static void int_exit(int sig) { bpf_set_link_xdp_fd(ifindex_in, -1, xdp_flags); if (ifindex_out_xdp_dummy_attached) bpf_set_link_xdp_fd(ifindex_out, -1, xdp_flags); exit(0); }
static void int_exit(int sig) { (void)sig; dump_stats(); bpf_set_link_xdp_fd(opt_ifindex, -1, opt_xdp_flags); exit(EXIT_SUCCESS); }
static void int_exit(int sig) { fprintf(stderr, "Interrupted: Removing XDP program on ifindex:%d device:%s\n", ifindex, ifname); if (ifindex > -1) bpf_set_link_xdp_fd(ifindex, -1, xdp_flags); exit(EXIT_OK); }
static void int_exit(int sig) { if (ifindex > -1) bpf_set_link_xdp_fd(ifindex, -1, xdp_flags); exit(0); }
int main(int argc, char **argv) { unsigned char opt_flags[256] = {}; unsigned int kill_after_s = 0; const char *optstr = "i:a:p:s:d:m:T:P:SNh"; int min_port = 0, max_port = 0; struct iptnl_info tnl = {}; struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; struct vip vip = {}; char filename[256]; int opt; int i; tnl.family = AF_UNSPEC; vip.protocol = IPPROTO_TCP; for (i = 0; i < strlen(optstr); i++) if (optstr[i] != 'h' && 'a' <= optstr[i] && optstr[i] <= 'z') opt_flags[(unsigned char)optstr[i]] = 1; while ((opt = getopt(argc, argv, optstr)) != -1) { unsigned short family; unsigned int *v6; switch (opt) { case 'i': ifindex = atoi(optarg); break; case 'a': vip.family = parse_ipstr(optarg, vip.daddr.v6); if (vip.family == AF_UNSPEC) return 1; break; case 'p': if (parse_ports(optarg, &min_port, &max_port)) return 1; break; case 'P': vip.protocol = atoi(optarg); break; case 's': case 'd': if (opt == 's') v6 = tnl.saddr.v6; else v6 = tnl.daddr.v6; family = parse_ipstr(optarg, v6); if (family == AF_UNSPEC) return 1; if (tnl.family == AF_UNSPEC) { tnl.family = family; } else if (tnl.family != family) { fprintf(stderr, "The IP version of the src and dst addresses used in the IP encapsulation does not match\n"); return 1; } break; case 'm': if (!ether_aton_r(optarg, (struct ether_addr *)tnl.dmac)) { fprintf(stderr, "Invalid mac address:%s\n", optarg); return 1; } break; case 'T': kill_after_s = atoi(optarg); break; case 'S': xdp_flags |= XDP_FLAGS_SKB_MODE; break; case 'N': xdp_flags |= XDP_FLAGS_DRV_MODE; break; default: usage(argv[0]); return 1; } opt_flags[opt] = 0; } for (i = 0; i < strlen(optstr); i++) { if (opt_flags[(unsigned int)optstr[i]]) { fprintf(stderr, "Missing argument -%c\n", optstr[i]); usage(argv[0]); return 1; } } if (setrlimit(RLIMIT_MEMLOCK, &r)) { perror("setrlimit(RLIMIT_MEMLOCK, RLIM_INFINITY)"); return 1; } snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); return 1; } if (!prog_fd[0]) { printf("load_bpf_file: %s\n", strerror(errno)); return 1; } signal(SIGINT, int_exit); signal(SIGTERM, int_exit); while (min_port <= max_port) { vip.dport = htons(min_port++); if (bpf_map_update_elem(map_fd[1], &vip, &tnl, BPF_NOEXIST)) { perror("bpf_map_update_elem(&vip2tnl)"); return 1; } } if (bpf_set_link_xdp_fd(ifindex, prog_fd[0], xdp_flags) < 0) { printf("link set xdp fd failed\n"); return 1; } poll_stats(kill_after_s); bpf_set_link_xdp_fd(ifindex, -1, xdp_flags); return 0; }
