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authorPaolo Abeni <pabeni@redhat.com>2024-12-05 11:39:36 +0100
committerPaolo Abeni <pabeni@redhat.com>2024-12-05 11:39:36 +0100
commit0e21a47c8303f9cc2efe0495f58c2b1ff76080a5 (patch)
tree4824227ceb3657fbbccdab4ea9d6d0a20a7e7c10
parent4615855ea8c42aff76cc7772509445dc80bcd917 (diff)
parent86814d8ffd55fd4ad19c512eccd721522a370fb2 (diff)
Merge branch 'vsock-test-fix-wrong-setsockopt-parameters'
Konstantin Shkolnyy says: ==================== vsock/test: fix wrong setsockopt() parameters Parameters were created using wrong C types, which caused them to be of wrong size on some architectures, causing problems. The problem with SO_RCVLOWAT was found on s390 (big endian), while x86-64 didn't show it. After the fix, all tests pass on s390. Then Stefano Garzarella pointed out that SO_VM_SOCKETS_* calls might have a similar problem, which turned out to be true, hence, the second patch. Changes for v8: - Fix whitespace warnings from "checkpatch.pl --strict" - Add maintainers to Cc: Changes for v7: - Rebase on top of https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git - Add the "net" tags to the subjects Changes for v6: - rework the patch #3 to avoid creating a new file for new functions, and exclude vsock_perf from calling the new functions. - add "Reviewed-by:" to the patch #2. Changes for v5: - in the patch #2 replace the introduced uint64_t with unsigned long long to match documentation - add a patch #3 that verifies every setsockopt() call. Changes for v4: - add "Reviewed-by:" to the first patch, and add a second patch fixing SO_VM_SOCKETS_* calls, which depends on the first one (hence, it's now a patch series.) Changes for v3: - fix the same problem in vsock_perf and update commit message Changes for v2: - add "Fixes:" lines to the commit message ==================== Link: https://patch.msgid.link/20241203150656.287028-1-kshk@linux.ibm.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
-rw-r--r--tools/testing/vsock/control.c9
-rw-r--r--tools/testing/vsock/msg_zerocopy_common.c10
-rw-r--r--tools/testing/vsock/msg_zerocopy_common.h1
-rw-r--r--tools/testing/vsock/util.c142
-rw-r--r--tools/testing/vsock/util.h7
-rw-r--r--tools/testing/vsock/vsock_perf.c20
-rw-r--r--tools/testing/vsock/vsock_test.c75
-rw-r--r--tools/testing/vsock/vsock_test_zerocopy.c2
-rw-r--r--tools/testing/vsock/vsock_uring_test.c2
9 files changed, 204 insertions, 64 deletions
diff --git a/tools/testing/vsock/control.c b/tools/testing/vsock/control.c
index d2deb4b15b94..0066e0324d35 100644
--- a/tools/testing/vsock/control.c
+++ b/tools/testing/vsock/control.c
@@ -27,6 +27,7 @@
#include "timeout.h"
#include "control.h"
+#include "util.h"
static int control_fd = -1;
@@ -50,7 +51,6 @@ void control_init(const char *control_host,
for (ai = result; ai; ai = ai->ai_next) {
int fd;
- int val = 1;
fd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (fd < 0)
@@ -65,11 +65,8 @@ void control_init(const char *control_host,
break;
}
- if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
- &val, sizeof(val)) < 0) {
- perror("setsockopt");
- exit(EXIT_FAILURE);
