According to systemd, IPv6 forwarding is special anyway, and they only
enable forwarding for "net.ipv6.conf.all.forwarding" ([1]).
Since commit 46e63e03af ('device: announce the managed IPv6
configuration with ipv6.method=shared') we support "ipv6.method=shared"
and enable forwarding for IPv6, on the interface. Whether that makes
sense is questionable, given [1] and the claim that setting it
per-interface is not useful.
Anyway, since that change we always reset the "forwarding" sysctl to
zero, when we don't enable shared mode. That is not right, because the
user didn't explicitly ask for that (and there is no configuration
option like systemd-networkd's "IPForward=" setting to control that).
What we instead should do, not touch/reset the sysctl, unless we really
want to.
No longer set "forwarding" to zero by default. And only restore the
previous value (_dev_sysctl_save_ip6_properties()) if we actually
changed the value to "1".
[1] b8fba0cded/src/network/networkd-sysctl.c (L79)https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/923
Fixes: 46e63e03af ('device: announce the managed IPv6 configuration with ipv6.method=shared')
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1616
(cherry picked from commit 4c48301594)
Using the ppp code is rather ugly.
Historically, the pppd headers don't follow a good naming convention,
and define things that cause conflicts with our headers:
/usr/include/pppd/patchlevel.h:#define VERSION "2.4.9"
/usr/include/pppd/pppd.h:typedef unsigned char bool;
Hence we had to include the pppd headers in certain order, and be
careful.
ppp 2.5 changes API and cleans that up. But since we need to support
also old versions, it does not immediately simplify anything.
Only include "pppd" headers in "nm-pppd-compat.c" and expose a wrapper
API from "nm-pppd-compat.h". The purpose is that "nm-pppd-compat.h"
exposes clean names, while all the handling of ppp is in the source
file.
(cherry picked from commit afe80171b2)
This change does the following
* Adding in nm-pppd-compat.h to mask details regarding different
versions of pppd.
* Fix the nm-pppd-plugin.c regarding differences in API between
2.4.9 (current) and latet pppd 2.5.0 in master branch
* Additional fixes to the configure.ac to appropriately set defines used
for compilation
(cherry picked from commit 8469c09a50)
Infiniband profiles can have a p-key set. Both in kernel API
("create_child" sysctl) and in NetworkManager API, that key can range
from 0x0001 to 0xFFFF (0x8000 excluded). NetworkManager does not support
renaming the interface, so kernel always assigns the interface name
"$PHYSDEV.$PKEY_ID" (with $PKEY_ID as 4 character hex digits).
Note that the highest bit in the p-key (0x8000) is the full-membership
flag. Internally, kernel only supports full-membership so when we create
for example "ib0.00c1" and "ib0.80c1" interfaces, their actually used
p-key is in both cases 0x80c1 and you can see it with `ip -d link`.
Nonetheless, kernel and NetworkManager allow to configure the p-key
without the highest bit set, and the result differs in the interface
name.
Note that initscripts' ifup-ib0 would always internally coerce the
PKEY_ID variable to have the high bit set ([1]). It also would require
that the `DEVICE=` variable is specified and matches the expected
interface name. So both these configurations are identical and valid:
DEVICE=ib0.80c1
PHYSDEV=ib0
PKEY_ID=0x80c1
and
DEVICE=ib0.80c1
PHYSDEV=ib0
PKEY_ID=0x00c1
Historically, NetworkManager would also implement the same restrictions
([2], [3], [4]). That meant, not all valid NetworkManager infiniband
profiles could be expressed as ifcfg file. For example, NetworkManager
allows to have "connection.interface-name" (`DEVICE=`) unset (which
ifup-ib and ifcfg reader did not allow). Also, NetworkManager would
allow configuring a "infiniband.p-key" without full membership flag, and
the reader would mangle that.
This caused various problems to the point that when you configure an
infiniband.p-key with a non-full-membership key, the ifcfg-rh written by
NetworkManager was invalid. Either, you could leave
"connection.interface-name" unset, but then the reader would complain
about missing `DEVICE=`. Or, we could write `DEVICE=ib0.00c1;
PKEY_ID=0x00c1`, which was invalid as we expected `DEVICE=ib0.80c1`.
This was addressed by rhbz 2122703 ([5]). The fix was to
- not require a `DEVICE=` ([6]).
- don't mangle the `PKEY_ID=` in the reader ([7]).
which happened in 1.41.2 and 1.40.2 (rhel-8.8).
With this change, we could persist any valid infiniband profile to ifcfg
format. We also could read back any valid ifcfg file that NetworkManager
would have written in the past (note that it could not write valid ifcfg
files previously, if the p-key didn't have the full-membership key set).
