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Commit Graph

691 Commits

Author SHA1 Message Date
Susant Sahani
88c0642358 network: static route - Allow to configure per route hop liimt 2023-08-18 14:46:37 +05:30
Susant Sahani
1412d4a4fe network: Route - allow to set TCP RTO 2023-08-17 23:47:13 +05:30
Susant Sahani
f141b2c053 network: ndisc - Honour CurHopLimit
RFC4861 Neighbor Discovery – Sections 4.2 and 6.3.4

From section 4.2. Router Advertisement Message Format:

Cur Hop Limit        8-bit unsigned integer.  The default value that
                     should be placed in the Hop Count field of the IP
                     header for outgoing IP packets.  A value of zero
                     means unspecified (by this router).
2023-07-30 14:37:21 +01:00
Yu Watanabe
d8f19e03c0 network,dhcp: drop support of ClientIdentifier=duid-only
The setting has not been never worked, not tested, and should not been
used. As the option is RFC incompliant. Let's drop it.

Closes #25562.
2023-07-29 18:51:09 +09:00
Susant Sahani
9c72e8f8bc networkd: allow setting rp_filter for an interface 2023-07-28 14:38:27 +05:30
Susant Sahani
cb35a0d43e network: DHCP4 allow to set InitialCongestionWindow and InitialAdvertisedReceiveWindow 2023-07-15 19:24:27 +05:30
Yu Watanabe
86c2a76e09
Merge pull request #28132 from rpigott/dhcp-captive-portal
Implement RFC8910: captive portal dhcp options
2023-07-03 14:51:56 +09:00
Ronan Pigott
d74c4ce103 network: Introduce UseCaptivePortal IPv6RA option
Accepts a boolean. When enabled retains captive portal configuration
advertised by the router.
2023-07-02 01:13:43 -07:00
Ronan Pigott
a75feb554b network: Introduce UseCaptivePortal DHCPv6 option
Acepts a boolean. When enabled requests and retains captive portal
configuration from the DHCPv6 server.
2023-07-02 01:13:43 -07:00
Ronan Pigott
edb88a7201 network: Introduce UseCaptivePortal DHCPv4 option
Accepts a boolean. When enabled, UseCaptivePortal will request and
retain the captive portal configuration from the DHCP server.
2023-07-02 01:13:43 -07:00
Yu Watanabe
932ef6ecd4 network: add global setting for IPv6PrivacyExtensions=
Closes #28186.
2023-06-29 21:40:47 +09:00
Brad Fitzpatrick
cd18d98349 man: clarify RoutingPolicyRule.TypeOfService docs 2023-04-30 04:30:35 +09:00
chris
b895aa5ff5 send dhcpv6 release when stopping 2023-01-17 21:26:18 +09:00
Luca Boccassi
37df1221d5
Merge pull request #26071 from yuwata/network-dhcp-quick-ack
network: make TCP quick ACK mode for dynamic routes configurable
2023-01-16 19:41:03 +00:00
Łukasz Stelmach
87d1221174 man: clarify applicability of IPv6AcceptRA option
There is no reason to not accept RAs on bondX devices (devices that
aggregate other devices). It makes sense for aggregated devies though.
2023-01-16 10:30:15 +00:00
Yu Watanabe
f95fb19922 network: introduce QuickAck= for [DHCPv4] and [IPv6AcceptRA]
Closes #25906.
2023-01-16 14:40:22 +09:00
chris
ea57796854 optionally set socket priority on DHCPv4 raw socket 2023-01-12 13:26:47 +09:00
Zbigniew Jędrzejewski-Szmek
8b9f092112 man: fix issues reported by the manpage-l10n project
Fixes #25780.

> Man page: crypttab.5
> Issue 1:  Missing fullstop
> Issue 2:  I<cipher=>, I<hash=>, I<size=> → B<cipher=>, B<hash=>, B<size=>
>
> "Force LUKS mode\\&. When this mode is used, the following options are "
> "ignored since they are provided by the LUKS header on the device: "
> "I<cipher=>, I<hash=>, I<size=>"

Seems OK to me. The full stop is there and has been for at least a few years. And we use <option> for the markup, which is appropriate here.

