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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | // SPDX-License-Identifier: GPL-2.0 #include <uapi/linux/bpf.h> #include <linux/if_link.h> #include <test_progs.h> #include "test_xdp_with_cpumap_frags_helpers.skel.h" #include "test_xdp_with_cpumap_helpers.skel.h" #define IFINDEX_LO 1 static void test_xdp_with_cpumap_helpers(void) { struct test_xdp_with_cpumap_helpers *skel; struct bpf_prog_info info = {}; __u32 len = sizeof(info); struct bpf_cpumap_val val = { .qsize = 192, }; int err, prog_fd, map_fd; __u32 idx = 0; skel = test_xdp_with_cpumap_helpers__open_and_load(); if (!ASSERT_OK_PTR(skel, "test_xdp_with_cpumap_helpers__open_and_load")) return; prog_fd = bpf_program__fd(skel->progs.xdp_redir_prog); err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL); if (!ASSERT_OK(err, "Generic attach of program with 8-byte CPUMAP")) goto out_close; err = bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL); ASSERT_OK(err, "XDP program detach"); prog_fd = bpf_program__fd(skel->progs.xdp_dummy_cm); map_fd = bpf_map__fd(skel->maps.cpu_map); err = bpf_obj_get_info_by_fd(prog_fd, &info, &len); if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd")) goto out_close; val.bpf_prog.fd = prog_fd; err = bpf_map_update_elem(map_fd, &idx, &val, 0); ASSERT_OK(err, "Add program to cpumap entry"); err = bpf_map_lookup_elem(map_fd, &idx, &val); ASSERT_OK(err, "Read cpumap entry"); ASSERT_EQ(info.id, val.bpf_prog.id, "Match program id to cpumap entry prog_id"); /* can not attach BPF_XDP_CPUMAP program to a device */ err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL); if (!ASSERT_NEQ(err, 0, "Attach of BPF_XDP_CPUMAP program")) bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL); val.qsize = 192; val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_prog); err = bpf_map_update_elem(map_fd, &idx, &val, 0); ASSERT_NEQ(err, 0, "Add non-BPF_XDP_CPUMAP program to cpumap entry"); /* Try to attach BPF_XDP program with frags to cpumap when we have * already loaded a BPF_XDP program on the map */ idx = 1; val.qsize = 192; val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_cm_frags); err = bpf_map_update_elem(map_fd, &idx, &val, 0); ASSERT_NEQ(err, 0, "Add BPF_XDP program with frags to cpumap entry"); out_close: test_xdp_with_cpumap_helpers__destroy(skel); } static void test_xdp_with_cpumap_frags_helpers(void) { struct test_xdp_with_cpumap_frags_helpers *skel; struct bpf_prog_info info = {}; __u32 len = sizeof(info); struct bpf_cpumap_val val = { .qsize = 192, }; int err, frags_prog_fd, map_fd; __u32 idx = 0; skel = test_xdp_with_cpumap_frags_helpers__open_and_load(); if (!ASSERT_OK_PTR(skel, "test_xdp_with_cpumap_helpers__open_and_load")) return; frags_prog_fd = bpf_program__fd(skel->progs.xdp_dummy_cm_frags); map_fd = bpf_map__fd(skel->maps.cpu_map); err = bpf_obj_get_info_by_fd(frags_prog_fd, &info, &len); if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd")) goto out_close; val.bpf_prog.fd = frags_prog_fd; err = bpf_map_update_elem(map_fd, &idx, &val, 0); ASSERT_OK(err, "Add program to cpumap entry"); err = bpf_map_lookup_elem(map_fd, &idx, &val); ASSERT_OK(err, "Read cpumap entry"); ASSERT_EQ(info.id, val.bpf_prog.id, "Match program id to cpumap entry prog_id"); /* Try to attach BPF_XDP program to cpumap when we have * already loaded a BPF_XDP program with frags on the map */ idx = 1; val.qsize = 192; val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_cm); err = bpf_map_update_elem(map_fd, &idx, &val, 0); ASSERT_NEQ(err, 0, "Add BPF_XDP program to cpumap entry"); out_close: test_xdp_with_cpumap_frags_helpers__destroy(skel); } void serial_test_xdp_cpumap_attach(void) { if (test__start_subtest("CPUMAP with programs in entries")) test_xdp_with_cpumap_helpers(); if (test__start_subtest("CPUMAP with frags programs in entries")) test_xdp_with_cpumap_frags_helpers(); } |