[NET]: Make the device list and device lookups per namespace.

[pandora-kernel.git] / net / ipv6 / sit.c

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 08d6ed3..e79f419 100644 (file)
--- 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;
        }
@@ -172,7 +167,7 @@ static struct ip_tunnel * ipip6_tunnel_locate(struct ip_tunnel_parm *parms, int
                int i;
                for (i=1; i<100; i++) {
                        sprintf(name, "sit%d", i);
-                       if (__dev_get_by_name(name) == NULL)
+                       if (__dev_get_by_name(&init_net, name) == NULL)
                                break;
                }
                if (i==100)
@@ -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:
@@ -340,7 +335,7 @@ out:
        dst_release(skb2->dst);
        skb2->dst = NULL;
        skb_pull(skb2, skb->data - (u8*)iph6);
-       skb2->nh.raw = skb2->data;
+       skb_reset_network_header(skb2);
 
        /* Try to guess incoming interface */
        rt6i = rt6_lookup(&iph6->saddr, NULL, NULL, 0);
@@ -366,7 +361,7 @@ out:
 static inline void ipip6_ecn_decapsulate(struct iphdr *iph, struct sk_buff *skb)
 {
        if (INET_ECN_is_ce(iph->tos))
-               IP6_ECN_set_ce(skb->nh.ipv6h);
+               IP6_ECN_set_ce(ipv6_hdr(skb));
 }
 
 static int ipip6_rcv(struct sk_buff *skb)
@@ -377,13 +372,13 @@ static int ipip6_rcv(struct sk_buff *skb)
        if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
                goto out;
 
-       iph = skb->nh.iph;
+       iph = ip_hdr(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->nh.raw = skb->data;
+               skb->mac_header = skb->network_header;
+               skb_reset_network_header(skb);
                IPCB(skb)->flags = 0;
                skb->protocol = htons(ETH_P_IPV6);
                skb->pkt_type = PACKET_HOST;
@@ -430,7 +425,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
        struct ip_tunnel *tunnel = netdev_priv(dev);
        struct net_device_stats *stats = &tunnel->stat;
        struct iphdr  *tiph = &tunnel->parms.iph;
-       struct ipv6hdr *iph6 = skb->nh.ipv6h;
+       struct ipv6hdr *iph6 = ipv6_hdr(skb);
        u8     tos = tunnel->parms.iph.tos;
        struct rtable *rt;                      /* Route to the other host */
        struct net_device *tdev;                        /* Device to other host */
@@ -468,7 +463,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
                addr_type = ipv6_addr_type(addr6);
 
                if (addr_type == IPV6_ADDR_ANY) {
-                       addr6 = &skb->nh.ipv6h->daddr;
+                       addr6 = &ipv6_hdr(skb)->daddr;
                        addr_type = ipv6_addr_type(addr6);
                }
 
@@ -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);
@@ -550,11 +546,12 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
                        skb_set_owner_w(new_skb, skb->sk);
                dev_kfree_skb(skb);
                skb = new_skb;
-               iph6 = skb->nh.ipv6h;
+               iph6 = ipv6_hdr(skb);
        }
 
-       skb->h.raw = skb->nh.raw;
-       skb->nh.raw = skb_push(skb, sizeof(struct iphdr));
+       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));
        IPCB(skb)->flags = 0;
        dst_release(skb->dst);
@@ -564,7 +561,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
         *      Push down and install the IPIP header.
         */
 
-       iph                     =       skb->nh.iph;
+       iph                     =       ip_hdr(skb);
        iph->version            =       4;
        iph->ihl                =       sizeof(struct iphdr)>>2;
        if (mtu > IPV6_MIN_MTU)
@@ -764,7 +761,7 @@ static int ipip6_tunnel_init(struct net_device *dev)
        }
 
        if (!tdev && tunnel->parms.link)
-               tdev = __dev_get_by_index(tunnel->parms.link);
+               tdev = __dev_get_by_index(&init_net, tunnel->parms.link);
 
        if (tdev) {
                dev->hard_header_len = tdev->hard_header_len + sizeof(struct iphdr);