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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, | |
8589eb4e | 31 | "Usage:... ife {decode|encode} [{ALLOW|USE} ATTR] [dst DMAC] [src SMAC] [type TYPE] [CONTROL] [index INDEX]\n" |
d3e51122 JHS |
32 | "\tALLOW := Encode direction. Allows encoding specified metadata\n" |
33 | "\t\t e.g \"allow mark\"\n" | |
34 | "\tUSE := Encode direction. Enforce Static encoding of specified metadata\n" | |
35 | "\t\t e.g \"use mark 0x12\"\n" | |
1b600f4b | 36 | "\tATTR := mark (32-bit), prio (32-bit), tcindex (16-bit)\n" |
d3e51122 JHS |
37 | "\tDMAC := 6 byte Destination MAC address to encode\n" |
38 | "\tSMAC := optional 6 byte Source MAC address to encode\n" | |
39 | "\tTYPE := optional 16 bit ethertype to encode\n" | |
40 | "\tCONTROL := reclassify|pipe|drop|continue|ok\n" | |
8589eb4e MC |
41 | "\tINDEX := optional IFE table index value used\n" |
42 | "encode is used for sending IFE packets\n" | |
43 | "decode is used for receiving IFE packets\n"); | |
d3e51122 JHS |
44 | } |
45 | ||
46 | static void ife_usage(void) | |
47 | { | |
48 | ife_explain(); | |
49 | exit(-1); | |
50 | } | |
51 | ||
52 | static int parse_ife(struct action_util *a, int *argc_p, char ***argv_p, | |
53 | int tca_id, struct nlmsghdr *n) | |
54 | { | |
55 | int argc = *argc_p; | |
56 | char **argv = *argv_p; | |
57 | int ok = 0; | |
e67aba55 | 58 | struct tc_ife p = { 0 }; |
d3e51122 JHS |
59 | struct rtattr *tail; |
60 | struct rtattr *tail2; | |
61 | char dbuf[ETH_ALEN]; | |
62 | char sbuf[ETH_ALEN]; | |
63 | __u16 ife_type = 0; | |
bf338b60 | 64 | int user_type = 0; |
d3e51122 JHS |
65 | __u32 ife_prio = 0; |
66 | __u32 ife_prio_v = 0; | |
67 | __u32 ife_mark = 0; | |
68 | __u32 ife_mark_v = 0; | |
8da6ff35 JHS |
69 | __u16 ife_tcindex = 0; |
70 | __u16 ife_tcindex_v = 0; | |
d3e51122 JHS |
71 | char *daddr = NULL; |
72 | char *saddr = NULL; | |
73 | ||
d3e51122 JHS |
74 | if (argc <= 0) |
75 | return -1; | |
76 | ||
77 | while (argc > 0) { | |
78 | if (matches(*argv, "ife") == 0) { | |
79 | NEXT_ARG(); | |
80 | continue; | |
81 | } else if (matches(*argv, "decode") == 0) { | |
82 | p.flags = IFE_DECODE; /* readability aid */ | |
83 | ok++; | |
84 | } else if (matches(*argv, "encode") == 0) { | |
85 | p.flags = IFE_ENCODE; | |
86 | ok++; | |
87 | } else if (matches(*argv, "allow") == 0) { | |
88 | NEXT_ARG(); | |
89 | if (matches(*argv, "mark") == 0) { | |
90 | ife_mark = IFE_META_SKBMARK; | |
91 | } else if (matches(*argv, "prio") == 0) { | |
92 | ife_prio = IFE_META_PRIO; | |
8da6ff35 | 93 | } else if (matches(*argv, "tcindex") == 0) { |
25a24934 | 94 | ife_tcindex = IFE_META_TCINDEX; |
d3e51122 | 95 | } else { |
0aaf62fc | 96 | invarg("Illegal meta define", *argv); |
d3e51122 JHS |
97 | } |
98 | } else if (matches(*argv, "use") == 0) { | |
