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[lwip-devel] [bug #38586] netif_loop_output() "deadlocks"
From: |
Emil Ljungdahl |
Subject: |
[lwip-devel] [bug #38586] netif_loop_output() "deadlocks" |
Date: |
Mon, 25 Mar 2013 10:53:01 +0000 |
User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0 |
URL:
<http://savannah.nongnu.org/bugs/?38586>
Summary: netif_loop_output() "deadlocks"
Project: lwIP - A Lightweight TCP/IP stack
Submitted by: emil_ljungdahl
Submitted on: Mon 25 Mar 2013 10:53:00 AM GMT
Category: None
Severity: 3 - Normal
Item Group: Faulty Behaviour
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Planned Release:
lwIP version: git head
_______________________________________________________
Details:
I ran into a problem where the lwip core task hanged in sys_mbox_post()
because of a full message queue. The problems seems to be that
core/netif.c:netif_loop_output() calls tcpip_callback() which will wait for
message to be posted, but since the current task is the only one eating
messages we are stuck...
Am I right the call should be replaced by a
tcpip_callback_with_block((tcpip_callback_fn)netif_poll, netif, 0);
?
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Mon 25 Mar 2013 10:53:00 AM GMT Name: netif_c.diff Size: 510B By:
emil_ljungdahl
<http://savannah.nongnu.org/bugs/download.php?file_id=27674>
_______________________________________________________
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