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linux/include/scsi/iscsi_if.h
Frank Mayhar cc6b32ee3b scsi: iscsi: Add support for asynchronous iSCSI session destruction 
iSCSI session destruction can be arbitrarily slow, since it might require
network operations and serialization inside the SCSI layer.  This patch
adds a new user event to trigger the destruction work asynchronously,
releasing the rx_queue_mutex as soon as the operation is queued and before
it is performed.  This change allows other operations to run in other
sessions in the meantime, removing one of the major iSCSI bottlenecks for
us.

To prevent the session from being used after the destruction request, we
remove it immediately from the sesslist. This simplifies the locking
required during the asynchronous removal.

Link: https://lore.kernel.org/r/20200227195945.761719-1-krisman@collabora.com
Co-developed-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Co-developed-by: Khazhismel Kumykov <khazhy@google.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Frank Mayhar <fmayhar@google.com>
Signed-off-by: Khazhismel Kumykov <khazhy@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-11 23:07:57 -04:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
*
* Copyright (C) 2005 Dmitry Yusupov
* Copyright (C) 2005 Alex Aizman
* maintained by open-iscsi@googlegroups.com
*/
#ifndef ISCSI_IF_H
#define ISCSI_IF_H
#include <scsi/iscsi_proto.h>
#include <linux/in.h>
#include <linux/in6.h>
#define ISCSI_NL_GRP_ISCSID 1
#define ISCSI_NL_GRP_UIP 2
#define UEVENT_BASE 10
#define KEVENT_BASE 100
#define ISCSI_ERR_BASE 1000
enum iscsi_uevent_e {
ISCSI_UEVENT_UNKNOWN = 0,
/* down events */
ISCSI_UEVENT_CREATE_SESSION = UEVENT_BASE + 1,
ISCSI_UEVENT_DESTROY_SESSION = UEVENT_BASE + 2,
ISCSI_UEVENT_CREATE_CONN = UEVENT_BASE + 3,
ISCSI_UEVENT_DESTROY_CONN = UEVENT_BASE + 4,
ISCSI_UEVENT_BIND_CONN = UEVENT_BASE + 5,
ISCSI_UEVENT_SET_PARAM = UEVENT_BASE + 6,
ISCSI_UEVENT_START_CONN = UEVENT_BASE + 7,
ISCSI_UEVENT_STOP_CONN = UEVENT_BASE + 8,
ISCSI_UEVENT_SEND_PDU = UEVENT_BASE + 9,
ISCSI_UEVENT_GET_STATS = UEVENT_BASE + 10,
ISCSI_UEVENT_GET_PARAM = UEVENT_BASE + 11,
ISCSI_UEVENT_TRANSPORT_EP_CONNECT = UEVENT_BASE + 12,
ISCSI_UEVENT_TRANSPORT_EP_POLL = UEVENT_BASE + 13,
ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT = UEVENT_BASE + 14,
ISCSI_UEVENT_TGT_DSCVR = UEVENT_BASE + 15,
ISCSI_UEVENT_SET_HOST_PARAM = UEVENT_BASE + 16,
ISCSI_UEVENT_UNBIND_SESSION = UEVENT_BASE + 17,
ISCSI_UEVENT_CREATE_BOUND_SESSION = UEVENT_BASE + 18,
ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST = UEVENT_BASE + 19,
ISCSI_UEVENT_PATH_UPDATE = UEVENT_BASE + 20,
ISCSI_UEVENT_SET_IFACE_PARAMS = UEVENT_BASE + 21,
ISCSI_UEVENT_PING = UEVENT_BASE + 22,
ISCSI_UEVENT_GET_CHAP = UEVENT_BASE + 23,
ISCSI_UEVENT_DELETE_CHAP = UEVENT_BASE + 24,
ISCSI_UEVENT_SET_FLASHNODE_PARAMS = UEVENT_BASE + 25,
ISCSI_UEVENT_NEW_FLASHNODE = UEVENT_BASE + 26,
ISCSI_UEVENT_DEL_FLASHNODE = UEVENT_BASE + 27,
ISCSI_UEVENT_LOGIN_FLASHNODE = UEVENT_BASE + 28,
ISCSI_UEVENT_LOGOUT_FLASHNODE = UEVENT_BASE + 29,
ISCSI_UEVENT_LOGOUT_FLASHNODE_SID = UEVENT_BASE + 30,
ISCSI_UEVENT_SET_CHAP = UEVENT_BASE + 31,
ISCSI_UEVENT_GET_HOST_STATS = UEVENT_BASE + 32,
ISCSI_UEVENT_DESTROY_SESSION_ASYNC = UEVENT_BASE + 33,
/* up events */
ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
ISCSI_KEVENT_IF_ERROR = KEVENT_BASE + 3,
ISCSI_KEVENT_DESTROY_SESSION = KEVENT_BASE + 4,
ISCSI_KEVENT_UNBIND_SESSION = KEVENT_BASE + 5,
ISCSI_KEVENT_CREATE_SESSION = KEVENT_BASE + 6,
ISCSI_KEVENT_PATH_REQ = KEVENT_BASE + 7,
ISCSI_KEVENT_IF_DOWN = KEVENT_BASE + 8,
ISCSI_KEVENT_CONN_LOGIN_STATE = KEVENT_BASE + 9,
ISCSI_KEVENT_HOST_EVENT = KEVENT_BASE + 10,
ISCSI_KEVENT_PING_COMP = KEVENT_BASE + 11,
};
enum iscsi_tgt_dscvr {
ISCSI_TGT_DSCVR_SEND_TARGETS = 1,
ISCSI_TGT_DSCVR_ISNS = 2,
ISCSI_TGT_DSCVR_SLP = 3,
};
enum iscsi_host_event_code {
ISCSI_EVENT_LINKUP = 1,
ISCSI_EVENT_LINKDOWN,
/* must always be last */
ISCSI_EVENT_MAX,
};
struct iscsi_uevent {
uint32_t type; /* k/u events type */
uint32_t iferror; /* carries interface or resource errors */
uint64_t transport_handle;
union {
/* messages u -> k */
struct msg_create_session {
uint32_t initial_cmdsn;
uint16_t cmds_max;
uint16_t queue_depth;
} c_session;
struct msg_create_bound_session {
uint64_t ep_handle;
uint32_t initial_cmdsn;
uint16_t cmds_max;
uint16_t queue_depth;
} c_bound_session;
struct msg_destroy_session {
uint32_t sid;
} d_session;
struct msg_create_conn {
uint32_t sid;
uint32_t cid;
} c_conn;
struct msg_bind_conn {
uint32_t sid;
uint32_t cid;
uint64_t transport_eph;
uint32_t is_leading;
} b_conn;
struct msg_destroy_conn {
uint32_t sid;
uint32_t cid;
} d_conn;
struct msg_send_pdu {
uint32_t sid;
uint32_t cid;
uint32_t hdr_size;
uint32_t data_size;
} send_pdu;
struct msg_set_param {
uint32_t sid;
uint32_t cid;
uint32_t param; /* enum iscsi_param */
uint32_t len;
} set_param;
struct msg_start_conn {
uint32_t sid;
uint32_t cid;
} start_conn;
struct msg_stop_conn {
uint32_t sid;
uint32_t cid;
uint64_t conn_handle;
uint32_t flag;
} stop_conn;
struct msg_get_stats {
uint32_t sid;
uint32_t cid;
} get_stats;
struct msg_transport_connect {
uint32_t non_blocking;
} ep_connect;
struct msg_transport_connect_through_host {
uint32_t host_no;
uint32_t non_blocking;
} ep_connect_through_host;
struct msg_transport_poll {
uint64_t ep_handle;
uint32_t timeout_ms;
} ep_poll;
struct msg_transport_disconnect {
uint64_t ep_handle;
} ep_disconnect;
struct msg_tgt_dscvr {
enum iscsi_tgt_dscvr type;
uint32_t host_no;
/*
* enable = 1 to establish a new connection
* with the server. enable = 0 to disconnect
* from the server. Used primarily to switch
* from one iSNS server to another.
*/
uint32_t enable;
} tgt_dscvr;
struct msg_set_host_param {
uint32_t host_no;
uint32_t param; /* enum iscsi_host_param */
uint32_t len;
} set_host_param;
struct msg_set_path {
uint32_t host_no;
} set_path;
struct msg_set_iface_params {
uint32_t host_no;
uint32_t count;
} set_iface_params;
struct msg_iscsi_ping {
uint32_t host_no;
uint32_t iface_num;
uint32_t iface_type;
uint32_t payload_size;
uint32_t pid; /* unique ping id associated
with each ping request */
} iscsi_ping;
struct msg_get_chap {
uint32_t host_no;
uint32_t num_entries; /* number of CHAP entries
* on request, number of
* valid CHAP entries on
* response */
uint16_t chap_tbl_idx;
} get_chap;
struct msg_delete_chap {
uint32_t host_no;
uint16_t chap_tbl_idx;
} delete_chap;
struct msg_set_flashnode_param {
uint32_t host_no;
uint32_t flashnode_idx;
uint32_t count;
} set_flashnode;
struct msg_new_flashnode {
uint32_t host_no;
uint32_t len;
