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bird/sysdep/cf/README
Ondrej Zajicek 48e5f32db6 Many changes in I/O and OSPF sockets and packet handling.
I/O:
 - BSD: specify src addr on IP sockets by IP_HDRINCL
 - BSD: specify src addr on UDP sockets by IP_SENDSRCADDR
 - Linux: specify src addr on IP/UDP sockets by IP_PKTINFO
 - IPv6: specify src addr on IP/UDP sockets by IPV6_PKTINFO
 - Alternative SKF_BIND flag for binding to IP address
 - Allows IP/UDP sockets without tx_hook, on these
   sockets a packet is discarded when TX queue is full
 - Use consistently SOL_ for socket layer values.

OSPF:
 - Packet src addr is always explicitly set
 - Support for secondary addresses in BSD
 - Dynamic RX/TX buffers
 - Fixes some minor buffer overruns
 - Interface option 'tx length'
 - Names for vlink pseudoifaces (vlinkX)
 - Vlinks use separate socket for TX
 - Vlinks do not use fixed associated iface
 - Fixes TTL for direct unicast packets
 - Fixes DONTROUTE for OSPF sockets
 - Use ifa->ifname instead of ifa->iface->name
2014-02-06 17:46:01 +01:00

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Available configuration variables:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CONFIG_AUTO_ROUTES Device routes are added automagically by the kernel
CONFIG_SELF_CONSCIOUS We're able to recognize whether route was installed by us
CONFIG_MULTIPLE_TABLES The kernel supports multiple routing tables
CONFIG_ALL_TABLES_AT_ONCE Kernel scanner wants to process all tables at once
CONFIG_MC_PROPER_SRC Multicast packets have source address according to socket saddr field
CONFIG_SKIP_MC_BIND Don't call bind on multicast socket (def for *BSD)
CONFIG_NO_IFACE_BIND Bind to iface is not available, use workarounds (def for *BSD)
CONFIG_UNIX_DONTROUTE Use setsockopts DONTROUTE (undef for *BSD)
CONFIG_USE_HDRINCL Use IP_HDRINCL instead of control messages for source address on raw IP sockets.
CONFIG_RESTRICTED_PRIVILEGES Implements restricted privileges using drop_uid()