xref: /f-stack/lib/ff_config.c (revision a1d3d0a7)
1 /*
2  * Copyright (C) 2017 THL A29 Limited, a Tencent company.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice, this
9  *   list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright notice,
11  *   this list of conditions and the following disclaimer in the documentation
12  *   and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
18  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
23  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  *
25  */
26 
27 #include <string.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <stdint.h>
31 #include <getopt.h>
32 #include <ctype.h>
33 #include <rte_config.h>
34 #include <rte_string_fns.h>
35 
36 #include "ff_config.h"
37 #include "ff_ini_parser.h"
38 
39 #define DEFAULT_CONFIG_FILE   "config.ini"
40 
41 #define BITS_PER_HEX 4
42 
43 struct ff_config ff_global_cfg;
44 int dpdk_argc;
45 char *dpdk_argv[DPDK_CONFIG_NUM + 1];
46 
47 char* const short_options = "c:t:p:";
48 struct option long_options[] = {
49     { "conf", 1, NULL, 'c'},
50     { "proc-type", 1, NULL, 't'},
51     { "proc-id", 1, NULL, 'p'},
52     { 0, 0, 0, 0},
53 };
54 
55 static int
56 xdigit2val(unsigned char c)
57 {
58     int val;
59 
60     if (isdigit(c))
61         val = c - '0';
62     else if (isupper(c))
63         val = c - 'A' + 10;
64     else
65         val = c - 'a' + 10;
66     return val;
67 }
68 
69 static int
70 parse_lcore_mask(struct ff_config *cfg, const char *coremask)
71 {
72     int i, j, idx = 0, shift = 0, zero_num = 0;
73     unsigned count = 0;
74     char c;
75     int val;
76     uint16_t *proc_lcore;
77     char buf[RTE_MAX_LCORE] = {0};
78     char zero[RTE_MAX_LCORE] = {0};
79 
80     if (coremask == NULL)
81         return 0;
82 
83     cfg->dpdk.proc_lcore = (uint16_t *)calloc(RTE_MAX_LCORE, sizeof(uint16_t));
84     if (cfg->dpdk.proc_lcore == NULL) {
85         fprintf(stderr, "parse_lcore_mask malloc failed\n");
86         return 0;
87     }
88     proc_lcore = cfg->dpdk.proc_lcore;
89 
90     /*
91      * Remove all blank characters ahead and after.
92      * Remove 0x/0X if exists.
93      */
94     while (isblank(*coremask))
95         coremask++;
96     if (coremask[0] == '0' && ((coremask[1] == 'x')
97         || (coremask[1] == 'X')))
98         coremask += 2;
99 
100     i = strlen(coremask);
101     while ((i > 0) && isblank(coremask[i - 1]))
102         i--;
103 
104     if (i == 0)
105         return 0;
106 
107     for (i = i - 1; i >= 0 && idx < RTE_MAX_LCORE; i--) {
108         c = coremask[i];
109         if (isxdigit(c) == 0) {
110             return 0;
111         }
112         val = xdigit2val(c);
113         for (j = 0; j < BITS_PER_HEX && idx < RTE_MAX_LCORE; j++, idx++) {
114             if ((1 << j) & val) {
115                 proc_lcore[count] = idx;
116                 if (cfg->dpdk.proc_id == count) {
117                     zero_num = idx >> 2;
118                     shift = idx & 0x3;
119                     memset(zero,'0',zero_num);
120                     snprintf(buf, sizeof(buf) - 1, "%llx%s",
121                         (unsigned long long)1<<shift, zero);
122                     cfg->dpdk.proc_mask = strdup(buf);
123 		}
124                 count++;
125             }
126         }
127     }
128 
129     for (; i >= 0; i--)
130         if (coremask[i] != '0')
131             return 0;
132 
133     if (cfg->dpdk.proc_id >= count)
134         return 0;
135 
136     cfg->dpdk.nb_procs = count;
137 
138     return 1;
139 }
140 
141 static int
142 is_integer(const char *s)
143 {
144     if (*s == '-' || *s == '+')
145         s++;
146     if (*s < '0' || '9' < *s)
147         return 0;
148     s++;
149     while ('0' <= *s && *s <= '9')
150         s++;
151     return (*s == '\0');
152 }
153 
154 static int
155 freebsd_conf_handler(struct ff_config *cfg, const char *section,
156     const char *name, const char *value)
157 {
