This message contains instructions how to get CIPE working on the MIPS 
platform which has no module support and therefore requires it to be
put into the kernel.


From: Harris Vaegan-Lloyd <harris@unixpac.com.au>
Organization: Unixpac Pty Ltd
To: Olaf Titz <olaf@bigred.inka.de>
Subject: Re: status of cipe?

[...]
First I made the directory /usr/src/linux/net/cip3i/

and put the files..
Makefile  crc32.c   device.c  encaps.o  idea0.o   output.o
cip3i.o   crc32.o   device.o  idea0.c   output    sock.c
cipe.h    crypto.h  encaps.c  idea0.h   output.c

In there..

The Makefile contains ...
### No user-serviceable parts below here

O_OBJS    := device.o sock.o output.o encaps.o crc32.o idea0.o
O_TARGET  := cip3i.o

tar:
        tar -cvf /dev/f1 .
....

At the top of net/Makefile (line 35) I added ..
ifeq ($CONFIG_CIPE),y)
SUB_DIRS += cip3i
endif

line 1156 of net/ipv4/af_inet.c I added ..

  /*
         * Initialise the cipe driver.
         */
#ifdef CONFIG_CIPE
        cipe_init();
#endif
int cipe_init(void)
{
    int i;

    cipe_maxdev=8;

#ifdef 1
    printk(KERN_INFO
           DEVNAME ": CIPE driver vers %s (c) Olaf Titz 1996-1998, %d
channels,
debug=%d\n",
           driver_version, cipe_maxdev, cipe_debug);
#else
    printk(KERN_INFO
           DEVNAME ": CIPE driver vers %s (c) Olaf Titz 1996-1998, %d
channels\n",
           driver_version, cipe_maxdev);
#endif

    prnseed=~jiffies;
    cipe_ctrls = (struct cipe_ctrl **)
kmalloc(sizeof(void*)*cipe_maxdev,
                                               GFP_KERNEL);
    if (!cipe_ctrls) {
        printk(KERN_ERR
               DEVNAME ": failed to allocate master control
structure\n");
        return -ENOMEM;
    }
    memset(cipe_ctrls, 0, sizeof(void*)*cipe_maxdev);
    for (i=0; i<cipe_maxdev; ++i)
        if (cipe_alloc(i)<0)
            return -ENOMEM;
    return 0;
}


(cipe_init was adapted from cipe_module_init I think..)

I specified the cipe_debug and cipe_maxdev values my hand in there. It
minimal debugging and 8 devices.

There should be some stuff in the net/cip3i/config.in as well if you're
using make config or make menuconfig.. But the MIPS port doesn't have
such niceties ;). so I just added CONFIG_CIPE=y to the .config file. (Or
the arch/mips/defconfig).

Some include had to be changed as well (Just the usual ones for glibc)
then all was fine. In fact it worked the first time I tried it without
any spelling mistakes in it..
[...]