1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2017 - 2018 Intel Corporation. */
8 #include <linux/if_link.h>
9 #include <linux/if_xdp.h>
10 #include <linux/if_ether.h>
12 #include <linux/limits.h>
13 #include <linux/udp.h>
14 #include <arpa/inet.h>
16 #include <net/ethernet.h>
25 #include <sys/capability.h>
27 #include <sys/resource.h>
28 #include <sys/socket.h>
29 #include <sys/types.h>
34 #include <bpf/libbpf.h>
51 #define NUM_FRAMES (4 * 1024)
52 #define MIN_PKT_SIZE 64
54 #define DEBUG_HEXDUMP 0
61 static unsigned long prev_time;
69 static enum benchmark_type opt_bench = BENCH_RXDROP;
70 static u32 opt_xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
71 static const char *opt_if = "";
72 static int opt_ifindex;
74 static unsigned long opt_duration;
75 static unsigned long start_time;
76 static bool benchmark_done;
77 static u32 opt_batch_size = 64;
78 static int opt_pkt_count;
79 static u16 opt_pkt_size = MIN_PKT_SIZE;
80 static u32 opt_pkt_fill_pattern = 0x12345678;
81 static bool opt_extra_stats;
82 static bool opt_quiet;
83 static bool opt_app_stats;
84 static const char *opt_irq_str = "";
86 static int irqs_at_init = -1;
88 static int opt_interval = 1;
89 static u32 opt_xdp_bind_flags = XDP_USE_NEED_WAKEUP;
90 static u32 opt_umem_flags;
91 static int opt_unaligned_chunks;
92 static int opt_mmap_flags;
93 static int opt_xsk_frame_size = XSK_UMEM__DEFAULT_FRAME_SIZE;
94 static int opt_timeout = 1000;
95 static bool opt_need_wakeup = true;
96 static u32 opt_num_xsks = 1;
98 static bool opt_busy_poll;
99 static bool opt_reduced_cap;
101 struct xsk_ring_stats {
102 unsigned long rx_npkts;
103 unsigned long tx_npkts;
104 unsigned long rx_dropped_npkts;
105 unsigned long rx_invalid_npkts;
106 unsigned long tx_invalid_npkts;
107 unsigned long rx_full_npkts;
108 unsigned long rx_fill_empty_npkts;
109 unsigned long tx_empty_npkts;
110 unsigned long prev_rx_npkts;
111 unsigned long prev_tx_npkts;
112 unsigned long prev_rx_dropped_npkts;
113 unsigned long prev_rx_invalid_npkts;
114 unsigned long prev_tx_invalid_npkts;
115 unsigned long prev_rx_full_npkts;
116 unsigned long prev_rx_fill_empty_npkts;
117 unsigned long prev_tx_empty_npkts;
120 struct xsk_driver_stats {
122 unsigned long prev_intrs;
125 struct xsk_app_stats {
126 unsigned long rx_empty_polls;
127 unsigned long fill_fail_polls;
128 unsigned long copy_tx_sendtos;
129 unsigned long tx_wakeup_sendtos;
130 unsigned long opt_polls;
131 unsigned long prev_rx_empty_polls;
132 unsigned long prev_fill_fail_polls;
133 unsigned long prev_copy_tx_sendtos;
134 unsigned long prev_tx_wakeup_sendtos;
135 unsigned long prev_opt_polls;
138 struct xsk_umem_info {
139 struct xsk_ring_prod fq;
140 struct xsk_ring_cons cq;
141 struct xsk_umem *umem;
145 struct xsk_socket_info {
146 struct xsk_ring_cons rx;
147 struct xsk_ring_prod tx;
148 struct xsk_umem_info *umem;
149 struct xsk_socket *xsk;
150 struct xsk_ring_stats ring_stats;
151 struct xsk_app_stats app_stats;
152 struct xsk_driver_stats drv_stats;
156 static int num_socks;
157 struct xsk_socket_info *xsks[MAX_SOCKS];
160 static unsigned long get_nsecs(void)
164 clock_gettime(CLOCK_MONOTONIC, &ts);
165 return ts.tv_sec * 1000000000UL + ts.tv_nsec;
168 static void print_benchmark(bool running)
170 const char *bench_str = "INVALID";
172 if (opt_bench == BENCH_RXDROP)
173 bench_str = "rxdrop";
174 else if (opt_bench == BENCH_TXONLY)
175 bench_str = "txonly";
176 else if (opt_bench == BENCH_L2FWD)
179 printf("%s:%d %s ", opt_if, opt_queue, bench_str);
180 if (opt_xdp_flags & XDP_FLAGS_SKB_MODE)
182 else if (opt_xdp_flags & XDP_FLAGS_DRV_MODE)
191 printf("running...");
196 static int xsk_get_xdp_stats(int fd, struct xsk_socket_info *xsk)
198 struct xdp_statistics stats;
202 optlen = sizeof(stats);
203 err = getsockopt(fd, SOL_XDP, XDP_STATISTICS, &stats, &optlen);
207 if (optlen == sizeof(struct xdp_statistics)) {
208 xsk->ring_stats.rx_dropped_npkts = stats.rx_dropped;
209 xsk->ring_stats.rx_invalid_npkts = stats.rx_invalid_descs;
210 xsk->ring_stats.tx_invalid_npkts = stats.tx_invalid_descs;
211 xsk->ring_stats.rx_full_npkts = stats.rx_ring_full;
212 xsk->ring_stats.rx_fill_empty_npkts = stats.rx_fill_ring_empty_descs;
213 xsk->ring_stats.tx_empty_npkts = stats.tx_ring_empty_descs;
220 static void dump_app_stats(long dt)
224 for (i = 0; i < num_socks && xsks[i]; i++) {
225 char *fmt = "%-18s %'-14.0f %'-14lu\n";
226 double rx_empty_polls_ps, fill_fail_polls_ps, copy_tx_sendtos_ps,
227 tx_wakeup_sendtos_ps, opt_polls_ps;
229 rx_empty_polls_ps = (xsks[i]->app_stats.rx_empty_polls -
230 xsks[i]->app_stats.prev_rx_empty_polls) * 1000000000. / dt;
231 fill_fail_polls_ps = (xsks[i]->app_stats.fill_fail_polls -
232 xsks[i]->app_stats.prev_fill_fail_polls) * 1000000000. / dt;
