Implement vsock socket layer

regression/apps/Makefile

@@ -31,6 +31,7 @@ TEST_APPS := \
 	pthread \
 	pty \
 	signal_c \
+	vsock \
 
 # The C head and source files of all the apps, excluding the downloaded mongoose files
 C_SOURCES := $(shell find . -type f \( -name "*.c" -or -name "*.h" \) ! -name "mongoose.c" ! -name "mongoose.h")

regression/apps/scripts/run_vsock_test.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+VSOCK_DIR=/regression/vsock
+cd ${VSOCK_DIR}
+
+echo "Start vsock test......"
+# ./vsock_server
+./vsock_client
+echo "Vsock test passed."

regression/apps/vsock/Makefile

@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: MPL-2.0
+
+include ../test_common.mk
+
+EXTRA_C_FLAGS := 

regression/apps/vsock/vsock_client.c

@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: MPL-2.0
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <linux/vm_sockets.h>
+#include <unistd.h>
+#include <string.h>
+
+#define PORT 1234
+
+int main()
+{
+	int sock;
+	char *hello = "Hello from client";
+	char buffer[1024] = { 0 };
+	struct sockaddr_vm serv_addr;
+
+	if ((sock = socket(AF_VSOCK, SOCK_STREAM, 0)) < 0) {
+		printf("\n Socket creation error\n");
+		return -1;
+	}
+	printf("\n Create socket successfully!\n");
+	serv_addr.svm_family = AF_VSOCK;
+	serv_addr.svm_cid = VMADDR_CID_HOST;
+	serv_addr.svm_port = PORT;
+
+	if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) <
+	    0) {
+		printf("\nConnection Failed \n");
+		return -1;
+	}
+	printf("\n Socket connect successfully!\n");
+
+	// Send message to the server and receive the reply
+	if (send(sock, hello, strlen(hello), 0) < 0) {
+		printf("\nSend Failed\n");
+		return -1;
+	}
+	printf("Hello message sent\n");
+	if (read(sock, buffer, 1024) < 0) {
+		printf("\nRead Failed\n");
+		return -1;
+	}
+	printf("Server: %s\n", buffer);
+	return 0;
+}

regression/apps/vsock/vsock_server.c

@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: MPL-2.0
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <linux/vm_sockets.h>
+#include <unistd.h>
+#include <string.h>
+
+#define CID 3
+#define PORT 4321
+
+int main()
+{
+	int sock, new_sock;
+	char *hello = "Hello from client";
+	char buffer[1024] = { 0 };
+	struct sockaddr_vm serv_addr, client_addr;
+	int addrlen = sizeof(client_addr);
+
+	if ((sock = socket(AF_VSOCK, SOCK_STREAM, 0)) < 0) {
+		printf("\n Socket creation error\n");
+		return -1;
+	}
+	printf("\nCreate socket successfully\n");
+	serv_addr.svm_family = AF_VSOCK;
+	serv_addr.svm_cid = CID;
+	serv_addr.svm_port = PORT;
+
+	if (bind(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
+		printf("\nBind Failed \n");
+		return -1;
+	}
+	printf("\nBind socket successfully\n");
+
+	if (listen(sock, 3) < 0) {
+		printf("\nListen Failed\n");
+		return -1;
+	}
+	printf("\nListen socket successfully\n");
+
+	if ((new_sock = accept(sock, (struct sockaddr *)&client_addr,
+			       (socklen_t *)&addrlen)) < 0) {
+		printf("\nAccept Failed\n");
+		return -1;
+	}
+	printf("\nAccept socket successfully\n");
+
+	// Send message to the server and receive the reply
+	if (read(new_sock, buffer, 1024) < 0) {
+		printf("\nRead Failed\n");
+		return -1;
+	}
+	printf("Client: %s\n", buffer);
+	if (send(new_sock, hello, strlen(hello), 0) < 0) {
+		printf("\nSend Failed\n");
+		return -1;
+	}
+	printf("Hello message sent\n");
+	return 0;
+}