1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2020 Intel Corporation. */
5 * Some functions in this program are taken from
6 * Linux kernel samples/bpf/xdpsock* and modified
9 * See test_xsk.sh for detailed information on test topology
10 * and prerequisite network setup.
12 * This test program contains two threads, each thread is single socket with
13 * a unique UMEM. It validates in-order packet delivery and packet content
14 * by sending packets to each other.
18 * These selftests test AF_XDP SKB and Native/DRV modes using veth
19 * Virtual Ethernet interfaces.
21 * For each mode, the following tests are run:
22 * a. nopoll - soft-irq processing in run-to-completion mode
23 * b. poll - using poll() syscall
25 * Create a Tx and a Rx socket, Tx from one socket, Rx on another. Destroy
26 * both sockets, then repeat multiple times. Only nopoll mode is used
27 * d. Bi-directional sockets
28 * Configure sockets as bi-directional tx/rx sockets, sets up fill and
29 * completion rings on each socket, tx/rx in both directions. Only nopoll
32 * Trigger some error conditions and ensure that the appropriate statistics
33 * are incremented. Within this test, the following statistics are tested:
35 * Increase the UMEM frame headroom to a value which results in
36 * insufficient space in the rx buffer for both the packet and the headroom.
38 * Set the 'len' field of tx descriptors to an invalid value (umem frame
41 * Reduce the size of the RX ring to a fraction of the fill ring size.
42 * iv. fill queue empty
43 * Do not populate the fill queue and then try to receive pkts.
44 * f. bpf_link resource persistence
45 * Configure sockets at indexes 0 and 1, run a traffic on queue ids 0,
46 * then remove xsk sockets from queue 0 on both veth interfaces and
47 * finally run a traffic on queues ids 1
49 * h. tests for invalid and corner case Tx descriptors so that the correct ones
50 * are discarded and let through, respectively.
51 * i. 2K frame size tests
52 * j. If multi-buffer is supported, send 9k packets divided into 3 frames
53 * k. If multi-buffer and huge pages are supported, send 9k packets in a single frame
54 * using unaligned mode
55 * l. If multi-buffer is supported, try various nasty combinations of descriptors to
56 * check if they pass the validation or not
60 * - Single process spawns two threads: Tx and Rx
61 * - Each of these two threads attach to a veth interface
62 * - Each thread creates one AF_XDP socket connected to a unique umem for each
64 * - Tx thread Transmits a number of packets from veth<xxxx> to veth<yyyy>
65 * - Rx thread verifies if all packets were received and delivered in-order,
66 * and have the right content
68 * Enable/disable packet dump mode:
69 * --------------------------
70 * To enable L2 - L4 headers and payload dump of each packet on STDOUT, add
71 * parameter -D to params array in test_xsk.sh, i.e. params=("-S" "-D")
79 #include <linux/if_link.h>
80 #include <linux/if_ether.h>
81 #include <linux/mman.h>
82 #include <linux/netdev.h>
83 #include <linux/bitmap.h>
84 #include <linux/ethtool.h>
85 #include <arpa/inet.h>
97 #include <sys/socket.h>
99 #include <sys/types.h>
102 #include "xsk_xdp_progs.skel.h"
104 #include "xskxceiver.h"
106 #include <linux/filter.h>
107 #include "../kselftest.h"
108 #include "xsk_xdp_common.h"
110 #include <network_helpers.h>
112 static bool opt_verbose;
113 static bool opt_print_tests;
114 static enum test_mode opt_mode = TEST_MODE_ALL;
115 static u32 opt_run_test = RUN_ALL_TESTS;
117 void test__fail(void) { /* for network_helpers.c */ }
119 static void __exit_with_error(int error, const char *file, const char *func, int line)
121 ksft_test_result_fail("[%s:%s:%i]: ERROR: %d/\"%s\"\n", file, func, line, error,
126 #define exit_with_error(error) __exit_with_error(error, __FILE__, __func__, __LINE__)
127 #define busy_poll_string(test) (test)->ifobj_tx->busy_poll ? "BUSY-POLL " : ""
128 static char *mode_string(struct test_spec *test)
130 switch (test->mode) {
142 static void report_failure(struct test_spec *test)
147 ksft_test_result_fail("FAIL: %s %s%s\n", mode_string(test), busy_poll_string(test),
152 /* The payload is a word consisting of a packet sequence number in the upper
153 * 16-bits and a intra packet data sequence number in the lower 16 bits. So the 3rd packet's
154 * 5th word of data will contain the number (2<<16) | 4 as they are numbered from 0.
156 static void write_payload(void *dest, u32 pkt_nb, u32 start, u32 size)
158 u32 *ptr = (u32 *)dest, i;
160 start /= sizeof(*ptr);
161 size /= sizeof(*ptr);
162 for (i = 0; i < size; i++)
163 ptr[i] = htonl(pkt_nb << 16 | (i + start));
166 static void gen_eth_hdr(struct xsk_socket_info *xsk, struct ethhdr *eth_hdr)
168 memcpy(eth_hdr->h_dest, xsk->dst_mac, ETH_ALEN);
169 memcpy(eth_hdr->h_source, xsk->src_mac, ETH_ALEN);
170 eth_hdr->h_proto = htons(ETH_P_LOOPBACK);
173 static bool is_umem_valid(struct ifobject *ifobj)
175 return !!ifobj->umem->umem;
178 static u32 mode_to_xdp_flags(enum test_mode mode)
180 return (mode == TEST_MODE_SKB) ? XDP_FLAGS_SKB_MODE : XDP_FLAGS_DRV_MODE;
183 static u64 umem_size(struct xsk_umem_info *umem)
185 return umem->num_frames * umem->frame_size;
188 static int xsk_configure_umem(struct ifobject *ifobj, struct xsk_umem_info *umem, void *buffer,
191 struct xsk_umem_config cfg = {
192 .fill_size = XSK_RING_PROD__DEFAULT_NUM_DESCS,
193 .comp_size = XSK_RING_CONS__DEFAULT_NUM_DESCS,
194 .frame_size = umem->frame_size,
195 .frame_headroom = umem->frame_headroom,
196 .flags = XSK_UMEM__DEFAULT_FLAGS
201 cfg.fill_size = umem->fill_size;
204 cfg.comp_size = umem->comp_size;
206 if (umem->unaligned_mode)
207 cfg.flags |= XDP_UMEM_UNALIGNED_CHUNK_FLAG;
209 ret = xsk_umem__create(&umem->umem, buffer, size,
210 &umem->fq, &umem->cq, &cfg);
214 umem->buffer = buffer;
215 if (ifobj->shared_umem && ifobj->rx_on) {
216 umem->base_addr = umem_size(umem);
217 umem->next_buffer = umem_size(umem);
223 static u64 umem_alloc_buffer(struct xsk_umem_info *umem)
227 addr = umem->next_buffer;
228 umem->next_buffer += umem->frame_size;
229 if (umem->next_buffer >= umem->base_addr + umem_size(umem))
230 umem->next_buffer = umem->base_addr;
235 static void umem_reset_alloc(struct xsk_umem_info *umem)
237 umem->next_buffer = 0;
240 static void enable_busy_poll(struct xsk_socket_info *xsk)
245 if (setsockopt(xsk_socket__fd(xsk->xsk), SOL_SOCKET, SO_PREFER_BUSY_POLL,
246 (void *)&sock_opt, sizeof(sock_opt)) < 0)
247 exit_with_error(errno);
250 if (setsockopt(xsk_socket__fd(xsk->xsk), SOL_SOCKET, SO_BUSY_POLL,
251 (void *)&sock_opt, sizeof(sock_opt)) < 0)
252 exit_with_error(errno);
254 sock_opt = xsk->batch_size;
255 if (setsockopt(xsk_socket__fd(xsk->xsk), SOL_SOCKET, SO_BUSY_POLL_BUDGET,
256 (void *)&sock_opt, sizeof(sock_opt)) < 0)
257 exit_with_error(errno);
260 static int __xsk_configure_socket(struct xsk_socket_info *xsk, struct xsk_umem_info *umem,
261 struct ifobject *ifobject, bool shared)
263 struct xsk_socket_config cfg = {};
264 struct xsk_ring_cons *rxr;
265 struct xsk_ring_prod *txr;
268 cfg.rx_size = xsk->rxqsize;
269 cfg.tx_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
270 cfg.bind_flags = ifobject->bind_flags;
272 cfg.bind_flags |= XDP_SHARED_UMEM;
273 if (ifobject->mtu > MAX_ETH_PKT_SIZE)
274 cfg.bind_flags |= XDP_USE_SG;
276 cfg.tx_size = umem->comp_size;
278 cfg.rx_size = umem->fill_size;
280 txr = ifobject->tx_on ? &xsk->tx : NULL;
281 rxr = ifobject->rx_on ? &xsk->rx : NULL;
282 return xsk_socket__create(&xsk->xsk, ifobject->ifindex, 0, umem->umem, rxr, txr, &cfg);
285 static bool ifobj_zc_avail(struct ifobject *ifobject)
287 size_t umem_sz = DEFAULT_UMEM_BUFFERS * XSK_UMEM__DEFAULT_FRAME_SIZE;
288 int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
289 struct xsk_socket_info *xsk;
290 struct xsk_umem_info *umem;
291 bool zc_avail = false;
295 bufs = mmap(NULL, umem_sz, PROT_READ | PROT_WRITE, mmap_flags, -1, 0);
296 if (bufs == MAP_FAILED)
297 exit_with_error(errno);
299 umem = calloc(1, sizeof(struct xsk_umem_info));
301 munmap(bufs, umem_sz);
302 exit_with_error(ENOMEM);
304 umem->frame_size = XSK_UMEM__DEFAULT_FRAME_SIZE;
305 ret = xsk_configure_umem(ifobject, umem, bufs, umem_sz);
307 exit_with_error(-ret);
309 xsk = calloc(1, sizeof(struct xsk_socket_info));
312 ifobject->bind_flags = XDP_USE_NEED_WAKEUP | XDP_ZEROCOPY;
313 ifobject->rx_on = true;
314 xsk->rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
315 ret = __xsk_configure_socket(xsk, umem, ifobject, false);
319 xsk_socket__delete(xsk->xsk);
322 munmap(umem->buffer, umem_sz);
323 xsk_umem__delete(umem->umem);
328 #define MAX_SKB_FRAGS_PATH "/proc/sys/net/core/max_skb_frags"
329 static unsigned int get_max_skb_frags(void)
331 unsigned int max_skb_frags = 0;
334 file = fopen(MAX_SKB_FRAGS_PATH, "r");
336 ksft_print_msg("Error opening %s\n", MAX_SKB_FRAGS_PATH);
340 if (fscanf(file, "%u", &max_skb_frags) != 1)
341 ksft_print_msg("Error reading %s\n", MAX_SKB_FRAGS_PATH);
344 return max_skb_frags;
347 static struct option long_options[] = {
