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Commit 0a3db7c0 authored by Jayamohan Kallickal's avatar Jayamohan Kallickal Committed by James Bottomley
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[SCSI] be2iscsi: Fix CID allocation/freeing to support Dual chute mode 



Configuration parameters returns the number of connection that
can be offloaded one each chute.

Signed-off-by: default avatarJohn Soni Jose <sony.john-n@emulex.com>
Signed-off-by: default avatarJayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 4eea99d5

drivers/scsi/be2iscsi/be_iscsi.c

+41 −13
Original line number Diff line number Diff line
@@ -964,15 +964,31 @@ int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn) 
 */

static int beiscsi_get_cid(struct beiscsi_hba *phba)

{

	unsigned short cid = 0xFFFF;



	if (!phba->avlbl_cids)

	unsigned short cid = 0xFFFF, cid_from_ulp;

	struct ulp_cid_info *cid_info = NULL;

	uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;



	/* Find the ULP which has more CID available */

	cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?

			  BEISCSI_ULP0_AVLBL_CID(phba) : 0;

	cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?

			  BEISCSI_ULP1_AVLBL_CID(phba) : 0;

	cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?

			BEISCSI_ULP0 : BEISCSI_ULP1;



	if (test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) {

		cid_info = phba->cid_array_info[cid_from_ulp];

		if (!cid_info->avlbl_cids)

			return cid;



	cid = phba->cid_array[phba->cid_alloc++];

	if (phba->cid_alloc == phba->params.cxns_per_ctrl)

		phba->cid_alloc = 0;

	phba->avlbl_cids--;

		cid = cid_info->cid_array[cid_info->cid_alloc++];



		if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(

					   phba, cid_from_ulp))

			cid_info->cid_alloc = 0;



		cid_info->avlbl_cids--;

	}

	return cid;

}
@@ -983,10 +999,22 @@ static int beiscsi_get_cid(struct beiscsi_hba *phba) 
 */

static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)

{

	phba->avlbl_cids++;

	phba->cid_array[phba->cid_free++] = cid;

	if (phba->cid_free == phba->params.cxns_per_ctrl)

		phba->cid_free = 0;

	uint16_t cid_post_ulp;

	struct hwi_controller *phwi_ctrlr;

	struct hwi_wrb_context *pwrb_context;

	struct ulp_cid_info *cid_info = NULL;

	uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);



	phwi_ctrlr = phba->phwi_ctrlr;

	pwrb_context = &phwi_ctrlr->wrb_context[cri_index];

	cid_post_ulp = pwrb_context->ulp_num;



	cid_info = phba->cid_array_info[cid_post_ulp];

	cid_info->avlbl_cids++;



	cid_info->cid_array[cid_info->cid_free++] = cid;

	if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))

		cid_info->cid_free = 0;

}



/**

drivers/scsi/be2iscsi/be_main.c

+89 −19
Original line number Diff line number Diff line
@@ -4079,15 +4079,46 @@ static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba) 


static int hba_setup_cid_tbls(struct beiscsi_hba *phba)

{

	int i;

	int ret;

	uint16_t i, ulp_num;

	struct ulp_cid_info *ptr_cid_info = NULL;



	phba->cid_array = kzalloc(sizeof(void *) * phba->params.cxns_per_ctrl,

	for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {

		if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {

			ptr_cid_info = kzalloc(sizeof(struct ulp_cid_info),

					       GFP_KERNEL);

	if (!phba->cid_array) {



			if (!ptr_cid_info) {

				beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,

			    "BM_%d : Failed to allocate memory in "

			    "hba_setup_cid_tbls\n");

		return -ENOMEM;

					    "BM_%d : Failed to allocate memory"

					    "for ULP_CID_INFO for ULP : %d\n",

					    ulp_num);

				ret = -ENOMEM;

				goto free_memory;



