ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/samples/bpf/xdpsock_user.c b/marvell/linux/samples/bpf/xdpsock_user.c
new file mode 100644
index 0000000..3b604c1
--- /dev/null
+++ b/marvell/linux/samples/bpf/xdpsock_user.c
@@ -0,0 +1,789 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2017 - 2018 Intel Corporation. */
+
+#include <asm/barrier.h>
+#include <errno.h>
+#include <getopt.h>
+#include <libgen.h>
+#include <linux/bpf.h>
+#include <linux/compiler.h>
+#include <linux/if_link.h>
+#include <linux/if_xdp.h>
+#include <linux/if_ether.h>
+#include <locale.h>
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <poll.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/resource.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "libbpf.h"
+#include "xsk.h"
+#include <bpf/bpf.h>
+
+#ifndef SOL_XDP
+#define SOL_XDP 283
+#endif
+
+#ifndef AF_XDP
+#define AF_XDP 44
+#endif
+
+#ifndef PF_XDP
+#define PF_XDP AF_XDP
+#endif
+
+#define NUM_FRAMES (4 * 1024)
+#define BATCH_SIZE 64
+
+#define DEBUG_HEXDUMP 0
+#define MAX_SOCKS 8
+
+typedef __u64 u64;
+typedef __u32 u32;
+
+static unsigned long prev_time;
+
+enum benchmark_type {
+ BENCH_RXDROP = 0,
+ BENCH_TXONLY = 1,
+ BENCH_L2FWD = 2,
+};
+
+static enum benchmark_type opt_bench = BENCH_RXDROP;
+static u32 opt_xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
+static const char *opt_if = "";
+static int opt_ifindex;
+static int opt_queue;
+static int opt_poll;
+static int opt_interval = 1;
+static u32 opt_xdp_bind_flags = XDP_USE_NEED_WAKEUP;
+static u32 opt_umem_flags;
+static int opt_unaligned_chunks;
+static int opt_mmap_flags;
+static u32 opt_xdp_bind_flags;
+static int opt_xsk_frame_size = XSK_UMEM__DEFAULT_FRAME_SIZE;
+static int opt_timeout = 1000;
+static bool opt_need_wakeup = true;
+static __u32 prog_id;
+
+struct xsk_umem_info {
+ struct xsk_ring_prod fq;
+ struct xsk_ring_cons cq;
+ struct xsk_umem *umem;
+ void *buffer;
+};
+
+struct xsk_socket_info {
+ struct xsk_ring_cons rx;
+ struct xsk_ring_prod tx;
+ struct xsk_umem_info *umem;
+ struct xsk_socket *xsk;
+ unsigned long rx_npkts;
+ unsigned long tx_npkts;
+ unsigned long prev_rx_npkts;
+ unsigned long prev_tx_npkts;
+ u32 outstanding_tx;
+};
+
+static int num_socks;
+struct xsk_socket_info *xsks[MAX_SOCKS];
+
+static unsigned long get_nsecs(void)
+{
+ struct timespec ts;
+
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ return ts.tv_sec * 1000000000UL + ts.tv_nsec;
+}
+
+static void print_benchmark(bool running)
+{
+ const char *bench_str = "INVALID";
+
+ if (opt_bench == BENCH_RXDROP)
+ bench_str = "rxdrop";
+ else if (opt_bench == BENCH_TXONLY)
+ bench_str = "txonly";
+ else if (opt_bench == BENCH_L2FWD)
+ bench_str = "l2fwd";
+
