diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2007-09-12 13:05:38 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-10 16:49:09 -0700 |
| commit | b4b510290b056b86611757ce1175a230f1080f53 (patch) | |
| tree | 7bd1d45855ac7457be6d50338c60751f19e436d9 /net/ipv4/netfilter | |
| parent | e9dc86534051b78e41e5b746cccc291b57a3a311 (diff) | |
[NET]: Support multiple network namespaces with netlink
Each netlink socket will live in exactly one network namespace,
this includes the controlling kernel sockets.
This patch updates all of the existing netlink protocols
to only support the initial network namespace. Request
by clients in other namespaces will get -ECONREFUSED.
As they would if the kernel did not have the support for
that netlink protocol compiled in.
As each netlink protocol is updated to be multiple network
namespace safe it can register multiple kernel sockets
to acquire a presence in the rest of the network namespaces.
The implementation in af_netlink is a simple filter implementation
at hash table insertion and hash table look up time.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/netfilter')
| -rw-r--r-- | net/ipv4/netfilter/ip_queue.c | 6 | ||||
| -rw-r--r-- | net/ipv4/netfilter/ipt_ULOG.c | 3 |
2 files changed, 5 insertions, 4 deletions
diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c index d91856097f2..82fda92e6b9 100644 --- a/net/ipv4/netfilter/ip_queue.c +++ b/net/ipv4/netfilter/ip_queue.c @@ -579,7 +579,7 @@ ipq_rcv_nl_event(struct notifier_block *this, if (event == NETLINK_URELEASE && n->protocol == NETLINK_FIREWALL && n->pid) { write_lock_bh(&queue_lock); - if (n->pid == peer_pid) + if ((n->net == &init_net) && (n->pid == peer_pid)) __ipq_reset(); write_unlock_bh(&queue_lock); } @@ -671,8 +671,8 @@ static int __init ip_queue_init(void) struct proc_dir_entry *proc; netlink_register_notifier(&ipq_nl_notifier); - ipqnl = netlink_kernel_create(NETLINK_FIREWALL, 0, ipq_rcv_sk, - NULL, THIS_MODULE); + ipqnl = netlink_kernel_create(&init_net, NETLINK_FIREWALL, 0, + ipq_rcv_sk, NULL, THIS_MODULE); if (ipqnl == NULL) { printk(KERN_ERR "ip_queue: failed to create netlink socket\n"); goto cleanup_netlink_notifier; diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c index 6ca43e4ca7e..c636d6d6357 100644 --- a/net/ipv4/netfilter/ipt_ULOG.c +++ b/net/ipv4/netfilter/ipt_ULOG.c @@ -409,7 +409,8 @@ static int __init ipt_ulog_init(void) for (i = 0; i < ULOG_MAXNLGROUPS; i++) setup_timer(&ulog_buffers[i].timer, ulog_timer, i); - nflognl = netlink_kernel_create(NETLINK_NFLOG, ULOG_MAXNLGROUPS, NULL, + nflognl = netlink_kernel_create(&init_net, + NETLINK_NFLOG, ULOG_MAXNLGROUPS, NULL, NULL, THIS_MODULE); if (!nflognl) return -ENOMEM; |