2 * Copyright (c) 2015-2016
3 * Alexander V. Chernikov <melifaro@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #ifndef _NET_ROUTE_VAR_H_
33 #define _NET_ROUTE_VAR_H_
36 struct radix_head head;
37 rn_matchaddr_f_t *rnh_matchaddr; /* longest match for sockaddr */
38 rn_addaddr_f_t *rnh_addaddr; /* add based on sockaddr*/
39 rn_deladdr_f_t *rnh_deladdr; /* remove based on sockaddr */
40 rn_lookup_f_t *rnh_lookup; /* exact match for sockaddr */
41 rn_walktree_t *rnh_walktree; /* traverse tree */
42 rn_walktree_from_t *rnh_walktree_from; /* traverse tree below a */
43 rn_close_t *rnh_close; /*do something when the last ref drops*/
44 rt_gen_t rnh_gen; /* generation counter */
45 int rnh_multipath; /* multipath capable ? */
46 struct radix_node rnh_nodes[3]; /* empty tree for common case */
47 struct rmlock rib_lock; /* config/data path lock */
48 struct radix_mask_head rmhead; /* masks radix head */
49 struct vnet *rib_vnet; /* vnet pointer */
50 int rib_family; /* AF of the rtable */
51 u_int rib_fibnum; /* fib number */
52 struct callout expire_callout; /* Callout for expiring dynamic routes */
53 time_t next_expire; /* Next expire run ts */
56 #define RIB_RLOCK_TRACKER struct rm_priotracker _rib_tracker
57 #define RIB_LOCK_INIT(rh) rm_init(&(rh)->rib_lock, "rib head lock")
58 #define RIB_LOCK_DESTROY(rh) rm_destroy(&(rh)->rib_lock)
59 #define RIB_RLOCK(rh) rm_rlock(&(rh)->rib_lock, &_rib_tracker)
60 #define RIB_RUNLOCK(rh) rm_runlock(&(rh)->rib_lock, &_rib_tracker)
61 #define RIB_WLOCK(rh) rm_wlock(&(rh)->rib_lock)
62 #define RIB_WUNLOCK(rh) rm_wunlock(&(rh)->rib_lock)
63 #define RIB_LOCK_ASSERT(rh) rm_assert(&(rh)->rib_lock, RA_LOCKED)
64 #define RIB_WLOCK_ASSERT(rh) rm_assert(&(rh)->rib_lock, RA_WLOCKED)
66 /* Macro for verifying fields in af-specific 'struct route' structures */
67 #define CHK_STRUCT_FIELD_GENERIC(_s1, _f1, _s2, _f2) \
68 _Static_assert(sizeof(((_s1 *)0)->_f1) == sizeof(((_s2 *)0)->_f2), \
69 "Fields " #_f1 " and " #_f2 " size differs"); \
70 _Static_assert(__offsetof(_s1, _f1) == __offsetof(_s2, _f2), \
71 "Fields " #_f1 " and " #_f2 " offset differs");
73 #define _CHK_ROUTE_FIELD(_route_new, _field) \
74 CHK_STRUCT_FIELD_GENERIC(struct route, _field, _route_new, _field)
76 #define CHK_STRUCT_ROUTE_FIELDS(_route_new) \
77 _CHK_ROUTE_FIELD(_route_new, ro_rt) \
78 _CHK_ROUTE_FIELD(_route_new, ro_lle) \
79 _CHK_ROUTE_FIELD(_route_new, ro_prepend)\
80 _CHK_ROUTE_FIELD(_route_new, ro_plen) \
81 _CHK_ROUTE_FIELD(_route_new, ro_flags) \
82 _CHK_ROUTE_FIELD(_route_new, ro_mtu) \
83 _CHK_ROUTE_FIELD(_route_new, spare)
85 #define CHK_STRUCT_ROUTE_COMPAT(_ro_new, _dst_new) \
86 CHK_STRUCT_ROUTE_FIELDS(_ro_new); \
87 _Static_assert(__offsetof(struct route, ro_dst) == __offsetof(_ro_new, _dst_new),\
88 "ro_dst and " #_dst_new " are at different offset")
90 struct rib_head *rt_tables_get_rnh(int fib, int family);
92 /* rte<>nhop translation */
93 static inline uint16_t
94 fib_rte_to_nh_flags(int rt_flags)
98 res = (rt_flags & RTF_REJECT) ? NHF_REJECT : 0;
99 res |= (rt_flags & RTF_HOST) ? NHF_HOST : 0;
100 res |= (rt_flags & RTF_BLACKHOLE) ? NHF_BLACKHOLE : 0;
101 res |= (rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) ? NHF_REDIRECT : 0;
102 res |= (rt_flags & RTF_BROADCAST) ? NHF_BROADCAST : 0;
103 res |= (rt_flags & RTF_GATEWAY) ? NHF_GATEWAY : 0;
108 void tmproutes_update(struct rib_head *rnh, struct rtentry *rt);
109 void tmproutes_init(struct rib_head *rh);
110 void tmproutes_destroy(struct rib_head *rh);