]>
Commit | Line | Data |
---|---|---|
2a333e0f | 1 | /* |
2 | * IP MSDP packet helpers | |
3 | * Copyright (C) 2016 Cumulus Networks, Inc. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; see the file COPYING; if not, write to the | |
17 | * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
18 | * MA 02110-1301 USA | |
19 | */ | |
20 | #ifndef PIM_MSDP_PACKET_H | |
21 | #define PIM_MSDP_PACKET_H | |
22 | ||
23 | /* type and length of a single tlv can be consider packet header */ | |
24 | #define PIM_MSDP_HEADER_SIZE 3 | |
3c72d654 | 25 | |
26 | /* Keepalive TLV | |
27 | 0 1 2 3 | |
28 | 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
29 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
30 | | 4 | 3 | | |
31 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
32 | */ | |
2a333e0f | 33 | #define PIM_MSDP_KA_TLV_MAX_SIZE PIM_MSDP_HEADER_SIZE |
3c72d654 | 34 | |
35 | /* Source-Active TLV (x=8, y=12xEntryCount) | |
36 | 0 1 2 3 | |
37 | 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
38 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
39 | | 1 | x + y | Entry Count | | |
40 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
41 | | RP Address | | |
42 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
43 | | Reserved | Sprefix Len | \ | |
44 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ \ | |
45 | | Group Address | ) z | |
46 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ / | |
47 | | Source Address | / | |
48 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
49 | */ | |
50 | #define PIM_MSDP_SA_TLV_MAX_SIZE 9192 | |
51 | #define PIM_MSDP_SA_X_SIZE 8 | |
52 | #define PIM_MSDP_SA_ONE_ENTRY_SIZE 12 | |
53 | #define PIM_MSDP_SA_Y_SIZE(entry_cnt) (PIM_MSDP_SA_ONE_ENTRY_SIZE * entry_cnt) | |
54 | #define PIM_MSDP_SA_ENTRY_CNT2SIZE(entry_cnt) (PIM_MSDP_SA_X_SIZE +\ | |
55 | PIM_MSDP_SA_Y_SIZE(entry_cnt)) | |
56 | /* SA TLV has to have atleast only one entry in it so x=8 + y=12 */ | |
57 | #define PIM_MSDP_SA_TLV_MIN_SIZE PIM_MSDP_SA_ENTRY_CNT2SIZE(1) | |
58 | #define PIM_MSDP_SA_MAX_ENTRY_CNT ((PIM_MSDP_SA_TLV_MAX_SIZE - PIM_MSDP_SA_X_SIZE)/PIM_MSDP_SA_ONE_ENTRY_SIZE) | |
59 | ||
15ad0c71 | 60 | #define PIM_MSDP_MAX_PACKET_SIZE max(PIM_MSDP_SA_TLV_MAX_SIZE, PIM_MSDP_KA_TLV_MAX_SIZE) |
2a333e0f | 61 | |
62 | #define PIM_MSDP_PKT_TYPE_STRLEN 16 | |
63 | ||
64 | void pim_msdp_pkt_ka_tx(struct pim_msdp_peer *mp); | |
65 | int pim_msdp_read(struct thread *thread); | |
3c72d654 | 66 | void pim_msdp_pkt_sa_tx(void); |
67 | void pim_msdp_pkt_sa_tx_one(struct pim_msdp_sa *sa); | |
68 | void pim_msdp_pkt_sa_tx_to_one_peer(struct pim_msdp_peer *mp); | |
69 | ||
2a333e0f | 70 | #endif |