Lines Matching defs:*
2 * m_police.c Parse/print policing module options.
4 * This program is free software; you can u32istribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 * FIXES: 19990619 - J Hadi Salim (hadi@cyberus.ca)
11 * simple addattr packaging fix.
12 * 2002: J Hadi Salim - Add tc action extensions syntax
16 #include <stdio.h>
17 #include <stdlib.h>
18 #include <unistd.h>
19 #include <syslog.h>
20 #include <fcntl.h>
21 #include <sys/socket.h>
22 #include <netinet/in.h>
23 #include <arpa/inet.h>
24 #include <string.h>
26 #include "utils.h"
27 #include "tc_util.h"
29 struct action_util police_action_util = {
30 .id = "police",
31 .parse_aopt = act_parse_police,
32 .print_aopt = print_police,
35 static void explain(void)
37 fprintf(stderr, "Usage: ... police rate BPS burst BYTES[/BYTES] [ mtu BYTES[/BYTES] ]\n");
38 fprintf(stderr, " [ peakrate BPS ] [ avrate BPS ]\n");
39 fprintf(stderr, " [ ACTIONTERM ]\n");
40 fprintf(stderr, "Old Syntax ACTIONTERM := action <EXCEEDACT>[/NOTEXCEEDACT] \n");
41 fprintf(stderr, "New Syntax ACTIONTERM := conform-exceed <EXCEEDACT>[/NOTEXCEEDACT] \n");
42 fprintf(stderr, "Where: *EXCEEDACT := pipe | ok | reclassify | drop | continue \n");
43 fprintf(stderr, "Where: pipe is only valid for new syntax \n");
46 static void explain1(char *arg)
48 fprintf(stderr, "Illegal \"%s\"\n", arg);
51 #define usage() return(-1)
54 char *police_action_n2a(int action, char *buf, int len)
56 switch (action) {
57 case -1:
58 return "continue";
59 break;
60 case TC_POLICE_OK:
61 return "pass";
62 break;
63 case TC_POLICE_SHOT:
64 return "drop";
65 break;
66 case TC_POLICE_RECLASSIFY:
67 return "reclassify";
68 case TC_POLICE_PIPE:
69 return "pipe";
70 default:
71 snprintf(buf, len, "%d", action);
72 return buf;
76 int police_action_a2n(char *arg, int *result)
78 int res;
80 if (matches(arg, "continue") == 0)
81 res = -1;
82 else if (matches(arg, "drop") == 0)
83 res = TC_POLICE_SHOT;
84 else if (matches(arg, "shot") == 0)
85 res = TC_POLICE_SHOT;
86 else if (matches(arg, "pass") == 0)
87 res = TC_POLICE_OK;
88 else if (strcmp(arg, "ok") == 0)
89 res = TC_POLICE_OK;
90 else if (matches(arg, "reclassify") == 0)
91 res = TC_POLICE_RECLASSIFY;
92 else if (matches(arg, "pipe") == 0)
93 res = TC_POLICE_PIPE;
94 else {
95 char dummy;
96 if (sscanf(arg, "%d%c", &res, &dummy) != 1)
97 return -1;
99 *result = res;
100 return 0;
104 int get_police_result(int *action, int *result, char *arg)
106 char *p = strchr(arg, '/');
108 if (p)
109 *p = 0;
111 if (police_action_a2n(arg, action)) {
112 if (p)
113 *p = '/';
114 return -1;
117 if (p) {
118 *p = '/';
119 if (police_action_a2n(p+1, result))
120 return -1;
122 return 0;
126 int act_parse_police(struct action_util *a,int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n)
128 int argc = *argc_p;
129 char **argv = *argv_p;
130 int res = -1;
131 int ok=0;
132 struct tc_police p;
133 __u32 rtab[256];
134 __u32 ptab[256];