> Man page: crypttab.5
> Issue 1:  Missing fullstop
> Issue 2:  I<cipher=>, I<hash=>, I<keyfile-offset=>, I<keyfile-size=>, I<size=> → B<cipher=>, B<hash=>, B<keyfile-offset=>, B<keyfile-size=>, B<size=>
>
> "Use TrueCrypt encryption mode\\&. When this mode is used, the following "
> "options are ignored since they are provided by the TrueCrypt header on the "
> "device or do not apply: I<cipher=>, I<hash=>, I<keyfile-offset=>, I<keyfile-"
> "size=>, I<size=>"

Same.

> Man page: journalctl.1
> Issue 1:  make be → may be

Fixed.

> Issue 2:  below\\&. → below:

Fixed.

> Man page: journalctl.1
> Issue:    Colon at the end?
>
> "The following commands are understood\\&. If none is specified the default "
> "is to display journal records\\&."
> msgstr ""
> "Die folgenden Befehle werden verstanden\\&. Falls keiner festgelegt ist, ist "
> "die Anzeige von Journal-Datensätzen die Vorgabe\\&."

This is a bit awkward, but I'm not sure how to fix it.

> Man page: kernel-install.8
> Issue:    methods a fallback → methods fallback

It was correct, but I added a comma to make the sense clearer.

> Man page: loader.conf.5
> Issue 1:  secure boot variables → Secure Boot variables
> Issue 2:  one → one for (multiple times)
>
> "Supported secure boot variables are one database for authorized images, one "
> "key exchange key (KEK) and one platform key (PK)\\&. For more information, "
> "refer to the \\m[blue]B<UEFI specification>\\m[]\\&\\s-2\\u[2]\\d\\s+2, "
> "under Secure Boot and Driver Signing\\&. Another resource that describe the "
> "interplay of the different variables is the \\m[blue]B<EDK2 "
> "documentation>\\m[]\\&\\s-2\\u[3]\\d\\s+2\\&."

"one of" would sound strange. "One this and one that" is OK.

> Man page: loader.conf.5
> Issue:    systemd-boot → B<systemd-boot>(7)

Fixed.

> Man page: logind.conf.5
> Issue:    systemd-logind → B<systemd-logind>(8)

We use <filename>systemd-logind</> on subsequent references… I think that's good enough.

> Man page: nss-myhostname.8
> Issue:    B<getent> → B<getent>(1)

Fixed.

> Man page: nss-resolve.8
> Issue:    B<systemd-resolved> → B<systemd-resolved>(8)

The first reference does this, subsequent are shorter.

> Man page: os-release.5
> Issue:    Portable Services → Portable Services Documentation?

Updated.

> Man page: pam_systemd_home.8
> Issue:    auth and account use "reason", while session and password do not?

Reworded.

> Man page: portablectl.1
> Issue:    In systemd-portabled.service(8): Portable Services Documentation

Updated.

> Man page: repart.d.5
> Issue:    The partition → the partition

Fixed.

> Man page: repart.d.5
> Issue:    B<systemd-repart> → B<systemd-repart>(8)

The first reference does this. I also change this one, because it's pretty far down in the text.

> Man page: systemd.1
> Issue:    kernel command line twice?
>
> "Takes a boolean argument\\&. If false disables importing credentials from "
> "the kernel command line, qemu_fw_cfg subsystem or the kernel command line\\&."

Apparently this was fixed already.

> Man page: systemd-boot.7
> Issue:    enrollement → enrollment

Fixed.

> Man page: systemd-cryptenroll.1
> Issue:    multiple cases: any specified → the specified

Reworded.

> Man page: systemd-cryptenroll.1
> Issue:    If this this → If this

Fixed tree-wide.

> Man page: systemd-cryptsetup-generator.8
> Issue:    and the initrd → and in the initrd

"Is honoured by the initrd" is OK, because we often speak about the initrd as a single unit. But in the same paragraph we also used "in the initrd", which makes the other use look sloppy. I changed it to "in the initrd" everywhere in that file.

> Man page: systemd.directives.7
> Issue:    Why are these two quoted (but not others)?
>
> "B<\\*(Aqh\\*(Aq>"
>
> B<\\*(Aqs\\*(Aq>"
>
> "B<\\*(Aqy\\*(Aq>"

This is autogenerated from files… We use slightly different markup in different files, and it's just too hard to make it consistent. We gave up on this.

