From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolas Dichtel Subject: [PATCH net-next v3 0/4] Take care of xfrm policy when checking dst entries Date: Tue, 11 Sep 2012 10:09:43 +0200 Message-ID: <1347350987-8054-1-git-send-email-nicolas.dichtel@6wind.com> References: <504DFF90.3010802@6wind.com> Cc: sri@us.ibm.com, linux-sctp@vger.kernel.org, netdev@vger.kernel.org To: vyasevich@gmail.com, davem@davemloft.net, eric.dumazet@gmail.com, sds@tycho.nsa.gov, james.l.morris@oracle.com, eparis@parisplace.org Return-path: Received: from 33.106-14-84.ripe.coltfrance.com ([84.14.106.33]:39440 "EHLO proxy.6wind.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751646Ab2IKIJd (ORCPT ); Tue, 11 Sep 2012 04:09:33 -0400 In-Reply-To: <504DFF90.3010802@6wind.com> Sender: netdev-owner@vger.kernel.org List-ID: The goal of these patches is to fix the following problem: a session is established (TCP, SCTP) and after a new policy is inserted. The current code does not recalculate the route, thus the traffic is not encrypted. The patch propose to check flow_cache_genid value when checking a dst entry, which is incremented each time a policy is inserted or deleted. v2: use net->ipv4.rt_genid instead of flow_cache_genid (and thus save a test in fast path). Also move it to net->rt_genid, to be able to use it for IPv6 too. Note that IPv6 will have one more test in fast path. v3: remove unrelated "#ifdef CONFIG_XFRM" in IPv6 part bump rt_genid in selinux code (same place than flow_cache_genid) Patches are tested with TCP and SCTP, IPv4 and IPv6. Comments are welcome. Regards, Nicolas