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ss: Get netlink sockets info via sock-diag (v2)

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v2: update netlink_diag.h

Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
This commit is contained in:
Andrey Vagin 2013-06-05 12:42:01 +04:00 committed by Stephen Hemminger
parent f271fe011a
commit ecb928c876
2 changed files with 108 additions and 0 deletions
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52
include/linux/netlink_diag.h Normal file
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@ -0,0 +1,52 @@
#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];
};
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,
};
#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 */
#define NDIAG_SHOW_RING_CFG 0x00000004 /* show ring configuration */
#endif

56
misc/ss.c
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@ -39,6 +39,7 @@
#include <linux/netdevice.h> /* for MAX_ADDR_LEN */
#include <linux/filter.h>
#include <linux/packet_diag.h>
#include <linux/netlink_diag.h>
int resolve_hosts = 0;
int resolve_services = 1;
@ -2746,6 +2747,61 @@ static void netlink_show_one(struct filter *f,
return;
}
static int netlink_show_sock(struct nlmsghdr *nlh, struct filter *f)
{
struct netlink_diag_msg *r = NLMSG_DATA(nlh);
struct rtattr *tb[NETLINK_DIAG_MAX+1];
int rq = 0, wq = 0;
unsigned long groups = 0;
parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr*)(r+1),
nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
if (tb[NETLINK_DIAG_MEMINFO]) {
const __u32 *skmeminfo;
skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
}
netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
rq, wq, 0, 0);
if (show_mem) {
printf("\t");
print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
printf("\n");
}
return 0;
}
static int netlink_show_netlink(struct filter *f, FILE *dump_fp)
{
struct {
struct nlmsghdr nlh;
struct netlink_diag_req r;
} req;
memset(&req, 0, sizeof(req));
req.nlh.nlmsg_len = sizeof(req);
req.nlh.nlmsg_type = SOCK_DIAG_BY_FAMILY;
req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
req.nlh.nlmsg_seq = 123456;
req.r.sdiag_family = AF_NETLINK;
req.r.sdiag_protocol = NDIAG_PROTO_ALL;
req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
return handle_netlink_request(f, dump_fp, &req.nlh,
sizeof(req), netlink_show_sock);
}
static int netlink_show(struct filter *f)
{
FILE *fp;