The problem is, that users were used to edit ifcfg files by hand, and
users would have files with:
DEVICE=ib0.80c1
PHYSDEV=ib0
PKEY_ID=0x00c1
This files had worked before, but now failed to verify as we would
expect `DEVICE=ib0.00c1`. Also, there was a change in behavior that
PKEY_ID is now interpreted without the high bit set. This is reported as
rhbz 2209164 ([8]).
We will do several things to fix that:
1) we now normalize the "connection.interface-name" to be valid. It was
not useful to set it anyway, as it was redundant. Complaining about a
redundant setting, which makes little sense to configure, is not useful.
This is done by [9].
2) we now again treat PKEY_ID= as if it had 0x8000 flag set. This was done by
[10].
With step 1) and 2), we are able to read any existing ifcfg files out
there in the way we did before 1.41.2.
There is however one piece missing. When we now create a profile using
nmcli/libnm/D-Bus, which has a non-full-membership p-key, then the
profile gets mangled in the process.
If the user uses NetworkManager API to configure an interface and
chooses a non-full-membership p-key, then this should work the same as
with keyfile plugin (or on rhel-9, where keyfile is the default). Note
that before 1.41.2 it didn't work at all, when the user used ifcfg-rh
backend. Likely(?) there are no users who rely on creating such a profile
with nmcli/libnm/D-Bus and expect to automatically have the p-key
normalized. That didn't work before 1.41.2 and didn't behave that way
between 1.41.2 and now.
This patch fixes that by introducing a new key PKEY_ID_NM= for holding
the real p-key. Now ifcfg backend is consistent with handling infiniband
profiles, and old, hand-written ifcfg files still work as before.
There is of course change in behavior, that ifcfg files between 1.41.2
and now were interpreted differently. But that is bug 2209164 ([8]) and
what we fix here.
For now strong reasons, we keep writing the PKEY_ID to file too. It's
redundant, but that is what a human might expect there.
[1] 05333c3602/f/rdma.ifup-ib (_75)
[2] https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/blob/1.40.0/src/core/settings/plugins/ifcfg-rh/nms-ifcfg-rh-reader.c#L5386
[3] cb5606cf1c (a7a78fccb2c8c945fd09038656ae734c1b0349ab_3493_3532)
[4] cb5606cf1c (a7a78fccb2c8c945fd09038656ae734c1b0349ab_3493_3506)
[5] https://bugzilla.redhat.com/show_bug.cgi?id=2122703
[6] 4c32dd9d25
[7] a4fe16a426
[8] https://bugzilla.redhat.com/show_bug.cgi?id=2209164
[9] 4610fd67e6
[10] f8e5e07355
(cherry picked from commit 5e3e38f291)
This is the same what kernel does, when the parent name is so long
that it would result in a too long overall name.
We need that the result is still a valid interface name.
(cherry picked from commit 1009f1f11f)
NetworkManager does not support changing the interface name for
infiniband interfaces. Consequently, we verify that
"connection.interface-name" is either unset or set to the expected
"$parent.$p_key". Anything else wouldn't work anyway and is rejected as
invalid configuration. That brings problems however.
Rejecting invalid configuration seems fine at first:
$ nmcli --offline connection add type infiniband infiniband.parent ib0 infiniband.p-key 0x8010 connection.interface-name xxx
Error: Error writing connection: connection.interface-name: interface name of software infiniband device must be 'ib0.8010' or unset (instead it is 'xxx')
However, when we modify the p-key, we also get an error message:
$ nmcli --offline connection add type infiniband infiniband.parent ib0 infiniband.p-key 0x8010 connection.interface-name ib0.8010 |
nmcli --offline connection modify infiniband.p-key 5
Error: Error writing connection: connection.interface-name: interface name of software infiniband device must be 'ib0.0005' or unset (instead it is 'ib0.8010')
It's worse, because ifcfg-rh reader will mangle the PKEY_ID with |=0x8000 to set
the full membership flag. That means, if you add a profile like
$ nmcli --offline connection add type infiniband infiniband.parent ib0 infiniband.p-key 0x0010 connection.interface-name ib0.0010
it gets written to ifcfg-rh file. Then upon reload it's invalid (as the
interface name mismatches).
There are multiple solutions for this. For example, ifcfg-rh reader could also
mangle the connection.interface-name, so that the overall result is valid. Or
we could just not validate at all, and accept any bogus interface-name.
With this patch instead we will just normalize the invalid configuration to
make it right.
