This is based on a previous patch by Roberto Santalla Fernández.
A new config is introduced into the network config file under IPv4
called SendHostname. If this is set to true then we add the hostname
into all DHCP requests. The default is false.
Don't require a gateway address from the settings file or from the DHCP
server when doing netconfig. Failing when the gateway address was
missing was breaking P2P but also small local networks.
It is possible that the address set command succeeds just after a
netconfig object has been destroyed.
==6485== Invalid read of size 8
==6485== at 0x458A6D: netconfig_ipv4_routes_install (netconfig.c:629)
==6485== by 0x458D1C: netconfig_ipv4_ifaddr_add_cmd_cb (netconfig.c:689)
==6485== by 0x4A5E7B: process_message (netlink.c:181)
==6485== by 0x4A626A: can_read_data (netlink.c:289)
==6485== by 0x4A3E19: io_callback (io.c:120)
==6485== by 0x4A27B5: l_main_iterate (main.c:478)
==6485== by 0x4A28F6: l_main_run (main.c:525)
==6485== by 0x4A2C0E: l_main_run_with_signal (main.c:647)
==6485== by 0x404D27: main (main.c:542)
==6485== Address 0x4a47290 is 32 bytes inside a block of size 104 free'd
==6485== at 0x48399CB: free (vg_replace_malloc.c:538)
==6485== by 0x49998B: l_free (util.c:136)
==6485== by 0x457699: netconfig_free (netconfig.c:130)
==6485== by 0x45A038: netconfig_destroy (netconfig.c:1163)
==6485== by 0x41FD16: station_free (station.c:3613)
==6485== by 0x42020E: station_destroy_interface (station.c:3710)
==6485== by 0x4B990E: interface_instance_free (dbus-service.c:510)
==6485== by 0x4BC193: _dbus_object_tree_remove_interface (dbus-service.c:1694)
==6485== by 0x4BA22A: _dbus_object_tree_object_destroy (dbus-service.c:795)
==6485== by 0x4B078D: l_dbus_unregister_object (dbus.c:1537)
==6485== by 0x417ACB: device_netdev_notify (device.c:361)
==6485== by 0x4062B6: netdev_free (netdev.c:808)
==6485== Block was alloc'd at
==6485== at 0x483879F: malloc (vg_replace_malloc.c:307)
==6485== by 0x499857: l_malloc (util.c:62)
==6485== by 0x459DC0: netconfig_new (netconfig.c:1115)
==6485== by 0x41FC29: station_create (station.c:3592)
==6485== by 0x4207B3: station_netdev_watch (station.c:3864)
==6485== by 0x411A17: netdev_initial_up_cb (netdev.c:5588)
==6485== by 0x4A5E7B: process_message (netlink.c:181)
==6485== by 0x4A626A: can_read_data (netlink.c:289)
==6485== by 0x4A3E19: io_callback (io.c:120)
==6485== by 0x4A27B5: l_main_iterate (main.c:478)
==6485== by 0x4A28F6: l_main_run (main.c:525)
==6485== by 0x4A2C0E: l_main_run_with_signal (main.c:647)
==6485==
==209== by 0x43E48A: netconfig_ipv4_select_and_install (netconfig.c:887)
==209== by 0x43E48A: netconfig_configure (netconfig.c:1025)
==209== by 0x41743C: station_connect_cb (station.c:2556)
==209== by 0x408E0D: netdev_connect_ok (netdev.c:1311)
==209== by 0x47549E: process_unicast (genl.c:994)
==209== by 0x47549E: received_data (genl.c:1102)
==209== by 0x4720EB: io_callback (io.c:120)
==209== by 0x47130C: l_main_iterate (main.c:478)
==209== by 0x4713DB: l_main_run (main.c:525)
==209== by 0x4713DB: l_main_run (main.c:507)
==209== by 0x4715EB: l_main_run_with_signal (main.c:647)
==209== by 0x403EE1: main (main.c:550)
It is possible for the RTNL command callback to come after
netconfig_reset or netconfig_destroy has been called. Make sure that
any outstanding commands that might access the netconfig object are
canceled.
