1009ea47eSEdward Tomasz Napierala /*-
2*4d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause
3718cf2ccSPedro F. Giffuni *
4009ea47eSEdward Tomasz Napierala * Copyright (c) 2012 The FreeBSD Foundation
5009ea47eSEdward Tomasz Napierala *
6009ea47eSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship
7009ea47eSEdward Tomasz Napierala * from the FreeBSD Foundation.
8009ea47eSEdward Tomasz Napierala *
9009ea47eSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without
10009ea47eSEdward Tomasz Napierala * modification, are permitted provided that the following conditions
11009ea47eSEdward Tomasz Napierala * are met:
12009ea47eSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright
13009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer.
14009ea47eSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright
15009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the
16009ea47eSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution.
17009ea47eSEdward Tomasz Napierala *
18009ea47eSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19009ea47eSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20009ea47eSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21009ea47eSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22009ea47eSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23009ea47eSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24009ea47eSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25009ea47eSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26009ea47eSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27009ea47eSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28009ea47eSEdward Tomasz Napierala * SUCH DAMAGE.
29009ea47eSEdward Tomasz Napierala *
30009ea47eSEdward Tomasz Napierala */
31009ea47eSEdward Tomasz Napierala
32009ea47eSEdward Tomasz Napierala /*
33009ea47eSEdward Tomasz Napierala * iSCSI Common Layer. It's used by both the initiator and target to send
34009ea47eSEdward Tomasz Napierala * and receive iSCSI PDUs.
35009ea47eSEdward Tomasz Napierala */
36009ea47eSEdward Tomasz Napierala
37009ea47eSEdward Tomasz Napierala #include <sys/param.h>
38009ea47eSEdward Tomasz Napierala #include <sys/condvar.h>
39009ea47eSEdward Tomasz Napierala #include <sys/conf.h>
40009ea47eSEdward Tomasz Napierala #include <sys/lock.h>
41321b17ecSEdward Tomasz Napierala #include <sys/kernel.h>
42321b17ecSEdward Tomasz Napierala #include <sys/malloc.h>
43009ea47eSEdward Tomasz Napierala #include <sys/mutex.h>
44009ea47eSEdward Tomasz Napierala #include <sys/module.h>
45321b17ecSEdward Tomasz Napierala #include <sys/queue.h>
46099ad7abSEdward Tomasz Napierala #include <sys/sbuf.h>
47f41492b0SEdward Tomasz Napierala #include <sys/socket.h>
48009ea47eSEdward Tomasz Napierala #include <sys/sysctl.h>
49009ea47eSEdward Tomasz Napierala #include <sys/systm.h>
50009ea47eSEdward Tomasz Napierala #include <sys/sx.h>
51009ea47eSEdward Tomasz Napierala
52ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/icl.h>
53321b17ecSEdward Tomasz Napierala #include <icl_conn_if.h>
54321b17ecSEdward Tomasz Napierala
55321b17ecSEdward Tomasz Napierala struct icl_module {
56321b17ecSEdward Tomasz Napierala TAILQ_ENTRY(icl_module) im_next;
57321b17ecSEdward Tomasz Napierala char *im_name;
58b8911594SEdward Tomasz Napierala bool im_iser;
59321b17ecSEdward Tomasz Napierala int im_priority;
607b02c1e8SJohn Baldwin int (*im_limits)(struct icl_drv_limits *idl,
617b02c1e8SJohn Baldwin int socket);
62321b17ecSEdward Tomasz Napierala struct icl_conn *(*im_new_conn)(const char *name,
63321b17ecSEdward Tomasz Napierala struct mtx *lock);
64321b17ecSEdward Tomasz Napierala };
65321b17ecSEdward Tomasz Napierala
66321b17ecSEdward Tomasz Napierala struct icl_softc {
