From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.netfilter.org (mail.netfilter.org [217.70.190.124]) (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 BBDCB34252E; Wed, 26 Nov 2025 20:56:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.190.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764190588; cv=none; b=ZyXCBd182IFNlUBMBPf3eOUyjyfeq8CVtYRconEo+42dDy2M4p51U/s9J9Xlv74qipx8YdM/+ZgMVFeWlKn10IcHCgHiQe176a4OHceA74XZISASF7SfRcmakJRJhn9yzE6YlnUPkJi0clo0qd+0LaAjIwD8fMjlX9E9GCC3yAc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764190588; c=relaxed/simple; bh=QES8e7HGUZkxIHZTMopV8pVGBKSOeFsMo8lOwa/VGcM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=euR1a+z2O7B5CGZaQyslv3VkQDEKg4ggTGnNyI4Mk0HfxgUpEy8ExpLTE2zyCtxhT855UlryaQwetGFRVxLaxyUWas9/RzpgvVA1jK71Au62rdKVk3zawhyvM+2q5FjwRN0+OjKUAeG+mkEv79FDrtiUybM6Thjv4pRkrFOa8i4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=netfilter.org; spf=pass smtp.mailfrom=netfilter.org; dkim=pass (2048-bit key) header.d=netfilter.org header.i=@netfilter.org header.b=ujgJJ05v; arc=none smtp.client-ip=217.70.190.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=netfilter.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=netfilter.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=netfilter.org header.i=@netfilter.org header.b="ujgJJ05v" Received: from localhost.localdomain (mail-agni [217.70.190.124]) by mail.netfilter.org (Postfix) with ESMTPSA id 47DC760275; Wed, 26 Nov 2025 21:56:24 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netfilter.org; s=2025; t=1764190584; bh=DW+UEv8/ZpE0xklYkdZPUjjoeWeQEo+eiUtdlID+Fnw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ujgJJ05v7hiKYtMjQYnbArWd/lnf1+ZGqka2cugPYI+tUrLdPB2STV8fvelwA/ZR1 Sgw2ObRoFs0xYka8r7+HstPPKXzl7I8Ar5wfrLC4oyCB1+2Bzd8qT7fnYRbYENiDPI R5bJpIW4uNrB0laAeMwEPzXfY0vNIO2hGURiPtAWRrFyzKSmtykZ0t25hYRyNamNlU ObyQxmuqaCpJlfn5eb7T25brDUzWlSgy+/rpMBJI+ybEPu98/2phTZR3nnfxnPfYwb u/tngw6N3IeyE5eeHUWUxL3yLX6cbzhoyxNS79Pajg7RISJNuQblhK99/cNbg/hN+q srLEcTldp8WCw== From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, fw@strlen.de, horms@kernel.org Subject: [PATCH net-next 03/16] netfilter: flowtable: inline vlan encapsulation in xmit path Date: Wed, 26 Nov 2025 20:55:58 +0000 Message-ID: <20251126205611.1284486-4-pablo@netfilter.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251126205611.1284486-1-pablo@netfilter.org> References: <20251126205611.1284486-1-pablo@netfilter.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Push the vlan header from the flowtable xmit path, instead of passing the packet to the vlan device. This is based on a patch originally written by wenxu. Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_flow_table_ip.c | 25 +++++++++++++++++++++++++ net/netfilter/nf_flow_table_path.c | 7 ++++--- 2 files changed, 29 insertions(+), 3 deletions(-) diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c index 8b74fb34998e..a4229fb65444 100644 --- a/net/netfilter/nf_flow_table_ip.c +++ b/net/netfilter/nf_flow_table_ip.c @@ -413,6 +413,25 @@ static int nf_flow_offload_forward(struct nf_flowtable_ctx *ctx, return 1; } +static int nf_flow_encap_push(struct sk_buff *skb, + struct flow_offload_tuple *tuple) +{ + int i; + + for (i = 0; i < tuple->encap_num; i++) { + switch (tuple->encap[i].proto) { + case htons(ETH_P_8021Q): + case htons(ETH_P_8021AD): + if (skb_vlan_push(skb, tuple->encap[i].proto, + tuple->encap[i].id) < 0) + return -1; + break; + } + } + + return 0; +} + unsigned int nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb, const struct nf_hook_state *state) @@ -450,6 +469,9 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb, dir = tuplehash->tuple.dir; flow = container_of(tuplehash, struct flow_offload, tuplehash[dir]); + if (nf_flow_encap_push(skb, &flow->tuplehash[!dir].tuple) < 0) + return NF_DROP; + switch (tuplehash->tuple.xmit_type) { case FLOW_OFFLOAD_XMIT_NEIGH: rt = dst_rtable(tuplehash->tuple.dst_cache); @@ -754,6 +776,9 @@ nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb, dir = tuplehash->tuple.dir; flow = container_of(tuplehash, struct flow_offload, tuplehash[dir]); + if (nf_flow_encap_push(skb, &flow->tuplehash[!dir].tuple) < 0) + return NF_DROP; + switch (tuplehash->tuple.xmit_type) { case FLOW_OFFLOAD_XMIT_NEIGH: rt = dst_rt6_info(tuplehash->tuple.dst_cache); diff --git a/net/netfilter/nf_flow_table_path.c b/net/netfilter/nf_flow_table_path.c index 15c042cab9fb..1cb04c3e6dde 100644 --- a/net/netfilter/nf_flow_table_path.c +++ b/net/netfilter/nf_flow_table_path.c @@ -119,13 +119,14 @@ static void nft_dev_path_info(const struct net_device_path_stack *stack, info->indev = NULL; break; } - if (!info->outdev) - info->outdev = path->dev; info->encap[info->num_encaps].id = path->encap.id; info->encap[info->num_encaps].proto = path->encap.proto; info->num_encaps++; - if (path->type == DEV_PATH_PPPOE) + if (path->type == DEV_PATH_PPPOE) { + if (!info->outdev) + info->outdev = path->dev; memcpy(info->h_dest, path->encap.h_dest, ETH_ALEN); + } break; case DEV_PATH_BRIDGE: if (is_zero_ether_addr(info->h_source)) -- 2.47.3