+++ /dev/null
-/*
- * Copyright (c) 2016, Avago Technologies
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- */
-
-#ifndef _NVME_FC_DRIVER_H
-#define _NVME_FC_DRIVER_H 1
-
-
-/*
- * ********************** LLDD FC-NVME Host API ********************
- *
- * For FC LLDD's that are the NVME Host role.
- *
- * ******************************************************************
- */
-
-
-
-/* FC Port role bitmask - can merge with FC Port Roles in fc transport */
-#define FC_PORT_ROLE_NVME_INITIATOR 0x10
-#define FC_PORT_ROLE_NVME_TARGET 0x20
-#define FC_PORT_ROLE_NVME_DISCOVERY 0x40
-
-
-/**
- * struct nvme_fc_port_info - port-specific ids and FC connection-specific
- * data element used during NVME Host role
- * registrations
- *
- * Static fields describing the port being registered:
- * @node_name: FC WWNN for the port
- * @port_name: FC WWPN for the port
- * @port_role: What NVME roles are supported (see FC_PORT_ROLE_xxx)
- * @dev_loss_tmo: maximum delay for reconnects to an association on
- * this device. Used only on a remoteport.
- *
- * Initialization values for dynamic port fields:
- * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must
- * be set to 0.
- */
-struct nvme_fc_port_info {
- u64 node_name;
- u64 port_name;
- u32 port_role;
- u32 port_id;
- u32 dev_loss_tmo;
-};
-
-
-/**
- * struct nvmefc_ls_req - Request structure passed from NVME-FC transport
- * to LLDD in order to perform a NVME FC-4 LS
- * request and obtain a response.
- *
- * Values set by the NVME-FC layer prior to calling the LLDD ls_req
- * entrypoint.
- * @rqstaddr: pointer to request buffer
- * @rqstdma: PCI DMA address of request buffer
- * @rqstlen: Length, in bytes, of request buffer
- * @rspaddr: pointer to response buffer
- * @rspdma: PCI DMA address of response buffer
- * @rsplen: Length, in bytes, of response buffer
- * @timeout: Maximum amount of time, in seconds, to wait for the LS response.
- * If timeout exceeded, LLDD to abort LS exchange and complete
- * LS request with error status.
- * @private: pointer to memory allocated alongside the ls request structure
- * that is specifically for the LLDD to use while processing the
- * request. The length of the buffer corresponds to the
- * lsrqst_priv_sz value specified in the nvme_fc_port_template
- * supplied by the LLDD.
- * @done: The callback routine the LLDD is to invoke upon completion of
- * the LS request. req argument is the pointer to the original LS
- * request structure. Status argument must be 0 upon success, a
- * negative errno on failure (example: -ENXIO).
- */
-struct nvmefc_ls_req {
- void *rqstaddr;
- dma_addr_t rqstdma;
- u32 rqstlen;
- void *rspaddr;
- dma_addr_t rspdma;
- u32 rsplen;
- u32 timeout;
-
- void *private;
-
- void (*done)(struct nvmefc_ls_req *req, int status);
-
-} __aligned(sizeof(u64)); /* alignment for other things alloc'd with */
-
-
-enum nvmefc_fcp_datadir {
- NVMEFC_FCP_NODATA, /* payload_length and sg_cnt will be zero */
- NVMEFC_FCP_WRITE,
- NVMEFC_FCP_READ,
-};
-
-
-/**
- * struct nvmefc_fcp_req - Request structure passed from NVME-FC transport
- * to LLDD in order to perform a NVME FCP IO operation.
- *
- * Values set by the NVME-FC layer prior to calling the LLDD fcp_io
- * entrypoint.
- * @cmdaddr: pointer to the FCP CMD IU buffer
- * @rspaddr: pointer to the FCP RSP IU buffer
- * @cmddma: PCI DMA address of the FCP CMD IU buffer
- * @rspdma: PCI DMA address of the FCP RSP IU buffer
- * @cmdlen: Length, in bytes, of the FCP CMD IU buffer
- * @rsplen: Length, in bytes, of the FCP RSP IU buffer
- * @payload_length: Length of DATA_IN or DATA_OUT payload data to transfer
- * @sg_table: scatter/gather structure for payload data
- * @first_sgl: memory for 1st scatter/gather list segment for payload data
- * @sg_cnt: number of elements in the scatter/gather list
- * @io_dir: direction of the FCP request (see NVMEFC_FCP_xxx)
- * @sqid: The nvme SQID the command is being issued on
- * @done: The callback routine the LLDD is to invoke upon completion of
- * the FCP operation. req argument is the pointer to the original
- * FCP IO operation.
- * @private: pointer to memory allocated alongside the FCP operation
- * request structure that is specifically for the LLDD to use
- * while processing the operation. The length of the buffer
- * corresponds to the fcprqst_priv_sz value specified in the
- * nvme_fc_port_template supplied by the LLDD.
- *
- * Values set by the LLDD indicating completion status of the FCP operation.
- * Must be set prior to calling the done() callback.
- * @transferred_length: amount of payload data, in bytes, that were
- * transferred. Should equal payload_length on success.
- * @rcv_rsplen: length, in bytes, of the FCP RSP IU received.
- * @status: Completion status of the FCP operation. must be 0 upon success,
- * negative errno value upon failure (ex: -EIO). Note: this is
- * NOT a reflection of the NVME CQE completion status. Only the
- * status of the FCP operation at the NVME-FC level.
- */
-struct nvmefc_fcp_req {
- void *cmdaddr;
- void *rspaddr;
- dma_addr_t cmddma;
- dma_addr_t rspdma;
- u16 cmdlen;
- u16 rsplen;
-
- u32 payload_length;
- struct sg_table sg_table;
- struct scatterlist *first_sgl;
- int sg_cnt;
- enum nvmefc_fcp_datadir io_dir;
-
- __le16 sqid;
-
- void (*done)(struct nvmefc_fcp_req *req);
-
- void *private;
-
- u32 transferred_length;
- u16 rcv_rsplen;
- u32 status;
-} __aligned(sizeof(u64)); /* alignment for other things alloc'd with */
-
-
-/*
- * Direct copy of fc_port_state enum. For later merging
- */
-enum nvme_fc_obj_state {
- FC_OBJSTATE_UNKNOWN,
- FC_OBJSTATE_NOTPRESENT,
- FC_OBJSTATE_ONLINE,
- FC_OBJSTATE_OFFLINE, /* User has taken Port Offline */
- FC_OBJSTATE_BLOCKED,
- FC_OBJSTATE_BYPASSED,
- FC_OBJSTATE_DIAGNOSTICS,
- FC_OBJSTATE_LINKDOWN,
- FC_OBJSTATE_ERROR,
- FC_OBJSTATE_LOOPBACK,
- FC_OBJSTATE_DELETED,
-};
-
-
-/**
- * struct nvme_fc_local_port - structure used between NVME-FC transport and
- * a LLDD to reference a local NVME host port.
