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e4e284a8c0
Switch to using new bpf_xdp_*() APIs across all selftests. Take
advantage of a more straightforward and user-friendly semantics of
old_prog_fd (0 means "don't care") in few places.
This is a redo of 544356524d ("selftests/bpf: switch to new libbpf XDP
APIs"), which was previously reverted to minimize conflicts during bpf
and bpf-next tree merge.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20220202225916.3313522-6-andrii@kernel.org
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <test_progs.h>
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#define IFINDEX_LO 1
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#define XDP_FLAGS_REPLACE (1U << 4)
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void serial_test_xdp_attach(void)
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{
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__u32 duration = 0, id1, id2, id0 = 0, len;
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struct bpf_object *obj1, *obj2, *obj3;
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const char *file = "./test_xdp.o";
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struct bpf_prog_info info = {};
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int err, fd1, fd2, fd3;
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LIBBPF_OPTS(bpf_xdp_attach_opts, opts);
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len = sizeof(info);
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err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj1, &fd1);
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if (CHECK_FAIL(err))
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return;
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err = bpf_obj_get_info_by_fd(fd1, &info, &len);
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if (CHECK_FAIL(err))
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goto out_1;
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id1 = info.id;
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err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj2, &fd2);
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if (CHECK_FAIL(err))
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goto out_1;
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memset(&info, 0, sizeof(info));
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err = bpf_obj_get_info_by_fd(fd2, &info, &len);
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if (CHECK_FAIL(err))
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goto out_2;
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id2 = info.id;
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err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj3, &fd3);
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if (CHECK_FAIL(err))
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goto out_2;
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err = bpf_xdp_attach(IFINDEX_LO, fd1, XDP_FLAGS_REPLACE, &opts);
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if (CHECK(err, "load_ok", "initial load failed"))
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goto out_close;
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err = bpf_xdp_query_id(IFINDEX_LO, 0, &id0);
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if (CHECK(err || id0 != id1, "id1_check",
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"loaded prog id %u != id1 %u, err %d", id0, id1, err))
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goto out_close;
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err = bpf_xdp_attach(IFINDEX_LO, fd2, XDP_FLAGS_REPLACE, &opts);
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if (CHECK(!err, "load_fail", "load with expected id didn't fail"))
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goto out;
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opts.old_prog_fd = fd1;
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err = bpf_xdp_attach(IFINDEX_LO, fd2, 0, &opts);
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if (CHECK(err, "replace_ok", "replace valid old_fd failed"))
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goto out;
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err = bpf_xdp_query_id(IFINDEX_LO, 0, &id0);
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if (CHECK(err || id0 != id2, "id2_check",
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"loaded prog id %u != id2 %u, err %d", id0, id2, err))
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goto out_close;
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err = bpf_xdp_attach(IFINDEX_LO, fd3, 0, &opts);
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if (CHECK(!err, "replace_fail", "replace invalid old_fd didn't fail"))
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goto out;
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err = bpf_xdp_detach(IFINDEX_LO, 0, &opts);
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if (CHECK(!err, "remove_fail", "remove invalid old_fd didn't fail"))
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goto out;
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opts.old_prog_fd = fd2;
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err = bpf_xdp_detach(IFINDEX_LO, 0, &opts);
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if (CHECK(err, "remove_ok", "remove valid old_fd failed"))
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goto out;
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err = bpf_xdp_query_id(IFINDEX_LO, 0, &id0);
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if (CHECK(err || id0 != 0, "unload_check",
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"loaded prog id %u != 0, err %d", id0, err))
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goto out_close;
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out:
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bpf_xdp_detach(IFINDEX_LO, 0, NULL);
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out_close:
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bpf_object__close(obj3);
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out_2:
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bpf_object__close(obj2);
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out_1:
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bpf_object__close(obj1);
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}
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