+ printf("%s:%d %s ", opt_if, opt_queue, bench_str);
+ if (opt_xdp_flags & XDP_FLAGS_SKB_MODE)
+ printf("xdp-skb ");
+ else if (opt_xdp_flags & XDP_FLAGS_DRV_MODE)
+ printf("xdp-drv ");
+ else
+ printf(" ");
+
+ if (opt_poll)
+ printf("poll() ");
+
+ if (running) {
+ printf("running...");
+ fflush(stdout);
+ }
+}
+
+static void dump_stats(void)
+{
+ unsigned long now = get_nsecs();
+ long dt = now - prev_time;
+ int i;
+
+ prev_time = now;
+
+ for (i = 0; i < num_socks && xsks[i]; i++) {
+ char *fmt = "%-15s %'-11.0f %'-11lu\n";
+ double rx_pps, tx_pps;
+
+ rx_pps = (xsks[i]->rx_npkts - xsks[i]->prev_rx_npkts) *
+ 1000000000. / dt;
+ tx_pps = (xsks[i]->tx_npkts - xsks[i]->prev_tx_npkts) *
+ 1000000000. / dt;
+
+ printf("\n sock%d@", i);
+ print_benchmark(false);
+ printf("\n");
+
+ printf("%-15s %-11s %-11s %-11.2f\n", "", "pps", "pkts",
+ dt / 1000000000.);
+ printf(fmt, "rx", rx_pps, xsks[i]->rx_npkts);
+ printf(fmt, "tx", tx_pps, xsks[i]->tx_npkts);
+
+ xsks[i]->prev_rx_npkts = xsks[i]->rx_npkts;
+ xsks[i]->prev_tx_npkts = xsks[i]->tx_npkts;
+ }
+}
+
+static void *poller(void *arg)
+{
+ (void)arg;
+ for (;;) {
+ sleep(opt_interval);
+ dump_stats();
+ }
+
+ return NULL;
+}
+
+static void remove_xdp_program(void)
+{
+ __u32 curr_prog_id = 0;
+
+ if (bpf_get_link_xdp_id(opt_ifindex, &curr_prog_id, opt_xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(EXIT_FAILURE);
+ }
+ if (prog_id == curr_prog_id)
+ bpf_set_link_xdp_fd(opt_ifindex, -1, opt_xdp_flags);
+ else if (!curr_prog_id)
+ printf("couldn't find a prog id on a given interface\n");
+ else
+ printf("program on interface changed, not removing\n");
+}
+
+static void int_exit(int sig)
+{
+ struct xsk_umem *umem = xsks[0]->umem->umem;
+
+ (void)sig;
+
+ dump_stats();
+ xsk_socket__delete(xsks[0]->xsk);
+ (void)xsk_umem__delete(umem);
+ remove_xdp_program();
+
+ exit(EXIT_SUCCESS);
+}
+
+static void __exit_with_error(int error, const char *file, const char *func,
+ int line)
+{
+ fprintf(stderr, "%s:%s:%i: errno: %d/\"%s\"\n", file, func,
+ line, error, strerror(error));
+ dump_stats();
+ remove_xdp_program();
+ exit(EXIT_FAILURE);
+}
+
+#define exit_with_error(error) __exit_with_error(error, __FILE__, __func__, \
+ __LINE__)
+
+static const char pkt_data[] =
+ "\x3c\xfd\xfe\x9e\x7f\x71\xec\xb1\xd7\x98\x3a\xc0\x08\x00\x45\x00"
+ "\x00\x2e\x00\x00\x00\x00\x40\x11\x88\x97\x05\x08\x07\x08\xc8\x14"
+ "\x1e\x04\x10\x92\x10\x92\x00\x1a\x6d\xa3\x34\x33\x1f\x69\x40\x6b"
+ "\x54\x59\xb6\x14\x2d\x11\x44\xbf\xaf\xd9\xbe\xaa";
+
+static void swap_mac_addresses(void *data)
+{
+ struct ether_header *eth = (struct ether_header *)data;
+ struct ether_addr *src_addr = (struct ether_addr *)ð->ether_shost;
