142e9a92fSRobert Love /* 242e9a92fSRobert Love * Copyright(c) 2007 Intel Corporation. All rights reserved. 342e9a92fSRobert Love * 442e9a92fSRobert Love * This program is free software; you can redistribute it and/or modify it 542e9a92fSRobert Love * under the terms and conditions of the GNU General Public License, 642e9a92fSRobert Love * version 2, as published by the Free Software Foundation. 742e9a92fSRobert Love * 842e9a92fSRobert Love * This program is distributed in the hope it will be useful, but WITHOUT 942e9a92fSRobert Love * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1042e9a92fSRobert Love * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 1142e9a92fSRobert Love * more details. 1242e9a92fSRobert Love * 1342e9a92fSRobert Love * You should have received a copy of the GNU General Public License along with 1442e9a92fSRobert Love * this program; if not, write to the Free Software Foundation, Inc., 1542e9a92fSRobert Love * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 1642e9a92fSRobert Love * 1742e9a92fSRobert Love * Maintained at www.Open-FCoE.org 1842e9a92fSRobert Love */ 1942e9a92fSRobert Love 2042e9a92fSRobert Love #ifndef _LIBFC_H_ 2142e9a92fSRobert Love #define _LIBFC_H_ 2242e9a92fSRobert Love 2342e9a92fSRobert Love #include <linux/timer.h> 2442e9a92fSRobert Love #include <linux/if.h> 25582b45bcSRobert Love #include <linux/percpu.h> 2642e9a92fSRobert Love 2742e9a92fSRobert Love #include <scsi/scsi_transport.h> 2842e9a92fSRobert Love #include <scsi/scsi_transport_fc.h> 29a51ab396SSteve Ma #include <scsi/scsi_bsg_fc.h> 3042e9a92fSRobert Love 3142e9a92fSRobert Love #include <scsi/fc/fc_fcp.h> 3242e9a92fSRobert Love #include <scsi/fc/fc_ns.h> 33d78c317fSNeerav Parikh #include <scsi/fc/fc_ms.h> 3442e9a92fSRobert Love #include <scsi/fc/fc_els.h> 3542e9a92fSRobert Love #include <scsi/fc/fc_gs.h> 3642e9a92fSRobert Love 3742e9a92fSRobert Love #include <scsi/fc_frame.h> 3842e9a92fSRobert Love 3996ad8464SJoe Eykholt #define FC_FC4_PROV_SIZE (FC_TYPE_FCP + 1) /* size of tables */ 4096ad8464SJoe Eykholt 4142e9a92fSRobert Love /* 4242e9a92fSRobert Love * libfc error codes 4342e9a92fSRobert Love */ 4442e9a92fSRobert Love #define FC_NO_ERR 0 /* no error */ 4542e9a92fSRobert Love #define FC_EX_TIMEOUT 1 /* Exchange timeout */ 4642e9a92fSRobert Love #define FC_EX_CLOSED 2 /* Exchange closed */ 479f9504a7SHannes Reinecke #define FC_EX_ALLOC_ERR 3 /* Exchange allocation failed */ 489f9504a7SHannes Reinecke #define FC_EX_XMIT_ERR 4 /* Exchange transmit failed */ 499f9504a7SHannes Reinecke #define FC_EX_ELS_RJT 5 /* ELS rejected */ 509f9504a7SHannes Reinecke #define FC_EX_INV_LOGIN 6 /* Login not completed */ 519f9504a7SHannes Reinecke #define FC_EX_SEQ_ERR 6 /* Exchange sequence error */ 5242e9a92fSRobert Love 533a3b42bfSRobert Love /** 543a3b42bfSRobert Love * enum fc_lport_state - Local port states 553a3b42bfSRobert Love * @LPORT_ST_DISABLED: Disabled 563a3b42bfSRobert Love * @LPORT_ST_FLOGI: Fabric login (FLOGI) sent 573a3b42bfSRobert Love * @LPORT_ST_DNS: Waiting for name server remote port to become ready 583a3b42bfSRobert Love * @LPORT_ST_RPN_ID: Register port name by ID (RPN_ID) sent 593a3b42bfSRobert Love * @LPORT_ST_RFT_ID: Register Fibre Channel types by ID (RFT_ID) sent 60ab593b18SJoe Eykholt * @LPORT_ST_RFF_ID: Register FC-4 Features by ID (RFF_ID) sent 61d78c317fSNeerav Parikh * @LPORT_ST_FDMI: Waiting for mgmt server rport to become ready 62d78c317fSNeerav Parikh * @LPORT_ST_RHBA: 633a3b42bfSRobert Love * @LPORT_ST_SCR: State Change Register (SCR) sent 643a3b42bfSRobert Love * @LPORT_ST_READY: Ready for use 653a3b42bfSRobert Love * @LPORT_ST_LOGO: Local port logout (LOGO) sent 663a3b42bfSRobert Love * @LPORT_ST_RESET: Local port reset 6742e9a92fSRobert Love */ 6842e9a92fSRobert Love enum fc_lport_state { 69b1d9fd55SJoe Eykholt LPORT_ST_DISABLED = 0, 7042e9a92fSRobert Love LPORT_ST_FLOGI, 7142e9a92fSRobert Love LPORT_ST_DNS, 72c9c7bd7aSChris Leech LPORT_ST_RNN_ID, 735baa17c3SChris Leech LPORT_ST_RSNN_NN, 74c9866a54SChris Leech LPORT_ST_RSPN_ID, 7542e9a92fSRobert Love LPORT_ST_RFT_ID, 76ab593b18SJoe Eykholt LPORT_ST_RFF_ID, 77d78c317fSNeerav Parikh LPORT_ST_FDMI, 78d78c317fSNeerav Parikh LPORT_ST_RHBA, 79d78c317fSNeerav Parikh LPORT_ST_RPA, 80d78c317fSNeerav Parikh LPORT_ST_DHBA, 81d78c317fSNeerav Parikh LPORT_ST_DPRT, 8242e9a92fSRobert Love LPORT_ST_SCR, 8342e9a92fSRobert Love LPORT_ST_READY, 8442e9a92fSRobert Love LPORT_ST_LOGO, 8542e9a92fSRobert Love LPORT_ST_RESET 8642e9a92fSRobert Love }; 8742e9a92fSRobert Love 8842e9a92fSRobert Love enum fc_disc_event { 8942e9a92fSRobert Love DISC_EV_NONE = 0, 9042e9a92fSRobert Love DISC_EV_SUCCESS, 9142e9a92fSRobert Love DISC_EV_FAILED 9242e9a92fSRobert Love }; 9342e9a92fSRobert Love 943a3b42bfSRobert Love /** 953a3b42bfSRobert Love * enum fc_rport_state - Remote port states 963a3b42bfSRobert Love * @RPORT_ST_INIT: Initialized 97a7b12a27SJoe Eykholt * @RPORT_ST_FLOGI: Waiting for FLOGI completion for point-to-multipoint 98a7b12a27SJoe Eykholt * @RPORT_ST_PLOGI_WAIT: Waiting for peer to login for point-to-multipoint 993a3b42bfSRobert Love * @RPORT_ST_PLOGI: Waiting for PLOGI completion 1003a3b42bfSRobert Love * @RPORT_ST_PRLI: Waiting for PRLI completion 1013a3b42bfSRobert Love * @RPORT_ST_RTV: Waiting for RTV completion 1023a3b42bfSRobert Love * @RPORT_ST_READY: Ready for use 1033a3b42bfSRobert Love * @RPORT_ST_ADISC: Discover Address sent 1043a3b42bfSRobert Love * @RPORT_ST_DELETE: Remote port being deleted 1053a3b42bfSRobert Love */ 10642e9a92fSRobert Love enum fc_rport_state { 1073a3b42bfSRobert Love RPORT_ST_INIT, 108a7b12a27SJoe Eykholt RPORT_ST_FLOGI, 109a7b12a27SJoe Eykholt RPORT_ST_PLOGI_WAIT, 1103a3b42bfSRobert Love RPORT_ST_PLOGI, 1113a3b42bfSRobert Love RPORT_ST_PRLI, 1123a3b42bfSRobert Love RPORT_ST_RTV, 1133a3b42bfSRobert Love RPORT_ST_READY, 1143a3b42bfSRobert Love RPORT_ST_ADISC, 1153a3b42bfSRobert Love RPORT_ST_DELETE, 11642e9a92fSRobert Love }; 11742e9a92fSRobert Love 11842e9a92fSRobert Love /** 11942e9a92fSRobert Love * struct fc_disc_port - temporary discovery port to hold rport identifiers 12042e9a92fSRobert Love * @lp: Fibre Channel host port instance 1219737e6a7SRobert Love * @peers: Node for list management during discovery and RSCN processing 1229737e6a7SRobert Love * @rport_work: Work struct for starting the rport state machine 1239737e6a7SRobert Love * @port_id: Port ID of the discovered port 12442e9a92fSRobert Love */ 12542e9a92fSRobert Love struct fc_disc_port { 12642e9a92fSRobert Love struct fc_lport *lp; 12742e9a92fSRobert Love struct list_head peers; 12842e9a92fSRobert Love struct work_struct rport_work; 1299737e6a7SRobert Love u32 port_id; 13042e9a92fSRobert Love }; 13142e9a92fSRobert Love 1323a3b42bfSRobert Love /** 1333a3b42bfSRobert Love * enum fc_rport_event - Remote port events 1343a3b42bfSRobert Love * @RPORT_EV_NONE: No event 1353a3b42bfSRobert Love * @RPORT_EV_READY: Remote port is ready for use 1363a3b42bfSRobert Love * @RPORT_EV_FAILED: State machine failed, remote port is not ready 1373a3b42bfSRobert Love * @RPORT_EV_STOP: Remote port has been stopped 1383a3b42bfSRobert Love * @RPORT_EV_LOGO: Remote port logout (LOGO) sent 1393a3b42bfSRobert Love */ 14042e9a92fSRobert Love enum fc_rport_event { 14142e9a92fSRobert Love RPORT_EV_NONE = 0, 1424c0f62b5SJoe Eykholt RPORT_EV_READY, 14342e9a92fSRobert Love RPORT_EV_FAILED, 14442e9a92fSRobert Love RPORT_EV_STOP, 14542e9a92fSRobert Love