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1// SPDX-License-Identifier: GPL-2.02#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 110 11static 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_prog_get_info_by_fd(prog_fd, &info, &len);37 if (!ASSERT_OK(err, "bpf_prog_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 have59 * already loaded a BPF_XDP program on the map60 */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 67out_close:68 test_xdp_with_cpumap_helpers__destroy(skel);69}70 71static 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_prog_get_info_by_fd(frags_prog_fd, &info, &len);89 if (!ASSERT_OK(err, "bpf_prog_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 have102 * already loaded a BPF_XDP program with frags on the map103 */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 110out_close:111 test_xdp_with_cpumap_frags_helpers__destroy(skel);112}113 114void 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