wanrouter: delete now orphaned header content, files/drivers

The wanrouter support was identified earlier as unused for years,
and so the previous commit totally decoupled it from the kernel,
leaving the related wanrouter files present, but totally inert.

Here we take the final step in that cleanup, by doing a wholesale
removal of these files. The two step process is used so that the
large deletion is decoupled from the git history of files that we
still care about.

The drivers deleted here all were dependent on the Kconfig setting
CONFIG_WAN_ROUTER_DRIVERS.

A stub wanrouter.h header (kernel & uapi) are left behind so that
drivers/isdn/i4l/isdn_x25iface.c continues to compile, and so that
we don't accidentally break userspace that expected these defines.

Cc: Joe Perches <[e-mail]>
Cc: Dan Carpenter <[e-mail]>
Cc: Arnaldo Carvalho de Melo <[e-mail]>
Signed-off-by: Paul Gortmaker <[e-mail]>

drivers/net/wan/cycx_drv.c

···
-/*
-* cycx_drv.c	Cyclom 2X Support Module.
-*
-*		This module is a library of common hardware specific
-*		functions used by the Cyclades Cyclom 2X sync card.
-*
-* Author:	Arnaldo Carvalho de Melo <[e-mail]>
-*
-* Copyright:	(c) 1998-2003 Arnaldo Carvalho de Melo
-*
-* Based on sdladrv.c by Gene Kozin <[e-mail]>
-*
-*		This program is free software; you can redistribute it and/or
-*		modify it under the terms of the GNU General Public License
-*		as published by the Free Software Foundation; either version
-*		2 of the License, or (at your option) any later version.
-* ============================================================================
-* 1999/11/11	acme		set_current_state(TASK_INTERRUPTIBLE), code
-*				cleanup
-* 1999/11/08	acme		init_cyc2x deleted, doing nothing
-* 1999/11/06	acme		back to read[bw], write[bw] and memcpy_to and
-*				fromio to use dpmbase ioremaped
-* 1999/10/26	acme		use isa_read[bw], isa_write[bw] & isa_memcpy_to
-*				& fromio
-* 1999/10/23	acme		cleanup to only supports cyclom2x: all the other
-*				boards are no longer manufactured by cyclades,
-*				if someone wants to support them... be my guest!
-* 1999/05/28    acme		cycx_intack & cycx_intde gone for good
-* 1999/05/18	acme		lots of unlogged work, submitting to Linus...
-* 1999/01/03	acme		more judicious use of data types
-* 1999/01/03	acme		judicious use of data types :>
-*				cycx_inten trying to reset pending interrupts
-*				from cyclom 2x - I think this isn't the way to
-*				go, but for now...
-* 1999/01/02	acme		cycx_intack ok, I think there's nothing to do
-*				to ack an int in cycx_drv.c, only handle it in
-*				cyx_isr (or in the other protocols: cyp_isr,
-*				cyf_isr, when they get implemented.
-* Dec 31, 1998	acme		cycx_data_boot & cycx_code_boot fixed, crossing
-*				fingers to see x25_configure in cycx_x25.c
-*				work... :)
-* Dec 26, 1998	acme		load implementation fixed, seems to work! :)
-*				cycx_2x_dpmbase_options with all the possible
-*				DPM addresses (20).
-*				cycx_intr implemented (test this!)
-*				general code cleanup
-* Dec  8, 1998	Ivan Passos	Cyclom-2X firmware load implementation.
-* Aug  8, 1998	acme		Initial version.
-*/
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>		/* __init */
-#include <linux/module.h>
-#include <linux/kernel.h>	/* printk(), and other useful stuff */
-#include <linux/stddef.h>	/* offsetof(), etc. */
-#include <linux/errno.h>	/* return codes */
-#include <linux/cycx_drv.h>	/* API definitions */
-#include <linux/cycx_cfm.h>	/* CYCX firmware module definitions */
-#include <linux/delay.h>	/* udelay, msleep_interruptible */
-#include <asm/io.h>		/* read[wl], write[wl], ioremap, iounmap */
-
-#define	MOD_VERSION	0
-#define	MOD_RELEASE	6
-
-MODULE_AUTHOR("Arnaldo Carvalho de Melo");
-MODULE_DESCRIPTION("Cyclom 2x Sync Card Driver");
-MODULE_LICENSE("GPL");
-
-/* Hardware-specific functions */
-static int load_cyc2x(struct cycx_hw *hw, struct cycx_firmware *cfm, u32 len);
-static void cycx_bootcfg(struct cycx_hw *hw);
-
-static int reset_cyc2x(void __iomem *addr);
-static int detect_cyc2x(void __iomem *addr);
-
-/* Miscellaneous functions */
-static int get_option_index(const long *optlist, long optval);
-static u16 checksum(u8 *buf, u32 len);
-
-#define wait_cyc(addr) cycx_exec(addr + CMD_OFFSET)
-
-/* Global Data */
-
-/* private data */
-static const char fullname[] = "Cyclom 2X Support Module";
-static const char copyright[] =
-	"(c) 1998-2003 Arnaldo Carvalho de Melo <[e-mail]>";
-
-/* Hardware configuration options.
- * These are arrays of configuration options used by verification routines.
- * The first element of each array is its size (i.e. number of options).
- */
-static const long cyc2x_dpmbase_options[] = {
-	20,
-	0xA0000, 0xA4000, 0xA8000, 0xAC000, 0xB0000, 0xB4000, 0xB8000,
-	0xBC000, 0xC0000, 0xC4000, 0xC8000, 0xCC000, 0xD0000, 0xD4000,
-	0xD8000, 0xDC000, 0xE0000, 0xE4000, 0xE8000, 0xEC000
-};
-
-static const long cycx_2x_irq_options[]  = { 7, 3, 5, 9, 10, 11, 12, 15 };
-
-/* Kernel Loadable Module Entry Points */
-/* Module 'insert' entry point.
- * o print announcement
- * o initialize static data
- *
- * Return:	0	Ok
- *		< 0	error.
- * Context:	process */
-
-static int __init cycx_drv_init(void)
-{
-	pr_info("%s v%u.%u %s\n",
-		fullname, MOD_VERSION, MOD_RELEASE, copyright);
-
-	return 0;
-}
-
-/* Module 'remove' entry point.
- * o release all remaining system resources */
-static void cycx_drv_cleanup(void)
-{
-}
-
-/* Kernel APIs */
-/* Set up adapter.
- * o detect adapter type
- * o verify hardware configuration options
- * o check for hardware conflicts
- * o set up adapter shared memory
- * o test adapter memory
- * o load firmware
- * Return:	0	ok.
- *		< 0	error */
-EXPORT_SYMBOL(cycx_setup);
-int cycx_setup(struct cycx_hw *hw, void *cfm, u32 len, unsigned long dpmbase)
-{
-	int err;
-
-	/* Verify IRQ configuration options */
-	if (!get_option_index(cycx_2x_irq_options, hw->irq)) {
-		pr_err("IRQ %d is invalid!\n", hw->irq);
-		return -EINVAL;
-	}
-
-	/* Setup adapter dual-port memory window and test memory */
-	if (!dpmbase) {
-		pr_err("you must specify the dpm address!\n");
- 		return -EINVAL;
-	} else if (!get_option_index(cyc2x_dpmbase_options, dpmbase)) {
-		pr_err("memory address 0x%lX is invalid!\n", dpmbase);
-		return -EINVAL;
-	}
-
-	hw->dpmbase = ioremap(dpmbase, CYCX_WINDOWSIZE);
-	hw->dpmsize = CYCX_WINDOWSIZE;
-
-	if (!detect_cyc2x(hw->dpmbase)) {
-		pr_err("adapter Cyclom 2X not found at address 0x%lX!\n",
-		       dpmbase);
-		return -EINVAL;
-	}
-
-	pr_info("found Cyclom 2X card at address 0x%lX\n", dpmbase);
-
-	/* Load firmware. If loader fails then shut down adapter */
-	err = load_cyc2x(hw, cfm, len);
-
-	if (err)
-		cycx_down(hw);         /* shutdown adapter */
-
-	return err;
-}
-
-EXPORT_SYMBOL(cycx_down);
-int cycx_down(struct cycx_hw *hw)
-{
-	iounmap(hw->dpmbase);
-	return 0;
-}
-
-/* Enable interrupt generation.  */
-static void cycx_inten(struct cycx_hw *hw)
-{
-	writeb(0, hw->dpmbase);
-}
-
-/* Generate an interrupt to adapter's CPU. */
-EXPORT_SYMBOL(cycx_intr);
-void cycx_intr(struct cycx_hw *hw)
-{
-	writew(0, hw->dpmbase + GEN_CYCX_INTR);
-}
-
-/* Execute Adapter Command.
- * o Set exec flag.
- * o Busy-wait until flag is reset. */
-EXPORT_SYMBOL(cycx_exec);
-int cycx_exec(void __iomem *addr)
-{
-	u16 i = 0;
-	/* wait till addr content is zeroed */
-
-	while (readw(addr)) {
-		udelay(1000);
-
-		if (++i > 50)
-			return -1;
-	}
-
-	return 0;
-}
-
-/* Read absolute adapter memory.
- * Transfer data from adapter's memory to data buffer. */
-EXPORT_SYMBOL(cycx_peek);
-int cycx_peek(struct cycx_hw *hw, u32 addr, void *buf, u32 len)
-{
-	if (len == 1)
-		*(u8*)buf = readb(hw->dpmbase + addr);
-	else
-		memcpy_fromio(buf, hw->dpmbase + addr, len);
-
-	return 0;
-}
-
-/* Write Absolute Adapter Memory.
- * Transfer data from data buffer to adapter's memory. */
-EXPORT_SYMBOL(cycx_poke);
-int cycx_poke(struct cycx_hw *hw, u32 addr, void *buf, u32 len)
-{
-	if (len == 1)
-		writeb(*(u8*)buf, hw->dpmbase + addr);
-	else
-		memcpy_toio(hw->dpmbase + addr, buf, len);
-
-	return 0;
-}
-
-/* Hardware-Specific Functions */
-
-/* Load Aux Routines */
-/* Reset board hardware.
-   return 1 if memory exists at addr and 0 if not. */
-static int memory_exists(void __iomem *addr)
-{
-	int tries = 0;
-
-	for (; tries < 3 ; tries++) {
-		writew(TEST_PATTERN, addr + 0x10);
-
-		if (readw(addr + 0x10) == TEST_PATTERN)
-			if (readw(addr + 0x10) == TEST_PATTERN)
-				return 1;
-
-		msleep_interruptible(1 * 1000);
-	}
-
-	return 0;
-}
-
-/* Load reset code. */
-static void reset_load(void __iomem *addr, u8 *buffer, u32 cnt)
-{
-	void __iomem *pt_code = addr + RESET_OFFSET;
-	u16 i; /*, j; */
-
-	for (i = 0 ; i < cnt ; i++) {
-/*		for (j = 0 ; j < 50 ; j++); Delay - FIXME busy waiting... */
-		writeb(*buffer++, pt_code++);
-	}
-}
-
-/* Load buffer using boot interface.
- * o copy data from buffer to Cyclom-X memory
- * o wait for reset code to copy it to right portion of memory */
-static int buffer_load(void __iomem *addr, u8 *buffer, u32 cnt)
-{
-	memcpy_toio(addr + DATA_OFFSET, buffer, cnt);
-	writew(GEN_BOOT_DAT, addr + CMD_OFFSET);
-
-	return wait_cyc(addr);
-}
-
-/* Set up entry point and kick start Cyclom-X CPU. */
-static void cycx_start(void __iomem *addr)
-{
-	/* put in 0x30 offset the jump instruction to the code entry point */
-	writeb(0xea, addr + 0x30);
-	writeb(0x00, addr + 0x31);
-	writeb(0xc4, addr + 0x32);
-	writeb(0x00, addr + 0x33);
-	writeb(0x00, addr + 0x34);
-
-	/* cmd to start executing code */
-	writew(GEN_START, addr + CMD_OFFSET);
-}
-
-/* Load and boot reset code. */
-static void cycx_reset_boot(void __iomem *addr, u8 *code, u32 len)
-{
-	void __iomem *pt_start = addr + START_OFFSET;
-
-	writeb(0xea, pt_start++); /* jmp to f000:3f00 */
-	writeb(0x00, pt_start++);
-	writeb(0xfc, pt_start++);
-	writeb(0x00, pt_start++);
-	writeb(0xf0, pt_start);
-	reset_load(addr, code, len);
-
-	/* 80186 was in hold, go */
-	writeb(0, addr + START_CPU);
-	msleep_interruptible(1 * 1000);
-}
-
-/* Load data.bin file through boot (reset) interface. */
-static int cycx_data_boot(void __iomem *addr, u8 *code, u32 len)
-{
-	void __iomem *pt_boot_cmd = addr + CMD_OFFSET;
-	u32 i;
-
-	/* boot buffer length */
-	writew(CFM_LOAD_BUFSZ, pt_boot_cmd + sizeof(u16));
-	writew(GEN_DEFPAR, pt_boot_cmd);
-
-	if (wait_cyc(addr) < 0)
-		return -1;
-
-	writew(0, pt_boot_cmd + sizeof(u16));
-	writew(0x4000, pt_boot_cmd + 2 * sizeof(u16));
-	writew(GEN_SET_SEG, pt_boot_cmd);
-
-	if (wait_cyc(addr) < 0)
-		return -1;
-
-	for (i = 0 ; i < len ; i += CFM_LOAD_BUFSZ)
-		if (buffer_load(addr, code + i,
-				min_t(u32, CFM_LOAD_BUFSZ, (len - i))) < 0) {
-			pr_err("Error !!\n");
-			return -1;
-		}
-
-	return 0;
-}
-
-
-/* Load code.bin file through boot (reset) interface. */
-static int cycx_code_boot(void __iomem *addr, u8 *code, u32 len)
-{
-	void __iomem *pt_boot_cmd = addr + CMD_OFFSET;
-	u32 i;
-
-	/* boot buffer length */
-	writew(CFM_LOAD_BUFSZ, pt_boot_cmd + sizeof(u16));
-	writew(GEN_DEFPAR, pt_boot_cmd);
-
-	if (wait_cyc(addr) < 0)
-		return -1;
-
-	writew(0x0000, pt_boot_cmd + sizeof(u16));
-	writew(0xc400, pt_boot_cmd + 2 * sizeof(u16));
-	writew(GEN_SET_SEG, pt_boot_cmd);
-
-	if (wait_cyc(addr) < 0)
-		return -1;
-
-	for (i = 0 ; i < len ; i += CFM_LOAD_BUFSZ)
-		if (buffer_load(addr, code + i,
-				min_t(u32, CFM_LOAD_BUFSZ, (len - i)))) {
-			pr_err("Error !!\n");
-			return -1;
-		}
-
-	return 0;
-}
-
-/* Load adapter from the memory image of the CYCX firmware module.
- * o verify firmware integrity and compatibility
- * o start adapter up */
-static int load_cyc2x(struct cycx_hw *hw, struct cycx_firmware *cfm, u32 len)
-{
-	int i, j;
-	struct cycx_fw_header *img_hdr;
-	u8 *reset_image,
-	   *data_image,
-	   *code_image;
-	void __iomem *pt_cycld = hw->dpmbase + 0x400;
-	u16 cksum;
-
-	/* Announce */
-	pr_info("firmware signature=\"%s\"\n", cfm->signature);
-
-	/* Verify firmware signature */
-	if (strcmp(cfm->signature, CFM_SIGNATURE)) {
-		pr_err("load_cyc2x: not Cyclom-2X firmware!\n");
-		return -EINVAL;
-	}
-
-	pr_info("firmware version=%u\n", cfm->version);
-
-	/* Verify firmware module format version */
-	if (cfm->version != CFM_VERSION) {
-		pr_err("%s: firmware format %u rejected! Expecting %u.\n",
-		       __func__, cfm->version, CFM_VERSION);
-		return -EINVAL;
-	}
-
-	/* Verify firmware module length and checksum */
-	cksum = checksum((u8*)&cfm->info, sizeof(struct cycx_fw_info) +
-					  cfm->info.codesize);
-/*
-	FIXME cfm->info.codesize is off by 2
-	if (((len - sizeof(struct cycx_firmware) - 1) != cfm->info.codesize) ||
-*/
-	if (cksum != cfm->checksum) {
-		pr_err("%s: firmware corrupted!\n", __func__);
-		pr_err(" cdsize = 0x%x (expected 0x%lx)\n",
-		       len - (int)sizeof(struct cycx_firmware) - 1,
-		       cfm->info.codesize);
-		pr_err(" chksum = 0x%x (expected 0x%x)\n",
-		       cksum, cfm->checksum);
-		return -EINVAL;
-	}
-
-	/* If everything is ok, set reset, data and code pointers */
-	img_hdr = (struct cycx_fw_header *)&cfm->image;
-#ifdef FIRMWARE_DEBUG
-	pr_info("%s: image sizes\n", __func__);
-	pr_info(" reset=%lu\n", img_hdr->reset_size);
-	pr_info("  data=%lu\n", img_hdr->data_size);
-	pr_info("  code=%lu\n", img_hdr->code_size);
-#endif
-	reset_image = ((u8 *)img_hdr) + sizeof(struct cycx_fw_header);
-	data_image = reset_image + img_hdr->reset_size;
-	code_image = data_image + img_hdr->data_size;
-
-	/*---- Start load ----*/
-	/* Announce */
-	pr_info("loading firmware %s (ID=%u)...\n",
-		cfm->descr[0] ? cfm->descr : "unknown firmware",
-		cfm->info.codeid);
-
-	for (i = 0 ; i < 5 ; i++) {
-		/* Reset Cyclom hardware */
-		if (!reset_cyc2x(hw->dpmbase)) {
-			pr_err("dpm problem or board not found\n");
-			return -EINVAL;
-		}
-
-		/* Load reset.bin */
-		cycx_reset_boot(hw->dpmbase, reset_image, img_hdr->reset_size);
-		/* reset is waiting for boot */
-		writew(GEN_POWER_ON, pt_cycld);
-		msleep_interruptible(1 * 1000);
-
-		for (j = 0 ; j < 3 ; j++)
-			if (!readw(pt_cycld))
-				goto reset_loaded;
-			else
-				msleep_interruptible(1 * 1000);
-	}
-
-	pr_err("reset not started\n");
-	return -EINVAL;
-
-reset_loaded:
-	/* Load data.bin */
-	if (cycx_data_boot(hw->dpmbase, data_image, img_hdr->data_size)) {
-		pr_err("cannot load data file\n");
-		return -EINVAL;
-	}
-
-	/* Load code.bin */
-	if (cycx_code_boot(hw->dpmbase, code_image, img_hdr->code_size)) {
-		pr_err("cannot load code file\n");
-		return -EINVAL;
-	}
-
-	/* Prepare boot-time configuration data */
-	cycx_bootcfg(hw);
-
-	/* kick-off CPU */
-	cycx_start(hw->dpmbase);
-
-	/* Arthur Ganzert's tip: wait a while after the firmware loading...
-	   seg abr 26 17:17:12 EST 1999 - acme */
-	msleep_interruptible(7 * 1000);
-	pr_info("firmware loaded!\n");
-
-	/* enable interrupts */
-	cycx_inten(hw);
-
-	return 0;
-}
-
-/* Prepare boot-time firmware configuration data.
- * o initialize configuration data area
-   From async.doc - V_3.4.0 - 07/18/1994
-   - As of now, only static buffers are available to the user.
-     So, the bit VD_RXDIRC must be set in 'valid'. That means that user
-     wants to use the static transmission and reception buffers. */
-static void cycx_bootcfg(struct cycx_hw *hw)
-{
-	/* use fixed buffers */
-	writeb(FIXED_BUFFERS, hw->dpmbase + CONF_OFFSET);
-}
-
-/* Detect Cyclom 2x adapter.
- *	Following tests are used to detect Cyclom 2x adapter:
- *       to be completed based on the tests done below
- *	Return 1 if detected o.k. or 0 if failed.
- *	Note:	This test is destructive! Adapter will be left in shutdown
- *		state after the test. */
-static int detect_cyc2x(void __iomem *addr)
-{
-	reset_cyc2x(addr);
-
-	return memory_exists(addr);
-}
-
-/* Miscellaneous */
-/* Get option's index into the options list.
- *	Return option's index (1 .. N) or zero if option is invalid. */
-static int get_option_index(const long *optlist, long optval)
-{
-	int i = 1;
-
-	for (; i <= optlist[0]; ++i)
-		if (optlist[i] == optval)
-			return i;
-
-	return 0;
-}
-
-/* Reset adapter's CPU. */
-static int reset_cyc2x(void __iomem *addr)
-{
-	writeb(0, addr + RST_ENABLE);
-	msleep_interruptible(2 * 1000);
-	writeb(0, addr + RST_DISABLE);
-	msleep_interruptible(2 * 1000);
-
-	return memory_exists(addr);
-}
-
-/* Calculate 16-bit CRC using CCITT polynomial. */
-static u16 checksum(u8 *buf, u32 len)
-{
-	u16 crc = 0;
-	u16 mask, flag;
-
-	for (; len; --len, ++buf)
-		for (mask = 0x80; mask; mask >>= 1) {
-			flag = (crc & 0x8000);
-			crc <<= 1;
-			crc |= ((*buf & mask) ? 1 : 0);
-
-			if (flag)
-				crc ^= 0x1021;
-		}
-
-	return crc;
-}
-
-module_init(cycx_drv_init);
-module_exit(cycx_drv_cleanup);
-
-/* End */

