVL_NETA_ETH_HDRS_LEN;
> -
>   	if (dev->data->dev_conf.txmode.offloads & DEV_TX_OFFLOAD_MULTI_SEGS)
>   		priv->multiseg = 1;
>   
> @@ -261,9 +257,6 @@ mvneta_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   		return -EINVAL;
>   	}
>   
> -	dev->data->mtu = mtu;
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = mru - MV_MH_SIZE;
> -
>   	if (!priv->ppio)
>   		/* It is OK. New MTU will be set later on mvneta_dev_start */
>   		return 0;
> diff --git a/drivers/net/mvneta/mvneta_rxtx.c b/drivers/net/mvneta/mvneta_rxtx.c
> index dfa7ecc09039..2cd4fb31348b 100644
> --- a/drivers/net/mvneta/mvneta_rxtx.c
> +++ b/drivers/net/mvneta/mvneta_rxtx.c
> @@ -708,19 +708,18 @@ mvneta_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   	struct mvneta_priv *priv = dev->data->dev_private;
>   	struct mvneta_rxq *rxq;
>   	uint32_t frame_size, buf_size = rte_pktmbuf_data_room_size(mp);
> -	uint32_t max_rx_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	uint32_t max_rx_pktlen = dev->data->mtu + RTE_ETHER_HDR_LEN;
>   
>   	frame_size = buf_size - RTE_PKTMBUF_HEADROOM - MVNETA_PKT_EFFEC_OFFS;
>   
> -	if (frame_size < max_rx_pkt_len) {
> +	if (frame_size < max_rx_pktlen) {
>   		MVNETA_LOG(ERR,
>   			"Mbuf size must be increased to %u bytes to hold up "
>   			"to %u bytes of data.",
> -			buf_size + max_rx_pkt_len - frame_size,
> -			max_rx_pkt_len);
> -		dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -		MVNETA_LOG(INFO, "Setting max rx pkt len to %u",
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +			max_rx_pktlen + buf_size - frame_size,
> +			max_rx_pktlen);
> +		dev->data->mtu = frame_size - RTE_ETHER_HDR_LEN;
> +		MVNETA_LOG(INFO, "Setting MTU to %u", dev->data->mtu);
>   	}
>   
>   	if (dev->data->rx_queues[idx]) {
> diff --git a/drivers/net/mvpp2/mrvl_ethdev.c b/drivers/net/mvpp2/mrvl_ethdev.c
> index 078aefbb8da4..5ce71661c84e 100644
> --- a/drivers/net/mvpp2/mrvl_ethdev.c
> +++ b/drivers/net/mvpp2/mrvl_ethdev.c
> @@ -496,16 +496,11 @@ mrvl_dev_configure(struct rte_eth_dev *dev)
>   		return -EINVAL;
>   	}
>   
> -	if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		dev->data->mtu = dev->data->dev_conf.rxmode.max_rx_pkt_len -
> -				 MRVL_PP2_ETH_HDRS_LEN;
> -		if (dev->data->mtu > priv->max_mtu) {
> -			MRVL_LOG(ERR, "inherit MTU %u from max_rx_pkt_len %u is larger than max_mtu %u\n",
> -				 dev->data->mtu,
> -				 dev->data->dev_conf.rxmode.max_rx_pkt_len,
> -				 priv->max_mtu);
> -			return -EINVAL;
> -		}
> +	if (dev->data->dev_conf.rxmode.mtu > priv->max_mtu) {
> +		MRVL_LOG(ERR, "MTU %u is larger than max_mtu %u\n",
> +			 dev->data->dev_conf.rxmode.mtu,
> +			 priv->max_mtu);
> +		return -EINVAL;
>   	}
>   
>   	if (dev->data->dev_conf.txmode.offloads & DEV_TX_OFFLOAD_MULTI_SEGS)
> @@ -595,9 +590,6 @@ mrvl_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   		return -EINVAL;
>   	}
>   
> -	dev->data->mtu = mtu;
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = mru - MV_MH_SIZE;
> -
>   	if (!priv->ppio)
>   		return 0;
>   
> @@ -1994,7 +1986,7 @@ mrvl_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   	struct mrvl_priv *priv = dev->data->dev_private;
>   	struct mrvl_rxq *rxq;
>   	uint32_t frame_size, buf_size = rte_pktmbuf_data_room_size(mp);
> -	uint32_t max_rx_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +	uint32_t max_rx_pktlen = dev->data->mtu + RTE_ETHER_HDR_LEN;
>   	int ret, tc, inq;
>   	uint64_t offloads;
>   
> @@ -2009,17 +2001,15 @@ mrvl_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
>   		return -EFAULT;
>   	}
>   
> -	frame_size = buf_size - RTE_PKTMBUF_HEADROOM -
> -		     MRVL_PKT_EFFEC_OFFS + RTE_ETHER_CRC_LEN;
> -	if (frame_size < max_rx_pkt_len) {
> +	frame_size = buf_size - RTE_PKTMBUF_HEADROOM - MRVL_PKT_EFFEC_OFFS;
> +	if (frame_size < max_rx_pktlen) {
>   		MRVL_LOG(WARNING,
>   			"Mbuf size must be increased to %u bytes to hold up "
>   			"to %u bytes of data.",
> -			buf_size + max_rx_pkt_len - frame_size,
> -			max_rx_pkt_len);
> -		dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -		MRVL_LOG(INFO, "Setting max rx pkt len to %u",
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +			max_rx_pktlen + buf_size - frame_size,
> +			max_rx_pktlen);
> +		dev->data->mtu = frame_size - RTE_ETHER_HDR_LEN;
> +		MRVL_LOG(INFO, "Setting MTU to %u", dev->data->mtu);
>   	}
>   
>   	if (dev->data->rx_queues[idx]) {
> diff --git a/drivers/net/nfp/nfp_common.c b/drivers/net/nfp/nfp_common.c
> index 1b4bc33593fb..a2031a7a82cc 100644
> --- a/drivers/net/nfp/nfp_common.c
> +++ b/drivers/net/nfp/nfp_common.c
> @@ -370,7 +370,7 @@ nfp_check_offloads(struct rte_eth_dev *dev)
>   	}
>   
>   	if (rxmode->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
> -		hw->mtu = rxmode->max_rx_pkt_len;
> +		hw->mtu = dev->data->mtu;
>   
>   	if (txmode->offloads & DEV_TX_OFFLOAD_VLAN_INSERT)
>   		ctrl |= NFP_NET_CFG_CTRL_TXVLAN;
> @@ -963,16 +963,13 @@ nfp_net_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	}
>   
>   	/* switch to jumbo mode if needed */
> -	if ((uint32_t)mtu > RTE_ETHER_MTU)
> +	if (mtu > RTE_ETHER_MTU)
>   		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		dev->data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = (uint32_t)mtu;
> -
>   	/* writing to configuration space */
> -	nn_cfg_writel(hw, NFP_NET_CFG_MTU, (uint32_t)mtu);
> +	nn_cfg_writel(hw, NFP_NET_CFG_MTU, mtu);
>   
>   	hw->mtu = mtu;
>   
> diff --git a/drivers/net/octeontx/octeontx_ethdev.c b/drivers/net/octeontx/octeontx_ethdev.c
> index 9f4c0503b4d4..69c3bda12df8 100644
> --- a/drivers/net/octeontx/octeontx_ethdev.c
> +++ b/drivers/net/octeontx/octeontx_ethdev.c
> @@ -552,13 +552,11 @@ octeontx_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
>   	if (rc)
>   		return rc;
>   
> -	if (frame_size > OCCTX_L2_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		nic->rx_offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		nic->rx_offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
> -	/* Update max_rx_pkt_len */
> -	data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
>   	octeontx_log_info("Received pkt beyond  maxlen %d will be dropped",
>   			  frame_size);
>   
> @@ -581,7 +579,7 @@ octeontx_recheck_rx_offloads(struct octeontx_rxq *rxq)
>   	buffsz = mbp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM;
>   
>   	/* Setup scatter mode if needed by jumbo */
> -	if (data->dev_conf.rxmode.max_rx_pkt_len > buffsz) {
> +	if (data->mtu > buffsz) {
>   		nic->rx_offloads |= DEV_RX_OFFLOAD_SCATTER;
>   		nic->rx_offload_flags |= octeontx_rx_offload_flags(eth_dev);
>   		nic->tx_offload_flags |= octeontx_tx_offload_flags(eth_dev);
> @@ -593,8 +591,8 @@ octeontx_recheck_rx_offloads(struct octeontx_rxq *rxq)
>   	evdev_priv->rx_offload_flags = nic->rx_offload_flags;
>   	evdev_priv->tx_offload_flags = nic->tx_offload_flags;
>   
> -	/* Setup MTU based on max_rx_pkt_len */
> -	nic->mtu = data->dev_conf.rxmode.max_rx_pkt_len - OCCTX_L2_OVERHEAD;
> +	/* Setup MTU */
> +	nic->mtu = data->mtu;
>   
>   	return 0;
>   }
> @@ -615,7 +613,7 @@ octeontx_dev_start(struct rte_eth_dev *dev)
>   		octeontx_recheck_rx_offloads(rxq);
>   	}
>   
> -	/* Setting up the mtu based on max_rx_pkt_len */
> +	/* Setting up the mtu */
>   	ret = octeontx_dev_mtu_set(dev, nic->mtu);
>   	if (ret) {
>   		octeontx_log_err("Failed to set default MTU size %d", ret);
> diff --git a/drivers/net/octeontx2/otx2_ethdev.c b/drivers/net/octeontx2/otx2_ethdev.c
> index 75d4cabf2e7c..787e8d890215 100644
> --- a/drivers/net/octeontx2/otx2_ethdev.c
> +++ b/drivers/net/octeontx2/otx2_ethdev.c
> @@ -912,7 +912,7 @@ otx2_nix_enable_mseg_on_jumbo(struct otx2_eth_rxq *rxq)
>   	mbp_priv = rte_mempool_get_priv(rxq->pool);
>   	buffsz = mbp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM;
>   
> -	if (eth_dev->data->dev_conf.rxmode.max_rx_pkt_len > buffsz) {
> +	if (eth_dev->data->mtu + (uint32_t)NIX_L2_OVERHEAD > buffsz) {
>   		dev->rx_offloads |= DEV_RX_OFFLOAD_SCATTER;
>   		dev->tx_offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
>   
> diff --git a/drivers/net/octeontx2/otx2_ethdev_ops.c b/drivers/net/octeontx2/otx2_ethdev_ops.c
> index 552e6bd43d2b..cf7804157198 100644
> --- a/drivers/net/octeontx2/otx2_ethdev_ops.c
> +++ b/drivers/net/octeontx2/otx2_ethdev_ops.c
> @@ -59,14 +59,11 @@ otx2_nix_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
>   	if (rc)
>   		return rc;
>   
> -	if (frame_size > NIX_L2_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		dev->rx_offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		dev->rx_offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
> -	/* Update max_rx_pkt_len */
> -	data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> -
>   	return rc;
>   }
>   
> @@ -75,7 +72,6 @@ otx2_nix_recalc_mtu(struct rte_eth_dev *eth_dev)
>   {
>   	struct rte_eth_dev_data *data = eth_dev->data;
>   	struct otx2_eth_rxq *rxq;
> -	uint16_t mtu;
>   	int rc;
>   
>   	rxq = data->rx_queues[0];
> @@ -83,10 +79,7 @@ otx2_nix_recalc_mtu(struct rte_eth_dev *eth_dev)
>   	/* Setup scatter mode if needed by jumbo */
>   	otx2_nix_enable_mseg_on_jumbo(rxq);
>   
> -	/* Setup MTU based on max_rx_pkt_len */
> -	mtu = data->dev_conf.rxmode.max_rx_pkt_len - NIX_L2_OVERHEAD;
> -
> -	rc = otx2_nix_mtu_set(eth_dev, mtu);
> +	rc = otx2_nix_mtu_set(eth_dev, data->mtu);
>   	if (rc)
>   		otx2_err("Failed to set default MTU size %d", rc);
>   
> diff --git a/drivers/net/pfe/pfe_ethdev.c b/drivers/net/pfe/pfe_ethdev.c
> index feec4d10a26e..2619bd2f2a19 100644
> --- a/drivers/net/pfe/pfe_ethdev.c
> +++ b/drivers/net/pfe/pfe_ethdev.c
> @@ -682,16 +682,11 @@ pfe_link_up(struct rte_eth_dev *dev)
>   static int
>   pfe_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   {
> -	int ret;
>   	struct pfe_eth_priv_s *priv = dev->data->dev_private;
>   	uint16_t frame_size = mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
>   
>   	/*TODO Support VLAN*/
> -	ret = gemac_set_rx(priv->EMAC_baseaddr, frame_size);
> -	if (!ret)
> -		dev->data->mtu = mtu;
> -
> -	return ret;
> +	return gemac_set_rx(priv->EMAC_baseaddr, frame_size);
>   }
>   
>   /* pfe_eth_enet_addr_byte_mac
> diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
> index a4304e0eff44..4b971fd1fe3c 100644
> --- a/drivers/net/qede/qede_ethdev.c
> +++ b/drivers/net/qede/qede_ethdev.c
> @@ -1312,12 +1312,6 @@ static int qede_dev_configure(struct rte_eth_dev *eth_dev)
>   			return -ENOMEM;
>   	}
>   
> -	/* If jumbo enabled adjust MTU */
> -	if (rxmode->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
> -		eth_dev->data->mtu =
> -			eth_dev->data->dev_conf.rxmode.max_rx_pkt_len -
> -			RTE_ETHER_HDR_LEN - QEDE_ETH_OVERHEAD;
> -
>   	if (rxmode->offloads & DEV_RX_OFFLOAD_SCATTER)
>   		eth_dev->data->scattered_rx = 1;
>   
> @@ -2315,7 +2309,6 @@ static int qede_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   	struct ecore_dev *edev = QEDE_INIT_EDEV(qdev);
>   	struct rte_eth_dev_info dev_info = {0};
>   	struct qede_fastpath *fp;
> -	uint32_t max_rx_pkt_len;
>   	uint32_t frame_size;
>   	uint16_t bufsz;
>   	bool restart = false;
> @@ -2327,8 +2320,8 @@ static int qede_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   		DP_ERR(edev, "Error during getting ethernet device info\n");
>   		return rc;
>   	}
> -	max_rx_pkt_len = mtu + QEDE_MAX_ETHER_HDR_LEN;
> -	frame_size = max_rx_pkt_len;
> +
> +	frame_size = mtu + QEDE_MAX_ETHER_HDR_LEN;
>   	if (mtu < RTE_ETHER_MIN_MTU || frame_size > dev_info.max_rx_pktlen) {
>   		DP_ERR(edev, "MTU %u out of range, %u is maximum allowable\n",
>   		       mtu, dev_info.max_rx_pktlen - RTE_ETHER_HDR_LEN -
> @@ -2368,7 +2361,7 @@ static int qede_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   			fp->rxq->rx_buf_size = rc;
>   		}
>   	}
> -	if (frame_size > QEDE_ETH_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		dev->data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
> @@ -2378,9 +2371,6 @@ static int qede_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   		dev->data->dev_started = 1;
>   	}
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = max_rx_pkt_len;
> -
>   	return 0;
>   }
>   
> diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c
> index 35cde561ba59..c2263787b4ec 100644
> --- a/drivers/net/qede/qede_rxtx.c
> +++ b/drivers/net/qede/qede_rxtx.c
> @@ -224,7 +224,7 @@ qede_rx_queue_setup(struct rte_eth_dev *dev, uint16_t qid,
>   	struct ecore_dev *edev = QEDE_INIT_EDEV(qdev);
>   	struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
>   	struct qede_rx_queue *rxq;
> -	uint16_t max_rx_pkt_len;
> +	uint16_t max_rx_pktlen;
>   	uint16_t bufsz;
>   	int rc;
>   
> @@ -243,21 +243,21 @@ qede_rx_queue_setup(struct rte_eth_dev *dev, uint16_t qid,
>   		dev->data->rx_queues[qid] = NULL;
>   	}
>   
> -	max_rx_pkt_len = (uint16_t)rxmode->max_rx_pkt_len;
> +	max_rx_pktlen = dev->data->mtu + RTE_ETHER_HDR_LEN;
>   
>   	/* Fix up RX buffer size */
>   	bufsz = (uint16_t)rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM;
>   	/* cache align the mbuf size to simplfy rx_buf_size calculation */
>   	bufsz = QEDE_FLOOR_TO_CACHE_LINE_SIZE(bufsz);
>   	if ((rxmode->offloads & DEV_RX_OFFLOAD_SCATTER)	||
> -	    (max_rx_pkt_len + QEDE_ETH_OVERHEAD) > bufsz) {
> +	    (max_rx_pktlen + QEDE_ETH_OVERHEAD) > bufsz) {
>   		if (!dev->data->scattered_rx) {
>   			DP_INFO(edev, "Forcing scatter-gather mode\n");
>   			dev->data->scattered_rx = 1;
>   		}
>   	}
>   
> -	rc = qede_calc_rx_buf_size(dev, bufsz, max_rx_pkt_len);
> +	rc = qede_calc_rx_buf_size(dev, bufsz, max_rx_pktlen);
>   	if (rc < 0)
>   		return rc;
>   
> diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
> index 2db0d000c3ad..1f55c90b419d 100644
> --- a/drivers/net/sfc/sfc_ethdev.c
> +++ b/drivers/net/sfc/sfc_ethdev.c
> @@ -1066,15 +1066,13 @@ sfc_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   
>   	/*
>   	 * The driver does not use it, but other PMDs update jumbo frame
> -	 * flag and max_rx_pkt_len when MTU is set.
