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Netlink: Add option to specify netlink socket receive buffer size

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Add option 'netlink rx buffer' to specify netlink socket receive buffer
size. Uses SO_RCVBUFFORCE, so it can override rmem_max limit.

Thanks to Trisha Biswas and Michal for the original patches.
This commit is contained in:
Ondrej Zajicek (work)
2022-01-17 05:11:29 +01:00
parent bbc33f6ec3
commit 81ee6cda2e
5 changed files with 2243 additions and 1 deletions
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doc/bird.sgml
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@@ -3248,6 +3248,12 @@ channels.
allows to specify a limit on maximal number of nexthops in one route. By
default, multipath merging is disabled. If enabled, default value of the
limit is 16.
<tag><label id="krt-netlink-rx-buffer">netlink rx buffer <m/number/</tag> (Linux)
Set kernel receive buffer size (in bytes) for the netlink socket. The default
value is OS-dependent (from the <file>/proc/sys/net/core/rmem_default</file>
file), If you get some "Kernel dropped some netlink message ..." warnings,
you may increase this value.
</descrip>
<sect1>Attributes