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 */ 4742e9a92fSRobert Love 483a3b42bfSRobert Love /** 493a3b42bfSRobert Love * enum fc_lport_state - Local port states 503a3b42bfSRobert Love * @LPORT_ST_DISABLED: Disabled 513a3b42bfSRobert Love * @LPORT_ST_FLOGI: Fabric login (FLOGI) sent 523a3b42bfSRobert Love * @LPORT_ST_DNS: Waiting for name server remote port to become ready 533a3b42bfSRobert Love * @LPORT_ST_RPN_ID: Register port name by ID (RPN_ID) sent 543a3b42bfSRobert Love * @LPORT_ST_RFT_ID: Register Fibre Channel types by ID (RFT_ID) sent 55ab593b18SJoe Eykholt * @LPORT_ST_RFF_ID: Register FC-4 Features by ID (RFF_ID) sent 56d78c317fSNeerav Parikh * @LPORT_ST_FDMI: Waiting for mgmt server rport to become ready 57d78c317fSNeerav Parikh * @LPORT_ST_RHBA: 583a3b42bfSRobert Love * @LPORT_ST_SCR: State Change Register (SCR) sent 593a3b42bfSRobert Love * @LPORT_ST_READY: Ready for use 603a3b42bfSRobert Love * @LPORT_ST_LOGO: Local port logout (LOGO) sent 613a3b42bfSRobert Love * @LPORT_ST_RESET: Local port reset 6242e9a92fSRobert Love */ 6342e9a92fSRobert Love enum fc_lport_state { 64b1d9fd55SJoe Eykholt LPORT_ST_DISABLED = 0, 6542e9a92fSRobert Love LPORT_ST_FLOGI, 6642e9a92fSRobert Love LPORT_ST_DNS, 67c9c7bd7aSChris Leech LPORT_ST_RNN_ID, 685baa17c3SChris Leech LPORT_ST_RSNN_NN, 69c9866a54SChris Leech LPORT_ST_RSPN_ID, 7042e9a92fSRobert Love LPORT_ST_RFT_ID, 71ab593b18SJoe Eykholt LPORT_ST_RFF_ID, 72d78c317fSNeerav Parikh LPORT_ST_FDMI, 73d78c317fSNeerav Parikh LPORT_ST_RHBA, 74d78c317fSNeerav Parikh LPORT_ST_RPA, 75d78c317fSNeerav Parikh LPORT_ST_DHBA, 76d78c317fSNeerav Parikh LPORT_ST_DPRT, 7742e9a92fSRobert Love LPORT_ST_SCR, 7842e9a92fSRobert Love LPORT_ST_READY, 7942e9a92fSRobert Love LPORT_ST_LOGO, 8042e9a92fSRobert Love LPORT_ST_RESET 8142e9a92fSRobert Love }; 8242e9a92fSRobert Love 8342e9a92fSRobert Love enum fc_disc_event { 8442e9a92fSRobert Love DISC_EV_NONE = 0, 8542e9a92fSRobert Love DISC_EV_SUCCESS, 8642e9a92fSRobert Love DISC_EV_FAILED 8742e9a92fSRobert Love }; 8842e9a92fSRobert Love 893a3b42bfSRobert Love /** 903a3b42bfSRobert Love * enum fc_rport_state - Remote port states 913a3b42bfSRobert Love * @RPORT_ST_INIT: Initialized 92a7b12a27SJoe Eykholt * @RPORT_ST_FLOGI: Waiting for FLOGI completion for point-to-multipoint 93a7b12a27SJoe Eykholt * @RPORT_ST_PLOGI_WAIT: Waiting for peer to login for point-to-multipoint 943a3b42bfSRobert Love * @RPORT_ST_PLOGI: Waiting for PLOGI completion 953a3b42bfSRobert Love * @RPORT_ST_PRLI: Waiting for PRLI completion 963a3b42bfSRobert Love * @RPORT_ST_RTV: Waiting for RTV completion 973a3b42bfSRobert Love * @RPORT_ST_READY: Ready for use 983a3b42bfSRobert Love * @RPORT_ST_ADISC: Discover Address sent 993a3b42bfSRobert Love * @RPORT_ST_DELETE: Remote port being deleted 1003a3b42bfSRobert Love */ 10142e9a92fSRobert Love enum fc_rport_state { 1023a3b42bfSRobert Love RPORT_ST_INIT, 103a7b12a27SJoe Eykholt RPORT_ST_FLOGI, 104a7b12a27SJoe Eykholt RPORT_ST_PLOGI_WAIT, 1053a3b42bfSRobert Love RPORT_ST_PLOGI, 1063a3b42bfSRobert Love RPORT_ST_PRLI, 1073a3b42bfSRobert Love RPORT_ST_RTV, 1083a3b42bfSRobert Love RPORT_ST_READY, 1093a3b42bfSRobert Love RPORT_ST_ADISC, 1103a3b42bfSRobert Love RPORT_ST_DELETE, 11142e9a92fSRobert Love }; 11242e9a92fSRobert Love 11342e9a92fSRobert Love /** 11442e9a92fSRobert Love * struct fc_disc_port - temporary discovery port to hold rport identifiers 11542e9a92fSRobert Love * @lp: Fibre Channel host port instance 1169737e6a7SRobert Love * @peers: Node for list management during discovery and RSCN processing 1179737e6a7SRobert Love * @rport_work: Work struct for starting the rport state machine 1189737e6a7SRobert Love * @port_id: Port ID of the discovered port 11942e9a92fSRobert Love */ 12042e9a92fSRobert Love struct fc_disc_port { 12142e9a92fSRobert Love struct fc_lport *lp; 12242e9a92fSRobert Love struct list_head peers; 12342e9a92fSRobert Love struct work_struct rport_work; 1249737e6a7SRobert Love u32 port_id; 12542e9a92fSRobert Love }; 12642e9a92fSRobert Love 1273a3b42bfSRobert Love /** 1283a3b42bfSRobert Love * enum fc_rport_event - Remote port events 1293a3b42bfSRobert Love * @RPORT_EV_NONE: No event 1303a3b42bfSRobert Love * @RPORT_EV_READY: Remote port is ready for use 1313a3b42bfSRobert Love * @RPORT_EV_FAILED: State machine failed, remote port is not ready 1323a3b42bfSRobert Love * @RPORT_EV_STOP: Remote port has been stopped 1333a3b42bfSRobert Love * @RPORT_EV_LOGO: Remote port logout (LOGO) sent 1343a3b42bfSRobert Love */ 13542e9a92fSRobert Love enum fc_rport_event { 13642e9a92fSRobert Love RPORT_EV_NONE = 0, 1374c0f62b5SJoe Eykholt RPORT_EV_READY, 13842e9a92fSRobert Love RPORT_EV_FAILED, 13942e9a92fSRobert Love RPORT_EV_STOP, 14042e9a92fSRobert Love RPORT_EV_LOGO 14142e9a92fSRobert Love }; 14242e9a92fSRobert Love 1439fb9d328SJoe Eykholt struct fc_rport_priv; 1449fb9d328SJoe Eykholt 1453a3b42bfSRobert Love /** 1463a3b42bfSRobert Love * struct fc_rport_operations - Operations for a remote port 1473a3b42bfSRobert Love * @event_callback: Function to be called for remote port events 1483a3b42bfSRobert Love */ 14942e9a92fSRobert Love struct fc_rport_operations { 1509fb9d328SJoe Eykholt void (*event_callback)(struct fc_lport *, struct fc_rport_priv *, 15142e9a92fSRobert Love enum fc_rport_event); 15242e9a92fSRobert Love }; 15342e9a92fSRobert Love 15442e9a92fSRobert Love /** 15542e9a92fSRobert Love * struct fc_rport_libfc_priv - libfc internal information about a remote port 1563a3b42bfSRobert Love * @local_port: The associated local port 1573a3b42bfSRobert Love * @rp_state: Indicates READY for I/O or DELETE when blocked 1589e9d0452SJoe Eykholt * @flags: REC and RETRY supported flags 1593a3b42bfSRobert Love * @e_d_tov: Error detect timeout value (in msec) 1603a3b42bfSRobert Love * @r_a_tov: Resource allocation timeout value (in msec) 1619e9d0452SJoe Eykholt */ 1629e9d0452SJoe Eykholt struct fc_rport_libfc_priv { 1639e9d0452SJoe Eykholt struct fc_lport *local_port; 1649e9d0452SJoe Eykholt enum fc_rport_state rp_state; 1659e9d0452SJoe Eykholt u16 flags; 1669e9d0452SJoe Eykholt #define FC_RP_FLAGS_REC_SUPPORTED (1 << 0) 1679e9d0452SJoe Eykholt #define FC_RP_FLAGS_RETRY (1 << 1) 1684b2164d4SJoe Eykholt #define FC_RP_STARTED (1 << 2) 16975a2792dSBhanu Prakash Gollapudi #define FC_RP_FLAGS_CONF_REQ (1 << 3) 1709e9d0452SJoe Eykholt unsigned int e_d_tov; 1719e9d0452SJoe Eykholt unsigned int r_a_tov; 1729e9d0452SJoe Eykholt }; 1739e9d0452SJoe Eykholt 1749e9d0452SJoe Eykholt /** 1753a3b42bfSRobert Love * struct fc_rport_priv - libfc remote port and discovery info 1763a3b42bfSRobert Love * @local_port: The associated local port 1773a3b42bfSRobert Love * @rport: The FC transport remote port 1783a3b42bfSRobert Love * @kref: Reference counter 1793a3b42bfSRobert Love * @rp_state: Enumeration that tracks progress of PLOGI, PRLI, 1803a3b42bfSRobert Love * and RTV exchanges 1813a3b42bfSRobert Love * @ids: The remote port identifiers and roles 1824b2164d4SJoe Eykholt * @flags: STARTED, REC and RETRY_SUPPORTED flags 1833a3b42bfSRobert Love * @max_seq: Maximum number of