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Author SHA1 Message Date
Siddharth Chandrasekara afe42aef39 dhcp4: make IPServiceType configurable 
IPServiceType set to CS6 (network control) causes problems on some old
network setups that continue to interpret the field as IP TOS.

Make DHCP work on such networks by allowing this field to be set to
CS4 (Realtime) instead, as this maps to IPTOS_LOWDELAY.

Signed-off-by: Siddharth Chandrasekaran <csiddharth@vmware.com>
 2019-09-26 11:39:46 +09:00
Susant Sahani 299d578f7f network: DHCP server Add support to transmit SIP server 
1. DHCP server trasmit
2. Client parses and saves in leases
Implements http://www.rfc-editor.org/rfc/rfc3361.txt

```
Frame 134: 348 bytes on wire (2784 bits), 348 bytes captured (2784 bits) on interface 0
Ethernet II, Src: 42:65:85:d6:4e:32 (42:65:85:d6:4e:32), Dst: 1e:04:f8:b8:2f:d4 (1e:04:f8:b8:2f:d4)
Internet Protocol Version 4, Src: 192.168.5.1, Dst: 192.168.5.11
User Datagram Protocol, Src Port: 67, Dst Port: 68
Dynamic Host Configuration Protocol (ACK)
    Message type: Boot Reply (2)
    Hardware type: Ethernet (0x01)
    Hardware address length: 6
    Hops: 0
    Transaction ID: 0x7cc87cb4
    Seconds elapsed: 0
    Bootp flags: 0x0000 (Unicast)
    Client IP address: 0.0.0.0
    Your (client) IP address: 192.168.5.11
    Next server IP address: 0.0.0.0
    Relay agent IP address: 0.0.0.0
    Client MAC address: 1e:04:f8:b8:2f:d4 (1e:04:f8:b8:2f:d4)
    Client hardware address padding: 00000000000000000000
    Server host name not given
    Boot file name not given
    Magic cookie: DHCP
    Option: (53) DHCP Message Type (ACK)
        Length: 1
        DHCP: ACK (5)
    Option: (51) IP Address Lease Time
        Length: 4
        IP Address Lease Time: (3600s) 1 hour
    Option: (1) Subnet Mask (255.255.255.0)
        Length: 4
        Subnet Mask: 255.255.255.0
    Option: (3) Router
        Length: 4
        Router: 192.168.5.1
    Option: (6) Domain Name Server
        Length: 4
        Domain Name Server: 192.168.5.1
    Option: (42) Network Time Protocol Servers
        Length: 4
        Network Time Protocol Server: 192.168.1.1
    Option: (120) SIP Servers <=====here
        Length: 9
        SIP Server Encoding: IPv4 Address (1)
        SIP Server Address: 192.168.1.1
        SIP Server Address: 192.168.5.2
    Option: (101) TCode
        Length: 13
        TZ TCode: Europe/Berlin
    Option: (54) DHCP Server Identifier (192.168.5.1)
        Length: 4
        DHCP Server Identifier: 192.168.5.1
    Option: (255) End
        Option End: 255
```

```
cat /run/systemd/netif/state                                                                                                   ✔  ⚡  3148  16:40:51
OPER_STATE=routable
CARRIER_STATE=carrier
ADDRESS_STATE=routable
DNS=192.168.94.2 192.168.5.1
NTP=192.168.5.1
SIP=192.168.1.1 192.168.5.2

```

aa
 2019-09-20 21:22:23 +09:00
Susant Sahani 5bc945bec4 network dhcp4: Add support send request options in a generic manner 2019-09-20 21:05:48 +09:00
Susant Sahani 203d4df573 network: Add support to advertie ipv6 route 
Implements https://tools.ietf.org/html/rfc4191

cat veth99.network
```
[Match]
Name=veth99

[Network]
DHCP=no
IPv6PrefixDelegation=yes
Address=2001:db8:0:1::1/64

[IPv6Prefix]
Prefix=2001:db8:0:1::4/64

[IPv6RoutePrefix]
Route=2001:db0:fff::/48