- * Allocated/created by the nvme_fc_register_localport()
- * transport interface.
- *
- * Fields with static values for the port. Initialized by the
- * port_info struct supplied to the registration call.
- * @port_num: NVME-FC transport host port number
- * @port_role: NVME roles are supported on the port (see FC_PORT_ROLE_xxx)
- * @node_name: FC WWNN for the port
- * @port_name: FC WWPN for the port
- * @private: pointer to memory allocated alongside the local port
- * structure that is specifically for the LLDD to use.
- * The length of the buffer corresponds to the local_priv_sz
- * value specified in the nvme_fc_port_template supplied by
- * the LLDD.
- * @dev_loss_tmo: maximum delay for reconnects to an association on
- * this device. To modify, lldd must call
- * nvme_fc_set_remoteport_devloss().
- *
- * Fields with dynamic values. Values may change base on link state. LLDD
- * may reference fields directly to change them. Initialized by the
- * port_info struct supplied to the registration call.
- * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must
- * be set to 0.
- * @port_state: Operational state of the port.
- */
-struct nvme_fc_local_port {
- /* static/read-only fields */
- u32 port_num;
- u32 port_role;
- u64 node_name;
- u64 port_name;
-
- void *private;
-
- /* dynamic fields */
- u32 port_id;
- enum nvme_fc_obj_state port_state;
-} __aligned(sizeof(u64)); /* alignment for other things alloc'd with */
-
-
-/**
- * struct nvme_fc_remote_port - structure used between NVME-FC transport and
- * a LLDD to reference a remote NVME subsystem port.
- * Allocated/created by the nvme_fc_register_remoteport()
- * transport interface.
- *
- * Fields with static values for the port. Initialized by the
- * port_info struct supplied to the registration call.
- * @port_num: NVME-FC transport remote subsystem port number
- * @port_role: NVME roles are supported on the port (see FC_PORT_ROLE_xxx)
- * @node_name: FC WWNN for the port
- * @port_name: FC WWPN for the port
- * @localport: pointer to the NVME-FC local host port the subsystem is
- * connected to.
- * @private: pointer to memory allocated alongside the remote port
- * structure that is specifically for the LLDD to use.
- * The length of the buffer corresponds to the remote_priv_sz
- * value specified in the nvme_fc_port_template supplied by
- * the LLDD.
- *
- * Fields with dynamic values. Values may change base on link or login
- * state. LLDD may reference fields directly to change them. Initialized by
- * the port_info struct supplied to the registration call.
- * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must
- * be set to 0.
- * @port_state: Operational state of the remote port. Valid values are
- * ONLINE or UNKNOWN.
- */
-struct nvme_fc_remote_port {
- /* static fields */
- u32 port_num;
- u32 port_role;
- u64 node_name;
- u64 port_name;
- struct nvme_fc_local_port *localport;
- void *private;
- u32 dev_loss_tmo;
-
- /* dynamic fields */
- u32 port_id;
- enum nvme_fc_obj_state port_state;
-} __aligned(sizeof(u64)); /* alignment for other things alloc'd with */
-
-
-/**
- * struct nvme_fc_port_template - structure containing static entrypoints and
- * operational parameters for an LLDD that supports NVME host
- * behavior. Passed by reference in port registrations.
- * NVME-FC transport remembers template reference and may
- * access it during runtime operation.
- *
- * Host/Initiator Transport Entrypoints/Parameters:
- *
- * @localport_delete: The LLDD initiates deletion of a localport via
- * nvme_fc_deregister_localport(). However, the teardown is
- * asynchronous. This routine is called upon the completion of the
- * teardown to inform the LLDD that the localport has been deleted.
- * Entrypoint is Mandatory.
- *
- * @remoteport_delete: The LLDD initiates deletion of a remoteport via
- * nvme_fc_deregister_remoteport(). However, the teardown is
- * asynchronous. This routine is called upon the completion of the
- * teardown to inform the LLDD that the remoteport has been deleted.
- * Entrypoint is Mandatory.
- *
- * @create_queue: Upon creating a host<->controller association, queues are
- * created such that they can be affinitized to cpus/cores. This
- * callback into the LLDD to notify that a controller queue is being
- * created. The LLDD may choose to allocate an associated hw queue
- * or map it onto a shared hw queue. Upon return from the call, the
- * LLDD specifies a handle that will be given back to it for any
- * command that is posted to the controller queue. The handle can
- * be used by the LLDD to map quickly to the proper hw queue for
- * command execution. The mask of cpu's that will map to this queue
- * at the block-level is also passed in. The LLDD should use the
- * queue id and/or cpu masks to ensure proper affinitization of the
- * controller queue to the hw queue.
- * Entrypoint is Optional.
- *
- * @delete_queue: This is the inverse of the crete_queue. During
- * host<->controller association teardown, this routine is called
- * when a controller queue is being terminated. Any association with
- * a hw queue should be termined. If there is a unique hw queue, the
- * hw queue should be torn down.
- * Entrypoint is Optional.
- *
- * @poll_queue: Called to poll for the completion of an io on a blk queue.
- * Entrypoint is Optional.
- *
- * @ls_req: Called to issue a FC-NVME FC-4 LS service request.
- * The nvme_fc_ls_req structure will fully describe the buffers for
- * the request payload and where to place the response payload. The
- * LLDD is to allocate an exchange, issue the LS request, obtain the
- * LS response, and call the "done" routine specified in the request
- * structure (argument to done is the ls request structure itself).
- * Entrypoint is Mandatory.
- *
- * @fcp_io: called to issue a FC-NVME I/O request. The I/O may be for
- * an admin queue or an i/o queue. The nvmefc_fcp_req structure will
- * fully describe the io: the buffer containing the FC-NVME CMD IU
- * (which contains the SQE), the sg list for the payload if applicable,
- * and the buffer to place the FC-NVME RSP IU into. The LLDD will
- * complete the i/o, indicating the amount of data transferred or
- * any transport error, and call the "done" routine specified in the
- * request structure (argument to done is the fcp request structure
- * itself).
- * Entrypoint is Mandatory.
- *
- * @ls_abort: called to request the LLDD to abort the indicated ls request.
