Merging upstream version 6.7.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

11 files changed, 1436 insertions, 222 deletions

diff --git a/tools/testing/vsock/.gitignore b/tools/testing/vsock/.gitignore
index a8adcfdc29..d9f798713c 100644
--- a/tools/testing/vsock/.gitignore
+++ b/tools/testing/vsock/.gitignore
@@ -3,3 +3,4 @@
 vsock_test
 vsock_diag_test
 vsock_perf
+vsock_uring_test
diff --git a/tools/testing/vsock/Makefile b/tools/testing/vsock/Makefile
index 21a98ba565..a7f56a09ca 100644
--- a/tools/testing/vsock/Makefile
+++ b/tools/testing/vsock/Makefile
@@ -1,12 +1,15 @@
 # SPDX-License-Identifier: GPL-2.0-only
 all: test vsock_perf
-test: vsock_test vsock_diag_test
-vsock_test: vsock_test.o timeout.o control.o util.o
+test: vsock_test vsock_diag_test vsock_uring_test
+vsock_test: vsock_test.o vsock_test_zerocopy.o timeout.o control.o util.o msg_zerocopy_common.o
 vsock_diag_test: vsock_diag_test.o timeout.o control.o util.o
-vsock_perf: vsock_perf.o
+vsock_perf: vsock_perf.o msg_zerocopy_common.o
+
+vsock_uring_test: LDLIBS = -luring
+vsock_uring_test: control.o util.o vsock_uring_test.o timeout.o msg_zerocopy_common.o
 
 CFLAGS += -g -O2 -Werror -Wall -I. -I../../include -I../../../usr/include -Wno-pointer-sign -fno-strict-overflow -fno-strict-aliasing -fno-common -MMD -U_FORTIFY_SOURCE -D_GNU_SOURCE
 .PHONY: all test clean
 clean:
-	${RM} *.o *.d vsock_test vsock_diag_test vsock_perf
+	${RM} *.o *.d vsock_test vsock_diag_test vsock_perf vsock_uring_test
 -include *.d
diff --git a/tools/testing/vsock/msg_zerocopy_common.c b/tools/testing/vsock/msg_zerocopy_common.c
new file mode 100644
index 0000000000..5a4bdf7b51
--- /dev/null
+++ b/tools/testing/vsock/msg_zerocopy_common.c
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Some common code for MSG_ZEROCOPY logic
+ *
+ * Copyright (C) 2023 SberDevices.
+ *
+ * Author: Arseniy Krasnov <avkrasnov@salutedevices.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <linux/errqueue.h>
+
+#include "msg_zerocopy_common.h"
+
+void enable_so_zerocopy(int fd)
+{
+	int val = 1;
+
+	if (setsockopt(fd, SOL_SOCKET, SO_ZEROCOPY, &val, sizeof(val))) {
+		perror("setsockopt");
+		exit(EXIT_FAILURE);
+	}
+}
+
+void vsock_recv_completion(int fd, const bool *zerocopied)
+{
+	struct sock_extended_err *serr;
+	struct msghdr msg = { 0 };
+	char cmsg_data[128];
+	struct cmsghdr *cm;
+	ssize_t res;
+
+	msg.msg_control = cmsg_data;
+	msg.msg_controllen = sizeof(cmsg_data);
+
+	res = recvmsg(fd, &msg, MSG_ERRQUEUE);
+	if (res) {
+		fprintf(stderr, "failed to read error queue: %zi\n", res);
+		exit(EXIT_FAILURE);
+	}
+
+	cm = CMSG_FIRSTHDR(&msg);
+	if (!cm) {
+		fprintf(stderr, "cmsg: no cmsg\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if (cm->cmsg_level != SOL_VSOCK) {
+		fprintf(stderr, "cmsg: unexpected 'cmsg_level'\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if (cm->cmsg_type != VSOCK_RECVERR) {
+		fprintf(stderr, "cmsg: unexpected 'cmsg_type'\n");
+		exit(EXIT_FAILURE);
+	}
+
+	serr = (void *)CMSG_DATA(cm);
+	if (serr->ee_origin != SO_EE_ORIGIN_ZEROCOPY) {
+		fprintf(stderr, "serr: wrong origin: %u\n", serr->ee_origin);
+		exit(EXIT_FAILURE);
+	}
+
+	if (serr->ee_errno) {
+		fprintf(stderr, "serr: wrong error code: %u\n", serr->ee_errno);
+		exit(EXIT_FAILURE);
+	}
+
+	/* This flag is used for tests, to check that transmission was
+	 * performed as expected: zerocopy or fallback to copy. If NULL
+	 * - don't care.
+	 */
+	if (!zerocopied)
+		return;
+
+	if (*zerocopied && (serr->ee_code & SO_EE_CODE_ZEROCOPY_COPIED)) {
+		fprintf(stderr, "serr: was copy instead of zerocopy\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if (!*zerocopied && !(serr->ee_code & SO_EE_CODE_ZEROCOPY_COPIED)) {
+		fprintf(stderr, "serr: was zerocopy instead of copy\n");
+		exit(EXIT_FAILURE);
+	}
+}
diff --git a/tools/testing/vsock/msg_zerocopy_common.h b/tools/testing/vsock/msg_zerocopy_common.h
new file mode 100644
index 0000000000..3763c5cced
--- /dev/null
+++ b/tools/testing/vsock/msg_zerocopy_common.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef MSG_ZEROCOPY_COMMON_H
+#define MSG_ZEROCOPY_COMMON_H
+
+#include <stdbool.h>
+
+#ifndef SOL_VSOCK
+#define SOL_VSOCK	287
+#endif
+
+#ifndef VSOCK_RECVERR
+#define VSOCK_RECVERR	1
+#endif
+
+void enable_so_zerocopy(int fd);
+void vsock_recv_completion(int fd, const bool *zerocopied);
+
+#endif /* MSG_ZEROCOPY_COMMON_H */
diff --git a/tools/testing/vsock/util.c b/tools/testing/vsock/util.c
index 01b636d303..ae2b33c21c 100644
--- a/tools/testing/vsock/util.c
+++ b/tools/testing/vsock/util.c
@@ -11,10 +11,12 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
 #include <signal.h>
 #include <unistd.h>
 #include <assert.h>
 #include <sys/epoll.h>
+#include <sys/mman.h>
 
 #include "timeout.h"
 #include "control.h"
@@ -83,6 +85,48 @@ void vsock_wait_remote_close(int fd)
 	close(epollfd);
 }
 
+/* Bind to <bind_port>, connect to <cid, port> and return the file descriptor. */
+int vsock_bind_connect(unsigned int cid, unsigned int port, unsigned int bind_port, int type)
+{
+	struct sockaddr_vm sa_client = {
+		.svm_family = AF_VSOCK,
+		.svm_cid = VMADDR_CID_ANY,
+		.svm_port = bind_port,
+	};
+	struct sockaddr_vm sa_server = {
+		.svm_family = AF_VSOCK,
+		.svm_cid = cid,
+		.svm_port = port,
+	};
+
+	int client_fd, ret;
+
+	client_fd = socket(AF_VSOCK, type, 0);
+	if (client_fd < 0) {
+		perror("socket");
+		exit(EXIT_FAILURE);
+	}
+
+	if (bind(client_fd, (struct sockaddr *)&sa_client, sizeof(sa_client))) {
+		perror("bind");
+		exit(EXIT_FAILURE);
+	}
+
+	timeout_begin(TIMEOUT);
+	do {
+		ret = connect(client_fd, (struct sockaddr *)&sa_server, sizeof(sa_server));
+		timeout_check("connect");
+	} while (ret < 0 && errno == EINTR);
+	timeout_end();
+
+	if (ret < 0) {
+		perror("connect");
+		exit(EXIT_FAILURE);
+	}
+
+	return client_fd;
+}
+
 /* Connect to <cid, port> and return the file descriptor. */
 static int vsock_connect(unsigned int cid, unsigned int port, int type)
 {
@@ -102,6 +146,10 @@ static int vsock_connect(unsigned int cid, unsigned int port, int type)
 	control_expectln("LISTENING");
 
 	fd = socket(AF_VSOCK, type, 0);
+	if (fd < 0) {
+		perror("socket");
+		exit(EXIT_FAILURE);
+	}
 
 	timeout_begin(TIMEOUT);
 	do {
@@ -130,11 +178,8 @@ int vsock_seqpacket_connect(unsigned int cid, unsigned int port)
 	return vsock_connect(cid, port, SOCK_SEQPACKET);
 }
 
