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net: use common macro for assering skb->cb[] available size in protocol families

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As part of an effort to move skb->dropcount to skb->cb[] use a common
macro in protocol families using skb->cb[] for ancillary data to
validate available room in skb->cb[].

Signed-off-by: Eyal Birger <eyal.birger@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eyal Birger
2015-03-01 14:58:29 +02:00
committed by David S. Miller
parent 2472d7613b
commit b4772ef879
9 changed files with 13 additions and 14 deletions
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3
net/packet/af_packet.c
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@@ -1816,8 +1816,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
skb = nskb;
}
BUILD_BUG_ON(sizeof(*PACKET_SKB_CB(skb)) + MAX_ADDR_LEN - 8 >
sizeof(skb->cb));
sock_skb_cb_check_size(sizeof(*PACKET_SKB_CB(skb)) + MAX_ADDR_LEN - 8);
sll = &PACKET_SKB_CB(skb)->sa.ll;
sll->sll_hatype = dev->type;