From patchwork Sat Nov 16 07:49:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: wenxu X-Patchwork-Id: 1196066 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 47FS6M5JnBz9sP6 for ; Sat, 16 Nov 2019 18:49:31 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727282AbfKPHt3 (ORCPT ); Sat, 16 Nov 2019 02:49:29 -0500 Received: from m9784.mail.qiye.163.com ([220.181.97.84]:57394 "EHLO m9784.mail.qiye.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727139AbfKPHt2 (ORCPT ); Sat, 16 Nov 2019 02:49:28 -0500 Received: from localhost.localdomain (unknown [123.59.132.129]) by m9784.mail.qiye.163.com (Hmail) with ESMTPA id A058F4162F; Sat, 16 Nov 2019 15:49:24 +0800 (CST) From: wenxu@ucloud.cn To: pablo@netfilter.org Cc: netfilter-devel@vger.kernel.org Subject: [PATCH nf-next v2 3/4] netfilter: nft_tunnel: support NFT_TUNNEL_IPV6_SRC/DST match Date: Sat, 16 Nov 2019 15:49:23 +0800 Message-Id: <1573890564-16500-4-git-send-email-wenxu@ucloud.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1573890564-16500-1-git-send-email-wenxu@ucloud.cn> References: <1573890564-16500-1-git-send-email-wenxu@ucloud.cn> X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgYFAkeWUFZVkpVSkhOS0tLSktCTUxJTk5ZV1koWU FJQjdXWS1ZQUlXWQkOFx4IWUFZNTQpNjo3JCkuNz5ZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Okk6LSo4Kzg8AwoSDwETPzcB ElEwCxpVSlVKTkxIQ0JLTk1PTEhNVTMWGhIXVQweFQMOOw4YFxQOH1UYFUVZV1kSC1lBWUpJSFVO QlVKSElVSklCWVdZCAFZQUhPS0g3Bg++ X-HM-Tid: 0a6e733022392086kuqya058f4162f Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org From: wenxu Add new two NFT_TUNNEL_IPV6_SRC/DST match in nft_tunnel Signed-off-by: wenxu --- v2: add nft_tunnel_mode_match_ip6 include/uapi/linux/netfilter/nf_tables.h | 2 ++ net/netfilter/nft_tunnel.c | 36 ++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+) diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index 1621d72..d067ee7 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -1779,6 +1779,8 @@ enum nft_tunnel_keys { NFT_TUNNEL_ID, NFT_TUNNEL_IPV4_SRC, NFT_TUNNEL_IPV4_DST, + NFT_TUNNEL_IPV6_SRC, + NFT_TUNNEL_IPV6_DST, __NFT_TUNNEL_MAX }; #define NFT_TUNNEL_MAX (__NFT_TUNNEL_MAX - 1) diff --git a/net/netfilter/nft_tunnel.c b/net/netfilter/nft_tunnel.c index 67f7718..943a704 100644 --- a/net/netfilter/nft_tunnel.c +++ b/net/netfilter/nft_tunnel.c @@ -41,6 +41,16 @@ static bool nft_tunnel_mode_match_ip(enum nft_tunnel_mode priv_mode, return false; } +static bool nft_tunnel_mode_match_ip6(enum nft_tunnel_mode priv_mode, + struct ip_tunnel_info *tun_info) +{ + if (nft_tunnel_mode_match(priv_mode, tun_info->mode) && + ip_tunnel_info_af(tun_info) == AF_INET6) + return true; + + return false; +} + static void nft_tunnel_get_eval(const struct nft_expr *expr, struct nft_regs *regs, const struct nft_pktinfo *pkt) @@ -90,6 +100,28 @@ static void nft_tunnel_get_eval(const struct nft_expr *expr, else regs->verdict.code = NFT_BREAK; break; + case NFT_TUNNEL_IPV6_SRC: + if (!tun_info) { + regs->verdict.code = NFT_BREAK; + return; + } + if (nft_tunnel_mode_match_ip6(priv->mode, tun_info)) + memcpy(dest, &tun_info->key.u.ipv6.src, + sizeof(struct in6_addr)); + else + regs->verdict.code = NFT_BREAK; + break; + case NFT_TUNNEL_IPV6_DST: + if (!tun_info) { + regs->verdict.code = NFT_BREAK; + return; + } + if (nft_tunnel_mode_match_ip6(priv->mode, tun_info)) + memcpy(dest, &tun_info->key.u.ipv6.dst, + sizeof(struct in6_addr)); + else + regs->verdict.code = NFT_BREAK; + break; default: WARN_ON(1); regs->verdict.code = NFT_BREAK; @@ -123,6 +155,10 @@ static int nft_tunnel_get_init(const struct nft_ctx *ctx, case NFT_TUNNEL_IPV4_DST: len = sizeof(u32); break; + case NFT_TUNNEL_IPV6_SRC: + case NFT_TUNNEL_IPV6_DST: + len = sizeof(struct in6_addr); + break; default: return -EOPNOTSUPP; }