-/* Listen on <cid, port> and return the first incoming connection.  The remote
- * address is stored to clientaddrp.  clientaddrp may be NULL.
- */
-static int vsock_accept(unsigned int cid, unsigned int port,
-			struct sockaddr_vm *clientaddrp, int type)
+/* Listen on <cid, port> and return the file descriptor. */
+static int vsock_listen(unsigned int cid, unsigned int port, int type)
 {
 	union {
 		struct sockaddr sa;
@@ -146,16 +191,13 @@ static int vsock_accept(unsigned int cid, unsigned int port,
 			.svm_cid = cid,
 		},
 	};
-	union {
-		struct sockaddr sa;
-		struct sockaddr_vm svm;
-	} clientaddr;
-	socklen_t clientaddr_len = sizeof(clientaddr.svm);
 	int fd;
-	int client_fd;
-	int old_errno;
 
 	fd = socket(AF_VSOCK, type, 0);
+	if (fd < 0) {
+		perror("socket");
+		exit(EXIT_FAILURE);
+	}
 
 	if (bind(fd, &addr.sa, sizeof(addr.svm)) < 0) {
 		perror("bind");
@@ -167,6 +209,24 @@ static int vsock_accept(unsigned int cid, unsigned int port,
 		exit(EXIT_FAILURE);
 	}
 
+	return fd;
+}
+
+/* Listen on <cid, port> and return the first incoming connection.  The remote
+ * address is stored to clientaddrp.  clientaddrp may be NULL.
+ */
+static int vsock_accept(unsigned int cid, unsigned int port,
+			struct sockaddr_vm *clientaddrp, int type)
+{
+	union {
+		struct sockaddr sa;
+		struct sockaddr_vm svm;
+	} clientaddr;
+	socklen_t clientaddr_len = sizeof(clientaddr.svm);
+	int fd, client_fd, old_errno;
+
+	fd = vsock_listen(cid, port, type);
+
 	control_writeln("LISTENING");
 
 	timeout_begin(TIMEOUT);
@@ -205,108 +265,149 @@ int vsock_stream_accept(unsigned int cid, unsigned int port,
 	return vsock_accept(cid, port, clientaddrp, SOCK_STREAM);
 }
 
+int vsock_stream_listen(unsigned int cid, unsigned int port)
+{
+	return vsock_listen(cid, port, SOCK_STREAM);
+}
+
 int vsock_seqpacket_accept(unsigned int cid, unsigned int port,
 			   struct sockaddr_vm *clientaddrp)
 {
 	return vsock_accept(cid, port, clientaddrp, SOCK_SEQPACKET);
 }
 
-/* Transmit one byte and check the return value.
+/* Transmit bytes from a buffer and check the return value.
  *
  * expected_ret:
  *  <0 Negative errno (for testing errors)
  *   0 End-of-file
- *   1 Success
+ *  >0 Success (bytes successfully written)
  */
-void send_byte(int fd, int expected_ret, int flags)
+void send_buf(int fd, const void *buf, size_t len, int flags,
+	      ssize_t expected_ret)
 {
-	const uint8_t byte = 'A';
-	ssize_t nwritten;
+	ssize_t nwritten = 0;
+	ssize_t ret;
 
 	timeout_begin(TIMEOUT);
 	do {
-		nwritten = send(fd, &byte, sizeof(byte), flags);
-		timeout_check("write");
-	} while (nwritten < 0 && errno == EINTR);
+		ret = send(fd, buf + nwritten, len - nwritten, flags);
+		timeout_check("send");
+
+		if (ret == 0 || (ret < 0 && errno != EINTR))
+			break;
+
+		nwritten += ret;
+	} while (nwritten < len);
 	timeout_end();
 
 	if (expected_ret < 0) {
-		if (nwritten != -1) {
-			fprintf(stderr, "bogus send(2) return value %zd\n",
-				nwritten);
+		if (ret != -1) {
+			fprintf(stderr, "bogus send(2) return value %zd (expected %zd)\n",
+				ret, expected_ret);
 			exit(EXIT_FAILURE);
 		}
 		if (errno != -expected_ret) {
-			perror("write");
+			perror("send");
 			exit(EXIT_FAILURE);
 		}
 		return;
 	}
 
-	if (nwritten < 0) {
-		perror("write");
+	if (ret < 0) {
+		perror("send");
 		exit(EXIT_FAILURE);
 	}
-	if (nwritten == 0) {
-		if (expected_ret == 0)
-			return;
 
-		fprintf(stderr, "unexpected EOF while sending byte\n");
-		exit(EXIT_FAILURE);
-	}
-	if (nwritten != sizeof(byte)) {
-		fprintf(stderr, "bogus send(2) return value %zd\n", nwritten);
+	if (nwritten != expected_ret) {
+		if (ret == 0)
+			fprintf(stderr, "unexpected EOF while sending bytes\n");
+
+		fprintf(stderr, "bogus send(2) bytes written %zd (expected %zd)\n",
+			nwritten, expected_ret);
 		exit(EXIT_FAILURE);
 	}
 }
 
-/* Receive one byte and check the return value.
+/* Receive bytes in a buffer and check the return value.
  *
  * expected_ret:
  *  <0 Negative errno (for testing errors)
  *   0 End-of-file
- *   1 Success
+ *  >0 Success (bytes successfully read)
  */
-void recv_byte(int fd, int expected_ret, int flags)
+void recv_buf(int fd, void *buf, size_t len, int flags, ssize_t expected_ret)
 {
-	uint8_t byte;
-	ssize_t nread;
+	ssize_t nread = 0;
+	ssize_t ret;
 
 	timeout_begin(TIMEOUT);
 	do {
-		nread = recv(fd, &byte, sizeof(byte), flags);
-		timeout_check("read");
-	} while (nread < 0 && errno == EINTR);
+		ret = recv(fd, buf + nread, len - nread, flags);
+		timeout_check("recv");
+
+		if (ret == 0 || (ret < 0 && errno != EINTR))
+			break;
+
+		nread += ret;
+	} while (nread < len);
 	timeout_end();
 
 	if (expected_ret < 0) {
-		if (nread != -1) {
-			fprintf(stderr, "bogus recv(2) return value %zd\n",
-				nread);
+		if (ret != -1) {
+			fprintf(stderr, "bogus recv(2) return value %zd (expected %zd)\n",
+				ret, expected_ret);
 			exit(EXIT_FAILURE);
 		}
 		if (errno != -expected_ret) {
-			perror("read");
+			perror("recv");
 			exit(EXIT_FAILURE);
 		}
 		return;
 	}
 
-	if (nread < 0) {
-		perror("read");
+	if (ret < 0) {
+		perror("recv");
 		exit(EXIT_FAILURE);
 	}
-	if (nread == 0) {
-		if (expected_ret == 0)
-			return;
 
-		fprintf(stderr, "unexpected EOF while receiving byte\n");
-		exit(EXIT_FAILURE);
-	}
-	if (nread != sizeof(byte)) {
-		fprintf(stderr, "bogus recv(2) return value %zd\n", nread);
+	if (nread != expected_ret) {
+		if (ret == 0)
+			fprintf(stderr, "unexpected EOF while receiving bytes\n");
+
+		fprintf(stderr, "bogus recv(2) bytes read %zd (expected %zd)\n",
+			nread, expected_ret);
 		exit(EXIT_FAILURE);
 	}
+}
+
+/* Transmit one byte and check the return value.
+ *
+ * expected_ret:
+ *  <0 Negative errno (for testing errors)
+ *   0 End-of-file
+ *   1 Success
+ */
+void send_byte(int fd, int expected_ret, int flags)
+{
+	const uint8_t byte = 'A';
+
+	send_buf(fd, &byte, sizeof(byte), flags, expected_ret);
+}
+
+/* Receive one byte and check the return value.
+ *
+ * expected_ret:
+ *  <0 Negative errno (for testing errors)
+ *   0 End-of-file
+ *   1 Success
+ */
+void recv_byte(int fd, int expected_ret, int flags)
+{
+	uint8_t byte;
+
+	recv_buf(fd, &byte, sizeof(byte), flags, expected_ret);
+
 	if (byte != 'A') {
 		fprintf(stderr, "unexpected byte read %c\n", byte);
 		exit(EXIT_FAILURE);
@@ -408,3 +509,134 @@ unsigned long hash_djb2(const void *data, size_t len)
 
