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

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... 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>
This commit is contained in:
Pavel Emelyanov 2008-04-16 01:15:39 -07:00 committed by David S. Miller
parent 8190d9009a
commit ca8def1483
1 changed files with 30 additions and 19 deletions
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49
net/ipv6/sit.c
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@ -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))