gateway: merge the olsr_get_ipv{4,6}_inet_gateway functions

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

remove most '#if 0' blocks

Leave mpr related blocks alone.

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

Merge remote-tracking branch 'origin/mDNS-plugin-GSoC-2012'

fixed misspelling: usefull -> useful

fix misspelling: 'adress' --> 'address'

    - an 'address' represents a location, i.e. MAC address

    - 'adress' is a verb meaning "to speak to"

olsrd-adhoc-setup: configure NetworkManager to be nice when adhoc is manually setup

olsrd-adhoc-setup: use static BSSID by default to assoc. with the right mesh

Fix optional compilation of the nl80211 lq plugin

Signed-off-by: Frank de Brabander <brabander@fox-it.com>

Incorporate fix by Ferry Hubert for float to double promotion

Signed-off-by: Frank de Brabander <brabander@fox-it.com>

Merge branch with new lq plugin for NL80211 support

Signed-off-by: Frank de Brabander <brabander@fox-it.com>

gateway: rename 2 variables

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

olsrd_plugin: remove #if 1

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

update comments on all ifdefs

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

ifdef: fix some include ifdefs

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

use the Microsoft standard '_WIN32' macro instead of the self-defined 'WIN32'

http://msdn.microsoft.com/en-us/library/ff540443.aspx

use the POSIX standard '__linux__' macro instead of 'linux'

"Use __linux__ for this purpose, not linux. Although the latter is defined, it is not POSIX compliant."
http://www.faqs.org/docs/Linux-HOWTO/GCC-HOWTO.html#INDEX.25

http_info: pud satellites in use are now green, not in use are red

To improve readability

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

pud: include nmealib v1.0.3

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

pud: force pending buffer out if not enough space for our message

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

Pud: Do not use the variable name strlen.

gateway: merge 2 code blocks

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: prevent 2 NULL dereferences

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: the gateway to set must either be an IPv4 or IPv6 gateway or both

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: the gateway to set must be in the gateway tree

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: merge 2 code blocks

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: push an if condition into its nested if's

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: simplify a condition

Because of the preceding
  if (ipv4) {
    current_ipv4_gw = NULL;
  }
  if (ipv6) {
    current_ipv6_gw = NULL;
  }

The condition(s)
   if (ipvX && entry != current_ipvX_gw
Are effectively
   if (ipvX && entry != NULL
Also, the test
   entry != NULL
was already performed by the enclosing if statement

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: rename a function

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: inline olsr_trigger_inetgw_selection function

To simplify and reduce the number of functions

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: inline olsr_find_gateway_entry function

To simplify and reduce the number of functions

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: add comments to struct olsr_gw_handler function prototypes

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: rename hooks

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: add init and cleanup hooks for gateway plugins

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: clear gw_handler during cleanup

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: add asserts to validate gw_handler

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: remove 'unused' v{4,6}gw_choosen_external

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: formatting

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: reorder functions to reflect order in header

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

gateway: clarify header with extra comments and ordering

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Reviewed-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>

sgwdynspeed: make sure to update the smart gw netmask

when the uplink and/or downlink speeds change, because the smart gw
netmask carries the uplink and downlink speeds that are advertised
to other nodes

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: move refresh_smartgw_netmask to exported functions section

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: export refresh_smartgw_netmask function

we need it when we adjust the uplink and/or downlink speeds

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

Merge branch 'master' into stable

Revert "mDNS: init ListOfFilteredHosts in the proper place and not at every received packet"

This reverts commit 0b0ddb77c04ca8f490ede4438acf7073f5a47be1.

Conflicts:

lib/mdns/src/mdns.c

It caused a segfault

mDNS: Fixed typo in README

mDNS: better debug support for filtered hosts feature

mDNS: trivial, removed TODO from code for something that was implemented

mDNS: init ListOfFilteredHosts in the proper place and not at every received packet

mDNS: Change version of mdns plugin to 1.0.1 after GSoC 2012 work by Alessandro Gnagni

mDNS: trivial debug print fix and code readibility improvement

mDNS: BUGFIX, mDNS plugin, hello message of router election not sent if debug = 0

mDNS: Update checksum field of the IPv4 Header after altering TTL

mDNS: Reworked logic of router Election. The election is now handled on interface basis, because the router could have one interface where it needs to be master and another interface where it needs to be disabled. There was a logical bug in the earlier implementation.