> Man page: systemd.exec.5
> Issue 1:  B<at>(1p) → B<at>(1)
> Issue 2:  B<crontab>(1p) → B<crontab>(1)

Fixed.

> Man page: systemd.exec.5
> Issue:    B<select()> → B<select>(2)

Fixed.

> Man page: systemd.exec.5
> Issue:   qemu → B<qemu>(1)

The man page doesn't seem to be in any of the canonical places on the web.
I added a link to online docs.

> Man page: systemd.exec.5
> Issue:    variable → variables

Seems to be fixed already.

> Man page: systemd-integritysetup-generator.8
> Issue:    systemd-integritysetup-generator → B<systemd-integritysetup-generator>

I changed <filename> to <command>.

> Man page: systemd-integritysetup-generator.8
> Issue:    superfluous comma at the end

Already fixed.

> Man page: systemd-measure.1
> Issue:    (see B<--pcr-bank=>) below → (see B<--pcr-bank=> below)

Reworded.

> Man page: systemd-measure.1
> Issue:    =PATH> → =>I<PATH>

Fixed.

> Man page: systemd-measure.1.po
> Issue:    B<--bank=DIGEST> → B<--bank=>I<DIGEST>

Fixed.

> Man page: systemd.netdev.5
> Issue:    os the → on the

Appears to have been fixed already.

> Man page: systemd.netdev.5
> Issue:    Onboard → On-board (as in previous string)

Updated.

> Man page: systemd.network.5
> Issue:    B<systemd-networkd> -> B<systemd-networkd>(8)

First reference does this, subsequent do not.

> Man page: systemd.network.5
> Issue:    B<netlabelctl> → B<netlabelctl>(8)

First reference does this, subsequent do not.

> Man page: systemd.network.5
> Issue:    Missing verb (aquired? configured?) in the half sentence starting with "or by a "

I dropped the comma.

> Man page: systemd-nspawn.1
> Issue:    All host users outside of that range → All other host users

Reworded.

> # FIXME no effect → no effect\\&.
> #. type: Plain text
> #: archlinux debian-unstable fedora-rawhide mageia-cauldron opensuse-tumbleweed
> msgid ""
> "Whichever ID mapping option is used, the same mapping will be used for users "
> "and groups IDs\\&. If B<rootidmap> is used, the group owning the bind "
> "mounted directory will have no effect"

A period is added. Not sure if there's some other issue.

> Man page: systemd-oomd.service.8
> Issue:    B<systemd> → B<systemd>(1)

Done.

> Man page: systemd.path.5
> Issue 1:  B<systemd.exec>(1) → B<systemd.exec>(5)
> Issue 2:  This section does not (yet?) exist

Fixed.

> Man page: systemd-pcrphase.service.8
> Issue 1:  indicate phases into TPM2 PCR 11 ??
> Issue 2: Colon at the end of the paragraph?

Fixed.

> Man page: systemd-pcrphase.service.8
> Issue:    final boot phase → final shutdown phase?

Updated.

> Man page: systemd-pcrphase.service.8
> Issue:    for the the → for the

Fixed tree-wide.

> Man page: systemd-portabled.service.8
> Issue:    In systemd-portabled.service(8): Portable Services Documentation

Updated.

> Man page: systemd-pstore.service.8
> Issue:    Here and the following paragraphs: . → \\&. // Upstream: What does this comment mean? // You normally write \\&. for a full dot (full stop etc.); here you write only "." (i.e. a plain dot).
>
> "and we look up \"localhost\", nss-dns will send the following queries to "
> "systemd-resolved listening on 127.0.0.53:53: first \"localhost.foobar.com\", "
> "then \"localhost.barbar.com\", and finally \"localhost\". If (hopefully) the "
> "first two queries fail, systemd-resolved will synthesize an answer for the "
> "third query."

Looks all OK to me.

> Man page: systemd.resource-control.5
> Issue:    Missing closing bracket after link to Control Groups version 1

Fixed.

> Man page: systemd-sysext.8
> Issue:    In systemd-portabled.service(8): Portable Services Documentation

Updated.