233 copy_tx_sendtos_ps = (xsks[i]->app_stats.copy_tx_sendtos -
234 xsks[i]->app_stats.prev_copy_tx_sendtos) * 1000000000. / dt;
235 tx_wakeup_sendtos_ps = (xsks[i]->app_stats.tx_wakeup_sendtos -
236 xsks[i]->app_stats.prev_tx_wakeup_sendtos)
238 opt_polls_ps = (xsks[i]->app_stats.opt_polls -
239 xsks[i]->app_stats.prev_opt_polls) * 1000000000. / dt;
241 printf("\n%-18s %-14s %-14s\n", "", "calls/s", "count");
242 printf(fmt, "rx empty polls", rx_empty_polls_ps, xsks[i]->app_stats.rx_empty_polls);
243 printf(fmt, "fill fail polls", fill_fail_polls_ps,
244 xsks[i]->app_stats.fill_fail_polls);
245 printf(fmt, "copy tx sendtos", copy_tx_sendtos_ps,
246 xsks[i]->app_stats.copy_tx_sendtos);
247 printf(fmt, "tx wakeup sendtos", tx_wakeup_sendtos_ps,
248 xsks[i]->app_stats.tx_wakeup_sendtos);
249 printf(fmt, "opt polls", opt_polls_ps, xsks[i]->app_stats.opt_polls);
251 xsks[i]->app_stats.prev_rx_empty_polls = xsks[i]->app_stats.rx_empty_polls;
252 xsks[i]->app_stats.prev_fill_fail_polls = xsks[i]->app_stats.fill_fail_polls;
253 xsks[i]->app_stats.prev_copy_tx_sendtos = xsks[i]->app_stats.copy_tx_sendtos;
254 xsks[i]->app_stats.prev_tx_wakeup_sendtos = xsks[i]->app_stats.tx_wakeup_sendtos;
255 xsks[i]->app_stats.prev_opt_polls = xsks[i]->app_stats.opt_polls;
259 static bool get_interrupt_number(void)
265 f_int_proc = fopen("/proc/interrupts", "r");
266 if (f_int_proc == NULL) {
267 printf("Failed to open /proc/interrupts.\n");
271 while (!feof(f_int_proc) && !found) {
272 /* Make sure to read a full line at a time */
273 if (fgets(line, sizeof(line), f_int_proc) == NULL ||
274 line[strlen(line) - 1] != '\n') {
275 printf("Error reading from interrupts file\n");
279 /* Extract interrupt number from line */
280 if (strstr(line, opt_irq_str) != NULL) {
292 static int get_irqs(void)
294 char count_path[PATH_MAX];
295 int total_intrs = -1;
299 snprintf(count_path, sizeof(count_path),
300 "/sys/kernel/irq/%i/per_cpu_count", irq_no);
301 f_count_proc = fopen(count_path, "r");
302 if (f_count_proc == NULL) {
303 printf("Failed to open %s\n", count_path);
307 if (fgets(line, sizeof(line), f_count_proc) == NULL ||
308 line[strlen(line) - 1] != '\n') {
309 printf("Error reading from %s\n", count_path);
311 static const char com[2] = ",";
315 token = strtok(line, com);
316 while (token != NULL) {
317 /* sum up interrupts across all cores */
318 total_intrs += atoi(token);
319 token = strtok(NULL, com);
323 fclose(f_count_proc);
328 static void dump_driver_stats(long dt)
332 for (i = 0; i < num_socks && xsks[i]; i++) {
333 char *fmt = "%-18s %'-14.0f %'-14lu\n";
335 int n_ints = get_irqs();
338 printf("error getting intr info for intr %i\n", irq_no);
341 xsks[i]->drv_stats.intrs = n_ints - irqs_at_init;
343 intrs_ps = (xsks[i]->drv_stats.intrs - xsks[i]->drv_stats.prev_intrs) *
346 printf("\n%-18s %-14s %-14s\n", "", "intrs/s", "count");
347 printf(fmt, "irqs", intrs_ps, xsks[i]->drv_stats.intrs);
349 xsks[i]->drv_stats.prev_intrs = xsks[i]->drv_stats.intrs;
353 static void dump_stats(void)
355 unsigned long now = get_nsecs();
356 long dt = now - prev_time;
361 for (i = 0; i < num_socks && xsks[i]; i++) {
362 char *fmt = "%-18s %'-14.0f %'-14lu\n";
363 double rx_pps, tx_pps, dropped_pps, rx_invalid_pps, full_pps, fill_empty_pps,
364 tx_invalid_pps, tx_empty_pps;
366 rx_pps = (xsks[i]->ring_stats.rx_npkts - xsks[i]->ring_stats.prev_rx_npkts) *
368 tx_pps = (xsks[i]->ring_stats.tx_npkts - xsks[i]->ring_stats.prev_tx_npkts) *
371 printf("\n sock%d@", i);
372 print_benchmark(false);
375 printf("%-18s %-14s %-14s %-14.2f\n", "", "pps", "pkts",
377 printf(fmt, "rx", rx_pps, xsks[i]->ring_stats.rx_npkts);
378 printf(fmt, "tx", tx_pps, xsks[i]->ring_stats.tx_npkts);
380 xsks[i]->ring_stats.prev_rx_npkts = xsks[i]->ring_stats.rx_npkts;
381 xsks[i]->ring_stats.prev_tx_npkts = xsks[i]->ring_stats.tx_npkts;
383 if (opt_extra_stats) {
384 if (!xsk_get_xdp_stats(xsk_socket__fd(xsks[i]->xsk), xsks[i])) {
385 dropped_pps = (xsks[i]->ring_stats.rx_dropped_npkts -
386 xsks[i]->ring_stats.prev_rx_dropped_npkts) *
388 rx_invalid_pps = (xsks[i]->ring_stats.rx_invalid_npkts -
389 xsks[i]->ring_stats.prev_rx_invalid_npkts) *
391 tx_invalid_pps = (xsks[i]->ring_stats.tx_invalid_npkts -
392 xsks[i]->ring_stats.prev_tx_invalid_npkts) *
394 full_pps = (xsks[i]->ring_stats.rx_full_npkts -
395 xsks[i]->ring_stats.prev_rx_full_npkts) *
397 fill_empty_pps = (xsks[i]->ring_stats.rx_fill_empty_npkts -
398 xsks[i]->ring_stats.prev_rx_fill_empty_npkts) *
400 tx_empty_pps = (xsks[i]->ring_stats.tx_empty_npkts -
401 xsks[i]->ring_stats.prev_tx_empty_npkts) *
404 printf(fmt, "rx dropped", dropped_pps,
405 xsks[i]->ring_stats.rx_dropped_npkts);
406 printf(fmt, "rx invalid", rx_invalid_pps,
