add pkgs.openwrt_24_10

is needed by Belkin RT3200 and might also be handy for OpenWrt One?

this is very copy-pastey, will tidy it up after it
stops being a moving target

devices/belkin-rt3200/default.nix

@@ -122,6 +122,7 @@
             cp ${pkgs.linux-firmware}/lib/firmware/mediatek/{mt7915,mt7615,mt7622}* $out
           '';
         };
+        openwrt = pkgs.openwrt_24_10;
     in {
       imports = [
         ../../modules/arch/aarch64.nix
@@ -131,8 +132,10 @@
       config = {
     kernel = {
       extraPatchPhase = ''
-          ${pkgs.openwrt.applyPatches.mediatek}
+          ${openwrt.applyPatches.mediatek}
       '';
+      src = openwrt.kernelSrc;
+      version = openwrt.kernelVersion;
       config = {
         PCI = "y";
         ARCH_MEDIATEK = "y";
@@ -241,7 +244,6 @@
 
     hardware =
       let
-        openwrt = pkgs.openwrt;
         mac80211 =  pkgs.kmodloader.override {
           targets = ["mt7615e" "mt7915e"];
           inherit (config.system.outputs) kernel;

pkgs/default.nix

@@ -100,6 +100,7 @@ in {
   odhcp-script = callPackage ./odhcp-script { };
   odhcp6c = callPackage ./odhcp6c { };
   openwrt = callPackage ./openwrt { };
+  openwrt_24_10 = callPackage ./openwrt/2410.nix { };
   output-template = callPackage ./output-template { };
   ppp = callPackage ./ppp { };
   pppoe = callPackage ./pppoe { };

pkgs/openwrt/2410.nix

@@ -0,0 +1,68 @@
+{ fetchFromGitHub, pkgsBuildBuild, lib }:
+let
+  src = fetchFromGitHub {
+    name = "openwrt-source";
+    repo = "openwrt";
+    owner = "openwrt";
+    rev = "refs/tags/v24.10.0-rc4";
+    hash = "sha256-7edkUCTfGnZeMWr/aXoQrP4I47iXhMi/gUxO2SR+Ylc=";
+  };
+  kernelVersion = "6.6.67";
+  kernelSeries = lib.versions.majorMinor kernelVersion;
+  doPatch = family: ''
+    cp -av ${src}/target/linux/generic/files/* .
+    chmod -R u+w .
+    cp -av ${src}/target/linux/${family}/files/* .
+    chmod -R u+w .
+    test -d ${src}/target/linux/${family}/files-${kernelSeries}/ && cp -av ${src}/target/linux/${family}/files-${kernelSeries}/* .
+    chmod -R u+w .
+    patches() {
+      for i in $* ; do patch --batch --forward -p1 < $i ;done
+    }
+    patches ${src}/target/linux/generic/backport-${kernelSeries}/*.patch
+    patches ${src}/target/linux/generic/pending-${kernelSeries}/*.patch
+    patches ${src}/target/linux/generic/hack-${kernelSeries}/*.patch
+    patches ${src}/target/linux/${family}/patches-${kernelSeries}/*.patch
+    patches \
+      ${./make-mtdsplit-jffs2-endian-agnostic.patch} \
+      ${./fix-mtk-wed-bm-desc-ptr.patch} 
+  '';
+in {
+  inherit src;
+
+  # The kernel sources typically used with this version of openwrt
+  # You can find this in `include/kernel-5.15` or similar in the
+  # openwrt sources
+  kernelSrc = pkgsBuildBuild.fetchurl {
+    name = "linux.tar.gz";
+    url = "https://cdn.kernel.org/pub/linux/kernel/v${lib.versions.major kernelVersion}.x/linux-${kernelVersion}.tar.gz";
+    hash = "sha256-Vj6O6oa83xzAF3FPl6asQK2Zrl7PaBCVjcUDq93caL4=";
+  };
+  inherit kernelVersion;
+
+  applyPatches.ath79 = doPatch "ath79";
+  applyPatches.ramips = doPatch "ramips";
+  applyPatches.mediatek = doPatch "mediatek"; # aarch64
+  applyPatches.mvebu = doPatch "mvebu"; # arm
+
+  applyPatches.rt2x00 = ''
+    PATH=${pkgsBuildBuild.patchutils}/bin:$PATH
+    for i in ${src}/package/kernel/mac80211/patches/rt2x00/6*.patch ; do
+      fixed=$(basename $i).fixed
+      sed '/depends on m/d'  < $i | sed 's/CPTCFG_/CONFIG_/g' | recountdiff | filterdiff -x '*/local-symbols' > $fixed
+      case $fixed in
+        606-*)
+          ;;
+        611-*)
+          filterdiff -x '*/rt2x00.h' < $fixed | patch --forward -p1
+          ;;
+        601-*|607-*)
+          filterdiff -x '*/rt2x00_platform.h' < $fixed | patch --forward -p1
+          ;;
+        *)
+          cat $fixed | patch --forward -p1
+          ;;
+      esac
+    done
+  '';
+}

pkgs/openwrt/fix-mtk-wed-bm-desc-ptr.patch

@@ -0,0 +1,16 @@
+From: Arnout Engelen <arnout@bzzt.net>
+Date: Wed, 18 Dec 2024 14:17:46 +0100
+
+Partial patch from https://gti.telent.net/raboof/liminix/commit/641409230051b82616c6feb35f2c0e730e46f614
+
+--- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c	2024-12-18 11:08:00.598231122 +0100
++++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c	2024-12-18 11:08:29.845100034 +0100
+@@ -625,7 +625,7 @@
+ 
+ static u32 mt7915_mmio_wed_init_rx_buf(struct mtk_wed_device *wed, int size)
+ {
+-	struct mtk_rxbm_desc *desc = wed->rx_buf_ring.desc;
++	struct mtk_wed_bm_desc *desc = wed->rx_buf_ring.desc;
+ 	struct mt76_txwi_cache *t = NULL;
+ 	struct mt7915_dev *dev;
+ 	struct mt76_queue *q;