aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wan/sdla_chdlc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wan/sdla_chdlc.c')
-rw-r--r--drivers/net/wan/sdla_chdlc.c4428
1 files changed, 0 insertions, 4428 deletions
diff --git a/drivers/net/wan/sdla_chdlc.c b/drivers/net/wan/sdla_chdlc.c
deleted file mode 100644
index 496d29237e9..00000000000
--- a/drivers/net/wan/sdla_chdlc.c
+++ /dev/null
@@ -1,4428 +0,0 @@
-/*****************************************************************************
-* sdla_chdlc.c WANPIPE(tm) Multiprotocol WAN Link Driver. Cisco HDLC module.
-*
-* Authors: Nenad Corbic <ncorbic@sangoma.com>
-* Gideon Hack
-*
-* Copyright: (c) 1995-2001 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.
-* ============================================================================
-* Feb 28, 2001 Nenad Corbic Updated if_tx_timeout() routine for
-* 2.4.X kernels.
-* Jan 25, 2001 Nenad Corbic Added a TTY Sync serial driver over the
-* HDLC streaming protocol
-* Added a TTY Async serial driver over the
-* Async protocol.
-* Dec 15, 2000 Nenad Corbic Updated for 2.4.X Kernel support
-* Nov 13, 2000 Nenad Corbic Added true interface type encoding option.
-* Tcpdump doesn't support CHDLC inteface
-* types, to fix this "true type" option will set
-* the interface type to RAW IP mode.
-* Nov 07, 2000 Nenad Corbic Added security features for UDP debugging:
-* Deny all and specify allowed requests.
-* Jun 20, 2000 Nenad Corbic Fixed the API IP ERROR bug. Caused by the
-* latest update.
-* May 09, 2000 Nenad Corbic Option to bring down an interface
-* upon disconnect.
-* Mar 23, 2000 Nenad Corbic Improved task queue, bh handling.
-* Mar 16, 2000 Nenad Corbic Fixed the SLARP Dynamic IP addressing.
-* Mar 06, 2000 Nenad Corbic Bug Fix: corrupted mbox recovery.
-* Feb 10, 2000 Gideon Hack Added ASYNC support.
-* Feb 09, 2000 Nenad Corbic Fixed two shutdown bugs in update() and
-* if_stats() functions.
-* Jan 24, 2000 Nenad Corbic Fixed a startup wanpipe state racing,
-* condition between if_open and isr.
-* Jan 10, 2000 Nenad Corbic Added new socket API support.
-* Dev 15, 1999 Nenad Corbic Fixed up header files for 2.0.X kernels
-* Nov 20, 1999 Nenad Corbic Fixed zero length API bug.
-* Sep 30, 1999 Nenad Corbic Fixed dynamic IP and route setup.
-* Sep 23, 1999 Nenad Corbic Added SMP support, fixed tracing
-* Sep 13, 1999 Nenad Corbic Split up Port 0 and 1 into separate devices.
-* Jun 02, 1999 Gideon Hack Added support for the S514 adapter.
-* Oct 30, 1998 Jaspreet Singh Added Support for CHDLC API (HDLC STREAMING).
-* Oct 28, 1998 Jaspreet Singh Added Support for Dual Port CHDLC.
-* Aug 07, 1998 David Fong Initial version.
-*****************************************************************************/
-
-#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/string.h> /* inline memset(), etc. */
-#include <linux/slab.h> /* kmalloc(), kfree() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/if_arp.h> /* ARPHRD_* defines */
-
-
-#include <asm/uaccess.h>
-#include <linux/inetdevice.h>
-#include <linux/netdevice.h>
-
-#include <linux/in.h> /* sockaddr_in */
-#include <linux/inet.h>
-#include <linux/if.h>
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <linux/sdlapci.h>
-#include <asm/io.h>
-
-#include <linux/sdla_chdlc.h> /* CHDLC firmware API definitions */
-#include <linux/sdla_asy.h> /* CHDLC (async) API definitions */
-
-#include <linux/if_wanpipe_common.h> /* Socket Driver common area */
-#include <linux/if_wanpipe.h>
-
-/* TTY Includes */
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial.h>
-
-
-/****** Defines & Macros ****************************************************/
-
-/* reasons for enabling the timer interrupt on the adapter */
-#define TMR_INT_ENABLED_UDP 0x01
-#define TMR_INT_ENABLED_UPDATE 0x02
-#define TMR_INT_ENABLED_CONFIG 0x10
-
-#define MAX_IP_ERRORS 10
-
-#define TTY_CHDLC_MAX_MTU 2000
-#define CHDLC_DFLT_DATA_LEN 1500 /* default MTU */
-#define CHDLC_HDR_LEN 1
-
-#define CHDLC_API 0x01
-
-#define PORT(x) (x == 0 ? "PRIMARY" : "SECONDARY" )
-#define MAX_BH_BUFF 10
-
-//#define PRINT_DEBUG
-#ifdef PRINT_DEBUG
-#define dbg_printk(format, a...) printk(format, ## a)
-#else
-#define dbg_printk(format, a...)
-#endif
-
-/******Data Structures*****************************************************/
-
-/* This structure is placed in the private data area of the device structure.
- * The card structure used to occupy the private area but now the following
- * structure will incorporate the card structure along with CHDLC specific data
- */
-
-typedef struct chdlc_private_area
-{
- wanpipe_common_t common;
- sdla_t *card;
- int TracingEnabled; /* For enabling Tracing */
- unsigned long curr_trace_addr; /* Used for Tracing */
- unsigned long start_trace_addr;
- unsigned long end_trace_addr;
- unsigned long base_addr_trace_buffer;
- unsigned long end_addr_trace_buffer;
- unsigned short number_trace_elements;
- unsigned available_buffer_space;
- unsigned long router_start_time;
- unsigned char route_status;
- unsigned char route_removed;
- unsigned long tick_counter; /* For 5s timeout counter */
- unsigned long router_up_time;
- u32 IP_address; /* IP addressing */
- u32 IP_netmask;
- u32 ip_local;
- u32 ip_remote;
- u32 ip_local_tmp;
- u32 ip_remote_tmp;
- u8 ip_error;
- u8 config_chdlc;
- u8 config_chdlc_timeout;
- unsigned char mc; /* Mulitcast support on/off */
- unsigned short udp_pkt_lgth; /* udp packet processing */
- char udp_pkt_src;
- char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
- unsigned short timer_int_enabled;
- char update_comms_stats; /* updating comms stats */
-
- bh_data_t *bh_head; /* Circular buffer for chdlc_bh */
- unsigned long tq_working;
- volatile int bh_write;
- volatile int bh_read;
- atomic_t bh_buff_used;
-
- unsigned char interface_down;
-
- /* Polling work queue entry. Each interface
- * has its own work queue entry, which is used
- * to defer events from the interrupt */
- struct work_struct poll_work;
- struct timer_list poll_delay_timer;
-
- u8 gateway;
- u8 true_if_encoding;
- //FIXME: add driver stats as per frame relay!
-
-} chdlc_private_area_t;
-
-/* Route Status options */
-#define NO_ROUTE 0x00
-#define ADD_ROUTE 0x01
-#define ROUTE_ADDED 0x02
-#define REMOVE_ROUTE 0x03
-
-
-/* variable for keeping track of enabling/disabling FT1 monitor status */
-static int rCount = 0;
-
-/* variable for tracking how many interfaces to open for WANPIPE on the
- two ports */
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/****** Function Prototypes *************************************************/
-/* WAN link driver entry points. These are called by the WAN router module. */
-static int update(struct wan_device* wandev);
-static int new_if(struct wan_device* wandev, struct net_device* dev,
- wanif_conf_t* conf);
-
-/* Network device interface */
-static int if_init(struct net_device* dev);
-static int if_open(struct net_device* dev);
-static int if_close(struct net_device* dev);
-static int if_header(struct sk_buff* skb, struct net_device* dev,
- unsigned short type, void* daddr, void* saddr,
- unsigned len);
-
-static int if_rebuild_hdr (struct sk_buff *skb);
-static struct net_device_stats* if_stats(struct net_device* dev);
-
-static int if_send(struct sk_buff* skb, struct net_device* dev);
-
-/* CHDLC Firmware interface functions */
-static int chdlc_configure (sdla_t* card, void* data);
-static int chdlc_comm_enable (sdla_t* card);
-static int chdlc_read_version (sdla_t* card, char* str);
-static int chdlc_set_intr_mode (sdla_t* card, unsigned mode);
-static int chdlc_send (sdla_t* card, void* data, unsigned len);
-static int chdlc_read_comm_err_stats (sdla_t* card);
-static int chdlc_read_op_stats (sdla_t* card);
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb);
-
-
-static int chdlc_disable_comm_shutdown (sdla_t *card);
-static void if_tx_timeout(struct net_device *dev);
-
-/* Miscellaneous CHDLC Functions */
-static int set_chdlc_config (sdla_t* card);
-static void init_chdlc_tx_rx_buff( sdla_t* card);
-static int process_chdlc_exception(sdla_t *card);
-static int process_global_exception(sdla_t *card);
-static int update_comms_stats(sdla_t* card,
- chdlc_private_area_t* chdlc_priv_area);
-static int configure_ip (sdla_t* card);
-static int unconfigure_ip (sdla_t* card);
-static void process_route(sdla_t *card);
-static void port_set_state (sdla_t *card, int);
-static int config_chdlc (sdla_t *card);
-static void disable_comm (sdla_t *card);
-
-static void trigger_chdlc_poll(struct net_device *dev);
-static void chdlc_poll(struct net_device *dev);
-static void chdlc_poll_delay (unsigned long dev_ptr);
-
-
-/* Miscellaneous asynchronous interface Functions */
-static int set_asy_config (sdla_t* card);
-static int asy_comm_enable (sdla_t* card);
-
-/* Interrupt handlers */
-static void wpc_isr (sdla_t* card);
-static void rx_intr (sdla_t* card);
-static void timer_intr(sdla_t *);
-
-/* Bottom half handlers */
-static void chdlc_work(struct net_device *dev);
-static int chdlc_work_cleanup(struct net_device *dev);
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb);
-
-/* Miscellaneous functions */
-static int chk_bcast_mcast_addr(sdla_t* card, struct net_device* dev,
- struct sk_buff *skb);
-static int reply_udp( unsigned char *data, unsigned int mbox_len );
-static int intr_test( sdla_t* card);
-static int udp_pkt_type( struct sk_buff *skb , sdla_t* card);
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area);
-static int process_udp_mgmt_pkt(sdla_t* card, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area);
-static unsigned short calc_checksum (char *, int);
-static void s508_lock (sdla_t *card, unsigned long *smp_flags);
-static void s508_unlock (sdla_t *card, unsigned long *smp_flags);
-
-
-static int Intr_test_counter;
-
-/* TTY Global Definitions */
-
-#define NR_PORTS 4
-#define WAN_TTY_MAJOR 226
-#define WAN_TTY_MINOR 0
-
-#define WAN_CARD(port) (tty_card_map[port])
-#define MIN_PORT 0
-#define MAX_PORT NR_PORTS-1
-
-#define CRC_LENGTH 2
-
-static int wanpipe_tty_init(sdla_t *card);
-static void wanpipe_tty_receive(sdla_t *, unsigned, unsigned int);
-static void wanpipe_tty_trigger_poll(sdla_t *card);
-
-static struct tty_driver serial_driver;
-static int tty_init_cnt=0;
-
-static struct serial_state rs_table[NR_PORTS];
-
-static char tty_driver_mode=WANOPT_TTY_SYNC;
-
-static char *opt_decode[] = {"NONE","CRTSCTS","XONXOFF-RX",
- "CRTSCTS XONXOFF-RX","XONXOFF-TX",
- "CRTSCTS XONXOFF-TX","CRTSCTS XONXOFF"};
-static char *p_decode[] = {"NONE","ODD","EVEN"};
-
-static void* tty_card_map[NR_PORTS] = {NULL,NULL,NULL,NULL};
-
-
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * Cisco HDLC protocol initialization routine.