- * The call may return before the abort has completed. After aborting
- * the request, the LLDD must still call the ls request done routine
- * indicating an FC transport Aborted status.
- * Entrypoint is Mandatory.
- *
- * @fcp_abort: called to request the LLDD to abort the indicated fcp request.
- * The call may return before the abort has completed. After aborting
- * the request, the LLDD must still call the fcp request done routine
- * indicating an FC transport Aborted status.
- * Entrypoint is Mandatory.
- *
- * @max_hw_queues: indicates the maximum number of hw queues the LLDD
- * supports for cpu affinitization.
- * Value is Mandatory. Must be at least 1.
- *
- * @max_sgl_segments: indicates the maximum number of sgl segments supported
- * by the LLDD
- * Value is Mandatory. Must be at least 1. Recommend at least 256.
- *
- * @max_dif_sgl_segments: indicates the maximum number of sgl segments
- * supported by the LLDD for DIF operations.
- * Value is Mandatory. Must be at least 1. Recommend at least 256.
- *
- * @dma_boundary: indicates the dma address boundary where dma mappings
- * will be split across.
- * Value is Mandatory. Typical value is 0xFFFFFFFF to split across
- * 4Gig address boundarys
- *
- * @local_priv_sz: The LLDD sets this field to the amount of additional
- * memory that it would like fc nvme layer to allocate on the LLDD's
- * behalf whenever a localport is allocated. The additional memory
- * area solely for the of the LLDD and its location is specified by
- * the localport->private pointer.
- * Value is Mandatory. Allowed to be zero.
- *
- * @remote_priv_sz: The LLDD sets this field to the amount of additional
- * memory that it would like fc nvme layer to allocate on the LLDD's
- * behalf whenever a remoteport is allocated. The additional memory
- * area solely for the of the LLDD and its location is specified by
- * the remoteport->private pointer.
- * Value is Mandatory. Allowed to be zero.
- *
- * @lsrqst_priv_sz: The LLDD sets this field to the amount of additional
- * memory that it would like fc nvme layer to allocate on the LLDD's
- * behalf whenever a ls request structure is allocated. The additional
- * memory area solely for the of the LLDD and its location is
- * specified by the ls_request->private pointer.
- * Value is Mandatory. Allowed to be zero.
- *
- * @fcprqst_priv_sz: The LLDD sets this field to the amount of additional
- * memory that it would like fc nvme layer to allocate on the LLDD's
- * behalf whenever a fcp request structure is allocated. The additional
- * memory area solely for the of the LLDD and its location is
- * specified by the fcp_request->private pointer.
- * Value is Mandatory. Allowed to be zero.
- */
-struct nvme_fc_port_template {
- /* initiator-based functions */
- void (*localport_delete)(struct nvme_fc_local_port *);
- void (*remoteport_delete)(struct nvme_fc_remote_port *);
- int (*create_queue)(struct nvme_fc_local_port *,
- unsigned int qidx, u16 qsize,
- void **handle);
- void (*delete_queue)(struct nvme_fc_local_port *,
- unsigned int qidx, void *handle);
- void (*poll_queue)(struct nvme_fc_local_port *, void *handle);
- int (*ls_req)(struct nvme_fc_local_port *,
- struct nvme_fc_remote_port *,
- struct nvmefc_ls_req *);
- int (*fcp_io)(struct nvme_fc_local_port *,
- struct nvme_fc_remote_port *,
- void *hw_queue_handle,
- struct nvmefc_fcp_req *);
- void (*ls_abort)(struct nvme_fc_local_port *,
- struct nvme_fc_remote_port *,
- struct nvmefc_ls_req *);
- void (*fcp_abort)(struct nvme_fc_local_port *,
- struct nvme_fc_remote_port *,
- void *hw_queue_handle,
- struct nvmefc_fcp_req *);
-
- u32 max_hw_queues;
- u16 max_sgl_segments;
- u16 max_dif_sgl_segments;
- u64 dma_boundary;
-
- /* sizes of additional private data for data structures */
- u32 local_priv_sz;
- u32 remote_priv_sz;
- u32 lsrqst_priv_sz;
- u32 fcprqst_priv_sz;
-};
-
-
-/*
- * Initiator/Host functions
- */
-
-int nvme_fc_register_localport(struct nvme_fc_port_info *pinfo,
- struct nvme_fc_port_template *template,
- struct device *dev,
- struct nvme_fc_local_port **lport_p);
-
-int nvme_fc_unregister_localport(struct nvme_fc_local_port *localport);
-
-int nvme_fc_register_remoteport(struct nvme_fc_local_port *localport,
- struct nvme_fc_port_info *pinfo,
- struct nvme_fc_remote_port **rport_p);
-
-int nvme_fc_unregister_remoteport(struct nvme_fc_remote_port *remoteport);
-
-void nvme_fc_rescan_remoteport(struct nvme_fc_remote_port *remoteport);
-
-int nvme_fc_set_remoteport_devloss(struct nvme_fc_remote_port *remoteport,
- u32 dev_loss_tmo);
-
-
-/*
- * *************** LLDD FC-NVME Target/Subsystem API ***************
- *
- * For FC LLDD's that are the NVME Subsystem role
- *
- * ******************************************************************
- */
-
-/**
- * struct nvmet_fc_port_info - port-specific ids and FC connection-specific
- * data element used during NVME Subsystem role
- * registrations
- *
- * Static fields describing the port being registered:
- * @node_name: FC WWNN for the port
- * @port_name: FC WWPN for the port
- *
- * Initialization values for dynamic port fields:
- * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must
- * be set to 0.
- */
-struct nvmet_fc_port_info {
- u64 node_name;
- u64 port_name;
- u32 port_id;
-};
-
-
-/**
- * struct nvmefc_tgt_ls_req - Structure used between LLDD and NVMET-FC
- * layer to represent the exchange context for
- * a FC-NVME Link Service (LS).
- *
- * The structure is allocated by the LLDD whenever a LS Request is received
- * from the FC link. The address of the structure is passed to the nvmet-fc
- * layer via the nvmet_fc_rcv_ls_req() call. The address of the structure
- * will be passed back to the LLDD when the response is to be transmit.
- * The LLDD is to use the address to map back to the LLDD exchange structure
- * which maintains information such as the targetport the LS was received
- * on, the remote FC NVME initiator that sent the LS, and any FC exchange
- * context. Upon completion of the LS response transmit, the address of the
- * structure will be passed back to the LS rsp done() routine, allowing the
- * nvmet-fc layer to release dma resources. Upon completion of the done()
- * routine, no further access will be made by the nvmet-fc layer and the
- * LLDD can de-allocate the structure.
