From f0396f60d7c165018c9b203fb9b89fb224835578 Mon Sep 17 00:00:00 2001 From: Denis Ovsienko Date: Tue, 10 Jul 2012 04:45:50 +0000 Subject: [PATCH] ipv6: fix RTPROT_RA markup of RA routes w/nexthops Userspace implementations of network routing protocols sometimes need to tell RA-originated IPv6 routes from other kernel routes to make proper routing decisions. This makes most sense for RA routes with nexthops, namely, default routes and Route Information routes. The intended mean of preserving RA route origin in a netlink message is through indicating RTPROT_RA as protocol code. Function rt6_fill_node() tried to do that for default routes, but its test condition was taken wrong. This change is modeled after the original mailing list posting by Jeff Haran. It fixes the test condition for default route case and sets the same behaviour for Route Information case (both types use nexthops). Handling of the 3rd RA route type, Prefix Information, is left unchanged, as it stands for interface connected routes (without nexthops). Signed-off-by: Denis Ovsienko Signed-off-by: David S. Miller --- net/ipv6/route.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 2a4c8d48977..412fad809a3 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2399,10 +2399,12 @@ static int rt6_fill_node(struct net *net, rtm->rtm_protocol = rt->rt6i_protocol; if (rt->rt6i_flags & RTF_DYNAMIC) rtm->rtm_protocol = RTPROT_REDIRECT; - else if (rt->rt6i_flags & RTF_ADDRCONF) - rtm->rtm_protocol = RTPROT_KERNEL; - else if (rt->rt6i_flags & RTF_DEFAULT) - rtm->rtm_protocol = RTPROT_RA; + else if (rt->rt6i_flags & RTF_ADDRCONF) { + if (rt->rt6i_flags & (RTF_DEFAULT | RTF_ROUTEINFO)) + rtm->rtm_protocol = RTPROT_RA; + else + rtm->rtm_protocol = RTPROT_KERNEL; + } if (rt->rt6i_flags & RTF_CACHE) rtm->rtm_flags |= RTM_F_CLONED; -- 2.20.1