drivers/net/wan/cycx_main.c

···
-/*
-* cycx_main.c	Cyclades Cyclom 2X WAN Link Driver. Main module.
-*
-* Author:	Arnaldo Carvalho de Melo <[e-mail]>
-*
-* Copyright:	(c) 1998-2003 Arnaldo Carvalho de Melo
-*
-* Based on sdlamain.c by Gene Kozin <[e-mail]> &
-*			 Jaspreet Singh	<[e-mail]>
-*
-*		This program is free software; you can redistribute it and/or
-*		modify it under the terms of the GNU General Public License
-*		as published by the Free Software Foundation; either version
-*		2 of the License, or (at your option) any later version.
-* ============================================================================
-* Please look at the bitkeeper changelog (or any other scm tool that ends up
-* importing bitkeeper changelog or that replaces bitkeeper in the future as
-* main tool for linux development).
-* 
-* 2001/05/09	acme		Fix MODULE_DESC for debug, .bss nitpicks,
-* 				some cleanups
-* 2000/07/13	acme		remove useless #ifdef MODULE and crap
-*				#if KERNEL_VERSION > blah
-* 2000/07/06	acme		__exit at cyclomx_cleanup
-* 2000/04/02	acme		dprintk and cycx_debug
-* 				module_init/module_exit
-* 2000/01/21	acme		rename cyclomx_open to cyclomx_mod_inc_use_count
-*				and cyclomx_close to cyclomx_mod_dec_use_count
-* 2000/01/08	acme		cleanup
-* 1999/11/06	acme		cycx_down back to life (it needs to be
-*				called to iounmap the dpmbase)
-* 1999/08/09	acme		removed references to enable_tx_int
-*				use spinlocks instead of cli/sti in
-*				cyclomx_set_state
-* 1999/05/19	acme		works directly linked into the kernel
-*				init_waitqueue_head for 2.3.* kernel
-* 1999/05/18	acme		major cleanup (polling not needed), etc
-* 1998/08/28	acme		minor cleanup (ioctls for firmware deleted)
-*				queue_task activated
-* 1998/08/08	acme		Initial version.
-*/
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/stddef.h>	/* offsetof(), etc. */
-#include <linux/errno.h>	/* return codes */
-#include <linux/string.h>	/* inline memset(), etc. */
-#include <linux/slab.h>		/* kmalloc(), kfree() */
-#include <linux/kernel.h>	/* printk(), and other useful stuff */
-#include <linux/module.h>	/* support for loadable modules */
-#include <linux/ioport.h>	/* request_region(), release_region() */
-#include <linux/wanrouter.h>	/* WAN router definitions */
-#include <linux/cyclomx.h>	/* cyclomx common user API definitions */
-#include <linux/init.h>         /* __init (when not using as a module) */
-#include <linux/interrupt.h>
-
-unsigned int cycx_debug;
-
-MODULE_AUTHOR("Arnaldo Carvalho de Melo");
-MODULE_DESCRIPTION("Cyclom 2X Sync Card Driver.");
-MODULE_LICENSE("GPL");
-module_param(cycx_debug, int, 0);
-MODULE_PARM_DESC(cycx_debug, "cyclomx debug level");
-
-/* Defines & Macros */
-
-#define	CYCX_DRV_VERSION	0	/* version number */
-#define	CYCX_DRV_RELEASE	11	/* release (minor version) number */
-#define	CYCX_MAX_CARDS		1	/* max number of adapters */
-
-#define	CONFIG_CYCX_CARDS 1
-
-/* Function Prototypes */
-
-/* WAN link driver entry points */
-static int cycx_wan_setup(struct wan_device *wandev, wandev_conf_t *conf);
-static int cycx_wan_shutdown(struct wan_device *wandev);
-
-/* Miscellaneous functions */
-static irqreturn_t cycx_isr(int irq, void *dev_id);
-
-/* Global Data
- * Note: All data must be explicitly initialized!!!
- */
-
-/* private data */
-static const char cycx_drvname[] = "cyclomx";
-static const char cycx_fullname[] = "CYCLOM 2X(tm) Sync Card Driver";
-static const char cycx_copyright[] = "(c) 1998-2003 Arnaldo Carvalho de Melo "
-			  "<[e-mail]>";
-static int cycx_ncards = CONFIG_CYCX_CARDS;
-static struct cycx_device *cycx_card_array;	/* adapter data space */
-
-/* Kernel Loadable Module Entry Points */
-
-/*
- * Module 'insert' entry point.
- * o print announcement
- * o allocate adapter data space
- * o initialize static data
- * o register all cards with WAN router
- * o calibrate Cyclom 2X shared memory access delay.
- *
- * Return:	0	Ok
- *		< 0	error.
- * Context:	process
- */
-static int __init cycx_init(void)
-{
-	int cnt, err = -ENOMEM;
-
-	pr_info("%s v%u.%u %s\n",
-		cycx_fullname, CYCX_DRV_VERSION, CYCX_DRV_RELEASE,
-		cycx_copyright);
-
-	/* Verify number of cards and allocate adapter data space */
-	cycx_ncards = min_t(int, cycx_ncards, CYCX_MAX_CARDS);
-	cycx_ncards = max_t(int, cycx_ncards, 1);
-	cycx_card_array = kcalloc(cycx_ncards, sizeof(struct cycx_device), GFP_KERNEL);
-	if (!cycx_card_array)
-		goto out;
-
-
-	/* Register adapters with WAN router */
-	for (cnt = 0; cnt < cycx_ncards; ++cnt) {
-		struct cycx_device *card = &cycx_card_array[cnt];
-		struct wan_device *wandev = &card->wandev;
-
-		sprintf(card->devname, "%s%d", cycx_drvname, cnt + 1);
-		wandev->magic    = ROUTER_MAGIC;
-		wandev->name     = card->devname;
-		wandev->private  = card;
-		wandev->setup    = cycx_wan_setup;
-		wandev->shutdown = cycx_wan_shutdown;
-		err = register_wan_device(wandev);
-
-		if (err) {
-			pr_err("%s registration failed with error %d!\n",
-			       card->devname, err);
-			break;
-		}
-	}
-
-	err = -ENODEV;
-	if (!cnt) {
-		kfree(cycx_card_array);
-		goto out;
-	}
-	err = 0;
-	cycx_ncards = cnt;	/* adjust actual number of cards */
-out:	return err;
-}
-
-/*
- * Module 'remove' entry point.
- * o unregister all adapters from the WAN router
- * o release all remaining system resources
- */
-static void __exit cycx_exit(void)
-{
-	int i = 0;
-
-	for (; i < cycx_ncards; ++i) {
-		struct cycx_device *card = &cycx_card_array[i];
-		unregister_wan_device(card->devname);
-	}
-
-	kfree(cycx_card_array);
-}
-
-/* WAN Device Driver Entry Points */
-/*
- * Setup/configure WAN link driver.
- * o check adapter state
- * o make sure firmware is present in configuration
- * o allocate interrupt vector
- * o setup Cyclom 2X hardware
- * o call appropriate routine to perform protocol-specific initialization
- *
- * This function is called when router handles ROUTER_SETUP IOCTL. The
- * configuration structure is in kernel memory (including extended data, if
- * any).
- */
-static int cycx_wan_setup(struct wan_device *wandev, wandev_conf_t *conf)
-{
-	int rc = -EFAULT;
-	struct cycx_device *card;
-	int irq;
-
-	/* Sanity checks */
-
-	if (!wandev || !wandev->private || !conf)
-		goto out;
-
-	card = wandev->private;
-	rc = -EBUSY;
-	if (wandev->state != WAN_UNCONFIGURED)
-		goto out;
-
-	rc = -EINVAL;
-	if (!conf->data_size || !conf->data) {
-		pr_err("%s: firmware not found in configuration data!\n",
-		       wandev->name);
-		goto out;
-	}
-
-	if (conf->irq <= 0) {
-		pr_err("%s: can't configure without IRQ!\n", wandev->name);
-		goto out;
-	}
-
-	/* Allocate IRQ */
-	irq = conf->irq == 2 ? 9 : conf->irq;	/* IRQ2 -> IRQ9 */
-
-	if (request_irq(irq, cycx_isr, 0, wandev->name, card)) {
-		pr_err("%s: can't reserve IRQ %d!\n", wandev->name, irq);
-		goto out;
-	}
-
-	/* Configure hardware, load firmware, etc. */
-	memset(&card->hw, 0, sizeof(card->hw));
-	card->hw.irq	 = irq;
-	card->hw.dpmsize = CYCX_WINDOWSIZE;
-	card->hw.fwid	 = CFID_X25_2X;
-	spin_lock_init(&card->lock);
-	init_waitqueue_head(&card->wait_stats);
-
-	rc = cycx_setup(&card->hw, conf->data, conf->data_size, conf->maddr);
-	if (rc)
-		goto out_irq;
-
-	/* Initialize WAN device data space */
-	wandev->irq       = irq;
-	wandev->dma       = wandev->ioport = 0;
-	wandev->maddr     = (unsigned long)card->hw.dpmbase;
-	wandev->msize     = card->hw.dpmsize;
-	wandev->hw_opt[2] = 0;
-	wandev->hw_opt[3] = card->hw.fwid;
-
-	/* Protocol-specific initialization */
-	switch (card->hw.fwid) {
-#ifdef CONFIG_CYCLOMX_X25
-	case CFID_X25_2X:
-		rc = cycx_x25_wan_init(card, conf);
-		break;
-#endif
-	default:
-		pr_err("%s: this firmware is not supported!\n", wandev->name);
-		rc = -EINVAL;
-	}
-
-	if (rc) {
-		cycx_down(&card->hw);
-		goto out_irq;
-	}
-
-	rc = 0;
-out:
-	return rc;
-out_irq:
-	free_irq(irq, card);
-	goto out;
-}
-
-/*
- * Shut down WAN link driver.
- * o shut down adapter hardware
- * o release system resources.
- *
- * This function is called by the router when device is being unregistered or
- * when it handles ROUTER_DOWN IOCTL.
- */
-static int cycx_wan_shutdown(struct wan_device *wandev)
-{
-	int ret = -EFAULT;
-	struct cycx_device *card;
-
-	/* sanity checks */
-	if (!wandev || !wandev->private)
-		goto out;
-
-	ret = 0;
-	if (wandev->state == WAN_UNCONFIGURED)
-		goto out;
-
-	card = wandev->private;
-	wandev->state = WAN_UNCONFIGURED;
-	cycx_down(&card->hw);
-	pr_info("%s: irq %d being freed!\n", wandev->name, wandev->irq);
-	free_irq(wandev->irq, card);
-out:	return ret;
-}
-
-/* Miscellaneous */
-/*
- * Cyclom 2X Interrupt Service Routine.
- * o acknowledge Cyclom 2X hardware interrupt.
- * o call protocol-specific interrupt service routine, if any.
- */
-static irqreturn_t cycx_isr(int irq, void *dev_id)
-{
-	struct cycx_device *card = dev_id;
-
-	if (card->wandev.state == WAN_UNCONFIGURED)
-		goto out;
-
-	if (card->in_isr) {
-		pr_warn("%s: interrupt re-entrancy on IRQ %d!\n",
-			card->devname, card->wandev.irq);
-		goto out;
-	}
-
-	if (card->isr)
-		card->isr(card);
-	return IRQ_HANDLED;
-out:
-	return IRQ_NONE;
-}
-
-/* Set WAN device state.  */
-void cycx_set_state(struct cycx_device *card, int state)
-{
-	unsigned long flags;
-	char *string_state = NULL;
-
-	spin_lock_irqsave(&card->lock, flags);
-
-	if (card->wandev.state != state) {
-		switch (state) {
-		case WAN_CONNECTED:
-			string_state = "connected!";
-			break;
-		case WAN_DISCONNECTED:
-			string_state = "disconnected!";
-			break;
-		}
-		pr_info("%s: link %s\n", card->devname, string_state);
-		card->wandev.state = state;
-	}
-
-	card->state_tick = jiffies;
-	spin_unlock_irqrestore(&card->lock, flags);
-}
-
-module_init(cycx_init);
-module_exit(cycx_exit);

