1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2020 Cloudflare
4 #include <netinet/tcp.h>
7 #include "test_progs.h"
8 #include "test_skmsg_load_helpers.skel.h"
9 #include "test_sockmap_update.skel.h"
10 #include "test_sockmap_invalid_update.skel.h"
11 #include "test_sockmap_skb_verdict_attach.skel.h"
12 #include "test_sockmap_progs_query.skel.h"
13 #include "test_sockmap_pass_prog.skel.h"
14 #include "test_sockmap_drop_prog.skel.h"
15 #include "test_sockmap_change_tail.skel.h"
16 #include "bpf_iter_sockmap.skel.h"
18 #include "sockmap_helpers.h"
20 #define TCP_REPAIR 19 /* TCP sock is under repair right now */
22 #define TCP_REPAIR_ON 1
23 #define TCP_REPAIR_OFF_NO_WP -1 /* Turn off without window probes */
25 static int connected_socket_v4(void)
27 struct sockaddr_in addr = {
28 .sin_family = AF_INET,
29 .sin_port = htons(80),
30 .sin_addr = { inet_addr("127.0.0.1") },
32 socklen_t len = sizeof(addr);
35 s = socket(AF_INET, SOCK_STREAM, 0);
36 if (!ASSERT_GE(s, 0, "socket"))
39 repair = TCP_REPAIR_ON;
40 err = setsockopt(s, SOL_TCP, TCP_REPAIR, &repair, sizeof(repair));
41 if (!ASSERT_OK(err, "setsockopt(TCP_REPAIR)"))
44 err = connect(s, (struct sockaddr *)&addr, len);
45 if (!ASSERT_OK(err, "connect"))
48 repair = TCP_REPAIR_OFF_NO_WP;
49 err = setsockopt(s, SOL_TCP, TCP_REPAIR, &repair, sizeof(repair));
50 if (!ASSERT_OK(err, "setsockopt(TCP_REPAIR)"))
60 static void compare_cookies(struct bpf_map *src, struct bpf_map *dst)
62 __u32 i, max_entries = bpf_map__max_entries(src);
63 int err, src_fd, dst_fd;
65 src_fd = bpf_map__fd(src);
66 dst_fd = bpf_map__fd(dst);
68 for (i = 0; i < max_entries; i++) {
69 __u64 src_cookie, dst_cookie;
71 err = bpf_map_lookup_elem(src_fd, &i, &src_cookie);
72 if (err && errno == ENOENT) {
73 err = bpf_map_lookup_elem(dst_fd, &i, &dst_cookie);
74 ASSERT_ERR(err, "map_lookup_elem(dst)");
75 ASSERT_EQ(errno, ENOENT, "map_lookup_elem(dst)");
78 if (!ASSERT_OK(err, "lookup_elem(src)"))
81 err = bpf_map_lookup_elem(dst_fd, &i, &dst_cookie);
82 if (!ASSERT_OK(err, "lookup_elem(dst)"))
85 ASSERT_EQ(dst_cookie, src_cookie, "cookie mismatch");
89 /* Create a map, populate it with one socket, and free the map. */
90 static void test_sockmap_create_update_free(enum bpf_map_type map_type)
95 s = connected_socket_v4();
96 if (!ASSERT_GE(s, 0, "connected_socket_v4"))
99 map = bpf_map_create(map_type, NULL, sizeof(int), sizeof(int), 1, NULL);
100 if (!ASSERT_GE(map, 0, "bpf_map_create"))
103 err = bpf_map_update_elem(map, &zero, &s, BPF_NOEXIST);
104 if (!ASSERT_OK(err, "bpf_map_update"))
112 static void test_sockmap_vsock_delete_on_close(void)
117 err = create_pair(AF_VSOCK, SOCK_STREAM, &c, &p);
118 if (!ASSERT_OK(err, "create_pair(AF_VSOCK)"))
121 map = bpf_map_create(BPF_MAP_TYPE_SOCKMAP, NULL, sizeof(int),
122 sizeof(int), 1, NULL);
123 if (!ASSERT_GE(map, 0, "bpf_map_create")) {
128 err = bpf_map_update_elem(map, &zero, &c, BPF_NOEXIST);
130 if (!ASSERT_OK(err, "bpf_map_update"))
133 err = bpf_map_update_elem(map, &zero, &p, BPF_NOEXIST);
134 ASSERT_OK(err, "after close(), bpf_map_update");
141 static void test_skmsg_helpers(enum bpf_map_type map_type)
143 struct test_skmsg_load_helpers *skel;
144 int err, map, verdict;
146 skel = test_skmsg_load_helpers__open_and_load();
147 if (!ASSERT_OK_PTR(skel, "test_skmsg_load_helpers__open_and_load"))
150 verdict = bpf_program__fd(skel->progs.prog_msg_verdict);
151 map = bpf_map__fd(skel->maps.sock_map);
153 err = bpf_prog_attach(verdict, map, BPF_SK_MSG_VERDICT, 0);
154 if (!ASSERT_OK(err, "bpf_prog_attach"))
157 err = bpf_prog_detach2(verdict, map, BPF_SK_MSG_VERDICT);
158 if (!ASSERT_OK(err, "bpf_prog_detach2"))
161 test_skmsg_load_helpers__destroy(skel);
