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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* PIM for Quagga
* Copyright (C) 2008 Everton da Silva Marques
*/
#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 interface *ifp, 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 */
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