[PATCH bpf-next v4 4/6] selftests/bpf: Use start_server_str in bpf_tcp_ca

From: Geliang Tang tanggeliang@kylinos.cn

This patch uses new helper start_server_str() in do_test() in bpf_tcp_ca.c to accept a struct network_helper_opts argument instead of using start_server() and settcpca(). Then change the type of the first paramenter of do_test() into a struct network_helper_opts one.

Define its own cb_opts and opts for each test, set its own cc name into cb_opts.cc, and cc_cb() into post_socket_cb callback, then pass it to do_test().

opts->cb_opts needs to be passed to post_socket_cb() in __start_server().

Signed-off-by: Geliang Tang tanggeliang@kylinos.cn --- tools/testing/selftests/bpf/network_helpers.c | 3 +- .../selftests/bpf/prog_tests/bpf_tcp_ca.c | 66 +++++++++++++++---- 2 files changed, 57 insertions(+), 12 deletions(-)

diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c index 8502917b6c7b..e20caef06aae 100644 --- a/tools/testing/selftests/bpf/network_helpers.c +++ b/tools/testing/selftests/bpf/network_helpers.c @@ -94,7 +94,8 @@ static int __start_server(int type, const struct sockaddr *addr, socklen_t addrl if (settimeo(fd, opts->timeout_ms)) goto error_close;

- if (opts->post_socket_cb && opts->post_socket_cb(fd, NULL)) { + if (opts->post_socket_cb && + opts->post_socket_cb(fd, opts->cb_opts)) { log_err("Failed to call post_socket_cb"); goto error_close; } diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c index c9dd2a3d3218..123fcd5a0af6 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c @@ -38,12 +38,14 @@ static int settcpca(int fd, const char *tcp_ca) return 0; }

-static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map) +static void do_test(const struct network_helper_opts *opts, + const struct bpf_map *sk_stg_map) { + struct cb_opts *co = (struct cb_opts *)opts->cb_opts; int lfd = -1, fd = -1; int err;

- lfd = start_server(AF_INET6, SOCK_STREAM, NULL, 0, 0); + lfd = start_server_str(AF_INET6, SOCK_STREAM, NULL, 0, opts); if (!ASSERT_NEQ(lfd, -1, "socket")) return;

@@ -53,7 +55,7 @@ static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map) return; }

- if (settcpca(lfd, tcp_ca) || settcpca(fd, tcp_ca)) + if (settcpca(fd, co->cc)) goto done;

if (sk_stg_map) { @@ -95,6 +97,13 @@ static int cc_cb(int fd, void *opts)

static void test_cubic(void) { + struct cb_opts cb_opts = { + .cc = "bpf_cubic", + }; + struct network_helper_opts opts = { + .post_socket_cb = cc_cb, + .cb_opts = &cb_opts, + }; struct bpf_cubic *cubic_skel; struct bpf_link *link;

@@ -108,7 +117,7 @@ static void test_cubic(void) return; }

- do_test("bpf_cubic", NULL); + do_test(&opts, NULL);

ASSERT_EQ(cubic_skel->bss->bpf_cubic_acked_called, 1, "pkts_acked called");

@@ -118,6 +127,13 @@ static void test_cubic(void)

static void test_dctcp(void) { + struct cb_opts cb_opts = { + .cc = "bpf_dctcp", + }; + struct network_helper_opts opts = { + .post_socket_cb = cc_cb, + .cb_opts = &cb_opts, + }; struct bpf_dctcp *dctcp_skel; struct bpf_link *link;

@@ -131,7 +147,7 @@ static void test_dctcp(void) return; }

- do_test("bpf_dctcp", dctcp_skel->maps.sk_stg_map); + do_test(&opts, dctcp_skel->maps.sk_stg_map); ASSERT_EQ(dctcp_skel->bss->stg_result, expected_stg, "stg_result");

bpf_link__destroy(link); @@ -313,6 +329,13 @@ static void test_unsupp_cong_op(void)

static void test_update_ca(void) { + struct cb_opts cb_opts = { + .cc = "tcp_ca_update", + }; + struct network_helper_opts opts = { + .post_socket_cb = cc_cb, + .cb_opts = &cb_opts, + }; struct tcp_ca_update *skel; struct bpf_link *link; int saved_ca1_cnt; @@ -325,14 +348,14 @@ static void test_update_ca(void) link = bpf_map__attach_struct_ops(skel->maps.ca_update_1); ASSERT_OK_PTR(link, "attach_struct_ops");

- do_test("tcp_ca_update", NULL); + do_test(&opts, NULL); saved_ca1_cnt = skel->bss->ca1_cnt; ASSERT_GT(saved_ca1_cnt, 0, "ca1_ca1_cnt");

err = bpf_link__update_map(link, skel->maps.ca_update_2); ASSERT_OK(err, "update_map");

- do_test("tcp_ca_update", NULL); + do_test(&opts, NULL); ASSERT_EQ(skel->bss->ca1_cnt, saved_ca1_cnt, "ca2_ca1_cnt"); ASSERT_GT(skel->bss->ca2_cnt, 0, "ca2_ca2_cnt");

@@ -342,6 +365,13 @@ static void test_update_ca(void)

static void test_update_wrong(void) { + struct cb_opts cb_opts = { + .cc = "tcp_ca_update", + }; + struct network_helper_opts opts = { + .post_socket_cb = cc_cb, + .cb_opts = &cb_opts, + }; struct tcp_ca_update *skel; struct bpf_link *link; int saved_ca1_cnt; @@ -354,14 +384,14 @@ static void test_update_wrong(void) link = bpf_map__attach_struct_ops(skel->maps.ca_update_1); ASSERT_OK_PTR(link, "attach_struct_ops");

- do_test("tcp_ca_update", NULL); + do_test(&opts, NULL); saved_ca1_cnt = skel->bss->ca1_cnt; ASSERT_GT(saved_ca1_cnt, 0, "ca1_ca1_cnt");

err = bpf_link__update_map(link, skel->maps.ca_wrong); ASSERT_ERR(err, "update_map");

- do_test("tcp_ca_update", NULL); + do_test(&opts, NULL); ASSERT_GT(skel->bss->ca1_cnt, saved_ca1_cnt, "ca2_ca1_cnt");

bpf_link__destroy(link); @@ -370,6 +400,13 @@ static void test_update_wrong(void)

static void test_mixed_links(void) { + struct cb_opts cb_opts = { + .cc = "tcp_ca_update", + }; + struct network_helper_opts opts = { + .post_socket_cb = cc_cb, + .cb_opts = &cb_opts, + }; struct tcp_ca_update *skel; struct bpf_link *link, *link_nl; int err; @@ -384,7 +421,7 @@ static void test_mixed_links(void) link = bpf_map__attach_struct_ops(skel->maps.ca_update_1); ASSERT_OK_PTR(link, "attach_struct_ops");

- do_test("tcp_ca_update", NULL); + do_test(&opts, NULL); ASSERT_GT(skel->bss->ca1_cnt, 0, "ca1_ca1_cnt");

err = bpf_link__update_map(link, skel->maps.ca_no_link); @@ -471,6 +508,13 @@ static void test_tcp_ca_kfunc(void)

static void test_cc_cubic(void) { + struct cb_opts cb_opts = { + .cc = "bpf_cc_cubic", + }; + struct network_helper_opts opts = { + .post_socket_cb = cc_cb, + .cb_opts = &cb_opts, + }; struct bpf_cc_cubic *cc_cubic_skel; struct bpf_link *link;

@@ -484,7 +528,7 @@ static void test_cc_cubic(void) return; }

- do_test("bpf_cc_cubic", NULL); + do_test(&opts, NULL);

bpf_link__destroy(link); bpf_cc_cubic__destroy(cc_cubic_skel);