99 | NEXT_ARG(); | |
100 | if (matches(*argv, "mark") == 0) { | |
101 | NEXT_ARG(); | |
102 | if (get_u32(&ife_mark_v, *argv, 0)) | |
103 | invarg("ife mark val is invalid", | |
104 | *argv); | |
105 | } else if (matches(*argv, "prio") == 0) { | |
106 | NEXT_ARG(); | |
107 | if (get_u32(&ife_prio_v, *argv, 0)) | |
108 | invarg("ife prio val is invalid", | |
109 | *argv); | |
8da6ff35 JHS |
110 | } else if (matches(*argv, "tcindex") == 0) { |
111 | NEXT_ARG(); | |
112 | if (get_u16(&ife_tcindex_v, *argv, 0)) | |
113 | invarg("ife tcindex val is invalid", | |
114 | *argv); | |
d3e51122 | 115 | } else { |
0aaf62fc | 116 | invarg("Illegal meta use type", *argv); |
d3e51122 JHS |
117 | } |
118 | } else if (matches(*argv, "type") == 0) { | |
119 | NEXT_ARG(); | |
120 | if (get_u16(&ife_type, *argv, 0)) | |
121 | invarg("ife type is invalid", *argv); | |
664f35aa | 122 | fprintf(stderr, "IFE type 0x%04X\n", ife_type); |
bf338b60 | 123 | user_type = 1; |
d3e51122 JHS |
124 | } else if (matches(*argv, "dst") == 0) { |
125 | NEXT_ARG(); | |
126 | daddr = *argv; | |
127 | if (sscanf(daddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", | |
128 | dbuf, dbuf + 1, dbuf + 2, | |
129 | dbuf + 3, dbuf + 4, dbuf + 5) != 6) { | |
0aaf62fc | 130 | invarg("Invalid mac address", *argv); |
d3e51122 JHS |
131 | } |
132 | fprintf(stderr, "dst MAC address <%s>\n", daddr); | |
133 | ||
134 | } else if (matches(*argv, "src") == 0) { | |
135 | NEXT_ARG(); | |
136 | saddr = *argv; | |
137 | if (sscanf(saddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", | |
138 | sbuf, sbuf + 1, sbuf + 2, | |
139 | sbuf + 3, sbuf + 4, sbuf + 5) != 6) { | |
0aaf62fc | 140 | invarg("Invalid mac address", *argv); |
d3e51122 JHS |
141 | } |
142 | fprintf(stderr, "src MAC address <%s>\n", saddr); | |
143 | } else if (matches(*argv, "help") == 0) { | |
144 | ife_usage(); | |
145 | } else { | |
146 | break; | |
147 | } | |
148 | ||
149 | argc--; | |
150 | argv++; | |
151 | } | |
152 | ||
e67aba55 | 153 | parse_action_control_dflt(&argc, &argv, &p.action, false, TC_ACT_PIPE); |
d3e51122 JHS |
154 | |
155 | if (argc) { | |
156 | if (matches(*argv, "index") == 0) { | |
157 | NEXT_ARG(); | |
9a56cca3 | 158 | if (get_u32(&p.index, *argv, 0)) { |
d3e51122 JHS |
159 | fprintf(stderr, "ife: Illegal \"index\"\n"); |
160 | return -1; | |
161 | } | |
a78a2dba | 162 | ok++; |
d3e51122 JHS |
163 | argc--; |
164 | argv++; | |
165 | } | |
166 | } | |
167 | ||
168 | if (!ok) { | |
169 | fprintf(stderr, "IFE requires decode/encode specified\n"); | |
170 | ife_usage(); | |
171 | } | |
172 | ||
c14f9d92 | 173 | tail = addattr_nest(n, MAX_MSG, tca_id); |
d3e51122 JHS |
174 | addattr_l(n, MAX_MSG, TCA_IFE_PARMS, &p, sizeof(p)); |
175 | ||
176 | if (!(p.flags & IFE_ENCODE)) | |
177 | goto skip_encode; | |
178 | ||