concurrent sequences 1843a3b42bfSRobert Love * @disc_id: The discovery identifier 1853a3b42bfSRobert Love * @maxframe_size: The maximum frame size 1863a3b42bfSRobert Love * @retries: The retry count for the current state 187f034260dSJoe Eykholt * @major_retries: The retry count for the entire PLOGI/PRLI state machine 1883a3b42bfSRobert Love * @e_d_tov: Error detect timeout value (in msec) 1893a3b42bfSRobert Love * @r_a_tov: Resource allocation timeout value (in msec) 1903a3b42bfSRobert Love * @rp_mutex: The mutex that protects the remote port 1913a3b42bfSRobert Love * @retry_work: Handle for retries 1923a3b42bfSRobert Love * @event_callback: Callback when READY, FAILED or LOGO states complete 19396ad8464SJoe Eykholt * @prli_count: Count of open PRLI sessions in providers 19442e90414SJoe Eykholt * @rcu: Structure used for freeing in an RCU-safe manner 19542e9a92fSRobert Love */ 1969e9d0452SJoe Eykholt struct fc_rport_priv { 19742e9a92fSRobert Love struct fc_lport *local_port; 198f211fa51SJoe Eykholt struct fc_rport *rport; 199f211fa51SJoe Eykholt struct kref kref; 20042e9a92fSRobert Love enum fc_rport_state rp_state; 201f211fa51SJoe Eykholt struct fc_rport_identifiers ids; 20242e9a92fSRobert Love u16 flags; 20342e9a92fSRobert Love u16 max_seq; 2040f6c6149SJoe Eykholt u16 disc_id; 205f211fa51SJoe Eykholt u16 maxframe_size; 20642e9a92fSRobert Love unsigned int retries; 207f034260dSJoe Eykholt unsigned int major_retries; 20842e9a92fSRobert Love unsigned int e_d_tov; 20942e9a92fSRobert Love unsigned int r_a_tov; 21042e9a92fSRobert Love struct mutex rp_mutex; 21142e9a92fSRobert Love struct delayed_work retry_work; 21242e9a92fSRobert Love enum fc_rport_event event; 21342e9a92fSRobert Love struct fc_rport_operations *ops; 21442e9a92fSRobert Love struct list_head peers; 21542e9a92fSRobert Love struct work_struct event_work; 216f211fa51SJoe Eykholt u32 supported_classes; 21796ad8464SJoe Eykholt u16 prli_count; 21842e90414SJoe Eykholt struct rcu_head rcu; 21975a2792dSBhanu Prakash Gollapudi u16 sp_features; 22075a2792dSBhanu Prakash Gollapudi u8 spp_type; 22175a2792dSBhanu Prakash Gollapudi void (*lld_event_callback)(struct fc_lport *, 22275a2792dSBhanu Prakash Gollapudi struct fc_rport_priv *, 22375a2792dSBhanu Prakash Gollapudi enum fc_rport_event); 22442e9a92fSRobert Love }; 22542e9a92fSRobert Love 2263a3b42bfSRobert Love /** 2271bd49b48SVasu Dev * struct fc_stats - fc stats structure 2283a3b42bfSRobert Love * @SecondsSinceLastReset: Seconds since the last reset 2293a3b42bfSRobert Love * @TxFrames: Number of transmitted frames 2303a3b42bfSRobert Love * @TxWords: Number of transmitted words 2313a3b42bfSRobert Love * @RxFrames: Number of received frames 2323a3b42bfSRobert Love * @RxWords: Number of received words 2333a3b42bfSRobert Love * @ErrorFrames: Number of received error frames 2343a3b42bfSRobert Love * @DumpedFrames: Number of dumped frames 2350f02a665SVasu Dev * @FcpPktAllocFails: Number of fcp packet allocation failures 2360f02a665SVasu Dev * @FcpPktAborts: Number of fcp packet aborts 2370f02a665SVasu Dev * @FcpFrameAllocFails: Number of fcp frame allocation failures 2383a3b42bfSRobert Love * @LinkFailureCount: Number of link failures 2393a3b42bfSRobert Love * @LossOfSignalCount: Number for signal losses 2403a3b42bfSRobert Love * @InvalidTxWordCount: Number of invalid transmitted words 2413a3b42bfSRobert Love * @InvalidCRCCount: Number of invalid CRCs 2423a3b42bfSRobert Love * @InputRequests: Number of input requests 2433a3b42bfSRobert Love * @OutputRequests: Number of output requests 2443a3b42bfSRobert Love * @ControlRequests: Number of control requests 2455f0e385fSJoe Eykholt * @InputBytes: Number of received bytes 2465f0e385fSJoe Eykholt * @OutputBytes: Number of transmitted bytes 2476580bbd0SYi Zou * @VLinkFailureCount: Number of virtual link failures 2486580bbd0SYi Zou * @MissDiscAdvCount: Number of missing FIP discovery advertisement 24942e9a92fSRobert Love */ 2501bd49b48SVasu Dev struct fc_stats { 25142e9a92fSRobert Love u64 SecondsSinceLastReset; 25242e9a92fSRobert Love u64 TxFrames; 25342e9a92fSRobert Love u64 TxWords; 25442e9a92fSRobert Love u64 RxFrames; 25542e9a92fSRobert Love u64 RxWords; 25642e9a92fSRobert Love u64 ErrorFrames; 25742e9a92fSRobert Love u64 DumpedFrames; 2580f02a665SVasu Dev u64 FcpPktAllocFails; 2590f02a665SVasu Dev u64 FcpPktAborts; 2600f02a665SVasu Dev u64 FcpFrameAllocFails; 26142e9a92fSRobert Love u64 LinkFailureCount; 26242e9a92fSRobert Love u64 LossOfSignalCount; 26342e9a92fSRobert Love u64 InvalidTxWordCount; 26442e9a92fSRobert Love u64 InvalidCRCCount; 26542e9a92fSRobert Love u64 InputRequests; 26642e9a92fSRobert Love u64 OutputRequests; 26742e9a92fSRobert Love u64 ControlRequests; 2685f0e385fSJoe Eykholt u64 InputBytes; 2695f0e385fSJoe Eykholt u64 OutputBytes; 2706580bbd0SYi Zou u64 VLinkFailureCount; 2716580bbd0SYi Zou u64 MissDiscAdvCount; 27242e9a92fSRobert Love }; 27342e9a92fSRobert Love 2743a3b42bfSRobert Love /** 2753a3b42bfSRobert Love * struct fc_seq_els_data - ELS data used for passing ELS specific responses 2763a3b42bfSRobert Love * @reason: The reason for rejection 27725985edcSLucas De Marchi * @explan: The explanation of the rejection 2783a3b42bfSRobert Love * 2793a3b42bfSRobert Love * Mainly used by the exchange manager layer. 28042e9a92fSRobert Love */ 28142e9a92fSRobert Love struct fc_seq_els_data { 28242e9a92fSRobert Love enum fc_els_rjt_reason reason; 28342e9a92fSRobert Love enum fc_els_rjt_explan explan; 28442e9a92fSRobert Love }; 28542e9a92fSRobert Love 2863a3b42bfSRobert Love /** 2873a3b42bfSRobert Love * struct fc_fcp_pkt - FCP request structure (one for each scsi_cmnd request) 2883a3b42bfSRobert Love * @lp: The associated local port 2893a3b42bfSRobert Love * @state: The state of the I/O 2903a3b42bfSRobert Love * @ref_cnt: Reference count 2913a3b42bfSRobert Love * @scsi_pkt_lock: Lock to protect the SCSI packet (must be taken before the 2923a3b42bfSRobert Love * host_lock if both are to be held at the same time) 2933a3b42bfSRobert Love * @cmd: The SCSI command (set and clear with the host_lock held) 2943a3b42bfSRobert Love * @list: Tracks queued commands (accessed with the host_lock held) 2953a3b42bfSRobert Love * @timer: The command timer 2963a3b42bfSRobert Love * @tm_done: Completion indicator 2973a3b42bfSRobert Love * @wait_for_comp: Indicator to wait for completion of the I/O (in jiffies) 2983a3b42bfSRobert Love * @data_len: The length of the data 2993a3b42bfSRobert Love * @cdb_cmd: The CDB command 3003a3b42bfSRobert Love * @xfer_len: The transfer length 3013a3b42bfSRobert Love * @xfer_ddp: Indicates if this transfer used DDP (XID of the exchange 3023a3b42bfSRobert Love * will be set here if DDP was setup) 3033a3b42bfSRobert Love * @xfer_contig_end: The offset into the buffer if the buffer is contiguous 3043a3b42bfSRobert Love * (Tx and Rx) 3053a3b42bfSRobert Love * @max_payload: The maximum payload size (in bytes) 3063a3b42bfSRobert Love * @io_status: SCSI result (upper 24 bits) 3073a3b42bfSRobert Love * @cdb_status: CDB status 3083a3b42bfSRobert Love * @status_code: FCP I/O