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, 28 insertions, 0 deletions

diff --git a/include/uapi/linux/tipc_netlink.h b/include/uapi/linux/tipc_netlink.h
index f446fba6a0c7..8c87e2490bc7 100644
--- a/include/uapi/linux/tipc_netlink.h
+++ b/include/uapi/linux/tipc_netlink.h
@@ -45,6 +45,7 @@ enum {
         TIPC_NL_BEARER_ENABLE,
         TIPC_NL_BEARER_GET,
         TIPC_NL_BEARER_SET,
+        TIPC_NL_SOCK_GET,
 
         __TIPC_NL_CMD_MAX,
         TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1
@@ -54,6 +55,7 @@ enum {
 enum {
         TIPC_NLA_UNSPEC,
         TIPC_NLA_BEARER,                /* nest */
+        TIPC_NLA_SOCK,                  /* nest */
 
         __TIPC_NLA_MAX,
         TIPC_NLA_MAX = __TIPC_NLA_MAX - 1
@@ -70,6 +72,32 @@ enum {
         TIPC_NLA_BEARER_MAX = __TIPC_NLA_BEARER_MAX - 1
 };
 
+/* Socket info */
+enum {
+        TIPC_NLA_SOCK_UNSPEC,
+        TIPC_NLA_SOCK_ADDR,             /* u32 */
+        TIPC_NLA_SOCK_REF,              /* u32 */
+        TIPC_NLA_SOCK_CON,              /* nest */
+        TIPC_NLA_SOCK_HAS_PUBL,         /* flag */
+
+        __TIPC_NLA_SOCK_MAX,
+        TIPC_NLA_SOCK_MAX = __TIPC_NLA_SOCK_MAX - 1
+};
+
+/* Nest, connection info */
+enum {
+        TIPC_NLA_CON_UNSPEC,
+
+        TIPC_NLA_CON_FLAG,              /* flag */
+        TIPC_NLA_CON_NODE,              /* u32 */
+        TIPC_NLA_CON_SOCK,              /* u32 */
+        TIPC_NLA_CON_TYPE,              /* u32 */
+        TIPC_NLA_CON_INST,              /* u32 */
+
+        __TIPC_NLA_CON_MAX,
+        TIPC_NLA_CON_MAX = __TIPC_NLA_CON_MAX - 1
+};
+
 /* Nest, link propreties. Valid for link, media and bearer */
 enum {
         TIPC_NLA_PROP_UNSPEC,