From: Joe Eykholt Date: Tue, 25 Aug 2009 21:03:36 +0000 (-0700) Subject: [SCSI] libfc: re-login to remote ports that send us LOGO X-Git-Tag: v2.6.32-rc1~689^2~28 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=feab4ae73031699fcf92a88f4b1e4ec1b14157a5;p=pandora-kernel.git [SCSI] libfc: re-login to remote ports that send us LOGO After a quick link flap, a target was seen to send us a LOGO. Apparently, it saw an RSCN reporting that we had dropped out of the fabric after we had logged back into it. This is likely in larger fabrics (more than 2 FC switches) after a quick link flap at the initiator. Each link transition causes an port-specific RSCN to the target. After the link comes back up, the initiator successfully discovers and does a PLOGI to the target before the target sees the first RSCN reporting the initiator is gone, and it sends a LOGO. The target may see a subsequent RSCN saying the port is back, but probably wouldn't send a PLOGI and leaves it up to the initiator to re-login. An RSCN can be delayed by the switches due to software layers but a PLOGI is forwarded in hardware causing the PLOGI to beat the RSCN. If a remote port is in the discovered set and sends a LOGO, re-login to it. Signed-off-by: Joe Eykholt Signed-off-by: Robert Love Signed-off-by: James Bottomley --- Reading git-diff-tree failed