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307e338097
linux/drivers/scsi
History
James Smart 307e338097 scsi: lpfc: Rework remote port ref counting and node freeing 
When a remote port is disconnected and disappears, its node structure
(ndlp) stays allocated and on a vport node list. While on the list it can
be matched, thus requires validation checks on state to be added in
numerous code paths. If the node comes back, its possible for there to be
multiple node structures for the same device on the vport node list. There
is no reason to keep the node structure around after it is no longer in
existence, and the current implementation creates problems for itself
(multiple nodes) and lots of unnecessary code for state validation.

Additionally, the reference taking on the node structure didn't follow the
normal model used by the kernel kref api. It included lots of odd logic to
match state with reference count.  The combination of this odd logic plus
the way it was implicitly used in the discovery engine made its reference
taking implementation suspect and extremely hard to follow.

Change the driver such that the reference taking routines are now normal
ref increments/decrements and callout on refcount=0.

With this in place, the rework can be done such that the node structure is
fully removed and deallocated when the remote port no longer exists and all
references are removed.  This removal logic, and the basic ref counting are
intrically tied, thus in a single patch.

Link: https://lore.kernel.org/r/20201115192646.12977-2-james.smart@broadcom.com
Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
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>
2020-11-17 00:43:54 -05:00
..
aacraid scsi: aacraid: Improve compat_ioctl handlers 2020-11-04 21:54:11 -05:00
aic7xxx scsi: aic7xxx: aic79xx_osm: Remove unused variable 'saved_scsiid' 2020-11-10 22:27:45 -05:00
aic94xx scsi: Remove unneeded break statements 2020-10-26 18:23:24 -04:00
arcmsr scsi: arcmsr: Stop __builtin_strncpy complaining about a lack of space for NUL 2020-11-10 22:10:03 -05:00
arm SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
be2iscsi scsi: be2iscsi: Mark beiscsi_attrs with static keyword 2020-11-16 23:38:15 -05:00
bfa SCSI misc on 20201023 2020-10-23 16:19:02 -07:00
bnx2fc scsi: bnx2fc: Fix comparison to bool warning 2020-11-10 23:09:43 -05:00
bnx2i scsi: bnx2i: Remove unnecessary mutex_init() 2020-09-22 20:21:02 -04:00
csiostor SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
cxgbi SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
cxlflash powerpc updates for 5.10 2020-10-16 12:21:15 -07:00
device_handler scsi: scsi_dh_alua: Set 'transitioning' state on Unit Attention 2020-11-10 22:58:12 -05:00
dpt scsi: docs: convert dpti.txt to ReST 2020-03-11 23:07:59 -04:00
esas2r scsi: esas2r: esas2r_main: Demote non-conformant kernel-doc header 2020-11-10 22:27:47 -05:00
fcoe scsi: fcoe: Remove unneeded semicolon 2020-11-04 22:05:22 -05:00
fnic scsi: fnic: Simplify the return expression of vnic_wq_copy_alloc() 2020-10-07 23:50:03 -04:00
hisi_sas SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
ibmvscsi SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
ibmvscsi_tgt treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
isci scsi: isci: Don't use PCI helper functions 2020-11-10 23:08:36 -05:00
libfc scsi: libfc: Fix enum-conversion warning 2020-10-29 21:52:02 -04:00
libsas SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
lpfc scsi: lpfc: Rework remote port ref counting and node freeing 2020-11-17 00:43:54 -05:00
megaraid scsi: megaraid_sas: Simplify compat_ioctl handling 2020-11-04 21:56:17 -05:00
mpt3sas scsi: mpt3sas: mpt3sas_scsih: Fix function documentation formatting 2020-11-10 22:27:45 -05:00
mvsas scsi: mvsas: Remove superfluous memset() 2020-08-20 23:21:03 -04:00
pcmcia scsi: Remove unneeded break statements 2020-10-26 18:23:24 -04:00
pm8001 scsi: pm8001: Remove unused variable 'value' 2020-11-16 22:55:55 -05:00
qedf scsi: libfc: Move scsi/fc_encode.h to libfc 2020-10-29 21:49:25 -04:00
qedi scsi: qedi: Add schedule_hw_err_handler callback for fan failure 2020-10-02 21:24:15 -04:00
