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 4133a3b42bfSRobert Love * @resp: Callback for responses on this exchange 4143a3b42bfSRobert Love * @destructor: Called when destroying the exchange 4153a3b42bfSRobert Love * @arg: Passed as a void pointer to the resp() callback 41642e9a92fSRobert Love * 41742e9a92fSRobert Love * Locking notes: The ex_lock protects following items: 41842e9a92fSRobert Love * state, esb_stat, f_ctl, seq.ssb_stat 41942e9a92fSRobert Love * seq_id 42042e9a92fSRobert Love * sequence allocation 42142e9a92fSRobert Love */ 42242e9a92fSRobert Love struct fc_exch { 4233a3b42bfSRobert Love spinlock_t ex_lock; 4243a3b42bfSRobert Love atomic_t ex_refcnt; 42549a19889SVasu Dev enum fc_class class; 42649a19889SVasu Dev struct fc_exch_mgr *em; 42749a19889SVasu Dev struct fc_exch_pool *pool; 42849a19889SVasu Dev struct list_head ex_list; 4293a3b42bfSRobert Love struct fc_lport *lp; 43049a19889SVasu Dev u32 esb_stat; 43149a19889SVasu Dev u8 state; 43249a19889SVasu Dev u8 fh_type; 43349a19889SVasu Dev u8 seq_id; 43449a19889SVasu Dev u8 encaps; 43549a19889SVasu Dev u16 xid; 4363a3b42bfSRobert Love u16 oxid; 4373a3b42bfSRobert Love u16 rxid; 4383a3b42bfSRobert Love u32 oid; 4393a3b42bfSRobert Love u32 sid; 4403a3b42bfSRobert Love u32 did; 4413a3b42bfSRobert Love u32 r_a_tov; 4423a3b42bfSRobert Love u32 f_ctl; 4433a3b42bfSRobert Love struct fc_seq seq; 44442e9a92fSRobert Love void (*resp)(struct fc_seq *, struct fc_frame *, void *); 44542e9a92fSRobert Love void *arg; 4463a3b42bfSRobert Love void (*destructor)(struct fc_seq *, void *); 44749a19889SVasu Dev struct delayed_work timeout_work; 44849a19889SVasu Dev } ____cacheline_aligned_in_smp; 44942e9a92fSRobert Love #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq) 45042e9a92fSRobert Love 45142e9a92fSRobert Love 4523a3b42bfSRobert Love struct libfc_function_template { 45342e9a92fSRobert Love /* 45442e9a92fSRobert Love * Interface to send a FC frame 4550ae4d4aeSRobert Love * 4560ae4d4aeSRobert Love * STATUS: REQUIRED 45742e9a92fSRobert Love */ 4583a3b42bfSRobert Love int (*frame_send)(struct fc_lport *, struct fc_frame *); 45942e9a92fSRobert Love 46042e9a92fSRobert Love /* 4610ae4d4aeSRobert Love * Interface to send ELS/CT frames 4620ae4d4aeSRobert Love * 4630ae4d4aeSRobert Love * STATUS: OPTIONAL 46442e9a92fSRobert Love */ 4653a3b42bfSRobert Love struct fc_seq *(*elsct_send)(struct fc_lport *, u32 did, 4663a3b42bfSRobert Love struct fc_frame *, unsigned int op, 46742e9a92fSRobert Love void (*resp)(struct fc_seq *, 4683a3b42bfSRobert Love struct fc_frame *, void *arg), 46942e9a92fSRobert Love void *arg, u32 timer_msec); 47042e9a92fSRobert Love 47142e9a92fSRobert Love /* 47242e9a92fSRobert Love * Send the FC frame payload using a new exchange and sequence. 47342e9a92fSRobert Love * 47442e9a92fSRobert Love * The exchange response handler is set in this routine to resp() 47542e9a92fSRobert Love * function pointer. It can be called in two scenarios: if a timeout 47642e9a92fSRobert Love * occurs or if a response frame is received for the exchange. The 47742e9a92fSRobert Love * fc_frame pointer in response handler will also indicate timeout 47842e9a92fSRobert Love * as error using IS_ERR related macros. 47942e9a92fSRobert Love * 48042e9a92fSRobert Love * The exchange destructor handler is also set in this routine. 48142e9a92fSRobert Love * The destructor handler is invoked by EM layer when exchange 48242e9a92fSRobert Love * is about to free, this can be used by caller to free its 48342e9a92fSRobert Love * resources along with exchange free. 48442e9a92fSRobert Love * 48542e9a92fSRobert Love * The arg is passed back to resp and destructor handler. 48642e9a92fSRobert Love * 48742e9a92fSRobert Love * The timeout value (in msec) for an exchange is set if non zero 48842e9a92fSRobert Love * timer_msec argument is specified. The timer is canceled when 48942e9a92fSRobert Love * it fires or when the exchange is done. The exchange timeout handler 49042e9a92fSRobert Love * is registered by EM layer. 4910ae4d4aeSRobert Love * 4920ae4d4aeSRobert Love * STATUS: OPTIONAL 49342e9a92fSRobert Love */ 4943a3b42bfSRobert Love struct fc_seq *(*exch_seq_send)(struct fc_lport *, struct fc_frame *, 4953a3b42bfSRobert Love void (*resp)(struct fc_seq *, 4963a3b42bfSRobert Love struct fc_frame *, 4973a3b42bfSRobert Love void *), 4983a3b42bfSRobert Love void (*destructor)(struct fc_seq *, 4993a3b42bfSRobert Love void *), 5003a3b42bfSRobert Love void *, unsigned int timer_msec); 50142e9a92fSRobert Love 50242e9a92fSRobert Love /* 503b277d2aaSYi Zou * Sets up the DDP context for a given exchange id on the given 504b277d2aaSYi Zou * scatterlist if LLD supports DDP for large receive. 