net: bridge: add compile-time assert for cb struct size

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>
This commit is contained in:
Florian Westphal 2015-03-03 13:53:31 +01:00 committed by David S. Miller
parent acf8dd0a9d
commit 71e168b151

View File

@ -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");