2 * m_ife.c IFE actions module
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.
9 * Authors: J Hadi Salim (jhs@mojatatu.com)
17 #include <sys/socket.h>
18 #include <netinet/in.h>
19 #include <arpa/inet.h>
21 #include <linux/netdevice.h>
26 #include <linux/tc_act/tc_ife.h>
28 static void ife_explain(void)
31 "Usage:... ife {decode|encode} [{ALLOW|USE} ATTR] [dst DMAC] [src SMAC] [type TYPE] [CONTROL] [index INDEX]\n"
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"
36 "\tATTR := mark (32-bit), prio (32-bit), tcindex (16-bit)\n"
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"
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");
46 static void ife_usage(void)
52 static int parse_ife(struct action_util *a, int *argc_p, char ***argv_p,
53 int tca_id, struct nlmsghdr *n)
56 char **argv = *argv_p;
58 struct tc_ife p = { 0 };
69 __u16 ife_tcindex = 0;
70 __u16 ife_tcindex_v = 0;
78 if (matches(*argv, "ife") == 0) {
81 } else if (matches(*argv, "decode") == 0) {
82 p.flags = IFE_DECODE; /* readability aid */
84 } else if (matches(*argv, "encode") == 0) {
87 } else if (matches(*argv, "allow") == 0) {
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;
93 } else if (matches(*argv, "tcindex") == 0) {
94 ife_tcindex = IFE_META_TCINDEX;
96 invarg("Illegal meta define", *argv);
98 } else if (matches(*argv, "use") == 0) {
100 if (matches(*argv, "mark") == 0) {
102 if (get_u32(&ife_mark_v, *argv, 0))
103 invarg("ife mark val is invalid",
105 } else if (matches(*argv, "prio") == 0) {
107 if (get_u32(&ife_prio_v, *argv, 0))
108 invarg("ife prio val is invalid",
110 } else if (matches(*argv, "tcindex") == 0) {
112 if (get_u16(&ife_tcindex_v, *argv, 0))
113 invarg("ife tcindex val is invalid",
116 invarg("Illegal meta use type", *argv);
118 } else if (matches(*argv, "type") == 0) {
120 if (get_u16(&ife_type, *argv, 0))
121 invarg("ife type is invalid", *argv);
122 fprintf(stderr, "IFE type 0x%04X\n", ife_type);
124 } else if (matches(*argv, "dst") == 0) {
127 if (sscanf(daddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
128 dbuf, dbuf + 1, dbuf + 2,
129 dbuf + 3, dbuf + 4, dbuf + 5) != 6) {
130 invarg("Invalid mac address", *argv);
132 fprintf(stderr, "dst MAC address <%s>\n", daddr);
134 } else if (matches(*argv, "src") == 0) {
137 if (sscanf(saddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
138 sbuf, sbuf + 1, sbuf + 2,
139 sbuf + 3, sbuf + 4, sbuf + 5) != 6) {
140 invarg("Invalid mac address", *argv);
142 fprintf(stderr, "src MAC address <%s>\n", saddr);
143 } else if (matches(*argv, "help") == 0) {
153 parse_action_control_dflt(&argc, &argv, &p.action, false, TC_ACT_PIPE);
156 if (matches(*argv, "index") == 0) {
158 if (get_u32(&p.index, *argv, 0)) {
159 fprintf(stderr, "ife: Illegal \"index\"\n");
169 fprintf(stderr, "IFE requires decode/encode specified\n");
173 tail = addattr_nest(n, MAX_MSG, tca_id);
