[SIT]: Add net/sit_net argument to some functions.

... to make them prepared for future hashes and fallback device
move on the struct sit_net.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index aa6efc2ab55b693d5e8435919b2e7bcf67dd827a..66cf0be4b679e6124dc3c0e0ffca71e038d77fa8 100644 (file)
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -82,7 +82,8 @@ static struct ip_tunnel **tunnels[4] = { tunnels_wc, tunnels_l, tunnels_r, tunne
 
 static DEFINE_RWLOCK(ipip6_lock);
 
-static struct ip_tunnel * ipip6_tunnel_lookup(__be32 remote, __be32 local)
+static struct ip_tunnel * ipip6_tunnel_lookup(struct net *net,
+               __be32 remote, __be32 local)
 {
        unsigned h0 = HASH(remote);
        unsigned h1 = HASH(local);
@@ -106,7 +107,8 @@ static struct ip_tunnel * ipip6_tunnel_lookup(__be32 remote, __be32 local)
        return NULL;
 }
 
-static struct ip_tunnel **__ipip6_bucket(struct ip_tunnel_parm *parms)
+static struct ip_tunnel **__ipip6_bucket(struct sit_net *sitn,
+               struct ip_tunnel_parm *parms)
 {
        __be32 remote = parms->iph.daddr;
        __be32 local = parms->iph.saddr;
@@ -124,16 +126,17 @@ static struct ip_tunnel **__ipip6_bucket(struct ip_tunnel_parm *parms)
        return &tunnels[prio][h];
 }
 
-static inline struct ip_tunnel **ipip6_bucket(struct ip_tunnel *t)
+static inline struct ip_tunnel **ipip6_bucket(struct sit_net *sitn,
+               struct ip_tunnel *t)
 {
-       return __ipip6_bucket(&t->parms);
+       return __ipip6_bucket(sitn, &t->parms);
 }
 
-static void ipip6_tunnel_unlink(struct ip_tunnel *t)
+static void ipip6_tunnel_unlink(struct sit_net *sitn, struct ip_tunnel *t)
 {
        struct ip_tunnel **tp;
 
-       for (tp = ipip6_bucket(t); *tp; tp = &(*tp)->next) {
+       for (tp = ipip6_bucket(sitn, t); *tp; tp = &(*tp)->next) {
                if (t == *tp) {
                        write_lock_bh(&ipip6_lock);
                        *tp = t->next;
@@ -143,9 +146,9 @@ static void ipip6_tunnel_unlink(struct ip_tunnel *t)
        }
 }
 
-static void ipip6_tunnel_link(struct ip_tunnel *t)
+static void ipip6_tunnel_link(struct sit_net *sitn, struct ip_tunnel *t)
 {
-       struct ip_tunnel **tp = ipip6_bucket(t);
+       struct ip_tunnel **tp = ipip6_bucket(sitn, t);
 
        t->next = *tp;
        write_lock_bh(&ipip6_lock);
@@ -153,15 +156,17 @@ static void ipip6_tunnel_link(struct ip_tunnel *t)
        write_unlock_bh(&ipip6_lock);
 }
 
-static struct ip_tunnel * ipip6_tunnel_locate(struct ip_tunnel_parm *parms, int create)
+static struct ip_tunnel * ipip6_tunnel_locate(struct net *net,
+               struct ip_tunnel_parm *parms, int create)
 {
        __be32 remote = parms->iph.daddr;
        __be32 local = parms->iph.saddr;
        struct ip_tunnel *t, **tp, *nt;
        struct net_device *dev;
        char name[IFNAMSIZ];
+       struct sit_net *sitn = net_generic(net, sit_net_id);
 
-       for (tp = __ipip6_bucket(parms); (t = *tp) != NULL; tp = &t->next) {
+       for (tp = __ipip6_bucket(sitn, parms); (t = *tp) != NULL; tp = &t->next) {
                if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr)
                        return t;
        }
@@ -194,7 +199,7 @@ static struct ip_tunnel * ipip6_tunnel_locate(struct ip_tunnel_parm *parms, int
 
        dev_hold(dev);
 