348 {"interface", required_argument, 0, 'i'},
349 {"busy-poll", no_argument, 0, 'b'},
350 {"verbose", no_argument, 0, 'v'},
351 {"mode", required_argument, 0, 'm'},
352 {"list", no_argument, 0, 'l'},
353 {"test", required_argument, 0, 't'},
354 {"help", no_argument, 0, 'h'},
358 static void print_usage(char **argv)
361 " Usage: xskxceiver [OPTIONS]\n"
363 " -i, --interface Use interface\n"
364 " -v, --verbose Verbose output\n"
365 " -b, --busy-poll Enable busy poll\n"
366 " -m, --mode Run only mode skb, drv, or zc\n"
367 " -l, --list List all available tests\n"
368 " -t, --test Run a specific test. Enter number from -l option.\n"
369 " -h, --help Display this help and exit\n";
371 ksft_print_msg(str, basename(argv[0]));
375 static bool validate_interface(struct ifobject *ifobj)
377 if (!strcmp(ifobj->ifname, ""))
382 static void parse_command_line(struct ifobject *ifobj_tx, struct ifobject *ifobj_rx, int argc,
385 struct ifobject *ifobj;
386 u32 interface_nb = 0;
392 c = getopt_long(argc, argv, "i:vbm:lt:", long_options, &option_index);
398 if (interface_nb == 0)
400 else if (interface_nb == 1)
405 memcpy(ifobj->ifname, optarg,
406 min_t(size_t, MAX_INTERFACE_NAME_CHARS, strlen(optarg)));
408 ifobj->ifindex = if_nametoindex(ifobj->ifname);
410 exit_with_error(errno);
418 ifobj_tx->busy_poll = true;
419 ifobj_rx->busy_poll = true;
422 if (!strncmp("skb", optarg, strlen(optarg)))
423 opt_mode = TEST_MODE_SKB;
424 else if (!strncmp("drv", optarg, strlen(optarg)))
425 opt_mode = TEST_MODE_DRV;
426 else if (!strncmp("zc", optarg, strlen(optarg)))
427 opt_mode = TEST_MODE_ZC;
432 opt_print_tests = true;
436 opt_run_test = strtol(optarg, NULL, 0);
447 static int set_ring_size(struct ifobject *ifobj)
452 while (ctr++ < SOCK_RECONF_CTR) {
453 ret = set_hw_ring_size(ifobj->ifname, &ifobj->ring);
457 /* Retry if it fails */
458 if (ctr >= SOCK_RECONF_CTR || errno != EBUSY)
467 static int hw_ring_size_reset(struct ifobject *ifobj)
469 ifobj->ring.tx_pending = ifobj->set_ring.default_tx;
470 ifobj->ring.rx_pending = ifobj->set_ring.default_rx;
471 return set_ring_size(ifobj);
474 static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
475 struct ifobject *ifobj_rx)
479 for (i = 0; i < MAX_INTERFACES; i++) {
480 struct ifobject *ifobj = i ? ifobj_rx : ifobj_tx;
482 ifobj->xsk = &ifobj->xsk_arr[0];
483 ifobj->use_poll = false;
484 ifobj->use_fill_ring = true;
485 ifobj->release_rx = true;
486 ifobj->validation_func = NULL;
487 ifobj->use_metadata = false;
490 ifobj->rx_on = false;
494 ifobj->tx_on = false;
497 memset(ifobj->umem, 0, sizeof(*ifobj->umem));
498 ifobj->umem->num_frames = DEFAULT_UMEM_BUFFERS;
499 ifobj->umem->frame_size = XSK_UMEM__DEFAULT_FRAME_SIZE;
501 for (j = 0; j < MAX_SOCKETS; j++) {
502 memset(&ifobj->xsk_arr[j], 0, sizeof(ifobj->xsk_arr[j]));
503 ifobj->xsk_arr[j].rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
504 ifobj->xsk_arr[j].batch_size = DEFAULT_BATCH_SIZE;
506 ifobj->xsk_arr[j].pkt_stream = test->tx_pkt_stream_default;
508 ifobj->xsk_arr[j].pkt_stream = test->rx_pkt_stream_default;
510 memcpy(ifobj->xsk_arr[j].src_mac, g_mac, ETH_ALEN);
511 memcpy(ifobj->xsk_arr[j].dst_mac, g_mac, ETH_ALEN);
512 ifobj->xsk_arr[j].src_mac[5] += ((j * 2) + 0);
513 ifobj->xsk_arr[j].dst_mac[5] += ((j * 2) + 1);
517 if (ifobj_tx->hw_ring_size_supp)
518 hw_ring_size_reset(ifobj_tx);
520 test->ifobj_tx = ifobj_tx;
521 test->ifobj_rx = ifobj_rx;
522 test->current_step = 0;
523 test->total_steps = 1;
524 test->nb_sockets = 1;
526 test->set_ring = false;
527 test->mtu = MAX_ETH_PKT_SIZE;
528 test->xdp_prog_rx = ifobj_rx->xdp_progs->progs.xsk_def_prog;
529 test->xskmap_rx = ifobj_rx->xdp_progs->maps.xsk;
530 test->xdp_prog_tx = ifobj_tx->xdp_progs->progs.xsk_def_prog;
531 test->xskmap_tx = ifobj_tx->xdp_progs->maps.xsk;
534 static void test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
535 struct ifobject *ifobj_rx, enum test_mode mode,
536 const struct test_spec *test_to_run)
538 struct pkt_stream *tx_pkt_stream;
539 struct pkt_stream *rx_pkt_stream;
542 tx_pkt_stream = test->tx_pkt_stream_default;
543 rx_pkt_stream = test->rx_pkt_stream_default;
544 memset(test, 0, sizeof(*test));
545 test->tx_pkt_stream_default = tx_pkt_stream;
546 test->rx_pkt_stream_default = rx_pkt_stream;
548 for (i = 0; i < MAX_INTERFACES; i++) {
549 struct ifobject *ifobj = i ? ifobj_rx : ifobj_tx;
551 ifobj->bind_flags = XDP_USE_NEED_WAKEUP;
552 if (mode == TEST_MODE_ZC)
553 ifobj->bind_flags |= XDP_ZEROCOPY;
555 ifobj->bind_flags |= XDP_COPY;
558 strncpy(test->name, test_to_run->name, MAX_TEST_NAME_SIZE);
559 test->test_func = test_to_run->test_func;
561 __test_spec_init(test, ifobj_tx, ifobj_rx);
564 static void test_spec_reset(struct test_spec *test)
566 __test_spec_init(test, test->ifobj_tx, test->ifobj_rx);
569 static void test_spec_set_xdp_prog(struct test_spec *test, struct bpf_program *xdp_prog_rx,
570 struct bpf_program *xdp_prog_tx, struct bpf_map *xskmap_rx,
571 struct bpf_map *xskmap_tx)
573 test->xdp_prog_rx = xdp_prog_rx;
574 test->xdp_prog_tx = xdp_prog_tx;
575 test->xskmap_rx = xskmap_rx;
576 test->xskmap_tx = xskmap_tx;
579 static int test_spec_set_mtu(struct test_spec *test, int mtu)
583 if (test->ifobj_rx->mtu != mtu) {
584 err = xsk_set_mtu(test->ifobj_rx->ifindex, mtu);
587 test->ifobj_rx->mtu = mtu;
589 if (test->ifobj_tx->mtu != mtu) {
590 err = xsk_set_mtu(test->ifobj_tx->ifindex, mtu);
593 test->ifobj_tx->mtu = mtu;
599 static void pkt_stream_reset(struct pkt_stream *pkt_stream)
602 pkt_stream->current_pkt_nb = 0;
603 pkt_stream->nb_rx_pkts = 0;
607 static struct pkt *pkt_stream_get_next_tx_pkt(struct pkt_stream *pkt_stream)
609 if (pkt_stream->current_pkt_nb >= pkt_stream->nb_pkts)
612 return &pkt_stream->pkts[pkt_stream->current_pkt_nb++];
615 static struct pkt *pkt_stream_get_next_rx_pkt(struct pkt_stream *pkt_stream, u32 *pkts_sent)
617 while (pkt_stream->current_pkt_nb < pkt_stream->nb_pkts) {
619 if (pkt_stream->pkts[pkt_stream->current_pkt_nb].valid)
620 return &pkt_stream->pkts[pkt_stream->current_pkt_nb++];
621 pkt_stream->current_pkt_nb++;
626 static void pkt_stream_delete(struct pkt_stream *pkt_stream)
628 free(pkt_stream->pkts);
632 static void pkt_stream_restore_default(struct test_spec *test)
634 struct pkt_stream *tx_pkt_stream = test->ifobj_tx->xsk->pkt_stream;
635 struct pkt_stream *rx_pkt_stream = test->ifobj_rx->xsk->pkt_stream;
637 if (tx_pkt_stream != test->tx_pkt_stream_default) {
638 pkt_stream_delete(test->ifobj_tx->xsk->pkt_stream);
639 test->ifobj_tx->xsk->pkt_stream = test->tx_pkt_stream_default;
642 if (rx_pkt_stream != test->rx_pkt_stream_default) {
643 pkt_stream_delete(test->ifobj_rx->xsk->pkt_stream);
644 test->ifobj_rx->xsk->pkt_stream = test->rx_pkt_stream_default;
648 static struct pkt_stream *__pkt_stream_alloc(u32 nb_pkts)
650 struct pkt_stream *pkt_stream;
652 pkt_stream = calloc(1, sizeof(*pkt_stream));
656 pkt_stream->pkts = calloc(nb_pkts, sizeof(*pkt_stream->pkts));
657 if (!pkt_stream->pkts) {
662 pkt_stream->nb_pkts = nb_pkts;
666 static bool pkt_continues(u32 options)
668 return options & XDP_PKT_CONTD;
671 static u32 ceil_u32(u32 a, u32 b)
673 return (a + b - 1) / b;
676 static u32 pkt_nb_frags(u32 frame_size, struct pkt_stream *pkt_stream, struct pkt *pkt)
678 u32 nb_frags = 1, next_frag;
683 if (!pkt_stream->verbatim) {
684 if (!pkt->valid || !pkt->len)
686 return ceil_u32(pkt->len, frame_size);
689 /* Search for the end of the packet in verbatim mode */
690 if (!pkt_continues(pkt->options))
693 next_frag = pkt_stream->current_pkt_nb;
695 while (next_frag++ < pkt_stream->nb_pkts) {
697 if (!pkt_continues(pkt->options) || !pkt->valid)
704 static bool set_pkt_valid(int offset, u32 len)
706 return len <= MAX_ETH_JUMBO_SIZE;
709 static void pkt_set(struct pkt_stream *pkt_stream, struct pkt *pkt, int offset, u32 len)
711 pkt->offset = offset;
713 pkt->valid = set_pkt_valid(offset, len);
716 static void pkt_stream_pkt_set(struct pkt_stream *pkt_stream, struct pkt *pkt, int offset, u32 len)
718 bool prev_pkt_valid = pkt->valid;
720 pkt_set(pkt_stream, pkt, offset, len);
721 pkt_stream->nb_valid_entries += pkt->valid - prev_pkt_valid;
724 static u32 pkt_get_buffer_len(struct xsk_umem_info *umem, u32 len)
726 return ceil_u32(len, umem->frame_size) * umem->frame_size;
729 static struct pkt_stream *__pkt_stream_generate(u32 nb_pkts, u32 pkt_len, u32 nb_start, u32 nb_off)
731 struct pkt_stream *pkt_stream;
734 pkt_stream = __pkt_stream_alloc(nb_pkts);
736 exit_with_error(ENOMEM);
738 pkt_stream->nb_pkts = nb_pkts;
739 pkt_stream->max_pkt_len = pkt_len;
740 for (i = 0; i < nb_pkts; i++) {
741 struct pkt *pkt = &pkt_stream->pkts[i];
743 pkt_stream_pkt_set(pkt_stream, pkt, 0, pkt_len);
744 pkt->pkt_nb = nb_start + i * nb_off;
750 static struct pkt_stream *pkt_stream_generate(u32 nb_pkts, u32 pkt_len)
752 return __pkt_stream_generate(nb_pkts, pkt_len, 0, 1);
755 static struct pkt_stream *pkt_stream_clone(struct pkt_stream *pkt_stream)
757 return pkt_stream_generate(pkt_stream->nb_pkts, pkt_stream->pkts[0].len);