} new_flashnode;
struct msg_del_flashnode {
uint32_t host_no;
uint32_t flashnode_idx;
} del_flashnode;
struct msg_login_flashnode {
uint32_t host_no;
uint32_t flashnode_idx;
} login_flashnode;
struct msg_logout_flashnode {
uint32_t host_no;
uint32_t flashnode_idx;
} logout_flashnode;
struct msg_logout_flashnode_sid {
uint32_t host_no;
uint32_t sid;
} logout_flashnode_sid;
struct msg_get_host_stats {
uint32_t host_no;
} get_host_stats;
} u;
union {
/* messages k -> u */
int retcode;
struct msg_create_session_ret {
uint32_t sid;
uint32_t host_no;
} c_session_ret;
struct msg_create_conn_ret {
uint32_t sid;
uint32_t cid;
} c_conn_ret;
struct msg_unbind_session {
uint32_t sid;
uint32_t host_no;
} unbind_session;
struct msg_recv_req {
uint32_t sid;
uint32_t cid;
uint64_t recv_handle;
} recv_req;
struct msg_conn_login {
uint32_t sid;
uint32_t cid;
uint32_t state; /* enum iscsi_conn_state */
} conn_login;
struct msg_conn_error {
uint32_t sid;
uint32_t cid;
uint32_t error; /* enum iscsi_err */
} connerror;
struct msg_session_destroyed {
uint32_t host_no;
uint32_t sid;
} d_session;
struct msg_transport_connect_ret {
uint64_t handle;
} ep_connect_ret;
struct msg_req_path {
uint32_t host_no;
} req_path;
struct msg_notify_if_down {
uint32_t host_no;
} notify_if_down;
struct msg_host_event {
uint32_t host_no;
uint32_t data_size;
enum iscsi_host_event_code code;
} host_event;
struct msg_ping_comp {
uint32_t host_no;
uint32_t status; /* enum
* iscsi_ping_status_code */
uint32_t pid; /* unique ping id associated
with each ping request */
uint32_t data_size;
} ping_comp;
struct msg_new_flashnode_ret {
uint32_t flashnode_idx;
} new_flashnode_ret;
} r;
} __attribute__ ((aligned (sizeof(uint64_t))));
enum iscsi_param_type {
ISCSI_PARAM, /* iscsi_param (session, conn, target, LU) */
ISCSI_HOST_PARAM, /* iscsi_host_param */
ISCSI_NET_PARAM, /* iscsi_net_param */
ISCSI_FLASHNODE_PARAM, /* iscsi_flashnode_param */
ISCSI_CHAP_PARAM, /* iscsi_chap_param */
ISCSI_IFACE_PARAM, /* iscsi_iface_param */
};
/* structure for minimalist usecase */
struct iscsi_param_info {
uint32_t len; /* Actual length of the param value */
uint16_t param; /* iscsi param */
uint8_t value[]; /* length sized value follows */
} __packed;
struct iscsi_iface_param_info {
uint32_t iface_num; /* iface number, 0 - n */
uint32_t len; /* Actual length of the param */
uint16_t param; /* iscsi param value */
uint8_t iface_type; /* IPv4 or IPv6 */
uint8_t param_type; /* iscsi_param_type */
uint8_t value[]; /* length sized value follows */
} __packed;
/*
* To keep the struct iscsi_uevent size the same for userspace code
* compatibility, the main structure for ISCSI_UEVENT_PATH_UPDATE and
* ISCSI_KEVENT_PATH_REQ is defined separately and comes after the
* struct iscsi_uevent in the NETLINK_ISCSI message.
*/
struct iscsi_path {
uint64_t handle;
uint8_t mac_addr[6];
uint8_t mac_addr_old[6];
uint32_t ip_addr_len; /* 4 or 16 */
union {
struct in_addr v4_addr;
struct in6_addr v6_addr;
} src;
union {
struct in_addr v4_addr;
struct in6_addr v6_addr;
} dst;
uint16_t vlan_id;
uint16_t pmtu;
} __attribute__ ((aligned (sizeof(uint64_t))));
/* iscsi iface enabled/disabled setting */
#define ISCSI_IFACE_DISABLE 0x01
#define ISCSI_IFACE_ENABLE 0x02
/* ipv4 bootproto */
#define ISCSI_BOOTPROTO_STATIC 0x01
#define ISCSI_BOOTPROTO_DHCP 0x02
