tjh.dev
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#include <test_progs.h>
3#include <net/if.h>
4#include "test_xdp.skel.h"
5#include "test_xdp_bpf2bpf.skel.h"
6
7void test_xdp_bpf2bpf(void)
8{
9 __u32 duration = 0, retval, size;
10 char buf[128];
11 int err, pkt_fd, map_fd;
12 struct iphdr *iph = (void *)buf + sizeof(struct ethhdr);
13 struct iptnl_info value4 = {.family = AF_INET};
14 struct test_xdp *pkt_skel = NULL;
15 struct test_xdp_bpf2bpf *ftrace_skel = NULL;
16 struct vip key4 = {.protocol = 6, .family = AF_INET};
17 DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts);
18
19 /* Load XDP program to introspect */
20 pkt_skel = test_xdp__open_and_load();
21 if (CHECK(!pkt_skel, "pkt_skel_load", "test_xdp skeleton failed\n"))
22 return;
23
24 pkt_fd = bpf_program__fd(pkt_skel->progs._xdp_tx_iptunnel);
25
26 map_fd = bpf_map__fd(pkt_skel->maps.vip2tnl);
27 bpf_map_update_elem(map_fd, &key4, &value4, 0);
28
29 /* Load trace program */
30 opts.attach_prog_fd = pkt_fd,
31 ftrace_skel = test_xdp_bpf2bpf__open_opts(&opts);
32 if (CHECK(!ftrace_skel, "__open", "ftrace skeleton failed\n"))
33 goto out;
34
35 err = test_xdp_bpf2bpf__load(ftrace_skel);
36 if (CHECK(err, "__load", "ftrace skeleton failed\n"))
37 goto out;
38
39 err = test_xdp_bpf2bpf__attach(ftrace_skel);
40 if (CHECK(err, "ftrace_attach", "ftrace attach failed: %d\n", err))
41 goto out;
42
43 /* Run test program */
44 err = bpf_prog_test_run(pkt_fd, 1, &pkt_v4, sizeof(pkt_v4),
45 buf, &size, &retval, &duration);
46
47 if (CHECK(err || retval != XDP_TX || size != 74 ||
48 iph->protocol != IPPROTO_IPIP, "ipv4",
49 "err %d errno %d retval %d size %d\n",
50 err, errno, retval, size))
51 goto out;
52
53 /* Verify test results */
54 if (CHECK(ftrace_skel->bss->test_result_fentry != if_nametoindex("lo"),
55 "result", "fentry failed err %llu\n",
56 ftrace_skel->bss->test_result_fentry))
57 goto out;
58
59 CHECK(ftrace_skel->bss->test_result_fexit != XDP_TX, "result",
60 "fexit failed err %llu\n", ftrace_skel->bss->test_result_fexit);
61
62out:
63 test_xdp__destroy(pkt_skel);
64 test_xdp_bpf2bpf__destroy(ftrace_skel);
65}