1 // SPDX-License-Identifier: GPL-2.0-only
39 	se_cmd = &cmd->se_cmd;  in _ft_dump_cmd()
41 		caller, cmd, cmd->sess, cmd->seq, se_cmd);  in _ft_dump_cmd()
44 		caller, cmd, se_cmd->t_data_nents,  in _ft_dump_cmd()
45 	       se_cmd->data_length, se_cmd->se_cmd_flags);  in _ft_dump_cmd()
47 	for_each_sg(se_cmd->t_data_sg, sg, se_cmd->t_data_nents, count)  in _ft_dump_cmd()
51 			sg_page(sg), sg->length, sg->offset);  in _ft_dump_cmd()
53 	sp = cmd->seq;  in _ft_dump_cmd()
58 			caller, cmd, ep->sid, ep->did, ep->oxid, ep->rxid,  in _ft_dump_cmd()
59 			sp->id, ep->esb_stat);  in _ft_dump_cmd()
76 	sess = cmd->sess;  in ft_free_cmd()
77 	fp = cmd->req_frame;  in ft_free_cmd()
81 	target_free_tag(sess->se_sess, &cmd->se_cmd);  in ft_free_cmd()
110 	if (cmd->aborted)  in ft_queue_status()
113 	ep = fc_seq_exch(cmd->seq);  in ft_queue_status()
114 	lport = ep->lp;  in ft_queue_status()
115 	len = sizeof(*fcp) + se_cmd->scsi_sense_length;  in ft_queue_status()
118 		se_cmd->scsi_status = SAM_STAT_TASK_SET_FULL;  in ft_queue_status()
119 		return -ENOMEM;  in ft_queue_status()
124 	fcp->resp.fr_status = se_cmd->scsi_status;  in ft_queue_status()
126 	len = se_cmd->scsi_sense_length;  in ft_queue_status()
128 		fcp->resp.fr_flags |= FCP_SNS_LEN_VAL;  in ft_queue_status()
129 		fcp->ext.fr_sns_len = htonl(len);  in ft_queue_status()
130 		memcpy((fcp + 1), se_cmd->sense_buffer, len);  in ft_queue_status()
137 	if (se_cmd->se_cmd_flags & (SCF_OVERFLOW_BIT | SCF_UNDERFLOW_BIT)) {  in ft_queue_status()
138 		if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT)  in ft_queue_status()
139 			fcp->resp.fr_flags |= FCP_RESID_OVER;  in ft_queue_status()
141 			fcp->resp.fr_flags |= FCP_RESID_UNDER;  in ft_queue_status()
142 		fcp->ext.fr_resid = cpu_to_be32(se_cmd->residual_count);  in ft_queue_status()
148 	cmd->seq = fc_seq_start_next(cmd->seq);  in ft_queue_status()
149 	fc_fill_fc_hdr(fp, FC_RCTL_DD_CMD_STATUS, ep->did, ep->sid, FC_TYPE_FCP,  in ft_queue_status()
152 	rc = fc_seq_send(lport, cmd->seq, fp);  in ft_queue_status()
155 				    "xid <0x%x>\n", __func__, fp, ep->xid);  in ft_queue_status()
159 		 * been re-queued by target-core.  in ft_queue_status()
161 		se_cmd->scsi_status = SAM_STAT_TASK_SET_FULL;  in ft_queue_status()
162 		return -ENOMEM;  in ft_queue_status()
164 	fc_exch_done(cmd->seq);  in ft_queue_status()
167 	 * ahead of ft_check_stop_free() -> transport_generic_free_cmd()  in ft_queue_status()
168 	 * final se_cmd->cmd_kref put.  in ft_queue_status()
170 	target_put_sess_cmd(&cmd->se_cmd);  in ft_queue_status()
189 	if (cmd->aborted)  in ft_write_pending()
191 	ep = fc_seq_exch(cmd->seq);  in ft_write_pending()
192 	lport = ep->lp;  in ft_write_pending()
195 		return -ENOMEM; /* Signal QUEUE_FULL */  in ft_write_pending()
199 	txrdy->ft_burst_len = htonl(se_cmd->data_length);  in ft_write_pending()
201 	cmd->seq = fc_seq_start_next(cmd->seq);  in ft_write_pending()
202 	fc_fill_fc_hdr(fp, FC_RCTL_DD_DATA_DESC, ep->did, ep->sid, FC_TYPE_FCP,  in ft_write_pending()
206 	f_ctl = ntoh24(fh->fh_f_ctl);  in ft_write_pending()
213 		if ((ep->xid <= lport->lro_xid) &&  in ft_write_pending()
214 		    (fh->fh_r_ctl == FC_RCTL_DD_DATA_DESC)) {  in ft_write_pending()
215 			if ((se_cmd->se_cmd_flags & SCF_SCSI_DATA_CDB) &&  in ft_write_pending()
216 			    lport->tt.ddp_target(lport, ep->xid,  in ft_write_pending()
217 						 se_cmd->t_data_sg,  in ft_write_pending()
218 						 se_cmd->t_data_nents))  in ft_write_pending()
219 				cmd->was_ddp_setup = 1;  in ft_write_pending()
222 	fc_seq_send(lport, cmd->seq, fp);  in ft_write_pending()
227  * FC sequence response handler for follow-on sequences (data) and aborts.
