1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/kernel.h>
3 #include <linux/init.h>
4 #include <linux/module.h>
5 #include <linux/seqlock.h>
6 #include <linux/netlink.h>
7 #include <linux/netfilter.h>
8 #include <linux/netfilter/nf_tables.h>
9 #include <net/netfilter/nf_tables.h>
10 #include <net/dst_metadata.h>
11 #include <net/ip_tunnels.h>
12 #include <net/vxlan.h>
13 #include <net/erspan.h>
14 #include <net/geneve.h>
17 enum nft_tunnel_keys key:8;
19 enum nft_tunnel_mode mode:8;
23 static void nft_tunnel_get_eval(const struct nft_expr *expr,
24 struct nft_regs *regs,
25 const struct nft_pktinfo *pkt)
27 const struct nft_tunnel *priv = nft_expr_priv(expr);
28 u32 *dest = ®s->data[priv->dreg];
29 struct ip_tunnel_info *tun_info;
31 tun_info = skb_tunnel_info(pkt->skb);
36 nft_reg_store8(dest, false);
39 if (priv->mode == NFT_TUNNEL_MODE_NONE ||
40 (priv->mode == NFT_TUNNEL_MODE_RX &&
41 !(tun_info->mode & IP_TUNNEL_INFO_TX)) ||
42 (priv->mode == NFT_TUNNEL_MODE_TX &&
43 (tun_info->mode & IP_TUNNEL_INFO_TX)))
44 nft_reg_store8(dest, true);
46 nft_reg_store8(dest, false);
50 regs->verdict.code = NFT_BREAK;
53 if (priv->mode == NFT_TUNNEL_MODE_NONE ||
54 (priv->mode == NFT_TUNNEL_MODE_RX &&
55 !(tun_info->mode & IP_TUNNEL_INFO_TX)) ||
56 (priv->mode == NFT_TUNNEL_MODE_TX &&
57 (tun_info->mode & IP_TUNNEL_INFO_TX)))
58 *dest = ntohl(tunnel_id_to_key32(tun_info->key.tun_id));
60 regs->verdict.code = NFT_BREAK;
64 regs->verdict.code = NFT_BREAK;
68 static const struct nla_policy nft_tunnel_policy[NFTA_TUNNEL_MAX + 1] = {
69 [NFTA_TUNNEL_KEY] = { .type = NLA_U32 },
70 [NFTA_TUNNEL_DREG] = { .type = NLA_U32 },
71 [NFTA_TUNNEL_MODE] = { .type = NLA_U32 },
74 static int nft_tunnel_get_init(const struct nft_ctx *ctx,
75 const struct nft_expr *expr,
76 const struct nlattr * const tb[])
78 struct nft_tunnel *priv = nft_expr_priv(expr);
81 if (!tb[NFTA_TUNNEL_KEY] ||
82 !tb[NFTA_TUNNEL_DREG])
85 priv->key = ntohl(nla_get_be32(tb[NFTA_TUNNEL_KEY]));
97 if (tb[NFTA_TUNNEL_MODE]) {
98 priv->mode = ntohl(nla_get_be32(tb[NFTA_TUNNEL_MODE]));
99 if (priv->mode > NFT_TUNNEL_MODE_MAX)
102 priv->mode = NFT_TUNNEL_MODE_NONE;
106 return nft_parse_register_store(ctx, tb[NFTA_TUNNEL_DREG], &priv->dreg,
107 NULL, NFT_DATA_VALUE, len);
110 static int nft_tunnel_get_dump(struct sk_buff *skb,
111 const struct nft_expr *expr)
113 const struct nft_tunnel *priv = nft_expr_priv(expr);
115 if (nla_put_be32(skb, NFTA_TUNNEL_KEY, htonl(priv->key)))
116 goto nla_put_failure;
117 if (nft_dump_register(skb, NFTA_TUNNEL_DREG, priv->dreg))
118 goto nla_put_failure;
