OpenVPN
Functions
mroute.c File Reference
#include "syshead.h"
#include "mroute.h"
#include "proto.h"
#include "error.h"
#include "socket_util.h"
#include "memdbg.h"
#include "siphash.h"
Include dependency graph for mroute.c:

Go to the source code of this file.

Functions

void mroute_addr_init (struct mroute_addr *addr)
static bool is_mac_mcast_addr (const uint8_t *mac)
static bool is_mac_mcast_maddr (const struct mroute_addr *addr)
bool mroute_learnable_address (const struct mroute_addr *addr, struct gc_arena *gc)
static void mroute_get_in_addr_t (struct mroute_addr *ma, const in_addr_t src)
static void mroute_get_in6_addr (struct mroute_addr *ma, const struct in6_addr src)
static bool mroute_is_mcast (const in_addr_t addr)
static bool mroute_is_mcast_ipv6 (const struct in6_addr addr)
unsigned int mroute_extract_addr_ip (struct mroute_addr *src, struct mroute_addr *dest, const struct buffer *buf)
static void mroute_copy_ether_to_addr (struct mroute_addr *maddr, const uint8_t *ether_addr, uint16_t vid)
unsigned int mroute_extract_addr_ether (struct mroute_addr *src, struct mroute_addr *dest, uint16_t vid, const struct buffer *buf)
bool mroute_extract_openvpn_sockaddr (struct mroute_addr *addr, const struct openvpn_sockaddr *osaddr, bool use_port)
void mroute_addr_mask_host_bits (struct mroute_addr *ma)
uint64_t mroute_addr_hash_function (const void *key, const uint8_t hash_key[HASH_KEY_LEN])
bool mroute_addr_compare_function (const void *key1, const void *key2)
const char * mroute_addr_print (const struct mroute_addr *ma, struct gc_arena *gc)
const char * mroute_addr_print_ex (const struct mroute_addr *ma, const unsigned int flags, struct gc_arena *gc)
struct mroute_helper * mroute_helper_init (int ageable_ttl_secs)
static void mroute_helper_regenerate (struct mroute_helper *mh)
void mroute_helper_add_iroute46 (struct mroute_helper *mh, int netbits)
void mroute_helper_del_iroute46 (struct mroute_helper *mh, int netbits)
void mroute_helper_free (struct mroute_helper *mh)

Function Documentation

◆ is_mac_mcast_addr()

bool is_mac_mcast_addr ( const uint8_t * mac)
inlinestatic

Definition at line 49 of file mroute.c.

Referenced by is_mac_mcast_maddr(), and mroute_extract_addr_ether().

◆ is_mac_mcast_maddr()

bool is_mac_mcast_maddr ( const struct mroute_addr * addr)
inlinestatic

Definition at line 55 of file mroute.c.

References mroute_addr::addr, mroute_addr::ether, is_mac_mcast_addr(), MR_ADDR_ETHER, MR_ADDR_MASK, and mroute_addr::type.

Referenced by mroute_learnable_address().

◆ mroute_addr_compare_function()

bool mroute_addr_compare_function ( const void * key1,
const void * key2 )

Definition at line 366 of file mroute.c.

References mroute_addr_equal().

Referenced by multi_init().

◆ mroute_addr_hash_function()

uint64_t mroute_addr_hash_function ( const void * key,
const uint8_t hash_key[HASH_KEY_LEN] )

Definition at line 359 of file mroute.c.

References HASH_KEY_LEN, mroute_addr_hash_len(), mroute_addr_hash_ptr(), and siphash_hash_func().

Referenced by multi_init().

◆ mroute_addr_init()

void mroute_addr_init ( struct mroute_addr * addr)

Definition at line 39 of file mroute.c.

References CLEAR.

Referenced by multi_create_instance().

◆ mroute_addr_mask_host_bits()

void mroute_addr_mask_host_bits ( struct mroute_addr * ma)

Definition at line 319 of file mroute.c.

References mroute_addr::addr, ASSERT, MR_ADDR_IPV4, MR_ADDR_IPV6, MR_ADDR_MASK, mroute_addr::netbits, netbits_to_netmask(), mroute_addr::type, mroute_addr::v4, and mroute_addr::v6.

Referenced by multi_get_instance_by_virtual_addr(), and multi_learn_in6_addr().

