openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[IPIP]: Add net/ipip_net argument to some functions. 

The hashes of tunnels will be per-net too, so prepare all the 
functions that uses them for this change by adding an argument.

Use init_net temporarily in places, where the net does not exist
explicitly yet.

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 01:04:35 -07:00 committed by David S. Miller
parent b9855c54da
commit b9fae5c913
1 changed files with 25 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
net/ipv4/ipip.c
View File

@ -138,7 +138,8 @@ static struct ip_tunnel **tunnels[4] = { tunnels_wc, tunnels_l, tunnels_r, tunne
static DEFINE_RWLOCK(ipip_lock);
static struct ip_tunnel * ipip_tunnel_lookup(__be32 remote, __be32 local)
static struct ip_tunnel * ipip_tunnel_lookup(struct net *net,
__be32 remote, __be32 local)
{
unsigned h0 = HASH(remote);
unsigned h1 = HASH(local);
@ -162,7 +163,8 @@ static struct ip_tunnel * ipip_tunnel_lookup(__be32 remote, __be32 local)
return NULL;
}
static struct ip_tunnel **__ipip_bucket(struct ip_tunnel_parm *parms)
static struct ip_tunnel **__ipip_bucket(struct ipip_net *ipn,
struct ip_tunnel_parm *parms)
{
__be32 remote = parms->iph.daddr;
__be32 local = parms->iph.saddr;
@ -180,16 +182,17 @@ static struct ip_tunnel **__ipip_bucket(struct ip_tunnel_parm *parms)
return &tunnels[prio][h];
}
static inline struct ip_tunnel **ipip_bucket(struct ip_tunnel *t)
static inline struct ip_tunnel **ipip_bucket(struct ipip_net *ipn,
struct ip_tunnel *t)
{
return __ipip_bucket(&t->parms);
return __ipip_bucket(ipn, &t->parms);
}
static void ipip_tunnel_unlink(struct ip_tunnel *t)
static void ipip_tunnel_unlink(struct ipip_net *ipn, struct ip_tunnel *t)
{
struct ip_tunnel **tp;
for (tp = ipip_bucket(t); *tp; tp = &(*tp)->next) {
for (tp = ipip_bucket(ipn, t); *tp; tp = &(*tp)->next) {
if (t == *tp) {
write_lock_bh(&ipip_lock);
*tp = t->next;
@ -199,9 +202,9 @@ static void ipip_tunnel_unlink(struct ip_tunnel *t)
}
}
static void ipip_tunnel_link(struct ip_tunnel *t)
static void ipip_tunnel_link(struct ipip_net *ipn, struct ip_tunnel *t)
{
struct ip_tunnel **tp = ipip_bucket(t);
struct ip_tunnel **tp = ipip_bucket(ipn, t);
t->next = *tp;
write_lock_bh(&ipip_lock);
@ -209,15 +212,17 @@ static void ipip_tunnel_link(struct ip_tunnel *t)
write_unlock_bh(&ipip_lock);
}
static struct ip_tunnel * ipip_tunnel_locate(struct ip_tunnel_parm *parms, int create)
static struct ip_tunnel * ipip_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 ipip_net *ipn = net_generic(net, ipip_net_id);
for (tp = __ipip_bucket(parms); (t = *tp) != NULL; tp = &t->next) {
for (tp = __ipip_bucket(ipn, parms); (t = *tp) != NULL; tp = &t->next) {
if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr)
return t;
}
@ -246,7 +251,7 @@ static struct ip_tunnel * ipip_tunnel_locate(struct ip_tunnel_parm *parms, int c
goto failed_free;
dev_hold(dev);
ipip_tunnel_link(nt);
ipip_tunnel_link(ipn, nt);
return nt;
failed_free:
@ -264,7 +269,7 @@ static void ipip_tunnel_uninit(struct net_device *dev)
tunnels_wc[0] = NULL;
write_unlock_bh(&ipip_lock);
} else
ipip_tunnel_unlink(netdev_priv(dev));
ipip_tunnel_unlink(ipn, netdev_priv(dev));
dev_put(dev);
}
@ -313,7 +318,7 @@ static int ipip_err(struct sk_buff *skb, u32 info)
err = -ENOENT;
read_lock(&ipip_lock);
t = ipip_tunnel_lookup(iph->daddr, iph->saddr);
t = ipip_tunnel_lookup(&init_net, iph->daddr, iph->saddr);
if (t == NULL || t->parms.iph.daddr == 0)
goto out;
@ -473,7 +478,8 @@ static int ipip_rcv(struct sk_buff *skb)
const struct iphdr *iph = ip_hdr(skb);
read_lock(&ipip_lock);
if ((tunnel = ipip_tunnel_lookup(iph->saddr, iph->daddr)) != NULL) {
if ((tunnel = ipip_tunnel_lookup(&init_net,
iph->saddr, iph->daddr)) != NULL) {
if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {
read_unlock(&ipip_lock);
kfree_skb(skb);
@ -706,7 +712,7 @@ ipip_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
err = -EFAULT;
break;
}
t = ipip_tunnel_locate(&p, 0);
t = ipip_tunnel_locate(net, &p, 0);
}
if (t == NULL)
t = netdev_priv(dev);
@ -732,7 +738,7 @@ ipip_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
if (p.iph.ttl)
p.iph.frag_off |= htons(IP_DF);
t = ipip_tunnel_locate(&p, cmd == SIOCADDTUNNEL);
t = ipip_tunnel_locate(net, &p, cmd == SIOCADDTUNNEL);
if (dev != ipn->fb_tunnel_dev && cmd == SIOCCHGTUNNEL) {
if (t != NULL) {
@ -747,12 +753,12 @@ ipip_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
break;
}
t = netdev_priv(dev);
ipip_tunnel_unlink(t);
ipip_tunnel_unlink(ipn, 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);
ipip_tunnel_link(t);
ipip_tunnel_link(ipn, t);
netdev_state_change(dev);
}
}
@ -785,7 +791,7 @@ ipip_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 = ipip_tunnel_locate(&p, 0)) == NULL)
if ((t = ipip_tunnel_locate(net, &p, 0)) == NULL)
goto done;
err = -EPERM;
if (t->dev == ipn->fb_tunnel_dev)