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1 : : /* SPDX-License-Identifier: BSD-3-Clause 2 : : * Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>. 3 : : * Copyright (C) 2016 Intel Corporation. 4 : : * All rights reserved. 5 : : */ 6 : : 7 : : #include "spdk/env.h" 8 : : #include "spdk/log.h" 9 : : #include "iscsi/conn.h" 10 : : #include "iscsi/task.h" 11 : : #include "iscsi/tgt_node.h" 12 : : 13 : : static void 14 : 6314133 : iscsi_task_free(struct spdk_scsi_task *scsi_task) 15 : : { 16 : : uint64_t tsc_diff; 17 : 6314133 : struct spdk_iscsi_task *task = iscsi_task_from_scsi_task(scsi_task); 18 : : 19 [ - + # # : 6314133 : if (task->conn->target->histogram) { # # # # # # # # # # ] 20 [ # # # # ]: 0 : tsc_diff = spdk_get_ticks() - task->start_tsc; 21 [ # # # # : 0 : spdk_histogram_data_tally(task->conn->target->histogram, tsc_diff); # # # # # # # # ] 22 : 0 : } 23 : : 24 [ + + # # : 6314133 : if (task->parent) { # # ] 25 [ + + # # : 744607 : if (task->scsi.dxfer_dir == SPDK_SCSI_DIR_FROM_DEV) { # # # # ] 26 [ - + # # : 286434 : assert(task->conn->data_in_cnt > 0); # # # # # # # # ] 27 [ # # # # : 286434 : task->conn->data_in_cnt--; # # ] 28 : 0 : } 29 : : 30 [ # # # # : 744607 : spdk_scsi_task_put(&task->parent->scsi); # # ] 31 [ # # # # ]: 744607 : task->parent = NULL; 32 : 0 : } 33 : : 34 [ + + ]: 6314133 : if (iscsi_task_get_mobj(task)) { 35 : 57 : iscsi_datapool_put(iscsi_task_get_mobj(task)); 36 : 0 : } 37 : : 38 : 6314133 : iscsi_task_disassociate_pdu(task); 39 [ - + # # : 6314133 : assert(task->conn->pending_task_cnt > 0); # # # # # # # # ] 40 [ # # # # : 6314133 : task->conn->pending_task_cnt--; # # ] 41 [ # # ]: 6314133 : spdk_mempool_put(g_iscsi.task_pool, (void *)task); 42 : 6314133 : } 43 : : 44 : : struct spdk_iscsi_task * 45 : 6314133 : iscsi_task_get(struct spdk_iscsi_conn *conn, struct spdk_iscsi_task *parent, 46 : : spdk_scsi_task_cpl cpl_fn) 47 : : { 48 : : struct spdk_iscsi_task *task; 49 : : 50 [ # # ]: 6314133 : task = spdk_mempool_get(g_iscsi.task_pool); 51 [ - + ]: 6314133 : if (!task) { 52 : 0 : SPDK_ERRLOG("Unable to get task\n"); 53 [ # # ]: 0 : abort(); 54 : : } 55 : : 56 [ - + # # ]: 6314133 : assert(conn != NULL); 57 [ - + ]: 6314133 : memset(task, 0, sizeof(*task)); 58 [ # # # # ]: 6314133 : task->start_tsc = spdk_get_ticks(); 59 [ # # # # ]: 6314133 : task->conn = conn; 60 [ - + # # : 6314133 : assert(conn->pending_task_cnt < UINT32_MAX); # # # # ] 61 [ # # ]: 6314133 : conn->pending_task_cnt++; 62 [ # # ]: 6314133 : spdk_scsi_task_construct(&task->scsi, 63 : 0 : cpl_fn, 64 : : iscsi_task_free); 65 [ + + ]: 6314133 : if (parent) { 66 [ # # # # ]: 744607 : parent->scsi.ref++; 67 [ # # # # ]: 744607 : task->parent = parent; 68 [ # # # # : 744607 : task->tag = parent->tag; # # # # ] 69 [ # # # # : 744607 : task->lun_id = parent->lun_id; # # # # ] 70 [ # # # # : 744607 : task->scsi.dxfer_dir = parent->scsi.dxfer_dir; # # # # # # # # ] 71 [ # # # # : 744607 : task->scsi.transfer_len = parent->scsi.transfer_len; # # # # # # # # ] 72 [ # # # # : 744607 : task->scsi.lun = parent->scsi.lun; # # # # # # # # ] 73 [ # # # # : 744607 : task->scsi.cdb = parent->scsi.cdb; # # # # # # # # ] 74 [ # # # # : 744607 : task->scsi.target_port = parent->scsi.target_port; # # # # # # # # ] 75 [ # # # # : 744607 : task->scsi.initiator_port = parent->scsi.initiator_port; # # # # # # # # ] 76 [ + + # # : 744607 : if (task->scsi.dxfer_dir == SPDK_SCSI_DIR_FROM_DEV) { # # # # ] 77 [ # # ]: 286434 : conn->data_in_cnt++; 78 : 0 : } 79 : 0 : } 80 : : 81 : 6314133 : return task; 82 : : }