nataraid(4): Add devstat support.
[dragonfly.git] / sys / net / route.h
CommitLineData
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1/*
2 * Copyright (c) 2004, 2005 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Jeffrey M. Hsu.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of The DragonFly Project nor the names of its
16 * contributors may be used to endorse or promote products derived
17 * from this software without specific, prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
29 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
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33/*
34 * Copyright (c) 1980, 1986, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by the University of
48 * California, Berkeley and its contributors.
49 * 4. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 *
65 * @(#)route.h 8.4 (Berkeley) 1/9/95
66 * $FreeBSD: src/sys/net/route.h,v 1.36.2.5 2002/02/01 11:48:01 ru Exp $
3eef1c4e 67 * $DragonFly: src/sys/net/route.h,v 1.24 2008/09/11 11:23:29 sephe Exp $
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68 */
69
70#ifndef _NET_ROUTE_H_
71#define _NET_ROUTE_H_
72
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73#ifndef _SYS_TYPES_H_
74#include <sys/types.h>
75#endif
76#ifndef _SYS_PARAM_H_
77#include <sys/param.h>
78#endif
79#ifndef _SYS_SOCKET_H_
80#include <sys/socket.h>
81#endif
82
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83/*
84 * Kernel resident routing tables.
85 *
86 * The routing tables are initialized when interface addresses
87 * are set by making entries for all directly connected interfaces.
88 */
89
90/*
91 * A route consists of a destination address and a reference
92 * to a routing entry. These are often held by protocols
93 * in their control blocks, e.g. inpcb.
94 */
95struct route {
96 struct rtentry *ro_rt;
97 struct sockaddr ro_dst;
98};
99
100/*
101 * These numbers are used by reliable protocols for determining
102 * retransmission behavior and are included in the routing structure.
103 */
2e9572df 104struct rt_metrics { /* grouped for locality of reference */
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105 u_long rmx_locks; /* Kernel must leave these values alone */
106 u_long rmx_mtu; /* MTU for this path */
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107 u_long rmx_pksent; /* packets sent using this route */
108 u_long rmx_expire; /* lifetime for route */
109
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110 u_long rmx_sendpipe; /* outbound delay-bandwidth product */
111 u_long rmx_ssthresh; /* outbound gateway buffer limit */
112 u_long rmx_rtt; /* estimated round trip time */
113 u_long rmx_rttvar; /* estimated rtt variance */
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114
115 u_long rmx_recvpipe; /* inbound delay-bandwidth product */
116 u_long rmx_hopcount; /* max hops expected */
27b8aee3 117 u_short rmx_mssopt; /* peer's cached MSS */
8ec89e60 118 u_short rmx_pad; /* explicit pad */
9855a4ef 119 u_long rmx_msl; /* maximum segment lifetime, unit: ms */
8ec89e60 120 u_long rmx_filler[2]; /* for future expansion */
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121};
122
123/*
124 * rmx_rtt and rmx_rttvar are stored as microseconds;
125 * RTTTOPRHZ(rtt) converts to a value suitable for use
126 * by a protocol slowtimo counter.
127 */
128#define RTM_RTTUNIT 1000000 /* units for rtt, rttvar, as units per sec */
129#define RTTTOPRHZ(r) ((r) / (RTM_RTTUNIT / PR_SLOWHZ))
130
131/*
132 * XXX kernel function pointer `rt_output' is visible to applications.
133 */
134struct mbuf;
135
136/*
137 * We distinguish between routes to hosts and routes to networks,
138 * preferring the former if available. For each route we infer
139 * the interface to use from the gateway address supplied when
140 * the route was entered. Routes that forward packets through
141 * gateways are marked so that the output routines know to address the
142 * gateway rather than the ultimate destination.
143 */
144#ifndef RNF_NORMAL
145#include <net/radix.h>
146#endif
f23061d4 147
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148struct rtentry {
149 struct radix_node rt_nodes[2]; /* tree glue, and other values */
150#define rt_key(r) ((struct sockaddr *)((r)->rt_nodes->rn_key))
151#define rt_mask(r) ((struct sockaddr *)((r)->rt_nodes->rn_mask))
152 struct sockaddr *rt_gateway; /* value */
153 long rt_refcnt; /* # held references */
154 u_long rt_flags; /* up/down?, host/net */
155 struct ifnet *rt_ifp; /* the answer: interface to use */
156 struct ifaddr *rt_ifa; /* the answer: interface to use */
157 struct sockaddr *rt_genmask; /* for generation of cloned routes */
f23061d4 158 void *rt_llinfo; /* pointer to link level info cache */
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159 struct rt_metrics rt_rmx; /* metrics used by rx'ing protocols */
160 struct rtentry *rt_gwroute; /* implied entry for gatewayed routes */
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161 int (*rt_output) (struct ifnet *, struct mbuf *, struct sockaddr *,
162 struct rtentry *);
984263bc 163 /* output routine for this (rt,if) */
f23061d4 164 struct rtentry *rt_parent; /* cloning parent of this route */
da14dbcf 165 int rt_cpuid; /* owner cpu */
9b42cabe 166 struct sockaddr *rt_shim[3]; /* mpls label / operation array */
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167};
168
169/*
170 * Following structure necessary for 4.3 compatibility;
171 * We should eventually move it to a compat file.