164 static void test_skmsg_helpers_with_link(enum bpf_map_type map_type)
166 struct bpf_program *prog, *prog_clone, *prog_clone2;
167 DECLARE_LIBBPF_OPTS(bpf_link_update_opts, opts);
168 struct test_skmsg_load_helpers *skel;
169 struct bpf_link *link, *link2;
172 skel = test_skmsg_load_helpers__open_and_load();
173 if (!ASSERT_OK_PTR(skel, "test_skmsg_load_helpers__open_and_load"))
176 prog = skel->progs.prog_msg_verdict;
177 prog_clone = skel->progs.prog_msg_verdict_clone;
178 prog_clone2 = skel->progs.prog_msg_verdict_clone2;
179 map = bpf_map__fd(skel->maps.sock_map);
181 link = bpf_program__attach_sockmap(prog, map);
182 if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))
185 /* Fail since bpf_link for the same prog has been created. */
186 err = bpf_prog_attach(bpf_program__fd(prog), map, BPF_SK_MSG_VERDICT, 0);
187 if (!ASSERT_ERR(err, "bpf_prog_attach"))
190 /* Fail since bpf_link for the same prog type has been created. */
191 link2 = bpf_program__attach_sockmap(prog_clone, map);
192 if (!ASSERT_ERR_PTR(link2, "bpf_program__attach_sockmap")) {
193 bpf_link__detach(link2);
197 err = bpf_link__update_program(link, prog_clone);
198 if (!ASSERT_OK(err, "bpf_link__update_program"))
201 /* Fail since a prog with different type attempts to do update. */
202 err = bpf_link__update_program(link, skel->progs.prog_skb_verdict);
203 if (!ASSERT_ERR(err, "bpf_link__update_program"))
206 /* Fail since the old prog does not match the one in the kernel. */
207 opts.old_prog_fd = bpf_program__fd(prog_clone2);
208 opts.flags = BPF_F_REPLACE;
209 err = bpf_link_update(bpf_link__fd(link), bpf_program__fd(prog), &opts);
210 if (!ASSERT_ERR(err, "bpf_link_update"))
213 opts.old_prog_fd = bpf_program__fd(prog_clone);
214 opts.flags = BPF_F_REPLACE;
215 err = bpf_link_update(bpf_link__fd(link), bpf_program__fd(prog), &opts);
216 if (!ASSERT_OK(err, "bpf_link_update"))
219 bpf_link__detach(link);
220 test_skmsg_load_helpers__destroy(skel);
223 static void test_sockmap_update(enum bpf_map_type map_type)
226 struct test_sockmap_update *skel;
227 struct bpf_map *dst_map;
228 const __u32 zero = 0;
229 char dummy[14] = {0};
230 LIBBPF_OPTS(bpf_test_run_opts, topts,
232 .data_size_in = sizeof(dummy),
237 sk = connected_socket_v4();
238 if (!ASSERT_NEQ(sk, -1, "connected_socket_v4"))
241 skel = test_sockmap_update__open_and_load();
242 if (!ASSERT_OK_PTR(skel, "open_and_load"))
245 prog = bpf_program__fd(skel->progs.copy_sock_map);
246 src = bpf_map__fd(skel->maps.src);
247 if (map_type == BPF_MAP_TYPE_SOCKMAP)
248 dst_map = skel->maps.dst_sock_map;
250 dst_map = skel->maps.dst_sock_hash;
252 err = bpf_map_update_elem(src, &zero, &sk, BPF_NOEXIST);
253 if (!ASSERT_OK(err, "update_elem(src)"))
256 err = bpf_prog_test_run_opts(prog, &topts);
257 if (!ASSERT_OK(err, "test_run"))
259 if (!ASSERT_NEQ(topts.retval, 0, "test_run retval"))
262 compare_cookies(skel->maps.src, dst_map);
265 test_sockmap_update__destroy(skel);
270 static void test_sockmap_invalid_update(void)
272 struct test_sockmap_invalid_update *skel;
274 skel = test_sockmap_invalid_update__open_and_load();
275 if (!ASSERT_NULL(skel, "open_and_load"))
276 test_sockmap_invalid_update__destroy(skel);
279 static void test_sockmap_copy(enum bpf_map_type map_type)
281 DECLARE_LIBBPF_OPTS(bpf_iter_attach_opts, opts);
282 int err, len, src_fd, iter_fd;
283 union bpf_iter_link_info linfo = {};
284 __u32 i, num_sockets, num_elems;
285 struct bpf_iter_sockmap *skel;
286 __s64 *sock_fd = NULL;
287 struct bpf_link *link;
291 skel = bpf_iter_sockmap__open_and_load();
292 if (!ASSERT_OK_PTR(skel, "bpf_iter_sockmap__open_and_load"))
295 if (map_type == BPF_MAP_TYPE_SOCKMAP) {
296 src = skel->maps.sockmap;
297 num_elems = bpf_map__max_entries(src);
