diff options
Diffstat (limited to 'src/xdp/utils/xdp_loader.c')
| -rw-r--r-- | src/xdp/utils/xdp_loader.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/src/xdp/utils/xdp_loader.c b/src/xdp/utils/xdp_loader.c deleted file mode 100644 index d3b05d0c0..000000000 --- a/src/xdp/utils/xdp_loader.c +++ /dev/null @@ -1,165 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -static const char *__doc__ = "XDP loader\n" - " - Allows selecting BPF section --progsec name to XDP-attach to --dev\n"; - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <getopt.h> - -#include <locale.h> -#include <unistd.h> -#include <time.h> - -#include <bpf/bpf.h> -#include <bpf/libbpf.h> - -#include <net/if.h> -#include <linux/if_link.h> /* depend on kernel-headers installed */ - -#include "../common/common_params.h" -#include "../common/common_user_bpf_xdp.h" -#include "../common/common_libbpf.h" - -static const char *default_filename = "xdp_prog_kern.o"; - -static const struct option_wrapper long_options[] = { - - {{"help", no_argument, NULL, 'h' }, - "Show help", false}, - - {{"dev", required_argument, NULL, 'd' }, - "Operate on device <ifname>", "<ifname>", true}, - - {{"skb-mode", no_argument, NULL, 'S' }, - "Install XDP program in SKB (AKA generic) mode"}, - - {{"native-mode", no_argument, NULL, 'N' }, - "Install XDP program in native mode"}, - - {{"auto-mode", no_argument, NULL, 'A' }, - "Auto-detect SKB or native mode"}, - - {{"force", no_argument, NULL, 'F' }, - "Force install, replacing existing program on interface"}, - - {{"unload", no_argument, NULL, 'U' }, - "Unload XDP program instead of loading"}, - - {{"reuse-maps", no_argument, NULL, 'M' }, - "Reuse pinned maps"}, - - {{"quiet", no_argument, NULL, 'q' }, - "Quiet mode (no output)"}, - - {{"filename", required_argument, NULL, 1 }, - "Load program from <file>", "<file>"}, - - {{"progsec", required_argument, NULL, 2 }, - "Load program in <section> of the ELF file", "<section>"}, - - {{0, 0, NULL, 0 }, NULL, false} -}; - -#ifndef PATH_MAX -#define PATH_MAX 4096 -#endif - -const char *pin_basedir = "/sys/fs/bpf"; -const char *map_name = "xdp_stats_map"; - -/* Pinning maps under /sys/fs/bpf in subdir */ -int pin_maps_in_bpf_object(struct bpf_object *bpf_obj, struct config *cfg) -{ - char map_filename[PATH_MAX]; - int err, len; - - len = snprintf(map_filename, PATH_MAX, "%s/%s/%s", - pin_basedir, cfg->ifname, map_name); - if (len < 0) { - fprintf(stderr, "ERR: creating map_name\n"); - return EXIT_FAIL_OPTION; - } - - /* Existing/previous XDP prog might not have cleaned up */ - if (access(map_filename, F_OK ) != -1 ) { - if (verbose) - printf(" - Unpinning (remove) prev maps in %s/\n", - cfg->pin_dir); - - /* Basically calls unlink(3) on map_filename */ - err = bpf_object__unpin_maps(bpf_obj, cfg->pin_dir); - if (err) { - fprintf(stderr, "ERR: UNpinning maps in %s\n", cfg->pin_dir); - return EXIT_FAIL_BPF; - } - } - if (verbose) - printf(" - Pinning maps in %s/\n", cfg->pin_dir); - - /* This will pin all maps in our bpf_object */ - err = bpf_object__pin_maps(bpf_obj, cfg->pin_dir); - if (err) - return EXIT_FAIL_BPF; - - return 0; -} - -int main(int argc, char **argv) -{ - struct bpf_object *bpf_obj; - int err, len; - - struct config cfg = { - .xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST | XDP_FLAGS_DRV_MODE, - .ifindex = -1, - .do_unload = false, - }; - /* Set default BPF-ELF object file and BPF program name */ - strncpy(cfg.filename, default_filename, sizeof(cfg.filename)); - /* Cmdline options can change progsec */ - parse_cmdline_args(argc, argv, long_options, &cfg, __doc__); - - /* Required option */ - if (cfg.ifindex == -1) { - fprintf(stderr, "ERR: required option --dev missing\n\n"); - usage(argv[0], __doc__, long_options, (argc == 1)); - return EXIT_FAIL_OPTION; - } - if (cfg.do_unload) { - if (!cfg.reuse_maps) { - /* TODO: Miss unpin of maps on unload */ - } - return xdp_link_detach(cfg.ifindex, cfg.xdp_flags, 0); - } - - len = snprintf(cfg.pin_dir, PATH_MAX, "%s/%s", pin_basedir, cfg.ifname); - if (len < 0) { - fprintf(stderr, "ERR: creating pin dirname\n"); - return EXIT_FAIL_OPTION; - } - - - bpf_obj = load_bpf_and_xdp_attach(&cfg); - if (!bpf_obj) - return EXIT_FAIL_BPF; - - if (verbose) { - printf("Success: Loaded BPF-object(%s) and used section(%s)\n", - cfg.filename, cfg.progsec); - printf(" - XDP prog attached on device:%s(ifindex:%d)\n", - cfg.ifname, cfg.ifindex); - } - - /* Use the --dev name as subdir for exporting/pinning maps */ - if (!cfg.reuse_maps) { - err = pin_maps_in_bpf_object(bpf_obj, &cfg); - if (err) { - fprintf(stderr, "ERR: pinning maps\n"); - return err; - } - } - - return EXIT_OK; -} |