Commit f10ab66f authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by James Bottomley
Browse files

[SCSI] tgt: convert to use the data buffer accessors 



- convert to use the new accessors for the sg lists and the
parameters.

Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent 1237c98d

drivers/scsi/ibmvscsi/ibmvstgt.c

+1 −1
Original line number Diff line number Diff line
@@ -292,7 +292,7 @@ static int ibmvstgt_cmd_done(struct scsi_cmnd *sc, 
	dprintk("%p %p %x %u\n", iue, target, vio_iu(iue)->srp.cmd.cdb[0],

		cmd->usg_sg);



	if (sc->use_sg)

	if (scsi_sg_count(sc))

		err = srp_transfer_data(sc, &vio_iu(iue)->srp.cmd, ibmvstgt_rdma, 1, 1);



	spin_lock_irqsave(&target->lock, flags);

drivers/scsi/libsrp.c

+12 −11
Original line number Diff line number Diff line
@@ -192,18 +192,18 @@ static int srp_direct_data(struct scsi_cmnd *sc, struct srp_direct_buf *md, 


	if (dma_map) {

		iue = (struct iu_entry *) sc->SCp.ptr;

		sg = sc->request_buffer;

		sg = scsi_sglist(sc);



		dprintk("%p %u %u %d\n", iue, sc->request_bufflen,

			md->len, sc->use_sg);

		dprintk("%p %u %u %d\n", iue, scsi_bufflen(sc),

			md->len, scsi_sg_count(sc));



		nsg = dma_map_sg(iue->target->dev, sg, sc->use_sg,

		nsg = dma_map_sg(iue->target->dev, sg, scsi_sg_count(sc),

				 DMA_BIDIRECTIONAL);

		if (!nsg) {

			printk("fail to map %p %d\n", iue, sc->use_sg);

			printk("fail to map %p %d\n", iue, scsi_sg_count(sc));

			return 0;

		}

		len = min(sc->request_bufflen, md->len);

		len = min(scsi_bufflen(sc), md->len);

	} else

		len = md->len;
@@ -229,10 +229,10 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd, 


	if (dma_map || ext_desc) {

		iue = (struct iu_entry *) sc->SCp.ptr;

		sg = sc->request_buffer;

		sg = scsi_sglist(sc);



		dprintk("%p %u %u %d %d\n",

			iue, sc->request_bufflen, id->len,

			iue, scsi_bufflen(sc), id->len,

			cmd->data_in_desc_cnt, cmd->data_out_desc_cnt);

	}
@@ -268,13 +268,14 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd, 


rdma:

	if (dma_map) {

		nsg = dma_map_sg(iue->target->dev, sg, sc->use_sg, DMA_BIDIRECTIONAL);

		nsg = dma_map_sg(iue->target->dev, sg, scsi_sg_count(sc),

				 DMA_BIDIRECTIONAL);

		if (!nsg) {

			eprintk("fail to map %p %d\n", iue, sc->use_sg);

			eprintk("fail to map %p %d\n", iue, scsi_sg_count(sc));

			err = -EIO;

			goto free_mem;

		}

		len = min(sc->request_bufflen, id->len);

		len = min(scsi_bufflen(sc), id->len);

	} else

		len = id->len;

drivers/scsi/scsi_tgt_if.c

+1 −1
Original line number Diff line number Diff line
@@ -112,7 +112,7 @@ int scsi_tgt_uspace_send_cmd(struct scsi_cmnd *cmd, u64 itn_id, 
	memset(&ev, 0, sizeof(ev));

	ev.p.cmd_req.host_no = shost->host_no;

	ev.p.cmd_req.itn_id = itn_id;

	ev.p.cmd_req.data_len = cmd->request_bufflen;

	ev.p.cmd_req.data_len = scsi_bufflen(cmd);

	memcpy(ev.p.cmd_req.scb, cmd->cmnd, sizeof(ev.p.cmd_req.scb));

	memcpy(ev.p.cmd_req.lun, lun, sizeof(ev.p.cmd_req.lun));

	ev.p.cmd_req.attribute = cmd->tag;

drivers/scsi/scsi_tgt_lib.c

+6 −5
Original line number Diff line number Diff line
@@ -331,7 +331,7 @@ static void scsi_tgt_cmd_done(struct scsi_cmnd *cmd) 


	scsi_tgt_uspace_send_status(cmd, tcmd->itn_id, tcmd->tag);



	if (cmd->request_buffer)

	if (scsi_sglist(cmd))

		scsi_free_sgtable(cmd);



	queue_work(scsi_tgtd, &tcmd->work);
@@ -365,14 +365,15 @@ static int scsi_tgt_init_cmd(struct scsi_cmnd *cmd, gfp_t gfp_mask) 


	cmd->request_bufflen = rq->data_len;



	dprintk("cmd %p cnt %d %lu\n", cmd, cmd->use_sg, rq_data_dir(rq));

	count = blk_rq_map_sg(rq->q, rq, cmd->request_buffer);

	if (likely(count <= cmd->use_sg)) {

	dprintk("cmd %p cnt %d %lu\n", cmd, scsi_sg_count(cmd),

		rq_data_dir(rq));

	count = blk_rq_map_sg(rq->q, rq, scsi_sglist(cmd));

	if (likely(count <= scsi_sg_count(cmd))) {

		cmd->use_sg = count;

		return 0;

	}



	eprintk("cmd %p cnt %d\n", cmd, cmd->use_sg);

	eprintk("cmd %p cnt %d\n", cmd, scsi_sg_count(cmd));

	scsi_free_sgtable(cmd);

	return -EINVAL;

}