qla2xxx scsi: target: Drop sess_cmd_lock from I/O path 2020-11-04 22:39:37 -05:00
qla4xxx SCSI misc on 20201023 2020-10-23 16:19:02 -07:00
smartpqi scsi: smartpqi: Update version to 1.2.16-012 2020-11-16 23:03:10 -05:00
snic scsi: snic: Simplify the return expression of svnic_cq_alloc() 2020-10-07 23:50:03 -04:00
sym53c8xx_2 scsi: Remove unneeded break statements 2020-10-26 18:23:24 -04:00
ufs scsi: ufs-qcom: Only select QCOM_SCM if SCSI_UFS_CRYPTO 2020-11-16 23:37:19 -05:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
3w-9xxx.c scsi: 3w-9xxx: fix calls to dma_set_mask_and_coherent() 2019-02-25 21:37:25 -05:00
3w-9xxx.h
3w-sas.c SCSI fixes on 20190302 2019-03-02 11:39:54 -08:00
3w-sas.h
3w-xxxx.c compat_ioctl: move more drivers to compat_ptr_ioctl 2019-10-23 17:23:44 +02:00
3w-xxxx.h
53c700_d.h_shipped
53c700.c SCSI misc on 20201023 2020-10-23 16:19:02 -07:00
53c700.h 53c700: improve non-coherent DMA handling 2020-09-25 06:20:43 +02:00
53c700.scr
a100u2w.c cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
a100u2w.h
a2091.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
a2091.h
a3000.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
a3000.h
a4000t.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
advansys.c scsi: advansys: Relocate or remove unused variables 2020-11-10 22:27:47 -05:00
aha152x.c scsi: aha152x: Remove unused variable 'ret' 2020-07-08 01:12:53 -04:00
aha152x.h
aha1542.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
aha1542.h
aha1740.c scsi: aha1740: Fix an errro handling path in aha1740_probe() 2020-03-26 21:10:53 -04:00
aha1740.h
am53c974.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
atari_scsi.c scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE 2019-11-12 22:21:34 -05:00
atp870u.c scsi: core: Clean up SG_NONE 2019-11-12 22:21:35 -05:00
atp870u.h
BusLogic.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
BusLogic.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 388 2019-06-05 17:37:11 +02:00
bvme6000_scsi.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
ch.c scsi: ch: remove ch_mutex() 2020-02-24 14:54:25 -05:00
constants.c scsi: core: Add DID_ALLOC_FAILURE and DID_MEDIUM_ERROR to hostbyte_table 2020-04-01 22:03:04 -04:00
dc395x.c scsi: dc395x: Mark 's_stat2' as __maybe_unused 2020-11-10 22:27:47 -05:00
dc395x.h
dmx3191d.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
dpt_i2o.c scsi: dpt_i2o: Remove set but not used 'pHba' 2020-09-01 22:15:47 -04:00
dpti.h scsi: docs: convert dpti.txt to ReST 2020-03-11 23:07:59 -04:00
esp_scsi.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
esp_scsi.h scsi: esp_scsi: Add support for FSC chip 2019-12-19 22:08:51 -05:00
fdomain_isa.c scsi: fdomain_isa: Merge branches in fdomain_isa_match() 2020-09-02 22:49:07 -04:00
fdomain_pci.c scsi: fdomain: Resurrect driver - PCI support 2019-06-18 19:46:18 -04:00
fdomain.c scsi: fdomain: use BSTAT_{MSG|CMD|IO} in fdomain_work() 2019-07-30 12:17:28 -04:00
fdomain.h scsi: fdomain: Mark 'fdomain_pm_ops' as __maybe_unused 2020-07-08 01:12:44 -04:00
FlashPoint.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
g_NCR5380.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
gdth_ioctl.h scsi: gdth: remove dead code under #ifdef GDTH_IOCTL_PROC 2019-01-08 21:58:35 -05:00
gdth_proc.c scsi: gdth: Use scnprintf() for avoiding potential buffer overflow 2020-03-17 13:36:10 -04:00
gdth_proc.h scsi: gdth: remove gdth_{alloc,free}_ioctl 2019-01-08 21:57:42 -05:00
gdth.c scsi: gdth: Make option_setup() static 2020-10-07 21:48:28 -04:00
gdth.h scsi: gdth: remove ISA and EISA support 2019-01-08 21:58:35 -05:00
gvp11.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
gvp11.h
hosts.c scsi: Add host and host template flag 'host_tagset' 2020-10-06 08:33:44 -06:00
hpsa_cmd.h scsi: hpsa: Update copyright 2020-09-02 22:49:06 -04:00
hpsa.c scsi: hpsa: Strip out a bunch of set but unused variables 2020-11-16 23:35:08 -05:00
hpsa.h scsi: hpsa: Update copyright 2020-09-02 22:49:06 -04:00
hptiop.c scsi: Remove unneeded break statements 2020-10-26 18:23:24 -04:00
hptiop.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
