drivers/target/iscsi/iscsi_target_nodeattrib.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*******************************************************************************
   3  * This file contains the main functions related to Initiator Node Attributes.
   4  *
   5  * (c) Copyright 2007-2013 Datera, Inc.
   6  *
   7  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
   8  *
   9  ******************************************************************************/
  10
  11 #include <target/target_core_base.h>
  12
  13 #include <target/iscsi/iscsi_target_core.h>
  14 #include "iscsi_target_device.h"
  15 #include "iscsi_target_tpg.h"
  16 #include "iscsi_target_util.h"
  17 #include "iscsi_target_nodeattrib.h"
  18
  19 static inline char *iscsit_na_get_initiatorname(
  20         struct iscsi_node_acl *nacl)
  21 {
  22         struct se_node_acl *se_nacl = &nacl->se_node_acl;
  23
  24         return &se_nacl->initiatorname[0];
  25 }
  26
  27 void iscsit_set_default_node_attribues(
  28         struct iscsi_node_acl *acl,
  29         struct iscsi_portal_group *tpg)
  30 {
  31         struct iscsi_node_attrib *a = &acl->node_attrib;
  32
  33         a->authentication = NA_AUTHENTICATION_INHERITED;
  34         a->dataout_timeout = NA_DATAOUT_TIMEOUT;
  35         a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES;
  36         a->nopin_timeout = NA_NOPIN_TIMEOUT;
  37         a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT;
  38         a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS;
  39         a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS;
  40         a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS;
  41         a->default_erl = tpg->tpg_attrib.default_erl;
  42 }
  43
  44 int iscsit_na_dataout_timeout(
  45         struct iscsi_node_acl *acl,
  46         u32 dataout_timeout)
  47 {
  48         struct iscsi_node_attrib *a = &acl->node_attrib;
  49
  50         if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) {
  51                 pr_err("Requested DataOut Timeout %u larger than"
  52                         " maximum %u\n", dataout_timeout,
  53                         NA_DATAOUT_TIMEOUT_MAX);
  54                 return -EINVAL;
  55         } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) {
  56                 pr_err("Requested DataOut Timeout %u smaller than"
  57                         " minimum %u\n", dataout_timeout,
  58                         NA_DATAOUT_TIMEOUT_MIX);
  59                 return -EINVAL;
  60         }
  61
  62         a->dataout_timeout = dataout_timeout;
  63         pr_debug("Set DataOut Timeout to %u for Initiator Node"
  64                 " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl));
  65
  66         return 0;
  67 }
  68
  69 int iscsit_na_dataout_timeout_retries(
  70         struct iscsi_node_acl *acl,
  71         u32 dataout_timeout_retries)
  72 {
  73         struct iscsi_node_attrib *a = &acl->node_attrib;
  74
  75         if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) {
  76                 pr_err("Requested DataOut Timeout Retries %u larger"
  77                         " than maximum %u", dataout_timeout_retries,
  78                                 NA_DATAOUT_TIMEOUT_RETRIES_MAX);
  79                 return -EINVAL;
  80         } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) {
  81                 pr_err("Requested DataOut Timeout Retries %u smaller"
  82                         " than minimum %u", dataout_timeout_retries,
  83                                 NA_DATAOUT_TIMEOUT_RETRIES_MIN);
  84                 return -EINVAL;
  85         }
  86
  87         a->dataout_timeout_retries = dataout_timeout_retries;
  88         pr_debug("Set DataOut Timeout Retries to %u for"
  89                 " Initiator Node %s\n", a->dataout_timeout_retries,
  90                 iscsit_na_get_initiatorname(acl));
  91
  92         return 0;
  93 }
  94
  95 int iscsit_na_nopin_timeout(
  96         struct iscsi_node_acl *acl,
  97         u32 nopin_timeout)
  98 {
  99         struct iscsi_node_attrib *a = &acl->node_attrib;
 100         struct iscsit_session *sess;
 101         struct iscsit_conn *conn;
 102         struct se_node_acl *se_nacl = &a->nacl->se_node_acl;
 103         struct se_session *se_sess;
 104         u32 orig_nopin_timeout = a->nopin_timeout;
 105
 106         if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) {
 107                 pr_err("Requested NopIn Timeout %u larger than maximum"
 108                         " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX);
 109                 return -EINVAL;
 110         } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) &&
 111                    (nopin_timeout != 0)) {
 112                 pr_err("Requested NopIn Timeout %u smaller than"
 113                         " minimum %u and not 0\n", nopin_timeout,
 114                         NA_NOPIN_TIMEOUT_MIN);
 115                 return -EINVAL;
 116         }
 117
 118         a->nopin_timeout = nopin_timeout;
 119         pr_debug("Set NopIn Timeout to %u for Initiator"
 120                 " Node %s\n", a->nopin_timeout,
 121                 iscsit_na_get_initiatorname(acl));
 122         /*
 123          * Reenable disabled nopin_timeout timer for all iSCSI connections.
