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[NETNS][IPV6] anycast - handle several network namespace 

Make use of the network namespace information to have this protocol to
handle several network namespace.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Lezcano 2008-03-26 16:52:32 -07:00 committed by David S. Miller
parent a233352506
commit 6ab57e7e7f
5 changed files with 37 additions and 35 deletions
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3
include/net/addrconf.h
View File

@ -134,7 +134,8 @@ extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
struct in6_addr *addr);
/* Device notifier */

17
include/net/ipv6.h
View File

@ -591,8 +591,8 @@ extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
int __user *optlen);
#ifdef CONFIG_PROC_FS
extern int ac6_proc_init(void);
extern void ac6_proc_exit(void);
extern int ac6_proc_init(struct net *net);
extern void ac6_proc_exit(struct net *net);
extern int raw6_proc_init(void);
extern void raw6_proc_exit(void);
extern int tcp6_proc_init(struct net *net);
@ -607,15 +607,10 @@ extern int snmp6_register_dev(struct inet6_dev *idev);
extern int snmp6_unregister_dev(struct inet6_dev *idev);
#else
static inline int snmp6_register_dev(struct inet6_dev *idev)
{
return 0;
}
static inline int snmp6_unregister_dev(struct inet6_dev *idev)
{
return 0;
}
static inline int ac6_proc_init(struct net *net) { return 0; }
static inline void ac6_proc_exit(struct net *net) { }
static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; }
static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
#endif
#ifdef CONFIG_SYSCTL

12
net/ipv6/af_inet6.c
View File

@ -862,11 +862,16 @@ static int inet6_net_init(struct net *net)
err = tcp6_proc_init(net);
if (err)
goto proc_tcp6_fail;
err = ac6_proc_init(net);
if (err)
goto proc_ac6_fail;
out:
#endif
return err;
#ifdef CONFIG_PROC_FS
proc_ac6_fail:
tcp6_proc_exit(net);
proc_tcp6_fail:
udp6_proc_exit(net);
goto out;
@ -878,6 +883,7 @@ static void inet6_net_exit(struct net *net)
#ifdef CONFIG_PROC_FS
udp6_proc_exit(net);
tcp6_proc_exit(net);
ac6_proc_exit(net);
#endif
}
@ -965,9 +971,6 @@ static int __init inet6_init(void)
goto proc_udplite6_fail;
if (ipv6_misc_proc_init())
goto proc_misc6_fail;
if (ac6_proc_init())
goto proc_anycast6_fail;
if (if6_proc_init())
goto proc_if6_fail;
#endif
@ -1039,8 +1042,6 @@ ip6_route_fail:
#ifdef CONFIG_PROC_FS
if6_proc_exit();
proc_if6_fail:
ac6_proc_exit();
proc_anycast6_fail:
ipv6_misc_proc_exit();
proc_misc6_fail:
udplite6_proc_exit();
@ -1101,7 +1102,6 @@ static void __exit inet6_exit(void)
/* Cleanup code parts. */
if6_proc_exit();
ac6_proc_exit();
ipv6_misc_proc_exit();
udplite6_proc_exit();
raw6_proc_exit();

