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[bpf-next,4/4] selftests/bpf: Add post_connect_cb callback

Message ID 2da67a207bfd53057db219e13bd68a7ee82d5d30.1715396405.git.tanggeliang@kylinos.cn (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series use network helpers, part 5 | expand

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Commit Message

Geliang Tang May 11, 2024, 3:16 a.m. UTC 
From: Geliang Tang <tanggeliang@kylinos.cn>

For getting rid of the second parameter of do_test(), this patch adds a
new callback post_connect_cb in struct network_helper_opts, it will be
invoked after connect_fd_to_addr() in connect_to_fd_opts().

Then define a dctcp dedicated post_connect_cb callback, invoking
bpf_map_lookup_elem() in it, named stg_post_connect_cb() and set it in
test_dctcp().

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
---
 tools/testing/selftests/bpf/network_helpers.c |  6 ++-
 tools/testing/selftests/bpf/network_helpers.h |  1 +
 .../selftests/bpf/prog_tests/bpf_tcp_ca.c     | 41 ++++++++++---------
 3 files changed, 27 insertions(+), 21 deletions(-)

Comments

Yujie Liu May 15, 2024, 1:32 a.m. UTC | #1 
Hi Geliang,

kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Geliang-Tang/selftests-bpf-Use-post_socket_cb-in-connect_to_fd_opts/20240511-111755
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/2da67a207bfd53057db219e13bd68a7ee82d5d30.1715396405.git.tanggeliang%40kylinos.cn
patch subject: [PATCH bpf-next 4/4] selftests/bpf: Add post_connect_cb callback
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <yujie.liu@intel.com>
| Closes: https://lore.kernel.org/r/202405141220.s3qJcZc4-lkp@intel.com/

All errors (new ones prefixed by >>):

>> tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c:500:26: error: too many arguments to function call, expected single argument 'opts', have 2 arguments
     500 |         do_test("bpf_cc_cubic", NULL);
         |         ~~~~~~~                 ^~~~
   lib/clang/18/include/__stddef_null.h:26:14: note: expanded from macro 'NULL'
      26 | #define NULL ((void*)0)
         |              ^~~~~~~~~~
   tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c:37:13: note: 'do_test' declared here
      37 | static void do_test(const struct network_helper_opts *opts)
         |             ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 error generated.


vim +/opts +500 tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c

5da7fb04902b0f Martin KaFai Lau 2024-03-22  484  
96c3490d6423b7 Miao Xu          2024-05-01  485  static void test_cc_cubic(void)
96c3490d6423b7 Miao Xu          2024-05-01  486  {
96c3490d6423b7 Miao Xu          2024-05-01  487  	struct bpf_cc_cubic *cc_cubic_skel;
96c3490d6423b7 Miao Xu          2024-05-01  488  	struct bpf_link *link;
96c3490d6423b7 Miao Xu          2024-05-01  489  
96c3490d6423b7 Miao Xu          2024-05-01  490  	cc_cubic_skel = bpf_cc_cubic__open_and_load();
96c3490d6423b7 Miao Xu          2024-05-01  491  	if (!ASSERT_OK_PTR(cc_cubic_skel, "bpf_cc_cubic__open_and_load"))
96c3490d6423b7 Miao Xu          2024-05-01  492  		return;
96c3490d6423b7 Miao Xu          2024-05-01  493  
96c3490d6423b7 Miao Xu          2024-05-01  494  	link = bpf_map__attach_struct_ops(cc_cubic_skel->maps.cc_cubic);
96c3490d6423b7 Miao Xu          2024-05-01  495  	if (!ASSERT_OK_PTR(link, "bpf_map__attach_struct_ops")) {
96c3490d6423b7 Miao Xu          2024-05-01  496  		bpf_cc_cubic__destroy(cc_cubic_skel);
96c3490d6423b7 Miao Xu          2024-05-01  497  		return;
96c3490d6423b7 Miao Xu          2024-05-01  498  	}
96c3490d6423b7 Miao Xu          2024-05-01  499  
96c3490d6423b7 Miao Xu          2024-05-01 @500  	do_test("bpf_cc_cubic", NULL);
96c3490d6423b7 Miao Xu          2024-05-01  501  
96c3490d6423b7 Miao Xu          2024-05-01  502  	bpf_link__destroy(link);
96c3490d6423b7 Miao Xu          2024-05-01  503  	bpf_cc_cubic__destroy(cc_cubic_skel);
96c3490d6423b7 Miao Xu          2024-05-01  504  }
96c3490d6423b7 Miao Xu          2024-05-01  505
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c
index 6864af665508..5636488dfb42 100644
--- a/tools/testing/selftests/bpf/network_helpers.c
+++ b/tools/testing/selftests/bpf/network_helpers.c
@@ -342,10 +342,14 @@  int connect_to_fd_opts(int server_fd, const struct network_helper_opts *opts)
 	    opts->post_socket_cb(fd, &opts->cb_opts))
 		goto error_close;
 