status 3093a3b42bfSRobert Love * @scsi_comp_flags: Completion flags (bit 3 Underrun bit 2: overrun) 3103a3b42bfSRobert Love * @req_flags: Request flags (bit 0: read bit:1 write) 3113a3b42bfSRobert Love * @scsi_resid: SCSI residule length 3123a3b42bfSRobert Love * @rport: The remote port that the SCSI command is targeted at 3133a3b42bfSRobert Love * @seq_ptr: The sequence that will carry the SCSI command 3143a3b42bfSRobert Love * @recov_retry: Number of recovery retries 3153a3b42bfSRobert Love * @recov_seq: The sequence for REC or SRR 31642e9a92fSRobert Love */ 31742e9a92fSRobert Love struct fc_fcp_pkt { 3183a3b42bfSRobert Love spinlock_t scsi_pkt_lock; 319ed26cfecSVasu Dev atomic_t ref_cnt; 320ed26cfecSVasu Dev 321ed26cfecSVasu Dev /* SCSI command and data transfer information */ 322ed26cfecSVasu Dev u32 data_len; 3233a3b42bfSRobert Love 3243a3b42bfSRobert Love /* SCSI I/O related information */ 3253a3b42bfSRobert Love struct scsi_cmnd *cmd; 3263a3b42bfSRobert Love struct list_head list; 3273a3b42bfSRobert Love 328ed26cfecSVasu Dev /* Housekeeping information */ 329ed26cfecSVasu Dev struct fc_lport *lp; 330ed26cfecSVasu Dev u8 state; 33142e9a92fSRobert Love 3323a3b42bfSRobert Love /* SCSI/FCP return status */ 33342e9a92fSRobert Love u8 cdb_status; 3343a3b42bfSRobert Love u8 status_code; 33542e9a92fSRobert Love u8 scsi_comp_flags; 336ed26cfecSVasu Dev u32 io_status; 3373a3b42bfSRobert Love u32 req_flags; 3383a3b42bfSRobert Love u32 scsi_resid; 33942e9a92fSRobert Love 340ed26cfecSVasu Dev /* Transport related veriables */ 341ed26cfecSVasu Dev size_t xfer_len; 342ed26cfecSVasu Dev struct fcp_cmnd cdb_cmd; 343ed26cfecSVasu Dev u32 xfer_contig_end; 344ed26cfecSVasu Dev u16 max_payload; 345ed26cfecSVasu Dev u16 xfer_ddp; 346ed26cfecSVasu Dev 3473a3b42bfSRobert Love /* Associated structures */ 3483a3b42bfSRobert Love struct fc_rport *rport; 3493a3b42bfSRobert Love struct fc_seq *seq_ptr; 3503a3b42bfSRobert Love 351ed26cfecSVasu Dev /* Timeout/error related information */ 352ed26cfecSVasu Dev struct timer_list timer; 353ed26cfecSVasu Dev int wait_for_comp; 354ed26cfecSVasu Dev u32 recov_retry; 3553a3b42bfSRobert Love struct fc_seq *recov_seq; 356ed26cfecSVasu Dev struct completion tm_done; 357ed26cfecSVasu Dev } ____cacheline_aligned_in_smp; 35842e9a92fSRobert Love 35942e9a92fSRobert Love /* 36042e9a92fSRobert Love * Structure and function definitions for managing Fibre Channel Exchanges 36142e9a92fSRobert Love * and Sequences 36242e9a92fSRobert Love * 36342e9a92fSRobert Love * fc_exch holds state for one exchange and links to its active sequence. 36442e9a92fSRobert Love * 36542e9a92fSRobert Love * fc_seq holds the state for an individual sequence. 36642e9a92fSRobert Love */ 36742e9a92fSRobert Love 36842e9a92fSRobert Love struct fc_exch_mgr; 36996316099SVasu Dev struct fc_exch_mgr_anchor; 370e4bc50beSVasu Dev extern u16 fc_cpu_mask; /* cpu mask for possible cpus */ 37142e9a92fSRobert Love 3723a3b42bfSRobert Love /** 3733a3b42bfSRobert Love * struct fc_seq - FC sequence 3743a3b42bfSRobert Love * @id: The sequence ID 3753a3b42bfSRobert Love * @ssb_stat: Status flags for the sequence status block (SSB) 3763a3b42bfSRobert Love * @cnt: Number of frames sent so far 3773a3b42bfSRobert Love * @rec_data: FC-4 value for REC 37842e9a92fSRobert Love */ 37942e9a92fSRobert Love struct fc_seq { 3803a3b42bfSRobert Love u8 id; 3813a3b42bfSRobert Love u16 ssb_stat; 3823a3b42bfSRobert Love u16 cnt; 3833a3b42bfSRobert Love u32 rec_data; 38442e9a92fSRobert Love }; 38542e9a92fSRobert Love 38642e9a92fSRobert Love #define FC_EX_DONE (1 << 0) /* ep is completed */ 38742e9a92fSRobert Love #define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */ 38842e9a92fSRobert Love 3893a3b42bfSRobert Love /** 3903a3b42bfSRobert Love * struct fc_exch - Fibre Channel Exchange 3913a3b42bfSRobert Love * @em: Exchange manager 3923a3b42bfSRobert Love * @pool: Exchange pool 3933a3b42bfSRobert Love * @state: The exchange's state 3943a3b42bfSRobert Love * @xid: The exchange ID 3953a3b42bfSRobert Love * @ex_list: Handle used by the EM to track free exchanges 3963a3b42bfSRobert Love * @ex_lock: Lock that protects the exchange 3973a3b42bfSRobert Love * @ex_refcnt: Reference count 3983a3b42bfSRobert Love * @timeout_work: Handle for timeout handler 3993a3b42bfSRobert Love * @lp: The local port that this exchange is on 4003a3b42bfSRobert Love * @oxid: Originator's exchange ID 4013a3b42bfSRobert Love * @rxid: Responder's exchange ID 4023a3b42bfSRobert Love * @oid: Originator's FCID 4033a3b42bfSRobert Love * @sid: Source FCID 4043a3b42bfSRobert Love * @did: Destination FCID 4053a3b42bfSRobert Love * @esb_stat: ESB exchange status 4063a3b42bfSRobert Love * @r_a_tov: Resouce allocation time out value (in msecs) 4073a3b42bfSRobert Love * @seq_id: The next sequence ID to use 408f60e12e9SJoe Eykholt * @encaps: encapsulation information for lower-level driver 4093a3b42bfSRobert Love * @f_ctl: F_CTL flags for the sequence 4103a3b42bfSRobert Love * @fh_type: The frame type 4113a3b42bfSRobert Love * @class: The class of service 4123a3b42bfSRobert Love * @seq: The sequence in use on this exchange 4137030fd62SBart Van Assche * @resp_active: Number of tasks that are concurrently executing @resp(). 4147030fd62SBart Van Assche * @resp_task: If @resp_active > 0, either the task executing @resp(), the 4157030fd62SBart Van Assche * task that has been interrupted to execute the soft-IRQ 4167030fd62SBart Van Assche * executing @resp() or NULL if more than one task is executing 4177030fd62SBart Van Assche * @resp concurrently. 4187030fd62SBart Van Assche * @resp_wq: Waitqueue for the tasks waiting on @resp_active. 4193a3b42bfSRobert Love * @resp: Callback for responses on this exchange 4203a3b42bfSRobert Love * @destructor: Called when destroying the exchange 4213a3b42bfSRobert Love * @arg: Passed as a void pointer to the resp() callback 42242e9a92fSRobert Love * 42342e9a92fSRobert Love * Locking notes: The ex_lock protects following items: 42442e9a92fSRobert Love * state, esb_stat, f_ctl, seq.ssb_stat 42542e9a92fSRobert Love * seq_id 42642e9a92fSRobert Love * sequence allocation 42742e9a92fSRobert Love */ 42842e9a92fSRobert Love struct fc_exch { 4293a3b42bfSRobert Love spinlock_t ex_lock; 4303a3b42bfSRobert Love atomic_t ex_refcnt; 43149a19889SVasu Dev enum fc_class class; 43249a19889SVasu Dev struct fc_exch_mgr *em; 43349a19889SVasu Dev struct fc_exch_pool *pool; 43449a19889SVasu Dev struct list_head ex_list; 4353a3b42bfSRobert Love struct fc_lport *lp; 43649a19889SVasu Dev u32 esb_stat; 43749a19889SVasu Dev u8 state; 43849a19889SVasu Dev u8 fh_type; 43949a19889SVasu Dev u8 seq_id; 44049a19889SVasu Dev u8 encaps; 44149a19889SVasu Dev u16 xid; 4423a3b42bfSRobert Love u16 oxid; 4433a3b42bfSRobert Love u16 rxid; 4443a3b42bfSRobert Love u32 oid; 4453a3b42bfSRobert Love u32 sid; 4463a3b42bfSRobert Love u32 did; 4473a3b42bfSRobert Love u32 r_a_tov; 4483a3b42bfSRobert Love u32 f_ctl; 4493a3b42bfSRobert Love struct fc_seq seq; 4507030fd62SBart Van Assche int resp_active; 4517030fd62SBart Van Assche struct task_struct *resp_task; 4527030fd62SBart Van Assche wait_queue_head_t resp_wq; 45342e9a92fSRobert Love void (*resp)(struct fc_seq *, struct fc_frame *, void *); 45442e9a92fSRobert Love void *arg; 4553a3b42bfSRobert Love void (*destructor)(struct fc_seq *, void *); 45649a19889SVasu Dev struct delayed_work timeout_work; 45749a19889SVasu Dev } ____cacheline_aligned_in_smp; 45842e9a92fSRobert Love #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq) 45942e9a92fSRobert Love 46042e9a92fSRobert Love 4613a3b42bfSRobert Love struct libfc_function_template { 46242e9a92fSRobert Love /* 46342e9a92fSRobert Love * Interface to send a FC frame 4640ae4d4aeSRobert Love * 4650ae4d4aeSRobert Love * STATUS: REQUIRED 46642e9a92fSRobert Love */ 4673a3b42bfSRobert Love int (*frame_send)(struct fc_lport *, struct fc_frame *); 46842e9a92fSRobert Love 46942e9a92fSRobert Love /* 4700ae4d4aeSRobert Love * Interface to send ELS/CT frames 4710ae4d4aeSRobert Love * 4720ae4d4aeSRobert Love * STATUS: OPTIONAL 47342e9a92fSRobert Love */ 4743a3b42bfSRobert Love struct fc_seq *(*elsct_send)(struct fc_lport *, u32 did, 4753a3b42bfSRobert Love struct fc_frame *, unsigned int op, 47642e9a92fSRobert Love void (*resp)(struct fc_seq *, 4773a3b42bfSRobert Love struct fc_frame *, void *arg), 47842e9a92fSRobert Love void *arg, u32 timer_msec); 47942e9a92fSRobert Love 48042e9a92fSRobert Love /* 48142e9a92fSRobert Love * Send the FC frame payload using a new exchange and sequence. 48242e9a92fSRobert Love * 48342e9a92fSRobert Love * The exchange response handler is set in this routine to resp() 48442e9a92fSRobert Love * function pointer. It can be called in two scenarios: if a timeout 48542e9a92fSRobert Love * occurs or if a response frame is received for the exchange. The 48642e9a92fSRobert Love * fc_frame pointer in response handler will also indicate timeout 48742e9a92fSRobert Love * as error using IS_ERR related macros. 48842e9a92fSRobert Love * 48942e9a92fSRobert Love * The exchange destructor handler is also set in this routine. 49042e9a92fSRobert Love * The destructor handler is invoked by EM layer when exchange 49142e9a92fSRobert Love * is about to free, this can be used by caller to free its 49242e9a92fSRobert Love * resources along with exchange free. 49342e9a92fSRobert Love * 49442e9a92fSRobert Love * The arg is passed back to resp and destructor handler. 49542e9a92fSRobert Love * 49642e9a92fSRobert Love * The timeout value (in msec) for an exchange is set if non zero 49742e9a92fSRobert Love * timer_msec argument is specified. The timer is canceled when 49842e9a92fSRobert Love * it fires or when the exchange is done. The exchange timeout handler 49942e9a92fSRobert Love * is registered by EM layer. 5000ae4d4aeSRobert Love * 5010ae4d4aeSRobert Love * STATUS: OPTIONAL 50242e9a92fSRobert Love */ 5033a3b42bfSRobert Love struct fc_seq *(*exch_seq_send)(struct fc_lport *, struct fc_frame *, 5043a3b42bfSRobert Love void (*resp)(struct fc_seq *, 5053a3b42bfSRobert Love struct fc_frame *, 5063a3b42bfSRobert Love void *), 5073a3b42bfSRobert Love void (*destructor)(struct fc_seq *, 5083a3b42bfSRobert Love void *), 5093a3b42bfSRobert Love void *, unsigned int timer_msec); 51042e9a92fSRobert Love 51142e9a92fSRobert Love /* 512b277d2aaSYi Zou * Sets up the DDP context for a given exchange id on the given 513b277d2aaSYi Zou * scatterlist if LLD supports DDP for large receive. 514b277d2aaSYi Zou * 515b277d2aaSYi Zou * STATUS: OPTIONAL 516b277d2aaSYi Zou */ 5173a3b42bfSRobert Love int (*ddp_setup)(struct fc_lport *, u16, struct scatterlist *, 5183a3b42bfSRobert Love unsigned int); 519b277d2aaSYi Zou /* 520b277d2aaSYi Zou * Completes the DDP transfer and returns the length of data DDPed 521b277d2aaSYi Zou * for the given exchange id. 522b277d2aaSYi Zou * 523b277d2aaSYi Zou * STATUS: OPTIONAL 524b277d2aaSYi Zou */ 5253a3b42bfSRobert Love int (*ddp_done)(struct fc_lport *, u16); 526b277d2aaSYi Zou /* 52733dc362bSYi Zou * Sets up the DDP context for a given exchange id on the given 5281bd49b48SVasu Dev * scatterlist if LLD supports DDP for target. 52933dc362bSYi Zou * 53033dc362bSYi Zou * STATUS: OPTIONAL 53133dc362bSYi Zou */ 53233dc362bSYi Zou int (*ddp_target)(struct fc_lport *, u16, struct scatterlist *, 53333dc362bSYi Zou unsigned int); 53433dc362bSYi Zou /* 535b84056bfSYi Zou * Allow LLD to fill its own Link Error Status Block 536b84056bfSYi Zou * 537b84056bfSYi Zou * STATUS: OPTIONAL 538b84056bfSYi Zou */ 539b84056bfSYi Zou void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb); 540b84056bfSYi Zou /* 5410ae4d4aeSRobert Love * Send a frame using an existing sequence and exchange. 5420ae4d4aeSRobert Love * 5430ae4d4aeSRobert Love * STATUS: OPTIONAL 54442e9a92fSRobert Love */ 5453a3b42bfSRobert Love int (*seq_send)(struct fc_lport *, struct fc_seq *, 5463a3b42bfSRobert Love struct fc_frame *); 54742e9a92fSRobert Love 54842e9a92fSRobert Love /* 54925985edcSLucas De Marchi * Send an ELS response using information from the received frame. 5500ae4d4aeSRobert Love * 5510ae4d4aeSRobert Love * STATUS: OPTIONAL 55242e9a92fSRobert Love */ 55392261156SJoe Eykholt void (*seq_els_rsp_send)(struct fc_frame *, enum fc_els_cmd, 5543a3b42bfSRobert Love struct fc_seq_els_data *); 55542e9a92fSRobert Love 55642e9a92fSRobert Love /* 55742e9a92fSRobert Love * Abort an exchange and sequence. Generally called because of a 55842e9a92fSRobert Love * exchange timeout or an abort from the upper layer. 55942e9a92fSRobert Love * 56042e9a92fSRobert Love * A timer_msec can be specified for abort timeout, if non-zero 56142e9a92fSRobert Love * timer_msec value is specified then exchange resp handler 56242e9a92fSRobert Love * will be called with timeout error if no response to abort. 5630ae4d4aeSRobert Love * 5640ae4d4aeSRobert Love * STATUS: OPTIONAL 56542e9a92fSRobert Love */ 5663a3b42bfSRobert Love int (*seq_exch_abort)(const struct fc_seq *, 56742e9a92fSRobert Love unsigned int timer_msec); 56842e9a92fSRobert Love 56942e9a92fSRobert Love /* 57042e9a92fSRobert Love * Indicate that an exchange/sequence tuple is complete and the memory 57142e9a92fSRobert Love * allocated for the related objects may be freed. 5720ae4d4aeSRobert Love * 5730ae4d4aeSRobert Love * STATUS: OPTIONAL 57442e9a92fSRobert Love */ 5753a3b42bfSRobert Love void (*exch_done)(struct fc_seq *); 57642e9a92fSRobert Love 57742e9a92fSRobert Love /* 57842e9a92fSRobert Love * Start a new sequence on the same exchange/sequence tuple. 5790ae4d4aeSRobert Love * 5800ae4d4aeSRobert Love * STATUS: OPTIONAL 58142e9a92fSRobert Love */ 5823a3b42bfSRobert Love struct fc_seq *(*seq_start_next)(struct fc_seq *); 58342e9a92fSRobert Love 58442e9a92fSRobert Love /* 5851a5c2d7eSJoe Eykholt * Set a response handler for the exchange of the sequence. 5861a5c2d7eSJoe Eykholt * 5871a5c2d7eSJoe Eykholt * STATUS: OPTIONAL 5881a5c2d7eSJoe Eykholt */ 5891a5c2d7eSJoe Eykholt void (*seq_set_resp)(struct fc_seq *sp, 5901a5c2d7eSJoe Eykholt void (*resp)(struct fc_seq *, struct fc_frame *, 5911a5c2d7eSJoe Eykholt void *), 5921a5c2d7eSJoe Eykholt void *arg); 5931a5c2d7eSJoe Eykholt 5941a5c2d7eSJoe Eykholt /* 595239e8104SJoe Eykholt * Assign a sequence for an incoming request frame. 