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Diffstat (limited to 'pimd/pim_tlv.h')
| -rw-r--r-- | pimd/pim_tlv.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/pimd/pim_tlv.h b/pimd/pim_tlv.h new file mode 100644 index 0000000..64b3a0b --- /dev/null +++ b/pimd/pim_tlv.h @@ -0,0 +1,122 @@ +/* + * PIM for Quagga + * Copyright (C) 2008 Everton da Silva Marques + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef PIM_TLV_H +#define PIM_TLV_H + +#include <zebra.h> + +#include "config.h" +#include "if.h" +#include "linklist.h" + +#define PIM_MSG_OPTION_TYPE_HOLDTIME (1) +#define PIM_MSG_OPTION_TYPE_LAN_PRUNE_DELAY (2) +#define PIM_MSG_OPTION_TYPE_DR_PRIORITY (19) +#define PIM_MSG_OPTION_TYPE_GENERATION_ID (20) +#define PIM_MSG_OPTION_TYPE_DM_STATE_REFRESH (21) +#define PIM_MSG_OPTION_TYPE_ADDRESS_LIST (24) + +typedef uint32_t pim_hello_options; +#define PIM_OPTION_MASK_HOLDTIME (1 << 0) /* recv holdtime */ +#define PIM_OPTION_MASK_LAN_PRUNE_DELAY (1 << 1) /* recv lan_prune_delay */ +#define PIM_OPTION_MASK_DR_PRIORITY (1 << 2) /* recv dr_priority */ +#define PIM_OPTION_MASK_GENERATION_ID (1 << 3) /* recv generation_id */ +#define PIM_OPTION_MASK_ADDRESS_LIST (1 << 4) /* recv secondary address list */ +#define PIM_OPTION_MASK_CAN_DISABLE_JOIN_SUPPRESSION (1 << 5) /* T bit value (valid if recv lan_prune_delay) */ + +#define PIM_RPT_BIT_MASK (1 << 0) +#define PIM_WILDCARD_BIT_MASK (1 << 1) + +#define PIM_OPTION_SET(options, option_mask) ((options) |= (option_mask)) +#define PIM_OPTION_UNSET(options, option_mask) ((options) &= ~(option_mask)) +#define PIM_OPTION_IS_SET(options, option_mask) ((options) & (option_mask)) + +#define PIM_TLV_GET_UINT16(buf) \ + ({ \ + uint16_t _tmp; \ + memcpy(&_tmp, (buf), sizeof(uint16_t)); \ + ntohs(_tmp); \ + }) +#define PIM_TLV_GET_UINT32(buf) \ + ({ \ + uint32_t _tmp; \ + memcpy(&_tmp, (buf), sizeof(uint32_t)); \ + ntohl(_tmp); \ + }) +#define PIM_TLV_GET_TYPE(buf) PIM_TLV_GET_UINT16(buf) +#define PIM_TLV_GET_LENGTH(buf) PIM_TLV_GET_UINT16(buf) +#define PIM_TLV_GET_HOLDTIME(buf) PIM_TLV_GET_UINT16(buf) +#define PIM_TLV_GET_PROPAGATION_DELAY(buf) (PIM_TLV_GET_UINT16(buf) & 0x7FFF) +#define PIM_TLV_GET_OVERRIDE_INTERVAL(buf) PIM_TLV_GET_UINT16(buf) +#define PIM_TLV_GET_CAN_DISABLE_JOIN_SUPPRESSION(buf) ((*(const uint8_t *)(buf)) & 0x80) +#define PIM_TLV_GET_DR_PRIORITY(buf) PIM_TLV_GET_UINT32(buf) +#define PIM_TLV_GET_GENERATION_ID(buf) PIM_TLV_GET_UINT32(buf) + +#define PIM_TLV_TYPE_SIZE (2) +#define PIM_TLV_LENGTH_SIZE (2) +#define PIM_TLV_MIN_SIZE (PIM_TLV_TYPE_SIZE + PIM_TLV_LENGTH_SIZE) +#define PIM_TLV_OPTION_SIZE(option_len) (PIM_TLV_MIN_SIZE + (option_len)) + +uint8_t *pim_tlv_append_uint16(uint8_t *buf, const uint8_t *buf_pastend, + uint16_t option_type, uint16_t option_value); +uint8_t *pim_tlv_append_2uint16(uint8_t *buf, const uint8_t *buf_pastend, + uint16_t option_type, uint16_t option_value1, + uint16_t option_value2); +uint8_t *pim_tlv_append_uint32(uint8_t *buf, const uint8_t *buf_pastend, + uint16_t option_type, uint32_t option_value); +uint8_t *pim_tlv_append_addrlist_ucast(uint8_t *buf, const uint8_t *buf_pastend, + struct list *ifconnected, int family); + +int pim_tlv_parse_holdtime(const char *ifname, pim_addr src_addr, + pim_hello_options *hello_options, + uint16_t *hello_option_holdtime, uint16_t option_len, + const uint8_t *tlv_curr); +int pim_tlv_parse_lan_prune_delay(const char *ifname, pim_addr src_addr, + pim_hello_options *hello_options, + uint16_t *hello_option_propagation_delay, + uint16_t *hello_option_override_interval, + uint16_t option_len, const uint8_t *tlv_curr); +int pim_tlv_parse_dr_priority(const char *ifname, pim_addr src_addr, + pim_hello_options *hello_options, + uint32_t *hello_option_dr_priority, + uint16_t option_len, const uint8_t *tlv_curr); +int pim_tlv_parse_generation_id(const char *ifname, pim_addr src_addr, + pim_hello_options *hello_options, + uint32_t *hello_option_generation_id, + uint16_t option_len, const uint8_t *tlv_curr); +int pim_tlv_parse_addr_list(const char *ifname, pim_addr src_addr, + pim_hello_options *hello_options, + struct list **hello_option_addr_list, + uint16_t option_len, const uint8_t *tlv_curr); + +int pim_encode_addr_ucast(uint8_t *buf, pim_addr addr); +int pim_encode_addr_ucast_prefix(uint8_t *buf, struct prefix *p); +int pim_encode_addr_group(uint8_t *buf, afi_t afi, int bidir, int scope, + pim_addr group); + +int pim_parse_addr_ucast(pim_addr *out, const uint8_t *buf, int buf_size, + bool *wrong_af); +int pim_parse_addr_ucast_prefix(struct prefix *out, const uint8_t *buf, + int buf_size); +int pim_parse_addr_group(pim_sgaddr *sg, const uint8_t *buf, int buf_size); +int pim_parse_addr_source(pim_sgaddr *sg, uint8_t *flags, const uint8_t *buf, + int buf_size); + +#endif /* PIM_TLV_H */ |