Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-24 21:21:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

[NETNS]: Provide correct namespace for fibnl netlink socket.

Browse Source 
This patch makes the netlink socket to be per namespace. That allows
to have each namespace its own socket for routing queries.

Acked-by: Benjamin Thery <benjamin.thery@bull.net>
Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Denis V. Lunev 2008-01-10 03:28:55 -08:00 committed by David S. Miller
parent e4aef8aea3
commit 6bd48fcf73
2 changed files with 18 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/netns/ipv4.h
View File

@ -9,6 +9,7 @@ struct ctl_table_header;
struct ipv4_devconf;
struct fib_rules_ops;
struct hlist_head;
struct sock;
struct netns_ipv4 {
#ifdef CONFIG_SYSCTL
@ -20,5 +21,6 @@ struct netns_ipv4 {
struct fib_rules_ops *rules_ops;
#endif
struct hlist_head *fib_table_hash;
struct sock *fibnl;
};
#endif

24
net/ipv4/fib_frontend.c
View File

@ -49,8 +49,6 @@
#define FFprint(a...) printk(KERN_DEBUG a)
static struct sock *fibnl;
#ifndef CONFIG_IP_MULTIPLE_TABLES
static int __net_init fib4_rules_init(struct net *net)
@ -845,11 +843,13 @@ static void nl_fib_lookup(struct fib_result_nl *frn, struct fib_table *tb )
static void nl_fib_input(struct sk_buff *skb)
{
struct net *net;
struct fib_result_nl *frn;
struct nlmsghdr *nlh;
struct fib_table *tb;
u32 pid;
net = skb->sk->sk_net;
nlh = nlmsg_hdr(skb);
if (skb->len < NLMSG_SPACE(0) || skb->len < nlh->nlmsg_len ||
nlh->nlmsg_len < NLMSG_LENGTH(sizeof(*frn)))
@ -861,28 +861,36 @@ static void nl_fib_input(struct sk_buff *skb)
nlh = nlmsg_hdr(skb);
frn = (struct fib_result_nl *) NLMSG_DATA(nlh);
tb = fib_get_table(&init_net, frn->tb_id_in);
tb = fib_get_table(net, frn->tb_id_in);
nl_fib_lookup(frn, tb);
pid = NETLINK_CB(skb).pid; /* pid of sending process */
NETLINK_CB(skb).pid = 0; /* from kernel */
NETLINK_CB(skb).dst_group = 0; /* unicast */
netlink_unicast(fibnl, skb, pid, MSG_DONTWAIT);
netlink_unicast(net->ipv4.fibnl, skb, pid, MSG_DONTWAIT);
}
static int nl_fib_lookup_init(struct net *net)
{
fibnl = netlink_kernel_create(net, NETLINK_FIB_LOOKUP, 0,
nl_fib_input, NULL, THIS_MODULE);
if (fibnl == NULL)
struct sock *sk;
sk = netlink_kernel_create(net, NETLINK_FIB_LOOKUP, 0,
nl_fib_input, NULL, THIS_MODULE);
if (sk == NULL)
return -EAFNOSUPPORT;
/* Don't hold an extra reference on the namespace */
put_net(sk->sk_net);
net->ipv4.fibnl = sk;
return 0;
}
static void nl_fib_lookup_exit(struct net *net)
{
sock_put(fibnl);
/* At the last minute lie and say this is a socket for the
* initial network namespace. So the socket will be safe to free.
*/
net->ipv4.fibnl->sk_net = get_net(&init_net);
sock_put(net->ipv4.fibnl);
}
static void fib_disable_ip(struct net_device *dev, int force)