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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-04-25 17:55:53 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:25:16 -0700
commitea2ae17d6443abddc79480dc9f7af8feacabddc4 (patch)
tree2d6f48a5e4a40f761b5b510af9aac1fca55004cb /net/ipv6/esp6.c
parentbadff6d01a8589a1c828b0bf118903ca38627f4e (diff)
[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/esp6.c')
-rw-r--r--net/ipv6/esp6.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 7aff380e74ef..35905867ded1 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -42,21 +42,18 @@
static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
{
int err;
- int hdr_len;
struct ipv6hdr *top_iph;
struct ipv6_esp_hdr *esph;
struct crypto_blkcipher *tfm;
struct blkcipher_desc desc;
- struct esp_data *esp;
struct sk_buff *trailer;
int blksize;
int clen;
int alen;
int nfrags;
-
- esp = x->data;
- hdr_len = skb->h.raw - skb->data +
- sizeof(*esph) + esp->conf.ivlen;
+ struct esp_data *esp = x->data;
+ int hdr_len = (skb_transport_offset(skb) +
+ sizeof(*esph) + esp->conf.ivlen);
/* Strip IP+ESP header. */
__skb_pull(skb, hdr_len);