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[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / net / skfp / smtparse.c
blobd5779e414dbe2392fc6dfec57bb24f82c5fd86ac
1 /******************************************************************************
2 *
3 * (C)Copyright 1998,1999 SysKonnect,
4 * a business unit of Schneider & Koch & Co. Datensysteme GmbH.
5 *
6 * See the file "skfddi.c" for further information.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * The information in this file is provided "AS IS" without warranty.
14 *
15 ******************************************************************************/
16
17
18 /*
19 parser for SMT parameters
20 */
21
22 #include "h/types.h"
23 #include "h/fddi.h"
24 #include "h/smc.h"
25 #include "h/smt_p.h"
26
27 #define KERNEL
28 #include "h/smtstate.h"
29
30 #ifndef lint
31 static const char ID_sccs[] = "@(#)smtparse.c 1.12 98/10/06 (C) SK " ;
32 #endif
33
34 #ifdef sun
35 #define _far
36 #endif
37
38 /*
39 * convert to BCLK units
40 */
41 #define MS2BCLK(x) ((x)*12500L)
42 #define US2BCLK(x) ((x/10)*125L)
43
44 /*
45 * parameter table
46 */
47 static struct s_ptab {
48 char *pt_name ;
49 u_short pt_num ;
50 u_short pt_type ;
51 u_long pt_min ;
52 u_long pt_max ;
53 } ptab[] = {
54 { "PMFPASSWD",0, 0 } ,
55 { "USERDATA",1, 0 } ,
56 { "LERCUTOFFA",2, 1, 4, 15 } ,
57 { "LERCUTOFFB",3, 1, 4, 15 } ,
58 { "LERALARMA",4, 1, 4, 15 } ,
59 { "LERALARMB",5, 1, 4, 15 } ,
60 { "TMAX",6, 1, 5, 165 } ,
61 { "TMIN",7, 1, 5, 165 } ,
62 { "TREQ",8, 1, 5, 165 } ,
63 { "TVX",9, 1, 2500, 10000 } ,
64 #ifdef ESS
65 { "SBAPAYLOAD",10, 1, 0, 1562 } ,
66 { "SBAOVERHEAD",11, 1, 50, 5000 } ,
67 { "MAXTNEG",12, 1, 5, 165 } ,
68 { "MINSEGMENTSIZE",13, 1, 0, 4478 } ,
69 { "SBACATEGORY",14, 1, 0, 0xffff } ,
70 { "SYNCHTXMODE",15, 0 } ,
71 #endif
72 #ifdef SBA
73 { "SBACOMMAND",16, 0 } ,
74 { "SBAAVAILABLE",17, 1, 0, 100 } ,
75 #endif
76 { NULL }
77 } ;
78
79 /* Define maximum string size for values and keybuffer */
80 #define MAX_VAL 40
81
82 /*
83 * local function declarations
84 */
85 static u_long parse_num(int type, char _far *value, char *v, u_long mn,
86 u_long mx, int scale);
87 static int parse_word(char *buf, char _far *text);
88
89 #ifdef SIM
90 #define DB_MAIN(a,b,c) printf(a,b,c)
91 #else
92 #define DB_MAIN(a,b,c)
93 #endif
94
95 /*
96 * BEGIN_MANUAL_ENTRY()
97 *
98 * int smt_parse_arg(struct s_smc *,char _far *keyword,int type,
99 char _far *value)
100 *
101 * parse SMT parameter
102 * *keyword
103 * pointer to keyword, must be \0, \n or \r terminated
104 * *value pointer to value, either char * or u_long *
105 * if char *
106 * pointer to value, must be \0, \n or \r terminated
107 * if u_long *
108 * contains binary value
109 *
110 * type 0: integer