> +	 * flag when MTU is set.
>   	 */
>   	if (mtu > RTE_ETHER_MTU) {
>   		struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
>   		rxmode->offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	}
>   
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = sa->port.pdu;
> -
>   	sfc_adapter_unlock(sa);
>   
>   	sfc_log_init(sa, "done");
> diff --git a/drivers/net/sfc/sfc_port.c b/drivers/net/sfc/sfc_port.c
> index adb2b2cb8175..22f74735db08 100644
> --- a/drivers/net/sfc/sfc_port.c
> +++ b/drivers/net/sfc/sfc_port.c
> @@ -383,14 +383,10 @@ sfc_port_configure(struct sfc_adapter *sa)
>   {
>   	const struct rte_eth_dev_data *dev_data = sa->eth_dev->data;
>   	struct sfc_port *port = &sa->port;
> -	const struct rte_eth_rxmode *rxmode = &dev_data->dev_conf.rxmode;
>   
>   	sfc_log_init(sa, "entry");
>   
> -	if (rxmode->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
> -		port->pdu = rxmode->max_rx_pkt_len;
> -	else
> -		port->pdu = EFX_MAC_PDU(dev_data->mtu);
> +	port->pdu = EFX_MAC_PDU(dev_data->mtu);
>   
>   	return 0;
>   }
> diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
> index c515de3bf71d..0a8d29277aeb 100644
> --- a/drivers/net/tap/rte_eth_tap.c
> +++ b/drivers/net/tap/rte_eth_tap.c
> @@ -1627,13 +1627,8 @@ tap_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   {
>   	struct pmd_internals *pmd = dev->data->dev_private;
>   	struct ifreq ifr = { .ifr_mtu = mtu };
> -	int err = 0;
>   
> -	err = tap_ioctl(pmd, SIOCSIFMTU, &ifr, 1, LOCAL_AND_REMOTE);
> -	if (!err)
> -		dev->data->mtu = mtu;
> -
> -	return err;
> +	return tap_ioctl(pmd, SIOCSIFMTU, &ifr, 1, LOCAL_AND_REMOTE);
>   }
>   
>   static int
> diff --git a/drivers/net/thunderx/nicvf_ethdev.c b/drivers/net/thunderx/nicvf_ethdev.c
> index 561a98fc81a3..c8ae95a61306 100644
> --- a/drivers/net/thunderx/nicvf_ethdev.c
> +++ b/drivers/net/thunderx/nicvf_ethdev.c
> @@ -176,7 +176,7 @@ nicvf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   		(frame_size + 2 * VLAN_TAG_SIZE > buffsz * NIC_HW_MAX_SEGS))
>   		return -EINVAL;
>   
> -	if (frame_size > NIC_HW_L2_MAX_LEN)
> +	if (mtu > RTE_ETHER_MTU)
>   		rxmode->offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		rxmode->offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
> @@ -184,8 +184,6 @@ nicvf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   	if (nicvf_mbox_update_hw_max_frs(nic, mtu))
>   		return -EINVAL;
>   
> -	/* Update max_rx_pkt_len */
> -	rxmode->max_rx_pkt_len = mtu + RTE_ETHER_HDR_LEN;
>   	nic->mtu = mtu;
>   
>   	for (i = 0; i < nic->sqs_count; i++)
> @@ -1724,16 +1722,13 @@ nicvf_dev_start(struct rte_eth_dev *dev)
>   	}
>   
>   	/* Setup scatter mode if needed by jumbo */
> -	if (dev->data->dev_conf.rxmode.max_rx_pkt_len +
> -					    2 * VLAN_TAG_SIZE > buffsz)
> +	if (dev->data->mtu + (uint32_t)NIC_HW_L2_OVERHEAD + 2 * VLAN_TAG_SIZE > buffsz)
>   		dev->data->scattered_rx = 1;
>   	if ((rx_conf->offloads & DEV_RX_OFFLOAD_SCATTER) != 0)
>   		dev->data->scattered_rx = 1;
>   
> -	/* Setup MTU based on max_rx_pkt_len or default */
> -	mtu = dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME ?
> -		dev->data->dev_conf.rxmode.max_rx_pkt_len
> -			-  RTE_ETHER_HDR_LEN : RTE_ETHER_MTU;
> +	/* Setup MTU */
> +	mtu = dev->data->mtu;
>   
>   	if (nicvf_dev_set_mtu(dev, mtu)) {
>   		PMD_INIT_LOG(ERR, "Failed to set default mtu size");
> diff --git a/drivers/net/txgbe/txgbe_ethdev.c b/drivers/net/txgbe/txgbe_ethdev.c
> index 006399468841..269de9f848dd 100644
> --- a/drivers/net/txgbe/txgbe_ethdev.c
> +++ b/drivers/net/txgbe/txgbe_ethdev.c
> @@ -3486,8 +3486,11 @@ txgbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   		return -EINVAL;
>   	}
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
> +	/* switch to jumbo mode if needed */
> +	if (mtu > RTE_ETHER_MTU)
> +		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> +	else
> +		dev->data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
>   	if (hw->mode)
>   		wr32m(hw, TXGBE_FRMSZ, TXGBE_FRMSZ_MAX_MASK,
> diff --git a/drivers/net/txgbe/txgbe_ethdev.h b/drivers/net/txgbe/txgbe_ethdev.h
> index 3021933965c8..44cfcd76bca4 100644
> --- a/drivers/net/txgbe/txgbe_ethdev.h
> +++ b/drivers/net/txgbe/txgbe_ethdev.h
> @@ -55,6 +55,10 @@
>   #define TXGBE_5TUPLE_MAX_PRI            7
>   #define TXGBE_5TUPLE_MIN_PRI            1
>   
> +
> +/* The overhead from MTU to max frame size. */
> +#define TXGBE_ETH_OVERHEAD (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN)
> +
>   #define TXGBE_RSS_OFFLOAD_ALL ( \
>   	ETH_RSS_IPV4 | \
>   	ETH_RSS_NONFRAG_IPV4_TCP | \
> diff --git a/drivers/net/txgbe/txgbe_ethdev_vf.c b/drivers/net/txgbe/txgbe_ethdev_vf.c
> index 896da8a88770..43dc0ed39b75 100644
> --- a/drivers/net/txgbe/txgbe_ethdev_vf.c
> +++ b/drivers/net/txgbe/txgbe_ethdev_vf.c
> @@ -1128,8 +1128,6 @@ txgbevf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
>   	if (txgbevf_rlpml_set_vf(hw, max_frame))
>   		return -EINVAL;
>   
> -	/* update max frame size */
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = max_frame;
>   	return 0;
>   }
>   
> diff --git a/drivers/net/txgbe/txgbe_rxtx.c b/drivers/net/txgbe/txgbe_rxtx.c
> index 1a261287d1bd..c6cd3803c434 100644
> --- a/drivers/net/txgbe/txgbe_rxtx.c
> +++ b/drivers/net/txgbe/txgbe_rxtx.c
> @@ -4305,13 +4305,8 @@ txgbe_dev_rx_init(struct rte_eth_dev *dev)
>   	/*
>   	 * Configure jumbo frame support, if any.
>   	 */
> -	if (rx_conf->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		wr32m(hw, TXGBE_FRMSZ, TXGBE_FRMSZ_MAX_MASK,
> -			TXGBE_FRMSZ_MAX(rx_conf->max_rx_pkt_len));
> -	} else {
> -		wr32m(hw, TXGBE_FRMSZ, TXGBE_FRMSZ_MAX_MASK,
> -			TXGBE_FRMSZ_MAX(TXGBE_FRAME_SIZE_DFT));
> -	}
> +	wr32m(hw, TXGBE_FRMSZ, TXGBE_FRMSZ_MAX_MASK,
> +		TXGBE_FRMSZ_MAX(dev->data->mtu + TXGBE_ETH_OVERHEAD));
>   
>   	/*
>   	 * If loopback mode is configured, set LPBK bit.
> @@ -4373,8 +4368,8 @@ txgbe_dev_rx_init(struct rte_eth_dev *dev)
>   		wr32(hw, TXGBE_RXCFG(rxq->reg_idx), srrctl);
>   
>   		/* It adds dual VLAN length for supporting dual VLAN */
> -		if (dev->data->dev_conf.rxmode.max_rx_pkt_len +
> -					    2 * TXGBE_VLAN_TAG_SIZE > buf_size)
> +		if (dev->data->mtu + TXGBE_ETH_OVERHEAD +
> +				2 * TXGBE_VLAN_TAG_SIZE > buf_size)
>   			dev->data->scattered_rx = 1;
>   		if (rxq->offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
>   			rx_conf->offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
> @@ -4826,9 +4821,9 @@ txgbevf_dev_rx_init(struct rte_eth_dev *dev)
>   	 * VF packets received can work in all cases.