```
Wireshark

```
Frame 481: 142 bytes on wire (1136 bits), 142 bytes captured (1136 bits) on interface 0
Ethernet II, Src: 1e:04:f8:b8:2f:d4 (1e:04:f8:b8:2f:d4), Dst: IPv6mcast_01 (33:33:00:00:00:01)
Internet Protocol Version 6, Src: fe80::1c04:f8ff:feb8:2fd4, Dst: ff02::1
Internet Control Message Protocol v6
    Type: Router Advertisement (134)
    Code: 0
    Checksum: 0xec77 [correct]
    [Checksum Status: Good]
    Cur hop limit: 0
    Flags: 0x00, Prf (Default Router Preference): Medium
    Router lifetime (s): 0
    Reachable time (ms): 0
    Retrans timer (ms): 0
    ICMPv6 Option (Source link-layer address : 1e:04:f8:b8:2f:d4)
        Type: Source link-layer address (1)
        Length: 1 (8 bytes)
        Link-layer address: 1e:04:f8:b8:2f:d4 (1e:04:f8:b8:2f:d4)
    ICMPv6 Option (MTU : 1500)
        Type: MTU (5)
        Length: 1 (8 bytes)
        Reserved
        MTU: 1500
    ICMPv6 Option (Prefix information : 2001:db8:0:1::4/64)
        Type: Prefix information (3)
        Length: 4 (32 bytes)
        Prefix Length: 64
        Flag: 0xc0, On-link flag(L), Autonomous address-configuration flag(A)
        Valid Lifetime: 2592000
        Preferred Lifetime: 604800
        Reserved
        Prefix: 2001:db8:0:1::4
    ICMPv6 Option (Route Information : Medium 2001:db0:fff::/48)
        Type: Route Information (24)
        Length: 3 (24 bytes)
        Prefix Length: 48
        Flag: 0x00, Route Preference: Medium
            ...0 0... = Route Preference: Medium (0)
            000. .000 = Reserved: 0
        Route Lifetime: 604800
        Prefix: 2001:db0:fff::
```
 2019-09-17 12:09:59 +02:00
Yu Watanabe adfeee49c5 network: enable ipv6 when the network has static ipv6 configurations 2019-08-27 23:53:46 +09:00
Yu Watanabe 2d79289525 network: rename AddressFamilyBoolean -> AddressFamily 
We usually do not call an extended boolean as XxxBoolean.
 2019-08-16 22:02:17 +09:00
Yu Watanabe a24e12f020 network: add DHCPv4.RoutesToDNS= setting 2019-07-19 01:49:39 +09:00
Lennart Poettering 7e82b4059b
Merge pull request #13006 from yuwata/network-split-dhcp-12917 
networkd: DHCPv6 - separate DHCPv6 options from DHCPv4 options
 2019-07-11 10:28:03 +02:00
1848 98d20a17a9 Added support for xfrm interfaces 2019-07-10 23:02:19 +09:00
Susant Sahani caa8ca4286 networkd: DHCPv6 - separate DHCPv6 options from DHCPv4 options 
Closes https://github.com/systemd/systemd/issues/12917
 2019-07-10 16:59:29 +09:00
Zbigniew Jędrzejewski-Szmek 8fabb625ac
Merge pull request #12912 from yuwata/network-move-functions 
network: move functions
 2019-07-02 09:46:38 +02:00
Yu Watanabe 44005bfb4e network,udev: add Property= setting in [Match] section 
Closes #5665.
 2019-07-01 01:24:42 +09:00
Yu Watanabe ceac2c2b62 network: move prototypes related to network Network bus objects to networkd-network-bus.h 2019-06-30 05:12:51 +09:00
Yu Watanabe 8fcf1d6180 network: move DHCP server related functions to networkd-dhcp-server.c 2019-06-30 04:46:27 +09:00
Yu Watanabe ca5ad760a5 network: move conf parsers and function prototypes 2019-06-30 04:45:56 +09:00
Yu Watanabe 95355a281c network: add KeepConfiguration=dhcp-on-stop 
The option prevents to drop lease address on stop.
By setting this, we can safely restart networkd.
 2019-06-06 22:50:29 +09:00
Susant Sahani 7da377ef16 networkd: add support to keep configuration 2019-06-06 22:50:29 +09:00
Susant Sahani e520ce6440 networkd: Ability to selectively ignore IPv6 prefixes supplied via router advertisement 
Closes https://github.com/systemd/systemd/issues/10647
 2019-05-19 22:23:06 +09:00
Yu Watanabe a32a00831c
Merge pull request #12574 from yuwata/network-mtu-issue-12552 
network: do not always bump MTU with additional 4bytes
 2019-05-16 08:25:48 +02:00
Yu Watanabe 933c70a0a4 network: honor MTUBytes= setting 
Closes #12552.
 2019-05-16 11:47:41 +09:00
Yu Watanabe 5d5003ab35 network: add DefaultRouteOnDevice= setting in [Network] section 
When enabled, then default route bound to the interface will be created.
This is useful when adding routes on point-to-point interfaces.