/* ipv6 addr autoconfig type */
#define ISCSI_IPV6_AUTOCFG_DISABLE 0x01
#define ISCSI_IPV6_AUTOCFG_ND_ENABLE 0x02
#define ISCSI_IPV6_AUTOCFG_DHCPV6_ENABLE 0x03
/* ipv6 link local addr type */
#define ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE 0x01
#define ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE 0x02
/* ipv6 router addr type */
#define ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE 0x01
#define ISCSI_IPV6_ROUTER_AUTOCFG_DISABLE 0x02
#define ISCSI_IFACE_TYPE_IPV4 0x01
#define ISCSI_IFACE_TYPE_IPV6 0x02
#define ISCSI_MAX_VLAN_ID 4095
#define ISCSI_MAX_VLAN_PRIORITY 7
/* iscsi vlan enable/disabled setting */
#define ISCSI_VLAN_DISABLE 0x01
#define ISCSI_VLAN_ENABLE 0x02
/* iscsi generic enable/disabled setting for various features */
#define ISCSI_NET_PARAM_DISABLE 0x01
#define ISCSI_NET_PARAM_ENABLE 0x02
/* iSCSI network params */
enum iscsi_net_param {
ISCSI_NET_PARAM_IPV4_ADDR = 1,
ISCSI_NET_PARAM_IPV4_SUBNET,
ISCSI_NET_PARAM_IPV4_GW,
ISCSI_NET_PARAM_IPV4_BOOTPROTO,
ISCSI_NET_PARAM_MAC,
ISCSI_NET_PARAM_IPV6_LINKLOCAL,
ISCSI_NET_PARAM_IPV6_ADDR,
ISCSI_NET_PARAM_IPV6_ROUTER,
ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG,
ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG,
ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG,
ISCSI_NET_PARAM_IFACE_ENABLE,
ISCSI_NET_PARAM_VLAN_ID,
ISCSI_NET_PARAM_VLAN_PRIORITY,
ISCSI_NET_PARAM_VLAN_ENABLED,
ISCSI_NET_PARAM_VLAN_TAG,
ISCSI_NET_PARAM_IFACE_TYPE,
ISCSI_NET_PARAM_IFACE_NAME,
ISCSI_NET_PARAM_MTU,
ISCSI_NET_PARAM_PORT,
ISCSI_NET_PARAM_IPADDR_STATE,
ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE,
ISCSI_NET_PARAM_IPV6_ROUTER_STATE,
ISCSI_NET_PARAM_DELAYED_ACK_EN,
ISCSI_NET_PARAM_TCP_NAGLE_DISABLE,
ISCSI_NET_PARAM_TCP_WSF_DISABLE,
ISCSI_NET_PARAM_TCP_WSF,
ISCSI_NET_PARAM_TCP_TIMER_SCALE,
ISCSI_NET_PARAM_TCP_TIMESTAMP_EN,
ISCSI_NET_PARAM_CACHE_ID,
ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN,
ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN,
ISCSI_NET_PARAM_IPV4_TOS_EN,
ISCSI_NET_PARAM_IPV4_TOS,
ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN,
ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN,
ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID,
ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN,
ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN,
ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID,
ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN,
ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE,
ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN,
ISCSI_NET_PARAM_IPV4_TTL,
ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN,
ISCSI_NET_PARAM_IPV6_MLD_EN,
ISCSI_NET_PARAM_IPV6_FLOW_LABEL,
ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS,
ISCSI_NET_PARAM_IPV6_HOP_LIMIT,
ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO,
ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME,
ISCSI_NET_PARAM_IPV6_ND_STALE_TMO,
ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT,
ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU,
ISCSI_NET_PARAM_REDIRECT_EN,
};
enum iscsi_ipaddress_state {
ISCSI_IPDDRESS_STATE_UNCONFIGURED,
ISCSI_IPDDRESS_STATE_ACQUIRING,
ISCSI_IPDDRESS_STATE_TENTATIVE,
ISCSI_IPDDRESS_STATE_VALID,
ISCSI_IPDDRESS_STATE_DISABLING,
ISCSI_IPDDRESS_STATE_INVALID,
ISCSI_IPDDRESS_STATE_DEPRECATED,
