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tcp_poll:Modify the TCP poll processing strategy when the network driver is down #192

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merged 1 commit into from
Feb 25, 2025
Merged

tcp_poll:Modify the TCP poll processing strategy when the network driver is down #192

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9 changes: 9 additions & 0 deletions net/tcp/tcp_netpoll.c
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Original file line number Diff line number Diff line change
Expand Up @@ -238,6 +238,14 @@ int tcp_pollsetup(FAR struct socket *psock, FAR struct pollfd *fds)
}
}

if (conn->dev &&
!(netdev_verify(conn->dev) && IFF_IS_UP(conn->dev->d_flags)))
{
_SO_CONN_SETERRNO(conn, ENETDOWN);
eventset |= POLLERR | POLLHUP;
goto notify;
}

/* Allocate a TCP/IP callback structure */

cb = tcp_callback_alloc(conn);
Expand Down Expand Up @@ -356,6 +364,7 @@ int tcp_pollsetup(FAR struct socket *psock, FAR struct pollfd *fds)

/* Check if any requested events are already in effect */

notify:
poll_notify(&fds, 1, eventset);

errout_with_lock:
Expand Down
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