- *
- * This routine is called by the main WANPIPE module during setup. At this
- * point adapter is completely initialized and firmware is running.
- * o read firmware version (to make sure it's alive)
- * o configure adapter
- * o initialize protocol-specific fields of the adapter data space.
- *
- * Return: 0 o.k.
- * < 0 failure.
- */
-int wpc_init (sdla_t* card, wandev_conf_t* conf)
-{
- unsigned char port_num;
- int err;
- unsigned long max_permitted_baud = 0;
- SHARED_MEMORY_INFO_STRUCT *flags;
-
- union
- {
- char str[80];
- } u;
- volatile CHDLC_MAILBOX_STRUCT* mb;
- CHDLC_MAILBOX_STRUCT* mb1;
- unsigned long timeout;
-
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_CHDLC) {
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id);
- return -EINVAL;
- }
-
- /* Find out which Port to use */
- if ((conf->comm_port == WANOPT_PRI) || (conf->comm_port == WANOPT_SEC)){
- if (card->next){
-
- if (conf->comm_port != card->next->u.c.comm_port){
- card->u.c.comm_port = conf->comm_port;
- }else{
- printk(KERN_INFO "%s: ERROR - %s port used!\n",
- card->wandev.name, PORT(conf->comm_port));
- return -EINVAL;
- }
- }else{
- card->u.c.comm_port = conf->comm_port;
- }
- }else{
- printk(KERN_INFO "%s: ERROR - Invalid Port Selected!\n",
- card->wandev.name);
- return -EINVAL;
- }
-
-
- /* Initialize protocol-specific fields */
- if(card->hw.type != SDLA_S514){
-
- if (card->u.c.comm_port == WANOPT_PRI){
- card->mbox = (void *) card->hw.dpmbase;
- }else{
- card->mbox = (void *) card->hw.dpmbase +
- SEC_BASE_ADDR_MB_STRUCT - PRI_BASE_ADDR_MB_STRUCT;
- }
- }else{
- /* for a S514 adapter, set a pointer to the actual mailbox in the */
- /* allocated virtual memory area */
- if (card->u.c.comm_port == WANOPT_PRI){
- card->mbox = (void *) card->hw.dpmbase + PRI_BASE_ADDR_MB_STRUCT;
- }else{
- card->mbox = (void *) card->hw.dpmbase + SEC_BASE_ADDR_MB_STRUCT;
- }
- }
-
- mb = mb1 = card->mbox;
-
- if (!card->configured){
-
- /* The board will place an 'I' in the return code to indicate that it is
- ready to accept commands. We expect this to be completed in less
- than 1 second. */
-
- timeout = jiffies;
- while (mb->return_code != 'I') /* Wait 1s for board to initialize */
- if ((jiffies - timeout) > 1*HZ) break;
-
- if (mb->return_code != 'I') {
- printk(KERN_INFO
- "%s: Initialization not completed by adapter\n",
- card->devname);
- printk(KERN_INFO "Please contact Sangoma representative.\n");
- return -EIO;
- }
- }
-
- /* Read firmware version. Note that when adapter initializes, it
- * clears the mailbox, so it may appear that the first command was
- * executed successfully when in fact it was merely erased. To work
- * around this, we execute the first command twice.
- */
-
- if (chdlc_read_version(card, u.str))
- return -EIO;
-
- printk(KERN_INFO "%s: Running Cisco HDLC firmware v%s\n",
- card->devname, u.str);
-
- card->isr = &wpc_isr;
- card->poll = NULL;
- card->exec = NULL;
- card->wandev.update = &update;
- card->wandev.new_if = &new_if;
- card->wandev.del_if = NULL;
- card->wandev.udp_port = conf->udp_port;
- card->disable_comm = &disable_comm;
- card->wandev.new_if_cnt = 0;
-
- /* reset the number of times the 'update()' proc has been called */
- card->u.c.update_call_count = 0;
-
- card->wandev.ttl = conf->ttl;
- card->wandev.interface = conf->interface;
-
- if ((card->u.c.comm_port == WANOPT_SEC && conf->interface == WANOPT_V35)&&
- card->hw.type != SDLA_S514){
- printk(KERN_INFO "%s: ERROR - V35 Interface not supported on S508 %s port \n",
- card->devname, PORT(card->u.c.comm_port));
- return -EIO;
- }
-
- card->wandev.clocking = conf->clocking;
-
- port_num = card->u.c.comm_port;
-
- /* in API mode, we can configure for "receive only" buffering */
- if(card->hw.type == SDLA_S514) {
- card->u.c.receive_only = conf->receive_only;
- if(conf->receive_only) {
- printk(KERN_INFO
- "%s: Configured for 'receive only' mode\n",
- card->devname);
- }
- }
-
- /* Setup Port Bps */
-
- if(card->wandev.clocking) {
- if((port_num == WANOPT_PRI) || card->u.c.receive_only) {
- /* For Primary Port 0 */
- max_permitted_baud =
- (card->hw.type == SDLA_S514) ?
- PRI_MAX_BAUD_RATE_S514 :
- PRI_MAX_BAUD_RATE_S508;
-
- }else if(port_num == WANOPT_SEC) {
- /* For Secondary Port 1 */
- max_permitted_baud =
- (card->hw.type == SDLA_S514) ?
- SEC_MAX_BAUD_RATE_S514 :
- SEC_MAX_BAUD_RATE_S508;
- }
-
- if(conf->bps > max_permitted_baud) {
- conf->bps = max_permitted_baud;
- printk(KERN_INFO "%s: Baud too high!\n",
- card->wandev.name);
- printk(KERN_INFO "%s: Baud rate set to %lu bps\n",
- card->wandev.name, max_permitted_baud);
- }
- card->wandev.bps = conf->bps;
- }else{
- card->wandev.bps = 0;
- }
-
- /* Setup the Port MTU */
- if((port_num == WANOPT_PRI) || card->u.c.receive_only) {
-
- /* For Primary Port 0 */
- card->wandev.mtu =
- (conf->mtu >= MIN_LGTH_CHDLC_DATA_CFG) ?
- min_t(unsigned int, conf->mtu, PRI_MAX_NO_DATA_BYTES_IN_FRAME) :
- CHDLC_DFLT_DATA_LEN;
- } else if(port_num == WANOPT_SEC) {
- /* For Secondary Port 1 */
- card->wandev.mtu =
- (conf->mtu >= MIN_LGTH_CHDLC_DATA_CFG) ?
- min_t(unsigned int, conf->mtu, SEC_MAX_NO_DATA_BYTES_IN_FRAME) :
- CHDLC_DFLT_DATA_LEN;
- }
-
- /* Set up the interrupt status area */
- /* Read the CHDLC Configuration and obtain:
- * Ptr to shared memory infor struct
- * Use this pointer to calculate the value of card->u.c.flags !