- }
+ setsockopt_int_check(fd, SOL_SOCKET, SO_REUSEADDR, 1,
+ "setsockopt SO_REUSEADDR");
if (bind(fd, ai->ai_addr, ai->ai_addrlen) < 0)
goto next;
diff --git a/tools/testing/vsock/msg_zerocopy_common.c b/tools/testing/vsock/msg_zerocopy_common.c
index 5a4bdf7b5132..8622e5a0f8b7 100644
--- a/tools/testing/vsock/msg_zerocopy_common.c
+++ b/tools/testing/vsock/msg_zerocopy_common.c
@@ -14,16 +14,6 @@
#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;
diff --git a/tools/testing/vsock/msg_zerocopy_common.h b/tools/testing/vsock/msg_zerocopy_common.h
index 3763c5ccedb9..ad14139e93ca 100644
--- a/tools/testing/vsock/msg_zerocopy_common.h
+++ b/tools/testing/vsock/msg_zerocopy_common.h
@@ -12,7 +12,6 @@
#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 a3d448a075e3..34e9dac0a105 100644
--- a/tools/testing/vsock/util.c
+++ b/tools/testing/vsock/util.c
@@ -651,3 +651,145 @@ void free_test_iovec(const struct iovec *test_iovec,
free(iovec);
}
+
+/* Set "unsigned long long" socket option and check that it's indeed set */
+void setsockopt_ull_check(int fd, int level, int optname,
+ unsigned long long val, char const *errmsg)
+{
+ unsigned long long chkval;
+ socklen_t chklen;
+ int err;
+
+ err = setsockopt(fd, level, optname, &val, sizeof(val));
+ if (err) {
+ fprintf(stderr, "setsockopt err: %s (%d)\n",
+ strerror(errno), errno);
+ goto fail;
+ }
+
+ chkval = ~val; /* just make storage != val */
+ chklen = sizeof(chkval);
+
+ err = getsockopt(fd, level, optname, &chkval, &chklen);
+ if (err) {
+ fprintf(stderr, "getsockopt err: %s (%d)\n",
+ strerror(errno), errno);
+ goto fail;
+ }
+
+ if (chklen != sizeof(chkval)) {
+ fprintf(stderr, "size mismatch: set %zu got %d\n", sizeof(val),
+ chklen);
+ goto fail;
+ }
+
+ if (chkval != val) {
+ fprintf(stderr, "value mismatch: set %llu got %llu\n", val,
+ chkval);
+ goto fail;
+ }
+ return;
+fail:
+ fprintf(stderr, "%s val %llu\n", errmsg, val);
+ exit(EXIT_FAILURE);
+;
+}
+
+/* Set "int" socket option and check that it's indeed set */
+void setsockopt_int_check(int fd, int level, int optname, int val,
+ char const *errmsg)
+{
+ int chkval;
+ socklen_t chklen;
+ int err;
+
+ err = setsockopt(fd, level, optname, &val, sizeof(val));
+ if (err) {
+ fprintf(stderr, "setsockopt err: %s (%d)\n",
+ strerror(errno), errno);
+ goto fail;
+ }
+
+ chkval = ~val; /* just make storage != val */
+ chklen = sizeof(chkval);
+
+ err = getsockopt(fd, level, optname, &chkval, &chklen);
+ if (err) {
+ fprintf(stderr, "getsockopt err: %s (%d)\n",
+ strerror(errno), errno);
+ goto fail;
+ }
+
+ if (chklen != sizeof(chkval)) {
+ fprintf(stderr, "size mismatch: set %zu got %d\n", sizeof(val),
+ chklen);
+ goto fail;
+ }
+
+ if (chkval != val) {
+ fprintf(stderr, "value mismatch: set %d got %d\n", val, chkval);
+ goto fail;
+ }
+ return;
+fail:
+ fprintf(stderr, "%s val %d\n", errmsg, val);
+ exit(EXIT_FAILURE);
+}
+
+static void mem_invert(unsigned char *mem, size_t size)
+{
+ size_t i;
+
+ for (i = 0; i < size; i++)
+ mem[i] = ~mem[i];
+}
+
+/* Set "timeval" socket option and check that it's indeed set */
+void setsockopt_timeval_check(int fd, int level, int optname,
