projects / mirror_frr.git / blame
| 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 | * | |
| 896014f4 DL |
15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; see the file COPYING; if not, write to the Free Software | |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 2a333e0f | 18 | */ |
| 19 | #ifndef PIM_MSDP_PACKET_H | |
| 20 | #define PIM_MSDP_PACKET_H | |
| 21 | ||
| 22 | /* type and length of a single tlv can be consider packet header */ | |
| 23 | #define PIM_MSDP_HEADER_SIZE 3 | |
| 3c72d654 | 24 | |
| 25 | /* Keepalive TLV | |
| 26 | 0 1 2 3 | |
| 27 | 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 | |
| 28 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 29 | | 4 | 3 | | |
| 30 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 31 | */ | |
| 2a333e0f | 32 | #define PIM_MSDP_KA_TLV_MAX_SIZE PIM_MSDP_HEADER_SIZE |
| 3c72d654 | 33 | |
| 34 | /* Source-Active TLV (x=8, y=12xEntryCount) | |
| 35 | 0 1 2 3 | |
| 36 | 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 | |
| 37 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 38 | | 1 | x + y | Entry Count | | |
| 39 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 40 | | RP Address | | |
| 41 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 42 | | Reserved | Sprefix Len | \ | |
| 43 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ \ | |
| 44 | | Group Address | ) z | |
| 45 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ / | |
| 46 | | Source Address | / | |
| 47 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 48 | */ | |
| 49 | #define PIM_MSDP_SA_TLV_MAX_SIZE 9192 | |
| 50 | #define PIM_MSDP_SA_X_SIZE 8 | |
| 51 | #define PIM_MSDP_SA_ONE_ENTRY_SIZE 12 | |
| 52 | #define PIM_MSDP_SA_Y_SIZE(entry_cnt) (PIM_MSDP_SA_ONE_ENTRY_SIZE * entry_cnt) | |
| d62a17ae | 53 | #define PIM_MSDP_SA_ENTRY_CNT2SIZE(entry_cnt) \ |
| 54 | (PIM_MSDP_SA_X_SIZE + PIM_MSDP_SA_Y_SIZE(entry_cnt)) | |
| 3c72d654 | 55 | /* SA TLV has to have atleast only one entry in it so x=8 + y=12 */ |
| 56 | #define PIM_MSDP_SA_TLV_MIN_SIZE PIM_MSDP_SA_ENTRY_CNT2SIZE(1) | |
| c024cfac | 57 | /* XXX: theoretically we can fix a max of 255 but that may result in packet |
| 58 | * fragmentation */ | |
| 59 | #define PIM_MSDP_SA_MAX_ENTRY_CNT 120 | |
| 3c72d654 | 60 | |
| 15ad0c71 | 61 | #define PIM_MSDP_MAX_PACKET_SIZE max(PIM_MSDP_SA_TLV_MAX_SIZE, PIM_MSDP_KA_TLV_MAX_SIZE) |
| 2a333e0f | 62 | |
| 63 | #define PIM_MSDP_PKT_TYPE_STRLEN 16 | |
| 64 | ||
| 65 | void pim_msdp_pkt_ka_tx(struct pim_msdp_peer *mp); | |
| 66 | int pim_msdp_read(struct thread *thread); | |
| 472ad383 | 67 | void pim_msdp_pkt_sa_tx(struct pim_instance *pim); |
| 3c72d654 | 68 | void pim_msdp_pkt_sa_tx_one(struct pim_msdp_sa *sa); |
| 69 | void pim_msdp_pkt_sa_tx_to_one_peer(struct pim_msdp_peer *mp); | |
| 70 | ||
| 2a333e0f | 71 | #endif |