drivers/net/wan/cycx_x25.c

···
-/*
-* cycx_x25.c	Cyclom 2X WAN Link Driver.  X.25 module.
-*
-* Author:	Arnaldo Carvalho de Melo <[e-mail]>
-*
-* Copyright:	(c) 1998-2003 Arnaldo Carvalho de Melo
-*
-* Based on sdla_x25.c by Gene Kozin <[e-mail]>
-*
-*		This program is free software; you can redistribute it and/or
-*		modify it under the terms of the GNU General Public License
-*		as published by the Free Software Foundation; either version
-*		2 of the License, or (at your option) any later version.
-* ============================================================================
-* 2001/01/12	acme		use dev_kfree_skb_irq on interrupt context
-* 2000/04/02	acme		dprintk, cycx_debug
-* 				fixed the bug introduced in get_dev_by_lcn and
-* 				get_dev_by_dte_addr by the anonymous hacker
-* 				that converted this driver to softnet
-* 2000/01/08	acme		cleanup
-* 1999/10/27	acme		use ARPHRD_HWX25 so that the X.25 stack know
-*				that we have a X.25 stack implemented in
-*				firmware onboard
-* 1999/10/18	acme		support for X.25 sockets in if_send,
-*				beware: socket(AF_X25...) IS WORK IN PROGRESS,
-*				TCP/IP over X.25 via wanrouter not affected,
-*				working.
-* 1999/10/09	acme		chan_disc renamed to chan_disconnect,
-* 				began adding support for X.25 sockets:
-* 				conf->protocol in new_if
-* 1999/10/05	acme		fixed return E... to return -E...
-* 1999/08/10	acme		serialized access to the card thru a spinlock
-*				in x25_exec
-* 1999/08/09	acme		removed per channel spinlocks
-*				removed references to enable_tx_int
-* 1999/05/28	acme		fixed nibble_to_byte, ackvc now properly treated
-*				if_send simplified
-* 1999/05/25	acme		fixed t1, t2, t21 & t23 configuration
-*				use spinlocks instead of cli/sti in some points
-* 1999/05/24	acme		finished the x25_get_stat function
-* 1999/05/23	acme		dev->type = ARPHRD_X25 (tcpdump only works,
-*				AFAIT, with ARPHRD_ETHER). This seems to be
-*				needed to use socket(AF_X25)...
-*				Now the config file must specify a peer media
-*				address for svc channels over a crossover cable.
-*				Removed hold_timeout from x25_channel_t,
-*				not used.
-*				A little enhancement in the DEBUG processing
-* 1999/05/22	acme		go to DISCONNECTED in disconnect_confirm_intr,
-*				instead of chan_disc.
-* 1999/05/16	marcelo		fixed timer initialization in SVCs
-* 1999/01/05	acme		x25_configure now get (most of) all
-*				parameters...
-* 1999/01/05	acme		pktlen now (correctly) uses log2 (value
-*				configured)
-* 1999/01/03	acme		judicious use of data types (u8, u16, u32, etc)
-* 1999/01/03	acme		cyx_isr: reset dpmbase to acknowledge
-*				indication (interrupt from cyclom 2x)
-* 1999/01/02	acme		cyx_isr: first hackings...
-* 1999/01/0203  acme 		when initializing an array don't give less
-*				elements than declared...
-* 				example: char send_cmd[6] = "?\xFF\x10";
-*          			you'll gonna lose a couple hours, 'cause your
-*				brain won't admit that there's an error in the
-*				above declaration...  the side effect is that
-*				memset is put into the unresolved symbols
-*				instead of using the inline memset functions...
-* 1999/01/02    acme 		began chan_connect, chan_send, x25_send
-* 1998/12/31	acme		x25_configure
-*				this code can be compiled as non module
-* 1998/12/27	acme		code cleanup
-*				IPX code wiped out! let's decrease code
-*				complexity for now, remember: I'm learning! :)
-*                               bps_to_speed_code OK
-* 1998/12/26	acme		Minimal debug code cleanup
-* 1998/08/08	acme		Initial version.
-*/
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#define CYCLOMX_X25_DEBUG 1
-
-#include <linux/ctype.h>	/* isdigit() */
-#include <linux/errno.h>	/* return codes */
-#include <linux/if_arp.h>       /* ARPHRD_HWX25 */
-#include <linux/kernel.h>	/* printk(), and other useful stuff */
-#include <linux/module.h>
-#include <linux/string.h>	/* inline memset(), etc. */
-#include <linux/sched.h>
-#include <linux/slab.h>		/* kmalloc(), kfree() */
-#include <linux/stddef.h>	/* offsetof(), etc. */
-#include <linux/wanrouter.h>	/* WAN router definitions */
-
-#include <asm/byteorder.h>	/* htons(), etc. */
-
-#include <linux/cyclomx.h>	/* Cyclom 2X common user API definitions */
-#include <linux/cycx_x25.h>	/* X.25 firmware API definitions */
-
-#include <net/x25device.h>
-
-/* Defines & Macros */
-#define CYCX_X25_MAX_CMD_RETRY 5
-#define CYCX_X25_CHAN_MTU 2048	/* unfragmented logical channel MTU */
-
-/* Data Structures */
-/* This is an extension of the 'struct net_device' we create for each network
-   interface to keep the rest of X.25 channel-specific data. */
-struct cycx_x25_channel {
-	/* This member must be first. */
-	struct net_device *slave;	/* WAN slave */
-
-	char name[WAN_IFNAME_SZ+1];	/* interface name, ASCIIZ */
-	char addr[WAN_ADDRESS_SZ+1];	/* media address, ASCIIZ */
-	char *local_addr;		/* local media address, ASCIIZ -
-					   svc thru crossover cable */
-	s16 lcn;			/* logical channel number/conn.req.key*/
-	u8 link;
-	struct timer_list timer;	/* timer used for svc channel disc. */
-	u16 protocol;			/* ethertype, 0 - multiplexed */
-	u8 svc;				/* 0 - permanent, 1 - switched */
-	u8 state;			/* channel state */
-	u8 drop_sequence;		/* mark sequence for dropping */
-	u32 idle_tmout;			/* sec, before disconnecting */
-	struct sk_buff *rx_skb;		/* receive socket buffer */
-	struct cycx_device *card;	/* -> owner */
-	struct net_device_stats ifstats;/* interface statistics */
-};
-
-/* Function Prototypes */
-/* WAN link driver entry points. These are called by the WAN router module. */
-static int cycx_wan_update(struct wan_device *wandev),
-	   cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev,
-			   wanif_conf_t *conf),
-	   cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev);
-
-/* Network device interface */
-static int cycx_netdevice_init(struct net_device *dev);
-static int cycx_netdevice_open(struct net_device *dev);
-static int cycx_netdevice_stop(struct net_device *dev);
-static int cycx_netdevice_hard_header(struct sk_buff *skb,
-				      struct net_device *dev, u16 type,
-				      const void *daddr, const void *saddr,
-				      unsigned len);
-static int cycx_netdevice_rebuild_header(struct sk_buff *skb);
-static netdev_tx_t cycx_netdevice_hard_start_xmit(struct sk_buff *skb,
-							struct net_device *dev);
-
-static struct net_device_stats *
-			cycx_netdevice_get_stats(struct net_device *dev);
-
-/* Interrupt handlers */
-static void cycx_x25_irq_handler(struct cycx_device *card),
-	    cycx_x25_irq_tx(struct cycx_device *card, struct cycx_x25_cmd *cmd),
-	    cycx_x25_irq_rx(struct cycx_device *card, struct cycx_x25_cmd *cmd),
-	    cycx_x25_irq_log(struct cycx_device *card,
-			     struct cycx_x25_cmd *cmd),
-	    cycx_x25_irq_stat(struct cycx_device *card,
-			      struct cycx_x25_cmd *cmd),
-	    cycx_x25_irq_connect_confirm(struct cycx_device *card,
-					 struct cycx_x25_cmd *cmd),
-	    cycx_x25_irq_disconnect_confirm(struct cycx_device *card,
-					    struct cycx_x25_cmd *cmd),
-	    cycx_x25_irq_connect(struct cycx_device *card,
-				 struct cycx_x25_cmd *cmd),
-	    cycx_x25_irq_disconnect(struct cycx_device *card,
-				    struct cycx_x25_cmd *cmd),
-	    cycx_x25_irq_spurious(struct cycx_device *card,
-				  struct cycx_x25_cmd *cmd);
-
-/* X.25 firmware interface functions */
-static int cycx_x25_configure(struct cycx_device *card,
-			      struct cycx_x25_config *conf),
-	   cycx_x25_get_stats(struct cycx_device *card),
-	   cycx_x25_send(struct cycx_device *card, u8 link, u8 lcn, u8 bitm,
-			 int len, void *buf),
-	   cycx_x25_connect_response(struct cycx_device *card,
-				struct cycx_x25_channel *chan),
-	   cycx_x25_disconnect_response(struct cycx_device *card, u8 link,
-			   		u8 lcn);
-
-/* channel functions */
-static int cycx_x25_chan_connect(struct net_device *dev),
-	   cycx_x25_chan_send(struct net_device *dev, struct sk_buff *skb);
-
-static void cycx_x25_chan_disconnect(struct net_device *dev),
-	    cycx_x25_chan_send_event(struct net_device *dev, u8 event);
-
-/* Miscellaneous functions */
-static void cycx_x25_set_chan_state(struct net_device *dev, u8 state),
-	    cycx_x25_chan_timer(unsigned long d);
-
-static void nibble_to_byte(u8 *s, u8 *d, u8 len, u8 nibble),
-	    reset_timer(struct net_device *dev);
-
-static u8 bps_to_speed_code(u32 bps);
-static u8 cycx_log2(u32 n);
-
-static unsigned dec_to_uint(u8 *str, int len);
-
-static struct net_device *cycx_x25_get_dev_by_lcn(struct wan_device *wandev,
-						  s16 lcn);
-static struct net_device *
-	cycx_x25_get_dev_by_dte_addr(struct wan_device *wandev, char *dte);
-
-static void cycx_x25_chan_setup(struct net_device *dev);
-
-#ifdef CYCLOMX_X25_DEBUG
-static void hex_dump(char *msg, unsigned char *p, int len);
-static void cycx_x25_dump_config(struct cycx_x25_config *conf);
-static void cycx_x25_dump_stats(struct cycx_x25_stats *stats);
-static void cycx_x25_dump_devs(struct wan_device *wandev);
-#else
-#define hex_dump(msg, p, len)
-#define cycx_x25_dump_config(conf)
-#define cycx_x25_dump_stats(stats)
-#define cycx_x25_dump_devs(wandev)
-#endif
-/* Public Functions */
-
-/* X.25 Protocol Initialization routine.
- *
- * This routine is called by the main Cyclom 2X module during setup.  At this
- * point adapter is completely initialized and X.25 firmware is running.
- *  o configure adapter
- *  o initialize protocol-specific fields of the adapter data space.
- *
- * Return:	0	o.k.
- *		< 0	failure.  */
-int cycx_x25_wan_init(struct cycx_device *card, wandev_conf_t *conf)
-{
-	struct cycx_x25_config cfg;
-
-	/* Verify configuration ID */
-	if (conf->config_id != WANCONFIG_X25) {
-		pr_info("%s: invalid configuration ID %u!\n",
-			card->devname, conf->config_id);
-		return -EINVAL;
-	}
-
-	/* Initialize protocol-specific fields */
-	card->mbox  = card->hw.dpmbase + X25_MBOX_OFFS;
-	card->u.x.connection_keys = 0;
-	spin_lock_init(&card->u.x.lock);
-
-	/* Configure adapter. Here we set reasonable defaults, then parse
-	 * device configuration structure and set configuration options.
-	 * Most configuration options are verified and corrected (if
-	 * necessary) since we can't rely on the adapter to do so and don't
-	 * want it to fail either. */
-	memset(&cfg, 0, sizeof(cfg));
-	cfg.link = 0;
-	cfg.clock = conf->clocking == WANOPT_EXTERNAL ? 8 : 55;
-	cfg.speed = bps_to_speed_code(conf->bps);
-	cfg.n3win = 7;
-	cfg.n2win = 2;
-	cfg.n2 = 5;
-	cfg.nvc = 1;
-	cfg.npvc = 1;
-	cfg.flags = 0x02; /* default = V35 */
-	cfg.t1 = 10;   /* line carrier timeout */
-	cfg.t2 = 29;   /* tx timeout */
-	cfg.t21 = 180; /* CALL timeout */
-	cfg.t23 = 180; /* CLEAR timeout */
-
-	/* adjust MTU */
-	if (!conf->mtu || conf->mtu >= 512)
-		card->wandev.mtu = 512;
-	else if (conf->mtu >= 256)
-		card->wandev.mtu = 256;
-	else if (conf->mtu >= 128)
-		card->wandev.mtu = 128;
-	else
-		card->wandev.mtu = 64;
-
-	cfg.pktlen = cycx_log2(card->wandev.mtu);
-
-	if (conf->station == WANOPT_DTE) {
-		cfg.locaddr = 3; /* DTE */
-		cfg.remaddr = 1; /* DCE */
-	} else {
-		cfg.locaddr = 1; /* DCE */
-		cfg.remaddr = 3; /* DTE */
-	}
-
-	if (conf->interface == WANOPT_RS232)
-	        cfg.flags = 0;      /* FIXME just reset the 2nd bit */
-
-	if (conf->u.x25.hi_pvc) {
-		card->u.x.hi_pvc = min_t(unsigned int, conf->u.x25.hi_pvc, 4095);
-		card->u.x.lo_pvc = min_t(unsigned int, conf->u.x25.lo_pvc, card->u.x.hi_pvc);
-	}
-
-	if (conf->u.x25.hi_svc) {
-		card->u.x.hi_svc = min_t(unsigned int, conf->u.x25.hi_svc, 4095);
-		card->u.x.lo_svc = min_t(unsigned int, conf->u.x25.lo_svc, card->u.x.hi_svc);
-	}
-
-	if (card->u.x.lo_pvc == 255)
-		cfg.npvc = 0;
-	else
-		cfg.npvc = card->u.x.hi_pvc - card->u.x.lo_pvc + 1;
-
-	cfg.nvc = card->u.x.hi_svc - card->u.x.lo_svc + 1 + cfg.npvc;
-
-	if (conf->u.x25.hdlc_window)
-		cfg.n2win = min_t(unsigned int, conf->u.x25.hdlc_window, 7);
-
-	if (conf->u.x25.pkt_window)
-		cfg.n3win = min_t(unsigned int, conf->u.x25.pkt_window, 7);
-
-	if (conf->u.x25.t1)
-		cfg.t1 = min_t(unsigned int, conf->u.x25.t1, 30);
-
-	if (conf->u.x25.t2)
-		cfg.t2 = min_t(unsigned int, conf->u.x25.t2, 30);
-
-	if (conf->u.x25.t11_t21)
-		cfg.t21 = min_t(unsigned int, conf->u.x25.t11_t21, 30);
-
-	if (conf->u.x25.t13_t23)
-		cfg.t23 = min_t(unsigned int, conf->u.x25.t13_t23, 30);
-
-	if (conf->u.x25.n2)
-		cfg.n2 = min_t(unsigned int, conf->u.x25.n2, 30);
-
-	/* initialize adapter */
-	if (cycx_x25_configure(card, &cfg))
-		return -EIO;
-
-	/* Initialize protocol-specific fields of adapter data space */
-	card->wandev.bps	= conf->bps;
-	card->wandev.interface	= conf->interface;
-	card->wandev.clocking	= conf->clocking;
-	card->wandev.station	= conf->station;
-	card->isr		= cycx_x25_irq_handler;
-	card->exec		= NULL;
-	card->wandev.update	= cycx_wan_update;
-	card->wandev.new_if	= cycx_wan_new_if;
-	card->wandev.del_if	= cycx_wan_del_if;
-	card->wandev.state	= WAN_DISCONNECTED;
-
-	return 0;
-}
-
-/* WAN Device Driver Entry Points */
-/* Update device status & statistics. */
-static int cycx_wan_update(struct wan_device *wandev)
-{
-	/* sanity checks */
-	if (!wandev || !wandev->private)
-		return -EFAULT;
-
-	if (wandev->state == WAN_UNCONFIGURED)
-		return -ENODEV;
-
-	cycx_x25_get_stats(wandev->private);
-
-	return 0;
-}
-
-/* Create new logical channel.
- * This routine is called by the router when ROUTER_IFNEW IOCTL is being
- * handled.
- * o parse media- and hardware-specific configuration
- * o make sure that a new channel can be created
- * o allocate resources, if necessary
- * o prepare network device structure for registration.
- *
- * Return:	0	o.k.
- *		< 0	failure (channel will not be created) */
-static int cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev,
-			   wanif_conf_t *conf)
-{
-	struct cycx_device *card = wandev->private;
-	struct cycx_x25_channel *chan;
-	int err = 0;
-
-	if (!conf->name[0] || strlen(conf->name) > WAN_IFNAME_SZ) {
-		pr_info("%s: invalid interface name!\n", card->devname);
-		return -EINVAL;
-	}
-
-	dev = alloc_netdev(sizeof(struct cycx_x25_channel), conf->name,
-			     cycx_x25_chan_setup);
-	if (!dev)
-		return -ENOMEM;
-
-	chan = netdev_priv(dev);
-	strcpy(chan->name, conf->name);
-	chan->card = card;
-	chan->link = conf->port;
-	chan->protocol = conf->protocol ? ETH_P_X25 : ETH_P_IP;
-	chan->rx_skb = NULL;
-	/* only used in svc connected thru crossover cable */
-	chan->local_addr = NULL;
-
-	if (conf->addr[0] == '@') {	/* SVC */
-		int len = strlen(conf->local_addr);
-
-		if (len) {
-			if (len > WAN_ADDRESS_SZ) {
-				pr_err("%s: %s local addr too long!\n",
-				       wandev->name, chan->name);
-				err = -EINVAL;
-				goto error;
-			} else {
-				chan->local_addr = kmalloc(len + 1, GFP_KERNEL);
-
-				if (!chan->local_addr) {
-					err = -ENOMEM;
-					goto error;
-				}
-			}
-
-			strncpy(chan->local_addr, conf->local_addr,
-				WAN_ADDRESS_SZ);
-		}
-
-		chan->svc = 1;
-		strncpy(chan->addr, &conf->addr[1], WAN_ADDRESS_SZ);
-		init_timer(&chan->timer);
-		chan->timer.function	= cycx_x25_chan_timer;
-		chan->timer.data	= (unsigned long)dev;
-
-		/* Set channel timeouts (default if not specified) */
-		chan->idle_tmout = conf->idle_timeout ? conf->idle_timeout : 90;
-	} else if (isdigit(conf->addr[0])) {	/* PVC */
-		s16 lcn = dec_to_uint(conf->addr, 0);
-
-		if (lcn >= card->u.x.lo_pvc && lcn <= card->u.x.hi_pvc)
-			chan->lcn = lcn;
-		else {
-			pr_err("%s: PVC %u is out of range on interface %s!\n",
-			       wandev->name, lcn, chan->name);
-			err = -EINVAL;
-			goto error;
-		}
-	} else {
-		pr_err("%s: invalid media address on interface %s!\n",
-		       wandev->name, chan->name);
-		err = -EINVAL;
-		goto error;
-	}
-
-	return 0;
-
-error:
-	free_netdev(dev);
-	return err;
-}
-
-/* Delete logical channel. */
-static int cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-
-	if (chan->svc) {
-		kfree(chan->local_addr);
-		if (chan->state == WAN_CONNECTED)
-			del_timer(&chan->timer);
-	}
-
-	return 0;
-}
-
-
-/* Network Device Interface */
-
-static const struct header_ops cycx_header_ops = {
-	.create = cycx_netdevice_hard_header,
-	.rebuild = cycx_netdevice_rebuild_header,
-};
-
-static const struct net_device_ops cycx_netdev_ops = {
-	.ndo_init	= cycx_netdevice_init,
-	.ndo_open	= cycx_netdevice_open,
-	.ndo_stop	= cycx_netdevice_stop,
-	.ndo_start_xmit	= cycx_netdevice_hard_start_xmit,
-	.ndo_get_stats	= cycx_netdevice_get_stats,
-};
-
-static void cycx_x25_chan_setup(struct net_device *dev)
-{
-	/* Initialize device driver entry points */
-	dev->netdev_ops		= &cycx_netdev_ops;
-	dev->header_ops		= &cycx_header_ops;
-
-	/* Initialize media-specific parameters */
-	dev->mtu		= CYCX_X25_CHAN_MTU;
-	dev->type		= ARPHRD_HWX25;	/* ARP h/w type */
-	dev->hard_header_len	= 0;		/* media header length */
-	dev->addr_len		= 0;		/* hardware address length */
-}
-
-/* Initialize Linux network interface.
- *
- * This routine is called only once for each interface, during Linux network
- * interface registration.  Returning anything but zero will fail interface
- * registration. */
-static int cycx_netdevice_init(struct net_device *dev)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-	struct cycx_device *card = chan->card;
-	struct wan_device *wandev = &card->wandev;
-
-	if (!chan->svc)
-		*(__be16*)dev->dev_addr = htons(chan->lcn);
-
-	/* Initialize hardware parameters (just for reference) */
-	dev->irq		= wandev->irq;
-	dev->dma		= wandev->dma;
-	dev->base_addr		= wandev->ioport;
-	dev->mem_start		= (unsigned long)wandev->maddr;
-	dev->mem_end		= (unsigned long)(wandev->maddr +
-						  wandev->msize - 1);
-	dev->flags		|= IFF_NOARP;
-
-	/* Set transmit buffer queue length */
-	dev->tx_queue_len	= 10;
-
-	/* Initialize socket buffers */
-	cycx_x25_set_chan_state(dev, WAN_DISCONNECTED);
-
-	return 0;
-}
-
-/* Open network interface.
- * o prevent module from unloading by incrementing use count
- * o if link is disconnected then initiate connection
- *
- * Return 0 if O.k. or errno.  */
-static int cycx_netdevice_open(struct net_device *dev)
-{
-	if (netif_running(dev))
-		return -EBUSY; /* only one open is allowed */
-
-	netif_start_queue(dev);
-	return 0;
-}
-
-/* Close network interface.
- * o reset flags.
- * o if there's no more open channels then disconnect physical link. */
-static int cycx_netdevice_stop(struct net_device *dev)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-
-	netif_stop_queue(dev);
-
-	if (chan->state == WAN_CONNECTED || chan->state == WAN_CONNECTING)
-		cycx_x25_chan_disconnect(dev);
-
-	return 0;
-}
-
-/* Build media header.
- * o encapsulate packet according to encapsulation type.
- *
- * The trick here is to put packet type (Ethertype) into 'protocol' field of
- * the socket buffer, so that we don't forget it.  If encapsulation fails,
- * set skb->protocol to 0 and discard packet later.
- *
- * Return:	media header length. */
-static int cycx_netdevice_hard_header(struct sk_buff *skb,
-				      struct net_device *dev, u16 type,
-				      const void *daddr, const void *saddr,
-				      unsigned len)
-{
-	skb->protocol = htons(type);
-
-	return dev->hard_header_len;
-}
-
-/* * Re-build media header.
- * Return:	1	physical address resolved.
- *		0	physical address not resolved */
-static int cycx_netdevice_rebuild_header(struct sk_buff *skb)
-{
-	return 1;
-}
-
-/* Send a packet on a network interface.
- * o set busy flag (marks start of the transmission).
- * o check link state. If link is not up, then drop the packet.
- * o check channel status. If it's down then initiate a call.
- * o pass a packet to corresponding WAN device.
- * o free socket buffer
- *
- * Return:	0	complete (socket buffer must be freed)
- *		non-0	packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- *    bottom half" (with interrupts enabled).
- * 2. Setting tbusy flag will inhibit further transmit requests from the
- *    protocol stack and can be used for flow control with protocol layer. */
-static netdev_tx_t cycx_netdevice_hard_start_xmit(struct sk_buff *skb,
-							struct net_device *dev)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-	struct cycx_device *card = chan->card;
-
-	if (!chan->svc)
-		chan->protocol = ntohs(skb->protocol);
-
-	if (card->wandev.state != WAN_CONNECTED)
-		++chan->ifstats.tx_dropped;
-	else if (chan->svc && chan->protocol &&
-		 chan->protocol != ntohs(skb->protocol)) {
-		pr_info("%s: unsupported Ethertype 0x%04X on interface %s!\n",
-			card->devname, ntohs(skb->protocol), dev->name);
-		++chan->ifstats.tx_errors;
-	} else if (chan->protocol == ETH_P_IP) {
-		switch (chan->state) {
-		case WAN_DISCONNECTED:
-			if (cycx_x25_chan_connect(dev)) {
-				netif_stop_queue(dev);
-				return NETDEV_TX_BUSY;
-			}
-			/* fall thru */
-		case WAN_CONNECTED:
-			reset_timer(dev);
-			dev->trans_start = jiffies;
-			netif_stop_queue(dev);
-
-			if (cycx_x25_chan_send(dev, skb))
-				return NETDEV_TX_BUSY;
-
-			break;
-		default:
-			++chan->ifstats.tx_dropped;
-			++card->wandev.stats.tx_dropped;
-	}
-	} else { /* chan->protocol == ETH_P_X25 */
-		switch (skb->data[0]) {
-		case X25_IFACE_DATA:
-			break;
-		case X25_IFACE_CONNECT:
-			cycx_x25_chan_connect(dev);
-			goto free_packet;
-		case X25_IFACE_DISCONNECT:
-			cycx_x25_chan_disconnect(dev);
-			goto free_packet;
-	        default:
-			pr_info("%s: unknown %d x25-iface request on %s!\n",
-				card->devname, skb->data[0], dev->name);
-			++chan->ifstats.tx_errors;
-			goto free_packet;
-		}
-
-		skb_pull(skb, 1); /* Remove control byte */
-		reset_timer(dev);
-		dev->trans_start = jiffies;
-		netif_stop_queue(dev);
-
-		if (cycx_x25_chan_send(dev, skb)) {
-			/* prepare for future retransmissions */
-			skb_push(skb, 1);
-			return NETDEV_TX_BUSY;
-		}
-	}
-
-free_packet:
-	dev_kfree_skb(skb);
-
-	return NETDEV_TX_OK;
-}
-
-/* Get Ethernet-style interface statistics.
- * Return a pointer to struct net_device_stats */
-static struct net_device_stats *cycx_netdevice_get_stats(struct net_device *dev)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-
-	return chan ? &chan->ifstats : NULL;
-}
-
-/* Interrupt Handlers */
-/* X.25 Interrupt Service Routine. */
-static void cycx_x25_irq_handler(struct cycx_device *card)
-{
-	struct cycx_x25_cmd cmd;
-	u16 z = 0;
-
-	card->in_isr = 1;
-	card->buff_int_mode_unbusy = 0;
-	cycx_peek(&card->hw, X25_RXMBOX_OFFS, &cmd, sizeof(cmd));
-
-	switch (cmd.command) {
-	case X25_DATA_INDICATION:
-		cycx_x25_irq_rx(card, &cmd);
-		break;
-	case X25_ACK_FROM_VC:
-		cycx_x25_irq_tx(card, &cmd);
-		break;
-	case X25_LOG:
-		cycx_x25_irq_log(card, &cmd);
-		break;
-	case X25_STATISTIC:
-		cycx_x25_irq_stat(card, &cmd);
-		break;
-	case X25_CONNECT_CONFIRM:
-		cycx_x25_irq_connect_confirm(card, &cmd);
-		break;
-	case X25_CONNECT_INDICATION:
-		cycx_x25_irq_connect(card, &cmd);
-		break;
-	case X25_DISCONNECT_INDICATION:
-		cycx_x25_irq_disconnect(card, &cmd);
-		break;
-	case X25_DISCONNECT_CONFIRM:
-		cycx_x25_irq_disconnect_confirm(card, &cmd);
-		break;
-	case X25_LINE_ON:
-		cycx_set_state(card, WAN_CONNECTED);
-		break;
-	case X25_LINE_OFF:
-		cycx_set_state(card, WAN_DISCONNECTED);
-		break;
-	default:
-		cycx_x25_irq_spurious(card, &cmd);
-		break;
-	}
-
-	cycx_poke(&card->hw, 0, &z, sizeof(z));
-	cycx_poke(&card->hw, X25_RXMBOX_OFFS, &z, sizeof(z));
-	card->in_isr = 0;
-}
-
-/* Transmit interrupt handler.
- *	o Release socket buffer