760 static void pkt_stream_replace(struct test_spec *test, u32 nb_pkts, u32 pkt_len)
762 struct pkt_stream *pkt_stream;
764 pkt_stream = pkt_stream_generate(nb_pkts, pkt_len);
765 test->ifobj_tx->xsk->pkt_stream = pkt_stream;
766 pkt_stream = pkt_stream_generate(nb_pkts, pkt_len);
767 test->ifobj_rx->xsk->pkt_stream = pkt_stream;
770 static void __pkt_stream_replace_half(struct ifobject *ifobj, u32 pkt_len,
773 struct pkt_stream *pkt_stream;
776 pkt_stream = pkt_stream_clone(ifobj->xsk->pkt_stream);
777 for (i = 1; i < ifobj->xsk->pkt_stream->nb_pkts; i += 2)
778 pkt_stream_pkt_set(pkt_stream, &pkt_stream->pkts[i], offset, pkt_len);
780 ifobj->xsk->pkt_stream = pkt_stream;
783 static void pkt_stream_replace_half(struct test_spec *test, u32 pkt_len, int offset)
785 __pkt_stream_replace_half(test->ifobj_tx, pkt_len, offset);
786 __pkt_stream_replace_half(test->ifobj_rx, pkt_len, offset);
789 static void pkt_stream_receive_half(struct test_spec *test)
791 struct pkt_stream *pkt_stream = test->ifobj_tx->xsk->pkt_stream;
794 test->ifobj_rx->xsk->pkt_stream = pkt_stream_generate(pkt_stream->nb_pkts,
795 pkt_stream->pkts[0].len);
796 pkt_stream = test->ifobj_rx->xsk->pkt_stream;
797 for (i = 1; i < pkt_stream->nb_pkts; i += 2)
798 pkt_stream->pkts[i].valid = false;
800 pkt_stream->nb_valid_entries /= 2;
803 static void pkt_stream_even_odd_sequence(struct test_spec *test)
805 struct pkt_stream *pkt_stream;
808 for (i = 0; i < test->nb_sockets; i++) {
809 pkt_stream = test->ifobj_tx->xsk_arr[i].pkt_stream;
810 pkt_stream = __pkt_stream_generate(pkt_stream->nb_pkts / 2,
811 pkt_stream->pkts[0].len, i, 2);
812 test->ifobj_tx->xsk_arr[i].pkt_stream = pkt_stream;
814 pkt_stream = test->ifobj_rx->xsk_arr[i].pkt_stream;
815 pkt_stream = __pkt_stream_generate(pkt_stream->nb_pkts / 2,
816 pkt_stream->pkts[0].len, i, 2);
817 test->ifobj_rx->xsk_arr[i].pkt_stream = pkt_stream;
821 static u64 pkt_get_addr(struct pkt *pkt, struct xsk_umem_info *umem)
825 return pkt->offset + umem_alloc_buffer(umem);
828 static void pkt_stream_cancel(struct pkt_stream *pkt_stream)
830 pkt_stream->current_pkt_nb--;
833 static void pkt_generate(struct xsk_socket_info *xsk, struct xsk_umem_info *umem, u64 addr, u32 len,
834 u32 pkt_nb, u32 bytes_written)
836 void *data = xsk_umem__get_data(umem->buffer, addr);
838 if (len < MIN_PKT_SIZE)
841 if (!bytes_written) {
842 gen_eth_hdr(xsk, data);
845 data += PKT_HDR_SIZE;
847 bytes_written -= PKT_HDR_SIZE;
850 write_payload(data, pkt_nb, bytes_written, len);
853 static struct pkt_stream *__pkt_stream_generate_custom(struct ifobject *ifobj, struct pkt *frames,
854 u32 nb_frames, bool verbatim)
856 u32 i, len = 0, pkt_nb = 0, payload = 0;
857 struct pkt_stream *pkt_stream;
859 pkt_stream = __pkt_stream_alloc(nb_frames);
861 exit_with_error(ENOMEM);
863 for (i = 0; i < nb_frames; i++) {
864 struct pkt *pkt = &pkt_stream->pkts[pkt_nb];
865 struct pkt *frame = &frames[i];
867 pkt->offset = frame->offset;
870 pkt->pkt_nb = payload;
871 if (!frame->valid || !pkt_continues(frame->options))
876 if (frame->valid && pkt_continues(frame->options))
879 pkt->pkt_nb = pkt_nb;
881 pkt->valid = frame->valid;
887 print_verbose("offset: %d len: %u valid: %u options: %u pkt_nb: %u\n",
888 pkt->offset, pkt->len, pkt->valid, pkt->options, pkt->pkt_nb);
890 if (pkt->valid && pkt->len > pkt_stream->max_pkt_len)
891 pkt_stream->max_pkt_len = pkt->len;
894 pkt_stream->nb_valid_entries++;
899 pkt_stream->nb_pkts = pkt_nb;
900 pkt_stream->verbatim = verbatim;
904 static void pkt_stream_generate_custom(struct test_spec *test, struct pkt *pkts, u32 nb_pkts)
906 struct pkt_stream *pkt_stream;
908 pkt_stream = __pkt_stream_generate_custom(test->ifobj_tx, pkts, nb_pkts, true);
909 test->ifobj_tx->xsk->pkt_stream = pkt_stream;
911 pkt_stream = __pkt_stream_generate_custom(test->ifobj_rx, pkts, nb_pkts, false);
912 test->ifobj_rx->xsk->pkt_stream = pkt_stream;
915 static void pkt_print_data(u32 *data, u32 cnt)
919 for (i = 0; i < cnt; i++) {
922 seqnum = ntohl(*data) & 0xffff;
923 pkt_nb = ntohl(*data) >> 16;
924 ksft_print_msg("%u:%u ", pkt_nb, seqnum);
929 static void pkt_dump(void *pkt, u32 len, bool eth_header)
931 struct ethhdr *ethhdr = pkt;
935 /*extract L2 frame */
936 ksft_print_msg("DEBUG>> L2: dst mac: ");
937 for (i = 0; i < ETH_ALEN; i++)
938 ksft_print_msg("%02X", ethhdr->h_dest[i]);
940 ksft_print_msg("\nDEBUG>> L2: src mac: ");
941 for (i = 0; i < ETH_ALEN; i++)
942 ksft_print_msg("%02X", ethhdr->h_source[i]);
944 data = pkt + PKT_HDR_SIZE;
949 /*extract L5 frame */
950 ksft_print_msg("\nDEBUG>> L5: seqnum: ");
951 pkt_print_data(data, PKT_DUMP_NB_TO_PRINT);
952 ksft_print_msg("....");
953 if (len > PKT_DUMP_NB_TO_PRINT * sizeof(u32)) {
954 ksft_print_msg("\n.... ");
955 pkt_print_data(data + len / sizeof(u32) - PKT_DUMP_NB_TO_PRINT,
956 PKT_DUMP_NB_TO_PRINT);
958 ksft_print_msg("\n---------------------------------------\n");
961 static bool is_offset_correct(struct xsk_umem_info *umem, struct pkt *pkt, u64 addr)
963 u32 headroom = umem->unaligned_mode ? 0 : umem->frame_headroom;
964 u32 offset = addr % umem->frame_size, expected_offset;
965 int pkt_offset = pkt->valid ? pkt->offset : 0;
967 if (!umem->unaligned_mode)
970 expected_offset = (pkt_offset + headroom + XDP_PACKET_HEADROOM) % umem->frame_size;
972 if (offset == expected_offset)
975 ksft_print_msg("[%s] expected [%u], got [%u]\n", __func__, expected_offset, offset);
979 static bool is_metadata_correct(struct pkt *pkt, void *buffer, u64 addr)
981 void *data = xsk_umem__get_data(buffer, addr);
982 struct xdp_info *meta = data - sizeof(struct xdp_info);
984 if (meta->count != pkt->pkt_nb) {
985 ksft_print_msg("[%s] expected meta_count [%d], got meta_count [%llu]\n",
986 __func__, pkt->pkt_nb,
987 (unsigned long long)meta->count);
994 static bool is_frag_valid(struct xsk_umem_info *umem, u64 addr, u32 len, u32 expected_pkt_nb,
997 u32 seqnum, pkt_nb, *pkt_data, words_to_end, expected_seqnum;
998 void *data = xsk_umem__get_data(umem->buffer, addr);
1000 addr -= umem->base_addr;
1002 if (addr >= umem->num_frames * umem->frame_size ||
1003 addr + len > umem->num_frames * umem->frame_size) {
1004 ksft_print_msg("Frag invalid addr: %llx len: %u\n",
1005 (unsigned long long)addr, len);
1008 if (!umem->unaligned_mode && addr % umem->frame_size + len > umem->frame_size) {
1009 ksft_print_msg("Frag crosses frame boundary addr: %llx len: %u\n",
1010 (unsigned long long)addr, len);
1015 if (!bytes_processed) {
1016 pkt_data += PKT_HDR_SIZE / sizeof(*pkt_data);
1017 len -= PKT_HDR_SIZE;
1019 bytes_processed -= PKT_HDR_SIZE;
1022 expected_seqnum = bytes_processed / sizeof(*pkt_data);
1023 seqnum = ntohl(*pkt_data) & 0xffff;
1024 pkt_nb = ntohl(*pkt_data) >> 16;
1026 if (expected_pkt_nb != pkt_nb) {
1027 ksft_print_msg("[%s] expected pkt_nb [%u], got pkt_nb [%u]\n",
1028 __func__, expected_pkt_nb, pkt_nb);
1031 if (expected_seqnum != seqnum) {
1032 ksft_print_msg("[%s] expected seqnum at start [%u], got seqnum [%u]\n",
1033 __func__, expected_seqnum, seqnum);
1037 words_to_end = len / sizeof(*pkt_data) - 1;
1038 pkt_data += words_to_end;
1039 seqnum = ntohl(*pkt_data) & 0xffff;
1040 expected_seqnum += words_to_end;
1041 if (expected_seqnum != seqnum) {
1042 ksft_print_msg("[%s] expected seqnum at end [%u], got seqnum [%u]\n",
1043 __func__, expected_seqnum, seqnum);
1050 pkt_dump(data, len, !bytes_processed);
1054 static bool is_pkt_valid(struct pkt *pkt, void *buffer, u64 addr, u32 len)
1056 if (pkt->len != len) {
1057 ksft_print_msg("[%s] expected packet length [%d], got length [%d]\n",
1058 __func__, pkt->len, len);
1059 pkt_dump(xsk_umem__get_data(buffer, addr), len, true);
1066 static int kick_tx(struct xsk_socket_info *xsk)
1070 ret = sendto(xsk_socket__fd(xsk->xsk), NULL, 0, MSG_DONTWAIT, NULL, 0);
1073 if (errno == ENOBUFS || errno == EAGAIN || errno == EBUSY || errno == ENETDOWN) {
1077 return TEST_FAILURE;
1080 static int kick_rx(struct xsk_socket_info *xsk)
1084 ret = recvfrom(xsk_socket__fd(xsk->xsk), NULL, 0, MSG_DONTWAIT, NULL, NULL);
1086 return TEST_FAILURE;
1091 static int complete_pkts(struct xsk_socket_info *xsk, int batch_size)
1097 if (xsk_ring_prod__needs_wakeup(&xsk->tx)) {
1100 return TEST_FAILURE;
1103 rcvd = xsk_ring_cons__peek(&xsk->umem->cq, batch_size, &idx);
1105 if (rcvd > xsk->outstanding_tx) {
1106 u64 addr = *xsk_ring_cons__comp_addr(&xsk->umem->cq, idx + rcvd - 1);
1108 ksft_print_msg("[%s] Too many packets completed\n", __func__);
1109 ksft_print_msg("Last completion address: %llx\n",
1110 (unsigned long long)addr);
1111 return TEST_FAILURE;
1114 xsk_ring_cons__release(&xsk->umem->cq, rcvd);
1115 xsk->outstanding_tx -= rcvd;
1121 static int __receive_pkts(struct test_spec *test, struct xsk_socket_info *xsk)
1123 u32 frags_processed = 0, nb_frags = 0, pkt_len = 0;
1124 u32 idx_rx = 0, idx_fq = 0, rcvd, pkts_sent = 0;
1125 struct pkt_stream *pkt_stream = xsk->pkt_stream;
1126 struct ifobject *ifobj = test->ifobj_rx;
1127 struct xsk_umem_info *umem = xsk->umem;
1128 struct pollfd fds = { };