158     struct ff_freebsd_cfg *newconf, **cur;
159     newconf = (struct ff_freebsd_cfg *)malloc(sizeof(struct ff_freebsd_cfg));
160     if (newconf == NULL) {
161         fprintf(stderr, "freebsd conf malloc failed\n");
162         return 0;
163     }
164 
165     newconf->name = strdup(name);
166     newconf->str = strdup(value);
167 
168     if (strcmp(section, "boot") == 0) {
169         cur = &cfg->freebsd.boot;
170 
171         newconf->value = (void *)newconf->str;
172         newconf->vlen = strlen(value);
173     } else if (strcmp(section, "sysctl") == 0) {
174         cur = &cfg->freebsd.sysctl;
175 
176         if (is_integer(value)) {
177             if (strcmp(name, "kern.ipc.maxsockbuf") == 0) {
178                 long *p = (long *)malloc(sizeof(long));
179                 *p = atol(value);
180                 newconf->value = (void *)p;
181                 newconf->vlen = sizeof(*p);
182             } else {
183                  int *p = (int *)malloc(sizeof(int));
184                  *p = atoi(value);
185                  newconf->value = (void *)p;
186                  newconf->vlen = sizeof(*p);
187             }
188         } else {
189             newconf->value = (void *)newconf->str;
190             newconf->vlen = strlen(value);
191         }
192     } else {
193         fprintf(stderr, "freebsd conf section[%s] error\n", section);
194         return 0;
195     }
196 
197     if (*cur == NULL) {
198         newconf->next = NULL;
199         *cur = newconf;
200     } else {
201         newconf->next = (*cur)->next;
202         (*cur)->next = newconf;
203     }
204 
205     return 1;
206 }
207 // A recursive binary search function. It returns location of x in
208 // given array arr[l..r] is present, otherwise -1
209 static int
210 uint16_binary_search(uint16_t arr[], int l, int r, uint16_t x)
211 {
212     if (r >= l) {
213         int mid = l + (r - l)/2;
214 
215         // If the element is present at the middle itself
216         if (arr[mid] == x)  return mid;
217 
218         // If element is smaller than mid, then it can only be present
219         // in left subarray
220         if (arr[mid] > x) return uint16_binary_search(arr, l, mid-1, x);
221 
222         // Else the element can only be present in right subarray
223         return uint16_binary_search(arr, mid+1, r, x);
224     }
225 
226     // We reach here when element is not present in array
227     return -1;
228 }
229 
230 static int
231 uint16_cmp (const void * a, const void * b)
232 {
233     return ( *(uint16_t*)a - *(uint16_t*)b );
234 }
235 
236 static inline void
237 sort_uint16_array(uint16_t arr[], int n)
238 {
239     qsort(arr, n, sizeof(uint16_t), uint16_cmp);
240 }
241 
242 static inline char *
243 __strstrip(char *s)
244 {
245     char *end = s + strlen(s) - 1;
246     while(*s == ' ') s++;
247     for (; end >= s; --end) {
248         if (*end != ' ') break;
249     }
250     *(++end) = '\0';
251     return s;
252 }
253 
254 static int
255 __parse_config_list(uint16_t *arr, int *sz, const char *value) {
256     int i, j;
257     char input[4096];
258     char *tokens[128];
259     int nTokens = 0;
260     char *endptr;
261     int nr_ele = 0;
262     int max_ele = *sz;
263 
264     strncpy(input, value, sizeof(input) - 1);
265     nTokens = rte_strsplit(input, sizeof(input), tokens, 128, ',');
266     for (i = 0; i < nTokens; i++) {
267         char *tok = tokens[i];
268         char *middle = strchr(tok, '-');
269         if (middle == NULL) {
270             tok = __strstrip(tok);
271             long v = strtol(tok, &endptr, 10);
272             if (*endptr != '\0') {
273                 fprintf(stderr, "%s is not a integer.", tok);
274                 return 0;
275             }
276             if (nr_ele > max_ele) {
277                 fprintf(stderr, "too many elements in list %s\n", value);
278                 return 0;
279             }
280             arr[nr_ele++] = (uint16_t)v;
281         } else {
