diff options
Diffstat (limited to 'drivers/target/iscsi')
24 files changed, 866 insertions, 499 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 3a179302b904..d70e9119e906 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains main functions related to the iSCSI Target Core Driver. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -63,7 +61,6 @@ spinlock_t sess_idr_lock; struct iscsit_global *iscsit_global; -struct kmem_cache *lio_cmd_cache; struct kmem_cache *lio_qr_cache; struct kmem_cache *lio_dr_cache; struct kmem_cache *lio_ooo_cache; @@ -220,11 +217,6 @@ int iscsit_access_np(struct iscsi_np *np, struct iscsi_portal_group *tpg) spin_unlock_bh(&np->np_thread_lock); return -1; } - if (np->np_login_tpg) { - pr_err("np->np_login_tpg() is not NULL!\n"); - spin_unlock_bh(&np->np_thread_lock); - return -1; - } spin_unlock_bh(&np->np_thread_lock); /* * Determine if the portal group is accepting storage traffic. @@ -239,26 +231,38 @@ int iscsit_access_np(struct iscsi_np *np, struct iscsi_portal_group *tpg) /* * Here we serialize access across the TIQN+TPG Tuple. */ - ret = mutex_lock_interruptible(&tpg->np_login_lock); + ret = down_interruptible(&tpg->np_login_sem); if ((ret != 0) || signal_pending(current)) return -1; - spin_lock_bh(&np->np_thread_lock); - np->np_login_tpg = tpg; - spin_unlock_bh(&np->np_thread_lock); + spin_lock_bh(&tpg->tpg_state_lock); + if (tpg->tpg_state != TPG_STATE_ACTIVE) { + spin_unlock_bh(&tpg->tpg_state_lock); + up(&tpg->np_login_sem); + return -1; + } + spin_unlock_bh(&tpg->tpg_state_lock); return 0; } -int iscsit_deaccess_np(struct iscsi_np *np, struct iscsi_portal_group *tpg) +void iscsit_login_kref_put(struct kref *kref) +{ + struct iscsi_tpg_np *tpg_np = container_of(kref, + struct iscsi_tpg_np, tpg_np_kref); + + complete(&tpg_np->tpg_np_comp); +} + +int iscsit_deaccess_np(struct iscsi_np *np, struct iscsi_portal_group *tpg, + struct iscsi_tpg_np *tpg_np) { struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; - spin_lock_bh(&np->np_thread_lock); - np->np_login_tpg = NULL; - spin_unlock_bh(&np->np_thread_lock); + up(&tpg->np_login_sem); - mutex_unlock(&tpg->np_login_lock); + if (tpg_np) + kref_put(&tpg_np->tpg_np_kref, iscsit_login_kref_put); if (tiqn) iscsit_put_tiqn_for_login(tiqn); @@ -410,20 +414,10 @@ struct iscsi_np *iscsit_add_np( int iscsit_reset_np_thread( struct iscsi_np *np, struct iscsi_tpg_np *tpg_np, - struct iscsi_portal_group *tpg) + struct iscsi_portal_group *tpg, + bool shutdown) { spin_lock_bh(&np->np_thread_lock); - if (tpg && tpg_np) { - /* - * The reset operation need only be performed when the - * passed struct iscsi_portal_group has a login in progress - * to one of the network portals. - */ - if (tpg_np->tpg_np->np_login_tpg != tpg) { - spin_unlock_bh(&np->np_thread_lock); - return 0; - } - } if (np->np_thread_state == ISCSI_NP_THREAD_INACTIVE) { spin_unlock_bh(&np->np_thread_lock); return 0; @@ -438,6 +432,12 @@ int iscsit_reset_np_thread( } spin_unlock_bh(&np->np_thread_lock); + if (tpg_np && shutdown) { + kref_put(&tpg_np->tpg_np_kref, iscsit_login_kref_put); + + wait_for_completion(&tpg_np->tpg_np_comp); + } + return 0; } @@ -497,7 +497,6 @@ static struct iscsit_transport iscsi_target_transport = { .iscsit_setup_np = iscsit_setup_np, .iscsit_accept_np = iscsit_accept_np, .iscsit_free_np = iscsit_free_np, - .iscsit_alloc_cmd = iscsit_alloc_cmd, .iscsit_get_login_rx = iscsit_get_login_rx, .iscsit_put_login_tx = iscsit_put_login_tx, .iscsit_get_dataout = iscsit_build_r2ts_for_cmd, @@ -538,22 +537,13 @@ static int __init iscsi_target_init_module(void) goto ts_out1; } - lio_cmd_cache = kmem_cache_create("lio_cmd_cache", - sizeof(struct iscsi_cmd), __alignof__(struct iscsi_cmd), - 0, NULL); - if (!lio_cmd_cache) { - pr_err("Unable to kmem_cache_create() for" - " lio_cmd_cache\n"); - goto ts_out2; - } - lio_qr_cache = kmem_cache_create("lio_qr_cache", sizeof(struct iscsi_queue_req), __alignof__(struct iscsi_queue_req), 0, NULL); if (!lio_qr_cache) { pr_err("nable to kmem_cache_create() for" " lio_qr_cache\n"); - goto cmd_out; + goto ts_out2; } lio_dr_cache = kmem_cache_create("lio_dr_cache", @@ -597,8 +587,6 @@ dr_out: kmem_cache_destroy(lio_dr_cache); qr_out: kmem_cache_destroy(lio_qr_cache); -cmd_out: - kmem_cache_destroy(lio_cmd_cache); ts_out2: iscsi_deallocate_thread_sets(); ts_out1: @@ -616,7 +604,6 @@ static void __exit iscsi_target_cleanup_module(void) iscsi_thread_set_free(); iscsit_release_discovery_tpg(); iscsit_unregister_transport(&iscsi_target_transport); - kmem_cache_destroy(lio_cmd_cache); kmem_cache_destroy(lio_qr_cache); kmem_cache_destroy(lio_dr_cache); kmem_cache_destroy(lio_ooo_cache); @@ -766,7 +753,8 @@ static void iscsit_unmap_iovec(struct iscsi_cmd *cmd) static void iscsit_ack_from_expstatsn(struct iscsi_conn *conn, u32 exp_statsn) { - struct iscsi_cmd *cmd; + LIST_HEAD(ack_list); + struct iscsi_cmd *cmd, *cmd_p; conn->exp_statsn = exp_statsn; @@ -774,19 +762,23 @@ static void iscsit_ack_from_expstatsn(struct iscsi_conn *conn, u32 exp_statsn) return; spin_lock_bh(&conn->cmd_lock); - list_for_each_entry(cmd, &conn->conn_cmd_list, i_conn_node) { + list_for_each_entry_safe(cmd, cmd_p, &conn->conn_cmd_list, i_conn_node) { spin_lock(&cmd->istate_lock); if ((cmd->i_state == ISTATE_SENT_STATUS) && iscsi_sna_lt(cmd->stat_sn, exp_statsn)) { cmd->i_state = ISTATE_REMOVE; spin_unlock(&cmd->istate_lock); - iscsit_add_cmd_to_immediate_queue(cmd, conn, - cmd->i_state); + list_move_tail(&cmd->i_conn_node, &ack_list); continue; } spin_unlock(&cmd->istate_lock); } spin_unlock_bh(&conn->cmd_lock); + + list_for_each_entry_safe(cmd, cmd_p, &ack_list, i_conn_node) { + list_del(&cmd->i_conn_node); + iscsit_free_cmd(cmd, false); + } } static int iscsit_allocate_iovecs(struct iscsi_cmd *cmd) @@ -813,14 +805,7 @@ int iscsit_setup_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int iscsi_task_attr; int sam_task_attr; - spin_lock_bh(&conn->sess->session_stats_lock); - conn->sess->cmd_pdus++; - if (conn->sess->se_sess->se_node_acl) { - spin_lock(&conn->sess->se_sess->se_node_acl->stats_lock); - conn->sess->se_sess->se_node_acl->num_cmds++; - spin_unlock(&conn->sess->se_sess->se_node_acl->stats_lock); - } - spin_unlock_bh(&conn->sess->session_stats_lock); + atomic_long_inc(&conn->sess->cmd_pdus); hdr = (struct iscsi_scsi_req *) buf; payload_length = ntoh24(hdr->dlength); @@ -1262,20 +1247,12 @@ iscsit_check_dataout_hdr(struct iscsi_conn *conn, unsigned char *buf, int rc; if (!payload_length) { - pr_err("DataOUT payload is ZERO, protocol error.\n"); - return iscsit_add_reject(conn, ISCSI_REASON_PROTOCOL_ERROR, - buf); + pr_warn("DataOUT payload is ZERO, ignoring.\n"); + return 0; } /* iSCSI write */ - spin_lock_bh(&conn->sess->session_stats_lock); - conn->sess->rx_data_octets += payload_length; - if (conn->sess->se_sess->se_node_acl) { - spin_lock(&conn->sess->se_sess->se_node_acl->stats_lock); - conn->sess->se_sess->se_node_acl->write_bytes += payload_length; - spin_unlock(&conn->sess->se_sess->se_node_acl->stats_lock); - } - spin_unlock_bh(&conn->sess->session_stats_lock); + atomic_long_add(payload_length, &conn->sess->rx_data_octets); if (payload_length > conn->conn_ops->MaxXmitDataSegmentLength) { pr_err("DataSegmentLength: %u is greater than" @@ -1494,7 +1471,7 @@ EXPORT_SYMBOL(iscsit_check_dataout_payload); static int iscsit_handle_data_out(struct iscsi_conn *conn, unsigned char *buf) { - struct iscsi_cmd *cmd; + struct iscsi_cmd *cmd = NULL; struct iscsi_data *hdr = (struct iscsi_data *)buf; int rc; bool data_crc_failed = false; @@ -1962,6 +1939,13 @@ iscsit_setup_text_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, (unsigned char *)hdr); } + if (!(hdr->flags & ISCSI_FLAG_CMD_FINAL) || + (hdr->flags & ISCSI_FLAG_TEXT_CONTINUE)) { + pr_err("Multi sequence text commands currently not supported\n"); + return iscsit_reject_cmd(cmd, ISCSI_REASON_CMD_NOT_SUPPORTED, + (unsigned char *)hdr); + } + pr_debug("Got Text Request: ITT: 0x%08x, CmdSN: 0x%08x," " ExpStatSN: 0x%08x, Length: %u\n", hdr->itt, hdr->cmdsn, hdr->exp_statsn, payload_length); @@ -2638,14 +2622,7 @@ static int iscsit_send_datain(struct iscsi_cmd *cmd, struct iscsi_conn *conn) return -1; } - spin_lock_bh(&conn->sess->session_stats_lock); - conn->sess->tx_data_octets += datain.length; - if (conn->sess->se_sess->se_node_acl) { - spin_lock(&conn->sess->se_sess->se_node_acl->stats_lock); - conn->sess->se_sess->se_node_acl->read_bytes += datain.length; - spin_unlock(&conn->sess->se_sess->se_node_acl->stats_lock); - } - spin_unlock_bh(&conn->sess->session_stats_lock); + atomic_long_add(datain.length, &conn->sess->tx_data_octets); /* * Special case for successfully execution w/ both DATAIN * and Sense Data. @@ -3170,9 +3147,7 @@ void iscsit_build_rsp_pdu(struct iscsi_cmd *cmd, struct iscsi_conn *conn, if (inc_stat_sn) cmd->stat_sn = conn->stat_sn++; - spin_lock_bh(&conn->sess->session_stats_lock); - conn->sess->rsp_pdus++; - spin_unlock_bh(&conn->sess->session_stats_lock); + atomic_long_inc(&conn->sess->rsp_pdus); memset(hdr, 0, ISCSI_HDR_LEN); hdr->opcode = ISCSI_OP_SCSI_CMD_RSP; @@ -3382,6 +3357,7 @@ static int iscsit_build_sendtargets_response(struct iscsi_cmd *cmd) struct iscsi_tiqn *tiqn; struct iscsi_tpg_np *tpg_np; int buffer_len, end_of_buf = 0, len = 0, payload_len = 0; + int target_name_printed; unsigned char buf[ISCSI_IQN_LEN+12]; /* iqn + "TargetName=" + \0 */ unsigned char *text_in = cmd->text_in_ptr, *text_ptr = NULL; @@ -3419,19 +3395,23 @@ static int iscsit_build_sendtargets_response(struct iscsi_cmd *cmd) continue; } - len = sprintf(buf, "TargetName=%s", tiqn->tiqn); - len += 1; - - if ((len + payload_len) > buffer_len) { - end_of_buf = 1; - goto eob; - } - memcpy(payload + payload_len, buf, len); - payload_len += len; + target_name_printed = 0; spin_lock(&tiqn->tiqn_tpg_lock); list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { + /* If demo_mode_discovery=0 and generate_node_acls=0 + * (demo mode dislabed) do not return + * TargetName+TargetAddress unless a NodeACL exists. + */ + + if ((tpg->tpg_attrib.generate_node_acls == 0) && + (tpg->tpg_attrib.demo_mode_discovery == 0) && + (!core_tpg_get_initiator_node_acl(&tpg->tpg_se_tpg, + cmd->conn->sess->sess_ops->InitiatorName))) { + continue; + } + spin_lock(&tpg->tpg_state_lock); if ((tpg->tpg_state == TPG_STATE_FREE) || (tpg->tpg_state == TPG_STATE_INACTIVE)) { @@ -3446,13 +3426,27 @@ static int iscsit_build_sendtargets_response(struct iscsi_cmd *cmd) struct iscsi_np *np = tpg_np->tpg_np; bool inaddr_any = iscsit_check_inaddr_any(np); + if (!target_name_printed) { + len = sprintf(buf, "TargetName=%s", + tiqn->tiqn); + len += 1; + + if ((len + payload_len) > buffer_len) { + spin_unlock(&tpg->tpg_np_lock); + spin_unlock(&tiqn->tiqn_tpg_lock); + end_of_buf = 1; + goto eob; + } + memcpy(payload + payload_len, buf, len); + payload_len += len; + target_name_printed = 1; + } + len = sprintf(buf, "TargetAddress=" - "%s%s%s:%hu,%hu", - (np->np_sockaddr.ss_family == AF_INET6) ? - "[" : "", (inaddr_any == false) ? + "%s:%hu,%hu", + (inaddr_any == false) ? np->np_ip : conn->local_ip, - (np->np_sockaddr.ss_family == AF_INET6) ? - "]" : "", (inaddr_any == false) ? + (inaddr_any == false) ? np->np_port : conn->local_port, tpg->tpgt); len += 1; @@ -4102,9 +4096,7 @@ restart: * hit default in the switch below. */ memset(buffer, 0xff, ISCSI_HDR_LEN); - spin_lock_bh(&conn->sess->session_stats_lock); - conn->sess->conn_digest_errors++; - spin_unlock_bh(&conn->sess->session_stats_lock); + atomic_long_inc(&conn->sess->conn_digest_errors); } else { pr_debug("Got HeaderDigest CRC32C" " 0x%08x\n", checksum); @@ -4391,7 +4383,7 @@ int iscsit_close_connection( int iscsit_close_session(struct iscsi_session *sess) { - struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess); + struct iscsi_portal_group *tpg = sess->tpg; struct se_portal_group *se_tpg = &tpg->tpg_se_tpg; if (atomic_read(&sess->nconn)) { diff --git a/drivers/target/iscsi/iscsi_target.h b/drivers/target/iscsi/iscsi_target.h index 2c437cb8ca00..e936d56fb523 100644 --- a/drivers/target/iscsi/iscsi_target.h +++ b/drivers/target/iscsi/iscsi_target.h @@ -7,13 +7,15 @@ extern void iscsit_put_tiqn_for_login(struct iscsi_tiqn *); extern struct iscsi_tiqn *iscsit_add_tiqn(unsigned char *); extern void iscsit_del_tiqn(struct iscsi_tiqn *); extern int iscsit_access_np(struct iscsi_np *, struct iscsi_portal_group *); -extern int iscsit_deaccess_np(struct iscsi_np *, struct iscsi_portal_group *); +extern void iscsit_login_kref_put(struct kref *); +extern int iscsit_deaccess_np(struct iscsi_np *, struct iscsi_portal_group *, + struct iscsi_tpg_np *); extern bool iscsit_check_np_match(struct __kernel_sockaddr_storage *, struct iscsi_np *, int); extern struct iscsi_np *iscsit_add_np(struct __kernel_sockaddr_storage *, char *, int); extern int iscsit_reset_np_thread(struct iscsi_np *, struct iscsi_tpg_np *, - struct iscsi_portal_group *); + struct iscsi_portal_group *, bool); extern int iscsit_del_np(struct iscsi_np *); extern int iscsit_reject_cmd(struct iscsi_cmd *cmd, u8, unsigned char *); extern void iscsit_set_unsoliticed_dataout(struct iscsi_cmd *); @@ -37,7 +39,6 @@ extern struct target_fabric_configfs *lio_target_fabric_configfs; extern struct kmem_cache *lio_dr_cache; extern struct kmem_cache *lio_ooo_cache; -extern struct kmem_cache *lio_cmd_cache; extern struct kmem_cache *lio_qr_cache; extern struct kmem_cache *lio_r2t_cache; diff --git a/drivers/target/iscsi/iscsi_target_auth.c b/drivers/target/iscsi/iscsi_target_auth.c index cee17543278c..de77d9aa22c6 100644 --- a/drivers/target/iscsi/iscsi_target_auth.c +++ b/drivers/target/iscsi/iscsi_target_auth.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file houses the main functions for the iSCSI CHAP support * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -113,7 +111,7 @@ static struct iscsi_chap *chap_server_open( /* * Set Identifier. */ - chap->id = ISCSI_TPG_C(conn)->tpg_chap_id++; + chap->id = conn->tpg->tpg_chap_id++; *aic_len += sprintf(aic_str + *aic_len, "CHAP_I=%d", chap->id); *aic_len += 1; pr_debug("[server] Sending CHAP_I=%d\n", chap->id); @@ -148,6 +146,7 @@ static int chap_server_compute_md5( unsigned char client_digest[MD5_SIGNATURE_SIZE]; unsigned char server_digest[MD5_SIGNATURE_SIZE]; unsigned char chap_n[MAX_CHAP_N_SIZE], chap_r[MAX_RESPONSE_LENGTH]; + size_t compare_len; struct iscsi_chap *chap = conn->auth_protocol; struct crypto_hash *tfm; struct hash_desc desc; @@ -186,7 +185,9 @@ static int chap_server_compute_md5( goto out; } - if (memcmp(chap_n, auth->userid, strlen(auth->userid)) != 0) { + /* Include the terminating NULL in the compare */ + compare_len = strlen(auth->userid) + 1; + if (strncmp(chap_n, auth->userid, compare_len) != 0) { pr_err("CHAP_N values do not match!\n"); goto out; } diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c index bbfd28893164..e3318edb233d 100644 --- a/drivers/target/iscsi/iscsi_target_configfs.c +++ b/drivers/target/iscsi/iscsi_target_configfs.c @@ -2,9 +2,7 @@ * This file contains the configfs implementation for iSCSI Target mode * from the LIO-Target Project. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -265,9 +263,9 @@ static struct se_tpg_np *lio_target_call_addnptotpg( *port_str = '\0'; /* Terminate string for IP */ port_str++; /* Skip over ":" */ - ret = strict_strtoul(port_str, 0, &port); + ret = kstrtoul(port_str, 0, &port); if (ret < 0) { - pr_err("strict_strtoul() failed for port_str: %d\n", ret); + pr_err("kstrtoul() failed for port_str: %d\n", ret); return ERR_PTR(ret); } sock_in6 = (struct sockaddr_in6 *)&sockaddr; @@ -290,9 +288,9 @@ static struct se_tpg_np *lio_target_call_addnptotpg( *port_str = '\0'; /* Terminate string for IP */ port_str++; /* Skip over ":" */ - ret = strict_strtoul(port_str, 0, &port); + ret = kstrtoul(port_str, 0, &port); if (ret < 0) { - pr_err("strict_strtoul() failed for port_str: %d\n", ret); + pr_err("kstrtoul() failed for port_str: %d\n", ret); return ERR_PTR(ret); } sock_in = (struct sockaddr_in *)&sockaddr; @@ -374,7 +372,7 @@ static ssize_t iscsi_nacl_attrib_show_##name( \ struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \ se_node_acl); \ \ - return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name); \ + return sprintf(page, "%u\n", nacl->node_attrib.name); \ } \ \ static ssize_t iscsi_nacl_attrib_store_##name( \ @@ -899,7 +897,7 @@ static struct se_node_acl *lio_target_make_nodeacl( if (!se_nacl_new) return ERR_PTR(-ENOMEM); - cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth; + cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth; /* * se_nacl_new may be released by core_tpg_add_initiator_node_acl() * when converting a NdoeACL from demo mode -> explict @@ -922,9 +920,9 @@ static struct se_node_acl *lio_target_make_nodeacl( return ERR_PTR(-ENOMEM); } - stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group; + stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group; stats_cg->default_groups[1] = NULL; - config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group, + config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group, "iscsi_sess_stats", &iscsi_stat_sess_cit); return se_nacl; @@ -969,7 +967,7 @@ static ssize_t iscsi_tpg_attrib_show_##name( \ if (iscsit_get_tpg(tpg) < 0) \ return -EINVAL; \ \ - rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name); \ + rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \ iscsit_put_tpg(tpg); \ return rb; \ } \ @@ -1043,6 +1041,16 @@ TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); */ DEF_TPG_ATTRIB(prod_mode_write_protect); TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); +/* + * Define iscsi_tpg_attrib_s_demo_mode_discovery, + */ +DEF_TPG_ATTRIB(demo_mode_discovery); +TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR); +/* + * Define iscsi_tpg_attrib_s_default_erl + */ +DEF_TPG_ATTRIB(default_erl); +TPG_ATTR(default_erl, S_IRUGO | S_IWUSR); static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { &iscsi_tpg_attrib_authentication.attr, @@ -1053,6 +1061,8 @@ static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { &iscsi_tpg_attrib_cache_dynamic_acls.attr, &iscsi_tpg_attrib_demo_mode_write_protect.attr, &iscsi_tpg_attrib_prod_mode_write_protect.attr, + &iscsi_tpg_attrib_demo_mode_discovery.attr, + &iscsi_tpg_attrib_default_erl.attr, NULL, }; @@ -1481,7 +1491,7 @@ static ssize_t lio_target_wwn_show_attr_lio_version( struct target_fabric_configfs *tf, char *page) { - return sprintf(page, "RisingTide Systems Linux-iSCSI Target "ISCSIT_VERSION"\n"); + return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n"); } TF_WWN_ATTR_RO(lio_target, lio_version); @@ -1516,21 +1526,21 @@ static struct se_wwn *lio_target_call_coreaddtiqn( return ERR_PTR(-ENOMEM); } - stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group; - stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group; - stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group; - stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group; - stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group; + stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group; + stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group; + stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group; + stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group; + stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group; stats_cg->default_groups[5] = NULL; - config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group, + config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group, "iscsi_instance", &iscsi_stat_instance_cit); - config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group, + config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, "iscsi_sess_err", &iscsi_stat_sess_err_cit); - config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group, + config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit); - config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group, + config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, "iscsi_login_stats", &iscsi_stat_login_cit); - config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group, + config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, "iscsi_logout_stats", &iscsi_stat_logout_cit); pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); @@ -1786,6 +1796,11 @@ static int lio_queue_status(struct se_cmd *se_cmd) struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); cmd->i_state = ISTATE_SEND_STATUS; + + if (cmd->se_cmd.scsi_status || cmd->sense_reason) { + iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); + return 0; + } cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd); return 0; @@ -1817,21 +1832,21 @@ static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg) { struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; - return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth; + return tpg->tpg_attrib.default_cmdsn_depth; } static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg) { struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; - return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls; + return tpg->tpg_attrib.generate_node_acls; } static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg) { struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; - return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls; + return tpg->tpg_attrib.cache_dynamic_acls; } static int lio_tpg_check_demo_mode_write_protect( @@ -1839,7 +1854,7 @@ static int lio_tpg_check_demo_mode_write_protect( { struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; - return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect; + return