111 * 1: string
112 * return
113 * 0 parameter parsed ok
114 * != 0 error
115 * NOTE:
116 * function can be called with DS != SS
117 *
118 *
119 * END_MANUAL_ENTRY()
120 */
121 int smt_parse_arg(struct s_smc *smc, char _far *keyword, int type,
122 char _far *value)
123 {
124 char keybuf[MAX_VAL+1];
125 char valbuf[MAX_VAL+1];
126 char c ;
127 char *p ;
128 char *v ;
129 char *d ;
130 u_long val = 0 ;
131 struct s_ptab *pt ;
132 int st ;
133 int i ;
134
135 /*
136 * parse keyword
137 */
138 if ((st = parse_word(keybuf,keyword)))
139 return(st) ;
140 /*
141 * parse value if given as string
142 */
143 if (type == 1) {
144 if ((st = parse_word(valbuf,value)))
145 return(st) ;
146 }
147 /*
148 * search in table
149 */
150 st = 0 ;
151 for (pt = ptab ; (v = pt->pt_name) ; pt++) {
152 for (p = keybuf ; (c = *p) ; p++,v++) {
153 if (c != *v)
154 break ;
155 }
156 if (!c && !*v)
157 break ;
158 }
159 if (!v)
160 return(-1) ;
161 #if 0
162 printf("=>%s<==>%s<=\n",pt->pt_name,valbuf) ;
163 #endif
164 /*
165 * set value in MIB
166 */
167 if (pt->pt_type)
168 val = parse_num(type,value,valbuf,pt->pt_min,pt->pt_max,1) ;
169 switch (pt->pt_num) {
170 case 0 :
171 v = valbuf ;
172 d = (char *) smc->mib.fddiPRPMFPasswd ;
173 for (i = 0 ; i < (signed)sizeof(smc->mib.fddiPRPMFPasswd) ; i++)
174 *d++ = *v++ ;
175 DB_MAIN("SET %s = %s\n",pt->pt_name,smc->mib.fddiPRPMFPasswd) ;
176 break ;
177 case 1 :
178 v = valbuf ;
179 d = (char *) smc->mib.fddiSMTUserData ;
180 for (i = 0 ; i < (signed)sizeof(smc->mib.fddiSMTUserData) ; i++)
181 *d++ = *v++ ;
182 DB_MAIN("SET %s = %s\n",pt->pt_name,smc->mib.fddiSMTUserData) ;
183 break ;
184 case 2 :
185 smc->mib.p[PA].fddiPORTLer_Cutoff = (u_char) val ;
186 DB_MAIN("SET %s = %d\n",
187 pt->pt_name,smc->mib.p[PA].fddiPORTLer_Cutoff) ;
188 break ;
189 case 3 :
190 smc->mib.p[PB].fddiPORTLer_Cutoff = (u_char) val ;
191 DB_MAIN("SET %s = %d\n",
192 pt->pt_name,smc->mib.p[PB].fddiPORTLer_Cutoff) ;
193 break ;
194 case 4 :
195 smc->mib.p[PA].fddiPORTLer_Alarm = (u_char) val ;
196 DB_MAIN("SET %s = %d\n",
197 pt->pt_name,smc->mib.p[PA].fddiPORTLer_Alarm) ;
198 break ;
199 case 5 :
200 smc->mib.p[PB].fddiPORTLer_Alarm = (u_char) val ;
201 DB_MAIN("SET %s = %d\n",
202 pt->pt_name,smc->mib.p[PB].fddiPORTLer_Alarm) ;
203 break ;
204 case 6 : /* TMAX */
205 DB_MAIN("SET %s = %d\n",pt->pt_name,val) ;
206 smc->mib.a[PATH0].fddiPATHT_MaxLowerBound =
207 (u_long) -MS2BCLK((long)val) ;
208 break ;
209 case 7 : /* TMIN */
210 DB_MAIN("SET %s = %d\n",pt->pt_name,val) ;
211 smc->mib.m[MAC0].fddiMACT_Min =
212 (u_long) -MS2BCLK((long)val) ;
213 break ;
214 case 8 : /* TREQ */
215 DB_MAIN("SET %s = %d\n",pt->pt_name,val) ;
216 smc->mib.a[PATH0].fddiPATHMaxT_Req =
217 (u_long) -MS2BCLK((long)val) ;