- *	o Clear 'tbusy' flag */
-static void cycx_x25_irq_tx(struct cycx_device *card, struct cycx_x25_cmd *cmd)
-{
-	struct net_device *dev;
-	struct wan_device *wandev = &card->wandev;
-	u8 lcn;
-
-	cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn));
-
-	/* unbusy device and then dev_tint(); */
-	dev = cycx_x25_get_dev_by_lcn(wandev, lcn);
-	if (dev) {
-		card->buff_int_mode_unbusy = 1;
-		netif_wake_queue(dev);
-	} else
-		pr_err("%s:ackvc for inexistent lcn %d\n", card->devname, lcn);
-}
-
-/* Receive interrupt handler.
- * This routine handles fragmented IP packets using M-bit according to the
- * RFC1356.
- * o map logical channel number to network interface.
- * o allocate socket buffer or append received packet to the existing one.
- * o if M-bit is reset (i.e. it's the last packet in a sequence) then
- *   decapsulate packet and pass socket buffer to the protocol stack.
- *
- * Notes:
- * 1. When allocating a socket buffer, if M-bit is set then more data is
- *    coming and we have to allocate buffer for the maximum IP packet size
- *    expected on this channel.
- * 2. If something goes wrong and X.25 packet has to be dropped (e.g. no
- *    socket buffers available) the whole packet sequence must be discarded. */
-static void cycx_x25_irq_rx(struct cycx_device *card, struct cycx_x25_cmd *cmd)
-{
-	struct wan_device *wandev = &card->wandev;
-	struct net_device *dev;
-	struct cycx_x25_channel *chan;
-	struct sk_buff *skb;
-	u8 bitm, lcn;
-	int pktlen = cmd->len - 5;
-
-	cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn));
-	cycx_peek(&card->hw, cmd->buf + 4, &bitm, sizeof(bitm));
-	bitm &= 0x10;
-
-	dev = cycx_x25_get_dev_by_lcn(wandev, lcn);
-	if (!dev) {
-		/* Invalid channel, discard packet */
-		pr_info("%s: receiving on orphaned LCN %d!\n",
-			card->devname, lcn);
-		return;
-	}
-
-	chan = netdev_priv(dev);
-	reset_timer(dev);
-
-	if (chan->drop_sequence) {
-		if (!bitm)
-			chan->drop_sequence = 0;
-		else
-			return;
-	}
-
-	if ((skb = chan->rx_skb) == NULL) {
-		/* Allocate new socket buffer */
-		int bufsize = bitm ? dev->mtu : pktlen;
-
-		if ((skb = dev_alloc_skb((chan->protocol == ETH_P_X25 ? 1 : 0) +
-					 bufsize +
-					 dev->hard_header_len)) == NULL) {
-			pr_info("%s: no socket buffers available!\n",
-				card->devname);
-			chan->drop_sequence = 1;
-			++chan->ifstats.rx_dropped;
-			return;
-		}
-
-		if (chan->protocol == ETH_P_X25) /* X.25 socket layer control */
-			/* 0 = data packet (dev_alloc_skb zeroed skb->data) */
-			skb_put(skb, 1);
-
-		skb->dev = dev;
-		skb->protocol = htons(chan->protocol);
-		chan->rx_skb = skb;
-	}
-
-	if (skb_tailroom(skb) < pktlen) {
-		/* No room for the packet. Call off the whole thing! */
-		dev_kfree_skb_irq(skb);
-		chan->rx_skb = NULL;
-
-		if (bitm)
-			chan->drop_sequence = 1;
-
-		pr_info("%s: unexpectedly long packet sequence on interface %s!\n",
-			card->devname, dev->name);
-		++chan->ifstats.rx_length_errors;
-		return;
-	}
-
-	/* Append packet to the socket buffer  */
-	cycx_peek(&card->hw, cmd->buf + 5, skb_put(skb, pktlen), pktlen);
-
-	if (bitm)
-		return; /* more data is coming */
-
-	chan->rx_skb = NULL;		/* dequeue packet */
-
-	++chan->ifstats.rx_packets;
-	chan->ifstats.rx_bytes += pktlen;
-
-	skb_reset_mac_header(skb);
-	netif_rx(skb);
-}
-
-/* Connect interrupt handler. */
-static void cycx_x25_irq_connect(struct cycx_device *card,
-				 struct cycx_x25_cmd *cmd)
-{
-	struct wan_device *wandev = &card->wandev;
-	struct net_device *dev = NULL;
-	struct cycx_x25_channel *chan;
-	u8 d[32],
-	   loc[24],
-	   rem[24];
-	u8 lcn, sizeloc, sizerem;
-
-	cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn));
-	cycx_peek(&card->hw, cmd->buf + 5, &sizeloc, sizeof(sizeloc));
-	cycx_peek(&card->hw, cmd->buf + 6, d, cmd->len - 6);
-
-	sizerem = sizeloc >> 4;
-	sizeloc &= 0x0F;
-
-	loc[0] = rem[0] = '\0';
-
-	if (sizeloc)
-		nibble_to_byte(d, loc, sizeloc, 0);
-
-	if (sizerem)
-		nibble_to_byte(d + (sizeloc >> 1), rem, sizerem, sizeloc & 1);
-
-	dprintk(1, KERN_INFO "%s:lcn=%d, local=%s, remote=%s\n",
-			  __func__, lcn, loc, rem);
-
-	dev = cycx_x25_get_dev_by_dte_addr(wandev, rem);
-	if (!dev) {
-		/* Invalid channel, discard packet */
-		pr_info("%s: connect not expected: remote %s!\n",
-			card->devname, rem);
-		return;
-	}
-
-	chan = netdev_priv(dev);
-	chan->lcn = lcn;
-	cycx_x25_connect_response(card, chan);
-	cycx_x25_set_chan_state(dev, WAN_CONNECTED);
-}
-
-/* Connect confirm interrupt handler. */
-static void cycx_x25_irq_connect_confirm(struct cycx_device *card,
-					 struct cycx_x25_cmd *cmd)
-{
-	struct wan_device *wandev = &card->wandev;
-	struct net_device *dev;
-	struct cycx_x25_channel *chan;
-	u8 lcn, key;
-
-	cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn));
-	cycx_peek(&card->hw, cmd->buf + 1, &key, sizeof(key));
-	dprintk(1, KERN_INFO "%s: %s:lcn=%d, key=%d\n",
-			  card->devname, __func__, lcn, key);
-
-	dev = cycx_x25_get_dev_by_lcn(wandev, -key);
-	if (!dev) {
-		/* Invalid channel, discard packet */
-		clear_bit(--key, (void*)&card->u.x.connection_keys);
-		pr_info("%s: connect confirm not expected: lcn %d, key=%d!\n",
-			card->devname, lcn, key);
-		return;
-	}
-
-	clear_bit(--key, (void*)&card->u.x.connection_keys);
-	chan = netdev_priv(dev);
-	chan->lcn = lcn;
-	cycx_x25_set_chan_state(dev, WAN_CONNECTED);
-}
-
-/* Disconnect confirm interrupt handler. */
-static void cycx_x25_irq_disconnect_confirm(struct cycx_device *card,
-					    struct cycx_x25_cmd *cmd)
-{
-	struct wan_device *wandev = &card->wandev;
-	struct net_device *dev;
-	u8 lcn;
-
-	cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn));
-	dprintk(1, KERN_INFO "%s: %s:lcn=%d\n",
-			  card->devname, __func__, lcn);
-	dev = cycx_x25_get_dev_by_lcn(wandev, lcn);
-	if (!dev) {
-		/* Invalid channel, discard packet */
-		pr_info("%s:disconnect confirm not expected!:lcn %d\n",
-			card->devname, lcn);
-		return;
-	}
-
-	cycx_x25_set_chan_state(dev, WAN_DISCONNECTED);
-}
-
-/* disconnect interrupt handler. */
-static void cycx_x25_irq_disconnect(struct cycx_device *card,
-				    struct cycx_x25_cmd *cmd)
-{
-	struct wan_device *wandev = &card->wandev;
-	struct net_device *dev;
-	u8 lcn;
-
-	cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn));
-	dprintk(1, KERN_INFO "%s:lcn=%d\n", __func__, lcn);
-
-	dev = cycx_x25_get_dev_by_lcn(wandev, lcn);
-	if (dev) {
-		struct cycx_x25_channel *chan = netdev_priv(dev);
-
-		cycx_x25_disconnect_response(card, chan->link, lcn);
-		cycx_x25_set_chan_state(dev, WAN_DISCONNECTED);
-	} else
-		cycx_x25_disconnect_response(card, 0, lcn);
-}
-
-/* LOG interrupt handler. */
-static void cycx_x25_irq_log(struct cycx_device *card, struct cycx_x25_cmd *cmd)
-{
-#if CYCLOMX_X25_DEBUG
-	char bf[20];
-	u16 size, toread, link, msg_code;
-	u8 code, routine;
-
-	cycx_peek(&card->hw, cmd->buf, &msg_code, sizeof(msg_code));
-	cycx_peek(&card->hw, cmd->buf + 2, &link, sizeof(link));
-	cycx_peek(&card->hw, cmd->buf + 4, &size, sizeof(size));
-	/* at most 20 bytes are available... thanks to Daniela :) */
-	toread = size < 20 ? size : 20;
-	cycx_peek(&card->hw, cmd->buf + 10, &bf, toread);
-	cycx_peek(&card->hw, cmd->buf + 10 + toread, &code, 1);
-	cycx_peek(&card->hw, cmd->buf + 10 + toread + 1, &routine, 1);
-
-	pr_info("cycx_x25_irq_handler: X25_LOG (0x4500) indic.:\n");
-	pr_info("cmd->buf=0x%X\n", cmd->buf);
-	pr_info("Log message code=0x%X\n", msg_code);
-	pr_info("Link=%d\n", link);
-	pr_info("log code=0x%X\n", code);
-	pr_info("log routine=0x%X\n", routine);
-	pr_info("Message size=%d\n", size);
-	hex_dump("Message", bf, toread);
-#endif
-}
-
-/* STATISTIC interrupt handler. */
-static void cycx_x25_irq_stat(struct cycx_device *card,
-			      struct cycx_x25_cmd *cmd)
-{
-	cycx_peek(&card->hw, cmd->buf, &card->u.x.stats,
-		  sizeof(card->u.x.stats));
-	hex_dump("cycx_x25_irq_stat", (unsigned char*)&card->u.x.stats,
-		 sizeof(card->u.x.stats));
-	cycx_x25_dump_stats(&card->u.x.stats);
-	wake_up_interruptible(&card->wait_stats);
-}
-
-/* Spurious interrupt handler.
- * o print a warning
- * If number of spurious interrupts exceeded some limit, then ??? */
-static void cycx_x25_irq_spurious(struct cycx_device *card,
-				  struct cycx_x25_cmd *cmd)
-{
-	pr_info("%s: spurious interrupt (0x%X)!\n",
-		card->devname, cmd->command);
-}
-#ifdef CYCLOMX_X25_DEBUG
-static void hex_dump(char *msg, unsigned char *p, int len)
-{
-	print_hex_dump(KERN_INFO, msg, DUMP_PREFIX_OFFSET, 16, 1,
-		       p, len, true);
-}
-#endif
-
-/* Cyclom 2X Firmware-Specific Functions */
-/* Exec X.25 command. */
-static int x25_exec(struct cycx_device *card, int command, int link,
-		    void *d1, int len1, void *d2, int len2)
-{
-	struct cycx_x25_cmd c;
-	unsigned long flags;
-	u32 addr = 0x1200 + 0x2E0 * link + 0x1E2;
-	u8 retry = CYCX_X25_MAX_CMD_RETRY;
-	int err = 0;
-
-	c.command = command;
-	c.link = link;
-	c.len = len1 + len2;
-
-	spin_lock_irqsave(&card->u.x.lock, flags);
-
-	/* write command */
-	cycx_poke(&card->hw, X25_MBOX_OFFS, &c, sizeof(c) - sizeof(c.buf));
-
-	/* write X.25 data */
-	if (d1) {
-		cycx_poke(&card->hw, addr, d1, len1);
-
-		if (d2) {
-			if (len2 > 254) {
-				u32 addr1 = 0xA00 + 0x400 * link;
-
-				cycx_poke(&card->hw, addr + len1, d2, 249);
-				cycx_poke(&card->hw, addr1, ((u8*)d2) + 249,
-					  len2 - 249);
-			} else
-				cycx_poke(&card->hw, addr + len1, d2, len2);
-		}
-	}
-
-	/* generate interruption, executing command */
-	cycx_intr(&card->hw);
-
-	/* wait till card->mbox == 0 */
-	do {
-		err = cycx_exec(card->mbox);
-	} while (retry-- && err);
-
-	spin_unlock_irqrestore(&card->u.x.lock, flags);
-
-	return err;
-}
-
-/* Configure adapter. */
-static int cycx_x25_configure(struct cycx_device *card,
-			      struct cycx_x25_config *conf)
-{
-	struct {
-		u16 nlinks;
-		struct cycx_x25_config conf[2];
-	} x25_cmd_conf;
-
-	memset(&x25_cmd_conf, 0, sizeof(x25_cmd_conf));
-	x25_cmd_conf.nlinks = 2;
-	x25_cmd_conf.conf[0] = *conf;
-	/* FIXME: we need to find a way in the wanrouter framework
-		  to configure the second link, for now lets use it
-		  with the same config from the first link, fixing
-		  the interface type to RS232, the speed in 38400 and
-		  the clock to external */
-	x25_cmd_conf.conf[1] = *conf;
-	x25_cmd_conf.conf[1].link = 1;
-	x25_cmd_conf.conf[1].speed = 5; /* 38400 */
-	x25_cmd_conf.conf[1].clock = 8;
-	x25_cmd_conf.conf[1].flags = 0; /* default = RS232 */
-
-	cycx_x25_dump_config(&x25_cmd_conf.conf[0]);
-	cycx_x25_dump_config(&x25_cmd_conf.conf[1]);
-
-	return x25_exec(card, X25_CONFIG, 0,
-			&x25_cmd_conf, sizeof(x25_cmd_conf), NULL, 0);
-}
-
-/* Get protocol statistics. */
-static int cycx_x25_get_stats(struct cycx_device *card)
-{
-	/* the firmware expects 20 in the size field!!!
-	   thanks to Daniela */
-	int err = x25_exec(card, X25_STATISTIC, 0, NULL, 20, NULL, 0);
-
-	if (err)
-		return err;
-
-	interruptible_sleep_on(&card->wait_stats);
-
-	if (signal_pending(current))
-		return -EINTR;
-
-	card->wandev.stats.rx_packets = card->u.x.stats.n2_rx_frames;
-	card->wandev.stats.rx_over_errors = card->u.x.stats.rx_over_errors;
-	card->wandev.stats.rx_crc_errors = card->u.x.stats.rx_crc_errors;
-	card->wandev.stats.rx_length_errors = 0; /* not available from fw */
-	card->wandev.stats.rx_frame_errors = 0; /* not available from fw */
-	card->wandev.stats.rx_missed_errors = card->u.x.stats.rx_aborts;
-	card->wandev.stats.rx_dropped = 0; /* not available from fw */
-	card->wandev.stats.rx_errors = 0; /* not available from fw */
-	card->wandev.stats.tx_packets = card->u.x.stats.n2_tx_frames;
-	card->wandev.stats.tx_aborted_errors = card->u.x.stats.tx_aborts;
-	card->wandev.stats.tx_dropped = 0; /* not available from fw */
-	card->wandev.stats.collisions = 0; /* not available from fw */
-	card->wandev.stats.tx_errors = 0; /* not available from fw */
-
-	cycx_x25_dump_devs(&card->wandev);
-
-	return 0;
-}
-
-/* return the number of nibbles */
-static int byte_to_nibble(u8 *s, u8 *d, char *nibble)
-{
-	int i = 0;
-
-	if (*nibble && *s) {
-		d[i] |= *s++ - '0';
-		*nibble = 0;
-		++i;
-	}
-
-	while (*s) {
-		d[i] = (*s - '0') << 4;
-		if (*(s + 1))
-			d[i] |= *(s + 1) - '0';
-		else {
-			*nibble = 1;
-			break;
-		}
-		++i;
-		s += 2;
-	}
-
-	return i;
-}
-
-static void nibble_to_byte(u8 *s, u8 *d, u8 len, u8 nibble)
-{
-	if (nibble) {
-		*d++ = '0' + (*s++ & 0x0F);
-		--len;
-	}
-
-	while (len) {
-		*d++ = '0' + (*s >> 4);
-
-		if (--len) {
-			*d++ = '0' + (*s & 0x0F);
-			--len;
-		} else break;
-
-		++s;
-	}
-
-	*d = '\0';
-}
-
-/* Place X.25 call. */
-static int x25_place_call(struct cycx_device *card,
-			  struct cycx_x25_channel *chan)
-{
-	int err = 0,
-	    len;
-	char d[64],
-	     nibble = 0,
-	     mylen = chan->local_addr ? strlen(chan->local_addr) : 0,
-	     remotelen = strlen(chan->addr);
-	u8 key;
-
-	if (card->u.x.connection_keys == ~0U) {
-		pr_info("%s: too many simultaneous connection requests!\n",
-			card->devname);
-		return -EAGAIN;
-	}
-
-	key = ffz(card->u.x.connection_keys);
-	set_bit(key, (void*)&card->u.x.connection_keys);
-	++key;
-	dprintk(1, KERN_INFO "%s:x25_place_call:key=%d\n", card->devname, key);
-	memset(d, 0, sizeof(d));
-	d[1] = key; /* user key */
-	d[2] = 0x10;
-	d[4] = 0x0B;
-
-	len = byte_to_nibble(chan->addr, d + 6, &nibble);
-
-	if (chan->local_addr)
-		len += byte_to_nibble(chan->local_addr, d + 6 + len, &nibble);
-
-	if (nibble)
-		++len;
-
-	d[5] = mylen << 4 | remotelen;
-	d[6 + len + 1] = 0xCC; /* TCP/IP over X.25, thanks to Daniela :) */
-
-	if ((err = x25_exec(card, X25_CONNECT_REQUEST, chan->link,
-			    &d, 7 + len + 1, NULL, 0)) != 0)
-		clear_bit(--key, (void*)&card->u.x.connection_keys);
-	else
-		chan->lcn = -key;
-
-	return err;
-}
-
-/* Place X.25 CONNECT RESPONSE. */
-static int cycx_x25_connect_response(struct cycx_device *card,
-				     struct cycx_x25_channel *chan)
-{
-	u8 d[8];
-
-	memset(d, 0, sizeof(d));
-	d[0] = d[3] = chan->lcn;
-	d[2] = 0x10;
-	d[4] = 0x0F;
-	d[7] = 0xCC; /* TCP/IP over X.25, thanks Daniela */
-
-	return x25_exec(card, X25_CONNECT_RESPONSE, chan->link, &d, 8, NULL, 0);
-}
-
-/* Place X.25 DISCONNECT RESPONSE.  */
-static int cycx_x25_disconnect_response(struct cycx_device *card, u8 link,
-					u8 lcn)
-{
-	char d[5];
-
-	memset(d, 0, sizeof(d));
-	d[0] = d[3] = lcn;
-	d[2] = 0x10;
-	d[4] = 0x17;
-
-	return x25_exec(card, X25_DISCONNECT_RESPONSE, link, &d, 5, NULL, 0);
-}
-
-/* Clear X.25 call.  */
-static int x25_clear_call(struct cycx_device *card, u8 link, u8 lcn, u8 cause,
-			  u8 diagn)
-{
-	u8 d[7];
-
-	memset(d, 0, sizeof(d));
-	d[0] = d[3] = lcn;
-	d[2] = 0x10;
-	d[4] = 0x13;
-	d[5] = cause;
-	d[6] = diagn;
-
-	return x25_exec(card, X25_DISCONNECT_REQUEST, link, d, 7, NULL, 0);
-}
-
-/* Send X.25 data packet. */
-static int cycx_x25_send(struct cycx_device *card, u8 link, u8 lcn, u8 bitm,
-			 int len, void *buf)
-{
-	u8 d[] = "?\xFF\x10??";
-
-	d[0] = d[3] = lcn;
-	d[4] = bitm;
-
-	return x25_exec(card, X25_DATA_REQUEST, link, &d, 5, buf, len);
-}
-
-/* Miscellaneous */
-/* Find network device by its channel number.  */
-static struct net_device *cycx_x25_get_dev_by_lcn(struct wan_device *wandev,
-						  s16 lcn)
-{
-	struct net_device *dev = wandev->dev;
-	struct cycx_x25_channel *chan;
-
-	while (dev) {
-		chan = netdev_priv(dev);
-
-		if (chan->lcn == lcn)
-			break;
-		dev = chan->slave;
-	}
-	return dev;
-}
-
-/* Find network device by its remote dte address. */
-static struct net_device *
-	cycx_x25_get_dev_by_dte_addr(struct wan_device *wandev, char *dte)
-{
-	struct net_device *dev = wandev->dev;
-	struct cycx_x25_channel *chan;
-
-	while (dev) {
-		chan = netdev_priv(dev);
-
-		if (!strcmp(chan->addr, dte))
-			break;
-		dev = chan->slave;
-	}
-	return dev;
-}
-
-/* Initiate connection on the logical channel.
- * o for PVC we just get channel configuration
- * o for SVCs place an X.25 call
- *
- * Return:	0	connected
- *		>0	connection in progress
- *		<0	failure */
-static int cycx_x25_chan_connect(struct net_device *dev)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-	struct cycx_device *card = chan->card;
-
-	if (chan->svc) {
-		if (!chan->addr[0])
-			return -EINVAL; /* no destination address */
-
-		dprintk(1, KERN_INFO "%s: placing X.25 call to %s...\n",
-				  card->devname, chan->addr);
-
-		if (x25_place_call(card, chan))
-			return -EIO;
-
-		cycx_x25_set_chan_state(dev, WAN_CONNECTING);
-		return 1;
-	} else
-		cycx_x25_set_chan_state(dev, WAN_CONNECTED);
-
-	return 0;
-}
-
-/* Disconnect logical channel.
- * o if SVC then clear X.25 call */
-static void cycx_x25_chan_disconnect(struct net_device *dev)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-
-	if (chan->svc) {
-		x25_clear_call(chan->card, chan->link, chan->lcn, 0, 0);
-		cycx_x25_set_chan_state(dev, WAN_DISCONNECTING);
-	} else
-		cycx_x25_set_chan_state(dev, WAN_DISCONNECTED);
-}
-
-/* Called by kernel timer */
-static void cycx_x25_chan_timer(unsigned long d)
-{
-	struct net_device *dev = (struct net_device *)d;
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-
-	if (chan->state == WAN_CONNECTED)
-		cycx_x25_chan_disconnect(dev);
-	else
-		pr_err("%s: %s for svc (%s) not connected!\n",
-		       chan->card->devname, __func__, dev->name);
-}
-
-/* Set logical channel state. */
-static void cycx_x25_set_chan_state(struct net_device *dev, u8 state)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-	struct cycx_device *card = chan->card;
-	unsigned long flags;
-	char *string_state = NULL;
-
-	spin_lock_irqsave(&card->lock, flags);
-
-	if (chan->state != state) {
-		if (chan->svc && chan->state == WAN_CONNECTED)
-			del_timer(&chan->timer);
-
-		switch (state) {
-		case WAN_CONNECTED:
-			string_state = "connected!";
-			*(__be16*)dev->dev_addr = htons(chan->lcn);
-			netif_wake_queue(dev);
-			reset_timer(dev);
-
-			if (chan->protocol == ETH_P_X25)
-				cycx_x25_chan_send_event(dev,
-					X25_IFACE_CONNECT);
-
-			break;
-		case WAN_CONNECTING:
-			string_state = "connecting...";
-			break;
-		case WAN_DISCONNECTING:
-			string_state = "disconnecting...";
-			break;
-		case WAN_DISCONNECTED:
-			string_state = "disconnected!";
-
-			if (chan->svc) {
-				*(unsigned short*)dev->dev_addr = 0;
-				chan->lcn = 0;
-			}
-
-			if (chan->protocol == ETH_P_X25)
-				cycx_x25_chan_send_event(dev,
-					X25_IFACE_DISCONNECT);
-
-			netif_wake_queue(dev);
-			break;
-		}
-
-		pr_info("%s: interface %s %s\n",
-			card->devname, dev->name, string_state);
-		chan->state = state;
-	}
-
-	spin_unlock_irqrestore(&card->lock, flags);
-}
-
-/* Send packet on a logical channel.
- *	When this function is called, tx_skb field of the channel data space
- *	points to the transmit socket buffer.  When transmission is complete,
- *	release socket buffer and reset 'tbusy' flag.
- *
- * Return:	0	- transmission complete
- *		1	- busy
- *
- * Notes:
- * 1. If packet length is greater than MTU for this channel, we'll fragment
- *    the packet into 'complete sequence' using M-bit.
- * 2. When transmission is complete, an event notification should be issued
- *    to the router.  */
-static int cycx_x25_chan_send(struct net_device *dev, struct sk_buff *skb)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-	struct cycx_device *card = chan->card;
-	int bitm = 0;		/* final packet */
-	unsigned len = skb->len;
-
-	if (skb->len > card->wandev.mtu) {
-		len = card->wandev.mtu;
-		bitm = 0x10;		/* set M-bit (more data) */
-	}
-
-	if (cycx_x25_send(card, chan->link, chan->lcn, bitm, len, skb->data))
-		return 1;
-
-	if (bitm) {
-		skb_pull(skb, len);
-		return 1;
-	}
-
-	++chan->ifstats.tx_packets;
-	chan->ifstats.tx_bytes += len;
-
-	return 0;
-}
-
-/* Send event (connection, disconnection, etc) to X.25 socket layer */
-
-static void cycx_x25_chan_send_event(struct net_device *dev, u8 event)
-{
-	struct sk_buff *skb;
-	unsigned char *ptr;
-
-	if ((skb = dev_alloc_skb(1)) == NULL) {
-		pr_err("%s: out of memory\n", __func__);
-		return;
-	}
-
-	ptr  = skb_put(skb, 1);
-	*ptr = event;
-
-	skb->protocol = x25_type_trans(skb, dev);
-	netif_rx(skb);
-}
-
-/* Convert line speed in bps to a number used by cyclom 2x code. */
-static u8 bps_to_speed_code(u32 bps)
-{
-	u8 number = 0; /* defaults to the lowest (1200) speed ;> */
-
-	     if (bps >= 512000) number = 8;
-	else if (bps >= 256000) number = 7;
-	else if (bps >= 64000)  number = 6;
-	else if (bps >= 38400)  number = 5;
-	else if (bps >= 19200)  number = 4;
-	else if (bps >= 9600)   number = 3;
-	else if (bps >= 4800)   number = 2;
-	else if (bps >= 2400)   number = 1;
-
-	return number;
-}
-
-/* log base 2 */
-static u8 cycx_log2(u32 n)
-{
-	u8 log = 0;
-
-	if (!n)
-		return 0;
-
-	while (n > 1) {
-		n >>= 1;
-		++log;
-	}
-
-	return log;
-}
-
-/* Convert decimal string to unsigned integer.
- * If len != 0 then only 'len' characters of the string are converted. */
-static unsigned dec_to_uint(u8 *str, int len)
-{
-	unsigned val = 0;
-
-	if (!len)
-		len = strlen(str);
-
-	for (; len && isdigit(*str); ++str, --len)
-		val = (val * 10) + (*str - (unsigned) '0');
-
-	return val;
-}
-
-static void reset_timer(struct net_device *dev)
-{
-	struct cycx_x25_channel *chan = netdev_priv(dev);
-
-	if (chan->svc)
-		mod_timer(&chan->timer, jiffies+chan->idle_tmout*HZ);
-}
-#ifdef CYCLOMX_X25_DEBUG
-static void cycx_x25_dump_config(struct cycx_x25_config *conf)
-{
-	pr_info("X.25 configuration\n");
-	pr_info("-----------------\n");
-	pr_info("link number=%d\n", conf->link);
-	pr_info("line speed=%d\n", conf->speed);
-	pr_info("clock=%sternal\n", conf->clock == 8 ? "Ex" : "In");
-	pr_info("# level 2 retransm.=%d\n", conf->n2);
-	pr_info("level 2 window=%d\n", conf->n2win);
-	pr_info("level 3 window=%d\n", conf->n3win);
-	pr_info("# logical channels=%d\n", conf->nvc);
-	pr_info("level 3 pkt len=%d\n", conf->pktlen);
-	pr_info("my address=%d\n", conf->locaddr);
-	pr_info("remote address=%d\n", conf->remaddr);
-	pr_info("t1=%d seconds\n", conf->t1);
-	pr_info("t2=%d seconds\n", conf->t2);
-	pr_info("t21=%d seconds\n", conf->t21);
-	pr_info("# PVCs=%d\n", conf->npvc);
-	pr_info("t23=%d seconds\n", conf->t23);
-	pr_info("flags=0x%x\n", conf->flags);
-}
-
-static void cycx_x25_dump_stats(struct cycx_x25_stats *stats)
-{
-	pr_info("X.25 statistics\n");
-	pr_info("--------------\n");
-	pr_info("rx_crc_errors=%d\n", stats->rx_crc_errors);
-	pr_info("rx_over_errors=%d\n", stats->rx_over_errors);
-	pr_info("n2_tx_frames=%d\n", stats->n2_tx_frames);
-	pr_info("n2_rx_frames=%d\n", stats->n2_rx_frames);
-	pr_info("tx_timeouts=%d\n", stats->tx_timeouts);
-	pr_info("rx_timeouts=%d\n", stats->rx_timeouts);
-	pr_info("n3_tx_packets=%d\n", stats->n3_tx_packets);
-	pr_info("n3_rx_packets=%d\n", stats->n3_rx_packets);
-	pr_info("tx_aborts=%d\n", stats->tx_aborts);
-	pr_info("rx_aborts=%d\n", stats->rx_aborts);
-}
-
-static void cycx_x25_dump_devs(struct wan_device *wandev)
-{
-	struct net_device *dev = wandev->dev;
-
-	pr_info("X.25 dev states\n");
-	pr_info("name: addr:           txoff:  protocol:\n");
-	pr_info("---------------------------------------\n");
-
-	while(dev) {
-		struct cycx_x25_channel *chan = netdev_priv(dev);
-
-		pr_info("%-5.5s %-15.15s   %d     ETH_P_%s\n",
-			chan->name, chan->addr, netif_queue_stopped(dev),
-			chan->protocol == ETH_P_IP ? "IP" : "X25");
-		dev = chan->slave;
-	}
-}
-
-#endif /* CYCLOMX_X25_DEBUG */
-/* End */

