csio_rnode.h
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/*
* This file is part of the Chelsio FCoE driver for Linux.
*
* Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __CSIO_RNODE_H__
#define __CSIO_RNODE_H__
#include "csio_defs.h"
/* State machine evets */
enum csio_rn_ev {
CSIO_RNFE_NONE = (uint32_t)0, /* None */
CSIO_RNFE_LOGGED_IN, /* [N/F]Port login
* complete.
*/
CSIO_RNFE_PRLI_DONE, /* PRLI completed */
CSIO_RNFE_PLOGI_RECV, /* Received PLOGI */
CSIO_RNFE_PRLI_RECV, /* Received PLOGI */
CSIO_RNFE_LOGO_RECV, /* Received LOGO */
CSIO_RNFE_PRLO_RECV, /* Received PRLO */
CSIO_RNFE_DOWN, /* Rnode is down */
CSIO_RNFE_CLOSE, /* Close rnode */
CSIO_RNFE_NAME_MISSING, /* Rnode name missing
* in name server.
*/
CSIO_RNFE_MAX_EVENT,
};
/* rnode stats */
struct csio_rnode_stats {
uint32_t n_err; /* error */
uint32_t n_err_inval; /* invalid parameter */
uint32_t n_err_nomem; /* error nomem */
uint32_t n_evt_unexp; /* unexpected event */
uint32_t n_evt_drop; /* unexpected event */
uint32_t n_evt_fw[PROTO_ERR_IMPL_LOGO + 1]; /* fw events */
enum csio_rn_ev n_evt_sm[CSIO_RNFE_MAX_EVENT]; /* State m/c events */
uint32_t n_lun_rst; /* Number of resets of
* of LUNs under this
* target
*/
uint32_t n_lun_rst_fail; /* Number of LUN reset
* failures.
*/
uint32_t n_tgt_rst; /* Number of target resets */
uint32_t n_tgt_rst_fail; /* Number of target reset
* failures.
*/
};
/* Defines for rnode role */
#define CSIO_RNFR_INITIATOR 0x1
#define CSIO_RNFR_TARGET 0x2
#define CSIO_RNFR_FABRIC 0x4
#define CSIO_RNFR_NS 0x8
#define CSIO_RNFR_NPORT 0x10
struct csio_rnode {
struct csio_sm sm; /* State machine -
* should be the
* 1st member
*/
struct csio_lnode *lnp; /* Pointer to owning
* Lnode */
uint32_t flowid; /* Firmware ID */
struct list_head host_cmpl_q; /* SCSI IOs
* pending to completed
* to Mid-layer.
*/
/* FC identifiers for remote node */
uint32_t nport_id;
uint16_t fcp_flags; /* FCP Flags */
uint8_t cur_evt; /* Current event */
uint8_t prev_evt; /* Previous event */
uint32_t role; /* Fabric/Target/
* Initiator/NS
*/
struct fcoe_rdev_entry *rdev_entry; /* Rdev entry */
struct csio_service_parms rn_sparm;
/* FC transport attributes */
struct fc_rport *rport; /* FC transport rport */
uint32_t supp_classes; /* Supported FC classes */
uint32_t maxframe_size; /* Max Frame size */
uint32_t scsi_id; /* Transport given SCSI id */
struct csio_rnode_stats stats; /* Common rnode stats */
};
#define csio_rn_flowid(rn) ((rn)->flowid)
#define csio_rn_wwpn(rn) ((rn)->rn_sparm.wwpn)
#define csio_rn_wwnn(rn) ((rn)->rn_sparm.wwnn)
#define csio_rnode_to_lnode(rn) ((rn)->lnp)
int csio_is_rnode_ready(struct csio_rnode *rn);
void csio_rnode_state_to_str(struct csio_rnode *rn, int8_t *str);
struct csio_rnode *csio_rnode_lookup_portid(struct csio_lnode *, uint32_t);
struct csio_rnode *csio_confirm_rnode(struct csio_lnode *,
uint32_t, struct fcoe_rdev_entry *);
void csio_rnode_fwevt_handler(struct csio_rnode *rn, uint8_t fwevt);
void csio_put_rnode(struct csio_lnode *ln, struct csio_rnode *rn);
void csio_reg_rnode(struct csio_rnode *);
void csio_unreg_rnode(struct csio_rnode *);
void csio_rnode_devloss_handler(struct csio_rnode *);
#endif /* ifndef __CSIO_RNODE_H__ */