119 if (nla_put_be32(skb, NFTA_TUNNEL_MODE, htonl(priv->mode)))
120 goto nla_put_failure;
127 static bool nft_tunnel_get_reduce(struct nft_regs_track *track,
128 const struct nft_expr *expr)
130 const struct nft_tunnel *priv = nft_expr_priv(expr);
131 const struct nft_tunnel *tunnel;
133 if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
134 nft_reg_track_update(track, expr, priv->dreg, priv->len);
138 tunnel = nft_expr_priv(track->regs[priv->dreg].selector);
139 if (priv->key != tunnel->key ||
140 priv->dreg != tunnel->dreg ||
141 priv->mode != tunnel->mode) {
142 nft_reg_track_update(track, expr, priv->dreg, priv->len);
146 if (!track->regs[priv->dreg].bitwise)
152 static struct nft_expr_type nft_tunnel_type;
153 static const struct nft_expr_ops nft_tunnel_get_ops = {
154 .type = &nft_tunnel_type,
155 .size = NFT_EXPR_SIZE(sizeof(struct nft_tunnel)),
156 .eval = nft_tunnel_get_eval,
157 .init = nft_tunnel_get_init,
158 .dump = nft_tunnel_get_dump,
159 .reduce = nft_tunnel_get_reduce,
162 static struct nft_expr_type nft_tunnel_type __read_mostly = {
164 .family = NFPROTO_NETDEV,
165 .ops = &nft_tunnel_get_ops,
166 .policy = nft_tunnel_policy,
167 .maxattr = NFTA_TUNNEL_MAX,
168 .owner = THIS_MODULE,
171 struct nft_tunnel_opts {
173 struct vxlan_metadata vxlan;
174 struct erspan_metadata erspan;
175 u8 data[IP_TUNNEL_OPTS_MAX];
181 struct nft_tunnel_obj {
182 struct metadata_dst *md;
183 struct nft_tunnel_opts opts;
186 static const struct nla_policy nft_tunnel_ip_policy[NFTA_TUNNEL_KEY_IP_MAX + 1] = {
187 [NFTA_TUNNEL_KEY_IP_SRC] = { .type = NLA_U32 },
188 [NFTA_TUNNEL_KEY_IP_DST] = { .type = NLA_U32 },
191 static int nft_tunnel_obj_ip_init(const struct nft_ctx *ctx,
192 const struct nlattr *attr,
193 struct ip_tunnel_info *info)
195 struct nlattr *tb[NFTA_TUNNEL_KEY_IP_MAX + 1];
198 err = nla_parse_nested_deprecated(tb, NFTA_TUNNEL_KEY_IP_MAX, attr,
199 nft_tunnel_ip_policy, NULL);
203 if (!tb[NFTA_TUNNEL_KEY_IP_DST])
206 if (tb[NFTA_TUNNEL_KEY_IP_SRC])
207 info->key.u.ipv4.src = nla_get_be32(tb[NFTA_TUNNEL_KEY_IP_SRC]);
208 if (tb[NFTA_TUNNEL_KEY_IP_DST])
209 info->key.u.ipv4.dst = nla_get_be32(tb[NFTA_TUNNEL_KEY_IP_DST]);
214 static const struct nla_policy nft_tunnel_ip6_policy[NFTA_TUNNEL_KEY_IP6_MAX + 1] = {
215 [NFTA_TUNNEL_KEY_IP6_SRC] = { .len = sizeof(struct in6_addr), },
216 [NFTA_TUNNEL_KEY_IP6_DST] = { .len = sizeof(struct in6_addr), },
217 [NFTA_TUNNEL_KEY_IP6_FLOWLABEL] = { .type = NLA_U32, }
220 static int nft_tunnel_obj_ip6_init(const struct nft_ctx *ctx,
221 const struct nlattr *attr,
