rtl8821cu: add package

package/kernel/rtl8821cu/Makefile

@@ -0,0 +1,86 @@
+#
+# Copyright (C) 2021 ImmortalWrt
+# <https://immortalwrt.org>
+#
+# This is free software, licensed under the GNU General Public License v3.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=rtl8821cu
+PKG_RELEASE:=1
+
+PKG_SOURCE_URL:=https://github.com/brektrou/rtl8821CU.git
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_DATE:=2020-12-19
+PKG_SOURCE_VERSION:=428a0820487418ec69c0edb91726d1cf19763b1e
+PKG_MIRROR_HASH:=77958d3bff8b0145504a10959765be0e3743b9c4880a5173d156238c2c569a56
+
+PKG_LICENSE:=GPL-2.0
+PKG_LICENSE_FILES:=LICENSE
+PKG_MAINTAINTER:=CN_SZTL <cnsztl@immortalwrt.org>
+
+PKG_BUILD_PARALLEL:=1
+
+STAMP_CONFIGURED_DEPENDS := $(STAGING_DIR)/usr/include/mac80211-backport/backport/autoconf.h
+
+include $(INCLUDE_DIR)/kernel.mk
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/rtl8821cu
+  SUBMENU:=Wireless Drivers
+  TITLE:=Realtek RTL8811CU/RTL8821CU support
+  DEPENDS:=+kmod-cfg80211 +kmod-usb-core +@DRIVER_11N_SUPPORT +@DRIVER_11AC_SUPPORT
+  FILES:=$(PKG_BUILD_DIR)/rtl8821cu.ko
+  AUTOLOAD:=$(call AutoProbe,rtl8821cu)
+  PROVIDES:=kmod-rtl8821cu
+endef
+
+NOSTDINC_FLAGS = \
+	-I$(PKG_BUILD_DIR) \
+	-I$(PKG_BUILD_DIR)/include \
+	-I$(STAGING_DIR)/usr/include/mac80211-backport \
+	-I$(STAGING_DIR)/usr/include/mac80211-backport/uapi \
+	-I$(STAGING_DIR)/usr/include/mac80211 \
+	-I$(STAGING_DIR)/usr/include/mac80211/uapi \
+	-include backport/autoconf.h \
+	-include backport/backport.h
+
+EXTRA_KCONFIG:= \
+	CONFIG_RTL8821CU=m \
+	USER_MODULE_NAME=rtl8821cu
+
+ifeq ($(ARCH),aarch64)
+	EXTRA_KCONFIG += CONFIG_MP_VHT_HW_TX_MODE=n
+endif
+
+EXTRA_CFLAGS:= \
+	-DRTW_SINGLE_WIPHY \
+	-DRTW_USE_CFG80211_STA_EVENT \
+	-DCONFIG_IOCTL_CFG80211 \
+	-DCONFIG_CONCURRENT_MODE \
+	-DBUILD_OPENWRT
+
+ifeq ($(ARCH),arm)
+	EXTRA_CFLAGS += -mfloat-abi=softfp
+endif
+
+ifeq ($(BOARD),x86)
+	EXTRA_CFLAGS += -mhard-float
+endif
+
+MAKE_OPTS:= \
+	$(KERNEL_MAKE_FLAGS) \
+	M="$(PKG_BUILD_DIR)" \
+	NOSTDINC_FLAGS="$(NOSTDINC_FLAGS)" \
+	USER_EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
+	$(EXTRA_KCONFIG)
+
+define Build/Compile
+	+$(MAKE) $(PKG_JOBS) -C "$(LINUX_DIR)" \
+		$(MAKE_OPTS) \
+		modules
+endef
+
+$(eval $(call KernelPackage,rtl8821cu))

package/kernel/rtl8821cu/patches/001-use-kernel-byteorder.patch

@@ -0,0 +1,15 @@
+Fix compile problem when rtw_byteorder.h and asm/byteorder.h gets 
+included in addition for example indirectly, do not use realtek own copy 
+of the byteorder headers.
+
+--- a/include/drv_types.h
++++ b/include/drv_types.h
+@@ -25,7 +25,7 @@
+ #include <drv_conf.h>
+ #include <basic_types.h>
+ #include <osdep_service.h>
+-#include <rtw_byteorder.h>
++#include <asm/byteorder.h>
+ #include <wlan_bssdef.h>
+ #include <wifi.h>
+ #include <ieee80211.h>

package/kernel/rtl8821cu/patches/010-remove-extra-cflags.patch

@@ -0,0 +1,11 @@
+--- a/Makefile
++++ b/Makefile
+@@ -2103,8 +2103,6 @@ ifeq ($(ARCH), i386)
+ EXTRA_CFLAGS += -mhard-float
+ else ifeq ($(ARCH), x86_64)
+ EXTRA_CFLAGS += -mhard-float
+-else ifeq ($(ARCH), arm)
+-EXTRA_CFLAGS += -mfloat-abi=hard
+ endif
+ 
+ ifeq ($(CONFIG_MULTIDRV), y)

