tree ff130afebb3c4023eccfed777fc8913164482119
parent 00f97da17a0c8d656d0c9a60b1d7f38735f69817
author Li RongQing <roy.qing.li@gmail.com> 1370297476 +0000
committer David S. Miller <davem@davemloft.net> 1370392679 -0700

cxgb3: Correct comparisons and calculations using skb->tail and skb-transport_header

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case skb->tail will be a pointer whereas skb->transport_header
will be an offset from head. This is corrected by using wrappers that
ensure that comparisons and calculations are always made using pointers.

Cc: Simon Horman <horms@verge.net.au>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>