$ nmcli --offline connection add type infiniband infiniband.parent ib0 infiniband.p-key 0x8010 connection.interface-name ib0.8010 |
nmcli --offline connection modify infiniband.p-key 5
...
The downside is that this happens silently, so a user doesn't
notice that configuration is ignored:
$ nmcli --offline connection add type infiniband infiniband.parent ib0 infiniband.p-key 0x8010 connection.interface-name foo
...
interface-name=ib0.8010
This approach still seems preferable, because setting
"connection.interface-name" for infiniband profiles makes little sense,
so what we care here is to avoid problems.
(cherry picked from commit 4610fd67e6)
Historically, initscripts' ifup-ib would set the highest bit of
PKEY_ID=. That changed and needs to be restored.
Note that it probably makes little sense to ever configure p-keys
without the highest bit set, because that flag indicates full membership
and kernel will automatically add it. At least, kernel will add the flag
for the p-key, but not for the automatically chosen interface name.
Meaning, writing 0x00f0 to create_child sysctl, results in an interface
"$parent.00f0", but `ip -d link` shows pkey 0x80f0.
As NetworkManager otherwise supports p-keys without the highest bit set,
and since that high bit is honored for the interface name, we cannot
just always add the high bit. NetworkManager always assuming the highest
bit is set, would change the interface names of existing configuration.
With this revert, when a user configures a small p-key and the profile
is stored in ifcfg-rh format, the settings backend will automatically
mangle the profile and set 0x8000. That is different from when the
profile is stored in keyfile format. Since using small p-keys is
probably an odd case, we don't try to workaround that any other way
(like that ifcfg format could represent the orignal value of the profile
and not doing such mangling, or to add the high bit throughout
NetworkManager to the p-key). It's an inconsistency, but given the
existing behaviors it seems best to stick (revert) to it.
This reverts commit a4fe16a426.
Affected versions were 1.42.2+ and 1.40.2+.
See-also: 05333c3602/f/rdma.ifup-ib (_75)https://bugzilla.redhat.com/show_bug.cgi?id=2209164
(cherry picked from commit f8e5e07355)
When a fixed address is assigned by the P2P group owner, then the code
would set the IPv4 configuration method to DISABLED internally. However,
this causes issues, because it means that IPv4 is considered to not have
come up internally which can cause the connection to later time out even
though it was configured properly.
As such, map this method to MANUAL in this case. The AUTO mapping
becomes then:
* MANUAL: If the remote part is the GO and assigned an IP address
* DHCP: If the remote part is the GO and did not assign an address
* SHARED: If we are the GO
This fixes an issue where the connection established by GNOME Network
Displays would fail once IPv6 configuration also times out.
See-also: https://gitlab.gnome.org/GNOME/gnome-network-displays/-/issues/279https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1636
(cherry picked from commit d07383d3f3)
In constructed(), NMDevice starts watching the D-Bus name owner or
monitoring the unix socket, and so it is always aware if teamd is
running. When it is, NMDevice connects to it and initializes
priv->tdc.
It is not useful to try to connect to teamd in update_connection()
because warnings will be generated by NM and by libteam if teamd is
not running. As explained above the connection is always initialized
when teamd is available, and so we can just check priv->tdc.
Fixes: ab586236e3 ('core: implement update_connection() for Team')
https://bugzilla.redhat.com/show_bug.cgi?id=2182029https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1631
(cherry picked from commit 93430627c2)
This ABI was backported all the way to 1.42.8 and 1.40.20 and to rhel-8.9.
Move the ABI to a separate symbol version, which we have in all those
versions.
(cherry picked from commit bc0818fe13)
Currently if the IPv6 link-local address is removed after it passed
DAD, NetworkManager tries to generate a new link-local address. If
this fails, which is always the case for EUI64, ipv6ll is considered
as failed and the connection can go down (depending on may-fail).
This is particularly bad for virtual interfaces because if somebody
removes the link-local address, the activation can fail and destroy
the interface, breaking all services that require it. Also, it's a
change in behavior introduced in 1.36.0.
It seems that a better approach here is to re-add the address that was
removed externally.
[bgalvani@redhat.com: since the branch is missing commit 7ca95cee15
('platform: always reconfigure IP routes even if removed externally'),
we need to set flag NM_L3CFG_CONFIG_FLAGS_FORCE_ONCE when committing
the address, otherwise it's not re-added]
Fixes: aa070fb821 ('core: add NML3IPv6LL helper')
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1622
(cherry picked from commit 53ba9f4701)
Add per port priority support for bond active port re-selection during
failover. A higher number means a higher priority in selection. The
primary port still has the highest priority. This option is only
compatible with active-backup, balance-tlb and balance-alb modes.