407 xsks[i]->ring_stats.rx_invalid_npkts);
408 printf(fmt, "tx invalid", tx_invalid_pps,
409 xsks[i]->ring_stats.tx_invalid_npkts);
410 printf(fmt, "rx queue full", full_pps,
411 xsks[i]->ring_stats.rx_full_npkts);
412 printf(fmt, "fill ring empty", fill_empty_pps,
413 xsks[i]->ring_stats.rx_fill_empty_npkts);
414 printf(fmt, "tx ring empty", tx_empty_pps,
415 xsks[i]->ring_stats.tx_empty_npkts);
417 xsks[i]->ring_stats.prev_rx_dropped_npkts =
418 xsks[i]->ring_stats.rx_dropped_npkts;
419 xsks[i]->ring_stats.prev_rx_invalid_npkts =
420 xsks[i]->ring_stats.rx_invalid_npkts;
421 xsks[i]->ring_stats.prev_tx_invalid_npkts =
422 xsks[i]->ring_stats.tx_invalid_npkts;
423 xsks[i]->ring_stats.prev_rx_full_npkts =
424 xsks[i]->ring_stats.rx_full_npkts;
425 xsks[i]->ring_stats.prev_rx_fill_empty_npkts =
426 xsks[i]->ring_stats.rx_fill_empty_npkts;
427 xsks[i]->ring_stats.prev_tx_empty_npkts =
428 xsks[i]->ring_stats.tx_empty_npkts;
430 printf("%-15s\n", "Error retrieving extra stats");
438 dump_driver_stats(dt);
441 static bool is_benchmark_done(void)
443 if (opt_duration > 0) {
444 unsigned long dt = (get_nsecs() - start_time);
446 if (dt >= opt_duration)
447 benchmark_done = true;
449 return benchmark_done;
452 static void *poller(void *arg)
455 while (!is_benchmark_done()) {
463 static void remove_xdp_program(void)
465 u32 curr_prog_id = 0;
467 if (bpf_get_link_xdp_id(opt_ifindex, &curr_prog_id, opt_xdp_flags)) {
468 printf("bpf_get_link_xdp_id failed\n");
472 if (prog_id == curr_prog_id)
473 bpf_set_link_xdp_fd(opt_ifindex, -1, opt_xdp_flags);
474 else if (!curr_prog_id)
475 printf("couldn't find a prog id on a given interface\n");
477 printf("program on interface changed, not removing\n");
480 static void int_exit(int sig)
482 benchmark_done = true;
485 static void __exit_with_error(int error, const char *file, const char *func,
488 fprintf(stderr, "%s:%s:%i: errno: %d/\"%s\"\n", file, func,
489 line, error, strerror(error));
491 if (opt_num_xsks > 1)
492 remove_xdp_program();
496 #define exit_with_error(error) __exit_with_error(error, __FILE__, __func__, __LINE__)
498 static void xdpsock_cleanup(void)
500 struct xsk_umem *umem = xsks[0]->umem->umem;
501 int i, cmd = CLOSE_CONN;
504 for (i = 0; i < num_socks; i++)
505 xsk_socket__delete(xsks[i]->xsk);
506 (void)xsk_umem__delete(umem);
508 if (opt_reduced_cap) {
509 if (write(sock, &cmd, sizeof(int)) < 0)
510 exit_with_error(errno);
513 if (opt_num_xsks > 1)
514 remove_xdp_program();
517 static void swap_mac_addresses(void *data)
519 struct ether_header *eth = (struct ether_header *)data;
520 struct ether_addr *src_addr = (struct ether_addr *)ð->ether_shost;
521 struct ether_addr *dst_addr = (struct ether_addr *)ð->ether_dhost;
522 struct ether_addr tmp;
525 *src_addr = *dst_addr;
529 static void hex_dump(void *pkt, size_t length, u64 addr)
531 const unsigned char *address = (unsigned char *)pkt;
532 const unsigned char *line = address;
533 size_t line_size = 32;
541 sprintf(buf, "addr=%llu", addr);
542 printf("length = %zu\n", length);
543 printf("%s | ", buf);
544 while (length-- > 0) {
545 printf("%02X ", *address++);
546 if (!(++i % line_size) || (length == 0 && i % line_size)) {
548 while (i++ % line_size)
551 printf(" | "); /* right close */
552 while (line < address) {
554 printf("%c", (c < 33 || c == 255) ? 0x2E : c);
558 printf("%s | ", buf);
564 static void *memset32_htonl(void *dest, u32 val, u32 size)
566 u32 *ptr = (u32 *)dest;
571 for (i = 0; i < (size & (~0x3)); i += 4)
574 for (; i < size; i++)
575 ((char *)dest)[i] = ((char *)&val)[i & 3];
581 * This function code has been taken from
582 * Linux kernel lib/checksum.c
584 static inline unsigned short from32to16(unsigned int x)
586 /* add up 16-bit and 16-bit for 16+c bit */
587 x = (x & 0xffff) + (x >> 16);
589 x = (x & 0xffff) + (x >> 16);
594 * This function code has been taken from
595 * Linux kernel lib/checksum.c
597 static unsigned int do_csum(const unsigned char *buff, int len)
599 unsigned int result = 0;
604 odd = 1 & (unsigned long)buff;
606 #ifdef __LITTLE_ENDIAN
607 result += (*buff << 8);
615 if (2 & (unsigned long)buff) {
616 result += *(unsigned short *)buff;
621 const unsigned char *end = buff +
622 ((unsigned int)len & ~3);
623 unsigned int carry = 0;
626 unsigned int w = *(unsigned int *)buff;
631 carry = (w > result);
632 } while (buff < end);
634 result = (result & 0xffff) + (result >> 16);
637 result += *(unsigned short *)buff;
642 #ifdef __LITTLE_ENDIAN
645 result += (*buff << 8);
647 result = from32to16(result);
649 result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
655 * This is a version of ip_compute_csum() optimized for IP headers,
656 * which always checksum on 4 octet boundaries.
