From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <wei.zhao1@intel.com>
Received: from mga06.intel.com (mga06.intel.com [134.134.136.31])
by dpdk.org (Postfix) with ESMTP id 395712BA4;
Thu, 1 Nov 2018 09:40:26 +0100 (CET)
X-Amp-Result: SKIPPED(no attachment in message)
X-Amp-File-Uploaded: False
Received: from fmsmga005.fm.intel.com ([10.253.24.32])
by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;
01 Nov 2018 01:40:25 -0700
X-ExtLoop1: 1
X-IronPort-AV: E=Sophos;i="5.54,451,1534834800"; d="scan'208";a="276229890"
Received: from pgsmsx112.gar.corp.intel.com ([10.108.55.201])
by fmsmga005.fm.intel.com with ESMTP; 01 Nov 2018 01:40:23 -0700
Received: from pgsmsx103.gar.corp.intel.com ([169.254.2.114]) by
PGSMSX112.gar.corp.intel.com ([169.254.3.221]) with mapi id 14.03.0415.000;
Thu, 1 Nov 2018 16:40:22 +0800
From: "Zhao1, Wei" <wei.zhao1@intel.com>
To: "dev@dpdk.org" <dev@dpdk.org>
CC: "stable@dpdk.org" <stable@dpdk.org>, "Zhang, Qi Z" <qi.z.zhang@intel.com>,
"yamashita.hideyuki@po.ntt-tx.co.jp" <yamashita.hideyuki@po.ntt-tx.co.jp>,
"stephen@networkplumber.org" <stephen@networkplumber.org>
Thread-Topic: [PATCH v2] net/ixgbe: check jumbo frame enable parameter
Thread-Index: AQHUcb3W/qYxadOQX02MFco/LHKuf6U6mG/w
Date: Thu, 1 Nov 2018 08:40:21 +0000
Message-ID: <A2573D2ACFCADC41BB3BE09C6DE313CA07E683D3@PGSMSX103.gar.corp.intel.com>
References: <1541058926-3576-1-git-send-email-wei.zhao1@intel.com>
<1541060916-39754-1-git-send-email-wei.zhao1@intel.com>
In-Reply-To: <1541060916-39754-1-git-send-email-wei.zhao1@intel.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
dlp-product: dlpe-windows
dlp-version: 11.0.400.15
dlp-reaction: no-action
x-originating-ip: [172.30.20.206]
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Subject: Re: [dpdk-dev] [PATCH v2] net/ixgbe: check jumbo frame enable
parameter
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/dev>,
<mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/dev>,
<mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Thu, 01 Nov 2018 08:40:26 -0000
Add the background for this patch.
https://mails.dpdk.org/archives/dev/2018-November/117771.html
https://mails.dpdk.org/archives/dev/2018-November/117772.html
> -----Original Message-----
> From: Zhao1, Wei
> Sent: Thursday, November 1, 2018 4:29 PM
> To: Zhao1, Wei <wei.zhao1@intel.com>; dev@dpdk.org
> Cc: stable@dpdk.org; Zhang, Qi Z <qi.z.zhang@intel.com>;
> yamashita.hideyuki@po.ntt-tx.co.jp; stephen@networkplumber.org
> Subject: [PATCH v2] net/ixgbe: check jumbo frame enable parameter
>=20
> There is necessary to do some check of max packet size boundary for code
> safe in order to avoid error in register setting when enable jumbo.
>=20
> Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
>=20
> ---
>=20
> v2:
> -add more log infomation and fix build issue
> ---
> drivers/net/ixgbe/ixgbe_ethdev.c | 4 +---
> drivers/net/ixgbe/ixgbe_ethdev.h | 2 ++
> drivers/net/ixgbe/ixgbe_rxtx.c | 31
> +++++++++++++++++++++++++++++++
> 3 files changed, 34 insertions(+), 3 deletions(-)
>=20
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c
> b/drivers/net/ixgbe/ixgbe_ethdev.c
> index 5a2c351..d65a911 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -173,8 +173,6 @@ static int
> ixgbe_dev_queue_stats_mapping_set(struct rte_eth_dev *eth_dev,
> uint8_t is_rx);
> static int ixgbe_fw_version_get(struct rte_eth_dev *dev, char *fw_versio=
n,
> size_t fw_size);
> -static void ixgbe_dev_info_get(struct rte_eth_dev *dev,
> - struct rte_eth_dev_info *dev_info);
> static const uint32_t *ixgbe_dev_supported_ptypes_get(struct
> rte_eth_dev *dev); static void ixgbevf_dev_info_get(struct rte_eth_dev
> *dev,
> struct rte_eth_dev_info *dev_info); @@ -
> 3692,7 +3690,7 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused
> struct rte_eth_dev *dev,
> return 0;
> }
>=20
> -static void
> +void
> ixgbe_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info
> *dev_info) {
> struct rte_pci_device *pci_dev =3D RTE_ETH_DEV_TO_PCI(dev); diff --
> git a/drivers/net/ixgbe/ixgbe_ethdev.h b/drivers/net/ixgbe/ixgbe_ethdev.h
> index d0b9396..a474be4 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.h
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.h
> @@ -727,6 +727,8 @@ int ixgbe_action_rss_same(const struct
> rte_flow_action_rss *comp,
> const struct rte_flow_action_rss *with); int
> ixgbe_config_rss_filter(struct rte_eth_dev *dev,
> struct ixgbe_rte_flow_rss_conf *conf, bool add);
> +void ixgbe_dev_info_get(struct rte_eth_dev *dev,
> + struct rte_eth_dev_info *dev_info);
>=20
> static inline int
> ixgbe_ethertype_filter_lookup(struct ixgbe_filter_info *filter_info, dif=
f --git
> a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c index
> 2f0262a..94051ca 100644
> --- a/drivers/net/ixgbe/ixgbe_rxtx.c
> +++ b/drivers/net/ixgbe/ixgbe_rxtx.c
> @@ -4814,6 +4814,34 @@ void __attribute__((cold))
> return 0;
> }
>=20
> +static int __attribute__((cold))
> +ixgbe_dev_jumboenable_check(struct rte_eth_dev *dev,
> + uint16_t max_rx_pkt_len)
> +{
> + struct rte_eth_dev_info dev_info;
> +
> + ixgbe_dev_info_get(dev, &dev_info);
> +
> + /* check that max packet size is within the allowed range */
> + if (max_rx_pkt_len < ETHER_MIN_MTU) {
> + PMD_INIT_LOG(ERR, "max packet size is too small.");
> + return -EINVAL;
> + }
> +
> + if (max_rx_pkt_len > dev_info.max_rx_pktlen) {
> + PMD_INIT_LOG(ERR, "max packet size is too big.");
> + return -EINVAL;
> + }
> +
> + /* check jumbo mode if needed */
> + if (max_rx_pkt_len < ETHER_MAX_LEN) {
> + PMD_INIT_LOG(ERR, "No need to enable jumbo.");
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> /*
> * Initializes Receive Unit.
> */
> @@ -4865,6 +4893,9 @@ int __attribute__((cold))
> * Configure jumbo frame support, if any.
> */
> if (rx_conf->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
> + if (ixgbe_dev_jumboenable_check(dev, rx_conf-
> >max_rx_pkt_len))
> + return -EINVAL;
> +
> hlreg0 |=3D IXGBE_HLREG0_JUMBOEN;
> maxfrs =3D IXGBE_READ_REG(hw, IXGBE_MAXFRS);
> maxfrs &=3D 0x0000FFFF;
> --
> 1.8.3.1