> Man page: systemd.timer.5
> Issue 1:  B<systemd.exec>(1) → B<systemd.exec>(5)
> Issue 2:  This section does not (yet?) exist

Fixed.

> Man page: systemd.unit.5
> Issue:    that is → that are

Fixed.

> Man page: systemd-veritysetup-generator.8
> Issue:    systemd-veritysetup-generator → B<systemd-veritysetup-generator>
>
 > "systemd-veritysetup-generator implements B<systemd.generator>(7)\\&."
>
> "systemd-veritysetup-generator understands the following kernel command line "
> "parameters:"

Updated.

> Man page: systemd-volatile-root.service.8
> Issue:    initrdyes → Initrd

Fixed.

> Man page: sysupdate.d.5
> Issue:    : → \\&. (As above in TRANSFER)

Updated.

> Man page: sysupdate.d.5
> Issue:    some → certain

Updated.

> Man page: sysupdate.d.5
> Issue 1:  i\\&.e\\& → I\\&.e\\&

Fixed.

> Issue 2:  the image → the system

"image" seems correct.

> Man page: tmpfiles.d.5
> Issue:    systemd-tmpfiles → B<systemd-tmpfiles>(8)

Updated.
2023-01-11 17:12:54 +01:00
Yu Watanabe
15f330cf87 man: mention that DefaultRouteOnDevice= create the IPv4 default route
And add an example setting for creating an IPv6 default route.

Closes #25440.
2022-12-08 10:26:26 +01:00
Yu Watanabe
6c2d70ce9f tree-wide: fix typo 2022-12-02 13:27:08 +09:00
Yu Watanabe
8c92063633 network: tc-cake: add support to specify ACK filter 2022-11-19 07:08:22 +09:00
Yu Watanabe
3af9cd0bf1 network: tc-cake: add support to specify RTT 2022-11-17 21:13:42 +09:00
Zbigniew Jędrzejewski-Szmek
195427cd18 man: grammarro 2022-11-07 12:45:26 +01:00
Luca Boccassi
4b9cfe08ba
Merge pull request #25166 from yuwata/network-router-preference
network: adjust route metric based on router preference
2022-10-31 20:59:36 +01:00
Yu Watanabe
6f812d2899 network: adjust route priority based on preference
Even if different preference is specified, the kernel merges multiple
routes with the same preference. This is problematic when a network has
multiple routers.

Fixes #25138.
2022-10-28 15:48:28 +09:00
Yu Watanabe
7db98bc938 network: make RouteTable= also accept route table name 2022-10-28 11:35:17 +09:00
Jade Bilkey
bc33789a06 man: fix static bridge example
A NetDev is needed to create the bridge in order to match the example's description "This creates a bridge..."
2022-09-04 11:19:14 +09:00
Topi Miettinen
4b3590c324 network: NetLabel integration
New directive `NetLabel=` provides a method for integrating static and dynamic
network configuration into Linux NetLabel subsystem rules, used by Linux
Security Modules (LSMs) for network access control. The label, with suitable
LSM rules, can be used to control connectivity of (for example) a service with
peers in the local network. At least with SELinux, only the ingress can be
controlled but not egress. The benefit of using this setting is that it may be
possible to apply interface independent part of NetLabel configuration at very
early stage of system boot sequence, at the time when the network interfaces
are not available yet, with netlabelctl(8), and the per-interface configuration
with systemd-networkd once the interfaces appear later.  Currently this feature
is only implemented for SELinux.

The option expects a single NetLabel label. The label must conform to lexical
restrictions of LSM labels. When an interface is configured with IP addresses,
the addresses and subnetwork masks will be appended to the NetLabel Fallback
Peer Labeling rules. They will be removed when the interface is
deconfigured. Failures to manage the labels will be ignored.

