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
26
27
28 #include <fstream>
29 #include "fcntl.h"
30 #include "Handle.h"
31 #include "Trace.h"
32 #include "Exceptions.h"
33 #include "sun_fc.h"
34
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
get_random_bytes(HBA_UINT8 * ptr,size_t len)40 void get_random_bytes(HBA_UINT8 *ptr, size_t len) {
41 int fd = open("/dev/urandom", O_RDONLY);
42 size_t resid = len;
43 ssize_t bytes;
44
45 while (resid != 0) {
46 bytes = read(fd, ptr, resid);
47 ptr += bytes;
48 resid -= bytes;
49 }
50 close (fd);
51 return;
52 }
53
Sun_fcAdapterCreateWWN(HBA_HANDLE handle,HBA_UINT32 portindex,HBA_WWN * nwwn,HBA_WWN * pwwn,HBA_WWN * OUI,HBA_INT32 method)54 HBA_STATUS Sun_fcAdapterCreateWWN(HBA_HANDLE handle,
55 HBA_UINT32 portindex, HBA_WWN *nwwn, HBA_WWN *pwwn,
56 HBA_WWN *OUI, HBA_INT32 method) {
57 HBA_UINT8 randombyte[5] = {0};
58 HBA_WWN randomwwn = {0};
59 int index = 0;
60
61 Trace log("Sun_fcAdapterCreateWWN");
62
63 if ((nwwn == NULL) || (pwwn == NULL)) {
64 log.userError(
65 "NULL WWN pointer");
66 return (HBA_STATUS_ERROR_ARG);
67 }
68 if (method == HBA_CREATE_WWN_FACTORY) {
69 return (HBA_STATUS_ERROR_NOT_SUPPORTED);
70 }
71
72 try {
73 /* create EUI-64 Mapped WWN */
74 if (OUI == NULL) {
75 /* if no OUI spec'd, used one of Sun's */
76 randomwwn.wwn[index++] = 0x0;
77 randomwwn.wwn[index++] = 0x0;
78 randomwwn.wwn[index++] = 0x7D;
79 } else {
80 memcpy(randomwwn.wwn, OUI->wwn, sizeof(HBA_WWN));
81 index += 3;
82 }
83 /*
84 * for EUI-64 mapped, shift OUI first byte right two bits
85 * then set top two bits to 11
86 */
87 randomwwn.wwn[0] = randomwwn.wwn[0] >> 2;
88 randomwwn.wwn[0] = randomwwn.wwn[0] | 0xc0;
89
90 /* now create and add 40 random bits */
91 get_random_bytes(randombyte, 5);
92 memcpy(randomwwn.wwn+index, randombyte, 5);
93
94 memcpy(nwwn->wwn, randomwwn.wwn, sizeof(HBA_WWN));
95
96 /* toggle lowest bit, to make NWWN and PWWN unique */
97 randomwwn.wwn[7] = randomwwn.wwn[7] ^ 1;
98 memcpy(pwwn->wwn, randomwwn.wwn, sizeof(HBA_WWN));
99
100 return (HBA_STATUS_OK);
101 } catch (HBAException &e) {
102 return (e.getErrorCode());
103 } catch (...) {
104 log.internalError(
105 "Uncaught exception");
106 return (HBA_STATUS_ERROR);
107 }
108 }
109 #ifdef __cplusplus
110 }
111 #endif
112