NetworkManager/src
Beniamino Galvani 06032aa758 ndisc: preserve router preferences
If we add multiple default routes with the same metric and different
preferences, kernel merges them into a single ECMP route, with overall
preference equal to the preference of the first route
added. Therefore, the preference of individual routes is not
respected.

To avoid that, add routes with different metrics if they have
different preferences, so that they are not merged together.

We could configure only the route(s) with highest preference ignoring
the others, and the effect would be the same. However, it is better to
add all routes so that users can easily see from "ip route" that there
are multiple routers available.

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/1468
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1983

Fixes: 032b4e4371 ('core: use router preference for IPv6 routes')
(cherry picked from commit c437625a76)
(cherry picked from commit 8445076d55)
2024-12-23 13:46:47 +01:00
..
c-list c-list: re-import git-subtree for 'src/c-list' 2022-07-19 09:02:36 +02:00
c-rbtree c-rbtree: re-import git-subtree for 'src/c-rbtree' 2022-11-23 18:00:31 +01:00
c-siphash c-siphash: re-import git-subtree for 'src/c-siphash' 2022-11-23 18:00:33 +01:00
c-stdaux c-stdaux: re-import git-subtree for 'src/c-stdaux' 2023-03-03 13:40:38 +01:00
contrib all: use nm_strv_empty_new() helper 2023-11-30 15:53:21 +01:00
core ndisc: preserve router preferences 2024-12-23 13:46:47 +01:00
libnm-base code format: run code format script 2024-06-28 11:14:22 +00:00
libnm-client-aux-extern all: use nm_random_*() instead of g_random_*() 2023-01-30 10:51:13 +01:00
libnm-client-impl code format: run code format script 2024-06-28 11:14:22 +00:00
libnm-client-public HSR: add support to HSR/PRP interface 2023-12-05 08:05:56 +01:00
libnm-client-test all: use G_SPAWN_CLOEXEC_PIPES with g_spawn_async_with_pipes() 2023-04-04 08:43:20 +02:00
libnm-core-aux-extern dispatcher: support device-handler actions 2024-02-21 11:49:16 +01:00
libnm-core-aux-intern libnm,nmcli: add ipvx.dhcp-dscp property 2024-02-06 17:02:30 +01:00
libnm-core-impl libnm-core: fix validation of ovs-dpdk interface name 2024-09-26 09:54:46 +02:00
libnm-core-intern nm-setting: implement direct_enum as GObject property of type int 2024-02-21 11:20:52 +01:00
libnm-core-public checkpoint: Allow rollback on internal global DNS 2024-03-20 19:35:42 +01:00
libnm-crypto code format: run code format script 2024-06-28 11:14:22 +00:00
libnm-glib-aux code format: run code format script 2024-06-28 11:14:22 +00:00
libnm-lldp lldp: fix multiple access to argument in logging macro 2024-08-19 15:24:05 +02:00
libnm-log-core log,dhcp: avoid deprecated GTimeVal API and use g_get_real_time() 2023-03-21 10:21:28 +01:00
libnm-log-null
libnm-platform code format: run code format script 2024-06-28 11:14:22 +00:00
libnm-std-aux code format: run code format script 2024-06-28 11:14:22 +00:00
libnm-systemd-core build: use "-Wno-nonnull-compare" for building systemd 2024-02-26 12:09:09 +01:00
libnm-systemd-shared build: use "-Wno-nonnull-compare" for building systemd 2024-02-26 12:09:09 +01:00
libnm-udev-aux
libnmc-base libnmc: don't strip prefix tags from secret names 2024-06-18 16:06:13 +02:00
libnmc-setting man: fix missing deprecation message 2024-04-18 15:31:54 +02:00
libnmt-newt nmtui: handle write() errors correctly in nmt_newt_edit_string 2024-12-23 13:45:04 +01:00
linux-headers platform: remove CSME related code 2023-09-25 11:46:24 +00:00
n-acd n-acd: use separate seed state for each probe of the same acd 2023-10-05 09:02:57 +02:00
n-dhcp4 n-dhcp4: change the default DSCP value to 0 2024-02-06 17:02:31 +01:00
nm-cloud-setup cloud-setup: azure: ensure that primary address is placed first 2024-08-30 13:10:01 +02:00
nm-compat-headers all: add src/nm-compat-headers for patching included system headers 2022-09-23 11:43:33 +02:00
nm-daemon-helper nm-daemon-helper: add "service" argument 2024-08-19 16:56:00 +02:00
nm-dispatcher nm-dispatcher: fix crash when parsing output dictionary 2024-03-26 10:53:43 +01:00
nm-initrd-generator initrd: add support for rd.net.dhcp.dscp property 2024-02-06 17:02:31 +01:00
nm-online all: use NM_MAX() instead of MAX() 2023-11-15 09:32:21 +01:00
nm-priv-helper all: drop redundant includes 2022-05-09 19:20:18 +02:00
nmcli code format: run code format script 2024-06-28 11:14:22 +00:00
nmtui nmtui: Add bond for creating bridge port interface 2024-02-21 11:48:21 +01:00
tests libnm,nmcli: add ipvx.dhcp-dscp property 2024-02-06 17:02:30 +01:00
meson.build build: workaround -Wno-calloc-transposed-args warning in systemd code 2024-02-26 12:17:07 +01:00
README.md

