[SCSI] be2iscsi: Moving to pci_pools v3
This patch contains changes to use pci_pools for iscsi hdr
instead of pci_alloc_consistent. Here we alloc and free to pool
for every IO
v3:
- Remove cleanup loop in beiscsi_session_destroy
- Fixup for allocation failure handling in beiscsi_alloc_pdu
- Removed unused variable in beiscsi_session_destroy.
[jejb: fix up pci_pool_alloc address sizing problem]
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index d520fe8..4f1aca3 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -2880,7 +2880,16 @@
struct hwi_wrb_context *pwrb_context;
struct hwi_controller *phwi_ctrlr;
itt_t itt;
+ struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
+ dma_addr_t paddr;
+ io_task->cmd_bhs = pci_pool_alloc(beiscsi_sess->bhs_pool,
+ GFP_KERNEL, &paddr);
+
+ if (!io_task->cmd_bhs)
+ return -ENOMEM;
+
+ io_task->bhs_pa.u.a64.address = paddr;
io_task->pwrb_handle = alloc_wrb_handle(phba,
beiscsi_conn->beiscsi_conn_cid,
task->itt);
@@ -2894,17 +2903,9 @@
spin_lock(&phba->io_sgl_lock);
io_task->psgl_handle = alloc_io_sgl_handle(phba);
spin_unlock(&phba->io_sgl_lock);
- if (!io_task->psgl_handle) {
- phwi_ctrlr = phba->phwi_ctrlr;
- pwrb_context = &phwi_ctrlr->wrb_context
- [beiscsi_conn->beiscsi_conn_cid];
- free_wrb_handle(phba, pwrb_context,
- io_task->pwrb_handle);
- io_task->pwrb_handle = NULL;
- SE_DEBUG(DBG_LVL_1,
- "Alloc of SGL_ICD Failed \n");
- return -ENOMEM;
- }
+ if (!io_task->psgl_handle)
+ goto free_hndls;
+
} else {
io_task->scsi_cmnd = NULL;
if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) {
@@ -2913,18 +2914,9 @@
io_task->psgl_handle = (struct sgl_handle *)
alloc_mgmt_sgl_handle(phba);
spin_unlock(&phba->mgmt_sgl_lock);
- if (!io_task->psgl_handle) {
- phwi_ctrlr = phba->phwi_ctrlr;
- pwrb_context =
- &phwi_ctrlr->wrb_context
- [beiscsi_conn->beiscsi_conn_cid];
- free_wrb_handle(phba, pwrb_context,
- io_task->pwrb_handle);
- io_task->pwrb_handle = NULL;
- SE_DEBUG(DBG_LVL_1, "Alloc of "
- "MGMT_SGL_ICD Failed \n");
- return -ENOMEM;
- }
+ if (!io_task->psgl_handle)
+ goto free_hndls;
+
beiscsi_conn->login_in_progress = 1;
beiscsi_conn->plogin_sgl_handle =
io_task->psgl_handle;
@@ -2936,23 +2928,24 @@
spin_lock(&phba->mgmt_sgl_lock);
io_task->psgl_handle = alloc_mgmt_sgl_handle(phba);
spin_unlock(&phba->mgmt_sgl_lock);
- if (!io_task->psgl_handle) {
- phwi_ctrlr = phba->phwi_ctrlr;
- pwrb_context = &phwi_ctrlr->wrb_context
- [beiscsi_conn->beiscsi_conn_cid];
- free_wrb_handle(phba, pwrb_context,
- io_task->pwrb_handle);
- io_task->pwrb_handle = NULL;
- SE_DEBUG(DBG_LVL_1, "Alloc of "
- "MGMT_SGL_ICD Failed \n");
- return -ENOMEM;
- }
+ if (!io_task->psgl_handle)
+ goto free_hndls;
}
}
itt = (itt_t) cpu_to_be32(((unsigned int)task->itt << 16) |
(unsigned int)(io_task->psgl_handle->sgl_index));
io_task->cmd_bhs->iscsi_hdr.itt = itt;
return 0;
+
+free_hndls:
+ phwi_ctrlr = phba->phwi_ctrlr;
+ pwrb_context = &phwi_ctrlr->wrb_context[beiscsi_conn->beiscsi_conn_cid];
+ free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
+ io_task->pwrb_handle = NULL;
+ pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
+ io_task->bhs_pa.u.a64.address);
+ SE_DEBUG(DBG_LVL_1, "Alloc of SGL_ICD Failed \n");
+ return -ENOMEM;
}
static void beiscsi_cleanup_task(struct iscsi_task *task)
@@ -2961,6 +2954,7 @@
struct iscsi_conn *conn = task->conn;
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
struct beiscsi_hba *phba = beiscsi_conn->phba;
+ struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
struct hwi_wrb_context *pwrb_context;
struct hwi_controller *phwi_ctrlr;
@@ -2971,6 +2965,11 @@
io_task->pwrb_handle = NULL;
}
+ if (io_task->cmd_bhs) {
+ pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
+ io_task->bhs_pa.u.a64.address);
+ }
+
if (task->sc) {
if (io_task->psgl_handle) {
spin_lock(&phba->io_sgl_lock);
@@ -3003,7 +3002,6 @@
unsigned int doorbell = 0;
pwrb = io_task->pwrb_handle->pwrb;
-
io_task->cmd_bhs->iscsi_hdr.exp_statsn = 0;
io_task->bhs_len = sizeof(struct be_cmd_bhs);
@@ -3020,7 +3018,6 @@
&io_task->cmd_bhs->iscsi_data_pdu, 1);
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, INI_WR_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
-
} else {
SE_DEBUG(DBG_LVL_4, "READ Command \t");
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, INI_RD_CMD);