mDNS: Updated README file for mDNS plugin

mDNS: Implemented Host Filtering for ipv4 and ipv6, writing in the config file which hosts to ignore. The mDNS packets from the ignored hosts will be ignored and not propagated in the network

mDNS: Fix most of the warnings from the compiler

mDNS: Implemented router election mechansim to have only 1 active mDNS OLSR router in 1 LAN

Implemented IPv4 and IPv6 socket that should
capture the router election signalling packets (hellos)

Hellos are sent out with a timer

A second time triggers the router to decide if he is master

mDNS: review of Alessandro Gnagni patch, inserted a config value to enable or disable TTL check and change, default is enabled.

mDNS: Upgrading the container_of.h that was backported from src/common in master

A newer version is present in master and this commit makes the upgrade

mDNS: Skeleton code for new host filter feature in mDNS plugin

Skeleton code of the new feature of mDNS to filter
out some hosts to prevent forwarding of services
we dont want to propagate in the mesh

In the configuration file we can write which IP address we want to discard
and do not propagate in the mDNS flooding.

For example if I have Apple AirPort at home, do not giving out any service
I dont want those mDNS packets travelling in the all mesh network.

mDNS: Fixing loops for mDNS packets when mDNS plugin is misconfigured

If two mDNS plug-in enabled OLSR routers are attached to the same HNA network, then mDNS packets will loop back and forth between the two, also flooding the whole OLSR network. For the moment the temporary solution to this problem was to enable the plug-in on one router at a time on the same HNA. A real implemented here is  the following:

    usually mDNS packets have a TTL != 1, so:
    capture only mDNS packets with TTL != 1
    when decapsulating mDNS packets, set TTL = 1
    where TTL is the IP Time-to-live field or the IPv6 HopLimit field

 * Modified code to forward mdns packet from HNA into OLSRd network changing TTL/Hlim to 1
 * Now the mDns plugin discard all packet from HNA that have TTL/Hlim equals to 1

PUD: nmealib: use fully qualified path to ldconfig

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

linux: rework usage of defines w.r.t. IPv6 tunnel

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

linux: name is required to be non-null in olsr_os_cleanup_iptunnel

Mainly to get rid of TUNNEL_ENDPOINT_IF and TUNNEL_ENDPOINT_IF6
usage here.

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

linux: consolidate os_ip4_tunnel and os_ip6_tunnel

the code was almost the same, so merge the functions

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

pud: add SmartGatewayWeightExitLink and SmartGatewayWeightEtx

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: add exit link weighing

Only performed when the weighing factors are set

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: calculate with uint64_t i.s.o. olsr_linkcost

The next change needs larger numbers

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

cfg: add SmartGateway weighing parameters

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

pud: cfg: mark BMF interface as non-persistent

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

bmf: allow marking the BMF network interface as non-persistent

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

tc_set.c duplicate_set.c: small bug-fix - case ipv6 - ipwidth 30-->39

gateway: rename a variable

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: make smart gateway threshold parameter work properly.

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: add helper function gw_default_calc_threshold

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: improve gw_default_update_handler a bit

protect against a null pointer deref

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: update logic of gw_default_delete_handler

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

jsoninfo: fix crash in /interfaces when olsrd is using a net interface that is not up

pud: ignore zero bandwidth/uni-directional link gateways

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: fix deserialisation of 0 in deserialize_gw_speed

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: ignore zero bandwidth and uni-directional links

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: ignore unreachable gateways

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: reset bandwidth to zero when no link speed is advertised

in olsr_update_gateway_entry

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: minor simplification to olsr_set_inet_gateway

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: minor simplification to olsr_delete_gateway_entry

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: remove an unused variable in olsr_update_gateway_entry

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: minor simplification to olsr_trigger_gatewayloss_check

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: add some asserts on gw_handler

gateway: initialise all variables in olsr_init_gateways

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: add and update lots of comments

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: introduce OLSR_IP_ADDR_2_HNA_PTR helper

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: simplify and inline olsr_find_gateway_entry

node2gateway already takes care of NULL

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: simplify deserialize_gw_speed

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: remove some unused code in refresh_smartgw_netmask

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: reorder functions

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: add some comments

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: make olsr_find_gateway_entry static

it is only used in gateway.c

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: make olsr_trigger_inetgw_selection

it is only used in gateway.c

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: make refresh_smartgw_netmask static

it is only used with gateway.c

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>

gateway: let init and cleanup functions take the name as parameter

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>