selftests/bpf: Migrate WILDCARD_IP test

Move wildcard IP sendmsg test case out of bpf/test_sock_addr.c into
prog_tests/sock_addr.c.

Signed-off-by: Jordan Rife <jrife@google.com>
Link: https://lore.kernel.org/r/20240510190246.3247730-7-jrife@google.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

Author: jrife

tools/testing/selftests/bpf/prog_tests/sock_addr.c

@@ -40,6 +40,7 @@
 #define SERV6_V4MAPPED_IP       "::ffff:192.168.0.4"
 #define SRC6_IP                 "::1"
 #define SRC6_REWRITE_IP         TEST_IPV6
+#define WILDCARD6_IP            "::"
 #define SERV6_PORT              6060
 #define SERV6_REWRITE_PORT      6666
 
@@ -443,6 +444,7 @@ BPF_SKEL_FUNCS(connect6_prog, connect_v6_prog);
 BPF_SKEL_FUNCS(connect_unix_prog, connect_unix_prog);
 BPF_SKEL_FUNCS(sendmsg4_prog, sendmsg_v4_prog);
 BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_prog);
+BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_preserve_dst_prog);
 BPF_SKEL_FUNCS(sendmsg_unix_prog, sendmsg_unix_prog);
 BPF_SKEL_FUNCS(recvmsg4_prog, recvmsg4_prog);
 BPF_SKEL_FUNCS(recvmsg6_prog, recvmsg6_prog);
@@ -780,6 +782,22 @@ static struct sock_addr_test tests[] = {
 		SRC6_REWRITE_IP,
 		SUCCESS,
 	},
+	{
+		SOCK_ADDR_TEST_SENDMSG,
+		"sendmsg6: sendmsg [::] (BSD'ism) (dgram)",
+		sendmsg_v6_preserve_dst_prog_load,
+		sendmsg_v6_preserve_dst_prog_destroy,
+		BPF_CGROUP_UDP6_SENDMSG,
+		&user_ops,
+		AF_INET6,
+		SOCK_DGRAM,
+		WILDCARD6_IP,
+		SERV6_PORT,
+		SERV6_REWRITE_IP,
+		SERV6_PORT,
+		SRC6_IP,
+		SUCCESS,
+	},
 	{
 		SOCK_ADDR_TEST_SENDMSG,
 		"sendmsg_unix: sendmsg (dgram)",
@@ -830,6 +848,22 @@ static struct sock_addr_test tests[] = {
 		SRC6_REWRITE_IP,
 		SUCCESS,
 	},
+	{
+		SOCK_ADDR_TEST_SENDMSG,
+		"sendmsg6: sock_sendmsg [::] (BSD'ism) (dgram)",
+		sendmsg_v6_preserve_dst_prog_load,
+		sendmsg_v6_preserve_dst_prog_destroy,
+		BPF_CGROUP_UDP6_SENDMSG,
+		&kern_ops_sock_sendmsg,
+		AF_INET6,
+		SOCK_DGRAM,
+		WILDCARD6_IP,
+		SERV6_PORT,
+		SERV6_REWRITE_IP,
+		SERV6_PORT,
+		SRC6_IP,
+		SUCCESS,
+	},
 	{
 		SOCK_ADDR_TEST_SENDMSG,
 		"sendmsg_unix: sock_sendmsg (dgram)",
@@ -880,6 +914,22 @@ static struct sock_addr_test tests[] = {
 		SRC6_REWRITE_IP,
 		SUCCESS,
 	},
+	{
+		SOCK_ADDR_TEST_SENDMSG,
+		"sendmsg6: kernel_sendmsg [::] (BSD'ism) (dgram)",
+		sendmsg_v6_preserve_dst_prog_load,
+		sendmsg_v6_preserve_dst_prog_destroy,
+		BPF_CGROUP_UDP6_SENDMSG,
+		&kern_ops_kernel_sendmsg,
+		AF_INET6,
+		SOCK_DGRAM,
+		WILDCARD6_IP,
+		SERV6_PORT,
+		SERV6_REWRITE_IP,
+		SERV6_PORT,
+		SRC6_IP,
+		SUCCESS,
+	},
 	{
 		SOCK_ADDR_TEST_SENDMSG,
 		"sendmsg_unix: sock_sendmsg (dgram)",

tools/testing/selftests/bpf/progs/sendmsg6_prog.c

@@ -59,4 +59,10 @@ int sendmsg_v6_prog(struct bpf_sock_addr *ctx)
 	return 1;
 }
 
+SEC("cgroup/sendmsg6")
+int sendmsg_v6_preserve_dst_prog(struct bpf_sock_addr *ctx)
+{
+	return 1;
+}
+
 char _license[] SEC("license") = "GPL";

tools/testing/selftests/bpf/test_sock_addr.c

@@ -92,7 +92,6 @@ static int bind4_prog_load(const struct sock_addr_test *test);
 static int bind6_prog_load(const struct sock_addr_test *test);
 static int connect4_prog_load(const struct sock_addr_test *test);
 static int connect6_prog_load(const struct sock_addr_test *test);
-static int sendmsg_allow_prog_load(const struct sock_addr_test *test);
 static int sendmsg_deny_prog_load(const struct sock_addr_test *test);
 static int sendmsg4_rw_asm_prog_load(const struct sock_addr_test *test);
 static int sendmsg6_rw_asm_prog_load(const struct sock_addr_test *test);
@@ -343,20 +342,6 @@ static struct sock_addr_test tests[] = {
 		SRC6_REWRITE_IP,
 		SUCCESS,
 	},
-	{
-		"sendmsg6: preserve dst IP = [::] (BSD'ism)",
-		sendmsg_allow_prog_load,
-		BPF_CGROUP_UDP6_SENDMSG,
-		BPF_CGROUP_UDP6_SENDMSG,
-		AF_INET6,
-		SOCK_DGRAM,
-		WILDCARD6_IP,
-		SERV6_PORT,
-		SERV6_REWRITE_IP,
-		SERV6_PORT,
-		SRC6_IP,
-		SUCCESS,
-	},
 	{
 		"sendmsg6: deny call",
 		sendmsg_deny_prog_load,
@@ -457,11 +442,6 @@ static int xmsg_ret_only_prog_load(const struct sock_addr_test *test,
 	return load_insns(test, insns, ARRAY_SIZE(insns));
 }
 
-static int sendmsg_allow_prog_load(const struct sock_addr_test *test)
-{
-	return xmsg_ret_only_prog_load(test, /*rc*/ 1);
-}
-
 static int sendmsg_deny_prog_load(const struct sock_addr_test *test)
 {
 	return xmsg_ret_only_prog_load(test, /*rc*/ 0);