298 num_sockets = num_elems - 1;
300 src = skel->maps.sockhash;
301 num_elems = bpf_map__max_entries(src) - 1;
302 num_sockets = num_elems;
305 sock_fd = calloc(num_sockets, sizeof(*sock_fd));
306 if (!ASSERT_OK_PTR(sock_fd, "calloc(sock_fd)"))
309 for (i = 0; i < num_sockets; i++)
312 src_fd = bpf_map__fd(src);
314 for (i = 0; i < num_sockets; i++) {
315 sock_fd[i] = connected_socket_v4();
316 if (!ASSERT_NEQ(sock_fd[i], -1, "connected_socket_v4"))
319 err = bpf_map_update_elem(src_fd, &i, &sock_fd[i], BPF_NOEXIST);
320 if (!ASSERT_OK(err, "map_update"))
324 linfo.map.map_fd = src_fd;
325 opts.link_info = &linfo;
326 opts.link_info_len = sizeof(linfo);
327 link = bpf_program__attach_iter(skel->progs.copy, &opts);
328 if (!ASSERT_OK_PTR(link, "attach_iter"))
331 iter_fd = bpf_iter_create(bpf_link__fd(link));
332 if (!ASSERT_GE(iter_fd, 0, "create_iter"))
336 while ((len = read(iter_fd, buf, sizeof(buf))) > 0)
338 if (!ASSERT_GE(len, 0, "read"))
342 if (!ASSERT_EQ(skel->bss->elems, num_elems, "elems"))
345 if (!ASSERT_EQ(skel->bss->socks, num_sockets, "socks"))
348 compare_cookies(src, skel->maps.dst);
353 bpf_link__destroy(link);
355 for (i = 0; sock_fd && i < num_sockets; i++)
360 bpf_iter_sockmap__destroy(skel);
363 static void test_sockmap_skb_verdict_attach(enum bpf_attach_type first,
364 enum bpf_attach_type second)
366 struct test_sockmap_skb_verdict_attach *skel;
367 int err, map, verdict;
369 skel = test_sockmap_skb_verdict_attach__open_and_load();
370 if (!ASSERT_OK_PTR(skel, "open_and_load"))
373 verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
374 map = bpf_map__fd(skel->maps.sock_map);
376 err = bpf_prog_attach(verdict, map, first, 0);
377 if (!ASSERT_OK(err, "bpf_prog_attach"))
380 err = bpf_prog_attach(verdict, map, second, 0);
381 ASSERT_EQ(err, -EBUSY, "prog_attach_fail");
383 err = bpf_prog_detach2(verdict, map, first);
384 if (!ASSERT_OK(err, "bpf_prog_detach2"))
387 test_sockmap_skb_verdict_attach__destroy(skel);
390 static void test_sockmap_skb_verdict_attach_with_link(void)
392 struct test_sockmap_skb_verdict_attach *skel;
393 struct bpf_program *prog;
394 struct bpf_link *link;
397 skel = test_sockmap_skb_verdict_attach__open_and_load();
398 if (!ASSERT_OK_PTR(skel, "open_and_load"))
400 prog = skel->progs.prog_skb_verdict;
401 map = bpf_map__fd(skel->maps.sock_map);
402 link = bpf_program__attach_sockmap(prog, map);
403 if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))
406 bpf_link__detach(link);
408 err = bpf_prog_attach(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_VERDICT, 0);
409 if (!ASSERT_OK(err, "bpf_prog_attach"))
412 /* Fail since attaching with the same prog/map has been done. */
413 link = bpf_program__attach_sockmap(prog, map);
414 if (!ASSERT_ERR_PTR(link, "bpf_program__attach_sockmap"))
415 bpf_link__detach(link);
417 err = bpf_prog_detach2(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_VERDICT);
418 if (!ASSERT_OK(err, "bpf_prog_detach2"))
421 test_sockmap_skb_verdict_attach__destroy(skel);
424 static __u32 query_prog_id(int prog_fd)
426 struct bpf_prog_info info = {};
427 __u32 info_len = sizeof(info);
430 err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len);
431 if (!ASSERT_OK(err, "bpf_prog_get_info_by_fd") ||
432 !ASSERT_EQ(info_len, sizeof(info), "bpf_prog_get_info_by_fd"))
438 static void test_sockmap_progs_query(enum bpf_attach_type attach_type)
440 struct test_sockmap_progs_query *skel;
441 int err, map_fd, verdict_fd;
442 __u32 attach_flags = 0;
443 __u32 prog_ids[3] = {};
446 skel = test_sockmap_progs_query__open_and_load();
447 if (!ASSERT_OK_PTR(skel, "test_sockmap_progs_query__open_and_load"))
450 map_fd = bpf_map__fd(skel->maps.sock_map);