};
enum iscsi_router_state {
ISCSI_ROUTER_STATE_UNKNOWN,
ISCSI_ROUTER_STATE_ADVERTISED,
ISCSI_ROUTER_STATE_MANUAL,
ISCSI_ROUTER_STATE_STALE,
};
/* iSCSI specific settings params for iface */
enum iscsi_iface_param {
ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO,
ISCSI_IFACE_PARAM_HDRDGST_EN,
ISCSI_IFACE_PARAM_DATADGST_EN,
ISCSI_IFACE_PARAM_IMM_DATA_EN,
ISCSI_IFACE_PARAM_INITIAL_R2T_EN,
ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN,
ISCSI_IFACE_PARAM_PDU_INORDER_EN,
ISCSI_IFACE_PARAM_ERL,
ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH,
ISCSI_IFACE_PARAM_FIRST_BURST,
ISCSI_IFACE_PARAM_MAX_R2T,
ISCSI_IFACE_PARAM_MAX_BURST,
ISCSI_IFACE_PARAM_CHAP_AUTH_EN,
ISCSI_IFACE_PARAM_BIDI_CHAP_EN,
ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL,
ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN,
ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN,
ISCSI_IFACE_PARAM_INITIATOR_NAME,
};
enum iscsi_conn_state {
ISCSI_CONN_STATE_FREE,
ISCSI_CONN_STATE_XPT_WAIT,
ISCSI_CONN_STATE_IN_LOGIN,
ISCSI_CONN_STATE_LOGGED_IN,
ISCSI_CONN_STATE_IN_LOGOUT,
ISCSI_CONN_STATE_LOGOUT_REQUESTED,
ISCSI_CONN_STATE_CLEANUP_WAIT,
};
/*
* Common error codes
*/
enum iscsi_err {
ISCSI_OK = 0,
ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16,
ISCSI_ERR_NO_SCSI_CMD = ISCSI_ERR_BASE + 17,
ISCSI_ERR_INVALID_HOST = ISCSI_ERR_BASE + 18,
ISCSI_ERR_XMIT_FAILED = ISCSI_ERR_BASE + 19,
ISCSI_ERR_TCP_CONN_CLOSE = ISCSI_ERR_BASE + 20,
ISCSI_ERR_SCSI_EH_SESSION_RST = ISCSI_ERR_BASE + 21,
ISCSI_ERR_NOP_TIMEDOUT = ISCSI_ERR_BASE + 22,
};
/*
* iSCSI Parameters (RFC3720)
*/
enum iscsi_param {
/* passed in using netlink set param */
ISCSI_PARAM_MAX_RECV_DLENGTH,
ISCSI_PARAM_MAX_XMIT_DLENGTH,
ISCSI_PARAM_HDRDGST_EN,
ISCSI_PARAM_DATADGST_EN,
ISCSI_PARAM_INITIAL_R2T_EN,
ISCSI_PARAM_MAX_R2T,
ISCSI_PARAM_IMM_DATA_EN,
ISCSI_PARAM_FIRST_BURST,
ISCSI_PARAM_MAX_BURST,
ISCSI_PARAM_PDU_INORDER_EN,
ISCSI_PARAM_DATASEQ_INORDER_EN,
ISCSI_PARAM_ERL,
ISCSI_PARAM_IFMARKER_EN,
ISCSI_PARAM_OFMARKER_EN,
ISCSI_PARAM_EXP_STATSN,
ISCSI_PARAM_TARGET_NAME,
ISCSI_PARAM_TPGT,
ISCSI_PARAM_PERSISTENT_ADDRESS,
ISCSI_PARAM_PERSISTENT_PORT,
ISCSI_PARAM_SESS_RECOVERY_TMO,
/* passed in through bind conn using transport_fd */
ISCSI_PARAM_CONN_PORT,
ISCSI_PARAM_CONN_ADDRESS,
ISCSI_PARAM_USERNAME,
ISCSI_PARAM_USERNAME_IN,
ISCSI_PARAM_PASSWORD,
ISCSI_PARAM_PASSWORD_IN,
ISCSI_PARAM_FAST_ABORT,
ISCSI_PARAM_ABORT_TMO,
ISCSI_PARAM_LU_RESET_TMO,
ISCSI_PARAM_HOST_RESET_TMO,
ISCSI_PARAM_PING_TMO,
ISCSI_PARAM_RECV_TMO,
ISCSI_PARAM_IFACE_NAME,
ISCSI_PARAM_ISID,
ISCSI_PARAM_INITIATOR_NAME,
ISCSI_PARAM_TGT_RESET_TMO,
ISCSI_PARAM_TARGET_ALIAS,
ISCSI_PARAM_CHAP_IN_IDX,
ISCSI_PARAM_CHAP_OUT_IDX,
ISCSI_PARAM_BOOT_ROOT,
ISCSI_PARAM_BOOT_NIC,
ISCSI_PARAM_BOOT_TARGET,
ISCSI_PARAM_AUTO_SND_TGT_DISABLE,
ISCSI_PARAM_DISCOVERY_SESS,
ISCSI_PARAM_PORTAL_TYPE,
ISCSI_PARAM_CHAP_AUTH_EN,
ISCSI_PARAM_DISCOVERY_LOGOUT_EN,
ISCSI_PARAM_BIDI_CHAP_EN,
ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL,
ISCSI_PARAM_DEF_TIME2WAIT,
ISCSI_PARAM_DEF_TIME2RETAIN,
ISCSI_PARAM_MAX_SEGMENT_SIZE,
ISCSI_PARAM_STATSN,
ISCSI_PARAM_KEEPALIVE_TMO,
ISCSI_PARAM_LOCAL_PORT,
ISCSI_PARAM_TSID,
ISCSI_PARAM_DEF_TASKMGMT_TMO,
ISCSI_PARAM_TCP_TIMESTAMP_STAT,
ISCSI_PARAM_TCP_WSF_DISABLE,
ISCSI_PARAM_TCP_NAGLE_DISABLE,
ISCSI_PARAM_TCP_TIMER_SCALE,