+ struct timeval val, char const *errmsg)
+{
+ struct timeval chkval;
+ socklen_t chklen;
+ int err;
+
+ err = setsockopt(fd, level, optname, &val, sizeof(val));
+ if (err) {
+ fprintf(stderr, "setsockopt err: %s (%d)\n",
+ strerror(errno), errno);
+ goto fail;
+ }
+
+ /* just make storage != val */
+ chkval = val;
+ mem_invert((unsigned char *)&chkval, sizeof(chkval));
+ chklen = sizeof(chkval);
+
+ err = getsockopt(fd, level, optname, &chkval, &chklen);
+ if (err) {
+ fprintf(stderr, "getsockopt err: %s (%d)\n",
+ strerror(errno), errno);
+ goto fail;
+ }
+
+ if (chklen != sizeof(chkval)) {
+ fprintf(stderr, "size mismatch: set %zu got %d\n", sizeof(val),
+ chklen);
+ goto fail;
+ }
+
+ if (memcmp(&chkval, &val, sizeof(val)) != 0) {
+ fprintf(stderr, "value mismatch: set %ld:%ld got %ld:%ld\n",
+ val.tv_sec, val.tv_usec, chkval.tv_sec, chkval.tv_usec);
+ goto fail;
+ }
+ return;
+fail:
+ fprintf(stderr, "%s val %ld:%ld\n", errmsg, val.tv_sec, val.tv_usec);
+ exit(EXIT_FAILURE);
+}
+
+void enable_so_zerocopy_check(int fd)
+{
+ setsockopt_int_check(fd, SOL_SOCKET, SO_ZEROCOPY, 1,
+ "setsockopt SO_ZEROCOPY");
+}
diff --git a/tools/testing/vsock/util.h b/tools/testing/vsock/util.h
index fff22d4a14c0..ba84d296d8b7 100644
--- a/tools/testing/vsock/util.h
+++ b/tools/testing/vsock/util.h
@@ -68,4 +68,11 @@ 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);
+void setsockopt_ull_check(int fd, int level, int optname,
+ unsigned long long val, char const *errmsg);
+void setsockopt_int_check(int fd, int level, int optname, int val,
+ char const *errmsg);
+void setsockopt_timeval_check(int fd, int level, int optname,
+ struct timeval val, char const *errmsg);
+void enable_so_zerocopy_check(int fd);
#endif /* UTIL_H */
diff --git a/tools/testing/vsock/vsock_perf.c b/tools/testing/vsock/vsock_perf.c
index 4e8578f815e0..75971ac708c9 100644
--- a/tools/testing/vsock/vsock_perf.c
+++ b/tools/testing/vsock/vsock_perf.c
@@ -33,7 +33,7 @@
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 unsigned long long vsock_buf_bytes = DEFAULT_VSOCK_BUF_BYTES;
static bool zerocopy;
static void error(const char *s)
@@ -133,7 +133,7 @@ static float get_gbps(unsigned long bits, time_t ns_delta)
((float)ns_delta / NSEC_PER_SEC);
}
-static void run_receiver(unsigned long rcvlowat_bytes)
+static void run_receiver(int rcvlowat_bytes)
{
unsigned int read_cnt;
time_t rx_begin_ns;
@@ -162,8 +162,8 @@ static void run_receiver(unsigned long rcvlowat_bytes)
printf("Run as receiver\n");
printf("Listen port %u\n", port);
printf("RX buffer %lu bytes\n", buf_size_bytes);
- printf("vsock buffer %lu bytes\n", vsock_buf_bytes);
- printf("SO_RCVLOWAT %lu bytes\n", rcvlowat_bytes);
+ printf("vsock buffer %llu bytes\n", vsock_buf_bytes);
+ printf("SO_RCVLOWAT %d bytes\n", rcvlowat_bytes);
fd = socket(AF_VSOCK, SOCK_STREAM, 0);
@@ -251,6 +251,16 @@ static void run_receiver(unsigned long rcvlowat_bytes)
close(fd);
}
+static void enable_so_zerocopy(int fd)
+{
+ int val = 1;
+
+ if (setsockopt(fd, SOL_SOCKET, SO_ZEROCOPY, &val, sizeof(val))) {
+ perror("setsockopt");
+ exit(EXIT_FAILURE);
+ }
+}
+