135 __u32 avrate = 0;
136 int presult = 0;
137 unsigned buffer=0, mtu=0, mpu=0;
138 int Rcell_log=-1, Pcell_log = -1;
139 struct rtattr *tail;
141 memset(&p, 0, sizeof(p));
142 p.action = TC_POLICE_RECLASSIFY;
144 if (a) /* new way of doing things */
145 NEXT_ARG();
147 if (argc <= 0)
148 return -1;
150 while (argc > 0) {
152 if (matches(*argv, "index") == 0) {
153 NEXT_ARG();
154 if (get_u32(&p.index, *argv, 10)) {
155 fprintf(stderr, "Illegal \"index\"\n");
156 return -1;
158 } else if (matches(*argv, "burst") == 0 ||
159 strcmp(*argv, "buffer") == 0 ||
160 strcmp(*argv, "maxburst") == 0) {
161 NEXT_ARG();
162 if (buffer) {
163 fprintf(stderr, "Double \"buffer/burst\" spec\n");
164 return -1;
166 if (get_size_and_cell(&buffer, &Rcell_log, *argv) < 0) {
167 explain1("buffer");
168 return -1;
170 } else if (strcmp(*argv, "mtu") == 0 ||
171 strcmp(*argv, "minburst") == 0) {
172 NEXT_ARG();
173 if (mtu) {
174 fprintf(stderr, "Double \"mtu/minburst\" spec\n");
175 return -1;
177 if (get_size_and_cell(&mtu, &Pcell_log, *argv) < 0) {
178 explain1("mtu");
179 return -1;
181 } else if (strcmp(*argv, "mpu") == 0) {
182 NEXT_ARG();
183 if (mpu) {
184 fprintf(stderr, "Double \"mpu\" spec\n");
185 return -1;
187 if (get_size(&mpu, *argv)) {
188 explain1("mpu");
189 return -1;
191 } else if (strcmp(*argv, "rate") == 0) {
192 NEXT_ARG();
193 if (p.rate.rate) {
194 fprintf(stderr, "Double \"rate\" spec\n");
195 return -1;
197 if (get_rate(&p.rate.rate, *argv)) {
198 explain1("rate");
199 return -1;
201 } else if (strcmp(*argv, "avrate") == 0) {
202 NEXT_ARG();
203 if (avrate) {
204 fprintf(stderr, "Double \"avrate\" spec\n");
205 return -1;
207 if (get_rate(&avrate, *argv)) {
208 explain1("avrate");
209 return -1;
211 } else if (matches(*argv, "peakrate") == 0) {
212 NEXT_ARG();
213 if (p.peakrate.rate) {
214 fprintf(stderr, "Double \"peakrate\" spec\n");
215 return -1;
217 if (get_rate(&p.peakrate.rate, *argv)) {
218 explain1("peakrate");
219 return -1;
221 } else if (matches(*argv, "reclassify") == 0) {
222 p.action = TC_POLICE_RECLASSIFY;
223 } else if (matches(*argv, "drop") == 0 ||
224 matches(*argv, "shot") == 0) {
225 p.action = TC_POLICE_SHOT;
226 } else if (matches(*argv, "continue") == 0) {
227 p.action = TC_POLICE_UNSPEC;
228 } else if (matches(*argv, "pass") == 0) {
229 p.action = TC_POLICE_OK;
230 } else if (matches(*argv, "pipe") == 0) {
231 p.action = TC_POLICE_PIPE;
232 } else if (strcmp(*argv, "conform-exceed") == 0) {
233 NEXT_ARG();
234 if (get_police_result(&p.action, &presult, *argv)) {
235 fprintf(stderr, "Illegal \"action\"\n");
236 return -1;
238 } else if (strcmp(*argv, "help") == 0) {
239 explain();
240 return -1;
241 } else {
242 break;
244 ok++;
245 argc--; argv++;
248 if (!ok)
249 return -1;
251 if (p.rate.rate && !buffer) {
252 fprintf(stderr, "\"burst\" requires \"rate\".\n");
253 return -1;
255 if (p.peakrate.rate) {
256 if (!p.rate.rate) {
257 fprintf(stderr, "\"peakrate\" requires \"rate\".\n");