452 if (attach_type == BPF_SK_MSG_VERDICT)
453 verdict_fd = bpf_program__fd(skel->progs.prog_skmsg_verdict);
455 verdict_fd = bpf_program__fd(skel->progs.prog_skb_verdict);
457 err = bpf_prog_query(map_fd, attach_type, 0 /* query flags */,
458 &attach_flags, prog_ids, &prog_cnt);
459 ASSERT_OK(err, "bpf_prog_query failed");
460 ASSERT_EQ(attach_flags, 0, "wrong attach_flags on query");
461 ASSERT_EQ(prog_cnt, 0, "wrong program count on query");
463 err = bpf_prog_attach(verdict_fd, map_fd, attach_type, 0);
464 if (!ASSERT_OK(err, "bpf_prog_attach failed"))
468 err = bpf_prog_query(map_fd, attach_type, 0 /* query flags */,
469 &attach_flags, prog_ids, &prog_cnt);
470 ASSERT_OK(err, "bpf_prog_query failed");
471 ASSERT_EQ(attach_flags, 0, "wrong attach_flags on query");
472 ASSERT_EQ(prog_cnt, 1, "wrong program count on query");
473 ASSERT_EQ(prog_ids[0], query_prog_id(verdict_fd),
474 "wrong prog_ids on query");
476 bpf_prog_detach2(verdict_fd, map_fd, attach_type);
478 test_sockmap_progs_query__destroy(skel);
481 #define MAX_EVENTS 10
482 static void test_sockmap_skb_verdict_shutdown(void)
484 int n, err, map, verdict, c1 = -1, p1 = -1;
485 struct epoll_event ev, events[MAX_EVENTS];
486 struct test_sockmap_pass_prog *skel;
491 skel = test_sockmap_pass_prog__open_and_load();
492 if (!ASSERT_OK_PTR(skel, "open_and_load"))
495 verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
496 map = bpf_map__fd(skel->maps.sock_map_rx);
498 err = bpf_prog_attach(verdict, map, BPF_SK_SKB_STREAM_VERDICT, 0);
499 if (!ASSERT_OK(err, "bpf_prog_attach"))
502 err = create_pair(AF_INET, SOCK_STREAM, &c1, &p1);
506 err = bpf_map_update_elem(map, &zero, &c1, BPF_NOEXIST);
510 shutdown(p1, SHUT_WR);
515 epollfd = epoll_create1(0);
516 if (!ASSERT_GT(epollfd, -1, "epoll_create(0)"))
518 err = epoll_ctl(epollfd, EPOLL_CTL_ADD, c1, &ev);
519 if (!ASSERT_OK(err, "epoll_ctl(EPOLL_CTL_ADD)"))
521 err = epoll_wait(epollfd, events, MAX_EVENTS, -1);
522 if (!ASSERT_EQ(err, 1, "epoll_wait(fd)"))
525 n = recv(c1, &b, 1, SOCK_NONBLOCK);
526 ASSERT_EQ(n, 0, "recv_timeout(fin)");
531 test_sockmap_pass_prog__destroy(skel);
534 static void test_sockmap_stream_pass(void)
536 int zero = 0, sent, recvd;
540 struct test_sockmap_pass_prog *pass = NULL;
541 char snd[256] = "0123456789";
544 pass = test_sockmap_pass_prog__open_and_load();
545 verdict = bpf_program__fd(pass->progs.prog_skb_verdict);
546 parser = bpf_program__fd(pass->progs.prog_skb_parser);
547 map = bpf_map__fd(pass->maps.sock_map_rx);
549 err = bpf_prog_attach(parser, map, BPF_SK_SKB_STREAM_PARSER, 0);
550 if (!ASSERT_OK(err, "bpf_prog_attach stream parser"))
553 err = bpf_prog_attach(verdict, map, BPF_SK_SKB_STREAM_VERDICT, 0);
554 if (!ASSERT_OK(err, "bpf_prog_attach stream verdict"))
557 err = create_pair(AF_INET, SOCK_STREAM, &c, &p);
561 /* sk_data_ready of 'p' will be replaced by strparser handler */
562 err = bpf_map_update_elem(map, &zero, &p, BPF_NOEXIST);
563 if (!ASSERT_OK(err, "bpf_map_update_elem(p)"))
567 * as 'prog_skb_parser' return the original skb len and
568 * 'prog_skb_verdict' return SK_PASS, the kernel will just
569 * pass it through to original socket 'p'
571 sent = xsend(c, snd, sizeof(snd), 0);
572 ASSERT_EQ(sent, sizeof(snd), "xsend(c)");
574 recvd = recv_timeout(p, rcv, sizeof(rcv), SOCK_NONBLOCK,
576 ASSERT_EQ(recvd, sizeof(rcv), "recv_timeout(p)");
583 test_sockmap_pass_prog__destroy(pass);
586 static void test_sockmap_skb_verdict_fionread(bool pass_prog)
588 int err, map, verdict, c0 = -1, c1 = -1, p0 = -1, p1 = -1;
589 int expected, zero = 0, sent, recvd, avail;
590 struct test_sockmap_pass_prog *pass = NULL;
591 struct test_sockmap_drop_prog *drop = NULL;
592 char buf[256] = "0123456789";