ISCSI_PARAM_TCP_TIMESTAMP_EN,
ISCSI_PARAM_TCP_XMIT_WSF,
ISCSI_PARAM_TCP_RECV_WSF,
ISCSI_PARAM_IP_FRAGMENT_DISABLE,
ISCSI_PARAM_IPV4_TOS,
ISCSI_PARAM_IPV6_TC,
ISCSI_PARAM_IPV6_FLOW_LABEL,
ISCSI_PARAM_IS_FW_ASSIGNED_IPV6,
ISCSI_PARAM_DISCOVERY_PARENT_IDX,
ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
ISCSI_PARAM_LOCAL_IPADDR,
/* must always be last */
ISCSI_PARAM_MAX,
};
/* iSCSI HBA params */
enum iscsi_host_param {
ISCSI_HOST_PARAM_HWADDRESS,
ISCSI_HOST_PARAM_INITIATOR_NAME,
ISCSI_HOST_PARAM_NETDEV_NAME,
ISCSI_HOST_PARAM_IPADDRESS,
ISCSI_HOST_PARAM_PORT_STATE,
ISCSI_HOST_PARAM_PORT_SPEED,
ISCSI_HOST_PARAM_MAX,
};
/* portal type */
#define PORTAL_TYPE_IPV4 "ipv4"
#define PORTAL_TYPE_IPV6 "ipv6"
/* iSCSI Flash Target params */
enum iscsi_flashnode_param {
ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6,
ISCSI_FLASHNODE_PORTAL_TYPE,
ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE,
ISCSI_FLASHNODE_DISCOVERY_SESS,
ISCSI_FLASHNODE_ENTRY_EN,
ISCSI_FLASHNODE_HDR_DGST_EN,
ISCSI_FLASHNODE_DATA_DGST_EN,
ISCSI_FLASHNODE_IMM_DATA_EN,
ISCSI_FLASHNODE_INITIAL_R2T_EN,
ISCSI_FLASHNODE_DATASEQ_INORDER,
ISCSI_FLASHNODE_PDU_INORDER,
ISCSI_FLASHNODE_CHAP_AUTH_EN,
ISCSI_FLASHNODE_SNACK_REQ_EN,
ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN,
ISCSI_FLASHNODE_BIDI_CHAP_EN,
/* make authentication for discovery sessions optional */
ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL,
ISCSI_FLASHNODE_ERL,
ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT,
ISCSI_FLASHNODE_TCP_NAGLE_DISABLE,
ISCSI_FLASHNODE_TCP_WSF_DISABLE,
ISCSI_FLASHNODE_TCP_TIMER_SCALE,
ISCSI_FLASHNODE_TCP_TIMESTAMP_EN,
ISCSI_FLASHNODE_IP_FRAG_DISABLE,
ISCSI_FLASHNODE_MAX_RECV_DLENGTH,
ISCSI_FLASHNODE_MAX_XMIT_DLENGTH,
ISCSI_FLASHNODE_FIRST_BURST,
ISCSI_FLASHNODE_DEF_TIME2WAIT,
ISCSI_FLASHNODE_DEF_TIME2RETAIN,
ISCSI_FLASHNODE_MAX_R2T,
ISCSI_FLASHNODE_KEEPALIVE_TMO,
ISCSI_FLASHNODE_ISID,
ISCSI_FLASHNODE_TSID,
ISCSI_FLASHNODE_PORT,
ISCSI_FLASHNODE_MAX_BURST,
ISCSI_FLASHNODE_DEF_TASKMGMT_TMO,
ISCSI_FLASHNODE_IPADDR,
ISCSI_FLASHNODE_ALIAS,
ISCSI_FLASHNODE_REDIRECT_IPADDR,
ISCSI_FLASHNODE_MAX_SEGMENT_SIZE,
ISCSI_FLASHNODE_LOCAL_PORT,
ISCSI_FLASHNODE_IPV4_TOS,
ISCSI_FLASHNODE_IPV6_TC,
ISCSI_FLASHNODE_IPV6_FLOW_LABEL,
ISCSI_FLASHNODE_NAME,
ISCSI_FLASHNODE_TPGT,
ISCSI_FLASHNODE_LINK_LOCAL_IPV6,
ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX,
ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE,
ISCSI_FLASHNODE_TCP_XMIT_WSF,
ISCSI_FLASHNODE_TCP_RECV_WSF,
ISCSI_FLASHNODE_CHAP_IN_IDX,
ISCSI_FLASHNODE_CHAP_OUT_IDX,
ISCSI_FLASHNODE_USERNAME,
ISCSI_FLASHNODE_USERNAME_IN,
ISCSI_FLASHNODE_PASSWORD,
ISCSI_FLASHNODE_PASSWORD_IN,
ISCSI_FLASHNODE_STATSN,
ISCSI_FLASHNODE_EXP_STATSN,
ISCSI_FLASHNODE_IS_BOOT_TGT,
ISCSI_FLASHNODE_MAX,
};
struct iscsi_flashnode_param_info {
uint32_t len; /* Actual length of the param */
uint16_t param; /* iscsi param value */
uint8_t value[]; /* length sized value follows */
} __packed;
enum iscsi_discovery_parent_type {
ISCSI_DISC_PARENT_UNKNOWN = 0x1,
ISCSI_DISC_PARENT_SENDTGT = 0x2,
ISCSI_DISC_PARENT_ISNS = 0x3,
};
/* iSCSI port Speed */
enum iscsi_port_speed {
ISCSI_PORT_SPEED_UNKNOWN = 0x1,
ISCSI_PORT_SPEED_10MBPS = 0x2,
ISCSI_PORT_SPEED_100MBPS = 0x4,
ISCSI_PORT_SPEED_1GBPS = 0x8,
ISCSI_PORT_SPEED_10GBPS = 0x10,
ISCSI_PORT_SPEED_25GBPS = 0x20,