222 struct ip_tunnel_info *info)
224 struct nlattr *tb[NFTA_TUNNEL_KEY_IP6_MAX + 1];
227 err = nla_parse_nested_deprecated(tb, NFTA_TUNNEL_KEY_IP6_MAX, attr,
228 nft_tunnel_ip6_policy, NULL);
232 if (!tb[NFTA_TUNNEL_KEY_IP6_DST])
235 if (tb[NFTA_TUNNEL_KEY_IP6_SRC]) {
236 memcpy(&info->key.u.ipv6.src,
237 nla_data(tb[NFTA_TUNNEL_KEY_IP6_SRC]),
238 sizeof(struct in6_addr));
240 if (tb[NFTA_TUNNEL_KEY_IP6_DST]) {
241 memcpy(&info->key.u.ipv6.dst,
242 nla_data(tb[NFTA_TUNNEL_KEY_IP6_DST]),
243 sizeof(struct in6_addr));
245 if (tb[NFTA_TUNNEL_KEY_IP6_FLOWLABEL])
246 info->key.label = nla_get_be32(tb[NFTA_TUNNEL_KEY_IP6_FLOWLABEL]);
248 info->mode |= IP_TUNNEL_INFO_IPV6;
253 static const struct nla_policy nft_tunnel_opts_vxlan_policy[NFTA_TUNNEL_KEY_VXLAN_MAX + 1] = {
254 [NFTA_TUNNEL_KEY_VXLAN_GBP] = { .type = NLA_U32 },
257 static int nft_tunnel_obj_vxlan_init(const struct nlattr *attr,
258 struct nft_tunnel_opts *opts)
260 struct nlattr *tb[NFTA_TUNNEL_KEY_VXLAN_MAX + 1];
263 err = nla_parse_nested_deprecated(tb, NFTA_TUNNEL_KEY_VXLAN_MAX, attr,
264 nft_tunnel_opts_vxlan_policy, NULL);
268 if (!tb[NFTA_TUNNEL_KEY_VXLAN_GBP])
271 opts->u.vxlan.gbp = ntohl(nla_get_be32(tb[NFTA_TUNNEL_KEY_VXLAN_GBP]));
273 opts->len = sizeof(struct vxlan_metadata);
274 opts->flags = TUNNEL_VXLAN_OPT;
279 static const struct nla_policy nft_tunnel_opts_erspan_policy[NFTA_TUNNEL_KEY_ERSPAN_MAX + 1] = {
280 [NFTA_TUNNEL_KEY_ERSPAN_VERSION] = { .type = NLA_U32 },
281 [NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX] = { .type = NLA_U32 },
282 [NFTA_TUNNEL_KEY_ERSPAN_V2_DIR] = { .type = NLA_U8 },
283 [NFTA_TUNNEL_KEY_ERSPAN_V2_HWID] = { .type = NLA_U8 },
286 static int nft_tunnel_obj_erspan_init(const struct nlattr *attr,
287 struct nft_tunnel_opts *opts)
289 struct nlattr *tb[NFTA_TUNNEL_KEY_ERSPAN_MAX + 1];
293 err = nla_parse_nested_deprecated(tb, NFTA_TUNNEL_KEY_ERSPAN_MAX,
294 attr, nft_tunnel_opts_erspan_policy,
299 if (!tb[NFTA_TUNNEL_KEY_ERSPAN_VERSION])
302 version = ntohl(nla_get_be32(tb[NFTA_TUNNEL_KEY_ERSPAN_VERSION]));
305 if (!tb[NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX])
308 opts->u.erspan.u.index =
309 nla_get_be32(tb[NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX]);
311 case ERSPAN_VERSION2:
312 if (!tb[NFTA_TUNNEL_KEY_ERSPAN_V2_DIR] ||
313 !tb[NFTA_TUNNEL_KEY_ERSPAN_V2_HWID])
316 hwid = nla_get_u8(tb[NFTA_TUNNEL_KEY_ERSPAN_V2_HWID]);
317 dir = nla_get_u8(tb[NFTA_TUNNEL_KEY_ERSPAN_V2_DIR]);
319 set_hwid(&opts->u.erspan.u.md2, hwid);
320 opts->u.erspan.u.md2.dir = dir;
325 opts->u.erspan.version = version;
