Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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}