282             *middle = '\0';
283             char *lbound = __strstrip(tok);
284             char *rbound = __strstrip(middle+1);
285             long lv = strtol(lbound, &endptr, 10);
286             if (*endptr != '\0') {
287                 fprintf(stderr, "%s is not a integer.", lbound);
288                 return 0;
289             }
290             long rv = strtol(rbound, &endptr, 10);
291             if (*endptr != '\0') {
292                 fprintf(stderr, "%s is not a integer.", rbound);
293                 return 0;
294             }
295             for (j = lv; j <= rv; ++j) {
296                 if (nr_ele > max_ele) {
297                     fprintf(stderr, "too many elements in list %s.\n", value);
298                     return 0;
299                 }
300                 arr[nr_ele++] = (uint16_t)j;
301             }
302         }
303     }
304     if (nr_ele <= 0) {
305         fprintf(stderr, "list %s is empty\n", value);
306         return 1;
307     }
308     sort_uint16_array(arr, nr_ele);
309     *sz = nr_ele;
310     return 1;
311 }
312 
313 static int
314 parse_port_lcore_list(struct ff_port_cfg *cfg, const char *v_str)
315 {
316     cfg->nb_lcores = DPDK_MAX_LCORE;
317     uint16_t *cores = cfg->lcore_list;
318     return __parse_config_list(cores, &cfg->nb_lcores, v_str);
319 }
320 
321 static int
322 parse_port_list(struct ff_config *cfg, const char *v_str)
323 {
324     int res;
325     uint16_t ports[RTE_MAX_ETHPORTS];
326     int sz = RTE_MAX_ETHPORTS;
327 
328     res = __parse_config_list(ports, &sz, v_str);
329     if (! res) return res;
330 
331     uint16_t *portid_list = malloc(sizeof(uint16_t)*sz);
332 
333     if (portid_list == NULL) {
334         fprintf(stderr, "parse_port_list malloc failed\n");
335         return 0;
336     }
337     memcpy(portid_list, ports, sz*sizeof(uint16_t));
338 
339     cfg->dpdk.portid_list = portid_list;
340     cfg->dpdk.nb_ports = sz;
341     cfg->dpdk.max_portid = portid_list[sz-1];
342     return res;
343 }
344 
345 static int
346 parse_port_slave_list(struct ff_port_cfg *cfg, const char *v_str)
347 {
348     int res;
349     uint16_t ports[RTE_MAX_ETHPORTS];
350     int sz = RTE_MAX_ETHPORTS;
351 
352     res = __parse_config_list(ports, &sz, v_str);
353     if (! res) return res;
354 
355     uint16_t *portid_list = malloc(sizeof(uint16_t)*sz);
356 
357     if (portid_list == NULL) {
358         fprintf(stderr, "parse_port_slave_list malloc failed\n");
359         return 0;
360     }
361     memcpy(portid_list, ports, sz*sizeof(uint16_t));
362 
363     cfg->slave_portid_list = portid_list;
364     cfg->nb_slaves = sz;
365 
366     return res;
367 }
368 
369 static int
370 port_cfg_handler(struct ff_config *cfg, const char *section,
371     const char *name, const char *value) {
372 
373     if (cfg->dpdk.nb_ports == 0) {
374         fprintf(stderr, "port_cfg_handler: must config dpdk.port_list first\n");
375         return 0;
376     }
377 
378     if (cfg->dpdk.port_cfgs == NULL) {
379         struct ff_port_cfg *pc = calloc(RTE_MAX_ETHPORTS, sizeof(struct ff_port_cfg));
380         if (pc == NULL) {
381             fprintf(stderr, "port_cfg_handler malloc failed\n");
382             return 0;
383         }
384         // initialize lcore list and nb_lcores
385         int i;
386         for (i = 0; i < cfg->dpdk.nb_ports; ++i) {
387             uint16_t portid = cfg->dpdk.portid_list[i];
388 
389             struct ff_port_cfg *pconf = &pc[portid];
390             pconf->port_id = portid;
391             pconf->nb_lcores = ff_global_cfg.dpdk.nb_procs;
392             memcpy(pconf->lcore_list, ff_global_cfg.dpdk.proc_lcore,
393                    pconf->nb_lcores*sizeof(uint16_t));
394         }
395         cfg->dpdk.port_cfgs = pc;
396     }
397 
398     int portid;
399     int ret = sscanf(section, "port%d", &portid);
400     if (ret != 1) {
401         fprintf(stderr, "port_cfg_handler section[%s] error\n", section);