 	return hash;
 }
+
+size_t iovec_bytes(const struct iovec *iov, size_t iovnum)
+{
+	size_t bytes;
+	int i;
+
+	for (bytes = 0, i = 0; i < iovnum; i++)
+		bytes += iov[i].iov_len;
+
+	return bytes;
+}
+
+unsigned long iovec_hash_djb2(const struct iovec *iov, size_t iovnum)
+{
+	unsigned long hash;
+	size_t iov_bytes;
+	size_t offs;
+	void *tmp;
+	int i;
+
+	iov_bytes = iovec_bytes(iov, iovnum);
+
+	tmp = malloc(iov_bytes);
+	if (!tmp) {
+		perror("malloc");
+		exit(EXIT_FAILURE);
+	}
+
+	for (offs = 0, i = 0; i < iovnum; i++) {
+		memcpy(tmp + offs, iov[i].iov_base, iov[i].iov_len);
+		offs += iov[i].iov_len;
+	}
+
+	hash = hash_djb2(tmp, iov_bytes);
+	free(tmp);
+
+	return hash;
+}
+
+/* Allocates and returns new 'struct iovec *' according pattern
+ * in the 'test_iovec'. For each element in the 'test_iovec' it
+ * allocates new element in the resulting 'iovec'. 'iov_len'
+ * of the new element is copied from 'test_iovec'. 'iov_base' is
+ * allocated depending on the 'iov_base' of 'test_iovec':
+ *
+ * 'iov_base' == NULL -> valid buf: mmap('iov_len').
+ *
+ * 'iov_base' == MAP_FAILED -> invalid buf:
+ *               mmap('iov_len'), then munmap('iov_len').
+ *               'iov_base' still contains result of
+ *               mmap().
+ *
+ * 'iov_base' == number -> unaligned valid buf:
+ *               mmap('iov_len') + number.
+ *
+ * 'iovnum' is number of elements in 'test_iovec'.
+ *
+ * Returns new 'iovec' or calls 'exit()' on error.
+ */
+struct iovec *alloc_test_iovec(const struct iovec *test_iovec, int iovnum)
+{
+	struct iovec *iovec;
+	int i;
+
+	iovec = malloc(sizeof(*iovec) * iovnum);
+	if (!iovec) {
+		perror("malloc");
+		exit(EXIT_FAILURE);
+	}
+
+	for (i = 0; i < iovnum; i++) {
+		iovec[i].iov_len = test_iovec[i].iov_len;
+
+		iovec[i].iov_base = mmap(NULL, iovec[i].iov_len,
+					 PROT_READ | PROT_WRITE,
+					 MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE,
+					 -1, 0);
+		if (iovec[i].iov_base == MAP_FAILED) {
+			perror("mmap");
+			exit(EXIT_FAILURE);
+		}
+
+		if (test_iovec[i].iov_base != MAP_FAILED)
+			iovec[i].iov_base += (uintptr_t)test_iovec[i].iov_base;
+	}
+
+	/* Unmap "invalid" elements. */
+	for (i = 0; i < iovnum; i++) {
+		if (test_iovec[i].iov_base == MAP_FAILED) {
+			if (munmap(iovec[i].iov_base, iovec[i].iov_len)) {
+				perror("munmap");
+				exit(EXIT_FAILURE);
+			}
+		}
+	}
+
+	for (i = 0; i < iovnum; i++) {
+		int j;
+
+		if (test_iovec[i].iov_base == MAP_FAILED)
+			continue;
+
+		for (j = 0; j < iovec[i].iov_len; j++)
+			((uint8_t *)iovec[i].iov_base)[j] = rand() & 0xff;
+	}
+
+	return iovec;
+}
+
+/* Frees 'iovec *', previously allocated by 'alloc_test_iovec()'.
+ * On error calls 'exit()'.
+ */
+void free_test_iovec(const struct iovec *test_iovec,
+		     struct iovec *iovec, int iovnum)
+{
+	int i;
+
+	for (i = 0; i < iovnum; i++) {
+		if (test_iovec[i].iov_base != MAP_FAILED) {
+			if (test_iovec[i].iov_base)
+				iovec[i].iov_base -= (uintptr_t)test_iovec[i].iov_base;
+
+			if (munmap(iovec[i].iov_base, iovec[i].iov_len)) {
+				perror("munmap");
+				exit(EXIT_FAILURE);
+			}
+		}
+	}
+
+	free(iovec);
+}
diff --git a/tools/testing/vsock/util.h b/tools/testing/vsock/util.h
index fb99208a95..03c88d0cb8 100644
--- a/tools/testing/vsock/util.h
+++ b/tools/testing/vsock/util.h
@@ -36,12 +36,18 @@ struct test_case {
 void init_signals(void);
 unsigned int parse_cid(const char *str);
 int vsock_stream_connect(unsigned int cid, unsigned int port);
+int vsock_bind_connect(unsigned int cid, unsigned int port,
+		       unsigned int bind_port, int type);
 int vsock_seqpacket_connect(unsigned int cid, unsigned int port);
 int vsock_stream_accept(unsigned int cid, unsigned int port,
 			struct sockaddr_vm *clientaddrp);
+int vsock_stream_listen(unsigned int cid, unsigned int port);
 int vsock_seqpacket_accept(unsigned int cid, unsigned int port,
 			   struct sockaddr_vm *clientaddrp);
 void vsock_wait_remote_close(int fd);
+void send_buf(int fd, const void *buf, size_t len, int flags,
+	      ssize_t expected_ret);
+void recv_buf(int fd, void *buf, size_t len, int flags, ssize_t expected_ret);
 void send_byte(int fd, int expected_ret, int flags);
 void recv_byte(int fd, int expected_ret, int flags);
 void run_tests(const struct test_case *test_cases,
@@ -50,4 +56,9 @@ void list_tests(const struct test_case *test_cases);
 void skip_test(struct test_case *test_cases, size_t test_cases_len,
 	       const char *test_id_str);
 unsigned long hash_djb2(const void *data, size_t len);
+size_t iovec_bytes(const struct iovec *iov, size_t iovnum);
+unsigned long iovec_hash_djb2(const struct iovec *iov, size_t iovnum);
+struct iovec *alloc_test_iovec(const struct iovec *test_iovec, int iovnum);
+void free_test_iovec(const struct iovec *test_iovec,
+		     struct iovec *iovec, int iovnum);
 #endif /* UTIL_H */
diff --git a/tools/testing/vsock/vsock_perf.c b/tools/testing/vsock/vsock_perf.c
index a72520338f..4e8578f815 100644
--- a/tools/testing/vsock/vsock_perf.c
+++ b/tools/testing/vsock/vsock_perf.c
@@ -18,6 +18,9 @@
 #include <poll.h>
 #include <sys/socket.h>
 #include <linux/vm_sockets.h>
+#include <sys/mman.h>
+
+#include "msg_zerocopy_common.h"
 
 #define DEFAULT_BUF_SIZE_BYTES	(128 * 1024)
 #define DEFAULT_TO_SEND_BYTES	(64 * 1024)
@@ -31,6 +34,7 @@
 static unsigned int port = DEFAULT_PORT;
 static unsigned long buf_size_bytes = DEFAULT_BUF_SIZE_BYTES;
 static unsigned long vsock_buf_bytes = DEFAULT_VSOCK_BUF_BYTES;
+static bool zerocopy;
 
 static void error(const char *s)
 {
@@ -252,10 +256,15 @@ static void run_sender(int peer_cid, unsigned long to_send_bytes)
 	time_t tx_begin_ns;
 	time_t tx_total_ns;
 	size_t total_send;
+	time_t time_in_send;
 	void *data;
 	int fd;
 
-	printf("Run as sender\n");
+	if (zerocopy)
+		printf("Run as sender MSG_ZEROCOPY\n");
+	else
+		printf("Run as sender\n");
+
 	printf("Connect to %i:%u\n", peer_cid, port);
 	printf("Send %lu bytes\n", to_send_bytes);
 	printf("TX buffer %lu bytes\n", buf_size_bytes);
@@ -265,38 +274,82 @@ static void run_sender(int peer_cid, unsigned long to_send_bytes)
 	if (fd < 0)
 		exit(EXIT_FAILURE);
 
-	data = malloc(buf_size_bytes);
+	if (zerocopy) {
+		enable_so_zerocopy(fd);
 
-	if (!data) {
-		fprintf(stderr, "'malloc()' failed\n");
-		exit(EXIT_FAILURE);
+		data = mmap(NULL, buf_size_bytes, PROT_READ | PROT_WRITE,
+			    MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+		if (data == MAP_FAILED) {
+			perror("mmap");
+			exit(EXIT_FAILURE);
+		}
+	} else {
+		data = malloc(buf_size_bytes);
+
+		if (!data) {
+			fprintf(stderr, "'malloc()' failed\n");
+			exit(EXIT_FAILURE);
+		}
 	}
 
 	memset(data, 0, buf_size_bytes);
 	total_send = 0;
+	time_in_send = 0;
 	tx_begin_ns = current_nsec();
 
 	while (total_send < to_send_bytes) {
 		ssize_t sent;
+		size_t rest_bytes;
+		time_t before;
 
-		sent = write(fd, data, buf_size_bytes);
+		rest_bytes = to_send_bytes - total_send;
+
+		before = current_nsec();
+		sent = send(fd, data, (rest_bytes > buf_size_bytes) ?
+			    buf_size_bytes : rest_bytes,
+			    zerocopy ? MSG_ZEROCOPY : 0);
+		time_in_send += (current_nsec() - before);
 
 		if (sent <= 0)
 			error("write");
 
 		total_send += sent;
+
+		if (zerocopy) {
+			struct pollfd fds = { 0 };
+
+			fds.fd = fd;
+
+			if (poll(&fds, 1, -1) < 0) {
+				perror("poll");
+				exit(EXIT_FAILURE);
+			}
+
+			if (!(fds.revents & POLLERR)) {
+				fprintf(stderr, "POLLERR expected\n");
+				exit(EXIT_FAILURE);
+			}
+
+			vsock_recv_completion(fd, NULL);
+		}
 	}
 
 	tx_total_ns = current_nsec() - tx_begin_ns;
 
 	printf("total bytes sent: %zu\n", total_send);
 	printf("tx performance: %f Gbits/s\n",
-	       get_gbps(total_send * 8, tx_total_ns));
-	printf("total time in 'write()': %f sec\n",
+	       get_gbps(total_send * 8, time_in_send));
+	printf("total time in tx loop: %f sec\n",
 	       (float)tx_total_ns / NSEC_PER_SEC);
+	printf("time in 'send()': %f sec\n",
+	       (float)time_in_send / NSEC_PER_SEC);
 
 	close(fd);
-	free(data);
+
+	if (zerocopy)
+		munmap(data, buf_size_bytes);
+	else
+		free(data);
 }
 
 static const char optstring[] = "";
@@ -336,6 +389,11 @@ static const struct option longopts[] = {
 		.has_arg = required_argument,
 		.val = 'R',
 	},
+	{
+		.name = "zerocopy",
+		.has_arg = no_argument,
+		.val = 'Z',
+	},
 	{},
 };
 