657 * This function code has been taken from
658 * Linux kernel lib/checksum.c
660 static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
662 return (__sum16)~do_csum(iph, ihl * 4);
666 * Fold a partial checksum
667 * This function code has been taken from
668 * Linux kernel include/asm-generic/checksum.h
670 static inline __sum16 csum_fold(__wsum csum)
674 sum = (sum & 0xffff) + (sum >> 16);
675 sum = (sum & 0xffff) + (sum >> 16);
676 return (__sum16)~sum;
680 * This function code has been taken from
681 * Linux kernel lib/checksum.c
683 static inline u32 from64to32(u64 x)
685 /* add up 32-bit and 32-bit for 32+c bit */
686 x = (x & 0xffffffff) + (x >> 32);
688 x = (x & 0xffffffff) + (x >> 32);
692 __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
693 __u32 len, __u8 proto, __wsum sum);
696 * This function code has been taken from
697 * Linux kernel lib/checksum.c
699 __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
700 __u32 len, __u8 proto, __wsum sum)
702 unsigned long long s = (u32)sum;
706 #ifdef __BIG_ENDIAN__
709 s += (proto + len) << 8;
711 return (__wsum)from64to32(s);
715 * This function has been taken from
716 * Linux kernel include/asm-generic/checksum.h
718 static inline __sum16
719 csum_tcpudp_magic(__be32 saddr, __be32 daddr, __u32 len,
720 __u8 proto, __wsum sum)
722 return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
725 static inline u16 udp_csum(u32 saddr, u32 daddr, u32 len,
726 u8 proto, u16 *udp_pkt)
731 /* udp hdr and data */
732 for (; cnt < len; cnt += 2)
733 csum += udp_pkt[cnt >> 1];
735 return csum_tcpudp_magic(saddr, daddr, len, proto, csum);
738 #define ETH_FCS_SIZE 4
740 #define PKT_HDR_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) + \
741 sizeof(struct udphdr))
743 #define PKT_SIZE (opt_pkt_size - ETH_FCS_SIZE)
744 #define IP_PKT_SIZE (PKT_SIZE - sizeof(struct ethhdr))
745 #define UDP_PKT_SIZE (IP_PKT_SIZE - sizeof(struct iphdr))
746 #define UDP_PKT_DATA_SIZE (UDP_PKT_SIZE - sizeof(struct udphdr))
748 static u8 pkt_data[XSK_UMEM__DEFAULT_FRAME_SIZE];
750 static void gen_eth_hdr_data(void)
752 struct udphdr *udp_hdr = (struct udphdr *)(pkt_data +
753 sizeof(struct ethhdr) +
754 sizeof(struct iphdr));
755 struct iphdr *ip_hdr = (struct iphdr *)(pkt_data +
756 sizeof(struct ethhdr));
757 struct ethhdr *eth_hdr = (struct ethhdr *)pkt_data;
759 /* ethernet header */
760 memcpy(eth_hdr->h_dest, "\x3c\xfd\xfe\x9e\x7f\x71", ETH_ALEN);
761 memcpy(eth_hdr->h_source, "\xec\xb1\xd7\x98\x3a\xc0", ETH_ALEN);
762 eth_hdr->h_proto = htons(ETH_P_IP);
765 ip_hdr->version = IPVERSION;
766 ip_hdr->ihl = 0x5; /* 20 byte header */
768 ip_hdr->tot_len = htons(IP_PKT_SIZE);
770 ip_hdr->frag_off = 0;
771 ip_hdr->ttl = IPDEFTTL;
772 ip_hdr->protocol = IPPROTO_UDP;
773 ip_hdr->saddr = htonl(0x0a0a0a10);
774 ip_hdr->daddr = htonl(0x0a0a0a20);
776 /* IP header checksum */
778 ip_hdr->check = ip_fast_csum((const void *)ip_hdr, ip_hdr->ihl);
781 udp_hdr->source = htons(0x1000);
782 udp_hdr->dest = htons(0x1000);
783 udp_hdr->len = htons(UDP_PKT_SIZE);
786 memset32_htonl(pkt_data + PKT_HDR_SIZE, opt_pkt_fill_pattern,
789 /* UDP header checksum */
791 udp_hdr->check = udp_csum(ip_hdr->saddr, ip_hdr->daddr, UDP_PKT_SIZE,
792 IPPROTO_UDP, (u16 *)udp_hdr);
795 static void gen_eth_frame(struct xsk_umem_info *umem, u64 addr)
797 memcpy(xsk_umem__get_data(umem->buffer, addr), pkt_data,
801 static struct xsk_umem_info *xsk_configure_umem(void *buffer, u64 size)
803 struct xsk_umem_info *umem;
804 struct xsk_umem_config cfg = {
805 /* We recommend that you set the fill ring size >= HW RX ring size +
806 * AF_XDP RX ring size. Make sure you fill up the fill ring
807 * with buffers at regular intervals, and you will with this setting
808 * avoid allocation failures in the driver. These are usually quite
809 * expensive since drivers have not been written to assume that
810 * allocation failures are common. For regular sockets, kernel
811 * allocated memory is used that only runs out in OOM situations
812 * that should be rare.
814 .fill_size = XSK_RING_PROD__DEFAULT_NUM_DESCS * 2,
815 .comp_size = XSK_RING_CONS__DEFAULT_NUM_DESCS,
816 .frame_size = opt_xsk_frame_size,
817 .frame_headroom = XSK_UMEM__DEFAULT_FRAME_HEADROOM,
818 .flags = opt_umem_flags
822 umem = calloc(1, sizeof(*umem));
824 exit_with_error(errno);
826 ret = xsk_umem__create(&umem->umem, buffer, size, &umem->fq, &umem->cq,
829 exit_with_error(-ret);
831 umem->buffer = buffer;
835 static void xsk_populate_fill_ring(struct xsk_umem_info *umem)
840 ret = xsk_ring_prod__reserve(&umem->fq,
841 XSK_RING_PROD__DEFAULT_NUM_DESCS * 2, &idx);
842 if (ret != XSK_RING_PROD__DEFAULT_NUM_DESCS * 2)
843 exit_with_error(-ret);
844 for (i = 0; i < XSK_RING_PROD__DEFAULT_NUM_DESCS * 2; i++)
845 *xsk_ring_prod__fill_addr(&umem->fq, idx++) =
846 i * opt_xsk_frame_size;
