2 * Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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 AUTHORS 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 AUTHORS 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
33 #include <sys/param.h>
36 #include <sys/endian.h>
37 #include <sys/socket.h>
38 #include <sys/linker.h>
39 #include <sys/module.h>
40 #include <netinet/in.h>
41 #include <netinet/tcp.h>
42 #include <arpa/inet.h>
56 #include <geom/gate/g_gate.h>
60 int g_gate_devfd = -1;
61 int g_gate_verbose = 0;
65 g_gate_vlog(int priority, const char *message, va_list ap)
91 printf("%s: ", prefix);
95 if (priority != LOG_DEBUG)
96 vsyslog(priority, message, ap);
101 g_gate_log(int priority, const char *message, ...)
105 va_start(ap, message);
106 g_gate_vlog(priority, message, ap);
111 g_gate_xvlog(const char *message, va_list ap)
114 g_gate_vlog(LOG_ERR, message, ap);
115 g_gate_vlog(LOG_ERR, "Exiting.", ap);
120 g_gate_xlog(const char *message, ...)
124 va_start(ap, message);
125 g_gate_xvlog(message, ap);
132 g_gate_mediasize(int fd)
137 if (fstat(fd, &sb) == -1)
138 g_gate_xlog("fstat(): %s.", strerror(errno));
139 if (S_ISCHR(sb.st_mode)) {
140 if (ioctl(fd, DIOCGMEDIASIZE, &mediasize) == -1) {
141 g_gate_xlog("Can't get media size: %s.",
144 } else if (S_ISREG(sb.st_mode)) {
145 mediasize = sb.st_size;
147 g_gate_xlog("Unsupported file system object.");
153 g_gate_sectorsize(int fd)
158 if (fstat(fd, &sb) == -1)
159 g_gate_xlog("fstat(): %s.", strerror(errno));
160 if (S_ISCHR(sb.st_mode)) {
161 if (ioctl(fd, DIOCGSECTORSIZE, &secsize) == -1) {
162 g_gate_xlog("Can't get sector size: %s.",
165 } else if (S_ISREG(sb.st_mode)) {
168 g_gate_xlog("Unsupported file system object.");
174 g_gate_open_device(void)
177 g_gate_devfd = open("/dev/" G_GATE_CTL_NAME, O_RDWR, 0);
178 if (g_gate_devfd == -1)
179 err(EXIT_FAILURE, "open(/dev/%s)", G_GATE_CTL_NAME);
183 g_gate_close_device(void)
190 g_gate_ioctl(unsigned long req, void *data)
193 if (ioctl(g_gate_devfd, req, data) == -1) {
194 g_gate_xlog("%s: ioctl(/dev/%s): %s.", getprogname(),
195 G_GATE_CTL_NAME, strerror(errno));
200 g_gate_destroy(int unit, int force)
202 struct g_gate_ctl_destroy ggio;
204 ggio.gctl_version = G_GATE_VERSION;
205 ggio.gctl_unit = unit;
206 ggio.gctl_force = force;
207 g_gate_ioctl(G_GATE_CMD_DESTROY, &ggio);
211 g_gate_load_module(void)
214 if (modfind("g_gate") == -1) {
215 /* Not present in kernel, try loading it. */
216 if (kldload("geom_gate") == -1 || modfind("g_gate") == -1) {
217 if (errno != EEXIST) {
219 "geom_gate module not available!");
226 * When we send from ggatec packets larger than 32kB, performance drops
227 * significantly (eg. to 256kB/s over 1Gbit/s link). This is not a problem
228 * when data is send from ggated. I don't know why, so for now I limit
229 * size of packets send from ggatec to 32kB by defining MAX_SEND_SIZE
230 * in ggatec Makefile.