327 opts->len = sizeof(struct erspan_metadata);
328 opts->flags = TUNNEL_ERSPAN_OPT;
333 static const struct nla_policy nft_tunnel_opts_geneve_policy[NFTA_TUNNEL_KEY_GENEVE_MAX + 1] = {
334 [NFTA_TUNNEL_KEY_GENEVE_CLASS] = { .type = NLA_U16 },
335 [NFTA_TUNNEL_KEY_GENEVE_TYPE] = { .type = NLA_U8 },
336 [NFTA_TUNNEL_KEY_GENEVE_DATA] = { .type = NLA_BINARY, .len = 128 },
339 static int nft_tunnel_obj_geneve_init(const struct nlattr *attr,
340 struct nft_tunnel_opts *opts)
342 struct geneve_opt *opt = (struct geneve_opt *)opts->u.data + opts->len;
343 struct nlattr *tb[NFTA_TUNNEL_KEY_GENEVE_MAX + 1];
346 err = nla_parse_nested(tb, NFTA_TUNNEL_KEY_GENEVE_MAX, attr,
347 nft_tunnel_opts_geneve_policy, NULL);
351 if (!tb[NFTA_TUNNEL_KEY_GENEVE_CLASS] ||
352 !tb[NFTA_TUNNEL_KEY_GENEVE_TYPE] ||
353 !tb[NFTA_TUNNEL_KEY_GENEVE_DATA])
356 attr = tb[NFTA_TUNNEL_KEY_GENEVE_DATA];
357 data_len = nla_len(attr);
361 opts->len += sizeof(*opt) + data_len;
362 if (opts->len > IP_TUNNEL_OPTS_MAX)
365 memcpy(opt->opt_data, nla_data(attr), data_len);
366 opt->length = data_len / 4;
367 opt->opt_class = nla_get_be16(tb[NFTA_TUNNEL_KEY_GENEVE_CLASS]);
368 opt->type = nla_get_u8(tb[NFTA_TUNNEL_KEY_GENEVE_TYPE]);
369 opts->flags = TUNNEL_GENEVE_OPT;
374 static const struct nla_policy nft_tunnel_opts_policy[NFTA_TUNNEL_KEY_OPTS_MAX + 1] = {
375 [NFTA_TUNNEL_KEY_OPTS_UNSPEC] = {
376 .strict_start_type = NFTA_TUNNEL_KEY_OPTS_GENEVE },
377 [NFTA_TUNNEL_KEY_OPTS_VXLAN] = { .type = NLA_NESTED, },
378 [NFTA_TUNNEL_KEY_OPTS_ERSPAN] = { .type = NLA_NESTED, },
379 [NFTA_TUNNEL_KEY_OPTS_GENEVE] = { .type = NLA_NESTED, },
382 static int nft_tunnel_obj_opts_init(const struct nft_ctx *ctx,
383 const struct nlattr *attr,
384 struct ip_tunnel_info *info,
385 struct nft_tunnel_opts *opts)
387 int err, rem, type = 0;
390 err = nla_validate_nested_deprecated(attr, NFTA_TUNNEL_KEY_OPTS_MAX,
391 nft_tunnel_opts_policy, NULL);
395 nla_for_each_attr(nla, nla_data(attr), nla_len(attr), rem) {
396 switch (nla_type(nla)) {
397 case NFTA_TUNNEL_KEY_OPTS_VXLAN:
400 err = nft_tunnel_obj_vxlan_init(nla, opts);
403 type = TUNNEL_VXLAN_OPT;
405 case NFTA_TUNNEL_KEY_OPTS_ERSPAN:
408 err = nft_tunnel_obj_erspan_init(nla, opts);
411 type = TUNNEL_ERSPAN_OPT;
413 case NFTA_TUNNEL_KEY_OPTS_GENEVE:
414 if (type && type != TUNNEL_GENEVE_OPT)
416 err = nft_tunnel_obj_geneve_init(nla, opts);
419 type = TUNNEL_GENEVE_OPT;
429 static const struct nla_policy nft_tunnel_key_policy[NFTA_TUNNEL_KEY_MAX + 1] = {
430 [NFTA_TUNNEL_KEY_IP] = { .type = NLA_NESTED, },
431 [NFTA_TUNNEL_KEY_IP6] = { .type = NLA_NESTED, },
