tree 41899e27fe3fa8412cb1dbbc90d88aee33d40a92
parent 5c8b2ff67527cb88b770f693cebf3799036d8bc0
author Tom Parkin <tom.parkin@gmail.com> 1584045752 +0000
committer Ian Lance Taylor <iant@golang.org> 1584390106 +0000

unix: implement L2TPIP socket address on Linux

Add constants and types to support IP-encapsulated L2TP/RFC3931
tunnels on Linux systems.

The L2TP subsystem for IP encapsulated tunnels hooks into the inet
kernel code using a specific IP protocol value.  In order to handle
this, anyToSockaddr now has to query the socket protocol type using
GetsockoptInt for the AF_INET and AF_INET6 address families.

Although this change is reasonably simple, unit tests have been added
to validate handling of the new types.

Fixes golang/go#37787

Change-Id: I16ae1e24dcced4ccc6ce6a79a90a5a2f6a560967
GitHub-Last-Rev: ca554ad1b6d3a5e55c70f05cf0e542968fa2418c
GitHub-Pull-Request: golang/sys#60
Reviewed-on: https://go-review.googlesource.com/c/sys/+/223157
Reviewed-by: Ian Lance Taylor <iant@golang.org>