0bfb95f59a
Revert commit 544356524dd6 ("selftests/bpf: switch to new libbpf XDP APIs")
for now given this will heavily conflict with 4b27480dcaa7 ("bpf/selftests:
convert xdp_link test to ASSERT_* macros") upon merge. Andrii agreed to redo
the conversion cleanly after trees merged.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
138 lines
4.2 KiB
C
138 lines
4.2 KiB
C
// 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_frags_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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static 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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int err, dm_fd, map_fd;
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__u32 idx = 0;
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skel = test_xdp_with_devmap_helpers__open_and_load();
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if (!ASSERT_OK_PTR(skel, "test_xdp_with_devmap_helpers__open_and_load"))
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return;
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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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if (!ASSERT_OK(err, "Generic attach of program with 8-byte devmap"))
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goto out_close;
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err = bpf_set_link_xdp_fd(IFINDEX_LO, -1, XDP_FLAGS_SKB_MODE);
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ASSERT_OK(err, "XDP program detach");
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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 (!ASSERT_OK(err, "bpf_obj_get_info_by_fd"))
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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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ASSERT_OK(err, "Add program to devmap entry");
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err = bpf_map_lookup_elem(map_fd, &idx, &val);
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ASSERT_OK(err, "Read devmap entry");
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ASSERT_EQ(info.id, val.bpf_prog.id, "Match program id to devmap entry 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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if (!ASSERT_NEQ(err, 0, "Attach of BPF_XDP_DEVMAP program"))
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bpf_set_link_xdp_fd(IFINDEX_LO, -1, XDP_FLAGS_SKB_MODE);
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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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ASSERT_NEQ(err, 0, "Add non-BPF_XDP_DEVMAP program to devmap entry");
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/* Try to attach BPF_XDP program with frags to devmap when we have
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* already loaded a BPF_XDP program on the map
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*/
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idx = 1;
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val.ifindex = 1;
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val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_dm_frags);
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err = bpf_map_update_elem(map_fd, &idx, &val, 0);
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ASSERT_NEQ(err, 0, "Add BPF_XDP program with frags to devmap entry");
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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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static 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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skel = test_xdp_devmap_helpers__open_and_load();
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if (!ASSERT_EQ(skel, NULL,
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"Load of XDP program accessing egress ifindex without attach type")) {
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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_with_devmap_frags_helpers(void)
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{
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struct test_xdp_with_devmap_frags_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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int err, dm_fd_frags, map_fd;
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__u32 idx = 0;
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skel = test_xdp_with_devmap_frags_helpers__open_and_load();
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if (!ASSERT_OK_PTR(skel, "test_xdp_with_devmap_helpers__open_and_load"))
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return;
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dm_fd_frags = bpf_program__fd(skel->progs.xdp_dummy_dm_frags);
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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_frags, &info, &len);
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if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd"))
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goto out_close;
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val.bpf_prog.fd = dm_fd_frags;
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err = bpf_map_update_elem(map_fd, &idx, &val, 0);
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ASSERT_OK(err, "Add frags program to devmap entry");
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err = bpf_map_lookup_elem(map_fd, &idx, &val);
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ASSERT_OK(err, "Read devmap entry");
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ASSERT_EQ(info.id, val.bpf_prog.id,
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"Match program id to devmap entry prog_id");
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/* Try to attach BPF_XDP program to devmap when we have
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* already loaded a BPF_XDP program with frags on the map
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*/
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idx = 1;
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val.ifindex = 1;
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val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_dm);
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err = bpf_map_update_elem(map_fd, &idx, &val, 0);
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ASSERT_NEQ(err, 0, "Add BPF_XDP program to devmap entry");
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out_close:
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test_xdp_with_devmap_frags_helpers__destroy(skel);
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}
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void serial_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("DEVMAP with frags programs in entries"))
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test_xdp_with_devmap_frags_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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