[PATCH bpf-next 13/14] selftests/bpf: Use start_server_* in test_tcp_check_syncookie

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From: Geliang Tang <tanggeliang@xxxxxxxxxx>

Include network_helpers.h in test_tcp_check_syncookie_user.c, use
public helpers start_server_addr() and start_server_setsockopt() in it
instead of the local defined function start_server(). This can avoid
duplicate code.

In order to use functions defined in network_helpers.c, Makefile needs
to be updated to avoid compilation errors.

Signed-off-by: Geliang Tang <tanggeliang@xxxxxxxxxx>
---
 tools/testing/selftests/bpf/Makefile          |  1 +
 .../bpf/test_tcp_check_syncookie_user.c       | 50 ++++---------------
 2 files changed, 12 insertions(+), 39 deletions(-)

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 60c9edc04f73..4f42dd241c38 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -309,6 +309,7 @@ $(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
 $(OUTPUT)/test_maps: $(TESTING_HELPERS)
 $(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS)
 $(OUTPUT)/xsk.o: $(BPFOBJ)
+$(OUTPUT)/test_tcp_check_syncookie_user: $(NETWORK_HELPERS)
 
 BPFTOOL ?= $(DEFAULT_BPFTOOL)
 $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)    \
diff --git a/tools/testing/selftests/bpf/test_tcp_check_syncookie_user.c b/tools/testing/selftests/bpf/test_tcp_check_syncookie_user.c
index 32df93747095..e6ad4895d2b3 100644
--- a/tools/testing/selftests/bpf/test_tcp_check_syncookie_user.c
+++ b/tools/testing/selftests/bpf/test_tcp_check_syncookie_user.c
@@ -16,43 +16,13 @@
 #include <bpf/libbpf.h>
 
 #include "cgroup_helpers.h"
+#include "network_helpers.h"
 
-static int start_server(const struct sockaddr *addr, socklen_t len, bool dual)
+static int setsockopt_mode(int fd, int dual)
 {
 	int mode = !dual;
-	int fd;
 
-	fd = socket(addr->sa_family, SOCK_STREAM, 0);
-	if (fd == -1) {
-		log_err("Failed to create server socket");
-		goto out;
-	}
-
-	if (addr->sa_family == AF_INET6) {
-		if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&mode,
-			       sizeof(mode)) == -1) {
-			log_err("Failed to set the dual-stack mode");
-			goto close_out;
-		}
-	}
-
-	if (bind(fd, addr, len) == -1) {
-		log_err("Failed to bind server socket");
-		goto close_out;
-	}
-
-	if (listen(fd, 128) == -1) {
-		log_err("Failed to listen on server socket");
-		goto close_out;
-	}
-
-	goto out;
-
-close_out:
-	close(fd);
-	fd = -1;
-out:
-	return fd;
+	return setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&mode, sizeof(mode));
 }
 
 static int connect_to_server(const struct sockaddr *addr, socklen_t len)
@@ -259,18 +229,20 @@ int main(int argc, char **argv)
 	addr6dual.sin6_addr = in6addr_any;
 	addr6dual.sin6_port = 0;
 
-	server = start_server((const struct sockaddr *)&addr4, sizeof(addr4),
-			      false);
+	server = start_server_addr((const struct sockaddr *)&addr4,
+				   sizeof(addr4), SOCK_STREAM);
 	if (server == -1 || !get_port(server, &addr4.sin_port))
 		goto err;
 
-	server_v6 = start_server((const struct sockaddr *)&addr6,
-				 sizeof(addr6), false);
+	server_v6 = start_server_setsockopt((const struct sockaddr *)&addr6,
+					    sizeof(addr6), SOCK_STREAM,
+					    (void *)setsockopt_mode, false);
 	if (server_v6 == -1 || !get_port(server_v6, &addr6.sin6_port))
 		goto err;
 
-	server_dual = start_server((const struct sockaddr *)&addr6dual,
-				   sizeof(addr6dual), true);
+	server_dual = start_server_setsockopt((const struct sockaddr *)&addr6dual,
+					      sizeof(addr6dual), SOCK_STREAM,
+					      (void *)setsockopt_mode, true);
 	if (server_dual == -1 || !get_port(server_dual, &addr4dual.sin_port))
 		goto err;
 
-- 
2.40.1





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