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From: Nithin Dabilpuram <ndabilpuram@marvell.com>
To: Nithin Dabilpuram <ndabilpuram@marvell.com>,
	Kiran Kumar K <kirankumark@marvell.com>,
	Sunil Kumar Kori <skori@marvell.com>,
	Satha Rao <skoteshwar@marvell.com>
Cc: <dev@dpdk.org>, <stable@dpdk.org>
Subject: [PATCH v4 08/14] net/cnxk: fix max MTU limit
Date: Thu, 22 Feb 2024 16:32:26 +0530	[thread overview]
Message-ID: <20240222110232.2342903-8-ndabilpuram@marvell.com> (raw)
In-Reply-To: <20240222110232.2342903-1-ndabilpuram@marvell.com>

From: Sunil Kumar Kori <skori@marvell.com>

Device can support maximum frame size up to 9212 bytes. While configuring
mtu, overhead is considered as ethernet header size, crc and
2 * (vlan tags) which translates to 26 bytes.

Exposed overhead to the user via rte_eth_dev_info() is 18 bytes which were
leading to set wrong Rx frame size.

Fixes: 8589ec212e80 ("net/cnxk: support MTU set")
Cc: stable@dpdk.org

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
---
 drivers/net/cnxk/cnxk_ethdev_ops.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/cnxk/cnxk_ethdev_ops.c b/drivers/net/cnxk/cnxk_ethdev_ops.c
index 4962f3bced..56049c5dd2 100644
--- a/drivers/net/cnxk/cnxk_ethdev_ops.c
+++ b/drivers/net/cnxk/cnxk_ethdev_ops.c
@@ -20,8 +20,7 @@ cnxk_nix_info_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *devinfo)
 	devinfo->max_tx_queues = RTE_MAX_QUEUES_PER_PORT;
 	devinfo->max_mac_addrs = dev->max_mac_entries;
 	devinfo->max_vfs = pci_dev->max_vfs;
-	devinfo->max_mtu = devinfo->max_rx_pktlen -
-				(RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN);
+	devinfo->max_mtu = devinfo->max_rx_pktlen - CNXK_NIX_L2_OVERHEAD;
 	devinfo->min_mtu = devinfo->min_rx_bufsize - CNXK_NIX_L2_OVERHEAD;
 
 	devinfo->rx_offload_capa = dev->rx_offload_capa;
-- 
2.25.1


  parent reply	other threads:[~2024-02-22 11:08 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-08  8:59 [PATCH 01/13] common/cnxk: remove cn9k Inline IPsec FP opcode defines Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 02/13] net/cnxk: add IPsec SA defines for PMD API Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 03/13] net/cnxk: add transport mode to security capability on cn9k Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 04/13] common/cnxk: dump selected SQ entries Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 05/13] net/cnxk: added Tx descriptor dump API Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 06/13] net/cnxk: fix issue with buff size compute Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 07/13] common/cnxk: skip setting Tx MTU separately Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 08/13] net/cnxk: fix max MTU limit Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 09/13] common/cnxk: update queue entries copy in RETA table Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 10/13] net/cnxk: fix indirect mbuf handling in Tx path Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 11/13] net/cnxk: fix check cookies for multi-seg offload Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 12/13] common/cnxk: add IO attribute to mbox structs Nithin Dabilpuram
2024-02-08  8:59 ` [PATCH 13/13] common/cnxk: use SQ enable and disable API Nithin Dabilpuram
2024-02-09  9:28   ` Jerin Jacob
2024-02-22 11:02 ` [PATCH v4 01/14] common/cnxk: remove cn9k Inline IPsec FP opcode defines Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 02/14] net/cnxk: add IPsec SA defines for PMD API Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 03/14] net/cnxk: add transport mode to security capability on cn9k Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 04/14] common/cnxk: dump selected SQ entries Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 05/14] net/cnxk: added Tx descriptor dump API Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 06/14] net/cnxk: fix issue with buff size compute Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 07/14] common/cnxk: skip setting Tx MTU separately Nithin Dabilpuram
2024-02-22 11:02   ` Nithin Dabilpuram [this message]
2024-02-22 11:02   ` [PATCH v4 09/14] common/cnxk: update queue entries copy in RETA table Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 10/14] net/cnxk: fix indirect mbuf handling in Tx path Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 11/14] net/cnxk: fix check cookies for multi-seg offload Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 12/14] common/cnxk: add IO attribute to mbox structs Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 13/14] common/cnxk: use SQ enable and disable API Nithin Dabilpuram
2024-02-22 11:02   ` [PATCH v4 14/14] net/cnxk: reset mbuf fields in multi-seg Tx path Nithin Dabilpuram
2024-02-26 13:35 ` [PATCH v5 01/14] common/cnxk: remove cn9k Inline IPsec FP opcode defines Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 02/14] net/cnxk: add IPsec SA defines for PMD API Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 03/14] net/cnxk: add transport mode to security capability on cn9k Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 04/14] common/cnxk: dump selected SQ entries Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 05/14] net/cnxk: added Tx descriptor dump API Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 06/14] net/cnxk: fix issue with buff size compute Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 07/14] common/cnxk: fix Tx MTU configuration Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 08/14] net/cnxk: fix max MTU limit Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 09/14] common/cnxk: fix RETA table config API Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 10/14] net/cnxk: fix indirect mbuf handling in Tx path Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 11/14] net/cnxk: fix check cookies for multi-seg offload Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 12/14] common/cnxk: fix mbox struct attributes Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 13/14] common/cnxk: use SQ enable and disable API Nithin Dabilpuram
2024-02-26 13:35   ` [PATCH v5 14/14] net/cnxk: fix mbuf fields in multi-seg Tx path Nithin Dabilpuram
2024-02-29 18:23     ` Jerin Jacob

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