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| author | Andrey Vagin <avagin@openvz.org> | 2012-07-16 04:28:49 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-07-16 22:31:34 -0700 |
| commit | 51d7cccf07238f5236c5b9269231a30dd5f8e714 (patch) | |
| tree | 1155d43b810d0f163276182be610d69c50e862d9 /net/ipv4/udp_diag.c | |
| parent | cbc89c8cf279b85edc95b4ae40a9e7e1edf2dfae (diff) | |
| download | linux-51d7cccf07238f5236c5b9269231a30dd5f8e714.tar.gz linux-51d7cccf07238f5236c5b9269231a30dd5f8e714.tar.bz2 linux-51d7cccf07238f5236c5b9269231a30dd5f8e714.zip | |
net: make sock diag per-namespace
Before this patch sock_diag works for init_net only and dumps
information about sockets from all namespaces.
This patch expands sock_diag for all name-spaces.
It creates a netlink kernel socket for each netns and filters
data during dumping.
v2: filter accoding with netns in all places
remove an unused variable.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Pavel Emelyanov <xemul@parallels.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Andrew Vagin <avagin@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp_diag.c')
| -rw-r--r-- | net/ipv4/udp_diag.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c index a7f86a3cd502..16d0960062be 100644 --- a/net/ipv4/udp_diag.c +++ b/net/ipv4/udp_diag.c @@ -34,15 +34,16 @@ static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb, int err = -EINVAL; struct sock *sk; struct sk_buff *rep; + struct net *net = sock_net(in_skb->sk); if (req->sdiag_family == AF_INET) - sk = __udp4_lib_lookup(&init_net, + sk = __udp4_lib_lookup(net, req->id.idiag_src[0], req->id.idiag_sport, req->id.idiag_dst[0], req->id.idiag_dport, req->id.idiag_if, tbl); #if IS_ENABLED(CONFIG_IPV6) else if (req->sdiag_family == AF_INET6) - sk = __udp6_lib_lookup(&init_net, + sk = __udp6_lib_lookup(net, (struct in6_addr *)req->id.idiag_src, req->id.idiag_sport, (struct in6_addr *)req->id.idiag_dst, @@ -75,7 +76,7 @@ static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb, kfree_skb(rep); goto out; } - err = netlink_unicast(sock_diag_nlsk, rep, NETLINK_CB(in_skb).pid, + err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).pid, MSG_DONTWAIT); if (err > 0) err = 0; @@ -90,6 +91,7 @@ static void udp_dump(struct udp_table *table, struct sk_buff *skb, struct netlin struct inet_diag_req_v2 *r, struct nlattr *bc) { int num, s_num, slot, s_slot; + struct net *net = sock_net(skb->sk); s_slot = cb->args[0]; num = s_num = cb->args[1]; @@ -106,6 +108,8 @@ static void udp_dump(struct udp_table *table, struct sk_buff *skb, struct netlin sk_nulls_for_each(sk, node, &hslot->head) { struct inet_sock *inet = inet_sk(sk); + if (!net_eq(sock_net(sk), net)) + continue; if (num < s_num) goto next; if (!(r->idiag_states & (1 << sk->sk_state))) |