@@ -351,6 +409,7 @@ static void usage(void)
 	       "  --help			This message\n"
 	       "  --sender   <cid>		Sender mode (receiver default)\n"
 	       "                                <cid> of the receiver to connect to\n"
+	       "  --zerocopy			Enable zerocopy (for sender mode only)\n"
 	       "  --port     <port>		Port (default %d)\n"
 	       "  --bytes    <bytes>KMG		Bytes to send (default %d)\n"
 	       "  --buf-size <bytes>KMG		Data buffer size (default %d). In sender mode\n"
@@ -413,6 +472,9 @@ int main(int argc, char **argv)
 		case 'H': /* Help. */
 			usage();
 			break;
+		case 'Z': /* Zerocopy. */
+			zerocopy = true;
+			break;
 		default:
 			usage();
 		}
diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 5dc7767039..01fa816868 100644
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -19,7 +19,9 @@
 #include <time.h>
 #include <sys/mman.h>
 #include <poll.h>
+#include <signal.h>
 
+#include "vsock_test_zerocopy.h"
 #include "timeout.h"
 #include "control.h"
 #include "util.h"
@@ -261,7 +263,6 @@ static void test_msg_peek_client(const struct test_opts *opts,
 				 bool seqpacket)
 {
 	unsigned char buf[MSG_PEEK_BUF_LEN];
-	ssize_t send_size;
 	int fd;
 	int i;
 
@@ -280,17 +281,7 @@ static void test_msg_peek_client(const struct test_opts *opts,
 
 	control_expectln("SRVREADY");
 
-	send_size = send(fd, buf, sizeof(buf), 0);
-
-	if (send_size < 0) {
-		perror("send");
-		exit(EXIT_FAILURE);
-	}
-
-	if (send_size != sizeof(buf)) {
-		fprintf(stderr, "Invalid send size %zi\n", send_size);
-		exit(EXIT_FAILURE);
-	}
+	send_buf(fd, buf, sizeof(buf), 0, sizeof(buf));
 
 	close(fd);
 }
@@ -301,7 +292,6 @@ static void test_msg_peek_server(const struct test_opts *opts,
 	unsigned char buf_half[MSG_PEEK_BUF_LEN / 2];
 	unsigned char buf_normal[MSG_PEEK_BUF_LEN];
 	unsigned char buf_peek[MSG_PEEK_BUF_LEN];
-	ssize_t res;
 	int fd;
 
 	if (seqpacket)
@@ -315,34 +305,16 @@ static void test_msg_peek_server(const struct test_opts *opts,
 	}
 
 	/* Peek from empty socket. */
-	res = recv(fd, buf_peek, sizeof(buf_peek), MSG_PEEK | MSG_DONTWAIT);
-	if (res != -1) {
-		fprintf(stderr, "expected recv(2) failure, got %zi\n", res);
-		exit(EXIT_FAILURE);
-	}
-
-	if (errno != EAGAIN) {
-		perror("EAGAIN expected");
-		exit(EXIT_FAILURE);
-	}
+	recv_buf(fd, buf_peek, sizeof(buf_peek), MSG_PEEK | MSG_DONTWAIT,
+		 -EAGAIN);
 
 	control_writeln("SRVREADY");
 
 	/* Peek part of data. */
-	res = recv(fd, buf_half, sizeof(buf_half), MSG_PEEK);
-	if (res != sizeof(buf_half)) {
-		fprintf(stderr, "recv(2) + MSG_PEEK, expected %zu, got %zi\n",
-			sizeof(buf_half), res);
-		exit(EXIT_FAILURE);
-	}
+	recv_buf(fd, buf_half, sizeof(buf_half), MSG_PEEK, sizeof(buf_half));
 
 	/* Peek whole data. */
-	res = recv(fd, buf_peek, sizeof(buf_peek), MSG_PEEK);
-	if (res != sizeof(buf_peek)) {
-		fprintf(stderr, "recv(2) + MSG_PEEK, expected %zu, got %zi\n",
-			sizeof(buf_peek), res);
-		exit(EXIT_FAILURE);
-	}
+	recv_buf(fd, buf_peek, sizeof(buf_peek), MSG_PEEK, sizeof(buf_peek));
 
 	/* Compare partial and full peek. */
 	if (memcmp(buf_half, buf_peek, sizeof(buf_half))) {
@@ -355,22 +327,11 @@ static void test_msg_peek_server(const struct test_opts *opts,
 		 * so check it with MSG_PEEK. We must get length
 		 * of the message.
 		 */
-		res = recv(fd, buf_half, sizeof(buf_half), MSG_PEEK |
-			   MSG_TRUNC);
-		if (res != sizeof(buf_peek)) {
-			fprintf(stderr,
-				"recv(2) + MSG_PEEK | MSG_TRUNC, exp %zu, got %zi\n",
-				sizeof(buf_half), res);
-			exit(EXIT_FAILURE);
-		}
+		recv_buf(fd, buf_half, sizeof(buf_half), MSG_PEEK | MSG_TRUNC,
+			 sizeof(buf_peek));
 	}
 
-	res = recv(fd, buf_normal, sizeof(buf_normal), 0);
-	if (res != sizeof(buf_normal)) {
-		fprintf(stderr, "recv(2), expected %zu, got %zi\n",
-			sizeof(buf_normal), res);
-		exit(EXIT_FAILURE);
-	}
+	recv_buf(fd, buf_normal, sizeof(buf_normal), 0, sizeof(buf_normal));
 
 	/* Compare full peek and normal read. */
 	if (memcmp(buf_peek, buf_normal, sizeof(buf_peek))) {
@@ -417,7 +378,6 @@ static void test_seqpacket_msg_bounds_client(const struct test_opts *opts)
 	msg_count = SOCK_BUF_SIZE / max_msg_size;
 
 	for (int i = 0; i < msg_count; i++) {
-		ssize_t send_size;
 		size_t buf_size;
 		int flags;
 		void *buf;
@@ -445,17 +405,7 @@ static void test_seqpacket_msg_bounds_client(const struct test_opts *opts)
 			flags = 0;
 		}
 
-		send_size = send(fd, buf, buf_size, flags);
-
-		if (send_size < 0) {
-			perror("send");
-			exit(EXIT_FAILURE);
-		}
-
-		if (send_size != buf_size) {
-			fprintf(stderr, "Invalid send size\n");
-			exit(EXIT_FAILURE);
-		}
+		send_buf(fd, buf, buf_size, flags, buf_size);
 
 		/*
 		 * Hash sum is computed at both client and server in
@@ -561,10 +511,7 @@ static void test_seqpacket_msg_trunc_client(const struct test_opts *opts)
 		exit(EXIT_FAILURE);
 	}
 
-	if (send(fd, buf, sizeof(buf), 0) != sizeof(buf)) {
-		perror("send failed");
-		exit(EXIT_FAILURE);
-	}
+	send_buf(fd, buf, sizeof(buf), 0, sizeof(buf));
 
 	control_writeln("SENDDONE");
 	close(fd);
@@ -686,7 +633,6 @@ static void test_seqpacket_timeout_server(const struct test_opts *opts)
 static void test_seqpacket_bigmsg_client(const struct test_opts *opts)
 {
 	unsigned long sock_buf_size;
-	ssize_t send_size;
 	socklen_t len;
 	void *data;
 	int fd;
@@ -713,18 +659,7 @@ static void test_seqpacket_bigmsg_client(const struct test_opts *opts)
 		exit(EXIT_FAILURE);
 	}
 
-	send_size = send(fd, data, sock_buf_size, 0);
-	if (send_size != -1) {
-		fprintf(stderr, "expected 'send(2)' failure, got %zi\n",
-			send_size);
-		exit(EXIT_FAILURE);
-	}
-
-	if (errno != EMSGSIZE) {
-		fprintf(stderr, "expected EMSGSIZE in 'errno', got %i\n",
-			errno);
-		exit(EXIT_FAILURE);
-	}
+	send_buf(fd, data, sock_buf_size, 0, -EMSGSIZE);
 
 	control_writeln("CLISENT");
 
@@ -778,15 +713,9 @@ static void test_seqpacket_invalid_rec_buffer_client(const struct test_opts *opt
 	memset(buf1, BUF_PATTERN_1, buf_size);
 	memset(buf2, BUF_PATTERN_2, buf_size);
 