505b277d2aaSYi Zou * 506b277d2aaSYi Zou * STATUS: OPTIONAL 507b277d2aaSYi Zou */ 5083a3b42bfSRobert Love int (*ddp_setup)(struct fc_lport *, u16, struct scatterlist *, 5093a3b42bfSRobert Love unsigned int); 510b277d2aaSYi Zou /* 511b277d2aaSYi Zou * Completes the DDP transfer and returns the length of data DDPed 512b277d2aaSYi Zou * for the given exchange id. 513b277d2aaSYi Zou * 514b277d2aaSYi Zou * STATUS: OPTIONAL 515b277d2aaSYi Zou */ 5163a3b42bfSRobert Love int (*ddp_done)(struct fc_lport *, u16); 517b277d2aaSYi Zou /* 51833dc362bSYi Zou * Sets up the DDP context for a given exchange id on the given 5191bd49b48SVasu Dev * scatterlist if LLD supports DDP for target. 52033dc362bSYi Zou * 52133dc362bSYi Zou * STATUS: OPTIONAL 52233dc362bSYi Zou */ 52333dc362bSYi Zou int (*ddp_target)(struct fc_lport *, u16, struct scatterlist *, 52433dc362bSYi Zou unsigned int); 52533dc362bSYi Zou /* 526b84056bfSYi Zou * Allow LLD to fill its own Link Error Status Block 527b84056bfSYi Zou * 528b84056bfSYi Zou * STATUS: OPTIONAL 529b84056bfSYi Zou */ 530b84056bfSYi Zou void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb); 531b84056bfSYi Zou /* 5320ae4d4aeSRobert Love * Send a frame using an existing sequence and exchange. 5330ae4d4aeSRobert Love * 5340ae4d4aeSRobert Love * STATUS: OPTIONAL 53542e9a92fSRobert Love */ 5363a3b42bfSRobert Love int (*seq_send)(struct fc_lport *, struct fc_seq *, 5373a3b42bfSRobert Love struct fc_frame *); 53842e9a92fSRobert Love 53942e9a92fSRobert Love /* 54025985edcSLucas De Marchi * Send an ELS response using information from the received frame. 5410ae4d4aeSRobert Love * 5420ae4d4aeSRobert Love * STATUS: OPTIONAL 54342e9a92fSRobert Love */ 54492261156SJoe Eykholt void (*seq_els_rsp_send)(struct fc_frame *, enum fc_els_cmd, 5453a3b42bfSRobert Love struct fc_seq_els_data *); 54642e9a92fSRobert Love 54742e9a92fSRobert Love /* 54842e9a92fSRobert Love * Abort an exchange and sequence. Generally called because of a 54942e9a92fSRobert Love * exchange timeout or an abort from the upper layer. 55042e9a92fSRobert Love * 55142e9a92fSRobert Love * A timer_msec can be specified for abort timeout, if non-zero 55242e9a92fSRobert Love * timer_msec value is specified then exchange resp handler 55342e9a92fSRobert Love * will be called with timeout error if no response to abort. 5540ae4d4aeSRobert Love * 5550ae4d4aeSRobert Love * STATUS: OPTIONAL 55642e9a92fSRobert Love */ 5573a3b42bfSRobert Love int (*seq_exch_abort)(const struct fc_seq *, 55842e9a92fSRobert Love unsigned int timer_msec); 55942e9a92fSRobert Love 56042e9a92fSRobert Love /* 56142e9a92fSRobert Love * Indicate that an exchange/sequence tuple is complete and the memory 56242e9a92fSRobert Love * allocated for the related objects may be freed. 5630ae4d4aeSRobert Love * 5640ae4d4aeSRobert Love * STATUS: OPTIONAL 56542e9a92fSRobert Love */ 5663a3b42bfSRobert Love void (*exch_done)(struct fc_seq *); 56742e9a92fSRobert Love 56842e9a92fSRobert Love /* 56942e9a92fSRobert Love * Start a new sequence on the same exchange/sequence tuple. 5700ae4d4aeSRobert Love * 5710ae4d4aeSRobert Love * STATUS: OPTIONAL 57242e9a92fSRobert Love */ 5733a3b42bfSRobert Love struct fc_seq *(*seq_start_next)(struct fc_seq *); 57442e9a92fSRobert Love 57542e9a92fSRobert Love /* 5761a5c2d7eSJoe Eykholt * Set a response handler for the exchange of the sequence. 5771a5c2d7eSJoe Eykholt * 5781a5c2d7eSJoe Eykholt * STATUS: OPTIONAL 5791a5c2d7eSJoe Eykholt */ 5801a5c2d7eSJoe Eykholt void (*seq_set_resp)(struct fc_seq *sp, 5811a5c2d7eSJoe Eykholt void (*resp)(struct fc_seq *, struct fc_frame *, 5821a5c2d7eSJoe Eykholt void *), 5831a5c2d7eSJoe Eykholt void *arg); 5841a5c2d7eSJoe Eykholt 5851a5c2d7eSJoe Eykholt /* 586239e8104SJoe Eykholt * Assign a sequence for an incoming request frame. 587239e8104SJoe Eykholt * 588239e8104SJoe Eykholt * STATUS: OPTIONAL 589239e8104SJoe Eykholt */ 590239e8104SJoe Eykholt struct fc_seq *(*seq_assign)(struct fc_lport *, struct fc_frame *); 591239e8104SJoe Eykholt 592239e8104SJoe Eykholt /* 59362bdb645SJoe Eykholt * Release the reference on the sequence returned by seq_assign(). 59462bdb645SJoe Eykholt * 59562bdb645SJoe Eykholt * STATUS: OPTIONAL 59662bdb645SJoe Eykholt */ 59762bdb645SJoe Eykholt void (*seq_release)(struct fc_seq *); 59862bdb645SJoe Eykholt 59962bdb645SJoe Eykholt /* 60042e9a92fSRobert Love * Reset an exchange manager, completing all sequences and exchanges. 