LXR linux/tools/testing/selftests/bpf/prog_tests/xdp

   1// SPDX-License-Identifier: GPL-2.0
   2#include <linux/if_link.h>
   3#include <test_progs.h>
   4
   5#define IFINDEX_LO 1
   6
   7void serial_test_xdp_info(void)
   8{
   9        __u32 len = sizeof(struct bpf_prog_info), duration = 0, prog_id;
  10        const char *file = "./xdp_dummy.o";
  11        struct bpf_prog_info info = {};
  12        struct bpf_object *obj;
  13        int err, prog_fd;
  14
  15        /* Get prog_id for XDP_ATTACHED_NONE mode */
  16
  17        err = bpf_xdp_query_id(IFINDEX_LO, 0, &prog_id);
  18        if (CHECK(err, "get_xdp_none", "errno=%d\n", errno))
  19                return;
  20        if (CHECK(prog_id, "prog_id_none", "unexpected prog_id=%u\n", prog_id))
  21                return;
  22
  23        err = bpf_xdp_query_id(IFINDEX_LO, XDP_FLAGS_SKB_MODE, &prog_id);
  24        if (CHECK(err, "get_xdp_none_skb", "errno=%d\n", errno))
  25                return;
  26        if (CHECK(prog_id, "prog_id_none_skb", "unexpected prog_id=%u\n",
  27                  prog_id))
  28                return;
  29
  30        /* Setup prog */
  31
  32        err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
  33        if (CHECK_FAIL(err))
  34                return;
  35
  36        err = bpf_obj_get_info_by_fd(prog_fd, &info, &len);
  37        if (CHECK(err, "get_prog_info", "errno=%d\n", errno))
  38                goto out_close;
  39
  40        err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL);
  41        if (CHECK(err, "set_xdp_skb", "errno=%d\n", errno))
  42                goto out_close;
  43
  44        /* Get prog_id for single prog mode */
  45
  46        err = bpf_xdp_query_id(IFINDEX_LO, 0, &prog_id);
  47        if (CHECK(err, "get_xdp", "errno=%d\n", errno))
  48                goto out;
  49        if (CHECK(prog_id != info.id, "prog_id", "prog_id not available\n"))
  50                goto out;
  51
  52        err = bpf_xdp_query_id(IFINDEX_LO, XDP_FLAGS_SKB_MODE, &prog_id);
  53        if (CHECK(err, "get_xdp_skb", "errno=%d\n", errno))
  54                goto out;
  55        if (CHECK(prog_id != info.id, "prog_id_skb", "prog_id not available\n"))
  56                goto out;
  57
  58        err = bpf_xdp_query_id(IFINDEX_LO, XDP_FLAGS_DRV_MODE, &prog_id);
  59        if (CHECK(err, "get_xdp_drv", "errno=%d\n", errno))
  60                goto out;
  61        if (CHECK(prog_id, "prog_id_drv", "unexpected prog_id=%u\n", prog_id))
  62                goto out;
  63
  64out:
  65        bpf_xdp_detach(IFINDEX_LO, 0, NULL);
  66out_close:
  67        bpf_object__close(obj);
  68}
  69