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__ */ 142