232 #ifndef MAX_SEND_SIZE
233 #define MAX_SEND_SIZE MAXPHYS
236 g_gate_send(int s, const void *buf, size_t len, int flags)
238 ssize_t done = 0, done2;
239 const unsigned char *p = buf;
242 done2 = send(s, p, MIN(len, MAX_SEND_SIZE), flags);
245 else if (done2 == -1) {
246 if (errno == EAGAIN) {
247 printf("%s: EAGAIN\n", __func__);
261 g_gate_recv(int s, void *buf, size_t len, int flags)
266 done = recv(s, buf, len, flags);
267 } while (done == -1 && errno == EAGAIN);
272 unsigned rcvbuf = G_GATE_RCVBUF;
273 unsigned sndbuf = G_GATE_SNDBUF;
276 g_gate_socket_settings(int sfd)
281 /* Socket settings. */
284 if (setsockopt(sfd, IPPROTO_TCP, TCP_NODELAY, &on,
286 g_gate_xlog("setsockopt() error: %s.", strerror(errno));
289 if (setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) == -1)
290 g_gate_xlog("setsockopt(SO_REUSEADDR): %s.", strerror(errno));
292 if (setsockopt(sfd, SOL_SOCKET, SO_RCVBUF, &bsize, sizeof(bsize)) == -1)
293 g_gate_xlog("setsockopt(SO_RCVBUF): %s.", strerror(errno));
295 if (setsockopt(sfd, SOL_SOCKET, SO_SNDBUF, &bsize, sizeof(bsize)) == -1)
296 g_gate_xlog("setsockopt(SO_SNDBUF): %s.", strerror(errno));
299 if (setsockopt(sfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)) == -1) {
300 g_gate_log(LOG_ERR, "setsockopt(SO_SNDTIMEO) error: %s.",
303 if (setsockopt(sfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) == -1) {
304 g_gate_log(LOG_ERR, "setsockopt(SO_RCVTIMEO) error: %s.",
310 static struct gclass *
311 find_class(struct gmesh *mesh, const char *name)
313 struct gclass *class;
315 LIST_FOREACH(class, &mesh->lg_class, lg_class) {
316 if (strcmp(class->lg_name, name) == 0)
323 get_conf(struct ggeom *gp, const char *name)
325 struct gconfig *conf;
327 LIST_FOREACH(conf, &gp->lg_config, lg_config) {
328 if (strcmp(conf->lg_name, name) == 0)
329 return (conf->lg_val);
335 show_config(struct ggeom *gp, int verbose)
337 struct gprovider *pp;
340 pp = LIST_FIRST(&gp->lg_provider);
344 printf("%s\n", pp->lg_name);
347 printf(" NAME: %s\n", pp->lg_name);
348 printf(" info: %s\n", get_conf(gp, "info"));
349 printf(" access: %s\n", get_conf(gp, "access"));
350 printf(" timeout: %s\n", get_conf(gp, "timeout"));
351 printf("queue_count: %s\n", get_conf(gp, "queue_count"));
352 printf(" queue_size: %s\n", get_conf(gp, "queue_size"));
353 printf(" references: %s\n", get_conf(gp, "ref"));
354 humanize_number(buf, sizeof(buf), (int64_t)pp->lg_mediasize, "",
355 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL);
356 printf(" mediasize: %jd (%s)\n", (intmax_t)pp->lg_mediasize, buf);
357 printf(" sectorsize: %u\n", pp->lg_sectorsize);
358 printf(" mode: %s\n", pp->lg_mode);
363 g_gate_list(int unit, int verbose)
366 struct gclass *class;
371 error = geom_gettree(&mesh);
374 class = find_class(&mesh, G_GATE_CLASS_NAME);
376 geom_deletetree(&mesh);
380 snprintf(name, sizeof(name), "%s%d", G_GATE_PROVIDER_NAME,
383 LIST_FOREACH(gp, &class->lg_geom, lg_geom) {
384 if (unit != -1 && strcmp(gp->lg_name, name) != 0)
386 show_config(gp, verbose);
388 geom_deletetree(&mesh);
394 g_gate_str2ip(const char *str)
400 if (ip != INADDR_NONE) {
401 /* It is a valid IP address. */
404 /* Check if it is a valid host name. */
405 hp = gethostbyname(str);
407 return (INADDR_NONE);
408 return (((struct in_addr *)(void *)hp->h_addr)->s_addr);