^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright(c) 2007 Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Maintained at www.Open-FCoE.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #ifndef _LIBFC_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define _LIBFC_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/if.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/percpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/refcount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <scsi/scsi_transport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <scsi/scsi_transport_fc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <scsi/scsi_bsg_fc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <scsi/fc/fc_fcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <scsi/fc/fc_ns.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <scsi/fc/fc_ms.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <scsi/fc/fc_els.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <scsi/fc/fc_gs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <scsi/fc_frame.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define FC_FC4_PROV_SIZE (FC_TYPE_FCP + 1) /* size of tables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * libfc error codes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define FC_NO_ERR 0 /* no error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define FC_EX_TIMEOUT 1 /* Exchange timeout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define FC_EX_CLOSED 2 /* Exchange closed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define FC_EX_ALLOC_ERR 3 /* Exchange allocation failed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define FC_EX_XMIT_ERR 4 /* Exchange transmit failed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define FC_EX_ELS_RJT 5 /* ELS rejected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define FC_EX_INV_LOGIN 6 /* Login not completed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define FC_EX_SEQ_ERR 6 /* Exchange sequence error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * enum fc_lport_state - Local port states
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * @LPORT_ST_DISABLED: Disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * @LPORT_ST_FLOGI: Fabric login (FLOGI) sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * @LPORT_ST_DNS: Waiting for name server remote port to become ready
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * @LPORT_ST_RPN_ID: Register port name by ID (RPN_ID) sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * @LPORT_ST_RFT_ID: Register Fibre Channel types by ID (RFT_ID) sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * @LPORT_ST_RFF_ID: Register FC-4 Features by ID (RFF_ID) sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * @LPORT_ST_FDMI: Waiting for mgmt server rport to become ready
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * @LPORT_ST_RHBA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * @LPORT_ST_SCR: State Change Register (SCR) sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * @LPORT_ST_READY: Ready for use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * @LPORT_ST_LOGO: Local port logout (LOGO) sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * @LPORT_ST_RESET: Local port reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) enum fc_lport_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) LPORT_ST_DISABLED = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) LPORT_ST_FLOGI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) LPORT_ST_DNS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) LPORT_ST_RNN_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) LPORT_ST_RSNN_NN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) LPORT_ST_RSPN_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) LPORT_ST_RFT_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) LPORT_ST_RFF_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) LPORT_ST_FDMI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) LPORT_ST_RHBA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) LPORT_ST_RPA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) LPORT_ST_DHBA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) LPORT_ST_DPRT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) LPORT_ST_SCR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) LPORT_ST_READY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) LPORT_ST_LOGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) LPORT_ST_RESET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) enum fc_disc_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) DISC_EV_NONE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) DISC_EV_SUCCESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) DISC_EV_FAILED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * enum fc_rport_state - Remote port states
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * @RPORT_ST_INIT: Initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * @RPORT_ST_FLOGI: Waiting for FLOGI completion for point-to-multipoint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * @RPORT_ST_PLOGI_WAIT: Waiting for peer to login for point-to-multipoint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * @RPORT_ST_PLOGI: Waiting for PLOGI completion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * @RPORT_ST_PRLI: Waiting for PRLI completion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * @RPORT_ST_RTV: Waiting for RTV completion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * @RPORT_ST_READY: Ready for use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * @RPORT_ST_ADISC: Discover Address sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * @RPORT_ST_DELETE: Remote port being deleted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) enum fc_rport_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) RPORT_ST_INIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) RPORT_ST_FLOGI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) RPORT_ST_PLOGI_WAIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) RPORT_ST_PLOGI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) RPORT_ST_PRLI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) RPORT_ST_RTV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) RPORT_ST_READY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) RPORT_ST_ADISC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) RPORT_ST_DELETE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * struct fc_disc_port - temporary discovery port to hold rport identifiers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * @lp: Fibre Channel host port instance
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * @peers: Node for list management during discovery and RSCN processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * @rport_work: Work struct for starting the rport state machine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * @port_id: Port ID of the discovered port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct fc_disc_port {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct fc_lport *lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct list_head peers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct work_struct rport_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) u32 port_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * enum fc_rport_event - Remote port events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * @RPORT_EV_NONE: No event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * @RPORT_EV_READY: Remote port is ready for use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * @RPORT_EV_FAILED: State machine failed, remote port is not ready
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * @RPORT_EV_STOP: Remote port has been stopped
