[lwip-devel] [patch #8737] tcp_timer_needed should use tcpip_timeout

[Robert Szewczyk]

URL:
  <http://savannah.nongnu.org/patch/?8737>

                 Summary: tcp_timer_needed should use tcpip_timeout
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: robszewczyk
            Submitted on: Fri 11 Sep 2015 05:13:33 PM GMT
                Category: None
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None

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Details:

When tcp_connect is called from a different thread, it is possible that the
tcp timers do not get started properly.  This happens when there are no TCP
timers active and the SYN packet is lost (or not responded to). Previous code
would simply adjust the timer queue, but not fix the LwIP wakeup schedule; in
the absence of active timers and incoming packets, there would be nothing to
wakeup the LwIP thread to adjust the wakeup to reflect the new state of the
timer queue.  This patch replaces the direct call to sys_timeout with a
tcpip_timeout call that wakes up the LwIP thread.




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File Attachments:


-------------------------------------------------------
Date: Fri 11 Sep 2015 05:13:33 PM GMT  Name:
0001-tcp_timer_needed-should-use-tcpip_timeout.patch  Size: 1kB   By:
robszewczyk

<http://savannah.nongnu.org/patch/download.php?file_id=34861>

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