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According to FC-LS-3 (Fibre Channel Link Services) 6.3.2.4 "N_Port Login - No Fabric present", if both parties in the point-to-point connection know N_Port_Names of each other, Nx_Port with the highest N_Port_name shall transmit PLOGI. The specification sets no restrictions on the port role that should send PLOGI. However, FCP-4 (Fibre Channel Protocol for SCSI, Fourth Version) 6.2 "Overview of Process Login and Process Logout", instructs that in point-to-point topology, initiator shall send explicit PRLI ELS. The change fixes stuck P2P login, when target WWPN is higher than initiator WWPN. Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <hmadhani@marvell.com> Link: https://lore.kernel.org/r/20191125165702.1013-7-r.bolshakov@yadro.com Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> [ commit a9ed06d4e640a8dc978a4649ab78dac8b16d2db6 upstream ] git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8734 d57e44dd-8a1f-0410-8b47-8ef2f437770f
Overview ======== This is the SCST development repository. It contains not a single project SCST as one can think, but a number of them, which are divided as the following: 1. SCST core in scst/ subdirectory 2. Administration utility for SCST core scstadmin in scstadmin/ 3. Target drivers in own subdirectories qla2x00t/, iscsi-scst/, etc. 4. User space programs in usr/ subdirectory, like fileio_tgt. 5. Some various docs in doc/ subdirectory. Those subprojects are in most cases independent from each other, although some of them depend from the SCST core. They put in the single repository only to simplify their development, they are released independently. Thus, use "make all" only if you really need to build everything. Otherwise build only what you need, like for iSCSI-SCST: make scst scst_install iscsi iscsi_install For more information about each subproject see their README files. QLogic target driver ==================== QLogic target driver qla2x00t is the old driver, forked from qla2xxx several years ago. It is very stable, well tested and actively used in many production setups. There is also new driver, maintained by QLogic, which, among other, supports 32G FC, see http://scst.sourceforge.net/target_qla2x00t.html. You can find the latest version of it in git://git.qlogic.com/scst-qla2xxx.git. To integrate it into the SCST build tree you need to clone the QLogic git tree in a subdirectory of this directory (SCST root tree) with name qla2x00t_git (or create a symlink with this name pointing to any other location in your system). Now common and QLA specific root Makefile targets "magically" start working with the new driver. Then follow instructions in the git's README. In presence of qla2x00t_git subdirectory you can still build the qla2x00t using qla_old* root Makefile targets. Vladislav Bolkhovitin <vst@vlnb.net>, http://scst.sourceforge.net