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ss: use new INET_DIAG_SKMEMINFO option to get more memory information for tcp socket

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INET_DIAG_SKMEMINFO is used to monitor socket memory information
which contains more information than INET_DIAG_MEMINFO.

-m option is retained for old kernel that don't surpport INET_DIAG_SKMEMINFO.

Signed-off-by: Shan Wei <davidshan@tencent.com>
This commit is contained in:
Shan Wei 2012-05-03 16:39:52 +08:00 committed by Stephen Hemminger
parent e278088076
commit 910b039771
1 changed files with 14 additions and 2 deletions
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16
misc/ss.c
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@ -1336,7 +1336,17 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r)
parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1),
nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
if (tb[INET_DIAG_MEMINFO]) {
if (tb[INET_DIAG_SKMEMINFO]) {
const __u32 *skmeminfo = RTA_DATA(tb[INET_DIAG_SKMEMINFO]);
printf(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u)",
skmeminfo[SK_MEMINFO_RMEM_ALLOC],
skmeminfo[SK_MEMINFO_RCVBUF],
skmeminfo[SK_MEMINFO_WMEM_ALLOC],
skmeminfo[SK_MEMINFO_SNDBUF],
skmeminfo[SK_MEMINFO_FWD_ALLOC],
skmeminfo[SK_MEMINFO_WMEM_QUEUED],
skmeminfo[SK_MEMINFO_OPTMEM]);
}else if (tb[INET_DIAG_MEMINFO]) {
const struct inet_diag_meminfo *minfo
= RTA_DATA(tb[INET_DIAG_MEMINFO]);
printf(" mem:(r%u,w%u,f%u,t%u)",
@ -1505,8 +1515,10 @@ static int tcp_show_netlink(struct filter *f, FILE *dump_fp, int socktype)
memset(&req.r, 0, sizeof(req.r));
req.r.idiag_family = AF_INET;
req.r.idiag_states = f->states;
if (show_mem)
if (show_mem) {
req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
}
if (show_tcpinfo) {
req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));