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usr/config.h
323 строки
9 KB
Iliya Peregoudov
Add tcp.congestion_control configuration option (#520)
20 янв 2026, 21:17
Не верифицирован
20 янв 2026, 21:17
82ebd51
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/* * iSCSI Configuration * * Copyright (C) 2002 Cisco Systems, Inc. * maintained by linux-iscsi-devel@lists.sourceforge.net * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * See the file COPYING included with this distribution for more details. */ #ifndef CONFIG_H #define CONFIG_H #include <netdb.h> #include <net/if.h> #include "types.h" #include "auth.h" /* for the username and password sizes */ #include "list.h" #include "iscsi_proto.h" #include "iscsi_net_util.h" /* ISIDs now have a typed naming authority in them. We use an OUI */ #define DRIVER_ISID_0 0x00 #define DRIVER_ISID_1 0x02 #define DRIVER_ISID_2 0x3D /* number of possible connections per session */ #define ISCSI_CONN_MAX 1 /* max len of interface */ #define ISCSI_MAX_IFACE_LEN 65 /* max len of congestion control */ #define CONGESTION_STR_MAX_LEN 16 /* the following structures store the options set in the config file. * a structure is defined for each logically-related group of options. * if you are adding a new option, first check if it should belong * to one of the existing groups. If it does, add it. If not, define * a new structure. */ /* all authentication-related options should be added to this structure. * this structure is per-session, and can be configured * by TargetName but not Subnet. */ struct iscsi_auth_config { unsigned int authmethod; char username[AUTH_STR_MAX_LEN]; unsigned char password[AUTH_STR_MAX_LEN]; unsigned int password_length; char username_in[AUTH_STR_MAX_LEN]; unsigned char password_in[AUTH_STR_MAX_LEN]; unsigned int password_in_length; unsigned int chap_algs[AUTH_CHAP_ALG_MAX_COUNT]; }; /* all per-connection timeouts go in this structure. * this structure is per-portal, and can be configured * both by TargetName and Subnet. */ struct iscsi_connection_timeout_config { int login_timeout; int logout_timeout; int auth_timeout; int active_timeout; int noop_out_interval; int noop_out_timeout; }; /* all per-session timeouts go in this structure. * this structure is per-session, and can be configured * by TargetName but not by Subnet. */ struct iscsi_session_timeout_config { int replacement_timeout; }; /* all error handling timeouts go in this structure. * this structure is per-portal, and can be configured * both by TargetName and Subnet. */ struct iscsi_error_timeout_config { int abort_timeout; int host_reset_timeout; int lu_reset_timeout; int tgt_reset_timeout; }; /* all TCP options go in this structure. * this structure is per-portal, and can be configured * both by TargetName and Subnet. */ struct iscsi_tcp_config { int window_size; int type_of_service; /* try to set IP TOS bits */ char congestion_control[CONGESTION_STR_MAX_LEN]; }; struct iscsi_conn_operational_config { int MaxRecvDataSegmentLength; int MaxXmitDataSegmentLength; int HeaderDigest; int DataDigest; int IFMarker; int OFMarker; }; /* all iSCSI operational params go in this structure. * this structure is per-portal, and can be configured * both by TargetName and Subnet. */ struct iscsi_session_operational_config { int DataPDUInOrder; int DataSequenceInOrder; int protocol; int InitialR2T; int ImmediateData; int FirstBurstLength; int MaxBurstLength; int DefaultTime2Wait; int DefaultTime2Retain; int MaxConnections; int MaxOutstandingR2T; int ERL; int FastAbort; }; #define CONFIG_DIGEST_NEVER 0 #define CONFIG_DIGEST_ALWAYS 1 #define CONFIG_DIGEST_PREFER_ON 2 #define CONFIG_DIGEST_PREFER_OFF 3 struct iscsi_sendtargets_config { int reopen_max; int use_discoveryd; int discoveryd_poll_inval; struct iscsi_auth_config auth; struct iscsi_connection_timeout_config conn_timeo; struct iscsi_conn_operational_config conn_conf; struct iscsi_session_operational_config session_conf; }; struct iscsi_isns_config { int use_discoveryd; int discoveryd_poll_inval; }; typedef enum iscsi_startup { ISCSI_STARTUP_MANUAL, ISCSI_STARTUP_AUTOMATIC, ISCSI_STARTUP_ONBOOT, } iscsi_startup_e; typedef enum discovery_type { DISCOVERY_TYPE_SENDTARGETS, DISCOVERY_TYPE_ISNS, DISCOVERY_TYPE_OFFLOAD_SENDTARGETS, DISCOVERY_TYPE_STATIC, DISCOVERY_TYPE_FW, } discovery_type_e; typedef