David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | #include <uapi/linux/bpf.h> |
| 3 | #include <linux/if_link.h> |
| 4 | #include <test_progs.h> |
| 5 | |
| 6 | #include "test_xdp_devmap_helpers.skel.h" |
Lorenzo Bianconi | 0c5e118 | 2022-01-21 11:10:05 +0100 | [diff] [blame] | 7 | #include "test_xdp_with_devmap_frags_helpers.skel.h" |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 8 | #include "test_xdp_with_devmap_helpers.skel.h" |
| 9 | |
| 10 | #define IFINDEX_LO 1 |
| 11 | |
Andrii Nakryiko | 6972dc3 | 2021-10-22 15:32:25 -0700 | [diff] [blame] | 12 | static void test_xdp_with_devmap_helpers(void) |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 13 | { |
| 14 | struct test_xdp_with_devmap_helpers *skel; |
| 15 | struct bpf_prog_info info = {}; |
| 16 | struct bpf_devmap_val val = { |
| 17 | .ifindex = IFINDEX_LO, |
| 18 | }; |
| 19 | __u32 len = sizeof(info); |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 20 | int err, dm_fd, map_fd; |
Kumar Kartikeya Dwivedi | 36246d5 | 2021-07-02 16:48:25 +0530 | [diff] [blame] | 21 | __u32 idx = 0; |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 22 | |
| 23 | |
| 24 | skel = test_xdp_with_devmap_helpers__open_and_load(); |
Kumar Kartikeya Dwivedi | 36246d5 | 2021-07-02 16:48:25 +0530 | [diff] [blame] | 25 | if (!ASSERT_OK_PTR(skel, "test_xdp_with_devmap_helpers__open_and_load")) |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 26 | return; |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 27 | |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 28 | dm_fd = bpf_program__fd(skel->progs.xdp_redir_prog); |
Andrii Nakryiko | e4e284a | 2022-02-02 14:59:15 -0800 | [diff] [blame] | 29 | err = bpf_xdp_attach(IFINDEX_LO, dm_fd, XDP_FLAGS_SKB_MODE, NULL); |
Kumar Kartikeya Dwivedi | 36246d5 | 2021-07-02 16:48:25 +0530 | [diff] [blame] | 30 | if (!ASSERT_OK(err, "Generic attach of program with 8-byte devmap")) |
| 31 | goto out_close; |
| 32 | |
Andrii Nakryiko | e4e284a | 2022-02-02 14:59:15 -0800 | [diff] [blame] | 33 | err = bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL); |
Kumar Kartikeya Dwivedi | 36246d5 | 2021-07-02 16:48:25 +0530 | [diff] [blame] | 34 | ASSERT_OK(err, "XDP program detach"); |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 35 | |
| 36 | dm_fd = bpf_program__fd(skel->progs.xdp_dummy_dm); |
| 37 | map_fd = bpf_map__fd(skel->maps.dm_ports); |
Ilya Leoshkevich | c5a237a | 2023-02-15 00:12:18 +0100 | [diff] [blame] | 38 | err = bpf_prog_get_info_by_fd(dm_fd, &info, &len); |
| 39 | if (!ASSERT_OK(err, "bpf_prog_get_info_by_fd")) |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 40 | goto out_close; |
| 41 | |
| 42 | val.bpf_prog.fd = dm_fd; |
| 43 | err = bpf_map_update_elem(map_fd, &idx, &val, 0); |
Kumar Kartikeya Dwivedi | 36246d5 | 2021-07-02 16:48:25 +0530 | [diff] [blame] | 44 | ASSERT_OK(err, "Add program to devmap entry"); |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 45 | |
| 46 | err = bpf_map_lookup_elem(map_fd, &idx, &val); |
Kumar Kartikeya Dwivedi | 36246d5 | 2021-07-02 16:48:25 +0530 | [diff] [blame] | 47 | ASSERT_OK(err, "Read devmap entry"); |
| 48 | ASSERT_EQ(info.id, val.bpf_prog.id, "Match program id to devmap entry prog_id"); |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 49 | |
| 50 | /* can not attach BPF_XDP_DEVMAP program to a device */ |
Andrii Nakryiko | e4e284a | 2022-02-02 14:59:15 -0800 | [diff] [blame] | 51 | err = bpf_xdp_attach(IFINDEX_LO, dm_fd, XDP_FLAGS_SKB_MODE, NULL); |
Kumar Kartikeya Dwivedi | 36246d5 | 2021-07-02 16:48:25 +0530 | [diff] [blame] | 52 | if (!ASSERT_NEQ(err, 0, "Attach of BPF_XDP_DEVMAP program")) |
Andrii Nakryiko | e4e284a | 2022-02-02 14:59:15 -0800 | [diff] [blame] | 53 | bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL); |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 54 | |
| 55 | val.ifindex = 1; |
| 56 | val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_prog); |
| 57 | err = bpf_map_update_elem(map_fd, &idx, &val, 0); |
Kumar Kartikeya Dwivedi | 36246d5 | 2021-07-02 16:48:25 +0530 | [diff] [blame] | 58 | ASSERT_NEQ(err, 0, "Add non-BPF_XDP_DEVMAP program to devmap entry"); |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 59 | |