402         return 0;
403     }
404 
405     /* just return true if portid >= nb_ports because it has no effect */
406     if (portid > cfg->dpdk.max_portid) {
407         fprintf(stderr, "port_cfg_handler section[%s] bigger than max port id\n", section);
408         return 1;
409     }
410 
411     struct ff_port_cfg *cur = &cfg->dpdk.port_cfgs[portid];
412     if (cur->name == NULL) {
413         cur->name = strdup(section);
414         cur->port_id = portid;
415     }
416 
417     if (strcmp(name, "addr") == 0) {
418         cur->addr = strdup(value);
419     } else if (strcmp(name, "netmask") == 0) {
420         cur->netmask = strdup(value);
421     } else if (strcmp(name, "broadcast") == 0) {
422         cur->broadcast = strdup(value);
423     } else if (strcmp(name, "gateway") == 0) {
424         cur->gateway = strdup(value);
425     } else if (strcmp(name, "pcap") == 0) {
426         cur->pcap = strdup(value);
427     } else if (strcmp(name, "lcore_list") == 0) {
428         return parse_port_lcore_list(cur, value);
429     } else if (strcmp(name, "slave_port_list") == 0) {
430         return parse_port_slave_list(cur, value);
431     }
432 
433     return 1;
434 }
435 
436 static int
437 vdev_cfg_handler(struct ff_config *cfg, const char *section,
438     const char *name, const char *value) {
439 
440     if (cfg->dpdk.nb_vdev == 0) {
441         fprintf(stderr, "vdev_cfg_handler: must config dpdk.nb_vdev first\n");
442         return 0;
443     }
444 
445     if (cfg->dpdk.vdev_cfgs == NULL) {
446         struct ff_vdev_cfg *vc = calloc(RTE_MAX_ETHPORTS, sizeof(struct ff_vdev_cfg));
447         if (vc == NULL) {
448             fprintf(stderr, "vdev_cfg_handler malloc failed\n");
449             return 0;
450         }
451         cfg->dpdk.vdev_cfgs = vc;
452     }
453 
454     int vdevid;
455     int ret = sscanf(section, "vdev%d", &vdevid);
456     if (ret != 1) {
457         fprintf(stderr, "vdev_cfg_handler section[%s] error\n", section);
458         return 0;
459     }
460 
461     /* just return true if vdevid >= nb_vdev because it has no effect */
462     if (vdevid > cfg->dpdk.nb_vdev) {
463         fprintf(stderr, "vdev_cfg_handler section[%s] bigger than max vdev id\n", section);
464         return 1;
465     }
466 
467     struct ff_vdev_cfg *cur = &cfg->dpdk.vdev_cfgs[vdevid];
468     if (cur->name == NULL) {
469         cur->name = strdup(section);
470         cur->vdev_id = vdevid;
471     }
472 
473     if (strcmp(name, "iface") == 0) {
474         cur->iface = strdup(value);
475     } else if (strcmp(name, "path") == 0) {
476         cur->path = strdup(value);
477     } else if (strcmp(name, "queues") == 0) {
478         cur->nb_queues = atoi(value);
479     } else if (strcmp(name, "queue_size") == 0) {
480         cur->queue_size = atoi(value);
481     } else if (strcmp(name, "mac") == 0) {
482         cur->mac = strdup(value);
483     } else if (strcmp(name, "cq") == 0) {
484         cur->nb_cq = atoi(value);
485     }
486 
487     return 1;
488 }
489 
490 static int
491 bond_cfg_handler(struct ff_config *cfg, const char *section,
492     const char *name, const char *value) {
493 
494     if (cfg->dpdk.nb_bond == 0) {
495         fprintf(stderr, "bond_cfg_handler: must config dpdk.nb_bond first\n");
496         return 0;
497     }
498 
499     if (cfg->dpdk.bond_cfgs == NULL) {
500         struct ff_bond_cfg *vc = calloc(RTE_MAX_ETHPORTS, sizeof(struct ff_bond_cfg));
501         if (vc == NULL) {
502             fprintf(stderr, "ff_bond_cfg malloc failed\n");
503             return 0;
504         }
505         cfg->dpdk.bond_cfgs = vc;
506     }
507 
508     int bondid;
509     int ret = sscanf(section, "bond%d", &bondid);
510     if (ret != 1) {
511         fprintf(stderr, "bond_cfg_handler section[%s] error\n", section);
512         return 0;
513     }
514 
515     /* just return true if bondid >= nb_vdev because it has no effect */
516     if (bondid > cfg->dpdk.nb_bond) {