Example:
```
[DHCPv4]
NetLabel=system_u:object_r:localnet_peer_t:s0
```

With the above rules for interface `eth0`, when the interface is configured with
an IPv4 address of 10.0.0.123/8, `systemd-networkd` performs the equivalent of
`netlabelctl` operation

```
$ sudo netlabelctl unlbl add interface eth0 address:10.0.0.0/8 label:system_u:object_r:localnet_peer_t:s0
```

Result:
```
$ sudo netlabelctl -p unlbl list
...
 interface: eth0
   address: 10.0.0.0/8
    label: "system_u:object_r:localnet_peer_t:s0"
...
```
2022-08-29 14:23:17 +09:00
Yu Watanabe
dc7c21f001 network: introduce TCPCongestionControlAlgorithm=
Closes #24432.
2022-08-26 19:47:23 +09:00
Zbigniew Jędrzejewski-Szmek
15102ced42 man: similar → similarly
Something *is* similar
Something *works* similarly
Something does something, similarly to how something else does something

See https://sites.ulethbridge.ca/roussel/2017/11/29/similar-and-similarly-are-they-similar/
for a clear explanation.
2022-08-23 12:14:58 +02:00
Yu Watanabe
50ee1fec3a network: dhcp6: re-introduce RapidCommit= setting
Previous implementation of disabling rapid commit was broken, and
dropped by 308d01f3c4.

Let's re-introduce the option in the correct way, as some servers seem
to return borked message when the solicit message contain the rapid
commit option.

Closes #24065.
2022-07-22 21:28:20 +09:00
Jan Janssen
6a1d8f1161 man: Miscellaneous fixes
Fixes: #24056
2022-07-19 10:41:13 +01:00
lastkrick
69a7d10832
man: fix typo in systemd.network documentation in IPv6RoutePrefix section (#24030) 2022-07-16 00:45:56 +09:00
Lennart Poettering
4f80cfca5e pid1: add mechanism for conditionalizing units/network/netdev/link based on credentials passed in
This is useful when provisioning systems via nspawn/qemu and running
specific services only if specific data is passed into the system.
2022-07-15 10:53:45 +02:00
Yu Watanabe
d3efcd2def network: refuse 169.254.0.0/24 and 169.254.255.0/24 for IPv4LLStartAddress=
Follow-up for #23927.
2022-07-15 03:37:09 +09:00
Andre Kalb
1df6201882 man/network: ServerAddress= drop "literal" from IP address ranges 2022-07-14 14:35:42 +02:00
Andre Kalb
34b63c9e45 network: Add support to select an IPv4 link-local start address 2022-07-13 23:57:18 +02:00
nl6720
0e68582323 tree-wide: link to docs.kernel.org for kernel documentation
https://www.kernel.org/ links to https://docs.kernel.org/ for the documentation.
See https://git.kernel.org/pub/scm/docs/kernel/website.git/commit/?id=ebc1c372850f249dd143c6d942e66c88ec610520

These URLs are shorter and nicer looking.
2022-07-04 19:56:53 +02:00
Zbigniew Jędrzejewski-Szmek
f217f9a8b3 man/network: fix wording and syntax
Follow-up for 0bcc6557fb. Docbook doesn't
know <variable>.
2022-07-02 13:40:49 +02:00
Zbigniew Jędrzejewski-Szmek
2f8211c64a tree-wide: use html links for kernel docs
Instead of using "*.txt" as reference name, use the actual destination title.
2022-07-02 12:13:00 +02:00
Yu Watanabe
a32badc5a6 Revert "networkd: NetLabel integration"
This reverts PR #23269 and its follow-up commit. Especially,
2299b1cae3 (partially), and
3cf63830ac.

The PR was merged without final approval, and has several issues:
- The NetLabel for static addresses are not assigned, as labels are
  stored in the Address objects managed by Network, instead of Link.
- If NetLabel is specified for a static address, then the address
  section will be invalid and the address will not be configured,
- It should be implemented with Request object,
- There is no test about the feature.
2022-06-22 22:34:26 +09:00
Yu Watanabe
b48ed70c79 Revert NFTSet feature
This reverts PR #22587 and its follow-up commit. More specifically,
2299b1cae3 (partially),
e176f85527,
ceb46a31a0, and
51bb9076ab.

The PR was merged without final approval, and has several issues:
- OSS fuzz reported issues in the conf parser,
- It calls synchrnous netlink call, it should not be especially in PID1,
- The importance of NFTSet for CGroup and DynamicUser may be
  questionable, at least, there was no justification PID1 should support
  it.
- For networkd, it should be implemented with Request object,
- There is no test for the feature.

