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

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make build fail if structure no longer fits into ->cb storage.

Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Florian Westphal 2015-03-03 13:53:31 +01:00 • committed by David S. Miller
commit 71e168b151
1 changed files with 2 additions and 0 deletions
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2
net/bridge/br.c
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@ -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");