static void run_sender(int peer_cid, unsigned long to_send_bytes)
{
time_t tx_begin_ns;
@@ -439,7 +449,7 @@ static long strtolx(const char *arg)
int main(int argc, char **argv)
{
unsigned long to_send_bytes = DEFAULT_TO_SEND_BYTES;
- unsigned long rcvlowat_bytes = DEFAULT_RCVLOWAT_BYTES;
+ int rcvlowat_bytes = DEFAULT_RCVLOWAT_BYTES;
int peer_cid = -1;
bool sender = false;
diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 8d38dbf8f41f..48f17641ca50 100644
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -429,7 +429,7 @@ static void test_seqpacket_msg_bounds_client(const struct test_opts *opts)
static void test_seqpacket_msg_bounds_server(const struct test_opts *opts)
{
- unsigned long sock_buf_size;
+ unsigned long long sock_buf_size;
unsigned long remote_hash;
unsigned long curr_hash;
int fd;
@@ -444,17 +444,13 @@ static void test_seqpacket_msg_bounds_server(const struct test_opts *opts)
sock_buf_size = SOCK_BUF_SIZE;
- if (setsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_MAX_SIZE,
- &sock_buf_size, sizeof(sock_buf_size))) {
- perror("setsockopt(SO_VM_SOCKETS_BUFFER_MAX_SIZE)");
- exit(EXIT_FAILURE);
- }
+ setsockopt_ull_check(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_MAX_SIZE,
+ sock_buf_size,
+ "setsockopt(SO_VM_SOCKETS_BUFFER_MAX_SIZE)");
- if (setsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_SIZE,
- &sock_buf_size, sizeof(sock_buf_size))) {
- perror("setsockopt(SO_VM_SOCKETS_BUFFER_SIZE)");
- exit(EXIT_FAILURE);
- }
+ setsockopt_ull_check(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_SIZE,
+ sock_buf_size,
+ "setsockopt(SO_VM_SOCKETS_BUFFER_SIZE)");
/* Ready to receive data. */
control_writeln("SRVREADY");
@@ -586,10 +582,8 @@ static void test_seqpacket_timeout_client(const struct test_opts *opts)
tv.tv_sec = RCVTIMEO_TIMEOUT_SEC;
tv.tv_usec = 0;
- if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv)) == -1) {
- perror("setsockopt(SO_RCVTIMEO)");
- exit(EXIT_FAILURE);
- }
+ setsockopt_timeval_check(fd, SOL_SOCKET, SO_RCVTIMEO, tv,
+ "setsockopt(SO_RCVTIMEO)");
read_enter_ns = current_nsec();
@@ -634,7 +628,8 @@ 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;
+ unsigned long long sock_buf_size;
+ size_t buf_size;
socklen_t len;
void *data;
int fd;
@@ -655,13 +650,20 @@ static void test_seqpacket_bigmsg_client(const struct test_opts *opts)
sock_buf_size++;
- data = malloc(sock_buf_size);
+ /* size_t can be < unsigned long long */
+ buf_size = (size_t)sock_buf_size;
+ if (buf_size != sock_buf_size) {
+ fprintf(stderr, "Returned BUFFER_SIZE too large\n");
+ exit(EXIT_FAILURE);
+ }
+
+ data = malloc(buf_size);
if (!data) {
perror("malloc");
exit(EXIT_FAILURE);
}
- send_buf(fd, data, sock_buf_size, 0, -EMSGSIZE);
+ send_buf(fd, data, buf_size, 0, -EMSGSIZE);
control_writeln("CLISENT");
@@ -835,7 +837,7 @@ static void test_stream_poll_rcvlowat_server(const struct test_opts *opts)
static void test_stream_poll_rcvlowat_client(const struct test_opts *opts)
{
- unsigned long lowat_val = RCVLOWAT_BUF_SIZE;
+ int lowat_val = RCVLOWAT_BUF_SIZE;
char buf[RCVLOWAT_BUF_SIZE];
struct pollfd fds;
short poll_flags;
