ipq807x: backport latest cake to v4.4

Signed-off-by: John Crispin <john@phrozen.org>

feeds/ipq807x/kmod-sched-cake/Makefile

@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2016 LEDE
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=sched-cake
+PKG_RELEASE:=1
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/dtaht/sch_cake.git
+PKG_SOURCE_DATE:=2021-07-09
+PKG_SOURCE_VERSION:=d9e1398cc9091e9e7c7a740361e4617b75c24427
+#PKG_MIRROR_HASH:=5bf06a804824db36ae393fc174aeec7b12633176e05a765c0931b39df5bd34df
+PKG_MAINTAINER:=Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
+
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/sched-cake
+  SUBMENU:=Network Support
+  TITLE:=Cake fq_codel/blue derived shaper
+  URL:=https://github.com/dtaht/sch_cake
+  FILES:=$(PKG_BUILD_DIR)/sch_cake.ko
+  AUTOLOAD:=$(call AutoLoad,75,sch_cake)
+  DEPENDS:=+kmod-ipt-conntrack
+endef
+
+include $(INCLUDE_DIR)/kernel-defaults.mk
+
+define KernelPackage/sched-cake/description
+  Common Applications Kept Enhanced fq_codel/blue derived shaper
+endef
+
+define Build/Compile
+	$(KERNEL_MAKE) SUBDIRS="$(PKG_BUILD_DIR)" modules
+endef
+
+$(eval $(call KernelPackage,sched-cake))

feeds/ipq807x/kmod-sched-cake/patches/100-compat.patch

@@ -0,0 +1,20 @@
+Index: sched-cake-2021-07-09-d9e1398c/cobalt_compat.h
+===================================================================
+--- sched-cake-2021-07-09-d9e1398c.orig/cobalt_compat.h
++++ sched-cake-2021-07-09-d9e1398c/cobalt_compat.h
+@@ -95,15 +95,6 @@ static inline unsigned int __tcp_hdrlen(
+ }
+ #endif
+ 
+-#if KERNEL_VERSION(4, 6, 0) > LINUX_VERSION_CODE
+-static inline int skb_try_make_writable(struct sk_buff *skb,
+-					unsigned int write_len)
+-{
+-	return skb_cloned(skb) && !skb_clone_writable(skb, write_len) &&
+-	       pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+-}
+-#endif
+-
+ #if KERNEL_VERSION(4, 11, 0) > LINUX_VERSION_CODE
+ static inline int skb_mac_offset(const struct sk_buff *skb)
+ {

profiles/wifi-ax.yml

@@ -5,3 +5,4 @@ feeds:
     path: ../../feeds/wifi-ax
 packages:
   - wireless-regdb
+  - kmod-sched-cake