67321b17ecSEdward Tomasz Napierala struct sx sc_lock;
68321b17ecSEdward Tomasz Napierala TAILQ_HEAD(, icl_module) sc_modules;
69321b17ecSEdward Tomasz Napierala };
70009ea47eSEdward Tomasz Napierala
7193fb610fSEdward Tomasz Napierala static int sysctl_kern_icl_offloads(SYSCTL_HANDLER_ARGS);
72099ad7abSEdward Tomasz Napierala static MALLOC_DEFINE(M_ICL, "icl", "iSCSI Common Layer");
73099ad7abSEdward Tomasz Napierala static struct icl_softc *sc;
74099ad7abSEdward Tomasz Napierala
75e0d69c5aSPawel Biernacki SYSCTL_NODE(_kern, OID_AUTO, icl, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
76e0d69c5aSPawel Biernacki "iSCSI Common Layer");
77321b17ecSEdward Tomasz Napierala int icl_debug = 1;
78605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_icl, OID_AUTO, debug, CTLFLAG_RWTUN,
79321b17ecSEdward Tomasz Napierala &icl_debug, 0, "Enable debug messages");
8093fb610fSEdward Tomasz Napierala SYSCTL_PROC(_kern_icl, OID_AUTO, offloads,
81099ad7abSEdward Tomasz Napierala CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
8209c84055SEdward Tomasz Napierala NULL, false, sysctl_kern_icl_offloads, "A",
8393fb610fSEdward Tomasz Napierala "List of ICL modules");
8409c84055SEdward Tomasz Napierala SYSCTL_PROC(_kern_icl, OID_AUTO, iser_offloads,
8509c84055SEdward Tomasz Napierala CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
8609c84055SEdward Tomasz Napierala NULL, true, sysctl_kern_icl_offloads, "A",
8709c84055SEdward Tomasz Napierala "List of iSER ICL modules");
88009ea47eSEdward Tomasz Napierala
89099ad7abSEdward Tomasz Napierala static int
sysctl_kern_icl_offloads(SYSCTL_HANDLER_ARGS)9093fb610fSEdward Tomasz Napierala sysctl_kern_icl_offloads(SYSCTL_HANDLER_ARGS)
91099ad7abSEdward Tomasz Napierala {
92099ad7abSEdward Tomasz Napierala const struct icl_module *im;
93099ad7abSEdward Tomasz Napierala struct sbuf sb;
9409c84055SEdward Tomasz Napierala bool iser = arg2;
95099ad7abSEdward Tomasz Napierala int error;
96099ad7abSEdward Tomasz Napierala
97099ad7abSEdward Tomasz Napierala sbuf_new(&sb, NULL, 256, SBUF_AUTOEXTEND | SBUF_INCLUDENUL);
98099ad7abSEdward Tomasz Napierala
99099ad7abSEdward Tomasz Napierala sx_slock(&sc->sc_lock);
100099ad7abSEdward Tomasz Napierala TAILQ_FOREACH(im, &sc->sc_modules, im_next) {
10109c84055SEdward Tomasz Napierala if (im->im_iser != iser)
10209c84055SEdward Tomasz Napierala continue;
103099ad7abSEdward Tomasz Napierala if (im != TAILQ_FIRST(&sc->sc_modules))
104099ad7abSEdward Tomasz Napierala sbuf_putc(&sb, ' ');
105099ad7abSEdward Tomasz Napierala sbuf_printf(&sb, "%s", im->im_name);
106099ad7abSEdward Tomasz Napierala }
107099ad7abSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock);
108099ad7abSEdward Tomasz Napierala
109099ad7abSEdward Tomasz Napierala error = sbuf_finish(&sb);
110099ad7abSEdward Tomasz Napierala if (error == 0)
111099ad7abSEdward Tomasz Napierala error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
112099ad7abSEdward Tomasz Napierala sbuf_delete(&sb);
113099ad7abSEdward Tomasz Napierala return (error);
114099ad7abSEdward Tomasz Napierala }
115009ea47eSEdward Tomasz Napierala
116321b17ecSEdward Tomasz Napierala static struct icl_module *
icl_find(const char * name,bool iser,bool quiet)117b8911594SEdward Tomasz Napierala icl_find(const char *name, bool iser, bool quiet)
118009ea47eSEdward Tomasz Napierala {
119321b17ecSEdward Tomasz Napierala struct icl_module *im, *im_max;
120321b17ecSEdward Tomasz Napierala
121321b17ecSEdward Tomasz Napierala sx_assert(&sc->sc_lock, SA_LOCKED);
122009ea47eSEdward Tomasz Napierala
123009ea47eSEdward Tomasz Napierala /*
124321b17ecSEdward Tomasz Napierala * If the name was not specified, pick a module with highest
125321b17ecSEdward Tomasz Napierala * priority.
