1 /* 2 PIM for Quagga 3 Copyright (C) 2008 Everton da Silva Marques 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 $QuaggaId: $Format:%an, %ai, %h$ $ 21 */ 22 23 #ifndef PIM_TLV_H 24 #define PIM_TLV_H 25 26 #include <zebra.h> 27 28 #include "config.h" 29 #include "if.h" 30 #include "linklist.h" 31 32 #ifdef HAVE_INTTYPES_H 33 #include <inttypes.h> 34 #endif /* HAVE_INTTYPES_H */ 35 36 #define PIM_MSG_OPTION_TYPE_HOLDTIME (1) 37 #define PIM_MSG_OPTION_TYPE_LAN_PRUNE_DELAY (2) 38 #define PIM_MSG_OPTION_TYPE_DR_PRIORITY (19) 39 #define PIM_MSG_OPTION_TYPE_GENERATION_ID (20) 40 #define PIM_MSG_OPTION_TYPE_DM_STATE_REFRESH (21) 41 #define PIM_MSG_OPTION_TYPE_ADDRESS_LIST (24) 42 43 typedef uint32_t pim_hello_options; 44 #define PIM_OPTION_MASK_HOLDTIME (1 << 0) /* recv holdtime */ 45 #define PIM_OPTION_MASK_LAN_PRUNE_DELAY (1 << 1) /* recv lan_prune_delay */ 46 #define PIM_OPTION_MASK_DR_PRIORITY (1 << 2) /* recv dr_priority */ 47 #define PIM_OPTION_MASK_GENERATION_ID (1 << 3) /* recv generation_id */ 48 #define PIM_OPTION_MASK_ADDRESS_LIST (1 << 4) /* recv secondary address list */ 49 #define PIM_OPTION_MASK_CAN_DISABLE_JOIN_SUPPRESSION (1 << 5) /* T bit value (valid if recv lan_prune_delay) */ 50 51 #define PIM_RPT_BIT_MASK (1 << 0) 52 #define PIM_WILDCARD_BIT_MASK (1 << 1) 53 54 #define PIM_OPTION_SET(options, option_mask) ((options) |= (option_mask)) 55 #define PIM_OPTION_UNSET(options, option_mask) ((options) &= ~(option_mask)) 56 #define PIM_OPTION_IS_SET(options, option_mask) ((options) & (option_mask)) 57 58 #define PIM_TLV_GET_UINT16(buf) ntohs(*(const uint16_t *)(buf)) 59 #define PIM_TLV_GET_UINT32(buf) ntohl(*(const uint32_t *)(buf)) 60 #define PIM_TLV_GET_TYPE(buf) PIM_TLV_GET_UINT16(buf) 61 #define PIM_TLV_GET_LENGTH(buf) PIM_TLV_GET_UINT16(buf) 62 #define PIM_TLV_GET_HOLDTIME(buf) PIM_TLV_GET_UINT16(buf) 63 #define PIM_TLV_GET_PROPAGATION_DELAY(buf) (PIM_TLV_GET_UINT16(buf) & 0x7FFF) 64 #define PIM_TLV_GET_OVERRIDE_INTERVAL(buf) PIM_TLV_GET_UINT16(buf) 65 #define PIM_TLV_GET_CAN_DISABLE_JOIN_SUPPRESSION(buf) ((*(const uint8_t *)(buf)) & 0x80) 66 #define PIM_TLV_GET_DR_PRIORITY(buf) PIM_TLV_GET_UINT32(buf) 67 #define PIM_TLV_GET_GENERATION_ID(buf) PIM_TLV_GET_UINT32(buf) 68 69 #define PIM_TLV_TYPE_SIZE (2) 70 #define PIM_TLV_LENGTH_SIZE (2) 71 #define PIM_TLV_MIN_SIZE (PIM_TLV_TYPE_SIZE + PIM_TLV_LENGTH_SIZE) 72 #define PIM_TLV_OPTION_SIZE(option_len) (PIM_TLV_MIN_SIZE + (option_len)) 73 74 uint8_t *pim_tlv_append_uint16(uint8_t *buf, 75 const uint8_t *buf_pastend, 76 uint16_t option_type, 77 uint16_t option_value); 78 uint8_t *pim_tlv_append_2uint16(uint8_t *buf, 79 const uint8_t *buf_pastend, 80 uint16_t option_type, 81 uint16_t option_value1, 82 uint16_t option_value2); 83 uint8_t *pim_tlv_append_uint32(uint8_t *buf, 84 const uint8_t *buf_pastend, 85 uint16_t option_type, 86 uint32_t option_value); 87 uint8_t *pim_tlv_append_addrlist_ucast(uint8_t *buf, 88 const uint8_t *buf_pastend, 89 struct list *ifconnected); 90 91 int pim_tlv_parse_holdtime(const char *ifname, struct in_addr src_addr, 92 pim_hello_options *hello_options, 93 uint16_t *hello_option_holdtime, 94 uint16_t option_len, 95 const uint8_t *tlv_curr); 96 int pim_tlv_parse_lan_prune_delay(const char *ifname, struct in_addr src_addr, 97 pim_hello_options *hello_options, 98 uint16_t *hello_option_propagation_delay, 99 uint16_t *hello_option_override_interval, 100 uint16_t option_len, 101 const uint8_t *tlv_curr); 102 int pim_tlv_parse_dr_priority(const char *ifname, struct in_addr src_addr, 103 pim_hello_options *hello_options, 104 uint32_t *hello_option_dr_priority, 105 uint16_t option_len, 106 const uint8_t *tlv_curr); 107 int pim_tlv_parse_generation_id(const char *ifname, struct in_addr src_addr, 108 pim_hello_options *hello_options, 109 uint32_t *hello_option_generation_id, 110 uint16_t option_len, 111 const uint8_t *tlv_curr); 112 int pim_tlv_parse_addr_list(const char *ifname, struct in_addr src_addr, 113 pim_hello_options *hello_options, 114 struct list **hello_option_addr_list, 115 uint16_t option_len, 116 const uint8_t *tlv_curr); 117 118 int pim_parse_addr_ucast(const char *ifname, struct in_addr src_addr, 119 struct prefix *p, 120 const uint8_t *buf, 121 int buf_size); 122 int pim_parse_addr_group(const char *ifname, struct in_addr src_addr, 123 struct prefix *p, 124 const uint8_t *buf, 125 int buf_size); 126 int pim_parse_addr_source(const char *ifname, 127 struct in_addr src_addr, 128 struct prefix *p, 129 uint8_t *flags, 130 const uint8_t *buf, 131 int buf_size); 132 133 #endif /* PIM_TLV_H */ 134