1133 fds.fd = xsk_socket__fd(xsk->xsk);
1134 fds.events = POLLIN;
1138 return TEST_FAILURE;
1140 if (ifobj->use_poll) {
1141 ret = poll(&fds, 1, POLL_TMOUT);
1143 return TEST_FAILURE;
1146 if (!is_umem_valid(test->ifobj_tx))
1149 ksft_print_msg("ERROR: [%s] Poll timed out\n", __func__);
1150 return TEST_CONTINUE;
1153 if (!(fds.revents & POLLIN))
1154 return TEST_CONTINUE;
1157 rcvd = xsk_ring_cons__peek(&xsk->rx, xsk->batch_size, &idx_rx);
1159 return TEST_CONTINUE;
1161 if (ifobj->use_fill_ring) {
1162 ret = xsk_ring_prod__reserve(&umem->fq, rcvd, &idx_fq);
1163 while (ret != rcvd) {
1164 if (xsk_ring_prod__needs_wakeup(&umem->fq)) {
1165 ret = poll(&fds, 1, POLL_TMOUT);
1167 return TEST_FAILURE;
1169 ret = xsk_ring_prod__reserve(&umem->fq, rcvd, &idx_fq);
1173 while (frags_processed < rcvd) {
1174 const struct xdp_desc *desc = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx++);
1175 u64 addr = desc->addr, orig;
1177 orig = xsk_umem__extract_addr(addr);
1178 addr = xsk_umem__add_offset_to_addr(addr);
1181 pkt = pkt_stream_get_next_rx_pkt(pkt_stream, &pkts_sent);
1183 ksft_print_msg("[%s] received too many packets addr: %lx len %u\n",
1184 __func__, addr, desc->len);
1185 return TEST_FAILURE;
1189 print_verbose("Rx: addr: %lx len: %u options: %u pkt_nb: %u valid: %u\n",
1190 addr, desc->len, desc->options, pkt->pkt_nb, pkt->valid);
1192 if (!is_frag_valid(umem, addr, desc->len, pkt->pkt_nb, pkt_len) ||
1193 !is_offset_correct(umem, pkt, addr) || (ifobj->use_metadata &&
1194 !is_metadata_correct(pkt, umem->buffer, addr)))
1195 return TEST_FAILURE;
1200 pkt_len += desc->len;
1201 if (ifobj->use_fill_ring)
1202 *xsk_ring_prod__fill_addr(&umem->fq, idx_fq++) = orig;
1204 if (pkt_continues(desc->options))
1207 /* The complete packet has been received */
1208 if (!is_pkt_valid(pkt, umem->buffer, first_addr, pkt_len) ||
1209 !is_offset_correct(umem, pkt, addr))
1210 return TEST_FAILURE;
1212 pkt_stream->nb_rx_pkts++;
1218 /* In the middle of a packet. Start over from beginning of packet. */
1220 xsk_ring_cons__cancel(&xsk->rx, nb_frags);
1221 if (ifobj->use_fill_ring) {
1223 xsk_ring_prod__cancel(&umem->fq, nb_frags);
1225 frags_processed -= nb_frags;
1228 if (ifobj->use_fill_ring)
1229 xsk_ring_prod__submit(&umem->fq, frags_processed);
1230 if (ifobj->release_rx)
1231 xsk_ring_cons__release(&xsk->rx, frags_processed);
1233 pthread_mutex_lock(&pacing_mutex);
1234 pkts_in_flight -= pkts_sent;
1235 pthread_mutex_unlock(&pacing_mutex);
1238 return TEST_CONTINUE;
1241 bool all_packets_received(struct test_spec *test, struct xsk_socket_info *xsk, u32 sock_num,
1242 unsigned long *bitmap)
1244 struct pkt_stream *pkt_stream = xsk->pkt_stream;
1247 __set_bit(sock_num, bitmap);
1251 if (pkt_stream->nb_rx_pkts == pkt_stream->nb_valid_entries) {
1252 __set_bit(sock_num, bitmap);
1253 if (bitmap_full(bitmap, test->nb_sockets))
1260 static int receive_pkts(struct test_spec *test)
1262 struct timeval tv_end, tv_now, tv_timeout = {THREAD_TMOUT, 0};
1263 DECLARE_BITMAP(bitmap, test->nb_sockets);
1264 struct xsk_socket_info *xsk;
1268 ret = gettimeofday(&tv_now, NULL);
1270 exit_with_error(errno);
1272 timeradd(&tv_now, &tv_timeout, &tv_end);
1275 xsk = &test->ifobj_rx->xsk_arr[sock_num];
1277 if ((all_packets_received(test, xsk, sock_num, bitmap)))
1280 res = __receive_pkts(test, xsk);
1281 if (!(res == TEST_PASS || res == TEST_CONTINUE))
1284 ret = gettimeofday(&tv_now, NULL);
1286 exit_with_error(errno);
1288 if (timercmp(&tv_now, &tv_end, >)) {
1289 ksft_print_msg("ERROR: [%s] Receive loop timed out\n", __func__);
1290 return TEST_FAILURE;
1292 sock_num = (sock_num + 1) % test->nb_sockets;
1298 static int __send_pkts(struct ifobject *ifobject, struct xsk_socket_info *xsk, bool timeout)
1300 u32 i, idx = 0, valid_pkts = 0, valid_frags = 0, buffer_len;
1301 struct pkt_stream *pkt_stream = xsk->pkt_stream;
1302 struct xsk_umem_info *umem = ifobject->umem;
1303 bool use_poll = ifobject->use_poll;
1304 struct pollfd fds = { };
1307 buffer_len = pkt_get_buffer_len(umem, pkt_stream->max_pkt_len);
1308 /* pkts_in_flight might be negative if many invalid packets are sent */
1309 if (pkts_in_flight >= (int)((umem_size(umem) - xsk->batch_size * buffer_len) /
1313 return TEST_FAILURE;
1314 return TEST_CONTINUE;
1317 fds.fd = xsk_socket__fd(xsk->xsk);
1318 fds.events = POLLOUT;
1320 while (xsk_ring_prod__reserve(&xsk->tx, xsk->batch_size, &idx) < xsk->batch_size) {
1322 ret = poll(&fds, 1, POLL_TMOUT);
1325 ksft_print_msg("ERROR: [%s] Poll error %d\n",
1327 return TEST_FAILURE;
1334 ksft_print_msg("ERROR: [%s] Poll error %d\n",
1336 return TEST_FAILURE;
1340 complete_pkts(xsk, xsk->batch_size);
1343 for (i = 0; i < xsk->batch_size; i++) {
1344 struct pkt *pkt = pkt_stream_get_next_tx_pkt(pkt_stream);
1345 u32 nb_frags_left, nb_frags, bytes_written = 0;
1350 nb_frags = pkt_nb_frags(umem->frame_size, pkt_stream, pkt);
1351 if (nb_frags > xsk->batch_size - i) {
1352 pkt_stream_cancel(pkt_stream);
1353 xsk_ring_prod__cancel(&xsk->tx, xsk->batch_size - i);
1356 nb_frags_left = nb_frags;
1358 while (nb_frags_left--) {
1359 struct xdp_desc *tx_desc = xsk_ring_prod__tx_desc(&xsk->tx, idx + i);
1361 tx_desc->addr = pkt_get_addr(pkt, ifobject->umem);
1362 if (pkt_stream->verbatim) {
1363 tx_desc->len = pkt->len;
1364 tx_desc->options = pkt->options;
1365 } else if (nb_frags_left) {
1366 tx_desc->len = umem->frame_size;
1367 tx_desc->options = XDP_PKT_CONTD;
1369 tx_desc->len = pkt->len - bytes_written;
1370 tx_desc->options = 0;
1373 pkt_generate(xsk, umem, tx_desc->addr, tx_desc->len, pkt->pkt_nb,
1375 bytes_written += tx_desc->len;
1377 print_verbose("Tx addr: %llx len: %u options: %u pkt_nb: %u\n",
1378 tx_desc->addr, tx_desc->len, tx_desc->options, pkt->pkt_nb);
1380 if (nb_frags_left) {
1382 if (pkt_stream->verbatim)
1383 pkt = pkt_stream_get_next_tx_pkt(pkt_stream);
1387 if (pkt && pkt->valid) {
1389 valid_frags += nb_frags;
1393 pthread_mutex_lock(&pacing_mutex);
1394 pkts_in_flight += valid_pkts;
1395 pthread_mutex_unlock(&pacing_mutex);
1397 xsk_ring_prod__submit(&xsk->tx, i);
1398 xsk->outstanding_tx += valid_frags;
1401 ret = poll(&fds, 1, POLL_TMOUT);
1403 if (ret == 0 && timeout)
1406 ksft_print_msg("ERROR: [%s] Poll error %d\n", __func__, ret);
1407 return TEST_FAILURE;
1412 if (complete_pkts(xsk, i))
1413 return TEST_FAILURE;
1419 return TEST_CONTINUE;
1422 static int wait_for_tx_completion(struct xsk_socket_info *xsk)
1424 struct timeval tv_end, tv_now, tv_timeout = {THREAD_TMOUT, 0};
1427 ret = gettimeofday(&tv_now, NULL);
1429 exit_with_error(errno);
1430 timeradd(&tv_now, &tv_timeout, &tv_end);
1432 while (xsk->outstanding_tx) {
1433 ret = gettimeofday(&tv_now, NULL);
1435 exit_with_error(errno);
1436 if (timercmp(&tv_now, &tv_end, >)) {
1437 ksft_print_msg("ERROR: [%s] Transmission loop timed out\n", __func__);
1438 return TEST_FAILURE;
1441 complete_pkts(xsk, xsk->batch_size);
1447 bool all_packets_sent(struct test_spec *test, unsigned long *bitmap)
1449 return bitmap_full(bitmap, test->nb_sockets);
1452 static int send_pkts(struct test_spec *test, struct ifobject *ifobject)
1454 bool timeout = !is_umem_valid(test->ifobj_rx);
1455 DECLARE_BITMAP(bitmap, test->nb_sockets);
1458 while (!(all_packets_sent(test, bitmap))) {
1459 for (i = 0; i < test->nb_sockets; i++) {
1460 struct pkt_stream *pkt_stream;
1462 pkt_stream = ifobject->xsk_arr[i].pkt_stream;
1463 if (!pkt_stream || pkt_stream->current_pkt_nb >= pkt_stream->nb_pkts) {
1464 __set_bit(i, bitmap);
1467 ret = __send_pkts(ifobject, &ifobject->xsk_arr[i], timeout);
1468 if (ret == TEST_CONTINUE && !test->fail)
1471 if ((ret || test->fail) && !timeout)
1472 return TEST_FAILURE;
1474 if (ret == TEST_PASS && timeout)
1477 ret = wait_for_tx_completion(&ifobject->xsk_arr[i]);
1479 return TEST_FAILURE;
1486 static int get_xsk_stats(struct xsk_socket *xsk, struct xdp_statistics *stats)
1488 int fd = xsk_socket__fd(xsk), err;
1489 socklen_t optlen, expected_len;
1491 optlen = sizeof(*stats);
1492 err = getsockopt(fd, SOL_XDP, XDP_STATISTICS, stats, &optlen);
1494 ksft_print_msg("[%s] getsockopt(XDP_STATISTICS) error %u %s\n",
1495 __func__, -err, strerror(-err));
1496 return TEST_FAILURE;
1499 expected_len = sizeof(struct xdp_statistics);
1500 if (optlen != expected_len) {
1501 ksft_print_msg("[%s] getsockopt optlen error. Expected: %u got: %u\n",
1502 __func__, expected_len, optlen);
1503 return TEST_FAILURE;
1509 static int validate_rx_dropped(struct ifobject *ifobject)
1511 struct xsk_socket *xsk = ifobject->xsk->xsk;
1512 struct xdp_statistics stats;
1515 err = kick_rx(ifobject->xsk);
1517 return TEST_FAILURE;
1519 err = get_xsk_stats(xsk, &stats);
1521 return TEST_FAILURE;
1523 /* The receiver calls getsockopt after receiving the last (valid)
1524 * packet which is not the final packet sent in this test (valid and
1525 * invalid packets are sent in alternating fashion with the final
1526 * packet being invalid). Since the last packet may or may not have
1527 * been dropped already, both outcomes must be allowed.
