From f57e7d5a7bd2a600a8a97e278e4c46904ceacf51 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Wed, 16 Apr 2008 01:09:22 -0700 Subject: [PATCH] [GRE]: Add net/gre_net argument to some functions. The fallback device and hashes are to become per-net, but many code doesn't have anything to get the struct net pointer from. So pass the proper net there with an extra argument. Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 51 +++++++++++++++++++++++++++++------------------ 1 file changed, 32 insertions(+), 19 deletions(-) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index d729ca820931..6209ab36cab7 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -162,7 +162,8 @@ static DEFINE_RWLOCK(ipgre_lock); /* Given src, dst and key, find appropriate for input tunnel. */ -static struct ip_tunnel * ipgre_tunnel_lookup(__be32 remote, __be32 local, __be32 key) +static struct ip_tunnel * ipgre_tunnel_lookup(struct net *net, + __be32 remote, __be32 local, __be32 key) { unsigned h0 = HASH(remote); unsigned h1 = HASH(key); @@ -198,7 +199,8 @@ static struct ip_tunnel * ipgre_tunnel_lookup(__be32 remote, __be32 local, __be3 return NULL; } -static struct ip_tunnel **__ipgre_bucket(struct ip_tunnel_parm *parms) +static struct ip_tunnel **__ipgre_bucket(struct ipgre_net *ign, + struct ip_tunnel_parm *parms) { __be32 remote = parms->iph.daddr; __be32 local = parms->iph.saddr; @@ -216,14 +218,15 @@ static struct ip_tunnel **__ipgre_bucket(struct ip_tunnel_parm *parms) return &tunnels[prio][h]; } -static inline struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t) +static inline struct ip_tunnel **ipgre_bucket(struct ipgre_net *ign, + struct ip_tunnel *t) { - return __ipgre_bucket(&t->parms); + return __ipgre_bucket(ign, &t->parms); } -static void ipgre_tunnel_link(struct ip_tunnel *t) +static void ipgre_tunnel_link(struct ipgre_net *ign, struct ip_tunnel *t) { - struct ip_tunnel **tp = ipgre_bucket(t); + struct ip_tunnel **tp = ipgre_bucket(ign, t); t->next = *tp; write_lock_bh(&ipgre_lock); @@ -231,11 +234,11 @@ static void ipgre_tunnel_link(struct ip_tunnel *t) write_unlock_bh(&ipgre_lock); } -static void ipgre_tunnel_unlink(struct ip_tunnel *t) +static void ipgre_tunnel_unlink(struct ipgre_net *ign, struct ip_tunnel *t) { struct ip_tunnel **tp; - for (tp = ipgre_bucket(t); *tp; tp = &(*tp)->next) { + for (tp = ipgre_bucket(ign, t); *tp; tp = &(*tp)->next) { if (t == *tp) { write_lock_bh(&ipgre_lock); *tp = t->next; @@ -245,7 +248,8 @@ static void ipgre_tunnel_unlink(struct ip_tunnel *t) } } -static struct ip_tunnel * ipgre_tunnel_locate(struct ip_tunnel_parm *parms, int create) +static struct ip_tunnel * ipgre_tunnel_locate(struct net *net, + struct ip_tunnel_parm *parms, int create) { __be32 remote = parms->iph.daddr; __be32 local = parms->iph.saddr; @@ -253,8 +257,9 @@ static struct ip_tunnel * ipgre_tunnel_locate(struct ip_tunnel_parm *parms, int struct ip_tunnel *t, **tp, *nt; struct net_device *dev; char name[IFNAMSIZ]; + struct ipgre_net *ign = net_generic(net, ipgre_net_id); - for (tp = __ipgre_bucket(parms); (t = *tp) != NULL; tp = &t->next) { + for (tp = __ipgre_bucket(ign, parms); (t = *tp) != NULL; tp = &t->next) { if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr) { if (key == t->parms.i_key) return t; @@ -285,7 +290,7 @@ static struct ip_tunnel * ipgre_tunnel_locate(struct ip_tunnel_parm *parms, int goto failed_free; dev_hold(dev); - ipgre_tunnel_link(nt); + ipgre_tunnel_link(ign, nt); return nt; failed_free: @@ -295,7 +300,10 @@ failed_free: static void ipgre_tunnel_uninit(struct net_device *dev) { - ipgre_tunnel_unlink(netdev_priv(dev)); + struct net *net = dev_net(dev); + struct ipgre_net *ign = net_generic(net, ipgre_net_id); + + ipgre_tunnel_unlink(ign, netdev_priv(dev)); dev_put(dev); } @@ -369,7 +377,9 @@ static void ipgre_err(struct sk_buff *skb, u32 info) } read_lock(&ipgre_lock); - t = ipgre_tunnel_lookup(iph->daddr, iph->saddr, (flags&GRE_KEY) ? *(((__be32*)p) + (grehlen>>2) - 1) : 0); + t = ipgre_tunnel_lookup(&init_net, iph->daddr, iph->saddr, + (flags&GRE_KEY) ? + *(((__be32*)p) + (grehlen>>2) - 1) : 0); if (t == NULL || t->parms.iph.daddr == 0 || ipv4_is_multicast(t->parms.iph.daddr)) goto out; @@ -602,7 +612,8 @@ static int ipgre_rcv(struct sk_buff *skb) } read_lock(&ipgre_lock); - if ((tunnel = ipgre_tunnel_lookup(iph->saddr, iph->daddr, key)) != NULL) { + if ((tunnel = ipgre_tunnel_lookup(&init_net, + iph->saddr, iph->daddr, key)) != NULL) { secpath_reset(skb); skb->protocol = *(__be16*)(h + 2); @@ -960,6 +971,8 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) int err = 0; struct ip_tunnel_parm p; struct ip_tunnel *t; + struct net *net = dev_net(dev); + struct ipgre_net *ign = net_generic(net, ipgre_net_id); switch (cmd) { case SIOCGETTUNNEL: @@ -969,7 +982,7 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) err = -EFAULT; break; } - t = ipgre_tunnel_locate(&p, 0); + t = ipgre_tunnel_locate(net, &p, 0); } if (t == NULL) t = netdev_priv(dev); @@ -1001,7 +1014,7 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) if (!(p.o_flags&GRE_KEY)) p.o_key = 0; - t = ipgre_tunnel_locate(&p, cmd == SIOCADDTUNNEL); + t = ipgre_tunnel_locate(net, &p, cmd == SIOCADDTUNNEL); if (dev != ipgre_fb_tunnel_dev && cmd == SIOCCHGTUNNEL) { if (t != NULL) { @@ -1023,14 +1036,14 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) err = -EINVAL; break; } - ipgre_tunnel_unlink(t); + ipgre_tunnel_unlink(ign, t); t->parms.iph.saddr = p.iph.saddr; t->parms.iph.daddr = p.iph.daddr; t->parms.i_key = p.i_key; t->parms.o_key = p.o_key; memcpy(dev->dev_addr, &p.iph.saddr, 4); memcpy(dev->broadcast, &p.iph.daddr, 4); - ipgre_tunnel_link(t); + ipgre_tunnel_link(ign, t); netdev_state_change(dev); } } @@ -1063,7 +1076,7 @@ ipgre_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 = ipgre_tunnel_locate(&p, 0)) == NULL) + if ((t = ipgre_tunnel_locate(net, &p, 0)) == NULL) goto done; err = -EPERM; if (t == netdev_priv(ipgre_fb_tunnel_dev)) -- 2.30.2