- *
- * Field initialization:
- * At the time of the nvmet_fc_rcv_ls_req() call, there is no content that
- * is valid in the structure.
- *
- * When the structure is used for the LLDD->xmt_ls_rsp() call, the nvmet-fc
- * layer will fully set the fields in order to specify the response
- * payload buffer and its length as well as the done routine to be called
- * upon compeletion of the transmit. The nvmet-fc layer will also set a
- * private pointer for its own use in the done routine.
- *
- * Values set by the NVMET-FC layer prior to calling the LLDD xmt_ls_rsp
- * entrypoint.
- * @rspbuf: pointer to the LS response buffer
- * @rspdma: PCI DMA address of the LS response buffer
- * @rsplen: Length, in bytes, of the LS response buffer
- * @done: The callback routine the LLDD is to invoke upon completion of
- * transmitting the LS response. req argument is the pointer to
- * the original ls request.
- * @nvmet_fc_private: pointer to an internal NVMET-FC layer structure used
- * as part of the NVMET-FC processing. The LLDD is not to access
- * this pointer.
- */
-struct nvmefc_tgt_ls_req {
- void *rspbuf;
- dma_addr_t rspdma;
- u16 rsplen;
-
- void (*done)(struct nvmefc_tgt_ls_req *req);
- void *nvmet_fc_private; /* LLDD is not to access !! */
-};
-
-/* Operations that NVME-FC layer may request the LLDD to perform for FCP */
-enum {
- NVMET_FCOP_READDATA = 1, /* xmt data to initiator */
- NVMET_FCOP_WRITEDATA = 2, /* xmt data from initiator */
- NVMET_FCOP_READDATA_RSP = 3, /* xmt data to initiator and send
- * rsp as well
- */
- NVMET_FCOP_RSP = 4, /* send rsp frame */
-};
-
-/**
- * struct nvmefc_tgt_fcp_req - Structure used between LLDD and NVMET-FC
- * layer to represent the exchange context and
- * the specific FC-NVME IU operation(s) to perform
- * for a FC-NVME FCP IO.
- *
- * Structure used between LLDD and nvmet-fc layer to represent the exchange
- * context for a FC-NVME FCP I/O operation (e.g. a nvme sqe, the sqe-related
- * memory transfers, and its assocated cqe transfer).
- *
- * The structure is allocated by the LLDD whenever a FCP CMD IU is received
- * from the FC link. The address of the structure is passed to the nvmet-fc
- * layer via the nvmet_fc_rcv_fcp_req() call. The address of the structure
- * will be passed back to the LLDD for the data operations and transmit of
- * the response. The LLDD is to use the address to map back to the LLDD
- * exchange structure which maintains information such as the targetport
- * the FCP I/O was received on, the remote FC NVME initiator that sent the
- * FCP I/O, and any FC exchange context. Upon completion of the FCP target
- * operation, the address of the structure will be passed back to the FCP
- * op done() routine, allowing the nvmet-fc layer to release dma resources.
- * Upon completion of the done() routine for either RSP or ABORT ops, no
- * further access will be made by the nvmet-fc layer and the LLDD can
- * de-allocate the structure.
- *
- * Field initialization:
- * At the time of the nvmet_fc_rcv_fcp_req() call, there is no content that
- * is valid in the structure.
- *
- * When the structure is used for an FCP target operation, the nvmet-fc
- * layer will fully set the fields in order to specify the scattergather
- * list, the transfer length, as well as the done routine to be called
- * upon compeletion of the operation. The nvmet-fc layer will also set a
- * private pointer for its own use in the done routine.
- *
- * Values set by the NVMET-FC layer prior to calling the LLDD fcp_op
- * entrypoint.
- * @op: Indicates the FCP IU operation to perform (see NVMET_FCOP_xxx)
- * @hwqid: Specifies the hw queue index (0..N-1, where N is the
- * max_hw_queues value from the LLD's nvmet_fc_target_template)
- * that the operation is to use.
- * @offset: Indicates the DATA_OUT/DATA_IN payload offset to be tranferred.
- * Field is only valid on WRITEDATA, READDATA, or READDATA_RSP ops.
- * @timeout: amount of time, in seconds, to wait for a response from the NVME
- * host. A value of 0 is an infinite wait.
- * Valid only for the following ops:
- * WRITEDATA: caps the wait for data reception
- * READDATA_RSP & RSP: caps wait for FCP_CONF reception (if used)
- * @transfer_length: the length, in bytes, of the DATA_OUT or DATA_IN payload
- * that is to be transferred.
- * Valid only for the WRITEDATA, READDATA, or READDATA_RSP ops.
- * @ba_rjt: Contains the BA_RJT payload that is to be transferred.
- * Valid only for the NVMET_FCOP_BA_RJT op.
- * @sg: Scatter/gather list for the DATA_OUT/DATA_IN payload data.
- * Valid only for the WRITEDATA, READDATA, or READDATA_RSP ops.
- * @sg_cnt: Number of valid entries in the scatter/gather list.
- * Valid only for the WRITEDATA, READDATA, or READDATA_RSP ops.
- * @rspaddr: pointer to the FCP RSP IU buffer to be transmit
- * Used by RSP and READDATA_RSP ops
- * @rspdma: PCI DMA address of the FCP RSP IU buffer
- * Used by RSP and READDATA_RSP ops
- * @rsplen: Length, in bytes, of the FCP RSP IU buffer
- * Used by RSP and READDATA_RSP ops
- * @done: The callback routine the LLDD is to invoke upon completion of
- * the operation. req argument is the pointer to the original
- * FCP subsystem op request.
- * @nvmet_fc_private: pointer to an internal NVMET-FC layer structure used
- * as part of the NVMET-FC processing. The LLDD is not to
- * reference this field.
- *
- * Values set by the LLDD indicating completion status of the FCP operation.
- * Must be set prior to calling the done() callback.
- * @transferred_length: amount of DATA_OUT payload data received by a
- * a WRITEDATA operation. If not a WRITEDATA operation, value must
- * be set to 0. Should equal transfer_length on success.
- * @fcp_error: status of the FCP operation. Must be 0 on success; on failure
- * must be a NVME_SC_FC_xxxx value.