174 addattr_l(n, MAX_MSG, TCA_IFE_PARMS, &p, sizeof(p));
176 if (!(p.flags & IFE_ENCODE))
180 addattr_l(n, MAX_MSG, TCA_IFE_DMAC, dbuf, ETH_ALEN);
182 addattr_l(n, MAX_MSG, TCA_IFE_TYPE, &ife_type, 2);
184 fprintf(stderr, "IFE type 0x%04X\n", ETH_P_IFE);
186 addattr_l(n, MAX_MSG, TCA_IFE_SMAC, sbuf, ETH_ALEN);
188 tail2 = addattr_nest(n, MAX_MSG, TCA_IFE_METALST);
189 if (ife_mark || ife_mark_v) {
191 addattr_l(n, MAX_MSG, IFE_META_SKBMARK, &ife_mark_v, 4);
193 addattr_l(n, MAX_MSG, IFE_META_SKBMARK, NULL, 0);
195 if (ife_prio || ife_prio_v) {
197 addattr_l(n, MAX_MSG, IFE_META_PRIO, &ife_prio_v, 4);
199 addattr_l(n, MAX_MSG, IFE_META_PRIO, NULL, 0);
201 if (ife_tcindex || ife_tcindex_v) {
203 addattr_l(n, MAX_MSG, IFE_META_TCINDEX, &ife_tcindex_v,
206 addattr_l(n, MAX_MSG, IFE_META_TCINDEX, NULL, 0);
209 addattr_nest_end(n, tail2);
212 addattr_nest_end(n, tail);
219 static int print_ife(struct action_util *au, FILE *f, struct rtattr *arg)
222 struct rtattr *tb[TCA_IFE_MAX + 1];
227 int has_optional = 0;
233 parse_rtattr_nested(tb, TCA_IFE_MAX, arg);
235 if (tb[TCA_IFE_PARMS] == NULL) {
236 fprintf(stderr, "Missing ife parameters\n");
239 p = RTA_DATA(tb[TCA_IFE_PARMS]);
241 print_string(PRINT_ANY, "kind", "%s ", "ife");
242 print_string(PRINT_ANY, "mode", "%s ",
243 p->flags & IFE_ENCODE ? "encode" : "decode");
244 print_action_control(f, "action ", p->action, " ");
246 if (tb[TCA_IFE_TYPE]) {
247 ife_type = rta_getattr_u16(tb[TCA_IFE_TYPE]);
249 print_0xhex(PRINT_ANY, "type", "type %#llX ", ife_type);
253 print_string(PRINT_FP, NULL, "%s\t", _SL_);
255 if (tb[TCA_IFE_METALST]) {
256 struct rtattr *metalist[IFE_META_MAX + 1];
259 parse_rtattr_nested(metalist, IFE_META_MAX,
260 tb[TCA_IFE_METALST]);
262 if (metalist[IFE_META_SKBMARK]) {
263 len = RTA_PAYLOAD(metalist[IFE_META_SKBMARK]);
265 mmark = rta_getattr_u32(metalist[IFE_META_SKBMARK]);
266 print_uint(PRINT_ANY, "mark", "use mark %u ",
269 print_string(PRINT_ANY, "mark", "%s mark ",
273 if (metalist[IFE_META_TCINDEX]) {
274 len = RTA_PAYLOAD(metalist[IFE_META_TCINDEX]);
277 rta_getattr_u16(metalist[IFE_META_TCINDEX]);
278 print_uint(PRINT_ANY, "tcindex",
279 "use tcindex %u ", mtcindex);
281 print_string(PRINT_ANY, "tcindex",
282 "%s tcindex ", "allow");
285 if (metalist[IFE_META_PRIO]) {
286 len = RTA_PAYLOAD(metalist[IFE_META_PRIO]);
288 mprio = rta_getattr_u32(metalist[IFE_META_PRIO]);
289 print_uint(PRINT_ANY, "prio", "use prio %u ",
292 print_string(PRINT_ANY, "prio", "%s prio ",
298 if (tb[TCA_IFE_DMAC]) {
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,
306 if (tb[TCA_IFE_SMAC]) {
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,
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);
320 if (tb[TCA_IFE_TM]) {
321 struct tcf_t *tm = RTA_DATA(tb[TCA_IFE_TM]);
327 print_string(PRINT_FP, NULL, "%s", _SL_);
332 struct action_util ife_action_util = {
334 .parse_aopt = parse_ife,
335 .print_aopt = print_ife,