596239e8104SJoe Eykholt * 597239e8104SJoe Eykholt * STATUS: OPTIONAL 598239e8104SJoe Eykholt */ 599239e8104SJoe Eykholt struct fc_seq *(*seq_assign)(struct fc_lport *, struct fc_frame *); 600239e8104SJoe Eykholt 601239e8104SJoe Eykholt /* 60262bdb645SJoe Eykholt * Release the reference on the sequence returned by seq_assign(). 60362bdb645SJoe Eykholt * 60462bdb645SJoe Eykholt * STATUS: OPTIONAL 60562bdb645SJoe Eykholt */ 60662bdb645SJoe Eykholt void (*seq_release)(struct fc_seq *); 60762bdb645SJoe Eykholt 60862bdb645SJoe Eykholt /* 60942e9a92fSRobert Love * Reset an exchange manager, completing all sequences and exchanges. 61042e9a92fSRobert Love * If s_id is non-zero, reset only exchanges originating from that FID. 61142e9a92fSRobert Love * If d_id is non-zero, reset only exchanges sending to that FID. 6120ae4d4aeSRobert Love * 6130ae4d4aeSRobert Love * STATUS: OPTIONAL 61442e9a92fSRobert Love */ 6153a3b42bfSRobert Love void (*exch_mgr_reset)(struct fc_lport *, u32 s_id, u32 d_id); 61642e9a92fSRobert Love 6170ae4d4aeSRobert Love /* 6180ae4d4aeSRobert Love * Flush the rport work queue. Generally used before shutdown. 6190ae4d4aeSRobert Love * 6200ae4d4aeSRobert Love * STATUS: OPTIONAL 62142e9a92fSRobert Love */ 6220ae4d4aeSRobert Love void (*rport_flush_queue)(void); 62342e9a92fSRobert Love 62442e9a92fSRobert Love /* 6250ae4d4aeSRobert Love * Receive a frame for a local port. 6260ae4d4aeSRobert Love * 6270ae4d4aeSRobert Love * STATUS: OPTIONAL 62842e9a92fSRobert Love */ 62992261156SJoe Eykholt void (*lport_recv)(struct fc_lport *, struct fc_frame *); 63042e9a92fSRobert Love 6310ae4d4aeSRobert Love /* 6320ae4d4aeSRobert Love * Reset the local port. 6330ae4d4aeSRobert Love * 6340ae4d4aeSRobert Love * STATUS: OPTIONAL 63542e9a92fSRobert Love */ 6360ae4d4aeSRobert Love int (*lport_reset)(struct fc_lport *); 63742e9a92fSRobert Love 63842e9a92fSRobert Love /* 639093bb6a2SJoe Eykholt * Set the local port FC_ID. 640093bb6a2SJoe Eykholt * 641093bb6a2SJoe Eykholt * This may be provided by the LLD to allow it to be 642093bb6a2SJoe Eykholt * notified when the local port is assigned a FC-ID. 643093bb6a2SJoe Eykholt * 644093bb6a2SJoe Eykholt * The frame, if non-NULL, is the incoming frame with the 645093bb6a2SJoe Eykholt * FLOGI LS_ACC or FLOGI, and may contain the granted MAC 646093bb6a2SJoe Eykholt * address for the LLD. The frame pointer may be NULL if 647093bb6a2SJoe Eykholt * no MAC is associated with this assignment (LOGO or PLOGI). 648093bb6a2SJoe Eykholt * 649093bb6a2SJoe Eykholt * If FC_ID is non-zero, r_a_tov and e_d_tov must be valid. 650093bb6a2SJoe Eykholt * 651093bb6a2SJoe Eykholt * Note: this is called with the local port mutex held. 652093bb6a2SJoe Eykholt * 653093bb6a2SJoe Eykholt * STATUS: OPTIONAL 654093bb6a2SJoe Eykholt */ 655093bb6a2SJoe Eykholt void (*lport_set_port_id)(struct fc_lport *, u32 port_id, 656093bb6a2SJoe Eykholt struct fc_frame *); 657093bb6a2SJoe Eykholt 658093bb6a2SJoe Eykholt /* 6599737e6a7SRobert Love * Create a remote port with a given port ID 6609737e6a7SRobert Love * 6619737e6a7SRobert Love * STATUS: OPTIONAL 6625101ff99SRobert Love */ 6639737e6a7SRobert Love struct fc_rport_priv *(*rport_create)(struct fc_lport *, u32); 6645101ff99SRobert Love 6655101ff99SRobert Love /* 66642e9a92fSRobert Love * Initiates the RP state machine. It is called from the LP module. 66742e9a92fSRobert Love * This function will issue the following commands to the N_Port 66842e9a92fSRobert Love * identified by the FC ID provided. 66942e9a92fSRobert Love * 67042e9a92fSRobert Love * - PLOGI 67142e9a92fSRobert Love * - PRLI 67242e9a92fSRobert Love * - RTV 6730ae4d4aeSRobert Love * 6740ae4d4aeSRobert Love * STATUS: OPTIONAL 67542e9a92fSRobert Love */ 6769fb9d328SJoe Eykholt int (*rport_login)(struct fc_rport_priv *); 67742e9a92fSRobert Love 67842e9a92fSRobert Love /* 67942e9a92fSRobert Love * Logoff, and remove the rport from the transport if 68042e9a92fSRobert Love * it had been added. This will send a LOGO to the target. 6810ae4d4aeSRobert Love * 6820ae4d4aeSRobert Love * STATUS: OPTIONAL 68342e9a92fSRobert Love */ 6849fb9d328SJoe Eykholt int (*rport_logoff)(struct fc_rport_priv *); 68542e9a92fSRobert Love 68642e9a92fSRobert Love /* 68725985edcSLucas De Marchi * Receive a request from a remote port. 6880ae4d4aeSRobert Love * 6890ae4d4aeSRobert Love * STATUS: OPTIONAL 69042e9a92fSRobert Love */ 69192261156SJoe Eykholt void (*rport_recv_req)(struct fc_lport *, struct fc_frame *); 69242e9a92fSRobert Love 6930ae4d4aeSRobert Love /* 6940ae4d4aeSRobert Love * lookup an rport by it's port ID. 6950ae4d4aeSRobert Love * 6960ae4d4aeSRobert Love * STATUS: OPTIONAL 69742e9a92fSRobert Love */ 6989fb9d328SJoe Eykholt struct fc_rport_priv *(*rport_lookup)(const struct fc_lport *, u32); 69942e9a92fSRobert Love 70042e9a92fSRobert Love /* 701f211fa51SJoe Eykholt * Destroy an rport after final kref_put(). 702f211fa51SJoe Eykholt * The argument is a pointer to the kref inside the fc_rport_priv. 703f211fa51SJoe Eykholt */ 704f211fa51SJoe Eykholt void (*rport_destroy)(struct kref *); 705f211fa51SJoe Eykholt 706f211fa51SJoe Eykholt /* 70775a2792dSBhanu Prakash Gollapudi * Callback routine after the remote port is logged in 70875a2792dSBhanu Prakash Gollapudi * 70975a2792dSBhanu Prakash Gollapudi * STATUS: OPTIONAL 71075a2792dSBhanu Prakash Gollapudi */ 71175a2792dSBhanu Prakash Gollapudi void (*rport_event_callback)(struct fc_lport *, 71275a2792dSBhanu Prakash Gollapudi struct fc_rport_priv *, 71375a2792dSBhanu Prakash Gollapudi enum fc_rport_event); 71475a2792dSBhanu Prakash Gollapudi 71575a2792dSBhanu Prakash Gollapudi /* 71642e9a92fSRobert Love * Send a fcp cmd from fsp pkt. 71742e9a92fSRobert Love * Called with the SCSI host lock unlocked and irqs disabled. 71842e9a92fSRobert Love * 71942e9a92fSRobert Love * The resp handler is called when FCP_RSP received. 72042e9a92fSRobert Love * 7210ae4d4aeSRobert Love * STATUS: OPTIONAL 72242e9a92fSRobert Love */ 7233a3b42bfSRobert Love int (*fcp_cmd_send)(struct fc_lport *, struct fc_fcp_pkt *, 7243a3b42bfSRobert Love void (*resp)(struct fc_seq *, struct fc_frame *, 7253a3b42bfSRobert Love void *)); 72642e9a92fSRobert Love 72742e9a92fSRobert Love /* 72825985edcSLucas De Marchi * Cleanup the FCP layer, used during link down and reset 7290ae4d4aeSRobert Love * 7300ae4d4aeSRobert Love * STATUS: OPTIONAL 73142e9a92fSRobert Love */ 7323a3b42bfSRobert Love void (*fcp_cleanup)(struct fc_lport *); 73342e9a92fSRobert Love 73442e9a92fSRobert Love /* 73542e9a92fSRobert Love * Abort all I/O on a local port 7360ae4d4aeSRobert Love * 7370ae4d4aeSRobert Love * STATUS: OPTIONAL 73842e9a92fSRobert Love */ 7393a3b42bfSRobert Love void (*fcp_abort_io)(struct fc_lport *); 74042e9a92fSRobert Love 7410ae4d4aeSRobert Love /* 7420ae4d4aeSRobert Love * Receive a request for the discovery layer. 