1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  *
25  * FCIP mdb module
26  */
27 
28 
29 #include <sys/mdb_modapi.h>
30 #include <sys/mutex.h>
31 #include <sys/modctl.h>
32 #include <sys/ethernet.h>
33 #include <sys/fibre-channel/fc.h>
34 #include <sys/fibre-channel/impl/fc_ulpif.h>
35 #include <sys/fibre-channel/impl/fctl_private.h>
36 #include <sys/fibre-channel/ulp/fcip.h>
37 
38 /*
39  * Leadville fcip walker/dcmd code
40  */
41 
42 static int
43 fcip_walk_i(mdb_walk_state_t *wsp)
44 {
45 	if (wsp->walk_addr == NULL &&
46 	    mdb_readvar(&wsp->walk_addr, "fcip_port_head") == -1) {
47 		mdb_warn("failed to read 'fcip_port_head'");
48 		return (WALK_ERR);
49 	}
50 
51 	wsp->walk_data = mdb_alloc(sizeof (fcip_port_info_t), UM_SLEEP);
52 	return (WALK_NEXT);
53 }
54 
55 static int
56 fcip_walk_s(mdb_walk_state_t *wsp)
57 {
58 	int status;
59 
60 	if (wsp->walk_addr == NULL)
61 		return (WALK_DONE);
62 
63 	if (mdb_vread(wsp->walk_data, sizeof (fcip_port_info_t),
64 	    wsp->walk_addr) == -1) {
65 		mdb_warn("failed to read fcip_port_info at %p", wsp->walk_addr);
66 		return (WALK_DONE);
67 	}
68 
69 	status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
70 	    wsp->walk_cbdata);
71 
72 	wsp->walk_addr =
73 	    (uintptr_t)(((fcip_port_info_t *)wsp->walk_data)->fcipp_next);
74 
75 	return (status);
76 }
77 
78 /*
79  * The walker's fini function is invoked at the end of each walk.  Since we
80  * dynamically allocated a fc_fca_port_t in port_walk_i, we must free it now.
81  */
82 static void
83 fcip_walk_f(mdb_walk_state_t *wsp)
84 {
85 	mdb_free(wsp->walk_data, sizeof (fc_fca_port_t));
86 }
87 
88 
89 static int
90 fcip(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
91 {
92 	fcip_port_info_t	pinfo;
93 
94 	if (argc != 0) {
95 		return (DCMD_USAGE);
96 	}
97 
98 	if (!(flags & DCMD_ADDRSPEC)) {
99 		if (mdb_walk_dcmd("fcip", "fcip",
100 		    argc, argv) == -1) {
101 			mdb_warn("failed to walk 'fcip_port_head'");
102 			return (DCMD_ERR);
103 		}
104 		return (DCMD_OK);
105 	}
106 
107 	if (DCMD_HDRSPEC(flags))
108 		mdb_printf("%12s %12s %12s %16s %16s\n",
109 		    "FCIP Struct", "Handle", "DIP", "Port WWN", "Node WWN");
110 
111 	/*
112 	 * For each port, we just need to read the fc_fca_port_t struct, read
113 	 * the port_handle
114 	 */
115 	if (mdb_vread(&pinfo, sizeof (fcip_port_info_t), addr) ==
116 	    sizeof (fcip_port_info_t)) {
117 		mdb_printf("%12p %12p %12p %02x%02x%02x%02x%02x%02x%02x%02x "
118 		    "%02x%02x%02x%02x%02x%02x%02x%02x\n",
119 		    pinfo.fcipp_fcip, pinfo.fcipp_handle, pinfo.fcipp_dip,
120 		    pinfo.fcipp_pwwn.raw_wwn[0], pinfo.fcipp_pwwn.raw_wwn[1],
121 		    pinfo.fcipp_pwwn.raw_wwn[2], pinfo.fcipp_pwwn.raw_wwn[3],
122 		    pinfo.fcipp_pwwn.raw_wwn[4], pinfo.fcipp_pwwn.raw_wwn[5],
123 		    pinfo.fcipp_pwwn.raw_wwn[6], pinfo.fcipp_pwwn.raw_wwn[7],
124 		    pinfo.fcipp_nwwn.raw_wwn[0], pinfo.fcipp_nwwn.raw_wwn[1],
125 		    pinfo.fcipp_nwwn.raw_wwn[2], pinfo.fcipp_nwwn.raw_wwn[3],
126 		    pinfo.fcipp_nwwn.raw_wwn[4], pinfo.fcipp_nwwn.raw_wwn[5],
127 		    pinfo.fcipp_nwwn.raw_wwn[6], pinfo.fcipp_nwwn.raw_wwn[7]);
128 
129 	} else
130 		mdb_warn("failed to read port info at %p", addr);
131 
132 	return (DCMD_OK);
133 }
134 
135 
136 /*
137  * MDB module linkage information:
138  *
139  * We declare a list of structures describing our dcmds, a list of structures
140  * describing our walkers, and a function named _mdb_init to return a pointer
141  * to our module information.
142  */
143 
144 static const mdb_dcmd_t dcmds[] = {
145 	{ "fcip", NULL, "Leadville fcip instances", fcip },
146 	{ NULL }
147 };
148 
149 static const mdb_walker_t walkers[] = {
150 	{ "fcip", "walk list of Leadville fcip instances",
151 		fcip_walk_i, fcip_walk_s, fcip_walk_f },
152 	{ NULL }
153 };
154 
155 static const mdb_modinfo_t modinfo = {
156 	MDB_API_VERSION, dcmds, walkers
157 };
158 
159 const mdb_modinfo_t *
160 _mdb_init(void)
161 {
162 	return (&modinfo);
163 }
164