Fixes #23711.
Fixes #23717.
Fixes #23719.
Fixes #23720.
Fixes #23721.
Fixes #23759.
2022-06-22 22:23:58 +09:00
Topi Miettinen
ab51fd9dbd network: firewall integration with NFT sets
New directives `NFTSet=`, `IPv4NFTSet=` and `IPv6NFTSet=` provide a method for
integrating configuration of dynamic networks into firewall rules with NFT
sets.

/etc/systemd/network/eth.network
```
[DHCPv4]
...
NFTSet=netdev:filter:eth_ipv4_address
```

```
table netdev filter {
        set eth_ipv4_address {
                type ipv4_addr
                flags interval
        }
        chain eth_ingress {
                type filter hook ingress device "eth0" priority filter; policy drop;
                ip saddr != @eth_ipv4_address drop
                accept
        }
}
```
```
sudo nft list set netdev filter eth_ipv4_address
table netdev filter {
        set eth_ipv4_address {
                type ipv4_addr
                flags interval
                elements = { 10.0.0.0/24 }
        }
}
```
2022-06-08 16:12:25 +00:00
Topi Miettinen
3cf63830ac networkd: NetLabel integration
New directive `NetLabel=` provides a method for integrating dynamic network
configuration into Linux NetLabel subsystem rules, used by Linux security
modules (LSMs) for network access control. The option expects a whitespace
separated list of NetLabel labels. The labels must conform to lexical
restrictions of LSM labels. When an interface is configured with IP addresses,
the addresses and subnetwork masks will be appended to the NetLabel Fallback
Peer Labeling rules. They will be removed when the interface is
deconfigured. Failures to manage the labels will be ignored.

Example:
```
[DHCP]
NetLabel=system_u:object_r:localnet_peer_t:s0
```

With the above rules for interface `eth0`, when the interface is configured with
an IPv4 address of 10.0.0.0/8, `systemd-networkd` performs the equivalent of
`netlabelctl` operation

```
$ sudo netlabelctl unlbl add interface eth0 address:10.0.0.0/8 label:system_u:object_r:localnet_peer_t:s0
```

Result:
```
$ sudo netlabelctl -p unlbl list
...
 interface: eth0
   address: 10.0.0.0/8
    label: "system_u:object_r:localnet_peer_t:s0"
...
```
2022-06-06 18:24:10 +00:00
Alex Henrie
6e40d0e458 network: clarify the relationship between DHCP= and WithoutRA=
Just setting DHCP=ipv6 is not enough to get DHCPv6 working without RA.
The WithoutRA option must also be changed from its default of "no".
2022-05-06 14:01:53 -06:00
Alex Henrie
0bcc6557fb network: clarify the relationship between RA flags and DHCPv6 modes
In the documentation, using the term "managed" for both the RA flag and
the DHCPv6 mode is confusing because the mode is referred to as
"solicit" both in the official DHCPv6 documentation (see RFC 8415) and
in the WithoutRA option.

Furthermore, calling the other RA flag "other information" or "other
address configuration" is confusing because its official name is simply
"other configuration" (see RFC 4861 and RFC 5175) and it isn't used to
assign IP addresses.

Rewrite the documentation for DHCPv6Client and WithoutRA to make it
clear that getting the "managed" RA flag triggers the same kind of DHCP
request as WithoutRA=solicit, whereas getting the "other configuration"
RA flag triggers the same kind of DHCP request as
WithoutRA=information-request.
2022-05-06 14:01:53 -06:00
Yu Watanabe
625d71b9ae man: DHCPPrefixDelegation= needs to be enabled on downstream side for assigning delegated prefixes
Closes #23041.
2022-04-18 04:30:56 +09:00
Yu Watanabe
cc9b6bdc96 man: recommend that .network or friends should have a numeric prefix
Closes #23105.
2022-04-18 04:30:49 +09:00
Yu Watanabe
b17a681be5 tree-wide: fix typo 2022-04-02 00:34:39 +09:00
Sebastian Pucilowski
f81ac115dc Fix "link-local" language inconsistencies
"Link-local" and "link local" are used throughout man pages and program
output, with the former used far more than the latter. This commit makes
it consistent throughout the project.
2022-03-31 12:08:29 +02:00