7430ae4d4aeSRobert Love * 7440ae4d4aeSRobert Love * STATUS: OPTIONAL 74542e9a92fSRobert Love */ 74692261156SJoe Eykholt void (*disc_recv_req)(struct fc_lport *, struct fc_frame *); 74742e9a92fSRobert Love 74842e9a92fSRobert Love /* 74942e9a92fSRobert Love * Start discovery for a local port. 7500ae4d4aeSRobert Love * 7510ae4d4aeSRobert Love * STATUS: OPTIONAL 75242e9a92fSRobert Love */ 75342e9a92fSRobert Love void (*disc_start)(void (*disc_callback)(struct fc_lport *, 75442e9a92fSRobert Love enum fc_disc_event), 75542e9a92fSRobert Love struct fc_lport *); 75642e9a92fSRobert Love 75742e9a92fSRobert Love /* 75842e9a92fSRobert Love * Stop discovery for a given lport. This will remove 75942e9a92fSRobert Love * all discovered rports 7600ae4d4aeSRobert Love * 7610ae4d4aeSRobert Love * STATUS: OPTIONAL 76242e9a92fSRobert Love */ 76342e9a92fSRobert Love void (*disc_stop) (struct fc_lport *); 76442e9a92fSRobert Love 76542e9a92fSRobert Love /* 76642e9a92fSRobert Love * Stop discovery for a given lport. This will block 76742e9a92fSRobert Love * until all discovered rports are deleted from the 76842e9a92fSRobert Love * FC transport class 7690ae4d4aeSRobert Love * 7700ae4d4aeSRobert Love * STATUS: OPTIONAL 77142e9a92fSRobert Love */ 77242e9a92fSRobert Love void (*disc_stop_final) (struct fc_lport *); 77342e9a92fSRobert Love }; 77442e9a92fSRobert Love 7753a3b42bfSRobert Love /** 7763a3b42bfSRobert Love * struct fc_disc - Discovery context 7773a3b42bfSRobert Love * @retry_count: Number of retries 7783a3b42bfSRobert Love * @pending: 1 if discovery is pending, 0 if not 779c531b9b4SBhanu Prakash Gollapudi * @requested: 1 if discovery has been requested, 0 if not 7803a3b42bfSRobert Love * @seq_count: Number of sequences used for discovery 7813a3b42bfSRobert Love * @buf_len: Length of the discovery buffer 7823a3b42bfSRobert Love * @disc_id: Discovery ID 7833a3b42bfSRobert Love * @rports: List of discovered remote ports 7840685230cSJoe Eykholt * @priv: Private pointer for use by discovery code 7853a3b42bfSRobert Love * @disc_mutex: Mutex that protects the discovery context 7863a3b42bfSRobert Love * @partial_buf: Partial name buffer (if names are returned 7873a3b42bfSRobert Love * in multiple frames) 7883a3b42bfSRobert Love * @disc_work: handle for delayed work context 7893a3b42bfSRobert Love * @disc_callback: Callback routine called when discovery completes 7903a3b42bfSRobert Love */ 79142e9a92fSRobert Love struct fc_disc { 79242e9a92fSRobert Love unsigned char retry_count; 79342e9a92fSRobert Love unsigned char pending; 79442e9a92fSRobert Love unsigned char requested; 79542e9a92fSRobert Love unsigned short seq_count; 79642e9a92fSRobert Love unsigned char buf_len; 7970f6c6149SJoe Eykholt u16 disc_id; 79842e9a92fSRobert Love 79942e9a92fSRobert Love struct list_head rports; 8000685230cSJoe Eykholt void *priv; 80142e9a92fSRobert Love struct mutex disc_mutex; 8023a3b42bfSRobert Love struct fc_gpn_ft_resp partial_buf; 80342e9a92fSRobert Love struct delayed_work disc_work; 8043a3b42bfSRobert Love 8053a3b42bfSRobert Love void (*disc_callback)(struct fc_lport *, 8063a3b42bfSRobert Love enum fc_disc_event); 80742e9a92fSRobert Love }; 80842e9a92fSRobert Love 80970d53b04SJoe Eykholt /* 81070d53b04SJoe Eykholt * Local port notifier and events. 81170d53b04SJoe Eykholt */ 81270d53b04SJoe Eykholt extern struct blocking_notifier_head fc_lport_notifier_head; 81370d53b04SJoe Eykholt enum fc_lport_event { 81470d53b04SJoe Eykholt FC_LPORT_EV_ADD, 81570d53b04SJoe Eykholt FC_LPORT_EV_DEL, 81670d53b04SJoe Eykholt }; 81770d53b04SJoe Eykholt 8183a3b42bfSRobert Love /** 8193a3b42bfSRobert Love * struct fc_lport - Local port 8203a3b42bfSRobert Love * @host: The SCSI host associated with a local port 8213a3b42bfSRobert Love * @ema_list: Exchange manager anchor list 8223a3b42bfSRobert Love * @dns_rdata: The directory server remote port 823d78c317fSNeerav Parikh * @ms_rdata: The management server remote port 8243a3b42bfSRobert Love * @ptp_rdata: Point to point remote port 8253a3b42bfSRobert Love * @scsi_priv: FCP layer internal data 8263a3b42bfSRobert Love * @disc: Discovery context 8273a3b42bfSRobert Love * @vports: Child vports if N_Port 8283a3b42bfSRobert Love * @vport: Parent vport if VN_Port 8293a3b42bfSRobert Love * @tt: Libfc function template 8303a3b42bfSRobert Love * @link_up: Link state (1 = link up, 0 = link down) 8313a3b42bfSRobert Love * @qfull: Queue state (1 queue is full, 0 queue is not full) 8323a3b42bfSRobert Love * @state: Identifies the state 8333a3b42bfSRobert Love * @boot_time: Timestamp indicating when the local port came online 8343a3b42bfSRobert Love * @host_stats: SCSI host statistics 8351bd49b48SVasu Dev * @stats: FC local port stats (TODO separate libfc LLD stats) 8363a3b42bfSRobert Love * @retry_count: Number of retries in the current state 8377b2787ecSRobert Love * @port_id: FC Port ID 8383a3b42bfSRobert Love * @wwpn: World Wide Port Name 8393a3b42bfSRobert Love * @wwnn: World Wide Node Name 8403a3b42bfSRobert Love * @service_params: Common service parameters 8413a3b42bfSRobert Love * @e_d_tov: Error detection timeout value 8423a3b42bfSRobert Love * @r_a_tov: Resouce allocation timeout value 8433a3b42bfSRobert Love * @rnid_gen: RNID information 8443a3b42bfSRobert Love * @sg_supp: Indicates if scatter gather is supported 8453a3b42bfSRobert Love * @seq_offload: Indicates if sequence offload is supported 8463a3b42bfSRobert Love * @crc_offload: Indicates if CRC offload is supported 8473a3b42bfSRobert Love * @lro_enabled: Indicates if large receive offload is supported 8483a3b42bfSRobert Love * @does_npiv: Supports multiple vports 8493a3b42bfSRobert Love * @npiv_enabled: Switch/fabric allows NPIV 8503a3b42bfSRobert Love * @mfs: The maximum Fibre Channel payload size 8513a3b42bfSRobert Love * @max_retry_count: The maximum retry attempts 8523a3b42bfSRobert Love * @max_rport_retry_count: The maximum remote port retry attempts 853f90377abSJoe Eykholt * @rport_priv_size: Size needed by driver after struct fc_rport_priv 8543a3b42bfSRobert Love * @lro_xid: The maximum XID for LRO 8553a3b42bfSRobert Love * @lso_max: The maximum large offload send size 8563a3b42bfSRobert Love * @fcts: FC-4 type mask 8573a3b42bfSRobert Love * @lp_mutex: Mutex to protect the local port 85870d53b04SJoe Eykholt * @list: Linkage on list of vport peers 8593a3b42bfSRobert Love * @retry_work: Handle to local port for delayed retry context 860baf9fdf0SJoe Eykholt * @prov: Pointers available for use by passive FC-4 providers 86170d53b04SJoe Eykholt * @lport_list: Linkage on module-wide list of local ports 8623a3b42bfSRobert Love */ 86342e9a92fSRobert Love struct fc_lport { 86442e9a92fSRobert Love /* Associations */ 86542e9a92fSRobert Love struct Scsi_Host *host; 86696316099SVasu Dev struct list_head ema_list; 8673a3b42bfSRobert Love struct fc_rport_priv *dns_rdata; 868d78c317fSNeerav Parikh struct fc_rport_priv *ms_rdata; 8693a3b42bfSRobert Love struct fc_rport_priv *ptp_rdata; 87042e9a92fSRobert Love void *scsi_priv; 87142e9a92fSRobert Love struct fc_disc disc; 87242e9a92fSRobert Love 8733a3b42bfSRobert Love /* Virtual port information */ 8743a3b42bfSRobert Love struct list_head vports; 8753a3b42bfSRobert Love struct fc_vport *vport; 8763a3b42bfSRobert