>   	 */
>   	if (txgbevf_rlpml_set_vf(hw,
> -	    (uint16_t)dev->data->dev_conf.rxmode.max_rx_pkt_len)) {
> +	    (uint16_t)dev->data->mtu + TXGBE_ETH_OVERHEAD)) {
>   		PMD_INIT_LOG(ERR, "Set max packet length to %d failed.",
> -			     dev->data->dev_conf.rxmode.max_rx_pkt_len);
> +			     dev->data->mtu + TXGBE_ETH_OVERHEAD);
>   		return -EINVAL;
>   	}
>   
> @@ -4890,7 +4885,7 @@ txgbevf_dev_rx_init(struct rte_eth_dev *dev)
>   
>   		if (rxmode->offloads & DEV_RX_OFFLOAD_SCATTER ||
>   		    /* It adds dual VLAN length for supporting dual VLAN */
> -		    (rxmode->max_rx_pkt_len +
> +		    (dev->data->mtu + TXGBE_ETH_OVERHEAD +
>   				2 * TXGBE_VLAN_TAG_SIZE) > buf_size) {
>   			if (!dev->data->scattered_rx)
>   				PMD_INIT_LOG(DEBUG, "forcing scatter mode");
> diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
> index b60eeb24abe7..5d341a3e23bb 100644
> --- a/drivers/net/virtio/virtio_ethdev.c
> +++ b/drivers/net/virtio/virtio_ethdev.c
> @@ -930,7 +930,6 @@ virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>   	}
>   
>   	hw->max_rx_pkt_len = frame_size;
> -	dev->data->dev_conf.rxmode.max_rx_pkt_len = hw->max_rx_pkt_len;
>   
>   	return 0;
>   }
> @@ -2116,14 +2115,10 @@ virtio_dev_configure(struct rte_eth_dev *dev)
>   			return ret;
>   	}
>   
> -	if ((rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) &&
> -	    (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len))
> +	if (rxmode->mtu > hw->max_mtu)
>   		req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
>   
> -	if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
> -		hw->max_rx_pkt_len = rxmode->max_rx_pkt_len;
> -	else
> -		hw->max_rx_pkt_len = ether_hdr_len + dev->data->mtu;
> +	hw->max_rx_pkt_len = ether_hdr_len + rxmode->mtu;
>   
>   	if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
>   			   DEV_RX_OFFLOAD_TCP_CKSUM))
> diff --git a/examples/bbdev_app/main.c b/examples/bbdev_app/main.c
> index adbd40808396..68e3c13730ad 100644
> --- a/examples/bbdev_app/main.c
> +++ b/examples/bbdev_app/main.c
> @@ -72,7 +72,6 @@ mbuf_input(struct rte_mbuf *mbuf)
>   static const struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_NONE,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   	},
>   	.txmode = {
> diff --git a/examples/bond/main.c b/examples/bond/main.c
> index a63ca70a7f06..25ca459be57b 100644
> --- a/examples/bond/main.c
> +++ b/examples/bond/main.c
> @@ -116,7 +116,6 @@ static struct rte_mempool *mbuf_pool;
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_NONE,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   	},
>   	.rx_adv_conf = {
> diff --git a/examples/distributor/main.c b/examples/distributor/main.c
> index d0f40a1fb4bc..8c4a8feec0c2 100644
> --- a/examples/distributor/main.c
> +++ b/examples/distributor/main.c
> @@ -81,7 +81,6 @@ struct app_stats prev_app_stats;
>   static const struct rte_eth_conf port_conf_default = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   	},
>   	.txmode = {
>   		.mq_mode = ETH_MQ_TX_NONE,
> diff --git a/examples/eventdev_pipeline/pipeline_worker_generic.c b/examples/eventdev_pipeline/pipeline_worker_generic.c
> index 5ed0dc73ec60..e26be8edf28f 100644
> --- a/examples/eventdev_pipeline/pipeline_worker_generic.c
> +++ b/examples/eventdev_pipeline/pipeline_worker_generic.c
> @@ -284,7 +284,6 @@ port_init(uint8_t port, struct rte_mempool *mbuf_pool)
>   	static const struct rte_eth_conf port_conf_default = {
>   		.rxmode = {
>   			.mq_mode = ETH_MQ_RX_RSS,
> -			.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		},
>   		.rx_adv_conf = {
>   			.rss_conf = {
> diff --git a/examples/eventdev_pipeline/pipeline_worker_tx.c b/examples/eventdev_pipeline/pipeline_worker_tx.c
> index ab8c6d6a0dad..476b147bdfcc 100644
> --- a/examples/eventdev_pipeline/pipeline_worker_tx.c
> +++ b/examples/eventdev_pipeline/pipeline_worker_tx.c
> @@ -615,7 +615,6 @@ port_init(uint8_t port, struct rte_mempool *mbuf_pool)
>   	static const struct rte_eth_conf port_conf_default = {
>   		.rxmode = {
>   			.mq_mode = ETH_MQ_RX_RSS,
> -			.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		},
>   		.rx_adv_conf = {
>   			.rss_conf = {
> diff --git a/examples/flow_classify/flow_classify.c b/examples/flow_classify/flow_classify.c
> index 65c1d85cf2fb..8a43f6ac0f92 100644
> --- a/examples/flow_classify/flow_classify.c
> +++ b/examples/flow_classify/flow_classify.c
> @@ -59,14 +59,6 @@ static struct{
>   } parm_config;
>   const char cb_port_delim[] = ":";
>   
> -/* Ethernet ports configured with default settings using struct. 8< */
> -static const struct rte_eth_conf port_conf_default = {
> -	.rxmode = {
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
> -	},
> -};
> -/* >8 End of configuration of Ethernet ports. */
> -
>   /* Creation of flow classifier object. 8< */
>   struct flow_classifier {
>   	struct rte_flow_classifier *cls;
> @@ -200,7 +192,7 @@ static struct rte_flow_attr attr;
>   static inline int
>   port_init(uint8_t port, struct rte_mempool *mbuf_pool)
>   {
> -	struct rte_eth_conf port_conf = port_conf_default;
> +	struct rte_eth_conf port_conf;
>   	struct rte_ether_addr addr;
>   	const uint16_t rx_rings = 1, tx_rings = 1;
>   	int retval;
> @@ -211,6 +203,8 @@ port_init(uint8_t port, struct rte_mempool *mbuf_pool)
>   	if (!rte_eth_dev_is_valid_port(port))
>   		return -1;
>   
> +	memset(&port_conf, 0, sizeof(struct rte_eth_conf));
> +
>   	retval = rte_eth_dev_info_get(port, &dev_info);
>   	if (retval != 0) {
>   		printf("Error during getting device (port %u) info: %s\n",
> diff --git a/examples/ioat/ioatfwd.c b/examples/ioat/ioatfwd.c
> index b3977a8be561..fdc66368dce9 100644
> --- a/examples/ioat/ioatfwd.c
> +++ b/examples/ioat/ioatfwd.c
> @@ -820,7 +820,6 @@ port_init(uint16_t portid, struct rte_mempool *mbuf_pool, uint16_t nb_queues)
>   	static const struct rte_eth_conf port_conf = {
>   		.rxmode = {
>   			.mq_mode = ETH_MQ_RX_RSS,
> -			.max_rx_pkt_len = RTE_ETHER_MAX_LEN
>   		},
>   		.rx_adv_conf = {
>   			.rss_conf = {
> diff --git a/examples/ip_fragmentation/main.c b/examples/ip_fragmentation/main.c
> index f24536972084..12062a785dc6 100644
> --- a/examples/ip_fragmentation/main.c
> +++ b/examples/ip_fragmentation/main.c
> @@ -146,7 +146,8 @@ struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
>   
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
> -		.max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
> +		.mtu = JUMBO_FRAME_MAX_SIZE - RTE_ETHER_HDR_LEN -
> +			RTE_ETHER_CRC_LEN,
>   		.split_hdr_size = 0,
>   		.offloads = (DEV_RX_OFFLOAD_CHECKSUM |
>   			     DEV_RX_OFFLOAD_SCATTER |
> @@ -918,9 +919,9 @@ main(int argc, char **argv)
>   				"Error during getting device (port %u) info: %s\n",
>   				portid, strerror(-ret));
>   
> -		local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
> -		    dev_info.max_rx_pktlen,
> -		    local_port_conf.rxmode.max_rx_pkt_len);
> +		local_port_conf.rxmode.mtu = RTE_MIN(
> +		    dev_info.max_mtu,
> +		    local_port_conf.rxmode.mtu);
>   
>   		/* get the lcore_id for this port */
>   		while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
> @@ -963,8 +964,7 @@ main(int argc, char **argv)
>   		}
>   
>   		/* set the mtu to the maximum received packet size */
> -		ret = rte_eth_dev_set_mtu(portid,
> -			local_port_conf.rxmode.max_rx_pkt_len - MTU_OVERHEAD);
> +		ret = rte_eth_dev_set_mtu(portid, local_port_conf.rxmode.mtu);
>   		if (ret < 0) {
>   			printf("\n");
>   			rte_exit(EXIT_FAILURE, "Set MTU failed: "
> diff --git a/examples/ip_pipeline/link.c b/examples/ip_pipeline/link.c
> index 16bcffe356bc..9ba02e687adb 100644
> --- a/examples/ip_pipeline/link.c
> +++ b/examples/ip_pipeline/link.c
> @@ -46,7 +46,7 @@ static struct rte_eth_conf port_conf_default = {
>   	.link_speeds = 0,
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_NONE,
> -		.max_rx_pkt_len = 9000, /* Jumbo frame max packet len */
> +		.mtu = 9000 - (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN), /* Jumbo frame MTU */
>   		.split_hdr_size = 0, /* Header split buffer size */
>   	},
>   	.rx_adv_conf = {
> diff --git a/examples/ip_reassembly/main.c b/examples/ip_reassembly/main.c
> index 8645ac790be4..e5c7d46d2caa 100644
> --- a/examples/ip_reassembly/main.c
> +++ b/examples/ip_reassembly/main.c
> @@ -162,7 +162,8 @@ static struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode        = ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
> +		.mtu = JUMBO_FRAME_MAX_SIZE - RTE_ETHER_HDR_LEN -
> +			RTE_ETHER_CRC_LEN,
>   		.split_hdr_size = 0,
>   		.offloads = (DEV_RX_OFFLOAD_CHECKSUM |
>   			     DEV_RX_OFFLOAD_JUMBO_FRAME),
> @@ -882,7 +883,8 @@ setup_queue_tbl(struct rx_queue *rxq, uint32_t lcore, uint32_t queue)
>   
>   	/* mbufs stored int the gragment table. 8< */
>   	nb_mbuf = RTE_MAX(max_flow_num, 2UL * MAX_PKT_BURST) * MAX_FRAG_NUM;
> -	nb_mbuf *= (port_conf.rxmode.max_rx_pkt_len + BUF_SIZE - 1) / BUF_SIZE;
> +	nb_mbuf *= (port_conf.rxmode.mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN
> +			+ BUF_SIZE - 1) / BUF_SIZE;
>   	nb_mbuf *= 2; /* ipv4 and ipv6 */
>   	nb_mbuf += nb_rxd + nb_txd;
>   
> @@ -1054,9 +1056,9 @@ main(int argc, char **argv)
>   				"Error during getting device (port %u) info: %s\n",
>   				portid, strerror(-ret));
>   
> -		local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
> -		    dev_info.max_rx_pktlen,
> -		    local_port_conf.rxmode.max_rx_pkt_len);
> +		local_port_conf.rxmode.mtu = RTE_MIN(
> +		    dev_info.max_mtu,
> +		    local_port_conf.rxmode.mtu);
>   
>   		/* get the lcore_id for this port */
>   		while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
> diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
> index 7ad94cb8228b..d032a47d1c3b 100644
> --- a/examples/ipsec-secgw/ipsec-secgw.c
> +++ b/examples/ipsec-secgw/ipsec-secgw.c
> @@ -235,7 +235,6 @@ static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode	= ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   		.offloads = DEV_RX_OFFLOAD_CHECKSUM,
>   	},
> @@ -2163,7 +2162,6 @@ cryptodevs_init(uint16_t req_queue_num)
>   static void
>   port_init(uint16_t portid, uint64_t req_rx_offloads, uint64_t req_tx_offloads)
>   {
> -	uint32_t frame_size;
>   	struct rte_eth_dev_info dev_info;
>   	struct rte_eth_txconf *txconf;
>   	uint16_t nb_tx_queue, nb_rx_queue;
> @@ -2211,10 +2209,9 @@ port_init(uint16_t portid, uint64_t req_rx_offloads, uint64_t req_tx_offloads)
>   	printf("Creating queues: nb_rx_queue=%d nb_tx_queue=%u...\n",
>   			nb_rx_queue, nb_tx_queue);
>   
> -	frame_size = MTU_TO_FRAMELEN(mtu_size);
> -	if (frame_size > local_port_conf.rxmode.max_rx_pkt_len)
> +	if (mtu_size > RTE_ETHER_MTU)
>   		local_port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> -	local_port_conf.rxmode.max_rx_pkt_len = frame_size;
> +	local_port_conf.rxmode.mtu = mtu_size;
>   
>   	if (multi_seg_required()) {
>   		local_port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_SCATTER;
> diff --git a/examples/ipv4_multicast/main.c b/examples/ipv4_multicast/main.c
> index cc527d7f6b38..b3993685ec92 100644
> --- a/examples/ipv4_multicast/main.c
> +++ b/examples/ipv4_multicast/main.c
> @@ -110,7 +110,8 @@ static struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
>   
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
> -		.max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
> +		.mtu = JUMBO_FRAME_MAX_SIZE - RTE_ETHER_HDR_LEN -
> +			RTE_ETHER_CRC_LEN,
>   		.split_hdr_size = 0,
>   		.offloads = DEV_RX_OFFLOAD_JUMBO_FRAME,
>   	},
> @@ -715,9 +716,9 @@ main(int argc, char **argv)
>   				"Error during getting device (port %u) info: %s\n",
>   				portid, strerror(-ret));
>   
> -		local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
> -		    dev_info.max_rx_pktlen,
> -		    local_port_conf.rxmode.max_rx_pkt_len);
> +		local_port_conf.rxmode.mtu = RTE_MIN(
> +		    dev_info.max_mtu,
> +		    local_port_conf.rxmode.mtu);
>   
>   		/* get the lcore_id for this port */
>   		while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
> diff --git a/examples/kni/main.c b/examples/kni/main.c
> index 2a993a0ca460..62f6e42a9437 100644
> --- a/examples/kni/main.c
> +++ b/examples/kni/main.c
> @@ -791,14 +791,12 @@ kni_change_mtu_(uint16_t port_id, unsigned int new_mtu)
