From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Mack Subject: [PATCH RFC 5/7] net: tcp_ipv6, udp_ipv6: hook up LOCAL_SOCKET_IN netfilter chains Date: Tue, 29 Sep 2015 13:12:18 +0200 Message-ID: <1443525140-13493-6-git-send-email-daniel@zonque.org> References: <1443525140-13493-1-git-send-email-daniel@zonque.org> Cc: daniel@iogearbox.net, netfilter-devel@vger.kernel.org, netdev@vger.kernel.org, fw@strlen.de, balazs.scheidler@balabit.com, Daniel Mack To: pablo@netfilter.org Return-path: Received: from svenfoo.org ([82.94.215.22]:60185 "EHLO mail.zonque.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934694AbbI2LMj (ORCPT ); Tue, 29 Sep 2015 07:12:39 -0400 In-Reply-To: <1443525140-13493-1-git-send-email-daniel@zonque.org> Sender: netfilter-devel-owner@vger.kernel.org List-ID: Run the NF_INET_LOCAL_SOCKET_IN netfilter chain rules after the destination socket for IPv6 unicast and multicast ports have been looked up. Signed-off-by: Daniel Mack --- net/ipv6/netfilter/nf_tables_ipv6.c | 14 ++++++++------ net/ipv6/tcp_ipv6.c | 8 ++++++++ net/ipv6/udp.c | 9 +++++++++ 3 files changed, 25 insertions(+), 6 deletions(-) diff --git a/net/ipv6/netfilter/nf_tables_ipv6.c b/net/ipv6/netfilter/nf_tables_ipv6.c index c8148ba..53c7923 100644 --- a/net/ipv6/netfilter/nf_tables_ipv6.c +++ b/net/ipv6/netfilter/nf_tables_ipv6.c @@ -49,11 +49,12 @@ struct nft_af_info nft_af_ipv6 __read_mostly = { .owner = THIS_MODULE, .nops = 1, .hooks = { - [NF_INET_LOCAL_IN] = nft_do_chain_ipv6, - [NF_INET_LOCAL_OUT] = nft_ipv6_output, - [NF_INET_FORWARD] = nft_do_chain_ipv6, - [NF_INET_PRE_ROUTING] = nft_do_chain_ipv6, - [NF_INET_POST_ROUTING] = nft_do_chain_ipv6, + [NF_INET_LOCAL_IN] = nft_do_chain_ipv6, + [NF_INET_LOCAL_OUT] = nft_ipv6_output, + [NF_INET_FORWARD] = nft_do_chain_ipv6, + [NF_INET_PRE_ROUTING] = nft_do_chain_ipv6, + [NF_INET_POST_ROUTING] = nft_do_chain_ipv6, + [NF_INET_LOCAL_SOCKET_IN] = nft_do_chain_ipv6, }, }; EXPORT_SYMBOL_GPL(nft_af_ipv6); @@ -95,7 +96,8 @@ static const struct nf_chain_type filter_ipv6 = { (1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_FORWARD) | (1 << NF_INET_PRE_ROUTING) | - (1 << NF_INET_POST_ROUTING), + (1 << NF_INET_POST_ROUTING) | + (1 << NF_INET_LOCAL_SOCKET_IN), }; static int __init nf_tables_ipv6_init(void) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 97d9314..0b0706d 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -37,6 +37,7 @@ #include #include #include +#include #include #include #include @@ -1392,6 +1393,13 @@ static int tcp_v6_rcv(struct sk_buff *skb) if (!sk) goto no_tcp_socket; + ret = nf_hook(NFPROTO_IPV6, NF_INET_LOCAL_SOCKET_IN, sk, + skb, skb->dev, NULL, NULL); + if (ret != 1) { + sock_put(sk); + return 0; + } + process: if (sk->sk_state == TCP_TIME_WAIT) goto do_time_wait; diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 0aba654..99df081 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -746,7 +747,15 @@ static void flush_stack(struct sock **stack, unsigned int count, unsigned int i; for (i = 0; i < count; i++) { + int ret; + sk = stack[i]; + + ret = nf_hook(NFPROTO_IPV6, NF_INET_LOCAL_SOCKET_IN, sk, + skb, skb->dev, NULL, NULL); + if (ret != 1) + continue; + if (likely(!skb1)) skb1 = (i == final) ? skb : skb_clone(skb, GFP_ATOMIC); if (!skb1) { -- 2.5.0