126009ea47eSEdward Tomasz Napierala */
127321b17ecSEdward Tomasz Napierala if (name == NULL || name[0] == '\0') {
128b8911594SEdward Tomasz Napierala im_max = NULL;
129321b17ecSEdward Tomasz Napierala TAILQ_FOREACH(im, &sc->sc_modules, im_next) {
130b8911594SEdward Tomasz Napierala if (im->im_iser != iser)
131b8911594SEdward Tomasz Napierala continue;
132b8911594SEdward Tomasz Napierala if (im_max == NULL ||
133b8911594SEdward Tomasz Napierala im->im_priority > im_max->im_priority)
134321b17ecSEdward Tomasz Napierala im_max = im;
135009ea47eSEdward Tomasz Napierala }
136009ea47eSEdward Tomasz Napierala
137b8911594SEdward Tomasz Napierala if (iser && im_max == NULL && !quiet)
138b8911594SEdward Tomasz Napierala ICL_WARN("no iSER-capable offload found");
139b8911594SEdward Tomasz Napierala
140321b17ecSEdward Tomasz Napierala return (im_max);
141009ea47eSEdward Tomasz Napierala }
142009ea47eSEdward Tomasz Napierala
143321b17ecSEdward Tomasz Napierala TAILQ_FOREACH(im, &sc->sc_modules, im_next) {
144b8911594SEdward Tomasz Napierala if (strcasecmp(im->im_name, name) != 0)
145b8911594SEdward Tomasz Napierala continue;
146b8911594SEdward Tomasz Napierala
147b8911594SEdward Tomasz Napierala if (!im->im_iser && iser && !quiet) {
148b8911594SEdward Tomasz Napierala ICL_WARN("offload \"%s\" is not iSER-capable", name);
149b8911594SEdward Tomasz Napierala return (NULL);
150b8911594SEdward Tomasz Napierala }
151b8911594SEdward Tomasz Napierala if (im->im_iser && !iser && !quiet) {
152b8911594SEdward Tomasz Napierala ICL_WARN("offload \"%s\" is iSER-only", name);
153b8911594SEdward Tomasz Napierala return (NULL);
154b8911594SEdward Tomasz Napierala }
155b8911594SEdward Tomasz Napierala
156321b17ecSEdward Tomasz Napierala return (im);
157009ea47eSEdward Tomasz Napierala }
158009ea47eSEdward Tomasz Napierala
159b8911594SEdward Tomasz Napierala if (!quiet)
160b8911594SEdward Tomasz Napierala ICL_WARN("offload \"%s\" not found", name);
161b8911594SEdward Tomasz Napierala
162009ea47eSEdward Tomasz Napierala return (NULL);
163009ea47eSEdward Tomasz Napierala }
164009ea47eSEdward Tomasz Napierala
165009ea47eSEdward Tomasz Napierala struct icl_conn *
icl_new_conn(const char * offload,bool iser,const char * name,struct mtx * lock)166b8911594SEdward Tomasz Napierala icl_new_conn(const char *offload, bool iser, const char *name, struct mtx *lock)
167009ea47eSEdward Tomasz Napierala {
168321b17ecSEdward Tomasz Napierala struct icl_module *im;
169009ea47eSEdward Tomasz Napierala struct icl_conn *ic;
170009ea47eSEdward Tomasz Napierala
171321b17ecSEdward Tomasz Napierala sx_slock(&sc->sc_lock);
172b8911594SEdward Tomasz Napierala im = icl_find(offload, iser, false);
173321b17ecSEdward Tomasz Napierala if (im == NULL) {