RPORT_EV_LOGO 14642e9a92fSRobert Love }; 14742e9a92fSRobert Love 1489fb9d328SJoe Eykholt struct fc_rport_priv; 1499fb9d328SJoe Eykholt 1503a3b42bfSRobert Love /** 1513a3b42bfSRobert Love * struct fc_rport_operations - Operations for a remote port 1523a3b42bfSRobert Love * @event_callback: Function to be called for remote port events 1533a3b42bfSRobert Love */ 15442e9a92fSRobert Love struct fc_rport_operations { 1559fb9d328SJoe Eykholt void (*event_callback)(struct fc_lport *, struct fc_rport_priv *, 15642e9a92fSRobert Love enum fc_rport_event); 15742e9a92fSRobert Love }; 15842e9a92fSRobert Love 15942e9a92fSRobert Love /** 16042e9a92fSRobert Love * struct fc_rport_libfc_priv - libfc internal information about a remote port 1613a3b42bfSRobert Love * @local_port: The associated local port 1623a3b42bfSRobert Love * @rp_state: Indicates READY for I/O or DELETE when blocked 1639e9d0452SJoe Eykholt * @flags: REC and RETRY supported flags 1643a3b42bfSRobert Love * @e_d_tov: Error detect timeout value (in msec) 1653a3b42bfSRobert Love * @r_a_tov: Resource allocation timeout value (in msec) 1669e9d0452SJoe Eykholt */ 1679e9d0452SJoe Eykholt struct fc_rport_libfc_priv { 1689e9d0452SJoe Eykholt struct fc_lport *local_port; 1699e9d0452SJoe Eykholt enum fc_rport_state rp_state; 1709e9d0452SJoe Eykholt u16 flags; 1719e9d0452SJoe Eykholt #define FC_RP_FLAGS_REC_SUPPORTED (1 << 0) 1729e9d0452SJoe Eykholt #define FC_RP_FLAGS_RETRY (1 << 1) 1734b2164d4SJoe Eykholt #define FC_RP_STARTED (1 << 2) 17475a2792dSBhanu Prakash Gollapudi #define FC_RP_FLAGS_CONF_REQ (1 << 3) 1759e9d0452SJoe Eykholt unsigned int e_d_tov; 1769e9d0452SJoe Eykholt unsigned int r_a_tov; 1779e9d0452SJoe Eykholt }; 1789e9d0452SJoe Eykholt 1799e9d0452SJoe Eykholt /** 1803a3b42bfSRobert Love * struct fc_rport_priv - libfc remote port and discovery info 1813a3b42bfSRobert Love * @local_port: The associated local port 1823a3b42bfSRobert Love * @rport: The FC transport remote port 1833a3b42bfSRobert Love * @kref: Reference counter 1843a3b42bfSRobert Love * @rp_state: Enumeration that tracks progress of PLOGI, PRLI, 1853a3b42bfSRobert Love * and RTV exchanges 1863a3b42bfSRobert Love * @ids: The remote port identifiers and roles 1874b2164d4SJoe Eykholt * @flags: STARTED, REC and RETRY_SUPPORTED flags 1883a3b42bfSRobert Love * @max_seq: Maximum number of concurrent sequences 1893a3b42bfSRobert Love * @disc_id: The discovery identifier 1903a3b42bfSRobert Love * @maxframe_size: The maximum frame size 1913a3b42bfSRobert Love * @retries: The retry count for the current state 192f034260dSJoe Eykholt * @major_retries: The retry count for the entire PLOGI/PRLI state machine 1933a3b42bfSRobert Love * @e_d_tov: Error detect timeout value (in msec) 1943a3b42bfSRobert Love * @r_a_tov: Resource allocation timeout value (in msec) 1953a3b42bfSRobert Love * @rp_mutex: The mutex that protects the remote port 1963a3b42bfSRobert Love * @retry_work: Handle for retries 1973a3b42bfSRobert Love * @event_callback: Callback when READY, FAILED or LOGO states complete 19896ad8464SJoe Eykholt * @prli_count: Count of open PRLI sessions in providers 19942e90414SJoe Eykholt * @rcu: Structure used for freeing in an RCU-safe manner 20042e9a92fSRobert Love */ 2019e9d0452SJoe Eykholt struct fc_rport_priv { 20242e9a92fSRobert Love struct fc_lport *local_port; 203f211fa51SJoe Eykholt struct fc_rport *rport; 204f211fa51SJoe Eykholt struct kref kref; 20542e9a92fSRobert Love enum fc_rport_state rp_state; 206f211fa51SJoe Eykholt struct fc_rport_identifiers ids; 20742e9a92fSRobert Love u16 flags; 20842e9a92fSRobert Love u16 max_seq; 2090f6c6149SJoe Eykholt u16 disc_id; 210f211fa51SJoe Eykholt u16 maxframe_size; 21142e9a92fSRobert Love unsigned int retries; 212f034260dSJoe Eykholt unsigned int major_retries; 21342e9a92fSRobert Love unsigned int e_d_tov; 21442e9a92fSRobert Love unsigned int r_a_tov; 21542e9a92fSRobert Love struct mutex rp_mutex; 21642e9a92fSRobert Love struct delayed_work retry_work; 21742e9a92fSRobert Love enum fc_rport_event event; 21842e9a92fSRobert Love struct fc_rport_operations *ops; 21942e9a92fSRobert Love struct list_head peers; 22042e9a92fSRobert Love struct work_struct event_work; 221f211fa51SJoe Eykholt u32 supported_classes; 22296ad8464SJoe Eykholt u16 prli_count; 22342e90414SJoe Eykholt struct rcu_head rcu; 22475a2792dSBhanu Prakash Gollapudi u16 sp_features; 22575a2792dSBhanu Prakash Gollapudi u8 spp_type; 22675a2792dSBhanu Prakash Gollapudi void (*lld_event_callback)(struct fc_lport *, 22775a2792dSBhanu Prakash Gollapudi struct fc_rport_priv *, 22875a2792dSBhanu Prakash Gollapudi enum fc_rport_event); 22942e9a92fSRobert Love }; 23042e9a92fSRobert Love 2313a3b42bfSRobert Love /** 2321bd49b48SVasu Dev * struct fc_stats - fc stats structure 2333a3b42bfSRobert Love * @SecondsSinceLastReset: Seconds since the last reset 2343a3b42bfSRobert Love * @TxFrames: Number of transmitted frames 2353a3b42bfSRobert Love * @TxWords: Number of transmitted words 2363a3b42bfSRobert Love * @RxFrames: Number of received frames 2373a3b42bfSRobert Love * @RxWords: Number of received words 2383a3b42bfSRobert Love * @ErrorFrames: Number of received error frames 2393a3b42bfSRobert Love * @DumpedFrames: Number of dumped frames 2400f02a665SVasu Dev * @FcpPktAllocFails: Number of fcp packet allocation failures 2410f02a665SVasu Dev * @FcpPktAborts: Number of fcp packet aborts 2420f02a665SVasu Dev * @FcpFrameAllocFails: Number of fcp frame allocation failures 2433a3b42bfSRobert Love * @LinkFailureCount: Number of link failures 2443a3b42bfSRobert Love * @LossOfSignalCount: Number for signal losses 2453a3b42bfSRobert Love * @InvalidTxWordCount: Number of invalid transmitted words 2463a3b42bfSRobert Love * @InvalidCRCCount: Number of invalid CRCs 2473a3b42bfSRobert Love * @InputRequests: Number of input requests 2483a3b42bfSRobert Love * @OutputRequests: Number of output requests 2493a3b42bfSRobert Love * @ControlRequests: Number of control requests 2505f0e385fSJoe Eykholt * @InputBytes: Number of received bytes 2515f0e385fSJoe Eykholt * @OutputBytes: Number of transmitted bytes 2526580bbd0SYi Zou * @VLinkFailureCount: Number of virtual link failures 2536580bbd0SYi Zou * @MissDiscAdvCount: Number of missing FIP discovery advertisement 25442e9a92fSRobert Love */ 2551bd49b48SVasu Dev struct fc_stats { 25642e9a92fSRobert Love u64 SecondsSinceLastReset; 25742e9a92fSRobert Love u64 TxFrames; 25842e9a92fSRobert Love u64 TxWords; 25942e9a92fSRobert Love u64 RxFrames; 26042e9a92fSRobert Love u64 RxWords; 26142e9a92fSRobert Love u64 ErrorFrames; 26242e9a92fSRobert Love u64 DumpedFrames; 2630f02a665SVasu Dev u64 FcpPktAllocFails; 2640f02a665SVasu Dev u64 FcpPktAborts; 2650f02a665SVasu Dev u64 FcpFrameAllocFails; 26642e9a92fSRobert Love u64 LinkFailureCount; 26742e9a92fSRobert Love u64 LossOfSignalCount; 26842e9a92fSRobert Love u64 InvalidTxWordCount; 26942e9a92fSRobert Love u64 InvalidCRCCount; 27042e9a92fSRobert Love u64 InputRequests; 27142e9a92fSRobert Love u64 OutputRequests; 27242e9a92fSRobert Love u64 ControlRequests; 2735f0e385fSJoe Eykholt u64 InputBytes; 2745f0e385fSJoe Eykholt u64 OutputBytes; 2756580bbd0SYi Zou u64 VLinkFailureCount; 2766580bbd0SYi Zou u64 MissDiscAdvCount; 27742e9a92fSRobert Love }; 27842e9a92fSRobert Love 2793a3b42bfSRobert Love /** 2803a3b42bfSRobert Love * struct fc_seq_els_data - ELS data used for passing ELS specific responses 2813a3b42bfSRobert Love * @reason: The reason for rejection 28225985edcSLucas De Marchi * @explan: The explanation of the rejection 2833a3b42bfSRobert Love * 2843a3b42bfSRobert Love * Mainly used by the exchange manager layer. 