>   
>   	memcpy(&conf, &port_conf, sizeof(conf));
>   	/* Set new MTU */
> -	if (new_mtu > RTE_ETHER_MAX_LEN)
> +	if (new_mtu > RTE_ETHER_MTU)
>   		conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
>   	else
>   		conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
>   
> -	/* mtu + length of header + length of FCS = max pkt length */
> -	conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE +
> -							KNI_ENET_FCS_SIZE;
> +	conf.rxmode.mtu = new_mtu;
>   	ret = rte_eth_dev_configure(port_id, 1, 1, &conf);
>   	if (ret < 0) {
>   		RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id);
> diff --git a/examples/l2fwd-cat/l2fwd-cat.c b/examples/l2fwd-cat/l2fwd-cat.c
> index 9b3e324efb23..d9cf00c9dfc7 100644
> --- a/examples/l2fwd-cat/l2fwd-cat.c
> +++ b/examples/l2fwd-cat/l2fwd-cat.c
> @@ -19,10 +19,6 @@
>   #define MBUF_CACHE_SIZE 250
>   #define BURST_SIZE 32
>   
> -static const struct rte_eth_conf port_conf_default = {
> -	.rxmode = { .max_rx_pkt_len = RTE_ETHER_MAX_LEN }
> -};
> -
>   /* l2fwd-cat.c: CAT enabled, basic DPDK skeleton forwarding example. */
>   
>   /*
> @@ -32,7 +28,7 @@ static const struct rte_eth_conf port_conf_default = {
>   static inline int
>   port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   {
> -	struct rte_eth_conf port_conf = port_conf_default;
> +	struct rte_eth_conf port_conf;
>   	const uint16_t rx_rings = 1, tx_rings = 1;
>   	int retval;
>   	uint16_t q;
> @@ -42,6 +38,8 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   	if (!rte_eth_dev_is_valid_port(port))
>   		return -1;
>   
> +	memset(&port_conf, 0, sizeof(struct rte_eth_conf));
> +
>   	/* Configure the Ethernet device. */
>   	retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
>   	if (retval != 0)
> diff --git a/examples/l2fwd-crypto/main.c b/examples/l2fwd-crypto/main.c
> index 66d1491bf76d..f9438176cbb1 100644
> --- a/examples/l2fwd-crypto/main.c
> +++ b/examples/l2fwd-crypto/main.c
> @@ -217,7 +217,6 @@ struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_NONE,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   	},
>   	.txmode = {
> diff --git a/examples/l2fwd-event/l2fwd_common.c b/examples/l2fwd-event/l2fwd_common.c
> index 19f32809aa9d..9040be5ed9b6 100644
> --- a/examples/l2fwd-event/l2fwd_common.c
> +++ b/examples/l2fwd-event/l2fwd_common.c
> @@ -11,7 +11,6 @@ l2fwd_event_init_ports(struct l2fwd_resources *rsrc)
>   	uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
>   	struct rte_eth_conf port_conf = {
>   		.rxmode = {
> -			.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   			.split_hdr_size = 0,
>   		},
>   		.txmode = {
> diff --git a/examples/l3fwd-acl/main.c b/examples/l3fwd-acl/main.c
> index a1f457b564b6..7abb612ee6a4 100644
> --- a/examples/l3fwd-acl/main.c
> +++ b/examples/l3fwd-acl/main.c
> @@ -125,7 +125,6 @@ static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode	= ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   		.offloads = DEV_RX_OFFLOAD_CHECKSUM,
>   	},
> @@ -141,6 +140,8 @@ static struct rte_eth_conf port_conf = {
>   	},
>   };
>   
> +static uint16_t max_pkt_len;
> +
>   static struct rte_mempool *pktmbuf_pool[NB_SOCKETS];
>   
>   /* ethernet addresses of ports */
> @@ -201,8 +202,8 @@ enum {
>   	OPT_CONFIG_NUM = 256,
>   #define OPT_NONUMA      "no-numa"
>   	OPT_NONUMA_NUM,
> -#define OPT_ENBJMO      "enable-jumbo"
> -	OPT_ENBJMO_NUM,
> +#define OPT_MAX_PKT_LEN "max-pkt-len"
> +	OPT_MAX_PKT_LEN_NUM,
>   #define OPT_RULE_IPV4   "rule_ipv4"
>   	OPT_RULE_IPV4_NUM,
>   #define OPT_RULE_IPV6	"rule_ipv6"
> @@ -1619,26 +1620,21 @@ print_usage(const char *prgname)
>   
>   	usage_acl_alg(alg, sizeof(alg));
>   	printf("%s [EAL options] -- -p PORTMASK -P"
> -		"--"OPT_RULE_IPV4"=FILE"
> -		"--"OPT_RULE_IPV6"=FILE"
> +		"  --"OPT_RULE_IPV4"=FILE"
> +		"  --"OPT_RULE_IPV6"=FILE"
>   		"  [--"OPT_CONFIG" (port,queue,lcore)[,(port,queue,lcore]]"
> -		"  [--"OPT_ENBJMO" [--max-pkt-len PKTLEN]]\n"
> +		"  [--"OPT_MAX_PKT_LEN" PKTLEN]\n"
>   		"  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
> -		"  -P : enable promiscuous mode\n"
> -		"  --"OPT_CONFIG": (port,queue,lcore): "
> -		"rx queues configuration\n"
> +		"  -P: enable promiscuous mode\n"
> +		"  --"OPT_CONFIG" (port,queue,lcore): rx queues configuration\n"
>   		"  --"OPT_NONUMA": optional, disable numa awareness\n"
> -		"  --"OPT_ENBJMO": enable jumbo frame"
> -		" which max packet len is PKTLEN in decimal (64-9600)\n"
> -		"  --"OPT_RULE_IPV4"=FILE: specify the ipv4 rules entries "
> -		"file. "
> +		"  --"OPT_MAX_PKT_LEN" PKTLEN: maximum packet length in decimal (64-9600)\n"
> +		"  --"OPT_RULE_IPV4"=FILE: specify the ipv4 rules entries file. "
>   		"Each rule occupy one line. "
>   		"2 kinds of rules are supported. "
>   		"One is ACL entry at while line leads with character '%c', "
> -		"another is route entry at while line leads with "
> -		"character '%c'.\n"
> -		"  --"OPT_RULE_IPV6"=FILE: specify the ipv6 rules "
> -		"entries file.\n"
> +		"another is route entry at while line leads with character '%c'.\n"
> +		"  --"OPT_RULE_IPV6"=FILE: specify the ipv6 rules entries file.\n"
>   		"  --"OPT_ALG": ACL classify method to use, one of: %s\n",
>   		prgname, ACL_LEAD_CHAR, ROUTE_LEAD_CHAR, alg);
>   }
> @@ -1758,14 +1754,14 @@ parse_args(int argc, char **argv)
>   	int option_index;
>   	char *prgname = argv[0];
>   	static struct option lgopts[] = {
> -		{OPT_CONFIG,    1, NULL, OPT_CONFIG_NUM    },
> -		{OPT_NONUMA,    0, NULL, OPT_NONUMA_NUM    },
> -		{OPT_ENBJMO,    0, NULL, OPT_ENBJMO_NUM    },
> -		{OPT_RULE_IPV4, 1, NULL, OPT_RULE_IPV4_NUM },
> -		{OPT_RULE_IPV6, 1, NULL, OPT_RULE_IPV6_NUM },
> -		{OPT_ALG,       1, NULL, OPT_ALG_NUM       },
> -		{OPT_ETH_DEST,  1, NULL, OPT_ETH_DEST_NUM  },
> -		{NULL,          0, 0,    0                 }
> +		{OPT_CONFIG,      1, NULL, OPT_CONFIG_NUM      },
> +		{OPT_NONUMA,      0, NULL, OPT_NONUMA_NUM      },
> +		{OPT_MAX_PKT_LEN, 1, NULL, OPT_MAX_PKT_LEN_NUM },
> +		{OPT_RULE_IPV4,   1, NULL, OPT_RULE_IPV4_NUM   },
> +		{OPT_RULE_IPV6,   1, NULL, OPT_RULE_IPV6_NUM   },
> +		{OPT_ALG,         1, NULL, OPT_ALG_NUM         },
> +		{OPT_ETH_DEST,    1, NULL, OPT_ETH_DEST_NUM    },
> +		{NULL,            0, 0,    0                   }
>   	};
>   
>   	argvopt = argv;
> @@ -1804,43 +1800,11 @@ parse_args(int argc, char **argv)
>   			numa_on = 0;
>   			break;
>   
> -		case OPT_ENBJMO_NUM:
> -		{
> -			struct option lenopts = {
> -				"max-pkt-len",
> -				required_argument,
> -				0,
> -				0
> -			};
> -
> -			printf("jumbo frame is enabled\n");
> -			port_conf.rxmode.offloads |=
> -					DEV_RX_OFFLOAD_JUMBO_FRAME;
> -			port_conf.txmode.offloads |=
> -					DEV_TX_OFFLOAD_MULTI_SEGS;
> -
> -			/*
> -			 * if no max-pkt-len set, then use the
> -			 * default value RTE_ETHER_MAX_LEN
> -			 */
> -			if (getopt_long(argc, argvopt, "",
> -					&lenopts, &option_index) == 0) {
> -				ret = parse_max_pkt_len(optarg);
> -				if ((ret < 64) ||
> -					(ret > MAX_JUMBO_PKT_LEN)) {
> -					printf("invalid packet "
> -						"length\n");
> -					print_usage(prgname);
> -					return -1;
> -				}
> -				port_conf.rxmode.max_rx_pkt_len = ret;
> -			}
> -			printf("set jumbo frame max packet length "
> -				"to %u\n",
> -				(unsigned int)
> -				port_conf.rxmode.max_rx_pkt_len);
> +		case OPT_MAX_PKT_LEN_NUM:
> +			printf("Custom frame size is configured\n");
> +			max_pkt_len = parse_max_pkt_len(optarg);
>   			break;
> -		}
> +
>   		case OPT_RULE_IPV4_NUM:
>   			parm_config.rule_ipv4_name = optarg;
>   			break;
> @@ -2007,6 +1971,43 @@ set_default_dest_mac(void)
>   	}
>   }
>   
> +static uint16_t
> +eth_dev_get_overhead_len(uint32_t max_rx_pktlen, uint16_t max_mtu)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_mtu != UINT16_MAX && max_rx_pktlen > max_mtu)
> +		overhead_len = max_rx_pktlen - max_mtu;
> +	else
> +		overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +
> +	return overhead_len;
> +}
> +
> +static int
> +config_port_max_pkt_len(struct rte_eth_conf *conf,
> +		struct rte_eth_dev_info *dev_info)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_pkt_len == 0)
> +		return 0;
> +
> +	if (max_pkt_len < RTE_ETHER_MIN_LEN || max_pkt_len > MAX_JUMBO_PKT_LEN)
> +		return -1;
> +
> +	overhead_len = eth_dev_get_overhead_len(dev_info->max_rx_pktlen,
> +			dev_info->max_mtu);
> +	conf->rxmode.mtu = max_pkt_len - overhead_len;
> +
> +	if (conf->rxmode.mtu > RTE_ETHER_MTU) {
> +		conf->txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
> +		conf->rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> +	}
> +
> +	return 0;
> +}
> +
>   int
>   main(int argc, char **argv)
>   {
> @@ -2080,6 +2081,12 @@ main(int argc, char **argv)
>   				"Error during getting device (port %u) info: %s\n",
>   				portid, strerror(-ret));
>   
> +		ret = config_port_max_pkt_len(&local_port_conf, &dev_info);
> +		if (ret != 0)
> +			rte_exit(EXIT_FAILURE,
> +				"Invalid max packet length: %u (port %u)\n",
> +				max_pkt_len, portid);
> +
>   		if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
>   			local_port_conf.txmode.offloads |=
>   				DEV_TX_OFFLOAD_MBUF_FAST_FREE;
> diff --git a/examples/l3fwd-graph/main.c b/examples/l3fwd-graph/main.c
> index a0de8ca9b42d..b431b9ff5f3c 100644
> --- a/examples/l3fwd-graph/main.c
> +++ b/examples/l3fwd-graph/main.c
> @@ -112,7 +112,6 @@ static uint16_t nb_lcore_params = RTE_DIM(lcore_params_array_default);
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   	},
>   	.rx_adv_conf = {
> @@ -126,6 +125,8 @@ static struct rte_eth_conf port_conf = {
>   	},
>   };
>   
> +static uint16_t max_pkt_len;
> +
>   static struct rte_mempool *pktmbuf_pool[RTE_MAX_ETHPORTS][NB_SOCKETS];
>   
>   static struct rte_node_ethdev_config ethdev_conf[RTE_MAX_ETHPORTS];
> @@ -259,7 +260,7 @@ print_usage(const char *prgname)
>   		" [-P]"
>   		" --config (port,queue,lcore)[,(port,queue,lcore)]"
>   		" [--eth-dest=X,MM:MM:MM:MM:MM:MM]"
> -		" [--enable-jumbo [--max-pkt-len PKTLEN]]"
> +		" [--max-pkt-len PKTLEN]"
>   		" [--no-numa]"
>   		" [--per-port-pool]\n\n"
>   
> @@ -268,9 +269,7 @@ print_usage(const char *prgname)
>   		"  --config (port,queue,lcore): Rx queue configuration\n"
>   		"  --eth-dest=X,MM:MM:MM:MM:MM:MM: Ethernet destination for "
>   		"port X\n"
> -		"  --enable-jumbo: Enable jumbo frames\n"
> -		"  --max-pkt-len: Under the premise of enabling jumbo,\n"
> -		"                 maximum packet length in decimal (64-9600)\n"
> +		"  --max-pkt-len PKTLEN: maximum packet length in decimal (64-9600)\n"
>   		"  --no-numa: Disable numa awareness\n"
>   		"  --per-port-pool: Use separate buffer pool per port\n\n",
>   		prgname);
> @@ -404,7 +403,7 @@ static const char short_options[] = "p:" /* portmask */
>   #define CMD_LINE_OPT_CONFIG	   "config"
>   #define CMD_LINE_OPT_ETH_DEST	   "eth-dest"
>   #define CMD_LINE_OPT_NO_NUMA	   "no-numa"
> -#define CMD_LINE_OPT_ENABLE_JUMBO  "enable-jumbo"
> +#define CMD_LINE_OPT_MAX_PKT_LEN   "max-pkt-len"
>   #define CMD_LINE_OPT_PER_PORT_POOL "per-port-pool"
>   enum {
>   	/* Long options mapped to a short option */
> @@ -416,7 +415,7 @@ enum {
>   	CMD_LINE_OPT_CONFIG_NUM,
>   	CMD_LINE_OPT_ETH_DEST_NUM,
>   	CMD_LINE_OPT_NO_NUMA_NUM,
> -	CMD_LINE_OPT_ENABLE_JUMBO_NUM,
> +	CMD_LINE_OPT_MAX_PKT_LEN_NUM,
>   	CMD_LINE_OPT_PARSE_PER_PORT_POOL,
>   };
>   
> @@ -424,7 +423,7 @@ static const struct option lgopts[] = {
>   	{CMD_LINE_OPT_CONFIG, 1, 0, CMD_LINE_OPT_CONFIG_NUM},
>   	{CMD_LINE_OPT_ETH_DEST, 1, 0, CMD_LINE_OPT_ETH_DEST_NUM},
>   	{CMD_LINE_OPT_NO_NUMA, 0, 0, CMD_LINE_OPT_NO_NUMA_NUM},
> -	{CMD_LINE_OPT_ENABLE_JUMBO, 0, 0, CMD_LINE_OPT_ENABLE_JUMBO_NUM},
> +	{CMD_LINE_OPT_MAX_PKT_LEN, 1, 0, CMD_LINE_OPT_MAX_PKT_LEN_NUM},
>   	{CMD_LINE_OPT_PER_PORT_POOL, 0, 0, CMD_LINE_OPT_PARSE_PER_PORT_POOL},
>   	{NULL, 0, 0, 0},
>   };
> @@ -490,28 +489,8 @@ parse_args(int argc, char **argv)
>   			numa_on = 0;
>   			break;
>   
> -		case CMD_LINE_OPT_ENABLE_JUMBO_NUM: {
> -			const struct option lenopts = {"max-pkt-len",
> -						       required_argument, 0, 0};
> -
> -			port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> -			port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
> -
> -			/*
> -			 * if no max-pkt-len set, use the default
> -			 * value RTE_ETHER_MAX_LEN.