+ struct ether_addr *dst_addr = (struct ether_addr *)ð->ether_dhost;
+ struct ether_addr tmp;
+
+ tmp = *src_addr;
+ *src_addr = *dst_addr;
+ *dst_addr = tmp;
+}
+
+static void hex_dump(void *pkt, size_t length, u64 addr)
+{
+ const unsigned char *address = (unsigned char *)pkt;
+ const unsigned char *line = address;
+ size_t line_size = 32;
+ unsigned char c;
+ char buf[32];
+ int i = 0;
+
+ if (!DEBUG_HEXDUMP)
+ return;
+
+ sprintf(buf, "addr=%llu", addr);
+ printf("length = %zu\n", length);
+ printf("%s | ", buf);
+ while (length-- > 0) {
+ printf("%02X ", *address++);
+ if (!(++i % line_size) || (length == 0 && i % line_size)) {
+ if (length == 0) {
+ while (i++ % line_size)
+ printf("__ ");
+ }
+ printf(" | "); /* right close */
+ while (line < address) {
+ c = *line++;
+ printf("%c", (c < 33 || c == 255) ? 0x2E : c);
+ }
+ printf("\n");
+ if (length > 0)
+ printf("%s | ", buf);
+ }
+ }
+ printf("\n");
+}
+
+static size_t gen_eth_frame(struct xsk_umem_info *umem, u64 addr)
+{
+ memcpy(xsk_umem__get_data(umem->buffer, addr), pkt_data,
+ sizeof(pkt_data) - 1);
+ return sizeof(pkt_data) - 1;
+}
+
+static struct xsk_umem_info *xsk_configure_umem(void *buffer, u64 size)
+{
+ struct xsk_umem_info *umem;
+ struct xsk_umem_config cfg = {
+ .fill_size = XSK_RING_PROD__DEFAULT_NUM_DESCS,
+ .comp_size = XSK_RING_CONS__DEFAULT_NUM_DESCS,
+ .frame_size = opt_xsk_frame_size,
+ .frame_headroom = XSK_UMEM__DEFAULT_FRAME_HEADROOM,
+ .flags = opt_umem_flags
+ };
+
+ int ret;
+
+ umem = calloc(1, sizeof(*umem));
+ if (!umem)
+ exit_with_error(errno);
+
+ ret = xsk_umem__create(&umem->umem, buffer, size, &umem->fq, &umem->cq,
+ &cfg);
+
+ if (ret)
+ exit_with_error(-ret);
+
+ umem->buffer = buffer;
+ return umem;
+}
+
+static struct xsk_socket_info *xsk_configure_socket(struct xsk_umem_info *umem)
+{
+ struct xsk_socket_config cfg;
+ struct xsk_socket_info *xsk;
+ int ret;
+ u32 idx;
+ int i;
+
+ xsk = calloc(1, sizeof(*xsk));
+ if (!xsk)
+ exit_with_error(errno);
+
+ xsk->umem = umem;
+ cfg.rx_size = XSK_RING_CONS__DEFAULT_NUM_DESCS;
+ cfg.tx_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
+ cfg.libbpf_flags = 0;
+ cfg.xdp_flags = opt_xdp_flags;
+ cfg.bind_flags = opt_xdp_bind_flags;
+ ret = xsk_socket__create(&xsk->xsk, opt_if, opt_queue, umem->umem,
+ &xsk->rx, &xsk->tx, &cfg);
+ if (ret)
+ exit_with_error(-ret);
+
+ ret = bpf_get_link_xdp_id(opt_ifindex, &prog_id, opt_xdp_flags);
+ if (ret)
+ exit_with_error(-ret);
+
+ ret = xsk_ring_prod__reserve(&xsk->umem->fq,
+ XSK_RING_PROD__DEFAULT_NUM_DESCS,
+ &idx);
+ if (ret != XSK_RING_PROD__DEFAULT_NUM_DESCS)
+ exit_with_error(-ret);
+ for (i = 0; i < XSK_RING_PROD__DEFAULT_NUM_DESCS; i++)
+ *xsk_ring_prod__fill_addr(&xsk->umem->fq, idx++) =
