From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE8EAC433E1 for ; Mon, 8 Jun 2020 23:54:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 89DB120737 for ; Mon, 8 Jun 2020 23:54:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591660461; bh=nXchnZb0VQVMifgHuWErdeP223POR9zgseAnk9BTKs8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=r7sp+b/LG5k/7a76atJ8R4UzMaF/SGyNrFwueP9q+IbQ0Kxm4z3sRUfw76uZiu4nI egWcy7m0JHiU+mxGo0+1RAK+EESIvXWYVAPT2i7FWW3f5WrUztS7ARSz/ROPipYhEy fIsEEj0K6ytQC+fG3f76sxZOOTxTMWdurkSxVwrY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732157AbgFHXyD (ORCPT ); Mon, 8 Jun 2020 19:54:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:50254 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387503AbgFHXYS (ORCPT ); Mon, 8 Jun 2020 19:24:18 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3FE9620C56; Mon, 8 Jun 2020 23:24:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591658658; bh=nXchnZb0VQVMifgHuWErdeP223POR9zgseAnk9BTKs8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D2U7mW06FVe6UmYNcnx9rEndibkhVc+CC+c8l07TvjEBMtFyUpCURunBYYVT5f8Ox AXYuWf6BZAj7+LlDqbd1ekBYW1AKh4VYcEL70Vk/xyoxfdHEl0F0fn9ii5nOPLiRjl IL8ePWBQVgkmqiyX2vjlBuzMevMImtagYQSvPzhc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Erez Shitrit , Alex Vesker , Saeed Mahameed , Sasha Levin , netdev@vger.kernel.org, linux-rdma@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 075/106] net/mlx5e: IPoIB, Drop multicast packets that this interface sent Date: Mon, 8 Jun 2020 19:22:07 -0400 Message-Id: <20200608232238.3368589-75-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200608232238.3368589-1-sashal@kernel.org> References: <20200608232238.3368589-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Erez Shitrit [ Upstream commit 8b46d424a743ddfef8056d5167f13ee7ebd1dcad ] After enabled loopback packets for IPoIB, we need to drop these packets that this HCA has replicated and came back to the same interface that sent them. Fixes: 4c6c615e3f30 ("net/mlx5e: IPoIB, Add PKEY child interface nic profile") Signed-off-by: Erez Shitrit Reviewed-by: Alex Vesker Signed-off-by: Saeed Mahameed Signed-off-by: Sasha Levin --- drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index 044687a1f27c..9d86e49a7f44 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -1314,6 +1314,7 @@ int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget) #ifdef CONFIG_MLX5_CORE_IPOIB +#define MLX5_IB_GRH_SGID_OFFSET 8 #define MLX5_IB_GRH_DGID_OFFSET 24 #define MLX5_GID_SIZE 16 @@ -1327,6 +1328,7 @@ static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq, struct net_device *netdev; struct mlx5e_priv *priv; char *pseudo_header; + u32 flags_rqpn; u32 qpn; u8 *dgid; u8 g; @@ -1347,7 +1349,8 @@ static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq, priv = mlx5i_epriv(netdev); tstamp = &priv->tstamp; - g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3; + flags_rqpn = be32_to_cpu(cqe->flags_rqpn); + g = (flags_rqpn >> 28) & 3; dgid = skb->data + MLX5_IB_GRH_DGID_OFFSET; if ((!g) || dgid[0] != 0xff) skb->pkt_type = PACKET_HOST; @@ -1356,9 +1359,15 @@ static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq, else skb->pkt_type = PACKET_MULTICAST; - /* TODO: IB/ipoib: Allow mcast packets from other VFs - * 68996a6e760e5c74654723eeb57bf65628ae87f4 + /* Drop packets that this interface sent, ie multicast packets + * that the HCA has replicated. */ + if (g && (qpn == (flags_rqpn & 0xffffff)) && + (memcmp(netdev->dev_addr + 4, skb->data + MLX5_IB_GRH_SGID_OFFSET, + MLX5_GID_SIZE) == 0)) { + skb->dev = NULL; + return; + } skb_pull(skb, MLX5_IB_GRH_BYTES); -- 2.25.1