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a3667aae NKI |
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 */ | |
41 | enum 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 */ | |
60 | struct 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 */ | |
4f8d1bd2 | 66 | uint32_t n_evt_fw[PROTO_ERR_IMPL_LOGO + 1]; /* fw events */ |
a3667aae NKI |
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 | ||
88 | struct 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 | ||
125 | int csio_is_rnode_ready(struct csio_rnode *rn); | |
126 | void csio_rnode_state_to_str(struct csio_rnode *rn, int8_t *str); | |
127 | ||
128 | struct csio_rnode *csio_rnode_lookup_portid(struct csio_lnode *, uint32_t); | |
129 | struct csio_rnode *csio_confirm_rnode(struct csio_lnode *, | |
130 | uint32_t, struct fcoe_rdev_entry *); | |
131 | ||
132 | void csio_rnode_fwevt_handler(struct csio_rnode *rn, uint8_t fwevt); | |
133 | ||
134 | void csio_put_rnode(struct csio_lnode *ln, struct csio_rnode *rn); | |
135 | ||
136 | void csio_reg_rnode(struct csio_rnode *); | |
137 | void csio_unreg_rnode(struct csio_rnode *); | |
138 | ||
139 | void csio_rnode_devloss_handler(struct csio_rnode *); | |
140 | ||
141 | #endif /* ifndef __CSIO_RNODE_H__ */ |