tipc: implement socket diagnostics for AF_TIPC
This commit adds socket diagnostics capability for AF_TIPC in netlink
family NETLINK_SOCK_DIAG in a new kernel module (diag.ko).
The following are key design considerations:
- config TIPC_DIAG has default y, like INET_DIAG.
- only requests with flag NLM_F_DUMP is supported (dump all).
- tipc_sock_diag_req message is introduced to send filter parameters.
- the response attributes are of TLV, some nested.
To avoid exposing data structures between diag and tipc modules and
avoid code duplication, the following additions are required:
- export tipc_nl_sk_walk function to reuse socket iterator.
- export tipc_sk_fill_sock_diag to fill the tipc diag attributes.
- create a sock_diag response message in __tipc_add_sock_diag defined
in diag.c and use the above exported tipc_sk_fill_sock_diag
to fill response.
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/uapi/linux/tipc_netlink.h b/include/uapi/linux/tipc_netlink.h
index 469aa67..d7cec04 100644
--- a/include/uapi/linux/tipc_netlink.h
+++ b/include/uapi/linux/tipc_netlink.h
@@ -114,6 +114,13 @@ enum {
TIPC_NLA_SOCK_REF, /* u32 */
TIPC_NLA_SOCK_CON, /* nest */
TIPC_NLA_SOCK_HAS_PUBL, /* flag */
+ TIPC_NLA_SOCK_STAT, /* nest */
+ TIPC_NLA_SOCK_TYPE, /* u32 */
+ TIPC_NLA_SOCK_INO, /* u32 */
+ TIPC_NLA_SOCK_UID, /* u32 */
+ TIPC_NLA_SOCK_TIPC_STATE, /* u32 */
+ TIPC_NLA_SOCK_COOKIE, /* u64 */
+ TIPC_NLA_SOCK_PAD, /* flag */
__TIPC_NLA_SOCK_MAX,
TIPC_NLA_SOCK_MAX = __TIPC_NLA_SOCK_MAX - 1
@@ -238,6 +245,17 @@ enum {
TIPC_NLA_CON_MAX = __TIPC_NLA_CON_MAX - 1
};
+/* Nest, socket statistics info */
+enum {
+ TIPC_NLA_SOCK_STAT_RCVQ, /* u32 */
+ TIPC_NLA_SOCK_STAT_SENDQ, /* u32 */
+ TIPC_NLA_SOCK_STAT_LINK_CONG, /* flag */
+ TIPC_NLA_SOCK_STAT_CONN_CONG, /* flag */
+
+ __TIPC_NLA_SOCK_STAT_MAX,
+ TIPC_NLA_SOCK_STAT_MAX = __TIPC_NLA_SOCK_STAT_MAX - 1
+};
+
/* Nest, link propreties. Valid for link, media and bearer */
enum {
TIPC_NLA_PROP_UNSPEC,
diff --git a/include/uapi/linux/tipc_sockets_diag.h b/include/uapi/linux/tipc_sockets_diag.h
new file mode 100644
index 0000000..7678cf2
--- /dev/null
+++ b/include/uapi/linux/tipc_sockets_diag.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* AF_TIPC sock_diag interface for querying open sockets */
+
+#ifndef _UAPI__TIPC_SOCKETS_DIAG_H__
+#define _UAPI__TIPC_SOCKETS_DIAG_H__
+
+#include <linux/types.h>
+#include <linux/sock_diag.h>
+
+/* Request */
+struct tipc_sock_diag_req {
+ __u8 sdiag_family; /* must be AF_TIPC */
+ __u8 sdiag_protocol; /* must be 0 */
+ __u16 pad; /* must be 0 */
+ __u32 tidiag_states; /* query*/
+};
+#endif /* _UAPI__TIPC_SOCKETS_DIAG_H__ */