218 break ;
219 case 9 : /* TVX */
220 DB_MAIN("SET %s = %d \n",pt->pt_name,val) ;
221 smc->mib.a[PATH0].fddiPATHTVXLowerBound =
222 (u_long) -US2BCLK((long)val) ;
223 break ;
224 #ifdef ESS
225 case 10 : /* SBAPAYLOAD */
226 DB_MAIN("SET %s = %d\n",pt->pt_name,val) ;
227 if (smc->mib.fddiESSPayload != val) {
228 smc->ess.raf_act_timer_poll = TRUE ;
229 smc->mib.fddiESSPayload = val ;
230 }
231 break ;
232 case 11 : /* SBAOVERHEAD */
233 DB_MAIN("SET %s = %d\n",pt->pt_name,val) ;
234 smc->mib.fddiESSOverhead = val ;
235 break ;
236 case 12 : /* MAXTNEG */
237 DB_MAIN("SET %s = %d\n",pt->pt_name,val) ;
238 smc->mib.fddiESSMaxTNeg = (u_long) -MS2BCLK((long)val) ;
239 break ;
240 case 13 : /* MINSEGMENTSIZE */
241 DB_MAIN("SET %s = %d\n",pt->pt_name,val) ;
242 smc->mib.fddiESSMinSegmentSize = val ;
243 break ;
244 case 14 : /* SBACATEGORY */
245 DB_MAIN("SET %s = %d\n",pt->pt_name,val) ;
246 smc->mib.fddiESSCategory =
247 (smc->mib.fddiESSCategory & 0xffff) |
248 ((u_long)(val << 16)) ;
249 break ;
250 case 15 : /* SYNCHTXMODE */
251 /* do not use memcmp(valbuf,"ALL",3) because DS != SS */
252 if (valbuf[0] == 'A' && valbuf[1] == 'L' && valbuf[2] == 'L') {
253 smc->mib.fddiESSSynchTxMode = TRUE ;
254 DB_MAIN("SET %s = %s\n",pt->pt_name,valbuf) ;
255 }
256 /* if (!memcmp(valbuf,"SPLIT",5)) { */
257 if (valbuf[0] == 'S' && valbuf[1] == 'P' && valbuf[2] == 'L' &&
258 valbuf[3] == 'I' && valbuf[4] == 'T') {
259 DB_MAIN("SET %s = %s\n",pt->pt_name,valbuf) ;
260 smc->mib.fddiESSSynchTxMode = FALSE ;
261 }
262 break ;
263 #endif
264 #ifdef SBA
265 case 16 : /* SBACOMMAND */
266 /* if (!memcmp(valbuf,"START",5)) { */
267 if (valbuf[0] == 'S' && valbuf[1] == 'T' && valbuf[2] == 'A' &&
268 valbuf[3] == 'R' && valbuf[4] == 'T') {
269 DB_MAIN("SET %s = %s\n",pt->pt_name,valbuf) ;
270 smc->mib.fddiSBACommand = SB_START ;
271 }
272 /* if (!memcmp(valbuf,"STOP",4)) { */
273 if (valbuf[0] == 'S' && valbuf[1] == 'T' && valbuf[2] == 'O' &&
274 valbuf[3] == 'P') {
275 DB_MAIN("SET %s = %s\n",pt->pt_name,valbuf) ;
276 smc->mib.fddiSBACommand = SB_STOP ;
277 }
278 break ;
279 case 17 : /* SBAAVAILABLE */
280 DB_MAIN("SET %s = %d\n",pt->pt_name,val) ;
281 smc->mib.fddiSBAAvailable = (u_char) val ;
282 break ;
283 #endif
284 }
285 return(0) ;
286 }
287
288 static int parse_word(char *buf, char _far *text)
289 {
290 char c ;
291 char *p ;
292 int p_len ;
293 int quote ;
294 int i ;
295 int ok ;
296
297 /*
298 * skip leading white space
299 */
300 p = buf ;
301 for (i = 0 ; i < MAX_VAL ; i++)
302 *p++ = 0 ;
303 p = buf ;
304 p_len = 0 ;
305 ok = 0 ;
306 while ( (c = *text++) && (c != '\n') && (c != '\r')) {
307 if ((c != ' ') && (c != '\t')) {
308 ok = 1 ;
309 break ;
310 }
311 }
312 if (!ok)
313 return(-1) ;