1529 if (stats.rx_dropped == ifobject->xsk->pkt_stream->nb_pkts / 2 ||
1530 stats.rx_dropped == ifobject->xsk->pkt_stream->nb_pkts / 2 - 1)
1533 return TEST_FAILURE;
1536 static int validate_rx_full(struct ifobject *ifobject)
1538 struct xsk_socket *xsk = ifobject->xsk->xsk;
1539 struct xdp_statistics stats;
1543 err = kick_rx(ifobject->xsk);
1545 return TEST_FAILURE;
1547 err = get_xsk_stats(xsk, &stats);
1549 return TEST_FAILURE;
1551 if (stats.rx_ring_full)
1554 return TEST_FAILURE;
1557 static int validate_fill_empty(struct ifobject *ifobject)
1559 struct xsk_socket *xsk = ifobject->xsk->xsk;
1560 struct xdp_statistics stats;
1564 err = kick_rx(ifobject->xsk);
1566 return TEST_FAILURE;
1568 err = get_xsk_stats(xsk, &stats);
1570 return TEST_FAILURE;
1572 if (stats.rx_fill_ring_empty_descs)
1575 return TEST_FAILURE;
1578 static int validate_tx_invalid_descs(struct ifobject *ifobject)
1580 struct xsk_socket *xsk = ifobject->xsk->xsk;
1581 int fd = xsk_socket__fd(xsk);
1582 struct xdp_statistics stats;
1586 optlen = sizeof(stats);
1587 err = getsockopt(fd, SOL_XDP, XDP_STATISTICS, &stats, &optlen);
1589 ksft_print_msg("[%s] getsockopt(XDP_STATISTICS) error %u %s\n",
1590 __func__, -err, strerror(-err));
1591 return TEST_FAILURE;
1594 if (stats.tx_invalid_descs != ifobject->xsk->pkt_stream->nb_pkts / 2) {
1595 ksft_print_msg("[%s] tx_invalid_descs incorrect. Got [%llu] expected [%u]\n",
1597 (unsigned long long)stats.tx_invalid_descs,
1598 ifobject->xsk->pkt_stream->nb_pkts);
1599 return TEST_FAILURE;
1605 static void xsk_configure_socket(struct test_spec *test, struct ifobject *ifobject,
1606 struct xsk_umem_info *umem, bool tx)
1610 for (i = 0; i < test->nb_sockets; i++) {
1611 bool shared = (ifobject->shared_umem && tx) ? true : !!i;
1614 while (ctr++ < SOCK_RECONF_CTR) {
1615 ret = __xsk_configure_socket(&ifobject->xsk_arr[i], umem,
1620 /* Retry if it fails as xsk_socket__create() is asynchronous */
1621 if (ctr >= SOCK_RECONF_CTR)
1622 exit_with_error(-ret);
1625 if (ifobject->busy_poll)
1626 enable_busy_poll(&ifobject->xsk_arr[i]);
1630 static void thread_common_ops_tx(struct test_spec *test, struct ifobject *ifobject)
1632 xsk_configure_socket(test, ifobject, test->ifobj_rx->umem, true);
1633 ifobject->xsk = &ifobject->xsk_arr[0];
1634 ifobject->xskmap = test->ifobj_rx->xskmap;
1635 memcpy(ifobject->umem, test->ifobj_rx->umem, sizeof(struct xsk_umem_info));
1636 ifobject->umem->base_addr = 0;
1639 static void xsk_populate_fill_ring(struct xsk_umem_info *umem, struct pkt_stream *pkt_stream,
1642 u32 rx_frame_size = umem->frame_size - XDP_PACKET_HEADROOM;
1643 u32 idx = 0, filled = 0, buffers_to_fill, nb_pkts;
1646 if (umem->num_frames < XSK_RING_PROD__DEFAULT_NUM_DESCS)
1647 buffers_to_fill = umem->num_frames;
1649 buffers_to_fill = umem->fill_size;
1651 ret = xsk_ring_prod__reserve(&umem->fq, buffers_to_fill, &idx);
1652 if (ret != buffers_to_fill)
1653 exit_with_error(ENOSPC);
1655 while (filled < buffers_to_fill) {
1656 struct pkt *pkt = pkt_stream_get_next_rx_pkt(pkt_stream, &nb_pkts);
1660 for (i = 0; i < pkt_nb_frags(rx_frame_size, pkt_stream, pkt); i++) {
1664 addr = filled * umem->frame_size + umem->base_addr;
1665 } else if (pkt->offset >= 0) {
1666 addr = pkt->offset % umem->frame_size + umem_alloc_buffer(umem);
1668 addr = pkt->offset + umem_alloc_buffer(umem);
1671 *xsk_ring_prod__fill_addr(&umem->fq, idx++) = addr;
1672 if (++filled >= buffers_to_fill)
1676 xsk_ring_prod__submit(&umem->fq, filled);
1677 xsk_ring_prod__cancel(&umem->fq, buffers_to_fill - filled);
1679 pkt_stream_reset(pkt_stream);
1680 umem_reset_alloc(umem);
1683 static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
1685 u64 umem_sz = ifobject->umem->num_frames * ifobject->umem->frame_size;
1686 int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
1687 LIBBPF_OPTS(bpf_xdp_query_opts, opts);
1692 if (ifobject->umem->unaligned_mode)
1693 mmap_flags |= MAP_HUGETLB | MAP_HUGE_2MB;
1695 if (ifobject->shared_umem)
1698 bufs = mmap(NULL, umem_sz, PROT_READ | PROT_WRITE, mmap_flags, -1, 0);
1699 if (bufs == MAP_FAILED)
1700 exit_with_error(errno);
1702 ret = xsk_configure_umem(ifobject, ifobject->umem, bufs, umem_sz);
1704 exit_with_error(-ret);
1706 xsk_configure_socket(test, ifobject, ifobject->umem, false);
1708 ifobject->xsk = &ifobject->xsk_arr[0];
1710 if (!ifobject->rx_on)
1713 xsk_populate_fill_ring(ifobject->umem, ifobject->xsk->pkt_stream, ifobject->use_fill_ring);
1715 for (i = 0; i < test->nb_sockets; i++) {
1716 ifobject->xsk = &ifobject->xsk_arr[i];
1717 ret = xsk_update_xskmap(ifobject->xskmap, ifobject->xsk->xsk, i);
1719 exit_with_error(errno);
1723 static void *worker_testapp_validate_tx(void *arg)
1725 struct test_spec *test = (struct test_spec *)arg;
1726 struct ifobject *ifobject = test->ifobj_tx;
1729 if (test->current_step == 1) {
1730 if (!ifobject->shared_umem)
1731 thread_common_ops(test, ifobject);
1733 thread_common_ops_tx(test, ifobject);
1736 err = send_pkts(test, ifobject);
1738 if (!err && ifobject->validation_func)
1739 err = ifobject->validation_func(ifobject);
1741 report_failure(test);
1746 static void *worker_testapp_validate_rx(void *arg)
1748 struct test_spec *test = (struct test_spec *)arg;
1749 struct ifobject *ifobject = test->ifobj_rx;
1752 if (test->current_step == 1) {
1753 thread_common_ops(test, ifobject);
1755 xsk_clear_xskmap(ifobject->xskmap);
1756 err = xsk_update_xskmap(ifobject->xskmap, ifobject->xsk->xsk, 0);
1758 ksft_print_msg("Error: Failed to update xskmap, error %s\n",
1760 exit_with_error(-err);
1764 pthread_barrier_wait(&barr);
1766 err = receive_pkts(test);
1768 if (!err && ifobject->validation_func)
1769 err = ifobject->validation_func(ifobject);
1771 report_failure(test);
1776 static u64 ceil_u64(u64 a, u64 b)
1778 return (a + b - 1) / b;
1781 static void testapp_clean_xsk_umem(struct ifobject *ifobj)
1783 u64 umem_sz = ifobj->umem->num_frames * ifobj->umem->frame_size;
1785 if (ifobj->shared_umem)
1788 umem_sz = ceil_u64(umem_sz, HUGEPAGE_SIZE) * HUGEPAGE_SIZE;
1789 xsk_umem__delete(ifobj->umem->umem);
1790 munmap(ifobj->umem->buffer, umem_sz);
1793 static void handler(int signum)
1798 static bool xdp_prog_changed_rx(struct test_spec *test)
1800 struct ifobject *ifobj = test->ifobj_rx;
1802 return ifobj->xdp_prog != test->xdp_prog_rx || ifobj->mode != test->mode;
1805 static bool xdp_prog_changed_tx(struct test_spec *test)
1807 struct ifobject *ifobj = test->ifobj_tx;
1809 return ifobj->xdp_prog != test->xdp_prog_tx || ifobj->mode != test->mode;
1812 static void xsk_reattach_xdp(struct ifobject *ifobj, struct bpf_program *xdp_prog,
1813 struct bpf_map *xskmap, enum test_mode mode)
1817 xsk_detach_xdp_program(ifobj->ifindex, mode_to_xdp_flags(ifobj->mode));
1818 err = xsk_attach_xdp_program(xdp_prog, ifobj->ifindex, mode_to_xdp_flags(mode));
1820 ksft_print_msg("Error attaching XDP program\n");
1821 exit_with_error(-err);
1824 if (ifobj->mode != mode && (mode == TEST_MODE_DRV || mode == TEST_MODE_ZC))
1825 if (!xsk_is_in_mode(ifobj->ifindex, XDP_FLAGS_DRV_MODE)) {
1826 ksft_print_msg("ERROR: XDP prog not in DRV mode\n");
1827 exit_with_error(EINVAL);
1830 ifobj->xdp_prog = xdp_prog;
1831 ifobj->xskmap = xskmap;
1835 static void xsk_attach_xdp_progs(struct test_spec *test, struct ifobject *ifobj_rx,
1836 struct ifobject *ifobj_tx)
1838 if (xdp_prog_changed_rx(test))
1839 xsk_reattach_xdp(ifobj_rx, test->xdp_prog_rx, test->xskmap_rx, test->mode);
1841 if (!ifobj_tx || ifobj_tx->shared_umem)
1844 if (xdp_prog_changed_tx(test))
1845 xsk_reattach_xdp(ifobj_tx, test->xdp_prog_tx, test->xskmap_tx, test->mode);
1848 static int __testapp_validate_traffic(struct test_spec *test, struct ifobject *ifobj1,
1849 struct ifobject *ifobj2)
1854 if (test->mtu > MAX_ETH_PKT_SIZE) {
1855 if (test->mode == TEST_MODE_ZC && (!ifobj1->multi_buff_zc_supp ||
1856 (ifobj2 && !ifobj2->multi_buff_zc_supp))) {
1857 ksft_test_result_skip("Multi buffer for zero-copy not supported.\n");
1860 if (test->mode != TEST_MODE_ZC && (!ifobj1->multi_buff_supp ||
1861 (ifobj2 && !ifobj2->multi_buff_supp))) {
1862 ksft_test_result_skip("Multi buffer not supported.\n");
1866 err = test_spec_set_mtu(test, test->mtu);
1868 ksft_print_msg("Error, could not set mtu.\n");
1869 exit_with_error(err);