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * @RPORT_EV_LOGO: Remote port logout (LOGO) sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) enum fc_rport_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) RPORT_EV_NONE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) RPORT_EV_READY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) RPORT_EV_FAILED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) RPORT_EV_STOP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) RPORT_EV_LOGO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct fc_rport_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * struct fc_rport_operations - Operations for a remote port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * @event_callback: Function to be called for remote port events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct fc_rport_operations {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) void (*event_callback)(struct fc_lport *, struct fc_rport_priv *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) enum fc_rport_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * struct fc_rport_libfc_priv - libfc internal information about a remote port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * @local_port: The associated local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * @rp_state: Indicates READY for I/O or DELETE when blocked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * @flags: REC and RETRY supported flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * @e_d_tov: Error detect timeout value (in msec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * @r_a_tov: Resource allocation timeout value (in msec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct fc_rport_libfc_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct fc_lport *local_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) enum fc_rport_state rp_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) u16 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) #define FC_RP_FLAGS_REC_SUPPORTED (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #define FC_RP_FLAGS_RETRY (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #define FC_RP_STARTED (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #define FC_RP_FLAGS_CONF_REQ (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) unsigned int e_d_tov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) unsigned int r_a_tov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * struct fc_rport_priv - libfc remote port and discovery info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * @local_port: The associated local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * @rport: The FC transport remote port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * @kref: Reference counter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * @rp_state: Enumeration that tracks progress of PLOGI, PRLI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * and RTV exchanges
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * @ids: The remote port identifiers and roles
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * @flags: STARTED, REC and RETRY_SUPPORTED flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * @max_seq: Maximum number of concurrent sequences
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * @disc_id: The discovery identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * @maxframe_size: The maximum frame size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * @retries: The retry count for the current state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * @major_retries: The retry count for the entire PLOGI/PRLI state machine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * @e_d_tov: Error detect timeout value (in msec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * @r_a_tov: Resource allocation timeout value (in msec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * @rp_mutex: The mutex that protects the remote port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * @retry_work: Handle for retries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * @event_callback: Callback when READY, FAILED or LOGO states complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * @prli_count: Count of open PRLI sessions in providers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * @rcu: Structure used for freeing in an RCU-safe manner
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) struct fc_rport_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) struct fc_lport *local_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) struct fc_rport *rport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct kref kref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) enum fc_rport_state rp_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct fc_rport_identifiers ids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) u16 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) u16 max_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) u16 disc_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) u16 maxframe_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) unsigned int retries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) unsigned int major_retries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) unsigned int e_d_tov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) unsigned int r_a_tov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct mutex rp_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) struct delayed_work retry_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) enum fc_rport_event event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct fc_rport_operations *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct list_head peers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct work_struct event_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) u32 supported_classes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) u16 prli_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) u16 sp_features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) u8 spp_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) void (*lld_event_callback)(struct fc_lport *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct fc_rport_priv *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) enum fc_rport_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * struct fc_stats - fc stats structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * @SecondsSinceLastReset: Seconds since the last reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * @TxFrames: Number of transmitted frames
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * @TxWords: Number of transmitted words
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) * @RxFrames: Number of received frames
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) * @RxWords: Number of received words
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) * @ErrorFrames: Number of received error frames
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * @DumpedFrames: Number of dumped frames
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * @FcpPktAllocFails: Number of fcp packet allocation failures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * @FcpPktAborts: Number of fcp packet aborts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * @FcpFrameAllocFails: Number of fcp frame allocation failures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * @LinkFailureCount: Number of link failures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * @LossOfSignalCount: Number for signal losses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * @InvalidTxWordCount: Number of invalid transmitted words
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * @InvalidCRCCount: Number of invalid CRCs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * @InputRequests: Number of input requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * @OutputRequests: Number of output requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * @ControlRequests: Number of control requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * @InputBytes: Number of received bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * @OutputBytes: Number of transmitted bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * @VLinkFailureCount: Number of virtual link failures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) * @MissDiscAdvCount: Number of missing FIP discovery advertisement