◆ mroute_addr_print()

const char * mroute_addr_print ( const struct mroute_addr * ma,
struct gc_arena * gc )

Definition at line 372 of file mroute.c.

References gc, MAPF_IA_EMPTY_IF_UNDEF, and mroute_addr_print_ex().

Referenced by check_stale_routes(), handle_connection_attempt(), learn_address_script(), mroute_learnable_address(), multi_check_dest_addr_allowed(), multi_create_instance_tcp(), multi_get_create_instance_udp(), multi_get_instance_by_virtual_addr(), multi_get_instance_udp_data(), multi_instance_string(), multi_learn_addr(), multi_print_status(), multi_process_incoming_link_data(), multi_reap_range(), and multi_unlearn_addr().

◆ mroute_addr_print_ex()

const char * mroute_addr_print_ex ( const struct mroute_addr * ma,
const unsigned int flags,
struct gc_arena * gc )

Definition at line 378 of file mroute.c.

References mroute_addr::addr, alloc_buf_gc(), BSTR, buf_printf(), mroute_addr::ether, format_hex_ex(), gc, IA_EMPTY_IF_UNDEF, IA_NET_ORDER, MAPF_IA_EMPTY_IF_UNDEF, MAPF_SHOW_ARP, MAPF_SHOW_FAMILY, MAPF_SUBNET, MR_ADDR_ETHER, MR_ADDR_IPV4, MR_ADDR_IPV6, MR_ADDR_MASK, MR_ARP, MR_WITH_NETBITS, MR_WITH_PORT, MR_WITH_PROTO, mroute_addr::netbits, netbits_to_netmask(), mroute_addr::port, print_in6_addr(), print_in_addr_t(), mroute_addr::proto, proto2ascii(), mroute_addr::type, mroute_addr::v4, mroute_addr::v4mappedv6, mroute_addr::v6, and mroute_addr::vid.

Referenced by management_learn_addr(), mroute_addr_print(), and multi_process_float().

◆ mroute_copy_ether_to_addr()

void mroute_copy_ether_to_addr ( struct mroute_addr * maddr,
const uint8_t * ether_addr,
uint16_t vid )
static

Definition at line 212 of file mroute.c.

References mroute_addr::addr, mroute_addr::ether, mroute_addr::len, MR_ADDR_ETHER, mroute_addr::netbits, OPENVPN_ETH_ALEN, mroute_addr::type, and mroute_addr::vid.

Referenced by mroute_extract_addr_ether().

◆ mroute_extract_addr_ether()

unsigned int mroute_extract_addr_ether ( struct mroute_addr * src,
struct mroute_addr * dest,
uint16_t vid,
const struct buffer * buf )

Definition at line 223 of file mroute.c.

References BLEN, CBPTR, openvpn_ethhdr::dest, is_mac_mcast_addr(), mroute_copy_ether_to_addr(), MROUTE_EXTRACT_BCAST, MROUTE_EXTRACT_SUCCEEDED, and openvpn_ethhdr::source.

Referenced by mroute_extract_addr_from_packet().

◆ mroute_extract_addr_ip()

unsigned int mroute_extract_addr_ip ( struct mroute_addr * src,
struct mroute_addr * dest,
const struct buffer * buf )

Definition at line 148 of file mroute.c.

References BLEN, BLENZ, CBPTR, openvpn_iphdr::daddr, openvpn_ipv6hdr::daddr, gc, gc_free(), gc_new(), M_INFO, M_WARN, MROUTE_EXTRACT_IGMP, MROUTE_EXTRACT_MCAST, MROUTE_EXTRACT_SUCCEEDED, mroute_get_in6_addr(), mroute_get_in_addr_t(), mroute_is_mcast(), mroute_is_mcast_ipv6(), msg, OPENVPN_IPH_GET_VER, OPENVPN_IPPROTO_IGMP, print_in6_addr(), openvpn_iphdr::protocol, openvpn_iphdr::saddr, and openvpn_ipv6hdr::saddr.

Referenced by mroute_extract_addr_from_packet().

◆ mroute_extract_openvpn_sockaddr()

bool mroute_extract_openvpn_sockaddr ( struct mroute_addr * addr,
const struct openvpn_sockaddr * osaddr,
bool use_port )

Definition at line 255 of file mroute.c.

References mroute_addr::addr, openvpn_sockaddr::addr, openvpn_sockaddr::in4, openvpn_sockaddr::in6, mroute_addr::len, MR_ADDR_IPV4, MR_ADDR_IPV6, MR_WITH_PORT, MR_WITH_PROTO, mroute_addr::netbits, mroute_addr::port, mroute_addr::proto, PROTO_NONE, openvpn_sockaddr::sa, mroute_addr::type, mroute_addr::v4, and mroute_addr::v6.

Referenced by management_callback_kill_by_addr(), multi_get_create_instance_udp(), multi_learn_in_addr_t(), multi_process_float(), and multi_tcp_instance_specific_init().

◆ mroute_get_in6_addr()

void mroute_get_in6_addr ( struct mroute_addr * ma,
const struct in6_addr src )
inlinestatic

Definition at line 120 of file mroute.c.

References mroute_addr::addr, mroute_addr::len, MR_ADDR_IPV6, mroute_addr::netbits, mroute_addr::type, and mroute_addr::v6.

Referenced by mroute_extract_addr_ip().

◆ mroute_get_in_addr_t()

void mroute_get_in_addr_t ( struct mroute_addr * ma,
const in_addr_t src )
inlinestatic

Definition at line 108 of file mroute.c.

References mroute_addr::addr, mroute_addr::len, MR_ADDR_IPV4, mroute_addr::netbits, mroute_addr::type, and mroute_addr::v4.

Referenced by mroute_extract_addr_ip().

◆ mroute_helper_add_iroute46()

void mroute_helper_add_iroute46 ( struct mroute_helper * mh,
int netbits )

Definition at line 521 of file mroute.c.

References ASSERT, mroute_helper::cache_generation, MR_HELPER_NET_LEN, mroute_helper_regenerate(), and mroute_helper::net_len_refcount.

Referenced by multi_add_iroutes().

◆ mroute_helper_del_iroute46()

void mroute_helper_del_iroute46 ( struct mroute_helper * mh,
int netbits )

Definition at line 536 of file mroute.c.

References ASSERT, mroute_helper::cache_generation, MR_HELPER_NET_LEN, mroute_helper_regenerate(), and mroute_helper::net_len_refcount.

Referenced by multi_del_iroutes().

◆ mroute_helper_free()

void mroute_helper_free ( struct mroute_helper * mh)

Definition at line 552 of file mroute.c.

Referenced by multi_uninit().

◆ mroute_helper_init()

struct mroute_helper * mroute_helper_init ( int ageable_ttl_secs)

Definition at line 483 of file mroute.c.

References mroute_helper::ageable_ttl_secs, and ALLOC_OBJ_CLEAR.

Referenced by multi_init().

◆ mroute_helper_regenerate()

void mroute_helper_regenerate ( struct mroute_helper * mh)
static

Definition at line 492 of file mroute.c.

References alloc_buf_gc(), BSTR, buf_printf(), check_debug_level(), D_MULTI_DEBUG, dmsg, gc, gc_free(), gc_new(), MR_HELPER_NET_LEN, mroute_helper::n_net_len, mroute_helper::net_len, and mroute_helper::net_len_refcount.

Referenced by mroute_helper_add_iroute46(), and mroute_helper_del_iroute46().

◆ mroute_is_mcast()

bool mroute_is_mcast ( const in_addr_t addr)
inlinestatic

Definition at line 132 of file mroute.c.

References IP_MCAST_NETWORK, and IP_MCAST_SUBNET_MASK.

Referenced by mroute_extract_addr_ip().

◆ mroute_is_mcast_ipv6()

bool mroute_is_mcast_ipv6 ( const struct in6_addr addr)
inlinestatic

Definition at line 141 of file mroute.c.

Referenced by mroute_extract_addr_ip().

◆ mroute_learnable_address()

bool mroute_learnable_address ( const struct mroute_addr * addr,
struct gc_arena * gc )

Definition at line 64 of file mroute.c.

References D_MULTI_LOW, gc, is_mac_mcast_maddr(), mroute_addr::len, MR_WITH_NETBITS, mroute_addr_print(), msg, mroute_addr::netbits, mroute_addr::raw_addr, and mroute_addr::type.

Referenced by multi_learn_addr().

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