[PATCH v1 bpf-next 3/8] selftests/bpf: Factor out cmp_addr

[Jordan Rife <jrife@xxxxxxxxxx>]

Factor out cmp_addr into network_helpers.c to so that it can be used by
the sock_addr_kern test program.

Signed-off-by: Jordan Rife <jrife@xxxxxxxxxx>
---
 tools/testing/selftests/bpf/network_helpers.c | 34 +++++++++++++++++++
 tools/testing/selftests/bpf/network_helpers.h |  4 +++
 .../selftests/bpf/prog_tests/sock_addr.c      | 34 -------------------
 3 files changed, 38 insertions(+), 34 deletions(-)

diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c
index 6db27a9088e97..8eae4afe3ec3d 100644
--- a/tools/testing/selftests/bpf/network_helpers.c
+++ b/tools/testing/selftests/bpf/network_helpers.c
@@ -497,3 +497,37 @@ int get_socket_local_port(int sock_fd)
 
 	return -1;
 }
+
+int cmp_addr(const struct sockaddr_storage *addr1, socklen_t addr1_len,
+	     const struct sockaddr_storage *addr2, socklen_t addr2_len,
+	     bool cmp_port)
+{
+	const struct sockaddr_in *four1, *four2;
+	const struct sockaddr_in6 *six1, *six2;
+	const struct sockaddr_un *un1, *un2;
+
+	if (addr1->ss_family != addr2->ss_family)
+		return -1;
+
+	if (addr1_len != addr2_len)
+		return -1;
+
+	if (addr1->ss_family == AF_INET) {
+		four1 = (const struct sockaddr_in *)addr1;
+		four2 = (const struct sockaddr_in *)addr2;
+		return !((four1->sin_port == four2->sin_port || !cmp_port) &&
+			 four1->sin_addr.s_addr == four2->sin_addr.s_addr);
+	} else if (addr1->ss_family == AF_INET6) {
+		six1 = (const struct sockaddr_in6 *)addr1;
+		six2 = (const struct sockaddr_in6 *)addr2;
+		return !((six1->sin6_port == six2->sin6_port || !cmp_port) &&
+			 !memcmp(&six1->sin6_addr, &six2->sin6_addr,
+				 sizeof(struct in6_addr)));
+	} else if (addr1->ss_family == AF_UNIX) {
+		un1 = (const struct sockaddr_un *)addr1;
+		un2 = (const struct sockaddr_un *)addr2;
+		return memcmp(un1, un2, addr1_len);
+	}
+
+	return -1;
+}
diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h
index 94b9be24e39bc..a4a458c858d59 100644
--- a/tools/testing/selftests/bpf/network_helpers.h
+++ b/tools/testing/selftests/bpf/network_helpers.h
@@ -61,6 +61,10 @@ int make_sockaddr(int family, const char *addr_str, __u16 port,
 		  struct sockaddr_storage *addr, socklen_t *len);
 char *ping_command(int family);
 int get_socket_local_port(int sock_fd);
+int cmp_addr(const struct sockaddr_storage *addr1, socklen_t addr1_len,
+	     const struct sockaddr_storage *addr2, socklen_t addr2_len,
+	     bool cmp_port);
+
 
 struct nstoken;
 /**
diff --git a/tools/testing/selftests/bpf/prog_tests/sock_addr.c b/tools/testing/selftests/bpf/prog_tests/sock_addr.c
index 5fd6177189915..c1db1d7e08b04 100644
--- a/tools/testing/selftests/bpf/prog_tests/sock_addr.c
+++ b/tools/testing/selftests/bpf/prog_tests/sock_addr.c
@@ -246,40 +246,6 @@ static struct sock_addr_test tests[] = {
 
 typedef int (*info_fn)(int, struct sockaddr *, socklen_t *);
 
-static int cmp_addr(const struct sockaddr_storage *addr1, socklen_t addr1_len,
-		    const struct sockaddr_storage *addr2, socklen_t addr2_len,
-		    bool cmp_port)
-{
-	const struct sockaddr_in *four1, *four2;
-	const struct sockaddr_in6 *six1, *six2;
-	const struct sockaddr_un *un1, *un2;
-
-	if (addr1->ss_family != addr2->ss_family)
-		return -1;
-
-	if (addr1_len != addr2_len)
-		return -1;
-
-	if (addr1->ss_family == AF_INET) {
-		four1 = (const struct sockaddr_in *)addr1;
-		four2 = (const struct sockaddr_in *)addr2;
-		return !((four1->sin_port == four2->sin_port || !cmp_port) &&
-			 four1->sin_addr.s_addr == four2->sin_addr.s_addr);
-	} else if (addr1->ss_family == AF_INET6) {
-		six1 = (const struct sockaddr_in6 *)addr1;
-		six2 = (const struct sockaddr_in6 *)addr2;
-		return !((six1->sin6_port == six2->sin6_port || !cmp_port) &&
-			 !memcmp(&six1->sin6_addr, &six2->sin6_addr,
-				 sizeof(struct in6_addr)));
-	} else if (addr1->ss_family == AF_UNIX) {
-		un1 = (const struct sockaddr_un *)addr1;
-		un2 = (const struct sockaddr_un *)addr2;
-		return memcmp(un1, un2, addr1_len);
-	}
-
-	return -1;
-}
-
 static int cmp_sock_addr(info_fn fn, int sock1,
 			 const struct sockaddr_storage *addr2,
 			 socklen_t addr2_len, bool cmp_port)
-- 
2.44.0.478.gd926399ef9-goog