int main(int argc, char **argv) { const char *optstr = "SN"; char filename[256]; int ret, opt, key = 0; while ((opt = getopt(argc, argv, optstr)) != -1) { switch (opt) { case 'S': xdp_flags |= XDP_FLAGS_SKB_MODE; break; case 'N': xdp_flags |= XDP_FLAGS_DRV_MODE; break; default: usage(basename(argv[0])); return 1; } } if (optind == argc) { printf("usage: %s IFINDEX_IN IFINDEX_OUT\n", argv[0]); return 1; } ifindex_in = strtoul(argv[optind], NULL, 0); ifindex_out = strtoul(argv[optind + 1], NULL, 0); printf("input: %d output: %d\n", ifindex_in, ifindex_out); snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); return 1; } if (!prog_fd[0]) { printf("load_bpf_file: %s\n", strerror(errno)); return 1; } if (bpf_set_link_xdp_fd(ifindex_in, prog_fd[0], xdp_flags) < 0) { printf("ERROR: link set xdp fd failed on %d\n", ifindex_in); return 1; } /* Loading dummy XDP prog on out-device */ if (bpf_set_link_xdp_fd(ifindex_out, prog_fd[1], (xdp_flags | XDP_FLAGS_UPDATE_IF_NOEXIST)) < 0) { printf("WARN: link set xdp fd failed on %d\n", ifindex_out); ifindex_out_xdp_dummy_attached = false; } signal(SIGINT, int_exit); signal(SIGTERM, int_exit); /* bpf redirect port */ ret = bpf_map_update_elem(map_fd[0], &key, &ifindex_out, 0); if (ret) { perror("bpf_update_elem"); goto out; } poll_stats(2, ifindex_out); out: return 0; }
int main(int argc, char **argv) { struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; struct bpf_prog_load_attr prog_load_attr = { .prog_type = BPF_PROG_TYPE_XDP, }; int prog_fd, qidconf_map, xsks_map; struct bpf_object *obj; char xdp_filename[256]; struct bpf_map *map; int i, ret, key = 0; pthread_t pt; parse_command_line(argc, argv); if (setrlimit(RLIMIT_MEMLOCK, &r)) { fprintf(stderr, "ERROR: setrlimit(RLIMIT_MEMLOCK) \"%s\"\n", strerror(errno)); exit(EXIT_FAILURE); } snprintf(xdp_filename, sizeof(xdp_filename), "%s_kern.o", argv[0]); prog_load_attr.file = xdp_filename; if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd)) exit(EXIT_FAILURE); if (prog_fd < 0) { fprintf(stderr, "ERROR: no program found: %s\n", strerror(prog_fd)); exit(EXIT_FAILURE); } map = bpf_object__find_map_by_name(obj, "qidconf_map"); qidconf_map = bpf_map__fd(map); if (qidconf_map < 0) { fprintf(stderr, "ERROR: no qidconf map found: %s\n", strerror(qidconf_map)); exit(EXIT_FAILURE); } map = bpf_object__find_map_by_name(obj, "xsks_map"); xsks_map = bpf_map__fd(map); if (xsks_map < 0) { fprintf(stderr, "ERROR: no xsks map found: %s\n", strerror(xsks_map)); exit(EXIT_FAILURE); } if (bpf_set_link_xdp_fd(opt_ifindex, prog_fd, opt_xdp_flags) < 0) { fprintf(stderr, "ERROR: link set xdp fd failed\n"); exit(EXIT_FAILURE); } ret = bpf_map_update_elem(qidconf_map, &key, &opt_queue, 0); if (ret) { fprintf(stderr, "ERROR: bpf_map_update_elem qidconf\n"); exit(EXIT_FAILURE); } /* Create sockets... */ xsks[num_socks++] = xsk_configure(NULL); #if RR_LB for (i = 0; i < MAX_SOCKS - 1; i++) xsks[num_socks++] = xsk_configure(xsks[0]->umem); #endif /* ...and insert them into the map. */ for (i = 0; i < num_socks; i++) { key = i; ret = bpf_map_update_elem(xsks_map, &key, &xsks[i]->sfd, 0); if (ret) { fprintf(stderr, "ERROR: bpf_map_update_elem %d\n", i); exit(EXIT_FAILURE); } } signal(SIGINT, int_exit); signal(SIGTERM, int_exit); signal(SIGABRT, int_exit); setlocale(LC_ALL, ""); ret = pthread_create(&pt, NULL, poller, NULL); lassert(ret == 0); prev_time = get_nsecs(); if (opt_bench == BENCH_RXDROP) rx_drop_all(); else if (opt_bench == BENCH_TXONLY) tx_only(xsks[0]); else l2fwd(xsks[0]); return 0; }