> -			 */
> -			if (getopt_long(argc, argvopt, "", &lenopts,
> -					&option_index) == 0) {
> -				ret = parse_max_pkt_len(optarg);
> -				if (ret < 64 || ret > MAX_JUMBO_PKT_LEN) {
> -					fprintf(stderr, "Invalid maximum "
> -							"packet length\n");
> -					print_usage(prgname);
> -					return -1;
> -				}
> -				port_conf.rxmode.max_rx_pkt_len = ret;
> -			}
> +		case CMD_LINE_OPT_MAX_PKT_LEN_NUM: {
> +			max_pkt_len = parse_max_pkt_len(optarg);
>   			break;
>   		}
>   
> @@ -722,6 +701,43 @@ graph_main_loop(void *conf)
>   }
>   /* >8 End of main processing loop. */
>   
> +static uint16_t
> +eth_dev_get_overhead_len(uint32_t max_rx_pktlen, uint16_t max_mtu)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_mtu != UINT16_MAX && max_rx_pktlen > max_mtu)
> +		overhead_len = max_rx_pktlen - max_mtu;
> +	else
> +		overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +
> +	return overhead_len;
> +}
> +
> +static int
> +config_port_max_pkt_len(struct rte_eth_conf *conf,
> +		struct rte_eth_dev_info *dev_info)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_pkt_len == 0)
> +		return 0;
> +
> +	if (max_pkt_len < RTE_ETHER_MIN_LEN || max_pkt_len > MAX_JUMBO_PKT_LEN)
> +		return -1;
> +
> +	overhead_len = eth_dev_get_overhead_len(dev_info->max_rx_pktlen,
> +			dev_info->max_mtu);
> +	conf->rxmode.mtu = max_pkt_len - overhead_len;
> +
> +	if (conf->rxmode.mtu > RTE_ETHER_MTU) {
> +		conf->txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
> +		conf->rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> +	}
> +
> +	return 0;
> +}
> +
>   int
>   main(int argc, char **argv)
>   {
> @@ -807,6 +823,13 @@ main(int argc, char **argv)
>   		       nb_rx_queue, n_tx_queue);
>   
>   		rte_eth_dev_info_get(portid, &dev_info);
> +
> +		ret = config_port_max_pkt_len(&local_port_conf, &dev_info);
> +		if (ret != 0)
> +			rte_exit(EXIT_FAILURE,
> +				"Invalid max packet length: %u (port %u)\n",
> +				max_pkt_len, portid);
> +
>   		if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
>   			local_port_conf.txmode.offloads |=
>   				DEV_TX_OFFLOAD_MBUF_FAST_FREE;
> diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
> index aa7b8db44ae8..e58561327c48 100644
> --- a/examples/l3fwd-power/main.c
> +++ b/examples/l3fwd-power/main.c
> @@ -251,7 +251,6 @@ uint16_t nb_lcore_params = RTE_DIM(lcore_params_array_default);
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode        = ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   		.offloads = DEV_RX_OFFLOAD_CHECKSUM,
>   	},
> @@ -266,6 +265,8 @@ static struct rte_eth_conf port_conf = {
>   	}
>   };
>   
> +static uint16_t max_pkt_len;
> +
>   static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
>   
>   
> @@ -1601,16 +1602,15 @@ print_usage(const char *prgname)
>   		"  [--config (port,queue,lcore)[,(port,queue,lcore]]"
>   		"  [--high-perf-cores CORELIST"
>   		"  [--perf-config (port,queue,hi_perf,lcore_index)[,(port,queue,hi_perf,lcore_index]]"
> -		"  [--enable-jumbo [--max-pkt-len PKTLEN]]\n"
> +		"  [--max-pkt-len PKTLEN]\n"
>   		"  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
> -		"  -P : enable promiscuous mode\n"
> +		"  -P: enable promiscuous mode\n"
>   		"  --config (port,queue,lcore): rx queues configuration\n"
>   		"  --high-perf-cores CORELIST: list of high performance cores\n"
>   		"  --perf-config: similar as config, cores specified as indices"
>   		" for bins containing high or regular performance cores\n"
>   		"  --no-numa: optional, disable numa awareness\n"
> -		"  --enable-jumbo: enable jumbo frame"
> -		" which max packet len is PKTLEN in decimal (64-9600)\n"
> +		"  --max-pkt-len PKTLEN: maximum packet length in decimal (64-9600)\n"
>   		"  --parse-ptype: parse packet type by software\n"
>   		"  --legacy: use legacy interrupt-based scaling\n"
>   		"  --empty-poll: enable empty poll detection"
> @@ -1795,6 +1795,7 @@ parse_ep_config(const char *q_arg)
>   #define CMD_LINE_OPT_INTERRUPT_ONLY "interrupt-only"
>   #define CMD_LINE_OPT_TELEMETRY "telemetry"
>   #define CMD_LINE_OPT_PMD_MGMT "pmd-mgmt"
> +#define CMD_LINE_OPT_MAX_PKT_LEN "max-pkt-len"
>   
>   /* Parse the argument given in the command line of the application */
>   static int
> @@ -1810,7 +1811,7 @@ parse_args(int argc, char **argv)
>   		{"perf-config", 1, 0, 0},
>   		{"high-perf-cores", 1, 0, 0},
>   		{"no-numa", 0, 0, 0},
> -		{"enable-jumbo", 0, 0, 0},
> +		{CMD_LINE_OPT_MAX_PKT_LEN, 1, 0, 0},
>   		{CMD_LINE_OPT_EMPTY_POLL, 1, 0, 0},
>   		{CMD_LINE_OPT_PARSE_PTYPE, 0, 0, 0},
>   		{CMD_LINE_OPT_LEGACY, 0, 0, 0},
> @@ -1954,36 +1955,10 @@ parse_args(int argc, char **argv)
>   			}
>   
>   			if (!strncmp(lgopts[option_index].name,
> -					"enable-jumbo", 12)) {
> -				struct option lenopts =
> -					{"max-pkt-len", required_argument, \
> -									0, 0};
> -
> -				printf("jumbo frame is enabled \n");
> -				port_conf.rxmode.offloads |=
> -						DEV_RX_OFFLOAD_JUMBO_FRAME;
> -				port_conf.txmode.offloads |=
> -						DEV_TX_OFFLOAD_MULTI_SEGS;
> -
> -				/**
> -				 * if no max-pkt-len set, use the default value
> -				 * RTE_ETHER_MAX_LEN
> -				 */
> -				if (0 == getopt_long(argc, argvopt, "",
> -						&lenopts, &option_index)) {
> -					ret = parse_max_pkt_len(optarg);
> -					if ((ret < 64) ||
> -						(ret > MAX_JUMBO_PKT_LEN)){
> -						printf("invalid packet "
> -								"length\n");
> -						print_usage(prgname);
> -						return -1;
> -					}
> -					port_conf.rxmode.max_rx_pkt_len = ret;
> -				}
> -				printf("set jumbo frame "
> -					"max packet length to %u\n",
> -				(unsigned int)port_conf.rxmode.max_rx_pkt_len);
> +					CMD_LINE_OPT_MAX_PKT_LEN,
> +					sizeof(CMD_LINE_OPT_MAX_PKT_LEN))) {
> +				printf("Custom frame size is configured\n");
> +				max_pkt_len = parse_max_pkt_len(optarg);
>   			}
>   
>   			if (!strncmp(lgopts[option_index].name,
> @@ -2505,6 +2480,43 @@ mode_to_str(enum appmode mode)
>   	}
>   }
>   
> +static uint16_t
> +eth_dev_get_overhead_len(uint32_t max_rx_pktlen, uint16_t max_mtu)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_mtu != UINT16_MAX && max_rx_pktlen > max_mtu)
> +		overhead_len = max_rx_pktlen - max_mtu;
> +	else
> +		overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +
> +	return overhead_len;
> +}
> +
> +static int
> +config_port_max_pkt_len(struct rte_eth_conf *conf,
> +		struct rte_eth_dev_info *dev_info)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_pkt_len == 0)
> +		return 0;
> +
> +	if (max_pkt_len < RTE_ETHER_MIN_LEN || max_pkt_len > MAX_JUMBO_PKT_LEN)
> +		return -1;
> +
> +	overhead_len = eth_dev_get_overhead_len(dev_info->max_rx_pktlen,
> +			dev_info->max_mtu);
> +	conf->rxmode.mtu = max_pkt_len - overhead_len;
> +
> +	if (conf->rxmode.mtu > RTE_ETHER_MTU) {
> +		conf->txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
> +		conf->rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> +	}
> +
> +	return 0;
> +}
> +
>   /* Power library initialized in the main routine. 8< */
>   int
>   main(int argc, char **argv)
> @@ -2622,6 +2634,12 @@ main(int argc, char **argv)
>   				"Error during getting device (port %u) info: %s\n",
>   				portid, strerror(-ret));
>   
> +		ret = config_port_max_pkt_len(&local_port_conf, &dev_info);
> +		if (ret != 0)
> +			rte_exit(EXIT_FAILURE,
> +				"Invalid max packet length: %u (port %u)\n",
> +				max_pkt_len, portid);
> +
>   		if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
>   			local_port_conf.txmode.offloads |=
>   				DEV_TX_OFFLOAD_MBUF_FAST_FREE;
> diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
> index 00ac267af1dd..cb9bc7ad6002 100644
> --- a/examples/l3fwd/main.c
> +++ b/examples/l3fwd/main.c
> @@ -121,7 +121,6 @@ static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   		.offloads = DEV_RX_OFFLOAD_CHECKSUM,
>   	},
> @@ -136,6 +135,8 @@ static struct rte_eth_conf port_conf = {
>   	},
>   };
>   
> +static uint16_t max_pkt_len;
> +
>   static struct rte_mempool *pktmbuf_pool[RTE_MAX_ETHPORTS][NB_SOCKETS];
>   static uint8_t lkp_per_socket[NB_SOCKETS];
>   
> @@ -326,7 +327,7 @@ print_usage(const char *prgname)
>   		" [--lookup]"
>   		" --config (port,queue,lcore)[,(port,queue,lcore)]"
>   		" [--eth-dest=X,MM:MM:MM:MM:MM:MM]"
> -		" [--enable-jumbo [--max-pkt-len PKTLEN]]"
> +		" [--max-pkt-len PKTLEN]"
>   		" [--no-numa]"
>   		" [--hash-entry-num]"
>   		" [--ipv6]"
> @@ -344,9 +345,7 @@ print_usage(const char *prgname)
>   		"            Accepted: em (Exact Match), lpm (Longest Prefix Match), fib (Forwarding Information Base)\n"
>   		"  --config (port,queue,lcore): Rx queue configuration\n"
>   		"  --eth-dest=X,MM:MM:MM:MM:MM:MM: Ethernet destination for port X\n"
> -		"  --enable-jumbo: Enable jumbo frames\n"
> -		"  --max-pkt-len: Under the premise of enabling jumbo,\n"
> -		"                 maximum packet length in decimal (64-9600)\n"
> +		"  --max-pkt-len PKTLEN: maximum packet length in decimal (64-9600)\n"
>   		"  --no-numa: Disable numa awareness\n"
>   		"  --hash-entry-num: Specify the hash entry number in hexadecimal to be setup\n"
>   		"  --ipv6: Set if running ipv6 packets\n"
> @@ -566,7 +565,7 @@ static const char short_options[] =
>   #define CMD_LINE_OPT_ETH_DEST "eth-dest"
>   #define CMD_LINE_OPT_NO_NUMA "no-numa"
>   #define CMD_LINE_OPT_IPV6 "ipv6"
> -#define CMD_LINE_OPT_ENABLE_JUMBO "enable-jumbo"
> +#define CMD_LINE_OPT_MAX_PKT_LEN "max-pkt-len"
>   #define CMD_LINE_OPT_HASH_ENTRY_NUM "hash-entry-num"
>   #define CMD_LINE_OPT_PARSE_PTYPE "parse-ptype"
>   #define CMD_LINE_OPT_PER_PORT_POOL "per-port-pool"
> @@ -584,7 +583,7 @@ enum {
>   	CMD_LINE_OPT_ETH_DEST_NUM,
>   	CMD_LINE_OPT_NO_NUMA_NUM,
>   	CMD_LINE_OPT_IPV6_NUM,
> -	CMD_LINE_OPT_ENABLE_JUMBO_NUM,
> +	CMD_LINE_OPT_MAX_PKT_LEN_NUM,
>   	CMD_LINE_OPT_HASH_ENTRY_NUM_NUM,
>   	CMD_LINE_OPT_PARSE_PTYPE_NUM,
>   	CMD_LINE_OPT_PARSE_PER_PORT_POOL,
> @@ -599,7 +598,7 @@ static const struct option lgopts[] = {
>   	{CMD_LINE_OPT_ETH_DEST, 1, 0, CMD_LINE_OPT_ETH_DEST_NUM},
>   	{CMD_LINE_OPT_NO_NUMA, 0, 0, CMD_LINE_OPT_NO_NUMA_NUM},
>   	{CMD_LINE_OPT_IPV6, 0, 0, CMD_LINE_OPT_IPV6_NUM},
> -	{CMD_LINE_OPT_ENABLE_JUMBO, 0, 0, CMD_LINE_OPT_ENABLE_JUMBO_NUM},
> +	{CMD_LINE_OPT_MAX_PKT_LEN, 1, 0, CMD_LINE_OPT_MAX_PKT_LEN_NUM},
>   	{CMD_LINE_OPT_HASH_ENTRY_NUM, 1, 0, CMD_LINE_OPT_HASH_ENTRY_NUM_NUM},
>   	{CMD_LINE_OPT_PARSE_PTYPE, 0, 0, CMD_LINE_OPT_PARSE_PTYPE_NUM},
>   	{CMD_LINE_OPT_PER_PORT_POOL, 0, 0, CMD_LINE_OPT_PARSE_PER_PORT_POOL},
> @@ -698,31 +697,9 @@ parse_args(int argc, char **argv)
>   			ipv6 = 1;
>   			break;
>   
> -		case CMD_LINE_OPT_ENABLE_JUMBO_NUM: {
> -			const struct option lenopts = {
> -				"max-pkt-len", required_argument, 0, 0
> -			};
> -
> -			port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> -			port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
> -
> -			/*
> -			 * if no max-pkt-len set, use the default
> -			 * value RTE_ETHER_MAX_LEN.
