Commit 8658d568 authored by Chunyang Hui's avatar Chunyang Hui Committed by Jim Harris
Browse files

bdev/iscsi: Add reset function for iscsi initiator 



Change-Id: I77c2b81878ebcb18dd9efffa394c1d07f523f780
Signed-off-by: default avatarChunyang Hui <Chunyang.hui@intel.com>
Reviewed-on: https://review.gerrithub.io/417797


Tested-by: default avatarSPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
parent 564db674

lib/bdev/iscsi/bdev_iscsi.c

+45 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ 
#include "spdk/util.h"

#include "spdk/rpc.h"

#include "spdk/string.h"

#include "spdk/iscsi_spec.h"



#include "spdk_internal/log.h"

#include "spdk/bdev_module.h"
@@ -342,6 +343,46 @@ bdev_iscsi_unmap(struct bdev_iscsi_lun *lun, struct bdev_iscsi_io *iscsi_io, 
	}

}



static void

bdev_iscsi_reset_cb(struct iscsi_context *context __attribute__((unused)), int status,

		    void *command_data, void *private_data)

{

	uint32_t tmf_response;

	struct bdev_iscsi_io *iscsi_io = private_data;



	tmf_response = *(uint32_t *)command_data;

	if (tmf_response == ISCSI_TASK_FUNC_RESP_COMPLETE) {

		bdev_iscsi_io_complete(iscsi_io, SPDK_BDEV_IO_STATUS_SUCCESS);

	} else {

		bdev_iscsi_io_complete(iscsi_io, SPDK_BDEV_IO_STATUS_FAILED);

	}

}



static void

_bdev_iscsi_reset(void *_bdev_io)

{

	int rc;

	struct spdk_bdev_io *bdev_io = _bdev_io;

	struct bdev_iscsi_lun *lun = (struct bdev_iscsi_lun *)bdev_io->bdev->ctxt;

	struct bdev_iscsi_io *iscsi_io = (struct bdev_iscsi_io *)bdev_io->driver_ctx;

	struct iscsi_context *context = lun->context;



	rc = iscsi_task_mgmt_lun_reset_async(context, 0,

					     bdev_iscsi_reset_cb, iscsi_io);

	if (rc != 0) {

		SPDK_ERRLOG("failed to do iscsi reset\n");

		bdev_iscsi_io_complete(iscsi_io, SPDK_BDEV_IO_STATUS_FAILED);

		return;

	}

}



static void

bdev_iscsi_reset(struct spdk_bdev_io *bdev_io)

{

	struct bdev_iscsi_lun *lun = (struct bdev_iscsi_lun *)bdev_io->bdev->ctxt;

	spdk_thread_send_msg(lun->master_td, _bdev_iscsi_reset, bdev_io);

}



static int

bdev_iscsi_poll_lun(struct bdev_iscsi_lun *lun)

{
@@ -426,6 +467,9 @@ static void _bdev_iscsi_submit_request(void *_bdev_io) 
				 ISCSI_IMMEDIATE_DATA_NO,

				 bdev_io->u.bdev.offset_blocks);

		break;

	case SPDK_BDEV_IO_TYPE_RESET:

		bdev_iscsi_reset(bdev_io);

		break;

	case SPDK_BDEV_IO_TYPE_UNMAP:

		bdev_iscsi_unmap(lun, iscsi_io,

				 bdev_io->u.bdev.offset_blocks,
@@ -460,6 +504,7 @@ bdev_iscsi_io_type_supported(void *ctx, enum spdk_bdev_io_type io_type) 
	case SPDK_BDEV_IO_TYPE_WRITE:

	case SPDK_BDEV_IO_TYPE_FLUSH:

	case SPDK_BDEV_IO_TYPE_UNMAP:

	case SPDK_BDEV_IO_TYPE_RESET:

		return true;



	default: