diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/skb_ctx.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/skb_ctx.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/skb_ctx.c b/tools/testing/selftests/bpf/prog_tests/skb_ctx.c new file mode 100644 index 0000000000..33f950e2da --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/skb_ctx.c @@ -0,0 +1,91 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <test_progs.h> +#include <network_helpers.h> + +void test_skb_ctx(void) +{ + struct __sk_buff skb = { + .cb[0] = 1, + .cb[1] = 2, + .cb[2] = 3, + .cb[3] = 4, + .cb[4] = 5, + .priority = 6, + .ingress_ifindex = 11, + .ifindex = 1, + .tstamp = 7, + .wire_len = 100, + .gso_segs = 8, + .mark = 9, + .gso_size = 10, + .hwtstamp = 11, + }; + LIBBPF_OPTS(bpf_test_run_opts, tattr, + .data_in = &pkt_v4, + .data_size_in = sizeof(pkt_v4), + .ctx_in = &skb, + .ctx_size_in = sizeof(skb), + .ctx_out = &skb, + .ctx_size_out = sizeof(skb), + ); + struct bpf_object *obj; + int err, prog_fd, i; + + err = bpf_prog_test_load("./test_skb_ctx.bpf.o", BPF_PROG_TYPE_SCHED_CLS, + &obj, &prog_fd); + if (!ASSERT_OK(err, "load")) + return; + + /* ctx_in != NULL, ctx_size_in == 0 */ + + tattr.ctx_size_in = 0; + err = bpf_prog_test_run_opts(prog_fd, &tattr); + ASSERT_NEQ(err, 0, "ctx_size_in"); + tattr.ctx_size_in = sizeof(skb); + + /* ctx_out != NULL, ctx_size_out == 0 */ + + tattr.ctx_size_out = 0; + err = bpf_prog_test_run_opts(prog_fd, &tattr); + ASSERT_NEQ(err, 0, "ctx_size_out"); + tattr.ctx_size_out = sizeof(skb); + + /* non-zero [len, tc_index] fields should be rejected*/ + + skb.len = 1; + err = bpf_prog_test_run_opts(prog_fd, &tattr); + ASSERT_NEQ(err, 0, "len"); + skb.len = 0; + + skb.tc_index = 1; + err = bpf_prog_test_run_opts(prog_fd, &tattr); + ASSERT_NEQ(err, 0, "tc_index"); + skb.tc_index = 0; + + /* non-zero [hash, sk] fields should be rejected */ + + skb.hash = 1; + err = bpf_prog_test_run_opts(prog_fd, &tattr); + ASSERT_NEQ(err, 0, "hash"); + skb.hash = 0; + + skb.sk = (struct bpf_sock *)1; + err = bpf_prog_test_run_opts(prog_fd, &tattr); + ASSERT_NEQ(err, 0, "sk"); + skb.sk = 0; + + err = bpf_prog_test_run_opts(prog_fd, &tattr); + ASSERT_OK(err, "test_run"); + ASSERT_OK(tattr.retval, "test_run retval"); + ASSERT_EQ(tattr.ctx_size_out, sizeof(skb), "ctx_size_out"); + + for (i = 0; i < 5; i++) + ASSERT_EQ(skb.cb[i], i + 2, "ctx_out_cb"); + ASSERT_EQ(skb.priority, 7, "ctx_out_priority"); + ASSERT_EQ(skb.ifindex, 1, "ctx_out_ifindex"); + ASSERT_EQ(skb.ingress_ifindex, 11, "ctx_out_ingress_ifindex"); + ASSERT_EQ(skb.tstamp, 8, "ctx_out_tstamp"); + ASSERT_EQ(skb.mark, 10, "ctx_out_mark"); + + bpf_object__close(obj); +} |