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d3e51122 JHS |
1 | /* |
2 | * m_ife.c IFE actions module | |
3 | * | |
4 | * This program is free software; you can distribute 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. | |
8 | * | |
9 | * Authors: J Hadi Salim (jhs@mojatatu.com) | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
d3e51122 JHS |
16 | #include <fcntl.h> |
17 | #include <sys/socket.h> | |
18 | #include <netinet/in.h> | |
19 | #include <arpa/inet.h> | |
20 | #include <string.h> | |
21 | #include <linux/netdevice.h> | |
22 | ||
23 | #include "rt_names.h" | |
24 | #include "utils.h" | |
25 | #include "tc_util.h" | |
26 | #include <linux/tc_act/tc_ife.h> | |
27 | ||
28 | static void ife_explain(void) | |
29 | { | |
30 | fprintf(stderr, | |
1b600f4b | 31 | "Usage:... ife {decode|encode} [{ALLOW|USE} ATTR] [dst DMAC] [src SMAC] [type TYPE] [CONTROL] [index INDEX]\n"); |
d3e51122 JHS |
32 | fprintf(stderr, |
33 | "\tALLOW := Encode direction. Allows encoding specified metadata\n" | |
34 | "\t\t e.g \"allow mark\"\n" | |
35 | "\tUSE := Encode direction. Enforce Static encoding of specified metadata\n" | |
36 | "\t\t e.g \"use mark 0x12\"\n" | |
1b600f4b | 37 | "\tATTR := mark (32-bit), prio (32-bit), tcindex (16-bit)\n" |
d3e51122 JHS |
38 | "\tDMAC := 6 byte Destination MAC address to encode\n" |
39 | "\tSMAC := optional 6 byte Source MAC address to encode\n" | |
40 | "\tTYPE := optional 16 bit ethertype to encode\n" | |
41 | "\tCONTROL := reclassify|pipe|drop|continue|ok\n" | |
42 | "\tINDEX := optional IFE table index value used\n"); | |
43 | fprintf(stderr, "encode is used for sending IFE packets\n"); | |
44 | fprintf(stderr, "decode is used for receiving IFE packets\n"); | |
45 | } | |
46 | ||
47 | static void ife_usage(void) | |
48 | { | |
49 | ife_explain(); | |
50 | exit(-1); | |
51 | } | |
52 | ||
53 | static int parse_ife(struct action_util *a, int *argc_p, char ***argv_p, | |
54 | int tca_id, struct nlmsghdr *n) | |
55 | { | |
56 | int argc = *argc_p; | |
57 | char **argv = *argv_p; | |
58 | int ok = 0; | |
e67aba55 | 59 | struct tc_ife p = { 0 }; |
d3e51122 JHS |
60 | struct rtattr *tail; |
61 | struct rtattr *tail2; | |
62 | char dbuf[ETH_ALEN]; | |
63 | char sbuf[ETH_ALEN]; | |
64 | __u16 ife_type = 0; | |
bf338b60 | 65 | int user_type = 0; |
d3e51122 JHS |
66 | __u32 ife_prio = 0; |
67 | __u32 ife_prio_v = 0; | |
68 | __u32 ife_mark = 0; | |
69 | __u32 ife_mark_v = 0; | |
8da6ff35 JHS |
70 | __u16 ife_tcindex = 0; |
71 | __u16 ife_tcindex_v = 0; | |
d3e51122 JHS |
72 | char *daddr = NULL; |
73 | char *saddr = NULL; | |
74 | ||
d3e51122 JHS |
75 | if (argc <= 0) |
76 | return -1; | |
77 | ||
78 | while (argc > 0) { | |
79 | if (matches(*argv, "ife") == 0) { | |
80 | NEXT_ARG(); | |
81 | continue; | |
82 | } else if (matches(*argv, "decode") == 0) { | |
83 | p.flags = IFE_DECODE; /* readability aid */ | |
84 | ok++; | |
85 | } else if (matches(*argv, "encode") == 0) { | |
86 | p.flags = IFE_ENCODE; | |
