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net: bridge: add compile-time assert for cb struct size
author
Florian Westphal
<fw@strlen.de>
Tue, 3 Mar 2015 12:53:31 +0000
(13:53 +0100)
committer
David S. Miller
<davem@davemloft.net>
Tue, 3 Mar 2015 19:07:04 +0000
(14:07 -0500)
make build fail if structure no longer fits into ->cb storage.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/bridge/br.c
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diff --git
a/net/bridge/br.c
b/net/bridge/br.c
index
fb57ab6
..
02c24cf
100644
(file)
--- a/
net/bridge/br.c
+++ b/
net/bridge/br.c
@@
-190,6
+190,8
@@
static int __init br_init(void)
{
int err;
+ BUILD_BUG_ON(sizeof(struct br_input_skb_cb) > FIELD_SIZEOF(struct sk_buff, cb));
+
err = stp_proto_register(&br_stp_proto);
if (err < 0) {
pr_err("bridge: can't register sap for STP\n");