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Add nvme initiator devloss support The existing implementation was based on no devloss behavior in the transport (e.g. immediate teardown) so code didn't properly handle delayed nvme rport device unregister calls. In addition, the driver was not correctly cycling the rport port role for each register-unregister-reregister process. This patch does the following: Rework the code to properly handle rport device unregister calls and potential re-allocation of the remoteport structure if the port comes back in under dev_loss_tmo. Correct code that was incorrectly cycling the rport port role for each register-unregister-reregister process. Prep the code to enable calling the nvme_fc transport api to dynamically update dev_loss_tmo when the scsi sysfs interface changes it. Memset the rpinfo structure in the registration call to enforce "accept nvme transport defaults" in the registration call. Driver parameters do influence the dev_loss_tmo transport setting dynamically. Simplifies the register function: the driver was incorrectly searching its local rport list to determine resume or new semantics, which is not valid as the transport already handles this. The rport was resumed if the rport handed back matches the ndlp->nrport pointer. Otherwise, devloss fired and the ndlp's nrport is NULL. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.