28542e9a92fSRobert Love */ 28642e9a92fSRobert Love struct fc_seq_els_data { 28742e9a92fSRobert Love enum fc_els_rjt_reason reason; 28842e9a92fSRobert Love enum fc_els_rjt_explan explan; 28942e9a92fSRobert Love }; 29042e9a92fSRobert Love 2913a3b42bfSRobert Love /** 2923a3b42bfSRobert Love * struct fc_fcp_pkt - FCP request structure (one for each scsi_cmnd request) 2933a3b42bfSRobert Love * @lp: The associated local port 2943a3b42bfSRobert Love * @state: The state of the I/O 2953a3b42bfSRobert Love * @ref_cnt: Reference count 2963a3b42bfSRobert Love * @scsi_pkt_lock: Lock to protect the SCSI packet (must be taken before the 2973a3b42bfSRobert Love * host_lock if both are to be held at the same time) 2983a3b42bfSRobert Love * @cmd: The SCSI command (set and clear with the host_lock held) 2993a3b42bfSRobert Love * @list: Tracks queued commands (accessed with the host_lock held) 3003a3b42bfSRobert Love * @timer: The command timer 3013a3b42bfSRobert Love * @tm_done: Completion indicator 3023a3b42bfSRobert Love * @wait_for_comp: Indicator to wait for completion of the I/O (in jiffies) 3033a3b42bfSRobert Love * @data_len: The length of the data 3043a3b42bfSRobert Love * @cdb_cmd: The CDB command 3053a3b42bfSRobert Love * @xfer_len: The transfer length 3063a3b42bfSRobert Love * @xfer_ddp: Indicates if this transfer used DDP (XID of the exchange 3073a3b42bfSRobert Love * will be set here if DDP was setup) 3083a3b42bfSRobert Love * @xfer_contig_end: The offset into the buffer if the buffer is contiguous 3093a3b42bfSRobert Love * (Tx and Rx) 3103a3b42bfSRobert Love * @max_payload: The maximum payload size (in bytes) 3113a3b42bfSRobert Love * @io_status: SCSI result (upper 24 bits) 3123a3b42bfSRobert Love * @cdb_status: CDB status 3133a3b42bfSRobert Love * @status_code: FCP I/O status 3143a3b42bfSRobert Love * @scsi_comp_flags: Completion flags (bit 3 Underrun bit 2: overrun) 3153a3b42bfSRobert Love * @req_flags: Request flags (bit 0: read bit:1 write) 3163a3b42bfSRobert Love * @scsi_resid: SCSI residule length 3173a3b42bfSRobert Love * @rport: The remote port that the SCSI command is targeted at 3183a3b42bfSRobert Love * @seq_ptr: The sequence that will carry the SCSI command 3193a3b42bfSRobert Love * @recov_retry: Number of recovery retries 3203a3b42bfSRobert Love * @recov_seq: The sequence for REC or SRR 32142e9a92fSRobert Love */ 32242e9a92fSRobert Love struct fc_fcp_pkt { 3233a3b42bfSRobert Love spinlock_t scsi_pkt_lock; 324ed26cfecSVasu Dev atomic_t ref_cnt; 325ed26cfecSVasu Dev 326ed26cfecSVasu Dev /* SCSI command and data transfer information */ 327ed26cfecSVasu Dev u32 data_len; 3283a3b42bfSRobert Love 3293a3b42bfSRobert Love /* SCSI I/O related information */ 3303a3b42bfSRobert Love struct scsi_cmnd *cmd; 3313a3b42bfSRobert Love struct list_head list; 3323a3b42bfSRobert Love 333ed26cfecSVasu Dev /* Housekeeping information */ 334ed26cfecSVasu Dev struct fc_lport *lp; 335ed26cfecSVasu Dev u8 state; 33642e9a92fSRobert Love 3373a3b42bfSRobert Love /* SCSI/FCP return status */ 33842e9a92fSRobert Love u8 cdb_status; 3393a3b42bfSRobert Love u8 status_code; 34042e9a92fSRobert Love u8 scsi_comp_flags; 341ed26cfecSVasu Dev u32 io_status; 3423a3b42bfSRobert Love u32 req_flags; 3433a3b42bfSRobert Love u32 scsi_resid; 34442e9a92fSRobert Love 345ed26cfecSVasu Dev /* Transport related veriables */ 346ed26cfecSVasu Dev size_t xfer_len; 347ed26cfecSVasu Dev struct fcp_cmnd cdb_cmd; 348ed26cfecSVasu Dev u32 xfer_contig_end; 349ed26cfecSVasu Dev u16 max_payload; 350ed26cfecSVasu Dev u16 xfer_ddp; 351ed26cfecSVasu Dev 3523a3b42bfSRobert Love /* Associated structures */ 3533a3b42bfSRobert Love struct fc_rport *rport; 3543a3b42bfSRobert Love struct fc_seq *seq_ptr; 3553a3b42bfSRobert Love 356ed26cfecSVasu Dev /* Timeout/error related information */ 357ed26cfecSVasu Dev struct timer_list timer; 358ed26cfecSVasu Dev int wait_for_comp; 359ad3120cfSHannes Reinecke int timer_delay; 360ed26cfecSVasu Dev u32 recov_retry; 3613a3b42bfSRobert Love struct fc_seq *recov_seq; 362ed26cfecSVasu Dev struct completion tm_done; 363ed26cfecSVasu Dev } ____cacheline_aligned_in_smp; 36442e9a92fSRobert Love 36542e9a92fSRobert Love /* 36642e9a92fSRobert Love * Structure and function definitions for managing Fibre Channel Exchanges 36742e9a92fSRobert Love * and Sequences 36842e9a92fSRobert Love * 36942e9a92fSRobert Love * fc_exch holds state for one exchange and links to its active sequence. 37042e9a92fSRobert Love * 37142e9a92fSRobert Love * fc_seq holds the state for an individual sequence. 37242e9a92fSRobert Love */ 37342e9a92fSRobert Love 37442e9a92fSRobert Love struct fc_exch_mgr; 37596316099SVasu Dev struct fc_exch_mgr_anchor; 376e4bc50beSVasu Dev extern u16 fc_cpu_mask; /* cpu mask for possible cpus */ 37742e9a92fSRobert Love 3783a3b42bfSRobert Love /** 3793a3b42bfSRobert Love * struct fc_seq - FC sequence 3803a3b42bfSRobert Love * @id: The sequence ID 3813a3b42bfSRobert Love * @ssb_stat: Status flags for the sequence status block (SSB) 3823a3b42bfSRobert Love * @cnt: Number of frames sent so far 3833a3b42bfSRobert Love * @rec_data: FC-4 value for REC 38442e9a92fSRobert Love */ 38542e9a92fSRobert Love struct fc_seq { 3863a3b42bfSRobert Love u8 id; 3873a3b42bfSRobert Love u16 ssb_stat; 3883a3b42bfSRobert Love u16 cnt; 3893a3b42bfSRobert Love u32 rec_data; 39042e9a92fSRobert Love }; 39142e9a92fSRobert Love 39242e9a92fSRobert Love #define FC_EX_DONE (1 << 0) /* ep is completed */ 39342e9a92fSRobert Love #define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */ 3949ca1e182SHannes Reinecke #define FC_EX_QUARANTINE (1 << 2) /* exch is quarantined */ 39542e9a92fSRobert Love 3963a3b42bfSRobert Love /** 3973a3b42bfSRobert Love * struct fc_exch - Fibre Channel Exchange 3983a3b42bfSRobert Love * @em: Exchange manager 3993a3b42bfSRobert Love * @pool: Exchange pool 4003a3b42bfSRobert Love * @state: The exchange's state 4013a3b42bfSRobert Love * @xid: The exchange ID 4023a3b42bfSRobert Love * @ex_list: Handle used by the EM to track free exchanges 4033a3b42bfSRobert Love * @ex_lock: Lock that protects the exchange 4043a3b42bfSRobert Love * @ex_refcnt: Reference count 4053a3b42bfSRobert Love * @timeout_work: Handle for timeout handler 4063a3b42bfSRobert Love * @lp: The local port that this exchange is on 4073a3b42bfSRobert Love * @oxid: Originator's exchange ID 4083a3b42bfSRobert Love * @rxid: Responder's exchange ID 4093a3b42bfSRobert Love * @oid: Originator's FCID 4103a3b42bfSRobert Love * @sid: Source FCID 4113a3b42bfSRobert Love * @did: Destination FCID 4123a3b42bfSRobert Love * @esb_stat: ESB exchange status 4133a3b42bfSRobert Love * @r_a_tov: Resouce allocation time out value (in msecs) 4143a3b42bfSRobert Love * @seq_id: The next sequence ID to use 415f60e12e9SJoe Eykholt * @encaps: encapsulation information for lower-level driver 4163a3b42bfSRobert Love * @f_ctl: F_CTL flags for the sequence 4173a3b42bfSRobert Love * @fh_type: The frame type 4183a3b42bfSRobert Love * @class: The class of service 4193a3b42bfSRobert Love * @seq: The sequence in use on this exchange 4207030fd62SBart Van Assche * @resp_active: Number of tasks that are concurrently executing @resp(). 