(cherry picked from commit 2f0571f193)
sysfs is deprecated and kernel will not add new bond port options to
sysfs. Netlink is a stable API and therefore is the right method to
communicate with kernel in order to set the link options.
(cherry picked from commit bb435674b5)
There are many functions to replace properties of a link
(link_set_address, link_set_mtu, link_set_name, link_change,
etc.). Eventually, they will be replaced by a function that does
everything and removes all the code duplication.
That function will be named link_change(); rename the current
link_change() to link_change_extra().
(cherry picked from commit babe2bacd3)
Older versions of iproute2 don't support the "enclimit" argument. Work
around that from the unit tests.
Fixes: 1505ca3626 ('platform/tests: ip6gre & ip6gretap test cases (ip6 tunnel flags)')
(cherry picked from commit 640c82710f)
If the client was waiting for IPv6 DAD to complete and the lease was
updated or lost, `wait_ipv6_dad` needs to be cleared; otherwise, at
the next platform change the client will try to evaluate the DAD state
with a different or no lease. In particular if there is no lease the
client will try to decline it because there are no valid addresses,
leading to an assertion failure:
../src/core/dhcp/nm-dhcp-client.c:997:_dhcp_client_decline: assertion failed: (l3cd)
Backtrace:
__GI_raise ()
__GI_abort ()
g_assertion_message ()
g_assertion_message_expr ()
_dhcp_client_decline (self=0x1af13b0, l3cd=0x0, error_message=0x8e25e1 "DAD failed", error=0x7ffec2c45cb0) at ../src/core/dhcp/nm-dhcp-client.c:997
l3_cfg_notify_cb (l3cfg=0x1bc47f0, notify_data=0x7ffec2c46c60, self=0x1af13b0) at ../src/core/dhcp/nm-dhcp-client.c:1190
g_closure_invoke ()
g_signal_emit_valist ()
g_signal_emit ()
_nm_l3cfg_emit_signal_notify () at ../src/core/nm-l3cfg.c:629
_nm_l3cfg_notify_platform_change_on_idle () at ../src/core/nm-l3cfg.c:1390
_platform_signal_on_idle_cb () at ../src/core/nm-netns.c:411
g_idle_dispatch ()
Fixes: 393bc628ff ('dhcp: wait DAD completion for DHCPv6 addresses')
https://bugzilla.redhat.com/show_bug.cgi?id=2179890https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1594
(cherry picked from commit 24461954d0)
F_SETFL will reset the flags. That is wrong, as we only want to add
O_NONBLOCK flag and leaving the other flags alone. Usually, we would
need to call F_GETFL first.
Note that on Linux, F_SETFL can only set certain flags, so the
O_RDWR|O_CLOEXEC flags were unaffected by this. That means, most likely
there are no other flags that our use of F_SETFL would wrongly clear.
Still, it's ugly, because it's not obvious whether there might be other
flags.
Avoid that altogether, by setting the flag already during open().
Fixes: 67e092abcb ('core: better handling of rfkill for WiMAX and WiFi (bgo #629589) (rh #599002)')
(cherry picked from commit 62a85fa845)
A "minor" release can still be the latest release. It depends
on which minor release you do. The script isn't smart enough
to understand the difference, so make the hint a bit clearer.
(cherry picked from commit 3c548dd081)
src/libnm-core-impl/tests/test-keyfile.c: In function '_invalid_option_write_handler':
src/libnm-core-impl/tests/test-keyfile.c:917:9: error: 'message' may be used uninitialized [-Werror=maybe-uninitialized]
917 | g_assert(message && strstr(message, "ethtool.bogus"));
| ^
src/libnm-core-impl/tests/test-keyfile.c:905:29: note: 'message' was declared here
905 | const char *message;
| ^
lto1: all warnings being treated as errors
(cherry picked from commit 8d6349156b)
"wifi.seen-bssids" looks like a regular property, but it is not. Unlike
almost all other properties, it does not contain user configuration,
rather it gets filled by the daemon.
The values are thus stored in "/var/lib/NetworkManager/seen-bssids"
file, and the daemon maintains the values separately from the profile.
Only before exporting the profile on D-Bus, the value gets merged (see
NM_SETTINGS_CONNECTION_GET_PRIVATE(self)->>getsettings_cached and
nm_connection_to_dbus_full().
Hence, looking at nm_setting_wireless_get_num_seen_bssids() is not
working. Fix that.
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/1253
Fixes: 0f3203338c ('wifi: roam aggressively if we on a multi-AP network')
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1577
(cherry picked from commit 07c6f933d1)
