From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick McHardy Subject: [NETFILTER 01/04]: Fix routing of REJECT target generated packets in output chain Date: Wed, 10 Jan 2007 08:04:46 +0100 (MET) Message-ID: <20070110070446.13495.72221.sendpatchset@localhost.localdomain> References: <20070110070444.13495.95670.sendpatchset@localhost.localdomain> Cc: netfilter-devel@lists.netfilter.org, Patrick McHardy , davem@davemloft.net Return-path: To: stable@kernel.org In-Reply-To: <20070110070444.13495.95670.sendpatchset@localhost.localdomain> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: netfilter-devel-bounces@lists.netfilter.org Errors-To: netfilter-devel-bounces@lists.netfilter.org List-Id: netfilter-devel.vger.kernel.org [NETFILTER]: Fix routing of REJECT target generated packets in output chain Packets generated by the REJECT target in the output chain have a local destination address and a foreign source address. Make sure not to use the foreign source address for the output route lookup. Signed-off-by: Patrick McHardy --- commit 8d63ea0b410fed5a1d7493fa139592394ad01664 tree 859623f78e85fddaf314ba3d8b6a623fcda8d5bb parent 1edb5a2de7a29144644794208eb63abbca419430 author Patrick McHardy Wed, 10 Jan 2007 05:43:39 +0100 committer Patrick McHardy Wed, 10 Jan 2007 05:43:39 +0100 net/ipv4/netfilter.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-) diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c index e2005c6..0147a18 100644 --- a/net/ipv4/netfilter.c +++ b/net/ipv4/netfilter.c @@ -15,16 +15,19 @@ int ip_route_me_harder(struct sk_buff ** struct flowi fl = {}; struct dst_entry *odst; unsigned int hh_len; + unsigned int type; + type = inet_addr_type(iph->saddr); if (addr_type == RTN_UNSPEC) - addr_type = inet_addr_type(iph->saddr); + addr_type = type; /* some non-standard hacks like ipt_REJECT.c:send_reset() can cause * packets with foreign saddr to appear on the NF_IP_LOCAL_OUT hook. */ if (addr_type == RTN_LOCAL) { fl.nl_u.ip4_u.daddr = iph->daddr; - fl.nl_u.ip4_u.saddr = iph->saddr; + if (type == RTN_LOCAL) + fl.nl_u.ip4_u.saddr = iph->saddr; fl.nl_u.ip4_u.tos = RT_TOS(iph->tos); fl.oif = (*pskb)->sk ? (*pskb)->sk->sk_bound_dev_if : 0; #ifdef CONFIG_IP_ROUTE_FWMARK