595 pass = test_sockmap_pass_prog__open_and_load();
596 if (!ASSERT_OK_PTR(pass, "open_and_load"))
598 verdict = bpf_program__fd(pass->progs.prog_skb_verdict);
599 map = bpf_map__fd(pass->maps.sock_map_rx);
600 expected = sizeof(buf);
602 drop = test_sockmap_drop_prog__open_and_load();
603 if (!ASSERT_OK_PTR(drop, "open_and_load"))
605 verdict = bpf_program__fd(drop->progs.prog_skb_verdict);
606 map = bpf_map__fd(drop->maps.sock_map_rx);
607 /* On drop data is consumed immediately and copied_seq inc'd */
612 err = bpf_prog_attach(verdict, map, BPF_SK_SKB_STREAM_VERDICT, 0);
613 if (!ASSERT_OK(err, "bpf_prog_attach"))
616 err = create_socket_pairs(AF_INET, SOCK_STREAM, &c0, &c1, &p0, &p1);
617 if (!ASSERT_OK(err, "create_socket_pairs()"))
620 err = bpf_map_update_elem(map, &zero, &c1, BPF_NOEXIST);
621 if (!ASSERT_OK(err, "bpf_map_update_elem(c1)"))
624 sent = xsend(p1, &buf, sizeof(buf), 0);
625 ASSERT_EQ(sent, sizeof(buf), "xsend(p0)");
626 err = ioctl(c1, FIONREAD, &avail);
627 ASSERT_OK(err, "ioctl(FIONREAD) error");
628 ASSERT_EQ(avail, expected, "ioctl(FIONREAD)");
629 /* On DROP test there will be no data to read */
631 recvd = recv_timeout(c1, &buf, sizeof(buf), SOCK_NONBLOCK, IO_TIMEOUT_SEC);
632 ASSERT_EQ(recvd, sizeof(buf), "recv_timeout(c0)");
642 test_sockmap_pass_prog__destroy(pass);
644 test_sockmap_drop_prog__destroy(drop);
647 static void test_sockmap_skb_verdict_change_tail(void)
649 struct test_sockmap_change_tail *skel;
650 int err, map, verdict;
651 int c1, p1, sent, recvd;
655 skel = test_sockmap_change_tail__open_and_load();
656 if (!ASSERT_OK_PTR(skel, "open_and_load"))
658 verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
659 map = bpf_map__fd(skel->maps.sock_map_rx);
661 err = bpf_prog_attach(verdict, map, BPF_SK_SKB_STREAM_VERDICT, 0);
662 if (!ASSERT_OK(err, "bpf_prog_attach"))
664 err = create_pair(AF_INET, SOCK_STREAM, &c1, &p1);
665 if (!ASSERT_OK(err, "create_pair()"))
667 err = bpf_map_update_elem(map, &zero, &c1, BPF_NOEXIST);
668 if (!ASSERT_OK(err, "bpf_map_update_elem(c1)"))
670 sent = xsend(p1, "Tr", 2, 0);
671 ASSERT_EQ(sent, 2, "xsend(p1)");
672 recvd = recv(c1, buf, 2, 0);
673 ASSERT_EQ(recvd, 1, "recv(c1)");
674 ASSERT_EQ(skel->data->change_tail_ret, 0, "change_tail_ret");
676 sent = xsend(p1, "G", 1, 0);
677 ASSERT_EQ(sent, 1, "xsend(p1)");
678 recvd = recv(c1, buf, 2, 0);
679 ASSERT_EQ(recvd, 2, "recv(c1)");
680 ASSERT_EQ(skel->data->change_tail_ret, 0, "change_tail_ret");
682 sent = xsend(p1, "E", 1, 0);
683 ASSERT_EQ(sent, 1, "xsend(p1)");
684 recvd = recv(c1, buf, 1, 0);
685 ASSERT_EQ(recvd, 1, "recv(c1)");
686 ASSERT_EQ(skel->data->change_tail_ret, -EINVAL, "change_tail_ret");
692 test_sockmap_change_tail__destroy(skel);
695 static void test_sockmap_skb_verdict_peek_helper(int map)
697 int err, c1, p1, zero = 0, sent, recvd, avail;
698 char snd[256] = "0123456789";
701 err = create_pair(AF_INET, SOCK_STREAM, &c1, &p1);
702 if (!ASSERT_OK(err, "create_pair()"))
705 err = bpf_map_update_elem(map, &zero, &c1, BPF_NOEXIST);
706 if (!ASSERT_OK(err, "bpf_map_update_elem(c1)"))
709 sent = xsend(p1, snd, sizeof(snd), 0);
710 ASSERT_EQ(sent, sizeof(snd), "xsend(p1)");
711 recvd = recv(c1, rcv, sizeof(rcv), MSG_PEEK);
712 ASSERT_EQ(recvd, sizeof(rcv), "recv(c1)");
713 err = ioctl(c1, FIONREAD, &avail);
714 ASSERT_OK(err, "ioctl(FIONREAD) error");
715 ASSERT_EQ(avail, sizeof(snd), "after peek ioctl(FIONREAD)");
716 recvd = recv(c1, rcv, sizeof(rcv), 0);
717 ASSERT_EQ(recvd, sizeof(rcv), "recv(p0)");
718 err = ioctl(c1, FIONREAD, &avail);
719 ASSERT_OK(err, "ioctl(FIONREAD) error");
720 ASSERT_EQ(avail, 0, "after read ioctl(FIONREAD)");
727 static void test_sockmap_skb_verdict_peek(void)
729 struct test_sockmap_pass_prog *pass;
