summaryrefslogtreecommitdiff
path: root/net/ipv6/exthdrs.c
diff options
context:
space:
mode:
authorArnaldo Carvalho de Melo <acme@redhat.com>2007-04-26 04:55:53 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-26 09:25:16 +0400
commitea2ae17d6443abddc79480dc9f7af8feacabddc4 (patch)
tree2d6f48a5e4a40f761b5b510af9aac1fca55004cb /net/ipv6/exthdrs.c
parentbadff6d01a8589a1c828b0bf118903ca38627f4e (diff)
downloadlinux-ea2ae17d6443abddc79480dc9f7af8feacabddc4.tar.xz
[SK_BUFF]: Introduce skb_transport_offset()
For the quite common 'skb->h.raw - skb->data' sequence. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/exthdrs.c')
-rw-r--r--net/ipv6/exthdrs.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index dab069b0b3f6..1bda0299890e 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -146,7 +146,7 @@ static int ip6_parse_tlv(struct tlvtype_proc *procs, struct sk_buff **skbp)
int off = skb->h.raw - skb->nh.raw;
int len = ((skb->h.raw[1]+1)<<3);
- if ((skb->h.raw + len) - skb->data > skb_headlen(skb))
+ if (skb_transport_offset(skb) + len > skb_headlen(skb))
goto bad;
off += 2;
@@ -288,8 +288,9 @@ static int ipv6_destopt_rcv(struct sk_buff **skbp)
#endif
struct dst_entry *dst;
- if (!pskb_may_pull(skb, (skb->h.raw-skb->data)+8) ||
- !pskb_may_pull(skb, (skb->h.raw-skb->data)+((skb->h.raw[1]+1)<<3))) {
+ if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
+ !pskb_may_pull(skb, (skb_transport_offset(skb) +
+ ((skb->h.raw[1] + 1) << 3)))) {
IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);
@@ -387,8 +388,9 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp)
in6_dev_put(idev);
- if (!pskb_may_pull(skb, (skb->h.raw-skb->data)+8) ||
- !pskb_may_pull(skb, (skb->h.raw-skb->data)+((skb->h.raw[1]+1)<<3))) {
+ if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
+ !pskb_may_pull(skb, (skb_transport_offset(skb) +
+ ((skb->h.raw[1] + 1) << 3)))) {
IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);