-	if (send(fd, buf1, buf_size, 0) != buf_size) {
-		perror("send failed");
-		exit(EXIT_FAILURE);
-	}
+	send_buf(fd, buf1, buf_size, 0, buf_size);
 
-	if (send(fd, buf2, buf_size, 0) != buf_size) {
-		perror("send failed");
-		exit(EXIT_FAILURE);
-	}
+	send_buf(fd, buf2, buf_size, 0, buf_size);
 
 	close(fd);
 }
@@ -907,7 +836,6 @@ static void test_stream_poll_rcvlowat_client(const struct test_opts *opts)
 	unsigned long lowat_val = RCVLOWAT_BUF_SIZE;
 	char buf[RCVLOWAT_BUF_SIZE];
 	struct pollfd fds;
-	ssize_t read_res;
 	short poll_flags;
 	int fd;
 
@@ -962,12 +890,7 @@ static void test_stream_poll_rcvlowat_client(const struct test_opts *opts)
 	/* Use MSG_DONTWAIT, if call is going to wait, EAGAIN
 	 * will be returned.
 	 */
-	read_res = recv(fd, buf, sizeof(buf), MSG_DONTWAIT);
-	if (read_res != RCVLOWAT_BUF_SIZE) {
-		fprintf(stderr, "Unexpected recv result %zi\n",
-			read_res);
-		exit(EXIT_FAILURE);
-	}
+	recv_buf(fd, buf, sizeof(buf), MSG_DONTWAIT, RCVLOWAT_BUF_SIZE);
 
 	control_writeln("POLLDONE");
 
@@ -979,7 +902,7 @@ static void test_stream_poll_rcvlowat_client(const struct test_opts *opts)
 static void test_inv_buf_client(const struct test_opts *opts, bool stream)
 {
 	unsigned char data[INV_BUF_TEST_DATA_LEN] = {0};
-	ssize_t ret;
+	ssize_t expected_ret;
 	int fd;
 
 	if (stream)
@@ -995,39 +918,18 @@ static void test_inv_buf_client(const struct test_opts *opts, bool stream)
 	control_expectln("SENDDONE");
 
 	/* Use invalid buffer here. */
-	ret = recv(fd, NULL, sizeof(data), 0);
-	if (ret != -1) {
-		fprintf(stderr, "expected recv(2) failure, got %zi\n", ret);
-		exit(EXIT_FAILURE);
-	}
-
-	if (errno != EFAULT) {
-		fprintf(stderr, "unexpected recv(2) errno %d\n", errno);
-		exit(EXIT_FAILURE);
-	}
-
-	ret = recv(fd, data, sizeof(data), MSG_DONTWAIT);
+	recv_buf(fd, NULL, sizeof(data), 0, -EFAULT);
 
 	if (stream) {
 		/* For SOCK_STREAM we must continue reading. */
-		if (ret != sizeof(data)) {
-			fprintf(stderr, "expected recv(2) success, got %zi\n", ret);
-			exit(EXIT_FAILURE);
-		}
-		/* Don't check errno in case of success. */
+		expected_ret = sizeof(data);
 	} else {
 		/* For SOCK_SEQPACKET socket's queue must be empty. */
-		if (ret != -1) {
-			fprintf(stderr, "expected recv(2) failure, got %zi\n", ret);
-			exit(EXIT_FAILURE);
-		}
-
-		if (errno != EAGAIN) {
-			fprintf(stderr, "unexpected recv(2) errno %d\n", errno);
-			exit(EXIT_FAILURE);
-		}
+		expected_ret = -EAGAIN;
 	}
 
+	recv_buf(fd, data, sizeof(data), MSG_DONTWAIT, expected_ret);
+
 	control_writeln("DONE");
 
 	close(fd);
@@ -1036,7 +938,6 @@ static void test_inv_buf_client(const struct test_opts *opts, bool stream)
 static void test_inv_buf_server(const struct test_opts *opts, bool stream)
 {
 	unsigned char data[INV_BUF_TEST_DATA_LEN] = {0};
-	ssize_t res;
 	int fd;
 
 	if (stream)
@@ -1049,11 +950,7 @@ static void test_inv_buf_server(const struct test_opts *opts, bool stream)
 		exit(EXIT_FAILURE);
 	}
 
-	res = send(fd, data, sizeof(data), 0);
-	if (res != sizeof(data)) {
-		fprintf(stderr, "unexpected send(2) result %zi\n", res);
-		exit(EXIT_FAILURE);
-	}
+	send_buf(fd, data, sizeof(data), 0, sizeof(data));
 
 	control_writeln("SENDDONE");
 
@@ -1087,7 +984,6 @@ static void test_seqpacket_inv_buf_server(const struct test_opts *opts)
 
 static void test_stream_virtio_skb_merge_client(const struct test_opts *opts)
 {
-	ssize_t res;
 	int fd;
 
 	fd = vsock_stream_connect(opts->peer_cid, 1234);
@@ -1097,22 +993,14 @@ static void test_stream_virtio_skb_merge_client(const struct test_opts *opts)
 	}
 
 	/* Send first skbuff. */
-	res = send(fd, HELLO_STR, strlen(HELLO_STR), 0);
-	if (res != strlen(HELLO_STR)) {
-		fprintf(stderr, "unexpected send(2) result %zi\n", res);
-		exit(EXIT_FAILURE);
-	}
+	send_buf(fd, HELLO_STR, strlen(HELLO_STR), 0, strlen(HELLO_STR));
 
 	control_writeln("SEND0");
 	/* Peer reads part of first skbuff. */
 	control_expectln("REPLY0");
 
 	/* Send second skbuff, it will be appended to the first. */
-	res = send(fd, WORLD_STR, strlen(WORLD_STR), 0);
-	if (res != strlen(WORLD_STR)) {
-		fprintf(stderr, "unexpected send(2) result %zi\n", res);
-		exit(EXIT_FAILURE);
-	}
+	send_buf(fd, WORLD_STR, strlen(WORLD_STR), 0, strlen(WORLD_STR));
 
 	control_writeln("SEND1");
 	/* Peer reads merged skbuff packet. */
@@ -1123,8 +1011,8 @@ static void test_stream_virtio_skb_merge_client(const struct test_opts *opts)
 
 static void test_stream_virtio_skb_merge_server(const struct test_opts *opts)
 {
+	size_t read = 0, to_read;
 	unsigned char buf[64];
-	ssize_t res;
 	int fd;
 
 	fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
@@ -1136,26 +1024,21 @@ static void test_stream_virtio_skb_merge_server(const struct test_opts *opts)
 	control_expectln("SEND0");
 
 	/* Read skbuff partially. */
-	res = recv(fd, buf, 2, 0);
-	if (res != 2) {
-		fprintf(stderr, "expected recv(2) returns 2 bytes, got %zi\n", res);
-		exit(EXIT_FAILURE);
-	}
+	to_read = 2;
+	recv_buf(fd, buf + read, to_read, 0, to_read);
+	read += to_read;
 
 	control_writeln("REPLY0");
 	control_expectln("SEND1");
 
-	res = recv(fd, buf + 2, sizeof(buf) - 2, 0);
-	if (res != 8) {
-		fprintf(stderr, "expected recv(2) returns 8 bytes, got %zi\n", res);
-		exit(EXIT_FAILURE);
-	}
+	/* Read the rest of both buffers */
+	to_read = strlen(HELLO_STR WORLD_STR) - read;
+	recv_buf(fd, buf + read, to_read, 0, to_read);
+	read += to_read;
 
-	res = recv(fd, buf, sizeof(buf) - 8 - 2, MSG_DONTWAIT);
-	if (res != -1) {
-		fprintf(stderr, "expected recv(2) failure, got %zi\n", res);
-		exit(EXIT_FAILURE);
-	}
+	/* No more bytes should be there */
+	to_read = sizeof(buf) - read;
+	recv_buf(fd, buf + read, to_read, MSG_DONTWAIT, -EAGAIN);
 
 	if (memcmp(buf, HELLO_STR WORLD_STR, strlen(HELLO_STR WORLD_STR))) {
 		fprintf(stderr, "pattern mismatch\n");
@@ -1177,6 +1060,178 @@ static void test_seqpacket_msg_peek_server(const struct test_opts *opts)
 	return test_msg_peek_server(opts, true);
 }
 