60142e9a92fSRobert Love * If s_id is non-zero, reset only exchanges originating from that FID. 60242e9a92fSRobert Love * If d_id is non-zero, reset only exchanges sending to that FID. 6030ae4d4aeSRobert Love * 6040ae4d4aeSRobert Love * STATUS: OPTIONAL 60542e9a92fSRobert Love */ 6063a3b42bfSRobert Love void (*exch_mgr_reset)(struct fc_lport *, u32 s_id, u32 d_id); 60742e9a92fSRobert Love 6080ae4d4aeSRobert Love /* 6090ae4d4aeSRobert Love * Flush the rport work queue. Generally used before shutdown. 6100ae4d4aeSRobert Love * 6110ae4d4aeSRobert Love * STATUS: OPTIONAL 61242e9a92fSRobert Love */ 6130ae4d4aeSRobert Love void (*rport_flush_queue)(void); 61442e9a92fSRobert Love 61542e9a92fSRobert Love /* 6160ae4d4aeSRobert Love * Receive a frame for a local port. 6170ae4d4aeSRobert Love * 6180ae4d4aeSRobert Love * STATUS: OPTIONAL 61942e9a92fSRobert Love */ 62092261156SJoe Eykholt void (*lport_recv)(struct fc_lport *, struct fc_frame *); 62142e9a92fSRobert Love 6220ae4d4aeSRobert Love /* 6230ae4d4aeSRobert Love * Reset the local port. 6240ae4d4aeSRobert Love * 6250ae4d4aeSRobert Love * STATUS: OPTIONAL 62642e9a92fSRobert Love */ 6270ae4d4aeSRobert Love int (*lport_reset)(struct fc_lport *); 62842e9a92fSRobert Love 62942e9a92fSRobert Love /* 630093bb6a2SJoe Eykholt * Set the local port FC_ID. 631093bb6a2SJoe Eykholt * 632093bb6a2SJoe Eykholt * This may be provided by the LLD to allow it to be 633093bb6a2SJoe Eykholt * notified when the local port is assigned a FC-ID. 634093bb6a2SJoe Eykholt * 635093bb6a2SJoe Eykholt * The frame, if non-NULL, is the incoming frame with the 636093bb6a2SJoe Eykholt * FLOGI LS_ACC or FLOGI, and may contain the granted MAC 637093bb6a2SJoe Eykholt * address for the LLD. The frame pointer may be NULL if 638093bb6a2SJoe Eykholt * no MAC is associated with this assignment (LOGO or PLOGI). 639093bb6a2SJoe Eykholt * 640093bb6a2SJoe Eykholt * If FC_ID is non-zero, r_a_tov and e_d_tov must be valid. 641093bb6a2SJoe Eykholt * 642093bb6a2SJoe Eykholt * Note: this is called with the local port mutex held. 643093bb6a2SJoe Eykholt * 644093bb6a2SJoe Eykholt * STATUS: OPTIONAL 645093bb6a2SJoe Eykholt */ 646093bb6a2SJoe Eykholt void (*lport_set_port_id)(struct fc_lport *, u32 port_id, 647093bb6a2SJoe Eykholt struct fc_frame *); 648093bb6a2SJoe Eykholt 649093bb6a2SJoe Eykholt /* 6509737e6a7SRobert Love * Create a remote port with a given port ID 6519737e6a7SRobert Love * 6529737e6a7SRobert Love * STATUS: OPTIONAL 6535101ff99SRobert Love */ 6549737e6a7SRobert Love struct fc_rport_priv *(*rport_create)(struct fc_lport *, u32); 6555101ff99SRobert Love 6565101ff99SRobert Love /* 65742e9a92fSRobert Love * Initiates the RP state machine. It is called from the LP module. 65842e9a92fSRobert Love * This function will issue the following commands to the N_Port 65942e9a92fSRobert Love * identified by the FC ID provided. 66042e9a92fSRobert Love * 66142e9a92fSRobert Love * - PLOGI 66242e9a92fSRobert Love * - PRLI 66342e9a92fSRobert Love * - RTV 6640ae4d4aeSRobert Love * 6650ae4d4aeSRobert Love * STATUS: OPTIONAL 66642e9a92fSRobert Love */ 6679fb9d328SJoe Eykholt int (*rport_login)(struct fc_rport_priv *); 66842e9a92fSRobert Love 66942e9a92fSRobert Love /* 67042e9a92fSRobert Love * Logoff, and remove the rport from the transport if 67142e9a92fSRobert Love * it had been added. This will send a LOGO to the target. 6720ae4d4aeSRobert Love * 6730ae4d4aeSRobert Love * STATUS: OPTIONAL 67442e9a92fSRobert Love */ 6759fb9d328SJoe Eykholt int (*rport_logoff)(struct fc_rport_priv *); 67642e9a92fSRobert Love 67742e9a92fSRobert Love /* 67825985edcSLucas De Marchi * Receive a request from a remote port. 6790ae4d4aeSRobert Love * 6800ae4d4aeSRobert Love * STATUS: OPTIONAL 68142e9a92fSRobert Love */ 68292261156SJoe Eykholt void (*rport_recv_req)(struct fc_lport *, struct fc_frame *); 68342e9a92fSRobert Love 6840ae4d4aeSRobert Love /* 6850ae4d4aeSRobert Love * lookup an rport by it's port ID. 6860ae4d4aeSRobert Love * 6870ae4d4aeSRobert Love * STATUS: OPTIONAL 68842e9a92fSRobert Love */ 6899fb9d328SJoe Eykholt struct fc_rport_priv *(*rport_lookup)(const struct fc_lport *, u32); 69042e9a92fSRobert Love 69142e9a92fSRobert Love /* 692f211fa51SJoe Eykholt * Destroy an rport after final kref_put(). 693f211fa51SJoe Eykholt * The argument is a pointer to the kref inside the fc_rport_priv. 694f211fa51SJoe Eykholt */ 695f211fa51SJoe Eykholt void (*rport_destroy)(struct kref *); 696f211fa51SJoe Eykholt 697f211fa51SJoe Eykholt /* 69875a2792dSBhanu Prakash Gollapudi * Callback routine after the remote port is logged in 69975a2792dSBhanu Prakash Gollapudi * 70075a2792dSBhanu Prakash Gollapudi * STATUS: OPTIONAL 70175a2792dSBhanu Prakash Gollapudi */ 70275a2792dSBhanu Prakash Gollapudi void (*rport_event_callback)(struct fc_lport *, 70375a2792dSBhanu Prakash Gollapudi struct fc_rport_priv *, 70475a2792dSBhanu Prakash Gollapudi enum fc_rport_event); 70575a2792dSBhanu Prakash Gollapudi 70675a2792dSBhanu Prakash Gollapudi /* 70742e9a92fSRobert Love * Send a fcp cmd from fsp pkt. 70842e9a92fSRobert Love * Called with the SCSI host lock unlocked and irqs disabled. 