87 | ok++; | |
88 | } else if (matches(*argv, "allow") == 0) { | |
89 | NEXT_ARG(); | |
90 | if (matches(*argv, "mark") == 0) { | |
91 | ife_mark = IFE_META_SKBMARK; | |
92 | } else if (matches(*argv, "prio") == 0) { | |
93 | ife_prio = IFE_META_PRIO; | |
8da6ff35 | 94 | } else if (matches(*argv, "tcindex") == 0) { |
25a24934 | 95 | ife_tcindex = IFE_META_TCINDEX; |
d3e51122 | 96 | } else { |
0aaf62fc | 97 | invarg("Illegal meta define", *argv); |
d3e51122 JHS |
98 | } |
99 | } else if (matches(*argv, "use") == 0) { | |
100 | NEXT_ARG(); | |
101 | if (matches(*argv, "mark") == 0) { | |
102 | NEXT_ARG(); | |
103 | if (get_u32(&ife_mark_v, *argv, 0)) | |
104 | invarg("ife mark val is invalid", | |
105 | *argv); | |
106 | } else if (matches(*argv, "prio") == 0) { | |
107 | NEXT_ARG(); | |
108 | if (get_u32(&ife_prio_v, *argv, 0)) | |
109 | invarg("ife prio val is invalid", | |
110 | *argv); | |
8da6ff35 JHS |
111 | } else if (matches(*argv, "tcindex") == 0) { |
112 | NEXT_ARG(); | |
113 | if (get_u16(&ife_tcindex_v, *argv, 0)) | |
114 | invarg("ife tcindex val is invalid", | |
115 | *argv); | |
d3e51122 | 116 | } else { |
0aaf62fc | 117 | invarg("Illegal meta use type", *argv); |
d3e51122 JHS |
118 | } |
119 | } else if (matches(*argv, "type") == 0) { | |
120 | NEXT_ARG(); | |
121 | if (get_u16(&ife_type, *argv, 0)) | |
122 | invarg("ife type is invalid", *argv); | |
664f35aa | 123 | fprintf(stderr, "IFE type 0x%04X\n", ife_type); |
bf338b60 | 124 | user_type = 1; |
d3e51122 JHS |
125 | } else if (matches(*argv, "dst") == 0) { |
126 | NEXT_ARG(); | |
127 | daddr = *argv; | |
128 | if (sscanf(daddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", | |
129 | dbuf, dbuf + 1, dbuf + 2, | |
130 | dbuf + 3, dbuf + 4, dbuf + 5) != 6) { | |
0aaf62fc | 131 | invarg("Invalid mac address", *argv); |
d3e51122 JHS |
132 | } |
133 | fprintf(stderr, "dst MAC address <%s>\n", daddr); | |
134 | ||
135 | } else if (matches(*argv, "src") == 0) { | |
136 | NEXT_ARG(); | |
137 | saddr = *argv; | |
138 | if (sscanf(saddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", | |
139 | sbuf, sbuf + 1, sbuf + 2, | |
140 | sbuf + 3, sbuf + 4, sbuf + 5) != 6) { | |
0aaf62fc | 141 | invarg("Invalid mac address", *argv); |
d3e51122 JHS |
142 | } |
143 | fprintf(stderr, "src MAC address <%s>\n", saddr); | |
144 | } else if (matches(*argv, "help") == 0) { | |
145 | ife_usage(); | |
146 | } else { | |
147 | break; | |
148 | } | |
149 | ||
150 | argc--; | |
151 | argv++; | |
152 | } | |
153 | ||
e67aba55 | 154 | parse_action_control_dflt(&argc, &argv, &p.action, false, TC_ACT_PIPE); |
d3e51122 JHS |
155 | |
156 | if (argc) { | |
157 | if (matches(*argv, "index") == 0) { | |
158 | NEXT_ARG(); | |
9a56cca3 | 159 | if (get_u32(&p.index, *argv, 0)) { |
d3e51122 JHS |
160 | fprintf(stderr, "ife: Illegal \"index\"\n"); |
161 | return -1; | |
162 | } | |
a78a2dba | 163 | ok++; |
d3e51122 JHS |
164 | argc--; |
165 | argv++; | |
166 | } | |
167 | } | |
168 | ||
