diff options
| author | James Smart <james.smart@emulex.com> | 2012-06-12 13:54:27 -0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-07-20 08:58:27 +0100 |
| commit | bbeb79b90e806da2e2338bd8d89c6fa8a1333357 (patch) | |
| tree | ed4cab1c4653292194d6ce9e5b4cfe01894ac7c6 /drivers/scsi | |
| parent | 3b3da6a974357887c73c5ee61988dbe3a8f62d88 (diff) | |
[SCSI] lpfc 8.3.32: Correct host DIF configuration that hung system
Fix system hang due to bad protection module parameters (CR: 130769)
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 411ed48d79da..a79e2c21c5e4 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -5514,14 +5514,45 @@ lpfc_destroy_shost(struct lpfc_hba *phba) static void lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost) { + uint32_t old_mask; + uint32_t old_guard; + int pagecnt = 10; if (lpfc_prot_mask && lpfc_prot_guard) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "1478 Registering BlockGuard with the " "SCSI layer\n"); - scsi_host_set_prot(shost, lpfc_prot_mask); - scsi_host_set_guard(shost, lpfc_prot_guard); + + old_mask = lpfc_prot_mask; + old_guard = lpfc_prot_guard; + + /* Only allow supported values */ + lpfc_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION | + SHOST_DIX_TYPE0_PROTECTION | + SHOST_DIX_TYPE1_PROTECTION); + lpfc_prot_guard &= (SHOST_DIX_GUARD_IP | SHOST_DIX_GUARD_CRC); + + /* DIF Type 1 protection for profiles AST1/C1 is end to end */ + if (lpfc_prot_mask == SHOST_DIX_TYPE1_PROTECTION) + lpfc_prot_mask |= SHOST_DIF_TYPE1_PROTECTION; + + if (lpfc_prot_mask && lpfc_prot_guard) { + if ((old_mask != lpfc_prot_mask) || + (old_guard != lpfc_prot_guard)) + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "1475 Registering BlockGuard with the " + "SCSI layer: mask %d guard %d\n", + lpfc_prot_mask, lpfc_prot_guard); + + scsi_host_set_prot(shost, lpfc_prot_mask); + scsi_host_set_guard(shost, lpfc_prot_guard); + } else + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "1479 Not Registering BlockGuard with the SCSI " + "layer, Bad protection parameters: %d %d\n", + old_mask, old_guard); } + if (!_dump_buf_data) { while (pagecnt) { spin_lock_init(&_dump_buf_lock); |