tpg->tpg_attrib.demo_mode_write_protect; } static int lio_tpg_check_prod_mode_write_protect( @@ -1847,7 +1862,7 @@ static int lio_tpg_check_prod_mode_write_protect( { struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; - return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect; + return tpg->tpg_attrib.prod_mode_write_protect; } static void lio_tpg_release_fabric_acl( @@ -1910,9 +1925,12 @@ static void lio_set_default_node_attributes(struct se_node_acl *se_acl) { struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl, se_node_acl); + struct se_portal_group *se_tpg = se_acl->se_tpg; + struct iscsi_portal_group *tpg = container_of(se_tpg, + struct iscsi_portal_group, tpg_se_tpg); - ISCSI_NODE_ATTRIB(acl)->nacl = acl; - iscsit_set_default_node_attribues(acl); + acl->node_attrib.nacl = acl; + iscsit_set_default_node_attribues(acl, tpg); } static int lio_check_stop_free(struct se_cmd *se_cmd) @@ -1925,7 +1943,7 @@ static void lio_release_cmd(struct se_cmd *se_cmd) struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd); - cmd->release_cmd(cmd); + iscsit_release_cmd(cmd); } /* End functions for target_core_fabric_ops */ @@ -1997,17 +2015,17 @@ int iscsi_target_register_configfs(void) * Setup default attribute lists for various fabric->tf_cit_tmpl * sturct config_item_type's */ - TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs; - TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs; - TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs; - TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs; - TF_CIT_TMPL(fabric)->tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs; - TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs; - TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs; - TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs; - TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs; - TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs; - TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs; + fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs; + fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs; + fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs; + fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs; + fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs; + fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs; + fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs; + fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs; + fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs; + fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs; + fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs; ret = target_fabric_configfs_register(fabric); if (ret < 0) { diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h index 4f77a78edef9..48f7b3bf4e8c 100644 --- a/drivers/target/iscsi/iscsi_target_core.h +++ b/drivers/target/iscsi/iscsi_target_core.h @@ -9,7 +9,7 @@ #include <scsi/iscsi_proto.h> #include <target/target_core_base.h> -#define ISCSIT_VERSION "v4.1.0-rc2" +#define ISCSIT_VERSION "v4.1.0" #define ISCSI_MAX_DATASN_MISSING_COUNT 16 #define ISCSI_TX_THREAD_TCP_TIMEOUT 2 #define ISCSI_RX_THREAD_TCP_TIMEOUT 2 @@ -17,6 +17,9 @@ #define SECONDS_FOR_ASYNC_TEXT 10 #define SECONDS_FOR_LOGOUT_COMP 15 #define WHITE_SPACE " \t\v\f\n\r" +#define ISCSIT_MIN_TAGS 16 +#define ISCSIT_EXTRA_TAGS 8 +#define ISCSIT_TCP_BACKLOG 256 /* struct iscsi_node_attrib sanity values */ #define NA_DATAOUT_TIMEOUT 3 @@ -34,9 +37,6 @@ #define NA_RANDOM_DATAIN_PDU_OFFSETS 0 #define NA_RANDOM_DATAIN_SEQ_OFFSETS 0 #define NA_RANDOM_R2T_OFFSETS 0 -#define NA_DEFAULT_ERL 0 -#define NA_DEFAULT_ERL_MAX 2 -#define NA_DEFAULT_ERL_MIN 0 /* struct iscsi_tpg_attrib sanity values */ #define TA_AUTHENTICATION 1 @@ -47,7 +47,7 @@ #define TA_NETIF_TIMEOUT_MAX 15 #define TA_NETIF_TIMEOUT_MIN 2 #define TA_GENERATE_NODE_ACLS 0 -#define TA_DEFAULT_CMDSN_DEPTH 16 +#define TA_DEFAULT_CMDSN_DEPTH 64 #define TA_DEFAULT_CMDSN_DEPTH_MAX 512 #define TA_DEFAULT_CMDSN_DEPTH_MIN 1 #define TA_CACHE_DYNAMIC_ACLS 0 @@ -55,6 +55,8 @@ #define TA_DEMO_MODE_WRITE_PROTECT 1 /* Disabled by default in production mode w/ explict ACLs */ #define TA_PROD_MODE_WRITE_PROTECT 0 +#define TA_DEMO_MODE_DISCOVERY 1 +#define TA_DEFAULT_ERL 0 #define TA_CACHE_CORE_NPS 0 @@ -189,6 +191,7 @@ enum recover_cmdsn_ret_table { CMDSN_NORMAL_OPERATION = 0, CMDSN_LOWER_THAN_EXP = 1, CMDSN_HIGHER_THAN_EXP = 2, + CMDSN_MAXCMDSN_OVERRUN = 3, }; /* Used for iscsi_handle_immediate_data() return values */ @@ -489,7 +492,6 @@ struct iscsi_cmd { u32 first_data_sg_off; u32 kmapped_nents; sense_reason_t sense_reason; - void (*release_cmd)(struct iscsi_cmd *); } ____cacheline_aligned; struct iscsi_tmr_req { @@ -554,9 +556,19 @@ struct iscsi_conn { struct completion rx_half_close_comp; /* socket used by this connection */ struct socket *sock; + void (*orig_data_ready)(struct sock *, int); + void (*orig_state_change)(struct sock *); +#define LOGIN_FLAGS_READ_ACTIVE 1 +#define LOGIN_FLAGS_CLOSED 2 +#define LOGIN_FLAGS_READY 4 + unsigned long login_flags; + struct delayed_work login_work; + struct delayed_work login_cleanup_work; + struct iscsi_login *login; struct timer_list nopin_timer; struct timer_list nopin_response_timer; struct timer_list transport_timer; + struct task_struct *login_kworker; /* Spinlock used for add/deleting cmd's from conn_cmd_list */ spinlock_t cmd_lock; spinlock_t conn_usage_lock; @@ -584,6 +596,7 @@ struct iscsi_conn { void *context; struct iscsi_login_thread_s *login_thread; struct iscsi_portal_group *tpg; + struct iscsi_tpg_np *tpg_np; /* Pointer to parent session */ struct iscsi_session *sess; /* Pointer to thread_set in use for this conn's threads */ @@ -637,14 +650,13 @@ struct iscsi_session { /* Used for session reference counting */ int session_usage_count; int session_waiting_on_uc; - u32 cmd_pdus; - u32 rsp_pdus; - u64 tx_data_octets; - u64 rx_data_octets; - u32 conn_digest_errors; - u32 conn_timeout_errors; + atomic_long_t cmd_pdus; + atomic_long_t rsp_pdus; + atomic_long_t tx_data_octets; + atomic_long_t rx_data_octets; + atomic_long_t conn_digest_errors; + atomic_long_t conn_timeout_errors; u64 creation_time; - spinlock_t session_stats_lock; /* Number of active connections */ atomic_t nconn; atomic_t session_continuation; @@ -682,6 +694,7 @@ struct iscsi_login { u8 version_max; u8 login_complete; u8 login_failed; + bool zero_tsih; char isid[6]; u32 cmd_sn; itt_t init_task_tag; @@ -694,6 +707,7 @@ struct iscsi_login { char *req_buf; char *rsp_buf; struct iscsi_conn *conn; + struct iscsi_np *np; } ____cacheline_aligned; struct iscsi_node_attrib { @@ -740,11 +754,6 @@ struct iscsi_node_acl { struct se_node_acl se_node_acl; }; -#define NODE_STAT_GRPS(nacl) (&(nacl)->node_stat_grps) - -#define ISCSI_NODE_ATTRIB(t) (&(t)->node_attrib) -#define ISCSI_NODE_AUTH(t) (&(t)->node_auth) - struct iscsi_tpg_attrib { u32 authentication; u32 login_timeout; @@ -754,6 +763,8 @@ struct iscsi_tpg_attrib { u32 default_cmdsn_depth; u32 demo_mode_write_protect; u32 prod_mode_write_protect; + u32 demo_mode_discovery; + u32 default_erl; struct iscsi_portal_group *tpg; }; @@ -773,7 +784,6 @@ struct iscsi_np { struct __kernel_sockaddr_storage np_sockaddr; struct task_struct *np_thread; struct timer_list np_login_timer; - struct iscsi_portal_group *np_login_tpg; void *np_context; struct iscsit_transport *np_transport; struct list_head np_list; @@ -788,6 +798,8 @@ struct iscsi_tpg_np { struct list_head tpg_np_parent_list; struct se_tpg_np se_tpg_np; spinlock_t tpg_np_parent_lock; + struct completion tpg_np_comp; + struct kref tpg_np_kref; }; struct iscsi_portal_group { @@ -809,7 +821,7 @@ struct iscsi_portal_group { spinlock_t tpg_state_lock; struct se_portal_group tpg_se_tpg; struct mutex tpg_access_lock; - struct mutex np_login_lock; + struct semaphore np_login_sem; struct iscsi_tpg_attrib tpg_attrib; struct iscsi_node_auth tpg_demo_auth; /* Pointer to default list of iSCSI parameters for TPG */ @@ -819,12 +831,6 @@ struct iscsi_portal_group { struct list_head tpg_list; } ____cacheline_aligned; -#define ISCSI_TPG_C(c) ((struct iscsi_portal_group *)(c)->tpg) -#define ISCSI_TPG_LUN(c, l) ((iscsi_tpg_list_t *)(c)->tpg->tpg_lun_list_t[l]) -#define ISCSI_TPG_S(s) ((struct iscsi_portal_group *)(s)->tpg) -#define ISCSI_TPG_ATTRIB(t) (&(t)->tpg_attrib) -#define SE_TPG(tpg) (&(tpg)->tpg_se_tpg) - struct iscsi_wwn_stat_grps { struct config_group iscsi_stat_group; struct config_group iscsi_instance_group; @@ -855,8 +861,6 @@ struct iscsi_tiqn { struct iscsi_logout_stats logout_stats; } ____cacheline_aligned; -#define WWN_STAT_GRPS(tiqn) (&(tiqn)->tiqn_stat_grps) - struct iscsit_global { /* In core shutdown */ u32 in_shutdown; diff --git a/drivers/target/iscsi/iscsi_target_datain_values.c b/drivers/target/iscsi/iscsi_target_datain_values.c index 848fee768948..e93d5a7a3f81 100644 --- a/drivers/target/iscsi/iscsi_target_datain_values.c +++ b/drivers/target/iscsi/iscsi_target_datain_values.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains the iSCSI Target DataIN value generation functions. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * diff --git a/drivers/target/iscsi/iscsi_target_device.c b/drivers/target/iscsi/iscsi_target_device.c index 1b74033510a0..7087c736daa5 100644 --- a/drivers/target/iscsi/iscsi_target_device.c +++ b/drivers/target/iscsi/iscsi_target_device.c @@ -2,9 +2,7 @@ * This file contains the iSCSI Virtual Device and Disk Transport * agnostic related functions. * - \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -60,11 +58,7 @@ void iscsit_increment_maxcmdsn(struct iscsi_cmd *cmd, struct iscsi_session *sess cmd->maxcmdsn_inc = 1; - if (!mutex_trylock(&sess->cmdsn_mutex)) { - sess->max_cmd_sn += 1; - pr_debug("Updated MaxCmdSN to 0x%08x\n", sess->max_cmd_sn); - return; - } + mutex_lock(&sess->cmdsn_mutex); sess->max_cmd_sn += 1; pr_debug("Updated MaxCmdSN to 0x%08x\n", sess->max_cmd_sn); mutex_unlock(&sess->cmdsn_mutex); diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c index 08bd87833321..0d1e6ee3e992 100644 --- a/drivers/target/iscsi/iscsi_target_erl0.c +++ b/drivers/target/iscsi/iscsi_target_erl0.c @@ -2,9 +2,7 @@ * This file contains error recovery level zero functions used by * the iSCSI Target driver. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -759,7 +757,7 @@ int iscsit_check_post_dataout( static void iscsit_handle_time2retain_timeout(unsigned long data) { struct iscsi_session *sess = (struct iscsi_session *) data; - struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess); + struct iscsi_portal_group *tpg = sess->tpg; struct se_portal_group *se_tpg = &tpg->tpg_se_tpg; spin_lock_bh(&se_tpg->session_lock); @@ -787,7 +785,7 @@ static void iscsit_handle_time2retain_timeout(unsigned long data) tiqn->sess_err_stats.last_sess_failure_type = ISCSI_SESS_ERR_CXN_TIMEOUT; tiqn->sess_err_stats.cxn_timeout_errors++; - sess->conn_timeout_errors++; + atomic_long_inc(&sess->conn_timeout_errors); spin_unlock(&tiqn->sess_err_stats.lock); } } @@ -803,9 +801,9 @@ void iscsit_start_time2retain_handler(struct iscsi_session *sess) * Only start Time2Retain timer when the associated TPG is still in * an ACTIVE (eg: not disabled or shutdown) state. */ - spin_lock(&ISCSI_TPG_S(sess)->tpg_state_lock); - tpg_active = (ISCSI_TPG_S(sess)->tpg_state == TPG_STATE_ACTIVE); - spin_unlock(&ISCSI_TPG_S(sess)->tpg_state_lock); + spin_lock(&sess->tpg->tpg_state_lock); + tpg_active = (sess->tpg->tpg_state == TPG_STATE_ACTIVE); + spin_unlock(&sess->tpg->tpg_state_lock); if (!tpg_active) return; @@ -831,7 +829,7 @@ void iscsit_start_time2retain_handler(struct iscsi_session *sess) */ int iscsit_stop_time2retain_timer(struct iscsi_session *sess) { - struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess); + struct iscsi_portal_group *tpg = sess->tpg; struct se_portal_group *se_tpg = &tpg->tpg_se_tpg; if (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED) diff --git a/drivers/target/iscsi/iscsi_target_erl1.c b/drivers/target/iscsi/iscsi_target_erl1.c index 586c268679a4..e048d6439f4a 100644 --- a/drivers/target/iscsi/iscsi_target_erl1.c +++ b/drivers/target/iscsi/iscsi_target_erl1.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains error recovery level one used by the iSCSI Target driver. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * diff --git a/drivers/target/iscsi/iscsi_target_erl2.c b/drivers/target/iscsi/iscsi_target_erl2.c index 45a5afd5ea13..33be1fb1df32 100644 --- a/drivers/target/iscsi/iscsi_target_erl2.c +++ b/drivers/target/iscsi/iscsi_target_erl2.c @@ -2,9 +2,7 @@ * This file contains error recovery level two functions used by * the iSCSI Target driver. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index bc788c52b6cc..4eb93b2b6473 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains the login functions used by the iSCSI Target driver. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -50,6 +48,7 @@ static struct iscsi_login *iscsi_login_init_conn(struct iscsi_conn *conn) pr_err("Unable to allocate memory for struct iscsi_login.\n"); return NULL; } + conn->login = login; login->conn = conn; login->first_request = 1; @@ -306,7 +305,6 @@ static int iscsi_login_zero_tsih_s1( } sess->creation_time = get_jiffies_64(); - spin_lock_init(&sess->session_stats_lock); /* * The FFP CmdSN window values will be allocated from the TPG's * Initiator Node's ACL once the login has been successfully completed. @@ -348,15 +346,15 @@ static int iscsi_login_zero_tsih_s2( * Assign a new TPG Session Handle. Note this is protected with * struct iscsi_portal_group->np_login_sem from iscsit_access_np(). */ - sess->tsih = ++ISCSI_TPG_S(sess)->ntsih; + sess->tsih = ++sess->tpg->ntsih; if (!sess->tsih) - sess->tsih = ++ISCSI_TPG_S(sess)->ntsih; + sess->tsih = ++sess->tpg->ntsih; /* * Create the default params from user defined values.. */ if (iscsi_copy_param_list(&conn->param_list, - ISCSI_TPG_C(conn)->param_list, 1) < 0) { + conn->tpg->param_list, 1) < 0) { iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR, ISCSI_LOGIN_STATUS_NO_RESOURCES); return -1; @@ -381,7 +379,7 @@ static int iscsi_login_zero_tsih_s2( * In our case, we have already located the struct iscsi_tiqn at this point. */ memset(buf, 0, 32); - sprintf(buf, "TargetPortalGroupTag=%hu", ISCSI_TPG_S(sess)->tpgt); + sprintf(buf, "TargetPortalGroupTag=%hu", sess->tpg->tpgt); if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) { iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR, ISCSI_LOGIN_STATUS_NO_RESOURCES); @@ -428,7 +426,7 @@ static int iscsi_login_zero_tsih_s2( ISCSI_LOGIN_STATUS_NO_RESOURCES); return -1; } - rc = strict_strtoul(param->value, 0, &mrdsl); + rc = kstrtoul(param->value, 0, &mrdsl); if (rc < 0) { iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR, ISCSI_LOGIN_STATUS_NO_RESOURCES); @@ -576,7 +574,7 @@ static int iscsi_login_non_zero_tsih_s2( iscsi_login_set_conn_values(sess, conn, pdu->cid); if (iscsi_copy_param_list(&conn->param_list, - ISCSI_TPG_C(conn)->param_list, 0) < 0) { + conn->tpg->param_list, 0) < 0) { iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR, ISCSI_LOGIN_STATUS_NO_RESOURCES); return -1; @@ -594,7 +592,7 @@ static int iscsi_login_non_zero_tsih_s2( * In our case, we have already located the struct iscsi_tiqn at this point. */ memset(buf, 0, 32); - sprintf(buf, "TargetPortalGroupTag=%hu", ISCSI_TPG_S(sess)->tpgt); + sprintf(buf, "TargetPortalGroupTag=%hu", sess->tpg->tpgt); if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) { iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR, ISCSI_LOGIN_STATUS_NO_RESOURCES); @@ -684,7 +682,7 @@ static void iscsi_post_login_start_timers(struct iscsi_conn *conn) iscsit_start_nopin_timer(conn); } -static int iscsi_post_login_handler( +int iscsi_post_login_handler( struct iscsi_np *np, struct iscsi_conn *conn, u8 zero_tsih) @@ -692,7 +690,7 @@ static int iscsi_post_login_handler( int stop_timer = 0; struct iscsi_session *sess = conn->sess; struct se_session *se_sess = sess->se_sess; - struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess); + struct iscsi_portal_group *tpg = sess->tpg; struct se_portal_group *se_tpg = &tpg->tpg_se_tpg; struct iscsi_thread_set *ts; @@ -872,7 +870,7 @@ int iscsit_setup_np( struct __kernel_sockaddr_storage *sockaddr) { struct socket *sock = NULL; - int backlog = 5, ret, opt = 0, len; + int backlog = ISCSIT_TCP_BACKLOG, ret, opt = 0, len; switch (np->np_network_transport) { case ISCSI_TCP: @@ -1007,16 +1005,24 @@ int iscsit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn) rc = conn->sock->ops->getname(conn->sock, (struct sockaddr *)&sock_in6, &err, 1); if (!rc) { - snprintf(conn->login_ip, sizeof(conn->login_ip), "%pI6c", - &sock_in6.sin6_addr.in6_u); + if (!ipv6_addr_v4mapped(&sock_in6.sin6_addr)) + snprintf(conn->login_ip, sizeof(conn->login_ip), "[%pI6c]", + &sock_in6.sin6_addr.in6_u); + else + snprintf(conn->login_ip, sizeof(conn->login_ip), "%pI4", + &sock_in6.sin6_addr.s6_addr32[3]); conn->login_port = ntohs(sock_in6.sin6_port); } rc = conn->sock->ops->getname(conn->sock, (struct sockaddr *)&sock_in6, &err, 0); if (!rc) { - snprintf(conn->local_ip, sizeof(conn->local_ip), "%pI6c", - &sock_in6.sin6_addr.in6_u); + if (!ipv6_addr_v4mapped(&sock_in6.sin6_addr)) + snprintf(conn->local_ip, sizeof(conn->local_ip), "[%pI6c]", + &sock_in6.sin6_addr.in6_u); + else + snprintf(conn->local_ip, sizeof(conn->local_ip), "%pI4", + &sock_in6.sin6_addr.s6_addr32[3]); conn->local_port = ntohs(sock_in6.sin6_port); } } else { @@ -1116,6 +1122,77 @@ iscsit_conn_set_transport(struct iscsi_conn *conn, struct iscsit_transport *t) return 0; } +void iscsi_target_login_sess_out(struct iscsi_conn *conn, + struct iscsi_np *np, bool zero_tsih, bool new_sess) +{ + if (new_sess == false) + goto old_sess_out; + + pr_err("iSCSI Login negotiation failed.\n"); + iscsit_collect_login_stats(conn, ISCSI_STATUS_CLS_INITIATOR_ERR, + ISCSI_LOGIN_STATUS_INIT_ERR); + if (!zero_tsih || !conn->sess) + goto old_sess_out; + if (conn->sess->se_sess) + transport_free_session(conn->sess->se_sess); + if (conn->sess->session_index != 0) { + spin_lock_bh(&sess_idr_lock); + idr_remove(&sess_idr, conn->sess->session_index); + spin_unlock_bh(&sess_idr_lock); + } + kfree(conn->sess->sess_ops); + kfree(conn->sess); + +old_sess_out: + iscsi_stop_login_thread_timer(np); + /* + * If login negotiation fails check if the Time2Retain timer + * needs to be restarted. + */ + if (!zero_tsih && conn->sess) { + spin_lock_bh(&conn->sess->conn_lock); + if (conn->sess->session_state == TARG_SESS_STATE_FAILED) { + struct se_portal_group *se_tpg = + &conn->tpg->tpg_se_tpg; + + atomic_set(&conn->sess->session_continuation, 0); + spin_unlock_bh(&conn->sess->conn_lock); + spin_lock_bh(&se_tpg->session_lock); + iscsit_start_time2retain_handler(conn->sess); + spin_unlock_bh(&se_tpg->session_lock); + } else + spin_unlock_bh(&conn->sess->conn_lock); + iscsit_dec_session_usage_count(conn->sess); + } + + if (!IS_ERR(conn->conn_rx_hash.tfm)) + crypto_free_hash(conn->conn_rx_hash.tfm); + if (!IS_ERR(conn->conn_tx_hash.tfm)) + crypto_free_hash(conn->conn_tx_hash.tfm); + + if (conn->conn_cpumask) + free_cpumask_var(conn->conn_cpumask); + + kfree(conn->conn_ops); + + if (conn->param_list) { + iscsi_release_param_list(conn->param_list); + conn->param_list = NULL; + } + iscsi_target_nego_release(conn); + + if (conn->sock) { + sock_release(conn->sock); + conn->sock = NULL; + } + + if (conn->conn_transport->iscsit_free_conn) + conn->conn_transport->iscsit_free_conn(conn); + + iscsit_put_transport(conn->conn_transport); + kfree(conn); +} + static int __iscsi_target_login_thread(struct iscsi_np *np) { u8 *buffer, zero_tsih = 0; @@ -1124,6 +1201,8 @@ static int __iscsi_target_login_thread(struct iscsi_np *np) struct iscsi_login *login; struct iscsi_portal_group *tpg = NULL; struct iscsi_login_req *pdu; + struct iscsi_tpg_np *tpg_np; + bool new_sess = false; flush_signals(current); @@ -1264,6 +1343,7 @@ static int __iscsi_target_login_thread(struct iscsi_np *np) tpg = conn->tpg; goto new_sess_out; } + login->zero_tsih = zero_tsih; tpg = conn->tpg; if (!tpg) { @@ -1279,7 +1359,8 @@ static int __iscsi_target_login_thread(struct iscsi_np *np) goto old_sess_out; } - if (iscsi_target_start_negotiation(login, conn) < 0) + ret = iscsi_target_start_negotiation(login, conn); + if (ret < 0) goto new_sess_out; if (!conn->sess) { @@ -1292,84 +1373,32 @@ static int __iscsi_target_login_thread(struct iscsi_np *np) if (signal_pending(current)) goto new_sess_out; - ret = iscsi_post_login_handler(np, conn, zero_tsih); + if (ret == 1) { + tpg_np = conn->tpg_np; - if (ret < 0) - goto new_sess_out; + ret = iscsi_post_login_handler(np, conn, zero_tsih); + if (ret < 0) + goto new_sess_out; + + iscsit_deaccess_np(np, tpg, tpg_np); + } - iscsit_deaccess_np(np, tpg); tpg = NULL; + tpg_np = NULL; /* Get another socket */ return 1; new_sess_out: - pr_err("iSCSI Login negotiation failed.