730 int err, map, verdict;
732 pass = test_sockmap_pass_prog__open_and_load();
733 if (!ASSERT_OK_PTR(pass, "open_and_load"))
735 verdict = bpf_program__fd(pass->progs.prog_skb_verdict);
736 map = bpf_map__fd(pass->maps.sock_map_rx);
738 err = bpf_prog_attach(verdict, map, BPF_SK_SKB_STREAM_VERDICT, 0);
739 if (!ASSERT_OK(err, "bpf_prog_attach"))
742 test_sockmap_skb_verdict_peek_helper(map);
745 test_sockmap_pass_prog__destroy(pass);
748 static void test_sockmap_skb_verdict_peek_with_link(void)
750 struct test_sockmap_pass_prog *pass;
751 struct bpf_program *prog;
752 struct bpf_link *link;
755 pass = test_sockmap_pass_prog__open_and_load();
756 if (!ASSERT_OK_PTR(pass, "open_and_load"))
758 prog = pass->progs.prog_skb_verdict;
759 map = bpf_map__fd(pass->maps.sock_map_rx);
760 link = bpf_program__attach_sockmap(prog, map);
761 if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))
764 err = bpf_link__update_program(link, pass->progs.prog_skb_verdict_clone);
765 if (!ASSERT_OK(err, "bpf_link__update_program"))
768 /* Fail since a prog with different attach type attempts to do update. */
769 err = bpf_link__update_program(link, pass->progs.prog_skb_parser);
770 if (!ASSERT_ERR(err, "bpf_link__update_program"))
773 test_sockmap_skb_verdict_peek_helper(map);
774 ASSERT_EQ(pass->bss->clone_called, 1, "clone_called");
776 bpf_link__detach(link);
777 test_sockmap_pass_prog__destroy(pass);
780 static void test_sockmap_unconnected_unix(void)
782 int err, map, stream = 0, dgram = 0, zero = 0;
783 struct test_sockmap_pass_prog *skel;
785 skel = test_sockmap_pass_prog__open_and_load();
786 if (!ASSERT_OK_PTR(skel, "open_and_load"))
789 map = bpf_map__fd(skel->maps.sock_map_rx);
791 stream = xsocket(AF_UNIX, SOCK_STREAM, 0);
795 dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
801 err = bpf_map_update_elem(map, &zero, &stream, BPF_ANY);
802 ASSERT_ERR(err, "bpf_map_update_elem(stream)");
804 err = bpf_map_update_elem(map, &zero, &dgram, BPF_ANY);
805 ASSERT_OK(err, "bpf_map_update_elem(dgram)");
811 static void test_sockmap_many_socket(void)
813 struct test_sockmap_pass_prog *skel;
814 int stream[2], dgram, udp, tcp;
815 int i, err, map, entry = 0;
817 skel = test_sockmap_pass_prog__open_and_load();
818 if (!ASSERT_OK_PTR(skel, "open_and_load"))
821 map = bpf_map__fd(skel->maps.sock_map_rx);
823 dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
825 test_sockmap_pass_prog__destroy(skel);
829 tcp = connected_socket_v4();
830 if (!ASSERT_GE(tcp, 0, "connected_socket_v4")) {
832 test_sockmap_pass_prog__destroy(skel);
836 udp = xsocket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, 0);
840 test_sockmap_pass_prog__destroy(skel);
844 err = socketpair(AF_UNIX, SOCK_STREAM, 0, stream);
845 ASSERT_OK(err, "socketpair(af_unix, sock_stream)");
849 for (i = 0; i < 2; i++, entry++) {
850 err = bpf_map_update_elem(map, &entry, &stream[0], BPF_ANY);
851 ASSERT_OK(err, "bpf_map_update_elem(stream)");
853 for (i = 0; i < 2; i++, entry++) {
854 err = bpf_map_update_elem(map, &entry, &dgram, BPF_ANY);
855 ASSERT_OK(err, "bpf_map_update_elem(dgram)");
857 for (i = 0; i < 2; i++, entry++) {
858 err = bpf_map_update_elem(map, &entry, &udp, BPF_ANY);
859 ASSERT_OK(err, "bpf_map_update_elem(udp)");
861 for (i = 0; i < 2; i++, entry++) {
862 err = bpf_map_update_elem(map, &entry, &tcp, BPF_ANY);
863 ASSERT_OK(err, "bpf_map_update_elem(tcp)");
865 for (entry--; entry >= 0; entry--) {
866 err = bpf_map_delete_elem(map, &entry);
867 ASSERT_OK(err, "bpf_map_delete_elem(entry)");
876 test_sockmap_pass_prog__destroy(skel);
879 static void test_sockmap_many_maps(void)
881 struct test_sockmap_pass_prog *skel;
882 int stream[2], dgram, udp, tcp;
