1/*
2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
3 * Copyright (c) 2017 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "tests.h"
30
31#include <stdio.h>
32#include <stddef.h>
33#include "test_nlattr.h"
34#include <linux/pkt_sched.h>
35#include <linux/rtnetlink.h>
36
37static void
38init_tcmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
39{
40	SET_STRUCT(struct nlmsghdr, nlh,
41		.nlmsg_len = msg_len,
42		.nlmsg_type = RTM_GETQDISC,
43		.nlmsg_flags = NLM_F_DUMP
44	);
45
46	struct tcmsg *const msg = NLMSG_DATA(nlh);
47	SET_STRUCT(struct tcmsg, msg,
48		.tcm_family = AF_UNIX,
49		.tcm_ifindex = ifindex_lo()
50	);
51
52}
53
54static void
55print_tcmsg(const unsigned int msg_len)
56{
57	printf("{len=%u, type=RTM_GETQDISC, flags=NLM_F_DUMP"
58	       ", seq=0, pid=0}, {tcm_family=AF_UNIX"
59	       ", tcm_ifindex=" IFINDEX_LO_STR
60	       ", tcm_handle=0, tcm_parent=0, tcm_info=0}",
61	       msg_len);
62}
63
64int
65main(void)
66{
67	skip_if_unavailable("/proc/self/fd/");
68
69	const int fd = create_nl_socket(NETLINK_ROUTE);
70	const unsigned int hdrlen = sizeof(struct tcmsg);
71	void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
72
73	static char pattern[4096];
74	fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
75
76	const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
77	char nla_type_str[256];
78	sprintf(nla_type_str, "%#x /* TCA_??? */", nla_type);
79	TEST_NLATTR_(fd, nlh0, hdrlen,
80		     init_tcmsg, print_tcmsg,
81		     nla_type, nla_type_str,
82		     4, pattern, 4,
83		     print_quoted_hex(pattern, 4));
84
85	static const struct tc_stats st = {
86		.bytes = 0xabcdcdbefeadefac,
87		.packets = 0xbcdeaefd,
88		.drops = 0xcdedafed,
89		.overlimits = 0xdcdbefad,
90		.bps = 0xefaebfad,
91		.pps = 0xfefbaedb,
92		.qlen = 0xabcdefab,
93		.backlog = 0xbdeabeab
94	};
95	char buf[offsetofend(struct tc_stats, backlog)];
96	memcpy(buf, &st, sizeof(buf));
97	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
98			   init_tcmsg, print_tcmsg,
99			   TCA_STATS, pattern, buf,
100			   PRINT_FIELD_U("{", st, bytes);
101			   PRINT_FIELD_U(", ", st, packets);
102			   PRINT_FIELD_U(", ", st, drops);
103			   PRINT_FIELD_U(", ", st, overlimits);
104			   PRINT_FIELD_U(", ", st, bps);
105			   PRINT_FIELD_U(", ", st, pps);
106			   PRINT_FIELD_U(", ", st, qlen);
107			   PRINT_FIELD_U(", ", st, backlog);
108			   printf("}"));
109
110	static const struct tc_estimator est = {
111		.interval = 0xcd,
112		.ewma_log = 0xab
113	};
114	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
115			   init_tcmsg, print_tcmsg,
116			   TCA_RATE, pattern, est,
117			   PRINT_FIELD_D("{", est, interval);
118			   PRINT_FIELD_U(", ", est, ewma_log);
119			   printf("}"));
120
121	puts("+++ exited with 0 +++");
122	return 0;
123}
124