-       ipip6_tunnel_link(nt);
+       ipip6_tunnel_link(sitn, nt);
        return nt;
 
 failed_free:
@@ -378,13 +383,16 @@ isatap_chksrc(struct sk_buff *skb, struct iphdr *iph, struct ip_tunnel *t)
 
 static void ipip6_tunnel_uninit(struct net_device *dev)
 {
+       struct net *net = dev_net(dev);
+       struct sit_net *sitn = net_generic(net, sit_net_id);
+
        if (dev == ipip6_fb_tunnel_dev) {
                write_lock_bh(&ipip6_lock);
                tunnels_wc[0] = NULL;
                write_unlock_bh(&ipip6_lock);
                dev_put(dev);
        } else {
-               ipip6_tunnel_unlink(netdev_priv(dev));
+               ipip6_tunnel_unlink(sitn, netdev_priv(dev));
                ipip6_tunnel_del_prl(netdev_priv(dev), NULL);
                dev_put(dev);
        }
@@ -436,7 +444,7 @@ static int ipip6_err(struct sk_buff *skb, u32 info)
        err = -ENOENT;
 
        read_lock(&ipip6_lock);
-       t = ipip6_tunnel_lookup(iph->daddr, iph->saddr);
+       t = ipip6_tunnel_lookup(&init_net, iph->daddr, iph->saddr);
        if (t == NULL || t->parms.iph.daddr == 0)
                goto out;
 
@@ -556,7 +564,8 @@ static int ipip6_rcv(struct sk_buff *skb)
        iph = ip_hdr(skb);
 
        read_lock(&ipip6_lock);
-       if ((tunnel = ipip6_tunnel_lookup(iph->saddr, iph->daddr)) != NULL) {
+       if ((tunnel = ipip6_tunnel_lookup(&init_net,
+                                       iph->saddr, iph->daddr)) != NULL) {
                secpath_reset(skb);
                skb->mac_header = skb->network_header;
                skb_reset_network_header(skb);
@@ -847,6 +856,8 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
        struct ip_tunnel_parm p;
        struct ip_tunnel_prl prl;
        struct ip_tunnel *t;
+       struct net *net = dev_net(dev);
+       struct sit_net *sitn = net_generic(net, sit_net_id);
 
        switch (cmd) {
        case SIOCGETTUNNEL:
@@ -856,7 +867,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
                                err = -EFAULT;
                                break;
                        }
-                       t = ipip6_tunnel_locate(&p, 0);
+                       t = ipip6_tunnel_locate(net, &p, 0);
                }
                if (t == NULL)
                        t = netdev_priv(dev);
@@ -882,7 +893,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
                if (p.iph.ttl)
                        p.iph.frag_off |= htons(IP_DF);
 
-               t = ipip6_tunnel_locate(&p, cmd == SIOCADDTUNNEL);
+               t = ipip6_tunnel_locate(net, &p, cmd == SIOCADDTUNNEL);
 
                if (dev != ipip6_fb_tunnel_dev && cmd == SIOCCHGTUNNEL) {
                        if (t != NULL) {
@@ -897,12 +908,12 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
                                        break;
                                }
                                t = netdev_priv(dev);
-                               ipip6_tunnel_unlink(t);
+                               ipip6_tunnel_unlink(sitn, t);
                                t->parms.iph.saddr = p.iph.saddr;
                                t->parms.iph.daddr = p.iph.daddr;
                                memcpy(dev->dev_addr, &p.iph.saddr, 4);
                                memcpy(dev->broadcast, &p.iph.daddr, 4);
-                               ipip6_tunnel_link(t);
+                               ipip6_tunnel_link(sitn, t);
                                netdev_state_change(dev);
                        }
                }
@@ -934,7 +945,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
                        if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
                                goto done;
                        err = -ENOENT;
-                       if ((t = ipip6_tunnel_locate(&p, 0)) == NULL)
+                       if ((t = ipip6_tunnel_locate(net, &p, 0)) == NULL)
                                goto done;
                        err = -EPERM;
                        if (t == netdev_priv(ipip6_fb_tunnel_dev))