883 int i, err, map[2], entry = 0;
885 skel = test_sockmap_pass_prog__open_and_load();
886 if (!ASSERT_OK_PTR(skel, "open_and_load"))
889 map[0] = bpf_map__fd(skel->maps.sock_map_rx);
890 map[1] = bpf_map__fd(skel->maps.sock_map_tx);
892 dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
894 test_sockmap_pass_prog__destroy(skel);
898 tcp = connected_socket_v4();
899 if (!ASSERT_GE(tcp, 0, "connected_socket_v4")) {
901 test_sockmap_pass_prog__destroy(skel);
905 udp = xsocket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, 0);
909 test_sockmap_pass_prog__destroy(skel);
913 err = socketpair(AF_UNIX, SOCK_STREAM, 0, stream);
914 ASSERT_OK(err, "socketpair(af_unix, sock_stream)");
918 for (i = 0; i < 2; i++, entry++) {
919 err = bpf_map_update_elem(map[i], &entry, &stream[0], BPF_ANY);
920 ASSERT_OK(err, "bpf_map_update_elem(stream)");
922 for (i = 0; i < 2; i++, entry++) {
923 err = bpf_map_update_elem(map[i], &entry, &dgram, BPF_ANY);
924 ASSERT_OK(err, "bpf_map_update_elem(dgram)");
926 for (i = 0; i < 2; i++, entry++) {
927 err = bpf_map_update_elem(map[i], &entry, &udp, BPF_ANY);
928 ASSERT_OK(err, "bpf_map_update_elem(udp)");
930 for (i = 0; i < 2; i++, entry++) {
931 err = bpf_map_update_elem(map[i], &entry, &tcp, BPF_ANY);
932 ASSERT_OK(err, "bpf_map_update_elem(tcp)");
934 for (entry--; entry >= 0; entry--) {
935 err = bpf_map_delete_elem(map[1], &entry);
937 ASSERT_OK(err, "bpf_map_delete_elem(entry)");
938 err = bpf_map_delete_elem(map[0], &entry);
939 ASSERT_OK(err, "bpf_map_delete_elem(entry)");
948 test_sockmap_pass_prog__destroy(skel);
951 static void test_sockmap_same_sock(void)
953 struct test_sockmap_pass_prog *skel;
954 int stream[2], dgram, udp, tcp;
955 int i, err, map, zero = 0;
957 skel = test_sockmap_pass_prog__open_and_load();
958 if (!ASSERT_OK_PTR(skel, "open_and_load"))
961 map = bpf_map__fd(skel->maps.sock_map_rx);
963 dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
965 test_sockmap_pass_prog__destroy(skel);
969 tcp = connected_socket_v4();
970 if (!ASSERT_GE(tcp, 0, "connected_socket_v4")) {
972 test_sockmap_pass_prog__destroy(skel);
976 udp = xsocket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, 0);
980 test_sockmap_pass_prog__destroy(skel);
984 err = socketpair(AF_UNIX, SOCK_STREAM, 0, stream);
985 ASSERT_OK(err, "socketpair(af_unix, sock_stream)");
991 for (i = 0; i < 2; i++) {
992 err = bpf_map_update_elem(map, &zero, &stream[0], BPF_ANY);
993 ASSERT_OK(err, "bpf_map_update_elem(stream)");
995 for (i = 0; i < 2; i++) {
996 err = bpf_map_update_elem(map, &zero, &dgram, BPF_ANY);
997 ASSERT_OK(err, "bpf_map_update_elem(dgram)");
999 for (i = 0; i < 2; i++) {
1000 err = bpf_map_update_elem(map, &zero, &udp, BPF_ANY);
1001 ASSERT_OK(err, "bpf_map_update_elem(udp)");
1003 for (i = 0; i < 2; i++) {
1004 err = bpf_map_update_elem(map, &zero, &tcp, BPF_ANY);
1005 ASSERT_OK(err, "bpf_map_update_elem(tcp)");
1009 err = bpf_map_delete_elem(map, &zero);
1010 ASSERT_ERR(err, "bpf_map_delete_elem(entry)");
1017 test_sockmap_pass_prog__destroy(skel);
1020 static void test_sockmap_skb_verdict_vsock_poll(void)
1022 struct test_sockmap_pass_prog *skel;
1023 int err, map, conn, peer;
1024 struct bpf_program *prog;
1025 struct bpf_link *link;
1029 skel = test_sockmap_pass_prog__open_and_load();
1030 if (!ASSERT_OK_PTR(skel, "open_and_load"))
1033 if (create_pair(AF_VSOCK, SOCK_STREAM, &conn, &peer))
1036 prog = skel->progs.prog_skb_verdict;
1037 map = bpf_map__fd(skel->maps.sock_map_rx);
1038 link = bpf_program__attach_sockmap(prog, map);
1039 if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))
1042 err = bpf_map_update_elem(map, &zero, &conn, BPF_ANY);
1043 if (!ASSERT_OK(err, "bpf_map_update_elem"))
1046 if (xsend(peer, &buf, 1, 0) != 1)