Love 87742e9a92fSRobert Love /* Operational Information */ 87842e9a92fSRobert Love struct libfc_function_template tt; 879bc0e17f6SVasu Dev u8 link_up; 880bc0e17f6SVasu Dev u8 qfull; 8819a6cf881SHannes Reinecke u16 vlan; 88242e9a92fSRobert Love enum fc_lport_state state; 88342e9a92fSRobert Love unsigned long boot_time; 88442e9a92fSRobert Love struct fc_host_statistics host_stats; 8851bd49b48SVasu Dev struct fc_stats __percpu *stats; 88642e9a92fSRobert Love u8 retry_count; 88742e9a92fSRobert Love 8883a3b42bfSRobert Love /* Fabric information */ 8897b2787ecSRobert Love u32 port_id; 8903a3b42bfSRobert Love u64 wwpn; 8913a3b42bfSRobert Love u64 wwnn; 89242e9a92fSRobert Love unsigned int service_params; 89342e9a92fSRobert Love unsigned int e_d_tov; 89442e9a92fSRobert Love unsigned int r_a_tov; 8953a3b42bfSRobert Love struct fc_els_rnid_gen rnid_gen; 8963a3b42bfSRobert Love 8973a3b42bfSRobert Love /* Capabilities */ 8983a3b42bfSRobert Love u32 sg_supp:1; 8993a3b42bfSRobert Love u32 seq_offload:1; 9003a3b42bfSRobert Love u32 crc_offload:1; 9013a3b42bfSRobert Love u32 lro_enabled:1; 9023a3b42bfSRobert Love u32 does_npiv:1; 9033a3b42bfSRobert Love u32 npiv_enabled:1; 9043726f358SJoe Eykholt u32 point_to_multipoint:1; 905d78c317fSNeerav Parikh u32 fdmi_enabled:1; 9063a3b42bfSRobert Love u32 mfs; 90742e9a92fSRobert Love u8 max_retry_count; 908a3666955SAbhijeet Joglekar u8 max_rport_retry_count; 909f90377abSJoe Eykholt u16 rport_priv_size; 91042e9a92fSRobert Love u16 link_speed; 91142e9a92fSRobert Love u16 link_supported_speeds; 9123a3b42bfSRobert Love u16 lro_xid; 9133a3b42bfSRobert Love unsigned int lso_max; 9143a3b42bfSRobert Love struct fc_ns_fts fcts; 91542e9a92fSRobert Love 91642e9a92fSRobert Love /* Miscellaneous */ 9173a3b42bfSRobert Love struct mutex lp_mutex; 9183a3b42bfSRobert Love struct list_head list; 91942e9a92fSRobert Love struct delayed_work retry_work; 920baf9fdf0SJoe Eykholt void *prov[FC_FC4_PROV_SIZE]; 92170d53b04SJoe Eykholt struct list_head lport_list; 92242e9a92fSRobert Love }; 92342e9a92fSRobert Love 92496ad8464SJoe Eykholt /** 92596ad8464SJoe Eykholt * struct fc4_prov - FC-4 provider registration 92696ad8464SJoe Eykholt * @prli: Handler for incoming PRLI 92796ad8464SJoe Eykholt * @prlo: Handler for session reset 92896ad8464SJoe Eykholt * @recv: Handler for incoming request 92996ad8464SJoe Eykholt * @module: Pointer to module. May be NULL. 93096ad8464SJoe Eykholt */ 93196ad8464SJoe Eykholt struct fc4_prov { 93296ad8464SJoe Eykholt int (*prli)(struct fc_rport_priv *, u32 spp_len, 93396ad8464SJoe Eykholt const struct fc_els_spp *spp_in, 93496ad8464SJoe Eykholt struct fc_els_spp *spp_out); 93596ad8464SJoe Eykholt void (*prlo)(struct fc_rport_priv *); 93696ad8464SJoe Eykholt void (*recv)(struct fc_lport *, struct fc_frame *); 93796ad8464SJoe Eykholt struct module *module; 93896ad8464SJoe Eykholt }; 93996ad8464SJoe Eykholt 94096ad8464SJoe Eykholt /* 94196ad8464SJoe Eykholt * Register FC-4 provider with libfc. 94296ad8464SJoe Eykholt */ 94396ad8464SJoe Eykholt int fc_fc4_register_provider(enum fc_fh_type type, struct fc4_prov *); 94496ad8464SJoe Eykholt void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *); 94596ad8464SJoe Eykholt 94634f42a07SRobert Love /* 94742e9a92fSRobert Love * FC_LPORT HELPER FUNCTIONS 94842e9a92fSRobert Love *****************************/ 9493a3b42bfSRobert Love 9503a3b42bfSRobert Love /** 9513a3b42bfSRobert Love * fc_lport_test_ready() - Determine if a local port is in the READY state 9523a3b42bfSRobert Love * @lport: The local port to test 9533a3b42bfSRobert Love */ 9543a3b42bfSRobert Love static inline int fc_lport_test_ready(struct fc_lport *lport) 95542e9a92fSRobert Love { 9563a3b42bfSRobert Love return lport->state == LPORT_ST_READY; 95742e9a92fSRobert Love } 95842e9a92fSRobert Love 9593a3b42bfSRobert Love /** 9603a3b42bfSRobert Love * fc_set_wwnn() - Set the World Wide Node Name of a local port 9613a3b42bfSRobert Love * @lport: The local port whose WWNN is to be set 9623a3b42bfSRobert Love * @wwnn: The new WWNN 9633a3b42bfSRobert Love */ 9643a3b42bfSRobert Love static inline void fc_set_wwnn(struct fc_lport *lport, u64 wwnn) 96542e9a92fSRobert Love { 9663a3b42bfSRobert Love lport->wwnn = wwnn; 96742e9a92fSRobert Love } 96842e9a92fSRobert Love 9693a3b42bfSRobert Love /** 9703a3b42bfSRobert Love * fc_set_wwpn() - Set the World Wide Port Name of a local port 9713a3b42bfSRobert Love * @lport: The local port whose WWPN is to be set 9723a3b42bfSRobert Love * @wwnn: The new WWPN 9733a3b42bfSRobert Love */ 9743a3b42bfSRobert Love static inline void fc_set_wwpn(struct fc_lport *lport, u64 wwnn) 97542e9a92fSRobert Love { 9763a3b42bfSRobert Love lport->wwpn = wwnn; 97742e9a92fSRobert Love } 97842e9a92fSRobert Love 9793a3b42bfSRobert Love /** 9803a3b42bfSRobert Love * fc_lport_state_enter() - Change a local port's state 9813a3b42bfSRobert Love * @lport: The local port whose state is to change 9823a3b42bfSRobert Love * @state: The new state 9833a3b42bfSRobert Love */ 9843a3b42bfSRobert Love static inline void fc_lport_state_enter(struct fc_lport *lport, 98542e9a92fSRobert Love enum fc_lport_state state) 98642e9a92fSRobert Love { 9873a3b42bfSRobert Love if (state != lport->state) 9883a3b42bfSRobert Love lport->retry_count = 0; 9893a3b42bfSRobert Love lport->state = state; 99042e9a92fSRobert Love } 99142e9a92fSRobert Love 9923a3b42bfSRobert Love /** 9933a3b42bfSRobert Love * fc_lport_init_stats() - Allocate per-CPU statistics for a local port 9943a3b42bfSRobert Love * @lport: The local port whose statistics are to be initialized 9953a3b42bfSRobert Love */ 9963a3b42bfSRobert Love static inline int fc_lport_init_stats(struct fc_lport *lport) 997582b45bcSRobert Love { 9981bd49b48SVasu Dev lport->stats = alloc_percpu(struct fc_stats); 9991bd49b48SVasu Dev if (!lport->stats) 1000582b45bcSRobert Love return -ENOMEM; 1001582b45bcSRobert Love return 0; 1002582b45bcSRobert Love } 1003582b45bcSRobert Love 10043a3b42bfSRobert Love /** 10053a3b42bfSRobert Love * fc_lport_free_stats() - Free memory for a local port's statistics 10063a3b42bfSRobert Love * @lport: The local port whose statistics are to be freed 10073a3b42bfSRobert Love */ 10083a3b42bfSRobert Love static inline void fc_lport_free_stats(struct fc_lport *lport) 1009582b45bcSRobert Love { 10101bd49b48SVasu Dev free_percpu(lport->stats); 1011a0a25da2SVasu Dev } 1012a0a25da2SVasu Dev 1013a0a25da2SVasu Dev /** 10143a3b42bfSRobert Love * lport_priv() - Return the private data from a local port 10153a3b42bfSRobert Love * @lport: The local port whose private data is to be retreived 10163a3b42bfSRobert Love */ 10173a3b42bfSRobert Love static inline void *lport_priv(const struct fc_lport *lport) 10183a3b42bfSRobert Love { 10193a3b42bfSRobert Love return (void *)(lport + 1); 10203a3b42bfSRobert Love } 10213a3b42bfSRobert Love 10223a3b42bfSRobert Love /** 10233a3b42bfSRobert Love * libfc_host_alloc() - Allocate a Scsi_Host with room for a local port and 10243a3b42bfSRobert Love * LLD private data 10253a3b42bfSRobert Love * @sht: The SCSI host template 10263a3b42bfSRobert