70942e9a92fSRobert Love * 71042e9a92fSRobert Love * The resp handler is called when FCP_RSP received. 71142e9a92fSRobert Love * 7120ae4d4aeSRobert Love * STATUS: OPTIONAL 71342e9a92fSRobert Love */ 7143a3b42bfSRobert Love int (*fcp_cmd_send)(struct fc_lport *, struct fc_fcp_pkt *, 7153a3b42bfSRobert Love void (*resp)(struct fc_seq *, struct fc_frame *, 7163a3b42bfSRobert Love void *)); 71742e9a92fSRobert Love 71842e9a92fSRobert Love /* 71925985edcSLucas De Marchi * Cleanup the FCP layer, used during link down and reset 7200ae4d4aeSRobert Love * 7210ae4d4aeSRobert Love * STATUS: OPTIONAL 72242e9a92fSRobert Love */ 7233a3b42bfSRobert Love void (*fcp_cleanup)(struct fc_lport *); 72442e9a92fSRobert Love 72542e9a92fSRobert Love /* 72642e9a92fSRobert Love * Abort all I/O on a local port 7270ae4d4aeSRobert Love * 7280ae4d4aeSRobert Love * STATUS: OPTIONAL 72942e9a92fSRobert Love */ 7303a3b42bfSRobert Love void (*fcp_abort_io)(struct fc_lport *); 73142e9a92fSRobert Love 7320ae4d4aeSRobert Love /* 7330ae4d4aeSRobert Love * Receive a request for the discovery layer. 7340ae4d4aeSRobert Love * 7350ae4d4aeSRobert Love * STATUS: OPTIONAL 73642e9a92fSRobert Love */ 73792261156SJoe Eykholt void (*disc_recv_req)(struct fc_lport *, struct fc_frame *); 73842e9a92fSRobert Love 73942e9a92fSRobert Love /* 74042e9a92fSRobert Love * Start discovery for a local port. 7410ae4d4aeSRobert Love * 7420ae4d4aeSRobert Love * STATUS: OPTIONAL 74342e9a92fSRobert Love */ 74442e9a92fSRobert Love void (*disc_start)(void (*disc_callback)(struct fc_lport *, 74542e9a92fSRobert Love enum fc_disc_event), 74642e9a92fSRobert Love struct fc_lport *); 74742e9a92fSRobert Love 74842e9a92fSRobert Love /* 74942e9a92fSRobert Love * Stop discovery for a given lport. This will remove 75042e9a92fSRobert Love * all discovered rports 7510ae4d4aeSRobert Love * 7520ae4d4aeSRobert Love * STATUS: OPTIONAL 75342e9a92fSRobert Love */ 75442e9a92fSRobert Love void (*disc_stop) (struct fc_lport *); 75542e9a92fSRobert Love 75642e9a92fSRobert Love /* 75742e9a92fSRobert Love * Stop discovery for a given lport. This will block 75842e9a92fSRobert Love * until all discovered rports are deleted from the 75942e9a92fSRobert Love * FC transport class 7600ae4d4aeSRobert Love * 7610ae4d4aeSRobert Love * STATUS: OPTIONAL 76242e9a92fSRobert Love */ 76342e9a92fSRobert Love void (*disc_stop_final) (struct fc_lport *); 76442e9a92fSRobert Love }; 76542e9a92fSRobert Love 7663a3b42bfSRobert Love /** 7673a3b42bfSRobert Love * struct fc_disc - Discovery context 7683a3b42bfSRobert Love * @retry_count: Number of retries 7693a3b42bfSRobert Love * @pending: 1 if discovery is pending, 0 if not 770c531b9b4SBhanu Prakash Gollapudi * @requested: 1 if discovery has been requested, 0 if not 7713a3b42bfSRobert Love * @seq_count: Number of sequences used for discovery 7723a3b42bfSRobert Love * @buf_len: Length of the discovery buffer 7733a3b42bfSRobert Love * @disc_id: Discovery ID 7743a3b42bfSRobert Love * @rports: List of discovered remote ports 7750685230cSJoe Eykholt * @priv: Private pointer for use by discovery code 7763a3b42bfSRobert Love * @disc_mutex: Mutex that protects the discovery context 7773a3b42bfSRobert Love * @partial_buf: Partial name buffer (if names are returned 7783a3b42bfSRobert Love * in multiple frames) 7793a3b42bfSRobert Love * @disc_work: handle for delayed work context 7803a3b42bfSRobert Love * @disc_callback: Callback routine called when discovery completes 7813a3b42bfSRobert Love */ 78242e9a92fSRobert Love struct fc_disc { 78342e9a92fSRobert Love unsigned char retry_count; 78442e9a92fSRobert Love unsigned char pending; 78542e9a92fSRobert Love unsigned char requested; 78642e9a92fSRobert Love unsigned short seq_count; 78742e9a92fSRobert Love unsigned char buf_len; 7880f6c6149SJoe Eykholt u16 disc_id; 78942e9a92fSRobert Love 79042e9a92fSRobert Love struct list_head rports; 7910685230cSJoe Eykholt void *priv; 79242e9a92fSRobert Love struct mutex disc_mutex; 7933a3b42bfSRobert Love struct fc_gpn_ft_resp partial_buf; 79442e9a92fSRobert Love struct delayed_work disc_work; 7953a3b42bfSRobert Love 7963a3b42bfSRobert Love void (*disc_callback)(struct fc_lport *, 7973a3b42bfSRobert Love enum fc_disc_event); 79842e9a92fSRobert Love }; 79942e9a92fSRobert Love 80070d53b04SJoe Eykholt /* 80170d53b04SJoe Eykholt * Local port notifier and events. 