+ i * opt_xsk_frame_size;
+ xsk_ring_prod__submit(&xsk->umem->fq,
+ XSK_RING_PROD__DEFAULT_NUM_DESCS);
+
+ return xsk;
+}
+
+static struct option long_options[] = {
+ {"rxdrop", no_argument, 0, 'r'},
+ {"txonly", no_argument, 0, 't'},
+ {"l2fwd", no_argument, 0, 'l'},
+ {"interface", required_argument, 0, 'i'},
+ {"queue", required_argument, 0, 'q'},
+ {"poll", no_argument, 0, 'p'},
+ {"xdp-skb", no_argument, 0, 'S'},
+ {"xdp-native", no_argument, 0, 'N'},
+ {"interval", required_argument, 0, 'n'},
+ {"zero-copy", no_argument, 0, 'z'},
+ {"copy", no_argument, 0, 'c'},
+ {"frame-size", required_argument, 0, 'f'},
+ {"no-need-wakeup", no_argument, 0, 'm'},
+ {"unaligned", no_argument, 0, 'u'},
+ {0, 0, 0, 0}
+};
+
+static void usage(const char *prog)
+{
+ const char *str =
+ " Usage: %s [OPTIONS]\n"
+ " Options:\n"
+ " -r, --rxdrop Discard all incoming packets (default)\n"
+ " -t, --txonly Only send packets\n"
+ " -l, --l2fwd MAC swap L2 forwarding\n"
+ " -i, --interface=n Run on interface n\n"
+ " -q, --queue=n Use queue n (default 0)\n"
+ " -p, --poll Use poll syscall\n"
+ " -S, --xdp-skb=n Use XDP skb-mod\n"
+ " -N, --xdp-native=n Enfore XDP native mode\n"
+ " -n, --interval=n Specify statistics update interval (default 1 sec).\n"
+ " -z, --zero-copy Force zero-copy mode.\n"
+ " -c, --copy Force copy mode.\n"
+ " -f, --frame-size=n Set the frame size (must be a power of two, default is %d).\n"
+ " -m, --no-need-wakeup Turn off use of driver need wakeup flag.\n"
+ " -f, --frame-size=n Set the frame size (must be a power of two in aligned mode, default is %d).\n"
+ " -u, --unaligned Enable unaligned chunk placement\n"
+ "\n";
+ fprintf(stderr, str, prog, XSK_UMEM__DEFAULT_FRAME_SIZE);
+ exit(EXIT_FAILURE);
+}
+
+static void parse_command_line(int argc, char **argv)
+{
+ int option_index, c;
+
+ opterr = 0;
+
+ for (;;) {
+ c = getopt_long(argc, argv, "Frtli:q:psSNn:czf:mu",
+ long_options, &option_index);
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'r':
+ opt_bench = BENCH_RXDROP;
+ break;
+ case 't':
+ opt_bench = BENCH_TXONLY;
+ break;
+ case 'l':
+ opt_bench = BENCH_L2FWD;
+ break;
+ case 'i':
+ opt_if = optarg;
+ break;
+ case 'q':
+ opt_queue = atoi(optarg);
+ break;
+ case 'p':
+ opt_poll = 1;
+ break;
+ case 'S':
+ opt_xdp_flags |= XDP_FLAGS_SKB_MODE;
+ opt_xdp_bind_flags |= XDP_COPY;
+ break;
+ case 'N':
+ opt_xdp_flags |= XDP_FLAGS_DRV_MODE;
+ break;
+ case 'n':
+ opt_interval = atoi(optarg);
+ break;
+ case 'z':
+ opt_xdp_bind_flags |= XDP_ZEROCOPY;
+ break;
+ case 'c':
+ opt_xdp_bind_flags |= XDP_COPY;
+ break;
+ case 'u':
+ opt_umem_flags |= XDP_UMEM_UNALIGNED_CHUNK_FLAG;
+ opt_unaligned_chunks = 1;
+ opt_mmap_flags = MAP_HUGETLB;
+ break;
+ case 'F':
