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Many changes in I/O and OSPF sockets and packet handling.

Browse Source 
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
This commit is contained in:
Ondrej Zajicek
2014-02-06 17:46:01 +01:00
parent f48fa14214
commit 48e5f32db6
26 changed files with 701 additions and 449 deletions
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30
doc/bird.sgml
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@@ -2212,7 +2212,9 @@ protocol ospf <name> {
wait <num>;
dead count <num>;
dead <num>;
secondary <switch>;
rx buffer [normal|large|<num>];
tx length <num>;
type [broadcast|bcast|pointopoint|ptp|
nonbroadcast|nbma|pointomultipoint|ptmp];
strict nonbroadcast <switch>;
@@ -2419,12 +2421,32 @@ protocol ospf <name> {
<tag>dead <M>num</M></tag>
When the router does not receive any messages from a neighbor in
<m/dead/ seconds, it will consider the neighbor down. If both directives
<m/dead count/ and <m/dead/ are used, <m/dead/ has precendence.
<cf/dead count/ and <cf/dead/ are used, <cf/dead/ has precendence.
<tag>secondary <M>switch</M></tag>
On BSD systems, older versions of BIRD supported OSPFv2 only for the
primary IP address of an interface, other IP ranges on the interface
were handled as stub networks. Since v1.4.1, regular operation on
secondary IP addresses is supported, but disabled by default for
compatibility. This option allows to enable it. The option is a
transitional measure, will be removed in the next major release as the
behavior will be changed. On Linux systems, the option is irrelevant, as
operation on non-primary addresses is already the regular behavior.
<tag>rx buffer <M>num</M></tag>
This sets the size of buffer used for receiving packets. The buffer should
be bigger than maximal size of any packets. Value NORMAL (default)
means 2*MTU, value LARGE means maximal allowed packet - 65535.
This option allows to specify the size of buffers used for packet
processing. The buffer size should be bigger than maximal size of any
packets. By default, buffers are dynamically resized as needed, but a
fixed value could be specified. Value <cf/large/ means maximal allowed
packet size - 65535.
<tag>tx length <M>num</M></tag>
Transmitted OSPF messages that contain large amount of information are
segmented to separate OSPF packets to avoid IP fragmentation. This
option specifies the soft ceiling for the length of generated OSPF
packets. Default value is the MTU of the network interface. Note that
larger OSPF packets may still be generated if underlying OSPF messages
cannot be splitted (e.g. when one large LSA is propagated).
<tag>type broadcast|bcast</tag>
BIRD detects a type of a connected network automatically, but