Closes #788.
 2019-05-15 12:44:30 +09:00
Susant Sahani 1501b429a9 networkd: DHCP client add support to send RELEASE packet 
closes #10820
 2019-05-14 09:03:01 +02:00
Yu Watanabe 8e2cb51ce0 network: move MulticastRouter to netdev/bridge.[ch] 2019-05-11 06:24:04 +09:00
Yu Watanabe 7f8539504c network: move sd_lldp related functions to networkd-lldp-rx.c 2019-05-11 06:14:39 +09:00
Yu Watanabe 5af7bc6f4c
Merge pull request #12480 from ssahani/proxy-arp 
network: bridge add support to configure proxy ARP/WIFI
 2019-05-10 15:30:41 +02:00
Susant Sahani 727b573418 networkd: Add support for blacklisting servers 
closes #6260

fuzzer: Add DHCP support for blacklisting servers
 2019-05-10 15:29:55 +02:00
Susant Sahani 0fadb2a46f network: add support to configure proxy ARP/WIFI 2019-05-09 15:03:04 +09:00
Susant Sahani 1087623bac networkd: Add support to configure proxy ARP and proxy ARP Wifi 2019-05-09 01:44:26 +02:00
Zbigniew Jędrzejewski-Szmek 717e8eda77
Merge pull request #12475 from yuwata/network-fix-12452 
network: add network_ref/_unref() and make Link object take a reference of Network object
 2019-05-07 20:03:22 +02:00
Susant Sahani 715cedfbf0 networkd: Allow DHCP4 client to set the number to attempt to reconfigure. 
Otherwise current value is 6 and after 6 it will give up.
 2019-05-07 17:12:04 +02:00
Yu Watanabe 715d398e61 network: drop list fields in Network object 2019-05-07 16:55:19 +02:00
Yu Watanabe 35ac3b7664 network: introduce reference counter for Network object 2019-05-07 16:55:19 +02:00
Yu Watanabe 1beabe08d6 network,udev: explicitly declare 'conditions' is a list 2019-03-24 00:35:39 +09:00
Yu Watanabe c4f58deab5 network,udev: split static condition tests from net_match_config() 2019-03-21 23:37:39 +09:00
Tobias Jungel 7f15b71460 networkd: Add bridge port capabilities 
This PR adds the configuration switches for multicast flooding, neighbor
suppression and learning of a bridge port.
 2019-03-13 16:27:22 +01:00
Lennart Poettering 96c45cc697
Merge pull request #11861 from yuwata/network-verify-2 
network: config parser updates and wireguard refactoring
 2019-03-13 10:15:27 +01:00
Yu Watanabe 4ac77d63e9 network: make RequiredForOnline= also take operational state 
This will be used by systemd-networkd-wait-online.
 2019-03-13 14:29:03 +09:00
Yu Watanabe 96db641250 test: make network_verify() public and use it in test-networkd-conf 2019-03-13 11:59:18 +09:00
Yu Watanabe 48315d3dca network: move NetworkConfigSection and related functions to networkd-util.[ch] 2019-03-13 11:59:18 +09:00
Clemens Gruber c423be28a0 network: introduce TripleSampling= option in CAN section 
When enabled, three samples are used to determine the value of a
received bit by majority rule.