- */
-struct nvmefc_tgt_fcp_req {
- u8 op;
- u16 hwqid;
- u32 offset;
- u32 timeout;
- u32 transfer_length;
- struct fc_ba_rjt ba_rjt;
- struct scatterlist *sg;
- int sg_cnt;
- void *rspaddr;
- dma_addr_t rspdma;
- u16 rsplen;
-
- void (*done)(struct nvmefc_tgt_fcp_req *);
-
- void *nvmet_fc_private; /* LLDD is not to access !! */
-
- u32 transferred_length;
- int fcp_error;
-};
-
-
-/* Target Features (Bit fields) LLDD supports */
-enum {
- NVMET_FCTGTFEAT_READDATA_RSP = (1 << 0),
- /* Bit 0: supports the NVMET_FCPOP_READDATA_RSP op, which
- * sends (the last) Read Data sequence followed by the RSP
- * sequence in one LLDD operation. Errors during Data
- * sequence transmit must not allow RSP sequence to be sent.
- */
- NVMET_FCTGTFEAT_CMD_IN_ISR = (1 << 1),
- /* Bit 2: When 0, the LLDD is calling the cmd rcv handler
- * in a non-isr context, allowing the transport to finish
- * op completion in the calling context. When 1, the LLDD
- * is calling the cmd rcv handler in an ISR context,
- * requiring the transport to transition to a workqueue
- * for op completion.
- */
- NVMET_FCTGTFEAT_OPDONE_IN_ISR = (1 << 2),
- /* Bit 3: When 0, the LLDD is calling the op done handler
- * in a non-isr context, allowing the transport to finish
- * op completion in the calling context. When 1, the LLDD
- * is calling the op done handler in an ISR context,
- * requiring the transport to transition to a workqueue
- * for op completion.
- */
-};
-
-
-/**
- * struct nvmet_fc_target_port - structure used between NVME-FC transport and
- * a LLDD to reference a local NVME subsystem port.
- * Allocated/created by the nvme_fc_register_targetport()
- * transport interface.
- *
- * Fields with static values for the port. Initialized by the
- * port_info struct supplied to the registration call.
- * @port_num: NVME-FC transport subsytem port number
- * @node_name: FC WWNN for the port
- * @port_name: FC WWPN for the port
- * @private: pointer to memory allocated alongside the local port
- * structure that is specifically for the LLDD to use.
- * The length of the buffer corresponds to the target_priv_sz
- * value specified in the nvme_fc_target_template supplied by
- * the LLDD.
- *
- * Fields with dynamic values. Values may change base on link state. LLDD
- * may reference fields directly to change them. Initialized by the
- * port_info struct supplied to the registration call.
- * @port_id: FC N_Port_ID currently assigned the port. Upper 8 bits must
- * be set to 0.
- * @port_state: Operational state of the port.
- */
-struct nvmet_fc_target_port {
- /* static/read-only fields */
- u32 port_num;
- u64 node_name;
- u64 port_name;
-
- void *private;
-
- /* dynamic fields */
- u32 port_id;
- enum nvme_fc_obj_state port_state;
-} __aligned(sizeof(u64)); /* alignment for other things alloc'd with */
-
-
-/**
- * struct nvmet_fc_target_template - structure containing static entrypoints
- * and operational parameters for an LLDD that supports NVME
- * subsystem behavior. Passed by reference in port
- * registrations. NVME-FC transport remembers template
- * reference and may access it during runtime operation.
- *
- * Subsystem/Target Transport Entrypoints/Parameters:
- *
- * @targetport_delete: The LLDD initiates deletion of a targetport via
- * nvmet_fc_unregister_targetport(). However, the teardown is
- * asynchronous. This routine is called upon the completion of the
- * teardown to inform the LLDD that the targetport has been deleted.
- * Entrypoint is Mandatory.
- *
- * @xmt_ls_rsp: Called to transmit the response to a FC-NVME FC-4 LS service.
- * The nvmefc_tgt_ls_req structure is the same LLDD-supplied exchange
- * structure specified in the nvmet_fc_rcv_ls_req() call made when
- * the LS request was received. The structure will fully describe
- * the buffers for the response payload and the dma address of the
- * payload. The LLDD is to transmit the response (or return a non-zero
- * errno status), and upon completion of the transmit, call the
- * "done" routine specified in the nvmefc_tgt_ls_req structure
- * (argument to done is the ls reqwuest structure itself).
- * After calling the done routine, the LLDD shall consider the
- * LS handling complete and the nvmefc_tgt_ls_req structure may
- * be freed/released.
- * Entrypoint is Mandatory.
- *
- * @fcp_op: Called to perform a data transfer or transmit a response.
- * The nvmefc_tgt_fcp_req structure is the same LLDD-supplied
- * exchange structure specified in the nvmet_fc_rcv_fcp_req() call
- * made when the FCP CMD IU was received. The op field in the
- * structure shall indicate the operation for the LLDD to perform
- * relative to the io.
- * NVMET_FCOP_READDATA operation: the LLDD is to send the
- * payload data (described by sglist) to the host in 1 or
- * more FC sequences (preferrably 1). Note: the fc-nvme layer
- * may call the READDATA operation multiple times for longer
- * payloads.
- * NVMET_FCOP_WRITEDATA operation: the LLDD is to receive the
- * payload data (described by sglist) from the host via 1 or
- * more FC sequences (preferrably 1). The LLDD is to generate
- * the XFER_RDY IU(s) corresponding to the data being requested.
- * Note: the FC-NVME layer may call the WRITEDATA operation
- * multiple times for longer payloads.
- * NVMET_FCOP_READDATA_RSP operation: the LLDD is to send the
- * payload data (described by sglist) to the host in 1 or
- * more FC sequences (preferrably 1). If an error occurs during
- * payload data transmission, the LLDD is to set the
- * nvmefc_tgt_fcp_req fcp_error and transferred_length field, then
- * consider the operation complete. On error, the LLDD is to not
- * transmit the FCP_RSP iu. If all payload data is transferred
- * successfully, the LLDD is to update the nvmefc_tgt_fcp_req
- * transferred_length field and may subsequently transmit the
- * FCP_RSP iu payload (described by rspbuf, rspdma, rsplen).
- * If FCP_CONF is supported, the LLDD is to await FCP_CONF
- * reception to confirm the RSP reception by the host. The LLDD
- * may retramsit the FCP_RSP iu if necessary per FC-NVME. Upon
- * transmission of the FCP_RSP iu if FCP_CONF is not supported,
- * or upon success/failure of FCP_CONF if it is supported, the
- * LLDD is to set the nvmefc_tgt_fcp_req fcp_error field and
- * consider the operation complete.
