1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* q_etf.c Earliest TxTime First (ETF).
*
* Authors: Vinicius Costa Gomes <vinicius.gomes@intel.com>
* Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include "utils.h"
#include "tc_util.h"
static void explain(void)
{
fprintf(stderr,
"Usage: ... etf delta NANOS clockid CLOCKID [offload] [deadline_mode]\n"
"CLOCKID must be a valid SYS-V id (i.e. CLOCK_TAI)\n");
}
static void explain1(const char *arg, const char *val)
{
fprintf(stderr, "etf: illegal value for \"%s\": \"%s\"\n", arg, val);
}
static void explain_clockid(const char *val)
{
fprintf(stderr,
"etf: illegal value for \"clockid\": \"%s\".\n"
"It must be a valid SYS-V id (i.e. CLOCK_TAI)\n",
val);
}
static int etf_parse_opt(const struct qdisc_util *qu, int argc,
char **argv, struct nlmsghdr *n, const char *dev)
{
struct tc_etf_qopt opt = {
.clockid = CLOCKID_INVALID,
};
struct rtattr *tail;
while (argc > 0) {
if (matches(*argv, "offload") == 0) {
if (opt.flags & TC_ETF_OFFLOAD_ON) {
fprintf(stderr, "etf: duplicate \"offload\" specification\n");
return -1;
}
opt.flags |= TC_ETF_OFFLOAD_ON;
} else if (matches(*argv, "deadline_mode") == 0) {
if (opt.flags & TC_ETF_DEADLINE_MODE_ON) {
fprintf(stderr, "etf: duplicate \"deadline_mode\" specification\n");
return -1;
}
opt.flags |= TC_ETF_DEADLINE_MODE_ON;
} else if (matches(*argv, "delta") == 0) {
NEXT_ARG();
if (opt.delta) {
fprintf(stderr, "etf: duplicate \"delta\" specification\n");
return -1;
}
if (get_s32(&opt.delta, *argv, 0)) {
explain1("delta", *argv);
return -1;
}
} else if (matches(*argv, "clockid") == 0) {
NEXT_ARG();
if (opt.clockid != CLOCKID_INVALID) {
fprintf(stderr, "etf: duplicate \"clockid\" specification\n");
return -1;
}
if (get_clockid(&opt.clockid, *argv)) {
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;
} else {
fprintf(stderr, "etf: unknown parameter \"%s\"\n", *argv);
explain();
return -1;
}
argc--; argv++;
}
tail = NLMSG_TAIL(n);
addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
addattr_l(n, 2024, TCA_ETF_PARMS, &opt, sizeof(opt));
tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
return 0;
}
static int etf_print_opt(const struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
struct rtattr *tb[TCA_ETF_MAX+1];
struct tc_etf_qopt *qopt;
if (opt == NULL)
return 0;
parse_rtattr_nested(tb, TCA_ETF_MAX, opt);
if (tb[TCA_ETF_PARMS] == NULL)
return -1;
qopt = RTA_DATA(tb[TCA_ETF_PARMS]);
if (RTA_PAYLOAD(tb[TCA_ETF_PARMS]) < sizeof(*qopt))
return -1;
print_string(PRINT_ANY, "clockid", "clockid %s ",
get_clock_name(qopt->clockid));
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 ",
(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;
}
struct qdisc_util etf_qdisc_util = {
.id = "etf",
.parse_qopt = etf_parse_opt,
.print_qopt = etf_print_opt,
};
|
