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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 49580C2BB1D for ; Wed, 18 Mar 2020 00:40:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2160F20663 for ; Wed, 18 Mar 2020 00:40:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727364AbgCRAkY (ORCPT ); Tue, 17 Mar 2020 20:40:24 -0400 Received: from correo.us.es ([193.147.175.20]:45596 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727301AbgCRAkW (ORCPT ); Tue, 17 Mar 2020 20:40:22 -0400 Received: from antivirus1-rhel7.int (unknown [192.168.2.11]) by mail.us.es (Postfix) with ESMTP id C666A27F8C6 for ; Wed, 18 Mar 2020 01:39:47 +0100 (CET) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id B7BE3DA3A4 for ; Wed, 18 Mar 2020 01:39:47 +0100 (CET) Received: by antivirus1-rhel7.int (Postfix, from userid 99) id AD77CDA390; Wed, 18 Mar 2020 01:39:47 +0100 (CET) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id C8348DA390; Wed, 18 Mar 2020 01:39:45 +0100 (CET) Received: from 192.168.1.97 (192.168.1.97) by antivirus1-rhel7.int (F-Secure/fsigk_smtp/550/antivirus1-rhel7.int); Wed, 18 Mar 2020 01:39:45 +0100 (CET) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/antivirus1-rhel7.int) Received: from salvia.here (unknown [90.77.255.23]) (Authenticated sender: pneira@us.es) by entrada.int (Postfix) with ESMTPA id A131A426CCB9; Wed, 18 Mar 2020 01:39:45 +0100 (CET) X-SMTPAUTHUS: auth mail.us.es From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Cc: davem@davemloft.net, netdev@vger.kernel.org Subject: [PATCH 13/29] netfilter: flowtable: add tunnel match offload support Date: Wed, 18 Mar 2020 01:39:40 +0100 Message-Id: <20200318003956.73573-14-pablo@netfilter.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20200318003956.73573-1-pablo@netfilter.org> References: <20200318003956.73573-1-pablo@netfilter.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: wenxu This patch support both ipv4 and ipv6 tunnel_id, tunnel_src and tunnel_dst match for flowtable offload Signed-off-by: wenxu Signed-off-by: Pablo Neira Ayuso --- include/net/netfilter/nf_flow_table.h | 6 ++++ net/netfilter/nf_flow_table_offload.c | 61 +++++++++++++++++++++++++++++++++-- 2 files changed, 65 insertions(+), 2 deletions(-) diff --git a/include/net/netfilter/nf_flow_table.h b/include/net/netfilter/nf_flow_table.h index 6890f1ca3e31..f523ea87b6ae 100644 --- a/include/net/netfilter/nf_flow_table.h +++ b/include/net/netfilter/nf_flow_table.h @@ -19,11 +19,17 @@ enum flow_offload_tuple_dir; struct nf_flow_key { struct flow_dissector_key_meta meta; struct flow_dissector_key_control control; + struct flow_dissector_key_control enc_control; struct flow_dissector_key_basic basic; union { struct flow_dissector_key_ipv4_addrs ipv4; struct flow_dissector_key_ipv6_addrs ipv6; }; + struct flow_dissector_key_keyid enc_key_id; + union { + struct flow_dissector_key_ipv4_addrs enc_ipv4; + struct flow_dissector_key_ipv6_addrs enc_ipv6; + }; struct flow_dissector_key_tcp tcp; struct flow_dissector_key_ports tp; } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ diff --git a/net/netfilter/nf_flow_table_offload.c b/net/netfilter/nf_flow_table_offload.c index f60f01e929b8..3101b35eac80 100644 --- a/net/netfilter/nf_flow_table_offload.c +++ b/net/netfilter/nf_flow_table_offload.c @@ -28,11 +28,61 @@ struct flow_offload_work { (__match)->dissector.offset[__type] = \ offsetof(struct nf_flow_key, __field) +static void nf_flow_rule_lwt_match(struct nf_flow_match *match, + struct ip_tunnel_info *tun_info) +{ + struct nf_flow_key *mask = &match->mask; + struct nf_flow_key *key = &match->key; + unsigned int enc_keys; + + if (!tun_info || !(tun_info->mode & IP_TUNNEL_INFO_TX)) + return; + + NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_ENC_CONTROL, enc_control); + NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id); + key->enc_key_id.keyid = tunnel_id_to_key32(tun_info->key.tun_id); + mask->enc_key_id.keyid = 0xffffffff; + enc_keys = BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | + BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL); + + if (ip_tunnel_info_af(tun_info) == AF_INET) { + NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, + enc_ipv4); + key->enc_ipv4.src = tun_info->key.u.ipv4.dst; + key->enc_ipv4.dst = tun_info->key.u.ipv4.src; + if (key->enc_ipv4.src) + mask->enc_ipv4.src = 0xffffffff; + if (key->enc_ipv4.dst) + mask->enc_ipv4.dst = 0xffffffff; + enc_keys |= BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS); + key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; + } else { + memcpy(&key->enc_ipv6.src, &tun_info->key.u.ipv6.dst, + sizeof(struct in6_addr)); + memcpy(&key->enc_ipv6.dst, &tun_info->key.u.ipv6.src, + sizeof(struct in6_addr)); + if (memcmp(&key->enc_ipv6.src, &in6addr_any, + sizeof(struct in6_addr))) + memset(&key->enc_ipv6.src, 0xff, + sizeof(struct in6_addr)); + if (memcmp(&key->enc_ipv6.dst, &in6addr_any, + sizeof(struct in6_addr))) + memset(&key->enc_ipv6.dst, 0xff, + sizeof(struct in6_addr)); + enc_keys |= BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS); + key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; + } + + match->dissector.used_keys |= enc_keys; +} + static int nf_flow_rule_match(struct nf_flow_match *match, - const struct flow_offload_tuple *tuple) + const struct flow_offload_tuple *tuple, + struct dst_entry *other_dst) { struct nf_flow_key *mask = &match->mask; struct nf_flow_key *key = &match->key; + struct ip_tunnel_info *tun_info; NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_META, meta); NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_CONTROL, control); @@ -42,6 +92,11 @@ static int nf_flow_rule_match(struct nf_flow_match *match, NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_TCP, tcp); NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_PORTS, tp); + if (other_dst->lwtstate) { + tun_info = lwt_tun_info(other_dst->lwtstate); + nf_flow_rule_lwt_match(match, tun_info); + } + key->meta.ingress_ifindex = tuple->iifidx; mask->meta.ingress_ifindex = 0xffffffff; @@ -480,6 +535,7 @@ nf_flow_offload_rule_alloc(struct net *net, const struct flow_offload *flow = offload->flow; const struct flow_offload_tuple *tuple; struct nf_flow_rule *flow_rule; + struct dst_entry *other_dst; int err = -ENOMEM; flow_rule = kzalloc(sizeof(*flow_rule), GFP_KERNEL); @@ -495,7 +551,8 @@ nf_flow_offload_rule_alloc(struct net *net, flow_rule->rule->match.key = &flow_rule->match.key; tuple = &flow->tuplehash[dir].tuple; - err = nf_flow_rule_match(&flow_rule->match, tuple); + other_dst = flow->tuplehash[!dir].tuple.dst_cache; + err = nf_flow_rule_match(&flow_rule->match, tuple, other_dst); if (err < 0) goto err_flow_match; -- 2.11.0