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In preparation for sending LS requests for an association that terminates, save and track the hosthandle that is part of the LS's that are received to create associations. Support consists of: - Create a hostport structure that will be 1:1 mapped to a host port handle. The hostport structure is specific to a targetport. - Whenever an association is created, create a host port for the hosthandle the Create Association LS was received from. There will be only 1 hostport structure created, with all associations that have the same hosthandle sharing the hostport structure. - When the association is terminated, the hostport reference will be removed. After the last association for the host port is removed, the hostport will be deleted. - Add support for the new nvmet_fc_invalidate_host() interface. In the past, the LLDD didn't notify loss of connectivity to host ports - the LLD would simply reject new requests and wait for the kato timeout to kill the association. Now, when host port connectivity is lost, the LLDD can notify the transport. The transport will initiate the termination of all associations for that host port. When the last association has been terminated and the hosthandle will no longer be referenced, the new host_release callback will be made to the lldd. - For compatibility with prior behavior which didn't report the hosthandle: the LLDD must set hosthandle to NULL. In these cases, not LS request will be made, and no host_release callbacks will be made either. Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.