169 | if (!ok) { | |
170 | fprintf(stderr, "IFE requires decode/encode specified\n"); | |
171 | ife_usage(); | |
172 | } | |
173 | ||
c14f9d92 | 174 | tail = addattr_nest(n, MAX_MSG, tca_id); |
d3e51122 JHS |
175 | addattr_l(n, MAX_MSG, TCA_IFE_PARMS, &p, sizeof(p)); |
176 | ||
177 | if (!(p.flags & IFE_ENCODE)) | |
178 | goto skip_encode; | |
179 | ||
180 | if (daddr) | |
181 | addattr_l(n, MAX_MSG, TCA_IFE_DMAC, dbuf, ETH_ALEN); | |
bf338b60 | 182 | if (user_type) |
d3e51122 | 183 | addattr_l(n, MAX_MSG, TCA_IFE_TYPE, &ife_type, 2); |
38060de1 AA |
184 | else |
185 | fprintf(stderr, "IFE type 0x%04X\n", ETH_P_IFE); | |
d3e51122 JHS |
186 | if (saddr) |
187 | addattr_l(n, MAX_MSG, TCA_IFE_SMAC, sbuf, ETH_ALEN); | |
188 | ||
c14f9d92 | 189 | tail2 = addattr_nest(n, MAX_MSG, TCA_IFE_METALST); |
d3e51122 JHS |
190 | if (ife_mark || ife_mark_v) { |
191 | if (ife_mark_v) | |
192 | addattr_l(n, MAX_MSG, IFE_META_SKBMARK, &ife_mark_v, 4); | |
193 | else | |
194 | addattr_l(n, MAX_MSG, IFE_META_SKBMARK, NULL, 0); | |
195 | } | |
196 | if (ife_prio || ife_prio_v) { | |
197 | if (ife_prio_v) | |
198 | addattr_l(n, MAX_MSG, IFE_META_PRIO, &ife_prio_v, 4); | |
199 | else | |
200 | addattr_l(n, MAX_MSG, IFE_META_PRIO, NULL, 0); | |
201 | } | |
8da6ff35 JHS |
202 | if (ife_tcindex || ife_tcindex_v) { |
203 | if (ife_tcindex_v) | |
204 | addattr_l(n, MAX_MSG, IFE_META_TCINDEX, &ife_tcindex_v, | |
205 | 2); | |
206 | else | |
207 | addattr_l(n, MAX_MSG, IFE_META_TCINDEX, NULL, 0); | |
208 | } | |
d3e51122 | 209 | |
c14f9d92 | 210 | addattr_nest_end(n, tail2); |
d3e51122 JHS |
211 | |
212 | skip_encode: | |
c14f9d92 | 213 | addattr_nest_end(n, tail); |
d3e51122 JHS |
214 | |
215 | *argc_p = argc; | |
216 | *argv_p = argv; | |
217 | return 0; | |
218 | } | |
219 | ||
220 | static int print_ife(struct action_util *au, FILE *f, struct rtattr *arg) | |
221 | { | |
222 | struct tc_ife *p = NULL; | |
223 | struct rtattr *tb[TCA_IFE_MAX + 1]; | |
224 | __u16 ife_type = 0; | |
225 | __u32 mmark = 0; | |
8da6ff35 | 226 | __u16 mtcindex = 0; |
d3e51122 JHS |
227 | __u32 mprio = 0; |
228 | int has_optional = 0; | |
d3e51122 JHS |
229 | SPRINT_BUF(b2); |
230 | ||
231 | if (arg == NULL) | |
232 | return -1; | |
233 | ||
234 | parse_rtattr_nested(tb, TCA_IFE_MAX, arg); | |
235 | ||
236 | if (tb[TCA_IFE_PARMS] == NULL) { | |
8744c5d3 | 237 | print_string(PRINT_FP, NULL, "%s", "[NULL ife parameters]"); |
d3e51122 JHS |
238 | return -1; |
239 | } | |
240 | p = RTA_DATA(tb[TCA_IFE_PARMS]); | |
241 | ||
8744c5d3 | 242 | print_string(PRINT_ANY, "kind", "%s ", "ife"); |
53d34eb6 | 243 | print_string(PRINT_ANY, "mode", "%s ", |
8744c5d3 | 244 | p->flags & IFE_ENCODE ? "encode" : "decode"); |
e67aba55 | 245 | print_action_control(f, "action ", p->action, " "); |
d3e51122 JHS |
246 | |
247 | if (tb[TCA_IFE_TYPE]) { | |
248 | ife_type = rta_getattr_u16(tb[TCA_IFE_TYPE]); | |
249 | has_optional = 1; | |
90c5c969 | 250 | print_0xhex(PRINT_ANY, "type", "type %#llX ", ife_type); |
