diff options
Diffstat (limited to 'samples/bpf/xdp_redirect_map_user.c')
| -rw-r--r-- | samples/bpf/xdp_redirect_map_user.c | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/samples/bpf/xdp_redirect_map_user.c b/samples/bpf/xdp_redirect_map_user.c deleted file mode 100644 index c889a1394dc1..000000000000 --- a/samples/bpf/xdp_redirect_map_user.c +++ /dev/null @@ -1,228 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* Copyright (c) 2017 Covalent IO, Inc. http://covalent.io - */ -static const char *__doc__ = -"XDP redirect tool, using BPF_MAP_TYPE_DEVMAP\n" -"Usage: xdp_redirect_map <IFINDEX|IFNAME>_IN <IFINDEX|IFNAME>_OUT\n"; - -#include <linux/bpf.h> -#include <linux/if_link.h> -#include <assert.h> -#include <errno.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <stdbool.h> -#include <string.h> -#include <net/if.h> -#include <unistd.h> -#include <libgen.h> -#include <getopt.h> -#include <bpf/bpf.h> -#include <bpf/libbpf.h> -#include "bpf_util.h" -#include "xdp_sample_user.h" -#include "xdp_redirect_map.skel.h" - -static int mask = SAMPLE_RX_CNT | SAMPLE_REDIRECT_ERR_MAP_CNT | - SAMPLE_EXCEPTION_CNT | SAMPLE_DEVMAP_XMIT_CNT_MULTI; - -DEFINE_SAMPLE_INIT(xdp_redirect_map); - -static const struct option long_options[] = { - { "help", no_argument, NULL, 'h' }, - { "skb-mode", no_argument, NULL, 'S' }, - { "force", no_argument, NULL, 'F' }, - { "load-egress", no_argument, NULL, 'X' }, - { "stats", no_argument, NULL, 's' }, - { "interval", required_argument, NULL, 'i' }, - { "verbose", no_argument, NULL, 'v' }, - {} -}; - -static int verbose = 0; - -int main(int argc, char **argv) -{ - struct bpf_devmap_val devmap_val = {}; - bool xdp_devmap_attached = false; - struct xdp_redirect_map *skel; - char str[2 * IF_NAMESIZE + 1]; - char ifname_out[IF_NAMESIZE]; - struct bpf_map *tx_port_map; - char ifname_in[IF_NAMESIZE]; - int ifindex_in, ifindex_out; - unsigned long interval = 2; - int ret = EXIT_FAIL_OPTION; - struct bpf_program *prog; - bool generic = false; - bool force = false; - bool tried = false; - bool error = true; - int opt, key = 0; - - while ((opt = getopt_long(argc, argv, "hSFXi:vs", - long_options, NULL)) != -1) { - switch (opt) { - case 'S': - generic = true; - /* devmap_xmit tracepoint not available */ - mask &= ~(SAMPLE_DEVMAP_XMIT_CNT | - SAMPLE_DEVMAP_XMIT_CNT_MULTI); - break; - case 'F': - force = true; - break; - case 'X': - xdp_devmap_attached = true; - break; - case 'i': - interval = strtoul(optarg, NULL, 0); - break; - case 'v': - sample_switch_mode(); - verbose = 1; - break; - case 's': - mask |= SAMPLE_REDIRECT_MAP_CNT; - break; - case 'h': - error = false; - default: - sample_usage(argv, long_options, __doc__, mask, error); - return ret; - } - } - - if (argc <= optind + 1) { - sample_usage(argv, long_options, __doc__, mask, true); - goto end; - } - - ifindex_in = if_nametoindex(argv[optind]); - if (!ifindex_in) - ifindex_in = strtoul(argv[optind], NULL, 0); - - ifindex_out = if_nametoindex(argv[optind + 1]); - if (!ifindex_out) - ifindex_out = strtoul(argv[optind + 1], NULL, 0); - - if (!ifindex_in || !ifindex_out) { - fprintf(stderr, "Bad interface index or name\n"); - sample_usage(argv, long_options, __doc__, mask, true); - goto end; - } - - skel = xdp_redirect_map__open(); - if (!skel) { - fprintf(stderr, "Failed to