kernel/drivers/scsi/lpfc/lpfc_attr.c, branch linux-6.9.y

scsi: lpfc: Use a dedicated lock for ras_fwlog state

2024-03-10T22:56:43Z

To reduce usage of and contention for hbalock, a separate dedicated lock is used to protect ras_fwlog state. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20240305200503.57317-8-justintee8345@gmail.com Signed-off-by: Martin K. Petersen

scsi: lpfc: Copyright updates for 14.4.0.0 patches

2024-02-06T01:51:36Z

Update copyrights to 2024 for files modified in the 14.4.0.0 patch set. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20240131185112.149731-18-justintee8345@gmail.com Reviewed-by: Himanshu Madhani Signed-off-by: Martin K. Petersen

scsi: lpfc: Change lpfc_vport fc_flag member into a bitmask

2024-02-06T01:51:36Z

In attempt to reduce the amount of unnecessary shost_lock acquisitions in the lpfc driver, change fc_flag into an unsigned long bitmask and use clear_bit/test_bit bitwise atomic APIs instead of reliance on shost_lock for synchronization. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20240131185112.149731-15-justintee8345@gmail.com Reviewed-by: Himanshu Madhani Signed-off-by: Martin K. Petersen

scsi: lpfc: Protect vport fc_nodes list with an explicit spin lock

2024-02-06T01:51:36Z

In attempt to reduce the amount of unnecessary shost_lock acquisitions in the lpfc driver, replace shost_lock with an explicit fc_nodes_list_lock spinlock when accessing vport->fc_nodes lists. Although vport memory region is owned by shost->hostdata, it is driver private memory and an explicit fc_nodes list lock for fc_nodes list mutations is more appropriate than locking the entire shost. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20240131185112.149731-14-justintee8345@gmail.com Reviewed-by: Himanshu Madhani Signed-off-by: Martin K. Petersen

scsi: lpfc: Change nlp state statistic counters into atomic_t

2024-02-06T01:51:35Z

There is no reason to use the shost_lock to synchronize an LLDD statistics counter. Convert all the nlp state statistic counters into atomic_t. Corresponding zeroing, increments, and reads are converted to atomic versions. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20240131185112.149731-13-justintee8345@gmail.com Reviewed-by: Himanshu Madhani Signed-off-by: Martin K. Petersen

scsi: lpfc: Remove shost_lock protection for fc_host_port shost APIs

2024-02-06T01:51:35Z

Desiring to reduce the amount of unnecessary shost_lock acquisitions in the lpfc driver, it has been determined that there is no need for shost_lock protection when retrieving fc_host port information because it is only for display to user via sysfs. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20240131185112.149731-12-justintee8345@gmail.com Reviewed-by: Himanshu Madhani Signed-off-by: Martin K. Petersen

scsi: lpfc: Change VMID driver load time parameters to read only

2023-12-14T03:17:56Z

VMID driver support is a load time configuration setting. Thus, change sysfs attributes to read only. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20231207224039.35466-2-justintee8345@gmail.com Signed-off-by: Martin K. Petersen

scsi: lpfc: Correct maximum PCI function value for RAS fw logging

2023-11-15T14:52:57Z

Currently, the ras_fwlog_func sysfs parameter allows users to input a value greater than three when selecting a PCI function to enable RAS fw logging feature. The user's input is sanity checked in lpfc_sli4_ras_init(), but allowing an input greater than three doesn't make sense because the max number of ports per HBA is four. Change the allowable range from [0, 7] to [0, 3]. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20231031191224.150862-2-justintee8345@gmail.com Reviewed-by: Himanshu Madhani Signed-off-by: Martin K. Petersen

scsi: lpfc: Clean up SLI-4 sysfs resource reporting

2023-07-23T20:17:08Z

Currently, we have dated logic to work around the differences between SLI-4 and SLI-3 resource reporting through sysfs. Leave the SLI-3 path untouched, but for SLI4 path, retrieve resource values from the phba->sli4_hba->max_cfg_param structure. Max values are populated during ACQE events right after READ_CONFIG mbox cmd is sent. Instead of the dated subtraction logic, used resource calculation is directly fed into sysfs for display. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20230712180522.112722-11-justintee8345@gmail.com Signed-off-by: Martin K. Petersen

scsi: lpfc: Update congestion warning notification period

2023-05-08T11:16:05Z

The CMF_SYNC_WQE command is updated to use an 8-bit field sync period. All related variables used to calculate congestion warning notifications are updated to 8-bit fields accordingly. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20230417191558.83100-5-justintee8345@gmail.com Signed-off-by: Martin K. Petersen