ISCSI_PORT_SPEED_40GBPS = 0x40,
};
/* iSCSI port state */
enum iscsi_port_state {
ISCSI_PORT_STATE_DOWN = 0x1,
ISCSI_PORT_STATE_UP = 0x2,
};
/* iSCSI PING status/error code */
enum iscsi_ping_status_code {
ISCSI_PING_SUCCESS = 0,
ISCSI_PING_FW_DISABLED = 0x1,
ISCSI_PING_IPADDR_INVALID = 0x2,
ISCSI_PING_LINKLOCAL_IPV6_ADDR_INVALID = 0x3,
ISCSI_PING_TIMEOUT = 0x4,
ISCSI_PING_INVALID_DEST_ADDR = 0x5,
ISCSI_PING_OVERSIZE_PACKET = 0x6,
ISCSI_PING_ICMP_ERROR = 0x7,
ISCSI_PING_MAX_REQ_EXCEEDED = 0x8,
ISCSI_PING_NO_ARP_RECEIVED = 0x9,
};
#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
/*
* These flags presents iSCSI Data-Path capabilities.
*/
#define CAP_RECOVERY_L0 0x1
#define CAP_RECOVERY_L1 0x2
#define CAP_RECOVERY_L2 0x4
#define CAP_MULTI_R2T 0x8
#define CAP_HDRDGST 0x10
#define CAP_DATADGST 0x20
#define CAP_MULTI_CONN 0x40
#define CAP_TEXT_NEGO 0x80
#define CAP_MARKERS 0x100
#define CAP_FW_DB 0x200
#define CAP_SENDTARGETS_OFFLOAD 0x400 /* offload discovery process */
#define CAP_DATA_PATH_OFFLOAD 0x800 /* offload entire IO path */
#define CAP_DIGEST_OFFLOAD 0x1000 /* offload hdr and data digests */
#define CAP_PADDING_OFFLOAD 0x2000 /* offload padding insertion, removal,
and verification */
#define CAP_LOGIN_OFFLOAD 0x4000 /* offload session login */
/*
* These flags describes reason of stop_conn() call
*/
#define STOP_CONN_TERM 0x1
#define STOP_CONN_SUSPEND 0x2
#define STOP_CONN_RECOVER 0x3
#define ISCSI_STATS_CUSTOM_MAX 32
#define ISCSI_STATS_CUSTOM_DESC_MAX 64
struct iscsi_stats_custom {
char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
uint64_t value;
};
/*
* struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
*
* Note: this structure contains counters collected on per-connection basis.
*/
struct iscsi_stats {
/* octets */
uint64_t txdata_octets;
uint64_t rxdata_octets;
/* xmit pdus */
uint32_t noptx_pdus;
uint32_t scsicmd_pdus;
uint32_t tmfcmd_pdus;
uint32_t login_pdus;
uint32_t text_pdus;
uint32_t dataout_pdus;
uint32_t logout_pdus;
uint32_t snack_pdus;
/* recv pdus */
uint32_t noprx_pdus;
uint32_t scsirsp_pdus;
uint32_t tmfrsp_pdus;
uint32_t textrsp_pdus;
uint32_t datain_pdus;
uint32_t logoutrsp_pdus;
uint32_t r2t_pdus;
uint32_t async_pdus;
uint32_t rjt_pdus;
/* errors */
uint32_t digest_err;
uint32_t timeout_err;
/*
* iSCSI Custom Statistics support, i.e. Transport could
* extend existing MIB statistics with its own specific statistics
* up to ISCSI_STATS_CUSTOM_MAX
*/
uint32_t custom_length;
struct iscsi_stats_custom custom[]
__attribute__ ((aligned (sizeof(uint64_t))));
};
enum chap_type_e {
CHAP_TYPE_OUT,
CHAP_TYPE_IN,
};
enum iscsi_chap_param {
ISCSI_CHAP_PARAM_INDEX,
ISCSI_CHAP_PARAM_CHAP_TYPE,
ISCSI_CHAP_PARAM_USERNAME,
ISCSI_CHAP_PARAM_PASSWORD,
ISCSI_CHAP_PARAM_PASSWORD_LEN
};
#define ISCSI_CHAP_AUTH_NAME_MAX_LEN 256
#define ISCSI_CHAP_AUTH_SECRET_MAX_LEN 256
struct iscsi_chap_rec {
uint16_t chap_tbl_idx;
enum chap_type_e chap_type;
char username[ISCSI_CHAP_AUTH_NAME_MAX_LEN];
uint8_t password[ISCSI_CHAP_AUTH_SECRET_MAX_LEN];
uint8_t password_length;
};
#define ISCSI_HOST_STATS_CUSTOM_MAX 32
#define ISCSI_HOST_STATS_CUSTOM_DESC_MAX 64
struct iscsi_host_stats_custom {
char desc[ISCSI_HOST_STATS_CUSTOM_DESC_MAX];
uint64_t value;
};
/* struct iscsi_offload_host_stats: Host statistics,
* Include statistics for MAC, IP, TCP & iSCSI.
