1// SPDX-License-Identifier: GPL-2.0
 2
 3#define _GNU_SOURCE
 4#include <test_progs.h>
 5#include <network_helpers.h>
 6#include "test_parse_tcp_hdr_opt.skel.h"
 7#include "test_parse_tcp_hdr_opt_dynptr.skel.h"
 8#include "test_tcp_hdr_options.h"
 9
10struct test_pkt {
11	struct ipv6_packet pk6_v6;
12	u8 options[16];
13} __packed;
14
15struct test_pkt pkt = {
16	.pk6_v6.eth.h_proto = __bpf_constant_htons(ETH_P_IPV6),
17	.pk6_v6.iph.nexthdr = IPPROTO_TCP,
18	.pk6_v6.iph.payload_len = __bpf_constant_htons(MAGIC_BYTES),
19	.pk6_v6.tcp.urg_ptr = 123,
20	.pk6_v6.tcp.doff = 9, /* 16 bytes of options */
21
22	.options = {
23		TCPOPT_MSS, 4, 0x05, 0xB4, TCPOPT_NOP, TCPOPT_NOP,
24		0, 6, 0xBB, 0xBB, 0xBB, 0xBB, TCPOPT_EOL
25	},
26};
27
28static void test_parse_opt(void)
29{
30	struct test_parse_tcp_hdr_opt *skel;
31	struct bpf_program *prog;
32	char buf[128];
33	int err;
34
35	LIBBPF_OPTS(bpf_test_run_opts, topts,
36		    .data_in = &pkt,
37		    .data_size_in = sizeof(pkt),
38		    .data_out = buf,
39		    .data_size_out = sizeof(buf),
40		    .repeat = 3,
41	);
42
43	skel = test_parse_tcp_hdr_opt__open_and_load();
44	if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
45		return;
46
47	pkt.options[6] = skel->rodata->tcp_hdr_opt_kind_tpr;
48	prog = skel->progs.xdp_ingress_v6;
49
50	err = bpf_prog_test_run_opts(bpf_program__fd(prog), &topts);
51	ASSERT_OK(err, "ipv6 test_run");
52	ASSERT_EQ(topts.retval, XDP_PASS, "ipv6 test_run retval");
53	ASSERT_EQ(skel->bss->server_id, 0xBBBBBBBB, "server id");
54
55	test_parse_tcp_hdr_opt__destroy(skel);
56}
57
58static void test_parse_opt_dynptr(void)
59{
60	struct test_parse_tcp_hdr_opt_dynptr *skel;
61	struct bpf_program *prog;
62	char buf[128];
63	int err;
64
65	LIBBPF_OPTS(bpf_test_run_opts, topts,
66		    .data_in = &pkt,
67		    .data_size_in = sizeof(pkt),
68		    .data_out = buf,
69		    .data_size_out = sizeof(buf),
70		    .repeat = 3,
71	);
72
73	skel = test_parse_tcp_hdr_opt_dynptr__open_and_load();
74	if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
75		return;
76
77	pkt.options[6] = skel->rodata->tcp_hdr_opt_kind_tpr;
78	prog = skel->progs.xdp_ingress_v6;
79
80	err = bpf_prog_test_run_opts(bpf_program__fd(prog), &topts);
81	ASSERT_OK(err, "ipv6 test_run");
82	ASSERT_EQ(topts.retval, XDP_PASS, "ipv6 test_run retval");
83	ASSERT_EQ(skel->bss->server_id, 0xBBBBBBBB, "server id");
84
85	test_parse_tcp_hdr_opt_dynptr__destroy(skel);
86}
87
88void test_parse_tcp_hdr_opt(void)
89{
90	if (test__start_subtest("parse_tcp_hdr_opt"))
91		test_parse_opt();
92	if (test__start_subtest("parse_tcp_hdr_opt_dynptr"))
93		test_parse_opt_dynptr();
94}