\n"); - iscsit_collect_login_stats(conn, ISCSI_STATUS_CLS_INITIATOR_ERR, - ISCSI_LOGIN_STATUS_INIT_ERR); - if (!zero_tsih || !conn->sess) - goto old_sess_out; - if (conn->sess->se_sess) - transport_free_session(conn->sess->se_sess); - if (conn->sess->session_index != 0) { - spin_lock_bh(&sess_idr_lock); - idr_remove(&sess_idr, conn->sess->session_index); - spin_unlock_bh(&sess_idr_lock); - } - kfree(conn->sess->sess_ops); - kfree(conn->sess); + new_sess = true; old_sess_out: - iscsi_stop_login_thread_timer(np); - /* - * If login negotiation fails check if the Time2Retain timer - * needs to be restarted. - */ - if (!zero_tsih && conn->sess) { - spin_lock_bh(&conn->sess->conn_lock); - if (conn->sess->session_state == TARG_SESS_STATE_FAILED) { - struct se_portal_group *se_tpg = - &ISCSI_TPG_C(conn)->tpg_se_tpg; - - atomic_set(&conn->sess->session_continuation, 0); - spin_unlock_bh(&conn->sess->conn_lock); - spin_lock_bh(&se_tpg->session_lock); - iscsit_start_time2retain_handler(conn->sess); - spin_unlock_bh(&se_tpg->session_lock); - } else - spin_unlock_bh(&conn->sess->conn_lock); - iscsit_dec_session_usage_count(conn->sess); - } - - if (!IS_ERR(conn->conn_rx_hash.tfm)) - crypto_free_hash(conn->conn_rx_hash.tfm); - if (!IS_ERR(conn->conn_tx_hash.tfm)) - crypto_free_hash(conn->conn_tx_hash.tfm); - - if (conn->conn_cpumask) - free_cpumask_var(conn->conn_cpumask); - - kfree(conn->conn_ops); - - if (conn->param_list) { - iscsi_release_param_list(conn->param_list); - conn->param_list = NULL; - } - iscsi_target_nego_release(conn); - - if (conn->sock) { - sock_release(conn->sock); - conn->sock = NULL; - } - - if (conn->conn_transport->iscsit_free_conn) - conn->conn_transport->iscsit_free_conn(conn); - - iscsit_put_transport(conn->conn_transport); - - kfree(conn); + tpg_np = conn->tpg_np; + iscsi_target_login_sess_out(conn, np, zero_tsih, new_sess); + new_sess = false; if (tpg) { - iscsit_deaccess_np(np, tpg); + iscsit_deaccess_np(np, tpg, tpg_np); tpg = NULL; + tpg_np = NULL; } out: diff --git a/drivers/target/iscsi/iscsi_target_login.h b/drivers/target/iscsi/iscsi_target_login.h index 63efd2878451..29d098324b7f 100644 --- a/drivers/target/iscsi/iscsi_target_login.h +++ b/drivers/target/iscsi/iscsi_target_login.h @@ -12,6 +12,9 @@ extern int iscsit_accept_np(struct iscsi_np *, struct iscsi_conn *); extern int iscsit_get_login_rx(struct iscsi_conn *, struct iscsi_login *); extern int iscsit_put_login_tx(struct iscsi_conn *, struct iscsi_login *, u32); extern void iscsit_free_conn(struct iscsi_np *, struct iscsi_conn *); +extern int iscsi_post_login_handler(struct iscsi_np *, struct iscsi_conn *, u8); +extern void iscsi_target_login_sess_out(struct iscsi_conn *, struct iscsi_np *, + bool, bool); extern int iscsi_target_login_thread(void *); extern int iscsi_login_disable_FIM_keys(struct iscsi_param_list *, struct iscsi_conn *); diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c index c4675b4ceb49..83c965c65386 100644 --- a/drivers/target/iscsi/iscsi_target_nego.c +++ b/drivers/target/iscsi/iscsi_target_nego.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains main functions related to iSCSI Parameter negotiation. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -90,7 +88,7 @@ int extract_param( if (len < 0) return -1; - if (len > max_length) { + if (len >= max_length) { pr_err("Length of input: %d exceeds max_length:" " %d\n", len, max_length); return -1; @@ -142,7 +140,7 @@ static u32 iscsi_handle_authentication( iscsi_nacl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl); - auth = ISCSI_NODE_AUTH(iscsi_nacl); + auth = &iscsi_nacl->node_auth; } } else { /* @@ -377,15 +375,284 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log return 0; } -static int iscsi_target_do_login_io(struct iscsi_conn *conn, struct iscsi_login *login) +static void iscsi_target_sk_data_ready(struct sock *sk, int count) { - if (iscsi_target_do_tx_login_io(conn, login) < 0) - return -1; + struct iscsi_conn *conn = sk->sk_user_data; + bool rc; - if (conn->conn_transport->iscsit_get_login_rx(conn, login) < 0) - return -1; + pr_debug("Entering iscsi_target_sk_data_ready: conn: %p\n", conn); - return 0; + write_lock_bh(&sk->sk_callback_lock); + if (!sk->sk_user_data) { + write_unlock_bh(&sk->sk_callback_lock); + return; + } + if (!test_bit(LOGIN_FLAGS_READY, &conn->login_flags)) { + write_unlock_bh(&sk->sk_callback_lock); + pr_debug("Got LOGIN_FLAGS_READY=0, conn: %p >>>>\n", conn); + return; + } + if (test_bit(LOGIN_FLAGS_CLOSED, &conn->login_flags)) { + write_unlock_bh(&sk->sk_callback_lock); + pr_debug("Got LOGIN_FLAGS_CLOSED=1, conn: %p >>>>\n", conn); + return; + } + if (test_and_set_bit(LOGIN_FLAGS_READ_ACTIVE, &conn->login_flags)) { + write_unlock_bh(&sk->sk_callback_lock); + pr_debug("Got LOGIN_FLAGS_READ_ACTIVE=1, conn: %p >>>>\n", conn); + return; + } + + rc = schedule_delayed_work(&conn->login_work, 0); + if (rc == false) { + pr_debug("iscsi_target_sk_data_ready, schedule_delayed_work" + " got false\n"); + } + write_unlock_bh(&sk->sk_callback_lock); +} + +static void iscsi_target_sk_state_change(struct sock *); + +static void iscsi_target_set_sock_callbacks(struct iscsi_conn *conn) +{ + struct sock *sk; + + if (!conn->sock) + return; + + sk = conn->sock->sk; + pr_debug("Entering iscsi_target_set_sock_callbacks: conn: %p\n", conn); + + write_lock_bh(&sk->sk_callback_lock); + sk->sk_user_data = conn; + conn->orig_data_ready = sk->sk_data_ready; + conn->orig_state_change = sk->sk_state_change; + sk->sk_data_ready = iscsi_target_sk_data_ready; + sk->sk_state_change = iscsi_target_sk_state_change; + write_unlock_bh(&sk->sk_callback_lock); + + sk->sk_sndtimeo = TA_LOGIN_TIMEOUT * HZ; + sk->sk_rcvtimeo = TA_LOGIN_TIMEOUT * HZ; +} + +static void iscsi_target_restore_sock_callbacks(struct iscsi_conn *conn) +{ + struct sock *sk; + + if (!conn->sock) + return; + + sk = conn->sock->sk; + pr_debug("Entering iscsi_target_restore_sock_callbacks: conn: %p\n", conn); + + write_lock_bh(&sk->sk_callback_lock); + if (!sk->sk_user_data) { + write_unlock_bh(&sk->sk_callback_lock); + return; + } + sk->sk_user_data = NULL; + sk->sk_data_ready = conn->orig_data_ready; + sk->sk_state_change = conn->orig_state_change; + write_unlock_bh(&sk->sk_callback_lock); + + sk->sk_sndtimeo = MAX_SCHEDULE_TIMEOUT; + sk->sk_rcvtimeo = MAX_SCHEDULE_TIMEOUT; +} + +static int iscsi_target_do_login(struct iscsi_conn *, struct iscsi_login *); + +static bool iscsi_target_sk_state_check(struct sock *sk) +{ + if (sk->sk_state == TCP_CLOSE_WAIT || sk->sk_state == TCP_CLOSE) { + pr_debug("iscsi_target_sk_state_check: TCP_CLOSE_WAIT|TCP_CLOSE," + "returning FALSE\n"); + return false; + } + return true; +} + +static void iscsi_target_login_drop(struct iscsi_conn *conn, struct iscsi_login *login) +{ + struct iscsi_np *np = login->np; + bool zero_tsih = login->zero_tsih; + + iscsi_remove_failed_auth_entry(conn); + iscsi_target_nego_release(conn); + iscsi_target_login_sess_out(conn, np, zero_tsih, true); +} + +static void iscsi_target_login_timeout(unsigned long data) +{ + struct iscsi_conn *conn = (struct iscsi_conn *)data; + + pr_debug("Entering iscsi_target_login_timeout >>>>>>>>>>>>>>>>>>>\n"); + + if (conn->login_kworker) { + pr_debug("Sending SIGINT to conn->login_kworker %s/%d\n", + conn->login_kworker->comm, conn->login_kworker->pid); + send_sig(SIGINT, conn->login_kworker, 1); + } +} + +static void iscsi_target_do_login_rx(struct work_struct *work) +{ + struct iscsi_conn *conn = container_of(work, + struct iscsi_conn, login_work.work); + struct iscsi_login *login = conn->login; + struct iscsi_np *np = login->np; + struct iscsi_portal_group *tpg = conn->tpg; + struct iscsi_tpg_np *tpg_np = conn->tpg_np; + struct timer_list login_timer; + int rc, zero_tsih = login->zero_tsih; + bool state; + + pr_debug("entering iscsi_target_do_login_rx, conn: %p, %s:%d\n", + conn, current->comm, current->pid); + + spin_lock(&tpg->tpg_state_lock); + state = (tpg->tpg_state == TPG_STATE_ACTIVE); + spin_unlock(&tpg->tpg_state_lock); + + if (state == false) { + pr_debug("iscsi_target_do_login_rx: tpg_state != TPG_STATE_ACTIVE\n"); + iscsi_target_restore_sock_callbacks(conn); + iscsi_target_login_drop(conn, login); + iscsit_deaccess_np(np, tpg, tpg_np); + return; + } + + if (conn->sock) { + struct sock *sk = conn->sock->sk; + + read_lock_bh(&sk->sk_callback_lock); + state = iscsi_target_sk_state_check(sk); + read_unlock_bh(&sk->sk_callback_lock); + + if (state == false) { + pr_debug("iscsi_target_do_login_rx, TCP state CLOSE\n"); + iscsi_target_restore_sock_callbacks(conn); + iscsi_target_login_drop(conn, login); + iscsit_deaccess_np(np, tpg, tpg_np); + return; + } + } + + conn->login_kworker = current; + allow_signal(SIGINT); + + init_timer(&login_timer); + login_timer.expires = (get_jiffies_64() + TA_LOGIN_TIMEOUT * HZ); + login_timer.data = (unsigned long)conn; + login_timer.function = iscsi_target_login_timeout; + add_timer(&login_timer); + pr_debug("Starting login_timer for %s/%d\n", current->comm, current->pid); + + rc = conn->conn_transport->iscsit_get_login_rx(conn, login); + del_timer_sync(&login_timer); + flush_signals(current); + conn->login_kworker = NULL; + + if (rc < 0) { + iscsi_target_restore_sock_callbacks(conn); + iscsi_target_login_drop(conn, login); + iscsit_deaccess_np(np, tpg, tpg_np); + return; + } + + pr_debug("iscsi_target_do_login_rx after rx_login_io, %p, %s:%d\n", + conn, current->comm, current->pid); + + rc = iscsi_target_do_login(conn, login); + if (rc < 0) { + iscsi_target_restore_sock_callbacks(conn); + iscsi_target_login_drop(conn, login); + iscsit_deaccess_np(np, tpg, tpg_np); + } else if (!rc) { + if (conn->sock) { + struct sock *sk = conn->sock->sk; + + write_lock_bh(&sk->sk_callback_lock); + clear_bit(LOGIN_FLAGS_READ_ACTIVE, &conn->login_flags); + write_unlock_bh(&sk->sk_callback_lock); + } + } else if (rc == 1) { + iscsi_target_nego_release(conn); + iscsi_post_login_handler(np, conn, zero_tsih); + iscsit_deaccess_np(np, tpg, tpg_np); + } +} + +static void iscsi_target_do_cleanup(struct work_struct *work) +{ + struct iscsi_conn *conn = container_of(work, + struct iscsi_conn, login_cleanup_work.work); + struct sock *sk = conn->sock->sk; + struct iscsi_login *login = conn->login; + struct iscsi_np *np = login->np; + struct iscsi_portal_group *tpg = conn->tpg; + struct iscsi_tpg_np *tpg_np = conn->tpg_np; + + pr_debug("Entering iscsi_target_do_cleanup\n"); + + cancel_delayed_work_sync(&conn->login_work); + conn->orig_state_change(sk); + + iscsi_target_restore_sock_callbacks(conn); + iscsi_target_login_drop(conn, login); + iscsit_deaccess_np(np, tpg, tpg_np); + + pr_debug("iscsi_target_do_cleanup done()\n"); +} + +static void iscsi_target_sk_state_change(struct sock *sk) +{ + struct iscsi_conn *conn; + void (*orig_state_change)(struct sock *); + bool state; + + pr_debug("Entering iscsi_target_sk_state_change\n"); + + write_lock_bh(&sk->sk_callback_lock); + conn = sk->sk_user_data; + if (!conn) { + write_unlock_bh(&sk->sk_callback_lock); + return; + } + orig_state_change = conn->orig_state_change; + + if (!test_bit(LOGIN_FLAGS_READY, &conn->login_flags)) { + pr_debug("Got LOGIN_FLAGS_READY=0 sk_state_change conn: %p\n", + conn); + write_unlock_bh(&sk->sk_callback_lock); + orig_state_change(sk); + return; + } + if (test_bit(LOGIN_FLAGS_READ_ACTIVE, &conn->login_flags)) { + pr_debug("Got LOGIN_FLAGS_READ_ACTIVE=1 sk_state_change" + " conn: %p\n", conn); + write_unlock_bh(&sk->sk_callback_lock); + orig_state_change(sk); + return; + } + if (test_and_set_bit(LOGIN_FLAGS_CLOSED, &conn->login_flags)) { + pr_debug("Got LOGIN_FLAGS_CLOSED=1 sk_state_change conn: %p\n", + conn); + write_unlock_bh(&sk->sk_callback_lock); + orig_state_change(sk); + return; + } + + state = iscsi_target_sk_state_check(sk); + write_unlock_bh(&sk->sk_callback_lock); + + pr_debug("iscsi_target_sk_state_change: state: %d\n", state); + + if (!state) { + pr_debug("iscsi_target_sk_state_change got failed state\n"); + schedule_delayed_work(&conn->login_cleanup_work, 0); + return; + } + orig_state_change(sk); } /* @@ -522,7 +789,7 @@ static int iscsi_target_handle_csg_zero( return -1; if (!iscsi_check_negotiated_keys(conn->param_list)) { - if (ISCSI_TPG_ATTRIB(ISCSI_TPG_C(conn))->authentication && + if (conn->tpg->tpg_attrib.authentication && !strncmp(param->value, NONE, 4)) { pr_err("Initiator sent AuthMethod=None but" " Target is enforcing iSCSI Authentication," @@ -532,7 +799,7 @@ static int iscsi_target_handle_csg_zero( return -1; } - if (ISCSI_TPG_ATTRIB(ISCSI_TPG_C(conn))->authentication && + if (conn->tpg->tpg_attrib.authentication && !login->auth_complete) return 0; @@ -595,7 +862,7 @@ static int iscsi_target_handle_csg_one(struct iscsi_conn *conn, struct iscsi_log } if (!login->auth_complete && - ISCSI_TPG_ATTRIB(ISCSI_TPG_C(conn))->authentication) { + conn->tpg->tpg_attrib.authentication) { pr_err("Initiator is requesting CSG: 1, has not been" " successfully authenticated, and the Target is" " enforcing iSCSI Authentication, login failed.