SAS_TLR_SUPPORTED(9) SCSI mid layer SAS_TLR_SUPPORTED(9)NAME
sas_tlr_supported - checking TLR bit in vpd 0x90
SYNOPSIS
unsigned int sas_tlr_supported(struct scsi_device * sdev);
ARGUMENTS
sdev
scsi device struct
DESCRIPTION
Check Transport Layer Retries are supported or not. If vpd page 0x90 is present, TRL is supported.
AUTHORS
James Bottomley <James.Bottomley@hansenpartnership.com>
Author.
Rob Landley <rob@landley.net>
Author.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SAS_TLR_SUPPORTED(9)
Check Out this Related Man Page
SRP_RECONNECT_RPORT(9) SCSI mid layer SRP_RECONNECT_RPORT(9)NAME
srp_reconnect_rport - reconnect to an SRP target port
SYNOPSIS
int srp_reconnect_rport(struct srp_rport * rport);
ARGUMENTS
rport
-- undescribed --
DESCRIPTION
Blocks SCSI command queueing before invoking reconnect such that queuecommand won't be invoked concurrently with reconnect from outside the
SCSI EH. This is important since a reconnect implementation may reallocate resources needed by queuecommand.
NOTES
- This function neither waits until outstanding requests have finished nor tries to abort these. It is the responsibility of the reconnect
function to finish outstanding commands before reconnecting to the target port. - It is the responsibility of the caller to ensure that the
resources reallocated by the reconnect function won't be used while this function is in progress. One possible strategy is to invoke this
function from the context of the SCSI EH thread only. Another possible strategy is to lock the rport mutex inside each SCSI LLD callback
that can be invoked by the SCSI EH (the scsi_host_template.eh_*() functions and also the scsi_host_template.queuecommand function).
AUTHORS
James Bottomley <James.Bottomley@hansenpartnership.com>
Author.
Rob Landley <rob@landley.net>
Author.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SRP_RECONNECT_RPORT(9)
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