Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[linux-2.6-omap-h63xx.git] / net / ipv4 / ah4.c

diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index aed537fa2c88507440c68daf87076c6a56332cb6..c7782230080d21d76a7ffa70ef6df2eb6358df1b 100644 (file)
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -97,6 +97,7 @@ static int ah_output(struct xfrm_state *x, struct sk_buff *skb)
        ah->reserved = 0;
        ah->spi = x->id.spi;
        ah->seq_no = htonl(++x->replay.oseq);
+       xfrm_aevent_doreplay(x);
        ahp->icv(ahp, skb, ah->auth_data);
 
        top_iph->tos = iph->tos;
@@ -115,9 +116,10 @@ error:
        return err;
 }
 
-static int ah_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
+static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
 {
        int ah_hlen;
+       int ihl;
        struct iphdr *iph;
        struct ip_auth_hdr *ah;
        struct ah_data *ahp;
@@ -148,13 +150,14 @@ static int ah_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct
        ah = (struct ip_auth_hdr*)skb->data;
        iph = skb->nh.iph;
 
-       memcpy(work_buf, iph, iph->ihl*4);
+       ihl = skb->data - skb->nh.raw;
+       memcpy(work_buf, iph, ihl);
 
        iph->ttl = 0;
        iph->tos = 0;
        iph->frag_off = 0;
        iph->check = 0;
-       if (iph->ihl != 5) {
+       if (ihl > sizeof(*iph)) {
                u32 dummy;
                if (ip_clear_mutable_options(iph, &dummy))
                        goto out;
@@ -163,7 +166,7 @@ static int ah_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct
                u8 auth_data[MAX_AH_AUTH_LEN];
                
                memcpy(auth_data, ah->auth_data, ahp->icv_trunc_len);
-               skb_push(skb, skb->data - skb->nh.raw);
+               skb_push(skb, ihl);
                ahp->icv(ahp, skb, ah->auth_data);
                if (memcmp(ah->auth_data, auth_data, ahp->icv_trunc_len)) {
                        x->stats.integrity_failed++;
@@ -171,11 +174,8 @@ static int ah_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct
                }
        }
        ((struct iphdr*)work_buf)->protocol = ah->nexthdr;
-       skb->nh.raw = skb_pull(skb, ah_hlen);
-       memcpy(skb->nh.raw, work_buf, iph->ihl*4);
-       skb->nh.iph->tot_len = htons(skb->len);
-       skb_pull(skb, skb->nh.iph->ihl*4);
-       skb->h.raw = skb->data;
+       skb->h.raw = memcpy(skb->nh.raw += ah_hlen, work_buf, ihl);
+       __skb_pull(skb, ah_hlen + ihl);
 
        return 0;