1873 if (pthread_barrier_init(&barr, NULL, 2))
1874 exit_with_error(errno);
1875 pkt_stream_reset(ifobj2->xsk->pkt_stream);
1878 test->current_step++;
1879 pkt_stream_reset(ifobj1->xsk->pkt_stream);
1882 signal(SIGUSR1, handler);
1883 /*Spawn RX thread */
1884 pthread_create(&t0, NULL, ifobj1->func_ptr, test);
1887 pthread_barrier_wait(&barr);
1888 if (pthread_barrier_destroy(&barr))
1889 exit_with_error(errno);
1891 /*Spawn TX thread */
1892 pthread_create(&t1, NULL, ifobj2->func_ptr, test);
1894 pthread_join(t1, NULL);
1898 pthread_kill(t0, SIGUSR1);
1900 pthread_join(t0, NULL);
1902 if (test->total_steps == test->current_step || test->fail) {
1906 for (i = 0; i < test->nb_sockets; i++)
1907 xsk_socket__delete(ifobj2->xsk_arr[i].xsk);
1909 for (i = 0; i < test->nb_sockets; i++)
1910 xsk_socket__delete(ifobj1->xsk_arr[i].xsk);
1912 testapp_clean_xsk_umem(ifobj1);
1913 if (ifobj2 && !ifobj2->shared_umem)
1914 testapp_clean_xsk_umem(ifobj2);
1917 return !!test->fail;
1920 static int testapp_validate_traffic(struct test_spec *test)
1922 struct ifobject *ifobj_rx = test->ifobj_rx;
1923 struct ifobject *ifobj_tx = test->ifobj_tx;
1925 if ((ifobj_rx->umem->unaligned_mode && !ifobj_rx->unaligned_supp) ||
1926 (ifobj_tx->umem->unaligned_mode && !ifobj_tx->unaligned_supp)) {
1927 ksft_test_result_skip("No huge pages present.\n");
1931 if (test->set_ring) {
1932 if (ifobj_tx->hw_ring_size_supp) {
1933 if (set_ring_size(ifobj_tx)) {
1934 ksft_test_result_skip("Failed to change HW ring size.\n");
1935 return TEST_FAILURE;
1938 ksft_test_result_skip("Changing HW ring size not supported.\n");
1943 xsk_attach_xdp_progs(test, ifobj_rx, ifobj_tx);
1944 return __testapp_validate_traffic(test, ifobj_rx, ifobj_tx);
1947 static int testapp_validate_traffic_single_thread(struct test_spec *test, struct ifobject *ifobj)
1949 return __testapp_validate_traffic(test, ifobj, NULL);
1952 static int testapp_teardown(struct test_spec *test)
1956 for (i = 0; i < MAX_TEARDOWN_ITER; i++) {
1957 if (testapp_validate_traffic(test))
1958 return TEST_FAILURE;
1959 test_spec_reset(test);
1965 static void swap_directions(struct ifobject **ifobj1, struct ifobject **ifobj2)
1967 thread_func_t tmp_func_ptr = (*ifobj1)->func_ptr;
1968 struct ifobject *tmp_ifobj = (*ifobj1);
1970 (*ifobj1)->func_ptr = (*ifobj2)->func_ptr;
1971 (*ifobj2)->func_ptr = tmp_func_ptr;
1974 *ifobj2 = tmp_ifobj;
1977 static int testapp_bidirectional(struct test_spec *test)
1981 test->ifobj_tx->rx_on = true;
1982 test->ifobj_rx->tx_on = true;
1983 test->total_steps = 2;
1984 if (testapp_validate_traffic(test))
1985 return TEST_FAILURE;
1987 print_verbose("Switching Tx/Rx direction\n");
1988 swap_directions(&test->ifobj_rx, &test->ifobj_tx);
1989 res = __testapp_validate_traffic(test, test->ifobj_rx, test->ifobj_tx);
1991 swap_directions(&test->ifobj_rx, &test->ifobj_tx);
1995 static int swap_xsk_resources(struct test_spec *test)
1999 test->ifobj_tx->xsk_arr[0].pkt_stream = NULL;
2000 test->ifobj_rx->xsk_arr[0].pkt_stream = NULL;
2001 test->ifobj_tx->xsk_arr[1].pkt_stream = test->tx_pkt_stream_default;
2002 test->ifobj_rx->xsk_arr[1].pkt_stream = test->rx_pkt_stream_default;
2003 test->ifobj_tx->xsk = &test->ifobj_tx->xsk_arr[1];
2004 test->ifobj_rx->xsk = &test->ifobj_rx->xsk_arr[1];
2006 ret = xsk_update_xskmap(test->ifobj_rx->xskmap, test->ifobj_rx->xsk->xsk, 0);
2008 return TEST_FAILURE;
2013 static int testapp_xdp_prog_cleanup(struct test_spec *test)
2015 test->total_steps = 2;
2016 test->nb_sockets = 2;
2017 if (testapp_validate_traffic(test))
2018 return TEST_FAILURE;
2020 if (swap_xsk_resources(test))
2021 return TEST_FAILURE;
2022 return testapp_validate_traffic(test);
2025 static int testapp_headroom(struct test_spec *test)
2027 test->ifobj_rx->umem->frame_headroom = UMEM_HEADROOM_TEST_SIZE;
2028 return testapp_validate_traffic(test);
2031 static int testapp_stats_rx_dropped(struct test_spec *test)
2033 if (test->mode == TEST_MODE_ZC) {
2034 ksft_test_result_skip("Can not run RX_DROPPED test for ZC mode\n");
2038 pkt_stream_replace_half(test, MIN_PKT_SIZE * 4, 0);
2039 test->ifobj_rx->umem->frame_headroom = test->ifobj_rx->umem->frame_size -
2040 XDP_PACKET_HEADROOM - MIN_PKT_SIZE * 3;
2041 pkt_stream_receive_half(test);
2042 test->ifobj_rx->validation_func = validate_rx_dropped;
2043 return testapp_validate_traffic(test);
2046 static int testapp_stats_tx_invalid_descs(struct test_spec *test)
2048 pkt_stream_replace_half(test, XSK_UMEM__INVALID_FRAME_SIZE, 0);
2049 test->ifobj_tx->validation_func = validate_tx_invalid_descs;
2050 return testapp_validate_traffic(test);
2053 static int testapp_stats_rx_full(struct test_spec *test)
2055 pkt_stream_replace(test, DEFAULT_UMEM_BUFFERS + DEFAULT_UMEM_BUFFERS / 2, MIN_PKT_SIZE);
2056 test->ifobj_rx->xsk->pkt_stream = pkt_stream_generate(DEFAULT_UMEM_BUFFERS, MIN_PKT_SIZE);
2058 test->ifobj_rx->xsk->rxqsize = DEFAULT_UMEM_BUFFERS;
2059 test->ifobj_rx->release_rx = false;
2060 test->ifobj_rx->validation_func = validate_rx_full;
2061 return testapp_validate_traffic(test);
2064 static int testapp_stats_fill_empty(struct test_spec *test)
2066 pkt_stream_replace(test, DEFAULT_UMEM_BUFFERS + DEFAULT_UMEM_BUFFERS / 2, MIN_PKT_SIZE);
2067 test->ifobj_rx->xsk->pkt_stream = pkt_stream_generate(DEFAULT_UMEM_BUFFERS, MIN_PKT_SIZE);
2069 test->ifobj_rx->use_fill_ring = false;
2070 test->ifobj_rx->validation_func = validate_fill_empty;
2071 return testapp_validate_traffic(test);
2074 static int testapp_send_receive_unaligned(struct test_spec *test)
2076 test->ifobj_tx->umem->unaligned_mode = true;
2077 test->ifobj_rx->umem->unaligned_mode = true;
2078 /* Let half of the packets straddle a 4K buffer boundary */
2079 pkt_stream_replace_half(test, MIN_PKT_SIZE, -MIN_PKT_SIZE / 2);
2081 return testapp_validate_traffic(test);
2084 static int testapp_send_receive_unaligned_mb(struct test_spec *test)
2086 test->mtu = MAX_ETH_JUMBO_SIZE;
2087 test->ifobj_tx->umem->unaligned_mode = true;
2088 test->ifobj_rx->umem->unaligned_mode = true;
2089 pkt_stream_replace(test, DEFAULT_PKT_CNT, MAX_ETH_JUMBO_SIZE);
2090 return testapp_validate_traffic(test);
2093 static int testapp_single_pkt(struct test_spec *test)
2095 struct pkt pkts[] = {{0, MIN_PKT_SIZE, 0, true}};
2097 pkt_stream_generate_custom(test, pkts, ARRAY_SIZE(pkts));
2098 return testapp_validate_traffic(test);
2101 static int testapp_send_receive_mb(struct test_spec *test)
2103 test->mtu = MAX_ETH_JUMBO_SIZE;
2104 pkt_stream_replace(test, DEFAULT_PKT_CNT, MAX_ETH_JUMBO_SIZE);
2106 return testapp_validate_traffic(test);
2109 static int testapp_invalid_desc_mb(struct test_spec *test)
2111 struct xsk_umem_info *umem = test->ifobj_tx->umem;
2112 u64 umem_size = umem->num_frames * umem->frame_size;
2113 struct pkt pkts[] = {
2114 /* Valid packet for synch to start with */
2115 {0, MIN_PKT_SIZE, 0, true, 0},
2116 /* Zero frame len is not legal */
2117 {0, XSK_UMEM__LARGE_FRAME_SIZE, 0, false, XDP_PKT_CONTD},
2118 {0, XSK_UMEM__LARGE_FRAME_SIZE, 0, false, XDP_PKT_CONTD},
2119 {0, 0, 0, false, 0},
2120 /* Invalid address in the second frame */
2121 {0, XSK_UMEM__LARGE_FRAME_SIZE, 0, false, XDP_PKT_CONTD},
2122 {umem_size, XSK_UMEM__LARGE_FRAME_SIZE, 0, false, XDP_PKT_CONTD},
2123 /* Invalid len in the middle */
2124 {0, XSK_UMEM__LARGE_FRAME_SIZE, 0, false, XDP_PKT_CONTD},
2125 {0, XSK_UMEM__INVALID_FRAME_SIZE, 0, false, XDP_PKT_CONTD},
2126 /* Invalid options in the middle */
2127 {0, XSK_UMEM__LARGE_FRAME_SIZE, 0, false, XDP_PKT_CONTD},
2128 {0, XSK_UMEM__LARGE_FRAME_SIZE, 0, false, XSK_DESC__INVALID_OPTION},
2129 /* Transmit 2 frags, receive 3 */
2130 {0, XSK_UMEM__MAX_FRAME_SIZE, 0, true, XDP_PKT_CONTD},
2131 {0, XSK_UMEM__MAX_FRAME_SIZE, 0, true, 0},
2132 /* Middle frame crosses chunk boundary with small length */
2133 {0, XSK_UMEM__LARGE_FRAME_SIZE, 0, false, XDP_PKT_CONTD},
2134 {-MIN_PKT_SIZE / 2, MIN_PKT_SIZE, 0, false, 0},
2135 /* Valid packet for synch so that something is received */
2136 {0, MIN_PKT_SIZE, 0, true, 0}};
2138 if (umem->unaligned_mode) {
2139 /* Crossing a chunk boundary allowed */
2140 pkts[12].valid = true;
2141 pkts[13].valid = true;
2144 test->mtu = MAX_ETH_JUMBO_SIZE;
2145 pkt_stream_generate_custom(test, pkts, ARRAY_SIZE(pkts));
2146 return testapp_validate_traffic(test);