+ opt_xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
+ case 'f':
+ opt_xsk_frame_size = atoi(optarg);
+ case 'm':
+ opt_need_wakeup = false;
+ opt_xdp_bind_flags &= ~XDP_USE_NEED_WAKEUP;
+ break;
+
+ default:
+ usage(basename(argv[0]));
+ }
+ }
+
+ opt_ifindex = if_nametoindex(opt_if);
+ if (!opt_ifindex) {
+ fprintf(stderr, "ERROR: interface \"%s\" does not exist\n",
+ opt_if);
+ usage(basename(argv[0]));
+ }
+
+ if ((opt_xsk_frame_size & (opt_xsk_frame_size - 1)) &&
+ !opt_unaligned_chunks) {
+ fprintf(stderr, "--frame-size=%d is not a power of two\n",
+ opt_xsk_frame_size);
+ usage(basename(argv[0]));
+ }
+}
+
+static void kick_tx(struct xsk_socket_info *xsk)
+{
+ int ret;
+
+ ret = sendto(xsk_socket__fd(xsk->xsk), NULL, 0, MSG_DONTWAIT, NULL, 0);
+ if (ret >= 0 || errno == ENOBUFS || errno == EAGAIN || errno == EBUSY)
+ return;
+ exit_with_error(errno);
+}
+
+static inline void complete_tx_l2fwd(struct xsk_socket_info *xsk,
+ struct pollfd *fds)
+{
+ struct xsk_umem_info *umem = xsk->umem;
+ u32 idx_cq = 0, idx_fq = 0;
+ unsigned int rcvd;
+ size_t ndescs;
+
+ if (!xsk->outstanding_tx)
+ return;
+
+ if (!opt_need_wakeup || xsk_ring_prod__needs_wakeup(&xsk->tx))
+ kick_tx(xsk);
+
+ ndescs = (xsk->outstanding_tx > BATCH_SIZE) ? BATCH_SIZE :
+ xsk->outstanding_tx;
+
+ /* re-add completed Tx buffers */
+ rcvd = xsk_ring_cons__peek(&umem->cq, ndescs, &idx_cq);
+ if (rcvd > 0) {
+ unsigned int i;
+ int ret;
+
+ ret = xsk_ring_prod__reserve(&umem->fq, rcvd, &idx_fq);
+ while (ret != rcvd) {
+ if (ret < 0)
+ exit_with_error(-ret);
+ if (xsk_ring_prod__needs_wakeup(&umem->fq))
+ ret = poll(fds, num_socks, opt_timeout);
+ ret = xsk_ring_prod__reserve(&umem->fq, rcvd, &idx_fq);
+ }
+
+ for (i = 0; i < rcvd; i++)
+ *xsk_ring_prod__fill_addr(&umem->fq, idx_fq++) =
+ *xsk_ring_cons__comp_addr(&umem->cq, idx_cq++);
+
+ xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
+ xsk_ring_cons__release(&xsk->umem->cq, rcvd);
+ xsk->outstanding_tx -= rcvd;
+ xsk->tx_npkts += rcvd;
+ }
+}
+
+static inline void complete_tx_only(struct xsk_socket_info *xsk)
+{
+ unsigned int rcvd;
+ u32 idx;
+
+ if (!xsk->outstanding_tx)
+ return;
+
+ if (!opt_need_wakeup || xsk_ring_prod__needs_wakeup(&xsk->tx))
+ kick_tx(xsk);
+
+ rcvd = xsk_ring_cons__peek(&xsk->umem->cq, BATCH_SIZE, &idx);
+ if (rcvd > 0) {
+ xsk_ring_cons__release(&xsk->umem->cq, rcvd);
+ xsk->outstanding_tx -= rcvd;
+ xsk->tx_npkts += rcvd;
+ }
+}
+
+static void rx_drop(struct xsk_socket_info *xsk, struct pollfd *fds)
+{
+ unsigned int rcvd, i;
+ u32 idx_rx = 0, idx_fq = 0;
+ int ret;
+
+ rcvd = xsk_ring_cons__peek(&xsk->rx, BATCH_SIZE, &idx_rx);
+ if (!rcvd) {
+ if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq))