847 xsk_ring_prod__submit(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS * 2);
850 static struct xsk_socket_info *xsk_configure_socket(struct xsk_umem_info *umem,
853 struct xsk_socket_config cfg;
854 struct xsk_socket_info *xsk;
855 struct xsk_ring_cons *rxr;
856 struct xsk_ring_prod *txr;
859 xsk = calloc(1, sizeof(*xsk));
861 exit_with_error(errno);
864 cfg.rx_size = XSK_RING_CONS__DEFAULT_NUM_DESCS;
865 cfg.tx_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
866 if (opt_num_xsks > 1 || opt_reduced_cap)
867 cfg.libbpf_flags = XSK_LIBBPF_FLAGS__INHIBIT_PROG_LOAD;
869 cfg.libbpf_flags = 0;
870 cfg.xdp_flags = opt_xdp_flags;
871 cfg.bind_flags = opt_xdp_bind_flags;
873 rxr = rx ? &xsk->rx : NULL;
874 txr = tx ? &xsk->tx : NULL;
875 ret = xsk_socket__create(&xsk->xsk, opt_if, opt_queue, umem->umem,
878 exit_with_error(-ret);
880 ret = bpf_get_link_xdp_id(opt_ifindex, &prog_id, opt_xdp_flags);
882 exit_with_error(-ret);
884 xsk->app_stats.rx_empty_polls = 0;
885 xsk->app_stats.fill_fail_polls = 0;
886 xsk->app_stats.copy_tx_sendtos = 0;
887 xsk->app_stats.tx_wakeup_sendtos = 0;
888 xsk->app_stats.opt_polls = 0;
889 xsk->app_stats.prev_rx_empty_polls = 0;
890 xsk->app_stats.prev_fill_fail_polls = 0;
891 xsk->app_stats.prev_copy_tx_sendtos = 0;
892 xsk->app_stats.prev_tx_wakeup_sendtos = 0;
893 xsk->app_stats.prev_opt_polls = 0;
898 static struct option long_options[] = {
899 {"rxdrop", no_argument, 0, 'r'},
900 {"txonly", no_argument, 0, 't'},
901 {"l2fwd", no_argument, 0, 'l'},
902 {"interface", required_argument, 0, 'i'},
903 {"queue", required_argument, 0, 'q'},
904 {"poll", no_argument, 0, 'p'},
905 {"xdp-skb", no_argument, 0, 'S'},
906 {"xdp-native", no_argument, 0, 'N'},
907 {"interval", required_argument, 0, 'n'},
908 {"zero-copy", no_argument, 0, 'z'},
909 {"copy", no_argument, 0, 'c'},
910 {"frame-size", required_argument, 0, 'f'},
911 {"no-need-wakeup", no_argument, 0, 'm'},
912 {"unaligned", no_argument, 0, 'u'},
913 {"shared-umem", no_argument, 0, 'M'},
914 {"force", no_argument, 0, 'F'},
915 {"duration", required_argument, 0, 'd'},
916 {"batch-size", required_argument, 0, 'b'},
917 {"tx-pkt-count", required_argument, 0, 'C'},
918 {"tx-pkt-size", required_argument, 0, 's'},
919 {"tx-pkt-pattern", required_argument, 0, 'P'},
920 {"extra-stats", no_argument, 0, 'x'},
921 {"quiet", no_argument, 0, 'Q'},
922 {"app-stats", no_argument, 0, 'a'},
923 {"irq-string", no_argument, 0, 'I'},
924 {"busy-poll", no_argument, 0, 'B'},
925 {"reduce-cap", no_argument, 0, 'R'},
929 static void usage(const char *prog)
932 " Usage: %s [OPTIONS]\n"
934 " -r, --rxdrop Discard all incoming packets (default)\n"
935 " -t, --txonly Only send packets\n"
936 " -l, --l2fwd MAC swap L2 forwarding\n"
937 " -i, --interface=n Run on interface n\n"
938 " -q, --queue=n Use queue n (default 0)\n"
939 " -p, --poll Use poll syscall\n"
940 " -S, --xdp-skb=n Use XDP skb-mod\n"
941 " -N, --xdp-native=n Enforce XDP native mode\n"
942 " -n, --interval=n Specify statistics update interval (default 1 sec).\n"
943 " -z, --zero-copy Force zero-copy mode.\n"
944 " -c, --copy Force copy mode.\n"
945 " -m, --no-need-wakeup Turn off use of driver need wakeup flag.\n"
946 " -f, --frame-size=n Set the frame size (must be a power of two in aligned mode, default is %d).\n"
947 " -u, --unaligned Enable unaligned chunk placement\n"
948 " -M, --shared-umem Enable XDP_SHARED_UMEM (cannot be used with -R)\n"
949 " -F, --force Force loading the XDP prog\n"
950 " -d, --duration=n Duration in secs to run command.\n"
951 " Default: forever.\n"
952 " -b, --batch-size=n Batch size for sending or receiving\n"
953 " packets. Default: %d\n"
954 " -C, --tx-pkt-count=n Number of packets to send.\n"
955 " Default: Continuous packets.\n"
956 " -s, --tx-pkt-size=n Transmit packet size.\n"
957 " (Default: %d bytes)\n"
958 " Min size: %d, Max size %d.\n"
959 " -P, --tx-pkt-pattern=nPacket fill pattern. Default: 0x%x\n"
960 " -x, --extra-stats Display extra statistics.\n"
961 " -Q, --quiet Do not display any stats.\n"
962 " -a, --app-stats Display application (syscall) statistics.\n"
963 " -I, --irq-string Display driver interrupt statistics for interface associated with irq-string.\n"
964 " -B, --busy-poll Busy poll.\n"
965 " -R, --reduce-cap Use reduced capabilities (cannot be used with -M)\n"
967 fprintf(stderr, str, prog, XSK_UMEM__DEFAULT_FRAME_SIZE,
968 opt_batch_size, MIN_PKT_SIZE, MIN_PKT_SIZE,
969 XSK_UMEM__DEFAULT_FRAME_SIZE, opt_pkt_fill_pattern);
974 static void parse_command_line(int argc, char **argv)
981 c = getopt_long(argc, argv, "Frtli:q:pSNn:czf:muMd:b:C:s:P:xQaI:BR",
982 long_options, &option_index);
988 opt_bench = BENCH_RXDROP;
991 opt_bench = BENCH_TXONLY;
994 opt_bench = BENCH_L2FWD;
1000 opt_queue = atoi(optarg);
1006 opt_xdp_flags |= XDP_FLAGS_SKB_MODE;
