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authorSteffen Klassert <steffen.klassert@secunet.com>2010-06-04 05:57:38 +0400
committerDavid S. Miller <davem@davemloft.net>2010-06-05 02:56:00 +0400
commit8764ab2ca7ab5055e1ca80f9cfa4970c34acb804 (patch)
treeca0a6ea6c6fabbb98220f5b700981f7f23855f42 /net
parent4f4aeb7fd0f7e6ca008bb2147ba36cee13876595 (diff)
downloadlinux-8764ab2ca7ab5055e1ca80f9cfa4970c34acb804.tar.xz
net: check for refcount if pop a stacked dst_entry
xfrm triggers a warning if dst_pop() drops a refcount on a noref dst. This patch changes dst_pop() to skb_dst_pop(). skb_dst_pop() drops the refcnt only on a refcounted dst. Also we don't clone the child dst_entry, so it is not refcounted and we can use skb_dst_set_noref() in xfrm_output_one(). Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/xfrm/xfrm_output.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 6a329158bdfa..a3cca0a94346 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -95,13 +95,13 @@ resume:
goto error_nolock;
}
- dst = dst_pop(dst);
+ dst = skb_dst_pop(skb);
if (!dst) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
err = -EHOSTUNREACH;
goto error_nolock;
}
- skb_dst_set(skb, dst);
+ skb_dst_set_noref(skb, dst);
x = dst->xfrm;
} while (x && !(x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL));