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Re-enable arbitrary IPv6 addresses as outer ip4-in-ip6 tunnel source address
[openwrt/openwrt.git] / target / linux / generic / pending-4.9 / 666-Add-support-for-MAP-E-FMRs-mesh-mode.patch
1 From: Steven Barth <steven@midlink.org>
2 Subject: Add support for MAP-E FMRs (mesh mode)
3
4 MAP-E FMRs (draft-ietf-softwire-map-10) are rules for IPv4-communication
5 between MAP CEs (mesh mode) without the need to forward such data to a
6 border relay. This is similar to how 6rd works but for IPv4 over IPv6.
7
8 Signed-off-by: Steven Barth <cyrus@openwrt.org>
9 ---
10 include/net/ip6_tunnel.h | 13 ++
11 include/uapi/linux/if_tunnel.h | 13 ++
12 net/ipv6/ip6_tunnel.c | 276 +++++++++++++++++++++++++++++++++++++++--
13 3 files changed, 291 insertions(+), 11 deletions(-)
14
15 --- a/include/net/ip6_tunnel.h
16 +++ b/include/net/ip6_tunnel.h
17 @@ -17,6 +17,18 @@
18 /* determine capability on a per-packet basis */
19 #define IP6_TNL_F_CAP_PER_PACKET 0x40000
20
21 +/* IPv6 tunnel FMR */
22 +struct __ip6_tnl_fmr {
23 + struct __ip6_tnl_fmr *next; /* next fmr in list */
24 + struct in6_addr ip6_prefix;
25 + struct in_addr ip4_prefix;
26 +
27 + __u8 ip6_prefix_len;
28 + __u8 ip4_prefix_len;
29 + __u8 ea_len;
30 + __u8 offset;
31 +};
32 +
33 struct __ip6_tnl_parm {
34 char name[IFNAMSIZ]; /* name of tunnel device */
35 int link; /* ifindex of underlying L2 interface */
36 @@ -28,6 +40,7 @@ struct __ip6_tnl_parm {
37 __u32 flags; /* tunnel flags */
38 struct in6_addr laddr; /* local tunnel end-point address */
39 struct in6_addr raddr; /* remote tunnel end-point address */
40 + struct __ip6_tnl_fmr *fmrs; /* FMRs */
41
42 __be16 i_flags;
43 __be16 o_flags;
44 --- a/include/uapi/linux/if_tunnel.h
45 +++ b/include/uapi/linux/if_tunnel.h
46 @@ -75,10 +75,23 @@ enum {
47 IFLA_IPTUN_ENCAP_SPORT,
48 IFLA_IPTUN_ENCAP_DPORT,
49 IFLA_IPTUN_COLLECT_METADATA,
50 + IFLA_IPTUN_FMRS,
51 __IFLA_IPTUN_MAX,
52 };
53 #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
54
55 +enum {
56 + IFLA_IPTUN_FMR_UNSPEC,
57 + IFLA_IPTUN_FMR_IP6_PREFIX,
58 + IFLA_IPTUN_FMR_IP4_PREFIX,
59 + IFLA_IPTUN_FMR_IP6_PREFIX_LEN,
60 + IFLA_IPTUN_FMR_IP4_PREFIX_LEN,
61 + IFLA_IPTUN_FMR_EA_LEN,
62 + IFLA_IPTUN_FMR_OFFSET,
63 + __IFLA_IPTUN_FMR_MAX,
64 +};
65 +#define IFLA_IPTUN_FMR_MAX (__IFLA_IPTUN_FMR_MAX - 1)
66 +
67 enum tunnel_encap_types {
68 TUNNEL_ENCAP_NONE,
69 TUNNEL_ENCAP_FOU,
70 --- a/net/ipv6/ip6_tunnel.c
71 +++ b/net/ipv6/ip6_tunnel.c
72 @@ -16,6 +16,8 @@
73 * as published by the Free Software Foundation; either version
74 * 2 of the License, or (at your option) any later version.
75 *
76 + * Changes:
77 + * Steven Barth <cyrus@openwrt.org>: MAP-E FMR support
78 */
79
80 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
81 @@ -72,9 +74,9 @@ static bool log_ecn_error = true;
82 module_param(log_ecn_error, bool, 0644);
83 MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
84
85 -static u32 HASH(const struct in6_addr *addr1, const struct in6_addr *addr2)
86 +static u32 HASH(const struct in6_addr *addr)
87 {
88 - u32 hash = ipv6_addr_hash(addr1) ^ ipv6_addr_hash(addr2);
89 + u32 hash = ipv6_addr_hash(addr);
90
91 return hash_32(hash, IP6_TUNNEL_HASH_SIZE_SHIFT);
92 }
93 @@ -141,20 +143,29 @@ static struct net_device_stats *ip6_get_
94 static struct ip6_tnl *
95 ip6_tnl_lookup(struct net *net, const struct in6_addr *remote, const struct in6_addr *local)
96 {
97 - unsigned int hash = HASH(remote, local);
98 + unsigned int hash = HASH(local);
99 struct ip6_tnl *t;
100 struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
101 struct in6_addr any;
102 + struct __ip6_tnl_fmr *fmr;
103
104 for_each_ip6_tunnel_rcu(ip6n->tnls_r_l[hash]) {
105 - if (ipv6_addr_equal(local, &t->parms.laddr) &&
106 - ipv6_addr_equal(remote, &t->parms.raddr) &&
107 - (t->dev->flags & IFF_UP))
108 + if (!ipv6_addr_equal(local, &t->parms.laddr) ||
109 + !(t->dev->flags & IFF_UP))
110 + continue;
111 +
112 + if (ipv6_addr_equal(remote, &t->parms.raddr))
113 return t;
114 +
115 + for (fmr = t->parms.fmrs; fmr; fmr = fmr->next) {
116 + if (ipv6_prefix_equal(remote, &fmr->ip6_prefix,
117 + fmr->ip6_prefix_len))
118 + return t;
119 + }
120 }
121
122 memset(&any, 0, sizeof(any));
123 - hash = HASH(&any, local);
124 + hash = HASH(local);
125 for_each_ip6_tunnel_rcu(ip6n->tnls_r_l[hash]) {
126 if (ipv6_addr_equal(local, &t->parms.laddr) &&
127 ipv6_addr_any(&t->parms.raddr) &&
128 @@ -162,7 +173,7 @@ ip6_tnl_lookup(struct net *net, const st
129 return t;
130 }
131
132 - hash = HASH(remote, &any);
133 + hash = HASH(&any);
134 for_each_ip6_tunnel_rcu(ip6n->tnls_r_l[hash]) {
135 if (ipv6_addr_equal(remote, &t->parms.raddr) &&
136 ipv6_addr_any(&t->parms.laddr) &&
137 @@ -202,7 +213,7 @@ ip6_tnl_bucket(struct ip6_tnl_net *ip6n,
138
139 if (!ipv6_addr_any(remote) || !ipv6_addr_any(local)) {
140 prio = 1;
141 - h = HASH(remote, local);
142 + h = HASH(local);
143 }
144 return &ip6n->tnls[prio][h];
145 }
146 @@ -384,6 +395,12 @@ ip6_tnl_dev_uninit(struct net_device *de
147 struct net *net = t->net;
148 struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
149
150 + while (t->parms.fmrs) {
151 + struct __ip6_tnl_fmr *next = t->parms.fmrs->next;
152 + kfree(t->parms.fmrs);
153 + t->parms.fmrs = next;
154 + }
155 +
156 if (dev == ip6n->fb_tnl_dev)
157 RCU_INIT_POINTER(ip6n->tnls_wc[0], NULL);
158 else
159 @@ -780,6 +797,107 @@ int ip6_tnl_rcv_ctl(struct ip6_tnl *t,
160 }
161 EXPORT_SYMBOL_GPL(ip6_tnl_rcv_ctl);
162
163 +/**
164 + * ip4ip6_fmr_calc - calculate target / source IPv6-address based on FMR
165 + * @dest: destination IPv6 address buffer
166 + * @skb: received socket buffer
167 + * @fmr: MAP FMR
168 + * @xmit: Calculate for xmit or rcv
169 + **/
170 +static void ip4ip6_fmr_calc(struct in6_addr *dest,
171 + const struct iphdr *iph, const uint8_t *end,
172 + const struct __ip6_tnl_fmr *fmr, bool xmit)
173 +{
174 + int psidlen = fmr->ea_len - (32 - fmr->ip4_prefix_len);
175 + u8 *portp = NULL;
176 + bool use_dest_addr;
177 + const struct iphdr *dsth = iph;
178 +
179 + if ((u8*)dsth >= end)
180 + return;
181 +
182 + /* find significant IP header */
183 + if (iph->protocol == IPPROTO_ICMP) {
184 + struct icmphdr *ih = (struct icmphdr*)(((u8*)dsth) + dsth->ihl * 4);
185 + if (ih && ((u8*)&ih[1]) <= end && (
186 + ih->type == ICMP_DEST_UNREACH ||
187 + ih->type == ICMP_SOURCE_QUENCH ||
188 + ih->type == ICMP_TIME_EXCEEDED ||
189 + ih->type == ICMP_PARAMETERPROB ||
190 + ih->type == ICMP_REDIRECT))
191 + dsth = (const struct iphdr*)&ih[1];
192 + }
193 +
194 + /* in xmit-path use dest port by default and source port only if
195 + this is an ICMP reply to something else; vice versa in rcv-path */
196 + use_dest_addr = (xmit && dsth == iph) || (!xmit && dsth != iph);
197 +
198 + /* get dst port */
199 + if (((u8*)&dsth[1]) <= end && (
200 + dsth->protocol == IPPROTO_UDP ||
201 + dsth->protocol == IPPROTO_TCP ||
202 + dsth->protocol == IPPROTO_SCTP ||
203 + dsth->protocol == IPPROTO_DCCP)) {
204 + /* for UDP, TCP, SCTP and DCCP source and dest port
205 + follow IPv4 header directly */
206 + portp = ((u8*)dsth) + dsth->ihl * 4;
207 +
208 + if (use_dest_addr)
209 + portp += sizeof(u16);
210 + } else if (iph->protocol == IPPROTO_ICMP) {
211 + struct icmphdr *ih = (struct icmphdr*)(((u8*)dsth) + dsth->ihl * 4);
212 +
213 + /* use icmp identifier as port */
214 + if (((u8*)&ih) <= end && (
215 + (use_dest_addr && (
216 + ih->type == ICMP_ECHOREPLY ||
217 + ih->type == ICMP_TIMESTAMPREPLY ||
218 + ih->type == ICMP_INFO_REPLY ||
219 + ih->type == ICMP_ADDRESSREPLY)) ||
220 + (!use_dest_addr && (
221 + ih->type == ICMP_ECHO ||
222 + ih->type == ICMP_TIMESTAMP ||
223 + ih->type == ICMP_INFO_REQUEST ||
224 + ih->type == ICMP_ADDRESS)
225 + )))
226 + portp = (u8*)&ih->un.echo.id;
227 + }
228 +
229 + if ((portp && &portp[2] <= end) || psidlen == 0) {
230 + int frombyte = fmr->ip6_prefix_len / 8;
231 + int fromrem = fmr->ip6_prefix_len % 8;
232 + int bytes = sizeof(struct in6_addr) - frombyte;
233 + const u32 *addr = (use_dest_addr) ? &iph->daddr : &iph->saddr;
234 + u64 eabits = ((u64)ntohl(*addr)) << (32 + fmr->ip4_prefix_len);
235 + u64 t = 0;
236 +
237 + /* extract PSID from port and add it to eabits */
238 + u16 psidbits = 0;
239 + if (psidlen > 0) {
240 + psidbits = ((u16)portp[0]) << 8 | ((u16)portp[1]);
241 + psidbits >>= 16 - psidlen - fmr->offset;
242 + psidbits = (u16)(psidbits << (16 - psidlen));
243 + eabits |= ((u64)psidbits) << (48 - (fmr->ea_len - psidlen));
244 + }
245 +
246 + /* rewrite destination address */
247 + *dest = fmr->ip6_prefix;
248 + memcpy(&dest->s6_addr[10], addr, sizeof(*addr));
249 + dest->s6_addr16[7] = htons(psidbits >> (16 - psidlen));
250 +
251 + if (bytes > sizeof(u64))
252 + bytes = sizeof(u64);
253 +
254 + /* insert eabits */
255 + memcpy(&t, &dest->s6_addr[frombyte], bytes);
256 + t = be64_to_cpu(t) & ~(((((u64)1) << fmr->ea_len) - 1)
257 + << (64 - fmr->ea_len - fromrem));
258 + t = cpu_to_be64(t | (eabits >> fromrem));
259 + memcpy(&dest->s6_addr[frombyte], &t, bytes);
260 + }
261 +}
262 +
263 +
264 static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb,
265 const struct tnl_ptk_info *tpi,
266 struct metadata_dst *tun_dst,
267 @@ -832,6 +950,27 @@ static int __ip6_tnl_rcv(struct ip6_tnl
268 skb_reset_network_header(skb);
269 memset(skb->cb, 0, sizeof(struct inet6_skb_parm));
270
271 + if (tpi->proto == htons(ETH_P_IP) && tunnel->parms.fmrs &&
272 + !ipv6_addr_equal(&ipv6h->saddr, &tunnel->parms.raddr)) {
273 + /* Packet didn't come from BR, so lookup FMR */
274 + struct __ip6_tnl_fmr *fmr;
275 + struct in6_addr expected = tunnel->parms.raddr;
276 + for (fmr = tunnel->parms.fmrs; fmr; fmr = fmr->next)
277 + if (ipv6_prefix_equal(&ipv6h->saddr,
278 + &fmr->ip6_prefix, fmr->ip6_prefix_len))
279 + break;
280 +
281 + /* Check that IPv6 matches IPv4 source to prevent spoofing */
282 + if (fmr)
283 + ip4ip6_fmr_calc(&expected, ip_hdr(skb),
284 + skb_tail_pointer(skb), fmr, false);
285 +
286 + if (!ipv6_addr_equal(&ipv6h->saddr, &expected)) {
287 + rcu_read_unlock();
288 + goto drop;
289 + }
290 + }
291 +
292 __skb_tunnel_rx(skb, tunnel->dev, tunnel->net);
293
294 err = dscp_ecn_decapsulate(tunnel, ipv6h, skb);
295 @@ -961,6 +1100,7 @@ static void init_tel_txopt(struct ipv6_t
296 opt->ops.opt_nflen = 8;
297 }
298
299 +
300 /**
301 * ip6_tnl_addr_conflict - compare packet addresses to tunnel's own
302 * @t: the outgoing tunnel device
303 @@ -1298,6 +1438,7 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, str
304 {
305 struct ip6_tnl *t = netdev_priv(dev);
306 struct ipv6hdr *ipv6h = ipv6_hdr(skb);
307 + struct __ip6_tnl_fmr *fmr;
308 int encap_limit = -1;
309 __u16 offset;
310 struct flowi6 fl6;
311 @@ -1356,6 +1497,18 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, str
312 fl6.flowi6_mark = skb->mark;
313 }
314
315 + /* try to find matching FMR */
316 + for (fmr = t->parms.fmrs; fmr; fmr = fmr->next) {
317 + unsigned mshift = 32 - fmr->ip4_prefix_len;
318 + if (ntohl(fmr->ip4_prefix.s_addr) >> mshift ==
319 + ntohl(ip_hdr(skb)->daddr) >> mshift)
320 + break;
321 + }
322 +
323 + /* change dstaddr according to FMR */
324 + if (fmr)
325 + ip4ip6_fmr_calc(&fl6.daddr, ip_hdr(skb), skb_tail_pointer(skb), fmr, true);
326 +
327 if (iptunnel_handle_offloads(skb, SKB_GSO_IPXIP6))
328 return -1;
329
330 @@ -1483,6 +1636,14 @@ ip6_tnl_change(struct ip6_tnl *t, const
331 t->parms.flowinfo = p->flowinfo;
332 t->parms.link = p->link;
333 t->parms.proto = p->proto;
334 +
335 + while (t->parms.fmrs) {
336 + struct __ip6_tnl_fmr *next = t->parms.fmrs->next;
337 + kfree(t->parms.fmrs);
338 + t->parms.fmrs = next;
339 + }
340 + t->parms.fmrs = p->fmrs;
341 +
342 dst_cache_reset(&t->dst_cache);
343 ip6_tnl_link_config(t);
344 return 0;
345 @@ -1521,6 +1682,7 @@ ip6_tnl_parm_from_user(struct __ip6_tnl_
346 p->flowinfo = u->flowinfo;
347 p->link = u->link;
348 p->proto = u->proto;
349 + p->fmrs = NULL;
350 memcpy(p->name, u->name, sizeof(u->name));
351 }
352
353 @@ -1898,6 +2060,15 @@ static int ip6_tnl_validate(struct nlatt
354 return 0;
355 }
356
357 +static const struct nla_policy ip6_tnl_fmr_policy[IFLA_IPTUN_FMR_MAX + 1] = {
358 + [IFLA_IPTUN_FMR_IP6_PREFIX] = { .len = sizeof(struct in6_addr) },
359 + [IFLA_IPTUN_FMR_IP4_PREFIX] = { .len = sizeof(struct in_addr) },
360 + [IFLA_IPTUN_FMR_IP6_PREFIX_LEN] = { .type = NLA_U8 },
361 + [IFLA_IPTUN_FMR_IP4_PREFIX_LEN] = { .type = NLA_U8 },
362 + [IFLA_IPTUN_FMR_EA_LEN] = { .type = NLA_U8 },
363 + [IFLA_IPTUN_FMR_OFFSET] = { .type = NLA_U8 }
364 +};
365 +
366 static void ip6_tnl_netlink_parms(struct nlattr *data[],
367 struct __ip6_tnl_parm *parms)
368 {
369 @@ -1932,6 +2103,46 @@ static void ip6_tnl_netlink_parms(struct
370
371 if (data[IFLA_IPTUN_COLLECT_METADATA])
372 parms->collect_md = true;
373 +
374 + if (data[IFLA_IPTUN_FMRS]) {
375 + unsigned rem;
376 + struct nlattr *fmr;
377 + nla_for_each_nested(fmr, data[IFLA_IPTUN_FMRS], rem) {
378 + struct nlattr *fmrd[IFLA_IPTUN_FMR_MAX + 1], *c;
379 + struct __ip6_tnl_fmr *nfmr;
380 +
381 + nla_parse_nested(fmrd, IFLA_IPTUN_FMR_MAX,
382 + fmr, ip6_tnl_fmr_policy);
383 +
384 + if (!(nfmr = kzalloc(sizeof(*nfmr), GFP_KERNEL)))
385 + continue;
386 +
387 + nfmr->offset = 6;
388 +
389 + if ((c = fmrd[IFLA_IPTUN_FMR_IP6_PREFIX]))
390 + nla_memcpy(&nfmr->ip6_prefix, fmrd[IFLA_IPTUN_FMR_IP6_PREFIX],
391 + sizeof(nfmr->ip6_prefix));
392 +
393 + if ((c = fmrd[IFLA_IPTUN_FMR_IP4_PREFIX]))
394 + nla_memcpy(&nfmr->ip4_prefix, fmrd[IFLA_IPTUN_FMR_IP4_PREFIX],
395 + sizeof(nfmr->ip4_prefix));
396 +
397 + if ((c = fmrd[IFLA_IPTUN_FMR_IP6_PREFIX_LEN]))
398 + nfmr->ip6_prefix_len = nla_get_u8(c);
399 +
400 + if ((c = fmrd[IFLA_IPTUN_FMR_IP4_PREFIX_LEN]))
401 + nfmr->ip4_prefix_len = nla_get_u8(c);
402 +
403 + if ((c = fmrd[IFLA_IPTUN_FMR_EA_LEN]))
404 + nfmr->ea_len = nla_get_u8(c);
405 +
406 + if ((c = fmrd[IFLA_IPTUN_FMR_OFFSET]))
407 + nfmr->offset = nla_get_u8(c);
408 +
409 + nfmr->next = parms->fmrs;
410 + parms->fmrs = nfmr;
411 + }
412 + }
413 }
414
415 static bool ip6_tnl_netlink_encap_parms(struct nlattr *data[],
416 @@ -2045,6 +2256,12 @@ static void ip6_tnl_dellink(struct net_d
417
418 static size_t ip6_tnl_get_size(const struct net_device *dev)
419 {
420 + const struct ip6_tnl *t = netdev_priv(dev);
421 + struct __ip6_tnl_fmr *c;
422 + int fmrs = 0;
423 + for (c = t->parms.fmrs; c; c = c->next)
424 + ++fmrs;
425 +
426 return
427 /* IFLA_IPTUN_LINK */
428 nla_total_size(4) +
429 @@ -2072,6 +2289,24 @@ static size_t ip6_tnl_get_size(const str
430 nla_total_size(2) +
431 /* IFLA_IPTUN_COLLECT_METADATA */
432 nla_total_size(0) +
433 + /* IFLA_IPTUN_FMRS */
434 + nla_total_size(0) +
435 + (
436 + /* nest */
437 + nla_total_size(0) +
438 + /* IFLA_IPTUN_FMR_IP6_PREFIX */
439 + nla_total_size(sizeof(struct in6_addr)) +
440 + /* IFLA_IPTUN_FMR_IP4_PREFIX */
441 + nla_total_size(sizeof(struct in_addr)) +
442 + /* IFLA_IPTUN_FMR_EA_LEN */
443 + nla_total_size(1) +
444 + /* IFLA_IPTUN_FMR_IP6_PREFIX_LEN */
445 + nla_total_size(1) +
446 + /* IFLA_IPTUN_FMR_IP4_PREFIX_LEN */
447 + nla_total_size(1) +
448 + /* IFLA_IPTUN_FMR_OFFSET */
449 + nla_total_size(1)
450 + ) * fmrs +
451 0;
452 }
453
454 @@ -2079,6 +2314,9 @@ static int ip6_tnl_fill_info(struct sk_b
455 {
456 struct ip6_tnl *tunnel = netdev_priv(dev);
457 struct __ip6_tnl_parm *parm = &tunnel->parms;
458 + struct __ip6_tnl_fmr *c;
459 + int fmrcnt = 0;
460 + struct nlattr *fmrs;
461
462 if (nla_put_u32(skb, IFLA_IPTUN_LINK, parm->link) ||
463 nla_put_in6_addr(skb, IFLA_IPTUN_LOCAL, &parm->laddr) ||
464 @@ -2087,9 +2325,27 @@ static int ip6_tnl_fill_info(struct sk_b
465 nla_put_u8(skb, IFLA_IPTUN_ENCAP_LIMIT, parm->encap_limit) ||
466 nla_put_be32(skb, IFLA_IPTUN_FLOWINFO, parm->flowinfo) ||
467 nla_put_u32(skb, IFLA_IPTUN_FLAGS, parm->flags) ||
468 - nla_put_u8(skb, IFLA_IPTUN_PROTO, parm->proto))
469 + nla_put_u8(skb, IFLA_IPTUN_PROTO, parm->proto) ||
470 + !(fmrs = nla_nest_start(skb, IFLA_IPTUN_FMRS)))
471 goto nla_put_failure;
472
473 + for (c = parm->fmrs; c; c = c->next) {
474 + struct nlattr *fmr = nla_nest_start(skb, ++fmrcnt);
475 + if (!fmr ||
476 + nla_put(skb, IFLA_IPTUN_FMR_IP6_PREFIX,
477 + sizeof(c->ip6_prefix), &c->ip6_prefix) ||
478 + nla_put(skb, IFLA_IPTUN_FMR_IP4_PREFIX,
479 + sizeof(c->ip4_prefix), &c->ip4_prefix) ||
480 + nla_put_u8(skb, IFLA_IPTUN_FMR_IP6_PREFIX_LEN, c->ip6_prefix_len) ||
481 + nla_put_u8(skb, IFLA_IPTUN_FMR_IP4_PREFIX_LEN, c->ip4_prefix_len) ||
482 + nla_put_u8(skb, IFLA_IPTUN_FMR_EA_LEN, c->ea_len) ||
483 + nla_put_u8(skb, IFLA_IPTUN_FMR_OFFSET, c->offset))
484 + goto nla_put_failure;
485 +
486 + nla_nest_end(skb, fmr);
487 + }
488 + nla_nest_end(skb, fmrs);
489 +
490 if (nla_put_u16(skb, IFLA_IPTUN_ENCAP_TYPE, tunnel->encap.type) ||
491 nla_put_be16(skb, IFLA_IPTUN_ENCAP_SPORT, tunnel->encap.sport) ||
492 nla_put_be16(skb, IFLA_IPTUN_ENCAP_DPORT, tunnel->encap.dport) ||
493 @@ -2127,6 +2383,7 @@ static const struct nla_policy ip6_tnl_p
494 [IFLA_IPTUN_ENCAP_SPORT] = { .type = NLA_U16 },
495 [IFLA_IPTUN_ENCAP_DPORT] = { .type = NLA_U16 },
496 [IFLA_IPTUN_COLLECT_METADATA] = { .type = NLA_FLAG },
497 + [IFLA_IPTUN_FMRS] = { .type = NLA_NESTED },
498 };
499
500 static struct rtnl_link_ops ip6_link_ops __read_mostly = {
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