forked from Qortal/Brooklyn
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#include <uapi/linux/bpf.h>
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#include <linux/if_link.h>
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#include <test_progs.h>
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#include "test_xdp_devmap_helpers.skel.h"
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#include "test_xdp_with_devmap_helpers.skel.h"
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#define IFINDEX_LO 1
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void test_xdp_with_devmap_helpers(void)
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{
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struct test_xdp_with_devmap_helpers *skel;
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struct bpf_prog_info info = {};
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struct bpf_devmap_val val = {
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.ifindex = IFINDEX_LO,
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};
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__u32 len = sizeof(info);
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__u32 duration = 0, idx = 0;
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int err, dm_fd, map_fd;
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skel = test_xdp_with_devmap_helpers__open_and_load();
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if (CHECK_FAIL(!skel)) {
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perror("test_xdp_with_devmap_helpers__open_and_load");
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return;
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}
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/* can not attach program with DEVMAPs that allow programs
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* as xdp generic
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*/
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dm_fd = bpf_program__fd(skel->progs.xdp_redir_prog);
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err = bpf_set_link_xdp_fd(IFINDEX_LO, dm_fd, XDP_FLAGS_SKB_MODE);
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CHECK(err == 0, "Generic attach of program with 8-byte devmap",
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"should have failed\n");
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dm_fd = bpf_program__fd(skel->progs.xdp_dummy_dm);
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map_fd = bpf_map__fd(skel->maps.dm_ports);
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err = bpf_obj_get_info_by_fd(dm_fd, &info, &len);
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if (CHECK_FAIL(err))
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goto out_close;
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val.bpf_prog.fd = dm_fd;
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err = bpf_map_update_elem(map_fd, &idx, &val, 0);
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CHECK(err, "Add program to devmap entry",
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"err %d errno %d\n", err, errno);
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err = bpf_map_lookup_elem(map_fd, &idx, &val);
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CHECK(err, "Read devmap entry", "err %d errno %d\n", err, errno);
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CHECK(info.id != val.bpf_prog.id, "Expected program id in devmap entry",
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"expected %u read %u\n", info.id, val.bpf_prog.id);
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/* can not attach BPF_XDP_DEVMAP program to a device */
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err = bpf_set_link_xdp_fd(IFINDEX_LO, dm_fd, XDP_FLAGS_SKB_MODE);
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CHECK(err == 0, "Attach of BPF_XDP_DEVMAP program",
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"should have failed\n");
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val.ifindex = 1;
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val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_prog);
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err = bpf_map_update_elem(map_fd, &idx, &val, 0);
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CHECK(err == 0, "Add non-BPF_XDP_DEVMAP program to devmap entry",
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"should have failed\n");
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out_close:
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test_xdp_with_devmap_helpers__destroy(skel);
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}
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void test_neg_xdp_devmap_helpers(void)
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{
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struct test_xdp_devmap_helpers *skel;
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__u32 duration = 0;
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skel = test_xdp_devmap_helpers__open_and_load();
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if (CHECK(skel,
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"Load of XDP program accessing egress ifindex without attach type",
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"should have failed\n")) {
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test_xdp_devmap_helpers__destroy(skel);
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}
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}
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void test_xdp_devmap_attach(void)
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{
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if (test__start_subtest("DEVMAP with programs in entries"))
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test_xdp_with_devmap_helpers();
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if (test__start_subtest("Verifier check of DEVMAP programs"))
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test_neg_xdp_devmap_helpers();
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}
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