179 | if (daddr) | |
180 | addattr_l(n, MAX_MSG, TCA_IFE_DMAC, dbuf, ETH_ALEN); | |
bf338b60 | 181 | if (user_type) |
d3e51122 | 182 | addattr_l(n, MAX_MSG, TCA_IFE_TYPE, &ife_type, 2); |
38060de1 AA |
183 | else |
184 | fprintf(stderr, "IFE type 0x%04X\n", ETH_P_IFE); | |
d3e51122 JHS |
185 | if (saddr) |
186 | addattr_l(n, MAX_MSG, TCA_IFE_SMAC, sbuf, ETH_ALEN); | |
187 | ||
c14f9d92 | 188 | tail2 = addattr_nest(n, MAX_MSG, TCA_IFE_METALST); |
d3e51122 JHS |
189 | if (ife_mark || ife_mark_v) { |
190 | if (ife_mark_v) | |
191 | addattr_l(n, MAX_MSG, IFE_META_SKBMARK, &ife_mark_v, 4); | |
192 | else | |
193 | addattr_l(n, MAX_MSG, IFE_META_SKBMARK, NULL, 0); | |
194 | } | |
195 | if (ife_prio || ife_prio_v) { | |
196 | if (ife_prio_v) | |
197 | addattr_l(n, MAX_MSG, IFE_META_PRIO, &ife_prio_v, 4); | |
198 | else | |
199 | addattr_l(n, MAX_MSG, IFE_META_PRIO, NULL, 0); | |
200 | } | |
8da6ff35 JHS |
201 | if (ife_tcindex || ife_tcindex_v) { |
202 | if (ife_tcindex_v) | |
203 | addattr_l(n, MAX_MSG, IFE_META_TCINDEX, &ife_tcindex_v, | |
204 | 2); | |
205 | else | |
206 | addattr_l(n, MAX_MSG, IFE_META_TCINDEX, NULL, 0); | |
207 | } | |
d3e51122 | 208 | |
c14f9d92 | 209 | addattr_nest_end(n, tail2); |
d3e51122 JHS |
210 | |
211 | skip_encode: | |
c14f9d92 | 212 | addattr_nest_end(n, tail); |
d3e51122 JHS |
213 | |
214 | *argc_p = argc; | |
215 | *argv_p = argv; | |
216 | return 0; | |
217 | } | |
218 | ||
219 | static int print_ife(struct action_util *au, FILE *f, struct rtattr *arg) | |
220 | { | |
d5ddb441 | 221 | struct tc_ife *p; |
d3e51122 JHS |
222 | struct rtattr *tb[TCA_IFE_MAX + 1]; |
223 | __u16 ife_type = 0; | |
224 | __u32 mmark = 0; | |
8da6ff35 | 225 | __u16 mtcindex = 0; |
d3e51122 JHS |
226 | __u32 mprio = 0; |
227 | int has_optional = 0; | |
d3e51122 JHS |
228 | SPRINT_BUF(b2); |
229 | ||
230 | if (arg == NULL) | |
231 | return -1; | |
232 | ||
233 | parse_rtattr_nested(tb, TCA_IFE_MAX, arg); | |
234 | ||
235 | if (tb[TCA_IFE_PARMS] == NULL) { | |
d5ddb441 | 236 | fprintf(stderr, "Missing ife parameters\n"); |
d3e51122 JHS |
237 | return -1; |
238 | } | |
239 | p = RTA_DATA(tb[TCA_IFE_PARMS]); | |
240 | ||
8744c5d3 | 241 | print_string(PRINT_ANY, "kind", "%s ", "ife"); |
53d34eb6 | 242 | print_string(PRINT_ANY, "mode", "%s ", |
8744c5d3 | 243 | p->flags & IFE_ENCODE ? "encode" : "decode"); |
e67aba55 | 244 | print_action_control(f, "action ", p->action, " "); |
d3e51122 JHS |
245 | |
246 | if (tb[TCA_IFE_TYPE]) { | |
247 | ife_type = rta_getattr_u16(tb[TCA_IFE_TYPE]); | |
248 | has_optional = 1; | |
90c5c969 | 249 | print_0xhex(PRINT_ANY, "type", "type %#llX ", ife_type); |
d3e51122 JHS |
250 | } |
251 | ||
252 | if (has_optional) | |
8744c5d3 | 253 | print_string(PRINT_FP, NULL, "%s\t", _SL_); |
d3e51122 JHS |
254 | |
255 | if (tb[TCA_IFE_METALST]) { | |