+ ret = poll(fds, num_socks, opt_timeout);
+ return;
+ }
+
+ ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
+ while (ret != rcvd) {
+ if (ret < 0)
+ exit_with_error(-ret);
+ if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq))
+ ret = poll(fds, num_socks, opt_timeout);
+ ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
+ }
+
+ for (i = 0; i < rcvd; i++) {
+ u64 addr = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx)->addr;
+ u32 len = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx++)->len;
+ u64 orig = xsk_umem__extract_addr(addr);
+
+ addr = xsk_umem__add_offset_to_addr(addr);
+ char *pkt = xsk_umem__get_data(xsk->umem->buffer, addr);
+
+ hex_dump(pkt, len, addr);
+ *xsk_ring_prod__fill_addr(&xsk->umem->fq, idx_fq++) = orig;
+ }
+
+ xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
+ xsk_ring_cons__release(&xsk->rx, rcvd);
+ xsk->rx_npkts += rcvd;
+}
+
+static void rx_drop_all(void)
+{
+ struct pollfd fds[MAX_SOCKS + 1];
+ int i, ret;
+
+ memset(fds, 0, sizeof(fds));
+
+ for (i = 0; i < num_socks; i++) {
+ fds[i].fd = xsk_socket__fd(xsks[i]->xsk);
+ fds[i].events = POLLIN;
+ }
+
+ for (;;) {
+ if (opt_poll) {
+ ret = poll(fds, num_socks, opt_timeout);
+ if (ret <= 0)
+ continue;
+ }
+
+ for (i = 0; i < num_socks; i++)
+ rx_drop(xsks[i], fds);
+ }
+}
+
+static void tx_only(struct xsk_socket_info *xsk, u32 frame_nb)
+{
+ u32 idx;
+
+ if (xsk_ring_prod__reserve(&xsk->tx, BATCH_SIZE, &idx) == BATCH_SIZE) {
+ unsigned int i;
+
+ for (i = 0; i < BATCH_SIZE; i++) {
+ xsk_ring_prod__tx_desc(&xsk->tx, idx + i)->addr =
+ (frame_nb + i) << XSK_UMEM__DEFAULT_FRAME_SHIFT;
+ xsk_ring_prod__tx_desc(&xsk->tx, idx + i)->len =
+ sizeof(pkt_data) - 1;
+ }
+
+ xsk_ring_prod__submit(&xsk->tx, BATCH_SIZE);
+ xsk->outstanding_tx += BATCH_SIZE;
+ frame_nb += BATCH_SIZE;
+ frame_nb %= NUM_FRAMES;
+ }
+
+ complete_tx_only(xsk);
+}
+
+static void tx_only_all(void)
+{
+ struct pollfd fds[MAX_SOCKS];
+ u32 frame_nb[MAX_SOCKS] = {};
+ int i, ret;
+
+ memset(fds, 0, sizeof(fds));
+ for (i = 0; i < num_socks; i++) {
+ fds[0].fd = xsk_socket__fd(xsks[i]->xsk);
+ fds[0].events = POLLOUT;
+ }
+
+ for (;;) {
+ if (opt_poll) {
+ ret = poll(fds, num_socks, opt_timeout);
+ if (ret <= 0)
+ continue;
+
+ if (!(fds[0].revents & POLLOUT))
+ continue;
+ }
+
+ for (i = 0; i < num_socks; i++)
+ tx_only(xsks[i], frame_nb[i]);
+ }
+}
+
+static void l2fwd(struct xsk_socket_info *xsk, struct pollfd *fds)
+{
+ unsigned int rcvd, i;
+ u32 idx_rx = 0, idx_tx = 0;
+ int ret;
+
+ complete_tx_l2fwd(xsk, fds);
+
+ rcvd = xsk_ring_cons__peek(&xsk->rx, BATCH_SIZE, &idx_rx);
+ if (!rcvd) {
+ if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq))
+ ret = poll(fds, num_socks, opt_timeout);