1007 opt_xdp_bind_flags |= XDP_COPY;
1010 /* default, set below */
1013 opt_interval = atoi(optarg);
1016 opt_xdp_bind_flags |= XDP_ZEROCOPY;
1019 opt_xdp_bind_flags |= XDP_COPY;
1022 opt_umem_flags |= XDP_UMEM_UNALIGNED_CHUNK_FLAG;
1023 opt_unaligned_chunks = 1;
1024 opt_mmap_flags = MAP_HUGETLB;
1027 opt_xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
1030 opt_xsk_frame_size = atoi(optarg);
1033 opt_need_wakeup = false;
1034 opt_xdp_bind_flags &= ~XDP_USE_NEED_WAKEUP;
1037 opt_num_xsks = MAX_SOCKS;
1040 opt_duration = atoi(optarg);
1041 opt_duration *= 1000000000;
1044 opt_batch_size = atoi(optarg);
1047 opt_pkt_count = atoi(optarg);
1050 opt_pkt_size = atoi(optarg);
1051 if (opt_pkt_size > (XSK_UMEM__DEFAULT_FRAME_SIZE) ||
1052 opt_pkt_size < MIN_PKT_SIZE) {
1054 "ERROR: Invalid frame size %d\n",
1056 usage(basename(argv[0]));
1060 opt_pkt_fill_pattern = strtol(optarg, NULL, 16);
1063 opt_extra_stats = 1;
1072 opt_irq_str = optarg;
1073 if (get_interrupt_number())
1074 irqs_at_init = get_irqs();
1075 if (irqs_at_init < 0) {
1076 fprintf(stderr, "ERROR: Failed to get irqs for %s\n", opt_irq_str);
1077 usage(basename(argv[0]));
1084 opt_reduced_cap = true;
1087 usage(basename(argv[0]));
1091 if (!(opt_xdp_flags & XDP_FLAGS_SKB_MODE))
1092 opt_xdp_flags |= XDP_FLAGS_DRV_MODE;
1094 opt_ifindex = if_nametoindex(opt_if);
1096 fprintf(stderr, "ERROR: interface \"%s\" does not exist\n",
1098 usage(basename(argv[0]));
1101 if ((opt_xsk_frame_size & (opt_xsk_frame_size - 1)) &&
1102 !opt_unaligned_chunks) {
1103 fprintf(stderr, "--frame-size=%d is not a power of two\n",
1104 opt_xsk_frame_size);
1105 usage(basename(argv[0]));
1108 if (opt_reduced_cap && opt_num_xsks > 1) {
1109 fprintf(stderr, "ERROR: -M and -R cannot be used together\n");
1110 usage(basename(argv[0]));
1114 static void kick_tx(struct xsk_socket_info *xsk)
1118 ret = sendto(xsk_socket__fd(xsk->xsk), NULL, 0, MSG_DONTWAIT, NULL, 0);
1119 if (ret >= 0 || errno == ENOBUFS || errno == EAGAIN ||
1120 errno == EBUSY || errno == ENETDOWN)
1122 exit_with_error(errno);
1125 static inline void complete_tx_l2fwd(struct xsk_socket_info *xsk)
1127 struct xsk_umem_info *umem = xsk->umem;
1128 u32 idx_cq = 0, idx_fq = 0;
1132 if (!xsk->outstanding_tx)
1135 /* In copy mode, Tx is driven by a syscall so we need to use e.g. sendto() to
1136 * really send the packets. In zero-copy mode we do not have to do this, since Tx
1137 * is driven by the NAPI loop. So as an optimization, we do not have to call
1138 * sendto() all the time in zero-copy mode for l2fwd.
1140 if (opt_xdp_bind_flags & XDP_COPY) {
1141 xsk->app_stats.copy_tx_sendtos++;
1145 ndescs = (xsk->outstanding_tx > opt_batch_size) ? opt_batch_size :
1146 xsk->outstanding_tx;
1148 /* re-add completed Tx buffers */
1149 rcvd = xsk_ring_cons__peek(&umem->cq, ndescs, &idx_cq);
1154 ret = xsk_ring_prod__reserve(&umem->fq, rcvd, &idx_fq);
1155 while (ret != rcvd) {
1157 exit_with_error(-ret);
1158 if (opt_busy_poll || xsk_ring_prod__needs_wakeup(&umem->fq)) {
1159 xsk->app_stats.fill_fail_polls++;
1160 recvfrom(xsk_socket__fd(xsk->xsk), NULL, 0, MSG_DONTWAIT, NULL,
1163 ret = xsk_ring_prod__reserve(&umem->fq, rcvd, &idx_fq);
1166 for (i = 0; i < rcvd; i++)
1167 *xsk_ring_prod__fill_addr(&umem->fq, idx_fq++) =
1168 *xsk_ring_cons__comp_addr(&umem->cq, idx_cq++);
1170 xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
1171 xsk_ring_cons__release(&xsk->umem->cq, rcvd);
1172 xsk->outstanding_tx -= rcvd;
1176 static inline void complete_tx_only(struct xsk_socket_info *xsk,
1182 if (!xsk->outstanding_tx)
1185 if (!opt_need_wakeup || xsk_ring_prod__needs_wakeup(&xsk->tx)) {
1186 xsk->app_stats.tx_wakeup_sendtos++;
1190 rcvd = xsk_ring_cons__peek(&xsk->umem->cq, batch_size, &idx);
1192 xsk_ring_cons__release(&xsk->umem->cq, rcvd);
1193 xsk->outstanding_tx -= rcvd;
1197 static void rx_drop(struct xsk_socket_info *xsk)
1199 unsigned int rcvd, i;
1200 u32 idx_rx = 0, idx_fq = 0;
1203 rcvd = xsk_ring_cons__peek(&xsk->rx, opt_batch_size, &idx_rx);
1205 if (opt_busy_poll || xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) {
1206 xsk->app_stats.rx_empty_polls++;
1207 recvfrom(xsk_socket__fd(xsk->xsk), NULL, 0, MSG_DONTWAIT, NULL, NULL);
1212 ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
1213 while (ret != rcvd) {
1215 exit_with_error(-ret);
1216 if (opt_busy_poll || xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) {
1217 xsk->app_stats.fill_fail_polls++;
1218 recvfrom(xsk_socket__fd(xsk->xsk), NULL, 0, MSG_DONTWAIT, NULL, NULL);
1220 ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
1223 for (i = 0; i < rcvd; i++) {
1224 u64 addr = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx)->addr;
1225 u32 len = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx++)->len;
1226 u64 orig = xsk_umem__extract_addr(addr);
