Add sg helpers for iterating over a scatterlist table

[safe/jmp/linux-2.6] / net / ipv6 / mip6.c

diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 8a1399c..7fd841d 100644 (file)
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -153,11 +153,11 @@ static int mip6_destopt_output(struct xfrm_state *x, struct sk_buff *skb)
        u8 nexthdr;
        int len;
 
-       iph = (struct ipv6hdr *)skb->data;
-       iph->payload_len = htons(skb->len - sizeof(*iph));
+       skb_push(skb, -skb_network_offset(skb));
+       iph = ipv6_hdr(skb);
 
-       nexthdr = *skb_network_header(skb);
-       *skb_network_header(skb) = IPPROTO_DSTOPTS;
+       nexthdr = *skb_mac_header(skb);
+       *skb_mac_header(skb) = IPPROTO_DSTOPTS;
 
        dstopt = (struct ipv6_destopt_hdr *)skb_transport_header(skb);
        dstopt->nexthdr = nexthdr;
@@ -172,7 +172,9 @@ static int mip6_destopt_output(struct xfrm_state *x, struct sk_buff *skb)
        len = ((char *)hao - (char *)dstopt) + sizeof(*hao);
 
        memcpy(&hao->addr, &iph->saddr, sizeof(hao->addr));
+       spin_lock_bh(&x->lock);
        memcpy(&iph->saddr, x->coaddr, sizeof(iph->saddr));
+       spin_unlock_bh(&x->lock);
 
        BUG_TRAP(len == x->props.header_len);
        dstopt->hdrlen = (x->props.header_len >> 3) - 1;
@@ -365,11 +367,11 @@ static int mip6_rthdr_output(struct xfrm_state *x, struct sk_buff *skb)
        struct rt2_hdr *rt2;
        u8 nexthdr;
 
-       iph = (struct ipv6hdr *)skb->data;
-       iph->payload_len = htons(skb->len - sizeof(*iph));
+       skb_push(skb, -skb_network_offset(skb));
+       iph = ipv6_hdr(skb);
 
-       nexthdr = *skb_network_header(skb);
-       *skb_network_header(skb) = IPPROTO_ROUTING;
+       nexthdr = *skb_mac_header(skb);
+       *skb_mac_header(skb) = IPPROTO_ROUTING;
 
        rt2 = (struct rt2_hdr *)skb_transport_header(skb);
        rt2->rt_hdr.nexthdr = nexthdr;
@@ -381,7 +383,9 @@ static int mip6_rthdr_output(struct xfrm_state *x, struct sk_buff *skb)
        BUG_TRAP(rt2->rt_hdr.hdrlen == 2);
 
        memcpy(&rt2->addr, &iph->daddr, sizeof(rt2->addr));
+       spin_lock_bh(&x->lock);
        memcpy(&iph->daddr, x->coaddr, sizeof(iph->daddr));
+       spin_unlock_bh(&x->lock);
 
        return 0;
 }