Lorenzo Bianconi | 0c5e118 | 2022-01-21 11:10:05 +0100 | [diff] [blame] | 60 | /* Try to attach BPF_XDP program with frags to devmap when we have |
| 61 | * already loaded a BPF_XDP program on the map |
| 62 | */ |
| 63 | idx = 1; |
| 64 | val.ifindex = 1; |
| 65 | val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_dm_frags); |
| 66 | err = bpf_map_update_elem(map_fd, &idx, &val, 0); |
| 67 | ASSERT_NEQ(err, 0, "Add BPF_XDP program with frags to devmap entry"); |
| 68 | |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 69 | out_close: |
| 70 | test_xdp_with_devmap_helpers__destroy(skel); |
| 71 | } |
| 72 | |
Andrii Nakryiko | 6972dc3 | 2021-10-22 15:32:25 -0700 | [diff] [blame] | 73 | static void test_neg_xdp_devmap_helpers(void) |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 74 | { |
| 75 | struct test_xdp_devmap_helpers *skel; |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 76 | |
| 77 | skel = test_xdp_devmap_helpers__open_and_load(); |
Kumar Kartikeya Dwivedi | 36246d5 | 2021-07-02 16:48:25 +0530 | [diff] [blame] | 78 | if (!ASSERT_EQ(skel, NULL, |
| 79 | "Load of XDP program accessing egress ifindex without attach type")) { |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 80 | test_xdp_devmap_helpers__destroy(skel); |
| 81 | } |
| 82 | } |
| 83 | |
Hou Tao | 5912fcb | 2022-02-08 14:54:44 +0800 | [diff] [blame] | 84 | static void test_xdp_with_devmap_frags_helpers(void) |
Lorenzo Bianconi | 0c5e118 | 2022-01-21 11:10:05 +0100 | [diff] [blame] | 85 | { |
| 86 | struct test_xdp_with_devmap_frags_helpers *skel; |
| 87 | struct bpf_prog_info info = {}; |
| 88 | struct bpf_devmap_val val = { |
| 89 | .ifindex = IFINDEX_LO, |
| 90 | }; |
| 91 | __u32 len = sizeof(info); |
| 92 | int err, dm_fd_frags, map_fd; |
| 93 | __u32 idx = 0; |
| 94 | |
| 95 | skel = test_xdp_with_devmap_frags_helpers__open_and_load(); |
| 96 | if (!ASSERT_OK_PTR(skel, "test_xdp_with_devmap_helpers__open_and_load")) |
| 97 | return; |
| 98 | |
| 99 | dm_fd_frags = bpf_program__fd(skel->progs.xdp_dummy_dm_frags); |
| 100 | map_fd = bpf_map__fd(skel->maps.dm_ports); |
Ilya Leoshkevich | c5a237a | 2023-02-15 00:12:18 +0100 | [diff] [blame] | 101 | err = bpf_prog_get_info_by_fd(dm_fd_frags, &info, &len); |
| 102 | if (!ASSERT_OK(err, "bpf_prog_get_info_by_fd")) |
Lorenzo Bianconi | 0c5e118 | 2022-01-21 11:10:05 +0100 | [diff] [blame] | 103 | goto out_close; |
| 104 | |
| 105 | val.bpf_prog.fd = dm_fd_frags; |
| 106 | err = bpf_map_update_elem(map_fd, &idx, &val, 0); |
| 107 | ASSERT_OK(err, "Add frags program to devmap entry"); |
| 108 | |
| 109 | err = bpf_map_lookup_elem(map_fd, &idx, &val); |
| 110 | ASSERT_OK(err, "Read devmap entry"); |
| 111 | ASSERT_EQ(info.id, val.bpf_prog.id, |
| 112 | "Match program id to devmap entry prog_id"); |
| 113 | |
| 114 | /* Try to attach BPF_XDP program to devmap when we have |
| 115 | * already loaded a BPF_XDP program with frags on the map |
| 116 | */ |
| 117 | idx = 1; |
| 118 | val.ifindex = 1; |
| 119 | val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_dm); |
| 120 | err = bpf_map_update_elem(map_fd, &idx, &val, 0); |
| 121 | ASSERT_NEQ(err, 0, "Add BPF_XDP program to devmap entry"); |
| 122 | |
| 123 | out_close: |
| 124 | test_xdp_with_devmap_frags_helpers__destroy(skel); |
| 125 | } |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 126 | |
Yucong Sun | d3f7b16 | 2021-10-06 11:56:19 -0700 | [diff] [blame] | 127 | void serial_test_xdp_devmap_attach(void) |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 128 | { |
| 129 | if (test__start_subtest("DEVMAP with programs in entries")) |
| 130 | test_xdp_with_devmap_helpers(); |
| 131 | |
Lorenzo Bianconi | 0c5e118 | 2022-01-21 11:10:05 +0100 | [diff] [blame] | 132 | if (test__start_subtest("DEVMAP with frags programs in entries")) |
| 133 | test_xdp_with_devmap_frags_helpers(); |
| 134 | |
David Ahern | d39aec7 | 2020-05-29 16:07:16 -0600 | [diff] [blame] | 135 | if (test__start_subtest("Verifier check of DEVMAP programs")) |
| 136 | test_neg_xdp_devmap_helpers(); |
| 137 | } |