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support setting network device names

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this means that net devices in devices/foo/default.nix can be
specified by their sysfs paths (instead of by "eth0" and "eth1" that
may change from one kernel version to the next) and given mnenomic
names that are helpful for the hardware. Like "wan" and "lan[1..4]"
This commit is contained in:
Daniel Barlow
2023-11-26 23:15:28 +00:00
parent e2ea145ce5
commit cc73a98419
3 changed files with 39 additions and 5 deletions
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14
modules/network/default.nix
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@@ -68,7 +68,21 @@ in {
ifname = mkOption {
type = types.str;
example = "eth0";
description = ''
Device name as used by the kernel (as seen in "ip link"
or "ifconfig" output). If devpath is also specified, the
device will be renamed to the name provided.
'';
};
devpath = mkOption {
type = types.nullOr types.str;
default = null;
example = "/devices/platform/soc/soc:internal-regs/f1070000.ethernet";
description = ''
Path to the sysfs node of the device. If you provide this
and the ifname option, the device will be renamed to the
name given by ifname.
''; };
# other "ip link add" options could go here as well
mtu = mkOption {
type = types.nullOr types.int;