include/linux/cyclomx.h

···
-#ifndef	_CYCLOMX_H
-#define	_CYCLOMX_H
-/*
-* cyclomx.h	Cyclom 2X WAN Link Driver.
-*		User-level API definitions.
-*
-* Author:	Arnaldo Carvalho de Melo <[e-mail]>
-*
-* Copyright:	(c) 1998-2003 Arnaldo Carvalho de Melo
-*
-* Based on wanpipe.h by Gene Kozin <[e-mail]>
-*
-*		This program is free software; you can redistribute it and/or
-*		modify it under the terms of the GNU General Public License
-*		as published by the Free Software Foundation; either version
-*		2 of the License, or (at your option) any later version.
-* ============================================================================
-* 2000/07/13    acme		remove crap #if KERNEL_VERSION > blah
-* 2000/01/21    acme            rename cyclomx_open to cyclomx_mod_inc_use_count
-*                               and cyclomx_close to cyclomx_mod_dec_use_count
-* 1999/05/19	acme		wait_queue_head_t wait_stats(support for 2.3.*)
-* 1999/01/03	acme		judicious use of data types
-* 1998/12/27	acme		cleanup: PACKED not needed
-* 1998/08/08	acme		Version 0.0.1
-*/
-
-#include <linux/wanrouter.h>
-#include <linux/spinlock.h>
-
-#ifdef	__KERNEL__
-/* Kernel Interface */
-
-#include <linux/cycx_drv.h>	/* Cyclom 2X support module API definitions */
-#include <linux/cycx_cfm.h>	/* Cyclom 2X firmware module definitions */
-#ifdef CONFIG_CYCLOMX_X25
-#include <linux/cycx_x25.h>
-#endif
-
-/* Adapter Data Space.
- * This structure is needed because we handle multiple cards, otherwise
- * static data would do it.
- */
-struct cycx_device {
-	char devname[WAN_DRVNAME_SZ + 1];/* card name */
-	struct cycx_hw hw;		/* hardware configuration */
-	struct wan_device wandev;	/* WAN device data space */
-	u32 state_tick;			/* link state timestamp */
-	spinlock_t lock;
-	char in_isr;			/* interrupt-in-service flag */
-	char buff_int_mode_unbusy;      /* flag for carrying out dev_tint */
-	wait_queue_head_t wait_stats;  /* to wait for the STATS indication */
-	void __iomem *mbox;			/* -> mailbox */
-	void (*isr)(struct cycx_device* card);	/* interrupt service routine */
-	int (*exec)(struct cycx_device* card, void* u_cmd, void* u_data);
-	union {
-#ifdef CONFIG_CYCLOMX_X25
-		struct { /* X.25 specific data */
-			u32 lo_pvc;
-			u32 hi_pvc;
-			u32 lo_svc;
-			u32 hi_svc;
-			struct cycx_x25_stats stats;
-			spinlock_t lock;
-			u32 connection_keys;
-		} x;
-#endif
-	} u;
-};
-
-/* Public Functions */
-void cycx_set_state(struct cycx_device *card, int state);
-
-#ifdef CONFIG_CYCLOMX_X25
-int cycx_x25_wan_init(struct cycx_device *card, wandev_conf_t *conf);
-#endif
-#endif	/* __KERNEL__ */
-#endif	/* _CYCLOMX_H */

include/linux/cycx_drv.h

···
-/*
-* cycx_drv.h	CYCX Support Module.  Kernel API Definitions.
-*
-* Author:	Arnaldo Carvalho de Melo <[e-mail]>
-*
-* Copyright:	(c) 1998-2003 Arnaldo Carvalho de Melo
-*
-* Based on sdladrv.h by Gene Kozin <[e-mail]>
-*
-*		This program is free software; you can redistribute it and/or
-*		modify it under the terms of the GNU General Public License
-*		as published by the Free Software Foundation; either version
-*		2 of the License, or (at your option) any later version.
-* ============================================================================
-* 1999/10/23	acme		cycxhw_t cleanup
-* 1999/01/03	acme		more judicious use of data types...
-*				uclong, ucchar, etc deleted, the u8, u16, u32
-*				types are the portable way to go.
-* 1999/01/03	acme		judicious use of data types... u16, u32, etc
-* 1998/12/26	acme	 	FIXED_BUFFERS, CONF_OFFSET,
-*                               removal of cy_read{bwl}
-* 1998/08/08	acme	 	Initial version.
-*/
-#ifndef	_CYCX_DRV_H
-#define	_CYCX_DRV_H
-
-#define	CYCX_WINDOWSIZE	0x4000	/* default dual-port memory window size */
-#define	GEN_CYCX_INTR	0x02
-#define	RST_ENABLE	0x04
-#define	START_CPU	0x06
-#define	RST_DISABLE	0x08
-#define	FIXED_BUFFERS	0x08
-#define	TEST_PATTERN	0xaa55
-#define	CMD_OFFSET	0x20
-#define CONF_OFFSET     0x0380
-#define	RESET_OFFSET	0x3c00	/* For reset file load */
-#define	DATA_OFFSET	0x0100	/* For code and data files load */
-#define	START_OFFSET	0x3ff0	/* 80186 starts here */
-
-/**
- *	struct cycx_hw - Adapter hardware configuration
- *	@fwid - firmware ID
- *	@irq - interrupt request level
- *	@dpmbase - dual-port memory base
- *	@dpmsize - dual-port memory size
- *	@reserved - reserved for future use
- */
-struct cycx_hw {
-	u32 fwid;
-	int irq;
-	void __iomem *dpmbase;
-	u32 dpmsize;
-	u32 reserved[5];
-};
-
-/* Function Prototypes */
-extern int cycx_setup(struct cycx_hw *hw, void *sfm, u32 len, unsigned long base);
-extern int cycx_down(struct cycx_hw *hw);
-extern int cycx_peek(struct cycx_hw *hw, u32 addr, void *buf, u32 len);
-extern int cycx_poke(struct cycx_hw *hw, u32 addr, void *buf, u32 len);
-extern int cycx_exec(void __iomem *addr);
-
-extern void cycx_intr(struct cycx_hw *hw);
-#endif	/* _CYCX_DRV_H */

include/linux/wanrouter.h

···
-/*****************************************************************************
-* wanrouter.h	Definitions for the WAN Multiprotocol Router Module.
-*		This module provides API and common services for WAN Link
-*		Drivers and is completely hardware-independent.
-*
-* Author: 	Nenad Corbic <[e-mail]>
-*		Gideon Hack 	
-* Additions:	Arnaldo Melo
-*
-* Copyright:	(c) 1995-2000 Sangoma Technologies Inc.
-*
-*		This program is free software; you can redistribute it and/or
-*		modify it under the terms of the GNU General Public License
-*		as published by the Free Software Foundation; either version
-*		2 of the License, or (at your option) any later version.
-* ============================================================================
-* Jul 21, 2000  Nenad Corbic	Added WAN_FT1_READY State
-* Feb 24, 2000  Nenad Corbic    Added support for socket based x25api
-* Jan 28, 2000  Nenad Corbic    Added support for the ASYNC protocol.
-* Oct 04, 1999  Nenad Corbic 	Updated for 2.1.0 release
-* Jun 02, 1999  Gideon Hack	Added support for the S514 adapter.
-* May 23, 1999	Arnaldo Melo	Added local_addr to wanif_conf_t
-*				WAN_DISCONNECTING state added
-* Jul 20, 1998	David Fong	Added Inverse ARP options to 'wanif_conf_t'
-* Jun 12, 1998	David Fong	Added Cisco HDLC support.
-* Dec 16, 1997	Jaspreet Singh	Moved 'enable_IPX' and 'network_number' to
-*				'wanif_conf_t'
-* Dec 05, 1997	Jaspreet Singh	Added 'pap', 'chap' to 'wanif_conf_t'
-*				Added 'authenticator' to 'wan_ppp_conf_t'
-* Nov 06, 1997	Jaspreet Singh	Changed Router Driver version to 1.1 from 1.0
-* Oct 20, 1997	Jaspreet Singh	Added 'cir','bc','be' and 'mc' to 'wanif_conf_t'
-*				Added 'enable_IPX' and 'network_number' to 
-*				'wan_device_t'.  Also added defines for
-*				UDP PACKET TYPE, Interrupt test, critical values
-*				for RACE conditions.
-* Oct 05, 1997	Jaspreet Singh	Added 'dlci_num' and 'dlci[100]' to 
-*				'wan_fr_conf_t' to configure a list of dlci(s)
-*				for a NODE 
-* Jul 07, 1997	Jaspreet Singh	Added 'ttl' to 'wandev_conf_t' & 'wan_device_t'
-* May 29, 1997 	Jaspreet Singh	Added 'tx_int_enabled' to 'wan_device_t'
-* May 21, 1997	Jaspreet Singh	Added 'udp_port' to 'wan_device_t'
-* Apr 25, 1997  Farhan Thawar   Added 'udp_port' to 'wandev_conf_t'
-* Jan 16, 1997	Gene Kozin	router_devlist made public
-* Jan 02, 1997	Gene Kozin	Initial version (based on wanpipe.h).
-*****************************************************************************/
+/*
+ * wanrouter.h	Legacy declarations kept around until X25 is removed
+ */
+
 #ifndef	_ROUTER_H
 #define	_ROUTER_H
 