432 [NFTA_TUNNEL_KEY_ID] = { .type = NLA_U32, },
433 [NFTA_TUNNEL_KEY_FLAGS] = { .type = NLA_U32, },
434 [NFTA_TUNNEL_KEY_TOS] = { .type = NLA_U8, },
435 [NFTA_TUNNEL_KEY_TTL] = { .type = NLA_U8, },
436 [NFTA_TUNNEL_KEY_SPORT] = { .type = NLA_U16, },
437 [NFTA_TUNNEL_KEY_DPORT] = { .type = NLA_U16, },
438 [NFTA_TUNNEL_KEY_OPTS] = { .type = NLA_NESTED, },
441 static int nft_tunnel_obj_init(const struct nft_ctx *ctx,
442 const struct nlattr * const tb[],
443 struct nft_object *obj)
445 struct nft_tunnel_obj *priv = nft_obj_data(obj);
446 struct ip_tunnel_info info;
447 struct metadata_dst *md;
450 if (!tb[NFTA_TUNNEL_KEY_ID])
453 memset(&info, 0, sizeof(info));
454 info.mode = IP_TUNNEL_INFO_TX;
455 info.key.tun_id = key32_to_tunnel_id(nla_get_be32(tb[NFTA_TUNNEL_KEY_ID]));
456 info.key.tun_flags = TUNNEL_KEY | TUNNEL_CSUM | TUNNEL_NOCACHE;
458 if (tb[NFTA_TUNNEL_KEY_IP]) {
459 err = nft_tunnel_obj_ip_init(ctx, tb[NFTA_TUNNEL_KEY_IP], &info);
462 } else if (tb[NFTA_TUNNEL_KEY_IP6]) {
463 err = nft_tunnel_obj_ip6_init(ctx, tb[NFTA_TUNNEL_KEY_IP6], &info);
470 if (tb[NFTA_TUNNEL_KEY_SPORT]) {
471 info.key.tp_src = nla_get_be16(tb[NFTA_TUNNEL_KEY_SPORT]);
473 if (tb[NFTA_TUNNEL_KEY_DPORT]) {
474 info.key.tp_dst = nla_get_be16(tb[NFTA_TUNNEL_KEY_DPORT]);
477 if (tb[NFTA_TUNNEL_KEY_FLAGS]) {
480 tun_flags = ntohl(nla_get_be32(tb[NFTA_TUNNEL_KEY_FLAGS]));
481 if (tun_flags & ~NFT_TUNNEL_F_MASK)
484 if (tun_flags & NFT_TUNNEL_F_ZERO_CSUM_TX)
485 info.key.tun_flags &= ~TUNNEL_CSUM;
486 if (tun_flags & NFT_TUNNEL_F_DONT_FRAGMENT)
487 info.key.tun_flags |= TUNNEL_DONT_FRAGMENT;
488 if (tun_flags & NFT_TUNNEL_F_SEQ_NUMBER)
489 info.key.tun_flags |= TUNNEL_SEQ;
491 if (tb[NFTA_TUNNEL_KEY_TOS])
492 info.key.tos = nla_get_u8(tb[NFTA_TUNNEL_KEY_TOS]);
493 if (tb[NFTA_TUNNEL_KEY_TTL])
494 info.key.ttl = nla_get_u8(tb[NFTA_TUNNEL_KEY_TTL]);
496 info.key.ttl = U8_MAX;
498 if (tb[NFTA_TUNNEL_KEY_OPTS]) {
499 err = nft_tunnel_obj_opts_init(ctx, tb[NFTA_TUNNEL_KEY_OPTS],
505 md = metadata_dst_alloc(priv->opts.len, METADATA_IP_TUNNEL, GFP_KERNEL);
509 memcpy(&md->u.tun_info, &info, sizeof(info));
510 #ifdef CONFIG_DST_CACHE
511 err = dst_cache_init(&md->u.tun_info.dst_cache, GFP_KERNEL);
513 metadata_dst_free(md);
517 ip_tunnel_info_opts_set(&md->u.tun_info, &priv->opts.u, priv->opts.len,
524 static inline void nft_tunnel_obj_eval(struct nft_object *obj,
525 struct nft_regs *regs,
526 const struct nft_pktinfo *pkt)
528 struct nft_tunnel_obj *priv = nft_obj_data(obj);
529 struct sk_buff *skb = pkt->skb;
532 dst_hold((struct dst_entry *) priv->md);