+ return;
+ }
+
+ ret = xsk_ring_prod__reserve(&xsk->tx, rcvd, &idx_tx);
+ while (ret != rcvd) {
+ if (ret < 0)
+ exit_with_error(-ret);
+ complete_tx_l2fwd(xsk, fds);
+ if (xsk_ring_prod__needs_wakeup(&xsk->tx))
+ kick_tx(xsk);
+ ret = xsk_ring_prod__reserve(&xsk->tx, rcvd, &idx_tx);
+ }
+
+ for (i = 0; i < rcvd; i++) {
+ u64 addr = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx)->addr;
+ u32 len = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx++)->len;
+ u64 orig = addr;
+
+ addr = xsk_umem__add_offset_to_addr(addr);
+ char *pkt = xsk_umem__get_data(xsk->umem->buffer, addr);
+
+ swap_mac_addresses(pkt);
+
+ hex_dump(pkt, len, addr);
+ xsk_ring_prod__tx_desc(&xsk->tx, idx_tx)->addr = orig;
+ xsk_ring_prod__tx_desc(&xsk->tx, idx_tx++)->len = len;
+ }
+
+ xsk_ring_prod__submit(&xsk->tx, rcvd);
+ xsk_ring_cons__release(&xsk->rx, rcvd);
+
+ xsk->rx_npkts += rcvd;
+ xsk->outstanding_tx += rcvd;
+}
+
+static void l2fwd_all(void)
+{
+ struct pollfd fds[MAX_SOCKS];
+ int i, ret;
+
+ memset(fds, 0, sizeof(fds));
+
+ for (i = 0; i < num_socks; i++) {
+ fds[i].fd = xsk_socket__fd(xsks[i]->xsk);
+ fds[i].events = POLLOUT | POLLIN;
+ }
+
+ for (;;) {
+ if (opt_poll) {
+ ret = poll(fds, num_socks, opt_timeout);
+ if (ret <= 0)
+ continue;
+ }
+
+ for (i = 0; i < num_socks; i++)
+ l2fwd(xsks[i], fds);
+ }
+}
+
+int main(int argc, char **argv)
+{
+ struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
+ struct xsk_umem_info *umem;
+ pthread_t pt;
+ void *bufs;
+ int ret;
+
+ parse_command_line(argc, argv);
+
+ if (setrlimit(RLIMIT_MEMLOCK, &r)) {
+ fprintf(stderr, "ERROR: setrlimit(RLIMIT_MEMLOCK) \"%s\"\n",
+ strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ /* Reserve memory for the umem. Use hugepages if unaligned chunk mode */
+ bufs = mmap(NULL, NUM_FRAMES * opt_xsk_frame_size,
+ PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANONYMOUS | opt_mmap_flags, -1, 0);
+ if (bufs == MAP_FAILED) {
+ printf("ERROR: mmap failed\n");
+ exit(EXIT_FAILURE);
+ }
+ /* Create sockets... */
+ umem = xsk_configure_umem(bufs, NUM_FRAMES * opt_xsk_frame_size);
+ xsks[num_socks++] = xsk_configure_socket(umem);
+
+ if (opt_bench == BENCH_TXONLY) {
+ int i;
+
+ for (i = 0; i < NUM_FRAMES; i++)
+ (void)gen_eth_frame(umem, i * opt_xsk_frame_size);
+ }
+
+ signal(SIGINT, int_exit);
+ signal(SIGTERM, int_exit);
+ signal(SIGABRT, int_exit);
+
+ setlocale(LC_ALL, "");
+
+ ret = pthread_create(&pt, NULL, poller, NULL);
+ if (ret)
+ exit_with_error(ret);
+
+ prev_time = get_nsecs();
+
+ if (opt_bench == BENCH_RXDROP)
+ rx_drop_all();
+ else if (opt_bench == BENCH_TXONLY)
+ tx_only_all();
+ else
+ l2fwd_all();
+
+ munmap(bufs, NUM_FRAMES * opt_xsk_frame_size);
+
+ return 0;
+}