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| author |   Andrey Vagin <avagin@openvz.org> | 2013-03-21 20:33:48 +0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-03-21 12:38:03 -0400 |
| commit | eaaa31392690c7609f7afeec5ba38a79d009842d (patch) | |
| tree | 226d0deb15b150c1473b5f813414330d28814855 /include | |
| parent | net: prepare netlink code for netlink diag (diff) | |
| download | linux-dev-eaaa31392690c7609f7afeec5ba38a79d009842d.tar.xz linux-dev-eaaa31392690c7609f7afeec5ba38a79d009842d.zip | |
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 <xemul@parallels.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Gao feng <gaofeng@cn.fujitsu.com>
Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/netlink_diag.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/include/uapi/linux/netlink_diag.h b/include/uapi/linux/netlink_diag.h new file mode 100644 index 000000000000..88009a31cd06 --- /dev/null +++ b/include/uapi/linux/netlink_diag.h @@ -0,0 +1,42 @@ +#ifndef __NETLINK_DIAG_H__ +#define __NETLINK_DIAG_H__ + +#include <linux/types.h> + +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 |