533 skb_dst_set(skb, (struct dst_entry *) priv->md);
536 static int nft_tunnel_ip_dump(struct sk_buff *skb, struct ip_tunnel_info *info)
540 if (info->mode & IP_TUNNEL_INFO_IPV6) {
541 nest = nla_nest_start_noflag(skb, NFTA_TUNNEL_KEY_IP6);
545 if (nla_put_in6_addr(skb, NFTA_TUNNEL_KEY_IP6_SRC,
546 &info->key.u.ipv6.src) < 0 ||
547 nla_put_in6_addr(skb, NFTA_TUNNEL_KEY_IP6_DST,
548 &info->key.u.ipv6.dst) < 0 ||
549 nla_put_be32(skb, NFTA_TUNNEL_KEY_IP6_FLOWLABEL,
551 nla_nest_cancel(skb, nest);
555 nla_nest_end(skb, nest);
557 nest = nla_nest_start_noflag(skb, NFTA_TUNNEL_KEY_IP);
561 if (nla_put_in_addr(skb, NFTA_TUNNEL_KEY_IP_SRC,
562 info->key.u.ipv4.src) < 0 ||
563 nla_put_in_addr(skb, NFTA_TUNNEL_KEY_IP_DST,
564 info->key.u.ipv4.dst) < 0) {
565 nla_nest_cancel(skb, nest);
569 nla_nest_end(skb, nest);
575 static int nft_tunnel_opts_dump(struct sk_buff *skb,
576 struct nft_tunnel_obj *priv)
578 struct nft_tunnel_opts *opts = &priv->opts;
579 struct nlattr *nest, *inner;
581 nest = nla_nest_start_noflag(skb, NFTA_TUNNEL_KEY_OPTS);
585 if (opts->flags & TUNNEL_VXLAN_OPT) {
586 inner = nla_nest_start_noflag(skb, NFTA_TUNNEL_KEY_OPTS_VXLAN);
589 if (nla_put_be32(skb, NFTA_TUNNEL_KEY_VXLAN_GBP,
590 htonl(opts->u.vxlan.gbp)))
592 nla_nest_end(skb, inner);
593 } else if (opts->flags & TUNNEL_ERSPAN_OPT) {
594 inner = nla_nest_start_noflag(skb, NFTA_TUNNEL_KEY_OPTS_ERSPAN);
597 if (nla_put_be32(skb, NFTA_TUNNEL_KEY_ERSPAN_VERSION,
598 htonl(opts->u.erspan.version)))
600 switch (opts->u.erspan.version) {
602 if (nla_put_be32(skb, NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX,
603 opts->u.erspan.u.index))
606 case ERSPAN_VERSION2:
607 if (nla_put_u8(skb, NFTA_TUNNEL_KEY_ERSPAN_V2_HWID,
608 get_hwid(&opts->u.erspan.u.md2)) ||
609 nla_put_u8(skb, NFTA_TUNNEL_KEY_ERSPAN_V2_DIR,
610 opts->u.erspan.u.md2.dir))
614 nla_nest_end(skb, inner);
615 } else if (opts->flags & TUNNEL_GENEVE_OPT) {
616 struct geneve_opt *opt;
619 inner = nla_nest_start_noflag(skb, NFTA_TUNNEL_KEY_OPTS_GENEVE);
622 while (opts->len > offset) {
623 opt = (struct geneve_opt *)opts->u.data + offset;
624 if (nla_put_be16(skb, NFTA_TUNNEL_KEY_GENEVE_CLASS,
626 nla_put_u8(skb, NFTA_TUNNEL_KEY_GENEVE_TYPE,
628 nla_put(skb, NFTA_TUNNEL_KEY_GENEVE_DATA,
629 opt->length * 4, opt->opt_data))
631 offset += sizeof(*opt) + opt->length * 4;
633 nla_nest_end(skb, inner);
635 nla_nest_end(skb, nest);
639 nla_nest_cancel(skb, inner);
641 nla_nest_cancel(skb, nest);
645 static int nft_tunnel_ports_dump(struct sk_buff *skb,
646 struct ip_tunnel_info *info)