4217030fd62SBart Van Assche * @resp_task: If @resp_active > 0, either the task executing @resp(), the 4227030fd62SBart Van Assche * task that has been interrupted to execute the soft-IRQ 4237030fd62SBart Van Assche * executing @resp() or NULL if more than one task is executing 4247030fd62SBart Van Assche * @resp concurrently. 4257030fd62SBart Van Assche * @resp_wq: Waitqueue for the tasks waiting on @resp_active. 4263a3b42bfSRobert Love * @resp: Callback for responses on this exchange 4273a3b42bfSRobert Love * @destructor: Called when destroying the exchange 4283a3b42bfSRobert Love * @arg: Passed as a void pointer to the resp() callback 42942e9a92fSRobert Love * 43042e9a92fSRobert Love * Locking notes: The ex_lock protects following items: 43142e9a92fSRobert Love * state, esb_stat, f_ctl, seq.ssb_stat 43242e9a92fSRobert Love * seq_id 43342e9a92fSRobert Love * sequence allocation 43442e9a92fSRobert Love */ 43542e9a92fSRobert Love struct fc_exch { 4363a3b42bfSRobert Love spinlock_t ex_lock; 4373a3b42bfSRobert Love atomic_t ex_refcnt; 43849a19889SVasu Dev enum fc_class class; 43949a19889SVasu Dev struct fc_exch_mgr *em; 44049a19889SVasu Dev struct fc_exch_pool *pool; 44149a19889SVasu Dev struct list_head ex_list; 4423a3b42bfSRobert Love struct fc_lport *lp; 44349a19889SVasu Dev u32 esb_stat; 44449a19889SVasu Dev u8 state; 44549a19889SVasu Dev u8 fh_type; 44649a19889SVasu Dev u8 seq_id; 44749a19889SVasu Dev u8 encaps; 44849a19889SVasu Dev u16 xid; 4493a3b42bfSRobert Love u16 oxid; 4503a3b42bfSRobert Love u16 rxid; 4513a3b42bfSRobert Love u32 oid; 4523a3b42bfSRobert Love u32 sid; 4533a3b42bfSRobert Love u32 did; 4543a3b42bfSRobert Love u32 r_a_tov; 4553a3b42bfSRobert Love u32 f_ctl; 4563a3b42bfSRobert Love struct fc_seq seq; 4577030fd62SBart Van Assche int resp_active; 4587030fd62SBart Van Assche struct task_struct *resp_task; 4597030fd62SBart Van Assche wait_queue_head_t resp_wq; 46042e9a92fSRobert Love void (*resp)(struct fc_seq *, struct fc_frame *, void *); 46142e9a92fSRobert Love void *arg; 4623a3b42bfSRobert Love void (*destructor)(struct fc_seq *, void *); 46349a19889SVasu Dev struct delayed_work timeout_work; 46449a19889SVasu Dev } ____cacheline_aligned_in_smp; 46542e9a92fSRobert Love #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq) 46642e9a92fSRobert Love 46742e9a92fSRobert Love 4683a3b42bfSRobert Love struct libfc_function_template { 46942e9a92fSRobert Love /* 47042e9a92fSRobert Love * Interface to send a FC frame 4710ae4d4aeSRobert Love * 4720ae4d4aeSRobert Love * STATUS: REQUIRED 47342e9a92fSRobert Love */ 4743a3b42bfSRobert Love int (*frame_send)(struct fc_lport *, struct fc_frame *); 47542e9a92fSRobert Love 47642e9a92fSRobert Love /* 4770ae4d4aeSRobert Love * Interface to send ELS/CT frames 4780ae4d4aeSRobert Love * 4790ae4d4aeSRobert Love * STATUS: OPTIONAL 48042e9a92fSRobert Love */ 4813a3b42bfSRobert Love struct fc_seq *(*elsct_send)(struct fc_lport *, u32 did, 4823a3b42bfSRobert Love struct fc_frame *, unsigned int op, 48342e9a92fSRobert Love void (*resp)(struct fc_seq *, 4843a3b42bfSRobert Love struct fc_frame *, void *arg), 48542e9a92fSRobert Love void *arg, u32 timer_msec); 48642e9a92fSRobert Love 48742e9a92fSRobert Love /* 48842e9a92fSRobert Love * Send the FC frame payload using a new exchange and sequence. 48942e9a92fSRobert Love * 49042e9a92fSRobert Love * The exchange response handler is set in this routine to resp() 49142e9a92fSRobert Love * function pointer. It can be called in two scenarios: if a timeout 49242e9a92fSRobert Love * occurs or if a response frame is received for the exchange. The 49342e9a92fSRobert Love * fc_frame pointer in response handler will also indicate timeout 49442e9a92fSRobert Love * as error using IS_ERR related macros. 49542e9a92fSRobert Love * 49642e9a92fSRobert Love * The exchange destructor handler is also set in this routine. 49742e9a92fSRobert Love * The destructor handler is invoked by EM layer when exchange 49842e9a92fSRobert Love * is about to free, this can be used by caller to free its 49942e9a92fSRobert Love * resources along with exchange free. 50042e9a92fSRobert Love * 50142e9a92fSRobert Love * The arg is passed back to resp and destructor handler. 50242e9a92fSRobert Love * 50342e9a92fSRobert Love * The timeout value (in msec) for an exchange is set if non zero 50442e9a92fSRobert Love * timer_msec argument is specified. The timer is canceled when 50542e9a92fSRobert Love * it fires or when the exchange is done. The exchange timeout handler 50642e9a92fSRobert Love * is registered by EM layer. 5070ae4d4aeSRobert Love * 5080ae4d4aeSRobert Love * STATUS: OPTIONAL 50942e9a92fSRobert Love */ 5103a3b42bfSRobert Love struct fc_seq *(*exch_seq_send)(struct fc_lport *, struct fc_frame *, 5113a3b42bfSRobert Love void (*resp)(struct fc_seq *, 5123a3b42bfSRobert Love struct fc_frame *, 5133a3b42bfSRobert Love void *), 5143a3b42bfSRobert Love void (*destructor)(struct fc_seq *, 5153a3b42bfSRobert Love void *), 5163a3b42bfSRobert Love void *, unsigned int timer_msec); 51742e9a92fSRobert Love 51842e9a92fSRobert Love /* 519b277d2aaSYi Zou * Sets up the DDP context for a given exchange id on the given 520b277d2aaSYi Zou * scatterlist if LLD supports DDP for large receive. 521b277d2aaSYi Zou * 522b277d2aaSYi Zou * STATUS: OPTIONAL 523b277d2aaSYi Zou */ 5243a3b42bfSRobert Love int (*ddp_setup)(struct fc_lport *, u16, struct scatterlist *, 5253a3b42bfSRobert Love unsigned int); 526b277d2aaSYi Zou /* 527b277d2aaSYi Zou * Completes the DDP transfer and returns the length of data DDPed 528b277d2aaSYi Zou * for the given exchange id. 529b277d2aaSYi Zou * 530b277d2aaSYi Zou * STATUS: OPTIONAL 531b277d2aaSYi Zou */ 5323a3b42bfSRobert Love int (*ddp_done)(struct fc_lport *, u16); 533b277d2aaSYi Zou /* 53433dc362bSYi Zou * Sets up the DDP context for a given exchange id on the given 5351bd49b48SVasu Dev * scatterlist if LLD supports DDP for target. 53633dc362bSYi Zou * 53733dc362bSYi Zou * STATUS: OPTIONAL 53833dc362bSYi Zou */ 53933dc362bSYi Zou int (*ddp_target)(struct fc_lport *, u16, struct scatterlist *, 54033dc362bSYi Zou unsigned int); 54133dc362bSYi Zou /* 542b84056bfSYi Zou * Allow LLD to fill its own Link Error Status Block 543b84056bfSYi Zou * 544b84056bfSYi Zou * STATUS: OPTIONAL 545b84056bfSYi Zou */ 546b84056bfSYi Zou void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb); 547b84056bfSYi Zou /* 5480ae4d4aeSRobert Love * Send a frame using an existing sequence and exchange. 5490ae4d4aeSRobert Love * 5500ae4d4aeSRobert Love * STATUS: OPTIONAL 55142e9a92fSRobert Love */ 5523a3b42bfSRobert Love int (*seq_send)(struct fc_lport *, struct fc_seq *, 5533a3b42bfSRobert Love struct fc_frame *); 55442e9a92fSRobert Love 55542e9a92fSRobert Love /* 55625985edcSLucas De Marchi * Send an ELS response using information from the received frame. 5570ae4d4aeSRobert Love * 5580ae4d4aeSRobert Love * STATUS: OPTIONAL 55942e9a92fSRobert Love */ 56092261156SJoe Eykholt void (*seq_els_rsp_send)(struct fc_frame *, enum fc_els_cmd, 5613a3b42bfSRobert Love struct fc_seq_els_data *); 56242e9a92fSRobert Love 56342e9a92fSRobert Love /* 56442e9a92fSRobert Love * Abort an exchange and sequence. Generally called because of a 56542e9a92fSRobert Love * exchange timeout or an abort from the upper layer. 56642e9a92fSRobert Love * 56742e9a92fSRobert Love * A timer_msec can be specified for abort timeout, if non-zero 56842e9a92fSRobert Love * timer_msec value is specified then exchange resp handler 56942e9a92fSRobert Love * will be called with timeout error if no response to abort. 