*/
struct iscsi_offload_host_stats {
/* MAC */
uint64_t mactx_frames;
uint64_t mactx_bytes;
uint64_t mactx_multicast_frames;
uint64_t mactx_broadcast_frames;
uint64_t mactx_pause_frames;
uint64_t mactx_control_frames;
uint64_t mactx_deferral;
uint64_t mactx_excess_deferral;
uint64_t mactx_late_collision;
uint64_t mactx_abort;
uint64_t mactx_single_collision;
uint64_t mactx_multiple_collision;
uint64_t mactx_collision;
uint64_t mactx_frames_dropped;
uint64_t mactx_jumbo_frames;
uint64_t macrx_frames;
uint64_t macrx_bytes;
uint64_t macrx_unknown_control_frames;
uint64_t macrx_pause_frames;
uint64_t macrx_control_frames;
uint64_t macrx_dribble;
uint64_t macrx_frame_length_error;
uint64_t macrx_jabber;
uint64_t macrx_carrier_sense_error;
uint64_t macrx_frame_discarded;
uint64_t macrx_frames_dropped;
uint64_t mac_crc_error;
uint64_t mac_encoding_error;
uint64_t macrx_length_error_large;
uint64_t macrx_length_error_small;
uint64_t macrx_multicast_frames;
uint64_t macrx_broadcast_frames;
/* IP */
uint64_t iptx_packets;
uint64_t iptx_bytes;
uint64_t iptx_fragments;
uint64_t iprx_packets;
uint64_t iprx_bytes;
uint64_t iprx_fragments;
uint64_t ip_datagram_reassembly;
uint64_t ip_invalid_address_error;
uint64_t ip_error_packets;
uint64_t ip_fragrx_overlap;
uint64_t ip_fragrx_outoforder;
uint64_t ip_datagram_reassembly_timeout;
uint64_t ipv6tx_packets;
uint64_t ipv6tx_bytes;
uint64_t ipv6tx_fragments;
uint64_t ipv6rx_packets;
uint64_t ipv6rx_bytes;
uint64_t ipv6rx_fragments;
uint64_t ipv6_datagram_reassembly;
uint64_t ipv6_invalid_address_error;
uint64_t ipv6_error_packets;
uint64_t ipv6_fragrx_overlap;
uint64_t ipv6_fragrx_outoforder;
uint64_t ipv6_datagram_reassembly_timeout;
/* TCP */
uint64_t tcptx_segments;
uint64_t tcptx_bytes;
uint64_t tcprx_segments;
uint64_t tcprx_byte;
uint64_t tcp_duplicate_ack_retx;
uint64_t tcp_retx_timer_expired;
uint64_t tcprx_duplicate_ack;
uint64_t tcprx_pure_ackr;
uint64_t tcptx_delayed_ack;
uint64_t tcptx_pure_ack;
uint64_t tcprx_segment_error;
uint64_t tcprx_segment_outoforder;
uint64_t tcprx_window_probe;
uint64_t tcprx_window_update;
uint64_t tcptx_window_probe_persist;
/* ECC */
uint64_t ecc_error_correction;
/* iSCSI */
uint64_t iscsi_pdu_tx;
uint64_t iscsi_data_bytes_tx;
uint64_t iscsi_pdu_rx;
uint64_t iscsi_data_bytes_rx;
uint64_t iscsi_io_completed;
uint64_t iscsi_unexpected_io_rx;
uint64_t iscsi_format_error;
uint64_t iscsi_hdr_digest_error;
uint64_t iscsi_data_digest_error;
uint64_t iscsi_sequence_error;
/*
* iSCSI Custom Host Statistics support, i.e. Transport could
* extend existing host statistics with its own specific statistics
* up to ISCSI_HOST_STATS_CUSTOM_MAX
*/
uint32_t custom_length;
struct iscsi_host_stats_custom custom[]
__aligned(sizeof(uint64_t));
};
#endif
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