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89c72f4245
linux/drivers/scsi/qla2xxx
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Quinn Tran 89c72f4245 scsi: qla2xxx: Add IOCB resource tracking 
This patch tracks number of IOCB resources used in the I/O fast path. If
the number of used IOCBs reach a high water limit, driver would return the
I/O as busy and let upper layer retry. This prevents over subscription of
IOCB resources where any future error recovery command is unable to cut
through.  Enable IOCB throttling by default.

Link: https://lore.kernel.org/r/20200904045128.23631-12-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-09-22 18:42:49 -04:00
..
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile
qla_attr.c scsi: qla2xxx: Performance tweak 2020-09-22 18:42:45 -04:00
qla_bsg.c scsi: qla2xxx: Remove a superfluous cast 2020-06-30 23:12:20 -04:00
qla_bsg.h scsi: qla2xxx: Add 28xx flash primary/secondary status/image mechanism 2019-03-19 12:22:55 -04:00
qla_dbg.c scsi: qla2xxx: SAN congestion management implementation 2020-07-01 22:25:09 -04:00
qla_dbg.h scsi: qla2xxx: Allow ql2xextended_error_logging special value 1 to be set anytime 2020-08-17 22:40:13 -04:00
qla_def.h scsi: qla2xxx: Add IOCB resource tracking 2020-09-22 18:42:49 -04:00
qla_devtbl.h
qla_dfs.c scsi: qla2xxx: Add IOCB resource tracking 2020-09-22 18:42:49 -04:00
qla_dsd.h scsi: qla2xxx: Include the <asm/unaligned.h> header file from qla_dsd.h 2019-08-12 21:34:04 -04:00
qla_fw.h scsi: qla2xxx: Honor status qualifier in FCP_RSP per spec 2020-09-22 18:42:40 -04:00
qla_gbl.h scsi: qla2xxx: Add IOCB resource tracking 2020-09-22 18:42:49 -04:00
qla_gs.c scsi: qla2xxx: Reduce duplicate code in reporting speed 2020-09-22 18:42:41 -04:00
qla_init.c scsi: qla2xxx: Add IOCB resource tracking 2020-09-22 18:42:49 -04:00
qla_inline.h scsi: qla2xxx: Add IOCB resource tracking 2020-09-22 18:42:49 -04:00
qla_iocb.c scsi: qla2xxx: Add IOCB resource tracking 2020-09-22 18:42:49 -04:00
qla_isr.c scsi: qla2xxx: Add IOCB resource tracking 2020-09-22 18:42:49 -04:00
qla_mbx.c scsi: qla2xxx: Fix memory size truncation 2020-09-22 18:42:42 -04:00
qla_mid.c scsi: qla2xxx: Performance tweak 2020-09-22 18:42:45 -04:00
qla_mr.c scsi: qla2xxx: Fix endianness annotations in source files 2020-05-19 21:43:28 -04:00
qla_mr.h scsi: qla2xxx: Fix endianness annotations in header files 2020-05-19 21:43:24 -04:00
qla_nvme.c scsi: qla2xxx: Fix I/O errors during LIP reset tests 2020-09-22 18:42:45 -04:00
qla_nvme.h scsi: qla2xxx: Fix I/O failures during remote port toggle testing 2020-09-22 18:42:24 -04:00
qla_nx2.c scsi: qla2xxx: Cast explicitly to uint16_t / uint32_t 2020-05-19 21:43:19 -04:00
qla_nx2.h
qla_nx.c scsi: qla2xxx: Initialize 'n' before using it 2020-06-30 23:12:20 -04:00
qla_nx.h scsi: qla2xxx: Fix endianness annotations in header files 2020-05-19 21:43:24 -04:00
qla_os.c scsi: qla2xxx: Add IOCB resource tracking 2020-09-22 18:42:49 -04:00
qla_settings.h
qla_sup.c scsi: qla2xxx: Fix endianness annotations in source files 2020-05-19 21:43:28 -04:00
qla_target.c scsi: qla2xxx: Setup debugfs entries for remote ports 2020-09-22 18:42:36 -04:00
qla_target.h scsi: qla2xxx: Remove the __packed annotation from struct fcp_hdr and fcp_hdr_le 2020-06-30 23:12:19 -04:00
qla_tmpl.c scsi: qla2xxx: Fix endianness annotations in source files 2020-05-19 21:43:28 -04:00
qla_tmpl.h scsi: qla2xxx: Fix endianness annotations in header files 2020-05-19 21:43:24 -04:00
qla_version.h scsi: qla2xxx: Update driver version to 10.01.00.25-k 2020-02-28 20:32:37 -05:00
tcm_qla2xxx.c scsi: qla2xxx: Check the size of struct fcp_hdr at compile time 2020-06-30 23:12:18 -04:00
tcm_qla2xxx.h