5700ae4d4aeSRobert Love * 5710ae4d4aeSRobert Love * STATUS: OPTIONAL 57242e9a92fSRobert Love */ 5733a3b42bfSRobert Love int (*seq_exch_abort)(const struct fc_seq *, 57442e9a92fSRobert Love unsigned int timer_msec); 57542e9a92fSRobert Love 57642e9a92fSRobert Love /* 57742e9a92fSRobert Love * Indicate that an exchange/sequence tuple is complete and the memory 57842e9a92fSRobert Love * allocated for the related objects may be freed. 5790ae4d4aeSRobert Love * 5800ae4d4aeSRobert Love * STATUS: OPTIONAL 58142e9a92fSRobert Love */ 5823a3b42bfSRobert Love void (*exch_done)(struct fc_seq *); 58342e9a92fSRobert Love 58442e9a92fSRobert Love /* 58542e9a92fSRobert Love * Start a new sequence on the same exchange/sequence tuple. 5860ae4d4aeSRobert Love * 5870ae4d4aeSRobert Love * STATUS: OPTIONAL 58842e9a92fSRobert Love */ 5893a3b42bfSRobert Love struct fc_seq *(*seq_start_next)(struct fc_seq *); 59042e9a92fSRobert Love 59142e9a92fSRobert Love /* 5921a5c2d7eSJoe Eykholt * Set a response handler for the exchange of the sequence. 5931a5c2d7eSJoe Eykholt * 5941a5c2d7eSJoe Eykholt * STATUS: OPTIONAL 5951a5c2d7eSJoe Eykholt */ 5961a5c2d7eSJoe Eykholt void (*seq_set_resp)(struct fc_seq *sp, 5971a5c2d7eSJoe Eykholt void (*resp)(struct fc_seq *, struct fc_frame *, 5981a5c2d7eSJoe Eykholt void *), 5991a5c2d7eSJoe Eykholt void *arg); 6001a5c2d7eSJoe Eykholt 6011a5c2d7eSJoe Eykholt /* 602239e8104SJoe Eykholt * Assign a sequence for an incoming request frame. 603239e8104SJoe Eykholt * 604239e8104SJoe Eykholt * STATUS: OPTIONAL 605239e8104SJoe Eykholt */ 606239e8104SJoe Eykholt struct fc_seq *(*seq_assign)(struct fc_lport *, struct fc_frame *); 607239e8104SJoe Eykholt 608239e8104SJoe Eykholt /* 60962bdb645SJoe Eykholt * Release the reference on the sequence returned by seq_assign(). 61062bdb645SJoe Eykholt * 61162bdb645SJoe Eykholt * STATUS: OPTIONAL 61262bdb645SJoe Eykholt */ 61362bdb645SJoe Eykholt void (*seq_release)(struct fc_seq *); 61462bdb645SJoe Eykholt 61562bdb645SJoe Eykholt /* 61642e9a92fSRobert Love * Reset an exchange manager, completing all sequences and exchanges. 61742e9a92fSRobert Love * If s_id is non-zero, reset only exchanges originating from that FID. 61842e9a92fSRobert Love * If d_id is non-zero, reset only exchanges sending to that FID. 6190ae4d4aeSRobert Love * 6200ae4d4aeSRobert Love * STATUS: OPTIONAL 62142e9a92fSRobert Love */ 6223a3b42bfSRobert Love void (*exch_mgr_reset)(struct fc_lport *, u32 s_id, u32 d_id); 62342e9a92fSRobert Love 6240ae4d4aeSRobert Love /* 6250ae4d4aeSRobert Love * Flush the rport work queue. Generally used before shutdown. 6260ae4d4aeSRobert Love * 6270ae4d4aeSRobert Love * STATUS: OPTIONAL 62842e9a92fSRobert Love */ 6290ae4d4aeSRobert Love void (*rport_flush_queue)(void); 63042e9a92fSRobert Love 63142e9a92fSRobert Love /* 6320ae4d4aeSRobert Love * Receive a frame for a local port. 6330ae4d4aeSRobert Love * 6340ae4d4aeSRobert Love * STATUS: OPTIONAL 63542e9a92fSRobert Love */ 63692261156SJoe Eykholt void (*lport_recv)(struct fc_lport *, struct fc_frame *); 63742e9a92fSRobert Love 6380ae4d4aeSRobert Love /* 6390ae4d4aeSRobert Love * Reset the local port. 6400ae4d4aeSRobert Love * 6410ae4d4aeSRobert Love * STATUS: OPTIONAL 64242e9a92fSRobert Love */ 6430ae4d4aeSRobert Love int (*lport_reset)(struct fc_lport *); 64442e9a92fSRobert Love 64542e9a92fSRobert Love /* 646093bb6a2SJoe Eykholt * Set the local port FC_ID. 647093bb6a2SJoe Eykholt * 648093bb6a2SJoe Eykholt * This may be provided by the LLD to allow it to be 649093bb6a2SJoe Eykholt * notified when the local port is assigned a FC-ID. 650093bb6a2SJoe Eykholt * 651093bb6a2SJoe Eykholt * The frame, if non-NULL, is the incoming frame with the 652093bb6a2SJoe Eykholt * FLOGI LS_ACC or FLOGI, and may contain the granted MAC 653093bb6a2SJoe Eykholt * address for the LLD. The frame pointer may be NULL if 654093bb6a2SJoe Eykholt * no MAC is associated with this assignment (LOGO or PLOGI). 655093bb6a2SJoe Eykholt * 656093bb6a2SJoe Eykholt * If FC_ID is non-zero, r_a_tov and e_d_tov must be valid. 657093bb6a2SJoe Eykholt * 658093bb6a2SJoe Eykholt * Note: this is called with the local port mutex held. 659093bb6a2SJoe Eykholt * 660093bb6a2SJoe Eykholt * STATUS: OPTIONAL 661093bb6a2SJoe Eykholt */ 662093bb6a2SJoe Eykholt void (*lport_set_port_id)(struct fc_lport *, u32 port_id, 663093bb6a2SJoe Eykholt struct fc_frame *); 664093bb6a2SJoe Eykholt 665093bb6a2SJoe Eykholt /* 6669737e6a7SRobert Love * Create a remote port with a given port ID 6679737e6a7SRobert Love * 6689737e6a7SRobert Love * STATUS: OPTIONAL 6695101ff99SRobert Love */ 6709737e6a7SRobert Love struct fc_rport_priv *(*rport_create)(struct fc_lport *, u32); 6715101ff99SRobert Love 6725101ff99SRobert Love /* 67342e9a92fSRobert Love * Initiates the RP state machine. It is called from the LP module. 67442e9a92fSRobert Love * This function will issue the following commands to the N_Port 67542e9a92fSRobert Love * identified by the FC ID provided. 67642e9a92fSRobert Love * 67742e9a92fSRobert Love * - PLOGI 67842e9a92fSRobert Love * - PRLI 67942e9a92fSRobert Love * - RTV 6800ae4d4aeSRobert Love * 6810ae4d4aeSRobert Love * STATUS: OPTIONAL 68242e9a92fSRobert Love */ 6839fb9d328SJoe Eykholt int (*rport_login)(struct fc_rport_priv *); 68442e9a92fSRobert Love 68542e9a92fSRobert Love /* 68642e9a92fSRobert Love * Logoff, and remove the rport from the transport if 68742e9a92fSRobert Love * it had been added. This will send a LOGO to the target. 6880ae4d4aeSRobert Love * 6890ae4d4aeSRobert Love * STATUS: OPTIONAL 69042e9a92fSRobert Love */ 6919fb9d328SJoe Eykholt int (*rport_logoff)(struct fc_rport_priv *); 69242e9a92fSRobert Love 69342e9a92fSRobert Love /* 69425985edcSLucas De Marchi * Receive a request from a remote port. 6950ae4d4aeSRobert Love * 6960ae4d4aeSRobert Love * STATUS: OPTIONAL 69742e9a92fSRobert Love */ 69892261156SJoe Eykholt void (*rport_recv_req)(struct fc_lport *, struct fc_frame *); 69942e9a92fSRobert Love 7000ae4d4aeSRobert Love /* 7010ae4d4aeSRobert Love * lookup an rport by it's port ID. 7020ae4d4aeSRobert Love * 7030ae4d4aeSRobert Love * STATUS: OPTIONAL 70442e9a92fSRobert Love */ 7059fb9d328SJoe Eykholt struct fc_rport_priv *(*rport_lookup)(const struct fc_lport *, u32); 70642e9a92fSRobert Love 70742e9a92fSRobert Love /* 708f211fa51SJoe Eykholt * Destroy an rport after final kref_put(). 709f211fa51SJoe Eykholt * The argument is a pointer to the kref inside the fc_rport_priv. 710f211fa51SJoe Eykholt */ 711f211fa51SJoe Eykholt void (*rport_destroy)(struct kref *); 712f211fa51SJoe Eykholt 713f211fa51SJoe Eykholt /* 71475a2792dSBhanu Prakash Gollapudi * Callback routine after the remote port is logged in 71575a2792dSBhanu Prakash Gollapudi * 71675a2792dSBhanu Prakash Gollapudi * STATUS: OPTIONAL 71775a2792dSBhanu Prakash Gollapudi */ 71875a2792dSBhanu Prakash Gollapudi void (*rport_event_callback)(struct fc_lport *, 71975a2792dSBhanu Prakash Gollapudi struct fc_rport_priv *, 72075a2792dSBhanu Prakash Gollapudi enum fc_rport_event); 72175a2792dSBhanu Prakash Gollapudi 72275a2792dSBhanu Prakash Gollapudi /* 72342e9a92fSRobert Love * Send a fcp cmd from fsp pkt. 72442e9a92fSRobert Love * Called with the SCSI host lock unlocked and irqs disabled. 72542e9a92fSRobert Love * 72642e9a92fSRobert Love * The resp handler is called when FCP_RSP received. 