mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-06 00:39:48 +00:00
Code Issues Releases Wiki Activity

scsi: lpfc: Fix NVME io abort failures causing hangs

Browse source 
The nvme-fc transport may call to abort an io on controller reset. If the
driver is out of resources to issue an abort command, it just gives up and
does nothing. The transport expects the lldd to always be able to terminate
an io it has issued.  At that point, the controller hangs waiting for
aborted ios to be returned.  Note: flaged by "6136" and "6176" error
messages.

Root issue was the adapter mis-allocated the number resources it allocated
for command entries for the adapter.

Convert the driver to allocate command resources based on the number of
xris supported by the FC port - 1 resource for the original command and 1
resource for the abort request.

Link: https://lore.kernel.org/r/20190922035906.10977-5-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2019-09-21 20:58:50 -07:00 committed by Martin K. Petersen
parent b7b95fb863
commit a5f7337f5a
4 changed files with 14 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/scsi/lpfc/lpfc.h
View file

@ -872,7 +872,6 @@ struct lpfc_hba {
uint32_t cfg_aer_support;
uint32_t cfg_sriov_nr_virtfn;
uint32_t cfg_request_firmware_upgrade;
uint32_t cfg_iocb_cnt;
uint32_t cfg_suppress_link_up;
uint32_t cfg_rrq_xri_bitmap_sz;
uint32_t cfg_delay_discovery;

5
drivers/scsi/lpfc/lpfc_attr.c
View file

@ -3582,9 +3582,6 @@ lpfc_txcmplq_hw_show(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(txcmplq_hw, S_IRUGO,
lpfc_txcmplq_hw_show, NULL);
LPFC_ATTR_R(iocb_cnt, 2, 1, 5,
"Number of IOCBs alloc for ELS, CT, and ABTS: 1k to 5k IOCBs");
/*
# lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
# until the timer expires. Value range is [0,255]. Default value is 30.
@ -6073,7 +6070,6 @@ struct device_attribute *lpfc_hba_attrs[] = {
&dev_attr_lpfc_sriov_nr_virtfn,
&dev_attr_lpfc_req_fw_upgrade,
&dev_attr_lpfc_suppress_link_up,
&dev_attr_lpfc_iocb_cnt,
&dev_attr_iocb_hw,
&dev_attr_txq_hw,
&dev_attr_txcmplq_hw,
@ -7212,7 +7208,6 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
lpfc_sriov_nr_virtfn_init(phba, lpfc_sriov_nr_virtfn);
lpfc_request_firmware_upgrade_init(phba, lpfc_req_fw_upgrade);
lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up);
lpfc_iocb_cnt_init(phba, lpfc_iocb_cnt);
lpfc_delay_discovery_init(phba, lpfc_delay_discovery);
lpfc_sli_mode_init(phba, lpfc_sli_mode);
phba->cfg_enable_dss = 1;

9
drivers/scsi/lpfc/lpfc_init.c
View file

@ -7126,7 +7126,7 @@ lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
if (iocbq_entry == NULL) {
printk(KERN_ERR "%s: only allocated %d iocbs of "
"expected %d count. Unloading driver.\n",
__func__, i, LPFC_IOCB_LIST_CNT);
__func__, i, iocb_count);
goto out_free_iocbq;
}
@ -11591,13 +11591,10 @@ lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
}
/* If the NVME FC4 type is enabled, scale the sg_seg_cnt to
* accommodate 512K and 1M IOs in a single nvme buf and supply
* enough NVME LS iocb buffers for larger connectivity counts.
* accommodate 512K and 1M IOs in a single nvme buf.
*/
if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
phba->cfg_iocb_cnt = 5;
}
/* Only embed PBDE for if_type 6, PBDE support requires xib be set */
if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=

17
drivers/scsi/lpfc/lpfc_sli.c
View file

@ -7523,9 +7523,11 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba)
}
phba->sli4_hba.nvmet_xri_cnt = rc;
cnt = phba->cfg_iocb_cnt * 1024;
/* We need 1 iocbq for every SGL, for IO processing */
cnt += phba->sli4_hba.nvmet_xri_cnt;
/* We allocate an iocbq for every receive context SGL.
* The additional allocation is for abort and ls handling.
*/
cnt = phba->sli4_hba.nvmet_xri_cnt +
phba->sli4_hba.max_cfg_param.max_xri;
} else {
/* update host common xri-sgl sizes and mappings */
rc = lpfc_sli4_io_sgl_update(phba);
@ -7547,14 +7549,17 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba)
rc = -ENODEV;
goto out_destroy_queue;
}
cnt = phba->cfg_iocb_cnt * 1024;
/* Each lpfc_io_buf job structure has an iocbq element.
* This cnt provides for abort, els, ct and ls requests.
*/
cnt = phba->sli4_hba.max_cfg_param.max_xri;
}
if (!phba->sli.iocbq_lookup) {
/* Initialize and populate the iocb list per host */
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"2821 initialize iocb list %d total %d\n",
phba->cfg_iocb_cnt, cnt);
"2821 initialize iocb list with %d entries\n",
cnt);
rc = lpfc_init_iocb_list(phba, cnt);
if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,