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[SCSI] be2iscsi: Fix locking mechanism in Unsol Path 

The default pdu is a common resource and needs to be protected
while manipulating it.

Signed-off-by: Minh Tran <minhduc.tran@emulex.com>
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Jayamohan Kallickal 2013-09-28 15:35:42 -07:00 committed by James Bottomley
parent 7331613ec0
commit 8f09a3b978
2 changed files with 8 additions and 0 deletions
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7
drivers/scsi/be2iscsi/be_main.c
View File

@ -2072,8 +2072,10 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
"BM_%d : Received %s[%d] on CID : %d\n",
cqe_desc[code], code, cid);
spin_lock_bh(&phba->async_pdu_lock);
hwi_process_default_pdu_ring(beiscsi_conn, phba,
(struct i_t_dpdu_cqe *)sol);
spin_unlock_bh(&phba->async_pdu_lock);
break;
case UNSOL_DATA_NOTIFY:
beiscsi_log(phba, KERN_INFO,
@ -2081,8 +2083,10 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
"BM_%d : Received %s[%d] on CID : %d\n",
cqe_desc[code], code, cid);
spin_lock_bh(&phba->async_pdu_lock);
hwi_process_default_pdu_ring(beiscsi_conn, phba,
(struct i_t_dpdu_cqe *)sol);
spin_unlock_bh(&phba->async_pdu_lock);
break;
case CXN_INVALIDATE_INDEX_NOTIFY:
case CMD_INVALIDATED_NOTIFY:
@ -2110,8 +2114,10 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
"BM_%d : Dropping %s[%d] on DPDU ring on CID : %d\n",
cqe_desc[code], code, cid);
spin_lock_bh(&phba->async_pdu_lock);
hwi_flush_default_pdu_buffer(phba, beiscsi_conn,
(struct i_t_dpdu_cqe *) sol);
spin_unlock_bh(&phba->async_pdu_lock);
break;
case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL:
case CXN_KILLED_BURST_LEN_MISMATCH:
@ -5010,6 +5016,7 @@ static int beiscsi_dev_probe(struct pci_dev *pcidev,
spin_lock_init(&phba->io_sgl_lock);
spin_lock_init(&phba->mgmt_sgl_lock);
spin_lock_init(&phba->isr_lock);
spin_lock_init(&phba->async_pdu_lock);
ret = mgmt_get_fw_config(&phba->ctrl, phba);
if (ret != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,

1
drivers/scsi/be2iscsi/be_main.h
View File

@ -305,6 +305,7 @@ struct beiscsi_hba {
spinlock_t io_sgl_lock;
spinlock_t mgmt_sgl_lock;
spinlock_t isr_lock;
spinlock_t async_pdu_lock;
unsigned int age;
unsigned short avlbl_cids;
unsigned short cid_alloc;