imm.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
imm.h
initio.c scsi: initio: Use module_pci_driver() to simplify the code 2020-10-07 21:48:28 -04:00
initio.h
ipr.c scsi: Remove unneeded break statements 2020-10-26 18:23:24 -04:00
ipr.h scsi: ipr: Fix struct packed-not-aligned issues 2020-07-15 17:26:58 -04:00
ips.c scsi: ips: Convert strnlen() to memcpy() since result should not be NUL terminated 2020-07-24 22:32:00 -04:00
ips.h scsi: ips: properly handle 64-bit DMA 2018-11-06 21:31:28 -05:00
iscsi_boot_sysfs.c scsi: iscsi: Fix reference count leak in iscsi_boot_create_kobj 2020-06-02 21:23:47 -04:00
iscsi_tcp.c scsi: doc: Fix some kernel-doc markups 2020-10-26 21:54:16 -04:00
iscsi_tcp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
jazz_esp.c scsi: jazz_esp: Use module_platform_driver to simplify the code 2020-10-02 21:52:52 -04:00
Kconfig scsi: lpfc: Add dependency on CPU_FREQ 2020-07-24 22:09:55 -04:00
lasi700.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
libiscsi_tcp.c scsi: libiscsi: use sendpage_ok() in iscsi_tcp_segment_map() 2020-10-02 15:27:08 -07:00
libiscsi.c scsi: doc: Fix some kernel-doc markups 2020-10-26 21:54:16 -04:00
mac53c94.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
mac53c94.h
mac_esp.c scsi: mac_esp: Use module_platform_driver to simplify the code 2020-10-02 21:52:53 -04:00
mac_scsi.c scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE 2019-11-12 22:21:34 -05:00
Makefile scsi: remove pointless $(MODVERDIR)/$(obj)/53c700.ver 2019-07-17 22:39:27 +09:00
megaraid.c SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
megaraid.h
mesh.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mesh.h
mvme16x_scsi.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
mvme147.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
mvme147.h
mvumi.c scsi: Remove unneeded break statements 2020-10-26 18:23:24 -04:00
mvumi.h scsi: Replace zero-length array with flexible-array member 2020-03-11 23:07:56 -04:00
myrb.c SCSI misc on 20201023 2020-10-23 16:19:02 -07:00
myrb.h scsi: mylex: Use the correct style for SPDX License Identifier 2020-01-02 21:57:44 -05:00
myrs.c scsi: myrs: Make some symbols static 2020-09-15 21:31:27 -04:00
myrs.h scsi: mylex: Use the correct style for SPDX License Identifier 2020-01-02 21:57:44 -05:00
ncr53c8xx.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ncr53c8xx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
NCR5380.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
NCR5380.h Revert "scsi: ncr5380: Increase register polling limit" 2019-06-20 15:37:02 -04:00
nsp32_debug.c
nsp32_io.h
nsp32.c scsi: nsp32: Remove unneeded semicolon 2020-09-15 17:34:18 -04:00
nsp32.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
pmcraid.c scsi: pmcraid: Remove set but not used 'res' 2020-09-09 22:40:41 -04:00
pmcraid.h scsi: Replace zero-length array with flexible-array member 2020-03-11 23:07:56 -04:00
ppa.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ppa.h
ps3rom.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 164 2019-05-30 11:26:38 -07:00
qla1280.c scsi: qla1280: Remove set but not used variable in qla1280_status_entry() 2020-09-09 22:37:48 -04:00
qla1280.h scsi: qla1280: Fix dma firmware download, if dma address is 64bit 2020-01-15 23:09:11 -05:00
qlogicfas408.c scsi: qlogicfas408: clean up a couple of indentation issues 2019-03-19 17:11:37 -04:00
qlogicfas408.h
qlogicfas.c scsi: remove the use_clustering flag 2018-12-18 23:19:21 -05:00
qlogicpti.c SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
qlogicpti.h scsi: qlogicpti: Use of_node_name_eq for node name comparisons 2019-02-13 22:07:03 -05:00
raid_class.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 437 2019-06-05 17:37:17 +02:00
script_asm.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
scsi_common.c
scsi_debug.c SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
scsi_debugfs.c scsi: scsi_debugfs: Use for_each_set_bit to simplify code 2019-07-30 12:42:55 -04:00
scsi_debugfs.h scsi: core: add SPDX tags to scsi midlayer files missing licensing information 2019-05-21 06:16:21 -04:00
