cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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csio_rnode.h (4809B)

      1/*
      2 * This file is part of the Chelsio FCoE driver for Linux.
      3 *
      4 * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
      5 *
      6 * This software is available to you under a choice of one of two
      7 * licenses.  You may choose to be licensed under the terms of the GNU
      8 * General Public License (GPL) Version 2, available from the file
      9 * COPYING in the main directory of this source tree, or the
     10 * OpenIB.org BSD license below:
     11 *
     12 *     Redistribution and use in source and binary forms, with or
     13 *     without modification, are permitted provided that the following
     14 *     conditions are met:
     15 *
     16 *      - Redistributions of source code must retain the above
     17 *        copyright notice, this list of conditions and the following
     18 *        disclaimer.
     19 *
     20 *      - Redistributions in binary form must reproduce the above
     21 *        copyright notice, this list of conditions and the following
     22 *        disclaimer in the documentation and/or other materials
     23 *        provided with the distribution.
     24 *
     25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     32 * SOFTWARE.
     33 */
     34
     35#ifndef __CSIO_RNODE_H__
     36#define __CSIO_RNODE_H__
     37
     38#include "csio_defs.h"
     39
     40/* State machine evets */
     41enum csio_rn_ev {
     42	CSIO_RNFE_NONE = (uint32_t)0,			/* None */
     43	CSIO_RNFE_LOGGED_IN,				/* [N/F]Port login
     44							 * complete.
     45							 */
     46	CSIO_RNFE_PRLI_DONE,				/* PRLI completed */
     47	CSIO_RNFE_PLOGI_RECV,				/* Received PLOGI */
     48	CSIO_RNFE_PRLI_RECV,				/* Received PLOGI */
     49	CSIO_RNFE_LOGO_RECV,				/* Received LOGO */
     50	CSIO_RNFE_PRLO_RECV,				/* Received PRLO */
     51	CSIO_RNFE_DOWN,					/* Rnode is down */
     52	CSIO_RNFE_CLOSE,				/* Close rnode */
     53	CSIO_RNFE_NAME_MISSING,				/* Rnode name missing
     54							 * in name server.
     55							 */
     56	CSIO_RNFE_MAX_EVENT,
     57};
     58
     59/* rnode stats */
     60struct csio_rnode_stats {
     61	uint32_t	n_err;		/* error */
     62	uint32_t	n_err_inval;	/* invalid parameter */
     63	uint32_t	n_err_nomem;	/* error nomem */
     64	uint32_t	n_evt_unexp;	/* unexpected event */
     65	uint32_t	n_evt_drop;	/* unexpected event */
     66	uint32_t	n_evt_fw[PROTO_ERR_IMPL_LOGO + 1];	/* fw events */
     67	enum csio_rn_ev	n_evt_sm[CSIO_RNFE_MAX_EVENT];	/* State m/c events */
     68	uint32_t	n_lun_rst;	/* Number of resets of
     69					 * of LUNs under this
     70					 * target
     71					 */
     72	uint32_t	n_lun_rst_fail;	/* Number of LUN reset
     73					 * failures.
     74					 */
     75	uint32_t	n_tgt_rst;	/* Number of target resets */
     76	uint32_t	n_tgt_rst_fail;	/* Number of target reset
     77					 * failures.
     78					 */
     79};
     80
     81/* Defines for rnode role */
     82#define	CSIO_RNFR_INITIATOR	0x1
     83#define	CSIO_RNFR_TARGET	0x2
     84#define CSIO_RNFR_FABRIC	0x4
     85#define	CSIO_RNFR_NS		0x8
     86#define CSIO_RNFR_NPORT		0x10
     87
     88struct csio_rnode {
     89	struct csio_sm		sm;			/* State machine -
     90							 * should be the
     91							 * 1st member
     92							 */
     93	struct csio_lnode	*lnp;			/* Pointer to owning
     94							 * Lnode */
     95	uint32_t		flowid;			/* Firmware ID */
     96	struct list_head	host_cmpl_q;		/* SCSI IOs
     97							 * pending to completed
     98							 * to Mid-layer.
     99							 */
    100	/* FC identifiers for remote node */
    101	uint32_t		nport_id;
    102	uint16_t		fcp_flags;		/* FCP Flags */
    103	uint8_t			cur_evt;		/* Current event */
    104	uint8_t			prev_evt;		/* Previous event */
    105	uint32_t		role;			/* Fabric/Target/
    106							 * Initiator/NS
    107							 */
    108	struct fcoe_rdev_entry		*rdev_entry;	/* Rdev entry */
    109	struct csio_service_parms	rn_sparm;
    110
    111	/* FC transport attributes */
    112	struct fc_rport		*rport;		/* FC transport rport */
    113	uint32_t		supp_classes;	/* Supported FC classes */
    114	uint32_t		maxframe_size;	/* Max Frame size */
    115	uint32_t		scsi_id;	/* Transport given SCSI id */
    116
    117	struct csio_rnode_stats	stats;		/* Common rnode stats */
    118};
    119
    120#define csio_rn_flowid(rn)			((rn)->flowid)
    121#define csio_rn_wwpn(rn)			((rn)->rn_sparm.wwpn)
    122#define csio_rn_wwnn(rn)			((rn)->rn_sparm.wwnn)
    123#define csio_rnode_to_lnode(rn)			((rn)->lnp)
    124
    125int csio_is_rnode_ready(struct csio_rnode *rn);
    126void csio_rnode_state_to_str(struct csio_rnode *rn, int8_t *str);
    127
    128struct csio_rnode *csio_rnode_lookup_portid(struct csio_lnode *, uint32_t);
    129struct csio_rnode *csio_confirm_rnode(struct csio_lnode *,
    130					  uint32_t, struct fcoe_rdev_entry *);
    131
    132void csio_rnode_fwevt_handler(struct csio_rnode *rn, uint8_t fwevt);
    133
    134void csio_put_rnode(struct csio_lnode *ln, struct csio_rnode *rn);
    135
    136void csio_reg_rnode(struct csio_rnode *);
    137void csio_unreg_rnode(struct csio_rnode *);
    138
    139void csio_rnode_devloss_handler(struct csio_rnode *);
    140
    141#endif /* ifndef __CSIO_RNODE_H__ */