netlink: add RX/TX-ring support to netlink diag

Based on AF_PACKET.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/uapi/linux/netlink_diag.h b/include/uapi/linux/netlink_diag.h
index 88009a31cd06..4e31db4eea41 100644
--- a/include/uapi/linux/netlink_diag.h
+++ b/include/uapi/linux/netlink_diag.h
@@ -25,9 +25,18 @@ struct netlink_diag_msg {
         __u32   ndiag_cookie[2];
 };
 
+struct netlink_diag_ring {
+        __u32   ndr_block_size;
+        __u32   ndr_block_nr;
+        __u32   ndr_frame_size;
+        __u32   ndr_frame_nr;
+};
+
 enum {
         NETLINK_DIAG_MEMINFO,
         NETLINK_DIAG_GROUPS,
+        NETLINK_DIAG_RX_RING,
+        NETLINK_DIAG_TX_RING,
 
         __NETLINK_DIAG_MAX,
 };
@@ -38,5 +47,6 @@ enum {
 
 #define NDIAG_SHOW_MEMINFO      0x00000001 /* show memory info of a socket */
 #define NDIAG_SHOW_GROUPS       0x00000002 /* show groups of a netlink socket */
+#define NDIAG_SHOW_RING_CFG     0x00000004 /* show ring configuration */
 
 #endif