scsi_devinfo.c scsi: doc: Fix some kernel-doc markups 2020-10-26 21:54:16 -04:00
scsi_dh.c scsi: dh: Add Fujitsu device to devinfo and dh lists 2020-07-08 01:16:23 -04:00
scsi_error.c SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
scsi_ioctl.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
scsi_lib_dma.c
scsi_lib.c scsi: core: Replace while-loop by for-loop in scsi_vpd_lun_id() 2020-11-16 22:29:49 -05:00
scsi_logging.c scsi: core: Delete unnecessary buffer allocation for every loop iteration 2020-07-24 22:09:57 -04:00
scsi_logging.h scsi: core: Fix a compiler warning triggered by the SCSI logging code 2019-12-19 22:08:54 -05:00
scsi_netlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
scsi_pm.c scsi: block: pm: Simplify resume handling 2020-07-24 22:09:55 -04:00
scsi_priv.h scsi: core: Add limitless cmd retry support 2020-10-02 18:53:06 -04:00
scsi_proc.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
scsi_sas_internal.h
scsi_scan.c scsi: core: Remove cmd_list functionality 2020-02-28 20:54:55 -05:00
scsi_sysctl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209 2019-05-30 11:29:53 -07:00
scsi_sysfs.c scsi: core: Fix -Wformat for scsi_host 2020-11-16 22:33:59 -05:00
scsi_trace.c scsi: scsi_trace: Use get_unaligned_be24() 2020-03-16 22:08:36 -04:00
scsi_transport_api.h
scsi_transport_fc.c scsi: doc: Fix some kernel-doc markups 2020-10-26 21:54:16 -04:00
scsi_transport_iscsi.c SCSI misc on 20200806 2020-08-06 16:50:07 -07:00
scsi_transport_sas.c scsi: scsi_transport_sas: Add spaces around binary operator "|" 2020-08-04 20:56:56 -04:00
scsi_transport_spi.c scsi: scsi_transport_spi: Fix function pointer check 2020-06-29 21:34:35 -04:00
scsi_transport_srp.c scsi: scsi_transport_srp: Sanitize scsi_target_block/unblock sequences 2020-07-30 21:15:26 -04:00
scsi.c scsi: core: Remove scsi_sdb_cache 2020-06-19 23:06:43 -04:00
scsi.h
scsicam.c block: move struct partition out of genhd.h 2020-03-24 07:57:08 -06:00
sd_dif.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 410 2019-06-05 17:37:14 +02:00
sd_zbc.c scsi: sd: sd_zbc: Fix ZBC disk initialization 2020-09-15 20:08:15 -04:00
sd.c SCSI misc on 20201023 2020-10-23 16:19:02 -07:00
sd.h SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
sense_codes.h scsi: core: Update additional sense codes list 2020-09-15 20:28:06 -04:00
ses.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
sg.c iov_iter: transparently handle compat iovecs in import_iovec 2020-10-03 00:02:13 -04:00
sgiwd93.c sgiwd93: convert to dma_alloc_noncoherent 2020-09-25 06:20:44 +02:00
sim710.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
sni_53c710.c scsi: sni_53c710: Use module_platform_driver to simplify the code 2020-10-02 21:52:54 -04:00
sr_ioctl.c
sr_vendor.c scsi: sr: remove references to BLK_DEV_SR_VENDOR, leave it enabled 2020-02-24 14:59:01 -05:00
sr.c SCSI misc on 20201023 2020-10-23 16:19:02 -07:00
sr.h scsi: sr: get rid of sr global mutex 2020-02-24 15:01:57 -05:00
st_options.h
st.c scsi: Remove unneeded break statements 2020-10-26 18:23:24 -04:00
st.h
stex.c scsi: Replace zero-length array with flexible-array member 2020-03-11 23:07:56 -04:00
storvsc_drv.c scsi: storvsc: Support PAGE_SIZE larger than 4K 2020-09-28 08:57:28 +00:00
sun3_scsi_vme.c
sun3_scsi.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
sun3x_esp.c scsi: sun3x_esp: Use module_platform_driver to simplify the code 2020-10-02 21:52:55 -04:00
sun_esp.c scsi: sun_esp: Use module_platform_driver to simplify the code 2020-10-02 21:52:55 -04:00
virtio_scsi.c SCSI misc on 20201013 2020-10-14 15:15:35 -07:00
vmw_pvscsi.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
vmw_pvscsi.h
wd33c93.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
wd33c93.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
wd719x.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
wd719x.h scsi: wd719x: use per-command private data 2018-11-15 14:27:08 -05:00
xen-scsifront.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
zalon.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
zorro7xx.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
zorro_esp.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00