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct fc_stats {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) u64 SecondsSinceLastReset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) u64 TxFrames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) u64 TxWords;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) u64 RxFrames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) u64 RxWords;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) u64 ErrorFrames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) u64 DumpedFrames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) u64 FcpPktAllocFails;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) u64 FcpPktAborts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) u64 FcpFrameAllocFails;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) u64 LinkFailureCount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) u64 LossOfSignalCount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) u64 InvalidTxWordCount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) u64 InvalidCRCCount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) u64 InputRequests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) u64 OutputRequests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) u64 ControlRequests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) u64 InputBytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) u64 OutputBytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) u64 VLinkFailureCount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) u64 MissDiscAdvCount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * struct fc_seq_els_data - ELS data used for passing ELS specific responses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * @reason: The reason for rejection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * @explan: The explanation of the rejection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * Mainly used by the exchange manager layer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct fc_seq_els_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) enum fc_els_rjt_reason reason;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) enum fc_els_rjt_explan explan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * struct fc_fcp_pkt - FCP request structure (one for each scsi_cmnd request)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * @lp: The associated local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * @state: The state of the I/O
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * @ref_cnt: Reference count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * @scsi_pkt_lock: Lock to protect the SCSI packet (must be taken before the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * host_lock if both are to be held at the same time)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * @cmd: The SCSI command (set and clear with the host_lock held)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * @list: Tracks queued commands (accessed with the host_lock held)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * @timer: The command timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * @tm_done: Completion indicator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * @wait_for_comp: Indicator to wait for completion of the I/O (in jiffies)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * @data_len: The length of the data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) * @cdb_cmd: The CDB command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) * @xfer_len: The transfer length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) * @xfer_ddp: Indicates if this transfer used DDP (XID of the exchange
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * will be set here if DDP was setup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * @xfer_contig_end: The offset into the buffer if the buffer is contiguous
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * (Tx and Rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * @max_payload: The maximum payload size (in bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) * @io_status: SCSI result (upper 24 bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) * @cdb_status: CDB status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * @status_code: FCP I/O status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * @scsi_comp_flags: Completion flags (bit 3 Underrun bit 2: overrun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * @req_flags: Request flags (bit 0: read bit:1 write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * @scsi_resid: SCSI residule length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * @rport: The remote port that the SCSI command is targeted at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) * @seq_ptr: The sequence that will carry the SCSI command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) * @recov_retry: Number of recovery retries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * @recov_seq: The sequence for REC or SRR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) struct fc_fcp_pkt {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) spinlock_t scsi_pkt_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) refcount_t ref_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) /* SCSI command and data transfer information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) u32 data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) /* SCSI I/O related information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) struct scsi_cmnd *cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) /* Housekeeping information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct fc_lport *lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) u8 state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) /* SCSI/FCP return status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) u8 cdb_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) u8 status_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) u8 scsi_comp_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) u32 io_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) u32 req_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) u32 scsi_resid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) /* Transport related veriables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) size_t xfer_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct fcp_cmnd cdb_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) u32 xfer_contig_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) u16 max_payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) u16 xfer_ddp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) /* Associated structures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) struct fc_rport *rport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) struct fc_seq *seq_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) /* Timeout/error related information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct timer_list timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) int wait_for_comp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) int timer_delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) u32 recov_retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct fc_seq *recov_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) struct completion tm_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) } ____cacheline_aligned_in_smp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * Structure and function definitions for managing Fibre Channel Exchanges
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * and Sequences
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * fc_exch holds state for one exchange and links to its active sequence.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) * fc_seq holds the state for an individual sequence.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) struct fc_exch_mgr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) struct fc_exch_mgr_anchor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) extern u16 fc_cpu_mask; /* cpu mask for possible cpus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) * struct fc_seq - FC sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) * @id: The sequence ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) * @ssb_stat: Status flags for the sequence status block (SSB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) * @cnt: Number of frames sent so far
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) * @rec_data: FC-4 value for REC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct fc_seq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) u8 id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) u16 ssb_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) u16 cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) u32 rec_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) #define FC_EX_DONE (1 << 0) /* ep is completed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) #define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) #define FC_EX_QUARANTINE (1 << 2) /* exch is quarantined */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) * struct fc_exch - Fibre Channel Exchange
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * @em: Exchange manager
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * @pool: Exchange pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) * @state: The exchange's state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) * @xid: The exchange ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) * @ex_list: Handle used by the EM to track free exchanges
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) * @ex_lock: Lock that protects the exchange