- */
- mb1->buffer_length = 0;
- mb1->command = READ_CHDLC_CONFIGURATION;
- err = sdla_exec(mb1) ? mb1->return_code : CMD_TIMEOUT;
- if(err != COMMAND_OK) {
- if(card->hw.type != SDLA_S514)
- enable_irq(card->hw.irq);
-
- chdlc_error(card, err, mb1);
- return -EIO;
- }
-
- if(card->hw.type == SDLA_S514){
- card->u.c.flags = (void *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
- ptr_shared_mem_info_struct));
- }else{
- card->u.c.flags = (void *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
- ptr_shared_mem_info_struct % SDLA_WINDOWSIZE));
- }
-
- flags = card->u.c.flags;
-
- /* This is for the ports link state */
- card->wandev.state = WAN_DUALPORT;
- card->u.c.state = WAN_DISCONNECTED;
-
-
- if (!card->wandev.piggyback){
- int err;
-
- /* Perform interrupt testing */
- err = intr_test(card);
-
- if(err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) {
- printk(KERN_INFO "%s: Interrupt test failed (%i)\n",
- card->devname, Intr_test_counter);
- printk(KERN_INFO "%s: Please choose another interrupt\n",
- card->devname);
- return -EIO;
- }
-
- printk(KERN_INFO "%s: Interrupt test passed (%i)\n",
- card->devname, Intr_test_counter);
- card->configured = 1;
- }
-
- if ((card->tty_opt=conf->tty) == WANOPT_YES){
- int err;
- card->tty_minor = conf->tty_minor;
-
- /* On ASYNC connections internal clocking
- * is mandatory */
- if ((card->u.c.async_mode = conf->tty_mode)){
- card->wandev.clocking = 1;
- }
- err=wanpipe_tty_init(card);
- if (err){
- return err;
- }
- }else{
-
-
- if (chdlc_set_intr_mode(card, APP_INT_ON_TIMER)){
- printk (KERN_INFO "%s: "
- "Failed to set interrupt triggers!\n",
- card->devname);
- return -EIO;
- }
-
- /* Mask the Timer interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TIMER;
- }
-
- /* If we are using CHDLC in backup mode, this flag will
- * indicate not to look for IP addresses in config_chdlc()*/
- card->u.c.backup = conf->backup;
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Update device status & statistics
- * This procedure is called when updating the PROC file system and returns
- * various communications statistics. These statistics are accumulated from 3
- * different locations:
- * 1) The 'if_stats' recorded for the device.
- * 2) Communication error statistics on the adapter.
- * 3) CHDLC operational statistics on the adapter.
- * The board level statistics are read during a timer interrupt. Note that we
- * read the error and operational statistics during consecitive timer ticks so
- * as to minimize the time that we are inside the interrupt handler.
- *
- */
-static int update(struct wan_device* wandev)
-{
- sdla_t* card = wandev->private;
- struct net_device* dev;
- volatile chdlc_private_area_t* chdlc_priv_area;
- SHARED_MEMORY_INFO_STRUCT *flags;
- unsigned long timeout;
-
- /* sanity checks */
- if((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
-
- if(wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
-
- /* more sanity checks */
- if(!card->u.c.flags)
- return -ENODEV;
-
- if(test_bit(PERI_CRIT, (void*)&card->wandev.critical))
- return -EAGAIN;
-
- if((dev=card->wandev.dev) == NULL)
- return -ENODEV;
-
- if((chdlc_priv_area=dev->priv) == NULL)
- return -ENODEV;
-
- flags = card->u.c.flags;
- if(chdlc_priv_area->update_comms_stats){
- return -EAGAIN;
- }
-
- /* we will need 2 timer interrupts to complete the */
- /* reading of the statistics */
- chdlc_priv_area->update_comms_stats = 2;
- flags->interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
- chdlc_priv_area->timer_int_enabled = TMR_INT_ENABLED_UPDATE;
-
- /* wait a maximum of 1 second for the statistics to be updated */
- timeout = jiffies;
- for(;;) {
- if(chdlc_priv_area->update_comms_stats == 0)
- break;
- if ((jiffies - timeout) > (1 * HZ)){
- chdlc_priv_area->update_comms_stats = 0;
- chdlc_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- return -EAGAIN;
- }
- }
-
- 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 registaration.
- *
- * Return: 0 o.k.
- * < 0 failure (channel will not be created)
- */
-static int new_if(struct wan_device* wandev, struct net_device* dev,
- wanif_conf_t* conf)
-{
- sdla_t* card = wandev->private;
- chdlc_private_area_t* chdlc_priv_area;
-
-
- printk(KERN_INFO "%s: Configuring Interface: %s\n",
- card->devname, conf->name);
-
- if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
- printk(KERN_INFO "%s: Invalid interface name!\n",
- card->devname);
- return -EINVAL;
- }
-
- /* allocate and initialize private data */
- chdlc_priv_area = kmalloc(sizeof(chdlc_private_area_t), GFP_KERNEL);
-
- if(chdlc_priv_area == NULL)
- return -ENOMEM;
-
- memset(chdlc_priv_area, 0, sizeof(chdlc_private_area_t));
-
- chdlc_priv_area->card = card;
- chdlc_priv_area->common.sk = NULL;
- chdlc_priv_area->common.func = NULL;
-
- /* initialize data */
- strcpy(card->u.c.if_name, conf->name);
-
- if(card->wandev.new_if_cnt > 0) {
- kfree(chdlc_priv_area);
- return -EEXIST;
- }
-
- card->wandev.new_if_cnt++;
-
- chdlc_priv_area->TracingEnabled = 0;
- chdlc_priv_area->route_status = NO_ROUTE;
- chdlc_priv_area->route_removed = 0;
-
- card->u.c.async_mode = conf->async_mode;
-
- /* setup for asynchronous mode */
- if(conf->async_mode) {
- printk(KERN_INFO "%s: Configuring for asynchronous mode\n",
- wandev->name);
-
- if(card->u.c.comm_port == WANOPT_PRI) {
- printk(KERN_INFO
- "%s:Asynchronous mode on secondary port only\n",
- wandev->name);
- kfree(chdlc_priv_area);
- return -EINVAL;
- }
-
- if(strcmp(conf->usedby, "WANPIPE") == 0) {
- printk(KERN_INFO
- "%s: Running in WANIPE Async Mode\n", wandev->name);
- card->u.c.usedby = WANPIPE;
- }else{
- card->u.c.usedby = API;
- }
-
- if(!card->wandev.clocking) {
- printk(KERN_INFO
- "%s: Asynch. clocking must be 'Internal'\n",
- wandev->name);
- kfree(chdlc_priv_area);
- return -EINVAL;
- }
-
- if((card->wandev.bps < MIN_ASY_BAUD_RATE) ||
- (card->wandev.bps > MAX_ASY_BAUD_RATE)) {
- printk(KERN_INFO "%s: Selected baud rate is invalid.\n",
- wandev->name);
- printk(KERN_INFO "Must be between %u and %u bps.\n",
- MIN_ASY_BAUD_RATE, MAX_ASY_BAUD_RATE);
- kfree(chdlc_priv_area);
- return -EINVAL;
- }
-
- card->u.c.api_options = 0;
- if (conf->asy_data_trans == WANOPT_YES) {
- card->u.c.api_options |= ASY_RX_DATA_TRANSPARENT;
- }
-
- card->u.c.protocol_options = 0;
- if (conf->rts_hs_for_receive == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_RTS_HS_FOR_RX;
- }
- if (conf->xon_xoff_hs_for_receive == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_XON_XOFF_HS_FOR_RX;
- }
- if (conf->xon_xoff_hs_for_transmit == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_XON_XOFF_HS_FOR_TX;
- }
- if (conf->dcd_hs_for_transmit == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_DCD_HS_FOR_TX;
- }
- if (conf->cts_hs_for_transmit == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_CTS_HS_FOR_TX;
- }
-
- card->u.c.tx_bits_per_char = conf->tx_bits_per_char;
- card->u.c.rx_bits_per_char = conf->rx_bits_per_char;
- card->u.c.stop_bits = conf->stop_bits;
- card->u.c.parity = conf->parity;
- card->u.c.break_timer = conf->break_timer;
- card->u.c.inter_char_timer = conf->inter_char_timer;
- card->u.c.rx_complete_length = conf->rx_complete_length;
- card->u.c.xon_char = conf->xon_char;
-
- } else { /* setup for synchronous mode */
-
- card->u.c.protocol_options = 0;
- if (conf->ignore_dcd == WANOPT_YES){
- card->u.c.protocol_options |= IGNORE_DCD_FOR_LINK_STAT;
- }
- if (conf->ignore_cts == WANOPT_YES){
- card->u.c.protocol_options |= IGNORE_CTS_FOR_LINK_STAT;
- }
-
- if (conf->ignore_keepalive == WANOPT_YES) {
- card->u.c.protocol_options |=
- IGNORE_KPALV_FOR_LINK_STAT;
- card->u.c.kpalv_tx = MIN_Tx_KPALV_TIMER;
- card->u.c.kpalv_rx = MIN_Rx_KPALV_TIMER;
- card->u.c.kpalv_err = MIN_KPALV_ERR_TOL;
-
- } else { /* Do not ignore keepalives */
- card->u.c.kpalv_tx =
- ((conf->keepalive_tx_tmr - MIN_Tx_KPALV_TIMER)
- >= 0) ?
- min_t(unsigned int, conf->keepalive_tx_tmr,MAX_Tx_KPALV_TIMER) :
- DEFAULT_Tx_KPALV_TIMER;
-
- card->u.c.kpalv_rx =
- ((conf->keepalive_rx_tmr - MIN_Rx_KPALV_TIMER)
- >= 0) ?
- min_t(unsigned int, conf->keepalive_rx_tmr,MAX_Rx_KPALV_TIMER) :
- DEFAULT_Rx_KPALV_TIMER;
-
- card->u.c.kpalv_err =
- ((conf->keepalive_err_margin-MIN_KPALV_ERR_TOL)
- >= 0) ?
- min_t(unsigned int, conf->keepalive_err_margin,
- MAX_KPALV_ERR_TOL) :
- DEFAULT_KPALV_ERR_TOL;
- }
-
- /* Setup slarp timer to control delay between slarps */
- card->u.c.slarp_timer =
- ((conf->slarp_timer - MIN_SLARP_REQ_TIMER) >= 0) ?