517         fprintf(stderr, "bond_cfg_handler section[%s] bigger than max bond id\n", section);
518         return 1;
519     }
520 
521     struct ff_bond_cfg *cur = &cfg->dpdk.bond_cfgs[bondid];
522     if (cur->name == NULL) {
523         cur->name = strdup(section);
524         cur->bond_id = bondid;
525     }
526 
527     if (strcmp(name, "mode") == 0) {
528         cur->mode = atoi(value);
529     } else if (strcmp(name, "slave") == 0) {
530         cur->slave = strdup(value);
531     } else if (strcmp(name, "primary") == 0) {
532         cur->primary = strdup(value);
533     } else if (strcmp(name, "socket_id") == 0) {
534         cur->socket_id = atoi(value);
535     } else if (strcmp(name, "mac") == 0) {
536         cur->bond_mac = strdup(value);
537     } else if (strcmp(name, "xmit_policy") == 0) {
538         cur->xmit_policy = strdup(value);
539     } else if (strcmp(name, "lsc_poll_period_ms") == 0) {
540         cur->lsc_poll_period_ms = atoi(value);
541     } else if (strcmp(name, "up_delay") == 0) {
542         cur->up_delay = atoi(value);
543     } else if (strcmp(name, "down_delay") == 0) {
544         cur->down_delay = atoi(value);
545     }
546 
547     return 1;
548 }
549 
550 static int
551 ini_parse_handler(void* user, const char* section, const char* name,
552     const char* value)
553 {
554     struct ff_config *pconfig = (struct ff_config*)user;
555 
556     printf("[%s]: %s=%s\n", section, name, value);
557 
558     #define MATCH(s, n) strcmp(section, s) == 0 && strcmp(name, n) == 0
559     if (MATCH("dpdk", "channel")) {
560         pconfig->dpdk.nb_channel = atoi(value);
561     } else if (MATCH("dpdk", "memory")) {
562         pconfig->dpdk.memory = atoi(value);
563     } else if (MATCH("dpdk", "no_huge")) {
564         pconfig->dpdk.no_huge = atoi(value);
565     } else if (MATCH("dpdk", "lcore_mask")) {
566         pconfig->dpdk.lcore_mask = strdup(value);
567         return parse_lcore_mask(pconfig, pconfig->dpdk.lcore_mask);
568     } else if (MATCH("dpdk", "base_virtaddr")) {
569         pconfig->dpdk.base_virtaddr= strdup(value);
570     } else if (MATCH("dpdk", "port_list")) {
571         return parse_port_list(pconfig, value);
572     } else if (MATCH("dpdk", "nb_vdev")) {
573         pconfig->dpdk.nb_vdev = atoi(value);
574     } else if (MATCH("dpdk", "nb_bond")) {
575         pconfig->dpdk.nb_bond = atoi(value);
576     } else if (MATCH("dpdk", "promiscuous")) {
577         pconfig->dpdk.promiscuous = atoi(value);
578     } else if (MATCH("dpdk", "numa_on")) {
579         pconfig->dpdk.numa_on = atoi(value);
580     } else if (MATCH("dpdk", "tso")) {
581         pconfig->dpdk.tso = atoi(value);
582     } else if (MATCH("dpdk", "tx_csum_offoad_skip")) {
583         pconfig->dpdk.tx_csum_offoad_skip = atoi(value);
584     } else if (MATCH("dpdk", "vlan_strip")) {
585         pconfig->dpdk.vlan_strip = atoi(value);
586     } else if (MATCH("dpdk", "idle_sleep")) {
587         pconfig->dpdk.idle_sleep = atoi(value);
588     } else if (MATCH("dpdk", "pkt_tx_delay")) {
589         pconfig->dpdk.pkt_tx_delay = atoi(value);
590     } else if (MATCH("dpdk", "symmetric_rss")) {
591         pconfig->dpdk.symmetric_rss = atoi(value);
592     } else if (MATCH("kni", "enable")) {
593         pconfig->kni.enable= atoi(value);
594     } else if (MATCH("kni", "kni_action")) {
595         pconfig->kni.kni_action= strdup(value);
596     } else if (MATCH("kni", "method")) {
597         pconfig->kni.method= strdup(value);
598     } else if (MATCH("kni", "tcp_port")) {
599         pconfig->kni.tcp_port = strdup(value);
600     } else if (MATCH("kni", "udp_port")) {
601         pconfig->kni.udp_port= strdup(value);
602     } else if (strcmp(section, "freebsd.boot") == 0) {
603         if (strcmp(name, "hz") == 0) {
604             pconfig->freebsd.hz = atoi(value);
605         } else if (strcmp(name, "physmem") == 0) {
606             pconfig->freebsd.physmem = atol(value);
