Annotation of embedaddon/bird2/proto/radv/radv.h, revision 1.1
1.1 ! misho 1: /*
! 2: * BIRD -- Router Advertisement
! 3: *
! 4: * (c) 2011--2019 Ondrej Zajicek <santiago@crfreenet.org>
! 5: * (c) 2011--2019 CZ.NIC z.s.p.o.
! 6: *
! 7: * Can be freely distributed and used under the terms of the GNU GPL.
! 8: */
! 9:
! 10: #ifndef _BIRD_RADV_H_
! 11: #define _BIRD_RADV_H_
! 12:
! 13: #include "nest/bird.h"
! 14:
! 15: #include "lib/ip.h"
! 16: #include "lib/lists.h"
! 17: #include "lib/socket.h"
! 18: #include "lib/timer.h"
! 19: #include "lib/resource.h"
! 20: #include "nest/protocol.h"
! 21: #include "nest/iface.h"
! 22: #include "nest/route.h"
! 23: #include "nest/cli.h"
! 24: #include "nest/locks.h"
! 25: #include "conf/conf.h"
! 26: #include "lib/string.h"
! 27:
! 28:
! 29: #define ICMPV6_PROTO 58
! 30:
! 31: #define ICMPV6_RS 133
! 32: #define ICMPV6_RA 134
! 33:
! 34: #define MAX_INITIAL_RTR_ADVERTISEMENTS 3
! 35: #define MAX_INITIAL_RTR_ADVERT_INTERVAL (16 S_)
! 36:
! 37: #define DEFAULT_MAX_RA_INT 600
! 38: #define DEFAULT_MIN_DELAY 3
! 39: #define DEFAULT_CURRENT_HOP_LIMIT 64
! 40:
! 41: #define DEFAULT_VALID_LIFETIME 86400
! 42: #define DEFAULT_PREFERRED_LIFETIME 14400
! 43:
! 44: #define DEFAULT_DNS_LIFETIME_MULT 3
! 45:
! 46:
! 47: struct radv_config
! 48: {
! 49: struct proto_config c;
! 50: list patt_list; /* List of iface configs (struct radv_iface_config) */
! 51: list pref_list; /* Global list of prefix configs (struct radv_prefix_config) */
! 52: list rdnss_list; /* Global list of RDNSS configs (struct radv_rdnss_config) */
! 53: list dnssl_list; /* Global list of DNSSL configs (struct radv_dnssl_config) */
! 54:
! 55: net_addr trigger; /* Prefix of a trigger route, if defined */
! 56: u8 propagate_routes; /* Do we propagate more specific routes (RFC 4191)? */
! 57: u32 max_linger_time; /* Maximum of interface route_linger_time */
! 58: };
! 59:
! 60: struct radv_iface_config
! 61: {
! 62: struct iface_patt i;
! 63: list pref_list; /* Local list of prefix configs (struct radv_prefix_config) */
! 64: list rdnss_list; /* Local list of RDNSS configs (struct radv_rdnss_config) */
! 65: list dnssl_list; /* Local list of DNSSL configs (struct radv_dnssl_config) */
! 66:
! 67: u32 min_ra_int; /* Standard options from RFC 4861 */
! 68: u32 max_ra_int;
! 69: u32 min_delay;
! 70:
! 71: u8 solicited_ra_unicast; /* Send solicited RAs as unicast */
! 72:
! 73: u32 prefix_linger_time; /* How long we advertise dead prefixes with lifetime 0 */
! 74: u32 route_linger_time; /* How long we advertise dead routes with lifetime 0 */
! 75:
! 76: u8 rdnss_local; /* Global list is not used for RDNSS */
! 77: u8 dnssl_local; /* Global list is not used for DNSSL */
! 78:
! 79: u8 managed; /* Standard options from RFC 4861 */
! 80: u8 other_config;
! 81: u32 link_mtu;
! 82: u32 reachable_time;
! 83: u32 retrans_timer;
! 84: u32 current_hop_limit;
! 85: u32 default_lifetime;
! 86: u32 route_lifetime; /* Lifetime for the RFC 4191 routes */
! 87: u8 default_lifetime_sensitive; /* Whether default_lifetime depends on trigger */
! 88: u8 route_lifetime_sensitive; /* Whether route_lifetime depends on trigger */
! 89: u8 default_preference; /* Default Router Preference (RFC 4191) */
! 90: u8 route_preference; /* Specific Route Preference (RFC 4191) */
! 91: };
! 92:
! 93: struct radv_prefix_config
! 94: {
! 95: node n;
! 96: net_addr_ip6 prefix;
! 97:
! 98: u8 skip; /* Do not include this prefix to RA */
! 99: u8 onlink; /* Standard options from RFC 4861 */
! 100: u8 autonomous;
! 101: u32 valid_lifetime;
! 102: u32 preferred_lifetime;
! 103: u8 valid_lifetime_sensitive; /* Whether valid_lifetime depends on trigger */
! 104: u8 preferred_lifetime_sensitive; /* Whether preferred_lifetime depends on trigger */
! 105: };
! 106:
! 107: struct radv_rdnss_config
! 108: {
! 109: node n;
! 110: u32 lifetime; /* Valid if lifetime_mult is 0 */
! 111: u16 lifetime_mult; /* Lifetime specified as multiple of max_ra_int */
! 112: ip6_addr server; /* IP address of recursive DNS server */
! 113: };
! 114:
! 115: struct radv_dnssl_config
! 116: {
! 117: node n;
! 118: u32 lifetime; /* Valid if lifetime_mult is 0 */
! 119: u16 lifetime_mult; /* Lifetime specified as multiple of max_ra_int */
! 120: u8 dlen_first; /* Length of first label in domain */
! 121: u8 dlen_all; /* Both dlen_ filled in radv_process_domain() */
! 122: char *domain; /* Domain for DNS search list, in processed form */
! 123: };
! 124:
! 125: /*
! 126: * One more specific route as per RFC 4191.