- min_t(unsigned int, conf->slarp_timer, MAX_SLARP_REQ_TIMER) :
- DEFAULT_SLARP_REQ_TIMER;
-
- if (conf->hdlc_streaming == WANOPT_YES) {
- printk(KERN_INFO "%s: Enabling HDLC STREAMING Mode\n",
- wandev->name);
- card->u.c.protocol_options = HDLC_STREAMING_MODE;
- }
-
- if ((chdlc_priv_area->true_if_encoding = conf->true_if_encoding) == WANOPT_YES){
- printk(KERN_INFO
- "%s: Enabling, true interface type encoding.\n",
- card->devname);
- }
-
- /* Setup wanpipe as a router (WANPIPE) or as an API */
- if( strcmp(conf->usedby, "WANPIPE") == 0) {
-
- printk(KERN_INFO "%s: Running in WANPIPE mode!\n",
- wandev->name);
- card->u.c.usedby = WANPIPE;
-
- /* Option to bring down the interface when
- * the link goes down */
- if (conf->if_down){
- set_bit(DYN_OPT_ON,&chdlc_priv_area->interface_down);
- printk(KERN_INFO
- "%s: Dynamic interface configuration enabled\n",
- card->devname);
- }
-
- } else if( strcmp(conf->usedby, "API") == 0) {
- card->u.c.usedby = API;
- printk(KERN_INFO "%s: Running in API mode !\n",
- wandev->name);
- }
- }
-
- /* Tells us that if this interface is a
- * gateway or not */
- if ((chdlc_priv_area->gateway = conf->gateway) == WANOPT_YES){
- printk(KERN_INFO "%s: Interface %s is set as a gateway.\n",
- card->devname,card->u.c.if_name);
- }
-
- /* Get Multicast Information */
- chdlc_priv_area->mc = conf->mc;
-
- /* prepare network device data space for registration */
- strcpy(dev->name,card->u.c.if_name);
-
- dev->init = &if_init;
- dev->priv = chdlc_priv_area;
-
- /* Initialize the polling work routine */
- INIT_WORK(&chdlc_priv_area->poll_work, (void*)(void*)chdlc_poll, dev);
-
- /* Initialize the polling delay timer */
- init_timer(&chdlc_priv_area->poll_delay_timer);
- chdlc_priv_area->poll_delay_timer.data = (unsigned long)dev;
- chdlc_priv_area->poll_delay_timer.function = chdlc_poll_delay;
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-
-/****** Network Device Interface ********************************************/
-
-/*============================================================================
- * 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 if_init(struct net_device* dev)
-{
- chdlc_private_area_t* chdlc_priv_area = dev->priv;
- sdla_t* card = chdlc_priv_area->card;
- struct wan_device* wandev = &card->wandev;
-
- /* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_header = &if_header;
- dev->rebuild_header = &if_rebuild_hdr;
- dev->hard_start_xmit = &if_send;
- dev->get_stats = &if_stats;
- dev->tx_timeout = &if_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- /* Initialize media-specific parameters */
- dev->flags |= IFF_POINTOPOINT;
- dev->flags |= IFF_NOARP;
-
- /* Enable Mulitcasting if user selected */
- if (chdlc_priv_area->mc == WANOPT_YES){
- dev->flags |= IFF_MULTICAST;
- }
-
- if (chdlc_priv_area->true_if_encoding){
- dev->type = ARPHRD_HDLC; /* This breaks the tcpdump */
- }else{
- dev->type = ARPHRD_PPP;
- }
-
- dev->mtu = card->wandev.mtu;
- /* for API usage, add the API header size to the requested MTU size */
- if(card->u.c.usedby == API) {
- dev->mtu += sizeof(api_tx_hdr_t);
- }
-
- dev->hard_header_len = CHDLC_HDR_LEN;
-
- /* Initialize hardware parameters */
- dev->irq = wandev->irq;
- dev->dma = wandev->dma;
- dev->base_addr = wandev->ioport;
- dev->mem_start = wandev->maddr;
- dev->mem_end = wandev->maddr + wandev->msize - 1;
-
- /* Set transmit buffer queue length
- * If too low packets will not be retransmitted
- * by stack.
- */
- dev->tx_queue_len = 100;
- SET_MODULE_OWNER(dev);
-
- return 0;
-}
-
-/*============================================================================
- * Open network interface.
- * o enable communications and interrupts.
- * o prevent module from unloading by incrementing use count
- *
- * Return 0 if O.k. or errno.
- */
-static int if_open(struct net_device* dev)
-{
- chdlc_private_area_t* chdlc_priv_area = dev->priv;
- sdla_t* card = chdlc_priv_area->card;
- struct timeval tv;
- int err = 0;
-
- /* Only one open per interface is allowed */
-
- if (netif_running(dev))
- return -EBUSY;
-
- /* Initialize the work queue entry */
- chdlc_priv_area->tq_working=0;
-
- INIT_WORK(&chdlc_priv_area->common.wanpipe_work,
- (void *)(void *)chdlc_work, dev);
-
- /* Allocate and initialize BH circular buffer */
- /* Add 1 to MAX_BH_BUFF so we don't have test with (MAX_BH_BUFF-1) */
- chdlc_priv_area->bh_head = kmalloc((sizeof(bh_data_t)*(MAX_BH_BUFF+1)),GFP_ATOMIC);
- memset(chdlc_priv_area->bh_head,0,(sizeof(bh_data_t)*(MAX_BH_BUFF+1)));
- atomic_set(&chdlc_priv_area->bh_buff_used, 0);
-
- do_gettimeofday(&tv);
- chdlc_priv_area->router_start_time = tv.tv_sec;
-
- netif_start_queue(dev);
-
- wanpipe_open(card);
-
- /* TTY is configured during wanpipe_set_termios
- * call, not here */
- if (card->tty_opt)
- return err;
-
- set_bit(0,&chdlc_priv_area->config_chdlc);
- chdlc_priv_area->config_chdlc_timeout=jiffies;
-
- /* Start the CHDLC configuration after 1sec delay.
- * This will give the interface initilization time
- * to finish its configuration */
- mod_timer(&chdlc_priv_area->poll_delay_timer, jiffies + HZ);
- return err;
-}
-
-/*============================================================================
- * Close network interface.
- * o if this is the last close, then disable communications and interrupts.
- * o reset flags.
- */
-static int if_close(struct net_device* dev)
-{
- chdlc_private_area_t* chdlc_priv_area = dev->priv;
- sdla_t* card = chdlc_priv_area->card;
-
- if (chdlc_priv_area->bh_head){
- int i;
- struct sk_buff *skb;
-
- for (i=0; i<(MAX_BH_BUFF+1); i++){
- skb = ((bh_data_t *)&chdlc_priv_area->bh_head[i])->skb;
- if (skb != NULL){
- dev_kfree_skb_any(skb);
- }
- }
- kfree(chdlc_priv_area->bh_head);
- chdlc_priv_area->bh_head=NULL;
- }
-
- netif_stop_queue(dev);
- wanpipe_close(card);
- del_timer(&chdlc_priv_area->poll_delay_timer);
- return 0;
-}
-
-static void disable_comm (sdla_t *card)
-{
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
- if (card->u.c.comm_enabled){
- chdlc_disable_comm_shutdown (card);
- }else{
- flags->interrupt_info_struct.interrupt_permission = 0;
- }
-
- if (!tty_init_cnt)
- return;
-
- if (card->tty_opt){
- struct serial_state * state;
- if (!(--tty_init_cnt)){
- int e1;
- serial_driver.refcount=0;
-
- if ((e1 = tty_unregister_driver(&serial_driver)))
- printk("SERIAL: failed to unregister serial driver (%d)\n",
- e1);
- printk(KERN_INFO "%s: Unregistering TTY Driver, Major %i\n",
- card->devname,WAN_TTY_MAJOR);
- }
- card->tty=NULL;
- tty_card_map[card->tty_minor]=NULL;
- state = &rs_table[card->tty_minor];
- memset(state, 0, sizeof(*state));
- }
- return;
-}
-
-
-/*============================================================================
- * Build media header.
- *
- * The trick here is to put packet type (Ethertype) into 'protocol' field of
- * the socket buffer, so that we don't forget it. If packet type is not
- * supported, set skb->protocol to 0 and discard packet later.
- *
- * Return: media header length.
- */
-static int if_header(struct sk_buff* skb, struct net_device* dev,
- unsigned short type, void* daddr, void* saddr,
- unsigned len)
-{
- skb->protocol = htons(type);
-
- return CHDLC_HDR_LEN;
-}
-
-
-/*============================================================================
- * Handle transmit timeout event from netif watchdog
- */
-static void if_tx_timeout(struct net_device *dev)
-{
- chdlc_private_area_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
- /* If our device stays busy for at least 5 seconds then we will
- * kick start the device by making dev->tbusy = 0. We expect
- * that our device never stays busy more than 5 seconds. So this
- * is only used as a last resort.
- */
-
- ++card->wandev.stats.collisions;
-
- printk (KERN_INFO "%s: Transmit timed out on %s\n", card->devname,dev->name);
- netif_wake_queue (dev);
-}
-
-
-
-/*============================================================================
- * Re-build media header.
- *
- * Return: 1 physical address resolved.
- * 0 physical address not resolved
- */
-static int if_rebuild_hdr (struct sk_buff *skb)
-{
- return 1;
-}
-
-
-/*============================================================================
- * Send a packet on a network interface.
- * o set tbusy flag (marks start of the transmission) to block a timer-based
- * transmit from overlapping.
- * o check link state. If link is not up, then drop the packet.
- * o execute adapter send command.
- * 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 int if_send(struct sk_buff* skb, struct net_device* dev)
-{
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
- sdla_t *card = chdlc_priv_area->card;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- INTERRUPT_INFORMATION_STRUCT *chdlc_int = &flags->interrupt_info_struct;
- int udp_type = 0;
- unsigned long smp_flags;
- int err=0;
-
- netif_stop_queue(dev);
-
- if (skb == NULL){
- /* If we get here, some higher layer thinks we've missed an
- * tx-done interrupt.
