SNTP doesn't work on v2.4.0 on eswifi

[micholek]

Describe the bug
Calling sntp_simple() results in error:

[00:00:08.670,000] <err> net_sntp: Error in poll:116

To Reproduce
Use the following code on disco_l475_iot1, compile with west (west build -b disco_l475_iot1 .):

struct sntp_time time;
const uint32_t timeout_ms = 5000;
if (sntp_simple("time.nist.gov", timeout_ms, &time)) {
    printf("Failed to get current time");
}

Expected behavior
time should be set to the current timestamp.

Impact
The bug forces the application to use older version of zephyr (v2.3.0).

Environment (please complete the following information):

• OS: Linux
• Toolchain: Zephyr SDK
• Version: v2.4.0

Additional context
I think the problem originates somewhere from eswifi_socket_ioctl function:

#0  eswifi_socket_ioctl (obj=0x2, request=260, args=...) at /home/michal/zephyrproject/zephyr/drivers/wifi/eswifi/eswifi_socket_offload.c:522
#1  0x08047128 in z_fdtable_call_ioctl (vtable=vtable@entry=0x805bbb8 <eswifi_socket_fd_op_vtable>, obj=obj@entry=0x2, request=260) at /home/michal/zephyrproject/zephyr/include/sys/fdtable.h:123
#2  0x08007786 in z_impl_zsock_poll (fds=fds@entry=0x20009a24 <z_main_stack+15916>, nfds=1, poll_timeout=poll_timeout@entry=400) at /home/michal/zephyrproject/zephyr/subsys/net/lib/sockets/sockets.c:1325
#3  0x08001c1e in zsock_poll (timeout=400, nfds=<optimized out>, fds=0x20009a24 <z_main_stack+15916>) at zephyr/include/generated/syscalls/socket.h:202
#4  poll (timeout=400, nfds=<optimized out>, fds=0x20009a24 <z_main_stack+15916>) at /home/michal/zephyrproject/zephyr/include/posix/poll.h:25
#5  sntp_recv_response (time=0x20009a58 <z_main_stack+15968>, timeout=400, sntp=0x20009a24 <z_main_stack+15916>) at /home/michal/zephyrproject/zephyr/subsys/net/lib/sntp/sntp.c:109
#6  sntp_query (ctx=ctx@entry=0x20009a24 <z_main_stack+15916>, timeout=timeout@entry=400, time=time@entry=0x20009a58 <z_main_stack+15968>) at /home/michal/zephyrproject/zephyr/subsys/net/lib/sntp/sntp.c:205
#7  0x080072f8 in sntp_simple (server=server@entry=0x8060110 "time.nist.gov", timeout=timeout@entry=5000, time=time@entry=0x20009a58 <z_main_stack+15968>) at /home/michal/zephyrproject/zephyr/subsys/net/lib/sntp/sntp_simple.c:49

[nandojve]

CC: @erwango

[github-actions]

This issue has been marked as stale because it has been open (more than) 60 days with no activity. Remove the stale label or add a comment saying that you would like to have the label removed otherwise this issue will automatically be closed in 14 days. Note, that you can always re-open a closed issue at any time.