- * NVMET_FCOP_RSP: the LLDD is to transmit the FCP_RSP iu payload
- * (described by rspbuf, rspdma, rsplen). If FCP_CONF is
- * supported, the LLDD is to await FCP_CONF reception to confirm
- * the RSP reception by the host. The LLDD may retramsit the
- * FCP_RSP iu if FCP_CONF is not received per FC-NVME. Upon
- * transmission of the FCP_RSP iu if FCP_CONF is not supported,
- * or upon success/failure of FCP_CONF if it is supported, the
- * LLDD is to set the nvmefc_tgt_fcp_req fcp_error field and
- * consider the operation complete.
- * Upon completing the indicated operation, the LLDD is to set the
- * status fields for the operation (tranferred_length and fcp_error
- * status) in the request, then call the "done" routine
- * indicated in the fcp request. After the operation completes,
- * regardless of whether the FCP_RSP iu was successfully transmit,
- * the LLDD-supplied exchange structure must remain valid until the
- * transport calls the fcp_req_release() callback to return ownership
- * of the exchange structure back to the LLDD so that it may be used
- * for another fcp command.
- * Note: when calling the done routine for READDATA or WRITEDATA
- * operations, the fc-nvme layer may immediate convert, in the same
- * thread and before returning to the LLDD, the fcp operation to
- * the next operation for the fcp io and call the LLDDs fcp_op
- * call again. If fields in the fcp request are to be accessed post
- * the done call, the LLDD should save their values prior to calling
- * the done routine, and inspect the save values after the done
- * routine.
- * Returns 0 on success, -<errno> on failure (Ex: -EIO)
- * Entrypoint is Mandatory.
- *
- * @fcp_abort: Called by the transport to abort an active command.
- * The command may be in-between operations (nothing active in LLDD)
- * or may have an active WRITEDATA operation pending. The LLDD is to
- * initiate the ABTS process for the command and return from the
- * callback. The ABTS does not need to be complete on the command.
- * The fcp_abort callback inherently cannot fail. After the
- * fcp_abort() callback completes, the transport will wait for any
- * outstanding operation (if there was one) to complete, then will
- * call the fcp_req_release() callback to return the command's
- * exchange context back to the LLDD.
- * Entrypoint is Mandatory.
- *
- * @fcp_req_release: Called by the transport to return a nvmefc_tgt_fcp_req
- * to the LLDD after all operations on the fcp operation are complete.
- * This may be due to the command completing or upon completion of
- * abort cleanup.
- * Entrypoint is Mandatory.
- *
- * @defer_rcv: Called by the transport to signal the LLLD that it has
- * begun processing of a previously received NVME CMD IU. The LLDD
- * is now free to re-use the rcv buffer associated with the
- * nvmefc_tgt_fcp_req.
- * Entrypoint is Optional.
- *
- * @max_hw_queues: indicates the maximum number of hw queues the LLDD
- * supports for cpu affinitization.
- * Value is Mandatory. Must be at least 1.
- *
- * @max_sgl_segments: indicates the maximum number of sgl segments supported
- * by the LLDD
- * Value is Mandatory. Must be at least 1. Recommend at least 256.
- *
- * @max_dif_sgl_segments: indicates the maximum number of sgl segments
- * supported by the LLDD for DIF operations.
- * Value is Mandatory. Must be at least 1. Recommend at least 256.
- *
- * @dma_boundary: indicates the dma address boundary where dma mappings
- * will be split across.
- * Value is Mandatory. Typical value is 0xFFFFFFFF to split across
- * 4Gig address boundarys
- *
- * @target_features: The LLDD sets bits in this field to correspond to
- * optional features that are supported by the LLDD.
- * Refer to the NVMET_FCTGTFEAT_xxx values.
- * Value is Mandatory. Allowed to be zero.
- *
- * @target_priv_sz: The LLDD sets this field to the amount of additional
- * memory that it would like fc nvme layer to allocate on the LLDD's
- * behalf whenever a targetport is allocated. The additional memory
- * area solely for the of the LLDD and its location is specified by
- * the targetport->private pointer.
- * Value is Mandatory. Allowed to be zero.
- */
-struct nvmet_fc_target_template {
- void (*targetport_delete)(struct nvmet_fc_target_port *tgtport);
- int (*xmt_ls_rsp)(struct nvmet_fc_target_port *tgtport,
- struct nvmefc_tgt_ls_req *tls_req);
- int (*fcp_op)(struct nvmet_fc_target_port *tgtport,
- struct nvmefc_tgt_fcp_req *fcpreq);
- void (*fcp_abort)(struct nvmet_fc_target_port *tgtport,
- struct nvmefc_tgt_fcp_req *fcpreq);
- void (*fcp_req_release)(struct nvmet_fc_target_port *tgtport,
- struct nvmefc_tgt_fcp_req *fcpreq);
- void (*defer_rcv)(struct nvmet_fc_target_port *tgtport,
- struct nvmefc_tgt_fcp_req *fcpreq);
-
- u32 max_hw_queues;
- u16 max_sgl_segments;
- u16 max_dif_sgl_segments;
- u64 dma_boundary;
-
- u32 target_features;
-
- u32 target_priv_sz;
-};
-
-
-int nvmet_fc_register_targetport(struct nvmet_fc_port_info *portinfo,
- struct nvmet_fc_target_template *template,
- struct device *dev,
- struct nvmet_fc_target_port **tgtport_p);
-
-int nvmet_fc_unregister_targetport(struct nvmet_fc_target_port *tgtport);
-
-int nvmet_fc_rcv_ls_req(struct nvmet_fc_target_port *tgtport,
- struct nvmefc_tgt_ls_req *lsreq,
- void *lsreqbuf, u32 lsreqbuf_len);
-
-int nvmet_fc_rcv_fcp_req(struct nvmet_fc_target_port *tgtport,
- struct nvmefc_tgt_fcp_req *fcpreq,
- void *cmdiubuf, u32 cmdiubuf_len);
-
-void nvmet_fc_rcv_fcp_abort(struct nvmet_fc_target_port *tgtport,
- struct nvmefc_tgt_fcp_req *fcpreq);
-
-#endif /* _NVME_FC_DRIVER_H */
+++ /dev/null
-/*
- * Copyright (c) 2016 Avago Technologies. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful.
- * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO
- * THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID.
- * See the GNU General Public License for more details, a copy of which
- * can be found in the file COPYING included with this package
- *
- */
-
-/*
- * This file contains definitions relative to FC-NVME r1.14 (16-020vB).
- * The fcnvme_lsdesc_cr_assoc_cmd struct reflects expected r1.16 content.