- */
- printk(KERN_INFO "%s: interface %s got kicked!\n",
- card->devname, dev->name);
-
- netif_wake_queue(dev);
- return 0;
- }
-
- if (ntohs(skb->protocol) != htons(PVC_PROT)){
-
- /* check the udp packet type */
-
- udp_type = udp_pkt_type(skb, card);
-
- if (udp_type == UDP_CPIPE_TYPE){
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb, dev,
- chdlc_priv_area)){
- chdlc_int->interrupt_permission |=
- APP_INT_ON_TIMER;
- }
- netif_start_queue(dev);
- return 0;
- }
-
- /* check to see if the source IP address is a broadcast or */
- /* multicast IP address */
- if(chk_bcast_mcast_addr(card, dev, skb)){
- ++card->wandev.stats.tx_dropped;
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
- }
-
- /* Lock the 508 Card: SMP is supported */
- if(card->hw.type != SDLA_S514){
- s508_lock(card,&smp_flags);
- }
-
- if(test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
-
- printk(KERN_INFO "%s: Critical in if_send: %lx\n",
- card->wandev.name,card->wandev.critical);
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
- goto if_send_exit_crit;
- }
-
- if(card->u.c.state != WAN_CONNECTED){
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
-
- }else if(!skb->protocol){
- ++card->wandev.stats.tx_errors;
- netif_start_queue(dev);
-
- }else {
- void* data = skb->data;
- unsigned len = skb->len;
- unsigned char attr;
-
- /* If it's an API packet pull off the API
- * header. Also check that the packet size
- * is larger than the API header
- */
- if (card->u.c.usedby == API){
- api_tx_hdr_t* api_tx_hdr;
-
- /* discard the frame if we are configured for */
- /* 'receive only' mode or if there is no data */
- if (card->u.c.receive_only ||
- (len <= sizeof(api_tx_hdr_t))) {
-
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
- goto if_send_exit_crit;
- }
-
- api_tx_hdr = (api_tx_hdr_t *)data;
- attr = api_tx_hdr->attr;
- data += sizeof(api_tx_hdr_t);
- len -= sizeof(api_tx_hdr_t);
- }
-
- if(chdlc_send(card, data, len)) {
- netif_stop_queue(dev);
- }else{
- ++card->wandev.stats.tx_packets;
- card->wandev.stats.tx_bytes += len;
-
- netif_start_queue(dev);
-
- dev->trans_start = jiffies;
- }
- }
-
-if_send_exit_crit:
-
- if (!(err=netif_queue_stopped(dev))) {
- dev_kfree_skb_any(skb);
- }else{
- chdlc_priv_area->tick_counter = jiffies;
- chdlc_int->interrupt_permission |= APP_INT_ON_TX_FRAME;
- }
-
- clear_bit(SEND_CRIT, (void*)&card->wandev.critical);
- if(card->hw.type != SDLA_S514){
- s508_unlock(card,&smp_flags);
- }
-
- return err;
-}
-
-
-/*============================================================================
- * Check to see if the packet to be transmitted contains a broadcast or
- * multicast source IP address.
- */
-
-static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev,
- struct sk_buff *skb)
-{
- u32 src_ip_addr;
- u32 broadcast_ip_addr = 0;
- struct in_device *in_dev;
-
- /* read the IP source address from the outgoing packet */
- src_ip_addr = *(u32 *)(skb->data + 12);
-
- /* read the IP broadcast address for the device */
- in_dev = dev->ip_ptr;
- if(in_dev != NULL) {
- struct in_ifaddr *ifa= in_dev->ifa_list;
- if(ifa != NULL)
- broadcast_ip_addr = ifa->ifa_broadcast;
- else
- return 0;
- }
-
- /* check if the IP Source Address is a Broadcast address */
- if((dev->flags & IFF_BROADCAST) && (src_ip_addr == broadcast_ip_addr)) {
- printk(KERN_INFO "%s: Broadcast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- /* check if the IP Source Address is a Multicast address */
- if((ntohl(src_ip_addr) >= 0xE0000001) &&
- (ntohl(src_ip_addr) <= 0xFFFFFFFE)) {
- printk(KERN_INFO "%s: Multicast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- return 0;
-}
-
-
-/*============================================================================
- * Reply to UDP Management system.
- * Return length of reply.
- */
-static int reply_udp( unsigned char *data, unsigned int mbox_len )
-{
-
- unsigned short len, udp_length, temp, ip_length;
- unsigned long ip_temp;
- int even_bound = 0;
- chdlc_udp_pkt_t *c_udp_pkt = (chdlc_udp_pkt_t *)data;
-
- /* Set length of packet */
- len = sizeof(ip_pkt_t)+
- sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- sizeof(trace_info_t)+
- mbox_len;
-
- /* fill in UDP reply */
- c_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
-
- /* fill in UDP length */
- udp_length = sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- sizeof(trace_info_t)+
- mbox_len;
-
- /* put it on an even boundary */
- if ( udp_length & 0x0001 ) {
- udp_length += 1;
- len += 1;
- even_bound = 1;
- }
-
- temp = (udp_length<<8)|(udp_length>>8);
- c_udp_pkt->udp_pkt.udp_length = temp;
-
- /* swap UDP ports */
- temp = c_udp_pkt->udp_pkt.udp_src_port;
- c_udp_pkt->udp_pkt.udp_src_port =
- c_udp_pkt->udp_pkt.udp_dst_port;
- c_udp_pkt->udp_pkt.udp_dst_port = temp;
-
- /* add UDP pseudo header */
- temp = 0x1100;
- *((unsigned short *)(c_udp_pkt->data+mbox_len+even_bound)) = temp;
- temp = (udp_length<<8)|(udp_length>>8);
- *((unsigned short *)(c_udp_pkt->data+mbox_len+even_bound+2)) = temp;
-
-
- /* calculate UDP checksum */
- c_udp_pkt->udp_pkt.udp_checksum = 0;
- c_udp_pkt->udp_pkt.udp_checksum = calc_checksum(&data[UDP_OFFSET],udp_length+UDP_OFFSET);
-
- /* fill in IP length */
- ip_length = len;
- temp = (ip_length<<8)|(ip_length>>8);
- c_udp_pkt->ip_pkt.total_length = temp;
-
- /* swap IP addresses */
- ip_temp = c_udp_pkt->ip_pkt.ip_src_address;
- c_udp_pkt->ip_pkt.ip_src_address = c_udp_pkt->ip_pkt.ip_dst_address;
- c_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
-
- /* fill in IP checksum */
- c_udp_pkt->ip_pkt.hdr_checksum = 0;
- c_udp_pkt->ip_pkt.hdr_checksum = calc_checksum(data,sizeof(ip_pkt_t));
-
- return len;
-
-} /* reply_udp */
-
-unsigned short calc_checksum (char *data, int len)
-{
- unsigned short temp;
- unsigned long sum=0;
- int i;
-
- for( i = 0; i <len; i+=2 ) {
- memcpy(&temp,&data[i],2);
- sum += (unsigned long)temp;
- }
-
- while (sum >> 16 ) {
- sum = (sum & 0xffffUL) + (sum >> 16);
- }
-
- temp = (unsigned short)sum;
- temp = ~temp;
-
- if( temp == 0 )
- temp = 0xffff;
-
- return temp;
-}
-
-
-/*============================================================================
- * Get ethernet-style interface statistics.
- * Return a pointer to struct enet_statistics.
- */
-static struct net_device_stats* if_stats(struct net_device* dev)
-{
- sdla_t *my_card;
- chdlc_private_area_t* chdlc_priv_area;
-
- if ((chdlc_priv_area=dev->priv) == NULL)
- return NULL;
-
- my_card = chdlc_priv_area->card;
- return &my_card->wandev.stats;
-}
-
-
-/****** Cisco HDLC Firmware Interface Functions *******************************/
-
-/*============================================================================
- * Read firmware code version.
- * Put code version as ASCII string in str.
- */
-static int chdlc_read_version (sdla_t* card, char* str)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int len;
- char err;
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CODE_VERSION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if(err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- }
- else if (str) { /* is not null */
- len = mb->buffer_length;
- memcpy(str, mb->data, len);
- str[len] = '\0';
- }
- return (err);
-}
-
-/*-----------------------------------------------------------------------------
- * Configure CHDLC firmware.
- */
-static int chdlc_configure (sdla_t* card, void* data)
-{
- int err;
- CHDLC_MAILBOX_STRUCT *mailbox = card->mbox;
- int data_length = sizeof(CHDLC_CONFIGURATION_STRUCT);
-
- mailbox->buffer_length = data_length;
- memcpy(mailbox->data, data, data_length);
- mailbox->command = SET_CHDLC_CONFIGURATION;
- err = sdla_exec(mailbox) ? mailbox->return_code : CMD_TIMEOUT;
-
- if (err != COMMAND_OK) chdlc_error (card, err, mailbox);
-
- return err;
-}
-
-
-/*============================================================================
- * Set interrupt mode -- HDLC Version.
- */
-
-static int chdlc_set_intr_mode (sdla_t* card, unsigned mode)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_INT_TRIGGERS_STRUCT* int_data =
- (CHDLC_INT_TRIGGERS_STRUCT *)mb->data;
- int err;
-
- int_data->CHDLC_interrupt_triggers = mode;
- int_data->IRQ = card->hw.irq;
- int_data->interrupt_timer = 1;
-
- mb->buffer_length = sizeof(CHDLC_INT_TRIGGERS_STRUCT);
- mb->command = SET_CHDLC_INTERRUPT_TRIGGERS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error (card, err, mb);
- return err;
-}
-
-
-/*===========================================================
- * chdlc_disable_comm_shutdown
- *
- * Shutdown() disables the communications. We must
- * have a sparate functions, because we must not
- * call chdlc_error() hander since the private
- * area has already been replaced */
-
-static int chdlc_disable_comm_shutdown (sdla_t *card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_INT_TRIGGERS_STRUCT* int_data =
- (CHDLC_INT_TRIGGERS_STRUCT *)mb->data;
- int err;
-
- /* Disable Interrutps */
- int_data->CHDLC_interrupt_triggers = 0;
- int_data->IRQ = card->hw.irq;
- int_data->interrupt_timer = 1;
-
- mb->buffer_length = sizeof(CHDLC_INT_TRIGGERS_STRUCT);
- mb->command = SET_CHDLC_INTERRUPT_TRIGGERS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- /* Disable Communications */
-
- if (card->u.c.async_mode) {
- mb->command = DISABLE_ASY_COMMUNICATIONS;
- }else{
- mb->command = DISABLE_CHDLC_COMMUNICATIONS;
- }
-
- mb->buffer_length = 0;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- card->u.c.comm_enabled = 0;
-
- return 0;
-}
-
-/*============================================================================
- * Enable communications.
