From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 53E45A0A03; Mon, 18 Jan 2021 08:08:41 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 9700B140D3D; Mon, 18 Jan 2021 08:08:21 +0100 (CET) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by mails.dpdk.org (Postfix) with ESMTP id 740D9140D3D for ; Mon, 18 Jan 2021 08:08:19 +0100 (CET) IronPort-SDR: PJk0EXm3uYbrm4Er0DProcKi+wosC6WLc4rYmlZ9Ek4cCY0cexVABkDLQsH4D84YCtQtIwPmc/ sz554kr5J92g== X-IronPort-AV: E=McAfee;i="6000,8403,9867"; a="197460163" X-IronPort-AV: E=Sophos;i="5.79,355,1602572400"; d="scan'208";a="197460163" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jan 2021 23:08:19 -0800 IronPort-SDR: Gs94saJdkmeuoEdj4fGtGz7KGPxN8Z1pSfB6ycXdRXUrijnmOwc03o1FTdDd9bszPT5eCELR8l tqdaKiCsqZKQ== X-IronPort-AV: E=Sophos;i="5.79,355,1602572400"; d="scan'208";a="355086773" Received: from intel-npg-odc-srv01.cd.intel.com ([10.240.178.136]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jan 2021 23:08:16 -0800 From: Steve Yang To: dev@dpdk.org Cc: Steve Yang , Jeff Guo , Haiyue Wang Date: Mon, 18 Jan 2021 07:04:11 +0000 Message-Id: <20210118070428.36998-6-stevex.yang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210118070428.36998-1-stevex.yang@intel.com> References: <20210114094537.13661-1-stevex.yang@intel.com> <20210118070428.36998-1-stevex.yang@intel.com> Subject: [dpdk-dev] [PATCH v4 05/22] net/e1000: fix the jumbo frame flag condition for mtu set X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition, but the Ether overhead is larger than 18 when it supports VLAN tag. That will cause the jumbo flag rx offload is wrong when MTU size is 'RTE_ETHER_MTU'. This fix will change the boundary condition with 'RTE_ETHER_MTU' and overhead, that perhaps impacts the cases of the jumbo frame related. Fixes: ef990fb56e55 ("net/e1000: convert to new Rx offloads API") Cc: Jeff Guo Cc: Haiyue Wang Acked-by: Jeff Guo Signed-off-by: Steve Yang --- drivers/net/e1000/e1000_ethdev.h | 2 +- drivers/net/e1000/em_ethdev.c | 5 ++--- drivers/net/e1000/igb_ethdev.c | 2 +- 3 files changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/net/e1000/e1000_ethdev.h b/drivers/net/e1000/e1000_ethdev.h index 4755a5f333..3b4d9c3ee6 100644 --- a/drivers/net/e1000/e1000_ethdev.h +++ b/drivers/net/e1000/e1000_ethdev.h @@ -97,7 +97,7 @@ */ #define E1000_ETH_OVERHEAD (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + \ VLAN_TAG_SIZE) - +#define E1000_ETH_MAX_LEN (RTE_ETHER_MTU + E1000_ETH_OVERHEAD) /* * Maximum number of Ring Descriptors. * diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c index 8ee9422bf4..2036c6e917 100644 --- a/drivers/net/e1000/em_ethdev.c +++ b/drivers/net/e1000/em_ethdev.c @@ -1799,8 +1799,7 @@ eth_em_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) if (ret != 0) return ret; - frame_size = mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + - VLAN_TAG_SIZE; + frame_size = mtu + E1000_ETH_OVERHEAD; /* check that mtu is within the allowed range */ if (mtu < RTE_ETHER_MIN_MTU || frame_size > dev_info.max_rx_pktlen) @@ -1816,7 +1815,7 @@ 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 > RTE_ETHER_MAX_LEN) { + if (frame_size > E1000_ETH_MAX_LEN) { dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME; rctl |= E1000_RCTL_LPE; diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c index 647aa8d995..dfe87508c2 100644 --- a/drivers/net/e1000/igb_ethdev.c +++ b/drivers/net/e1000/igb_ethdev.c @@ -4369,7 +4369,7 @@ 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 > RTE_ETHER_MAX_LEN) { + if (frame_size > E1000_ETH_MAX_LEN) { dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME; rctl |= E1000_RCTL_LPE; -- 2.17.1