18 Oct
2017
18 Oct
'17
12:57 p.m.
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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/osmo-ggsn/commit/?id=859f9b0752419d43928d465bc96a87…
commit 859f9b0752419d43928d465bc96a87238c6d7940
Author: Pau Espin Pedrol <pespin(a)sysmocom.de>
Date: Mon Oct 16 14:52:25 2017 +0200
ippool: Implement and use blacklist instead of blindly using IPPOOL_NOGATEWAY
Commit dda21ed7d4a897c9284c69175d0da598598eae40 modified previous calls
to ippool_new() removing the pass of flags to avoid allocating certain
problematic IPs from the pool to MS, such as the network, gateway and
broadcast IPs.
Today I did some unsucessful tests with osmo-ggsn with a pool "ip prefix
dynamic 176.16.222.0/24", and thus IP 176.16.222.0 was being assigned to
the MS. De-capsulated DNS packets were received in the tun interface,
but the Linux system in there was unable to correctly forward the
packets to the gateway interface connected to the Internet. However,
adding a second MS which got 176.16.222.1 had its packets forwarded
correctly.
However, previous implementation relies on flag IPPOOL_NOGATEWAY flag to
blindly blacklist first IP after the network ip (ie, .0 and .1 are
removed), which limits the IP reserved for the tun device to be .1. If a
different IP in the range is assigned, it may cause issues. As a result,
a blacklist is introduced in this commit to dynamically fetch the tun IP
address and exlucde it from the pool of available IPs.
Change-Id: I8e91f7280d60490c858a769dd578c1c8e54e9243
http://cgit.osmocom.org/osmo-ggsn/commit/?id=a037e5908a84e8f438f8faef662f6b…
commit a037e5908a84e8f438f8faef662f6bfcec305b16
Author: Pau Espin Pedrol <pespin(a)sysmocom.de>
Date: Mon Oct 16 14:41:37 2017 +0200
tun: Convert tun_ipv6_linklocal_get to be more generic
Add support for IPv4 and IPv6 global IPs. Also return the prefix length
of the IP address by using a in46_prefix.
Change-Id: I277af191dc611b6bbcb83479f4ae338083740322
http://cgit.osmocom.org/osmo-ggsn/commit/?id=2e7b9ff891a0d4c84a4be3fffbac1b…
commit 2e7b9ff891a0d4c84a4be3fffbac1b9502fe267c
Author: Pau Espin Pedrol <pespin(a)sysmocom.de>
Date: Mon Oct 16 14:27:32 2017 +0200
lib/in46a: Introduce in46a_netmasklen API
Change-Id: I06e3e038afd8f7afaec2a3fa67b1616500c8db80
http://cgit.osmocom.org/osmo-ggsn/commit/?id=361cb9e910e77f657ad39e0be4684b…
commit 361cb9e910e77f657ad39e0be4684b8028711a0c
Author: Pau Espin Pedrol <pespin(a)sysmocom.de>
Date: Fri Oct 13 11:56:16 2017 +0200
lib/ippool: Fix listsize calculated 1 elem too small
Take the chance this commit is changing test output to also remove use
of IPPOOL_NOGATEWAY which is going to be removed soon, and instead test
IPPOOL_NOBROADCAST.
Change-Id: I95c24bc690490155bec9e3933d678e4668d7745f
-----------------------------------------------------------------------
Summary of changes:
ggsn/ggsn.c | 58 +++++++++-
lib/in46_addr.c | 58 ++++++++++
lib/in46_addr.h | 1 +
lib/ippool.c | 38 ++++---
lib/ippool.h | 4 +-
lib/tun.c | 65 ++++++++---
lib/tun.h | 13 ++-
tests/lib/in46a_test.c | 59 ++++++++++
tests/lib/in46a_test.ok | 2 +
tests/lib/ippool_test.c | 45 +++++---
tests/lib/ippool_test.err | 2 +
tests/lib/ippool_test.ok | 269 +++++++++++++++++++++++++++++++++++++++++++++-
12 files changed, 562 insertions(+), 52 deletions(-)
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