-	if (!opts->noconnect)
+	if (!opts->noconnect) {
 		if (connect_fd_to_addr(fd, &addr, addrlen, opts->must_fail))
 			goto error_close;
 
+		if (opts->post_connect_cb && opts->post_connect_cb(fd, &opts->cb_opts))
+			goto error_close;
+	}
+
 	return fd;
 
 error_close:
diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h
index 62dd40095cf2..0c8859651e7a 100644
--- a/tools/testing/selftests/bpf/network_helpers.h
+++ b/tools/testing/selftests/bpf/network_helpers.h
@@ -33,6 +33,7 @@  struct network_helper_opts {
 	int type;
 	int proto;
 	int (*post_socket_cb)(int fd, const struct post_socket_opts *opts);
+	int (*post_connect_cb)(int fd, const struct post_socket_opts *opts);
 	struct post_socket_opts cb_opts;
 };
 
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 bca30c32b819..0801b0c39cfe 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
@@ -33,13 +33,11 @@  static int settcpca(int fd, const char *tcp_ca)
 	return 0;
 }
 
-static void do_test(const struct network_helper_opts *opts,
-		    const struct bpf_map *sk_stg_map)
+static void do_test(const struct network_helper_opts *opts)
 {
 	struct sockaddr_storage addr;
 	int lfd = -1, fd = -1;
 	socklen_t addrlen;
-	int err;
 
 	if (make_sockaddr(AF_INET6, NULL, 0, &addr, &addrlen))
 		return;
@@ -53,16 +51,6 @@  static void do_test(const struct network_helper_opts *opts,
 	if (!ASSERT_NEQ(fd, -1, "connect_to_fd_opts"))
 		goto done;
 
-	if (sk_stg_map) {
-		int tmp_stg;
-
-		err = bpf_map_lookup_elem(bpf_map__fd(sk_stg_map), &fd,
-					  &tmp_stg);
-		if (!ASSERT_ERR(err, "bpf_map_lookup_elem(sk_stg_map)") ||
-				!ASSERT_EQ(errno, ENOENT, "bpf_map_lookup_elem(sk_stg_map)"))
-			goto done;
-	}
-
 	ASSERT_OK(send_recv_data(lfd, fd, total_bytes), "send_recv_data");
 
 done:
@@ -95,7 +83,7 @@  static void test_cubic(void)
 		return;
 	}
 
-	do_test(&opts, NULL);
+	do_test(&opts);
 
 	ASSERT_EQ(cubic_skel->bss->bpf_cubic_acked_called, 1, "pkts_acked called");
 
@@ -113,11 +101,24 @@  static int stg_post_socket_cb(int fd, const struct post_socket_opts *opts)
 	return bpf_map_update_elem(opts->map_fd, &fd, &expected_stg, BPF_NOEXIST);
 }
 
+static int stg_post_connect_cb(int fd, const struct post_socket_opts *opts)
+{
+	int tmp_stg;
+	int err;
+
+	err = bpf_map_lookup_elem(opts->map_fd, &fd, &tmp_stg);
+	if (!ASSERT_ERR(err, "bpf_map_lookup_elem(sk_stg_map)") ||
+			!ASSERT_EQ(errno, ENOENT, "bpf_map_lookup_elem(sk_stg_map)"))
+		return err;
+	return 0;
+}
+
 static void test_dctcp(void)
 {
 	struct network_helper_opts opts = {
 		.cb_opts.cc = "bpf_dctcp",
 		.post_socket_cb = stg_post_socket_cb,
+		.post_connect_cb = stg_post_connect_cb,
 	};
 	struct bpf_dctcp *dctcp_skel;
 	struct bpf_link *link;
@@ -133,7 +134,7 @@  static void test_dctcp(void)
 	}
 
 	opts.cb_opts.map_fd = bpf_map__fd(dctcp_skel->maps.sk_stg_map);
-	do_test(&opts, dctcp_skel->maps.sk_stg_map);
+	do_test(&opts);
 	ASSERT_EQ(dctcp_skel->bss->stg_result, expected_stg, "stg_result");
 
 	bpf_link__destroy(link);
@@ -328,14 +329,14 @@  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(&opts, NULL);
+	do_test(&opts);
 	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(&opts, NULL);
+	do_test(&opts);
 	ASSERT_EQ(skel->bss->ca1_cnt, saved_ca1_cnt, "ca2_ca1_cnt");
 	ASSERT_GT(skel->bss->ca2_cnt, 0, "ca2_ca2_cnt");
 
@@ -361,14 +362,14 @@  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(&opts, NULL);
+	do_test(&opts);
 	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(&opts, NULL);
+	do_test(&opts);
 	ASSERT_GT(skel->bss->ca1_cnt, saved_ca1_cnt, "ca2_ca1_cnt");
 
 	bpf_link__destroy(link);
@@ -395,7 +396,7 @@  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(&opts, NULL);
+	do_test(&opts);
 	ASSERT_GT(skel->bss->ca1_cnt, 0, "ca1_ca1_cnt");
 
 	err = bpf_link__update_map(link, skel->maps.ca_no_link);