1 /* $NetBSD: qop_blue.c,v 1.5 2002/03/05 04:11:53 itojun Exp $ */
2 /* $KAME: qop_blue.c,v 1.6 2001/12/03 08:20:55 kjc Exp $ */
3 /*
4 * Copyright (C) 1999-2000
5 * Sony Computer Science Laboratories, Inc. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/socket.h>
31 #include <sys/sockio.h>
32 #include <sys/ioctl.h>
33 #include <sys/fcntl.h>
34 #include <net/if.h>
35 #include <netinet/in.h>
36 #include <arpa/inet.h>
37
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <unistd.h>
41 #include <stddef.h>
42 #include <string.h>
43 #include <ctype.h>
44 #include <errno.h>
45 #include <syslog.h>
46 #include <netdb.h>
47
48 #include <altq/altq.h>
49 #include <altq/altq_blue.h>
50 #include "altq_qop.h"
51 #include "qop_blue.h"
52
53 static int blue_attach(struct ifinfo *);
54 static int blue_detach(struct ifinfo *);
55 static int blue_enable(struct ifinfo *);
56 static int blue_disable(struct ifinfo *);
57
58 #define BLUE_DEVICE "/dev/altq/blue"
59
60 static int blue_fd = -1;
61 static int blue_refcount = 0;
62
63 static struct qdisc_ops blue_qdisc = {
64 ALTQT_BLUE,
65 "blue",
66 blue_attach,
67 blue_detach,
68 NULL, /* clear */
69 blue_enable,
70 blue_disable,
71 NULL, /* add class */
72 NULL, /* modify class */
73 NULL, /* delete class */
74 NULL, /* add filter */
75 NULL /* delete filter */
76 };
77
78 /*
79 * parser interface
80 */
81 #define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
82
83 int
blue_interface_parser(const char * ifname,int argc,char ** argv)84 blue_interface_parser(const char *ifname, int argc, char **argv)
85 {
86 u_int bandwidth = 100000000; /* 100Mbps */
87 u_int tbrsize = 0;
88 int max_pmark = 4000;
89 int hold_time = 1000;
90 int qlimit = 60;
91 int pkttime = 0;
92 int flags = 0;
93 int packet_size = 1000;
94
95 /*
96 * process options
97 */
98 while (argc > 0) {
99 if (EQUAL(*argv, "bandwidth")) {
100 argc--; argv++;
101 if (argc > 0)
102 bandwidth = atobps(*argv);
103 } else if (EQUAL(*argv, "tbrsize")) {
104 argc--; argv++;
105 if (argc > 0)
106 tbrsize = atobytes(*argv);
107 } else if (EQUAL(*argv, "packetsize")) {
108 argc--; argv++;
109 if (argc > 0)
110 packet_size = atobytes(*argv);
111 } else if (EQUAL(*argv, "qlimit")) {
112 argc--; argv++;
113 if (argc > 0)
114 qlimit = (int)strtol(*argv, NULL, 0);
115 } else if (EQUAL(*argv, "maxpmark")) {
116 argc--; argv++;
117 if (argc > 0)
118 max_pmark = (int)strtol(*argv, NULL, 0);
119 } else if (EQUAL(*argv, "holdtime")) {
120 argc--; argv++;
121 if (argc > 0)
122 hold_time = (int)strtol(*argv, NULL, 0);
123 } else if (EQUAL(*argv, "blue")) {
124 /* just skip */
125 } else if (EQUAL(*argv, "ecn")) {
126 flags |= BLUEF_ECN;
127 } else {
128 LOG(LOG_ERR, 0, "Unknown keyword '%s'", *argv);
129 return (0);
130 }
131 argc--; argv++;
132 }
133
134 if (qcmd_tbr_register(ifname, bandwidth, tbrsize) != 0)
135 return (0);
136
137 pkttime = packet_size * 8 * 1000 / (bandwidth / 1000);
138
139 if (qcmd_blue_add_if(ifname, bandwidth, max_pmark, hold_time,
140 qlimit, pkttime, flags) != 0)
141 return (0);
142 return (1);
143 }
144
145 /*
146 * qcmd api
147 */
148 int
qcmd_blue_add_if(const char * ifname,u_int bandwidth,int max_pmark,int hold_time,int qlimit,int pkttime,int flags)149 qcmd_blue_add_if(const char *ifname, u_int bandwidth, int max_pmark,
150 int hold_time, int qlimit, int pkttime, int flags)
151 {
152 int error;
153
154 error = qop_blue_add_if(NULL, ifname, bandwidth, max_pmark, hold_time,
155 qlimit, pkttime, flags);
