1fec509a0Sgm /*
2fec509a0Sgm * CDDL HEADER START
3fec509a0Sgm *
4fec509a0Sgm * The contents of this file are subject to the terms of the
5fec509a0Sgm * Common Development and Distribution License (the "License").
6fec509a0Sgm * You may not use this file except in compliance with the License.
7fec509a0Sgm *
8fec509a0Sgm * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9fec509a0Sgm * or http://www.opensolaris.org/os/licensing.
10fec509a0Sgm * See the License for the specific language governing permissions
11fec509a0Sgm * and limitations under the License.
12fec509a0Sgm *
13fec509a0Sgm * When distributing Covered Code, include this CDDL HEADER in each
14fec509a0Sgm * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15fec509a0Sgm * If applicable, add the following below this CDDL HEADER, with the
16fec509a0Sgm * fields enclosed by brackets "[]" replaced with your own identifying
17fec509a0Sgm * information: Portions Copyright [yyyy] [name of copyright owner]
18fec509a0Sgm *
19fec509a0Sgm * CDDL HEADER END
20fec509a0Sgm */
21fec509a0Sgm /*
22fec509a0Sgm * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23fec509a0Sgm * Use is subject to license terms.
24fec509a0Sgm */
25fec509a0Sgm
26fec509a0Sgm #pragma ident "%Z%%M% %I% %E% SMI"
27fec509a0Sgm
28fec509a0Sgm #include <sys/types.h>
29fec509a0Sgm #include <sys/ddi.h>
30fec509a0Sgm #include <sys/sunddi.h>
31fec509a0Sgm #include <sys/systm.h>
32fec509a0Sgm #include <sys/kstat.h>
33fec509a0Sgm #include <sys/crypto/common.h>
34fec509a0Sgm #include <sys/crypto/spi.h>
35fec509a0Sgm #include <sys/n2rng.h>
36fec509a0Sgm
37fec509a0Sgm /*
38fec509a0Sgm * Kernel statistics.
39fec509a0Sgm */
40fec509a0Sgm static int n2rng_ksupdate(kstat_t *, int);
41fec509a0Sgm
42fec509a0Sgm /*
43fec509a0Sgm * Initialize Kstats.
44fec509a0Sgm */
45fec509a0Sgm void
n2rng_ksinit(n2rng_t * n2rng)46fec509a0Sgm n2rng_ksinit(n2rng_t *n2rng)
47fec509a0Sgm {
48fec509a0Sgm int instance;
49*741c280dStwelke int i;
50*741c280dStwelke int j;
51*741c280dStwelke char buf[64];
52fec509a0Sgm
53fec509a0Sgm if (ddi_getprop(DDI_DEV_T_ANY, n2rng->n_dip,
54fec509a0Sgm DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "nostats", 0) != 0) {
55fec509a0Sgm /*
56fec509a0Sgm * sysadmin has explicity disabled stats to prevent
57fec509a0Sgm * covert channel.
58fec509a0Sgm */
59fec509a0Sgm return;
60fec509a0Sgm }
61fec509a0Sgm
62fec509a0Sgm instance = ddi_get_instance(n2rng->n_dip);
63fec509a0Sgm
64fec509a0Sgm /*
65fec509a0Sgm * Named kstats.
66fec509a0Sgm */
67fec509a0Sgm n2rng->n_ksp = kstat_create(DRIVER, instance, NULL, "misc",
68fec509a0Sgm KSTAT_TYPE_NAMED,
69fec509a0Sgm sizeof (n2rng_stat_t) / sizeof (kstat_named_t),
70fec509a0Sgm KSTAT_FLAG_WRITABLE);
71fec509a0Sgm if (n2rng->n_ksp == NULL) {
72fec509a0Sgm n2rng_error(n2rng, "unable to create kstats");
73fec509a0Sgm } else {
74fec509a0Sgm n2rng_stat_t *dkp = (n2rng_stat_t *)n2rng->n_ksp->ks_data;
75fec509a0Sgm
76fec509a0Sgm kstat_named_init(&dkp->ns_status, "status", KSTAT_DATA_CHAR);
77fec509a0Sgm
78fec509a0Sgm kstat_named_init(&dkp->ns_algs[DS_RNGJOBS], "rngjobs",
79fec509a0Sgm KSTAT_DATA_ULONGLONG);
80fec509a0Sgm kstat_named_init(&dkp->ns_algs[DS_RNGBYTES], "rngbytes",
81fec509a0Sgm KSTAT_DATA_ULONGLONG);
82fec509a0Sgm
83*741c280dStwelke if (n2rng_iscontrol(n2rng)) {
84*741c280dStwelke
85*741c280dStwelke for (i = 0; i < n2rng->n_ctl_data->n_num_rngs; i++) {
86*741c280dStwelke (void) sprintf(buf, "rng%d-state", i);
87*741c280dStwelke kstat_named_init(&dkp->ns_rngstate[i],
88*741c280dStwelke buf, KSTAT_DATA_CHAR);
89*741c280dStwelke for (j = 0; j < N2RNG_NOSC; j++) {
90*741c280dStwelke (void) sprintf(buf,
91*741c280dStwelke "rng%d-cell%d-bias", i, j);
92*741c280dStwelke kstat_named_init
93*741c280dStwelke (&dkp->ns_rngbias[i][j],
94*741c280dStwelke buf, KSTAT_DATA_ULONGLONG);
95*741c280dStwelke (void) sprintf(buf,
96*741c280dStwelke "rng%d-cell%d-entropy", i, j);
97*741c280dStwelke kstat_named_init
98*741c280dStwelke (&dkp->ns_rngentropy[i][j],
99*741c280dStwelke buf, KSTAT_DATA_ULONGLONG);
100*741c280dStwelke }
101*741c280dStwelke }
102*741c280dStwelke }
103fec509a0Sgm n2rng->n_ksp->ks_update = n2rng_ksupdate;
104fec509a0Sgm n2rng->n_ksp->ks_private = n2rng;
105fec509a0Sgm
106fec509a0Sgm kstat_install(n2rng->n_ksp);
107fec509a0Sgm }
108fec509a0Sgm }
109fec509a0Sgm
110fec509a0Sgm /*
111fec509a0Sgm * Deinitialize Kstats.
