tipc: add media get/dump to new netlink api

Add TIPC_NL_MEDIA_GET command to the new tipc netlink API.

This command supports dumping all information about all defined
media as well as getting all information about a specific media.

The information about a media includes name and link properties.

Netlink logical layout of media get response message:
-> media
    -> name
    -> link properties
        -> tolerance
        -> priority
        -> window

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, 12 insertions, 0 deletions

diff --git a/include/uapi/linux/tipc_netlink.h b/include/uapi/linux/tipc_netlink.h
index 574882a301bf..4101b70991cc 100644
--- a/include/uapi/linux/tipc_netlink.h
+++ b/include/uapi/linux/tipc_netlink.h
@@ -50,6 +50,7 @@ enum {
         TIPC_NL_LINK_GET,
         TIPC_NL_LINK_SET,
         TIPC_NL_LINK_RESET_STATS,
+        TIPC_NL_MEDIA_GET,
 
         __TIPC_NL_CMD_MAX,
         TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1
@@ -62,6 +63,7 @@ enum {
         TIPC_NLA_SOCK,                  /* nest */
         TIPC_NLA_PUBL,                  /* nest */
         TIPC_NLA_LINK,                  /* nest */
+        TIPC_NLA_MEDIA,                 /* nest */
 
         __TIPC_NLA_MAX,
         TIPC_NLA_MAX = __TIPC_NLA_MAX - 1
@@ -108,6 +110,16 @@ enum {
         TIPC_NLA_LINK_MAX = __TIPC_NLA_LINK_MAX - 1
 };
 
+/* Media info */
+enum {
+        TIPC_NLA_MEDIA_UNSPEC,
+        TIPC_NLA_MEDIA_NAME,            /* string */
+        TIPC_NLA_MEDIA_PROP,            /* nest */
+
+        __TIPC_NLA_MEDIA_MAX,
+        TIPC_NLA_MEDIA_MAX = __TIPC_NLA_MEDIA_MAX - 1
+};
+
 /* Publication info */
 enum {
         TIPC_NLA_PUBL_UNSPEC,