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) * @ex_refcnt: Reference count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) * @timeout_work: Handle for timeout handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * @lp: The local port that this exchange is on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) * @oxid: Originator's exchange ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * @rxid: Responder's exchange ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) * @oid: Originator's FCID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * @sid: Source FCID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * @did: Destination FCID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * @esb_stat: ESB exchange status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * @r_a_tov: Resouce allocation time out value (in msecs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) * @seq_id: The next sequence ID to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * @encaps: encapsulation information for lower-level driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * @f_ctl: F_CTL flags for the sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) * @fh_type: The frame type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) * @class: The class of service
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) * @seq: The sequence in use on this exchange
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) * @resp_active: Number of tasks that are concurrently executing @resp().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) * @resp_task: If @resp_active > 0, either the task executing @resp(), the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) * task that has been interrupted to execute the soft-IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) * executing @resp() or NULL if more than one task is executing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) * @resp concurrently.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) * @resp_wq: Waitqueue for the tasks waiting on @resp_active.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) * @resp: Callback for responses on this exchange
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) * @destructor: Called when destroying the exchange
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * @arg: Passed as a void pointer to the resp() callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) * Locking notes: The ex_lock protects following items:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) * state, esb_stat, f_ctl, seq.ssb_stat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) * seq_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) * sequence allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) struct fc_exch {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) spinlock_t ex_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) atomic_t ex_refcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) enum fc_class class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) struct fc_exch_mgr *em;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct fc_exch_pool *pool;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) struct list_head ex_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) struct fc_lport *lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) u32 esb_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) u8 state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) u8 fh_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) u8 seq_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) u8 encaps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) u16 xid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) u16 oxid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) u16 rxid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) u32 oid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) u32 sid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) u32 did;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) u32 r_a_tov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) u32 f_ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) struct fc_seq seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) int resp_active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) struct task_struct *resp_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) wait_queue_head_t resp_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) void (*resp)(struct fc_seq *, struct fc_frame *, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) void *arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) void (*destructor)(struct fc_seq *, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct delayed_work timeout_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) } ____cacheline_aligned_in_smp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) struct libfc_function_template {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) * Interface to send a FC frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) * STATUS: REQUIRED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) int (*frame_send)(struct fc_lport *, struct fc_frame *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) * Interface to send ELS/CT frames
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) struct fc_seq *(*elsct_send)(struct fc_lport *, u32 did,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) struct fc_frame *, unsigned int op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) void (*resp)(struct fc_seq *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) struct fc_frame *, void *arg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) void *arg, u32 timer_msec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * Sets up the DDP context for a given exchange id on the given
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * scatterlist if LLD supports DDP for large receive.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) int (*ddp_setup)(struct fc_lport *, u16, struct scatterlist *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) unsigned int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * Completes the DDP transfer and returns the length of data DDPed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) * for the given exchange id.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) int (*ddp_done)(struct fc_lport *, u16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * Sets up the DDP context for a given exchange id on the given
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) * scatterlist if LLD supports DDP for target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) int (*ddp_target)(struct fc_lport *, u16, struct scatterlist *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) unsigned int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) * Allow LLD to fill its own Link Error Status Block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) * Reset an exchange manager, completing all sequences and exchanges.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) * If s_id is non-zero, reset only exchanges originating from that FID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) * If d_id is non-zero, reset only exchanges sending to that FID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) void (*exch_mgr_reset)(struct fc_lport *, u32 s_id, u32 d_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) * Set the local port FC_ID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * This may be provided by the LLD to allow it to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * notified when the local port is assigned a FC-ID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) * The frame, if non-NULL, is the incoming frame with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * FLOGI LS_ACC or FLOGI, and may contain the granted MAC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * address for the LLD. The frame pointer may be NULL if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) * no MAC is associated with this assignment (LOGO or PLOGI).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) * If FC_ID is non-zero, r_a_tov and e_d_tov must be valid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * Note: this is called with the local port mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) void (*lport_set_port_id)(struct fc_lport *, u32 port_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) struct fc_frame *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * Callback routine after the remote port is logged in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) void (*rport_event_callback)(struct fc_lport *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) struct fc_rport_priv *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) enum fc_rport_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * Send a fcp cmd from fsp pkt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) * Called with the SCSI host lock unlocked and irqs disabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) * The resp handler is called when FCP_RSP received.