! 127: *
! 128: * Note that it does *not* contain the next hop field. The next hop is always
! 129: * the router sending the advertisment and the more specific route only allows
! 130: * overriding the preference of the route.
! 131: */
! 132: struct radv_route
! 133: {
! 134: u32 lifetime; /* Lifetime from an attribute */
! 135: u8 lifetime_set; /* Whether lifetime is defined */
! 136: u8 preference; /* Preference of the route, RA_PREF_* */
! 137: u8 preference_set; /* Whether preference is defined */
! 138: u8 valid; /* Whethe route is valid or withdrawn */
! 139: btime changed; /* Last time when the route changed */
! 140:
! 141: struct fib_node n;
! 142: };
! 143:
! 144: struct radv_proto
! 145: {
! 146: struct proto p;
! 147: list iface_list; /* List of active ifaces */
! 148: u8 valid; /* Router is valid for forwarding, used for shutdown */
! 149: u8 active; /* Whether radv is active w.r.t. triggers */
! 150: u8 fib_up; /* FIB table (routes) is initialized */
! 151: struct fib routes; /* FIB table of specific routes (struct radv_route) */
! 152: btime prune_time; /* Next time of route table pruning */
! 153: };
! 154:
! 155: struct radv_prefix /* One prefix we advertise */
! 156: {
! 157: node n;
! 158: net_addr_ip6 prefix;
! 159:
! 160: u8 valid; /* Is the prefix valid? If not, we advertise it
! 161: with 0 lifetime, so clients stop using it */
! 162: u8 mark; /* A temporary mark for processing */
! 163: btime changed; /* Last time when the prefix changed */
! 164: struct radv_prefix_config *cf; /* The config tied to this prefix */
! 165: };
! 166:
! 167: struct radv_iface
! 168: {
! 169: node n;
! 170: struct radv_proto *ra;
! 171: struct radv_iface_config *cf; /* Related config, must be updated in reconfigure */
! 172: struct iface *iface;
! 173: struct ifa *addr; /* Link-local address of iface */
! 174: struct pool *pool; /* A pool for interface-specific things */
! 175: list prefixes; /* The prefixes we advertise (struct radv_prefix) */
! 176: btime prune_time; /* Next time of prefix list pruning */
! 177: btime valid_time; /* Cached packet is valid until first linger timeout */
! 178:
! 179: timer *timer;
! 180: struct object_lock *lock;
! 181: sock *sk;
! 182:
! 183: btime last; /* Time of last sending of RA */
! 184: u16 plen; /* Length of prepared RA in tbuf, or 0 if not valid */
! 185: byte initial; /* How many RAs are still to be sent as initial */
! 186: };
! 187:
! 188: #define RA_EV_INIT 1 /* Switch to initial mode */
! 189: #define RA_EV_CHANGE 2 /* Change of options or prefixes */
! 190: #define RA_EV_RS 3 /* Received RS */
! 191:
! 192: /* Default Router Preferences (RFC 4191) */
! 193: #define RA_PREF_LOW 0x18
! 194: #define RA_PREF_MEDIUM 0x00
! 195: #define RA_PREF_HIGH 0x08
! 196: #define RA_PREF_MASK 0x18
! 197:
! 198: /* Attributes */
! 199: #define EA_RA_PREFERENCE EA_CODE(PROTOCOL_RADV, 0)
! 200: #define EA_RA_LIFETIME EA_CODE(PROTOCOL_RADV, 1)
! 201:
! 202: #ifdef LOCAL_DEBUG
! 203: #define RADV_FORCE_DEBUG 1
! 204: #else
! 205: #define RADV_FORCE_DEBUG 0
! 206: #endif
! 207: #define RADV_TRACE(flags, msg, args...) do { if ((p->p.debug & flags) || RADV_FORCE_DEBUG) \
! 208: log(L_TRACE "%s: " msg, p->p.name , ## args ); } while(0)
! 209:
! 210:
! 211: /* Invalidate cached RA packet */
! 212: static inline void radv_invalidate(struct radv_iface *ifa)
! 213: { ifa->plen = 0; }
! 214:
! 215: /* radv.c */
! 216: void radv_iface_notify(struct radv_iface *ifa, int event);
! 217:
! 218: /* packets.c */
! 219: int radv_process_domain(struct radv_dnssl_config *cf);
! 220: void radv_send_ra(struct radv_iface *ifa, ip_addr to);
! 221: int radv_sk_open(struct radv_iface *ifa);
! 222:
! 223:
! 224:
! 225: #endif /* _BIRD_RADV_H_ */
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to radv.h CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / bird2 / proto / radv