648 if (nla_put_be16(skb, NFTA_TUNNEL_KEY_SPORT, info->key.tp_src) < 0 ||
649 nla_put_be16(skb, NFTA_TUNNEL_KEY_DPORT, info->key.tp_dst) < 0)
655 static int nft_tunnel_flags_dump(struct sk_buff *skb,
656 struct ip_tunnel_info *info)
660 if (info->key.tun_flags & TUNNEL_DONT_FRAGMENT)
661 flags |= NFT_TUNNEL_F_DONT_FRAGMENT;
662 if (!(info->key.tun_flags & TUNNEL_CSUM))
663 flags |= NFT_TUNNEL_F_ZERO_CSUM_TX;
664 if (info->key.tun_flags & TUNNEL_SEQ)
665 flags |= NFT_TUNNEL_F_SEQ_NUMBER;
667 if (nla_put_be32(skb, NFTA_TUNNEL_KEY_FLAGS, htonl(flags)) < 0)
673 static int nft_tunnel_obj_dump(struct sk_buff *skb,
674 struct nft_object *obj, bool reset)
676 struct nft_tunnel_obj *priv = nft_obj_data(obj);
677 struct ip_tunnel_info *info = &priv->md->u.tun_info;
679 if (nla_put_be32(skb, NFTA_TUNNEL_KEY_ID,
680 tunnel_id_to_key32(info->key.tun_id)) ||
681 nft_tunnel_ip_dump(skb, info) < 0 ||
682 nft_tunnel_ports_dump(skb, info) < 0 ||
683 nft_tunnel_flags_dump(skb, info) < 0 ||
684 nla_put_u8(skb, NFTA_TUNNEL_KEY_TOS, info->key.tos) ||
685 nla_put_u8(skb, NFTA_TUNNEL_KEY_TTL, info->key.ttl) ||
686 nft_tunnel_opts_dump(skb, priv) < 0)
687 goto nla_put_failure;
695 static void nft_tunnel_obj_destroy(const struct nft_ctx *ctx,
696 struct nft_object *obj)
698 struct nft_tunnel_obj *priv = nft_obj_data(obj);
700 metadata_dst_free(priv->md);
703 static struct nft_object_type nft_tunnel_obj_type;
704 static const struct nft_object_ops nft_tunnel_obj_ops = {
705 .type = &nft_tunnel_obj_type,
706 .size = sizeof(struct nft_tunnel_obj),
707 .eval = nft_tunnel_obj_eval,
708 .init = nft_tunnel_obj_init,
709 .destroy = nft_tunnel_obj_destroy,
710 .dump = nft_tunnel_obj_dump,
713 static struct nft_object_type nft_tunnel_obj_type __read_mostly = {
714 .type = NFT_OBJECT_TUNNEL,
715 .ops = &nft_tunnel_obj_ops,
716 .maxattr = NFTA_TUNNEL_KEY_MAX,
717 .policy = nft_tunnel_key_policy,
718 .owner = THIS_MODULE,
721 static int __init nft_tunnel_module_init(void)
725 err = nft_register_expr(&nft_tunnel_type);
729 err = nft_register_obj(&nft_tunnel_obj_type);
731 nft_unregister_expr(&nft_tunnel_type);
736 static void __exit nft_tunnel_module_exit(void)
738 nft_unregister_obj(&nft_tunnel_obj_type);
739 nft_unregister_expr(&nft_tunnel_type);
742 module_init(nft_tunnel_module_init);
743 module_exit(nft_tunnel_module_exit);
745 MODULE_LICENSE("GPL");
746 MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
747 MODULE_ALIAS_NFT_EXPR("tunnel");
748 MODULE_ALIAS_NFT_OBJ(NFT_OBJECT_TUNNEL);
749 MODULE_DESCRIPTION("nftables tunnel expression support");