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[bpf-next,v2,5/6] bpf: selftests: Support custom type and proto for client sockets

Message ID 7729886a0e1ae0e07850840a7cd54530b26318d8.1688685338.git.dxu@dxuuu.xyz
State Accepted
Commit e15a22095608ae5e1da5892da739d83b49b3bba5
Headers show
Series Support defragmenting IPv(4|6) packets in BPF | expand

Commit Message

Daniel Xu July 6, 2023, 11:25 p.m. UTC 
Extend connect_to_fd_opts() to take optional type and protocol
parameters for the client socket. These parameters are useful when
opening a raw socket to send IP fragments.

Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
---
 tools/testing/selftests/bpf/network_helpers.c | 21 +++++++++++++------
 tools/testing/selftests/bpf/network_helpers.h |  2 ++
 2 files changed, 17 insertions(+), 6 deletions(-)
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Patch

diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c
index d5c78c08903b..910d5d0470e6 100644
--- a/tools/testing/selftests/bpf/network_helpers.c
+++ b/tools/testing/selftests/bpf/network_helpers.c
@@ -270,14 +270,23 @@  int connect_to_fd_opts(int server_fd, const struct network_helper_opts *opts)
 		opts = &default_opts;
 
 	optlen = sizeof(type);
-	if (getsockopt(server_fd, SOL_SOCKET, SO_TYPE, &type, &optlen)) {
-		log_err("getsockopt(SOL_TYPE)");
-		return -1;
+
+	if (opts->type) {
+		type = opts->type;
+	} else {
+		if (getsockopt(server_fd, SOL_SOCKET, SO_TYPE, &type, &optlen)) {
+			log_err("getsockopt(SOL_TYPE)");
+			return -1;
+		}
 	}
 
-	if (getsockopt(server_fd, SOL_SOCKET, SO_PROTOCOL, &protocol, &optlen)) {
-		log_err("getsockopt(SOL_PROTOCOL)");
-		return -1;
+	if (opts->proto) {
+		protocol = opts->proto;
+	} else {
+		if (getsockopt(server_fd, SOL_SOCKET, SO_PROTOCOL, &protocol, &optlen)) {
+			log_err("getsockopt(SOL_PROTOCOL)");
+			return -1;
+		}
 	}
 
 	addrlen = sizeof(addr);
diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h
index 87894dc984dd..5eccc67d1a99 100644
--- a/tools/testing/selftests/bpf/network_helpers.h
+++ b/tools/testing/selftests/bpf/network_helpers.h
@@ -22,6 +22,8 @@  struct network_helper_opts {
 	int timeout_ms;
 	bool must_fail;
 	bool noconnect;
+	int type;
+	int proto;
 };
 
 /* ipv4 test vector */