[IPSEC]: Get rid of ipv6_{auth,esp,comp}_hdr

This patch removes the duplicate ipv6_{auth,esp,comp}_hdr structures since
they're identical to the IPv4 versions.  Duplicating them would only create
problems for ourselves later when we need to add things like extended
sequence numbers.

I've also added transport header type conversion headers for these types
which are now used by the transforms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 8 deletions

diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index ac6bae17a13b..f9f689162692 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -270,7 +270,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
                         goto error_free_iph;
         }
 
-        ah = (struct ip_auth_hdr *)skb_transport_header(skb);
+        ah = ip_auth_hdr(skb);
         ah->nexthdr = nexthdr;
 
         top_iph->priority    = 0;
@@ -280,8 +280,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
         top_iph->hop_limit   = 0;
 
         ahp = x->data;
-        ah->hdrlen  = (XFRM_ALIGN8(sizeof(struct ipv6_auth_hdr) +
-                                   ahp->icv_trunc_len) >> 2) - 2;
+        ah->hdrlen  = (XFRM_ALIGN8(sizeof(*ah) + ahp->icv_trunc_len) >> 2) - 2;
 
         ah->reserved = 0;
         ah->spi = x->id.spi;
@@ -327,7 +326,7 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
          * There is offset of AH before IPv6 header after the process.
          */
 
-        struct ipv6_auth_hdr *ah;
+        struct ip_auth_hdr *ah;
         struct ipv6hdr *ip6h;
         struct ah_data *ahp;
         unsigned char *tmp_hdr = NULL;
@@ -346,13 +345,13 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
                 goto out;
 
         hdr_len = skb->data - skb_network_header(skb);
-        ah = (struct ipv6_auth_hdr*)skb->data;
+        ah = (struct ip_auth_hdr *)skb->data;
         ahp = x->data;
         nexthdr = ah->nexthdr;
         ah_hlen = (ah->hdrlen + 2) << 2;
 
-        if (ah_hlen != XFRM_ALIGN8(sizeof(struct ipv6_auth_hdr) + ahp->icv_full_len) &&
-            ah_hlen != XFRM_ALIGN8(sizeof(struct ipv6_auth_hdr) + ahp->icv_trunc_len))
+        if (ah_hlen != XFRM_ALIGN8(sizeof(*ah) + ahp->icv_full_len) &&
+            ah_hlen != XFRM_ALIGN8(sizeof(*ah) + ahp->icv_trunc_len))
                 goto out;
 
         if (!pskb_may_pull(skb, ah_hlen))
@@ -474,7 +473,8 @@ static int ah6_init_state(struct xfrm_state *x)
         if (!ahp->work_icv)
                 goto error;
 
-        x->props.header_len = XFRM_ALIGN8(sizeof(struct ipv6_auth_hdr) + ahp->icv_trunc_len);
+        x->props.header_len = XFRM_ALIGN8(sizeof(struct ip_auth_hdr) +
+                                          ahp->icv_trunc_len);
         if (x->props.mode == XFRM_MODE_TUNNEL)
                 x->props.header_len += sizeof(struct ipv6hdr);
         x->data = ahp;