- */
-
-static int chdlc_comm_enable (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = ENABLE_CHDLC_COMMUNICATIONS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card, err, mb);
- else
- card->u.c.comm_enabled = 1;
-
- return err;
-}
-
-/*============================================================================
- * Read communication error statistics.
- */
-static int chdlc_read_comm_err_stats (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = READ_COMMS_ERROR_STATS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card,err,mb);
- return err;
-}
-
-
-/*============================================================================
- * Read CHDLC operational statistics.
- */
-static int chdlc_read_op_stats (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_OPERATIONAL_STATS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card,err,mb);
- return err;
-}
-
-
-/*============================================================================
- * Update communications error and general packet statistics.
- */
-static int update_comms_stats(sdla_t* card,
- chdlc_private_area_t* chdlc_priv_area)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- COMMS_ERROR_STATS_STRUCT* err_stats;
- CHDLC_OPERATIONAL_STATS_STRUCT *op_stats;
-
- /* on the first timer interrupt, read the comms error statistics */
- if(chdlc_priv_area->update_comms_stats == 2) {
- if(chdlc_read_comm_err_stats(card))
- return 1;
- err_stats = (COMMS_ERROR_STATS_STRUCT *)mb->data;
- card->wandev.stats.rx_over_errors =
- err_stats->Rx_overrun_err_count;
- card->wandev.stats.rx_crc_errors =
- err_stats->CRC_err_count;
- card->wandev.stats.rx_frame_errors =
- err_stats->Rx_abort_count;
- card->wandev.stats.rx_fifo_errors =
- err_stats->Rx_dis_pri_bfrs_full_count;
- card->wandev.stats.rx_missed_errors =
- card->wandev.stats.rx_fifo_errors;
- card->wandev.stats.tx_aborted_errors =
- err_stats->sec_Tx_abort_count;
- }
-
- /* on the second timer interrupt, read the operational statistics */
- else {
- if(chdlc_read_op_stats(card))
- return 1;
- op_stats = (CHDLC_OPERATIONAL_STATS_STRUCT *)mb->data;
- card->wandev.stats.rx_length_errors =
- (op_stats->Rx_Data_discard_short_count +
- op_stats->Rx_Data_discard_long_count);
- }
-
- return 0;
-}
-
-/*============================================================================
- * Send packet.
- * Return: 0 - o.k.
- * 1 - no transmit buffers available
- */
-static int chdlc_send (sdla_t* card, void* data, unsigned len)
-{
- CHDLC_DATA_TX_STATUS_EL_STRUCT *txbuf = card->u.c.txbuf;
-
- if (txbuf->opp_flag)
- return 1;
-
- sdla_poke(&card->hw, txbuf->ptr_data_bfr, data, len);
-
- txbuf->frame_length = len;
- txbuf->opp_flag = 1; /* start transmission */
-
- /* Update transmit buffer control fields */
- card->u.c.txbuf = ++txbuf;
-
- if ((void*)txbuf > card->u.c.txbuf_last)
- card->u.c.txbuf = card->u.c.txbuf_base;
-
- return 0;
-}
-
-/****** Firmware Error Handler **********************************************/
-
-/*============================================================================
- * Firmware error handler.
- * This routine is called whenever firmware command returns non-zero
- * return code.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb)
-{
- unsigned cmd = mb->command;
-
- switch (err) {
-
- case CMD_TIMEOUT:
- printk(KERN_INFO "%s: command 0x%02X timed out!\n",
- card->devname, cmd);
- break;
-
- case S514_BOTH_PORTS_SAME_CLK_MODE:
- if(cmd == SET_CHDLC_CONFIGURATION) {
- printk(KERN_INFO
- "%s: Configure both ports for the same clock source\n",
- card->devname);
- break;
- }
-
- default:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n",
- card->devname, cmd, err);
- }
-
- return 0;
-}
-
-
-/********** Bottom Half Handlers ********************************************/
-
-/* NOTE: There is no API, BH support for Kernels lower than 2.2.X.
- * DO NOT INSERT ANY CODE HERE, NOTICE THE
- * PREPROCESSOR STATEMENT ABOVE, UNLESS YOU KNOW WHAT YOU ARE
- * DOING */
-
-static void chdlc_work(struct net_device * dev)
-{
- chdlc_private_area_t* chan = dev->priv;
- sdla_t *card = chan->card;
- struct sk_buff *skb;
-
- if (atomic_read(&chan->bh_buff_used) == 0){
- clear_bit(0, &chan->tq_working);
- return;
- }
-
- while (atomic_read(&chan->bh_buff_used)){
-
- skb = ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb;
-
- if (skb != NULL){
-
- if (chan->common.sk == NULL || chan->common.func == NULL){
- ++card->wandev.stats.rx_dropped;
- dev_kfree_skb_any(skb);
- chdlc_work_cleanup(dev);
- continue;
- }
-
- if (chan->common.func(skb,dev,chan->common.sk) != 0){
- /* Sock full cannot send, queue us for another
- * try */
- atomic_set(&chan->common.receive_block,1);
- return;
- }else{
- chdlc_work_cleanup(dev);
- }
- }else{
- chdlc_work_cleanup(dev);
- }
- }
- clear_bit(0, &chan->tq_working);
-
- return;
-}
-
-static int chdlc_work_cleanup(struct net_device *dev)
-{
- chdlc_private_area_t* chan = dev->priv;
-
- ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb = NULL;
-
- if (chan->bh_read == MAX_BH_BUFF){
- chan->bh_read=0;
- }else{
- ++chan->bh_read;
- }
-
- atomic_dec(&chan->bh_buff_used);
- return 0;
-}
-
-
-
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb)
-{
- /* Check for full */
- chdlc_private_area_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
- if (atomic_read(&chan->bh_buff_used) == (MAX_BH_BUFF+1)){
- ++card->wandev.stats.rx_dropped;
- dev_kfree_skb_any(skb);
- return 1;
- }
-
- ((bh_data_t *)&chan->bh_head[chan->bh_write])->skb = skb;
-
- if (chan->bh_write == MAX_BH_BUFF){
- chan->bh_write=0;
- }else{
- ++chan->bh_write;
- }
-
- atomic_inc(&chan->bh_buff_used);
-
- return 0;
-}
-
-/* END OF API BH Support */
-
-
-/****** Interrupt Handlers **************************************************/
-
-/*============================================================================
- * Cisco HDLC interrupt service routine.
- */
-static void wpc_isr (sdla_t* card)
-{
- struct net_device* dev;
- SHARED_MEMORY_INFO_STRUCT* flags = NULL;
- int i;
- sdla_t *my_card;
-
-
- /* Check for which port the interrupt has been generated
- * Since Secondary Port is piggybacking on the Primary
- * the check must be done here.
- */
-
- flags = card->u.c.flags;
- if (!flags->interrupt_info_struct.interrupt_type){
- /* Check for a second port (piggybacking) */
- if ((my_card = card->next)){
- flags = my_card->u.c.flags;
- if (flags->interrupt_info_struct.interrupt_type){
- card = my_card;
- card->isr(card);
- return;
- }
- }
- }
-
- flags = card->u.c.flags;
- card->in_isr = 1;
- dev = card->wandev.dev;
-
- /* If we get an interrupt with no network device, stop the interrupts
- * and issue an error */
- if (!card->tty_opt && !dev &&
- flags->interrupt_info_struct.interrupt_type !=
- COMMAND_COMPLETE_APP_INT_PEND){
-
- goto isr_done;
- }
-
- /* if critical due to peripheral operations
- * ie. update() or getstats() then reset the interrupt and
- * wait for the board to retrigger.
- */
- if(test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
- printk(KERN_INFO "ISR CRIT TO PERI\n");
- goto isr_done;
- }
-
- /* On a 508 Card, if critical due to if_send
- * Major Error !!! */
- if(card->hw.type != SDLA_S514) {
- if(test_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
- printk(KERN_INFO "%s: Critical while in ISR: %lx\n",
- card->devname, card->wandev.critical);
- card->in_isr = 0;
- flags->interrupt_info_struct.interrupt_type = 0;
- return;
- }
- }
-
- switch(flags->interrupt_info_struct.interrupt_type) {
-
- case RX_APP_INT_PEND: /* 0x01: receive interrupt */
- rx_intr(card);
- break;
-
- case TX_APP_INT_PEND: /* 0x02: transmit interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TX_FRAME;
-
- if (card->tty_opt){
- wanpipe_tty_trigger_poll(card);
- break;
- }
-
- if (dev && netif_queue_stopped(dev)){
- if (card->u.c.usedby == API){
- netif_start_queue(dev);
- wakeup_sk_bh(dev);
- }else{
- netif_wake_queue(dev);
- }
- }
- break;
-
- case COMMAND_COMPLETE_APP_INT_PEND:/* 0x04: cmd cplt */
- ++ Intr_test_counter;
- break;
-
- case CHDLC_EXCEP_COND_APP_INT_PEND: /* 0x20 */
- process_chdlc_exception(card);
- break;
-
- case GLOBAL_EXCEP_COND_APP_INT_PEND:
- process_global_exception(card);
- break;
-
- case TIMER_APP_INT_PEND:
- timer_intr(card);
- break;
-
- default:
- printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n",
- card->devname,
- flags->interrupt_info_struct.interrupt_type);
- printk(KERN_INFO "Code name: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codename[i]);
- printk(KERN_INFO "\nCode version: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codeversion[i]);
- printk(KERN_INFO "\n");
- break;
- }
-
-isr_done:
-
- card->in_isr = 0;
- flags->interrupt_info_struct.interrupt_type = 0;
- return;
-}
-
-/*============================================================================
- * Receive interrupt handler.