174321b17ecSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock);
175321b17ecSEdward Tomasz Napierala return (NULL);
176321b17ecSEdward Tomasz Napierala }
177009ea47eSEdward Tomasz Napierala
178321b17ecSEdward Tomasz Napierala ic = im->im_new_conn(name, lock);
179321b17ecSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock);
180009ea47eSEdward Tomasz Napierala
181009ea47eSEdward Tomasz Napierala return (ic);
182009ea47eSEdward Tomasz Napierala }
183009ea47eSEdward Tomasz Napierala
184321b17ecSEdward Tomasz Napierala int
icl_limits(const char * offload,bool iser,int socket,struct icl_drv_limits * idl)1857b02c1e8SJohn Baldwin icl_limits(const char *offload, bool iser, int socket,
1867b02c1e8SJohn Baldwin struct icl_drv_limits *idl)
187009ea47eSEdward Tomasz Napierala {
188321b17ecSEdward Tomasz Napierala struct icl_module *im;
189321b17ecSEdward Tomasz Napierala int error;
190009ea47eSEdward Tomasz Napierala
19197b84d34SNavdeep Parhar bzero(idl, sizeof(*idl));
192321b17ecSEdward Tomasz Napierala sx_slock(&sc->sc_lock);
193b8911594SEdward Tomasz Napierala im = icl_find(offload, iser, false);
194321b17ecSEdward Tomasz Napierala if (im == NULL) {
195321b17ecSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock);
196321b17ecSEdward Tomasz Napierala return (ENXIO);
197009ea47eSEdward Tomasz Napierala }
198009ea47eSEdward Tomasz Napierala
1997b02c1e8SJohn Baldwin error = im->im_limits(idl, socket);
200321b17ecSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock);
201321b17ecSEdward Tomasz Napierala
20297b84d34SNavdeep Parhar /*
20397b84d34SNavdeep Parhar * Validate the limits provided by the driver against values allowed by
20497b84d34SNavdeep Parhar * the iSCSI RFC. 0 means iscsid/ctld should pick a reasonable value.
20597b84d34SNavdeep Parhar *
20697b84d34SNavdeep Parhar * Note that max_send_dsl is an internal implementation detail and not
20797b84d34SNavdeep Parhar * part of the RFC.
20897b84d34SNavdeep Parhar */
20997b84d34SNavdeep Parhar #define OUT_OF_RANGE(x, lo, hi) ((x) != 0 && ((x) < (lo) || (x) > (hi)))
21097b84d34SNavdeep Parhar if (error == 0 &&
21197b84d34SNavdeep Parhar (OUT_OF_RANGE(idl->idl_max_recv_data_segment_length, 512, 16777215) ||
21297b84d34SNavdeep Parhar OUT_OF_RANGE(idl->idl_max_send_data_segment_length, 512, 16777215) ||
21397b84d34SNavdeep Parhar OUT_OF_RANGE(idl->idl_max_burst_length, 512, 16777215) ||
21497b84d34SNavdeep Parhar OUT_OF_RANGE(idl->idl_first_burst_length, 512, 16777215))) {
21597b84d34SNavdeep Parhar error = EINVAL;
21697b84d34SNavdeep Parhar }
21797b84d34SNavdeep Parhar #undef OUT_OF_RANGE
21897b84d34SNavdeep Parhar
21997b84d34SNavdeep Parhar /*
22097b84d34SNavdeep Parhar * If both first_burst and max_burst are provided then first_burst must
22197b84d34SNavdeep Parhar * not exceed max_burst.