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) int (*fcp_cmd_send)(struct fc_lport *, struct fc_fcp_pkt *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) void (*resp)(struct fc_seq *, struct fc_frame *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) void *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) * Cleanup the FCP layer, used during link down and reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) void (*fcp_cleanup)(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) * Abort all I/O on a local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) void (*fcp_abort_io)(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) * Receive a request for the discovery layer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) void (*disc_recv_req)(struct fc_lport *, struct fc_frame *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) * Start discovery for a local port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) void (*disc_start)(void (*disc_callback)(struct fc_lport *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) enum fc_disc_event),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) * Stop discovery for a given lport. This will remove
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) * all discovered rports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) void (*disc_stop) (struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) * Stop discovery for a given lport. This will block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) * until all discovered rports are deleted from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) * FC transport class
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) * STATUS: OPTIONAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) void (*disc_stop_final) (struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) * struct fc_disc - Discovery context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) * @retry_count: Number of retries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) * @pending: 1 if discovery is pending, 0 if not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * @requested: 1 if discovery has been requested, 0 if not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) * @seq_count: Number of sequences used for discovery
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) * @buf_len: Length of the discovery buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) * @disc_id: Discovery ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) * @rports: List of discovered remote ports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) * @priv: Private pointer for use by discovery code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * @disc_mutex: Mutex that protects the discovery context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * @partial_buf: Partial name buffer (if names are returned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) * in multiple frames)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) * @disc_work: handle for delayed work context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) * @disc_callback: Callback routine called when discovery completes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) struct fc_disc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) unsigned char retry_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) unsigned char pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) unsigned char requested;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) unsigned short seq_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) unsigned char buf_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) u16 disc_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) struct list_head rports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) void *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) struct mutex disc_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) struct fc_gpn_ft_resp partial_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) struct delayed_work disc_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) void (*disc_callback)(struct fc_lport *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) enum fc_disc_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) * Local port notifier and events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) extern struct blocking_notifier_head fc_lport_notifier_head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) enum fc_lport_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) FC_LPORT_EV_ADD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) FC_LPORT_EV_DEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) * struct fc_lport - Local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) * @host: The SCSI host associated with a local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) * @ema_list: Exchange manager anchor list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) * @dns_rdata: The directory server remote port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) * @ms_rdata: The management server remote port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) * @ptp_rdata: Point to point remote port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) * @scsi_priv: FCP layer internal data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) * @disc: Discovery context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) * @vports: Child vports if N_Port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * @vport: Parent vport if VN_Port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) * @tt: Libfc function template
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) * @link_up: Link state (1 = link up, 0 = link down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) * @qfull: Queue state (1 queue is full, 0 queue is not full)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) * @state: Identifies the state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) * @boot_time: Timestamp indicating when the local port came online
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) * @host_stats: SCSI host statistics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) * @stats: FC local port stats (TODO separate libfc LLD stats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) * @retry_count: Number of retries in the current state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) * @port_id: FC Port ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) * @wwpn: World Wide Port Name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) * @wwnn: World Wide Node Name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) * @service_params: Common service parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) * @e_d_tov: Error detection timeout value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) * @r_a_tov: Resouce allocation timeout value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) * @rnid_gen: RNID information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) * @sg_supp: Indicates if scatter gather is supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) * @seq_offload: Indicates if sequence offload is supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) * @crc_offload: Indicates if CRC offload is supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) * @lro_enabled: Indicates if large receive offload is supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) * @does_npiv: Supports multiple vports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) * @npiv_enabled: Switch/fabric allows NPIV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * @mfs: The maximum Fibre Channel payload size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) * @max_retry_count: The maximum retry attempts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) * @max_rport_retry_count: The maximum remote port retry attempts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * @rport_priv_size: Size needed by driver after struct fc_rport_priv
