I'm using Kamikaze 8.09 RC2 (BRCM-2.4) and I want to use ACCEL-PPTP kernel module as PPTP client on OpenWRT.
It's good solution to increase pptp performance and decrease system usage.
How I can build this module as a package to use with OpenWRT platform?

I already integrated this module to Linux at my PC, but I need to understand how to do this for OpenWRT platform. Also, according to my information, D-link DIR-300 uses this module for the PPTP connection in the latest stock firmware.

See the 'Creating kernel modules packages' section of this doc-

http://downloads.openwrt.org/kamikaze/docs/openwrt.html

Hope this helps,
Charlie

How I can modify source files before compile package?
For example, I need to modify accel-pptp-0.8.2/kernel/driver/MakeFile :

TARGET = pptp
OBJS = pptp.o  
MDIR = net

KDIR ?= $(shell sh find_kernel_headers)
#KDIR = /usr/src/linux-2.6.24-rc1

obj-m      := $(TARGET).o
#$(TARGET)-objs      := $(OBJS)

ifneq (,$(findstring 2.4.,$(CURRENT)))
CURRENT = $(shell uname -r)
EXTRA_CFLAGS = -DEXPORT_SYMTAB
PWD = $(shell pwd)
DEST = /lib/modules/$(CURRENT)/kernel/$(MDIR)
KERNEL_INCLUDE := /lib/modules/$(CURRENT)/build/include
CC = gcc -c

Now I have compiled modules, but x86, and for host system kernel headers

How I can create and submit patches for cross-compile accel-pptp package?

Can u help me ?

Check out this example-

https://dev.openwrt.org/browser/trunk/package/madwifi

Your Makefile should have the 'KernelPackage' section defined...

define KernelPackage/madwifi
  SUBMENU:=Wireless Drivers
  TITLE:=Driver for Atheros wireless chipsets
  URL:=http://madwifi.org/
  DEPENDS:=+wireless-tools @PCI_SUPPORT||TARGET_atheros @!TARGET_ar7 @!TARGET_avr32 @!TARGET_etrax @!TARGET_uml
  FILES:=$(MADWIFI_FILES)
  AUTOLOAD:=$(call AutoLoad,50,$(MADWIFI_AUTOLOAD))
endef

...and the your patches (created with 'diff -ruN') go into the 'patches' directory.

Hope this helps,
Charlie

The current linux kernel does not include the pptp kernel driver under drivers/net. Which driver are you using for accel-pptp?

Try to use this code

Code:

define KernelPackage/madwifi
  SUBMENU:=Wireless Drivers
  TITLE:=Driver for Atheros wireless chipsets
  URL:=http://madwifi.org/
  DEPENDS:=+wireless-tools @PCI_SUPPORT||TARGET_atheros @!TARGET_ar7 @!TARGET_avr32 @!TARGET_etrax @!TARGET_uml
  FILES:=$(MADWIFI_FILES)
  AUTOLOAD:=$(call AutoLoad,50,$(MADWIFI_AUTOLOAD))
endef