6db28e24ae
Introduce kernel selftest for new bpf_xdp_{load,store}_bytes helpers.
and bpf_xdp_pointer/bpf_xdp_copy_buf utility routines.
Acked-by: Toke Hoiland-Jorgensen <toke@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/2c99ae663a5dcfbd9240b1d0489ad55dea4f4601.1642758637.git.lorenzo@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <test_progs.h>
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#include <network_helpers.h>
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void test_xdp_update_frags(void)
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{
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const char *file = "./test_xdp_update_frags.o";
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__u32 duration, retval, size;
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struct bpf_program *prog;
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struct bpf_object *obj;
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int err, prog_fd;
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__u32 *offset;
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__u8 *buf;
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obj = bpf_object__open(file);
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if (libbpf_get_error(obj))
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return;
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prog = bpf_object__next_program(obj, NULL);
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if (bpf_object__load(obj))
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return;
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prog_fd = bpf_program__fd(prog);
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buf = malloc(128);
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if (!ASSERT_OK_PTR(buf, "alloc buf 128b"))
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goto out;
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memset(buf, 0, 128);
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offset = (__u32 *)buf;
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*offset = 16;
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buf[*offset] = 0xaa; /* marker at offset 16 (head) */
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buf[*offset + 15] = 0xaa; /* marker at offset 31 (head) */
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err = bpf_prog_test_run(prog_fd, 1, buf, 128,
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buf, &size, &retval, &duration);
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/* test_xdp_update_frags: buf[16,31]: 0xaa -> 0xbb */
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ASSERT_OK(err, "xdp_update_frag");
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ASSERT_EQ(retval, XDP_PASS, "xdp_update_frag retval");
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ASSERT_EQ(buf[16], 0xbb, "xdp_update_frag buf[16]");
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ASSERT_EQ(buf[31], 0xbb, "xdp_update_frag buf[31]");
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free(buf);
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buf = malloc(9000);
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if (!ASSERT_OK_PTR(buf, "alloc buf 9Kb"))
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goto out;
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memset(buf, 0, 9000);
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offset = (__u32 *)buf;
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*offset = 5000;
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buf[*offset] = 0xaa; /* marker at offset 5000 (frag0) */
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buf[*offset + 15] = 0xaa; /* marker at offset 5015 (frag0) */
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err = bpf_prog_test_run(prog_fd, 1, buf, 9000,
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buf, &size, &retval, &duration);
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/* test_xdp_update_frags: buf[5000,5015]: 0xaa -> 0xbb */
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ASSERT_OK(err, "xdp_update_frag");
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ASSERT_EQ(retval, XDP_PASS, "xdp_update_frag retval");
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ASSERT_EQ(buf[5000], 0xbb, "xdp_update_frag buf[5000]");
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ASSERT_EQ(buf[5015], 0xbb, "xdp_update_frag buf[5015]");
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memset(buf, 0, 9000);
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offset = (__u32 *)buf;
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*offset = 3510;
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buf[*offset] = 0xaa; /* marker at offset 3510 (head) */
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buf[*offset + 15] = 0xaa; /* marker at offset 3525 (frag0) */
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err = bpf_prog_test_run(prog_fd, 1, buf, 9000,
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buf, &size, &retval, &duration);
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/* test_xdp_update_frags: buf[3510,3525]: 0xaa -> 0xbb */
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ASSERT_OK(err, "xdp_update_frag");
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ASSERT_EQ(retval, XDP_PASS, "xdp_update_frag retval");
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ASSERT_EQ(buf[3510], 0xbb, "xdp_update_frag buf[3510]");
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ASSERT_EQ(buf[3525], 0xbb, "xdp_update_frag buf[3525]");
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memset(buf, 0, 9000);
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offset = (__u32 *)buf;
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*offset = 7606;
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buf[*offset] = 0xaa; /* marker at offset 7606 (frag0) */
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buf[*offset + 15] = 0xaa; /* marker at offset 7621 (frag1) */
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err = bpf_prog_test_run(prog_fd, 1, buf, 9000,
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buf, &size, &retval, &duration);
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/* test_xdp_update_frags: buf[7606,7621]: 0xaa -> 0xbb */
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ASSERT_OK(err, "xdp_update_frag");
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ASSERT_EQ(retval, XDP_PASS, "xdp_update_frag retval");
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ASSERT_EQ(buf[7606], 0xbb, "xdp_update_frag buf[7606]");
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ASSERT_EQ(buf[7621], 0xbb, "xdp_update_frag buf[7621]");
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free(buf);
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out:
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bpf_object__close(obj);
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}
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void test_xdp_adjust_frags(void)
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{
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if (test__start_subtest("xdp_adjust_frags"))
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test_xdp_update_frags();
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}
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