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_with_cpumap_frags_helpers.skel.h" 7 #include "test_xdp_with_cpumap_helpers.skel.h" 8 9 #define IFINDEX_LO 1 10 11 static void test_xdp_with_cpumap_helpers(void) 12 { 13 struct test_xdp_with_cpumap_helpers *skel; 14 struct bpf_prog_info info = {}; 15 __u32 len = sizeof(info); 16 struct bpf_cpumap_val val = { 17 .qsize = 192, 18 }; 19 int err, prog_fd, map_fd; 20 __u32 idx = 0; 21 22 skel = test_xdp_with_cpumap_helpers__open_and_load(); 23 if (!ASSERT_OK_PTR(skel, "test_xdp_with_cpumap_helpers__open_and_load")) 24 return; 25 26 prog_fd = bpf_program__fd(skel->progs.xdp_redir_prog); 27 err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL); 28 if (!ASSERT_OK(err, "Generic attach of program with 8-byte CPUMAP")) 29 goto out_close; 30 31 err = bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL); 32 ASSERT_OK(err, "XDP program detach"); 33 34 prog_fd = bpf_program__fd(skel->progs.xdp_dummy_cm); 35 map_fd = bpf_map__fd(skel->maps.cpu_map); 36 err = bpf_obj_get_info_by_fd(prog_fd, &info, &len); 37 if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd")) 38 goto out_close; 39 40 val.bpf_prog.fd = prog_fd; 41 err = bpf_map_update_elem(map_fd, &idx, &val, 0); 42 ASSERT_OK(err, "Add program to cpumap entry"); 43 44 err = bpf_map_lookup_elem(map_fd, &idx, &val); 45 ASSERT_OK(err, "Read cpumap entry"); 46 ASSERT_EQ(info.id, val.bpf_prog.id, "Match program id to cpumap entry prog_id"); 47 48 /* can not attach BPF_XDP_CPUMAP program to a device */ 49 err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL); 50 if (!ASSERT_NEQ(err, 0, "Attach of BPF_XDP_CPUMAP program")) 51 bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL); 52 53 val.qsize = 192; 54 val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_prog); 55 err = bpf_map_update_elem(map_fd, &idx, &val, 0); 56 ASSERT_NEQ(err, 0, "Add non-BPF_XDP_CPUMAP program to cpumap entry"); 57 58 /* Try to attach BPF_XDP program with frags to cpumap when we have 59 * already loaded a BPF_XDP program on the map 60 */ 61 idx = 1; 62 val.qsize = 192; 63 val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_cm_frags); 64 err = bpf_map_update_elem(map_fd, &idx, &val, 0); 65 ASSERT_NEQ(err, 0, "Add BPF_XDP program with frags to cpumap entry"); 66 67 out_close: 68 test_xdp_with_cpumap_helpers__destroy(skel); 69 } 70 71 static void test_xdp_with_cpumap_frags_helpers(void) 72 { 73 struct test_xdp_with_cpumap_frags_helpers *skel; 74 struct bpf_prog_info info = {}; 75 __u32 len = sizeof(info); 76 struct bpf_cpumap_val val = { 77 .qsize = 192, 78 }; 79 int err, frags_prog_fd, map_fd; 80 __u32 idx = 0; 81 82 skel = test_xdp_with_cpumap_frags_helpers__open_and_load(); 83 if (!ASSERT_OK_PTR(skel, "test_xdp_with_cpumap_helpers__open_and_load")) 84 return; 85 86 frags_prog_fd = bpf_program__fd(skel->progs.xdp_dummy_cm_frags); 87 map_fd = bpf_map__fd(skel->maps.cpu_map); 88 err = bpf_obj_get_info_by_fd(frags_prog_fd, &info, &len); 89 if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd")) 90 goto out_close; 91 92 val.bpf_prog.fd = frags_prog_fd; 93 err = bpf_map_update_elem(map_fd, &idx, &val, 0); 94 ASSERT_OK(err, "Add program to cpumap entry"); 95 96 err = bpf_map_lookup_elem(map_fd, &idx, &val); 97 ASSERT_OK(err, "Read cpumap entry"); 98 ASSERT_EQ(info.id, val.bpf_prog.id, 99 "Match program id to cpumap entry prog_id"); 100 101 /* Try to attach BPF_XDP program to cpumap when we have 102 * already loaded a BPF_XDP program with frags on the map 103 */ 104 idx = 1; 105 val.qsize = 192; 106 val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_cm); 107 err = bpf_map_update_elem(map_fd, &idx, &val, 0); 108 ASSERT_NEQ(err, 0, "Add BPF_XDP program to cpumap entry"); 109 110 out_close: 111 test_xdp_with_cpumap_frags_helpers__destroy(skel); 112 } 113 114 void serial_test_xdp_cpumap_attach(void) 115 { 116 if (test__start_subtest("CPUMAP with programs in entries")) 117 test_xdp_with_cpumap_helpers(); 118 119 if (test__start_subtest("CPUMAP with frags programs in entries")) 120 test_xdp_with_cpumap_frags_helpers(); 121 } 122