- */
-
-#ifndef _NVME_FC_H
-#define _NVME_FC_H 1
-
-
-#define NVME_CMD_SCSI_ID 0xFD
-#define NVME_CMD_FC_ID FC_TYPE_NVME
-
-/* FC-NVME Cmd IU Flags */
-#define FCNVME_CMD_FLAGS_DIRMASK 0x03
-#define FCNVME_CMD_FLAGS_WRITE 0x01
-#define FCNVME_CMD_FLAGS_READ 0x02
-
-struct nvme_fc_cmd_iu {
- __u8 scsi_id;
- __u8 fc_id;
- __be16 iu_len;
- __u8 rsvd4[3];
- __u8 flags;
- __be64 connection_id;
- __be32 csn;
- __be32 data_len;
- struct nvme_command sqe;
- __be32 rsvd88[2];
-};
-
-#define NVME_FC_SIZEOF_ZEROS_RSP 12
-
-enum {
- FCNVME_SC_SUCCESS = 0,
- FCNVME_SC_INVALID_FIELD = 1,
- FCNVME_SC_INVALID_CONNID = 2,
-};
-
-struct nvme_fc_ersp_iu {
- __u8 status_code;
- __u8 rsvd1;
- __be16 iu_len;
- __be32 rsn;
- __be32 xfrd_len;
- __be32 rsvd12;
- struct nvme_completion cqe;
- /* for now - no additional payload */
-};
-
-
-/* FC-NVME Link Services */
-enum {
- FCNVME_LS_RSVD = 0,
- FCNVME_LS_RJT = 1,
- FCNVME_LS_ACC = 2,
- FCNVME_LS_CREATE_ASSOCIATION = 3,
- FCNVME_LS_CREATE_CONNECTION = 4,
- FCNVME_LS_DISCONNECT = 5,
-};
-
-/* FC-NVME Link Service Descriptors */
-enum {
- FCNVME_LSDESC_RSVD = 0x0,
- FCNVME_LSDESC_RQST = 0x1,
- FCNVME_LSDESC_RJT = 0x2,
- FCNVME_LSDESC_CREATE_ASSOC_CMD = 0x3,
- FCNVME_LSDESC_CREATE_CONN_CMD = 0x4,
- FCNVME_LSDESC_DISCONN_CMD = 0x5,
- FCNVME_LSDESC_CONN_ID = 0x6,
- FCNVME_LSDESC_ASSOC_ID = 0x7,
-};
-
-
-/* ********** start of Link Service Descriptors ********** */
-
-
-/*
- * fills in length of a descriptor. Struture minus descriptor header
- */
-static inline __be32 fcnvme_lsdesc_len(size_t sz)
-{
- return cpu_to_be32(sz - (2 * sizeof(u32)));
-}
-
-struct fcnvme_ls_rqst_w0 {
- u8 ls_cmd; /* FCNVME_LS_xxx */
- u8 zeros[3];
-};
-
-/* FCNVME_LSDESC_RQST */
-struct fcnvme_lsdesc_rqst {
- __be32 desc_tag; /* FCNVME_LSDESC_xxx */
- __be32 desc_len;
- struct fcnvme_ls_rqst_w0 w0;
- __be32 rsvd12;
-};
-
-/* FC-NVME LS RJT reason_code values */
-enum fcnvme_ls_rjt_reason {
- FCNVME_RJT_RC_NONE = 0,
- /* no reason - not to be sent */
-
- FCNVME_RJT_RC_INVAL = 0x01,
- /* invalid NVMe_LS command code */
-
- FCNVME_RJT_RC_LOGIC = 0x03,
- /* logical error */
-
- FCNVME_RJT_RC_UNAB = 0x09,
- /* unable to perform command request */
-
- FCNVME_RJT_RC_UNSUP = 0x0b,
- /* command not supported */
-
- FCNVME_RJT_RC_INPROG = 0x0e,
- /* command already in progress */
-
- FCNVME_RJT_RC_INV_ASSOC = 0x40,
- /* Invalid Association ID*/
-
- FCNVME_RJT_RC_INV_CONN = 0x41,
- /* Invalid Connection ID*/
-
- FCNVME_RJT_RC_VENDOR = 0xff,
- /* vendor specific error */
-};
-
-/* FC-NVME LS RJT reason_explanation values */
-enum fcnvme_ls_rjt_explan {
- FCNVME_RJT_EXP_NONE = 0x00,
- /* No additional explanation */
-
- FCNVME_RJT_EXP_OXID_RXID = 0x17,
- /* invalid OX_ID-RX_ID combination */
-
- FCNVME_RJT_EXP_INSUF_RES = 0x29,
- /* insufficient resources */
-
- FCNVME_RJT_EXP_UNAB_DATA = 0x2a,
- /* unable to supply requested data */
-
- FCNVME_RJT_EXP_INV_LEN = 0x2d,
- /* Invalid payload length */
-};
-
-/* FCNVME_LSDESC_RJT */
-struct fcnvme_lsdesc_rjt {
- __be32 desc_tag; /* FCNVME_LSDESC_xxx */
- __be32 desc_len;
- u8 rsvd8;
-
- /*
- * Reject reason and explanaction codes are generic
- * to ELs's from LS-3.
