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 09FC71C03 for ; Mon, 20 Mar 2023 15:02:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7E57BC433D2; Mon, 20 Mar 2023 15:02:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1679324557; bh=SFBggJYkVHnCEZcZfLMB/8VKkg2NrKqNkLzN9FgAHNk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HqsumxbZCbinR39ALTNewXEYvMpPR427CfTLWKSAn2D4ZQFIsMcF79vLE2cYygEas APPNCXZpDOcuVr+NMCwqeHbkjRDRg73Mt32+pDs4lhB4Y8zMkgZzchqepNSVr1BLS2 bgKDT3XTXkT2K4n+5/WtbdwmgKYQj9xams4z/pbs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jianguo Wu , Jiri Pirko , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.10 17/99] ipvlan: Make skb->skb_iif track skb->dev for l3s mode Date: Mon, 20 Mar 2023 15:53:55 +0100 Message-Id: <20230320145444.087576263@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230320145443.333824603@linuxfoundation.org> References: <20230320145443.333824603@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Jianguo Wu [ Upstream commit 59a0b022aa249e3f5735d93de0849341722c4754 ] For l3s mode, skb->dev is set to ipvlan interface in ipvlan_nf_input(): skb->dev = addr->master->dev but, skb->skb_iif remain unchanged, this will cause socket lookup failed if a target socket is bound to a interface, like the following example: ip link add ipvlan0 link eth0 type ipvlan mode l3s ip addr add dev ipvlan0 192.168.124.111/24 ip link set ipvlan0 up ping -c 1 -I ipvlan0 8.8.8.8 100% packet loss This is because there is no match sk in __raw_v4_lookup() as sk->sk_bound_dev_if != dif(skb->skb_iif). Fix this by make skb->skb_iif track skb->dev in ipvlan_nf_input(). Fixes: c675e06a98a4 ("ipvlan: decouple l3s mode dependencies from other modes") Signed-off-by: Jianguo Wu Reviewed-by: Jiri Pirko Link: https://lore.kernel.org/r/29865b1f-6db7-c07a-de89-949d3721ea30@163.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ipvlan/ipvlan_l3s.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ipvlan/ipvlan_l3s.c b/drivers/net/ipvlan/ipvlan_l3s.c index 943d26cbf39f5..71712ea25403d 100644 --- a/drivers/net/ipvlan/ipvlan_l3s.c +++ b/drivers/net/ipvlan/ipvlan_l3s.c @@ -101,6 +101,7 @@ static unsigned int ipvlan_nf_input(void *priv, struct sk_buff *skb, goto out; skb->dev = addr->master->dev; + skb->skb_iif = skb->dev->ifindex; len = skb->len + ETH_HLEN; ipvlan_count_rx(addr->master, len, true, false); out: -- 2.39.2