This patch adds support for the TripleSampling= option in the [CAN]
section of .network files.
 2019-03-11 17:15:47 +01:00
Yu Watanabe 40288ecea1 network: bump mtu if stacked vlan or macvlan requests larger size 
Closes #5972.
 2019-02-27 10:04:56 +09:00
Yu Watanabe cebe12571d network: make resolving NetDev names delayed and moved to network_verify() 
And before resolving NetDev names, check conditions in .network,
and if they do not match the system environment, drop the network
unit earlier.

Fixes #4211.
 2019-02-26 10:06:23 +09:00
Zbigniew Jędrzejewski-Szmek 5e2a51d588 networkd: use OrderedSets instead of strvs to store lists of domains 
We were already using OrderedSets in the manager object, but strvs in the
configuration parsing code. Using sets gives us better scaling when many
domains are used.

In oss-fuzz #13059 the attached reproducer takes approximately 30.5 s to be
parsed. Converting to sets makes this go down to 10s. This is not _vastly_
faster, but using sets seems like a nicer approach anyway. In particular, we
avoid the quadratic de-unification operation after each addition.
 2019-02-21 12:04:27 +01:00
Lennart Poettering 702451b038
Merge pull request #11698 from yuwata/fix-network-route-table 
network: honor specified route table
 2019-02-18 12:58:32 +01:00
Lennart Poettering 84e4b0b893
Merge pull request #11716 from ssahani/drop-autoconf-address 
networkd: ipv6ra allow to ignore addresses
 2019-02-15 12:17:46 +01:00
Yu Watanabe d5fa333960 network: introduce Network::ipv6_accept_ra_route_table_set flag 
It will be used in later commit.
 2019-02-15 10:58:22 +09:00
Susant Sahani 062c2eea3a networkd: ipv6ra allow to ignore addresses 
Allows to ignore prefixes.

```
UseAutonomousPrefix=
UseOnLinkPrefix=
```

closes #9582
 2019-02-14 21:05:17 +05:30
Susant Sahani 93b4dab57e networkd: Allow to retain configs even if carrier is lost 
When there is bad link in the network the carrier goes up/down.
This makes networkd stops all the clients and drop config.
But if the remote router/dhcpserver running a prevention
of DHCP Starvation attack or DHCP Flood attack it does not allow
networkd to take a DHCP lease resulting failure in configuration.
This patch allows to keep the client running and keep the conf
also for this scenario.

Closes #9111
 2019-02-06 13:35:11 +01:00
Lennart Poettering 7ece6f5897 networkd: permit DNS "DefaultRoute" configuration in .network files 2018-12-21 12:10:07 +01:00
Thomas Haller 8217ed5ec3 network: fix handling of uninitialized and zero IAID setting 
An earlier commit 0e408b82b (dhcp6-client: handle IAID with value zero)
introduced a flag to sd_dhcp6_client to distinguish between an unset
IAID and a value set to zero.

However, that was not sufficient and broke leaving the setting
uninitialized in networkd configuration. The configuration parsing
also must distinguish between the default, unset value and an
explict zero configuration.

Fixes: 0e408b82b8
 2018-12-10 14:25:28 +01:00