172 */
173struct ortentry {
174 u_long rt_hash; /* to speed lookups */
175 struct sockaddr rt_dst; /* key */
176 struct sockaddr rt_gateway; /* value */
177 short rt_flags; /* up/down?, host/net */
178 short rt_refcnt; /* # held references */
179 u_long rt_use; /* raw # packets forwarded */
180 struct ifnet *rt_ifp; /* the answer: interface to use */
181};
182
183#define rt_use rt_rmx.rmx_pksent
184
185#define RTF_UP 0x1 /* route usable */
186#define RTF_GATEWAY 0x2 /* destination is a gateway */
187#define RTF_HOST 0x4 /* host entry (net otherwise) */
188#define RTF_REJECT 0x8 /* host or net unreachable */
189#define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */
190#define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */
191#define RTF_DONE 0x40 /* message confirmed */
192/* 0x80 unused, was RTF_DELCLONE */
193#define RTF_CLONING 0x100 /* generate new routes on use */
194#define RTF_XRESOLVE 0x200 /* external daemon resolves name */
195#define RTF_LLINFO 0x400 /* generated by link layer (e.g. ARP) */
196#define RTF_STATIC 0x800 /* manually added */
197#define RTF_BLACKHOLE 0x1000 /* just discard pkts (during updates) */
198#define RTF_PROTO2 0x4000 /* protocol specific routing flag */
199#define RTF_PROTO1 0x8000 /* protocol specific routing flag */
200
201#define RTF_PRCLONING 0x10000 /* protocol requires cloning */
202#define RTF_WASCLONED 0x20000 /* route generated through cloning */
203#define RTF_PROTO3 0x40000 /* protocol specific routing flag */
204/* 0x80000 unused */
205#define RTF_PINNED 0x100000 /* future use */
f23061d4 206#define RTF_LOCAL 0x200000 /* route represents a local address */
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207#define RTF_BROADCAST 0x400000 /* route represents a bcast address */
208#define RTF_MULTICAST 0x800000 /* route represents a mcast address */
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209#define RTF_MPLSOPS 0x1000000 /* route uses mpls label operations */
210 /* 0x2000000 and up unassigned */
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211
212/*
213 * Routing statistics.
214 */
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215struct rtstatistics {
216 u_long rts_badredirect; /* bogus redirect calls */
217 u_long rts_dynamic; /* routes created by redirects */
218 u_long rts_newgateway; /* routes modified by redirects */
219 u_long rts_unreach; /* lookups which failed */
220 u_long rts_wildcard; /* lookups satisfied by a wildcard */
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221};
222/*
223 * Structures for routing messages.
224 */
225struct rt_msghdr {
226 u_short rtm_msglen; /* to skip over non-understood messages */
227 u_char rtm_version; /* future binary compatibility */
228 u_char rtm_type; /* message type */
229 u_short rtm_index; /* index for associated ifp */
230 int rtm_flags; /* flags, incl. kern & message, e.g. DONE */
231 int rtm_addrs; /* bitmask identifying sockaddrs in msg */
232 pid_t rtm_pid; /* identify sender */
233 int rtm_seq; /* for sender to identify action */
234 int rtm_errno; /* why failed */
235 int rtm_use; /* from rtentry */
236 u_long rtm_inits; /* which metrics we are initializing */
237 struct rt_metrics rtm_rmx; /* metrics themselves */
238};
239
9b42cabe 240#define RTM_VERSION 6 /* Up the ante and ignore older versions */
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241
242/*
243 * Message types.