80270d53b04SJoe Eykholt */ 80370d53b04SJoe Eykholt extern struct blocking_notifier_head fc_lport_notifier_head; 80470d53b04SJoe Eykholt enum fc_lport_event { 80570d53b04SJoe Eykholt FC_LPORT_EV_ADD, 80670d53b04SJoe Eykholt FC_LPORT_EV_DEL, 80770d53b04SJoe Eykholt }; 80870d53b04SJoe Eykholt 8093a3b42bfSRobert Love /** 8103a3b42bfSRobert Love * struct fc_lport - Local port 8113a3b42bfSRobert Love * @host: The SCSI host associated with a local port 8123a3b42bfSRobert Love * @ema_list: Exchange manager anchor list 8133a3b42bfSRobert Love * @dns_rdata: The directory server remote port 814d78c317fSNeerav Parikh * @ms_rdata: The management server remote port 8153a3b42bfSRobert Love * @ptp_rdata: Point to point remote port 8163a3b42bfSRobert Love * @scsi_priv: FCP layer internal data 8173a3b42bfSRobert Love * @disc: Discovery context 8183a3b42bfSRobert Love * @vports: Child vports if N_Port 8193a3b42bfSRobert Love * @vport: Parent vport if VN_Port 8203a3b42bfSRobert Love * @tt: Libfc function template 8213a3b42bfSRobert Love * @link_up: Link state (1 = link up, 0 = link down) 8223a3b42bfSRobert Love * @qfull: Queue state (1 queue is full, 0 queue is not full) 8233a3b42bfSRobert Love * @state: Identifies the state 8243a3b42bfSRobert Love * @boot_time: Timestamp indicating when the local port came online 8253a3b42bfSRobert Love * @host_stats: SCSI host statistics 8261bd49b48SVasu Dev * @stats: FC local port stats (TODO separate libfc LLD stats) 8273a3b42bfSRobert Love * @retry_count: Number of retries in the current state 8287b2787ecSRobert Love * @port_id: FC Port ID 8293a3b42bfSRobert Love * @wwpn: World Wide Port Name 8303a3b42bfSRobert Love * @wwnn: World Wide Node Name 8313a3b42bfSRobert Love * @service_params: Common service parameters 8323a3b42bfSRobert Love * @e_d_tov: Error detection timeout value 8333a3b42bfSRobert Love * @r_a_tov: Resouce allocation timeout value 8343a3b42bfSRobert Love * @rnid_gen: RNID information 8353a3b42bfSRobert Love * @sg_supp: Indicates if scatter gather is supported 8363a3b42bfSRobert Love * @seq_offload: Indicates if sequence offload is supported 8373a3b42bfSRobert Love * @crc_offload: Indicates if CRC offload is supported 8383a3b42bfSRobert Love * @lro_enabled: Indicates if large receive offload is supported 8393a3b42bfSRobert Love * @does_npiv: Supports multiple vports 8403a3b42bfSRobert Love * @npiv_enabled: Switch/fabric allows NPIV 8413a3b42bfSRobert Love * @mfs: The maximum Fibre Channel payload size 8423a3b42bfSRobert Love * @max_retry_count: The maximum retry attempts 8433a3b42bfSRobert Love * @max_rport_retry_count: The maximum remote port retry attempts 844f90377abSJoe Eykholt * @rport_priv_size: Size needed by driver after struct fc_rport_priv 8453a3b42bfSRobert Love * @lro_xid: The maximum XID for LRO 8463a3b42bfSRobert Love * @lso_max: The maximum large offload send size 8473a3b42bfSRobert Love * @fcts: FC-4 type mask 8483a3b42bfSRobert Love * @lp_mutex: Mutex to protect the local port 84970d53b04SJoe Eykholt * @list: Linkage on list of vport peers 8503a3b42bfSRobert Love * @retry_work: Handle to local port for delayed retry context 851baf9fdf0SJoe Eykholt * @prov: Pointers available for use by passive FC-4 providers 85270d53b04SJoe Eykholt * @lport_list: Linkage on module-wide list of local ports 8533a3b42bfSRobert Love */ 85442e9a92fSRobert Love struct fc_lport { 85542e9a92fSRobert Love /* Associations */ 85642e9a92fSRobert Love struct Scsi_Host *host; 85796316099SVasu Dev struct list_head ema_list; 8583a3b42bfSRobert Love struct fc_rport_priv *dns_rdata; 859d78c317fSNeerav Parikh struct fc_rport_priv *ms_rdata; 8603a3b42bfSRobert Love struct fc_rport_priv *ptp_rdata; 86142e9a92fSRobert Love void *scsi_priv; 86242e9a92fSRobert Love struct fc_disc disc; 86342e9a92fSRobert Love 8643a3b42bfSRobert Love /* Virtual port information */ 8653a3b42bfSRobert Love struct list_head vports; 8663a3b42bfSRobert Love struct fc_vport *vport; 8673a3b42bfSRobert Love 86842e9a92fSRobert Love /* Operational Information */ 86942e9a92fSRobert Love struct libfc_function_template tt; 870bc0e17f6SVasu Dev u8 link_up; 871bc0e17f6SVasu Dev u8 qfull; 87242e9a92fSRobert Love enum fc_lport_state state; 87342e9a92fSRobert Love unsigned long boot_time; 87442e9a92fSRobert Love struct fc_host_statistics host_stats; 8751bd49b48SVasu Dev struct fc_stats __percpu *stats; 87642e9a92fSRobert Love u8 retry_count; 87742e9a92fSRobert Love 8783a3b42bfSRobert