+static sig_atomic_t have_sigpipe;
+
+static void sigpipe(int signo)
+{
+	have_sigpipe = 1;
+}
+
+static void test_stream_check_sigpipe(int fd)
+{
+	ssize_t res;
+
+	have_sigpipe = 0;
+
+	res = send(fd, "A", 1, 0);
+	if (res != -1) {
+		fprintf(stderr, "expected send(2) failure, got %zi\n", res);
+		exit(EXIT_FAILURE);
+	}
+
+	if (!have_sigpipe) {
+		fprintf(stderr, "SIGPIPE expected\n");
+		exit(EXIT_FAILURE);
+	}
+
+	have_sigpipe = 0;
+
+	res = send(fd, "A", 1, MSG_NOSIGNAL);
+	if (res != -1) {
+		fprintf(stderr, "expected send(2) failure, got %zi\n", res);
+		exit(EXIT_FAILURE);
+	}
+
+	if (have_sigpipe) {
+		fprintf(stderr, "SIGPIPE not expected\n");
+		exit(EXIT_FAILURE);
+	}
+}
+
+static void test_stream_shutwr_client(const struct test_opts *opts)
+{
+	int fd;
+
+	struct sigaction act = {
+		.sa_handler = sigpipe,
+	};
+
+	sigaction(SIGPIPE, &act, NULL);
+
+	fd = vsock_stream_connect(opts->peer_cid, 1234);
+	if (fd < 0) {
+		perror("connect");
+		exit(EXIT_FAILURE);
+	}
+
+	if (shutdown(fd, SHUT_WR)) {
+		perror("shutdown");
+		exit(EXIT_FAILURE);
+	}
+
+	test_stream_check_sigpipe(fd);
+
+	control_writeln("CLIENTDONE");
+
+	close(fd);
+}
+
+static void test_stream_shutwr_server(const struct test_opts *opts)
+{
+	int fd;
+
+	fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
+	if (fd < 0) {
+		perror("accept");
+		exit(EXIT_FAILURE);
+	}
+
+	control_expectln("CLIENTDONE");
+
+	close(fd);
+}
+
+static void test_stream_shutrd_client(const struct test_opts *opts)
+{
+	int fd;
+
+	struct sigaction act = {
+		.sa_handler = sigpipe,
+	};
+
+	sigaction(SIGPIPE, &act, NULL);
+
+	fd = vsock_stream_connect(opts->peer_cid, 1234);
+	if (fd < 0) {
+		perror("connect");
+		exit(EXIT_FAILURE);
+	}
+
+	control_expectln("SHUTRDDONE");
+
+	test_stream_check_sigpipe(fd);
+
+	control_writeln("CLIENTDONE");
+
+	close(fd);
+}
+
+static void test_stream_shutrd_server(const struct test_opts *opts)
+{
+	int fd;
+
+	fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
+	if (fd < 0) {
+		perror("accept");
+		exit(EXIT_FAILURE);
+	}
+
+	if (shutdown(fd, SHUT_RD)) {
+		perror("shutdown");
+		exit(EXIT_FAILURE);
+	}
+
+	control_writeln("SHUTRDDONE");
+	control_expectln("CLIENTDONE");
+
+	close(fd);
+}
+
+static void test_double_bind_connect_server(const struct test_opts *opts)
+{
+	int listen_fd, client_fd, i;
+	struct sockaddr_vm sa_client;
+	socklen_t socklen_client = sizeof(sa_client);
+
+	listen_fd = vsock_stream_listen(VMADDR_CID_ANY, 1234);
+
+	for (i = 0; i < 2; i++) {
+		control_writeln("LISTENING");
+
+		timeout_begin(TIMEOUT);
+		do {
+			client_fd = accept(listen_fd, (struct sockaddr *)&sa_client,
+					   &socklen_client);
+			timeout_check("accept");
+		} while (client_fd < 0 && errno == EINTR);
+		timeout_end();
+
+		if (client_fd < 0) {
+			perror("accept");
+			exit(EXIT_FAILURE);
+		}
+
+		/* Waiting for remote peer to close connection */
+		vsock_wait_remote_close(client_fd);
+	}
+
+	close(listen_fd);
+}
+
+static void test_double_bind_connect_client(const struct test_opts *opts)
+{
+	int i, client_fd;
+
+	for (i = 0; i < 2; i++) {
+		/* Wait until server is ready to accept a new connection */
+		control_expectln("LISTENING");
+
+		client_fd = vsock_bind_connect(opts->peer_cid, 1234, 4321, SOCK_STREAM);
+
+		close(client_fd);
+	}
+}
+
 static struct test_case test_cases[] = {
 	{
 		.name = "SOCK_STREAM connection reset",
@@ -1257,6 +1312,36 @@ static struct test_case test_cases[] = {
 		.run_client = test_seqpacket_msg_peek_client,
 		.run_server = test_seqpacket_msg_peek_server,
 	},
+	{
+		.name = "SOCK_STREAM SHUT_WR",
+		.run_client = test_stream_shutwr_client,
+		.run_server = test_stream_shutwr_server,
+	},
+	{
+		.name = "SOCK_STREAM SHUT_RD",
+		.run_client = test_stream_shutrd_client,
+		.run_server = test_stream_shutrd_server,
+	},
+	{
+		.name = "SOCK_STREAM MSG_ZEROCOPY",
+		.run_client = test_stream_msgzcopy_client,
+		.run_server = test_stream_msgzcopy_server,
+	},
+	{
+		.name = "SOCK_SEQPACKET MSG_ZEROCOPY",
+		.run_client = test_seqpacket_msgzcopy_client,
+		.run_server = test_seqpacket_msgzcopy_server,
+	},
+	{
+		.name = "SOCK_STREAM MSG_ZEROCOPY empty MSG_ERRQUEUE",
+		.run_client = test_stream_msgzcopy_empty_errq_client,
+		.run_server = test_stream_msgzcopy_empty_errq_server,
+	},
+	{
+		.name = "SOCK_STREAM double bind connect",
+		.run_client = test_double_bind_connect_client,
+		.run_server = test_double_bind_connect_server,
+	},
 	{},
 };
 