244 */
245#define RTM_ADD 0x1 /* Add Route */
246#define RTM_DELETE 0x2 /* Delete Route */
247#define RTM_CHANGE 0x3 /* Change Metrics or flags */
248#define RTM_GET 0x4 /* Report Metrics */
249#define RTM_LOSING 0x5 /* Kernel Suspects Partitioning */
250#define RTM_REDIRECT 0x6 /* Told to use different route */
251#define RTM_MISS 0x7 /* Lookup failed on this address */
252#define RTM_LOCK 0x8 /* fix specified metrics */
253#define RTM_OLDADD 0x9 /* caused by SIOCADDRT */
254#define RTM_OLDDEL 0xa /* caused by SIOCDELRT */
255#define RTM_RESOLVE 0xb /* req to resolve dst to LL addr */
256#define RTM_NEWADDR 0xc /* address being added to iface */
257#define RTM_DELADDR 0xd /* address being removed from iface */
258#define RTM_IFINFO 0xe /* iface going up/down etc. */
259#define RTM_NEWMADDR 0xf /* mcast group membership being added to if */
260#define RTM_DELMADDR 0x10 /* mcast group membership being deleted */
261#define RTM_IFANNOUNCE 0x11 /* iface arrival/departure */
841ab66c 262#define RTM_IEEE80211 0x12 /* IEEE80211 wireless event */
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263
264/*
265 * Bitmask values for rtm_inits and rmx_locks.
266 */
267#define RTV_MTU 0x1 /* init or lock _mtu */
268#define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */
269#define RTV_EXPIRE 0x4 /* init or lock _expire */
270#define RTV_RPIPE 0x8 /* init or lock _recvpipe */
271#define RTV_SPIPE 0x10 /* init or lock _sendpipe */
272#define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */
273#define RTV_RTT 0x40 /* init or lock _rtt */
274#define RTV_RTTVAR 0x80 /* init or lock _rttvar */
8ec89e60 275#define RTV_MSL 0x100 /* init or lock _msl */
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276
277/*
278 * Bitmask values for rtm_addrs.
279 */
280#define RTA_DST 0x1 /* destination sockaddr present */
281#define RTA_GATEWAY 0x2 /* gateway sockaddr present */
282#define RTA_NETMASK 0x4 /* netmask sockaddr present */
283#define RTA_GENMASK 0x8 /* cloning mask sockaddr present */
284#define RTA_IFP 0x10 /* interface name sockaddr present */
285#define RTA_IFA 0x20 /* interface addr sockaddr present */
286#define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */
287#define RTA_BRD 0x80 /* for NEWADDR, broadcast or p-p dest addr */
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288#define RTA_MPLS1 0x100 /* mpls label and/or operation present */
289#define RTA_MPLS2 0x200 /* mpls label and/or operation present */
290#define RTA_MPLS3 0x400 /* mpls label and/or operation present */
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291
292/*
293 * Index offsets for sockaddr array for alternate internal encoding.
294 */
295#define RTAX_DST 0 /* destination sockaddr present */
296#define RTAX_GATEWAY 1 /* gateway sockaddr present */
297#define RTAX_NETMASK 2 /* netmask sockaddr present */
298#define RTAX_GENMASK 3 /* cloning mask sockaddr present */
299#define RTAX_IFP 4 /* interface name sockaddr present */
300#define RTAX_IFA 5 /* interface addr sockaddr present */
301#define RTAX_AUTHOR 6 /* sockaddr for author of redirect */
302#define RTAX_BRD 7 /* for NEWADDR, broadcast or p-p dest addr */
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303#define RTAX_MPLS1 8 /* mpls label and/or operation present */
304#define RTAX_MPLS2 9 /* mpls label and/or operation present */
305#define RTAX_MPLS3 10 /* mpls label and/or operation present */
306#define RTAX_MAX 11 /* size of array to allocate */
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307
308struct rt_addrinfo {
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309 int rti_addrs;
310 struct sockaddr *rti_info[RTAX_MAX];
311 int rti_flags;
312 struct ifaddr *rti_ifa;
313 struct ifnet *rti_ifp;
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314};
315
9bed6909 316#ifdef _KERNEL
0c3c561c 317
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318#define rti_dst rti_info[RTAX_DST]
319#define rti_gateway rti_info[RTAX_GATEWAY]
320#define rti_netmask rti_info[RTAX_NETMASK]
321#define rti_genmask rti_info[RTAX_GENMASK]
322#define rti_ifpaddr rti_info[RTAX_IFP]
323#define rti_ifaaddr rti_info[RTAX_IFA]
324#define rti_author rti_info[RTAX_AUTHOR]
325#define rti_bcastaddr rti_info[RTAX_BRD]
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326#define rti_mpls1 rti_info[RTAX_MPLS1]
327#define rti_mpls2 rti_info[RTAX_MPLS2]
328#define rti_mpls3 rti_info[RTAX_MPLS3]
ef87f48d 329
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330extern struct radix_node_head *rt_tables[MAXCPU][AF_MAX+1];
331extern struct lwkt_port *rt_ports[MAXCPU];
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332
333struct ifmultiaddr;
334struct proc;
87de5057 335struct ucred;
984263bc 336
158abb01 337void route_init (void);
f3ed2586 338void rt_dstmsg(int type, struct sockaddr *dst, int error);
158abb01 339int rt_getifa (struct rt_addrinfo *);
841ab66c 340void rt_ieee80211msg(struct ifnet *, int, void *, size_t);
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341void rt_ifannouncemsg (struct ifnet *, int);
342void rt_ifmsg (struct ifnet *);
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343int rt_llroute (struct sockaddr *dst, struct rtentry *rt0,
344 struct rtentry **drt);
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345void rt_missmsg (int, struct rt_addrinfo *, int, int);
346void rt_newaddrmsg (int, struct ifaddr *, int, struct rtentry *);
347void rt_newmaddrmsg (int, struct ifmultiaddr *);
f3ed2586 348void rt_rtmsg(int cmd, struct rtentry *rt, struct ifnet *ifp, int error);
158abb01 349int rt_setgate (struct rtentry *,
afe44b68 350 struct sockaddr *, struct sockaddr *, boolean_t);
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351void rtalloc (struct route *);
352void rtalloc_ign (struct route *, u_long);
f3ed2586 353
984263bc 354struct rtentry *
03d6a592 355 _rtlookup (struct sockaddr *, __boolean_t, u_long);
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356#define RTL_REPORTMSG TRUE
357#define RTL_DONTREPORT FALSE
358
359/* flags to ignore */
360#define RTL_DOCLONE 0UL
361#define RTL_DONTCLONE (RTF_CLONING | RTF_PRCLONING)
362
363/*
364 * Look up a route with no cloning side-effects or miss reports generated.