Love /* Fabric information */ 8797b2787ecSRobert Love u32 port_id; 8803a3b42bfSRobert Love u64 wwpn; 8813a3b42bfSRobert Love u64 wwnn; 88242e9a92fSRobert Love unsigned int service_params; 88342e9a92fSRobert Love unsigned int e_d_tov; 88442e9a92fSRobert Love unsigned int r_a_tov; 8853a3b42bfSRobert Love struct fc_els_rnid_gen rnid_gen; 8863a3b42bfSRobert Love 8873a3b42bfSRobert Love /* Capabilities */ 8883a3b42bfSRobert Love u32 sg_supp:1; 8893a3b42bfSRobert Love u32 seq_offload:1; 8903a3b42bfSRobert Love u32 crc_offload:1; 8913a3b42bfSRobert Love u32 lro_enabled:1; 8923a3b42bfSRobert Love u32 does_npiv:1; 8933a3b42bfSRobert Love u32 npiv_enabled:1; 8943726f358SJoe Eykholt u32 point_to_multipoint:1; 895d78c317fSNeerav Parikh u32 fdmi_enabled:1; 8963a3b42bfSRobert Love u32 mfs; 89742e9a92fSRobert Love u8 max_retry_count; 898a3666955SAbhijeet Joglekar u8 max_rport_retry_count; 899f90377abSJoe Eykholt u16 rport_priv_size; 90042e9a92fSRobert Love u16 link_speed; 90142e9a92fSRobert Love u16 link_supported_speeds; 9023a3b42bfSRobert Love u16 lro_xid; 9033a3b42bfSRobert Love unsigned int lso_max; 9043a3b42bfSRobert Love struct fc_ns_fts fcts; 90542e9a92fSRobert Love 90642e9a92fSRobert Love /* Miscellaneous */ 9073a3b42bfSRobert Love struct mutex lp_mutex; 9083a3b42bfSRobert Love struct list_head list; 90942e9a92fSRobert Love struct delayed_work retry_work; 910baf9fdf0SJoe Eykholt void *prov[FC_FC4_PROV_SIZE]; 91170d53b04SJoe Eykholt struct list_head lport_list; 91242e9a92fSRobert Love }; 91342e9a92fSRobert Love 91496ad8464SJoe Eykholt /** 91596ad8464SJoe Eykholt * struct fc4_prov - FC-4 provider registration 91696ad8464SJoe Eykholt * @prli: Handler for incoming PRLI 91796ad8464SJoe Eykholt * @prlo: Handler for session reset 91896ad8464SJoe Eykholt * @recv: Handler for incoming request 91996ad8464SJoe Eykholt * @module: Pointer to module. May be NULL. 92096ad8464SJoe Eykholt */ 92196ad8464SJoe Eykholt struct fc4_prov { 92296ad8464SJoe Eykholt int (*prli)(struct fc_rport_priv *, u32 spp_len, 92396ad8464SJoe Eykholt const struct fc_els_spp *spp_in, 92496ad8464SJoe Eykholt struct fc_els_spp *spp_out); 92596ad8464SJoe Eykholt void (*prlo)(struct fc_rport_priv *); 92696ad8464SJoe Eykholt void (*recv)(struct fc_lport *, struct fc_frame *); 92796ad8464SJoe Eykholt struct module *module; 92896ad8464SJoe Eykholt }; 92996ad8464SJoe Eykholt 93096ad8464SJoe Eykholt /* 93196ad8464SJoe Eykholt * Register FC-4 provider with libfc. 93296ad8464SJoe Eykholt */ 93396ad8464SJoe Eykholt int fc_fc4_register_provider(enum fc_fh_type type, struct fc4_prov *); 93496ad8464SJoe Eykholt void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *); 93596ad8464SJoe Eykholt 93634f42a07SRobert Love /* 93742e9a92fSRobert Love * FC_LPORT HELPER FUNCTIONS 93842e9a92fSRobert Love *****************************/ 9393a3b42bfSRobert Love 9403a3b42bfSRobert Love /** 9413a3b42bfSRobert Love * fc_lport_test_ready() - Determine if a local port is in the READY state 9423a3b42bfSRobert Love * @lport: The local port to test 9433a3b42bfSRobert Love */ 9443a3b42bfSRobert Love static inline int fc_lport_test_ready(struct fc_lport *lport) 94542e9a92fSRobert Love { 9463a3b42bfSRobert Love return lport->state == LPORT_ST_READY; 94742e9a92fSRobert Love } 94842e9a92fSRobert Love 9493a3b42bfSRobert Love /** 9503a3b42bfSRobert Love * fc_set_wwnn() - Set the World Wide Node Name of a local port 9513a3b42bfSRobert Love * @lport: The local port whose WWNN is to be set 9523a3b42bfSRobert Love * @wwnn: The new WWNN 9533a3b42bfSRobert Love */ 9543a3b42bfSRobert Love static inline void fc_set_wwnn(struct fc_lport *lport, u64 wwnn) 95542e9a92fSRobert Love { 9563a3b42bfSRobert Love lport->wwnn = wwnn; 95742e9a92fSRobert Love } 95842e9a92fSRobert Love 9593a3b42bfSRobert Love /** 9603a3b42bfSRobert Love * fc_set_wwpn() - Set the World Wide Port Name of a local port 9613a3b42bfSRobert Love * @lport: The local port whose WWPN is to be set 9623a3b42bfSRobert Love * @wwnn: The new WWPN 9633a3b42bfSRobert Love */ 9643a3b42bfSRobert Love static inline void fc_set_wwpn(struct fc_lport *lport, u64 wwnn) 96542e9a92fSRobert Love { 9663a3b42bfSRobert Love lport->wwpn = wwnn; 96742e9a92fSRobert Love } 96842e9a92fSRobert Love 9693a3b42bfSRobert Love /** 9703a3b42bfSRobert Love * fc_lport_state_enter() - Change a local port's state 9713a3b42bfSRobert Love * @lport: The local port whose state is to change 9723a3b42bfSRobert Love * @state: The new state 9733a3b42bfSRobert Love */ 9743a3b42bfSRobert Love static inline void fc_lport_state_enter(struct fc_lport *lport, 97542e9a92fSRobert Love enum