2 * Copyright (c) 2005-2008 Daniel Braniss <danny@cs.huji.ac.il>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/dev/iscsi/initiator/isc_subr.c,v 1.3 2009/02/14 11:34:57 rrs Exp $
30 | $Id: isc_subr.c,v 1.20 2006/12/01 09:10:17 danny Exp danny $
33 #include "opt_iscsi_initiator.h"
35 #include <sys/param.h>
36 #include <sys/kernel.h>
38 #include <sys/systm.h>
39 #include <sys/malloc.h>
40 #include <sys/ctype.h>
41 #include <sys/errno.h>
42 #include <sys/sysctl.h>
45 #include <sys/socketvar.h>
46 #include <sys/socket.h>
47 #include <sys/protosw.h>
49 #include <sys/ioccom.h>
50 #include <sys/queue.h>
51 #include <sys/kthread.h>
52 #include <sys/syslog.h>
54 #include <sys/libkern.h>
55 #include <sys/eventhandler.h>
56 #include <sys/mutex2.h>
58 #include <bus/cam/cam.h>
60 #include "dev/disk/iscsi/initiator/iscsi.h"
61 #include "dev/disk/iscsi/initiator/iscsivar.h"
64 i_strdupin(char *s, size_t maxlen)
69 p = kmalloc(maxlen, M_ISCSI, M_WAITOK);
70 if(copyinstr(s, p, maxlen, &len)) {
74 q = kmalloc(len, M_ISCSI, M_WAITOK);
82 | XXX: not finished coding
85 i_setopt(isc_session_t *sp, isc_opt_t *opt)
87 const int digsize = 6;
89 char hdigest[digsize], ddigest[digsize];
92 if(opt->maxRecvDataSegmentLength > 0) {
93 sp->opt.maxRecvDataSegmentLength = opt->maxRecvDataSegmentLength;
94 sdebug(2, "maxRecvDataSegmentLength=%d", sp->opt.maxRecvDataSegmentLength);
96 if(opt->maxXmitDataSegmentLength > 0) {
98 sp->opt.maxXmitDataSegmentLength = opt->maxXmitDataSegmentLength;
99 sdebug(2, "maXmitDataSegmentLength=%d", sp->opt.maxXmitDataSegmentLength);
101 if(opt->maxBurstLength != 0) {
102 sp->opt.maxBurstLength = opt->maxBurstLength;
103 sdebug(2, "maxBurstLength=%d", sp->opt.maxBurstLength);
106 if(opt->targetAddress != NULL) {
107 if(sp->opt.targetAddress != NULL)
108 kfree(sp->opt.targetAddress, M_ISCSI);
109 sp->opt.targetAddress = i_strdupin(opt->targetAddress, 128);
110 sdebug(4, "opt.targetAddress='%s'", sp->opt.targetAddress);
112 if(opt->targetName != NULL) {
113 if(sp->opt.targetName != NULL)
114 kfree(sp->opt.targetName, M_ISCSI);
115 sp->opt.targetName = i_strdupin(opt->targetName, 128);
116 sdebug(4, "opt.targetName='%s'", sp->opt.targetName);
118 if(opt->initiatorName != NULL) {
119 if(sp->opt.initiatorName != NULL)
120 kfree(sp->opt.initiatorName, M_ISCSI);
121 sp->opt.initiatorName = i_strdupin(opt->initiatorName, 128);
122 sdebug(4, "opt.initiatorName='%s'", sp->opt.initiatorName);
125 if(opt->maxluns > 0) {
126 if(opt->maxluns > ISCSI_MAX_LUNS)
127 sp->opt.maxluns = ISCSI_MAX_LUNS; // silently chop it down ...
128 sp->opt.maxluns = opt->maxluns;
129 sdebug(4, "opt.maxluns=%d", sp->opt.maxluns);
132 /* Try to copy the userland pointer containing the header digest */
133 if(opt->headerDigest != NULL) {
134 if ((copyinstr(opt->headerDigest, &hdigest, digsize, &len)) != EFAULT) {
135 sdebug(2, "opt.headerDigest='%s'", hdigest);
136 if(strcmp(hdigest, "CRC32C") == 0) {
137 sp->hdrDigest = (digest_t *)crc32_ext;
138 sdebug(2, "headerDigest set");
142 /* Try to copy the userland pointer containing the data digest */
143 if(opt->dataDigest != NULL) {
144 if ((copyinstr(opt->dataDigest, &ddigest, digsize, &len)) != EFAULT) {
145 if (strcmp(ddigest, "CRC32C") == 0) {
146 sp->dataDigest = (digest_t *)crc32_ext;
147 sdebug(2, "dataDigest set");
156 i_freeopt(isc_opt_t *opt)
158 if(opt->targetAddress != NULL) {
159 kfree(opt->targetAddress, M_ISCSI);
160 opt->targetAddress = NULL;
162 if(opt->targetName != NULL) {
163 kfree(opt->targetName, M_ISCSI);
164 opt->targetName = NULL;
166 if(opt->initiatorName != NULL) {
167 kfree(opt->initiatorName, M_ISCSI);
168 opt->initiatorName = NULL;