 #include <uapi/linux/wanrouter.h>
-
-/****** Kernel Interface ****************************************************/
-
-#include <linux/fs.h>		/* support for device drivers */
-#include <linux/proc_fs.h>	/* proc filesystem pragmatics */
-#include <linux/netdevice.h>	/* support for network drivers */
-#include <linux/spinlock.h>     /* Support for SMP Locking */
-
-/*----------------------------------------------------------------------------
- * WAN device data space.
- */
-struct wan_device {
-	unsigned magic;			/* magic number */
-	char* name;			/* -> WAN device name (ASCIIZ) */
-	void* private;			/* -> driver private data */
-	unsigned config_id;		/* Configuration ID */
-					/****** hardware configuration ******/
-	unsigned ioport;		/* adapter I/O port base #1 */
-	char S514_cpu_no[1];		/* PCI CPU Number */
-	unsigned char S514_slot_no;	/* PCI Slot Number */
-	unsigned long maddr;		/* dual-port memory address */
-	unsigned msize;			/* dual-port memory size */
-	int irq;			/* interrupt request level */
-	int dma;			/* DMA request level */
-	unsigned bps;			/* data transfer rate */
-	unsigned mtu;			/* max physical transmit unit size */
-	unsigned udp_port;              /* UDP port for management */
-        unsigned char ttl;		/* Time To Live for UDP security */
-	unsigned enable_tx_int; 	/* Transmit Interrupt enabled or not */
-	char interface;			/* RS-232/V.35, etc. */
-	char clocking;			/* external/internal */
-	char line_coding;		/* NRZ/NRZI/FM0/FM1, etc. */
-	char station;			/* DTE/DCE, primary/secondary, etc. */
-	char connection;		/* permanent/switched/on-demand */
-	char signalling;		/* Signalling RS232 or V35 */
-	char read_mode;			/* read mode: Polling or interrupt */
-	char new_if_cnt;                /* Number of interfaces per wanpipe */ 
-	char del_if_cnt;		/* Number of times del_if() gets called */
-	unsigned char piggyback;        /* Piggibacking a port */
-	unsigned hw_opt[4];		/* other hardware options */
-					/****** status and statistics *******/
-	char state;			/* device state */
-	char api_status;		/* device api status */
-	struct net_device_stats stats; 	/* interface statistics */
-	unsigned reserved[16];		/* reserved for future use */
-	unsigned long critical;		/* critical section flag */
-	spinlock_t lock;                /* Support for SMP Locking */
-
-					/****** device management methods ***/
-	int (*setup) (struct wan_device *wandev, wandev_conf_t *conf);
-	int (*shutdown) (struct wan_device *wandev);
-	int (*update) (struct wan_device *wandev);
-	int (*ioctl) (struct wan_device *wandev, unsigned cmd,
-		unsigned long arg);
-	int (*new_if)(struct wan_device *wandev, struct net_device *dev,
-		      wanif_conf_t *conf);
-	int (*del_if)(struct wan_device *wandev, struct net_device *dev);
-					/****** maintained by the router ****/
-	struct wan_device* next;	/* -> next device */
-	struct net_device* dev;		/* list of network interfaces */
-	unsigned ndev;			/* number of interfaces */
-	struct proc_dir_entry *dent;	/* proc filesystem entry */
-};
-
-/* Public functions available for device drivers */
-extern int register_wan_device(struct wan_device *wandev);
-extern int unregister_wan_device(char *name);
-
-/* Proc interface functions. These must not be called by the drivers! */
-extern int wanrouter_proc_init(void);
-extern void wanrouter_proc_cleanup(void);
-extern int wanrouter_proc_add(struct wan_device *wandev);
-extern int wanrouter_proc_delete(struct wan_device *wandev);
-extern long wanrouter_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
-
-/* Public Data */
-/* list of registered devices */
-extern struct wan_device *wanrouter_router_devlist;
 
 #endif	/* _ROUTER_H */

include/uapi/linux/wanrouter.h

···
-/*****************************************************************************
-* wanrouter.h	Definitions for the WAN Multiprotocol Router Module.
-*		This module provides API and common services for WAN Link
-*		Drivers and is completely hardware-independent.
-*
-* Author: 	Nenad Corbic <[e-mail]>
-*		Gideon Hack 	
-* Additions:	Arnaldo Melo
-*
-* Copyright:	(c) 1995-2000 Sangoma Technologies Inc.
-*
-*		This program is free software; you can redistribute it and/or
-*		modify it under the terms of the GNU General Public License
-*		as published by the Free Software Foundation; either version
-*		2 of the License, or (at your option) any later version.
-* ============================================================================
-* Jul 21, 2000  Nenad Corbic	Added WAN_FT1_READY State
-* Feb 24, 2000  Nenad Corbic    Added support for socket based x25api
-* Jan 28, 2000  Nenad Corbic    Added support for the ASYNC protocol.
-* Oct 04, 1999  Nenad Corbic 	Updated for 2.1.0 release
-* Jun 02, 1999  Gideon Hack	Added support for the S514 adapter.
-* May 23, 1999	Arnaldo Melo	Added local_addr to wanif_conf_t
-*				WAN_DISCONNECTING state added
-* Jul 20, 1998	David Fong	Added Inverse ARP options to 'wanif_conf_t'
-* Jun 12, 1998	David Fong	Added Cisco HDLC support.
-* Dec 16, 1997	Jaspreet Singh	Moved 'enable_IPX' and 'network_number' to
-*				'wanif_conf_t'
-* Dec 05, 1997	Jaspreet Singh	Added 'pap', 'chap' to 'wanif_conf_t'
-*				Added 'authenticator' to 'wan_ppp_conf_t'
-* Nov 06, 1997	Jaspreet Singh	Changed Router Driver version to 1.1 from 1.0
-* Oct 20, 1997	Jaspreet Singh	Added 'cir','bc','be' and 'mc' to 'wanif_conf_t'
-*				Added 'enable_IPX' and 'network_number' to 
-*				'wan_device_t'.  Also added defines for
-*				UDP PACKET TYPE, Interrupt test, critical values
-*				for RACE conditions.
-* Oct 05, 1997	Jaspreet Singh	Added 'dlci_num' and 'dlci[100]' to 
-*				'wan_fr_conf_t' to configure a list of dlci(s)
-*				for a NODE 
-* Jul 07, 1997	Jaspreet Singh	Added 'ttl' to 'wandev_conf_t' & 'wan_device_t'
-* May 29, 1997 	Jaspreet Singh	Added 'tx_int_enabled' to 'wan_device_t'
-* May 21, 1997	Jaspreet Singh	Added 'udp_port' to 'wan_device_t'
-* Apr 25, 1997  Farhan Thawar   Added 'udp_port' to 'wandev_conf_t'
-* Jan 16, 1997	Gene Kozin	router_devlist made public
-* Jan 02, 1997	Gene Kozin	Initial version (based on wanpipe.h).
-*****************************************************************************/
+/*
+ * wanrouter.h	Legacy declarations kept around until X25 is removed
+ */
 
 #ifndef _UAPI_ROUTER_H
 #define _UAPI_ROUTER_H
-
-#define	ROUTER_NAME	"wanrouter"	/* in case we ever change it */
-#define	ROUTER_VERSION	1		/* version number */
-#define	ROUTER_RELEASE	1		/* release (minor version) number */
-#define	ROUTER_IOCTL	'W'		/* for IOCTL calls */
-#define	ROUTER_MAGIC	0x524D4157L	/* signature: 'WANR' reversed */
-
-/* IOCTL codes for /proc/router/<device> entries (up to 255) */
-enum router_ioctls
-{
-	ROUTER_SETUP	= ROUTER_IOCTL<<8,	/* configure device */
-	ROUTER_DOWN,				/* shut down device */
-	ROUTER_STAT,				/* get device status */
-	ROUTER_IFNEW,				/* add interface */
-	ROUTER_IFDEL,				/* delete interface */
-	ROUTER_IFSTAT,				/* get interface status */
-	ROUTER_USER	= (ROUTER_IOCTL<<8)+16,	/* driver-specific calls */
-	ROUTER_USER_MAX	= (ROUTER_IOCTL<<8)+31
-};
-
-/* identifiers for displaying proc file data for dual port adapters */
-#define PROC_DATA_PORT_0 0x8000	/* the data is for port 0 */
-#define PROC_DATA_PORT_1 0x8001	/* the data is for port 1 */
-
-/* NLPID for packet encapsulation (ISO/IEC TR 9577) */
-#define	NLPID_IP	0xCC	/* Internet Protocol Datagram */
-#define	NLPID_SNAP	0x80	/* IEEE Subnetwork Access Protocol */
-#define	NLPID_CLNP	0x81	/* ISO/IEC 8473 */
-#define	NLPID_ESIS	0x82	/* ISO/IEC 9542 */
-#define	NLPID_ISIS	0x83	/* ISO/IEC ISIS */
-#define	NLPID_Q933	0x08	/* CCITT Q.933 */
-
-/* Miscellaneous */
-#define	WAN_IFNAME_SZ	15	/* max length of the interface name */
-#define	WAN_DRVNAME_SZ	15	/* max length of the link driver name */
-#define	WAN_ADDRESS_SZ	31	/* max length of the WAN media address */
-#define USED_BY_FIELD	8	/* max length of the used by field */
-
-/* Defines for UDP PACKET TYPE */
-#define UDP_PTPIPE_TYPE 	0x01
-#define UDP_FPIPE_TYPE		0x02
-#define UDP_CPIPE_TYPE		0x03
-#define UDP_DRVSTATS_TYPE 	0x04
-#define UDP_INVALID_TYPE  	0x05
-
-/* Command return code */
-#define CMD_OK		0		/* normal firmware return code */
-#define CMD_TIMEOUT	0xFF		/* firmware command timed out */
-
-/* UDP Packet Management */
-#define UDP_PKT_FRM_STACK	0x00
-#define UDP_PKT_FRM_NETWORK	0x01
-
-/* Maximum interrupt test counter */
-#define MAX_INTR_TEST_COUNTER	100
-
-/* Critical Values for RACE conditions*/
-#define CRITICAL_IN_ISR		0xA1
-#define CRITICAL_INTR_HANDLED	0xB1
-
-/****** Data Types **********************************************************/
-
-/*----------------------------------------------------------------------------
- * X.25-specific link-level configuration.
- */
-typedef struct wan_x25_conf
-{
-	unsigned lo_pvc;	/* lowest permanent circuit number */
-	unsigned hi_pvc;	/* highest permanent circuit number */
-	unsigned lo_svc;	/* lowest switched circuit number */
-	unsigned hi_svc;	/* highest switched circuit number */
-	unsigned hdlc_window;	/* HDLC window size (1..7) */
-	unsigned pkt_window;	/* X.25 packet window size (1..7) */
-	unsigned t1;		/* HDLC timer T1, sec (1..30) */
-	unsigned t2;		/* HDLC timer T2, sec (0..29) */
-	unsigned t4;		/* HDLC supervisory frame timer = T4 * T1 */
-	unsigned n2;		/* HDLC retransmission limit (1..30) */
-	unsigned t10_t20;	/* X.25 RESTART timeout, sec (1..255) */
-	unsigned t11_t21;	/* X.25 CALL timeout, sec (1..255) */
-	unsigned t12_t22;	/* X.25 RESET timeout, sec (1..255) */
-	unsigned t13_t23;	/* X.25 CLEAR timeout, sec (1..255) */
-	unsigned t16_t26;	/* X.25 INTERRUPT timeout, sec (1..255) */
-	unsigned t28;		/* X.25 REGISTRATION timeout, sec (1..255) */
-	unsigned r10_r20;	/* RESTART retransmission limit (0..250) */
-	unsigned r12_r22;	/* RESET retransmission limit (0..250) */
-	unsigned r13_r23;	/* CLEAR retransmission limit (0..250) */
-	unsigned ccitt_compat;	/* compatibility mode: 1988/1984/1980 */
-	unsigned x25_conf_opt;   /* User defined x25 config optoins */
-	unsigned char LAPB_hdlc_only; /* Run in HDLC only mode */
-	unsigned char logging;   /* Control connection logging */  
-	unsigned char oob_on_modem; /* Whether to send modem status to the user app */
-} wan_x25_conf_t;
-
-/*----------------------------------------------------------------------------
- * Frame relay specific link-level configuration.
- */
-typedef struct wan_fr_conf
-{
-	unsigned signalling;	/* local in-channel signalling type */
-	unsigned t391;		/* link integrity verification timer */
-	unsigned t392;		/* polling verification timer */
-	unsigned n391;		/* full status polling cycle counter */
-	unsigned n392;		/* error threshold counter */
-	unsigned n393;		/* monitored events counter */
-	unsigned dlci_num;	/* number of DLCs (access node) */
-	unsigned  dlci[100];    /* List of all DLCIs */
-} wan_fr_conf_t;
-
-/*----------------------------------------------------------------------------
- * PPP-specific link-level configuration.
- */
-typedef struct wan_ppp_conf
-{
-	unsigned restart_tmr;	/* restart timer */
-	unsigned auth_rsrt_tmr;	/* authentication timer */
-	unsigned auth_wait_tmr;	/* authentication timer */
-	unsigned mdm_fail_tmr;	/* modem failure timer */
-	unsigned dtr_drop_tmr;	/* DTR drop timer */
-	unsigned connect_tmout;	/* connection timeout */
-	unsigned conf_retry;	/* max. retry */
-	unsigned term_retry;	/* max. retry */
-	unsigned fail_retry;	/* max. retry */
-	unsigned auth_retry;	/* max. retry */
-	unsigned auth_options;	/* authentication opt. */
-	unsigned ip_options;	/* IP options */
-	char	authenticator;	/* AUTHENTICATOR or not */
-	char	ip_mode;	/* Static/Host/Peer */
-} wan_ppp_conf_t;
-
-/*----------------------------------------------------------------------------
- * CHDLC-specific link-level configuration.
- */
-typedef struct wan_chdlc_conf
-{
-	unsigned char ignore_dcd;	/* Protocol options:		*/
-	unsigned char ignore_cts;	/*  Ignore these to determine	*/
-	unsigned char ignore_keepalive;	/*  link status (Yes or No)	*/
-	unsigned char hdlc_streaming;	/*  hdlc_streaming mode (Y/N) */
-	unsigned char receive_only;	/*  no transmit buffering (Y/N) */
-	unsigned keepalive_tx_tmr;	/* transmit keepalive timer */
-	unsigned keepalive_rx_tmr;	/* receive  keepalive timer */
-	unsigned keepalive_err_margin;	/* keepalive_error_tolerance */
-	unsigned slarp_timer;		/* SLARP request timer */
-} wan_chdlc_conf_t;
-
-
-/*----------------------------------------------------------------------------
- * WAN device configuration. Passed to ROUTER_SETUP IOCTL.
- */
-typedef struct wandev_conf
-{
-	unsigned magic;		/* magic number (for verification) */
-	unsigned config_id;	/* configuration structure identifier */
-				/****** hardware configuration ******/
-	unsigned ioport;	/* adapter I/O port base */
-	unsigned long maddr;	/* dual-port memory address */
-	unsigned msize;		/* dual-port memory size */
-	int irq;		/* interrupt request level */
-	int dma;		/* DMA request level */
-        char S514_CPU_no[1];	/* S514 PCI adapter CPU number ('A' or 'B') */
-        unsigned PCI_slot_no;	/* S514 PCI adapter slot number */
-	char auto_pci_cfg;	/* S515 PCI automatic slot detection */
-	char comm_port;		/* Communication Port (PRI=0, SEC=1) */ 
-	unsigned bps;		/* data transfer rate */
-	unsigned mtu;		/* maximum transmit unit size */
-        unsigned udp_port;      /* UDP port for management */
-	unsigned char ttl;	/* Time To Live for UDP security */
-	unsigned char ft1;	/* FT1 Configurator Option */
-        char interface;		/* RS-232/V.35, etc. */
-	char clocking;		/* external/internal */
-	char line_coding;	/* NRZ/NRZI/FM0/FM1, etc. */
-	char station;		/* DTE/DCE, primary/secondary, etc. */
-	char connection;	/* permanent/switched/on-demand */
-	char read_mode;		/* read mode: Polling or interrupt */
-	char receive_only;	/* disable tx buffers */
-	char tty;		/* Create a fake tty device */
-	unsigned tty_major;	/* Major number for wanpipe tty device */
-	unsigned tty_minor; 	/* Minor number for wanpipe tty device */
-	unsigned tty_mode;	/* TTY operation mode SYNC or ASYNC */
-	char backup;		/* Backup Mode */
-	unsigned hw_opt[4];	/* other hardware options */
-	unsigned reserved[4];
-				/****** arbitrary data ***************/
-	unsigned data_size;	/* data buffer size */
-	void* data;		/* data buffer, e.g. firmware */
-	union			/****** protocol-specific ************/
-	{
-		wan_x25_conf_t x25;	/* X.25 configuration */
-		wan_ppp_conf_t ppp;	/* PPP configuration */
-		wan_fr_conf_t fr;	/* frame relay configuration */
-		wan_chdlc_conf_t chdlc;	/* Cisco HDLC configuration */
-	} u;
-} wandev_conf_t;
-
-/* 'config_id' definitions */
-#define	WANCONFIG_X25	101	/* X.25 link */
-#define	WANCONFIG_FR	102	/* frame relay link */
-#define	WANCONFIG_PPP	103	/* synchronous PPP link */
-#define WANCONFIG_CHDLC	104	/* Cisco HDLC Link */
-#define WANCONFIG_BSC	105	/* BiSync Streaming */
-#define WANCONFIG_HDLC	106	/* HDLC Support */
-#define WANCONFIG_MPPP  107	/* Multi Port PPP over RAW CHDLC */
-
-/*
- * Configuration options defines.
- */
-/* general options */
-#define	WANOPT_OFF	0
-#define	WANOPT_ON	1
-#define	WANOPT_NO	0
-#define	WANOPT_YES	1
-
-/* intercace options */
-#define	WANOPT_RS232	0
-#define	WANOPT_V35	1
-
-/* data encoding options */
-#define	WANOPT_NRZ	0
-#define	WANOPT_NRZI	1
-#define	WANOPT_FM0	2
-#define	WANOPT_FM1	3
-
-/* link type options */
-#define	WANOPT_POINTTOPOINT	0	/* RTS always active */
-#define	WANOPT_MULTIDROP	1	/* RTS is active when transmitting */
-
-/* clocking options */
-#define	WANOPT_EXTERNAL	0
-#define	WANOPT_INTERNAL	1
-
-/* station options */
-#define	WANOPT_DTE		0
-#define	WANOPT_DCE		1
-#define	WANOPT_CPE		0
-#define	WANOPT_NODE		1
-#define	WANOPT_SECONDARY	0
-#define	WANOPT_PRIMARY		1
-
-/* connection options */
-#define	WANOPT_PERMANENT	0	/* DTR always active */
-#define	WANOPT_SWITCHED		1	/* use DTR to setup link (dial-up) */
-#define	WANOPT_ONDEMAND		2	/* activate DTR only before sending */
-
-/* frame relay in-channel signalling */
-#define	WANOPT_FR_ANSI		1	/* ANSI T1.617 Annex D */
-#define	WANOPT_FR_Q933		2	/* ITU Q.933A */
-#define	WANOPT_FR_LMI		3	/* LMI */
-
-/* PPP IP Mode Options */
-#define	WANOPT_PPP_STATIC	0
-#define	WANOPT_PPP_HOST		1
-#define	WANOPT_PPP_PEER		2
-
-/* ASY Mode Options */
-#define WANOPT_ONE 		1
-#define WANOPT_TWO		2
-#define WANOPT_ONE_AND_HALF	3
-
-#define WANOPT_NONE	0
-#define WANOPT_ODD      1
-#define WANOPT_EVEN	2
-
-/* CHDLC Protocol Options */
-/* DF Commented out for now.
-
-#define WANOPT_CHDLC_NO_DCD		IGNORE_DCD_FOR_LINK_STAT
-#define WANOPT_CHDLC_NO_CTS		IGNORE_CTS_FOR_LINK_STAT
-#define WANOPT_CHDLC_NO_KEEPALIVE	IGNORE_KPALV_FOR_LINK_STAT
-*/
-
-/* Port options */
-#define WANOPT_PRI 0
-#define WANOPT_SEC 1
-/* read mode */
-#define	WANOPT_INTR	0
-#define WANOPT_POLL	1
-
-
-#define WANOPT_TTY_SYNC  0
-#define WANOPT_TTY_ASYNC 1
-/*----------------------------------------------------------------------------
- * WAN Link Status Info (for ROUTER_STAT IOCTL).
- */
-typedef struct wandev_stat
-{
-	unsigned state;		/* link state */
-	unsigned ndev;		/* number of configured interfaces */
-
-	/* link/interface configuration */
-	unsigned connection;	/* permanent/switched/on-demand */
-	unsigned media_type;	/* Frame relay/PPP/X.25/SDLC, etc. */
-	unsigned mtu;		/* max. transmit unit for this device */
-
-	/* physical level statistics */
-	unsigned modem_status;	/* modem status */
-	unsigned rx_frames;	/* received frames count */
-	unsigned rx_overruns;	/* receiver overrun error count */
-	unsigned rx_crc_err;	/* receive CRC error count */
-	unsigned rx_aborts;	/* received aborted frames count */
-	unsigned rx_bad_length;	/* unexpetedly long/short frames count */
-	unsigned rx_dropped;	/* frames discarded at device level */
-	unsigned tx_frames;	/* transmitted frames count */
-	unsigned tx_underruns;	/* aborted transmissions (underruns) count */
-	unsigned tx_timeouts;	/* transmission timeouts */
-	unsigned tx_rejects;	/* other transmit errors */
-
-	/* media level statistics */
-	unsigned rx_bad_format;	/* frames with invalid format */
-	unsigned rx_bad_addr;	/* frames with invalid media address */
-	unsigned tx_retries;	/* frames re-transmitted */
-	unsigned reserved[16];	/* reserved for future use */
-} wandev_stat_t;
 