src/netconfig.c:netconfig_ipv4_dhcp_event_handler() DHCPv4 event 0
src/netconfig.c:netconfig_ifaddr_added() wlan0: ifaddr 192.168.1.55/24 broadcast 192.168.1.255
^CTerminate
src/netdev.c:netdev_free() Freeing netdev wlan0[15]
src/device.c:device_free()
src/station.c:station_free()
src/netconfig.c:netconfig_destroy()
src/netconfig.c:netconfig_reset()
src/netconfig.c:netconfig_reset_v4() 16
src/netconfig.c:netconfig_reset_v4() Stopping client
Removing scan context for wdev c
src/scan.c:scan_context_free() sc: 0x4a3cc10
==12792== Invalid read of size 8
==12792== at 0x43BF5A: netconfig_route_add_cmd_cb (netconfig.c:600)
==12792== by 0x4727FA: process_message (netlink.c:181)
==12792== by 0x4727FA: can_read_data (netlink.c:289)
==12792== by 0x470F4B: io_callback (io.c:120)
==12792== by 0x47016C: l_main_iterate (main.c:478)
==12792== by 0x47023B: l_main_run (main.c:525)
==12792== by 0x47023B: l_main_run (main.c:507)
==12792== by 0x47044B: l_main_run_with_signal (main.c:647)
==12792== by 0x403EDB: main (main.c:490)
When using iwd.conf:[General].EnableNetworkConfiguration=true, it is not
possible to configure systemd.network:[Network].MulticastDNS= as
systemd-networkd considers the link to be unmanaged. This patch allows
iwd to configure that setting on systemd-resolved directly.
When the IP is configured to be static we can now use ACD in
order to check that the IP is available and not already in
use. If a conflict is found netconfig will be reset and no IP
will be set on the interface. The ACD client is left with
the default 'defend once' policy, and probes are not turned
off. This will increase connection time, but for static IP's
it is the best approach.
==5279== 104 bytes in 2 blocks are definitely lost in loss record 1 of 1
==5279== at 0x4C2F0CF: malloc (vg_replace_malloc.c:299)
==5279== by 0x4655CD: l_malloc (util.c:61)
==5279== by 0x47116B: l_rtnl_address_new (rtnl.c:136)
==5279== by 0x438F4B: netconfig_get_dhcp4_address (netconfig.c:429)
==5279== by 0x438F4B: netconfig_ipv4_dhcp_event_handler
(netconfig.c:735)
==5279== by 0x491C77: dhcp_client_event_notify (dhcp.c:332)
==5279== by 0x491C77: dhcp_client_rx_message (dhcp.c:810)
==5279== by 0x492A88: _dhcp_default_transport_read_handler
(dhcp-transport.c:151)
==5279== by 0x46BECB: io_callback (io.c:118)
==5279== by 0x46B10C: l_main_iterate (main.c:477)
==5279== by 0x46B1DB: l_main_run (main.c:524)
==5279== by 0x46B3EA: l_main_run_with_signal (main.c:646)
==5279== by 0x403ECE: main (main.c:490)
Tracking of addresses that weren't set by us seemed a bit questionable.
Take this out for now. If this is ever needed, then a queue with
l_rtnl_address objects should be used.
Introduce a new v4_address member which will hold the currently
configured IPV4 address (static or obtained via DHCP). Use the new
l_rtnl_address class for this.
As a side-effect, lease expiration will now properly remove the
configured address.
This patch converts the code to use the new l_rtnl_address class. The
settings parsing code will now return an l_rtnl_address object which
can be installed directly.
Also, address removal path for static addresses has been removed, since
netconfig_reset() sets disable_ipv6 setting to '1', which will remove
all IPV6 addresses for the interface.
This patch converts the code to use the new l_rtnl_route class instead
of using l_rtnl_route6* utilities. The settings parsing code will now
return an l_rtnl_route object which can be installed directly.
Also, the route removal path has been removed since netconfig_reset()
sets disable_ipv6 setting to '1' which will remove all IPV6 routes and
addresses for the interface.
This also changes the resolve API a little bit to act as a 'set' API
instead of an incremental 'add' API. This is actually easier to manage
in the resolve module since both systemd and resolvconf want changes
wholesale and not incrementally.
For now the RA client is ran automatically when DHCPv6 client starts.
RA takes care of installing / deleting prefix routes and installing the
default gateway. If Router Advertisements indicate support DHCPv6, then
DHCPv6 transactions are kicked off and the address is set / removed
automatically.
Stateless configuration is not yet supported.
Resolve module does not currently track any state that has been set on
a per ifindex basis. This was okay while the set of information we
supported was quite small. However, with dhcpv6 support being prepared,
a more flexible framework is needed.
Change the resolve API to allocate and return an instance for a given
ifindex that has the ability to track information that was provided.
This uses l_dhcp_lease_get_server_id to get the IP of the server that
offered us our current lease. l_dhcp_lease_get_server_id returns the
vaue of the L_DHCP_OPTION_SERVER_IDENTIFIER option, which is the address
that any unicast DHCP frames are supposed to be sent to so it seems to
be the best way to get the P2P group owner's IP address as a P2P-client.
The IPv6 default route needs to be explicitly revoked. Unlike in IPv4,
there is no SRC address associated with the route and it will not be
removed on address removal.
