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annotate usr/src/uts/common/sys/lpif.h @ 14074:cac17ab5e600

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3862 stmf + kstat = kernel panic 3863 stmf_itl_task_start() must check for ilu->ilu_kstat_io is non-null 3864 memory leak in the iSCSI code Reviewed by: Adam Leventhal <ahl@delphix.com> Reviewed by: Jeremy Jones <jeremy@delphix.com> Reviewed by: Sebastien Roy <sebastien.roy@delphix.com> Reviewed by: Dan McDonald <danmcd@nexenta.com> Reviewed by: Garrett D'Amore <garrett@damore.org> Reviewed by: Richard Elling <richard.elling@gmail.com> Approved by: Gordon Ross <gwr@nexenta.com>
author Jeff Biseda <jeff.biseda@delphix.com>
date Sun, 07 Jul 2013 18:18:37 -0800
parents 0ed71edeac88
children
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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License (the "License").
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6 * You may not use this file except in compliance with the License.
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7 *
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8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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9 * or http://www.opensolaris.org/os/licensing.
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10 * See the License for the specific language governing permissions
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11 * and limitations under the License.
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12 *
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13 * When distributing Covered Code, include this CDDL HEADER in each
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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 * If applicable, add the following below this CDDL HEADER, with the
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16 * fields enclosed by brackets "[]" replaced with your own identifying
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17 * information: Portions Copyright [yyyy] [name of copyright owner]
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18 *
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19 * CDDL HEADER END
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20 */
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21 /*
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22 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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cac17ab5e600 3862 stmf + kstat = kernel panic
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23 * Copyright (c) 2013 by Delphix. All rights reserved.
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24 */
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25 #ifndef _LPIF_H
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26 #define _LPIF_H
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27
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28 /*
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29 * Definitions for stmf LUs and lu providers.
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30 */
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31
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32 #include <sys/stmf_defines.h>
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33 #include <sys/stmf.h>
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34
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35 #ifdef __cplusplus
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36 extern "C" {
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37 #endif
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38
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39 #define LPIF_REV_1 0x00010000
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40 #define LPIF_REV_2 0x00020000
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41
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42 typedef struct stmf_lu {
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43 void *lu_stmf_private;
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44 void *lu_provider_private;
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45
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46 struct scsi_devid_desc *lu_id;
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47 char *lu_alias; /* optional */
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48 struct stmf_lu_provider *lu_lp;
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49 uint32_t lu_abort_timeout; /* In seconds */
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50
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51 /* SAM Device Server Class */
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52 stmf_status_t (*lu_task_alloc)(struct scsi_task *task);
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53 void (*lu_new_task)(struct scsi_task *task,
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54 struct stmf_data_buf *initial_dbuf);
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55 void (*lu_dbuf_xfer_done)(struct scsi_task *task,
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56 struct stmf_data_buf *dbuf);
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57 /*
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58 * If completion confirmation is not requested, status xfer done
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59 * is called after the transport has confirmed that status has been
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60 * sent. If completion confirmation is requested then the HBA will
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61 * request a completion confirmation from the host and upon receiving
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62 * the same, this entry point will be called.
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63 */
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64 void (*lu_send_status_done)(struct scsi_task *task);
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65 void (*lu_task_free)(struct scsi_task *task);
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66 stmf_status_t (*lu_abort)(struct stmf_lu *lu,
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67 int abort_cmd, void *arg, uint32_t flags);
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68 void (*lu_task_poll)(struct scsi_task *task);
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69 void (*lu_ctl)(struct stmf_lu *lu, int cmd,
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70 void *arg);
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71 stmf_status_t (*lu_info)(uint32_t cmd, struct stmf_lu *lu,
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72 void *arg, uint8_t *buf, uint32_t *bufsizep);
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73 void (*lu_event_handler)(struct stmf_lu *lu,
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74 int eventid, void *arg, uint32_t flags);
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75 void *lu_proxy_reg_arg;
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76 uint32_t lu_proxy_reg_arg_len;
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77 void (*lu_dbuf_free)(struct scsi_task *task,
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78 struct stmf_data_buf *dbuf);
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79 } stmf_lu_t;
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80
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81 /*
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82 * Abort cmd
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83 */
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84 #define STMF_LU_ABORT_TASK 1
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85 #define STMF_LU_RESET_STATE 2
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86 #define STMF_LU_ITL_HANDLE_REMOVED 3
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87
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88 /*
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89 * Asymmetric access state
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90 */
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91 #define STMF_LU_ACTIVE 0
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92 #define STMF_LU_STANDBY 1
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93
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94 /*
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95 * proxy register msg types
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96 */
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97 #define STMF_MSG_LU_REGISTER 0
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98 #define STMF_MSG_LU_ACTIVE 1
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99 #define STMF_MSG_LU_DEREGISTER 2
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100
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101
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102 #define STMF_PROXY_READ 1
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103 #define STMF_PROXY_WRITE 2
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104
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105 /*
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106 * Reasons for itl handle removal. Passed in flags.
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107 */
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108 #define STMF_ITL_REASON_MASK 0x0f
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109 #define STMF_ITL_REASON_UNKNOWN 0x0
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110 #define STMF_ITL_REASON_DEREG_REQUEST 0x1
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111 #define STMF_ITL_REASON_USER_REQUEST 0x2
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112 #define STMF_ITL_REASON_IT_NEXUS_LOSS 0x3
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113
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114 typedef struct stmf_lu_provider {
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115 void *lp_stmf_private;
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116 void *lp_private;
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117
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118 uint32_t lp_lpif_rev; /* Currently LPIF_REV_2 */
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119 int lp_instance;
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120 char *lp_name;
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121 void (*lp_cb)(struct stmf_lu_provider *lp,
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122 int cmd, void *arg, uint32_t flags);
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123 uint8_t lp_alua_support;
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124 stmf_status_t (*lp_proxy_msg)(uint8_t *luid,
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125 void *proxy_reg_arg, uint32_t proxy_reg_arg_len, uint32_t type);
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126 } stmf_lu_provider_t;
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127
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128 stmf_status_t stmf_deregister_lu_provider(stmf_lu_provider_t *lp);
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129 stmf_status_t stmf_register_lu_provider(stmf_lu_provider_t *lp);
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130 stmf_status_t stmf_register_lu(stmf_lu_t *lup);
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131 stmf_status_t stmf_deregister_lu(stmf_lu_t *lup);
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132 stmf_status_t stmf_set_lu_access(stmf_lu_t *lup, uint8_t access_state);
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133 stmf_status_t stmf_proxy_scsi_cmd(scsi_task_t *, stmf_data_buf_t *dbuf);
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134 int stmf_is_standby_port(scsi_task_t *);
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135
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136 #ifdef __cplusplus
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137 }
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138 #endif
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139
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140 #endif /* _LPIF_H */