1228 addr = xsk_umem__add_offset_to_addr(addr);
1229 char *pkt = xsk_umem__get_data(xsk->umem->buffer, addr);
1231 hex_dump(pkt, len, addr);
1232 *xsk_ring_prod__fill_addr(&xsk->umem->fq, idx_fq++) = orig;
1235 xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
1236 xsk_ring_cons__release(&xsk->rx, rcvd);
1237 xsk->ring_stats.rx_npkts += rcvd;
1240 static void rx_drop_all(void)
1242 struct pollfd fds[MAX_SOCKS] = {};
1245 for (i = 0; i < num_socks; i++) {
1246 fds[i].fd = xsk_socket__fd(xsks[i]->xsk);
1247 fds[i].events = POLLIN;
1252 for (i = 0; i < num_socks; i++)
1253 xsks[i]->app_stats.opt_polls++;
1254 ret = poll(fds, num_socks, opt_timeout);
1259 for (i = 0; i < num_socks; i++)
1267 static void tx_only(struct xsk_socket_info *xsk, u32 *frame_nb, int batch_size)
1272 while (xsk_ring_prod__reserve(&xsk->tx, batch_size, &idx) <
1274 complete_tx_only(xsk, batch_size);
1279 for (i = 0; i < batch_size; i++) {
1280 struct xdp_desc *tx_desc = xsk_ring_prod__tx_desc(&xsk->tx,
1282 tx_desc->addr = (*frame_nb + i) * opt_xsk_frame_size;
1283 tx_desc->len = PKT_SIZE;
1286 xsk_ring_prod__submit(&xsk->tx, batch_size);
1287 xsk->ring_stats.tx_npkts += batch_size;
1288 xsk->outstanding_tx += batch_size;
1289 *frame_nb += batch_size;
1290 *frame_nb %= NUM_FRAMES;
1291 complete_tx_only(xsk, batch_size);
1294 static inline int get_batch_size(int pkt_cnt)
1297 return opt_batch_size;
1299 if (pkt_cnt + opt_batch_size <= opt_pkt_count)
1300 return opt_batch_size;
1302 return opt_pkt_count - pkt_cnt;
1305 static void complete_tx_only_all(void)
1312 for (i = 0; i < num_socks; i++) {
1313 if (xsks[i]->outstanding_tx) {
1314 complete_tx_only(xsks[i], opt_batch_size);
1315 pending = !!xsks[i]->outstanding_tx;
1321 static void tx_only_all(void)
1323 struct pollfd fds[MAX_SOCKS] = {};
1324 u32 frame_nb[MAX_SOCKS] = {};
1328 for (i = 0; i < num_socks; i++) {
1329 fds[0].fd = xsk_socket__fd(xsks[i]->xsk);
1330 fds[0].events = POLLOUT;
1333 while ((opt_pkt_count && pkt_cnt < opt_pkt_count) || !opt_pkt_count) {
1334 int batch_size = get_batch_size(pkt_cnt);
1337 for (i = 0; i < num_socks; i++)
1338 xsks[i]->app_stats.opt_polls++;
1339 ret = poll(fds, num_socks, opt_timeout);
1343 if (!(fds[0].revents & POLLOUT))
1347 for (i = 0; i < num_socks; i++)
1348 tx_only(xsks[i], &frame_nb[i], batch_size);
1350 pkt_cnt += batch_size;
1357 complete_tx_only_all();
1360 static void l2fwd(struct xsk_socket_info *xsk)
1362 unsigned int rcvd, i;
1363 u32 idx_rx = 0, idx_tx = 0;
1366 complete_tx_l2fwd(xsk);
1368 rcvd = xsk_ring_cons__peek(&xsk->rx, opt_batch_size, &idx_rx);
1370 if (opt_busy_poll || xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) {
1371 xsk->app_stats.rx_empty_polls++;
1372 recvfrom(xsk_socket__fd(xsk->xsk), NULL, 0, MSG_DONTWAIT, NULL, NULL);
1376 xsk->ring_stats.rx_npkts += rcvd;
1378 ret = xsk_ring_prod__reserve(&xsk->tx, rcvd, &idx_tx);
1379 while (ret != rcvd) {
1381 exit_with_error(-ret);
1382 complete_tx_l2fwd(xsk);
1383 if (opt_busy_poll || xsk_ring_prod__needs_wakeup(&xsk->tx)) {
1384 xsk->app_stats.tx_wakeup_sendtos++;
1387 ret = xsk_ring_prod__reserve(&xsk->tx, rcvd, &idx_tx);
1390 for (i = 0; i < rcvd; i++) {
1391 u64 addr = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx)->addr;
1392 u32 len = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx++)->len;
1395 addr = xsk_umem__add_offset_to_addr(addr);
1396 char *pkt = xsk_umem__get_data(xsk->umem->buffer, addr);
1398 swap_mac_addresses(pkt);
1400 hex_dump(pkt, len, addr);
1401 xsk_ring_prod__tx_desc(&xsk->tx, idx_tx)->addr = orig;
1402 xsk_ring_prod__tx_desc(&xsk->tx, idx_tx++)->len = len;
1405 xsk_ring_prod__submit(&xsk->tx, rcvd);
1406 xsk_ring_cons__release(&xsk->rx, rcvd);
1408 xsk->ring_stats.tx_npkts += rcvd;
1409 xsk->outstanding_tx += rcvd;
1412 static void l2fwd_all(void)
1414 struct pollfd fds[MAX_SOCKS] = {};
1419 for (i = 0; i < num_socks; i++) {
1420 fds[i].fd = xsk_socket__fd(xsks[i]->xsk);
1421 fds[i].events = POLLOUT | POLLIN;
1422 xsks[i]->app_stats.opt_polls++;
1424 ret = poll(fds, num_socks, opt_timeout);
1429 for (i = 0; i < num_socks; i++)
1437 static void load_xdp_program(char **argv, struct bpf_object **obj)
1439 struct bpf_prog_load_attr prog_load_attr = {
1440 .prog_type = BPF_PROG_TYPE_XDP,
1442 char xdp_filename[256];
1445 snprintf(xdp_filename, sizeof(xdp_filename), "%s_kern.o", argv[0]);
1446 prog_load_attr.file = xdp_filename;
1448 if (bpf_prog_load_xattr(&prog_load_attr, obj, &prog_fd))
1451 fprintf(stderr, "ERROR: no program found: %s\n",
1456 if (bpf_set_link_xdp_fd(opt_ifindex, prog_fd, opt_xdp_flags) < 0) {
1457 fprintf(stderr, "ERROR: link set xdp fd failed\n");
1462 static void enter_xsks_into_map(struct bpf_object *obj)
1464 struct bpf_map *map;
1467 map = bpf_object__find_map_by_name(obj, "xsks_map");
1468 xsks_map = bpf_map__fd(map);
