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etf: Add skip_sock_check

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ETF Qdisc currently checks for a socket with SO_TXTIME socket option. If
either is not present, the packet is dropped. In the future commits, we
want other Qdiscs to add packet with launchtime to the ETF Qdisc. Also,
there are some packets (e.g. ICMP packets) which may not have a socket
associated with them.  So, add an option to skip this check.

Signed-off-by: Vedang Patel <vedang.patel@intel.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
This commit is contained in:
Vedang Patel 2019-07-18 12:55:39 -07:00 committed by David Ahern
parent 86545eaffb
commit d9114263d0
1 changed files with 10 additions and 1 deletions
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11
tc/q_etf.c
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@ -130,6 +130,13 @@ static int etf_parse_opt(struct qdisc_util *qu, int argc,
explain_clockid(*argv);
return -1;
}
} else if (strcmp(*argv, "skip_sock_check") == 0) {
if (opt.flags & TC_ETF_SKIP_SOCK_CHECK) {
fprintf(stderr, "etf: duplicate \"skip_sock_check\" specification\n");
return -1;
}
opt.flags |= TC_ETF_SKIP_SOCK_CHECK;
} else if (strcmp(*argv, "help") == 0) {
explain();
return -1;
@ -171,8 +178,10 @@ static int etf_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
print_uint(PRINT_ANY, "delta", "delta %d ", qopt->delta);
print_string(PRINT_ANY, "offload", "offload %s ",
(qopt->flags & TC_ETF_OFFLOAD_ON) ? "on" : "off");
print_string(PRINT_ANY, "deadline_mode", "deadline_mode %s",
print_string(PRINT_ANY, "deadline_mode", "deadline_mode %s ",
(qopt->flags & TC_ETF_DEADLINE_MODE_ON) ? "on" : "off");
print_string(PRINT_ANY, "skip_sock_check", "skip_sock_check %s",
(qopt->flags & TC_ETF_SKIP_SOCK_CHECK) ? "on" : "off");
return 0;
}