@@ -847,11 +849,8 @@ static void test_stream_poll_rcvlowat_client(const struct test_opts *opts)
exit(EXIT_FAILURE);
}
- if (setsockopt(fd, SOL_SOCKET, SO_RCVLOWAT,
- &lowat_val, sizeof(lowat_val))) {
- perror("setsockopt(SO_RCVLOWAT)");
- exit(EXIT_FAILURE);
- }
+ setsockopt_int_check(fd, SOL_SOCKET, SO_RCVLOWAT,
+ lowat_val, "setsockopt(SO_RCVLOWAT)");
control_expectln("SRVSENT");
@@ -1357,9 +1356,10 @@ static void test_stream_rcvlowat_def_cred_upd_client(const struct test_opts *opt
static void test_stream_credit_update_test(const struct test_opts *opts,
bool low_rx_bytes_test)
{
- size_t recv_buf_size;
+ int recv_buf_size;
struct pollfd fds;
size_t buf_size;
+ unsigned long long sock_buf_size;
void *buf;
int fd;
@@ -1371,11 +1371,12 @@ static void test_stream_credit_update_test(const struct test_opts *opts,
buf_size = RCVLOWAT_CREDIT_UPD_BUF_SIZE;
- if (setsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_SIZE,
- &buf_size, sizeof(buf_size))) {
- perror("setsockopt(SO_VM_SOCKETS_BUFFER_SIZE)");
- exit(EXIT_FAILURE);
- }
+ /* size_t can be < unsigned long long */
+ sock_buf_size = buf_size;
+
+ setsockopt_ull_check(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_SIZE,
+ sock_buf_size,
+ "setsockopt(SO_VM_SOCKETS_BUFFER_SIZE)");
if (low_rx_bytes_test) {
/* Set new SO_RCVLOWAT here. This enables sending credit
@@ -1384,11 +1385,8 @@ static void test_stream_credit_update_test(const struct test_opts *opts,
*/
recv_buf_size = 1 + VIRTIO_VSOCK_MAX_PKT_BUF_SIZE;
- if (setsockopt(fd, SOL_SOCKET, SO_RCVLOWAT,
- &recv_buf_size, sizeof(recv_buf_size))) {
- perror("setsockopt(SO_RCVLOWAT)");
- exit(EXIT_FAILURE);
- }
+ setsockopt_int_check(fd, SOL_SOCKET, SO_RCVLOWAT,
+ recv_buf_size, "setsockopt(SO_RCVLOWAT)");
}
/* Send one dummy byte here, because 'setsockopt()' above also
@@ -1430,11 +1428,8 @@ static void test_stream_credit_update_test(const struct test_opts *opts,
recv_buf_size++;
/* Updating SO_RCVLOWAT will send credit update. */
- if (setsockopt(fd, SOL_SOCKET, SO_RCVLOWAT,
- &recv_buf_size, sizeof(recv_buf_size))) {
- perror("setsockopt(SO_RCVLOWAT)");
- exit(EXIT_FAILURE);
- }
+ setsockopt_int_check(fd, SOL_SOCKET, SO_RCVLOWAT,
+ recv_buf_size, "setsockopt(SO_RCVLOWAT)");
}
fds.fd = fd;
diff --git a/tools/testing/vsock/vsock_test_zerocopy.c b/tools/testing/vsock/vsock_test_zerocopy.c
index 04c376b6937f..9d9a6cb9614a 100644
--- a/tools/testing/vsock/vsock_test_zerocopy.c
+++ b/tools/testing/vsock/vsock_test_zerocopy.c
@@ -162,7 +162,7 @@ static void test_client(const struct test_opts *opts,
}
if (test_data->so_zerocopy)
- enable_so_zerocopy(fd);
+ enable_so_zerocopy_check(fd);
iovec = alloc_test_iovec(test_data->vecs, test_data->vecs_cnt);
diff --git a/tools/testing/vsock/vsock_uring_test.c b/tools/testing/vsock/vsock_uring_test.c
index 6c3e6f70c457..5c3078969659 100644
--- a/tools/testing/vsock/vsock_uring_test.c
+++ b/tools/testing/vsock/vsock_uring_test.c
@@ -73,7 +73,7 @@ static void vsock_io_uring_client(const struct test_opts *opts,
}
if (msg_zerocopy)
- enable_so_zerocopy(fd);
+ enable_so_zerocopy_check(fd);
iovec = alloc_test_iovec(test_data->vecs, test_data->vecs_cnt);