- */
-static void rx_intr (sdla_t* card)
-{
- struct net_device *dev;
- chdlc_private_area_t *chdlc_priv_area;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- CHDLC_DATA_RX_STATUS_EL_STRUCT *rxbuf = card->u.c.rxmb;
- struct sk_buff *skb;
- unsigned len;
- unsigned addr = rxbuf->ptr_data_bfr;
- void *buf;
- int i,udp_type;
-
- if (rxbuf->opp_flag != 0x01) {
- printk(KERN_INFO
- "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
- card->devname, (unsigned)rxbuf, rxbuf->opp_flag);
- printk(KERN_INFO "Code name: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codename[i]);
- printk(KERN_INFO "\nCode version: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codeversion[i]);
- printk(KERN_INFO "\n");
-
-
- /* Bug Fix: Mar 6 2000
- * If we get a corrupted mailbox, it measn that driver
- * is out of sync with the firmware. There is no recovery.
- * If we don't turn off all interrupts for this card
- * the machine will crash.
- */
- printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname);
- printk(KERN_INFO "Please contact Sangoma Technologies !\n");
- chdlc_set_intr_mode(card,0);
- return;
- }
-
- len = rxbuf->frame_length;
-
- if (card->tty_opt){
-
- if (rxbuf->error_flag){
- goto rx_exit;
- }
-
- if (len <= CRC_LENGTH){
- goto rx_exit;
- }
-
- if (!card->u.c.async_mode){
- len -= CRC_LENGTH;
- }
-
- wanpipe_tty_receive(card,addr,len);
- goto rx_exit;
- }
-
- dev = card->wandev.dev;
-
- if (!dev){
- goto rx_exit;
- }
-
- if (!netif_running(dev))
- goto rx_exit;
-
- chdlc_priv_area = dev->priv;
-
-
- /* Allocate socket buffer */
- skb = dev_alloc_skb(len);
-
- if (skb == NULL) {
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- ++card->wandev.stats.rx_dropped;
- goto rx_exit;
- }
-
- /* Copy data to the socket buffer */
- if((addr + len) > card->u.c.rx_top + 1) {
- unsigned tmp = card->u.c.rx_top - addr + 1;
- buf = skb_put(skb, tmp);
- sdla_peek(&card->hw, addr, buf, tmp);
- addr = card->u.c.rx_base;
- len -= tmp;
- }
-
- buf = skb_put(skb, len);
- sdla_peek(&card->hw, addr, buf, len);
-
- skb->protocol = htons(ETH_P_IP);
-
- card->wandev.stats.rx_packets ++;
- card->wandev.stats.rx_bytes += skb->len;
- udp_type = udp_pkt_type( skb, card );
-
- if(udp_type == UDP_CPIPE_TYPE) {
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK,
- card, skb, dev, chdlc_priv_area)) {
- flags->interrupt_info_struct.
- interrupt_permission |=
- APP_INT_ON_TIMER;
- }
- } else if(card->u.c.usedby == API) {
-
- api_rx_hdr_t* api_rx_hdr;
- skb_push(skb, sizeof(api_rx_hdr_t));
- api_rx_hdr = (api_rx_hdr_t*)&skb->data[0x00];
- api_rx_hdr->error_flag = rxbuf->error_flag;
- api_rx_hdr->time_stamp = rxbuf->time_stamp;
-
- skb->protocol = htons(PVC_PROT);
- skb->mac.raw = skb->data;
- skb->dev = dev;
- skb->pkt_type = WAN_PACKET_DATA;
-
- bh_enqueue(dev, skb);
-
- if (!test_and_set_bit(0,&chdlc_priv_area->tq_working))
- wanpipe_queue_work(&chdlc_priv_area->common.wanpipe_work);
- }else{
- /* FIXME: we should check to see if the received packet is a
- multicast packet so that we can increment the multicast
- statistic
- ++ chdlc_priv_area->if_stats.multicast;
- */
- /* Pass it up the protocol stack */
-
- skb->dev = dev;
- skb->mac.raw = skb->data;
- netif_rx(skb);
- dev->last_rx = jiffies;
- }
-
-rx_exit:
- /* Release buffer element and calculate a pointer to the next one */
- rxbuf->opp_flag = 0x00;
- card->u.c.rxmb = ++ rxbuf;
- if((void*)rxbuf > card->u.c.rxbuf_last){
- card->u.c.rxmb = card->u.c.rxbuf_base;
- }
-}
-
-/*============================================================================
- * Timer interrupt handler.
- * The timer interrupt is used for two purposes:
- * 1) Processing udp calls from 'cpipemon'.
- * 2) Reading board-level statistics for updating the proc file system.
- */
-void timer_intr(sdla_t *card)
-{
- struct net_device* dev;
- chdlc_private_area_t* chdlc_priv_area = NULL;
- SHARED_MEMORY_INFO_STRUCT* flags = NULL;
-
- if ((dev = card->wandev.dev)==NULL){
- flags = card->u.c.flags;
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TIMER;
- return;
- }
-
- chdlc_priv_area = dev->priv;
-
- if (chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_CONFIG) {
- if (!config_chdlc(card)){
- chdlc_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_CONFIG;
- }
- }
-
- /* process a udp call if pending */
- if(chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_UDP) {
- process_udp_mgmt_pkt(card, dev,
- chdlc_priv_area);
- chdlc_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_UDP;
- }
-
- /* read the communications statistics if required */
- if(chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_UPDATE) {
- update_comms_stats(card, chdlc_priv_area);
- if(!(-- chdlc_priv_area->update_comms_stats)) {
- chdlc_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- }
- }
-
- /* only disable the timer interrupt if there are no udp or statistic */
- /* updates pending */
- if(!chdlc_priv_area->timer_int_enabled) {
- flags = card->u.c.flags;
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TIMER;
- }
-}
-
-/*------------------------------------------------------------------------------
- Miscellaneous Functions
- - set_chdlc_config() used to set configuration options on the board
-------------------------------------------------------------------------------*/
-
-static int set_chdlc_config(sdla_t* card)
-{
- CHDLC_CONFIGURATION_STRUCT cfg;
-
- memset(&cfg, 0, sizeof(CHDLC_CONFIGURATION_STRUCT));
-
- if(card->wandev.clocking){
- cfg.baud_rate = card->wandev.bps;
- }
-
- cfg.line_config_options = (card->wandev.interface == WANOPT_RS232) ?
- INTERFACE_LEVEL_RS232 : INTERFACE_LEVEL_V35;
-
- cfg.modem_config_options = 0;
- cfg.modem_status_timer = 100;
-
- cfg.CHDLC_protocol_options = card->u.c.protocol_options;
-
- if (card->tty_opt){
- cfg.CHDLC_API_options = DISCARD_RX_ERROR_FRAMES;
- }
-
- cfg.percent_data_buffer_for_Tx = (card->u.c.receive_only) ? 0 : 50;
- cfg.CHDLC_statistics_options = (CHDLC_TX_DATA_BYTE_COUNT_STAT |
- CHDLC_RX_DATA_BYTE_COUNT_STAT);
-
- if (card->tty_opt){
- card->wandev.mtu = TTY_CHDLC_MAX_MTU;
- }
- cfg.max_CHDLC_data_field_length = card->wandev.mtu;
- cfg.transmit_keepalive_timer = card->u.c.kpalv_tx;
- cfg.receive_keepalive_timer = card->u.c.kpalv_rx;
- cfg.keepalive_error_tolerance = card->u.c.kpalv_err;
- cfg.SLARP_request_timer = card->u.c.slarp_timer;
-
- if (cfg.SLARP_request_timer) {
- cfg.IP_address = 0;
- cfg.IP_netmask = 0;
-
- }else if (card->wandev.dev){
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
-
- struct in_device *in_dev = dev->ip_ptr;
-
- if(in_dev != NULL) {
- struct in_ifaddr *ifa = in_dev->ifa_list;
-
- if (ifa != NULL ) {
- cfg.IP_address = ntohl(ifa->ifa_local);
- cfg.IP_netmask = ntohl(ifa->ifa_mask);
- chdlc_priv_area->IP_address = ntohl(ifa->ifa_local);
- chdlc_priv_area->IP_netmask = ntohl(ifa->ifa_mask);
- }
- }
-
- /* FIXME: We must re-think this message in next release
- if((cfg.IP_address & 0x000000FF) > 2) {
- printk(KERN_WARNING "\n");
- printk(KERN_WARNING " WARNING:%s configured with an\n",
- card->devname);
- printk(KERN_WARNING " invalid local IP address.\n");
- printk(KERN_WARNING " Slarp pragmatics will fail.\n");
- printk(KERN_WARNING " IP address should be of the\n");
- printk(KERN_WARNING " format A.B.C.1 or A.B.C.2.\n");
- }
- */
- }
-
- return chdlc_configure(card, &cfg);
-}
-
-
-/*-----------------------------------------------------------------------------
- set_asy_config() used to set asynchronous configuration options on the board
-------------------------------------------------------------------------------*/
-
-static int set_asy_config(sdla_t* card)
-{
-
- ASY_CONFIGURATION_STRUCT cfg;
- CHDLC_MAILBOX_STRUCT *mailbox = card->mbox;
- int err;
-
- memset(&cfg, 0, sizeof(ASY_CONFIGURATION_STRUCT));
-
- if(card->wandev.clocking)
- cfg.baud_rate = card->wandev.bps;
-
- cfg.line_config_options = (card->wandev.interface == WANOPT_RS232) ?
