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authorSimon Horman <horms@verge.net.au>2013-05-28 20:34:23 +0000
committerDavid S. Miller <davem@davemloft.net>2013-05-28 23:49:06 -0700
commit25b6e14881e7861bb720a4624dcaf5f37854fc70 (patch)
tree8cd7aabe39f00ebf33ffd0abe1785cb84d28b4c0 /drivers/isdn
parent75538c2b85cf22eb9af6adfaf26ed7219025adeb (diff)
isdn: Correct comparison of 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 the comparison is always between pointers. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn')
-rw-r--r--drivers/isdn/i4l/isdn_net.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c
index 88d657dff474..8b98d53d9976 100644
--- a/drivers/isdn/i4l/isdn_net.c
+++ b/drivers/isdn/i4l/isdn_net.c
@@ -885,7 +885,7 @@ isdn_net_log_skb(struct sk_buff *skb, isdn_net_local *lp)
addinfo[0] = '\0';
/* This check stolen from 2.1.72 dev_queue_xmit_nit() */
- if (p < skb->data || skb->network_header >= skb->tail) {
+ if (p < skb->data || skb_network_header(skb) >= skb_tail_pointer(skb)) {
/* fall back to old isdn_net_log_packet method() */
char *buf = skb->data;