 /* 'state' defines */
 enum wan_states
···
 	WAN_UNCONFIGURED,	/* link/channel is not configured */
 	WAN_DISCONNECTED,	/* link/channel is disconnected */
 	WAN_CONNECTING,		/* connection is in progress */
-	WAN_CONNECTED,		/* link/channel is operational */
-	WAN_LIMIT,		/* for verification only */
-	WAN_DUALPORT,		/* for Dual Port cards */
-	WAN_DISCONNECTING,
-	WAN_FT1_READY		/* FT1 Configurator Ready */
+	WAN_CONNECTED		/* link/channel is operational */
 };
-
-enum {
-	WAN_LOCAL_IP,
-	WAN_POINTOPOINT_IP,
-	WAN_NETMASK_IP,
-	WAN_BROADCAST_IP
-};
-
-/* 'modem_status' masks */
-#define	WAN_MODEM_CTS	0x0001	/* CTS line active */
-#define	WAN_MODEM_DCD	0x0002	/* DCD line active */
-#define	WAN_MODEM_DTR	0x0010	/* DTR line active */
-#define	WAN_MODEM_RTS	0x0020	/* RTS line active */
-
-/*----------------------------------------------------------------------------
- * WAN interface (logical channel) configuration (for ROUTER_IFNEW IOCTL).
- */
-typedef struct wanif_conf
-{
-	unsigned magic;			/* magic number */
-	unsigned config_id;		/* configuration identifier */
-	char name[WAN_IFNAME_SZ+1];	/* interface name, ASCIIZ */
-	char addr[WAN_ADDRESS_SZ+1];	/* media address, ASCIIZ */
-	char usedby[USED_BY_FIELD];	/* used by API or WANPIPE */
-	unsigned idle_timeout;		/* sec, before disconnecting */
-	unsigned hold_timeout;		/* sec, before re-connecting */
-	unsigned cir;			/* Committed Information Rate fwd,bwd*/
-	unsigned bc;			/* Committed Burst Size fwd, bwd */
-	unsigned be;			/* Excess Burst Size fwd, bwd */ 
-	unsigned char enable_IPX;	/* Enable or Disable IPX */
-	unsigned char inarp;		/* Send Inverse ARP requests Y/N */
-	unsigned inarp_interval;	/* sec, between InARP requests */
-	unsigned long network_number;	/* Network Number for IPX */
-	char mc;			/* Multicast on or off */
-	char local_addr[WAN_ADDRESS_SZ+1];/* local media address, ASCIIZ */
-	unsigned char port;		/* board port */
-	unsigned char protocol;		/* prococol used in this channel (TCPOX25 or X25) */
-	char pap;			/* PAP enabled or disabled */
-	char chap;			/* CHAP enabled or disabled */
-	unsigned char userid[511];	/* List of User Id */
-	unsigned char passwd[511];	/* List of passwords */
-	unsigned char sysname[31];	/* Name of the system */
-	unsigned char ignore_dcd;	/* Protocol options: */
-	unsigned char ignore_cts;	/*  Ignore these to determine */
-	unsigned char ignore_keepalive;	/*  link status (Yes or No) */
-	unsigned char hdlc_streaming;	/*  Hdlc streaming mode (Y/N) */
-	unsigned keepalive_tx_tmr;	/* transmit keepalive timer */
-	unsigned keepalive_rx_tmr;	/* receive  keepalive timer */
-	unsigned keepalive_err_margin;	/* keepalive_error_tolerance */
-	unsigned slarp_timer;		/* SLARP request timer */
-	unsigned char ttl;		/* Time To Live for UDP security */
-	char interface;			/* RS-232/V.35, etc. */
-	char clocking;			/* external/internal */
-	unsigned bps;			/* data transfer rate */
-	unsigned mtu;			/* maximum transmit unit size */
-	unsigned char if_down;		/* brind down interface when disconnected */
-	unsigned char gateway;		/* Is this interface a gateway */
-	unsigned char true_if_encoding;	/* Set the dev->type to true board protocol */
-
-	unsigned char asy_data_trans;     /* async API options */
-        unsigned char rts_hs_for_receive; /* async Protocol options */
-        unsigned char xon_xoff_hs_for_receive;
-	unsigned char xon_xoff_hs_for_transmit;
-	unsigned char dcd_hs_for_transmit;
-	unsigned char cts_hs_for_transmit;
-	unsigned char async_mode;
-	unsigned tx_bits_per_char;
-	unsigned rx_bits_per_char;
-	unsigned stop_bits;  
-	unsigned char parity;
- 	unsigned break_timer;
-        unsigned inter_char_timer;
-	unsigned rx_complete_length;
-	unsigned xon_char;
-	unsigned xoff_char;
-	unsigned char receive_only;	/*  no transmit buffering (Y/N) */
-} wanif_conf_t;
 
 #endif /* _UAPI_ROUTER_H */

net/wanrouter/Kconfig

···
-#
-# Configuration for WAN router
-#
-
-config WAN_ROUTER
-	tristate "WAN router (DEPRECATED)"
-	depends on EXPERIMENTAL
-	---help---
-	  Wide Area Networks (WANs), such as X.25, frame relay and leased
-	  lines, are used to interconnect Local Area Networks (LANs) over vast
-	  distances with data transfer rates significantly higher than those
-	  achievable with commonly used asynchronous modem connections.
-	  Usually, a quite expensive external device called a `WAN router' is
-	  needed to connect to a WAN.
-
-	  As an alternative, WAN routing can be built into the Linux kernel.
-	  With relatively inexpensive WAN interface cards available on the
-	  market, a perfectly usable router can be built for less than half
-	  the price of an external router.  If you have one of those cards and
-	  wish to use your Linux box as a WAN router, say Y here and also to
-	  the WAN driver for your card, below.  You will then need the
-	  wan-tools package which is available from <ftp://ftp.sangoma.com/>.
-
-	  To compile WAN routing support as a module, choose M here: the
-	  module will be called wanrouter.
-
-	  If unsure, say N.

net/wanrouter/Makefile

···
-#
-# Makefile for the Linux WAN router layer.
-#
-
-obj-$(CONFIG_WAN_ROUTER) += wanrouter.o
-
-wanrouter-y :=  wanproc.o wanmain.o

net/wanrouter/patchlevel

···
-2.2.1

net/wanrouter/wanmain.c

···
-/*****************************************************************************
-* wanmain.c	WAN Multiprotocol Router Module. Main code.
-*
-*		This module is completely hardware-independent and provides
-*		the following common services for the WAN Link Drivers:
-*		 o WAN device management (registering, unregistering)
-*		 o Network interface management
-*		 o Physical connection management (dial-up, incoming calls)
-*		 o Logical connection management (switched virtual circuits)
-*		 o Protocol encapsulation/decapsulation
-*
-* Author:	Gideon Hack
-*
-* Copyright:	(c) 1995-1999 Sangoma Technologies Inc.
-*
-*		This program is free software; you can redistribute it and/or
-*		modify it under the terms of the GNU General Public License
-*		as published by the Free Software Foundation; either version
-*		2 of the License, or (at your option) any later version.
-* ============================================================================
-* Nov 24, 2000  Nenad Corbic	Updated for 2.4.X kernels
-* Nov 07, 2000  Nenad Corbic	Fixed the Mulit-Port PPP for kernels 2.2.16 and
-*  				greater.
-* Aug 2,  2000  Nenad Corbic	Block the Multi-Port PPP from running on
-*  			        kernels 2.2.16 or greater.  The SyncPPP
-*  			        has changed.
-* Jul 13, 2000  Nenad Corbic	Added SyncPPP support
-* 				Added extra debugging in device_setup().
-* Oct 01, 1999  Gideon Hack     Update for s514 PCI card
-* Dec 27, 1996	Gene Kozin	Initial version (based on Sangoma's WANPIPE)
-* Jan 16, 1997	Gene Kozin	router_devlist made public
-* Jan 31, 1997  Alan Cox	Hacked it about a bit for 2.1
-* Jun 27, 1997  Alan Cox	realigned with vendor code
-* Oct 15, 1997  Farhan Thawar   changed wan_encapsulate to add a pad byte of 0
-* Apr 20, 1998	Alan Cox	Fixed 2.1 symbols
-* May 17, 1998  K. Baranowski	Fixed SNAP encapsulation in wan_encapsulate
-* Dec 15, 1998  Arnaldo Melo    support for firmwares of up to 128000 bytes
-*                               check wandev->setup return value
-* Dec 22, 1998  Arnaldo Melo    vmalloc/vfree used in device_setup to allocate
-*                               kernel memory and copy configuration data to
-*                               kernel space (for big firmwares)
-* Jun 02, 1999  Gideon Hack	Updates for Linux 2.0.X and 2.2.X kernels.
-*****************************************************************************/
-
-#include <linux/stddef.h>	/* offsetof(), etc. */
-#include <linux/capability.h>
-#include <linux/errno.h>	/* return codes */
-#include <linux/kernel.h>
-#include <linux/module.h>	/* support for loadable modules */
-#include <linux/slab.h>		/* kmalloc(), kfree() */
-#include <linux/mutex.h>
-#include <linux/mm.h>
-#include <linux/string.h>	/* inline mem*, str* functions */
-
-#include <asm/byteorder.h>	/* htons(), etc. */
-#include <linux/wanrouter.h>	/* WAN router API definitions */
-
-#include <linux/vmalloc.h>	/* vmalloc, vfree */
-#include <asm/uaccess.h>        /* copy_to/from_user */
-#include <linux/init.h>         /* __initfunc et al. */
-
-#define DEV_TO_SLAVE(dev)	(*((struct net_device **)netdev_priv(dev)))
-
-/*
- * 	Function Prototypes
- */
-
-/*
- *	WAN device IOCTL handlers
- */
-
-static DEFINE_MUTEX(wanrouter_mutex);
-static int wanrouter_device_setup(struct wan_device *wandev,
-				  wandev_conf_t __user *u_conf);
-static int wanrouter_device_stat(struct wan_device *wandev,
-				 wandev_stat_t __user *u_stat);
-static int wanrouter_device_shutdown(struct wan_device *wandev);
-static int wanrouter_device_new_if(struct wan_device *wandev,
-				   wanif_conf_t __user *u_conf);
-static int wanrouter_device_del_if(struct wan_device *wandev,
-				   char __user *u_name);
-
-/*
- *	Miscellaneous
- */
-
-static struct wan_device *wanrouter_find_device(char *name);
-static int wanrouter_delete_interface(struct wan_device *wandev, char *name);
-static void lock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags)
-	__acquires(lock);
-static void unlock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags)
-	__releases(lock);
-
-
-
-/*
- *	Global Data
- */
-
-static char wanrouter_fullname[]  = "Sangoma WANPIPE Router";
-static char wanrouter_copyright[] = "(c) 1995-2000 Sangoma Technologies Inc.";
-static char wanrouter_modname[] = ROUTER_NAME; /* short module name */
-struct wan_device* wanrouter_router_devlist; /* list of registered devices */
-
-/*
- *	Organize Unique Identifiers for encapsulation/decapsulation
- */
-
-#if 0
-static unsigned char wanrouter_oui_ether[] = { 0x00, 0x00, 0x00 };
-static unsigned char wanrouter_oui_802_2[] = { 0x00, 0x80, 0xC2 };
-#endif
-
-static int __init wanrouter_init(void)
-{
-	int err;
-
-	printk(KERN_INFO "%s v%u.%u %s\n",
-	       wanrouter_fullname, ROUTER_VERSION, ROUTER_RELEASE,
-	       wanrouter_copyright);
-
-	err = wanrouter_proc_init();
-	if (err)
-		printk(KERN_INFO "%s: can't create entry in proc filesystem!\n",
-		       wanrouter_modname);
-
-	return err;
-}
-
-static void __exit wanrouter_cleanup (void)
-{
-	wanrouter_proc_cleanup();
-}
-
-/*
- * This is just plain dumb.  We should move the bugger to drivers/net/wan,
- * slap it first in directory and make it module_init().  The only reason
- * for subsys_initcall() here is that net goes after drivers (why, BTW?)
- */
-subsys_initcall(wanrouter_init);
-module_exit(wanrouter_cleanup);
-
-/*
- * 	Kernel APIs
- */
-
-/*
- * 	Register WAN device.
- * 	o verify device credentials
- * 	o create an entry for the device in the /proc/net/router directory
- * 	o initialize internally maintained fields of the wan_device structure
- * 	o link device data space to a singly-linked list
- * 	o if it's the first device, then start kernel 'thread'
- * 	o increment module use count
- *
- * 	Return:
- *	0	Ok
- *	< 0	error.
- *
- * 	Context:	process
- */
-
-
-int register_wan_device(struct wan_device *wandev)
-{
-	int err, namelen;
-
-	if ((wandev == NULL) || (wandev->magic != ROUTER_MAGIC) ||
-	    (wandev->name == NULL))
-		return -EINVAL;
-
-	namelen = strlen(wandev->name);
-	if (!namelen || (namelen > WAN_DRVNAME_SZ))
-		return -EINVAL;
-
-	if (wanrouter_find_device(wandev->name))
-		return -EEXIST;
-
-#ifdef WANDEBUG
-	printk(KERN_INFO "%s: registering WAN device %s\n",
-	       wanrouter_modname, wandev->name);
-#endif
-
-	/*
-	 *	Register /proc directory entry
-	 */
-	err = wanrouter_proc_add(wandev);
-	if (err) {
-		printk(KERN_INFO
-			"%s: can't create /proc/net/router/%s entry!\n",
-			wanrouter_modname, wandev->name);
-		return err;
-	}
-
-	/*
-	 *	Initialize fields of the wan_device structure maintained by the
-	 *	router and update local data.
-	 */
-
-	wandev->ndev = 0;
-	wandev->dev  = NULL;
-	wandev->next = wanrouter_router_devlist;
-	wanrouter_router_devlist = wandev;
-	return 0;
-}
-
-/*
- *	Unregister WAN device.
- *	o shut down device
- *	o unlink device data space from the linked list
- *	o delete device entry in the /proc/net/router directory
- *	o decrement module use count
- *
- *	Return:		0	Ok
- *			<0	error.
- *	Context:	process
- */
-
-
-int unregister_wan_device(char *name)
-{
-	struct wan_device *wandev, *prev;
-
-	if (name == NULL)
-		return -EINVAL;
-
-	for (wandev = wanrouter_router_devlist, prev = NULL;
-		wandev && strcmp(wandev->name, name);
-		prev = wandev, wandev = wandev->next)
-		;
-	if (wandev == NULL)
-		return -ENODEV;
-
-#ifdef WANDEBUG
-	printk(KERN_INFO "%s: unregistering WAN device %s\n",
-	       wanrouter_modname, name);
-#endif
-
-	if (wandev->state != WAN_UNCONFIGURED)
-		wanrouter_device_shutdown(wandev);
-
-	if (prev)
-		prev->next = wandev->next;
-	else
-		wanrouter_router_devlist = wandev->next;
-
-	wanrouter_proc_delete(wandev);
-	return 0;
-}
-
-#if 0
-
-/*
- *	Encapsulate packet.
- *
- *	Return:	encapsulation header size
- *		< 0	- unsupported Ethertype
- *
- *	Notes:
- *	1. This function may be called on interrupt context.
- */
-
-
-int wanrouter_encapsulate(struct sk_buff *skb, struct net_device *dev,
-			  unsigned short type)
-{
-	int hdr_len = 0;
-
-	switch (type) {
-	case ETH_P_IP:		/* IP datagram encapsulation */
-		hdr_len += 1;
-		skb_push(skb, 1);
-		skb->data[0] = NLPID_IP;
-		break;
-
-	case ETH_P_IPX:		/* SNAP encapsulation */
-	case ETH_P_ARP:
-		hdr_len += 7;
-		skb_push(skb, 7);
-		skb->data[0] = 0;
-		skb->data[1] = NLPID_SNAP;
-		skb_copy_to_linear_data_offset(skb, 2, wanrouter_oui_ether,
-					       sizeof(wanrouter_oui_ether));
-		*((unsigned short*)&skb->data[5]) = htons(type);
-		break;
-
-	default:		/* Unknown packet type */
-		printk(KERN_INFO
-			"%s: unsupported Ethertype 0x%04X on interface %s!\n",
-			wanrouter_modname, type, dev->name);
-		hdr_len = -EINVAL;
-	}
-	return hdr_len;
-}
-
-
-/*
- *	Decapsulate packet.
- *
- *	Return:	Ethertype (in network order)
- *			0	unknown encapsulation
- *
- *	Notes:
- *	1. This function may be called on interrupt context.
- */
-
-
-__be16 wanrouter_type_trans(struct sk_buff *skb, struct net_device *dev)
-{
-	int cnt = skb->data[0] ? 0 : 1;	/* there may be a pad present */
-	__be16 ethertype;
-
-	switch (skb->data[cnt]) {
-	case NLPID_IP:		/* IP datagramm */
-		ethertype = htons(ETH_P_IP);
-		cnt += 1;
-		break;
-
-	case NLPID_SNAP:	/* SNAP encapsulation */
-		if (memcmp(&skb->data[cnt + 1], wanrouter_oui_ether,
-			   sizeof(wanrouter_oui_ether))){
-			printk(KERN_INFO
-				"%s: unsupported SNAP OUI %02X-%02X-%02X "
-				"on interface %s!\n", wanrouter_modname,
-				skb->data[cnt+1], skb->data[cnt+2],
-				skb->data[cnt+3], dev->name);
-			return 0;
-		}
-		ethertype = *((__be16*)&skb->data[cnt+4]);
-		cnt += 6;
-		break;
-
-	/* add other protocols, e.g. CLNP, ESIS, ISIS, if needed */
-
-	default:
-		printk(KERN_INFO
-			"%s: unsupported NLPID 0x%02X on interface %s!\n",
-			wanrouter_modname, skb->data[cnt], dev->name);
-		return 0;
-	}
-	skb->protocol = ethertype;
-	skb->pkt_type = PACKET_HOST;	/*	Physically point to point */
-	skb_pull(skb, cnt);
-	skb_reset_mac_header(skb);
-	return ethertype;
-}
-
-#endif  /*  0  */
-
-/*
- *	WAN device IOCTL.
- *	o find WAN device associated with this node
- *	o execute requested action or pass command to the device driver
- */
-
-long wanrouter_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct inode *inode = file->f_path.dentry->d_inode;
-	int err = 0;
-	struct proc_dir_entry *dent;
-	struct wan_device *wandev;
-	void __user *data = (void __user *)arg;
-
-	if (!capable(CAP_NET_ADMIN))
-		return -EPERM;
-
-	if ((cmd >> 8) != ROUTER_IOCTL)
-		return -EINVAL;
-
-	dent = PDE(inode);
-	if ((dent == NULL) || (dent->data == NULL))
-		return -EINVAL;
-
-	wandev = dent->data;
-	if (wandev->magic != ROUTER_MAGIC)
-		return -EINVAL;
-
-	mutex_lock(&wanrouter_mutex);
-	switch (cmd) {
-	case ROUTER_SETUP:
-		err = wanrouter_device_setup(wandev, data);
-		break;
-
-	case ROUTER_DOWN:
-		err = wanrouter_device_shutdown(wandev);
-		break;
-
-	case ROUTER_STAT:
-		err = wanrouter_device_stat(wandev, data);
-		break;
-
-	case ROUTER_IFNEW:
-		err = wanrouter_device_new_if(wandev, data);
-		break;
-
-	case ROUTER_IFDEL:
-		err = wanrouter_device_del_if(wandev, data);
-		break;
-
-	case ROUTER_IFSTAT:
-		break;
-
-	default:
-		if ((cmd >= ROUTER_USER) &&
-		    (cmd <= ROUTER_USER_MAX) &&
-		    wandev->ioctl)
-			err = wandev->ioctl(wandev, cmd, arg);
-		else err = -EINVAL;
-	}
-	mutex_unlock(&wanrouter_mutex);
-	return err;
-}
-
-/*
- *	WAN Driver IOCTL Handlers
- */
-
-/*
- *	Setup WAN link device.
- *	o verify user address space
- *	o allocate kernel memory and copy configuration data to kernel space
- *	o if configuration data includes extension, copy it to kernel space too
- *	o call driver's setup() entry point
- */
-
-static int wanrouter_device_setup(struct wan_device *wandev,
-				  wandev_conf_t __user *u_conf)
-{
-	void *data = NULL;
-	wandev_conf_t *conf;
-	int err = -EINVAL;
-
-	if (wandev->setup == NULL) {	/* Nothing to do ? */
-		printk(KERN_INFO "%s: ERROR, No setup script: wandev->setup()\n",
-				wandev->name);
-		return 0;
-	}
-
-	conf = kmalloc(sizeof(wandev_conf_t), GFP_KERNEL);
-	if (conf == NULL){
-		printk(KERN_INFO "%s: ERROR, Failed to allocate kernel memory !\n",
-				wandev->name);
-		return -ENOBUFS;
-	}
-
-	if (copy_from_user(conf, u_conf, sizeof(wandev_conf_t))) {
-		printk(KERN_INFO "%s: Failed to copy user config data to kernel space!\n",
-				wandev->name);
-		kfree(conf);
-		return -EFAULT;
-	}
-
-	if (conf->magic != ROUTER_MAGIC) {
-		kfree(conf);
-		printk(KERN_INFO "%s: ERROR, Invalid MAGIC Number\n",
-				wandev->name);
-		return -EINVAL;
-	}
-
-	if (conf->data_size && conf->data) {
-		if (conf->data_size > 128000) {
-			printk(KERN_INFO
-			    "%s: ERROR, Invalid firmware data size %i !\n",
-					wandev->name, conf->data_size);
-			kfree(conf);
-			return -EINVAL;
-		}
-
-		data = vmalloc(conf->data_size);
-		if (!data) {
-			printk(KERN_INFO
-				"%s: ERROR, Failed allocate kernel memory !\n",
-				wandev->name);
-			kfree(conf);
-			return -ENOBUFS;
-		}
-		if (!copy_from_user(data, conf->data, conf->data_size)) {
-			conf->data = data;
-			err = wandev->setup(wandev, conf);
-		} else {
-			printk(KERN_INFO
-			     "%s: ERROR, Failed to copy from user data !\n",
-			       wandev->name);
-			err = -EFAULT;
-		}
-		vfree(data);
-	} else {
-		printk(KERN_INFO
-		    "%s: ERROR, No firmware found ! Firmware size = %i !\n",
-				wandev->name, conf->data_size);
-	}
-
-	kfree(conf);
-	return err;
-}
-
-/*
- *	Shutdown WAN device.
- *	o delete all not opened logical channels for this device
- *	o call driver's shutdown() entry point
- */
-
-static int wanrouter_device_shutdown(struct wan_device *wandev)
-{
-	struct net_device *dev;
-	int err=0;
-
-	if (wandev->state == WAN_UNCONFIGURED)
-		return 0;
-
-	printk(KERN_INFO "\n%s: Shutting Down!\n",wandev->name);
-
-	for (dev = wandev->dev; dev;) {
-		err = wanrouter_delete_interface(wandev, dev->name);
-		if (err)
-			return err;
-		/* The above function deallocates the current dev
-		 * structure. Therefore, we cannot use netdev_priv(dev)
-		 * as the next element: wandev->dev points to the
-		 * next element */
-		dev = wandev->dev;
-	}
-
-	if (wandev->ndev)
-		return -EBUSY;	/* there are opened interfaces  */
-
-	if (wandev->shutdown)
-		err=wandev->shutdown(wandev);
-
-	return err;
-}
-
-/*
- *	Get WAN device status & statistics.
- */
-
-static int wanrouter_device_stat(struct wan_device *wandev,
-				 wandev_stat_t __user *u_stat)
-{
-	wandev_stat_t stat;
-
-	memset(&stat, 0, sizeof(stat));
-
-	/* Ask device driver to update device statistics */
-	if ((wandev->state != WAN_UNCONFIGURED) && wandev->update)
-		wandev->update(wandev);
-
-	/* Fill out structure */
-	stat.ndev  = wandev->ndev;
-	stat.state = wandev->state;
-
-	if (copy_to_user(u_stat, &stat, sizeof(stat)))
-		return -EFAULT;
-
-	return 0;
-}
-
-/*
- *	Create new WAN interface.
- *	o verify user address space
- *	o copy configuration data to kernel address space
- *	o allocate network interface data space
- *	o call driver's new_if() entry point
- *	o make sure there is no interface name conflict
- *	o register network interface
- */
-
-static int wanrouter_device_new_if(struct wan_device *wandev,
-				   wanif_conf_t __user *u_conf)
-{
-	wanif_conf_t *cnf;
-	struct net_device *dev = NULL;
-	int err;
-
-	if ((wandev->state == WAN_UNCONFIGURED) || (wandev->new_if == NULL))
-		return -ENODEV;
-
-	cnf = kmalloc(sizeof(wanif_conf_t), GFP_KERNEL);
-	if (!cnf)
-		return -ENOBUFS;
-
-	err = -EFAULT;
-	if (copy_from_user(cnf, u_conf, sizeof(wanif_conf_t)))
-		goto out;
-
-	err = -EINVAL;
-	if (cnf->magic != ROUTER_MAGIC)
-		goto out;
-
-	if (cnf->config_id == WANCONFIG_MPPP) {
-		printk(KERN_INFO "%s: Wanpipe Mulit-Port PPP support has not been compiled in!\n",
-				wandev->name);
-		err = -EPROTONOSUPPORT;
-		goto out;
-	} else {
-		err = wandev->new_if(wandev, dev, cnf);
-	}
-
-	if (!err) {
-		/* Register network interface. This will invoke init()
-		 * function supplied by the driver.  If device registered
-		 * successfully, add it to the interface list.
-		 */
-
-#ifdef WANDEBUG
-		printk(KERN_INFO "%s: registering interface %s...\n",
-		       wanrouter_modname, dev->name);
-#endif
-
-		err = register_netdev(dev);
-		if (!err) {
-			struct net_device *slave = NULL;
-			unsigned long smp_flags=0;
-
-			lock_adapter_irq(&wandev->lock, &smp_flags);
-
-			if (wandev->dev == NULL) {
-				wandev->dev = dev;
-			} else {
-				for (slave=wandev->dev;
-				     DEV_TO_SLAVE(slave);
-				     slave = DEV_TO_SLAVE(slave))
-					DEV_TO_SLAVE(slave) = dev;
-			}
-			++wandev->ndev;
-
-			unlock_adapter_irq(&wandev->lock, &smp_flags);
-			err = 0;	/* done !!! */
-			goto out;
-		}
-		if (wandev->del_if)
-			wandev->del_if(wandev, dev);
-		free_netdev(dev);
-	}
-
-out:
-	kfree(cnf);
-	return err;
-}
-
-
-/*
- *	Delete WAN logical channel.
- *	 o verify user address space
- *	 o copy configuration data to kernel address space
- */
-
-static int wanrouter_device_del_if(struct wan_device *wandev, char __user *u_name)
-{
-	char name[WAN_IFNAME_SZ + 1];
-	int err = 0;
-
-	if (wandev->state == WAN_UNCONFIGURED)
-		return -ENODEV;
-
-	memset(name, 0, sizeof(name));
-
-	if (copy_from_user(name, u_name, WAN_IFNAME_SZ))
-		return -EFAULT;
-
-	err = wanrouter_delete_interface(wandev, name);
-	if (err)
-		return err;
-
-	/* If last interface being deleted, shutdown card
-	 * This helps with administration at leaf nodes
-	 * (You can tell if the person at the other end of the phone
-	 * has an interface configured) and avoids DoS vulnerabilities
-	 * in binary driver files - this fixes a problem with the current
-	 * Sangoma driver going into strange states when all the network
-	 * interfaces are deleted and the link irrecoverably disconnected.
-	 */
-
-	if (!wandev->ndev && wandev->shutdown)
-		err = wandev->shutdown(wandev);
-
-	return err;
-}
-
-/*
- *	Miscellaneous Functions
- */
-
-/*
- *	Find WAN device by name.
- *	Return pointer to the WAN device data space or NULL if device not found.
- */
-
-static struct wan_device *wanrouter_find_device(char *name)
-{
-	struct wan_device *wandev;
-
-	for (wandev = wanrouter_router_devlist;
-	     wandev && strcmp(wandev->name, name);
-		wandev = wandev->next);
-	return wandev;
-}
-
-/*
- *	Delete WAN logical channel identified by its name.
- *	o find logical channel by its name
- *	o call driver's del_if() entry point
- *	o unregister network interface
- *	o unlink channel data space from linked list of channels
- *	o release channel data space
- *
- *	Return:	0		success
- *		-ENODEV		channel not found.
- *		-EBUSY		interface is open
- *
- *	Note: If (force != 0), then device will be destroyed even if interface
- *	associated with it is open. It's caller's responsibility to make
- *	sure that opened interfaces are not removed!
- */
-
-static int wanrouter_delete_interface(struct wan_device *wandev, char *name)
-{
-	struct net_device *dev = NULL, *prev = NULL;
-	unsigned long smp_flags=0;
-
-	lock_adapter_irq(&wandev->lock, &smp_flags);
-	dev = wandev->dev;
-	prev = NULL;
-	while (dev && strcmp(name, dev->name)) {
-		struct net_device **slave = netdev_priv(dev);
-		prev = dev;
-		dev = *slave;
-	}
-	unlock_adapter_irq(&wandev->lock, &smp_flags);
-
-	if (dev == NULL)
-		return -ENODEV;	/* interface not found */
-
-	if (netif_running(dev))
-		return -EBUSY;	/* interface in use */
-
-	if (wandev->del_if)
-		wandev->del_if(wandev, dev);
-
-	lock_adapter_irq(&wandev->lock, &smp_flags);
-	if (prev) {
-		struct net_device **prev_slave = netdev_priv(prev);
-		struct net_device **slave = netdev_priv(dev);
-
-		*prev_slave = *slave;
-	} else {
-		struct net_device **slave = netdev_priv(dev);
-		wandev->dev = *slave;
-	}
-	--wandev->ndev;
-	unlock_adapter_irq(&wandev->lock, &smp_flags);
-
-	printk(KERN_INFO "%s: unregistering '%s'\n", wandev->name, dev->name);
-
-	unregister_netdev(dev);
-
-	free_netdev(dev);
-
-	return 0;
-}
-
-static void lock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags)
-	__acquires(lock)
-{
-	spin_lock_irqsave(lock, *smp_flags);
-}
-
-
-static void unlock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags)
-	__releases(lock)
-{
-	spin_unlock_irqrestore(lock, *smp_flags);
-}
-
-EXPORT_SYMBOL(register_wan_device);
-EXPORT_SYMBOL(unregister_wan_device);
-
-MODULE_LICENSE("GPL");
-
-/*
- *	End
- */

