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Commit d5431488 authored by Jayamohan Kallickal's avatar Jayamohan Kallickal Committed by James Bottomley
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[SCSI] be2iscsi: Link Wrb with next Wrb 



This patch will link the current allocated wrb with the next
 wrb that will be allocated. This is a requirement from the chip.

Signed-off-by: default avatarJayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent c2462288

drivers/scsi/be2iscsi/be_main.c

+10 −9
Original line number Diff line number Diff line
@@ -629,29 +629,30 @@ free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle) 
 * alloc_wrb_handle - To allocate a wrb handle

 * @phba: The hba pointer

 * @cid: The cid to use for allocation

 * @index: index allocation and wrb index

 *

 * This happens under session_lock until submission to chip

 */

struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,

				    int index)

struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid)

{

	struct hwi_wrb_context *pwrb_context;

	struct hwi_controller *phwi_ctrlr;

	struct wrb_handle *pwrb_handle;

	struct wrb_handle *pwrb_handle, *pwrb_handle_tmp;



	phwi_ctrlr = phba->phwi_ctrlr;

	pwrb_context = &phwi_ctrlr->wrb_context[cid];

	if (pwrb_context->wrb_handles_available) {

	if (pwrb_context->wrb_handles_available >= 2) {

		pwrb_handle = pwrb_context->pwrb_handle_base[

					    pwrb_context->alloc_index];

		pwrb_context->wrb_handles_available--;

		pwrb_handle->nxt_wrb_index = pwrb_handle->wrb_index;

		if (pwrb_context->alloc_index ==

						(phba->params.wrbs_per_cxn - 1))

			pwrb_context->alloc_index = 0;

		else

			pwrb_context->alloc_index++;



		pwrb_handle_tmp = pwrb_context->pwrb_handle_base[

						pwrb_context->alloc_index];

		pwrb_handle->nxt_wrb_index = pwrb_handle_tmp->wrb_index;

	} else

		pwrb_handle = NULL;

	return pwrb_handle;
@@ -3206,7 +3207,7 @@ beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn, 
	 * login/startup related tasks.

	 */

	pwrb_handle = alloc_wrb_handle(phba, (beiscsi_conn->beiscsi_conn_cid -

				       phba->fw_config.iscsi_cid_start), 0);

				       phba->fw_config.iscsi_cid_start));

	pwrb = (struct iscsi_target_context_update_wrb *)pwrb_handle->pwrb;

	memset(pwrb, 0, sizeof(*pwrb));

	AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
@@ -3316,8 +3317,8 @@ static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode) 
	io_task->libiscsi_itt = (itt_t)task->itt;

	io_task->pwrb_handle = alloc_wrb_handle(phba,

						beiscsi_conn->beiscsi_conn_cid -

						phba->fw_config.iscsi_cid_start,

						task->itt);

						phba->fw_config.iscsi_cid_start

						);

	io_task->conn = beiscsi_conn;



	task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr;

drivers/scsi/be2iscsi/be_main.h

+1 −2
Original line number Diff line number Diff line
@@ -651,8 +651,7 @@ struct amap_iscsi_wrb { 


} __packed;



struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,

				    int index);

struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid);

void

free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle);