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Date: Tue, 15 Apr 2008 17:29:28 +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 2/8][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@...nvz.org>
---
net/ipv6/sit.c | 49 ++++++++++++++++++++++++++++++-------------------
1 files changed, 30 insertions(+), 19 deletions(-)
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index aa6efc2..66cf0be 100644
--- 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))
--
1.5.3.4
--
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