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Commit e2bac7c5 authored by Mike Christie's avatar Mike Christie Committed by James Bottomley
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[SCSI] iscsi_tcp: remove unused r2t handling 



libiscsi's iscsi_prep_data_out_pdu now handles what
iscsi_tcp's helpers were so we can remove iscsi_tcp's helpers.

Signed-off-by: default avatarMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent e5a7efef

drivers/scsi/iscsi_tcp.c

+0 −91
Original line number Diff line number Diff line
@@ -553,48 +553,6 @@ iscsi_data_in(struct iscsi_conn *conn, struct iscsi_task *task) 
	return 0;

}



/**

 * iscsi_solicit_data_init - initialize first Data-Out

 * @conn: iscsi connection

 * @task: scsi command task

 * @r2t: R2T info

 *

 * Notes:

 *	Initialize first Data-Out within this R2T sequence and finds

 *	proper data_offset within this SCSI command.

 *

 *	This function is called with connection lock taken.

 **/

static void

iscsi_solicit_data_init(struct iscsi_conn *conn, struct iscsi_task *task,

			struct iscsi_r2t_info *r2t)

{

	struct iscsi_data *hdr;



	hdr = &r2t->dtask.hdr;

	memset(hdr, 0, sizeof(struct iscsi_data));

	hdr->ttt = r2t->ttt;

	hdr->datasn = cpu_to_be32(r2t->solicit_datasn);

	r2t->solicit_datasn++;

	hdr->opcode = ISCSI_OP_SCSI_DATA_OUT;

	memcpy(hdr->lun, task->hdr->lun, sizeof(hdr->lun));

	hdr->itt = task->hdr->itt;

	hdr->exp_statsn = r2t->exp_statsn;

	hdr->offset = cpu_to_be32(r2t->data_offset);

	if (r2t->data_length > conn->max_xmit_dlength) {

		hton24(hdr->dlength, conn->max_xmit_dlength);

		r2t->data_count = conn->max_xmit_dlength;

		hdr->flags = 0;

	} else {

		hton24(hdr->dlength, r2t->data_length);

		r2t->data_count = r2t->data_length;

		hdr->flags = ISCSI_FLAG_CMD_FINAL;

	}

	conn->dataout_pdus_cnt++;



	r2t->sent = 0;

}



/**

 * iscsi_r2t_rsp - iSCSI R2T Response processing

 * @conn: iscsi connection
@@ -1311,55 +1269,6 @@ iscsi_tcp_send_linear_data_prepare(struct iscsi_conn *conn, void *data, 
				data, len, NULL, tx_hash);

}



/**

 * iscsi_solicit_data_cont - initialize next Data-Out

 * @conn: iscsi connection

 * @task: scsi command task

 * @r2t: R2T info

 * @left: bytes left to transfer

 *

 * Notes:

 *	Initialize next Data-Out within this R2T sequence and continue

 *	to process next Scatter-Gather element(if any) of this SCSI command.

 *

 *	Called under connection lock.

 **/

static int

iscsi_solicit_data_cont(struct iscsi_conn *conn, struct iscsi_task *task,

			struct iscsi_r2t_info *r2t)

{

	struct iscsi_data *hdr;

	int new_offset, left;



	BUG_ON(r2t->data_length - r2t->sent < 0);

	left = r2t->data_length - r2t->sent;

	if (left == 0)

		return 0;



	hdr = &r2t->dtask.hdr;

	memset(hdr, 0, sizeof(struct iscsi_data));

	hdr->ttt = r2t->ttt;

	hdr->datasn = cpu_to_be32(r2t->solicit_datasn);

	r2t->solicit_datasn++;

	hdr->opcode = ISCSI_OP_SCSI_DATA_OUT;

	memcpy(hdr->lun, task->hdr->lun, sizeof(hdr->lun));

	hdr->itt = task->hdr->itt;

	hdr->exp_statsn = r2t->exp_statsn;

	new_offset = r2t->data_offset + r2t->sent;

	hdr->offset = cpu_to_be32(new_offset);

	if (left > conn->max_xmit_dlength) {

		hton24(hdr->dlength, conn->max_xmit_dlength);

		r2t->data_count = conn->max_xmit_dlength;

	} else {

		hton24(hdr->dlength, left);

		r2t->data_count = left;

		hdr->flags = ISCSI_FLAG_CMD_FINAL;

	}



	conn->dataout_pdus_cnt++;

	return 1;

}



static int iscsi_tcp_pdu_init(struct iscsi_task *task,

			      unsigned int offset, unsigned int count)

{