236 		cmd->seq = NULL;  in ft_recv_seq()
237 		cmd->aborted = true;  in ft_recv_seq()
243 	switch (fh->fh_r_ctl) {  in ft_recv_seq()
252 		       __func__, fh->fh_r_ctl);  in ft_recv_seq()
255 		transport_generic_free_cmd(&cmd->se_cmd, 0);  in ft_recv_seq()
278 		  ntoh24(fh->fh_s_id), ntohs(fh->fh_ox_id), status, code);  in ft_send_resp_status()
287 	fcp->resp.fr_status = status;  in ft_send_resp_status()
289 		fcp->ext.fr_rsp_len = htonl(sizeof(*info));  in ft_send_resp_status()
290 		fcp->resp.fr_flags |= FCP_RSP_LEN_VAL;  in ft_send_resp_status()
292 		info->rsp_code = code;  in ft_send_resp_status()
301 		lport->tt.frame_send(lport, fp);  in ft_send_resp_status()
311 	ft_send_resp_status(cmd->sess->tport->lport,  in ft_send_resp_code()
312 			    cmd->req_frame, SAM_STAT_GOOD, code);  in ft_send_resp_code()
336 	fcp = fc_frame_payload_get(cmd->req_frame, sizeof(*fcp));  in ft_send_tm()
338 	switch (fcp->fc_tm_flags) {  in ft_send_tm()
359 		pr_debug("invalid FCP tm_flags %x\n", fcp->fc_tm_flags);  in ft_send_tm()
364 	/* FIXME: Add referenced task tag for ABORT_TASK */  in ft_send_tm()
365 	rc = target_submit_tmr(&cmd->se_cmd, cmd->sess->se_sess,  in ft_send_tm()
366 		&cmd->ft_sense_buffer[0], scsilun_to_int(&fcp->fc_lun),  in ft_send_tm()
378 	struct se_tmr_req *tmr = se_cmd->se_tmr_req;  in ft_queue_tm_resp()  local
381 	if (cmd->aborted)  in ft_queue_tm_resp()
383 	switch (tmr->response) {  in ft_queue_tm_resp()
399 	pr_debug("tmr fn %d resp %d fcp code %d\n",  in ft_queue_tm_resp()
400 		  tmr->function, tmr->response, code);  in ft_queue_tm_resp()
404 	 * ahead of ft_check_stop_free() -> transport_generic_free_cmd()  in ft_queue_tm_resp()
405 	 * final se_cmd->cmd_kref put.  in ft_queue_tm_resp()
407 	target_put_sess_cmd(&cmd->se_cmd);  in ft_queue_tm_resp()
423 	struct fc_lport *lport = sess->tport->lport;  in ft_recv_cmd()
424 	struct se_session *se_sess = sess->se_sess;  in ft_recv_cmd()
427 	tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);  in ft_recv_cmd()
431 	cmd = &((struct ft_cmd *)se_sess->sess_cmd_map)[tag];  in ft_recv_cmd()
434 	cmd->se_cmd.map_tag = tag;  in ft_recv_cmd()
435 	cmd->se_cmd.map_cpu = cpu;  in ft_recv_cmd()
436 	cmd->sess = sess;  in ft_recv_cmd()
437 	cmd->seq = fc_seq_assign(lport, fp);  in ft_recv_cmd()
438 	if (!cmd->seq) {  in ft_recv_cmd()
439 		target_free_tag(se_sess, &cmd->se_cmd);  in ft_recv_cmd()
442 	cmd->req_frame = fp;		/* hold frame during cmd */  in ft_recv_cmd()
444 	INIT_WORK(&cmd->work, ft_send_work);  in ft_recv_cmd()
445 	queue_work(sess->tport->tpg->workqueue, &cmd->work);  in ft_recv_cmd()
449 	pr_debug("cmd or seq allocation failure - sending BUSY\n");  in ft_recv_cmd()
464 	switch (fh->fh_r_ctl) {  in ft_recv_req()
475 		       __func__, fh->fh_r_ctl);  in ft_recv_req()
488 	struct fc_frame_header *fh = fc_frame_header_get(cmd->req_frame);  in ft_send_work()
493 	fcp = fc_frame_payload_get(cmd->req_frame, sizeof(*fcp));  in ft_send_work()
497 	if (fcp->fc_flags & FCP_CFL_LEN_MASK)  in ft_send_work()
503 	if (fcp->fc_tm_flags) {  in ft_send_work()
508 	switch (fcp->fc_flags & (FCP_CFL_RDDATA | FCP_CFL_WRDATA)) {  in ft_send_work()
524 	switch (fcp->fc_pri_ta & FCP_PTA_MASK) {  in ft_send_work()
539 	fc_seq_set_resp(cmd->seq, ft_recv_seq, cmd);  in ft_send_work()
540 	cmd->se_cmd.tag = fc_seq_exch(cmd->seq)->rxid;  in ft_send_work()
543 	 * Use a single se_cmd->cmd_kref as we expect to release se_cmd  in ft_send_work()
546 	if (target_init_cmd(&cmd->se_cmd, cmd->sess->se_sess,  in ft_send_work()
547 			    &cmd->ft_sense_buffer[0],  in ft_send_work()
548 			    scsilun_to_int(&fcp->fc_lun), ntohl(fcp->fc_dl),  in ft_send_work()
552 	if (target_submit_prep(&cmd->se_cmd, fcp->fc_cdb, NULL, 0, NULL, 0,  in ft_send_work()
556 	target_submit(&cmd->se_cmd);  in ft_send_work()
557 	pr_debug("r_ctl %x target_submit_cmd %p\n", fh->fh_r_ctl, cmd);  in ft_send_work()