\n"); @@ -643,10 +910,11 @@ static int iscsi_target_do_login(struct iscsi_conn *conn, struct iscsi_login *lo if (login_rsp->flags & ISCSI_FLAG_LOGIN_TRANSIT) { login->tsih = conn->sess->tsih; login->login_complete = 1; + iscsi_target_restore_sock_callbacks(conn); if (iscsi_target_do_tx_login_io(conn, login) < 0) return -1; - return 0; + return 1; } break; default: @@ -656,13 +924,29 @@ static int iscsi_target_do_login(struct iscsi_conn *conn, struct iscsi_login *lo break; } - if (iscsi_target_do_login_io(conn, login) < 0) + if (iscsi_target_do_tx_login_io(conn, login) < 0) return -1; if (login_rsp->flags & ISCSI_FLAG_LOGIN_TRANSIT) { login_rsp->flags &= ~ISCSI_FLAG_LOGIN_TRANSIT; login_rsp->flags &= ~ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK; } + break; + } + + if (conn->sock) { + struct sock *sk = conn->sock->sk; + bool state; + + read_lock_bh(&sk->sk_callback_lock); + state = iscsi_target_sk_state_check(sk); + read_unlock_bh(&sk->sk_callback_lock); + + if (!state) { + pr_debug("iscsi_target_do_login() failed state for" + " conn: %p\n", conn); + return -1; + } } return 0; @@ -695,9 +979,17 @@ int iscsi_target_locate_portal( char *tmpbuf, *start = NULL, *end = NULL, *key, *value; struct iscsi_session *sess = conn->sess; struct iscsi_tiqn *tiqn; + struct iscsi_tpg_np *tpg_np = NULL; struct iscsi_login_req *login_req; - u32 payload_length; - int sessiontype = 0, ret = 0; + struct se_node_acl *se_nacl; + u32 payload_length, queue_depth = 0; + int sessiontype = 0, ret = 0, tag_num, tag_size; + + INIT_DELAYED_WORK(&conn->login_work, iscsi_target_do_login_rx); + INIT_DELAYED_WORK(&conn->login_cleanup_work, iscsi_target_do_cleanup); + iscsi_target_set_sock_callbacks(conn); + + login->np = np; login_req = (struct iscsi_login_req *) login->req; payload_length = ntoh24(login_req->dlength); @@ -791,7 +1083,7 @@ int iscsi_target_locate_portal( goto out; } ret = 0; - goto out; + goto alloc_tags; } get_target: @@ -822,7 +1114,7 @@ get_target: /* * Locate Target Portal Group from Storage Node. */ - conn->tpg = iscsit_get_tpg_from_np(tiqn, np); + conn->tpg = iscsit_get_tpg_from_np(tiqn, np, &tpg_np); if (!conn->tpg) { pr_err("Unable to locate Target Portal Group" " on %s\n", tiqn->tiqn); @@ -832,12 +1124,16 @@ get_target: ret = -1; goto out; } + conn->tpg_np = tpg_np; pr_debug("Located Portal Group Object: %hu\n", conn->tpg->tpgt); /* * Setup crc32c modules from libcrypto */ if (iscsi_login_setup_crypto(conn) < 0) { pr_err("iscsi_login_setup_crypto() failed\n"); + kref_put(&tpg_np->tpg_np_kref, iscsit_login_kref_put); + iscsit_put_tiqn_for_login(tiqn); + conn->tpg = NULL; ret = -1; goto out; } @@ -846,11 +1142,12 @@ get_target: * process login attempt. */ if (iscsit_access_np(np, conn->tpg) < 0) { + kref_put(&tpg_np->tpg_np_kref, iscsit_login_kref_put); iscsit_put_tiqn_for_login(tiqn); iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR, ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE); - ret = -1; conn->tpg = NULL; + ret = -1; goto out; } @@ -883,8 +1180,27 @@ get_target: ret = -1; goto out; } + se_nacl = sess->se_sess->se_node_acl; + queue_depth = se_nacl->queue_depth; + /* + * Setup pre-allocated tags based upon allowed per NodeACL CmdSN + * depth for non immediate commands, plus extra tags for immediate + * commands. + * + * Also enforce a ISCSIT_MIN_TAGS to prevent unnecessary contention + * in per-cpu-ida tag allocation logic + small queue_depth. + */ +alloc_tags: + tag_num = max_t(u32, ISCSIT_MIN_TAGS, queue_depth); + tag_num += (tag_num / 2) + ISCSIT_EXTRA_TAGS; + tag_size = sizeof(struct iscsi_cmd) + conn->conn_transport->priv_size; - ret = 0; + ret = transport_alloc_session_tags(sess->se_sess, tag_num, tag_size); + if (ret < 0) { + iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR, + ISCSI_LOGIN_STATUS_NO_RESOURCES); + ret = -1; + } out: kfree(tmpbuf); return ret; @@ -897,10 +1213,23 @@ int iscsi_target_start_negotiation( int ret; ret = iscsi_target_do_login(conn, login); - if (ret != 0) + if (!ret) { + if (conn->sock) { + struct sock *sk = conn->sock->sk; + + write_lock_bh(&sk->sk_callback_lock); + set_bit(LOGIN_FLAGS_READY, &conn->login_flags); + write_unlock_bh(&sk->sk_callback_lock); + } + } else if (ret < 0) { + cancel_delayed_work_sync(&conn->login_work); + cancel_delayed_work_sync(&conn->login_cleanup_work); + iscsi_target_restore_sock_callbacks(conn); iscsi_remove_failed_auth_entry(conn); + } + if (ret != 0) + iscsi_target_nego_release(conn); - iscsi_target_nego_release(conn); return ret; } diff --git a/drivers/target/iscsi/iscsi_target_nodeattrib.c b/drivers/target/iscsi/iscsi_target_nodeattrib.c index 11dc2936af76..16454a922e2b 100644 --- a/drivers/target/iscsi/iscsi_target_nodeattrib.c +++ b/drivers/target/iscsi/iscsi_target_nodeattrib.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains the main functions related to Initiator Node Attributes. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -35,7 +33,8 @@ static inline char *iscsit_na_get_initiatorname( } void iscsit_set_default_node_attribues( - struct iscsi_node_acl *acl) + struct iscsi_node_acl *acl, + struct iscsi_portal_group *tpg) { struct iscsi_node_attrib *a = &acl->node_attrib; @@ -46,7 +45,7 @@ void iscsit_set_default_node_attribues( a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS; a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS; a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS; - a->default_erl = NA_DEFAULT_ERL; + a->default_erl = tpg->tpg_attrib.default_erl; } int iscsit_na_dataout_timeout( diff --git a/drivers/target/iscsi/iscsi_target_nodeattrib.h b/drivers/target/iscsi/iscsi_target_nodeattrib.h index c970b326ef23..0c69a46a62ec 100644 --- a/drivers/target/iscsi/iscsi_target_nodeattrib.h +++ b/drivers/target/iscsi/iscsi_target_nodeattrib.h @@ -1,7 +1,8 @@ #ifndef ISCSI_TARGET_NODEATTRIB_H #define ISCSI_TARGET_NODEATTRIB_H -extern void iscsit_set_default_node_attribues(struct iscsi_node_acl *); +extern void iscsit_set_default_node_attribues(struct iscsi_node_acl *, + struct iscsi_portal_group *); extern int iscsit_na_dataout_timeout(struct iscsi_node_acl *, u32); extern int iscsit_na_dataout_timeout_retries(struct iscsi_node_acl *, u32); extern int iscsit_na_nopin_timeout(struct iscsi_node_acl *, u32); diff --git a/drivers/target/iscsi/iscsi_target_parameters.c b/drivers/target/iscsi/iscsi_target_parameters.c index 35fd6439eb01..4d2e23fc76fd 100644 --- a/drivers/target/iscsi/iscsi_target_parameters.c +++ b/drivers/target/iscsi/iscsi_target_parameters.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains main functions related to iSCSI Parameter negotiation. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -1182,7 +1180,7 @@ static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value, unsigned long long tmp; int rc; - rc = strict_strtoull(param->value, 0, &tmp); + rc = kstrtoull(param->value, 0, &tmp); if (rc < 0) return -1; diff --git a/drivers/target/iscsi/iscsi_target_seq_pdu_list.c b/drivers/target/iscsi/iscsi_target_seq_pdu_list.c index edb592a368ef..ca41b583f2f6 100644 --- a/drivers/target/iscsi/iscsi_target_seq_pdu_list.c +++ b/drivers/target/iscsi/iscsi_target_seq_pdu_list.c @@ -2,9 +2,7 @@ * This file contains main functions related to iSCSI DataSequenceInOrder=No * and DataPDUInOrder=No. * - \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * diff --git a/drivers/target/iscsi/iscsi_target_stat.c b/drivers/target/iscsi/iscsi_target_stat.c index 464b4206a51e..103395510307 100644 --- a/drivers/target/iscsi/iscsi_target_stat.c +++ b/drivers/target/iscsi/iscsi_target_stat.c @@ -2,9 +2,7 @@ * Modern ConfigFS group context specific iSCSI statistics based on original * iscsi_target_mib.c code * - * Copyright (c) 2011 Rising Tide Systems - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * Copyright (c) 2011-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -177,7 +175,7 @@ ISCSI_STAT_INSTANCE_ATTR_RO(description); static ssize_t iscsi_stat_instance_show_attr_vendor( struct iscsi_wwn_stat_grps *igrps, char *page) { - return snprintf(page, PAGE_SIZE, "RisingTide Systems iSCSI-Target\n"); + return snprintf(page, PAGE_SIZE, "Datera, Inc. iSCSI-Target\n"); } ISCSI_STAT_INSTANCE_ATTR_RO(vendor); @@ -432,13 +430,7 @@ static ssize_t iscsi_stat_tgt_attr_show_attr_fail_intr_addr( int ret; spin_lock(&lstat->lock); - if (lstat->last_intr_fail_ip_family == AF_INET6) { - ret = snprintf(page, PAGE_SIZE, "[%s]\n", - lstat->last_intr_fail_ip_addr); - } else { - ret = snprintf(page, PAGE_SIZE, "%s\n", - lstat->last_intr_fail_ip_addr); - } + ret = snprintf(page, PAGE_SIZE, "%s\n", lstat->last_intr_fail_ip_addr); spin_unlock(&lstat->lock); return ret; @@ -800,7 +792,8 @@ static ssize_t iscsi_stat_sess_show_attr_cmd_pdus( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%u\n", sess->cmd_pdus); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->cmd_pdus)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -823,7 +816,8 @@ static ssize_t iscsi_stat_sess_show_attr_rsp_pdus( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%u\n", sess->rsp_pdus); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->rsp_pdus)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -846,8 +840,8 @@ static ssize_t iscsi_stat_sess_show_attr_txdata_octs( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%llu\n", - (unsigned long long)sess->tx_data_octets); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->tx_data_octets)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -870,8 +864,8 @@ static ssize_t iscsi_stat_sess_show_attr_rxdata_octs( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%llu\n", - (unsigned long long)sess->rx_data_octets); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->rx_data_octets)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -894,8 +888,8 @@ static ssize_t iscsi_stat_sess_show_attr_conn_digest_errors( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%u\n", - sess->conn_digest_errors); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->conn_digest_errors)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -918,8 +912,8 @@ static ssize_t iscsi_stat_sess_show_attr_conn_timeout_errors( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%u\n", - sess->conn_timeout_errors); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->conn_timeout_errors)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); diff --git a/drivers/target/iscsi/iscsi_target_tmr.c b/drivers/target/iscsi/iscsi_target_tmr.c index b997e5da47d3..78404b1cc0bf 100644 --- a/drivers/target/iscsi/iscsi_target_tmr.c +++ b/drivers/target/iscsi/iscsi_target_tmr.