From patchwork Thu Nov 21 09:54:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: wenxu X-Patchwork-Id: 1198842 X-Patchwork-Delegate: pablo@netfilter.org Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netfilter-devel-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=ucloud.cn Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47JZfB6djQz9sR0 for ; Thu, 21 Nov 2019 20:54:26 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727004AbfKUJyX (ORCPT ); Thu, 21 Nov 2019 04:54:23 -0500 Received: from m9784.mail.qiye.163.com ([220.181.97.84]:49236 "EHLO m9784.mail.qiye.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726980AbfKUJyW (ORCPT ); Thu, 21 Nov 2019 04:54:22 -0500 Received: from localhost.localdomain (unknown [123.59.132.129]) by m9784.mail.qiye.163.com (Hmail) with ESMTPA id F1C0E41CE0; Thu, 21 Nov 2019 17:54:17 +0800 (CST) From: wenxu@ucloud.cn To: pablo@netfilter.org Cc: netfilter-devel@vger.kernel.org Subject: [PATCH nf-next v2 3/4] netfilter: nf_flow_table_offload: add tunnel match offload support Date: Thu, 21 Nov 2019 17:54:15 +0800 Message-Id: <1574330056-5377-4-git-send-email-wenxu@ucloud.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1574330056-5377-1-git-send-email-wenxu@ucloud.cn> References: <1574330056-5377-1-git-send-email-wenxu@ucloud.cn> X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgYFAkeWUFZVklVSk9KS0tLS0hJT0lPQkhZV1koWU FJQjdXWS1ZQUlXWQkOFx4IWUFZNTQpNjo3JCkuNz5ZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6PU06NCo*ODgrIQ8uS0gUCTEt LCsKFEJVSlVKTkxPSEhLS05DSkpOVTMWGhIXVQweFQMOOw4YFxQOH1UYFUVZV1kSC1lBWUpJSFVO QlVKSElVSklCWVdZCAFZQU5NT0M3Bg++ X-HM-Tid: 0a6e8d62450f2086kuqyf1c0e41ce0 Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@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 --- v2: add ecn_control to match outer addr net/netfilter/nf_flow_table_offload.c | 67 +++++++++++++++++++++++++++++++++-- 1 file changed, 65 insertions(+), 2 deletions(-) diff --git a/net/netfilter/nf_flow_table_offload.c b/net/netfilter/nf_flow_table_offload.c index 653866f..656095c 100644 --- a/net/netfilter/nf_flow_table_offload.c +++ b/net/netfilter/nf_flow_table_offload.c @@ -26,10 +26,16 @@ struct flow_offload_work { struct nf_flow_key { 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_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. */ @@ -49,11 +55,61 @@ struct nf_flow_rule { (__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_CONTROL, control); NF_FLOW_DISSECTOR(match, FLOW_DISSECTOR_KEY_BASIC, basic); @@ -61,6 +117,11 @@ 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); + } + switch (tuple->l3proto) { case AF_INET: key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; @@ -468,6 +529,7 @@ int nf_flow_rule_route_ipv6(struct net *net, const struct flow_offload *flow, 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); @@ -483,7 +545,8 @@ int nf_flow_rule_route_ipv6(struct net *net, const struct flow_offload *flow, 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;