256 | struct rtattr *metalist[IFE_META_MAX + 1]; | |
257 | int len = 0; | |
258 | ||
259 | parse_rtattr_nested(metalist, IFE_META_MAX, | |
260 | tb[TCA_IFE_METALST]); | |
261 | ||
262 | if (metalist[IFE_META_SKBMARK]) { | |
263 | len = RTA_PAYLOAD(metalist[IFE_META_SKBMARK]); | |
264 | if (len) { | |
265 | mmark = rta_getattr_u32(metalist[IFE_META_SKBMARK]); | |
8744c5d3 RM |
266 | print_uint(PRINT_ANY, "mark", "use mark %u ", |
267 | mmark); | |
d3e51122 | 268 | } else |
8744c5d3 RM |
269 | print_string(PRINT_ANY, "mark", "%s mark ", |
270 | "allow"); | |
d3e51122 JHS |
271 | } |
272 | ||
8da6ff35 JHS |
273 | if (metalist[IFE_META_TCINDEX]) { |
274 | len = RTA_PAYLOAD(metalist[IFE_META_TCINDEX]); | |
d3e51122 | 275 | if (len) { |
8da6ff35 JHS |
276 | mtcindex = |
277 | rta_getattr_u16(metalist[IFE_META_TCINDEX]); | |
8744c5d3 RM |
278 | print_uint(PRINT_ANY, "tcindex", |
279 | "use tcindex %u ", mtcindex); | |
d3e51122 | 280 | } else |
8744c5d3 RM |
281 | print_string(PRINT_ANY, "tcindex", |
282 | "%s tcindex ", "allow"); | |
d3e51122 JHS |
283 | } |
284 | ||
285 | if (metalist[IFE_META_PRIO]) { | |
286 | len = RTA_PAYLOAD(metalist[IFE_META_PRIO]); | |
287 | if (len) { | |
288 | mprio = rta_getattr_u32(metalist[IFE_META_PRIO]); | |
8744c5d3 RM |
289 | print_uint(PRINT_ANY, "prio", "use prio %u ", |
290 | mprio); | |
d3e51122 | 291 | } else |
8744c5d3 RM |
292 | print_string(PRINT_ANY, "prio", "%s prio ", |
293 | "allow"); | |
d3e51122 JHS |
294 | } |
295 | ||
296 | } | |
297 | ||
298 | if (tb[TCA_IFE_DMAC]) { | |
299 | has_optional = 1; | |
8744c5d3 RM |
300 | print_string(PRINT_ANY, "dst", "dst %s ", |
301 | ll_addr_n2a(RTA_DATA(tb[TCA_IFE_DMAC]), | |
302 | RTA_PAYLOAD(tb[TCA_IFE_DMAC]), 0, b2, | |
303 | sizeof(b2))); | |
d3e51122 JHS |
304 | } |
305 | ||
306 | if (tb[TCA_IFE_SMAC]) { | |
307 | has_optional = 1; | |
8744c5d3 RM |
308 | print_string(PRINT_ANY, "src", "src %s ", |
309 | ll_addr_n2a(RTA_DATA(tb[TCA_IFE_SMAC]), | |
310 | RTA_PAYLOAD(tb[TCA_IFE_SMAC]), 0, b2, | |
311 | sizeof(b2))); | |
d3e51122 JHS |
312 | } |
313 | ||
8744c5d3 RM |
314 | print_string(PRINT_FP, NULL, "%s", _SL_); |
315 | print_uint(PRINT_ANY, "index", "\t index %u", p->index); | |
316 | print_int(PRINT_ANY, "ref", " ref %d", p->refcnt); | |
317 | print_int(PRINT_ANY, "bind", " bind %d", p->bindcnt); | |
318 | ||
d3e51122 JHS |
319 | if (show_stats) { |
320 | if (tb[TCA_IFE_TM]) { | |
321 | struct tcf_t *tm = RTA_DATA(tb[TCA_IFE_TM]); | |
322 | ||
323 | print_tm(f, tm); | |
324 | } | |
325 | } | |
326 | ||
8744c5d3 | 327 | print_string(PRINT_FP, NULL, "%s", _SL_); |
d3e51122 JHS |
328 | |
329 | return 0; | |
330 | } | |
331 | ||
332 | struct action_util ife_action_util = { | |
333 | .id = "ife", | |
334 | .parse_aopt = parse_ife, | |
335 | .print_aopt = print_ife, | |
336 | }; |