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Date: Tue, 15 Apr 2008 18:00:54 +0400
From: Pavel Emelyanov <xemul@...nvz.org>
To: David Miller <davem@...emloft.net>
CC: Linux Netdev List <netdev@...r.kernel.org>
Subject: [PATCH net-2.6.26 2/7][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@...nvz.org>
---
net/ipv6/ip6_tunnel.c | 47 ++++++++++++++++++++++++++++-------------------
1 files changed, 28 insertions(+), 19 deletions(-)
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 2365eb0..fad1af8 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -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)
--
1.5.3.4
--
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