38
net/ipv6/anycast.c
View File

@ -82,6 +82,7 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, struct in6_addr *addr)
struct net_device *dev = NULL;
struct inet6_dev *idev;
struct ipv6_ac_socklist *pac;
struct net *net = sock_net(sk);
int ishost = !ipv6_devconf.forwarding;
int err = 0;
@ -89,7 +90,7 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, struct in6_addr *addr)
return -EPERM;
if (ipv6_addr_is_multicast(addr))
return -EINVAL;
if (ipv6_chk_addr(&init_net, addr, NULL, 0))
if (ipv6_chk_addr(net, addr, NULL, 0))
return -EINVAL;
pac = sock_kmalloc(sk, sizeof(struct ipv6_ac_socklist), GFP_KERNEL);
@ -101,7 +102,7 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, struct in6_addr *addr)
if (ifindex == 0) {
struct rt6_info *rt;
rt = rt6_lookup(&init_net, addr, NULL, 0, 0);
rt = rt6_lookup(net, addr, NULL, 0, 0);
if (rt) {
dev = rt->rt6i_dev;
dev_hold(dev);
@ -112,10 +113,10 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, struct in6_addr *addr)
} else {
/* router, no matching interface: just pick one */
dev = dev_get_by_flags(&init_net, IFF_UP, IFF_UP|IFF_LOOPBACK);
dev = dev_get_by_flags(net, IFF_UP, IFF_UP|IFF_LOOPBACK);
}
} else
dev = dev_get_by_index(&init_net, ifindex);
dev = dev_get_by_index(net, ifindex);
if (dev == NULL) {
err = -ENODEV;
@ -176,6 +177,7 @@ int ipv6_sock_ac_drop(struct sock *sk, int ifindex, struct in6_addr *addr)
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev;
struct ipv6_ac_socklist *pac, *prev_pac;
struct net *net = sock_net(sk);
write_lock_bh(&ipv6_sk_ac_lock);
prev_pac = NULL;
@ -196,7 +198,7 @@ int ipv6_sock_ac_drop(struct sock *sk, int ifindex, struct in6_addr *addr)
write_unlock_bh(&ipv6_sk_ac_lock);
dev = dev_get_by_index(&init_net, pac->acl_ifindex);
dev = dev_get_by_index(net, pac->acl_ifindex);
if (dev) {
ipv6_dev_ac_dec(dev, &pac->acl_addr);
dev_put(dev);
@ -210,6 +212,7 @@ void ipv6_sock_ac_close(struct sock *sk)
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev = NULL;
struct ipv6_ac_socklist *pac;
struct net *net = sock_net(sk);
int prev_index;
write_lock_bh(&ipv6_sk_ac_lock);
@ -224,7 +227,7 @@ void ipv6_sock_ac_close(struct sock *sk)
if (pac->acl_ifindex != prev_index) {
if (dev)
dev_put(dev);
dev = dev_get_by_index(&init_net, pac->acl_ifindex);
dev = dev_get_by_index(net, pac->acl_ifindex);
prev_index = pac->acl_ifindex;
}
if (dev)
@ -422,14 +425,15 @@ static int ipv6_chk_acast_dev(struct net_device *dev, struct in6_addr *addr)
/*
* check if given interface (or any, if dev==0) has this anycast address
*/
int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr)
int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
struct in6_addr *addr)
{
int found = 0;
if (dev)
return ipv6_chk_acast_dev(dev, addr);
read_lock(&dev_base_lock);
for_each_netdev(&init_net, dev)
for_each_netdev(net, dev)
if (ipv6_chk_acast_dev(dev, addr)) {
found = 1;
break;
@ -441,6 +445,7 @@ int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr)
#ifdef CONFIG_PROC_FS
struct ac6_iter_state {
struct seq_net_private p;
struct net_device *dev;
struct inet6_dev *idev;
};
@ -451,9 +456,10 @@ static inline struct ifacaddr6 *ac6_get_first(struct seq_file *seq)
{
struct ifacaddr6 *im = NULL;
struct ac6_iter_state *state = ac6_seq_private(seq);
struct net *net = seq_file_net(seq);
state->idev = NULL;
for_each_netdev(&init_net, state->dev) {
for_each_netdev(net, state->dev) {
struct inet6_dev *idev;
idev = in6_dev_get(state->dev);
if (!idev)
@ -551,8 +557,8 @@ static const struct seq_operations ac6_seq_ops = {
static int ac6_seq_open(struct inode *inode, struct file *file)
{
return seq_open_private(file, &ac6_seq_ops,
sizeof(struct ac6_iter_state));
return seq_open_net(inode, file, &ac6_seq_ops,
sizeof(struct ac6_iter_state));
}
static const struct file_operations ac6_seq_fops = {
@ -560,20 +566,20 @@ static const struct file_operations ac6_seq_fops = {
.open = ac6_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_private,
.release = seq_release_net,
};
int __init ac6_proc_init(void)
int ac6_proc_init(struct net *net)
{
if (!proc_net_fops_create(&init_net, "anycast6", S_IRUGO, &ac6_seq_fops))
if (!proc_net_fops_create(net, "anycast6", S_IRUGO, &ac6_seq_fops))
return -ENOMEM;
return 0;
}
void ac6_proc_exit(void)
void ac6_proc_exit(struct net *net)
{
proc_net_remove(&init_net, "anycast6");
proc_net_remove(net, "anycast6");
}
#endif

2
net/ipv6/ndisc.c
View File

@ -773,7 +773,7 @@ static void ndisc_recv_ns(struct sk_buff *skb)
return;
}
if (ipv6_chk_acast_addr(dev, &msg->target) ||
if (ipv6_chk_acast_addr(dev_net(dev), dev, &msg->target) ||
(idev->cnf.forwarding &&
(ipv6_devconf.proxy_ndp || idev->cnf.proxy_ndp) &&
(pneigh = pneigh_lookup(&nd_tbl, dev_net(dev),