diff --git a/tools/testing/vsock/vsock_test_zerocopy.c b/tools/testing/vsock/vsock_test_zerocopy.c
new file mode 100644
index 0000000000..a16ff76484
--- /dev/null
+++ b/tools/testing/vsock/vsock_test_zerocopy.c
@@ -0,0 +1,358 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* MSG_ZEROCOPY feature tests for vsock
+ *
+ * Copyright (C) 2023 SberDevices.
+ *
+ * Author: Arseniy Krasnov <avkrasnov@salutedevices.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <poll.h>
+#include <linux/errqueue.h>
+#include <linux/kernel.h>
+#include <errno.h>
+
+#include "control.h"
+#include "vsock_test_zerocopy.h"
+#include "msg_zerocopy_common.h"
+
+#ifndef PAGE_SIZE
+#define PAGE_SIZE		4096
+#endif
+
+#define VSOCK_TEST_DATA_MAX_IOV 3
+
+struct vsock_test_data {
+	/* This test case if for SOCK_STREAM only. */
+	bool stream_only;
+	/* Data must be zerocopied. This field is checked against
+	 * field 'ee_code' of the 'struct sock_extended_err', which
+	 * contains bit to detect that zerocopy transmission was
+	 * fallbacked to copy mode.
+	 */
+	bool zerocopied;
+	/* Enable SO_ZEROCOPY option on the socket. Without enabled
+	 * SO_ZEROCOPY, every MSG_ZEROCOPY transmission will behave
+	 * like without MSG_ZEROCOPY flag.
+	 */
+	bool so_zerocopy;
+	/* 'errno' after 'sendmsg()' call. */
+	int sendmsg_errno;
+	/* Number of valid elements in 'vecs'. */
+	int vecs_cnt;
+	struct iovec vecs[VSOCK_TEST_DATA_MAX_IOV];
+};
+
+static struct vsock_test_data test_data_array[] = {
+	/* Last element has non-page aligned size. */
+	{
+		.zerocopied = true,
+		.so_zerocopy = true,
+		.sendmsg_errno = 0,
+		.vecs_cnt = 3,
+		{
+			{ NULL, PAGE_SIZE },
+			{ NULL, PAGE_SIZE },
+			{ NULL, 200 }
+		}
+	},
+	/* All elements have page aligned base and size. */
+	{
+		.zerocopied = true,
+		.so_zerocopy = true,
+		.sendmsg_errno = 0,
+		.vecs_cnt = 3,
+		{
+			{ NULL, PAGE_SIZE },
+			{ NULL, PAGE_SIZE * 2 },
+			{ NULL, PAGE_SIZE * 3 }
+		}
+	},
+	/* All elements have page aligned base and size. But
+	 * data length is bigger than 64Kb.
+	 */
+	{
+		.zerocopied = true,
+		.so_zerocopy = true,
+		.sendmsg_errno = 0,
+		.vecs_cnt = 3,
+		{
+			{ NULL, PAGE_SIZE * 16 },
+			{ NULL, PAGE_SIZE * 16 },
+			{ NULL, PAGE_SIZE * 16 }
+		}
+	},
+	/* Middle element has both non-page aligned base and size. */
+	{
+		.zerocopied = true,
+		.so_zerocopy = true,
+		.sendmsg_errno = 0,
+		.vecs_cnt = 3,
+		{
+			{ NULL, PAGE_SIZE },
+			{ (void *)1, 100 },
+			{ NULL, PAGE_SIZE }
+		}
+	},
+	/* Middle element is unmapped. */
+	{
+		.zerocopied = false,
+		.so_zerocopy = true,
+		.sendmsg_errno = ENOMEM,
+		.vecs_cnt = 3,
+		{
+			{ NULL, PAGE_SIZE },
+			{ MAP_FAILED, PAGE_SIZE },
+			{ NULL, PAGE_SIZE }
+		}
+	},
+	/* Valid data, but SO_ZEROCOPY is off. This
+	 * will trigger fallback to copy.
+	 */
+	{
+		.zerocopied = false,
+		.so_zerocopy = false,
+		.sendmsg_errno = 0,
+		.vecs_cnt = 1,
+		{
+			{ NULL, PAGE_SIZE }
+		}
+	},
+	/* Valid data, but message is bigger than peer's
+	 * buffer, so this will trigger fallback to copy.
+	 * This test is for SOCK_STREAM only, because
+	 * for SOCK_SEQPACKET, 'sendmsg()' returns EMSGSIZE.
+	 */
+	{
+		.stream_only = true,
+		.zerocopied = false,
+		.so_zerocopy = true,
+		.sendmsg_errno = 0,
+		.vecs_cnt = 1,
+		{
+			{ NULL, 100 * PAGE_SIZE }
+		}
+	},
+};
+
+#define POLL_TIMEOUT_MS		100
+
+static void test_client(const struct test_opts *opts,
+			const struct vsock_test_data *test_data,
+			bool sock_seqpacket)
+{
+	struct pollfd fds = { 0 };
+	struct msghdr msg = { 0 };
+	ssize_t sendmsg_res;
+	struct iovec *iovec;
+	int fd;
+
+	if (sock_seqpacket)
+		fd = vsock_seqpacket_connect(opts->peer_cid, 1234);
+	else
+		fd = vsock_stream_connect(opts->peer_cid, 1234);
+
+	if (fd < 0) {
+		perror("connect");
+		exit(EXIT_FAILURE);
+	}
+
+	if (test_data->so_zerocopy)
+		enable_so_zerocopy(fd);
+
+	iovec = alloc_test_iovec(test_data->vecs, test_data->vecs_cnt);
+
+	msg.msg_iov = iovec;
+	msg.msg_iovlen = test_data->vecs_cnt;
+
+	errno = 0;
+
+	sendmsg_res = sendmsg(fd, &msg, MSG_ZEROCOPY);
+	if (errno != test_data->sendmsg_errno) {
+		fprintf(stderr, "expected 'errno' == %i, got %i\n",
+			test_data->sendmsg_errno, errno);
+		exit(EXIT_FAILURE);
+	}
+
+	if (!errno) {
+		if (sendmsg_res != iovec_bytes(iovec, test_data->vecs_cnt)) {
+			fprintf(stderr, "expected 'sendmsg()' == %li, got %li\n",
+				iovec_bytes(iovec, test_data->vecs_cnt),
+				sendmsg_res);
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	fds.fd = fd;
+	fds.events = 0;
+
+	if (poll(&fds, 1, POLL_TIMEOUT_MS) < 0) {
+		perror("poll");
+		exit(EXIT_FAILURE);
+	}
+
+	if (fds.revents & POLLERR) {
+		vsock_recv_completion(fd, &test_data->zerocopied);
+	} else if (test_data->so_zerocopy && !test_data->sendmsg_errno) {
+		/* If we don't have data in the error queue, but
+		 * SO_ZEROCOPY was enabled and 'sendmsg()' was
+		 * successful - this is an error.
+		 */
+		fprintf(stderr, "POLLERR expected\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if (!test_data->sendmsg_errno)
+		control_writeulong(iovec_hash_djb2(iovec, test_data->vecs_cnt));
+	else
+		control_writeulong(0);
+
+	control_writeln("DONE");
+	free_test_iovec(test_data->vecs, iovec, test_data->vecs_cnt);
+	close(fd);
+}
+
+void test_stream_msgzcopy_client(const struct test_opts *opts)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
+		test_client(opts, &test_data_array[i], false);
+}
+
+void test_seqpacket_msgzcopy_client(const struct test_opts *opts)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(test_data_array); i++) {
+		if (test_data_array[i].stream_only)
+			continue;
+
+		test_client(opts, &test_data_array[i], true);
+	}
+}
+
+static void test_server(const struct test_opts *opts,
+			const struct vsock_test_data *test_data,
+			bool sock_seqpacket)
+{
+	unsigned long remote_hash;
+	unsigned long local_hash;
+	ssize_t total_bytes_rec;
+	unsigned char *data;
+	size_t data_len;
+	int fd;
+
+	if (sock_seqpacket)
+		fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL);
+	else
+		fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
+
+	if (fd < 0) {
+		perror("accept");
+		exit(EXIT_FAILURE);
+	}
+
+	data_len = iovec_bytes(test_data->vecs, test_data->vecs_cnt);
+
+	data = malloc(data_len);
+	if (!data) {
+		perror("malloc");
+		exit(EXIT_FAILURE);
+	}
+
+	total_bytes_rec = 0;
+
+	while (total_bytes_rec != data_len) {
+		ssize_t bytes_rec;
+
+		bytes_rec = read(fd, data + total_bytes_rec,
+				 data_len - total_bytes_rec);
+		if (bytes_rec <= 0)
+			break;
+
+		total_bytes_rec += bytes_rec;
+	}
+
+	if (test_data->sendmsg_errno == 0)
+		local_hash = hash_djb2(data, data_len);
+	else
+		local_hash = 0;
+
+	free(data);
+
+	/* Waiting for some result. */
+	remote_hash = control_readulong();
+	if (remote_hash != local_hash) {
+		fprintf(stderr, "hash mismatch\n");
+		exit(EXIT_FAILURE);
+	}
+
+	control_expectln("DONE");
+	close(fd);
+}
+
+void test_stream_msgzcopy_server(const struct test_opts *opts)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
+		test_server(opts, &test_data_array[i], false);
+}
+
+void test_seqpacket_msgzcopy_server(const struct test_opts *opts)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(test_data_array); i++) {
+		if (test_data_array[i].stream_only)
+			continue;
+
+		test_server(opts, &test_data_array[i], true);
+	}
+}
+
+void test_stream_msgzcopy_empty_errq_client(const struct test_opts *opts)
+{
+	struct msghdr msg = { 0 };
+	char cmsg_data[128];
+	ssize_t res;
+	int fd;
+
+	fd = vsock_stream_connect(opts->peer_cid, 1234);
+	if (fd < 0) {
+		perror("connect");
+		exit(EXIT_FAILURE);
+	}
+
+	msg.msg_control = cmsg_data;
+	msg.msg_controllen = sizeof(cmsg_data);
+
+	res = recvmsg(fd, &msg, MSG_ERRQUEUE);
+	if (res != -1) {
+		fprintf(stderr, "expected 'recvmsg(2)' failure, got %zi\n",
+			res);
+		exit(EXIT_FAILURE);
+	}
+
+	control_writeln("DONE");
+	close(fd);
+}
+
+void test_stream_msgzcopy_empty_errq_server(const struct test_opts *opts)
+{
+	int fd;
+
+	fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
+	if (fd < 0) {
+		perror("accept");
+		exit(EXIT_FAILURE);
+	}
+
+	control_expectln("DONE");
+	close(fd);
+}
diff --git a/tools/testing/vsock/vsock_test_zerocopy.h b/tools/testing/vsock/vsock_test_zerocopy.h
new file mode 100644
index 0000000000..3ef2579e02
--- /dev/null
+++ b/tools/testing/vsock/vsock_test_zerocopy.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef VSOCK_TEST_ZEROCOPY_H