607         } else if (strcmp(name, "fd_reserve") == 0) {
608             pconfig->freebsd.fd_reserve = atoi(value);
609         } else if (strcmp(name, "memsz_MB") == 0) {
610             pconfig->freebsd.mem_size = atoi(value);
611         } else {
612             return freebsd_conf_handler(pconfig, "boot", name, value);
613         }
614     } else if (strcmp(section, "freebsd.sysctl") == 0) {
615         return freebsd_conf_handler(pconfig, "sysctl", name, value);
616     } else if (strncmp(section, "port", 4) == 0) {
617         return port_cfg_handler(pconfig, section, name, value);
618     } else if (strncmp(section, "vdev", 4) == 0) {
619         return vdev_cfg_handler(pconfig, section, name, value);
620     } else if (strncmp(section, "bond", 4) == 0) {
621         return bond_cfg_handler(pconfig, section, name, value);
622     } else if (strcmp(section, "pcap") == 0) {
623         if (strcmp(name, "snaplen") == 0) {
624             pconfig->pcap.snap_len = (uint16_t)atoi(value);
625         } else if (strcmp(name, "savelen") == 0) {
626             pconfig->pcap.save_len = (uint32_t)atoi(value);
627         } else if (strcmp(name, "enable") == 0) {
628             pconfig->pcap.enable = (uint16_t)atoi(value);
629         } else if (strcmp(name, "savepath") == 0) {
630             pconfig->pcap.save_path = strdup(value);
631         }
632     }
633 
634     return 1;
635 }
636 
637 static int
638 dpdk_args_setup(struct ff_config *cfg)
639 {
640     int n = 0, i;
641     dpdk_argv[n++] = strdup("f-stack");
642     char temp[DPDK_CONFIG_MAXLEN] = {0}, temp2[DPDK_CONFIG_MAXLEN] = {0};
643 
644     if (cfg->dpdk.no_huge) {
645         dpdk_argv[n++] = strdup("--no-huge");
646     }
647     if (cfg->dpdk.proc_mask) {
648         sprintf(temp, "-c%s", cfg->dpdk.proc_mask);
649         dpdk_argv[n++] = strdup(temp);
650     }
651     if (cfg->dpdk.nb_channel) {
652         sprintf(temp, "-n%d", cfg->dpdk.nb_channel);
653         dpdk_argv[n++] = strdup(temp);
654     }
655     if (cfg->dpdk.memory) {
656         sprintf(temp, "-m%d", cfg->dpdk.memory);
657         dpdk_argv[n++] = strdup(temp);
658     }
659     if (cfg->dpdk.proc_type) {
660         sprintf(temp, "--proc-type=%s", cfg->dpdk.proc_type);
661         dpdk_argv[n++] = strdup(temp);
662     }
663     if (cfg->dpdk.base_virtaddr) {
664         sprintf(temp, "--base-virtaddr=%s", cfg->dpdk.base_virtaddr);
665         dpdk_argv[n++] = strdup(temp);
666     }
667 
668     if (cfg->dpdk.nb_vdev) {
669         for (i=0; i<cfg->dpdk.nb_vdev; i++) {
670             sprintf(temp, "--vdev=virtio_user%d,path=%s",
671                 cfg->dpdk.vdev_cfgs[i].vdev_id,
672                 cfg->dpdk.vdev_cfgs[i].path);
673             if (cfg->dpdk.vdev_cfgs[i].nb_queues) {
674                 sprintf(temp2, ",queues=%u",
675                     cfg->dpdk.vdev_cfgs[i].nb_queues);
676                 strcat(temp, temp2);
677             }
678             if (cfg->dpdk.vdev_cfgs[i].nb_cq) {
679                 sprintf(temp2, ",cq=%u",
680                     cfg->dpdk.vdev_cfgs[i].nb_cq);
681                 strcat(temp, temp2);
682             }
683             if (cfg->dpdk.vdev_cfgs[i].queue_size) {
684                 sprintf(temp2, ",queue_size=%u",
685                     cfg->dpdk.vdev_cfgs[i].queue_size);
686                 strcat(temp, temp2);
687             }
688             if (cfg->dpdk.vdev_cfgs[i].mac) {
689                 sprintf(temp2, ",mac=%s",
690                     cfg->dpdk.vdev_cfgs[i].mac);
691                 strcat(temp, temp2);
692             }
693             dpdk_argv[n++] = strdup(temp);
694         }
695         sprintf(temp, "--no-pci");
696         dpdk_argv[n++] = strdup(temp);
697         sprintf(temp, "--file-prefix=container");
698         dpdk_argv[n++] = strdup(temp);
699     }
700 
701     if (cfg->dpdk.nb_bond) {
702         for (i=0; i<cfg->dpdk.nb_bond; i++) {
703             sprintf(temp, "--vdev");