> -			 */
> -			if (getopt_long(argc, argvopt, "",
> -					&lenopts, &option_index) == 0) {
> -				ret = parse_max_pkt_len(optarg);
> -				if (ret < 64 || ret > MAX_JUMBO_PKT_LEN) {
> -					fprintf(stderr,
> -						"invalid maximum packet length\n");
> -					print_usage(prgname);
> -					return -1;
> -				}
> -				port_conf.rxmode.max_rx_pkt_len = ret;
> -			}
> +		case CMD_LINE_OPT_MAX_PKT_LEN_NUM:
> +			max_pkt_len = parse_max_pkt_len(optarg);
>   			break;
> -		}
>   
>   		case CMD_LINE_OPT_HASH_ENTRY_NUM_NUM:
>   			ret = parse_hash_entry_number(optarg);
> @@ -981,6 +958,43 @@ prepare_ptype_parser(uint16_t portid, uint16_t queueid)
>   	return 0;
>   }
>   
> +static uint16_t
> +eth_dev_get_overhead_len(uint32_t max_rx_pktlen, uint16_t max_mtu)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_mtu != UINT16_MAX && max_rx_pktlen > max_mtu)
> +		overhead_len = max_rx_pktlen - max_mtu;
> +	else
> +		overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +
> +	return overhead_len;
> +}
> +
> +static int
> +config_port_max_pkt_len(struct rte_eth_conf *conf,
> +		struct rte_eth_dev_info *dev_info)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_pkt_len == 0)
> +		return 0;
> +
> +	if (max_pkt_len < RTE_ETHER_MIN_LEN || max_pkt_len > MAX_JUMBO_PKT_LEN)
> +		return -1;
> +
> +	overhead_len = eth_dev_get_overhead_len(dev_info->max_rx_pktlen,
> +			dev_info->max_mtu);
> +	conf->rxmode.mtu = max_pkt_len - overhead_len;
> +
> +	if (conf->rxmode.mtu > RTE_ETHER_MTU) {
> +		conf->txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
> +		conf->rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> +	}
> +
> +	return 0;
> +}
> +
>   static void
>   l3fwd_poll_resource_setup(void)
>   {
> @@ -1035,6 +1049,12 @@ l3fwd_poll_resource_setup(void)
>   				"Error during getting device (port %u) info: %s\n",
>   				portid, strerror(-ret));
>   
> +		ret = config_port_max_pkt_len(&local_port_conf, &dev_info);
> +		if (ret != 0)
> +			rte_exit(EXIT_FAILURE,
> +				"Invalid max packet length: %u (port %u)\n",
> +				max_pkt_len, portid);
> +
>   		if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
>   			local_port_conf.txmode.offloads |=
>   				DEV_TX_OFFLOAD_MBUF_FAST_FREE;
> diff --git a/examples/performance-thread/l3fwd-thread/main.c b/examples/performance-thread/l3fwd-thread/main.c
> index 2f593abf263d..b6cddc8c7b51 100644
> --- a/examples/performance-thread/l3fwd-thread/main.c
> +++ b/examples/performance-thread/l3fwd-thread/main.c
> @@ -308,7 +308,6 @@ static uint16_t nb_tx_thread_params = RTE_DIM(tx_thread_params_array_default);
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   		.offloads = DEV_RX_OFFLOAD_CHECKSUM,
>   	},
> @@ -323,6 +322,8 @@ static struct rte_eth_conf port_conf = {
>   	},
>   };
>   
> +static uint16_t max_pkt_len;
> +
>   static struct rte_mempool *pktmbuf_pool[NB_SOCKETS];
>   
>   #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
> @@ -2643,7 +2644,7 @@ print_usage(const char *prgname)
>   	printf("%s [EAL options] -- -p PORTMASK -P"
>   		"  [--rx (port,queue,lcore,thread)[,(port,queue,lcore,thread]]"
>   		"  [--tx (lcore,thread)[,(lcore,thread]]"
> -		"  [--enable-jumbo [--max-pkt-len PKTLEN]]\n"
> +		"  [--max-pkt-len PKTLEN]"
>   		"  [--parse-ptype]\n\n"
>   		"  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
>   		"  -P : enable promiscuous mode\n"
> @@ -2653,8 +2654,7 @@ print_usage(const char *prgname)
>   		"  --eth-dest=X,MM:MM:MM:MM:MM:MM: optional, ethernet destination for port X\n"
>   		"  --no-numa: optional, disable numa awareness\n"
>   		"  --ipv6: optional, specify it if running ipv6 packets\n"
> -		"  --enable-jumbo: enable jumbo frame"
> -		" which max packet len is PKTLEN in decimal (64-9600)\n"
> +		"  --max-pkt-len PKTLEN: maximum packet length in decimal (64-9600)\n"
>   		"  --hash-entry-num: specify the hash entry number in hexadecimal to be setup\n"
>   		"  --no-lthreads: turn off lthread model\n"
>   		"  --parse-ptype: set to use software to analyze packet type\n\n",
> @@ -2877,8 +2877,8 @@ enum {
>   	OPT_NO_NUMA_NUM,
>   #define OPT_IPV6            "ipv6"
>   	OPT_IPV6_NUM,
> -#define OPT_ENABLE_JUMBO    "enable-jumbo"
> -	OPT_ENABLE_JUMBO_NUM,
> +#define OPT_MAX_PKT_LEN "max-pkt-len"
> +	OPT_MAX_PKT_LEN_NUM,
>   #define OPT_HASH_ENTRY_NUM  "hash-entry-num"
>   	OPT_HASH_ENTRY_NUM_NUM,
>   #define OPT_NO_LTHREADS     "no-lthreads"
> @@ -2902,7 +2902,7 @@ parse_args(int argc, char **argv)
>   		{OPT_ETH_DEST,       1, NULL, OPT_ETH_DEST_NUM       },
>   		{OPT_NO_NUMA,        0, NULL, OPT_NO_NUMA_NUM        },
>   		{OPT_IPV6,           0, NULL, OPT_IPV6_NUM           },
> -		{OPT_ENABLE_JUMBO,   0, NULL, OPT_ENABLE_JUMBO_NUM   },
> +		{OPT_MAX_PKT_LEN,    1, NULL, OPT_MAX_PKT_LEN_NUM    },
>   		{OPT_HASH_ENTRY_NUM, 1, NULL, OPT_HASH_ENTRY_NUM_NUM },
>   		{OPT_NO_LTHREADS,    0, NULL, OPT_NO_LTHREADS_NUM    },
>   		{OPT_PARSE_PTYPE,    0, NULL, OPT_PARSE_PTYPE_NUM    },
> @@ -2981,35 +2981,10 @@ parse_args(int argc, char **argv)
>   			parse_ptype_on = 1;
>   			break;
>   
> -		case OPT_ENABLE_JUMBO_NUM:
> -		{
> -			struct option lenopts = {"max-pkt-len",
> -					required_argument, 0, 0};
> -
> -			printf("jumbo frame is enabled - disabling simple TX path\n");
> -			port_conf.rxmode.offloads |=
> -					DEV_RX_OFFLOAD_JUMBO_FRAME;
> -			port_conf.txmode.offloads |=
> -					DEV_TX_OFFLOAD_MULTI_SEGS;
> -
> -			/* if no max-pkt-len set, use the default value
> -			 * RTE_ETHER_MAX_LEN
> -			 */
> -			if (getopt_long(argc, argvopt, "", &lenopts,
> -					&option_index) == 0) {
> -
> -				ret = parse_max_pkt_len(optarg);
> -				if ((ret < 64) || (ret > MAX_JUMBO_PKT_LEN)) {
> -					printf("invalid packet length\n");
> -					print_usage(prgname);
> -					return -1;
> -				}
> -				port_conf.rxmode.max_rx_pkt_len = ret;
> -			}
> -			printf("set jumbo frame max packet length to %u\n",
> -				(unsigned int)port_conf.rxmode.max_rx_pkt_len);
> +		case OPT_MAX_PKT_LEN_NUM:
> +			max_pkt_len = parse_max_pkt_len(optarg);
>   			break;
> -		}
> +
>   #if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
>   		case OPT_HASH_ENTRY_NUM_NUM:
>   			ret = parse_hash_entry_number(optarg);
> @@ -3489,6 +3464,43 @@ check_all_ports_link_status(uint32_t port_mask)
>   	}
>   }
>   
> +static uint16_t
> +eth_dev_get_overhead_len(uint32_t max_rx_pktlen, uint16_t max_mtu)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_mtu != UINT16_MAX && max_rx_pktlen > max_mtu)
> +		overhead_len = max_rx_pktlen - max_mtu;
> +	else
> +		overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +
> +	return overhead_len;
> +}
> +
> +static int
> +config_port_max_pkt_len(struct rte_eth_conf *conf,
> +		struct rte_eth_dev_info *dev_info)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_pkt_len == 0)
> +		return 0;
> +
> +	if (max_pkt_len < RTE_ETHER_MIN_LEN || max_pkt_len > MAX_JUMBO_PKT_LEN)
> +		return -1;
> +
> +	overhead_len = eth_dev_get_overhead_len(dev_info->max_rx_pktlen,
> +			dev_info->max_mtu);
> +	conf->rxmode.mtu = max_pkt_len - overhead_len;
> +
> +	if (conf->rxmode.mtu > RTE_ETHER_MTU) {
> +		conf->txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
> +		conf->rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
> +	}
> +
> +	return 0;
> +}
> +
>   int
>   main(int argc, char **argv)
>   {
> @@ -3577,6 +3589,12 @@ main(int argc, char **argv)
>   				"Error during getting device (port %u) info: %s\n",
>   				portid, strerror(-ret));
>   
> +		ret = config_port_max_pkt_len(&local_port_conf, &dev_info);
> +		if (ret != 0)
> +			rte_exit(EXIT_FAILURE,
> +				"Invalid max packet length: %u (port %u)\n",
> +				max_pkt_len, portid);
> +
>   		if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
>   			local_port_conf.txmode.offloads |=
>   				DEV_TX_OFFLOAD_MBUF_FAST_FREE;
> diff --git a/examples/performance-thread/l3fwd-thread/test.sh b/examples/performance-thread/l3fwd-thread/test.sh
> index f0b6e271a5f3..3dd33407ea41 100755
> --- a/examples/performance-thread/l3fwd-thread/test.sh
> +++ b/examples/performance-thread/l3fwd-thread/test.sh
> @@ -11,7 +11,7 @@ case "$1" in
>   		echo "1.1 1 L-core per pcore (N=2)"
>   
>   		./build/l3fwd-thread -c ff -n 2 -- -P -p 3 \
> -				--enable-jumbo --max-pkt-len 1500  \
> +				--max-pkt-len 1500  \
>   				--rx="(0,0,0,0)(1,0,0,0)"          \
>   				--tx="(1,0)"                       \
>   				--stat-lcore 2                     \
> @@ -23,7 +23,7 @@ case "$1" in
>   		echo "1.2 1 L-core per pcore (N=4)"
>   
>   		./build/l3fwd-thread -c ff -n 2 -- -P -p 3 \
> -				--enable-jumbo --max-pkt-len 1500  \
> +				--max-pkt-len 1500  \
>   				--rx="(0,0,0,0)(1,0,1,1)"          \
>   				--tx="(2,0)(3,1)"                  \
>   				--stat-lcore 4                     \
> @@ -34,7 +34,7 @@ case "$1" in
>   		echo "1.3 1 L-core per pcore (N=8)"
>   
>   		./build/l3fwd-thread -c 1ff -n 2 -- -P -p 3                          \
> -				--enable-jumbo --max-pkt-len 1500                            \
> +				--max-pkt-len 1500                            \
>   				--rx="(0,0,0,0)(0,1,1,1)(1,0,2,2)(1,1,3,3)"                  \
>   				--tx="(4,0)(5,1)(6,2)(7,3)"                                  \
>   				--stat-lcore 8                                               \
> @@ -45,7 +45,7 @@ case "$1" in
>   		echo "1.3 1 L-core per pcore (N=16)"
>   
>   		./build/l3fwd-thread -c 3ffff -n 2 -- -P -p 3                          \
> -				--enable-jumbo --max-pkt-len 1500                              \
> +				--max-pkt-len 1500                              \
>   				--rx="(0,0,0,0)(0,1,1,1)(0,2,2,2)(0,3,3,3)(1,0,4,4)(1,1,5,5)(1,2,6,6)(1,3,7,7)" \
>   				--tx="(8,0)(9,1)(10,2)(11,3)(12,4)(13,5)(14,6)(15,7)"          \
>   				--stat-lcore 16                                                \
> @@ -61,7 +61,7 @@ case "$1" in
>   		echo "2.1 N L-core per pcore (N=2)"
>   
>   		./build/l3fwd-thread -c ff -n 2 --lcores="2,(0-1)@0" -- -P -p 3 \
> -				--enable-jumbo --max-pkt-len 1500                       \
> +				--max-pkt-len 1500                       \
>   				--rx="(0,0,0,0)(1,0,0,0)"                               \
>   				--tx="(1,0)"                                            \
>   				--stat-lcore 2                                          \
> @@ -73,7 +73,7 @@ case "$1" in
>   		echo "2.2 N L-core per pcore (N=4)"
>   
>   		./build/l3fwd-thread -c ff -n 2 --lcores="(0-3)@0,4" -- -P -p 3 \
> -				--enable-jumbo --max-pkt-len 1500  \
> +				--max-pkt-len 1500  \
>   				--rx="(0,0,0,0)(1,0,1,1)"          \
>   				--tx="(2,0)(3,1)"                  \
>   				--stat-lcore 4                     \
> @@ -84,7 +84,7 @@ case "$1" in
>   		echo "2.3 N L-core per pcore (N=8)"
>   
>   		./build/l3fwd-thread -c 3ffff -n 2 --lcores="(0-7)@0,8" -- -P -p 3     \
> -				--enable-jumbo --max-pkt-len 1500                              \
> +				--max-pkt-len 1500                              \
>   				--rx="(0,0,0,0)(0,1,1,1)(1,0,2,2)(1,1,3,3)"                    \
>   				--tx="(4,0)(5,1)(6,2)(7,3)"                                    \
>   				--stat-lcore 8                                                 \
> @@ -95,7 +95,7 @@ case "$1" in
>   		echo "2.3 N L-core per pcore (N=16)"
>   
>   		./build/l3fwd-thread -c 3ffff -n 2 --lcores="(0-15)@0,16" -- -P -p 3   \
> -				--enable-jumbo --max-pkt-len 1500                              \
> +				--max-pkt-len 1500                              \
>   				--rx="(0,0,0,0)(0,1,1,1)(0,2,2,2)(0,3,3,3)(1,0,4,4)(1,1,5,5)(1,2,6,6)(1,3,7,7)" \
>   				--tx="(8,0)(9,1)(10,2)(11,3)(12,4)(13,5)(14,6)(15,7)"          \
>   				--stat-lcore 16                                                \
> @@ -111,7 +111,7 @@ case "$1" in
>   		echo "3.1 N L-threads per pcore (N=2)"
>   
>   		./build/l3fwd-thread -c ff -n 2 -- -P -p 3  \
> -				--enable-jumbo --max-pkt-len 1500   \
> +				--max-pkt-len 1500   \
>   				--rx="(0,0,0,0)(1,0,0,0)"           \
>   				--tx="(0,0)"                        \
>   				--stat-lcore 1
> @@ -121,7 +121,7 @@ case "$1" in
>   		echo "3.2 N L-threads per pcore (N=4)"
>   
>   		./build/l3fwd-thread -c ff -n 2 -- -P -p 3  \
> -				--enable-jumbo --max-pkt-len 1500   \
> +				--max-pkt-len 1500   \
>   				--rx="(0,0,0,0)(1,0,0,1)"           \
>   				--tx="(0,0)(0,1)"                   \