src/

Most of the subdirectories are static helper libraries, which get linked into one of the final build artifacts (like libnm, nmcli or NetworkManager). Static libraries are internal API.

The only public API is libnm, which is a shared library provided client implementations.

Our own clients (like nmcli and nmtui) also use libnm, the shared library. But they also use additional static helper libraries.

The daemon statically links against a part of libnm, the part that provides connection profiles. That is libnm-core. libnm-core is thus statically linked with libnm and the daemon. It does not get linked by clients that already link with libnm (like nmtui).

Read the individual README.md files in the subdirectories for details:

Directory Description
core/ the NetworkManager daemon
nmcli/ nmcli application, a command line client for NetworkManager
nmtui/ nmtui application, a text UI client for NetworkManager
nm-cloud-setup/ service to automatically configure NetworkManager in cloud environment
nm-initrd-generator/ generates NetworkManager configuration by parsing kernel command line options for dracut/initrd
nm-dispatcher/ NetworkManager-dispatcher service to run user scripts
nm-online/ application which checks whether NetworkManager is done, for implementing NetworkManager-wait-online.service
nm-priv-helper/ internal service for privileged operations
nm-daemon-helper/ internal helper binary spawned by NetworkManager
libnm-std-aux/ internal helper library for standard C
libnm-glib-aux/ internal helper library for glib
libnm-log-null/ internal helper library with dummy (null) logging backend
libnm-log-core/ internal helper library with logging backend (syslog) used by daemon
libnm-base/ internal helper library with base definitions
libnm-platform/ internal helper library for netlink and other platform/kernel API
libnm-udev-aux/ internal helper library for libudev
libnm-core-public/ public API of libnm (libnm-core part)
libnm-core-intern/ internal API of libnm-core, used by libnm and daemon
libnm-core-impl/ implementation of libnm-core
libnm-core-aux-intern/ internal helper library on top of libnm-core (used by libnm-core itself)
libnm-core-aux-extern/ internal helper library on top of libnm-core (not used by libnm-core)
libnm-client-public/ public API of libnm (NMClient part)
libnm-client-impl/ implementation of libnm (NMClient)
libnm-client-aux-extern/ internal helper library on top of libnm (not used by libnm itself)
libnmc-base/ internal helper library for libnm clients
libnmc-setting/ internal helper library for setting connection profiles (used by nmcli)
libnmt-newt/ internal helper library for libnewt for nmtui
linux-headers/ extra Linux kernel UAPI headers
contrib/ sources that are not used by NetworkManager itself
tests/ unit tests that are not specific to one of the other directories
libnm-client-test/ internal helper library with test utils for libnm
c-list/ fork of c-util helper library for intrusive, doubly linked list
c-rbtree/ fork of c-util helper library for intrusive Red-Black Tree
c-siphash/ fork of c-util helper library for SIPHash24
c-stdaux/ fork of c-util general purpose helpers for standard C
n-acd/ fork of nettools IPv4 ACD library
n-dhcp4/ fork of nettools DHCPv4 library
libnm-systemd-core/ fork of systemd code as network library
libnm-systemd-shared/ fork of systemd code as general purpose library