X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv6%2Fsit.c;h=eb20bb690abd736e6699f1af7987cb8a1287d3c3;hb=3f5f4346b6d3c8bc33780a941da2473c4be2c989;hp=18ec86f177d929ed6f143374f71201da1f739f3f;hpb=0660e03f6b18f19b6bbafe7583265a51b90daf36;p=linux-2.6

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 18ec86f177..eb20bb690a 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -99,10 +99,10 @@ static struct ip_tunnel * ipip6_tunnel_lookup(__be32 remote, __be32 local)
 	return NULL;
 }
 
-static struct ip_tunnel ** ipip6_bucket(struct ip_tunnel *t)
+static struct ip_tunnel **__ipip6_bucket(struct ip_tunnel_parm *parms)
 {
-	__be32 remote = t->parms.iph.daddr;
-	__be32 local = t->parms.iph.saddr;
+	__be32 remote = parms->iph.daddr;
+	__be32 local = parms->iph.saddr;
 	unsigned h = 0;
 	int prio = 0;
 
@@ -117,6 +117,11 @@ static struct ip_tunnel ** ipip6_bucket(struct ip_tunnel *t)
 	return &tunnels[prio][h];
 }
 
+static inline struct ip_tunnel **ipip6_bucket(struct ip_tunnel *t)
+{
+	return __ipip6_bucket(&t->parms);
+}
+
 static void ipip6_tunnel_unlink(struct ip_tunnel *t)
 {
 	struct ip_tunnel **tp;
@@ -147,19 +152,9 @@ static struct ip_tunnel * ipip6_tunnel_locate(struct ip_tunnel_parm *parms, int
 	__be32 local = parms->iph.saddr;
 	struct ip_tunnel *t, **tp, *nt;
 	struct net_device *dev;
-	unsigned h = 0;
-	int prio = 0;
 	char name[IFNAMSIZ];
 
-	if (remote) {
-		prio |= 2;
-		h ^= HASH(remote);
-	}
-	if (local) {
-		prio |= 1;
-		h ^= HASH(local);
-	}
-	for (tp = &tunnels[prio][h]; (t = *tp) != NULL; tp = &t->next) {
+	for (tp = __ipip6_bucket(parms); (t = *tp) != NULL; tp = &t->next) {
 		if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr)
 			return t;
 	}
@@ -224,8 +219,8 @@ static int ipip6_err(struct sk_buff *skb, u32 info)
    ICMP in the real Internet is absolutely infeasible.
  */
 	struct iphdr *iph = (struct iphdr*)skb->data;
-	int type = skb->h.icmph->type;
-	int code = skb->h.icmph->code;
+	const int type = icmp_hdr(skb)->type;
+	const int code = icmp_hdr(skb)->code;
 	struct ip_tunnel *t;
 	int err;
 
@@ -280,8 +275,8 @@ out:
 	struct iphdr *iph = (struct iphdr*)dp;
 	int hlen = iph->ihl<<2;
 	struct ipv6hdr *iph6;
-	int type = skb->h.icmph->type;
-	int code = skb->h.icmph->code;
+	const int type = icmp_hdr(skb)->type;
+	const int code = icmp_hdr(skb)->code;
 	int rel_type = 0;
 	int rel_code = 0;
 	int rel_info = 0;
@@ -296,14 +291,14 @@ out:
 	default:
 		return;
 	case ICMP_PARAMETERPROB:
-		if (skb->h.icmph->un.gateway < hlen)
+		if (icmp_hdr(skb)->un.gateway < hlen)
 			return;
 
 		/* So... This guy found something strange INSIDE encapsulated
 		   packet. Well, he is fool, but what can we do ?
 		 */
 		rel_type = ICMPV6_PARAMPROB;
-		rel_info = skb->h.icmph->un.gateway - hlen;
+		rel_info = icmp_hdr(skb)->un.gateway - hlen;
 		break;
 
 	case ICMP_DEST_UNREACH:
@@ -382,7 +377,7 @@ static int ipip6_rcv(struct sk_buff *skb)
 	read_lock(&ipip6_lock);
 	if ((tunnel = ipip6_tunnel_lookup(iph->saddr, iph->daddr)) != NULL) {
 		secpath_reset(skb);
-		skb->mac.raw = skb->nh.raw;
+		skb->mac_header = skb->network_header;
 		skb_reset_network_header(skb);
 		IPCB(skb)->flags = 0;
 		skb->protocol = htons(ETH_P_IPV6);
@@ -537,7 +532,8 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 	 */
 	max_headroom = LL_RESERVED_SPACE(tdev)+sizeof(struct iphdr);
 
-	if (skb_headroom(skb) < max_headroom || skb_cloned(skb) || skb_shared(skb)) {
+	if (skb_headroom(skb) < max_headroom || skb_shared(skb) ||
+	    (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
 		struct sk_buff *new_skb = skb_realloc_headroom(skb, max_headroom);
 		if (!new_skb) {
 			ip_rt_put(rt);
@@ -553,7 +549,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 		iph6 = ipv6_hdr(skb);
 	}
 
-	skb->h.raw = skb->nh.raw;
+	skb->transport_header = skb->network_header;
 	skb_push(skb, sizeof(struct iphdr));
 	skb_reset_network_header(skb);
 	memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));