d3e51122 JHS |
251 | } |
252 | ||
253 | if (has_optional) | |
8744c5d3 | 254 | print_string(PRINT_FP, NULL, "%s\t", _SL_); |
d3e51122 JHS |
255 | |
256 | if (tb[TCA_IFE_METALST]) { | |
257 | struct rtattr *metalist[IFE_META_MAX + 1]; | |
258 | int len = 0; | |
259 | ||
260 | parse_rtattr_nested(metalist, IFE_META_MAX, | |
261 | tb[TCA_IFE_METALST]); | |
262 | ||
263 | if (metalist[IFE_META_SKBMARK]) { | |
264 | len = RTA_PAYLOAD(metalist[IFE_META_SKBMARK]); | |
265 | if (len) { | |
266 | mmark = rta_getattr_u32(metalist[IFE_META_SKBMARK]); | |
8744c5d3 RM |
267 | print_uint(PRINT_ANY, "mark", "use mark %u ", |
268 | mmark); | |
d3e51122 | 269 | } else |
8744c5d3 RM |
270 | print_string(PRINT_ANY, "mark", "%s mark ", |
271 | "allow"); | |
d3e51122 JHS |
272 | } |
273 | ||
8da6ff35 JHS |
274 | if (metalist[IFE_META_TCINDEX]) { |
275 | len = RTA_PAYLOAD(metalist[IFE_META_TCINDEX]); | |
d3e51122 | 276 | if (len) { |
8da6ff35 JHS |
277 | mtcindex = |
278 | rta_getattr_u16(metalist[IFE_META_TCINDEX]); | |
8744c5d3 RM |
279 | print_uint(PRINT_ANY, "tcindex", |
280 | "use tcindex %u ", mtcindex); | |
d3e51122 | 281 | } else |
8744c5d3 RM |
282 | print_string(PRINT_ANY, "tcindex", |
283 | "%s tcindex ", "allow"); | |
d3e51122 JHS |
284 | } |
285 | ||
286 | if (metalist[IFE_META_PRIO]) { | |
287 | len = RTA_PAYLOAD(metalist[IFE_META_PRIO]); | |
288 | if (len) { | |
289 | mprio = rta_getattr_u32(metalist[IFE_META_PRIO]); | |
8744c5d3 RM |
290 | print_uint(PRINT_ANY, "prio", "use prio %u ", |
291 | mprio); | |
d3e51122 | 292 | } else |
8744c5d3 RM |
293 | print_string(PRINT_ANY, "prio", "%s prio ", |
294 | "allow"); | |
d3e51122 JHS |
295 | } |
296 | ||
297 | } | |
298 | ||
299 | if (tb[TCA_IFE_DMAC]) { | |
300 | has_optional = 1; | |
8744c5d3 RM |
301 | print_string(PRINT_ANY, "dst", "dst %s ", |
302 | ll_addr_n2a(RTA_DATA(tb[TCA_IFE_DMAC]), | |
303 | RTA_PAYLOAD(tb[TCA_IFE_DMAC]), 0, b2, | |
304 | sizeof(b2))); | |
d3e51122 JHS |
305 | } |
306 | ||
307 | if (tb[TCA_IFE_SMAC]) { | |
308 | has_optional = 1; | |
8744c5d3 RM |
309 | print_string(PRINT_ANY, "src", "src %s ", |
310 | ll_addr_n2a(RTA_DATA(tb[TCA_IFE_SMAC]), | |
311 | RTA_PAYLOAD(tb[TCA_IFE_SMAC]), 0, b2, | |
312 | sizeof(b2))); | |
d3e51122 JHS |
313 | } |
314 | ||
8744c5d3 RM |
315 | print_string(PRINT_FP, NULL, "%s", _SL_); |
316 | print_uint(PRINT_ANY, "index", "\t index %u", p->index); | |
317 | print_int(PRINT_ANY, "ref", " ref %d", p->refcnt); | |
318 | print_int(PRINT_ANY, "bind", " bind %d", p->bindcnt); | |
319 | ||
d3e51122 JHS |
320 | if (show_stats) { |
321 | if (tb[TCA_IFE_TM]) { | |
322 | struct tcf_t *tm = RTA_DATA(tb[TCA_IFE_TM]); | |
323 | ||
324 | print_tm(f, tm); | |
325 | } | |
326 | } | |
327 | ||
8744c5d3 | 328 | print_string(PRINT_FP, NULL, "%s", _SL_); |
d3e51122 JHS |
329 | |
330 | return 0; | |
331 | } | |
332 | ||
333 | struct action_util ife_action_util = { | |
334 | .id = "ife", | |
335 | .parse_aopt = parse_ife, | |
336 | .print_aopt = print_ife, | |
337 | }; |