258 return -1;
260 if (!mtu) {
261 fprintf(stderr, "\"mtu\" is required, if \"peakrate\" is requested.\n");
262 return -1;
266 if (p.rate.rate) {
267 if ((Rcell_log = tc_calc_rtable(p.rate.rate, rtab, Rcell_log, mtu, mpu)) < 0) {
268 fprintf(stderr, "TBF: failed to calculate rate table.\n");
269 return -1;
271 p.burst = tc_calc_xmittime(p.rate.rate, buffer);
272 p.rate.cell_log = Rcell_log;
273 p.rate.mpu = mpu;
275 p.mtu = mtu;
276 if (p.peakrate.rate) {
277 if ((Pcell_log = tc_calc_rtable(p.peakrate.rate, ptab, Pcell_log, mtu, mpu)) < 0) {
278 fprintf(stderr, "POLICE: failed to calculate peak rate table.\n");
279 return -1;
281 p.peakrate.cell_log = Pcell_log;
282 p.peakrate.mpu = mpu;
285 tail = NLMSG_TAIL(n);
286 addattr_l(n, MAX_MSG, tca_id, NULL, 0);
287 addattr_l(n, MAX_MSG, TCA_POLICE_TBF, &p, sizeof(p));
288 if (p.rate.rate)
289 addattr_l(n, MAX_MSG, TCA_POLICE_RATE, rtab, 1024);
290 if (p.peakrate.rate)
291 addattr_l(n, MAX_MSG, TCA_POLICE_PEAKRATE, ptab, 1024);
292 if (avrate)
293 addattr32(n, MAX_MSG, TCA_POLICE_AVRATE, avrate);
294 if (presult)
295 addattr32(n, MAX_MSG, TCA_POLICE_RESULT, presult);
297 tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
298 res = 0;
300 *argc_p = argc;
301 *argv_p = argv;
302 return res;
305 int parse_police(int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n)
307 return act_parse_police(NULL,argc_p,argv_p,tca_id,n);
310 int
311 print_police(struct action_util *a, FILE *f, struct rtattr *arg)
313 SPRINT_BUF(b1);
314 struct tc_police *p;
315 struct rtattr *tb[TCA_POLICE_MAX+1];
316 unsigned buffer;
318 if (arg == NULL)
319 return 0;
321 parse_rtattr_nested(tb, TCA_POLICE_MAX, arg);
323 if (tb[TCA_POLICE_TBF] == NULL) {
324 fprintf(f, "[NULL police tbf]");
325 return 0;
327 #ifndef STOOPID_8BYTE
328 if (RTA_PAYLOAD(tb[TCA_POLICE_TBF]) < sizeof(*p)) {
329 fprintf(f, "[truncated police tbf]");
330 return -1;
332 #endif
333 p = RTA_DATA(tb[TCA_POLICE_TBF]);
335 fprintf(f, " police 0x%x ", p->index);
336 fprintf(f, "rate %s ", sprint_rate(p->rate.rate, b1));
337 buffer = ((double)p->rate.rate*tc_core_tick2usec(p->burst))/1000000;
338 fprintf(f, "burst %s ", sprint_size(buffer, b1));
339 fprintf(f, "mtu %s ", sprint_size(p->mtu, b1));
340 if (show_raw)
341 fprintf(f, "[%08x] ", p->burst);
342 if (p->peakrate.rate)
343 fprintf(f, "peakrate %s ", sprint_rate(p->peakrate.rate, b1));
344 if (tb[TCA_POLICE_AVRATE])
345 fprintf(f, "avrate %s ", sprint_rate(*(__u32*)RTA_DATA(tb[TCA_POLICE_AVRATE]), b1));
346 fprintf(f, "action %s", police_action_n2a(p->action, b1, sizeof(b1)));
347 if (tb[TCA_POLICE_RESULT]) {
348 fprintf(f, "/%s ", police_action_n2a(*(int*)RTA_DATA(tb[TCA_POLICE_RESULT]), b1, sizeof(b1)));
349 } else
350 fprintf(f, " ");
351 fprintf(f, "\nref %d bind %d\n",p->refcnt, p->bindcnt);
353 return 0;
356 int
357 tc_print_police(FILE *f, struct rtattr *arg) {
358 return print_police(&police_action_util,f,arg);