[NETNS][IPV6] ndisc - make socket control per namespace

Make ndisc socket control per 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 2008-03-07 11:15:34 -08:00 committed by David S. Miller
parent a18bc6959d
commit 1762f7e88e
2 changed files with 54 additions and 24 deletions

View File

@ -51,5 +51,6 @@ struct netns_ipv6 {
struct fib_rules_ops *fib6_rules_ops;
#endif
struct sock **icmp_sk;
struct sock *ndisc_sk;
};
#endif

View File

@ -89,8 +89,6 @@
#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.h>
static struct socket *ndisc_socket;
static u32 ndisc_hash(const void *pkey, const struct net_device *dev);
static int ndisc_constructor(struct neighbour *neigh);
static void ndisc_solicit(struct neighbour *neigh, struct sk_buff *skb);
@ -449,7 +447,8 @@ static void __ndisc_send(struct net_device *dev,
{
struct flowi fl;
struct dst_entry *dst;
struct sock *sk = ndisc_socket->sk;
struct net *net = dev->nd_net;
struct sock *sk = net->ipv6.ndisc_sk;
struct sk_buff *skb;
struct icmp6hdr *hdr;
struct inet6_dev *idev;
@ -459,8 +458,7 @@ static void __ndisc_send(struct net_device *dev,
type = icmp6h->icmp6_type;
icmpv6_flow_init(ndisc_socket->sk, &fl, type,
saddr, daddr, dev->ifindex);
icmpv6_flow_init(sk, &fl, type, saddr, daddr, dev->ifindex);
dst = icmp6_dst_alloc(dev, neigh, daddr);
if (!dst)
@ -1394,13 +1392,14 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
struct in6_addr *target)
{
struct sock *sk = ndisc_socket->sk;
struct net_device *dev = skb->dev;
struct net *net = dev->nd_net;
struct sock *sk = net->ipv6.ndisc_sk;
int len = sizeof(struct icmp6hdr) + 2 * sizeof(struct in6_addr);
struct sk_buff *buff;
struct icmp6hdr *icmph;
struct in6_addr saddr_buf;
struct in6_addr *addrp;
struct net_device *dev;
struct rt6_info *rt;
struct dst_entry *dst;
struct inet6_dev *idev;
@ -1411,8 +1410,6 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
int hlen;
u8 ha_buf[MAX_ADDR_LEN], *ha = NULL;
dev = skb->dev;
if (ipv6_get_lladdr(dev, &saddr_buf, IFA_F_TENTATIVE)) {
ND_PRINTK2(KERN_WARNING
"ICMPv6 Redirect: no link-local address on %s\n",
@ -1427,10 +1424,10 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
return;
}
icmpv6_flow_init(ndisc_socket->sk, &fl, NDISC_REDIRECT,
icmpv6_flow_init(sk, &fl, NDISC_REDIRECT,
&saddr_buf, &ipv6_hdr(skb)->saddr, dev->ifindex);
dst = ip6_route_output(&init_net, NULL, &fl);
dst = ip6_route_output(net, NULL, &fl);
if (dst == NULL)
return;
@ -1719,22 +1716,24 @@ static int ndisc_ifinfo_sysctl_strategy(ctl_table *ctl, int __user *name,
#endif
int __init ndisc_init(void)
static int ndisc_net_init(struct net *net)
{
struct socket *sock;
struct ipv6_pinfo *np;
struct sock *sk;
int err;
err = sock_create_kern(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6, &ndisc_socket);
err = sock_create_kern(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6, &sock);
if (err < 0) {
ND_PRINTK0(KERN_ERR
"ICMPv6 NDISC: Failed to initialize the control socket (err %d).\n",
err);
ndisc_socket = NULL; /* For safety. */
return err;
}
sk = ndisc_socket->sk;
net->ipv6.ndisc_sk = sk = sock->sk;
sk_change_net(sk, net);
np = inet6_sk(sk);
sk->sk_allocation = GFP_ATOMIC;
np->hop_limit = 255;
@ -1742,21 +1741,52 @@ int __init ndisc_init(void)
np->mc_loop = 0;
sk->sk_prot->unhash(sk);
return 0;
}
static void ndisc_net_exit(struct net *net)
{
sk_release_kernel(net->ipv6.ndisc_sk);
}
static struct pernet_operations ndisc_net_ops = {
.init = ndisc_net_init,
.exit = ndisc_net_exit,
};
int __init ndisc_init(void)
{
int err;
err = register_pernet_subsys(&ndisc_net_ops);
if (err)
return err;
/*
* Initialize the neighbour table
*/
neigh_table_init(&nd_tbl);
#ifdef CONFIG_SYSCTL
neigh_sysctl_register(NULL, &nd_tbl.parms, NET_IPV6, NET_IPV6_NEIGH,
"ipv6",
&ndisc_ifinfo_sysctl_change,
&ndisc_ifinfo_sysctl_strategy);
err = neigh_sysctl_register(NULL, &nd_tbl.parms, NET_IPV6,
NET_IPV6_NEIGH, "ipv6",
&ndisc_ifinfo_sysctl_change,
&ndisc_ifinfo_sysctl_strategy);
if (err)
goto out_unregister_pernet;
#endif
err = register_netdevice_notifier(&ndisc_netdev_notifier);
if (err)
goto out_unregister_sysctl;
out:
return err;
register_netdevice_notifier(&ndisc_netdev_notifier);
return 0;
out_unregister_sysctl:
#ifdef CONFIG_SYSCTL
neigh_sysctl_unregister(&nd_tbl.parms);
out_unregister_pernet:
#endif
unregister_pernet_subsys(&ndisc_net_ops);
goto out;
}
void ndisc_cleanup(void)
@ -1766,6 +1796,5 @@ void ndisc_cleanup(void)
neigh_sysctl_unregister(&nd_tbl.parms);
#endif
neigh_table_clear(&nd_tbl);
sock_release(ndisc_socket);
ndisc_socket = NULL; /* For safety. */
unregister_pernet_subsys(&ndisc_net_ops);
}