			}



			/* Allocate memory for CID array */

			ptr_cid_info->cid_array = kzalloc(sizeof(void *) *

						  BEISCSI_GET_CID_COUNT(phba,

						  ulp_num), GFP_KERNEL);

			if (!ptr_cid_info->cid_array) {

				beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,

					    "BM_%d : Failed to allocate memory"

					    "for CID_ARRAY for ULP : %d\n",

					    ulp_num);

				kfree(ptr_cid_info);

				ptr_cid_info = NULL;

				ret = -ENOMEM;



				goto free_memory;

			}

			ptr_cid_info->avlbl_cids = BEISCSI_GET_CID_COUNT(

						   phba, ulp_num);



			/* Save the cid_info_array ptr */

			phba->cid_array_info[ulp_num] = ptr_cid_info;

		}

	}

	phba->ep_array = kzalloc(sizeof(struct iscsi_endpoint *) *

				 phba->params.cxns_per_ctrl, GFP_KERNEL);
@@ -4095,9 +4126,9 @@ static int hba_setup_cid_tbls(struct beiscsi_hba *phba) 
		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,

			    "BM_%d : Failed to allocate memory in "

			    "hba_setup_cid_tbls\n");

		kfree(phba->cid_array);

		phba->cid_array = NULL;

		return -ENOMEM;

		ret = -ENOMEM;



		goto free_memory;

	}



	phba->conn_table = kzalloc(sizeof(struct beiscsi_conn *) *
@@ -4107,18 +4138,44 @@ static int hba_setup_cid_tbls(struct beiscsi_hba *phba) 
			    "BM_%d : Failed to allocate memory in"

			    "hba_setup_cid_tbls\n");



		kfree(phba->cid_array);

		kfree(phba->ep_array);

		phba->cid_array = NULL;

		phba->ep_array = NULL;

		return -ENOMEM;

		ret = -ENOMEM;

	}



	for (i = 0; i < phba->params.cxns_per_ctrl; i++)

		phba->cid_array[i] = phba->phwi_ctrlr->wrb_context[i].cid;

	for (i = 0; i < phba->params.cxns_per_ctrl; i++) {

		ulp_num = phba->phwi_ctrlr->wrb_context[i].ulp_num;



		ptr_cid_info = phba->cid_array_info[ulp_num];

		ptr_cid_info->cid_array[ptr_cid_info->cid_alloc++] =

			phba->phwi_ctrlr->wrb_context[i].cid;



	}



	for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {

		if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {

			ptr_cid_info = phba->cid_array_info[ulp_num];



	phba->avlbl_cids = phba->params.cxns_per_ctrl;

			ptr_cid_info->cid_alloc = 0;

			ptr_cid_info->cid_free = 0;

		}

	}

	return 0;



free_memory:

	for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {

		if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {

			ptr_cid_info = phba->cid_array_info[ulp_num];



			if (ptr_cid_info) {

				kfree(ptr_cid_info->cid_array);

				kfree(ptr_cid_info);

				phba->cid_array_info[ulp_num] = NULL;

			}

		}

	}



	return ret;

}



static void hwi_enable_intr(struct beiscsi_hba *phba)
@@ -4373,7 +4430,8 @@ static void hwi_purge_eq(struct beiscsi_hba *phba) 


static void beiscsi_clean_port(struct beiscsi_hba *phba)

{

	int mgmt_status;

	int mgmt_status, ulp_num;

	struct ulp_cid_info *ptr_cid_info = NULL;



	mgmt_status = mgmt_epfw_cleanup(phba, CMD_CONNECTION_CHUTE_0);

	if (mgmt_status)
@@ -4384,9 +4442,21 @@ static void beiscsi_clean_port(struct beiscsi_hba *phba) 
	hwi_cleanup(phba);

	kfree(phba->io_sgl_hndl_base);

	kfree(phba->eh_sgl_hndl_base);

	kfree(phba->cid_array);

	kfree(phba->ep_array);

	kfree(phba->conn_table);



	for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {

		if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {

			ptr_cid_info = phba->cid_array_info[ulp_num];



			if (ptr_cid_info) {

				kfree(ptr_cid_info->cid_array);

				kfree(ptr_cid_info);

				phba->cid_array_info[ulp_num] = NULL;

