From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4A5027461 for ; Sun, 17 Sep 2023 20:08:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A4DA2C433C8; Sun, 17 Sep 2023 20:08:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694981320; bh=hQ/Shi1xM6zOpOqrlot7rf3I0ukxj3BWR4uhr5iDWws=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uecRtRoLDI241ml2LBgu4I71K2lxxEWW0egktZSmBQo929G9AUsMESrKKfbR+T4Us rIQhwrxVKE5lA+ejVq7XTC0JO3zIo7rkNSYhn//uTTb3t6/hBQy3BTfOL9KM4jtF0w 4oEmhhe5K4bezl6Z1jGiXIBMmiPZf9EFPHOr4lfU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Liang Chen , Eric Dumazet , "David S. Miller" , Sasha Levin Subject: [PATCH 6.1 104/219] veth: Fixing transmit return status for dropped packets Date: Sun, 17 Sep 2023 21:13:51 +0200 Message-ID: <20230917191044.756600990@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230917191040.964416434@linuxfoundation.org> References: <20230917191040.964416434@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Liang Chen [ Upstream commit 151e887d8ff97e2e42110ffa1fb1e6a2128fb364 ] The veth_xmit function returns NETDEV_TX_OK even when packets are dropped. This behavior leads to incorrect calculations of statistics counts, as well as things like txq->trans_start updates. Fixes: e314dbdc1c0d ("[NET]: Virtual ethernet device driver.") Signed-off-by: Liang Chen Reviewed-by: Eric Dumazet Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/veth.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 727b9278b9fe5..36c5a41f84e44 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -313,6 +313,7 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev) { struct veth_priv *rcv_priv, *priv = netdev_priv(dev); struct veth_rq *rq = NULL; + int ret = NETDEV_TX_OK; struct net_device *rcv; int length = skb->len; bool use_napi = false; @@ -345,6 +346,7 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev) } else { drop: atomic64_inc(&priv->dropped); + ret = NET_XMIT_DROP; } if (use_napi) @@ -352,7 +354,7 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev) rcu_read_unlock(); - return NETDEV_TX_OK; + return ret; } static u64 veth_stats_tx(struct net_device *dev, u64 *packets, u64 *bytes) -- 2.40.1