156 if (error != 0)
157 LOG(LOG_ERR, errno, "%s: can't add blue on interface '%s'",
158 qoperror(error), ifname);
159 return (error);
160 }
161
162 /*
163 * qop api
164 */
165 int
qop_blue_add_if(struct ifinfo ** rp,const char * ifname,u_int bandwidth,int max_pmark,int hold_time,int qlimit,int pkttime,int flags)166 qop_blue_add_if(struct ifinfo **rp, const char *ifname, u_int bandwidth,
167 int max_pmark, int hold_time, int qlimit,
168 int pkttime, int flags)
169 {
170 struct ifinfo *ifinfo = NULL;
171 struct blue_ifinfo *blue_ifinfo;
172 int error;
173
174 if ((blue_ifinfo = calloc(1, sizeof(*blue_ifinfo))) == NULL)
175 return (QOPERR_NOMEM);
176 blue_ifinfo->max_pmark = max_pmark;
177 blue_ifinfo->hold_time = hold_time;
178 blue_ifinfo->qlimit = qlimit;
179 blue_ifinfo->pkttime = pkttime;
180 blue_ifinfo->flags = flags;
181
182 error = qop_add_if(&ifinfo, ifname, bandwidth,
183 &blue_qdisc, blue_ifinfo);
184 if (error != 0) {
185 free(blue_ifinfo);
186 return (error);
187 }
188
189 if (rp != NULL)
190 *rp = ifinfo;
191 return (0);
192 }
193
194 /*
195 * system call interfaces for qdisc_ops
196 */
197 static int
blue_attach(struct ifinfo * ifinfo)198 blue_attach(struct ifinfo *ifinfo)
199 {
200 struct blue_interface iface;
201 struct blue_ifinfo *blue_ifinfo;
202 struct blue_conf conf;
203
204 if (blue_fd < 0 &&
205 (blue_fd = open(BLUE_DEVICE, O_RDWR)) < 0 &&
206 (blue_fd = open_module(BLUE_DEVICE, O_RDWR)) < 0) {
207 LOG(LOG_ERR, errno, "BLUE open");
208 return (QOPERR_SYSCALL);
209 }
210
211 blue_refcount++;
212 memset(&iface, 0, sizeof(iface));
213 strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
214
215 if (ioctl(blue_fd, BLUE_IF_ATTACH, &iface) < 0)
216 return (QOPERR_SYSCALL);
217
218 /* set blue parameters */
219 blue_ifinfo = (struct blue_ifinfo *)ifinfo->private;
220 memset(&conf, 0, sizeof(conf));
221 strncpy(conf.iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
222 conf.blue_max_pmark = blue_ifinfo->max_pmark;
223 conf.blue_hold_time = blue_ifinfo->hold_time;
224 conf.blue_limit = blue_ifinfo->qlimit;
225 conf.blue_pkttime = blue_ifinfo->pkttime;
226 conf.blue_flags = blue_ifinfo->flags;
227 if (ioctl(blue_fd, BLUE_CONFIG, &conf) < 0)
228 return (QOPERR_SYSCALL);
229
230 #if 1
231 LOG(LOG_INFO, 0, "blue attached to %s", iface.blue_ifname);
232 #endif
233 return (0);
234 }
235
236 static int
blue_detach(struct ifinfo * ifinfo)237 blue_detach(struct ifinfo *ifinfo)
238 {
239 struct blue_interface iface;
240
241 memset(&iface, 0, sizeof(iface));
242 strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
243
244 if (ioctl(blue_fd, BLUE_IF_DETACH, &iface) < 0)
245 return (QOPERR_SYSCALL);
246
247 if (--blue_refcount == 0) {
248 close(blue_fd);
249 blue_fd = -1;
250 }
251 return (0);
252 }
253
254 static int
blue_enable(struct ifinfo * ifinfo)255 blue_enable(struct ifinfo *ifinfo)
256 {
257 struct blue_interface iface;
258
259 memset(&iface, 0, sizeof(iface));
260 strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
261
262 if (ioctl(blue_fd, BLUE_ENABLE, &iface) < 0)
263 return (QOPERR_SYSCALL);
264 return (0);
265 }
266
267 static int
blue_disable(struct ifinfo * ifinfo)268 blue_disable(struct ifinfo *ifinfo)
269 {
270 struct blue_interface iface;
271
272 memset(&iface, 0, sizeof(iface));
273 strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
274
275 if (ioctl(blue_fd, BLUE_DISABLE, &iface) < 0)
276 return (QOPERR_SYSCALL);
277 return (0);
278 }
279