704             dpdk_argv[n++] = strdup(temp);
705             sprintf(temp, "net_bonding%d,mode=%d,slave=%s",
706                 cfg->dpdk.bond_cfgs[i].bond_id,
707                 cfg->dpdk.bond_cfgs[i].mode,
708                 cfg->dpdk.bond_cfgs[i].slave);
709 
710                 if (cfg->dpdk.bond_cfgs[i].primary) {
711                     sprintf(temp2, ",primary=%s",
712                         cfg->dpdk.bond_cfgs[i].primary);
713                     strcat(temp, temp2);
714                 }
715 
716                 if (cfg->dpdk.bond_cfgs[i].socket_id) {
717                     sprintf(temp2, ",socket_id=%d",
718                         cfg->dpdk.bond_cfgs[i].socket_id);
719                     strcat(temp, temp2);
720                 }
721 
722                 if (cfg->dpdk.bond_cfgs[i].bond_mac) {
723                     sprintf(temp2, ",mac=%s",
724                         cfg->dpdk.bond_cfgs[i].bond_mac);
725                     strcat(temp, temp2);
726                 }
727 
728                 if (cfg->dpdk.bond_cfgs[i].xmit_policy) {
729                     sprintf(temp2, ",xmit_policy=%s",
730                         cfg->dpdk.bond_cfgs[i].xmit_policy);
731                     strcat(temp, temp2);
732                 }
733 
734                 if (cfg->dpdk.bond_cfgs[i].lsc_poll_period_ms) {
735                     sprintf(temp2, ",lsc_poll_period_ms=%d",
736                         cfg->dpdk.bond_cfgs[i].lsc_poll_period_ms);
737                     strcat(temp, temp2);
738                 }
739 
740                 if (cfg->dpdk.bond_cfgs[i].up_delay) {
741                     sprintf(temp2, ",up_delay=%d",
742                         cfg->dpdk.bond_cfgs[i].up_delay);
743                     strcat(temp, temp2);
744                 }
745 
746                 if (cfg->dpdk.bond_cfgs[i].down_delay) {
747                     sprintf(temp2, ",down_delay=%d",
748                         cfg->dpdk.bond_cfgs[i].down_delay);
749                     strcat(temp, temp2);
750                 }
751                 dpdk_argv[n++] = strdup(temp);
752         }
753     }
754 
755     dpdk_argc = n;
756 
757     for (i=0; i<n; i++)
758         printf("%s ", dpdk_argv[i]);
759 
760     return n;
761 }
762 
763 static int
764 ff_parse_args(struct ff_config *cfg, int argc, char *const argv[])
765 {
766     int c;
767     int index = 0;
768     optind = 1;
769     while((c = getopt_long(argc, argv, short_options, long_options, &index)) != -1) {
770         switch (c) {
771             case 'c':
772                 cfg->filename = strdup(optarg);
773                 break;
774             case 'p':
775                 cfg->dpdk.proc_id = atoi(optarg);
776                 break;
777             case 't':
778                 cfg->dpdk.proc_type = strdup(optarg);
779                 break;
780             default:
781                 return -1;
782         }
783     }
784 
785     if (cfg->dpdk.proc_type == NULL) {
786         cfg->dpdk.proc_type = strdup("auto");
787     }
788 
789     if (strcmp(cfg->dpdk.proc_type, "primary") &&
790         strcmp(cfg->dpdk.proc_type, "secondary") &&
791         strcmp(cfg->dpdk.proc_type, "auto")) {
792         printf("invalid proc-type:%s\n", cfg->dpdk.proc_type);
793         return -1;
794     }
795 
796     if ((uint16_t)cfg->dpdk.proc_id > RTE_MAX_LCORE) {
797         printf("invalid proc_id:%d, use default 0\n", cfg->dpdk.proc_id);
798         cfg->dpdk.proc_id = 0;
799     }
800 
801     return 0;
802 }
803 
804 static int
805 ff_check_config(struct ff_config *cfg)
806 {
807     if(cfg->kni.enable && !cfg->kni.method) {
808         fprintf(stderr, "conf dpdk.method is necessary\n");
809         return -1;
810     }
811 
812     if(cfg->kni.method) {
813         if(strcasecmp(cfg->kni.method,"accept") &&
814             strcasecmp(cfg->kni.method,"reject")) {
815             fprintf(stderr, "conf kni.method[accept|reject] is error(%s)\n",