 124          */
 125         if (!orig_nopin_timeout) {
 126                 spin_lock_bh(&se_nacl->nacl_sess_lock);
 127                 se_sess = se_nacl->nacl_sess;
 128                 if (se_sess) {
 129                         sess = se_sess->fabric_sess_ptr;
 130
 131                         spin_lock(&sess->conn_lock);
 132                         list_for_each_entry(conn, &sess->sess_conn_list,
 133                                         conn_list) {
 134                                 if (conn->conn_state !=
 135                                                 TARG_CONN_STATE_LOGGED_IN)
 136                                         continue;
 137
 138                                 spin_lock(&conn->nopin_timer_lock);
 139                                 __iscsit_start_nopin_timer(conn);
 140                                 spin_unlock(&conn->nopin_timer_lock);
 141                         }
 142                         spin_unlock(&sess->conn_lock);
 143                 }
 144                 spin_unlock_bh(&se_nacl->nacl_sess_lock);
 145         }
 146
 147         return 0;
 148 }
 149
 150 int iscsit_na_nopin_response_timeout(
 151         struct iscsi_node_acl *acl,
 152         u32 nopin_response_timeout)
 153 {
 154         struct iscsi_node_attrib *a = &acl->node_attrib;
 155
 156         if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) {
 157                 pr_err("Requested NopIn Response Timeout %u larger"
 158                         " than maximum %u\n", nopin_response_timeout,
 159                                 NA_NOPIN_RESPONSE_TIMEOUT_MAX);
 160                 return -EINVAL;
 161         } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) {
 162                 pr_err("Requested NopIn Response Timeout %u smaller"
 163                         " than minimum %u\n", nopin_response_timeout,
 164                                 NA_NOPIN_RESPONSE_TIMEOUT_MIN);
 165                 return -EINVAL;
 166         }
 167
 168         a->nopin_response_timeout = nopin_response_timeout;
 169         pr_debug("Set NopIn Response Timeout to %u for"
 170                 " Initiator Node %s\n", a->nopin_timeout,
 171                 iscsit_na_get_initiatorname(acl));
 172
 173         return 0;
 174 }
 175
 176 int iscsit_na_random_datain_pdu_offsets(
 177         struct iscsi_node_acl *acl,
 178         u32 random_datain_pdu_offsets)
 179 {
 180         struct iscsi_node_attrib *a = &acl->node_attrib;
 181
 182         if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) {
 183                 pr_err("Requested Random DataIN PDU Offsets: %u not"
 184                         " 0 or 1\n", random_datain_pdu_offsets);
 185                 return -EINVAL;
 186         }
 187
 188         a->random_datain_pdu_offsets = random_datain_pdu_offsets;
 189         pr_debug("Set Random DataIN PDU Offsets to %u for"
 190                 " Initiator Node %s\n", a->random_datain_pdu_offsets,
 191                 iscsit_na_get_initiatorname(acl));
 192
 193         return 0;
 194 }
 195
 196 int iscsit_na_random_datain_seq_offsets(
 197         struct iscsi_node_acl *acl,
 198         u32 random_datain_seq_offsets)
 199 {
 200         struct iscsi_node_attrib *a = &acl->node_attrib;
 201
 202         if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) {
 203                 pr_err("Requested Random DataIN Sequence Offsets: %u"
 204                         " not 0 or 1\n", random_datain_seq_offsets);
 205                 return -EINVAL;
 206         }
 207
 208         a->random_datain_seq_offsets = random_datain_seq_offsets;
 209         pr_debug("Set Random DataIN Sequence Offsets to %u for"
 210                 " Initiator Node %s\n", a->random_datain_seq_offsets,
 211                 iscsit_na_get_initiatorname(acl));
 212
 213         return 0;
 214 }
 215
 216 int iscsit_na_random_r2t_offsets(
 217         struct iscsi_node_acl *acl,
 218         u32 random_r2t_offsets)
 219 {
 220         struct iscsi_node_attrib *a = &acl->node_attrib;
 221
 222         if (random_r2t_offsets != 0 && random_r2t_offsets != 1) {
 223                 pr_err("Requested Random R2T Offsets: %u not"
 224                         " 0 or 1\n", random_r2t_offsets);
 225                 return -EINVAL;
 226         }
 227
 228         a->random_r2t_offsets = random_r2t_offsets;
 229         pr_debug("Set Random R2T Offsets to %u for"
 230                 " Initiator Node %s\n", a->random_r2t_offsets,
 231                 iscsit_na_get_initiatorname(acl));
 232
 233         return 0;
 234 }
 235
 236 int iscsit_na_default_erl(
 237         struct iscsi_node_acl *acl,
 238         u32 default_erl)
 239 {
 240         struct iscsi_node_attrib *a = &acl->node_attrib;
 241
 242         if (default_erl != 0 && default_erl != 1 && default_erl != 2) {
 243                 pr_err("Requested default ERL: %u not 0, 1, or 2\n",
 244                                 default_erl);
 245                 return -EINVAL;
 246         }
 247
 248         a->default_erl = default_erl;
 249         pr_debug("Set use ERL0 flag to %u for Initiator"
 250                 " Node %s\n", a->default_erl,
 251                 iscsit_na_get_initiatorname(acl));
 252
 253         return 0;
 254 }