Annotation of embedaddon/quagga/bgpd/bgp_advertise.h, revision 1.1.1.1
1.1 misho 1: /* BGP advertisement and adjacency
2: Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3:
4: This file is part of GNU Zebra.
5:
6: GNU Zebra is free software; you can redistribute it and/or modify it
7: under the terms of the GNU General Public License as published by the
8: Free Software Foundation; either version 2, or (at your option) any
9: later version.
10:
11: GNU Zebra is distributed in the hope that it will be useful, but
12: WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with GNU Zebra; see the file COPYING. If not, write to the Free
18: Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
19: 02111-1307, USA. */
20:
21: #ifndef _QUAGGA_BGP_ADVERTISE_H
22: #define _QUAGGA_BGP_ADVERTISE_H
23:
24: /* BGP advertise FIFO. */
25: struct bgp_advertise_fifo
26: {
27: struct bgp_advertise *next;
28: struct bgp_advertise *prev;
29: };
30:
31: /* BGP advertise attribute. */
32: struct bgp_advertise_attr
33: {
34: /* Head of advertisement pointer. */
35: struct bgp_advertise *adv;
36:
37: /* Reference counter. */
38: unsigned long refcnt;
39:
40: /* Attribute pointer to be announced. */
41: struct attr *attr;
42: };
43:
44: struct bgp_advertise
45: {
46: /* FIFO for advertisement. */
47: struct bgp_advertise_fifo fifo;
48:
49: /* Link list for same attribute advertise. */
50: struct bgp_advertise *next;
51: struct bgp_advertise *prev;
52:
53: /* Prefix information. */
54: struct bgp_node *rn;
55:
56: /* Reference pointer. */
57: struct bgp_adj_out *adj;
58:
59: /* Advertisement attribute. */
60: struct bgp_advertise_attr *baa;
61:
62: /* BGP info. */
63: struct bgp_info *binfo;
64: };
65:
66: /* BGP adjacency out. */
67: struct bgp_adj_out
68: {
69: /* Lined list pointer. */
70: struct bgp_adj_out *next;
71: struct bgp_adj_out *prev;
72:
73: /* Advertised peer. */
74: struct peer *peer;
75:
76: /* Advertised attribute. */
77: struct attr *attr;
78:
79: /* Advertisement information. */
80: struct bgp_advertise *adv;
81: };
82:
83: /* BGP adjacency in. */
84: struct bgp_adj_in
85: {
86: /* Linked list pointer. */
87: struct bgp_adj_in *next;
88: struct bgp_adj_in *prev;
89:
90: /* Received peer. */
91: struct peer *peer;
92:
93: /* Received attribute. */
94: struct attr *attr;
95: };
96:
97: /* BGP advertisement list. */
98: struct bgp_synchronize
99: {
100: struct bgp_advertise_fifo update;
101: struct bgp_advertise_fifo withdraw;
102: struct bgp_advertise_fifo withdraw_low;
103: };
104:
105: /* BGP adjacency linked list. */
106: #define BGP_INFO_ADD(N,A,TYPE) \
107: do { \
108: (A)->prev = NULL; \
109: (A)->next = (N)->TYPE; \
110: if ((N)->TYPE) \
111: (N)->TYPE->prev = (A); \
112: (N)->TYPE = (A); \
113: } while (0)
114:
115: #define BGP_INFO_DEL(N,A,TYPE) \
116: do { \
117: if ((A)->next) \
118: (A)->next->prev = (A)->prev; \
119: if ((A)->prev) \
120: (A)->prev->next = (A)->next; \
121: else \
122: (N)->TYPE = (A)->next; \
123: } while (0)
124:
125: #define BGP_ADJ_IN_ADD(N,A) BGP_INFO_ADD(N,A,adj_in)
126: #define BGP_ADJ_IN_DEL(N,A) BGP_INFO_DEL(N,A,adj_in)
127: #define BGP_ADJ_OUT_ADD(N,A) BGP_INFO_ADD(N,A,adj_out)
128: #define BGP_ADJ_OUT_DEL(N,A) BGP_INFO_DEL(N,A,adj_out)
129:
130: /* Prototypes. */
131: extern void bgp_adj_out_set (struct bgp_node *, struct peer *, struct prefix *,
132: struct attr *, afi_t, safi_t, struct bgp_info *);
133: extern void bgp_adj_out_unset (struct bgp_node *, struct peer *, struct prefix *,
134: afi_t, safi_t);
135: extern void bgp_adj_out_remove (struct bgp_node *, struct bgp_adj_out *,
136: struct peer *, afi_t, safi_t);
137: extern int bgp_adj_out_lookup (struct peer *, struct prefix *, afi_t, safi_t,
138: struct bgp_node *);
139:
140: extern void bgp_adj_in_set (struct bgp_node *, struct peer *, struct attr *);
141: extern void bgp_adj_in_unset (struct bgp_node *, struct peer *);
142: extern void bgp_adj_in_remove (struct bgp_node *, struct bgp_adj_in *);
143:
144: extern struct bgp_advertise *
145: bgp_advertise_clean (struct peer *, struct bgp_adj_out *, afi_t, safi_t);
146:
147: extern void bgp_sync_init (struct peer *);
148: extern void bgp_sync_delete (struct peer *);
149:
150: #endif /* _QUAGGA_BGP_ADVERTISE_H */
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