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 */ |
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 | |
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__ */ |
142 | |