314 if (c == '"') {
315 quote = 1 ;
316 }
317 else {
318 quote = 0 ;
319 text-- ;
320 }
321 /*
322 * parse valbuf
323 */
324 ok = 0 ;
325 while (!ok && p_len < MAX_VAL-1 && (c = *text++) && (c != '\n')
326 && (c != '\r')) {
327 switch (quote) {
328 case 0 :
329 if ((c == ' ') || (c == '\t') || (c == '=')) {
330 ok = 1 ;
331 break ;
332 }
333 *p++ = c ;
334 p_len++ ;
335 break ;
336 case 2 :
337 *p++ = c ;
338 p_len++ ;
339 quote = 1 ;
340 break ;
341 case 1 :
342 switch (c) {
343 case '"' :
344 ok = 1 ;
345 break ;
346 case '\\' :
347 quote = 2 ;
348 break ;
349 default :
350 *p++ = c ;
351 p_len++ ;
352 }
353 }
354 }
355 *p++ = 0 ;
356 for (p = buf ; (c = *p) ; p++) {
357 if (c >= 'a' && c <= 'z')
358 *p = c + 'A' - 'a' ;
359 }
360 return(0) ;
361 }
362
363 static u_long parse_num(int type, char _far *value, char *v, u_long mn,
364 u_long mx, int scale)
365 {
366 u_long x = 0 ;
367 char c ;
368
369 if (type == 0) { /* integer */
370 u_long _far *l ;
371 u_long u1 ;
372
373 l = (u_long _far *) value ;
374 u1 = *l ;
375 /*
376 * if the value is negative take the lower limit
377 */
378 if ((long)u1 < 0) {
379 if (- ((long)u1) > (long) mx) {
380 u1 = 0 ;
381 }
382 else {
383 u1 = (u_long) - ((long)u1) ;
384 }
385 }
386 x = u1 ;
387 }
388 else { /* string */
389 int sign = 0 ;
390
391 if (*v == '-') {
392 sign = 1 ;
393 }
394 while ((c = *v++) && (c >= '0') && (c <= '9')) {
395 x = x * 10 + c - '0' ;
396 }
397 if (scale == 10) {
398 x *= 10 ;
399 if (c == '.') {
400 if ((c = *v++) && (c >= '0') && (c <= '9')) {
401 x += c - '0' ;
402 }
403 }
404 }
405 if (sign)
406 x = (u_long) - ((long)x) ;
407 }
408 /*
409 * if the value is negative
410 * and the absolute value is outside the limits
411 * take the lower limit
412 * else
413 * take the absoute value
414 */
415 if ((long)x < 0) {
416 if (- ((long)x) > (long) mx) {
417 x = 0 ;
418 }
419 else {
420 x = (u_long) - ((long)x) ;
421 }
422 }
423 if (x < mn)
424 return(mn) ;
425 else if (x > mx)
426 return(mx) ;
427 return(x) ;
428 }
429
430 #if 0
431 struct s_smc SMC ;
432 main()
433 {
434 char *p ;
435 char *v ;
436 char buf[100] ;
437 int toggle = 0 ;
438
439 while (gets(buf)) {
440 p = buf ;
441 while (*p && ((*p == ' ') || (*p == '\t')))
442 p++ ;
443
444 while (*p && ((*p != ' ') && (*p != '\t')))
445 p++ ;
446
447 v = p ;
448 while (*v && ((*v == ' ') || (*v == '\t')))
449 v++ ;
450 if ((*v >= '0') && (*v <= '9')) {
451 toggle = !toggle ;
452 if (toggle) {
453 u_long l ;
454 l = atol(v) ;
455 smt_parse_arg(&SMC,buf,0,(char _far *)&l) ;
456 }
457 else
458 smt_parse_arg(&SMC,buf,1,(char _far *)p) ;
459 }
460 else {
461 smt_parse_arg(&SMC,buf,1,(char _far *)p) ;
462 }
463 }
464 exit(0) ;
465 }
466 #endif
467
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