tipc: add sock dump to new netlink api

Add TIPC_NL_SOCK_GET command to the new tipc netlink API.

This command supports dumping of all available sockets with their
associated connection or publication(s). It could be extended to reply
with a single socket if the NLM_F_DUMP isn't set.

The information about a socket includes reference, address, connection
information / publication information.

Netlink logical layout of response message:
-> socket
    -> reference
    -> address
    [
    -> connection
        -> node
        -> socket
        [
        -> connected flag
        -> type
        -> instance
        ]
    ]
    [
    -> publication flag
    ]

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c
index a5291314a210..951fabeec8b7 100644
--- a/net/tipc/netlink.c
+++ b/net/tipc/netlink.c
@@ -36,6 +36,7 @@
 
 #include "core.h"
 #include "config.h"
+#include "socket.h"
 #include "bearer.h"
 #include <net/genetlink.h>
 
@@ -72,6 +73,7 @@ static int handle_cmd(struct sk_buff *skb, struct genl_info *info)
 static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = {
         [TIPC_NLA_UNSPEC]       = { .type = NLA_UNSPEC, },
         [TIPC_NLA_BEARER]       = { .type = NLA_NESTED, },
+        [TIPC_NLA_SOCK]         = { .type = NLA_NESTED, },
 };
 
 /* Legacy ASCII API */
@@ -123,6 +125,11 @@ static const struct genl_ops tipc_genl_v2_ops[] = {
                 .cmd    = TIPC_NL_BEARER_SET,
                 .doit   = tipc_nl_bearer_set,
                 .policy = tipc_nl_policy,
+        },
+        {
+                .cmd    = TIPC_NL_SOCK_GET,
+                .dumpit = tipc_nl_sk_dump,
+                .policy = tipc_nl_policy,
         }
 };