816                 cfg->kni.method);
817             return -1;
818         }
819     }
820 
821     if(cfg->kni.kni_action) {
822         if (strcasecmp(cfg->kni.kni_action,"alltokni") &&
823             strcasecmp(cfg->kni.kni_action,"alltoff") &&
824             strcasecmp(cfg->kni.kni_action,"default")){
825                 fprintf(stderr, "conf kni.kni_action[alltokni|alltoff|default] is error(%s)\n",
826                 cfg->kni.kni_action);
827                 return -1;
828         }
829     }
830 
831     if (cfg->pcap.save_len < PCAP_SAVE_MINLEN)
832         cfg->pcap.save_len = PCAP_SAVE_MINLEN;
833     if (cfg->pcap.snap_len < PCAP_SNAP_MINLEN)
834         cfg->pcap.snap_len = PCAP_SNAP_MINLEN;
835     if (cfg->pcap.save_path==NULL || strlen(cfg->pcap.save_path) ==0)
836         cfg->pcap.save_path = strdup(".");
837 
838     #define CHECK_VALID(n) \
839         do { \
840             if (!pc->n) { \
841                 fprintf(stderr, "port%d if config error: no %s\n", \
842                     pc->port_id, #n); \
843                 return -1; \
844             } \
845         } while (0)
846 
847     int i;
848     for (i = 0; i < cfg->dpdk.nb_ports; i++) {
849         uint16_t portid = cfg->dpdk.portid_list[i];
850         struct ff_port_cfg *pc = &cfg->dpdk.port_cfgs[portid];
851         CHECK_VALID(addr);
852         CHECK_VALID(netmask);
853         CHECK_VALID(broadcast);
854         CHECK_VALID(gateway);
855         // check if the lcores in lcore_list are enabled.
856         int k;
857         for (k = 0; k < pc->nb_lcores; k++) {
858             uint16_t lcore_id = pc->lcore_list[k];
859             if (uint16_binary_search(cfg->dpdk.proc_lcore, 0,
860                                      cfg->dpdk.nb_procs-1, lcore_id) < 0) {
861                 fprintf(stderr, "lcore %d is not enabled.\n", lcore_id);
862                 return -1;
863             }
864         }
865         /*
866          * only primary process process KNI, so if KNI enabled,
867          * primary lcore must stay in every enabled ports' lcore_list
868          */
869         if (cfg->kni.enable &&
870             strcmp(cfg->dpdk.proc_type, "primary") == 0) {
871             int found = 0;
872             int j;
873             uint16_t lcore_id = cfg->dpdk.proc_lcore[cfg->dpdk.proc_id];
874             for (j = 0; j < pc->nb_lcores; j++) {
875                 if (pc->lcore_list[j] == lcore_id) {
876                     found = 1;
877                 }
878             }
879             if (! found) {
880                 fprintf(stderr,
881                          "primary lcore %d should stay in port %d's lcore_list.\n",
882                          lcore_id, pc->port_id);
883                 return -1;
884             }
885         }
886     }
887 
888     return 0;
889 }
890 
891 static void
892 ff_default_config(struct ff_config *cfg)
893 {
894     memset(cfg, 0, sizeof(struct ff_config));
895 
896     cfg->filename = DEFAULT_CONFIG_FILE;
897 
898     cfg->dpdk.proc_id = -1;
899     cfg->dpdk.numa_on = 1;
900     cfg->dpdk.promiscuous = 1;
901     cfg->dpdk.pkt_tx_delay = BURST_TX_DRAIN_US;
902 
903     cfg->freebsd.hz = 100;
904     cfg->freebsd.physmem = 1048576*256;
905     cfg->freebsd.fd_reserve = 0;
906     cfg->freebsd.mem_size = 256;
907 }
908 
909 int
910 ff_load_config(int argc, char *const argv[])
911 {
912     ff_default_config(&ff_global_cfg);
913 
914     int ret = ff_parse_args(&ff_global_cfg, argc, argv);
915     if (ret < 0) {
916         return ret;
917     }
918 
919     ret = ini_parse(ff_global_cfg.filename, ini_parse_handler,
920         &ff_global_cfg);
921     if (ret != 0) {
922         printf("parse %s failed on line %d\n", ff_global_cfg.filename, ret);
923         return -1;
924     }
925 
926     if (ff_check_config(&ff_global_cfg)) {
927         return -1;
928     }
929 
930     if (dpdk_args_setup(&ff_global_cfg) <= 0) {
931         return -1;
932     }
933 
934     return 0;
935 }
936