1470 fprintf(stderr, "ERROR: no xsks map found: %s\n",
1471 strerror(xsks_map));
1475 for (i = 0; i < num_socks; i++) {
1476 int fd = xsk_socket__fd(xsks[i]->xsk);
1480 ret = bpf_map_update_elem(xsks_map, &key, &fd, 0);
1482 fprintf(stderr, "ERROR: bpf_map_update_elem %d\n", i);
1488 static void apply_setsockopt(struct xsk_socket_info *xsk)
1496 if (setsockopt(xsk_socket__fd(xsk->xsk), SOL_SOCKET, SO_PREFER_BUSY_POLL,
1497 (void *)&sock_opt, sizeof(sock_opt)) < 0)
1498 exit_with_error(errno);
1501 if (setsockopt(xsk_socket__fd(xsk->xsk), SOL_SOCKET, SO_BUSY_POLL,
1502 (void *)&sock_opt, sizeof(sock_opt)) < 0)
1503 exit_with_error(errno);
1505 sock_opt = opt_batch_size;
1506 if (setsockopt(xsk_socket__fd(xsk->xsk), SOL_SOCKET, SO_BUSY_POLL_BUDGET,
1507 (void *)&sock_opt, sizeof(sock_opt)) < 0)
1508 exit_with_error(errno);
1511 static int recv_xsks_map_fd_from_ctrl_node(int sock, int *_fd)
1513 char cms[CMSG_SPACE(sizeof(int))];
1514 struct cmsghdr *cmsg;
1520 iov.iov_base = &value;
1521 iov.iov_len = sizeof(int);
1524 msg.msg_namelen = 0;
1528 msg.msg_control = (caddr_t)cms;
1529 msg.msg_controllen = sizeof(cms);
1531 len = recvmsg(sock, &msg, 0);
1534 fprintf(stderr, "Recvmsg failed length incorrect.\n");
1539 fprintf(stderr, "Recvmsg failed no data\n");
1543 cmsg = CMSG_FIRSTHDR(&msg);
1544 *_fd = *(int *)CMSG_DATA(cmsg);
1550 recv_xsks_map_fd(int *xsks_map_fd)
1552 struct sockaddr_un server;
1555 sock = socket(AF_UNIX, SOCK_STREAM, 0);
1557 fprintf(stderr, "Error opening socket stream: %s", strerror(errno));
1561 server.sun_family = AF_UNIX;
1562 strcpy(server.sun_path, SOCKET_NAME);
1564 if (connect(sock, (struct sockaddr *)&server, sizeof(struct sockaddr_un)) < 0) {
1566 fprintf(stderr, "Error connecting stream socket: %s", strerror(errno));
1570 err = recv_xsks_map_fd_from_ctrl_node(sock, xsks_map_fd);
1572 fprintf(stderr, "Error %d receiving fd\n", err);
1578 int main(int argc, char **argv)
1580 struct __user_cap_header_struct hdr = { _LINUX_CAPABILITY_VERSION_3, 0 };
1581 struct __user_cap_data_struct data[2] = { { 0 } };
1582 struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
1583 bool rx = false, tx = false;
1584 struct xsk_umem_info *umem;
1585 struct bpf_object *obj;
1586 int xsks_map_fd = 0;
1591 parse_command_line(argc, argv);
1593 if (opt_reduced_cap) {
1594 if (capget(&hdr, data) < 0)
1595 fprintf(stderr, "Error getting capabilities\n");
1597 data->effective &= CAP_TO_MASK(CAP_NET_RAW);
1598 data->permitted &= CAP_TO_MASK(CAP_NET_RAW);
1600 if (capset(&hdr, data) < 0)
1601 fprintf(stderr, "Setting capabilities failed\n");
1603 if (capget(&hdr, data) < 0) {
1604 fprintf(stderr, "Error getting capabilities\n");
1606 fprintf(stderr, "Capabilities EFF %x Caps INH %x Caps Per %x\n",
1607 data[0].effective, data[0].inheritable, data[0].permitted);
1608 fprintf(stderr, "Capabilities EFF %x Caps INH %x Caps Per %x\n",
1609 data[1].effective, data[1].inheritable, data[1].permitted);
1612 if (setrlimit(RLIMIT_MEMLOCK, &r)) {
1613 fprintf(stderr, "ERROR: setrlimit(RLIMIT_MEMLOCK) \"%s\"\n",
1618 if (opt_num_xsks > 1)
1619 load_xdp_program(argv, &obj);
1622 /* Reserve memory for the umem. Use hugepages if unaligned chunk mode */
1623 bufs = mmap(NULL, NUM_FRAMES * opt_xsk_frame_size,
1624 PROT_READ | PROT_WRITE,
1625 MAP_PRIVATE | MAP_ANONYMOUS | opt_mmap_flags, -1, 0);
1626 if (bufs == MAP_FAILED) {
1627 printf("ERROR: mmap failed\n");
1631 /* Create sockets... */
1632 umem = xsk_configure_umem(bufs, NUM_FRAMES * opt_xsk_frame_size);
1633 if (opt_bench == BENCH_RXDROP || opt_bench == BENCH_L2FWD) {
1635 xsk_populate_fill_ring(umem);
1637 if (opt_bench == BENCH_L2FWD || opt_bench == BENCH_TXONLY)
1639 for (i = 0; i < opt_num_xsks; i++)
1640 xsks[num_socks++] = xsk_configure_socket(umem, rx, tx);
1642 for (i = 0; i < opt_num_xsks; i++)
1643 apply_setsockopt(xsks[i]);
1645 if (opt_bench == BENCH_TXONLY) {
1648 for (i = 0; i < NUM_FRAMES; i++)
1649 gen_eth_frame(umem, i * opt_xsk_frame_size);
1652 if (opt_num_xsks > 1 && opt_bench != BENCH_TXONLY)
1653 enter_xsks_into_map(obj);
1655 if (opt_reduced_cap) {
1656 ret = recv_xsks_map_fd(&xsks_map_fd);
1658 fprintf(stderr, "Error %d receiving xsks_map_fd\n", ret);
1659 exit_with_error(ret);
1662 ret = xsk_socket__update_xskmap(xsks[0]->xsk, xsks_map_fd);
1664 fprintf(stderr, "Update of BPF map failed(%d)\n", ret);
1665 exit_with_error(ret);
1670 signal(SIGINT, int_exit);
1671 signal(SIGTERM, int_exit);
1672 signal(SIGABRT, int_exit);
1674 setlocale(LC_ALL, "");
1677 ret = pthread_create(&pt, NULL, poller, NULL);
1679 exit_with_error(ret);
1682 prev_time = get_nsecs();
1683 start_time = prev_time;
1685 if (opt_bench == BENCH_RXDROP)
1687 else if (opt_bench == BENCH_TXONLY)
1692 benchmark_done = true;
1695 pthread_join(pt, NULL);
1699 munmap(bufs, NUM_FRAMES * opt_xsk_frame_size);