72742e9a92fSRobert Love * 7280ae4d4aeSRobert Love * STATUS: OPTIONAL 72942e9a92fSRobert Love */ 7303a3b42bfSRobert Love int (*fcp_cmd_send)(struct fc_lport *, struct fc_fcp_pkt *, 7313a3b42bfSRobert Love void (*resp)(struct fc_seq *, struct fc_frame *, 7323a3b42bfSRobert Love void *)); 73342e9a92fSRobert Love 73442e9a92fSRobert Love /* 73525985edcSLucas De Marchi * Cleanup the FCP layer, used during link down and reset 7360ae4d4aeSRobert Love * 7370ae4d4aeSRobert Love * STATUS: OPTIONAL 73842e9a92fSRobert Love */ 7393a3b42bfSRobert Love void (*fcp_cleanup)(struct fc_lport *); 74042e9a92fSRobert Love 74142e9a92fSRobert Love /* 74242e9a92fSRobert Love * Abort all I/O on a local port 7430ae4d4aeSRobert Love * 7440ae4d4aeSRobert Love * STATUS: OPTIONAL 74542e9a92fSRobert Love */ 7463a3b42bfSRobert Love void (*fcp_abort_io)(struct fc_lport *); 74742e9a92fSRobert Love 7480ae4d4aeSRobert Love /* 7490ae4d4aeSRobert Love * Receive a request for the discovery layer. 7500ae4d4aeSRobert Love * 7510ae4d4aeSRobert Love * STATUS: OPTIONAL 75242e9a92fSRobert Love */ 75392261156SJoe Eykholt void (*disc_recv_req)(struct fc_lport *, struct fc_frame *); 75442e9a92fSRobert Love 75542e9a92fSRobert Love /* 75642e9a92fSRobert Love * Start discovery for a local port. 7570ae4d4aeSRobert Love * 7580ae4d4aeSRobert Love * STATUS: OPTIONAL 75942e9a92fSRobert Love */ 76042e9a92fSRobert Love void (*disc_start)(void (*disc_callback)(struct fc_lport *, 76142e9a92fSRobert Love enum fc_disc_event), 76242e9a92fSRobert Love struct fc_lport *); 76342e9a92fSRobert Love 76442e9a92fSRobert Love /* 76542e9a92fSRobert Love * Stop discovery for a given lport. This will remove 76642e9a92fSRobert Love * all discovered rports 7670ae4d4aeSRobert Love * 7680ae4d4aeSRobert Love * STATUS: OPTIONAL 76942e9a92fSRobert Love */ 77042e9a92fSRobert Love void (*disc_stop) (struct fc_lport *); 77142e9a92fSRobert Love 77242e9a92fSRobert Love /* 77342e9a92fSRobert Love * Stop discovery for a given lport. This will block 77442e9a92fSRobert Love * until all discovered rports are deleted from the 77542e9a92fSRobert Love * FC transport class 7760ae4d4aeSRobert Love * 7770ae4d4aeSRobert Love * STATUS: OPTIONAL 77842e9a92fSRobert Love */ 77942e9a92fSRobert Love void (*disc_stop_final) (struct fc_lport *); 78042e9a92fSRobert Love }; 78142e9a92fSRobert Love 7823a3b42bfSRobert Love /** 7833a3b42bfSRobert Love * struct fc_disc - Discovery context 7843a3b42bfSRobert Love * @retry_count: Number of retries 7853a3b42bfSRobert Love * @pending: 1 if discovery is pending, 0 if not 786c531b9b4SBhanu Prakash Gollapudi * @requested: 1 if discovery has been requested, 0 if not 7873a3b42bfSRobert Love * @seq_count: Number of sequences used for discovery 7883a3b42bfSRobert Love * @buf_len: Length of the discovery buffer 7893a3b42bfSRobert Love * @disc_id: Discovery ID 7903a3b42bfSRobert Love * @rports: List of discovered remote ports 7910685230cSJoe Eykholt * @priv: Private pointer for use by discovery code 7923a3b42bfSRobert Love * @disc_mutex: Mutex that protects the discovery context 7933a3b42bfSRobert Love * @partial_buf: Partial name buffer (if names are returned 7943a3b42bfSRobert Love * in multiple frames) 7953a3b42bfSRobert Love * @disc_work: handle for delayed work context 7963a3b42bfSRobert Love * @disc_callback: Callback routine called when discovery completes 7973a3b42bfSRobert Love */ 79842e9a92fSRobert Love struct fc_disc { 79942e9a92fSRobert Love unsigned char retry_count; 80042e9a92fSRobert Love unsigned char pending; 80142e9a92fSRobert Love unsigned char requested; 80242e9a92fSRobert Love unsigned short seq_count; 80342e9a92fSRobert Love unsigned char buf_len; 8040f6c6149SJoe Eykholt u16 disc_id; 80542e9a92fSRobert Love 80642e9a92fSRobert Love struct list_head rports; 8070685230cSJoe Eykholt void *priv; 80842e9a92fSRobert Love struct mutex disc_mutex; 8093a3b42bfSRobert Love struct fc_gpn_ft_resp partial_buf; 81042e9a92fSRobert Love struct delayed_work disc_work; 8113a3b42bfSRobert Love 8123a3b42bfSRobert Love void (*disc_callback)(struct fc_lport *, 8133a3b42bfSRobert Love enum fc_disc_event); 81442e9a92fSRobert Love }; 81542e9a92fSRobert Love 81670d53b04SJoe Eykholt /* 81770d53b04SJoe Eykholt * Local port notifier and events. 81870d53b04SJoe Eykholt */ 81970d53b04SJoe Eykholt extern struct blocking_notifier_head fc_lport_notifier_head; 82070d53b04SJoe Eykholt enum fc_lport_event { 82170d53b04SJoe Eykholt FC_LPORT_EV_ADD, 82270d53b04SJoe Eykholt FC_LPORT_EV_DEL, 82370d53b04SJoe Eykholt }; 82470d53b04SJoe Eykholt 8253a3b42bfSRobert Love /** 8263a3b42bfSRobert Love * struct fc_lport - Local port 8273a3b42bfSRobert Love * @host: The SCSI host associated with a local port 8283a3b42bfSRobert Love * @ema_list: Exchange manager anchor list 8293a3b42bfSRobert Love * @dns_rdata: The directory server remote port 830d78c317fSNeerav Parikh * @ms_rdata: The management server remote port 8313a3b42bfSRobert Love * @ptp_rdata: Point to point remote port 8323a3b42bfSRobert Love * @scsi_priv: FCP layer internal data 8333a3b42bfSRobert Love * @disc: Discovery context 8343a3b42bfSRobert Love * @vports: Child vports if N_Port 8353a3b42bfSRobert Love * @vport: Parent vport if VN_Port 8363a3b42bfSRobert Love * @tt: Libfc function template 8373a3b42bfSRobert Love * @link_up: Link state (1 = link up, 0 = link down) 8383a3b42bfSRobert Love * @qfull: Queue state (1 queue is full, 0 queue is not full) 8393a3b42bfSRobert Love * @state: Identifies the state 8403a3b42bfSRobert Love * @boot_time: Timestamp indicating when the local port came online 8413a3b42bfSRobert Love * @host_stats: SCSI host statistics 8421bd49b48SVasu Dev * @stats: FC local port stats (TODO separate libfc LLD stats) 8433a3b42bfSRobert Love * @retry_count: Number of retries in the current state 8447b2787ecSRobert Love * @port_id: FC Port ID 8453a3b42bfSRobert Love * @wwpn: World Wide Port Name 8463a3b42bfSRobert Love * @wwnn: World Wide Node Name 8473a3b42bfSRobert Love * @service_params: Common service parameters 8483a3b42bfSRobert Love * @e_d_tov: Error detection timeout value 8493a3b42bfSRobert Love * @r_a_tov: Resouce allocation timeout value 8503a3b42bfSRobert Love * @rnid_gen: RNID information 8513a3b42bfSRobert Love * @sg_supp: Indicates if scatter gather is supported 8523a3b42bfSRobert Love * @seq_offload: Indicates if sequence offload is supported 8533a3b42bfSRobert Love * @crc_offload: Indicates if CRC offload is supported 8543a3b42bfSRobert Love * @lro_enabled: Indicates if large receive offload is supported 8553a3b42bfSRobert Love * @does_npiv: Supports multiple vports 8563a3b42bfSRobert Love * @npiv_enabled: Switch/fabric allows NPIV 8573a3b42bfSRobert Love * @mfs: The maximum Fibre Channel payload size 8583a3b42bfSRobert Love * @max_retry_count: The maximum retry attempts 8593a3b42bfSRobert Love * @max_rport_retry_count: The maximum remote port retry attempts 860f90377abSJoe Eykholt * @rport_priv_size: Size needed by driver after struct fc_rport_priv 8613a3b42bfSRobert Love * @lro_xid: The maximum XID for LRO 8623a3b42bfSRobert Love * @lso_max: The maximum large offload send size 8633a3b42bfSRobert Love * @fcts: FC-4 type mask 8643a3b42bfSRobert Love * @lp_mutex: Mutex to protect the local port 86570d53b04SJoe Eykholt * @list: Linkage on list of vport peers 8663a3b42bfSRobert Love * @retry_work: Handle to local port for delayed retry context 867baf9fdf0SJoe Eykholt * @prov: Pointers available for use by passive FC-4 providers 86870d53b04SJoe Eykholt * @lport_list: Linkage on module-wide list of local ports 8693a3b42bfSRobert Love */ 87042e9a92fSRobert Love struct fc_lport { 87142e9a92fSRobert Love /* Associations */ 87242e9a92fSRobert Love struct Scsi_Host *host; 87396316099SVasu Dev struct list_head ema_list; 8743a3b42bfSRobert Love struct fc_rport_priv *dns_rdata; 875d78c317fSNeerav Parikh struct fc_rport_priv *ms_rdata; 8763a3b42bfSRobert Love struct fc_rport_priv *ptp_rdata; 87742e9a92fSRobert Love void *scsi_priv; 87842e9a92fSRobert Love struct fc_disc disc; 87942e9a92fSRobert Love 8803a3b42bfSRobert Love /* Virtual port information */ 8813a3b42bfSRobert Love struct list_head vports; 8823a3b42bfSRobert Love struct fc_vport *vport; 8833a3b42bfSRobert Love 88442e9a92fSRobert Love /* Operational Information */ 88542e9a92fSRobert Love struct libfc_function_template tt; 886bc0e17f6SVasu Dev u8 link_up; 887bc0e17f6SVasu Dev u8 qfull; 8889a6cf881SHannes Reinecke u16 vlan; 88942e9a92fSRobert Love enum fc_lport_state state; 89042e9a92fSRobert Love unsigned long boot_time; 89142e9a92fSRobert Love struct fc_host_statistics host_stats; 8921bd49b48SVasu Dev struct fc_stats __percpu *stats; 89342e9a92fSRobert Love u8 retry_count; 89442e9a92fSRobert Love 8953a3b42bfSRobert Love /* Fabric information */ 8967b2787ecSRobert Love u32 port_id; 8973a3b42bfSRobert Love u64 wwpn; 8983a3b42bfSRobert Love u64 wwnn; 89942e9a92fSRobert Love unsigned int service_params; 90042e9a92fSRobert Love unsigned int e_d_tov; 90142e9a92fSRobert Love unsigned int r_a_tov; 9023a3b42bfSRobert Love struct fc_els_rnid_gen rnid_gen; 9033a3b42bfSRobert Love 9043a3b42bfSRobert Love /* Capabilities */ 9053a3b42bfSRobert Love u32 sg_supp:1; 9063a3b42bfSRobert Love u32 seq_offload:1; 9073a3b42bfSRobert Love u32 crc_offload:1; 9083a3b42bfSRobert Love u32 lro_enabled:1; 9093a3b42bfSRobert Love u32 does_npiv:1; 9103a3b42bfSRobert Love u32 npiv_enabled:1; 9113726f358SJoe Eykholt u32 point_to_multipoint:1; 912d78c317fSNeerav Parikh u32 fdmi_enabled:1; 9133a3b42bfSRobert Love u32 mfs; 91442e9a92fSRobert Love u8 max_retry_count; 915a3666955SAbhijeet Joglekar u8 max_rport_retry_count; 916f90377abSJoe Eykholt u16 rport_priv_size; 91742e9a92fSRobert Love u16 link_speed; 91842e9a92fSRobert Love u16 link_supported_speeds; 9193a3b42bfSRobert Love u16 lro_xid; 9203a3b42bfSRobert Love unsigned int lso_max; 9213a3b42bfSRobert Love struct fc_ns_fts fcts; 92242e9a92fSRobert Love 92342e9a92fSRobert Love /* Miscellaneous */ 9243a3b42bfSRobert Love struct mutex lp_mutex; 9253a3b42bfSRobert Love struct list_head list; 92642e9a92fSRobert Love struct delayed_work retry_work; 927baf9fdf0SJoe Eykholt void *prov[FC_FC4_PROV_SIZE]; 92870d53b04SJoe Eykholt struct list_head lport_list; 92942e9a92fSRobert Love }; 93042e9a92fSRobert Love 93196ad8464SJoe Eykholt /** 93296ad8464SJoe Eykholt * struct fc4_prov - FC-4 provider registration 93396ad8464SJoe Eykholt * @prli: Handler for incoming PRLI 93496ad8464SJoe Eykholt * @prlo: Handler for session reset 93596ad8464SJoe Eykholt * @recv: Handler for incoming request 93696ad8464SJoe Eykholt * @module: Pointer to module. May be NULL. 93796ad8464SJoe Eykholt */ 93896ad8464SJoe Eykholt struct fc4_prov { 93996ad8464SJoe Eykholt int (*prli)(struct fc_rport_priv *, u32 spp_len, 94096ad8464SJoe Eykholt const struct fc_els_spp *spp_in, 94196ad8464SJoe Eykholt struct fc_els_spp *spp_out); 94296ad8464SJoe Eykholt void (*prlo)(struct fc_rport_priv *); 94396ad8464SJoe Eykholt void (*recv)(struct fc_lport *, struct fc_frame *); 94496ad8464SJoe Eykholt struct module *module; 94596ad8464SJoe Eykholt }; 94696ad8464SJoe Eykholt 94796ad8464SJoe Eykholt /* 94896ad8464SJoe Eykholt * Register FC-4 provider with libfc. 94996ad8464SJoe Eykholt */ 95096ad8464SJoe Eykholt int fc_fc4_register_provider(enum fc_fh_type type, struct fc4_prov *); 95196ad8464SJoe Eykholt void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *); 95296ad8464SJoe Eykholt 95334f42a07SRobert Love /* 95442e9a92fSRobert Love * FC_LPORT HELPER FUNCTIONS 95542e9a92fSRobert Love *****************************/ 9563a3b42bfSRobert Love 9573a3b42bfSRobert Love /** 9583a3b42bfSRobert Love * fc_lport_test_ready() - Determine if a local port is in the READY state 9593a3b42bfSRobert Love * @lport: The local port to test 9603a3b42bfSRobert Love */ 9613a3b42bfSRobert Love static inline int fc_lport_test_ready(struct fc_lport *lport) 96242e9a92fSRobert Love { 9633a3b42bfSRobert Love return lport->state == LPORT_ST_READY; 96442e9a92fSRobert Love } 96542e9a92fSRobert Love 9663a3b42bfSRobert Love /** 9673a3b42bfSRobert Love * fc_set_wwnn() - Set the World Wide Node Name of a local port 9683a3b42bfSRobert Love * @lport: The local port whose WWNN is to be set 9693a3b42bfSRobert Love * @wwnn: The new WWNN 9703a3b42bfSRobert Love */ 9713a3b42bfSRobert Love static inline void fc_set_wwnn(struct fc_lport *lport, u64 wwnn) 97242e9a92fSRobert Love { 9733a3b42bfSRobert Love lport->wwnn = wwnn; 97442e9a92fSRobert Love } 97542e9a92fSRobert Love 9763a3b42bfSRobert Love /** 9773a3b42bfSRobert Love * fc_set_wwpn() - Set the World Wide Port Name of a local port 9783a3b42bfSRobert Love * @lport: The local port whose WWPN is to be set 9793a3b42bfSRobert Love * @wwnn: The new WWPN 9803a3b42bfSRobert Love */ 9813a3b42bfSRobert Love static inline void fc_set_wwpn(struct fc_lport *lport, u64 wwnn) 98242e9a92fSRobert Love { 9833a3b42bfSRobert Love lport->wwpn = wwnn; 98442e9a92fSRobert Love } 98542e9a92fSRobert Love 9863a3b42bfSRobert Love /** 9873a3b42bfSRobert Love * fc_lport_state_enter() - Change a local port's state 9883a3b42bfSRobert Love * @lport: The local port whose state is to change 9893a3b42bfSRobert Love * @state: The new state 9903a3b42bfSRobert Love */ 9913a3b42bfSRobert Love static inline void fc_lport_state_enter(struct fc_lport *lport, 99242e9a92fSRobert Love enum fc_lport_state state) 99342e9a92fSRobert Love { 9943a3b42bfSRobert Love if (state != lport->state) 9953a3b42bfSRobert Love lport->retry_count = 0; 9963a3b42bfSRobert Love lport->state = state; 99742e9a92fSRobert Love } 99842e9a92fSRobert Love 9993a3b42bfSRobert Love /** 10003a3b42bfSRobert Love * fc_lport_init_stats() - Allocate per-CPU statistics for a local port 10013a3b42bfSRobert Love * @lport: The local port whose statistics are to be initialized 10023a3b42bfSRobert Love */ 10033a3b42bfSRobert Love static inline int fc_lport_init_stats(struct fc_lport *lport) 1004582b45bcSRobert Love { 10051bd49b48SVasu Dev lport->stats = alloc_percpu(struct fc_stats); 10061bd49b48SVasu Dev if (!lport->stats) 1007582b45bcSRobert Love return -ENOMEM; 1008582b45bcSRobert Love return 0; 1009582b45bcSRobert Love } 1010582b45bcSRobert Love 10113a3b42bfSRobert Love /** 10123a3b42bfSRobert Love * fc_lport_free_stats() - Free memory for a local port's statistics 10133a3b42bfSRobert Love * @lport: The local port whose statistics are to be freed 10143a3b42bfSRobert Love */ 10153a3b42bfSRobert Love static inline void fc_lport_free_stats(struct fc_lport *lport) 1016582b45bcSRobert Love { 10171bd49b48SVasu Dev free_percpu(lport->stats); 1018a0a25da2SVasu Dev } 1019a0a25da2SVasu Dev 1020a0a25da2SVasu Dev /** 10213a3b42bfSRobert Love * lport_priv() - Return the private data from a local port 10223a3b42bfSRobert Love * @lport: The local port whose private data is to be retreived 10233a3b42bfSRobert Love */ 10243a3b42bfSRobert Love static inline void *lport_priv(const struct fc_lport *lport) 10253a3b42bfSRobert Love { 10263a3b42bfSRobert Love return (void *)(lport + 1); 10273a3b42bfSRobert Love } 10283a3b42bfSRobert Love 10293a3b42bfSRobert Love /** 10303a3b42bfSRobert Love * libfc_host_alloc() - Allocate a Scsi_Host with room for a local port and 10313a3b42bfSRobert Love * LLD private data 10323a3b42bfSRobert Love * @sht: The SCSI host template 10333a3b42bfSRobert Love * @priv_size: Size of private data 1034a0a25da2SVasu Dev * 103586221969SChris Leech * Returns: libfc lport 1036a0a25da2SVasu Dev */ 103786221969SChris Leech static inline struct fc_lport * 1038a0a25da2SVasu Dev libfc_host_alloc(struct scsi_host_template *sht, int priv_size) 1039a0a25da2SVasu Dev { 104086221969SChris Leech struct fc_lport *lport; 104186221969SChris Leech struct Scsi_Host *shost; 104286221969SChris Leech 104386221969SChris Leech shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size); 104486221969SChris Leech if (!shost) 104586221969SChris Leech return NULL; 104686221969SChris Leech lport = shost_priv(shost); 104786221969SChris Leech lport->host = shost; 104886221969SChris Leech INIT_LIST_HEAD(&lport->ema_list); 1049174e1ebfSChris Leech INIT_LIST_HEAD(&lport->vports); 105086221969SChris Leech return lport; 1051a0a25da2SVasu Dev } 105242e9a92fSRobert Love 105334f42a07SRobert Love /* 10543a3b42bfSRobert Love * FC_FCP HELPER FUNCTIONS 10553a3b42bfSRobert Love *****************************/ 10563a3b42bfSRobert Love static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp) 10573a3b42bfSRobert Love { 10583a3b42bfSRobert Love if (fsp && fsp->cmd) 10593a3b42bfSRobert Love return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE; 10603a3b42bfSRobert Love return false; 10613a3b42bfSRobert Love } 10623a3b42bfSRobert Love 10633a3b42bfSRobert Love /* 106442e9a92fSRobert Love * LOCAL PORT LAYER 106542e9a92fSRobert Love *****************************/ 10663a3b42bfSRobert Love int fc_lport_init(struct fc_lport *); 10673a3b42bfSRobert Love int fc_lport_destroy(struct fc_lport *); 10683a3b42bfSRobert Love int fc_fabric_logoff(struct fc_lport *); 10693a3b42bfSRobert Love int fc_fabric_login(struct fc_lport *); 10708faecddbSChris Leech void __fc_linkup(struct fc_lport *); 107142e9a92fSRobert Love void fc_linkup(struct fc_lport *); 10728faecddbSChris Leech void __fc_linkdown(struct fc_lport *); 107342e9a92fSRobert Love void fc_linkdown(struct fc_lport *); 10743a3b42bfSRobert Love void fc_vport_setlink(struct fc_lport *); 10753a3b42bfSRobert Love void fc_vports_linkchange(struct fc_lport *); 107642e9a92fSRobert Love int fc_lport_config(struct fc_lport *); 107742e9a92fSRobert Love int fc_lport_reset(struct fc_lport *); 10783a3b42bfSRobert Love int fc_set_mfs(struct fc_lport *, u32 mfs); 10793a3b42bfSRobert Love struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize); 10803a3b42bfSRobert Love struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id); 10813a3b42bfSRobert Love int fc_lport_bsg_request(struct fc_bsg_job *); 10823726f358SJoe Eykholt void fc_lport_set_local_id(struct fc_lport *, u32 port_id); 108370d53b04SJoe Eykholt void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *); 1084a51ab396SSteve Ma 1085a51ab396SSteve Ma /* 108642e9a92fSRobert Love * REMOTE PORT LAYER 108742e9a92fSRobert Love *****************************/ 10883a3b42bfSRobert Love int fc_rport_init(struct fc_lport *); 10893a3b42bfSRobert Love void fc_rport_terminate_io(struct fc_rport *); 109042e9a92fSRobert Love 109134f42a07SRobert Love /* 109242e9a92fSRobert Love * DISCOVERY LAYER 109342e9a92fSRobert Love *****************************/ 10940807619dSRobert Love void fc_disc_init(struct fc_lport *); 10950807619dSRobert Love void fc_disc_config(struct fc_lport *, void *); 109642e9a92fSRobert Love 10970685230cSJoe Eykholt static inline struct fc_lport *fc_disc_lport(struct fc_disc *disc) 10980685230cSJoe Eykholt { 10990685230cSJoe Eykholt return container_of(disc, struct fc_lport, disc); 11000685230cSJoe Eykholt } 11010685230cSJoe Eykholt 110234f42a07SRobert Love /* 11033a3b42bfSRobert Love * FCP LAYER 110442e9a92fSRobert Love *****************************/ 110542e9a92fSRobert Love int fc_fcp_init(struct fc_lport *); 110642e9a92fSRobert Love void fc_fcp_destroy(struct fc_lport *); 110742e9a92fSRobert Love 110834f42a07SRobert Love /* 11093a3b42bfSRobert Love * SCSI INTERACTION LAYER 11103a3b42bfSRobert Love *****************************/ 1111f281233dSJeff Garzik int fc_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); 11123a3b42bfSRobert Love int fc_eh_abort(struct scsi_cmnd *); 11133a3b42bfSRobert Love int fc_eh_device_reset(struct scsi_cmnd *); 11143a3b42bfSRobert Love int fc_eh_host_reset(struct scsi_cmnd *); 11153a3b42bfSRobert Love int fc_slave_alloc(struct scsi_device *); 11163a3b42bfSRobert Love 11173a3b42bfSRobert Love /* 111842e9a92fSRobert Love * ELS/CT interface 111942e9a92fSRobert Love *****************************/ 11203a3b42bfSRobert Love int fc_elsct_init(struct fc_lport *); 11213a3b42bfSRobert Love struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did, 11223a3b42bfSRobert Love struct fc_frame *, 112311b56188SChris Leech unsigned int op, 112411b56188SChris Leech void (*resp)(struct fc_seq *, 11253a3b42bfSRobert Love struct fc_frame *, 112611b56188SChris Leech void *arg), 112711b56188SChris Leech void *arg, u32 timer_msec); 112811b56188SChris Leech void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *); 112911b56188SChris Leech void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *); 113024f089e2SJoe Eykholt void fc_fill_reply_hdr(struct fc_frame *, const struct fc_frame *, 113124f089e2SJoe Eykholt enum fc_rctl, u32 parm_offset); 113224f089e2SJoe Eykholt void fc_fill_hdr(struct fc_frame *, const struct fc_frame *, 113324f089e2SJoe Eykholt enum fc_rctl, u32 f_ctl, u16 seq_cnt, u32 parm_offset); 113442e9a92fSRobert Love 113542e9a92fSRobert Love 113634f42a07SRobert Love /* 113742e9a92fSRobert Love * EXCHANGE MANAGER LAYER 113842e9a92fSRobert Love *****************************/ 11393a3b42bfSRobert Love int fc_exch_init(struct fc_lport *); 11404e5fae7aSVasu Dev void fc_exch_update_stats(struct fc_lport *lport); 11413a3b42bfSRobert Love struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *, 11423a3b42bfSRobert Love struct fc_exch_mgr *, 114396316099SVasu Dev bool (*match)(struct fc_frame *)); 11443a3b42bfSRobert Love void fc_exch_mgr_del(struct fc_exch_mgr_anchor *); 1145174e1ebfSChris Leech int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst); 11463a3b42bfSRobert Love struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class, 11473a3b42bfSRobert Love u16 min_xid, u16 max_xid, 114852ff878cSVasu Dev bool (*match)(struct fc_frame *)); 11493a3b42bfSRobert Love void fc_exch_mgr_free(struct fc_lport *); 11503a3b42bfSRobert Love void fc_exch_recv(struct fc_lport *, struct fc_frame *); 11511f6ff364SAbhijeet Joglekar void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id); 115242e9a92fSRobert Love 115342e9a92fSRobert Love /* 115442e9a92fSRobert Love * Functions for fc_functions_template 115542e9a92fSRobert Love */ 11563a3b42bfSRobert Love void fc_get_host_speed(struct Scsi_Host *); 11573a3b42bfSRobert Love void fc_get_host_port_state(struct Scsi_Host *); 11583a3b42bfSRobert Love void fc_set_rport_loss_tmo(struct fc_rport *, u32 timeout); 115942e9a92fSRobert Love struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *); 116042e9a92fSRobert Love 116142e9a92fSRobert Love #endif /* _LIBFC_H_ */ 1162