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[SCSI] libfc: rport retry on LS_RJT from certain ELS

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This allows any rport ELS to retry on LS_RJT.

The rport error handling would only retry on resource allocation failures
and exchange timeouts.  I have a target that will occasionally reject PLOGI
when we do a quick LOGO/PLOGI.  When a critical ELS was rejected, libfc would
fail silently leaving the rport in a dead state.

The retry count and delay are managed by fc_rport_error_retry.  If the retry
count is exceeded fc_rport_error will be called.  When retrying is not the
correct course of action, fc_rport_error can be called directly.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Chris Leech
2009-02-27 10:55:02 -08:00
committed by James Bottomley
parent bc0e17f691
commit 6755db1cd4
3 changed files with 69 additions and 49 deletions
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2
drivers/scsi/libfc/fc_exch.c
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@ -32,8 +32,6 @@
#include <scsi/libfc.h>
#include <scsi/fc_encode.h>
#define FC_DEF_R_A_TOV (10 * 1000) /* resource allocation timeout */
/*
* fc_exch_debug can be set in debugger or at compile time to get more logs.
*/