lwip MicroC/OS-II throughput

I made the following changes which compiled and tested ok, but haven't done any comparative performance measurements yet.

1.) Added the following code to:

\altera\kits\nios2\components\altera_lwip\UCOSII\inc\lwipopts.h

/*

* Enable LightWeight Protection.

* Refer \altera\kits\nios2\components\altera_lwip\UCOSII\src\downloads\lwip-1.1.0\src\include\lwip\sys.h

* for changes to the SYS_ARCH_DECL_PROTECT(), SYS_ARCH_PROTECT() and

* SYS_ARCH_UNPROTECT() macros.

*/# define SYS_LIGHTWEIGHT_PROT 1

2.) Made the following changes in:

\altera\kits\nios2\components\altera_lwip\UCOSII\src\downloads\lwip-1.1.0\src\include\lwip\sys.h

/** SYS_ARCH_DECL_PROTECT

* declare a protection variable. This macro will default to defining a variable of

* type sys_prot_t. If a particular port needs a different implementation, then

* this macro may be defined in sys_arch.h.

*/

//#define SYS_ARCH_DECL_PROTECT(lev) sys_prot_t lev# define SYS_ARCH_DECL_PROTECT(lev) alt_irq_context lev

/** SYS_ARCH_PROTECT

* Perform a "fast" protect. This could be implemented by

* disabling interrupts for an embedded system or by using a semaphore or

* mutex. The implementation should allow calling SYS_ARCH_PROTECT when

* already protected. The old protection level is returned in the variable

* "lev". This macro will default to calling the sys_arch_protect() function

* which should be implemented in sys_arch.c. If a particular port needs a

* different implementation, then this macro may be defined in sys_arch.h

*/

//#define SYS_ARCH_PROTECT(lev) lev = sys_arch_protect()# define SYS_ARCH_PROTECT(lev) lev = alt_irq_disable_all()

/** SYS_ARCH_UNPROTECT

* Perform a "fast" set of the protection level to "lev". This could be

* implemented by setting the interrupt level to "lev" within the MACRO or by

* using a semaphore or mutex. This macro will default to calling the

* sys_arch_unprotect() function which should be implemented in

* sys_arch.c. If a particular port needs a different implementation, then

* this macro may be defined in sys_arch.h

*/

//#define SYS_ARCH_UNPROTECT(lev) sys_arch_unprotect(lev)# define SYS_ARCH_UNPROTECT(lev) alt_irq_enable_all(lev)

//sys_prot_t sys_arch_protect(void);

//void sys_arch_unprotect(sys_prot_t pval);

3.) Added the following include to:

\altera\kits\nios2\components\altera_lwip\UCOSII\src\downloads\lwip-1.1.0\src\core\pbuf.c

\altera\kits\nios2\components\altera_lwip\UCOSII\src\downloads\lwip-1.1.0\src\core\memp.c

# include "sys/alt_irq.h"

Not sure about any of the other tuning options, haven't got that far yet.

ciao