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Commit 9ecf0b0d authored by Quinn Tran's avatar Quinn Tran Committed by Martin K. Petersen
Browse files

scsi: qla2xxx: Add option for use reserve exch for ELS 



Add option to tell FW to reserve 1/2 of emergency exchanges for ELS.

Signed-off-by: default avatarQuinn Tran <quinn.tran@cavium.com>
Signed-off-by: default avatarHimanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 1586e07a

drivers/scsi/qla2xxx/qla_gbl.h

+1 −0
Original line number Diff line number Diff line
@@ -148,6 +148,7 @@ extern int ql2xuctrlirq; 
extern int ql2xnvmeenable;

extern int ql2xautodetectsfp;

extern int ql2xenablemsix;

extern int qla2xuseresexchforels;



extern int qla2x00_loop_reset(scsi_qla_host_t *);

extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int);

drivers/scsi/qla2xxx/qla_init.c

+6 −0
Original line number Diff line number Diff line
@@ -3348,6 +3348,12 @@ qla24xx_update_fw_options(scsi_qla_host_t *vha) 
			ha->fw_options[2] |= BIT_4;

		else

			ha->fw_options[2] &= ~BIT_4;



		/* Reserve 1/2 of emergency exchanges for ELS.*/

		if (qla2xuseresexchforels)

			ha->fw_options[2] |= BIT_8;

		else

			ha->fw_options[2] &= ~BIT_8;

	}



	ql_dbg(ql_dbg_init, vha, 0x00e8,

drivers/scsi/qla2xxx/qla_os.c

+6 −0
Original line number Diff line number Diff line
@@ -277,6 +277,12 @@ MODULE_PARM_DESC(ql2xenablemsix, 
		 " 1 -- enable MSI-X interrupt mechanism.\n"

		 " 2 -- enable MSI interrupt mechanism.\n");



int qla2xuseresexchforels;

module_param(qla2xuseresexchforels, int, 0444);

MODULE_PARM_DESC(qla2xuseresexchforels,

		 "Reserve 1/2 of emergency exchanges for ELS.\n"

		 " 0 (default): disabled");



/*

 * SCSI host template entry points

 */