net/wanrouter/wanproc.c

···
-/*****************************************************************************
-* wanproc.c	WAN Router Module. /proc filesystem interface.
-*
-*		This module is completely hardware-independent and provides
-*		access to the router using Linux /proc filesystem.
-*
-* Author: 	Gideon Hack
-*
-* Copyright:	(c) 1995-1999 Sangoma Technologies Inc.
-*
-*		This program is free software; you can redistribute it and/or
-*		modify it under the terms of the GNU General Public License
-*		as published by the Free Software Foundation; either version
-*		2 of the License, or (at your option) any later version.
-* ============================================================================
-* Jun 02, 1999  Gideon Hack	Updates for Linux 2.2.X kernels.
-* Jun 29, 1997	Alan Cox	Merged with 1.0.3 vendor code
-* Jan 29, 1997	Gene Kozin	v1.0.1. Implemented /proc read routines
-* Jan 30, 1997	Alan Cox	Hacked around for 2.1
-* Dec 13, 1996	Gene Kozin	Initial version (based on Sangoma's WANPIPE)
-*****************************************************************************/
-
-#include <linux/init.h>		/* __initfunc et al. */
-#include <linux/stddef.h>	/* offsetof(), etc. */
-#include <linux/errno.h>	/* return codes */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/wanrouter.h>	/* WAN router API definitions */
-#include <linux/seq_file.h>
-#include <linux/mutex.h>
-
-#include <net/net_namespace.h>
-#include <asm/io.h>
-
-#define PROC_STATS_FORMAT "%30s: %12lu\n"
-
-/****** Defines and Macros **************************************************/
-
-#define PROT_DECODE(prot) ((prot == WANCONFIG_FR) ? " FR" :\
-			      (prot == WANCONFIG_X25) ? " X25" : \
-				 (prot == WANCONFIG_PPP) ? " PPP" : \
-				    (prot == WANCONFIG_CHDLC) ? " CHDLC": \
-				       (prot == WANCONFIG_MPPP) ? " MPPP" : \
-					   " Unknown" )
-
-/****** Function Prototypes *************************************************/
-
-#ifdef CONFIG_PROC_FS
-
-/* Miscellaneous */
-
-/*
- *	Structures for interfacing with the /proc filesystem.
- *	Router creates its own directory /proc/net/router with the following
- *	entries:
- *	config		device configuration
- *	status		global device statistics
- *	<device>	entry for each WAN device
- */
-
-/*
- *	Generic /proc/net/router/<file> file and inode operations
- */
-
-/*
- *	/proc/net/router
- */
-
-static DEFINE_MUTEX(config_mutex);
-static struct proc_dir_entry *proc_router;
-
-/* Strings */
-
-/*
- *	Interface functions
- */
-
-/****** Proc filesystem entry points ****************************************/
-
-/*
- *	Iterator
- */
-static void *r_start(struct seq_file *m, loff_t *pos)
-{
-	struct wan_device *wandev;
-	loff_t l = *pos;
-
-	mutex_lock(&config_mutex);
-	if (!l--)
-		return SEQ_START_TOKEN;
-	for (wandev = wanrouter_router_devlist; l-- && wandev;
-	     wandev = wandev->next)
-		;
-	return wandev;
-}
-
-static void *r_next(struct seq_file *m, void *v, loff_t *pos)
-{
-	struct wan_device *wandev = v;
-	(*pos)++;
-	return (v == SEQ_START_TOKEN) ? wanrouter_router_devlist : wandev->next;
-}
-
-static void r_stop(struct seq_file *m, void *v)
-{
-	mutex_unlock(&config_mutex);
-}
-
-static int config_show(struct seq_file *m, void *v)
-{
-	struct wan_device *p = v;
-	if (v == SEQ_START_TOKEN) {
-		seq_puts(m, "Device name    | port |IRQ|DMA|  mem.addr  |"
-			    "mem.size|option1|option2|option3|option4\n");
-		return 0;
-	}
-	if (!p->state)
-		return 0;
-	seq_printf(m, "%-15s|0x%-4X|%3u|%3u| 0x%-8lX |0x%-6X|%7u|%7u|%7u|%7u\n",
-			p->name, p->ioport, p->irq, p->dma, p->maddr, p->msize,
-			p->hw_opt[0], p->hw_opt[1], p->hw_opt[2], p->hw_opt[3]);
-	return 0;
-}
-
-static int status_show(struct seq_file *m, void *v)
-{
-	struct wan_device *p = v;
-	if (v == SEQ_START_TOKEN) {
-		seq_puts(m, "Device name    |protocol|station|interface|"
-			    "clocking|baud rate| MTU |ndev|link state\n");
-		return 0;
-	}
-	if (!p->state)
-		return 0;
-	seq_printf(m, "%-15s|%-8s| %-7s| %-9s|%-8s|%9u|%5u|%3u |",
-		p->name,
-		PROT_DECODE(p->config_id),
-		p->config_id == WANCONFIG_FR ?
-			(p->station ? "Node" : "CPE") :
-			(p->config_id == WANCONFIG_X25 ?
-			(p->station ? "DCE" : "DTE") :
-			("N/A")),
-		p->interface ? "V.35" : "RS-232",
-		p->clocking ? "internal" : "external",
-		p->bps,
-		p->mtu,
-		p->ndev);
-
-	switch (p->state) {
-	case WAN_UNCONFIGURED:
-		seq_printf(m, "%-12s\n", "unconfigured");
-		break;
-	case WAN_DISCONNECTED:
-		seq_printf(m, "%-12s\n", "disconnected");
-		break;
-	case WAN_CONNECTING:
-		seq_printf(m, "%-12s\n", "connecting");
-		break;
-	case WAN_CONNECTED:
-		seq_printf(m, "%-12s\n", "connected");
-		break;
-	default:
-		seq_printf(m, "%-12s\n", "invalid");
-		break;
-	}
-	return 0;
-}
-
-static const struct seq_operations config_op = {
-	.start	= r_start,
-	.next	= r_next,
-	.stop	= r_stop,
-	.show	= config_show,
-};
-
-static const struct seq_operations status_op = {
-	.start	= r_start,
-	.next	= r_next,
-	.stop	= r_stop,
-	.show	= status_show,
-};
-
-static int config_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &config_op);
-}
-
-static int status_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &status_op);
-}
-
-static const struct file_operations config_fops = {
-	.owner	 = THIS_MODULE,
-	.open	 = config_open,
-	.read	 = seq_read,
-	.llseek	 = seq_lseek,
-	.release = seq_release,
-};
-
-static const struct file_operations status_fops = {
-	.owner	 = THIS_MODULE,
-	.open	 = status_open,
-	.read	 = seq_read,
-	.llseek	 = seq_lseek,
-	.release = seq_release,
-};
-
-static int wandev_show(struct seq_file *m, void *v)
-{
-	struct wan_device *wandev = m->private;
-
-	if (wandev->magic != ROUTER_MAGIC)
-		return 0;
-
-	if (!wandev->state) {
-		seq_puts(m, "device is not configured!\n");
-		return 0;
-	}
-
-	/* Update device statistics */
-	if (wandev->update) {
-		int err = wandev->update(wandev);
-		if (err == -EAGAIN) {
-			seq_puts(m, "Device is busy!\n");
-			return 0;
-		}
-		if (err) {
-			seq_puts(m, "Device is not configured!\n");
-			return 0;
-		}
-	}
-
-	seq_printf(m, PROC_STATS_FORMAT,
-		"total packets received", wandev->stats.rx_packets);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"total packets transmitted", wandev->stats.tx_packets);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"total bytes received", wandev->stats.rx_bytes);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"total bytes transmitted", wandev->stats.tx_bytes);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"bad packets received", wandev->stats.rx_errors);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"packet transmit problems", wandev->stats.tx_errors);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"received frames dropped", wandev->stats.rx_dropped);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"transmit frames dropped", wandev->stats.tx_dropped);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"multicast packets received", wandev->stats.multicast);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"transmit collisions", wandev->stats.collisions);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"receive length errors", wandev->stats.rx_length_errors);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"receiver overrun errors", wandev->stats.rx_over_errors);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"CRC errors", wandev->stats.rx_crc_errors);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"frame format errors (aborts)", wandev->stats.rx_frame_errors);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"receiver fifo overrun", wandev->stats.rx_fifo_errors);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"receiver missed packet", wandev->stats.rx_missed_errors);
-	seq_printf(m, PROC_STATS_FORMAT,
-		"aborted frames transmitted", wandev->stats.tx_aborted_errors);
-	return 0;
-}
-
-static int wandev_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, wandev_show, PDE(inode)->data);
-}
-
-static const struct file_operations wandev_fops = {
-	.owner	 = THIS_MODULE,
-	.open	 = wandev_open,
-	.read	 = seq_read,
-	.llseek	 = seq_lseek,
-	.release = single_release,
-	.unlocked_ioctl  = wanrouter_ioctl,
-};
-
-/*
- *	Initialize router proc interface.
- */
-
-int __init wanrouter_proc_init(void)
-{
-	struct proc_dir_entry *p;
-	proc_router = proc_mkdir(ROUTER_NAME, init_net.proc_net);
-	if (!proc_router)
-		goto fail;
-
-	p = proc_create("config", S_IRUGO, proc_router, &config_fops);
-	if (!p)
-		goto fail_config;
-	p = proc_create("status", S_IRUGO, proc_router, &status_fops);
-	if (!p)
-		goto fail_stat;
-	return 0;
-fail_stat:
-	remove_proc_entry("config", proc_router);
-fail_config:
-	remove_proc_entry(ROUTER_NAME, init_net.proc_net);
-fail:
-	return -ENOMEM;
-}
-
-/*
- *	Clean up router proc interface.
- */
-
-void wanrouter_proc_cleanup(void)
-{
-	remove_proc_entry("config", proc_router);
-	remove_proc_entry("status", proc_router);
-	remove_proc_entry(ROUTER_NAME, init_net.proc_net);
-}
-
-/*
- *	Add directory entry for WAN device.
- */
-
-int wanrouter_proc_add(struct wan_device* wandev)
-{
-	if (wandev->magic != ROUTER_MAGIC)
-		return -EINVAL;
-
-	wandev->dent = proc_create(wandev->name, S_IRUGO,
-				   proc_router, &wandev_fops);
-	if (!wandev->dent)
-		return -ENOMEM;
-	wandev->dent->data	= wandev;
-	return 0;
-}
-
-/*
- *	Delete directory entry for WAN device.
- */
-int wanrouter_proc_delete(struct wan_device* wandev)
-{
-	if (wandev->magic != ROUTER_MAGIC)
-		return -EINVAL;
-	remove_proc_entry(wandev->name, proc_router);
-	return 0;
-}
-
-#else
-
-/*
- *	No /proc - output stubs
- */
-
-int __init wanrouter_proc_init(void)
-{
-	return 0;
-}
-
-void wanrouter_proc_cleanup(void)
-{
-}
-
-int wanrouter_proc_add(struct wan_device *wandev)
-{
-	return 0;
-}
-
-int wanrouter_proc_delete(struct wan_device *wandev)
-{
-	return 0;
-}
-
-#endif
-
-/*
- *	End
- */
-