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * @lro_xid: The maximum XID for LRO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) * @lso_max: The maximum large offload send size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) * @fcts: FC-4 type mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) * @lp_mutex: Mutex to protect the local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * @list: Linkage on list of vport peers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * @retry_work: Handle to local port for delayed retry context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) * @prov: Pointers available for use by passive FC-4 providers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) * @lport_list: Linkage on module-wide list of local ports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) struct fc_lport {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) /* Associations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) struct Scsi_Host *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) struct list_head ema_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) struct fc_rport_priv *dns_rdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) struct fc_rport_priv *ms_rdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) struct fc_rport_priv *ptp_rdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) void *scsi_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) struct fc_disc disc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) /* Virtual port information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) struct list_head vports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) struct fc_vport *vport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) /* Operational Information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) struct libfc_function_template tt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) u8 link_up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) u8 qfull;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) u16 vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) enum fc_lport_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) unsigned long boot_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) struct fc_host_statistics host_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) struct fc_stats __percpu *stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) u8 retry_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) /* Fabric information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) u32 port_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) u64 wwpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) u64 wwnn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) unsigned int service_params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) unsigned int e_d_tov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) unsigned int r_a_tov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) struct fc_els_rnid_gen rnid_gen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) /* Capabilities */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) u32 sg_supp:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) u32 seq_offload:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) u32 crc_offload:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) u32 lro_enabled:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) u32 does_npiv:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) u32 npiv_enabled:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) u32 point_to_multipoint:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) u32 fdmi_enabled:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) u32 mfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) u8 max_retry_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) u8 max_rport_retry_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) u16 rport_priv_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) u16 link_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) u16 link_supported_speeds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) u16 lro_xid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) unsigned int lso_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) struct fc_ns_fts fcts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) /* Miscellaneous */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) struct mutex lp_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) struct delayed_work retry_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) void *prov[FC_FC4_PROV_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) struct list_head lport_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) * struct fc4_prov - FC-4 provider registration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) * @prli: Handler for incoming PRLI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) * @prlo: Handler for session reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) * @recv: Handler for incoming request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) * @module: Pointer to module. May be NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) struct fc4_prov {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) int (*prli)(struct fc_rport_priv *, u32 spp_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) const struct fc_els_spp *spp_in,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) struct fc_els_spp *spp_out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) void (*prlo)(struct fc_rport_priv *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) void (*recv)(struct fc_lport *, struct fc_frame *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) struct module *module;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) * Register FC-4 provider with libfc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) int fc_fc4_register_provider(enum fc_fh_type type, struct fc4_prov *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) * FC_LPORT HELPER FUNCTIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) * fc_lport_test_ready() - Determine if a local port is in the READY state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) * @lport: The local port to test
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) static inline int fc_lport_test_ready(struct fc_lport *lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) return lport->state == LPORT_ST_READY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) * fc_set_wwnn() - Set the World Wide Node Name of a local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) * @lport: The local port whose WWNN is to be set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) * @wwnn: The new WWNN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) static inline void fc_set_wwnn(struct fc_lport *lport, u64 wwnn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) lport->wwnn = wwnn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) * fc_set_wwpn() - Set the World Wide Port Name of a local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) * @lport: The local port whose WWPN is to be set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) * @wwpn: The new WWPN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) static inline void fc_set_wwpn(struct fc_lport *lport, u64 wwpn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) lport->wwpn = wwpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) * fc_lport_state_enter() - Change a local port's state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) * @lport: The local port whose state is to change
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) * @state: The new state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) static inline void fc_lport_state_enter(struct fc_lport *lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) enum fc_lport_state state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) if (state != lport->state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) lport->retry_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) lport->state = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * fc_lport_init_stats() - Allocate per-CPU statistics for a local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) * @lport: The local port whose statistics are to be initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) static inline int fc_lport_init_stats(struct fc_lport *lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) lport->stats = alloc_percpu(struct fc_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) if (!lport->stats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) * fc_lport_free_stats() - Free memory for a local port's statistics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) * @lport: The local port whose statistics are to be freed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) static inline void fc_lport_free_stats(struct fc_lport *lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) free_percpu(lport->stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) * lport_priv() - Return the private data from a local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) * @lport: The local port whose private data is to be retreived
