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net: packet: use sockaddr_ll fields as storage for skb original length in recvmsg...
authorEyal Birger <eyal.birger@gmail.com>
Sun, 1 Mar 2015 12:58:28 +0000 (14:58 +0200)
committerDavid S. Miller <davem@davemloft.net>
Mon, 2 Mar 2015 05:19:29 +0000 (00:19 -0500)
commit2472d7613bd3bae40a7dc75539c0858d5b9e795a
tree0c08b919ed13050fef72a0e2f1f8552157d833eatree | snapshot
parent2cfdf9fcb85bf6c0bb4556384ba800b9f443f601commit | diff
net: packet: use sockaddr_ll fields as storage for skb original length in recvmsg path

As part of an effort to move skb->dropcount to skb->cb[], 4 bytes
of additional room are needed in skb->cb[] in packet sockets.

Store the skb original length in the first two fields of sockaddr_ll
(sll_family and sll_protocol) as they can be derived from the skb when
needed.

Signed-off-by: Eyal Birger <eyal.birger@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/packet/af_packet.c diff | blob | history
Domain: System / Kernel;