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OpenCloudOS-Kernel
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[IP6TUNNEL]: Add (ip6_tnl_)net argument to some calls. 

Hashes and fallback device used in them will be per-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 01:22:23 -07:00 committed by David S. Miller
parent 13eeb8e92c
commit 2dd02c897d
1 changed files with 28 additions and 19 deletions
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47
net/ipv6/ip6_tunnel.c
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@ -136,7 +136,7 @@ static inline void ip6_tnl_dst_store(struct ip6_tnl *t, struct dst_entry *dst)
**/
static struct ip6_tnl *
ip6_tnl_lookup(struct in6_addr *remote, struct in6_addr *local)
ip6_tnl_lookup(struct net *net, struct in6_addr *remote, struct in6_addr *local)
{
unsigned h0 = HASH(remote);
unsigned h1 = HASH(local);
@ -166,7 +166,7 @@ ip6_tnl_lookup(struct in6_addr *remote, struct in6_addr *local)
**/
static struct ip6_tnl **
ip6_tnl_bucket(struct ip6_tnl_parm *p)
ip6_tnl_bucket(struct ip6_tnl_net *ip6n, struct ip6_tnl_parm *p)
{
struct in6_addr *remote = &p->raddr;
struct in6_addr *local = &p->laddr;
@ -186,9 +186,9 @@ ip6_tnl_bucket(struct ip6_tnl_parm *p)
**/
static void
ip6_tnl_link(struct ip6_tnl *t)
ip6_tnl_link(struct ip6_tnl_net *ip6n, struct ip6_tnl *t)
{
struct ip6_tnl **tp = ip6_tnl_bucket(&t->parms);
struct ip6_tnl **tp = ip6_tnl_bucket(ip6n, &t->parms);
t->next = *tp;
write_lock_bh(&ip6_tnl_lock);
@ -202,11 +202,11 @@ ip6_tnl_link(struct ip6_tnl *t)
**/
static void
ip6_tnl_unlink(struct ip6_tnl *t)
ip6_tnl_unlink(struct ip6_tnl_net *ip6n, struct ip6_tnl *t)
{
struct ip6_tnl **tp;
for (tp = ip6_tnl_bucket(&t->parms); *tp; tp = &(*tp)->next) {
for (tp = ip6_tnl_bucket(ip6n, &t->parms); *tp; tp = &(*tp)->next) {
if (t == *tp) {
write_lock_bh(&ip6_tnl_lock);
*tp = t->next;
@ -228,12 +228,13 @@ ip6_tnl_unlink(struct ip6_tnl *t)
* created tunnel or NULL
**/
static struct ip6_tnl *ip6_tnl_create(struct ip6_tnl_parm *p)
static struct ip6_tnl *ip6_tnl_create(struct net *net, struct ip6_tnl_parm *p)
{
struct net_device *dev;
struct ip6_tnl *t;
char name[IFNAMSIZ];
int err;
struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
if (p->name[0])
strlcpy(name, p->name, IFNAMSIZ);
@ -257,7 +258,7 @@ static struct ip6_tnl *ip6_tnl_create(struct ip6_tnl_parm *p)
goto failed_free;
dev_hold(dev);
ip6_tnl_link(t);
ip6_tnl_link(ip6n, t);
return t;
failed_free:
@ -280,20 +281,22 @@ failed:
* matching tunnel or NULL
**/
static struct ip6_tnl *ip6_tnl_locate(struct ip6_tnl_parm *p, int create)
static struct ip6_tnl *ip6_tnl_locate(struct net *net,
struct ip6_tnl_parm *p, int create)
{
struct in6_addr *remote = &p->raddr;
struct in6_addr *local = &p->laddr;
struct ip6_tnl *t;
struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
for (t = *ip6_tnl_bucket(p); t; t = t->next) {
for (t = *ip6_tnl_bucket(ip6n, p); t; t = t->next) {
if (ipv6_addr_equal(local, &t->parms.laddr) &&
ipv6_addr_equal(remote, &t->parms.raddr))
return t;
}
if (!create)
return NULL;
return ip6_tnl_create(p);
return ip6_tnl_create(net, p);
}
/**
@ -308,13 +311,15 @@ static void
ip6_tnl_dev_uninit(struct net_device *dev)
{
struct ip6_tnl *t = netdev_priv(dev);
struct net *net = dev_net(dev);
struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
if (dev == ip6_fb_tnl_dev) {
write_lock_bh(&ip6_tnl_lock);
tnls_wc[0] = NULL;
write_unlock_bh(&ip6_tnl_lock);
} else {
ip6_tnl_unlink(t);
ip6_tnl_unlink(ip6n, t);
}
ip6_tnl_dst_reset(t);
dev_put(dev);
@ -407,7 +412,8 @@ ip6_tnl_err(struct sk_buff *skb, __u8 ipproto, struct inet6_skb_parm *opt,
processing of the error. */
read_lock(&ip6_tnl_lock);
if ((t = ip6_tnl_lookup(&ipv6h->daddr, &ipv6h->saddr)) == NULL)
if ((t = ip6_tnl_lookup(&init_net, &ipv6h->daddr,
&ipv6h->saddr)) == NULL)
goto out;
if (t->parms.proto != ipproto && t->parms.proto != 0)
@ -690,7 +696,8 @@ static int ip6_tnl_rcv(struct sk_buff *skb, __u16 protocol,
read_lock(&ip6_tnl_lock);
if ((t = ip6_tnl_lookup(&ipv6h->saddr, &ipv6h->daddr)) != NULL) {
if ((t = ip6_tnl_lookup(&init_net, &ipv6h->saddr,
&ipv6h->daddr)) != NULL) {
if (t->parms.proto != ipproto && t->parms.proto != 0) {
read_unlock(&ip6_tnl_lock);
goto discard;
@ -1197,6 +1204,8 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
int err = 0;
struct ip6_tnl_parm p;
struct ip6_tnl *t = NULL;
struct net *net = dev_net(dev);
struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
switch (cmd) {
case SIOCGETTUNNEL:
@ -1205,7 +1214,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
err = -EFAULT;
break;
}
t = ip6_tnl_locate(&p, 0);
t = ip6_tnl_locate(net, &p, 0);
}
if (t == NULL)
t = netdev_priv(dev);
@ -1226,7 +1235,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
if (p.proto != IPPROTO_IPV6 && p.proto != IPPROTO_IPIP &&
p.proto != 0)
break;
t = ip6_tnl_locate(&p, cmd == SIOCADDTUNNEL);
t = ip6_tnl_locate(net, &p, cmd == SIOCADDTUNNEL);
if (dev != ip6_fb_tnl_dev && cmd == SIOCCHGTUNNEL) {
if (t != NULL) {
if (t->dev != dev) {
@ -1236,9 +1245,9 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
} else
t = netdev_priv(dev);
ip6_tnl_unlink(t);
ip6_tnl_unlink(ip6n, t);
err = ip6_tnl_change(t, &p);
ip6_tnl_link(t);
ip6_tnl_link(ip6n, t);
netdev_state_change(dev);
}
if (t) {
@ -1259,7 +1268,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof (p)))
break;
err = -ENOENT;
if ((t = ip6_tnl_locate(&p, 0)) == NULL)
if ((t = ip6_tnl_locate(net, &p, 0)) == NULL)
break;
err = -EPERM;
if (t->dev == ip6_fb_tnl_dev)