2149 static int testapp_invalid_desc(struct test_spec *test)
2151 struct xsk_umem_info *umem = test->ifobj_tx->umem;
2152 u64 umem_size = umem->num_frames * umem->frame_size;
2153 struct pkt pkts[] = {
2154 /* Zero packet address allowed */
2155 {0, MIN_PKT_SIZE, 0, true},
2156 /* Allowed packet */
2157 {0, MIN_PKT_SIZE, 0, true},
2158 /* Straddling the start of umem */
2159 {-2, MIN_PKT_SIZE, 0, false},
2160 /* Packet too large */
2161 {0, XSK_UMEM__INVALID_FRAME_SIZE, 0, false},
2162 /* Up to end of umem allowed */
2163 {umem_size - MIN_PKT_SIZE - 2 * umem->frame_size, MIN_PKT_SIZE, 0, true},
2164 /* After umem ends */
2165 {umem_size, MIN_PKT_SIZE, 0, false},
2166 /* Straddle the end of umem */
2167 {umem_size - MIN_PKT_SIZE / 2, MIN_PKT_SIZE, 0, false},
2168 /* Straddle a 4K boundary */
2169 {0x1000 - MIN_PKT_SIZE / 2, MIN_PKT_SIZE, 0, false},
2170 /* Straddle a 2K boundary */
2171 {0x800 - MIN_PKT_SIZE / 2, MIN_PKT_SIZE, 0, true},
2172 /* Valid packet for synch so that something is received */
2173 {0, MIN_PKT_SIZE, 0, true}};
2175 if (umem->unaligned_mode) {
2176 /* Crossing a page boundary allowed */
2177 pkts[7].valid = true;
2179 if (umem->frame_size == XSK_UMEM__DEFAULT_FRAME_SIZE / 2) {
2180 /* Crossing a 2K frame size boundary not allowed */
2181 pkts[8].valid = false;
2184 if (test->ifobj_tx->shared_umem) {
2185 pkts[4].offset += umem_size;
2186 pkts[5].offset += umem_size;
2187 pkts[6].offset += umem_size;
2190 pkt_stream_generate_custom(test, pkts, ARRAY_SIZE(pkts));
2191 return testapp_validate_traffic(test);
2194 static int testapp_xdp_drop(struct test_spec *test)
2196 struct xsk_xdp_progs *skel_rx = test->ifobj_rx->xdp_progs;
2197 struct xsk_xdp_progs *skel_tx = test->ifobj_tx->xdp_progs;
2199 test_spec_set_xdp_prog(test, skel_rx->progs.xsk_xdp_drop, skel_tx->progs.xsk_xdp_drop,
2200 skel_rx->maps.xsk, skel_tx->maps.xsk);
2202 pkt_stream_receive_half(test);
2203 return testapp_validate_traffic(test);
2206 static int testapp_xdp_metadata_copy(struct test_spec *test)
2208 struct xsk_xdp_progs *skel_rx = test->ifobj_rx->xdp_progs;
2209 struct xsk_xdp_progs *skel_tx = test->ifobj_tx->xdp_progs;
2210 struct bpf_map *data_map;
2214 test_spec_set_xdp_prog(test, skel_rx->progs.xsk_xdp_populate_metadata,
2215 skel_tx->progs.xsk_xdp_populate_metadata,
2216 skel_rx->maps.xsk, skel_tx->maps.xsk);
2217 test->ifobj_rx->use_metadata = true;
2219 data_map = bpf_object__find_map_by_name(skel_rx->obj, "xsk_xdp_.bss");
2220 if (!data_map || !bpf_map__is_internal(data_map)) {
2221 ksft_print_msg("Error: could not find bss section of XDP program\n");
2222 return TEST_FAILURE;
2225 if (bpf_map_update_elem(bpf_map__fd(data_map), &key, &count, BPF_ANY)) {
2226 ksft_print_msg("Error: could not update count element\n");
2227 return TEST_FAILURE;
2230 return testapp_validate_traffic(test);
2233 static int testapp_xdp_shared_umem(struct test_spec *test)
2235 struct xsk_xdp_progs *skel_rx = test->ifobj_rx->xdp_progs;
2236 struct xsk_xdp_progs *skel_tx = test->ifobj_tx->xdp_progs;
2238 test->total_steps = 1;
2239 test->nb_sockets = 2;
2241 test_spec_set_xdp_prog(test, skel_rx->progs.xsk_xdp_shared_umem,
2242 skel_tx->progs.xsk_xdp_shared_umem,
2243 skel_rx->maps.xsk, skel_tx->maps.xsk);
2245 pkt_stream_even_odd_sequence(test);
2247 return testapp_validate_traffic(test);
2250 static int testapp_poll_txq_tmout(struct test_spec *test)
2252 test->ifobj_tx->use_poll = true;
2253 /* create invalid frame by set umem frame_size and pkt length equal to 2048 */
2254 test->ifobj_tx->umem->frame_size = 2048;
2255 pkt_stream_replace(test, 2 * DEFAULT_PKT_CNT, 2048);
2256 return testapp_validate_traffic_single_thread(test, test->ifobj_tx);
2259 static int testapp_poll_rxq_tmout(struct test_spec *test)
2261 test->ifobj_rx->use_poll = true;
2262 return testapp_validate_traffic_single_thread(test, test->ifobj_rx);
2265 static int testapp_too_many_frags(struct test_spec *test)
2271 if (test->mode == TEST_MODE_ZC) {
2272 max_frags = test->ifobj_tx->xdp_zc_max_segs;
2274 max_frags = get_max_skb_frags();
2276 ksft_print_msg("Couldn't retrieve MAX_SKB_FRAGS from system, using default (17) value\n");
2282 pkts = calloc(2 * max_frags + 2, sizeof(struct pkt));
2284 return TEST_FAILURE;
2286 test->mtu = MAX_ETH_JUMBO_SIZE;
2288 /* Valid packet for synch */
2289 pkts[0].len = MIN_PKT_SIZE;
2290 pkts[0].valid = true;
2292 /* One valid packet with the max amount of frags */
2293 for (i = 1; i < max_frags + 1; i++) {
2294 pkts[i].len = MIN_PKT_SIZE;
2295 pkts[i].options = XDP_PKT_CONTD;
2296 pkts[i].valid = true;
2298 pkts[max_frags].options = 0;
2300 /* An invalid packet with the max amount of frags but signals packet
2301 * continues on the last frag
2303 for (i = max_frags + 1; i < 2 * max_frags + 1; i++) {
2304 pkts[i].len = MIN_PKT_SIZE;
2305 pkts[i].options = XDP_PKT_CONTD;
2306 pkts[i].valid = false;
2309 /* Valid packet for synch */
2310 pkts[2 * max_frags + 1].len = MIN_PKT_SIZE;
2311 pkts[2 * max_frags + 1].valid = true;
2313 pkt_stream_generate_custom(test, pkts, 2 * max_frags + 2);
2314 ret = testapp_validate_traffic(test);
2320 static int xsk_load_xdp_programs(struct ifobject *ifobj)
2322 ifobj->xdp_progs = xsk_xdp_progs__open_and_load();
2323 if (libbpf_get_error(ifobj->xdp_progs))
2324 return libbpf_get_error(ifobj->xdp_progs);
2329 static void xsk_unload_xdp_programs(struct ifobject *ifobj)
2331 xsk_xdp_progs__destroy(ifobj->xdp_progs);
2335 static bool hugepages_present(void)
2337 size_t mmap_sz = 2 * DEFAULT_UMEM_BUFFERS * XSK_UMEM__DEFAULT_FRAME_SIZE;
2340 bufs = mmap(NULL, mmap_sz, PROT_READ | PROT_WRITE,
2341 MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, MAP_HUGE_2MB);
2342 if (bufs == MAP_FAILED)
2345 mmap_sz = ceil_u64(mmap_sz, HUGEPAGE_SIZE) * HUGEPAGE_SIZE;
2346 munmap(bufs, mmap_sz);
2350 static void init_iface(struct ifobject *ifobj, thread_func_t func_ptr)
2352 LIBBPF_OPTS(bpf_xdp_query_opts, query_opts);
2355 ifobj->func_ptr = func_ptr;
2357 err = xsk_load_xdp_programs(ifobj);
2359 ksft_print_msg("Error loading XDP program\n");
2360 exit_with_error(err);
2363 if (hugepages_present())
2364 ifobj->unaligned_supp = true;
2366 err = bpf_xdp_query(ifobj->ifindex, XDP_FLAGS_DRV_MODE, &query_opts);
2368 ksft_print_msg("Error querying XDP capabilities\n");
2369 exit_with_error(-err);
2371 if (query_opts.feature_flags & NETDEV_XDP_ACT_RX_SG)
2372 ifobj->multi_buff_supp = true;
2373 if (query_opts.feature_flags & NETDEV_XDP_ACT_XSK_ZEROCOPY) {
2374 if (query_opts.xdp_zc_max_segs > 1) {
2375 ifobj->multi_buff_zc_supp = true;
2376 ifobj->xdp_zc_max_segs = query_opts.xdp_zc_max_segs;
2378 ifobj->xdp_zc_max_segs = 0;
2383 static int testapp_send_receive(struct test_spec *test)
2385 return testapp_validate_traffic(test);
2388 static int testapp_send_receive_2k_frame(struct test_spec *test)
2390 test->ifobj_tx->umem->frame_size = 2048;
2391 test->ifobj_rx->umem->frame_size = 2048;
2392 pkt_stream_replace(test, DEFAULT_PKT_CNT, MIN_PKT_SIZE);
2393 return testapp_validate_traffic(test);
2396 static int testapp_poll_rx(struct test_spec *test)
2398 test->ifobj_rx->use_poll = true;
2399 return testapp_validate_traffic(test);
2402 static int testapp_poll_tx(struct test_spec *test)
2404 test->ifobj_tx->use_poll = true;
2405 return testapp_validate_traffic(test);
2408 static int testapp_aligned_inv_desc(struct test_spec *test)
2410 return testapp_invalid_desc(test);
2413 static int testapp_aligned_inv_desc_2k_frame(struct test_spec *test)
2415 test->ifobj_tx->umem->frame_size = 2048;
2416 test->ifobj_rx->umem->frame_size = 2048;
2417 return testapp_invalid_desc(test);
2420 static int testapp_unaligned_inv_desc(struct test_spec *test)
2422 test->ifobj_tx->umem->unaligned_mode = true;
2423 test->ifobj_rx->umem->unaligned_mode = true;
2424 return testapp_invalid_desc(test);
2427 static int testapp_unaligned_inv_desc_4001_frame(struct test_spec *test)
2429 u64 page_size, umem_size;
2431 /* Odd frame size so the UMEM doesn't end near a page boundary. */
2432 test->ifobj_tx->umem->frame_size = 4001;
2433 test->ifobj_rx->umem->frame_size = 4001;
2434 test->ifobj_tx->umem->unaligned_mode = true;
2435 test->ifobj_rx->umem->unaligned_mode = true;
2436 /* This test exists to test descriptors that staddle the end of
2437 * the UMEM but not a page.