22297b84d34SNavdeep Parhar */
22397b84d34SNavdeep Parhar if (error == 0 && idl->idl_first_burst_length > 0 &&
22497b84d34SNavdeep Parhar idl->idl_max_burst_length > 0 &&
22597b84d34SNavdeep Parhar idl->idl_first_burst_length > idl->idl_max_burst_length) {
22697b84d34SNavdeep Parhar error = EINVAL;
22797b84d34SNavdeep Parhar }
22897b84d34SNavdeep Parhar
229321b17ecSEdward Tomasz Napierala return (error);
230321b17ecSEdward Tomasz Napierala }
231321b17ecSEdward Tomasz Napierala
232321b17ecSEdward Tomasz Napierala int
icl_register(const char * offload,bool iser,int priority,int (* limits)(struct icl_drv_limits *,int),struct icl_conn * (* new_conn)(const char *,struct mtx *))23397b84d34SNavdeep Parhar icl_register(const char *offload, bool iser, int priority,
2347b02c1e8SJohn Baldwin int (*limits)(struct icl_drv_limits *, int),
235321b17ecSEdward Tomasz Napierala struct icl_conn *(*new_conn)(const char *, struct mtx *))
236009ea47eSEdward Tomasz Napierala {
237321b17ecSEdward Tomasz Napierala struct icl_module *im;
238009ea47eSEdward Tomasz Napierala
239321b17ecSEdward Tomasz Napierala sx_xlock(&sc->sc_lock);
240b8911594SEdward Tomasz Napierala im = icl_find(offload, iser, true);
241321b17ecSEdward Tomasz Napierala if (im != NULL) {
242321b17ecSEdward Tomasz Napierala ICL_WARN("offload \"%s\" already registered", offload);
243321b17ecSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock);
244321b17ecSEdward Tomasz Napierala return (EBUSY);
245009ea47eSEdward Tomasz Napierala }
246009ea47eSEdward Tomasz Napierala
247321b17ecSEdward Tomasz Napierala im = malloc(sizeof(*im), M_ICL, M_ZERO | M_WAITOK);
248321b17ecSEdward Tomasz Napierala im->im_name = strdup(offload, M_ICL);
249b8911594SEdward Tomasz Napierala im->im_iser = iser;
250321b17ecSEdward Tomasz Napierala im->im_priority = priority;
251321b17ecSEdward Tomasz Napierala im->im_limits = limits;
252321b17ecSEdward Tomasz Napierala im->im_new_conn = new_conn;
253009ea47eSEdward Tomasz Napierala
254321b17ecSEdward Tomasz Napierala TAILQ_INSERT_HEAD(&sc->sc_modules, im, im_next);
255321b17ecSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock);
256009ea47eSEdward Tomasz Napierala
257321b17ecSEdward Tomasz Napierala ICL_DEBUG("offload \"%s\" registered", offload);
258009ea47eSEdward Tomasz Napierala return (0);
259009ea47eSEdward Tomasz Napierala }
260009ea47eSEdward Tomasz Napierala
261009ea47eSEdward Tomasz Napierala int
icl_unregister(const char * offload,bool rdma)262b8911594SEdward Tomasz Napierala icl_unregister(const char *offload, bool rdma)
263009ea47eSEdward Tomasz Napierala {
264321b17ecSEdward Tomasz Napierala struct icl_module *im;
265009ea47eSEdward Tomasz Napierala
266321b17ecSEdward Tomasz Napierala sx_xlock(&sc->sc_lock);
267b8911594SEdward Tomasz Napierala im = icl_find(offload, rdma, true);
268321b17ecSEdward Tomasz Napierala if (im == NULL) {
269321b17ecSEdward Tomasz Napierala ICL_WARN("offload \"%s\" not registered", offload);
270321b17ecSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock);
271321b17ecSEdward Tomasz Napierala return (ENXIO);