Love * @priv_size: Size of private data 1027a0a25da2SVasu Dev * 102886221969SChris Leech * Returns: libfc lport 1029a0a25da2SVasu Dev */ 103086221969SChris Leech static inline struct fc_lport * 1031a0a25da2SVasu Dev libfc_host_alloc(struct scsi_host_template *sht, int priv_size) 1032a0a25da2SVasu Dev { 103386221969SChris Leech struct fc_lport *lport; 103486221969SChris Leech struct Scsi_Host *shost; 103586221969SChris Leech 103686221969SChris Leech shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size); 103786221969SChris Leech if (!shost) 103886221969SChris Leech return NULL; 103986221969SChris Leech lport = shost_priv(shost); 104086221969SChris Leech lport->host = shost; 104186221969SChris Leech INIT_LIST_HEAD(&lport->ema_list); 1042174e1ebfSChris Leech INIT_LIST_HEAD(&lport->vports); 104386221969SChris Leech return lport; 1044a0a25da2SVasu Dev } 104542e9a92fSRobert Love 104634f42a07SRobert Love /* 10473a3b42bfSRobert Love * FC_FCP HELPER FUNCTIONS 10483a3b42bfSRobert Love *****************************/ 10493a3b42bfSRobert Love static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp) 10503a3b42bfSRobert Love { 10513a3b42bfSRobert Love if (fsp && fsp->cmd) 10523a3b42bfSRobert Love return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE; 10533a3b42bfSRobert Love return false; 10543a3b42bfSRobert Love } 10553a3b42bfSRobert Love 10563a3b42bfSRobert Love /* 105742e9a92fSRobert Love * LOCAL PORT LAYER 105842e9a92fSRobert Love *****************************/ 10593a3b42bfSRobert Love int fc_lport_init(struct fc_lport *); 10603a3b42bfSRobert Love int fc_lport_destroy(struct fc_lport *); 10613a3b42bfSRobert Love int fc_fabric_logoff(struct fc_lport *); 10623a3b42bfSRobert Love int fc_fabric_login(struct fc_lport *); 10638faecddbSChris Leech void __fc_linkup(struct fc_lport *); 106442e9a92fSRobert Love void fc_linkup(struct fc_lport *); 10658faecddbSChris Leech void __fc_linkdown(struct fc_lport *); 106642e9a92fSRobert Love void fc_linkdown(struct fc_lport *); 10673a3b42bfSRobert Love void fc_vport_setlink(struct fc_lport *); 10683a3b42bfSRobert Love void fc_vports_linkchange(struct fc_lport *); 106942e9a92fSRobert Love int fc_lport_config(struct fc_lport *); 107042e9a92fSRobert Love int fc_lport_reset(struct fc_lport *); 10713a3b42bfSRobert Love int fc_set_mfs(struct fc_lport *, u32 mfs); 10723a3b42bfSRobert Love struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize); 10733a3b42bfSRobert Love struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id); 10743a3b42bfSRobert Love int fc_lport_bsg_request(struct fc_bsg_job *); 10753726f358SJoe Eykholt void fc_lport_set_local_id(struct fc_lport *, u32 port_id); 107670d53b04SJoe Eykholt void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *); 1077a51ab396SSteve Ma 1078a51ab396SSteve Ma /* 107942e9a92fSRobert Love * REMOTE PORT LAYER 108042e9a92fSRobert Love *****************************/ 10813a3b42bfSRobert Love int fc_rport_init(struct fc_lport *); 10823a3b42bfSRobert Love void fc_rport_terminate_io(struct fc_rport *); 108342e9a92fSRobert Love 108434f42a07SRobert Love /* 108542e9a92fSRobert Love * DISCOVERY LAYER 108642e9a92fSRobert Love *****************************/ 10870807619dSRobert Love void fc_disc_init(struct fc_lport *); 10880807619dSRobert Love void fc_disc_config(struct fc_lport *, void *); 108942e9a92fSRobert Love 10900685230cSJoe Eykholt static inline struct fc_lport *fc_disc_lport(struct fc_disc *disc) 10910685230cSJoe Eykholt { 10920685230cSJoe Eykholt return container_of(disc, struct fc_lport, disc); 10930685230cSJoe Eykholt } 10940685230cSJoe Eykholt 109534f42a07SRobert Love /* 10963a3b42bfSRobert Love * FCP LAYER 109742e9a92fSRobert Love *****************************/ 109842e9a92fSRobert Love int fc_fcp_init(struct fc_lport *); 109942e9a92fSRobert Love void fc_fcp_destroy(struct fc_lport *); 110042e9a92fSRobert Love 110134f42a07SRobert Love /* 11023a3b42bfSRobert Love * SCSI INTERACTION LAYER 11033a3b42bfSRobert Love *****************************/ 1104f281233dSJeff Garzik int fc_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); 11053a3b42bfSRobert Love int fc_eh_abort(struct scsi_cmnd *); 11063a3b42bfSRobert Love int fc_eh_device_reset(struct scsi_cmnd *); 11073a3b42bfSRobert Love int fc_eh_host_reset(struct scsi_cmnd *); 11083a3b42bfSRobert Love int fc_slave_alloc(struct scsi_device *); 11093a3b42bfSRobert Love 11103a3b42bfSRobert Love /* 111142e9a92fSRobert Love * ELS/CT interface 111242e9a92fSRobert Love *****************************/ 11133a3b42bfSRobert Love int fc_elsct_init(struct fc_lport *); 11143a3b42bfSRobert Love struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did, 11153a3b42bfSRobert Love struct fc_frame *, 111611b56188SChris Leech unsigned int op, 111711b56188SChris Leech void (*resp)(struct fc_seq *, 11183a3b42bfSRobert Love struct fc_frame *, 111911b56188SChris Leech void *arg), 112011b56188SChris Leech void *arg, u32 timer_msec); 112111b56188SChris Leech void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *); 112211b56188SChris Leech void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *); 112324f089e2SJoe Eykholt void fc_fill_reply_hdr(struct fc_frame *, const struct fc_frame *, 112424f089e2SJoe Eykholt enum fc_rctl, u32 parm_offset); 112524f089e2SJoe Eykholt void fc_fill_hdr(struct fc_frame *, const struct fc_frame *, 112624f089e2SJoe Eykholt enum fc_rctl, u32 f_ctl, u16 seq_cnt, u32 parm_offset); 112742e9a92fSRobert Love 112842e9a92fSRobert Love 112934f42a07SRobert Love /* 113042e9a92fSRobert Love * EXCHANGE MANAGER LAYER 113142e9a92fSRobert Love *****************************/ 11323a3b42bfSRobert Love int fc_exch_init(struct fc_lport *); 11334e5fae7aSVasu Dev void fc_exch_update_stats(struct fc_lport *lport); 11343a3b42bfSRobert Love struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *, 11353a3b42bfSRobert Love struct fc_exch_mgr *, 113696316099SVasu Dev bool (*match)(struct fc_frame *)); 11373a3b42bfSRobert Love void fc_exch_mgr_del(struct fc_exch_mgr_anchor *); 1138174e1ebfSChris Leech int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst); 11393a3b42bfSRobert Love struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class, 11403a3b42bfSRobert Love u16 min_xid, u16 max_xid, 114152ff878cSVasu Dev bool (*match)(struct fc_frame *)); 11423a3b42bfSRobert Love void fc_exch_mgr_free(struct fc_lport *); 11433a3b42bfSRobert Love void fc_exch_recv(struct fc_lport *, struct fc_frame *); 11441f6ff364SAbhijeet Joglekar void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id); 114542e9a92fSRobert Love 114642e9a92fSRobert Love /* 114742e9a92fSRobert Love * Functions for fc_functions_template 114842e9a92fSRobert Love */ 11493a3b42bfSRobert Love void fc_get_host_speed(struct Scsi_Host *); 11503a3b42bfSRobert Love void fc_get_host_port_state(struct Scsi_Host *); 11513a3b42bfSRobert Love void fc_set_rport_loss_tmo(struct fc_rport *, u32 timeout); 115242e9a92fSRobert Love struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *); 115342e9a92fSRobert Love 115442e9a92fSRobert Love #endif /* _LIBFC_H_ */ 1155