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains the iSCSI Target specific Task Management functions. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c index 439260b7d87f..39761837608d 100644 --- a/drivers/target/iscsi/iscsi_target_tpg.c +++ b/drivers/target/iscsi/iscsi_target_tpg.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains iSCSI Target Portal Group related functions. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -49,7 +47,7 @@ struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u1 INIT_LIST_HEAD(&tpg->tpg_gnp_list); INIT_LIST_HEAD(&tpg->tpg_list); mutex_init(&tpg->tpg_access_lock); - mutex_init(&tpg->np_login_lock); + sema_init(&tpg->np_login_sem, 1); spin_lock_init(&tpg->tpg_state_lock); spin_lock_init(&tpg->tpg_np_lock); @@ -129,7 +127,8 @@ void iscsit_release_discovery_tpg(void) struct iscsi_portal_group *iscsit_get_tpg_from_np( struct iscsi_tiqn *tiqn, - struct iscsi_np *np) + struct iscsi_np *np, + struct iscsi_tpg_np **tpg_np_out) { struct iscsi_portal_group *tpg = NULL; struct iscsi_tpg_np *tpg_np; @@ -147,6 +146,8 @@ struct iscsi_portal_group *iscsit_get_tpg_from_np( spin_lock(&tpg->tpg_np_lock); list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { if (tpg_np->tpg_np == np) { + *tpg_np_out = tpg_np; + kref_get(&tpg_np->tpg_np_kref); spin_unlock(&tpg->tpg_np_lock); spin_unlock(&tiqn->tiqn_tpg_lock); return tpg; @@ -175,18 +176,20 @@ void iscsit_put_tpg(struct iscsi_portal_group *tpg) static void iscsit_clear_tpg_np_login_thread( struct iscsi_tpg_np *tpg_np, - struct iscsi_portal_group *tpg) + struct iscsi_portal_group *tpg, + bool shutdown) { if (!tpg_np->tpg_np) { pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); return; } - iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg); + iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); } void iscsit_clear_tpg_np_login_threads( - struct iscsi_portal_group *tpg) + struct iscsi_portal_group *tpg, + bool shutdown) { struct iscsi_tpg_np *tpg_np; @@ -197,7 +200,7 @@ void iscsit_clear_tpg_np_login_threads( continue; } spin_unlock(&tpg->tpg_np_lock); - iscsit_clear_tpg_np_login_thread(tpg_np, tpg); + iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); spin_lock(&tpg->tpg_np_lock); } spin_unlock(&tpg->tpg_np_lock); @@ -220,6 +223,8 @@ static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; + a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; + a->default_erl = TA_DEFAULT_ERL; } int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) @@ -234,7 +239,7 @@ int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_gro if (iscsi_create_default_params(&tpg->param_list) < 0) goto err_out; - ISCSI_TPG_ATTRIB(tpg)->tpg = tpg; + tpg->tpg_attrib.tpg = tpg; spin_lock(&tpg->tpg_state_lock); tpg->tpg_state = TPG_STATE_INACTIVE; @@ -268,6 +273,8 @@ int iscsit_tpg_del_portal_group( tpg->tpg_state = TPG_STATE_INACTIVE; spin_unlock(&tpg->tpg_state_lock); + iscsit_clear_tpg_np_login_threads(tpg, true); + if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { pr_err("Unable to delete iSCSI Target Portal Group:" " %hu while active sessions exist, and force=0\n", @@ -325,7 +332,7 @@ int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) return -EINVAL; } - if (ISCSI_TPG_ATTRIB(tpg)->authentication) { + if (tpg->tpg_attrib.authentication) { if (!strcmp(param->value, NONE)) { ret = iscsi_update_param_value(param, CHAP); if (ret) @@ -368,7 +375,7 @@ int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) tpg->tpg_state = TPG_STATE_INACTIVE; spin_unlock(&tpg->tpg_state_lock); - iscsit_clear_tpg_np_login_threads(tpg); + iscsit_clear_tpg_np_login_threads(tpg, false); if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { spin_lock(&tpg->tpg_state_lock); @@ -490,6 +497,8 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal( INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); spin_lock_init(&tpg_np->tpg_np_parent_lock); + init_completion(&tpg_np->tpg_np_comp); + kref_init(&tpg_np->tpg_np_kref); tpg_np->tpg_np = np; tpg_np->tpg = tpg; @@ -520,7 +529,7 @@ static int iscsit_tpg_release_np( struct iscsi_portal_group *tpg, struct iscsi_np *np) { - iscsit_clear_tpg_np_login_thread(tpg_np, tpg); + iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n", tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, @@ -813,3 +822,39 @@ int iscsit_ta_prod_mode_write_protect( return 0; } + +int iscsit_ta_demo_mode_discovery( + struct iscsi_portal_group *tpg, + u32 flag) +{ + struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; + + if ((flag != 0) && (flag != 1)) { + pr_err("Illegal value %d\n", flag); + return -EINVAL; + } + + a->demo_mode_discovery = flag; + pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" + " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? + "ON" : "OFF"); + + return 0; +} + +int iscsit_ta_default_erl( + struct iscsi_portal_group *tpg, + u32 default_erl) +{ + struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; + + if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { + pr_err("Illegal value for default_erl: %u\n", default_erl); + return -EINVAL; + } + + a->default_erl = default_erl; + pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); + + return 0; +} diff --git a/drivers/target/iscsi/iscsi_target_tpg.h b/drivers/target/iscsi/iscsi_target_tpg.h index dda48c141a8c..213c0fc7fdc9 100644 --- a/drivers/target/iscsi/iscsi_target_tpg.h +++ b/drivers/target/iscsi/iscsi_target_tpg.h @@ -5,10 +5,10 @@ extern struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *, extern int iscsit_load_discovery_tpg(void); extern void iscsit_release_discovery_tpg(void); extern struct iscsi_portal_group *iscsit_get_tpg_from_np(struct iscsi_tiqn *, - struct iscsi_np *); + struct iscsi_np *, struct iscsi_tpg_np **); extern int iscsit_get_tpg(struct iscsi_portal_group *); extern void iscsit_put_tpg(struct iscsi_portal_group *); -extern void iscsit_clear_tpg_np_login_threads(struct iscsi_portal_group *); +extern void iscsit_clear_tpg_np_login_threads(struct iscsi_portal_group *, bool); extern void iscsit_tpg_dump_params(struct iscsi_portal_group *); extern int iscsit_tpg_add_portal_group(struct iscsi_tiqn *, struct iscsi_portal_group *); extern int iscsit_tpg_del_portal_group(struct iscsi_tiqn *, struct iscsi_portal_group *, @@ -37,5 +37,7 @@ extern int iscsit_ta_default_cmdsn_depth(struct iscsi_portal_group *, u32); extern int iscsit_ta_cache_dynamic_acls(struct iscsi_portal_group *, u32); extern int iscsit_ta_demo_mode_write_protect(struct iscsi_portal_group *, u32); extern int iscsit_ta_prod_mode_write_protect(struct iscsi_portal_group *, u32); +extern int iscsit_ta_demo_mode_discovery(struct iscsi_portal_group *, u32); +extern int iscsit_ta_default_erl(struct iscsi_portal_group *, u32); #endif /* ISCSI_TARGET_TPG_H */ diff --git a/drivers/target/iscsi/iscsi_target_tq.c b/drivers/target/iscsi/iscsi_target_tq.c index 81289520f96b..601e9cc61e98 100644 --- a/drivers/target/iscsi/iscsi_target_tq.c +++ b/drivers/target/iscsi/iscsi_target_tq.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains the iSCSI Login Thread and Thread Queue functions. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -105,12 +103,11 @@ int iscsi_allocate_thread_sets(u32 thread_pair_count) ts->status = ISCSI_THREAD_SET_FREE; INIT_LIST_HEAD(&ts->ts_list); spin_lock_init(&ts->ts_state_lock); - init_completion(&ts->rx_post_start_comp); - init_completion(&ts->tx_post_start_comp); init_completion(&ts->rx_restart_comp); init_completion(&ts->tx_restart_comp); init_completion(&ts->rx_start_comp); init_completion(&ts->tx_start_comp); + sema_init(&ts->ts_activate_sem, 0); ts->create_threads = 1; ts->tx_thread = kthread_run(iscsi_target_tx_thread, ts, "%s", @@ -139,35 +136,44 @@ int iscsi_allocate_thread_sets(u32 thread_pair_count) return allocated_thread_pair_count; } -void iscsi_deallocate_thread_sets(void) +static void iscsi_deallocate_thread_one(struct iscsi_thread_set *ts) { - u32 released_count = 0; - struct iscsi_thread_set *ts = NULL; - - while ((ts = iscsi_get_ts_from_inactive_list())) { + spin_lock_bh(&ts->ts_state_lock); + ts->status = ISCSI_THREAD_SET_DIE; + if (ts->rx_thread) { + complete(&ts->rx_start_comp); + spin_unlock_bh(&ts->ts_state_lock); + kthread_stop(ts->rx_thread); spin_lock_bh(&ts->ts_state_lock); - ts->status = ISCSI_THREAD_SET_DIE; + } + if (ts->tx_thread) { + complete(&ts->tx_start_comp); spin_unlock_bh(&ts->ts_state_lock); + kthread_stop(ts->tx_thread); + spin_lock_bh(&ts->ts_state_lock); + } + spin_unlock_bh(&ts->ts_state_lock); + /* + * Release this thread_id in the thread_set_bitmap + */ + spin_lock(&ts_bitmap_lock); + bitmap_release_region(iscsit_global->ts_bitmap, + ts->thread_id, get_order(1)); + spin_unlock(&ts_bitmap_lock); - if (ts->rx_thread) { - send_sig(SIGINT, ts->rx_thread, 1); - kthread_stop(ts->rx_thread); - } - if (ts->tx_thread) { - send_sig(SIGINT, ts->tx_thread, 1); - kthread_stop(ts->tx_thread); - } - /* - * Release this thread_id in the thread_set_bitmap - */ - spin_lock(&ts_bitmap_lock); - bitmap_release_region(iscsit_global->ts_bitmap, - ts->thread_id, get_order(1)); - spin_unlock(&ts_bitmap_lock); + kfree(ts); +} +void iscsi_deallocate_thread_sets(void) +{ + struct iscsi_thread_set *ts = NULL; + u32 released_count = 0; + + while ((ts = iscsi_get_ts_from_inactive_list())) { + + iscsi_deallocate_thread_one(ts); released_count++; - kfree(ts); } if (released_count) @@ -187,34 +193,13 @@ static void