2439 page_size = sysconf(_SC_PAGESIZE);
2440 umem_size = test->ifobj_tx->umem->num_frames * test->ifobj_tx->umem->frame_size;
2441 assert(umem_size % page_size > MIN_PKT_SIZE);
2442 assert(umem_size % page_size < page_size - MIN_PKT_SIZE);
2444 return testapp_invalid_desc(test);
2447 static int testapp_aligned_inv_desc_mb(struct test_spec *test)
2449 return testapp_invalid_desc_mb(test);
2452 static int testapp_unaligned_inv_desc_mb(struct test_spec *test)
2454 test->ifobj_tx->umem->unaligned_mode = true;
2455 test->ifobj_rx->umem->unaligned_mode = true;
2456 return testapp_invalid_desc_mb(test);
2459 static int testapp_xdp_metadata(struct test_spec *test)
2461 return testapp_xdp_metadata_copy(test);
2464 static int testapp_xdp_metadata_mb(struct test_spec *test)
2466 test->mtu = MAX_ETH_JUMBO_SIZE;
2467 return testapp_xdp_metadata_copy(test);
2470 static int testapp_hw_sw_min_ring_size(struct test_spec *test)
2474 test->set_ring = true;
2475 test->total_steps = 2;
2476 test->ifobj_tx->ring.tx_pending = DEFAULT_BATCH_SIZE;
2477 test->ifobj_tx->ring.rx_pending = DEFAULT_BATCH_SIZE * 2;
2478 test->ifobj_tx->xsk->batch_size = 1;
2479 test->ifobj_rx->xsk->batch_size = 1;
2480 ret = testapp_validate_traffic(test);
2484 /* Set batch size to hw_ring_size - 1 */
2485 test->ifobj_tx->xsk->batch_size = DEFAULT_BATCH_SIZE - 1;
2486 test->ifobj_rx->xsk->batch_size = DEFAULT_BATCH_SIZE - 1;
2487 return testapp_validate_traffic(test);
2490 static int testapp_hw_sw_max_ring_size(struct test_spec *test)
2492 u32 max_descs = XSK_RING_PROD__DEFAULT_NUM_DESCS * 4;
2495 test->set_ring = true;
2496 test->total_steps = 2;
2497 test->ifobj_tx->ring.tx_pending = test->ifobj_tx->ring.tx_max_pending;
2498 test->ifobj_tx->ring.rx_pending = test->ifobj_tx->ring.rx_max_pending;
2499 test->ifobj_rx->umem->num_frames = max_descs;
2500 test->ifobj_rx->umem->fill_size = max_descs;
2501 test->ifobj_rx->umem->comp_size = max_descs;
2502 test->ifobj_tx->xsk->batch_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
2503 test->ifobj_rx->xsk->batch_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
2505 ret = testapp_validate_traffic(test);
2509 /* Set batch_size to 8152 for testing, as the ice HW ignores the 3 lowest bits when
2510 * updating the Rx HW tail register.
2512 test->ifobj_tx->xsk->batch_size = test->ifobj_tx->ring.tx_max_pending - 8;
2513 test->ifobj_rx->xsk->batch_size = test->ifobj_tx->ring.tx_max_pending - 8;
2514 pkt_stream_replace(test, max_descs, MIN_PKT_SIZE);
2515 return testapp_validate_traffic(test);
2518 static void run_pkt_test(struct test_spec *test)
2522 ret = test->test_func(test);
2524 if (ret == TEST_PASS)
2525 ksft_test_result_pass("PASS: %s %s%s\n", mode_string(test), busy_poll_string(test),
2527 pkt_stream_restore_default(test);
2530 static struct ifobject *ifobject_create(void)
2532 struct ifobject *ifobj;
2534 ifobj = calloc(1, sizeof(struct ifobject));
2538 ifobj->xsk_arr = calloc(MAX_SOCKETS, sizeof(*ifobj->xsk_arr));
2539 if (!ifobj->xsk_arr)
2542 ifobj->umem = calloc(1, sizeof(*ifobj->umem));
2549 free(ifobj->xsk_arr);
2555 static void ifobject_delete(struct ifobject *ifobj)
2558 free(ifobj->xsk_arr);
2562 static bool is_xdp_supported(int ifindex)
2564 int flags = XDP_FLAGS_DRV_MODE;
2566 LIBBPF_OPTS(bpf_link_create_opts, opts, .flags = flags);
2567 struct bpf_insn insns[2] = {
2568 BPF_MOV64_IMM(BPF_REG_0, XDP_PASS),
2571 int prog_fd, insn_cnt = ARRAY_SIZE(insns);
2574 prog_fd = bpf_prog_load(BPF_PROG_TYPE_XDP, NULL, "GPL", insns, insn_cnt, NULL);
2578 err = bpf_xdp_attach(ifindex, prog_fd, flags, NULL);
2584 bpf_xdp_detach(ifindex, flags, NULL);
2590 static const struct test_spec tests[] = {
2591 {.name = "SEND_RECEIVE", .test_func = testapp_send_receive},
2592 {.name = "SEND_RECEIVE_2K_FRAME", .test_func = testapp_send_receive_2k_frame},
2593 {.name = "SEND_RECEIVE_SINGLE_PKT", .test_func = testapp_single_pkt},
2594 {.name = "POLL_RX", .test_func = testapp_poll_rx},
2595 {.name = "POLL_TX", .test_func = testapp_poll_tx},
2596 {.name = "POLL_RXQ_FULL", .test_func = testapp_poll_rxq_tmout},
2597 {.name = "POLL_TXQ_FULL", .test_func = testapp_poll_txq_tmout},
2598 {.name = "SEND_RECEIVE_UNALIGNED", .test_func = testapp_send_receive_unaligned},
2599 {.name = "ALIGNED_INV_DESC", .test_func = testapp_aligned_inv_desc},
2600 {.name = "ALIGNED_INV_DESC_2K_FRAME_SIZE", .test_func = testapp_aligned_inv_desc_2k_frame},
2601 {.name = "UNALIGNED_INV_DESC", .test_func = testapp_unaligned_inv_desc},
2602 {.name = "UNALIGNED_INV_DESC_4001_FRAME_SIZE",
2603 .test_func = testapp_unaligned_inv_desc_4001_frame},
2604 {.name = "UMEM_HEADROOM", .test_func = testapp_headroom},
2605 {.name = "TEARDOWN", .test_func = testapp_teardown},
2606 {.name = "BIDIRECTIONAL", .test_func = testapp_bidirectional},
2607 {.name = "STAT_RX_DROPPED", .test_func = testapp_stats_rx_dropped},
2608 {.name = "STAT_TX_INVALID", .test_func = testapp_stats_tx_invalid_descs},
2609 {.name = "STAT_RX_FULL", .test_func = testapp_stats_rx_full},
2610 {.name = "STAT_FILL_EMPTY", .test_func = testapp_stats_fill_empty},
2611 {.name = "XDP_PROG_CLEANUP", .test_func = testapp_xdp_prog_cleanup},
2612 {.name = "XDP_DROP_HALF", .test_func = testapp_xdp_drop},
2613 {.name = "XDP_SHARED_UMEM", .test_func = testapp_xdp_shared_umem},
2614 {.name = "XDP_METADATA_COPY", .test_func = testapp_xdp_metadata},
2615 {.name = "XDP_METADATA_COPY_MULTI_BUFF", .test_func = testapp_xdp_metadata_mb},
2616 {.name = "SEND_RECEIVE_9K_PACKETS", .test_func = testapp_send_receive_mb},
2617 {.name = "SEND_RECEIVE_UNALIGNED_9K_PACKETS",
2618 .test_func = testapp_send_receive_unaligned_mb},
2619 {.name = "ALIGNED_INV_DESC_MULTI_BUFF", .test_func = testapp_aligned_inv_desc_mb},
2620 {.name = "UNALIGNED_INV_DESC_MULTI_BUFF", .test_func = testapp_unaligned_inv_desc_mb},
2621 {.name = "TOO_MANY_FRAGS", .test_func = testapp_too_many_frags},
2622 {.name = "HW_SW_MIN_RING_SIZE", .test_func = testapp_hw_sw_min_ring_size},
2623 {.name = "HW_SW_MAX_RING_SIZE", .test_func = testapp_hw_sw_max_ring_size},
2626 static void print_tests(void)
2631 for (i = 0; i < ARRAY_SIZE(tests); i++)
2632 printf("%u: %s\n", i, tests[i].name);
2635 int main(int argc, char **argv)
2637 struct pkt_stream *rx_pkt_stream_default;
2638 struct pkt_stream *tx_pkt_stream_default;
2639 struct ifobject *ifobj_tx, *ifobj_rx;
2640 u32 i, j, failed_tests = 0, nb_tests;
2641 int modes = TEST_MODE_SKB + 1;
2642 struct test_spec test;
2646 /* Use libbpf 1.0 API mode */
2647 libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
2649 ifobj_tx = ifobject_create();
2651 exit_with_error(ENOMEM);
2652 ifobj_rx = ifobject_create();
2654 exit_with_error(ENOMEM);
2656 setlocale(LC_ALL, "");
2658 parse_command_line(ifobj_tx, ifobj_rx, argc, argv);
2660 if (opt_print_tests) {
2664 if (opt_run_test != RUN_ALL_TESTS && opt_run_test >= ARRAY_SIZE(tests)) {
2665 ksft_print_msg("Error: test %u does not exist.\n", opt_run_test);
2669 shared_netdev = (ifobj_tx->ifindex == ifobj_rx->ifindex);
2670 ifobj_tx->shared_umem = shared_netdev;
2671 ifobj_rx->shared_umem = shared_netdev;
2673 if (!validate_interface(ifobj_tx) || !validate_interface(ifobj_rx))
2676 if (is_xdp_supported(ifobj_tx->ifindex)) {
2678 if (ifobj_zc_avail(ifobj_tx))
2682 ret = get_hw_ring_size(ifobj_tx->ifname, &ifobj_tx->ring);
2684 ifobj_tx->hw_ring_size_supp = true;
2685 ifobj_tx->set_ring.default_tx = ifobj_tx->ring.tx_pending;
2686 ifobj_tx->set_ring.default_rx = ifobj_tx->ring.rx_pending;
2689 init_iface(ifobj_rx, worker_testapp_validate_rx);
2690 init_iface(ifobj_tx, worker_testapp_validate_tx);
2692 test_spec_init(&test, ifobj_tx, ifobj_rx, 0, &tests[0]);
2693 tx_pkt_stream_default = pkt_stream_generate(DEFAULT_PKT_CNT, MIN_PKT_SIZE);
2694 rx_pkt_stream_default = pkt_stream_generate(DEFAULT_PKT_CNT, MIN_PKT_SIZE);
2695 if (!tx_pkt_stream_default || !rx_pkt_stream_default)
2696 exit_with_error(ENOMEM);
2697 test.tx_pkt_stream_default = tx_pkt_stream_default;
2698 test.rx_pkt_stream_default = rx_pkt_stream_default;
2700 if (opt_run_test == RUN_ALL_TESTS)
2701 nb_tests = ARRAY_SIZE(tests);
2704 if (opt_mode == TEST_MODE_ALL) {
2705 ksft_set_plan(modes * nb_tests);
2707 if (opt_mode == TEST_MODE_DRV && modes <= TEST_MODE_DRV) {
2708 ksft_print_msg("Error: XDP_DRV mode not supported.\n");
2711 if (opt_mode == TEST_MODE_ZC && modes <= TEST_MODE_ZC) {
2712 ksft_print_msg("Error: zero-copy mode not supported.\n");
2716 ksft_set_plan(nb_tests);
2719 for (i = 0; i < modes; i++) {
2720 if (opt_mode != TEST_MODE_ALL && i != opt_mode)
2723 for (j = 0; j < ARRAY_SIZE(tests); j++) {
2724 if (opt_run_test != RUN_ALL_TESTS && j != opt_run_test)
2727 test_spec_init(&test, ifobj_tx, ifobj_rx, i, &tests[j]);
2728 run_pkt_test(&test);
2736 if (ifobj_tx->hw_ring_size_supp)
2737 hw_ring_size_reset(ifobj_tx);
2739 pkt_stream_delete(tx_pkt_stream_default);
2740 pkt_stream_delete(rx_pkt_stream_default);
2741 xsk_unload_xdp_programs(ifobj_tx);
2742 xsk_unload_xdp_programs(ifobj_rx);
2743 ifobject_delete(ifobj_tx);
2744 ifobject_delete(ifobj_rx);