diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-10-10 15:44:44 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-10 16:55:54 -0700 |
| commit | 37fedd3aab6517daec628764c5d66dd8761fbe5f (patch) | |
| tree | 12227aec3944168bff04173dccd580240f4496aa /net/ipv4/esp4.c | |
| parent | 7b277b1a5fb147cb828e5d8b9780cee60f31a9bf (diff) | |
[IPSEC]: Use IPv6 calling convention as the convention for x->mode->output
The IPv6 calling convention for x->mode->output is more general and could
help an eventual protocol-generic x->type->output implementation. This
patch adopts it for IPv4 as well and modifies the IPv4 type output functions
accordingly.
It also rewrites the IPv6 mac/transport header calculation to be based off
the network header where practical.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/esp4.c')
| -rw-r--r-- | net/ipv4/esp4.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index 0f5e8387ccb4..93153d105619 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -60,10 +60,10 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb) skb_push(skb, -skb_network_offset(skb)); top_iph = ip_hdr(skb); - esph = (struct ip_esp_hdr *)(skb_network_header(skb) + - top_iph->ihl * 4); + esph = (struct ip_esp_hdr *)skb_transport_header(skb); top_iph->tot_len = htons(skb->len + alen); - *(skb_tail_pointer(trailer) - 1) = top_iph->protocol; + *(skb_tail_pointer(trailer) - 1) = *skb_mac_header(skb); + *skb_mac_header(skb) = IPPROTO_ESP; spin_lock_bh(&x->lock); @@ -91,9 +91,8 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb) break; } - top_iph->protocol = IPPROTO_UDP; - } else - top_iph->protocol = IPPROTO_ESP; + *skb_mac_header(skb) = IPPROTO_UDP; + } esph->spi = x->id.spi; esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq); |