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) static inline void *lport_priv(const struct fc_lport *lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) return (void *)(lport + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) * libfc_host_alloc() - Allocate a Scsi_Host with room for a local port and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) * LLD private data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) * @sht: The SCSI host template
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) * @priv_size: Size of private data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) * Returns: libfc lport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) static inline struct fc_lport *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) libfc_host_alloc(struct scsi_host_template *sht, int priv_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) struct fc_lport *lport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) struct Scsi_Host *shost;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) if (!shost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) lport = shost_priv(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) lport->host = shost;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) INIT_LIST_HEAD(&lport->ema_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) INIT_LIST_HEAD(&lport->vports);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) return lport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) * FC_FCP HELPER FUNCTIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) if (fsp && fsp->cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) * LOCAL PORT LAYER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) int fc_lport_init(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) int fc_lport_destroy(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) int fc_fabric_logoff(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) int fc_fabric_login(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) void __fc_linkup(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) void fc_linkup(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) void __fc_linkdown(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) void fc_linkdown(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) void fc_vport_setlink(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) void fc_vports_linkchange(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) int fc_lport_config(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) int fc_lport_reset(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) void fc_lport_recv(struct fc_lport *lport, struct fc_frame *fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) int fc_set_mfs(struct fc_lport *, u32 mfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) int fc_lport_bsg_request(struct bsg_job *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) void fc_lport_set_local_id(struct fc_lport *, u32 port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) * REMOTE PORT LAYER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) void fc_rport_terminate_io(struct fc_rport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) struct fc_rport_priv *fc_rport_lookup(const struct fc_lport *lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) u32 port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) struct fc_rport_priv *fc_rport_create(struct fc_lport *, u32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) void fc_rport_destroy(struct kref *kref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) int fc_rport_login(struct fc_rport_priv *rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) int fc_rport_logoff(struct fc_rport_priv *rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) void fc_rport_recv_req(struct fc_lport *lport, struct fc_frame *fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) void fc_rport_flush_queue(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) * DISCOVERY LAYER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) void fc_disc_init(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) void fc_disc_config(struct fc_lport *, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) static inline struct fc_lport *fc_disc_lport(struct fc_disc *disc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) return container_of(disc, struct fc_lport, disc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) * FCP LAYER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) int fc_fcp_init(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) void fc_fcp_destroy(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) * SCSI INTERACTION LAYER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) int fc_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) int fc_eh_abort(struct scsi_cmnd *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) int fc_eh_device_reset(struct scsi_cmnd *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) int fc_eh_host_reset(struct scsi_cmnd *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) int fc_slave_alloc(struct scsi_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) * ELS/CT interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) int fc_elsct_init(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) struct fc_frame *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) unsigned int op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) void (*resp)(struct fc_seq *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) struct fc_frame *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) void *arg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) void *arg, u32 timer_msec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) void fc_fill_reply_hdr(struct fc_frame *, const struct fc_frame *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) enum fc_rctl, u32 parm_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) void fc_fill_hdr(struct fc_frame *, const struct fc_frame *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) enum fc_rctl, u32 f_ctl, u16 seq_cnt, u32 parm_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) * EXCHANGE MANAGER LAYER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) int fc_exch_init(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) void fc_exch_update_stats(struct fc_lport *lport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) struct fc_seq *fc_exch_seq_send(struct fc_lport *lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) struct fc_frame *fp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) void (*resp)(struct fc_seq *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) struct fc_frame *fp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) void *arg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) void (*destructor)(struct fc_seq *, void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) void *arg, u32 timer_msec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) void fc_seq_els_rsp_send(struct fc_frame *, enum fc_els_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) struct fc_seq_els_data *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) struct fc_seq *fc_seq_start_next(struct fc_seq *sp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) void fc_seq_set_resp(struct fc_seq *sp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) void (*resp)(struct fc_seq *, struct fc_frame *, void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) void *arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) void fc_seq_release(struct fc_seq *sp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) struct fc_exch_mgr *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) bool (*match)(struct fc_frame *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) void fc_exch_mgr_del(struct fc_exch_mgr_anchor *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) u16 min_xid, u16 max_xid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) bool (*match)(struct fc_frame *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) void fc_exch_mgr_free(struct fc_lport *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) void fc_exch_recv(struct fc_lport *, struct fc_frame *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, struct fc_frame *fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) int fc_seq_exch_abort(const struct fc_seq *, unsigned int timer_msec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) void fc_exch_done(struct fc_seq *sp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) * Functions for fc_functions_template
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) void fc_get_host_speed(struct Scsi_Host *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) void fc_get_host_port_state(struct Scsi_Host *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) void fc_set_rport_loss_tmo(struct fc_rport *, u32 timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) #endif /* _LIBFC_H_ */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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