+#define VSOCK_TEST_ZEROCOPY_H
+#include "util.h"
+
+void test_stream_msgzcopy_client(const struct test_opts *opts);
+void test_stream_msgzcopy_server(const struct test_opts *opts);
+
+void test_seqpacket_msgzcopy_client(const struct test_opts *opts);
+void test_seqpacket_msgzcopy_server(const struct test_opts *opts);
+
+void test_stream_msgzcopy_empty_errq_client(const struct test_opts *opts);
+void test_stream_msgzcopy_empty_errq_server(const struct test_opts *opts);
+
+#endif /* VSOCK_TEST_ZEROCOPY_H */
diff --git a/tools/testing/vsock/vsock_uring_test.c b/tools/testing/vsock/vsock_uring_test.c
new file mode 100644
index 0000000000..d976d35f0b
--- /dev/null
+++ b/tools/testing/vsock/vsock_uring_test.c
@@ -0,0 +1,342 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* io_uring tests for vsock
+ *
+ * Copyright (C) 2023 SberDevices.
+ *
+ * Author: Arseniy Krasnov <avkrasnov@salutedevices.com>
+ */
+
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <liburing.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <linux/kernel.h>
+#include <error.h>
+
+#include "util.h"
+#include "control.h"
+#include "msg_zerocopy_common.h"
+
+#ifndef PAGE_SIZE
+#define PAGE_SIZE		4096
+#endif
+
+#define RING_ENTRIES_NUM	4
+
+#define VSOCK_TEST_DATA_MAX_IOV 3
+
+struct vsock_io_uring_test {
+	/* Number of valid elements in 'vecs'. */
+	int vecs_cnt;
+	struct iovec vecs[VSOCK_TEST_DATA_MAX_IOV];
+};
+
+static struct vsock_io_uring_test test_data_array[] = {
+	/* All elements have page aligned base and size. */
+	{
+		.vecs_cnt = 3,
+		{
+			{ NULL, PAGE_SIZE },
+			{ NULL, 2 * PAGE_SIZE },
+			{ NULL, 3 * PAGE_SIZE },
+		}
+	},
+	/* Middle element has both non-page aligned base and size. */
+	{
+		.vecs_cnt = 3,
+		{
+			{ NULL, PAGE_SIZE },
+			{ (void *)1, 200  },
+			{ NULL, 3 * PAGE_SIZE },
+		}
+	}
+};
+
+static void vsock_io_uring_client(const struct test_opts *opts,
+				  const struct vsock_io_uring_test *test_data,
+				  bool msg_zerocopy)
+{
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	struct io_uring ring;
+	struct iovec *iovec;
+	struct msghdr msg;
+	int fd;
+
+	fd = vsock_stream_connect(opts->peer_cid, 1234);
+	if (fd < 0) {
+		perror("connect");
+		exit(EXIT_FAILURE);
+	}
+
+	if (msg_zerocopy)
+		enable_so_zerocopy(fd);
+
+	iovec = alloc_test_iovec(test_data->vecs, test_data->vecs_cnt);
+
+	if (io_uring_queue_init(RING_ENTRIES_NUM, &ring, 0))
+		error(1, errno, "io_uring_queue_init");
+
+	if (io_uring_register_buffers(&ring, iovec, test_data->vecs_cnt))
+		error(1, errno, "io_uring_register_buffers");
+
+	memset(&msg, 0, sizeof(msg));
+	msg.msg_iov = iovec;
+	msg.msg_iovlen = test_data->vecs_cnt;
+	sqe = io_uring_get_sqe(&ring);
+
+	if (msg_zerocopy)
+		io_uring_prep_sendmsg_zc(sqe, fd, &msg, 0);
+	else
+		io_uring_prep_sendmsg(sqe, fd, &msg, 0);
+
+	if (io_uring_submit(&ring) != 1)
+		error(1, errno, "io_uring_submit");
+
+	if (io_uring_wait_cqe(&ring, &cqe))
+		error(1, errno, "io_uring_wait_cqe");
+
+	io_uring_cqe_seen(&ring, cqe);
+
+	control_writeulong(iovec_hash_djb2(iovec, test_data->vecs_cnt));
+
+	control_writeln("DONE");
+	io_uring_queue_exit(&ring);
+	free_test_iovec(test_data->vecs, iovec, test_data->vecs_cnt);
+	close(fd);
+}
+
+static void vsock_io_uring_server(const struct test_opts *opts,
+				  const struct vsock_io_uring_test *test_data)
+{
+	unsigned long remote_hash;
+	unsigned long local_hash;
+	struct io_uring ring;
+	size_t data_len;
+	size_t recv_len;
+	void *data;
+	int fd;
+
+	fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
+	if (fd < 0) {
+		perror("accept");
+		exit(EXIT_FAILURE);
+	}
+
+	data_len = iovec_bytes(test_data->vecs, test_data->vecs_cnt);
+
+	data = malloc(data_len);
+	if (!data) {
+		perror("malloc");
+		exit(EXIT_FAILURE);
+	}
+
+	if (io_uring_queue_init(RING_ENTRIES_NUM, &ring, 0))
+		error(1, errno, "io_uring_queue_init");
+
+	recv_len = 0;
+
+	while (recv_len < data_len) {
+		struct io_uring_sqe *sqe;
+		struct io_uring_cqe *cqe;
+		struct iovec iovec;
+
+		sqe = io_uring_get_sqe(&ring);
+		iovec.iov_base = data + recv_len;
+		iovec.iov_len = data_len;
+
+		io_uring_prep_readv(sqe, fd, &iovec, 1, 0);
+
+		if (io_uring_submit(&ring) != 1)
+			error(1, errno, "io_uring_submit");
+
+		if (io_uring_wait_cqe(&ring, &cqe))
+			error(1, errno, "io_uring_wait_cqe");
+
+		recv_len += cqe->res;
+		io_uring_cqe_seen(&ring, cqe);
+	}
+
+	if (recv_len != data_len) {
+		fprintf(stderr, "expected %zu, got %zu\n", data_len,
+			recv_len);
+		exit(EXIT_FAILURE);
+	}
+
+	local_hash = hash_djb2(data, data_len);
+
+	remote_hash = control_readulong();
+	if (remote_hash != local_hash) {
+		fprintf(stderr, "hash mismatch\n");
+		exit(EXIT_FAILURE);
+	}
+
+	control_expectln("DONE");
+	io_uring_queue_exit(&ring);
+	free(data);
+}
+
+void test_stream_uring_server(const struct test_opts *opts)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
+		vsock_io_uring_server(opts, &test_data_array[i]);
+}
+
+void test_stream_uring_client(const struct test_opts *opts)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
+		vsock_io_uring_client(opts, &test_data_array[i], false);
+}
+
+void test_stream_uring_msg_zc_server(const struct test_opts *opts)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
+		vsock_io_uring_server(opts, &test_data_array[i]);
+}
+
+void test_stream_uring_msg_zc_client(const struct test_opts *opts)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
+		vsock_io_uring_client(opts, &test_data_array[i], true);
+}
+
+static struct test_case test_cases[] = {
+	{
+		.name = "SOCK_STREAM io_uring test",
+		.run_server = test_stream_uring_server,
+		.run_client = test_stream_uring_client,
+	},
+	{
+		.name = "SOCK_STREAM io_uring MSG_ZEROCOPY test",
+		.run_server = test_stream_uring_msg_zc_server,
+		.run_client = test_stream_uring_msg_zc_client,
+	},
+	{},
+};
+
+static const char optstring[] = "";
+static const struct option longopts[] = {
+	{
+		.name = "control-host",
+		.has_arg = required_argument,
+		.val = 'H',
+	},
+	{
+		.name = "control-port",
+		.has_arg = required_argument,
+		.val = 'P',
+	},
+	{
+		.name = "mode",
+		.has_arg = required_argument,
+		.val = 'm',
+	},
+	{
+		.name = "peer-cid",
+		.has_arg = required_argument,
+		.val = 'p',
+	},
+	{
+		.name = "help",
+		.has_arg = no_argument,
+		.val = '?',
+	},
+	{},
+};
+
+static void usage(void)
+{
+	fprintf(stderr, "Usage: vsock_uring_test [--help] [--control-host=<host>] --control-port=<port> --mode=client|server --peer-cid=<cid>\n"
+		"\n"
+		"  Server: vsock_uring_test --control-port=1234 --mode=server --peer-cid=3\n"
+		"  Client: vsock_uring_test --control-host=192.168.0.1 --control-port=1234 --mode=client --peer-cid=2\n"
+		"\n"
+		"Run transmission tests using io_uring. Usage is the same as\n"
+		"in ./vsock_test\n"
+		"\n"
+		"Options:\n"
+		"  --help                 This help message\n"
+		"  --control-host <host>  Server IP address to connect to\n"
+		"  --control-port <port>  Server port to listen on/connect to\n"
+		"  --mode client|server   Server or client mode\n"
+		"  --peer-cid <cid>       CID of the other side\n"
+		);
+	exit(EXIT_FAILURE);
+}
+
+int main(int argc, char **argv)
+{
+	const char *control_host = NULL;
+	const char *control_port = NULL;
+	struct test_opts opts = {
+		.mode = TEST_MODE_UNSET,
+		.peer_cid = VMADDR_CID_ANY,
+	};
+
+	init_signals();
+
+	for (;;) {
+		int opt = getopt_long(argc, argv, optstring, longopts, NULL);
+
+		if (opt == -1)
+			break;
+
+		switch (opt) {
+		case 'H':
+			control_host = optarg;
+			break;
+		case 'm':
+			if (strcmp(optarg, "client") == 0) {
+				opts.mode = TEST_MODE_CLIENT;
+			} else if (strcmp(optarg, "server") == 0) {
+				opts.mode = TEST_MODE_SERVER;
+			} else {
+				fprintf(stderr, "--mode must be \"client\" or \"server\"\n");
+				return EXIT_FAILURE;
+			}
+			break;
+		case 'p':
+			opts.peer_cid = parse_cid(optarg);
+			break;
+		case 'P':
+			control_port = optarg;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	}
+
+	if (!control_port)
+		usage();
+	if (opts.mode == TEST_MODE_UNSET)
+		usage();
+	if (opts.peer_cid == VMADDR_CID_ANY)
+		usage();
+
+	if (!control_host) {
+		if (opts.mode != TEST_MODE_SERVER)
+			usage();
+		control_host = "0.0.0.0";
+	}
+
+	control_init(control_host, control_port,
+		     opts.mode == TEST_MODE_SERVER);
+
+	run_tests(test_cases, &opts);
+
+	control_cleanup();
+
+	return 0;
+}