From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 A86743D9DC3; Fri, 3 Jul 2026 14:11:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783087877; cv=none; b=kq867grLRwcdNFg0hQANsRgS8hGl21z5xxw961KgahQWYQoSisVr6p4aTPFQWTtRqSFmm/BnjBfEcz8FuOMDthhr57KbdlfhD+JXeNcdul1LFQFbdTyBg6G1cg/Xk1Eb7fX1IFgK5VmqCtIb3mNuMK6WnH8uRDtA7oZ7npF2o9A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783087877; c=relaxed/simple; bh=UuZFk1wAgKnal2cdjKUpZaRVkD2HZqWsW4xm2olxW2U=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=amKOKkyzDNWvb1Tim/Y/7rQzdBHUlTp6L7jIIfKQ5jVe6zH+6MszeRqi3puWQgXeBX5i6E8D+/CvRA/xgMSdFkTyX+GRDBR8GPNQKvUEZ09g6wDLVF/8/mYUNtyntHVOlUTvYYjbm7+lat+w0s5B9l/DWUq/JYqg2DKYIZgRmgk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mXnBwwxs; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mXnBwwxs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C397F1F000E9; Fri, 3 Jul 2026 14:11:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783087876; bh=IAUTwirOYrRBNSN0XYzeZxsFtflHOKC4jeiz3unHjNM=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=mXnBwwxs353dMZiscJf9xX9sq6J5DKcSwADZdI1boWZrMsebu/6usjhwOq8WJ+GPS f1JPYF+sHYuBiiz49JEASWm/YXOyVelrGK5ZirwNA7tuU5w3AQhjuJEATQhcD7TgxC rnXK89OMOeGpntidbCOWmeg89xtdcHhHG8JsKPfEHZ+3lczw9gtelOHJiPif//BjN6 UuxHxWC24swxLUsc9ce+Lq3f4glQcjP59T7QFV4TCijuItlum8xOyLG5BoxJZK6+cu ZLorHqLHsL4dIA8JeuKKS742HT8iZqKC6lgzNJG9jm89Oj0eVuZc8VhCay5VcN1I2r UvxlsS4pz7dnw== From: Lorenzo Bianconi Date: Fri, 03 Jul 2026 16:10:37 +0200 Subject: [PATCH nf-next v4 2/6] net: netfilter: Add encap_proto to flow_offload_tunnel Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260703-b4-flowtable-sw-accel-ip6ip-v4-2-00398cd12382@kernel.org> References: <20260703-b4-flowtable-sw-accel-ip6ip-v4-0-00398cd12382@kernel.org> In-Reply-To: <20260703-b4-flowtable-sw-accel-ip6ip-v4-0-00398cd12382@kernel.org> To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Felix Fietkau , Matthias Brugger , AngeloGioacchino Del Regno , Simon Horman , David Ahern , Ido Schimmel , Pablo Neira Ayuso , Florian Westphal , Phil Sutter , Shuah Khan , Lorenzo Bianconi Cc: linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, coreteam@netfilter.org, linux-kselftest@vger.kernel.org X-Mailer: b4 0.14.3 Add encap_proto (AF_INET or AF_INET6) to struct flow_offload_tunnel to allow its use as part of the hash table key during flowtable entry lookup. This is a preliminary change to support IPv4 over IPv6 tunneling via the flowtable infrastructure for software acceleration. Signed-off-by: Lorenzo Bianconi --- include/linux/netdevice.h | 1 + include/net/netfilter/nf_flow_table.h | 1 + net/ipv4/ipip.c | 1 + net/ipv6/ip6_tunnel.c | 1 + net/netfilter/nf_flow_table_ip.c | 2 ++ net/netfilter/nf_flow_table_path.c | 2 ++ 6 files changed, 8 insertions(+) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index a97aee0e49b2..45d99e11b06e 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -902,6 +902,7 @@ struct net_device_path { }; u8 l3_proto; + u8 encap_proto; } tun; struct { enum { diff --git a/include/net/netfilter/nf_flow_table.h b/include/net/netfilter/nf_flow_table.h index 7b23b245a5a8..4d406801ec90 100644 --- a/include/net/netfilter/nf_flow_table.h +++ b/include/net/netfilter/nf_flow_table.h @@ -118,6 +118,7 @@ struct flow_offload_tunnel { }; u8 l3_proto; + u8 encap_proto; }; struct flow_offload_tuple { diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c index b643194f57d2..9f7b2bdabef0 100644 --- a/net/ipv4/ipip.c +++ b/net/ipv4/ipip.c @@ -369,6 +369,7 @@ static int ipip_fill_forward_path(struct net_device_path_ctx *ctx, path->tun.src_v4.s_addr = tiph->saddr; path->tun.dst_v4.s_addr = tiph->daddr; path->tun.l3_proto = IPPROTO_IPIP; + path->tun.encap_proto = AF_INET; path->dev = ctx->dev; ctx->dev = rt->dst.dev; diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 38da07101601..a121f715afd2 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1863,6 +1863,7 @@ static int ip6_tnl_fill_forward_path(struct net_device_path_ctx *ctx, path->type = DEV_PATH_TUN; path->tun.src_v6 = t->parms.laddr; path->tun.dst_v6 = t->parms.raddr; + path->tun.encap_proto = AF_INET6; if (ctx->ether_type == cpu_to_be16(ETH_P_IP)) path->tun.l3_proto = IPPROTO_IPIP; else diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c index 29e93ac1e2e4..cf2c74e3fd56 100644 --- a/net/netfilter/nf_flow_table_ip.c +++ b/net/netfilter/nf_flow_table_ip.c @@ -198,6 +198,7 @@ static void nf_flow_tuple_encap(struct nf_flowtable_ctx *ctx, tuple->tun.dst_v4.s_addr = iph->daddr; tuple->tun.src_v4.s_addr = iph->saddr; tuple->tun.l3_proto = IPPROTO_IPIP; + tuple->tun.encap_proto = AF_INET; } break; case htons(ETH_P_IPV6): @@ -206,6 +207,7 @@ static void nf_flow_tuple_encap(struct nf_flowtable_ctx *ctx, tuple->tun.dst_v6 = ip6h->daddr; tuple->tun.src_v6 = ip6h->saddr; tuple->tun.l3_proto = IPPROTO_IPV6; + tuple->tun.encap_proto = AF_INET6; } break; default: diff --git a/net/netfilter/nf_flow_table_path.c b/net/netfilter/nf_flow_table_path.c index c8011ec36532..caaf48c5fd2a 100644 --- a/net/netfilter/nf_flow_table_path.c +++ b/net/netfilter/nf_flow_table_path.c @@ -129,6 +129,7 @@ static int nft_dev_path_info(const struct net_device_path_stack *stack, info->tun.src_v6 = path->tun.src_v6; info->tun.dst_v6 = path->tun.dst_v6; info->tun.l3_proto = path->tun.l3_proto; + info->tun.encap_proto = path->tun.encap_proto; info->num_tuns++; } else { if (info->num_encaps >= NF_FLOW_TABLE_ENCAP_MAX) @@ -278,6 +279,7 @@ static int nft_dev_forward_path(const struct nft_pktinfo *pkt, route->tuple[!dir].in.tun.src_v6 = info.tun.dst_v6; route->tuple[!dir].in.tun.dst_v6 = info.tun.src_v6; route->tuple[!dir].in.tun.l3_proto = info.tun.l3_proto; + route->tuple[!dir].in.tun.encap_proto = info.tun.encap_proto; route->tuple[!dir].in.num_tuns = info.num_tuns; } -- 2.55.0