365 */
366static __inline struct rtentry *
367rtpurelookup(struct sockaddr *dst)
368{
369 return _rtlookup(dst, RTL_DONTREPORT, RTL_DONTCLONE);
370}
371
372/*
373 * Do full route lookup with cloning and reporting on misses.
374 */
375static __inline struct rtentry *
376rtlookup(struct sockaddr *dst)
377{
378 return _rtlookup(dst, RTL_REPORTMSG, RTL_DOCLONE);
379}
380
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381typedef void (*rtrequest1_callback_func_t)(int, int, struct rt_addrinfo *,
382 struct rtentry *, void *);
2c62ae3b 383typedef int (*rtsearch_callback_func_t)(int, struct rt_addrinfo *,
b5e01dd3 384 struct rtentry *, void *, int);
ecdefdda 385
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386void rtfree (struct rtentry *);
387int rtinit (struct ifaddr *, int, int);
87de5057 388int rtioctl (u_long, caddr_t, struct ucred *);
158abb01 389void rtredirect (struct sockaddr *, struct sockaddr *,
f6870fe3 390 struct sockaddr *, int, struct sockaddr *);
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391int rtrequest (int, struct sockaddr *,
392 struct sockaddr *, struct sockaddr *, int, struct rtentry **);
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393int rtrequest_global (int, struct sockaddr *,
394 struct sockaddr *, struct sockaddr *, int);
158abb01 395int rtrequest1 (int, struct rt_addrinfo *, struct rtentry **);
ecdefdda 396int rtrequest1_global (int, struct rt_addrinfo *, rtrequest1_callback_func_t, void *);
f23061d4 397
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398#define RTS_EXACTMATCH TRUE
399#define RTS_NOEXACTMATCH FALSE
400
401int rtsearch_global(int, struct rt_addrinfo *,
402 rtsearch_callback_func_t, void *, boolean_t);
403
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404int rtmask_add_global(struct sockaddr *);
405
406struct sockaddr *_rtmask_lookup(struct sockaddr *, boolean_t);
407
408static __inline struct sockaddr *
409rtmask_lookup(struct sockaddr *_mask)
410{
411 return _rtmask_lookup(_mask, FALSE);
412}
413
414static __inline struct sockaddr *
415rtmask_purelookup(struct sockaddr *_mask)
416{
417 return _rtmask_lookup(_mask, TRUE);
418}
419
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420void rtfree_oncpu(struct rtentry *);
421void rtfree_remote(struct rtentry *, int);
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422void rt_print(struct rt_addrinfo *, struct rtentry *);
423void rt_addrinfo_print(int cmd, struct rt_addrinfo *);
424void sockaddr_print(struct sockaddr *);
425
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426#ifndef _SYS_GLOBALDATA_H_
427#include <sys/globaldata.h>
428#endif
429
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430static __inline void
431RTFREE(struct rtentry *rt)
432{
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433 if (rt->rt_cpuid == mycpuid) {
434 if (rt->rt_refcnt <= 1)
435 rtfree_oncpu(rt);
436 else
437 --rt->rt_refcnt;
438 } else {
439 rtfree_remote(rt, 1);
440 }
f23061d4 441}
977b2184 442
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443static __inline
444struct lwkt_port *
445rtable_portfn(int cpu)
446{
447 return (rt_ports[cpu]);
448}
449
977b2184 450int in_inithead(void **, int);
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451#endif
452
453#endif