>   				--stat-lcore 1
> @@ -131,7 +131,7 @@ case "$1" in
>   		echo "3.2 N L-threads per pcore (N=8)"
>   
>   		./build/l3fwd-thread -c ff -n 2 -- -P -p 3                             \
> -				--enable-jumbo --max-pkt-len 1500                              \
> +				--max-pkt-len 1500                              \
>   				--rx="(0,0,0,0)(0,1,0,1)(1,0,0,2)(1,1,0,3)"                    \
>   				--tx="(0,0)(0,1)(0,2)(0,3)"                                    \
>   				--stat-lcore 1
> @@ -141,7 +141,7 @@ case "$1" in
>   		echo "3.2 N L-threads per pcore (N=16)"
>   
>   		./build/l3fwd-thread -c ff -n 2 -- -P -p 3                             \
> -				--enable-jumbo --max-pkt-len 1500                              \
> +				--max-pkt-len 1500                              \
>   				--rx="(0,0,0,0)(0,1,0,1)(0,2,0,2)(0,0,0,3)(1,0,0,4)(1,1,0,5)(1,2,0,6)(1,3,0,7)" \
>   				--tx="(0,0)(0,1)(0,2)(0,3)(0,4)(0,5)(0,6)(0,7)"                \
>   				--stat-lcore 1
> diff --git a/examples/pipeline/obj.c b/examples/pipeline/obj.c
> index 467cda5a6dac..4f20dfc4be06 100644
> --- a/examples/pipeline/obj.c
> +++ b/examples/pipeline/obj.c
> @@ -134,7 +134,7 @@ static struct rte_eth_conf port_conf_default = {
>   	.link_speeds = 0,
>   	.rxmode = {
>   		.mq_mode = ETH_MQ_RX_NONE,
> -		.max_rx_pkt_len = 9000, /* Jumbo frame max packet len */
> +		.mtu = 9000 - (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN), /* Jumbo frame MTU */
>   		.split_hdr_size = 0, /* Header split buffer size */
>   	},
>   	.rx_adv_conf = {
> diff --git a/examples/ptpclient/ptpclient.c b/examples/ptpclient/ptpclient.c
> index 4f32ade7fbf7..3b6c6c297f43 100644
> --- a/examples/ptpclient/ptpclient.c
> +++ b/examples/ptpclient/ptpclient.c
> @@ -47,12 +47,6 @@ uint32_t ptp_enabled_port_mask;
>   uint8_t ptp_enabled_port_nb;
>   static uint8_t ptp_enabled_ports[RTE_MAX_ETHPORTS];
>   
> -static const struct rte_eth_conf port_conf_default = {
> -	.rxmode = {
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
> -	},
> -};
> -
>   static const struct rte_ether_addr ether_multicast = {
>   	.addr_bytes = {0x01, 0x1b, 0x19, 0x0, 0x0, 0x0}
>   };
> @@ -178,7 +172,7 @@ static inline int
>   port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   {
>   	struct rte_eth_dev_info dev_info;
> -	struct rte_eth_conf port_conf = port_conf_default;
> +	struct rte_eth_conf port_conf;
>   	const uint16_t rx_rings = 1;
>   	const uint16_t tx_rings = 1;
>   	int retval;
> @@ -189,6 +183,8 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   	if (!rte_eth_dev_is_valid_port(port))
>   		return -1;
>   
> +	memset(&port_conf, 0, sizeof(struct rte_eth_conf));
> +
>   	retval = rte_eth_dev_info_get(port, &dev_info);
>   	if (retval != 0) {
>   		printf("Error during getting device (port %u) info: %s\n",
> diff --git a/examples/qos_meter/main.c b/examples/qos_meter/main.c
> index 7ffccc8369dc..c32d2e12e633 100644
> --- a/examples/qos_meter/main.c
> +++ b/examples/qos_meter/main.c
> @@ -52,7 +52,6 @@ static struct rte_mempool *pool = NULL;
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
>   		.mq_mode	= ETH_MQ_RX_RSS,
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   		.offloads = DEV_RX_OFFLOAD_CHECKSUM,
>   	},
> diff --git a/examples/qos_sched/init.c b/examples/qos_sched/init.c
> index 1abe003fc6ae..1367569c65db 100644
> --- a/examples/qos_sched/init.c
> +++ b/examples/qos_sched/init.c
> @@ -57,7 +57,6 @@ struct flow_conf qos_conf[MAX_DATA_STREAMS];
>   
>   static struct rte_eth_conf port_conf = {
>   	.rxmode = {
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
>   		.split_hdr_size = 0,
>   	},
>   	.txmode = {
> diff --git a/examples/rxtx_callbacks/main.c b/examples/rxtx_callbacks/main.c
> index ab6fa7d56c5d..6845c396b8d9 100644
> --- a/examples/rxtx_callbacks/main.c
> +++ b/examples/rxtx_callbacks/main.c
> @@ -40,12 +40,6 @@ tsc_field(struct rte_mbuf *mbuf)
>   static const char usage[] =
>   	"%s EAL_ARGS -- [-t]\n";
>   
> -static const struct rte_eth_conf port_conf_default = {
> -	.rxmode = {
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
> -	},
> -};
> -
>   static struct {
>   	uint64_t total_cycles;
>   	uint64_t total_queue_cycles;
> @@ -124,7 +118,7 @@ calc_latency(uint16_t port, uint16_t qidx __rte_unused,
>   static inline int
>   port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   {
> -	struct rte_eth_conf port_conf = port_conf_default;
> +	struct rte_eth_conf port_conf;
>   	const uint16_t rx_rings = 1, tx_rings = 1;
>   	uint16_t nb_rxd = RX_RING_SIZE;
>   	uint16_t nb_txd = TX_RING_SIZE;
> @@ -137,6 +131,8 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   	if (!rte_eth_dev_is_valid_port(port))
>   		return -1;
>   
> +	memset(&port_conf, 0, sizeof(struct rte_eth_conf));
> +
>   	retval = rte_eth_dev_info_get(port, &dev_info);
>   	if (retval != 0) {
>   		printf("Error during getting device (port %u) info: %s\n",
> diff --git a/examples/skeleton/basicfwd.c b/examples/skeleton/basicfwd.c
> index ae9bbee8d820..fd7207aee758 100644
> --- a/examples/skeleton/basicfwd.c
> +++ b/examples/skeleton/basicfwd.c
> @@ -17,14 +17,6 @@
>   #define MBUF_CACHE_SIZE 250
>   #define BURST_SIZE 32
>   
> -/* Configuration of ethernet ports. 8<  */
> -static const struct rte_eth_conf port_conf_default = {
> -	.rxmode = {
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
> -	},
> -};
> -/* >8 End of configuration of ethernet ports. */
> -
>   /* basicfwd.c: Basic DPDK skeleton forwarding example. */
>   
>   /*
> @@ -36,7 +28,7 @@ static const struct rte_eth_conf port_conf_default = {
>   static inline int
>   port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   {
> -	struct rte_eth_conf port_conf = port_conf_default;
> +	struct rte_eth_conf port_conf;
>   	const uint16_t rx_rings = 1, tx_rings = 1;
>   	uint16_t nb_rxd = RX_RING_SIZE;
>   	uint16_t nb_txd = TX_RING_SIZE;
> @@ -48,6 +40,8 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   	if (!rte_eth_dev_is_valid_port(port))
>   		return -1;
>   
> +	memset(&port_conf, 0, sizeof(struct rte_eth_conf));
> +
>   	retval = rte_eth_dev_info_get(port, &dev_info);
>   	if (retval != 0) {
>   		printf("Error during getting device (port %u) info: %s\n",
> diff --git a/examples/vhost/main.c b/examples/vhost/main.c
> index d0bf1f31e36a..da381b41c0c5 100644
> --- a/examples/vhost/main.c
> +++ b/examples/vhost/main.c
> @@ -44,6 +44,7 @@
>   #define BURST_RX_RETRIES 4		/* Number of retries on RX. */
>   
>   #define JUMBO_FRAME_MAX_SIZE    0x2600
> +#define MAX_MTU (JUMBO_FRAME_MAX_SIZE - (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN))
>   
>   /* State of virtio device. */
>   #define DEVICE_MAC_LEARNING 0
> @@ -633,8 +634,7 @@ us_vhost_parse_args(int argc, char **argv)
>   			if (ret) {
>   				vmdq_conf_default.rxmode.offloads |=
>   					DEV_RX_OFFLOAD_JUMBO_FRAME;
> -				vmdq_conf_default.rxmode.max_rx_pkt_len
> -					= JUMBO_FRAME_MAX_SIZE;
> +				vmdq_conf_default.rxmode.mtu = MAX_MTU;
>   			}
>   			break;
>   
> diff --git a/examples/vm_power_manager/main.c b/examples/vm_power_manager/main.c
> index e59fb7d3478b..e19d79a40802 100644
> --- a/examples/vm_power_manager/main.c
> +++ b/examples/vm_power_manager/main.c
> @@ -51,17 +51,10 @@
>   static uint32_t enabled_port_mask;
>   static volatile bool force_quit;
>   
> -/****************/
> -static const struct rte_eth_conf port_conf_default = {
> -	.rxmode = {
> -		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
> -	},
> -};
> -
>   static inline int
>   port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   {
> -	struct rte_eth_conf port_conf = port_conf_default;
> +	struct rte_eth_conf port_conf;
>   	const uint16_t rx_rings = 1, tx_rings = 1;
>   	int retval;
>   	uint16_t q;
> @@ -71,6 +64,8 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
>   	if (!rte_eth_dev_is_valid_port(port))
>   		return -1;
>   
> +	memset(&port_conf, 0, sizeof(struct rte_eth_conf));
> +
>   	retval = rte_eth_dev_info_get(port, &dev_info);
>   	if (retval != 0) {
>   		printf("Error during getting device (port %u) info: %s\n",
> diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
> index daf5ca924221..4d0584af52e3 100644
> --- a/lib/ethdev/rte_ethdev.c
> +++ b/lib/ethdev/rte_ethdev.c
> @@ -1324,6 +1324,19 @@ eth_dev_validate_offloads(uint16_t port_id, uint64_t req_offloads,
>   	return ret;
>   }
>   
> +static uint16_t
> +eth_dev_get_overhead_len(uint32_t max_rx_pktlen, uint16_t max_mtu)
> +{
> +	uint16_t overhead_len;
> +
> +	if (max_mtu != UINT16_MAX && max_rx_pktlen > max_mtu)
> +		overhead_len = max_rx_pktlen - max_mtu;
> +	else
> +		overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +
> +	return overhead_len;
> +}
> +
>   int
>   rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
>   		      const struct rte_eth_conf *dev_conf)
> @@ -1331,6 +1344,7 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
>   	struct rte_eth_dev *dev;
>   	struct rte_eth_dev_info dev_info;
>   	struct rte_eth_conf orig_conf;
> +	uint32_t max_rx_pktlen;
>   	uint16_t overhead_len;
>   	int diag;
>   	int ret;
> @@ -1381,11 +1395,8 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
>   		goto rollback;
>   
>   	/* Get the real Ethernet overhead length */
> -	if (dev_info.max_mtu != UINT16_MAX &&
> -	    dev_info.max_rx_pktlen > dev_info.max_mtu)
> -		overhead_len = dev_info.max_rx_pktlen - dev_info.max_mtu;
> -	else
> -		overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> +	overhead_len = eth_dev_get_overhead_len(dev_info.max_rx_pktlen,
> +			dev_info.max_mtu);
>   
>   	/* If number of queues specified by application for both Rx and Tx is
>   	 * zero, use driver preferred values. This cannot be done individually
> @@ -1454,49 +1465,45 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
>   	}
>   
>   	/*
> -	 * If jumbo frames are enabled, check that the maximum RX packet
> -	 * length is supported by the configured device.
> +	 * Check that the maximum RX packet length is supported by the
> +	 * configured device.
>   	 */
> -	if (dev_conf->rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> -		if (dev_conf->rxmode.max_rx_pkt_len > dev_info.max_rx_pktlen) {
> -			RTE_ETHDEV_LOG(ERR,
> -				"Ethdev port_id=%u max_rx_pkt_len %u > max valid value %u\n",
> -				port_id, dev_conf->rxmode.max_rx_pkt_len,
> -				dev_info.max_rx_pktlen);
> -			ret = -EINVAL;
> -			goto rollback;
> -		} else if (dev_conf->rxmode.max_rx_pkt_len < RTE_ETHER_MIN_LEN) {
> -			RTE_ETHDEV_LOG(ERR,
> -				"Ethdev port_id=%u max_rx_pkt_len %u < min valid value %u\n",
> -				port_id, dev_conf->rxmode.max_rx_pkt_len,
> -				(unsigned int)RTE_ETHER_MIN_LEN);
> -			ret = -EINVAL;
> -			goto rollback;
> -		}
> +	if (dev_conf->rxmode.mtu == 0)
> +		dev->data->dev_conf.rxmode.mtu = RTE_ETHER_MTU;
> +	max_rx_pktlen = dev->data->dev_conf.rxmode.mtu + overhead_len;
> +	if (max_rx_pktlen > dev_info.max_rx_pktlen) {
> +		RTE_ETHDEV_LOG(ERR,
> +			"Ethdev port_id=%u max_rx_pktlen %u > max valid value %u\n",
> +			port_id, max_rx_pktlen, dev_info.max_rx_pktlen);
> +		ret = -EINVAL;
> +		goto rollback;
> +	} else if (max_rx_pktlen < RTE_ETHER_MIN_LEN) {
> +		RTE_ETHDEV_LOG(ERR,
> +			"Ethdev port_id=%u max_rx_pktlen %u < min valid value %u\n",
> +			port_id, max_rx_pktlen, RTE_ETHER_MIN_LEN);
> +		ret = -EINVAL;
> +		goto rollback;
> +	}
>   
> -		/* Scale the MTU size to adapt max_rx_pkt_len */
> -		dev->data->mtu = dev->data->dev_conf.rxmode.max_rx_pkt_len -
> -				overhead_len;
> -	} else {
> -		uint16_t pktlen = dev_conf->rxmode.max_rx_pkt_len;
> -		if (pktlen < RTE_ETHER_MIN_MTU + overhead_len ||
> -		    pktlen > RTE_ETHER_MTU + overhead_len)
> +	if ((dev_conf->rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) == 0) {
> +		if (dev->data->dev_conf.rxmode.mtu < RTE_ETHER_MIN_MTU ||
> +				dev->data->dev_conf.rxmode.mtu > RTE_ETHER_MTU)
>   			/* Use default value */
> -			dev->data->dev_conf.rxmode.max_rx_pkt_len =
> -						RTE_ETHER_MTU + overhead_len;
> +			dev->data->dev_conf.rxmode.mtu = RTE_ETHER_MTU;
>   	}
>   
> +	dev->data->mtu = dev->data->dev_conf.rxmode.mtu;
> +
>   	/*
>   	 * If LRO is enabled, check that the maximum aggregated packet
>   	 * size is supported by the configured device.
