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 CAF03A0A02; Thu, 14 Jan 2021 10:49:28 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 56A3C141053; Thu, 14 Jan 2021 10:49:26 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by mails.dpdk.org (Postfix) with ESMTP id D6A92141050 for ; Thu, 14 Jan 2021 10:49:23 +0100 (CET) IronPort-SDR: xkTeZDjudqW5wZT0LamMF76la31xhw8ugrI8LxjBzIX4KnZOSKP1PBSjxEy56zkAB6nvsiGzs3 ZQRQV3ynhqLQ== X-IronPort-AV: E=McAfee;i="6000,8403,9863"; a="166011153" X-IronPort-AV: E=Sophos;i="5.79,347,1602572400"; d="scan'208";a="166011153" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jan 2021 01:49:23 -0800 IronPort-SDR: CimSYWIn5gLM7y7o1EpzHHkcycOp5YBrD0pldL4kd8BuGskhC7+TXa28mjNdpq2g3LhPvmnlo6 1DnlCk/nhGeg== X-IronPort-AV: E=Sophos;i="5.79,347,1602572400"; d="scan'208";a="572283699" Received: from intel-npg-odc-srv01.cd.intel.com ([10.240.178.136]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jan 2021 01:49:21 -0800 From: Steve Yang To: dev@dpdk.org Cc: jia.guo@intel.com, haiyue.wang@intel.com, Steve Yang Date: Thu, 14 Jan 2021 09:46:10 +0000 Message-Id: <20210114094610.13851-1-stevex.yang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201217092312.27033-1-stevex.yang@intel.com> References: <20201217092312.27033-1-stevex.yang@intel.com> Subject: [dpdk-dev] [PATCH v3 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") 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