ipv6.h (0eea505058740aa45486145296ef4fefbd8cab85) ipv6.h (45f6fad84cc305103b28d73482b344d7f5b76f39)
1/*
2 * Linux INET6 implementation
3 *
4 * Authors:
5 * Pedro Roque <roque@di.fc.ul.pt>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License

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200extern rwlock_t ip6_ra_lock;
201
202/*
203 This structure is prepared by protocol, when parsing
204 ancillary data and passed to IPv6.
205 */
206
207struct ipv6_txoptions {
1/*
2 * Linux INET6 implementation
3 *
4 * Authors:
5 * Pedro Roque <roque@di.fc.ul.pt>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License

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200extern rwlock_t ip6_ra_lock;
201
202/*
203 This structure is prepared by protocol, when parsing
204 ancillary data and passed to IPv6.
205 */
206
207struct ipv6_txoptions {
208 atomic_t refcnt;
208 /* Length of this structure */
209 int tot_len;
210
211 /* length of extension headers */
212
213 __u16 opt_flen; /* after fragment hdr */
214 __u16 opt_nflen; /* before fragment hdr */
215
216 struct ipv6_opt_hdr *hopopt;
217 struct ipv6_opt_hdr *dst0opt;
218 struct ipv6_rt_hdr *srcrt; /* Routing Header */
219 struct ipv6_opt_hdr *dst1opt;
209 /* Length of this structure */
210 int tot_len;
211
212 /* length of extension headers */
213
214 __u16 opt_flen; /* after fragment hdr */
215 __u16 opt_nflen; /* before fragment hdr */
216
217 struct ipv6_opt_hdr *hopopt;
218 struct ipv6_opt_hdr *dst0opt;
219 struct ipv6_rt_hdr *srcrt; /* Routing Header */
220 struct ipv6_opt_hdr *dst1opt;
220
221 struct rcu_head rcu;
221 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
222};
223
224struct ip6_flowlabel {
225 struct ip6_flowlabel __rcu *next;
226 __be32 label;
227 atomic_t users;
228 struct in6_addr dst;

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247#define IPV6_TCLASS_SHIFT 20
248
249struct ipv6_fl_socklist {
250 struct ipv6_fl_socklist __rcu *next;
251 struct ip6_flowlabel *fl;
252 struct rcu_head rcu;
253};
254
222 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
223};
224
225struct ip6_flowlabel {
226 struct ip6_flowlabel __rcu *next;
227 __be32 label;
228 atomic_t users;
229 struct in6_addr dst;

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248#define IPV6_TCLASS_SHIFT 20
249
250struct ipv6_fl_socklist {
251 struct ipv6_fl_socklist __rcu *next;
252 struct ip6_flowlabel *fl;
253 struct rcu_head rcu;
254};
255
256static inline struct ipv6_txoptions *txopt_get(const struct ipv6_pinfo *np)
257{
258 struct ipv6_txoptions *opt;
259
260 rcu_read_lock();
261 opt = rcu_dereference(np->opt);
262 if (opt && !atomic_inc_not_zero(&opt->refcnt))
263 opt = NULL;
264 rcu_read_unlock();
265 return opt;
266}
267
268static inline void txopt_put(struct ipv6_txoptions *opt)
269{
270 if (opt && atomic_dec_and_test(&opt->refcnt))
271 kfree_rcu(opt, rcu);
272}
273
255struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
256struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions *opt_space,
257 struct ip6_flowlabel *fl,
258 struct ipv6_txoptions *fopt);
259void fl6_free_socklist(struct sock *sk);
260int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
261int ipv6_flowlabel_opt_get(struct sock *sk, struct in6_flowlabel_req *freq,
262 int flags);

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485 __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHRT_MAX,
486};
487
488struct ip6_create_arg {
489 __be32 id;
490 u32 user;
491 const struct in6_addr *src;
492 const struct in6_addr *dst;
274struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
275struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions *opt_space,
276 struct ip6_flowlabel *fl,
277 struct ipv6_txoptions *fopt);
278void fl6_free_socklist(struct sock *sk);
279int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
280int ipv6_flowlabel_opt_get(struct sock *sk, struct in6_flowlabel_req *freq,
281 int flags);

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504 __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHRT_MAX,
505};
506
507struct ip6_create_arg {
508 __be32 id;
509 u32 user;
510 const struct in6_addr *src;
511 const struct in6_addr *dst;
512 int iif;
493 u8 ecn;
494};
495
496void ip6_frag_init(struct inet_frag_queue *q, const void *a);
497bool ip6_frag_match(const struct inet_frag_queue *q, const void *a);
498
499/*
500 * Equivalent of ipv4 struct ip

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514};
515
516void ip6_frag_init(struct inet_frag_queue *q, const void *a);
517bool ip6_frag_match(const struct inet_frag_queue *q, const void *a);
518
519/*
520 * Equivalent of ipv4 struct ip

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