diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c | 114 |
1 files changed, 101 insertions, 13 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c index b2b2d85dbb1b..43264347e7d7 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c @@ -37,21 +37,26 @@ static void test_xdp_adjust_tail_shrink(void) bpf_object__close(obj); } -static void test_xdp_adjust_tail_grow(void) +static void test_xdp_adjust_tail_grow(bool is_64k_pagesize) { const char *file = "./test_xdp_adjust_tail_grow.bpf.o"; struct bpf_object *obj; - char buf[4096]; /* avoid segfault: large buf to hold grow results */ + char buf[8192]; /* avoid segfault: large buf to hold grow results */ __u32 expect_sz; int err, prog_fd; LIBBPF_OPTS(bpf_test_run_opts, topts, .data_in = &pkt_v4, - .data_size_in = sizeof(pkt_v4), .data_out = buf, .data_size_out = sizeof(buf), .repeat = 1, ); + /* topts.data_size_in as a special signal to bpf prog */ + if (is_64k_pagesize) + topts.data_size_in = sizeof(pkt_v4) - 1; + else + topts.data_size_in = sizeof(pkt_v4); + err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd); if (!ASSERT_OK(err, "test_xdp_adjust_tail_grow")) return; @@ -208,7 +213,7 @@ out: bpf_object__close(obj); } -static void test_xdp_adjust_frags_tail_grow(void) +static void test_xdp_adjust_frags_tail_grow_4k(void) { const char *file = "./test_xdp_adjust_tail_grow.bpf.o"; __u32 exp_size; @@ -246,14 +251,20 @@ static void test_xdp_adjust_frags_tail_grow(void) ASSERT_EQ(topts.retval, XDP_TX, "9Kb+10b retval"); ASSERT_EQ(topts.data_size_out, exp_size, "9Kb+10b size"); - for (i = 0; i < 9000; i++) - ASSERT_EQ(buf[i], 1, "9Kb+10b-old"); + for (i = 0; i < 9000; i++) { + if (buf[i] != 1) + ASSERT_EQ(buf[i], 1, "9Kb+10b-old"); + } - for (i = 9000; i < 9010; i++) - ASSERT_EQ(buf[i], 0, "9Kb+10b-new"); + for (i = 9000; i < 9010; i++) { + if (buf[i] != 0) + ASSERT_EQ(buf[i], 0, "9Kb+10b-new"); + } - for (i = 9010; i < 16384; i++) - ASSERT_EQ(buf[i], 1, "9Kb+10b-untouched"); + for (i = 9010; i < 16384; i++) { + if (buf[i] != 1) + ASSERT_EQ(buf[i], 1, "9Kb+10b-untouched"); + } /* Test a too large grow */ memset(buf, 1, 16384); @@ -273,16 +284,93 @@ out: bpf_object__close(obj); } +static void test_xdp_adjust_frags_tail_grow_64k(void) +{ + const char *file = "./test_xdp_adjust_tail_grow.bpf.o"; + __u32 exp_size; + struct bpf_program *prog; + struct bpf_object *obj; + int err, i, prog_fd; + __u8 *buf; + LIBBPF_OPTS(bpf_test_run_opts, topts); + + obj = bpf_object__open(file); + if (libbpf_get_error(obj)) + return; + + prog = bpf_object__next_program(obj, NULL); + if (bpf_object__load(obj)) + goto out; + + prog_fd = bpf_program__fd(prog); + + buf = malloc(262144); + if (!ASSERT_OK_PTR(buf, "alloc buf 256Kb")) + goto out; + + /* Test case add 10 bytes to last frag */ + memset(buf, 1, 262144); + exp_size = 90000 + 10; + + topts.data_in = buf; + topts.data_out = buf; + topts.data_size_in = 90000; + topts.data_size_out = 262144; + err = bpf_prog_test_run_opts(prog_fd, &topts); + + ASSERT_OK(err, "90Kb+10b"); + ASSERT_EQ(topts.retval, XDP_TX, "90Kb+10b retval"); + ASSERT_EQ(topts.data_size_out, exp_size, "90Kb+10b size"); + + for (i = 0; i < 90000; i++) { + if (buf[i] != 1) + ASSERT_EQ(buf[i], 1, "90Kb+10b-old"); + } + + for (i = 90000; i < 90010; i++) { + if (buf[i] != 0) + ASSERT_EQ(buf[i], 0, "90Kb+10b-new"); + } + + for (i = 90010; i < 262144; i++) { + if (buf[i] != 1) + ASSERT_EQ(buf[i], 1, "90Kb+10b-untouched"); + } + + /* Test a too large grow */ + memset(buf, 1, 262144); + exp_size = 90001; + + topts.data_in = topts.data_out = buf; + topts.data_size_in = 90001; + topts.data_size_out = 262144; + err = bpf_prog_test_run_opts(prog_fd, &topts); + + ASSERT_OK(err, "90Kb+10b"); + ASSERT_EQ(topts.retval, XDP_DROP, "90Kb+10b retval"); + ASSERT_EQ(topts.data_size_out, exp_size, "90Kb+10b size"); + + free(buf); +out: + bpf_object__close(obj); +} + void test_xdp_adjust_tail(void) { + int page_size = getpagesize(); + if (test__start_subtest("xdp_adjust_tail_shrink")) test_xdp_adjust_tail_shrink(); if (test__start_subtest("xdp_adjust_tail_grow")) - test_xdp_adjust_tail_grow(); + test_xdp_adjust_tail_grow(page_size == 65536); if (test__start_subtest("xdp_adjust_tail_grow2")) test_xdp_adjust_tail_grow2(); if (test__start_subtest("xdp_adjust_frags_tail_shrink")) test_xdp_adjust_frags_tail_shrink(); - if (test__start_subtest("xdp_adjust_frags_tail_grow")) - test_xdp_adjust_frags_tail_grow(); + if (test__start_subtest("xdp_adjust_frags_tail_grow")) { + if (page_size == 65536) + test_xdp_adjust_frags_tail_grow_64k(); + else + test_xdp_adjust_frags_tail_grow_4k(); + } } |