package/kernel/rtl8821cu/patches/020-remove-repeat-flies.patch

@@ -0,0 +1,39 @@
+From 9b2b0ec1bc2d31ddf93ed74d63fdfa6044e329a4 Mon Sep 17 00:00:00 2001
+From: Ben Greear <greearb@candelatech.com>
+Date: Fri, 9 Nov 2018 16:21:43 -0800
+Subject: [PATCH] Fix build against openwrt backports tree.
+
+Like breaks builds elsewhere, can fix it up later.
+
+Signed-off-by: Ben Greear <greearb@candelatech.com>
+---
+ include/drv_conf.h                            |  4 +++-
+ .../{wireless.h => old_unused_rtl_wireless.h} |  0
+ include/{autoconf.h => rtl_autoconf.h}        |  0
+ 3 files changed, 3 insertions(+), 1 deletions(-)
+ rename include/linux/{wireless.h => old_unused_rtl_wireless.h} (100%)
+ rename include/{autoconf.h => rtl_autoconf.h} (100%)
+
+diff --git a/include/drv_conf.h b/include/drv_conf.h
+index 0d20a7e..f0a9f88 100644
+--- a/include/drv_conf.h
++++ b/include/drv_conf.h
+@@ -14,7 +14,9 @@
+  *****************************************************************************/
+ #ifndef __DRV_CONF_H__
+ #define __DRV_CONF_H__
+-#include "autoconf.h"
++
++#include <generated/autoconf.h>
++#include "rtl_autoconf.h"
+ #include "hal_ic_cfg.h"
+ 
+ #if defined(PLATFORM_LINUX) && defined (PLATFORM_WINDOWS)
+diff --git a/include/linux/wireless.h b/include/linux/old_unused_rtl_wireless.h
+similarity index 100%
+rename from include/linux/wireless.h
+rename to include/linux/old_unused_rtl_wireless.h
+diff --git a/include/autoconf.h b/include/rtl_autoconf.h
+similarity index 100%
+rename from include/autoconf.h
+rename to include/rtl_autoconf.h

package/kernel/rtl8821cu/patches/030-change-value-of-vht-enable.patch

@@ -0,0 +1,11 @@
+--- a/os_dep/linux/os_intfs.c
++++ b/os_dep/linux/os_intfs.c
+@@ -238,7 +238,7 @@
+ #endif /* CONFIG_80211N_HT */
+ 
+ #ifdef CONFIG_80211AC_VHT
+-int rtw_vht_enable = 1; /* 0:disable, 1:enable, 2:force auto enable */
++int rtw_vht_enable = 2; /* 0:disable, 1:enable, 2:force auto enable */
+ module_param(rtw_vht_enable, int, 0644);
+ 
+ int rtw_ampdu_factor = 7;

package/kernel/rtl8821cu/patches/040-wireless-5.8.patch

@@ -0,0 +1,58 @@
+diff --git a/os_dep/linux/ioctl_cfg80211.c b/os_dep/linux/ioctl_cfg80211.c
+index d9c81c9..3e7e27a 100755
+--- a/os_dep/linux/ioctl_cfg80211.c
++++ b/os_dep/linux/ioctl_cfg80211.c
+@@ -7149,7 +7149,7 @@ static void cfg80211_rtw_mgmt_frame_register(struct wiphy *wiphy,
+ #else
+ 	struct net_device *ndev,
+ #endif
+-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0)) || defined(BUILD_OPENWRT)
+ 	struct mgmt_frame_regs *upd)
+ #else
+ 	u16 frame_type, bool reg)
+@@ -7178,7 +7178,7 @@ static void cfg80211_rtw_mgmt_frame_register(struct wiphy *wiphy,
+ 	/* Wait QC Verify */
+ 	return;
+ 
+-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0)) || defined(BUILD_OPENWRT)
+ 	SET_CFG80211_REPORT_MGMT(pwdev_priv, IEEE80211_STYPE_PROBE_REQ, upd->interface_stypes & BIT(IEEE80211_STYPE_PROBE_REQ >> 4));
+ #else
+ 	switch (frame_type) {
+@@ -9467,7 +9467,7 @@ static struct cfg80211_ops rtw_cfg80211_ops = {
+ 
+ #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)) || defined(COMPAT_KERNEL_RELEASE)
+ 	.mgmt_tx = cfg80211_rtw_mgmt_tx,
+-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0)) || defined(BUILD_OPENWRT)
+ 	.update_mgmt_frame_registrations = cfg80211_rtw_mgmt_frame_register,
+ #else
+ 	.mgmt_frame_register = cfg80211_rtw_mgmt_frame_register,
+diff --git a/os_dep/linux/os_intfs.c b/os_dep/linux/os_intfs.c
+index 257c581..f97fa24 100755
+--- a/os_dep/linux/os_intfs.c
++++ b/os_dep/linux/os_intfs.c
+@@ -1302,6 +1302,14 @@ unsigned int rtw_classify8021d(struct sk_buff *skb)
+ }
+ 
+ 
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0))
++static u16 rtw_select_queue(struct net_device *dev, struct sk_buff *skb
++    , struct net_device *sb_dev
++    #if (LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0))
++    , select_queue_fallback_t fallback
++    #endif
++)
++#else
+ static u16 rtw_select_queue(struct net_device *dev, struct sk_buff *skb
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 13, 0)
+ 	, void *accel_priv
+@@ -1310,6 +1318,7 @@ static u16 rtw_select_queue(struct net_device *dev, struct sk_buff *skb
+ 	#endif
+ #endif
+ )
++#endif
+ {
+ 	_adapter	*padapter = rtw_netdev_priv(dev);
+ 	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;