Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6

[linux-2.6-omap-h63xx.git] / net / ipv6 / ah6.c

diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index 4eaf55072b1b05ff7c52537acb01eead7bd761f4..52449f7a1b715cf830fb4d051cb31ebd10cc3350 100644 (file)
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -283,7 +283,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
 
        ah->reserved = 0;
        ah->spi = x->id.spi;
-       ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq);
+       ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output);
 
        spin_lock_bh(&x->lock);
        err = ah_mac_digest(ahp, skb, ah->auth_data);
@@ -370,6 +370,7 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
        ip6h->flow_lbl[2] = 0;
        ip6h->hop_limit   = 0;
 
+       spin_lock(&x->lock);
        {
                u8 auth_data[MAX_AH_AUTH_LEN];
 
@@ -378,14 +379,15 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
                skb_push(skb, hdr_len);
                err = ah_mac_digest(ahp, skb, ah->auth_data);
                if (err)
-                       goto free_out;
-               err = -EINVAL;
-               if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len)) {
-                       LIMIT_NETDEBUG(KERN_WARNING "ipsec ah authentication error\n");
-                       x->stats.integrity_failed++;
-                       goto free_out;
-               }
+                       goto unlock;
+               if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len))
+                       err = -EBADMSG;
        }
+unlock:
+       spin_unlock(&x->lock);
+
+       if (err)
+               goto free_out;
 
        skb->network_header += ah_hlen;
        memcpy(skb_network_header(skb), tmp_hdr, hdr_len);
@@ -405,6 +407,7 @@ out:
 static void ah6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                    int type, int code, int offset, __be32 info)
 {
+       struct net *net = dev_net(skb->dev);
        struct ipv6hdr *iph = (struct ipv6hdr*)skb->data;
        struct ip_auth_hdr *ah = (struct ip_auth_hdr*)(skb->data+offset);
        struct xfrm_state *x;
@@ -413,12 +416,12 @@ static void ah6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
            type != ICMPV6_PKT_TOOBIG)
                return;
 
-       x = xfrm_state_lookup((xfrm_address_t *)&iph->daddr, ah->spi, IPPROTO_AH, AF_INET6);
+       x = xfrm_state_lookup(net, (xfrm_address_t *)&iph->daddr, ah->spi, IPPROTO_AH, AF_INET6);
        if (!x)
                return;
 
-       NETDEBUG(KERN_DEBUG "pmtu discovery on SA AH/%08x/" NIP6_FMT "\n",
-                ntohl(ah->spi), NIP6(iph->daddr));
+       NETDEBUG(KERN_DEBUG "pmtu discovery on SA AH/%08x/%pI6\n",
+                ntohl(ah->spi), &iph->daddr);
 
        xfrm_state_put(x);
 }
@@ -507,13 +510,11 @@ static void ah6_destroy(struct xfrm_state *x)
                return;
 
        kfree(ahp->work_icv);
-       ahp->work_icv = NULL;
        crypto_free_hash(ahp->tfm);
-       ahp->tfm = NULL;
        kfree(ahp);
 }
 
-static struct xfrm_type ah6_type =
+static const struct xfrm_type ah6_type =
 {
        .description    = "AH6",
        .owner          = THIS_MODULE,