112fec509a0Sgm */
113fec509a0Sgm void
n2rng_ksdeinit(n2rng_t * n2rng)114fec509a0Sgm n2rng_ksdeinit(n2rng_t *n2rng)
115fec509a0Sgm {
116fec509a0Sgm
117fec509a0Sgm if (n2rng->n_ksp != NULL) {
118fec509a0Sgm kstat_delete(n2rng->n_ksp);
119fec509a0Sgm n2rng->n_ksp = NULL;
120fec509a0Sgm }
121fec509a0Sgm }
122fec509a0Sgm
123fec509a0Sgm /*
124fec509a0Sgm * Update Kstats.
125fec509a0Sgm */
126fec509a0Sgm int
n2rng_ksupdate(kstat_t * ksp,int rw)127fec509a0Sgm n2rng_ksupdate(kstat_t *ksp, int rw)
128fec509a0Sgm {
129fec509a0Sgm n2rng_t *n2rng;
130fec509a0Sgm n2rng_stat_t *dkp;
131fec509a0Sgm int i;
132*741c280dStwelke int j;
133fec509a0Sgm
134fec509a0Sgm n2rng = (n2rng_t *)ksp->ks_private;
135fec509a0Sgm dkp = (n2rng_stat_t *)ksp->ks_data;
136fec509a0Sgm
137fec509a0Sgm if (rw == KSTAT_WRITE) {
138fec509a0Sgm for (i = 0; i < DS_MAX; i++) {
139fec509a0Sgm n2rng->n_stats[i] = dkp->ns_algs[i].value.ull;
140fec509a0Sgm }
141fec509a0Sgm } else {
142fec509a0Sgm /* handy status value */
143*741c280dStwelke if (n2rng_isfailed(n2rng)) {
144fec509a0Sgm /* device has failed */
145*741c280dStwelke (void) strcpy(dkp->ns_status.value.c, "failed");
146*741c280dStwelke } else if (!n2rng_isconfigured(n2rng)) {
147*741c280dStwelke /* device is not configured */
148*741c280dStwelke (void) strcpy(dkp->ns_status.value.c, "offline");
149fec509a0Sgm } else {
150fec509a0Sgm /* everything looks good */
151fec509a0Sgm (void) strcpy(dkp->ns_status.value.c, "online");
152fec509a0Sgm }
153fec509a0Sgm
154fec509a0Sgm for (i = 0; i < DS_MAX; i++) {
155fec509a0Sgm dkp->ns_algs[i].value.ull = n2rng->n_stats[i];
156fec509a0Sgm }
157*741c280dStwelke
158*741c280dStwelke if (n2rng_iscontrol(n2rng)) {
159*741c280dStwelke rng_entry_t *rng;
160*741c280dStwelke
161*741c280dStwelke for (i = 0; i < n2rng->n_ctl_data->n_num_rngs; i++) {
162*741c280dStwelke
163*741c280dStwelke rng = &n2rng->n_ctl_data->n_rngs[i];
164*741c280dStwelke
165*741c280dStwelke switch (rng->n_rng_state) {
166*741c280dStwelke case CTL_STATE_ERROR:
167*741c280dStwelke (void) strcpy(
168*741c280dStwelke dkp->ns_rngstate[i].value.c,
169*741c280dStwelke "error");
170*741c280dStwelke break;
171*741c280dStwelke case CTL_STATE_HEALTHCHECK:
172*741c280dStwelke (void) strcpy(
173*741c280dStwelke dkp->ns_rngstate[i].value.c,
174*741c280dStwelke "healthcheck");
175*741c280dStwelke break;
176*741c280dStwelke case CTL_STATE_CONFIGURED:
177*741c280dStwelke (void) strcpy(
178*741c280dStwelke dkp->ns_rngstate[i].value.c,
179*741c280dStwelke "online");
180*741c280dStwelke break;
181*741c280dStwelke case CTL_STATE_UNCONFIGURED:
182*741c280dStwelke (void) strcpy(
183*741c280dStwelke dkp->ns_rngstate[i].value.c,
184*741c280dStwelke "offline");
185*741c280dStwelke break;
186*741c280dStwelke default:
187*741c280dStwelke (void) strcpy(
188*741c280dStwelke dkp->ns_rngstate[i].value.c,
189*741c280dStwelke "unknown");
190*741c280dStwelke break;
191*741c280dStwelke }
192*741c280dStwelke for (j = 0; j < N2RNG_NOSC; j++) {
193*741c280dStwelke dkp->ns_rngbias[i][j].value.ull =
194*741c280dStwelke rng->n_bias_info[j].bias;
195*741c280dStwelke dkp->ns_rngentropy[i][j].value.ull =
196*741c280dStwelke rng->n_bias_info[j].entropy;
197*741c280dStwelke }
198*741c280dStwelke }
199*741c280dStwelke }
200fec509a0Sgm }
201fec509a0Sgm
202fec509a0Sgm return (0);
203fec509a0Sgm }
204