From b49fe36208b45f76dfbcfcd3afd952a33fa9f5ce Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 18 Sep 2014 11:00:27 -0700 Subject: ipoib: validate struct ipoib_cb size To catch future errors sooner. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/infiniband/ulp/ipoib/ipoib.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/infiniband/ulp/ipoib/ipoib.h') diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h index 3edce617c31b..d7562beb5423 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib.h +++ b/drivers/infiniband/ulp/ipoib/ipoib.h @@ -131,6 +131,12 @@ struct ipoib_cb { u8 hwaddr[INFINIBAND_ALEN]; }; +static inline struct ipoib_cb *ipoib_skb_cb(const struct sk_buff *skb) +{ + BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct ipoib_cb)); + return (struct ipoib_cb *)skb->cb; +} + /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */ struct ipoib_mcast { struct ib_sa_mcmember_rec mcmember; -- cgit v1.2.3-59-g8ed1b