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Justin Tee 0b8b15a0b7 scsi: lpfc: Modify kref handling for Fabric Controller ndlps
Currently, there is a kref put in the lpfc_cleanup() routine that takes
care of outstanding references on fabric controller ndlps in UNUSED
state.  While typically there is a state change from UNUSED -> REGLOGIN
when the ndlp successfully logs into the fabric, there may be cases when
FLOGI is unsuccessful and the ndlp will remain in UNUSED state without a
registered rpi, yet the ndlp incorrectly has a kref count of one.

To address this, handling of Fabric Controller ndlps are moved into the
routines: lpfc_issue_els_scr(), lpfc_issue_els_rdf(),
lpfc_cmpl_els_disc_cmd().

In both lpfc_issue_els_scr() and lpfc_issue_els_rdf(), if there does not
exist a previously created fabric controller ndlp, an ndlp will be
created.  Otherwise, we can reuse the pre-existing ndlp object.

In lpfc_cmpl_els_disc_cmd(), if the SCR or RDF are not successfully
issued, the initial reference on the ndlp that is not registered with
upper layers will be decremented with a kref_put().

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://patch.msgid.link/20251106224639.139176-7-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
History 2025-11-08 13:18:00 -05:00
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block block-6.18-20251009 2025-10-10 10:37:13 -07:00
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README

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 reStructuredText 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.