From eaaa31392690c7609f7afeec5ba38a79d009842d Mon Sep 17 00:00:00 2001 From: Andrey Vagin Date: Thu, 21 Mar 2013 20:33:48 +0400 Subject: netlink: Diag core and basic socket info dumping (v2) The netlink_diag can be built as a module, just like it's done in unix sockets. The core dumping message carries the basic info about netlink sockets: family, type and protocol, portis, dst_group, dst_portid, state. Groups can be received as an optional parameter NETLINK_DIAG_GROUPS. Netlink sockets cab be filtered by protocols. The socket inode number and cookie is reserved for future per-socket info retrieving. The per-protocol filtering is also reserved for future by requiring the sdiag_protocol to be zero. The file /proc/net/netlink doesn't provide enough information for dumping netlink sockets. It doesn't provide dst_group, dst_portid, groups above 32. v2: fix NETLINK_DIAG_MAX. Now it's equal to the last constant. Acked-by: Pavel Emelyanov Cc: "David S. Miller" Cc: Eric Dumazet Cc: Pablo Neira Ayuso Cc: "Eric W. Biederman" Cc: Gao feng Cc: Thomas Graf Signed-off-by: Andrey Vagin Signed-off-by: David S. Miller --- include/uapi/linux/netlink_diag.h | 42 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 include/uapi/linux/netlink_diag.h (limited to 'include/uapi') diff --git a/include/uapi/linux/netlink_diag.h b/include/uapi/linux/netlink_diag.h new file mode 100644 index 00000000000..88009a31cd0 --- /dev/null +++ b/include/uapi/linux/netlink_diag.h @@ -0,0 +1,42 @@ +#ifndef __NETLINK_DIAG_H__ +#define __NETLINK_DIAG_H__ + +#include + +struct netlink_diag_req { + __u8 sdiag_family; + __u8 sdiag_protocol; + __u16 pad; + __u32 ndiag_ino; + __u32 ndiag_show; + __u32 ndiag_cookie[2]; +}; + +struct netlink_diag_msg { + __u8 ndiag_family; + __u8 ndiag_type; + __u8 ndiag_protocol; + __u8 ndiag_state; + + __u32 ndiag_portid; + __u32 ndiag_dst_portid; + __u32 ndiag_dst_group; + __u32 ndiag_ino; + __u32 ndiag_cookie[2]; +}; + +enum { + NETLINK_DIAG_MEMINFO, + NETLINK_DIAG_GROUPS, + + __NETLINK_DIAG_MAX, +}; + +#define NETLINK_DIAG_MAX (__NETLINK_DIAG_MAX - 1) + +#define NDIAG_PROTO_ALL ((__u8) ~0) + +#define NDIAG_SHOW_MEMINFO 0x00000001 /* show memory info of a socket */ +#define NDIAG_SHOW_GROUPS 0x00000002 /* show groups of a netlink socket */ + +#endif -- cgit v1.2.3-70-g09d2