fc_lport_state state) 97642e9a92fSRobert Love { 9773a3b42bfSRobert Love if (state != lport->state) 9783a3b42bfSRobert Love lport->retry_count = 0; 9793a3b42bfSRobert Love lport->state = state; 98042e9a92fSRobert Love } 98142e9a92fSRobert Love 9823a3b42bfSRobert Love /** 9833a3b42bfSRobert Love * fc_lport_init_stats() - Allocate per-CPU statistics for a local port 9843a3b42bfSRobert Love * @lport: The local port whose statistics are to be initialized 9853a3b42bfSRobert Love */ 9863a3b42bfSRobert Love static inline int fc_lport_init_stats(struct fc_lport *lport) 987582b45bcSRobert Love { 9881bd49b48SVasu Dev lport->stats = alloc_percpu(struct fc_stats); 9891bd49b48SVasu Dev if (!lport->stats) 990582b45bcSRobert Love return -ENOMEM; 991582b45bcSRobert Love return 0; 992582b45bcSRobert Love } 993582b45bcSRobert Love 9943a3b42bfSRobert Love /** 9953a3b42bfSRobert Love * fc_lport_free_stats() - Free memory for a local port's statistics 9963a3b42bfSRobert Love * @lport: The local port whose statistics are to be freed 9973a3b42bfSRobert Love */ 9983a3b42bfSRobert Love static inline void fc_lport_free_stats(struct fc_lport *lport) 999582b45bcSRobert Love { 10001bd49b48SVasu Dev free_percpu(lport->stats); 1001a0a25da2SVasu Dev } 1002a0a25da2SVasu Dev 1003a0a25da2SVasu Dev /** 10043a3b42bfSRobert Love * lport_priv() - Return the private data from a local port 10053a3b42bfSRobert Love * @lport: The local port whose private data is to be retreived 10063a3b42bfSRobert Love */ 10073a3b42bfSRobert Love static inline void *lport_priv(const struct fc_lport *lport) 10083a3b42bfSRobert Love { 10093a3b42bfSRobert Love return (void *)(lport + 1); 10103a3b42bfSRobert Love } 10113a3b42bfSRobert Love 10123a3b42bfSRobert Love /** 10133a3b42bfSRobert Love * libfc_host_alloc() - Allocate a Scsi_Host with room for a local port and 10143a3b42bfSRobert Love * LLD private data 10153a3b42bfSRobert Love * @sht: The SCSI host template 10163a3b42bfSRobert Love * @priv_size: Size of private data 1017a0a25da2SVasu Dev * 101886221969SChris Leech * Returns: libfc lport 1019a0a25da2SVasu Dev */ 102086221969SChris Leech static inline struct fc_lport * 1021a0a25da2SVasu Dev libfc_host_alloc(struct scsi_host_template *sht, int priv_size) 1022a0a25da2SVasu Dev { 102386221969SChris Leech struct fc_lport *lport; 102486221969SChris Leech struct Scsi_Host *shost; 102586221969SChris Leech 102686221969SChris Leech shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size); 102786221969SChris Leech if (!shost) 102886221969SChris Leech return NULL; 102986221969SChris Leech lport = shost_priv(shost); 103086221969SChris Leech lport->host = shost; 103186221969SChris Leech INIT_LIST_HEAD(&lport->ema_list); 1032174e1ebfSChris Leech INIT_LIST_HEAD(&lport->vports); 103386221969SChris Leech return lport; 1034a0a25da2SVasu Dev } 103542e9a92fSRobert Love 103634f42a07SRobert Love /* 10373a3b42bfSRobert Love * FC_FCP HELPER FUNCTIONS 10383a3b42bfSRobert Love *****************************/ 10393a3b42bfSRobert Love static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp) 10403a3b42bfSRobert Love { 10413a3b42bfSRobert Love if (fsp && fsp->cmd) 10423a3b42bfSRobert Love return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE; 10433a3b42bfSRobert Love return false; 10443a3b42bfSRobert Love } 10453a3b42bfSRobert Love 10463a3b42bfSRobert Love /* 104742e9a92fSRobert Love * LOCAL PORT LAYER 104842e9a92fSRobert Love *****************************/ 10493a3b42bfSRobert Love int fc_lport_init(struct fc_lport *); 10503a3b42bfSRobert Love int fc_lport_destroy(struct fc_lport *); 10513a3b42bfSRobert Love int fc_fabric_logoff(struct fc_lport *); 10523a3b42bfSRobert Love int fc_fabric_login(struct fc_lport *); 10538faecddbSChris Leech void __fc_linkup(struct fc_lport *); 105442e9a92fSRobert Love void fc_linkup(struct fc_lport *); 10558faecddbSChris Leech void __fc_linkdown(struct fc_lport *); 105642e9a92fSRobert Love void fc_linkdown(struct fc_lport *); 10573a3b42bfSRobert Love void fc_vport_setlink(struct fc_lport *); 10583a3b42bfSRobert Love void fc_vports_linkchange(struct fc_lport *); 105942e9a92fSRobert Love int fc_lport_config(struct fc_lport *); 106042e9a92fSRobert Love int fc_lport_reset(struct fc_lport *); 10613a3b42bfSRobert Love int fc_set_mfs(struct fc_lport *, u32 mfs); 10623a3b42bfSRobert Love struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize); 10633a3b42bfSRobert Love struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id); 10643a3b42bfSRobert Love int fc_lport_bsg_request(struct fc_bsg_job *); 10653726f358SJoe Eykholt void fc_lport_set_local_id(struct fc_lport *, u32 port_id); 106670d53b04SJoe Eykholt void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *); 1067a51ab396SSteve Ma 1068a51ab396SSteve Ma /* 106942e9a92fSRobert Love * REMOTE PORT LAYER 107042e9a92fSRobert Love *****************************/ 10713a3b42bfSRobert Love int fc_rport_init(struct fc_lport *); 10723a3b42bfSRobert Love void fc_rport_terminate_io(struct fc_rport *); 107342e9a92fSRobert Love 107434f42a07SRobert Love /* 107542e9a92fSRobert Love * DISCOVERY LAYER 107642e9a92fSRobert Love *****************************/ 10770807619dSRobert Love void fc_disc_init(struct fc_lport *); 10780807619dSRobert Love void fc_disc_config(struct fc_lport *, void *); 107942e9a92fSRobert Love 10800685230cSJoe Eykholt static inline struct fc_lport *fc_disc_lport(struct fc_disc *disc) 10810685230cSJoe Eykholt { 10820685230cSJoe Eykholt return container_of(disc, struct fc_lport, disc); 10830685230cSJoe Eykholt } 10840685230cSJoe Eykholt 108534f42a07SRobert Love /* 10863a3b42bfSRobert Love * FCP LAYER 108742e9a92fSRobert Love *****************************/ 108842e9a92fSRobert Love int fc_fcp_init(struct fc_lport *); 108942e9a92fSRobert Love void fc_fcp_destroy(struct fc_lport *); 109042e9a92fSRobert Love 109134f42a07SRobert Love /* 10923a3b42bfSRobert Love * SCSI INTERACTION LAYER 10933a3b42bfSRobert Love *****************************/ 1094f281233dSJeff Garzik int fc_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); 10953a3b42bfSRobert Love int fc_eh_abort(struct scsi_cmnd *); 10963a3b42bfSRobert Love int fc_eh_device_reset(struct scsi_cmnd *); 10973a3b42bfSRobert Love int fc_eh_host_reset(struct scsi_cmnd *); 10983a3b42bfSRobert Love int fc_slave_alloc(struct scsi_device *); 10993a3b42bfSRobert Love int fc_change_queue_depth(struct scsi_device *, int qdepth, int reason); 11003a3b42bfSRobert Love int fc_change_queue_type(struct scsi_device *, int tag_type); 11013a3b42bfSRobert Love 11023a3b42bfSRobert Love /* 110342e9a92fSRobert Love * ELS/CT interface 110442e9a92fSRobert Love *****************************/ 11053a3b42bfSRobert Love int fc_elsct_init(struct fc_lport *); 11063a3b42bfSRobert Love struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did, 11073a3b42bfSRobert Love struct fc_frame *, 110811b56188SChris Leech unsigned int op, 110911b56188SChris Leech void (*resp)(struct fc_seq *, 11103a3b42bfSRobert Love struct fc_frame *, 111111b56188SChris Leech void *arg), 111211b56188SChris Leech void *arg, u32 timer_msec); 111311b56188SChris Leech void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *); 111411b56188SChris Leech void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *); 111524f089e2SJoe Eykholt void fc_fill_reply_hdr(struct fc_frame *, const struct fc_frame *, 111624f089e2SJoe Eykholt enum fc_rctl, u32 parm_offset); 111724f089e2SJoe Eykholt void fc_fill_hdr(struct fc_frame *, const struct fc_frame *, 111824f089e2SJoe Eykholt enum fc_rctl, u32 f_ctl, u16 seq_cnt, u32 parm_offset); 111942e9a92fSRobert Love 112042e9a92fSRobert Love 112134f42a07SRobert Love /* 112242e9a92fSRobert Love * EXCHANGE MANAGER LAYER 112342e9a92fSRobert Love *****************************/ 11243a3b42bfSRobert Love int fc_exch_init(struct fc_lport *); 11254e5fae7aSVasu Dev void fc_exch_update_stats(struct fc_lport *lport); 11263a3b42bfSRobert Love struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *, 11273a3b42bfSRobert Love struct fc_exch_mgr *, 112896316099SVasu Dev bool (*match)(struct fc_frame *)); 11293a3b42bfSRobert Love void fc_exch_mgr_del(struct fc_exch_mgr_anchor *); 1130174e1ebfSChris Leech int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst); 11313a3b42bfSRobert Love struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class, 11323a3b42bfSRobert Love u16 min_xid, u16 max_xid, 113352ff878cSVasu Dev bool (*match)(struct fc_frame *)); 11343a3b42bfSRobert Love void fc_exch_mgr_free(struct fc_lport *); 11353a3b42bfSRobert Love void fc_exch_recv(struct fc_lport *, struct fc_frame *); 11361f6ff364SAbhijeet Joglekar void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id); 113742e9a92fSRobert Love 113842e9a92fSRobert Love /* 113942e9a92fSRobert Love * Functions for fc_functions_template 114042e9a92fSRobert Love */ 11413a3b42bfSRobert Love void fc_get_host_speed(struct Scsi_Host *); 11423a3b42bfSRobert Love void fc_get_host_port_state(struct Scsi_Host *); 11433a3b42bfSRobert Love void fc_set_rport_loss_tmo(struct fc_rport *, u32 timeout); 114442e9a92fSRobert Love struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *); 114542e9a92fSRobert Love 114642e9a92fSRobert Love #endif /* _LIBFC_H_ */ 1147