struct conn_rec { iscsi_startup_e startup; char address[NI_MAXHOST]; int port; struct iscsi_tcp_config tcp; struct iscsi_connection_timeout_config timeo; struct iscsi_conn_operational_config iscsi; } conn_rec_t; typedef struct session_rec { int initial_cmdsn; int reopen_max; int xmit_thread_priority; int cmds_max; int queue_depth; int initial_login_retry_max; int nr_sessions; int scan; struct iscsi_auth_config auth; struct iscsi_session_timeout_config timeo; struct iscsi_error_timeout_config err_timeo; struct iscsi_session_operational_config iscsi; struct session_info *info; unsigned sid; /* * This is a flag passed to iscsid. If set, multiple sessions are * allowed to be initiated on this record */ unsigned char multiple; char boot_root[BOOT_NAME_MAXLEN]; char boot_nic[BOOT_NAME_MAXLEN]; char boot_target[BOOT_NAME_MAXLEN]; int sess_reopen_log_freq; } session_rec_t; #define ISCSI_TRANSPORT_NAME_MAXLEN 16 #define ISCSI_MAX_STR_LEN 80 typedef struct iface_rec { struct list_head list; /* iscsi iface record name */ char name[ISCSI_MAX_IFACE_LEN]; uint32_t iface_num; /* network layer iface name (eth0) */ char netdev[IFNAMSIZ]; char ipaddress[NI_MAXHOST]; char subnet_mask[NI_MAXHOST]; char gateway[NI_MAXHOST]; char bootproto[ISCSI_MAX_STR_LEN]; char ipv6_linklocal[NI_MAXHOST]; char ipv6_router[NI_MAXHOST]; char ipv6_autocfg[NI_MAXHOST]; char linklocal_autocfg[NI_MAXHOST]; char router_autocfg[NI_MAXHOST]; uint8_t prefix_len; uint16_t vlan_id; uint8_t vlan_priority; char vlan_state[ISCSI_MAX_STR_LEN]; char state[ISCSI_MAX_STR_LEN]; /* 0 = disable, * 1 = enable */ uint16_t mtu; uint16_t port; char delayed_ack[ISCSI_MAX_STR_LEN]; char nagle[ISCSI_MAX_STR_LEN]; char tcp_wsf_state[ISCSI_MAX_STR_LEN]; uint8_t tcp_wsf; uint8_t tcp_timer_scale; char tcp_timestamp[ISCSI_MAX_STR_LEN]; char dhcp_dns[ISCSI_MAX_STR_LEN]; char dhcp_slp_da[ISCSI_MAX_STR_LEN]; char tos_state[ISCSI_MAX_STR_LEN]; uint8_t tos; char gratuitous_arp[ISCSI_MAX_STR_LEN]; char dhcp_alt_client_id_state[ISCSI_MAX_STR_LEN]; char dhcp_alt_client_id[ISCSI_MAX_STR_LEN]; char dhcp_req_vendor_id_state[ISCSI_MAX_STR_LEN]; char dhcp_vendor_id_state[ISCSI_MAX_STR_LEN]; char dhcp_vendor_id[ISCSI_MAX_STR_LEN]; char dhcp_learn_iqn[ISCSI_MAX_STR_LEN]; char fragmentation[ISCSI_MAX_STR_LEN]; char incoming_forwarding[ISCSI_MAX_STR_LEN]; uint8_t ttl; char gratuitous_neighbor_adv[ISCSI_MAX_STR_LEN]; char redirect[ISCSI_MAX_STR_LEN]; char mld[ISCSI_MAX_STR_LEN]; uint32_t flow_label; uint32_t traffic_class; uint8_t hop_limit; uint32_t nd_reachable_tmo; uint32_t nd_rexmit_time; uint32_t nd_stale_tmo; uint8_t dup_addr_detect_cnt; uint32_t router_adv_link_mtu; uint16_t def_task_mgmt_tmo; char header_digest[ISCSI_MAX_STR_LEN]; char data_digest[ISCSI_MAX_STR_LEN]; char immediate_data[ISCSI_MAX_STR_LEN]; char initial_r2t[ISCSI_MAX_STR_LEN]; char data_seq_inorder[ISCSI_MAX_STR_LEN]; char data_pdu_inorder[ISCSI_MAX_STR_LEN]; uint8_t erl; uint32_t max_recv_dlength; uint32_t first_burst_len; uint16_t max_out_r2t; uint32_t max_burst_len; char chap_auth[ISCSI_MAX_STR_LEN]; char bidi_chap[ISCSI_MAX_STR_LEN]; char strict_login_comp[ISCSI_MAX_STR_LEN]; char discovery_auth[ISCSI_MAX_STR_LEN]; char discovery_logout[ISCSI_MAX_STR_LEN]; char port_state[ISCSI_MAX_STR_LEN]; char port_speed[ISCSI_MAX_STR_LEN]; /* * TODO: we may have to make this bigger and interconnect * specific for infiniband */ char hwaddress[ISCSI_HWADDRESS_BUF_SIZE]; char transport_name[ISCSI_TRANSPORT_NAME_MAXLEN]; /* * This is only used for boot now, but the iser guys * can use this for their virtualization idea. */ char alias[TARGET_NAME_MAXLEN + 1]; char iname[TARGET_NAME_MAXLEN + 1]; } iface_rec_t; typedef struct node_rec { struct list_head list; char name[TARGET_NAME_MAXLEN]; int tpgt; iscsi_startup_e startup; int leading_login; session_rec_t session; conn_rec_t conn[ISCSI_CONN_MAX]; iface_rec_t iface; discovery_type_e disc_type; char disc_address[NI_MAXHOST]; int disc_port; } node_rec_t; typedef struct discovery_rec { iscsi_startup_e startup; discovery_type_e type; char address[NI_MAXHOST]; int port; int iscsid_req_tmo; union { struct iscsi_sendtargets_config sendtargets; struct iscsi_isns_config isns; } u; } discovery_rec_t; #endif /* CONFIG_H */