272009ea47eSEdward Tomasz Napierala }
273009ea47eSEdward Tomasz Napierala
274321b17ecSEdward Tomasz Napierala TAILQ_REMOVE(&sc->sc_modules, im, im_next);
275321b17ecSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock);
276009ea47eSEdward Tomasz Napierala
277321b17ecSEdward Tomasz Napierala free(im->im_name, M_ICL);
278321b17ecSEdward Tomasz Napierala free(im, M_ICL);
279321b17ecSEdward Tomasz Napierala
280321b17ecSEdward Tomasz Napierala ICL_DEBUG("offload \"%s\" unregistered", offload);
281321b17ecSEdward Tomasz Napierala return (0);
282009ea47eSEdward Tomasz Napierala }
283009ea47eSEdward Tomasz Napierala
284321b17ecSEdward Tomasz Napierala static int
icl_load(void)285321b17ecSEdward Tomasz Napierala icl_load(void)
286009ea47eSEdward Tomasz Napierala {
287009ea47eSEdward Tomasz Napierala
288321b17ecSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ICL, M_ZERO | M_WAITOK);
289321b17ecSEdward Tomasz Napierala sx_init(&sc->sc_lock, "icl");
290321b17ecSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_modules);
2916ed8f5d2SEdward Tomasz Napierala
292321b17ecSEdward Tomasz Napierala return (0);
293009ea47eSEdward Tomasz Napierala }
294009ea47eSEdward Tomasz Napierala
295009ea47eSEdward Tomasz Napierala static int
icl_unload(void)296009ea47eSEdward Tomasz Napierala icl_unload(void)
297009ea47eSEdward Tomasz Napierala {
298009ea47eSEdward Tomasz Napierala
299321b17ecSEdward Tomasz Napierala sx_slock(&sc->sc_lock);
300321b17ecSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&sc->sc_modules), ("still have modules"));
301321b17ecSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock);
302009ea47eSEdward Tomasz Napierala
303321b17ecSEdward Tomasz Napierala sx_destroy(&sc->sc_lock);
304321b17ecSEdward Tomasz Napierala free(sc, M_ICL);
305009ea47eSEdward Tomasz Napierala
306009ea47eSEdward Tomasz Napierala return (0);
307009ea47eSEdward Tomasz Napierala }
308009ea47eSEdward Tomasz Napierala
309009ea47eSEdward Tomasz Napierala static int
icl_modevent(module_t mod,int what,void * arg)310009ea47eSEdward Tomasz Napierala icl_modevent(module_t mod, int what, void *arg)
311009ea47eSEdward Tomasz Napierala {
312009ea47eSEdward Tomasz Napierala
313009ea47eSEdward Tomasz Napierala switch (what) {
314009ea47eSEdward Tomasz Napierala case MOD_LOAD:
315321b17ecSEdward Tomasz Napierala return (icl_load());
316009ea47eSEdward Tomasz Napierala case MOD_UNLOAD:
317009ea47eSEdward Tomasz Napierala return (icl_unload());
318009ea47eSEdward Tomasz Napierala default:
319009ea47eSEdward Tomasz Napierala return (EINVAL);
320009ea47eSEdward Tomasz Napierala }
321009ea47eSEdward Tomasz Napierala }
322009ea47eSEdward Tomasz Napierala
323009ea47eSEdward Tomasz Napierala moduledata_t icl_data = {
324009ea47eSEdward Tomasz Napierala "icl",
325009ea47eSEdward Tomasz Napierala icl_modevent,
326009ea47eSEdward Tomasz Napierala 0
327009ea47eSEdward Tomasz Napierala };
328009ea47eSEdward Tomasz Napierala
329009ea47eSEdward Tomasz Napierala DECLARE_MODULE(icl, icl_data, SI_SUB_DRIVERS, SI_ORDER_FIRST);
330009ea47eSEdward Tomasz Napierala MODULE_VERSION(icl, 1);
331