			}

		}

	}



}



/**

drivers/scsi/be2iscsi/be_main.h

+16 −4
Original line number Diff line number Diff line
@@ -297,6 +297,13 @@ struct hwi_wrb_context { 
	uint32_t doorbell_offset;

};



struct ulp_cid_info {

	unsigned short *cid_array;

	unsigned short avlbl_cids;

	unsigned short cid_alloc;

	unsigned short cid_free;

};



#include "be.h"

#define chip_be2(phba)      (phba->generation == BE_GEN2)

#define chip_be3_r(phba)    (phba->generation == BE_GEN3)
@@ -307,6 +314,14 @@ struct hwi_wrb_context { 
#define BEISCSI_ULP_COUNT   2

#define BEISCSI_ULP0_LOADED 0x01

#define BEISCSI_ULP1_LOADED 0x02



#define BEISCSI_ULP_AVLBL_CID(phba, ulp_num) \

	(((struct ulp_cid_info *)phba->cid_array_info[ulp_num])->avlbl_cids)

#define BEISCSI_ULP0_AVLBL_CID(phba) \

	BEISCSI_ULP_AVLBL_CID(phba, BEISCSI_ULP0)

#define BEISCSI_ULP1_AVLBL_CID(phba) \

	BEISCSI_ULP_AVLBL_CID(phba, BEISCSI_ULP1)



struct beiscsi_hba {

	struct hba_parameters params;

	struct hwi_controller *phwi_ctrlr;
@@ -343,16 +358,13 @@ struct beiscsi_hba { 
	spinlock_t isr_lock;

	spinlock_t async_pdu_lock;

	unsigned int age;

	unsigned short avlbl_cids;

	unsigned short cid_alloc;

	unsigned short cid_free;

	struct list_head hba_queue;

#define BE_MAX_SESSION 2048

#define BE_SET_CID_TO_CRI(cri_index, cid) \

			  (phba->cid_to_cri_map[cid] = cri_index)

#define BE_GET_CRI_FROM_CID(cid) (phba->cid_to_cri_map[cid])

	unsigned short cid_to_cri_map[BE_MAX_SESSION];

	unsigned short *cid_array;

	struct ulp_cid_info *cid_array_info[BEISCSI_ULP_COUNT];

	struct iscsi_endpoint **ep_array;

	struct beiscsi_conn **conn_table;

	struct iscsi_boot_kset *boot_kset;

drivers/scsi/be2iscsi/be_mgmt.c

+14 −2
Original line number Diff line number Diff line
@@ -1338,9 +1338,21 @@ beiscsi_active_cid_disp(struct device *dev, struct device_attribute *attr, 
{

	struct Scsi_Host *shost = class_to_shost(dev);

	struct beiscsi_hba *phba = iscsi_host_priv(shost);

	uint16_t avlbl_cids = 0, ulp_num, len = 0, total_cids = 0;



	return snprintf(buf, PAGE_SIZE, "%d\n",

		       (phba->params.cxns_per_ctrl - phba->avlbl_cids));

	for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {

		if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {

			avlbl_cids = BEISCSI_ULP_AVLBL_CID(phba, ulp_num);

			total_cids = BEISCSI_GET_CID_COUNT(phba, ulp_num);

			len += snprintf(buf+len, PAGE_SIZE - len,

					"ULP%d : %d\n", ulp_num,

					(total_cids - avlbl_cids));

		} else

			len += snprintf(buf+len, PAGE_SIZE - len,

					"ULP%d : %d\n", ulp_num, 0);

	}



	return len;

}



/**