forked from DGNum/liminix
make a module for vlan
Acked-by: Daniel Barlow <<dan@telent.net>>
This commit is contained in:
Daniel Barlow
parent
efa1919e04
commit
333327be75
5 changed files with 90 additions and 51 deletions
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@ -115,6 +115,7 @@
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NET_RALINK_MDIO = "y";
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NET_RALINK_MDIO_MT7620 = "y";
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NET_RALINK_MT7620 = "y";
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SWPHY = "y";
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SPI = "y";
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MTD_SPI_NOR = "y";
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@ -123,14 +124,6 @@
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SPI_MASTER= "y";
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SPI_MEM= "y";
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# both the ethernet ports on this device (lan and wan)
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# are behind a switch, so we need VLANs to do anything
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# useful with them
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VLAN_8021Q = "y";
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SWCONFIG = "y";
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SWPHY = "y";
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MTD = "y";
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MTD_CMDLINE_PARTS = "y";
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MTD_BLOCK = "y"; # fix undefined ref to register_mtd_blktrans_devs
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@ -52,44 +52,40 @@
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"${openwrt.src}/target/linux/ramips/dts"
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];
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};
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networkInterfaces = rec {
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# lan and wan ports are both behind a switch on eth0
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eth =
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let swconfig = oneshot {
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name = "swconfig";
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up = ''
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PATH=${pkgs.swconfig}/bin:$PATH
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swconfig dev switch0 set reset
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swconfig dev switch0 set enable_vlan 1
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swconfig dev switch0 vlan 1 set ports '1 2 3 4 6t'
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swconfig dev switch0 vlan 2 set ports '0 6t'
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swconfig dev switch0 set apply
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'';
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down = "swconfig dev switch0 set reset";
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};
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in interface {
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device = "eth0";
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dependencies = [swconfig];
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networkInterfaces =
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let
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inherit (config.system.service.network) link;
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inherit (config.system.service) vlan;
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swconfig = oneshot {
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name = "swconfig";
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up = ''
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PATH=${pkgs.swconfig}/bin:$PATH
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swconfig dev switch0 set reset
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swconfig dev switch0 set enable_vlan 1
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swconfig dev switch0 vlan 1 set ports '1 2 3 4 6t'
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swconfig dev switch0 vlan 2 set ports '0 6t'
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swconfig dev switch0 set apply
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'';
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down = "swconfig dev switch0 set reset";
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};
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in rec {
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eth = link.build { ifname = "eth0"; dependencies = [swconfig]; };
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# lan and wan ports are both behind a switch on eth0
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lan = vlan.build {
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ifname = "eth0.1";
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primary = eth;
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vid = "1";
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};
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wan = vlan.build {
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ifname = "eth0.2";
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primary = eth;
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vid = "2";
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};
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wlan = link.build {
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ifname = "wlan0";
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dependencies = [ mac80211 ];
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};
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lan = interface {
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type = "vlan";
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device = "eth0.1";
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link = "eth0";
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id = "1";
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dependencies = [eth];
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};
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wan = interface {
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type = "vlan";
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device = "eth0.2";
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id = "2";
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link = "eth0";
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dependencies = [eth];
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};
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wlan = interface {
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device = "wlan0";
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dependencies = [ mac80211 ];
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};
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};
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};
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boot.tftp = {
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# 20MB seems to give enough room to uncompress the kernel
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@ -148,13 +144,6 @@
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NET_VENDOR_RALINK = "y";
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NET_RALINK_RT3050 = "y";
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NET_RALINK_SOC="y";
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# both the ethernet ports on this device (lan and wan)
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# are behind a switch, so we need VLANs to do anything
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# useful with them
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VLAN_8021Q = "y";
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SWCONFIG = "y";
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SWPHY = "y";
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WATCHDOG = "y";
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@ -31,6 +31,7 @@ in rec {
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../modules/standard.nix
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../modules/wlan.nix
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../modules/network
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../modules/vlan
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];
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hostname = "arhcive";
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41
modules/vlan/default.nix
Normal file
41
modules/vlan/default.nix
Normal file
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@ -0,0 +1,41 @@
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## VLAN
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## ====
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##
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## Virtual LANs give you the ability to sub-divide a LAN. Linux can
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## accept VLAN tagged traffic and presents each VLAN ID as a
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## different network interface (eg: eth0.100 for VLAN ID 100)
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##
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## Some Liminix devices with multiple ethernet ports are implemented
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## using a network switch connecting the physical ports to the CPU,
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## and require using VLAN in order to send different traffic to
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## different ports (e.g. LAN vs WAN)
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{ lib, pkgs, config, ...}:
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let
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inherit (lib) mkOption types;
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inherit (pkgs.liminix.services) oneshot;
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inherit (pkgs) liminix;
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in
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{
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options = {
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system.service.vlan = mkOption { type = liminix.lib.types.serviceDefn; };
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};
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config.system.service.vlan = liminix.callService ./service.nix {
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ifname = mkOption {
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type = types.str;
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description = "interface name to create";
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};
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primary = mkOption {
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description = "existing physical interface";
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type = liminix.lib.types.interface;
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};
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vid = mkOption {
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description = "VLAN identifier (VID) in range 1-4094";
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type = types.str;
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};
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};
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config.kernel.config = {
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VLAN_8021Q = "y";
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SWCONFIG = "y"; # not always appropriate, some devices will use DSA
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};
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}
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15
modules/vlan/service.nix
Normal file
15
modules/vlan/service.nix
Normal file
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@ -0,0 +1,15 @@
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{
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liminix
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, lib
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}:
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{ ifname, primary, vid } :
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let
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inherit (liminix.services) oneshot;
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in oneshot rec {
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name = "${ifname}.link";
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up = ''
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ip link add link $(output ${primary} ifname) name ${ifname} type vlan id ${vid}
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${liminix.networking.ifup name ifname}
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'';
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down = "ip link set down dev ${ifname}";
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}
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