C++ (Cpp) target_submit_cmd Examples

Example #1

File: tfc_cmd.c Project: mjduddin/B14CKB1RD_kernel_m8

static void ft_send_work(struct work_struct *work)
{
	struct ft_cmd *cmd = container_of(work, struct ft_cmd, work);
	struct fc_frame_header *fh = fc_frame_header_get(cmd->req_frame);
	struct fcp_cmnd *fcp;
	int data_dir = 0;
	int task_attr;

	fcp = fc_frame_payload_get(cmd->req_frame, sizeof(*fcp));
	if (!fcp)
		goto err;

	if (fcp->fc_flags & FCP_CFL_LEN_MASK)
		goto err;		

	if (fcp->fc_tm_flags) {
		ft_send_tm(cmd);
		return;
	}

	switch (fcp->fc_flags & (FCP_CFL_RDDATA | FCP_CFL_WRDATA)) {
	case 0:
		data_dir = DMA_NONE;
		break;
	case FCP_CFL_RDDATA:
		data_dir = DMA_FROM_DEVICE;
		break;
	case FCP_CFL_WRDATA:
		data_dir = DMA_TO_DEVICE;
		break;
	case FCP_CFL_WRDATA | FCP_CFL_RDDATA:
		goto err;	
	}
	switch (fcp->fc_pri_ta & FCP_PTA_MASK) {
	case FCP_PTA_HEADQ:
		task_attr = MSG_HEAD_TAG;
		break;
	case FCP_PTA_ORDERED:
		task_attr = MSG_ORDERED_TAG;
		break;
	case FCP_PTA_ACA:
		task_attr = MSG_ACA_TAG;
		break;
	case FCP_PTA_SIMPLE: 
	default:
		task_attr = MSG_SIMPLE_TAG;
	}

	fc_seq_exch(cmd->seq)->lp->tt.seq_set_resp(cmd->seq, ft_recv_seq, cmd);
	target_submit_cmd(&cmd->se_cmd, cmd->sess->se_sess, fcp->fc_cdb,
			&cmd->ft_sense_buffer[0], scsilun_to_int(&fcp->fc_lun),
			ntohl(fcp->fc_dl), task_attr, data_dir, 0);
	pr_debug("r_ctl %x alloc target_submit_cmd\n", fh->fh_r_ctl);
	return;

err:
	ft_send_resp_code_and_free(cmd, FCP_CMND_FIELDS_INVALID);
}

Example #2

File: tfc_cmd.c Project: LuweiLight/linux-3.14.35-vbal

/*
 * Send new command to target.
 */
static void ft_send_work(struct work_struct *work)
{
	struct ft_cmd *cmd = container_of(work, struct ft_cmd, work);
	struct fc_frame_header *fh = fc_frame_header_get(cmd->req_frame);
	struct fcp_cmnd *fcp;
	int data_dir = 0;
	int task_attr;

	fcp = fc_frame_payload_get(cmd->req_frame, sizeof(*fcp));
	if (!fcp)
		goto err;

	if (fcp->fc_flags & FCP_CFL_LEN_MASK)
		goto err;		/* not handling longer CDBs yet */

	/*
	 * Check for FCP task management flags
	 */
	if (fcp->fc_tm_flags) {
		ft_send_tm(cmd);
		return;
	}

	switch (fcp->fc_flags & (FCP_CFL_RDDATA | FCP_CFL_WRDATA)) {
	case 0:
		data_dir = DMA_NONE;
		break;
	case FCP_CFL_RDDATA:
		data_dir = DMA_FROM_DEVICE;
		break;
	case FCP_CFL_WRDATA:
		data_dir = DMA_TO_DEVICE;
		break;
	case FCP_CFL_WRDATA | FCP_CFL_RDDATA:
		goto err;	/* TBD not supported by tcm_fc yet */
	}
	/*
	 * Locate the SAM Task Attr from fc_pri_ta
	 */
	switch (fcp->fc_pri_ta & FCP_PTA_MASK) {
	case FCP_PTA_HEADQ:
		task_attr = MSG_HEAD_TAG;
		break;
	case FCP_PTA_ORDERED:
		task_attr = MSG_ORDERED_TAG;
		break;
	case FCP_PTA_ACA:
		task_attr = MSG_ACA_TAG;
		break;
	case FCP_PTA_SIMPLE: /* Fallthrough */
	default:
		task_attr = MSG_SIMPLE_TAG;
	}

	fc_seq_exch(cmd->seq)->lp->tt.seq_set_resp(cmd->seq, ft_recv_seq, cmd);
	/*
	 * Use a single se_cmd->cmd_kref as we expect to release se_cmd
	 * directly from ft_check_stop_free callback in response path.
	 */
	if (target_submit_cmd(&cmd->se_cmd, cmd->sess->se_sess, fcp->fc_cdb,
			      &cmd->ft_sense_buffer[0], scsilun_to_int(&fcp->fc_lun),
			      ntohl(fcp->fc_dl), task_attr, data_dir, 0))
		goto err;

	pr_debug("r_ctl %x alloc target_submit_cmd\n", fh->fh_r_ctl);
	return;

err:
	ft_send_resp_code_and_free(cmd, FCP_CMND_FIELDS_INVALID);
}