1049 err = poll_read(conn, IO_TIMEOUT_SEC);
1050 if (!ASSERT_OK(err, "poll"))
1053 if (xrecv_nonblock(conn, &buf, 1, 0) != 1)
1054 FAIL("xrecv_nonblock");
1056 bpf_link__detach(link);
1061 test_sockmap_pass_prog__destroy(skel);
1064 void test_sockmap_basic(void)
1066 if (test__start_subtest("sockmap create_update_free"))
1067 test_sockmap_create_update_free(BPF_MAP_TYPE_SOCKMAP);
1068 if (test__start_subtest("sockhash create_update_free"))
1069 test_sockmap_create_update_free(BPF_MAP_TYPE_SOCKHASH);
1070 if (test__start_subtest("sockmap vsock delete on close"))
1071 test_sockmap_vsock_delete_on_close();
1072 if (test__start_subtest("sockmap sk_msg load helpers"))
1073 test_skmsg_helpers(BPF_MAP_TYPE_SOCKMAP);
1074 if (test__start_subtest("sockhash sk_msg load helpers"))
1075 test_skmsg_helpers(BPF_MAP_TYPE_SOCKHASH);
1076 if (test__start_subtest("sockmap update"))
1077 test_sockmap_update(BPF_MAP_TYPE_SOCKMAP);
1078 if (test__start_subtest("sockhash update"))
1079 test_sockmap_update(BPF_MAP_TYPE_SOCKHASH);
1080 if (test__start_subtest("sockmap update in unsafe context"))
1081 test_sockmap_invalid_update();
1082 if (test__start_subtest("sockmap copy"))
1083 test_sockmap_copy(BPF_MAP_TYPE_SOCKMAP);
1084 if (test__start_subtest("sockhash copy"))
1085 test_sockmap_copy(BPF_MAP_TYPE_SOCKHASH);
1086 if (test__start_subtest("sockmap skb_verdict attach")) {
1087 test_sockmap_skb_verdict_attach(BPF_SK_SKB_VERDICT,
1088 BPF_SK_SKB_STREAM_VERDICT);
1089 test_sockmap_skb_verdict_attach(BPF_SK_SKB_STREAM_VERDICT,
1090 BPF_SK_SKB_VERDICT);
1092 if (test__start_subtest("sockmap skb_verdict attach_with_link"))
1093 test_sockmap_skb_verdict_attach_with_link();
1094 if (test__start_subtest("sockmap msg_verdict progs query"))
1095 test_sockmap_progs_query(BPF_SK_MSG_VERDICT);
1096 if (test__start_subtest("sockmap stream_parser progs query"))
1097 test_sockmap_progs_query(BPF_SK_SKB_STREAM_PARSER);
1098 if (test__start_subtest("sockmap stream_verdict progs query"))
1099 test_sockmap_progs_query(BPF_SK_SKB_STREAM_VERDICT);
1100 if (test__start_subtest("sockmap skb_verdict progs query"))
1101 test_sockmap_progs_query(BPF_SK_SKB_VERDICT);
1102 if (test__start_subtest("sockmap skb_verdict shutdown"))
1103 test_sockmap_skb_verdict_shutdown();
1104 if (test__start_subtest("sockmap stream parser and verdict pass"))
1105 test_sockmap_stream_pass();
1106 if (test__start_subtest("sockmap skb_verdict fionread"))
1107 test_sockmap_skb_verdict_fionread(true);
1108 if (test__start_subtest("sockmap skb_verdict fionread on drop"))
1109 test_sockmap_skb_verdict_fionread(false);
1110 if (test__start_subtest("sockmap skb_verdict change tail"))
1111 test_sockmap_skb_verdict_change_tail();
1112 if (test__start_subtest("sockmap skb_verdict msg_f_peek"))
1113 test_sockmap_skb_verdict_peek();
1114 if (test__start_subtest("sockmap skb_verdict msg_f_peek with link"))
1115 test_sockmap_skb_verdict_peek_with_link();
1116 if (test__start_subtest("sockmap unconnected af_unix"))
1117 test_sockmap_unconnected_unix();
1118 if (test__start_subtest("sockmap one socket to many map entries"))
1119 test_sockmap_many_socket();
1120 if (test__start_subtest("sockmap one socket to many maps"))
1121 test_sockmap_many_maps();
1122 if (test__start_subtest("sockmap same socket replace"))
1123 test_sockmap_same_sock();
1124 if (test__start_subtest("sockmap sk_msg attach sockmap helpers with link"))
1125 test_skmsg_helpers_with_link(BPF_MAP_TYPE_SOCKMAP);
1126 if (test__start_subtest("sockhash sk_msg attach sockhash helpers with link"))
1127 test_skmsg_helpers_with_link(BPF_MAP_TYPE_SOCKHASH);
1128 if (test__start_subtest("sockmap skb_verdict vsock poll"))
1129 test_sockmap_skb_verdict_vsock_poll();