iscsi_deallocate_extra_thread_sets(void) if (!ts) break; - spin_lock_bh(&ts->ts_state_lock); - ts->status = ISCSI_THREAD_SET_DIE; - spin_unlock_bh(&ts->ts_state_lock); - - if (ts->rx_thread) { - send_sig(SIGINT, ts->rx_thread, 1); - kthread_stop(ts->rx_thread); - } - if (ts->tx_thread) { - send_sig(SIGINT, ts->tx_thread, 1); - kthread_stop(ts->tx_thread); - } - /* - * Release this thread_id in the thread_set_bitmap - */ - spin_lock(&ts_bitmap_lock); - bitmap_release_region(iscsit_global->ts_bitmap, - ts->thread_id, get_order(1)); - spin_unlock(&ts_bitmap_lock); - + iscsi_deallocate_thread_one(ts); released_count++; - kfree(ts); } - if (released_count) { + if (released_count) pr_debug("Stopped %d thread set(s) (%d total threads)." "\n", released_count, released_count * 2); - } } void iscsi_activate_thread_set(struct iscsi_conn *conn, struct iscsi_thread_set *ts) @@ -224,37 +209,23 @@ void iscsi_activate_thread_set(struct iscsi_conn *conn, struct iscsi_thread_set spin_lock_bh(&ts->ts_state_lock); conn->thread_set = ts; ts->conn = conn; + ts->status = ISCSI_THREAD_SET_ACTIVE; spin_unlock_bh(&ts->ts_state_lock); - /* - * Start up the RX thread and wait on rx_post_start_comp. The RX - * Thread will then do the same for the TX Thread in - * iscsi_rx_thread_pre_handler(). - */ + complete(&ts->rx_start_comp); - wait_for_completion(&ts->rx_post_start_comp); + complete(&ts->tx_start_comp); + + down(&ts->ts_activate_sem); } struct iscsi_thread_set *iscsi_get_thread_set(void) { - int allocate_ts = 0; - struct completion comp; - struct iscsi_thread_set *ts = NULL; - /* - * If no inactive thread set is available on the first call to - * iscsi_get_ts_from_inactive_list(), sleep for a second and - * try again. If still none are available after two attempts, - * allocate a set ourselves. - */ + struct iscsi_thread_set *ts; + get_set: ts = iscsi_get_ts_from_inactive_list(); if (!ts) { - if (allocate_ts == 2) - iscsi_allocate_thread_sets(1); - - init_completion(&comp); - wait_for_completion_timeout(&comp, 1 * HZ); - - allocate_ts++; + iscsi_allocate_thread_sets(1); goto get_set; } @@ -263,6 +234,7 @@ get_set: ts->thread_count = 2; init_completion(&ts->rx_restart_comp); init_completion(&ts->tx_restart_comp); + sema_init(&ts->ts_activate_sem, 0); return ts; } @@ -400,7 +372,8 @@ static void iscsi_check_to_add_additional_sets(void) static int iscsi_signal_thread_pre_handler(struct iscsi_thread_set *ts) { spin_lock_bh(&ts->ts_state_lock); - if ((ts->status == ISCSI_THREAD_SET_DIE) || signal_pending(current)) { + if (ts->status == ISCSI_THREAD_SET_DIE || kthread_should_stop() || + signal_pending(current)) { spin_unlock_bh(&ts->ts_state_lock); return -1; } @@ -419,7 +392,8 @@ struct iscsi_conn *iscsi_rx_thread_pre_handler(struct iscsi_thread_set *ts) goto sleep; } - flush_signals(current); + if (ts->status != ISCSI_THREAD_SET_DIE) + flush_signals(current); if (ts->delay_inactive && (--ts->thread_count == 0)) { spin_unlock_bh(&ts->ts_state_lock); @@ -446,18 +420,19 @@ sleep: if (iscsi_signal_thread_pre_handler(ts) < 0) return NULL; + iscsi_check_to_add_additional_sets(); + + spin_lock_bh(&ts->ts_state_lock); if (!ts->conn) { pr_err("struct iscsi_thread_set->conn is NULL for" - " thread_id: %d, going back to sleep\n", ts->thread_id); - goto sleep; + " RX thread_id: %s/%d\n", current->comm, current->pid); + spin_unlock_bh(&ts->ts_state_lock); + return NULL; } - iscsi_check_to_add_additional_sets(); - /* - * The RX Thread starts up the TX Thread and sleeps. - */ ts->thread_clear |= ISCSI_CLEAR_RX_THREAD; - complete(&ts->tx_start_comp); - wait_for_completion(&ts->tx_post_start_comp); + spin_unlock_bh(&ts->ts_state_lock); + + up(&ts->ts_activate_sem); return ts->conn; } @@ -472,7 +447,8 @@ struct iscsi_conn *iscsi_tx_thread_pre_handler(struct iscsi_thread_set *ts) goto sleep; } - flush_signals(current); + if (ts->status != ISCSI_THREAD_SET_DIE) + flush_signals(current); if (ts->delay_inactive && (--ts->thread_count == 0)) { spin_unlock_bh(&ts->ts_state_lock); @@ -498,27 +474,20 @@ sleep: if (iscsi_signal_thread_pre_handler(ts) < 0) return NULL; - if (!ts->conn) { - pr_err("struct iscsi_thread_set->conn is NULL for " - " thread_id: %d, going back to sleep\n", - ts->thread_id); - goto sleep; - } - iscsi_check_to_add_additional_sets(); - /* - * From the TX thread, up the tx_post_start_comp that the RX Thread is - * sleeping on in iscsi_rx_thread_pre_handler(), then up the - * rx_post_start_comp that iscsi_activate_thread_set() is sleeping on. - */ - ts->thread_clear |= ISCSI_CLEAR_TX_THREAD; - complete(&ts->tx_post_start_comp); - complete(&ts->rx_post_start_comp); spin_lock_bh(&ts->ts_state_lock); - ts->status = ISCSI_THREAD_SET_ACTIVE; + if (!ts->conn) { + pr_err("struct iscsi_thread_set->conn is NULL for" + " TX thread_id: %s/%d\n", current->comm, current->pid); + spin_unlock_bh(&ts->ts_state_lock); + return NULL; + } + ts->thread_clear |= ISCSI_CLEAR_TX_THREAD; spin_unlock_bh(&ts->ts_state_lock); + up(&ts->ts_activate_sem); + return ts->conn; } diff --git a/drivers/target/iscsi/iscsi_target_tq.h b/drivers/target/iscsi/iscsi_target_tq.h index 547d11831282..cc1eede5ab3a 100644 --- a/drivers/target/iscsi/iscsi_target_tq.h +++ b/drivers/target/iscsi/iscsi_target_tq.h @@ -64,10 +64,6 @@ struct iscsi_thread_set { struct iscsi_conn *conn; /* used for controlling ts state accesses */ spinlock_t ts_state_lock; - /* Used for rx side post startup */ - struct completion rx_post_start_comp; - /* Used for tx side post startup */ - struct completion tx_post_start_comp; /* used for restarting thread queue */ struct completion rx_restart_comp; /* used for restarting thread queue */ @@ -82,6 +78,7 @@ struct iscsi_thread_set { struct task_struct *tx_thread; /* struct iscsi_thread_set in list list head*/ struct list_head ts_list; + struct semaphore ts_activate_sem; }; #endif /*** ISCSI_THREAD_QUEUE_H ***/ diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index 1df06d5e4e01..0819e688a398 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -1,9 +1,7 @@ /******************************************************************************* * This file contains the iSCSI Target specific utility functions. * - * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * @@ -19,6 +17,7 @@ ******************************************************************************/ #include <linux/list.h> +#include <linux/percpu_ida.h> #include <scsi/scsi_tcq.h> #include <scsi/iscsi_proto.h> #include <target/target_core_base.h> @@ -149,18 +148,6 @@ void iscsit_free_r2ts_from_list(struct iscsi_cmd *cmd) spin_unlock_bh(&cmd->r2t_lock); } -struct iscsi_cmd *iscsit_alloc_cmd(struct iscsi_conn *conn, gfp_t gfp_mask) -{ - struct iscsi_cmd *cmd; - - cmd = kmem_cache_zalloc(lio_cmd_cache, gfp_mask); - if (!cmd) - return NULL; - - cmd->release_cmd = &iscsit_release_cmd; - return cmd; -} - /* * May be called from software interrupt (timer) context for allocating * iSCSI NopINs. @@ -168,12 +155,15 @@ struct iscsi_cmd *iscsit_alloc_cmd(struct iscsi_conn *conn, gfp_t gfp_mask) struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *conn, gfp_t gfp_mask) { struct iscsi_cmd *cmd; + struct se_session *se_sess = conn->sess->se_sess; + int size, tag; - cmd = conn->conn_transport->iscsit_alloc_cmd(conn, gfp_mask); - if (!cmd) { - pr_err("Unable to allocate memory for struct iscsi_cmd.\n"); - return NULL; - } + tag = percpu_ida_alloc(&se_sess->sess_tag_pool, gfp_mask); + size = sizeof(struct iscsi_cmd) + conn->conn_transport->priv_size; + cmd = (struct iscsi_cmd *)(se_sess->sess_cmd_map + (tag * size)); + memset(cmd, 0, size); + + cmd->se_cmd.map_tag = tag; cmd->conn = conn; INIT_LIST_HEAD(&cmd->i_conn_node); INIT_LIST_HEAD(&cmd->datain_list); @@ -252,9 +242,9 @@ static inline int iscsit_check_received_cmdsn(struct iscsi_session *sess, u32 cm */ if (iscsi_sna_gt(cmdsn, sess->max_cmd_sn)) { pr_err("Received CmdSN: 0x%08x is greater than" - " MaxCmdSN: 0x%08x, protocol error.\n", cmdsn, + " MaxCmdSN: 0x%08x, ignoring.\n", cmdsn, sess->max_cmd_sn); - ret = CMDSN_ERROR_CANNOT_RECOVER; + ret = CMDSN_MAXCMDSN_OVERRUN; } else if (cmdsn == sess->exp_cmd_sn) { sess->exp_cmd_sn++; @@ -313,14 +303,16 @@ int iscsit_sequence_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, ret = CMDSN_HIGHER_THAN_EXP; break; case CMDSN_LOWER_THAN_EXP: + case CMDSN_MAXCMDSN_OVERRUN: + default: cmd->i_state = ISTATE_REMOVE; iscsit_add_cmd_to_immediate_queue(cmd, conn, cmd->i_state); - ret = cmdsn_ret; - break; - default: - reason = ISCSI_REASON_PROTOCOL_ERROR; - reject = true; - ret = cmdsn_ret; + /* + * Existing callers for iscsit_sequence_cmd() will silently + * ignore commands with CMDSN_LOWER_THAN_EXP, so force this + * return for CMDSN_MAXCMDSN_OVERRUN as well.. + */ + ret = CMDSN_LOWER_THAN_EXP; break; } mutex_unlock(&conn->sess->cmdsn_mutex); @@ -689,6 +681,16 @@ void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *conn) void iscsit_release_cmd(struct iscsi_cmd *cmd) { + struct iscsi_session *sess; + struct se_cmd *se_cmd = &cmd->se_cmd; + + if (cmd->conn) + sess = cmd->conn->sess; + else + sess = cmd->sess; + + BUG_ON(!sess || !sess->se_sess); + kfree(cmd->buf_ptr); kfree(cmd->pdu_list); kfree(cmd->seq_list); @@ -696,8 +698,9 @@ void iscsit_release_cmd(struct iscsi_cmd *cmd) kfree(cmd->iov_data); kfree(cmd->text_in_ptr); - kmem_cache_free(lio_cmd_cache, cmd); + percpu_ida_free(&sess->se_sess->sess_tag_pool, se_cmd->map_tag); } +EXPORT_SYMBOL(iscsit_release_cmd); static void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool scsi_cmd, bool check_queues) @@ -735,7 +738,7 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) * Fallthrough */ case ISCSI_OP_SCSI_TMFUNC: - rc = transport_generic_free_cmd(&cmd->se_cmd, 1); + rc = transport_generic_free_cmd(&cmd->se_cmd, shutdown); if (!rc && shutdown && se_cmd && se_cmd->se_sess) { __iscsit_free_cmd(cmd, true, shutdown); target_put_sess_cmd(se_cmd->se_sess, se_cmd); @@ -751,7 +754,7 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) se_cmd = &cmd->se_cmd; __iscsit_free_cmd(cmd, true, shutdown); - rc = transport_generic_free_cmd(&cmd->se_cmd, 1); + rc = transport_generic_free_cmd(&cmd->se_cmd, shutdown); if (!rc && shutdown && se_cmd->se_sess) { __iscsit_free_cmd(cmd, true, shutdown); target_put_sess_cmd(se_cmd->se_sess, se_cmd); @@ -761,7 +764,7 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) /* Fall-through */ default: __iscsit_free_cmd(cmd, false, shutdown); - cmd->release_cmd(cmd); + iscsit_release_cmd(cmd); break; } } @@ -979,7 +982,7 @@ static void iscsit_handle_nopin_response_timeout(unsigned long data) tiqn->sess_err_stats.last_sess_failure_type = ISCSI_SESS_ERR_CXN_TIMEOUT; tiqn->sess_err_stats.cxn_timeout_errors++; - conn->sess->conn_timeout_errors++; + atomic_long_inc(&conn->sess->conn_timeout_errors); spin_unlock_bh(&tiqn->sess_err_stats.lock); } } |