[asterisk-bugs] [DAHDI-linux 0014834]: [patch] HDLC packets doesn't pass over D-channel (driver wcb4xxp, card B410)

Thu Jan 20 23:32:24 CST 2011

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=14834 
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Reported By:                vvv
Assigned To:                sruffell
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Project:                    DAHDI-linux
Issue ID:                   14834
Category:                   wcb4xxp
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     closed
JIRA:                        
Reviewboard Link:            
Resolution:                 fixed
Fixed in Version:           
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Date Submitted:             2009-04-06 07:05 CDT
Last Modified:              2011-01-20 23:32 CST
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Summary:                    [patch] HDLC packets doesn't pass over D-channel
(driver wcb4xxp, card B410)
Description: 
dahdi/wcb4xxp driver used with Digium Wildcard B410 quad-BRI PCI card
unable to communicate with another ISDN device (ISDN phone, another port of
B410). It appears that B-channels are capable to transport data, but
D-channel is not.

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 (0130846) svnbot (reporter) - 2011-01-20 23:32
 https://issues.asterisk.org/view.php?id=14834#c130846 
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Repository: dahdi
Revision: 9689

U   linux/branches/2.4/drivers/dahdi/wcb4xxp/base.c

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r9689 | sruffell | 2011-01-20 23:32:24 -0600 (Thu, 20 Jan 2011) | 23 lines

wcb4xxp: HDLC packets do not pass over D-channel.

dahdi/wcb4xxp driver used with Digium Wildcard B410 quad-BRI PCI card
unable to communicate with another ISDN device (ISDN phone, another port
of B410). It appears that B-channels are capable to transport data, but
D-channel is not.

Debug output added into the driver shows that packets are transmitted to
the D-channel, but no packets are received. Further investigation shows
that no interrupts received from Rx FIFO associated with D-channel,
although packets are delivered to the FIFO. I've found that problem is
in improper usage of chan->chanpos while indexing the fifo index
(bspan->fifos): chanpos starts from 1 and fifos starts from 0.
Therefore, garbage read instead of fifo number.

(closes issue https://issues.asterisk.org/view.php?id=14834)
Reported by: vvv
Patches:
      dahdi-linux-complete-2.2.0-rc1.patch uploaded by vvv (license 741)

Signed-off-by: Shaun Ruffell <sruffell at digium.com>

Origin: http://svnview.digium.com/svn/dahdi?view=rev&rev=9555
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http://svn.digium.com/view/dahdi?view=rev&revision=9689 

Issue History 
Date Modified    Username       Field                    Change               
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2011-01-20 23:32 svnbot         Checkin                                      
2011-01-20 23:32 svnbot         Note Added: 0130846                          
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