- */
- u8 reason_code; /* fcnvme_ls_rjt_reason */
- u8 reason_explanation; /* fcnvme_ls_rjt_explan */
-
- u8 vendor;
- __be32 rsvd12;
-};
-
-
-#define FCNVME_ASSOC_HOSTNQN_LEN 256
-#define FCNVME_ASSOC_SUBNQN_LEN 256
-
-/* FCNVME_LSDESC_CREATE_ASSOC_CMD */
-struct fcnvme_lsdesc_cr_assoc_cmd {
- __be32 desc_tag; /* FCNVME_LSDESC_xxx */
- __be32 desc_len;
- __be16 ersp_ratio;
- __be16 rsvd10;
- __be32 rsvd12[9];
- __be16 cntlid;
- __be16 sqsize;
- __be32 rsvd52;
- uuid_t hostid;
- u8 hostnqn[FCNVME_ASSOC_HOSTNQN_LEN];
- u8 subnqn[FCNVME_ASSOC_SUBNQN_LEN];
- __be32 rsvd584[108]; /* pad to 1016 bytes,
- * which makes overall LS rqst
- * payload 1024 bytes
- */
-};
-
-#define FCNVME_LSDESC_CRA_CMD_DESC_MINLEN \
- offsetof(struct fcnvme_lsdesc_cr_assoc_cmd, rsvd584)
-
-#define FCNVME_LSDESC_CRA_CMD_DESC_MIN_DESCLEN \
- (FCNVME_LSDESC_CRA_CMD_DESC_MINLEN - \
- offsetof(struct fcnvme_lsdesc_cr_assoc_cmd, ersp_ratio))
-
-
-
-/* FCNVME_LSDESC_CREATE_CONN_CMD */
-struct fcnvme_lsdesc_cr_conn_cmd {
- __be32 desc_tag; /* FCNVME_LSDESC_xxx */
- __be32 desc_len;
- __be16 ersp_ratio;
- __be16 rsvd10;
- __be32 rsvd12[9];
- __be16 qid;
- __be16 sqsize;
- __be32 rsvd52;
-};
-
-/* Disconnect Scope Values */
-enum {
- FCNVME_DISCONN_ASSOCIATION = 0,
- FCNVME_DISCONN_CONNECTION = 1,
-};
-
-/* FCNVME_LSDESC_DISCONN_CMD */
-struct fcnvme_lsdesc_disconn_cmd {
- __be32 desc_tag; /* FCNVME_LSDESC_xxx */
- __be32 desc_len;
- u8 rsvd8[3];
- /* note: scope is really a 1 bit field */
- u8 scope; /* FCNVME_DISCONN_xxx */
- __be32 rsvd12;
- __be64 id;
-};
-
-/* FCNVME_LSDESC_CONN_ID */
-struct fcnvme_lsdesc_conn_id {
- __be32 desc_tag; /* FCNVME_LSDESC_xxx */
- __be32 desc_len;
- __be64 connection_id;
-};
-
-/* FCNVME_LSDESC_ASSOC_ID */
-struct fcnvme_lsdesc_assoc_id {
- __be32 desc_tag; /* FCNVME_LSDESC_xxx */
- __be32 desc_len;
- __be64 association_id;
-};
-
-/* r_ctl values */
-enum {
- FCNVME_RS_RCTL_DATA = 1,
- FCNVME_RS_RCTL_XFER_RDY = 5,
- FCNVME_RS_RCTL_RSP = 8,
-};
-
-
-/* ********** start of Link Services ********** */
-
-
-/* FCNVME_LS_RJT */
-struct fcnvme_ls_rjt {
- struct fcnvme_ls_rqst_w0 w0;
- __be32 desc_list_len;
- struct fcnvme_lsdesc_rqst rqst;
- struct fcnvme_lsdesc_rjt rjt;
-};
-
-/* FCNVME_LS_ACC */
-struct fcnvme_ls_acc_hdr {
- struct fcnvme_ls_rqst_w0 w0;
- __be32 desc_list_len;
- struct fcnvme_lsdesc_rqst rqst;
- /* Followed by cmd-specific ACC descriptors, see next definitions */
-};
-
-/* FCNVME_LS_CREATE_ASSOCIATION */
-struct fcnvme_ls_cr_assoc_rqst {
- struct fcnvme_ls_rqst_w0 w0;
- __be32 desc_list_len;
- struct fcnvme_lsdesc_cr_assoc_cmd assoc_cmd;
-};
-
-#define FCNVME_LSDESC_CRA_RQST_MINLEN \
- (offsetof(struct fcnvme_ls_cr_assoc_rqst, assoc_cmd) + \
- FCNVME_LSDESC_CRA_CMD_DESC_MINLEN)
-
-#define FCNVME_LSDESC_CRA_RQST_MIN_LISTLEN \
- FCNVME_LSDESC_CRA_CMD_DESC_MINLEN
-
-
-struct fcnvme_ls_cr_assoc_acc {
- struct fcnvme_ls_acc_hdr hdr;
- struct fcnvme_lsdesc_assoc_id associd;
- struct fcnvme_lsdesc_conn_id connectid;
-};
-
-
-/* FCNVME_LS_CREATE_CONNECTION */
-struct fcnvme_ls_cr_conn_rqst {
- struct fcnvme_ls_rqst_w0 w0;
- __be32 desc_list_len;
- struct fcnvme_lsdesc_assoc_id associd;
- struct fcnvme_lsdesc_cr_conn_cmd connect_cmd;
-};
-
-struct fcnvme_ls_cr_conn_acc {
- struct fcnvme_ls_acc_hdr hdr;
- struct fcnvme_lsdesc_conn_id connectid;
-};
-
-/* FCNVME_LS_DISCONNECT */
-struct fcnvme_ls_disconnect_rqst {
- struct fcnvme_ls_rqst_w0 w0;
- __be32 desc_list_len;
- struct fcnvme_lsdesc_assoc_id associd;
- struct fcnvme_lsdesc_disconn_cmd discon_cmd;
-};
-
-struct fcnvme_ls_disconnect_acc {
- struct fcnvme_ls_acc_hdr hdr;
-};
-
-
-/*
- * Yet to be defined in FC-NVME:
- */
-#define NVME_FC_CONNECT_TIMEOUT_SEC 2 /* 2 seconds */
-#define NVME_FC_LS_TIMEOUT_SEC 2 /* 2 seconds */
-#define NVME_FC_TGTOP_TIMEOUT_SEC 2 /* 2 seconds */
-
-/*
- * TRADDR string must be of form "nn-<16hexdigits>:pn-<16hexdigits>"
- * the string is allowed to be specified with or without a "0x" prefix
- * infront of the <16hexdigits>. Without is considered the "min" string
- * and with is considered the "max" string. The hexdigits may be upper
- * or lower case.
- */
-#define NVME_FC_TRADDR_NNLEN 3 /* "?n-" */
-#define NVME_FC_TRADDR_OXNNLEN 5 /* "?n-0x" */
-#define NVME_FC_TRADDR_HEXNAMELEN 16
-#define NVME_FC_TRADDR_MINLENGTH \
- (2 * (NVME_FC_TRADDR_NNLEN + NVME_FC_TRADDR_HEXNAMELEN) + 1)
-#define NVME_FC_TRADDR_MAXLENGTH \
- (2 * (NVME_FC_TRADDR_OXNNLEN + NVME_FC_TRADDR_HEXNAMELEN) + 1)
-#define NVME_FC_TRADDR_MIN_PN_OFFSET \
- (NVME_FC_TRADDR_NNLEN + NVME_FC_TRADDR_HEXNAMELEN + 1)
-#define NVME_FC_TRADDR_MAX_PN_OFFSET \
- (NVME_FC_TRADDR_OXNNLEN + NVME_FC_TRADDR_HEXNAMELEN + 1)
-
-
-#endif /* _NVME_FC_H */
projects / compat-rdma / compat.git / commitdiff