>   	 */
>   	if (dev_conf->rxmode.offloads & DEV_RX_OFFLOAD_TCP_LRO) {
>   		if (dev_conf->rxmode.max_lro_pkt_size == 0)
> -			dev->data->dev_conf.rxmode.max_lro_pkt_size =
> -				dev->data->dev_conf.rxmode.max_rx_pkt_len;
> +			dev->data->dev_conf.rxmode.max_lro_pkt_size = max_rx_pktlen;
>   		ret = eth_dev_check_lro_pkt_size(port_id,
>   				dev->data->dev_conf.rxmode.max_lro_pkt_size,
> -				dev->data->dev_conf.rxmode.max_rx_pkt_len,
> +				max_rx_pktlen,
>   				dev_info.max_lro_pkt_size);
>   		if (ret != 0)
>   			goto rollback;
> @@ -2156,13 +2163,20 @@ rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id,
>   	 * If LRO is enabled, check that the maximum aggregated packet
>   	 * size is supported by the configured device.
>   	 */
> +	/* Get the real Ethernet overhead length */
>   	if (local_conf.offloads & DEV_RX_OFFLOAD_TCP_LRO) {
> +		uint16_t overhead_len;
> +		uint32_t max_rx_pktlen;
> +		int ret;
> +
> +		overhead_len = eth_dev_get_overhead_len(dev_info.max_rx_pktlen,
> +				dev_info.max_mtu);
> +		max_rx_pktlen = dev->data->mtu + overhead_len;
>   		if (dev->data->dev_conf.rxmode.max_lro_pkt_size == 0)
> -			dev->data->dev_conf.rxmode.max_lro_pkt_size =
> -				dev->data->dev_conf.rxmode.max_rx_pkt_len;
> -		int ret = eth_dev_check_lro_pkt_size(port_id,
> +			dev->data->dev_conf.rxmode.max_lro_pkt_size = max_rx_pktlen;
> +		ret = eth_dev_check_lro_pkt_size(port_id,
>   				dev->data->dev_conf.rxmode.max_lro_pkt_size,
> -				dev->data->dev_conf.rxmode.max_rx_pkt_len,
> +				max_rx_pktlen,
>   				dev_info.max_lro_pkt_size);
>   		if (ret != 0)
>   			return ret;
> diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
> index afdc53b674cc..9fba2bd73c84 100644
> --- a/lib/ethdev/rte_ethdev.h
> +++ b/lib/ethdev/rte_ethdev.h
> @@ -416,7 +416,7 @@ enum rte_eth_tx_mq_mode {
>   struct rte_eth_rxmode {
>   	/** The multi-queue packet distribution mode to be used, e.g. RSS. */
>   	enum rte_eth_rx_mq_mode mq_mode;
> -	uint32_t max_rx_pkt_len;  /**< Only used if JUMBO_FRAME enabled. */
> +	uint32_t mtu;  /**< Requested MTU. */
>   	/** Maximum allowed size of LRO aggregated packet. */
>   	uint32_t max_lro_pkt_size;
>   	uint16_t split_hdr_size;  /**< hdr buf size (header_split enabled).*/
> diff --git a/lib/ethdev/rte_ethdev_trace.h b/lib/ethdev/rte_ethdev_trace.h
> index 0036bda7465c..1491c815c312 100644
> --- a/lib/ethdev/rte_ethdev_trace.h
> +++ b/lib/ethdev/rte_ethdev_trace.h
> @@ -28,7 +28,7 @@ RTE_TRACE_POINT(
>   	rte_trace_point_emit_u16(nb_tx_q);
>   	rte_trace_point_emit_u32(dev_conf->link_speeds);
>   	rte_trace_point_emit_u32(dev_conf->rxmode.mq_mode);
> -	rte_trace_point_emit_u32(dev_conf->rxmode.max_rx_pkt_len);
> +	rte_trace_point_emit_u32(dev_conf->rxmode.mtu);
>   	rte_trace_point_emit_u64(dev_conf->rxmode.offloads);
>   	rte_trace_point_emit_u32(dev_conf->txmode.mq_mode);
>   	rte_trace_point_emit_u64(dev_conf->txmode.offloads);

  parent reply	other threads:[~2021-10-09 10:56 UTC|newest]

Thread overview: 112+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-09 17:29 [dpdk-dev] [PATCH 1/4] " Ferruh Yigit
2021-07-09 17:29 ` [dpdk-dev] [PATCH 2/4] ethdev: move jumbo frame offload check to library Ferruh Yigit
2021-07-13 13:48   ` Andrew Rybchenko
2021-07-21 12:26     ` Ferruh Yigit
2021-07-18  7:49   ` Xu, Rosen
2021-07-19 14:38   ` Ajit Khaparde
2021-07-09 17:29 ` [dpdk-dev] [PATCH 3/4] ethdev: move check to library for MTU set Ferruh Yigit
2021-07-13 13:56   ` Andrew Rybchenko
2021-07-18  7:52   ` Xu, Rosen
2021-07-09 17:29 ` [dpdk-dev] [PATCH 4/4] ethdev: remove jumbo offload flag Ferruh Yigit
2021-07-13 14:07   ` Andrew Rybchenko
2021-07-21 12:26     ` Ferruh Yigit
2021-07-21 12:39     ` Ferruh Yigit
2021-07-18  7:53   ` Xu, Rosen
2021-07-13 12:47 ` [dpdk-dev] [PATCH 1/4] ethdev: fix max Rx packet length Andrew Rybchenko
2021-07-21 16:46   ` Ferruh Yigit
2021-07-22  1:31     ` Ajit Khaparde
2021-07-22 10:27       ` Ferruh Yigit
2021-07-22 10:38         ` Andrew Rybchenko
2021-07-18  7:45 ` Xu, Rosen
2021-07-19  3:35 ` Huisong Li
2021-07-21 15:29   ` Ferruh Yigit
2021-07-22  7:21     ` Huisong Li
2021-07-22 10:12       ` Ferruh Yigit
2021-07-22 10:15         ` Andrew Rybchenko
2021-07-22 14:43           ` Stephen Hemminger
2021-09-17  1:08             ` Min Hu (Connor)
2021-09-17  8:04               ` Ferruh Yigit
2021-09-17  8:16                 ` Min Hu (Connor)
2021-09-17  8:17                 ` Min Hu (Connor)
2021-07-22 17:21 ` [dpdk-dev] [PATCH v2 1/6] " Ferruh Yigit
2021-07-22 17:21   ` [dpdk-dev] [PATCH v2 2/6] ethdev: move jumbo frame offload check to library Ferruh Yigit
2021-07-22 17:21   ` [dpdk-dev] [PATCH v2 3/6] ethdev: move check to library for MTU set Ferruh Yigit
2021-07-22 17:21   ` [dpdk-dev] [PATCH v2 4/6] ethdev: remove jumbo offload flag Ferruh Yigit
2021-07-22 17:21   ` [dpdk-dev] [PATCH v2 5/6] ethdev: unify MTU checks Ferruh Yigit
2021-07-23  3:29     ` Huisong Li
2021-07-22 17:21   ` [dpdk-dev] [PATCH v2 6/6] examples/ip_reassembly: remove unused parameter Ferruh Yigit
2021-10-01 14:36   ` [dpdk-dev] [PATCH v3 1/6] ethdev: fix max Rx packet length Ferruh Yigit
2021-10-01 14:36     ` [dpdk-dev] [PATCH v3 2/6] ethdev: move jumbo frame offload check to library Ferruh Yigit
2021-10-04  5:08       ` Somnath Kotur
2021-10-01 14:36     ` [dpdk-dev] [PATCH v3 3/6] ethdev: move check to library for MTU set Ferruh Yigit
2021-10-04  5:09       ` Somnath Kotur
2021-10-01 14:36     ` [dpdk-dev] [PATCH v3 4/6] ethdev: remove jumbo offload flag Ferruh Yigit
     [not found]       ` <CAOBf=muYkU2dwgi3iC8Q7pdSNTJsMUwWYdXj14KeN_=_mUGa0w@mail.gmail.com>
2021-10-04  7:55         ` Somnath Kotur
2021-10-05 16:48           ` Ferruh Yigit
2021-10-01 14:36     ` [dpdk-dev] [PATCH v3 5/6] ethdev: unify MTU checks Ferruh Yigit
2021-10-01 14:36     ` [dpdk-dev] [PATCH v3 6/6] examples/ip_reassembly: remove unused parameter Ferruh Yigit
2021-10-01 15:07     ` [dpdk-dev] [PATCH v3 1/6] ethdev: fix max Rx packet length Stephen Hemminger
2021-10-05 16:46       ` Ferruh Yigit
2021-10-05 17:16     ` [dpdk-dev] [PATCH v4 " Ferruh Yigit
2021-10-05 17:16       ` [dpdk-dev] [PATCH v4 2/6] ethdev: move jumbo frame offload check to library Ferruh Yigit
2021-10-08  8:39         ` Xu, Rosen
2021-10-05 17:16       ` [dpdk-dev] [PATCH v4 3/6] ethdev: move check to library for MTU set Ferruh Yigit
2021-10-05 17:16       ` [dpdk-dev] [PATCH v4 4/6] ethdev: remove jumbo offload flag Ferruh Yigit
2021-10-08  8:38         ` Xu, Rosen
2021-10-05 17:16       ` [dpdk-dev] [PATCH v4 5/6] ethdev: unify MTU checks Ferruh Yigit
2021-10-05 17:16       ` [dpdk-dev] [PATCH v4 6/6] examples/ip_reassembly: remove unused parameter Ferruh Yigit
2021-10-05 22:07       ` [dpdk-dev] [PATCH v4 1/6] ethdev: fix max Rx packet length Ajit Khaparde
2021-10-06  6:08         ` Somnath Kotur
2021-10-08  8:36       ` Xu, Rosen
2021-10-10  6:30       ` Matan Azrad
2021-10-11 21:59         ` Ferruh Yigit
2021-10-12  7:03           ` Matan Azrad
2021-10-12 11:03             ` Ferruh Yigit
2021-10-07 16:56     ` [dpdk-dev] [PATCH v5 " Ferruh Yigit
2021-10-07 16:56       ` [dpdk-dev] [PATCH v5 2/6] ethdev: move jumbo frame offload check to library Ferruh Yigit
2021-10-08 17:20         ` Ananyev, Konstantin
2021-10-09 10:58         ` lihuisong (C)
2021-10-07 16:56       ` [dpdk-dev] [PATCH v5 3/6] ethdev: move check to library for MTU set Ferruh Yigit
2021-10-08 17:19         ` Ananyev, Konstantin
2021-10-07 16:56       ` [dpdk-dev] [PATCH v5 4/6] ethdev: remove jumbo offload flag Ferruh Yigit
2021-10-08 17:11         ` Ananyev, Konstantin
2021-10-09 11:09           ` lihuisong (C)
2021-10-10  5:46         ` Matan Azrad
2021-10-07 16:56       ` [dpdk-dev] [PATCH v5 5/6] ethdev: unify MTU checks Ferruh Yigit
2021-10-08 16:51         ` Ananyev, Konstantin
2021-10-11 19:50           ` Ferruh Yigit
2021-10-09 11:43         ` lihuisong (C)
2021-10-11 20:15           ` Ferruh Yigit
2021-10-12  4:02             ` lihuisong (C)
2021-10-07 16:56       ` [dpdk-dev] [PATCH v5 6/6] examples/ip_reassembly: remove unused parameter Ferruh Yigit
2021-10-08 16:53         ` Ananyev, Konstantin
2021-10-08 15:57       ` [dpdk-dev] [PATCH v5 1/6] ethdev: fix max Rx packet length Ananyev, Konstantin
2021-10-11 19:47         ` Ferruh Yigit
2021-10-09 10:56       ` lihuisong (C) [this message]
2021-10-11 23:53     ` [dpdk-dev] [PATCH v6 " Ferruh Yigit
2021-10-11 23:53       ` [dpdk-dev] [PATCH v6 2/6] ethdev: move jumbo frame offload check to library Ferruh Yigit
2021-10-11 23:53       ` [dpdk-dev] [PATCH v6 3/6] ethdev: move check to library for MTU set Ferruh Yigit
2021-10-11 23:53       ` [dpdk-dev] [PATCH v6 4/6] ethdev: remove jumbo offload flag Ferruh Yigit
2021-10-12 17:20         ` Hyong Youb Kim (hyonkim)
2021-10-13  7:16         ` Michał Krawczyk
2021-10-11 23:53       ` [dpdk-dev] [PATCH v6 5/6] ethdev: unify MTU checks Ferruh Yigit
2021-10-12  5:58         ` Andrew Rybchenko
2021-10-11 23:53       ` [dpdk-dev] [PATCH v6 6/6] examples/ip_reassembly: remove unused parameter Ferruh Yigit
2021-10-12  6:02       ` [dpdk-dev] [PATCH v6 1/6] ethdev: fix max Rx packet length Andrew Rybchenko
2021-10-12  9:42       ` Ananyev, Konstantin
2021-10-13  7:08       ` Xu, Rosen
2021-10-15  1:31       ` Hyong Youb Kim (hyonkim)
2021-10-16  0:24       ` Ferruh Yigit
2021-10-18  8:54         ` Ferruh Yigit
2021-10-18 13:48     ` [dpdk-dev] [PATCH v7 " Ferruh Yigit
2021-10-18 13:48       ` [dpdk-dev] [PATCH v7 2/6] ethdev: move jumbo frame offload check to library Ferruh Yigit
2021-10-18 13:48       ` [dpdk-dev] [PATCH v7 3/6] ethdev: move check to library for MTU set Ferruh Yigit
2021-10-18 13:48       ` [dpdk-dev] [PATCH v7 4/6] ethdev: remove jumbo offload flag Ferruh Yigit
2021-10-21  0:43         ` Thomas Monjalon
2021-10-22 11:25           ` Ferruh Yigit
2021-10-22 11:29             ` Andrew Rybchenko
2021-10-18 13:48       ` [dpdk-dev] [PATCH v7 5/6] ethdev: unify MTU checks Ferruh Yigit
2021-10-18 13:48       ` [dpdk-dev] [PATCH v7 6/6] examples/ip_reassembly: remove unused parameter Ferruh Yigit
2021-10-18 17:31       ` [dpdk-dev] [PATCH v7 1/6] ethdev: fix max Rx packet length Ferruh Yigit
2021-11-05 14:19         ` Xueming(Steven) Li
2021-11-05 14:39           ` Ferruh Yigit

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