This is a note to let you know that I've just added the patch titled
ipv6: Check expire on DST_NOCACHE route
to the 4.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ipv6-check-expire-on-dst_nocache-route.patch
and it can be found in the queue-4.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Fri Dec 11 11:38:06 EST 2015
From: Martin KaFai Lau <kafai@xxxxxx>
Date: Wed, 11 Nov 2015 11:51:07 -0800
Subject: ipv6: Check expire on DST_NOCACHE route
From: Martin KaFai Lau <kafai@xxxxxx>
[ Upstream commit 5973fb1e245086071bf71994c8b54d99526ded03 ]
Since the expires of the DST_NOCACHE rt can be set during
the ip6_rt_update_pmtu(), we also need to consider the expires
value when doing ip6_dst_check().
This patches creates __rt6_check_expired() to only
check the expire value (if one exists) of the current rt.
In rt6_dst_from_check(), it adds __rt6_check_expired() as
one of the condition check.
Signed-off-by: Martin KaFai Lau <kafai@xxxxxx>
Cc: Hannes Frederic Sowa <hannes@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ipv6/route.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -403,6 +403,14 @@ static void ip6_dst_ifdown(struct dst_en
}
}
+static bool __rt6_check_expired(const struct rt6_info *rt)
+{
+ if (rt->rt6i_flags & RTF_EXPIRES)
+ return time_after(jiffies, rt->dst.expires);
+ else
+ return false;
+}
+
static bool rt6_check_expired(const struct rt6_info *rt)
{
if (rt->rt6i_flags & RTF_EXPIRES) {
@@ -1270,7 +1278,8 @@ static struct dst_entry *rt6_check(struc
static struct dst_entry *rt6_dst_from_check(struct rt6_info *rt, u32 cookie)
{
- if (rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK &&
+ if (!__rt6_check_expired(rt) &&
+ rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK &&
rt6_check((struct rt6_info *)(rt->dst.from), cookie))
return &rt->dst;
else
Patches currently in stable-queue which might be from kafai@xxxxxx are
queue-4.3/ipv6-check-rt-dst.from-for-the-dst_nocache-route.patch
queue-4.3/ipv6-avoid-creating-rtf_cache-from-a-rt-that-is-not-managed-by-fib6-tree.patch
queue-4.3/ipv6-check-expire-on-dst_nocache-route.patch
queue-4.3/net-ip6_tunnel-fix-dst-leak.patch
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