xdp_redirect_map__open: %s\n", - strerror(errno)); - ret = EXIT_FAIL_BPF; - goto end; - } - - ret = sample_init_pre_load(skel); - if (ret < 0) { - fprintf(stderr, "Failed to sample_init_pre_load: %s\n", strerror(-ret)); - ret = EXIT_FAIL_BPF; - goto end_destroy; - } - - /* Load 2nd xdp prog on egress. */ - if (xdp_devmap_attached) { - ret = get_mac_addr(ifindex_out, skel->rodata->tx_mac_addr); - if (ret < 0) { - fprintf(stderr, "Failed to get interface %d mac address: %s\n", - ifindex_out, strerror(-ret)); - ret = EXIT_FAIL; - goto end_destroy; - } - if (verbose) - printf("Egress ifindex:%d using src MAC %02x:%02x:%02x:%02x:%02x:%02x\n", - ifindex_out, - skel->rodata->tx_mac_addr[0], skel->rodata->tx_mac_addr[1], - skel->rodata->tx_mac_addr[2], skel->rodata->tx_mac_addr[3], - skel->rodata->tx_mac_addr[4], skel->rodata->tx_mac_addr[5]); - } - - skel->rodata->from_match[0] = ifindex_in; - skel->rodata->to_match[0] = ifindex_out; - - ret = xdp_redirect_map__load(skel); - if (ret < 0) { - fprintf(stderr, "Failed to xdp_redirect_map__load: %s\n", - strerror(errno)); - ret = EXIT_FAIL_BPF; - goto end_destroy; - } - - ret = sample_init(skel, mask); - if (ret < 0) { - fprintf(stderr, "Failed to initialize sample: %s\n", strerror(-ret)); - ret = EXIT_FAIL; - goto end_destroy; - } - - prog = skel->progs.xdp_redirect_map_native; - tx_port_map = skel->maps.tx_port_native; -restart: - if (sample_install_xdp(prog, ifindex_in, generic, force) < 0) { - /* First try with struct bpf_devmap_val as value for generic - * mode, then fallback to sizeof(int) for older kernels. - */ - fprintf(stderr, - "Trying fallback to sizeof(int) as value_size for devmap in generic mode\n"); - if (generic && !tried) { - prog = skel->progs.xdp_redirect_map_general; - tx_port_map = skel->maps.tx_port_general; - tried = true; - goto restart; - } - ret = EXIT_FAIL_XDP; - goto end_destroy; - } - - /* Loading dummy XDP prog on out-device */ - sample_install_xdp(skel->progs.xdp_redirect_dummy_prog, ifindex_out, generic, force); - - devmap_val.ifindex = ifindex_out; - if (xdp_devmap_attached) - devmap_val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_redirect_map_egress); - ret = bpf_map_update_elem(bpf_map__fd(tx_port_map), &key, &devmap_val, 0); - if (ret < 0) { - fprintf(stderr, "Failed to update devmap value: %s\n", - strerror(errno)); - ret = EXIT_FAIL_BPF; - goto end_destroy; - } - - ret = EXIT_FAIL; - if (!if_indextoname(ifindex_in, ifname_in)) { - fprintf(stderr, "Failed to if_indextoname for %d: %s\n", ifindex_in, - strerror(errno)); - goto end_destroy; - } - - if (!if_indextoname(ifindex_out, ifname_out)) { - fprintf(stderr, "Failed to if_indextoname for %d: %s\n", ifindex_out, - strerror(errno)); - goto end_destroy; - } - - safe_strncpy(str, get_driver_name(ifindex_in), sizeof(str)); - printf("Redirecting from %s (ifindex %d; driver %s) to %s (ifindex %d; driver %s)\n", - ifname_in, ifindex_in, str, ifname_out, ifindex_out, get_driver_name(ifindex_out)); - snprintf(str, sizeof(str), "%s->%s", ifname_in, ifname_out); - - ret = sample_run(interval, NULL, NULL); - if (ret < 0) { - fprintf(stderr, "Failed during sample run: %s\n", strerror(-ret)); - ret = EXIT_FAIL; - goto end_destroy; - } - ret = EXIT_OK; -end_destroy: - xdp_redirect_map__destroy(skel); -end: - sample_exit(ret); -} |