- INTERFACE_LEVEL_RS232 : INTERFACE_LEVEL_V35;
-
- cfg.modem_config_options = 0;
- cfg.asy_API_options = card->u.c.api_options;
- cfg.asy_protocol_options = card->u.c.protocol_options;
- cfg.Tx_bits_per_char = card->u.c.tx_bits_per_char;
- cfg.Rx_bits_per_char = card->u.c.rx_bits_per_char;
- cfg.stop_bits = card->u.c.stop_bits;
- cfg.parity = card->u.c.parity;
- cfg.break_timer = card->u.c.break_timer;
- cfg.asy_Rx_inter_char_timer = card->u.c.inter_char_timer;
- cfg.asy_Rx_complete_length = card->u.c.rx_complete_length;
- cfg.XON_char = card->u.c.xon_char;
- cfg.XOFF_char = card->u.c.xoff_char;
- cfg.asy_statistics_options = (CHDLC_TX_DATA_BYTE_COUNT_STAT |
- CHDLC_RX_DATA_BYTE_COUNT_STAT);
-
- mailbox->buffer_length = sizeof(ASY_CONFIGURATION_STRUCT);
- memcpy(mailbox->data, &cfg, mailbox->buffer_length);
- mailbox->command = SET_ASY_CONFIGURATION;
- err = sdla_exec(mailbox) ? mailbox->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error (card, err, mailbox);
- return err;
-}
-
-/*============================================================================
- * Enable asynchronous communications.
- */
-
-static int asy_comm_enable (sdla_t* card)
-{
-
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = ENABLE_ASY_COMMUNICATIONS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK && card->wandev.dev)
- chdlc_error(card, err, mb);
-
- if (!err)
- card->u.c.comm_enabled = 1;
-
- return err;
-}
-
-/*============================================================================
- * Process global exception condition
- */
-static int process_global_exception(sdla_t *card)
-{
- CHDLC_MAILBOX_STRUCT* mbox = card->mbox;
- int err;
-
- mbox->buffer_length = 0;
- mbox->command = READ_GLOBAL_EXCEPTION_CONDITION;
- err = sdla_exec(mbox) ? mbox->return_code : CMD_TIMEOUT;
-
- if(err != CMD_TIMEOUT ){
-
- switch(mbox->return_code) {
-
- case EXCEP_MODEM_STATUS_CHANGE:
-
- printk(KERN_INFO "%s: Modem status change\n",
- card->devname);
-
- switch(mbox->data[0] & (DCD_HIGH | CTS_HIGH)) {
- case (DCD_HIGH):
- printk(KERN_INFO "%s: DCD high, CTS low\n",card->devname);
- break;
- case (CTS_HIGH):
- printk(KERN_INFO "%s: DCD low, CTS high\n",card->devname);
- break;
- case ((DCD_HIGH | CTS_HIGH)):
- printk(KERN_INFO "%s: DCD high, CTS high\n",card->devname);
- break;
- default:
- printk(KERN_INFO "%s: DCD low, CTS low\n",card->devname);
- break;
- }
- break;
-
- case EXCEP_TRC_DISABLED:
- printk(KERN_INFO "%s: Line trace disabled\n",
- card->devname);
- break;
-
- case EXCEP_IRQ_TIMEOUT:
- printk(KERN_INFO "%s: IRQ timeout occurred\n",
- card->devname);
- break;
-
- case 0x17:
- if (card->tty_opt){
- if (card->tty && card->tty_open){
- printk(KERN_INFO
- "%s: Modem Hangup Exception: Hanging Up!\n",
- card->devname);
- tty_hangup(card->tty);
- }
- break;
- }
-
- /* If TTY is not used just drop throught */
-
- default:
- printk(KERN_INFO "%s: Global exception %x\n",
- card->devname, mbox->return_code);
- break;
- }
- }
- return 0;
-}
-
-
-/*============================================================================
- * Process chdlc exception condition
- */
-static int process_chdlc_exception(sdla_t *card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int err;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_EXCEPTION_CONDITION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if(err != CMD_TIMEOUT) {
-
- switch (err) {
-
- case EXCEP_LINK_ACTIVE:
- port_set_state(card, WAN_CONNECTED);
- trigger_chdlc_poll(card->wandev.dev);
- break;
-
- case EXCEP_LINK_INACTIVE_MODEM:
- port_set_state(card, WAN_DISCONNECTED);
- unconfigure_ip(card);
- trigger_chdlc_poll(card->wandev.dev);
- break;
-
- case EXCEP_LINK_INACTIVE_KPALV:
- port_set_state(card, WAN_DISCONNECTED);
- printk(KERN_INFO "%s: Keepalive timer expired.\n",
- card->devname);
- unconfigure_ip(card);
- trigger_chdlc_poll(card->wandev.dev);
- break;
-
- case EXCEP_IP_ADDRESS_DISCOVERED:
- if (configure_ip(card))
- return -1;
- break;
-
- case EXCEP_LOOPBACK_CONDITION:
- printk(KERN_INFO "%s: Loopback Condition Detected.\n",
- card->devname);
- break;
-
- case NO_CHDLC_EXCEP_COND_TO_REPORT:
- printk(KERN_INFO "%s: No exceptions reported.\n",
- card->devname);
- break;
- }
-
- }
- return 0;
-}
-
-
-/*============================================================================
- * Configure IP from SLARP negotiation
- * This adds dynamic routes when SLARP has provided valid addresses
- */
-
-static int configure_ip (sdla_t* card)
-{
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area;
- char err;
-
- if (!dev)
- return 0;
-
- chdlc_priv_area = dev->priv;
-
-
- /* set to discover */
- if(card->u.c.slarp_timer != 0x00) {
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_CONFIGURATION_STRUCT *cfg;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CONFIGURATION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if(err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- return -1;
- }
-
- cfg = (CHDLC_CONFIGURATION_STRUCT *)mb->data;
- chdlc_priv_area->IP_address = cfg->IP_address;
- chdlc_priv_area->IP_netmask = cfg->IP_netmask;
-
- /* Set flag to add route */
- chdlc_priv_area->route_status = ADD_ROUTE;
-
- /* The idea here is to add the route in the poll routine.
- This way, we aren't in interrupt context when adding routes */
- trigger_chdlc_poll(dev);
- }
-
- return 0;
-}
-
-
-/*============================================================================
- * Un-Configure IP negotiated by SLARP
- * This removes dynamic routes when the link becomes inactive.
- */
-
-static int unconfigure_ip (sdla_t* card)
-{
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area;
-
- if (!dev)
- return 0;
-
- chdlc_priv_area= dev->priv;
-
- if (chdlc_priv_area->route_status == ROUTE_ADDED) {
-
- /* Note: If this function is called, the
- * port state has been DISCONNECTED. This state
- * change will trigger a poll_disconnected
- * function, that will check for this condition.
- */
- chdlc_priv_area->route_status = REMOVE_ROUTE;
-
- }
- return 0;
-}
-
-/*============================================================================
- * Routine to add/remove routes
- * Called like a polling routine when Routes are flagged to be added/removed.
- */
-
-static void process_route (sdla_t *card)
-{
- struct net_device *dev = card->wandev.dev;
- unsigned char port_num;
- chdlc_private_area_t *chdlc_priv_area = NULL;
- u32 local_IP_addr = 0;
- u32 remote_IP_addr = 0;
- u32 IP_netmask, IP_addr;
- int err = 0;
- struct in_device *in_dev;
- mm_segment_t fs;
- struct ifreq if_info;
- struct sockaddr_in *if_data1, *if_data2;
-
- chdlc_priv_area = dev->priv;
- port_num = card->u.c.comm_port;
-
- /* Bug Fix Mar 16 2000
- * AND the IP address to the Mask before checking
- * the last two bits. */
-
- if((chdlc_priv_area->route_status == ADD_ROUTE) &&
- ((chdlc_priv_area->IP_address & ~chdlc_priv_area->IP_netmask) > 2)) {
-
- printk(KERN_INFO "%s: Dynamic route failure.\n",card->devname);
-
- if(card->u.c.slarp_timer) {
- u32 addr_net = htonl(chdlc_priv_area->IP_address);
-
- printk(KERN_INFO "%s: Bad IP address %u.%u.%u.%u received\n",
- card->devname,
- NIPQUAD(addr_net));
- printk(KERN_INFO "%s: from remote station.\n",
- card->devname);
-
- }else{
- u32 addr_net = htonl(chdlc_priv_area->IP_address);
-
- printk(KERN_INFO "%s: Bad IP address %u.%u.%u.%u issued\n",
- card->devname,
- NIPQUAD(addr_net));
- printk(KERN_INFO "%s: to remote station. Local\n",
- card->devname);
- printk(KERN_INFO "%s: IP address must be A.B.C.1\n",
- card->devname);
- printk(KERN_INFO "%s: or A.B.C.2.\n",card->devname);
- }
-
- /* remove the route due to the IP address error condition */
- chdlc_priv_area->route_status = REMOVE_ROUTE;
- err = 1;
- }
-
- /* If we are removing a route with bad IP addressing, then use the */
- /* locally configured IP addresses */
- if((chdlc_priv_area->route_status == REMOVE_ROUTE) && err) {
-
- /* do not remove a bad route that has already been removed */
- if(chdlc_priv_area->route_removed) {
- return;
- }
-
- in_dev = dev->ip_ptr;
-
- if(in_dev != NULL) {
- struct in_ifaddr *ifa = in_dev->ifa_list;
- if (ifa != NULL ) {
- local_IP_addr = ifa->ifa_local;
- IP_netmask = ifa->ifa_mask;
- }
- }
- }else{
- /* According to Cisco HDLC, if the point-to-point address is
- A.B.C.1, then we are the opposite (A.B.C.2), and vice-versa.
- */
- IP_netmask = ntohl(chdlc_priv_area->IP_netmask);
- remote_IP_addr = ntohl(chdlc_priv_area->IP_address);
-
-
- /* If Netmask is 255.255.255.255 the local address
- * calculation will fail. Default it back to 255.255.255.0 */
- if (IP_netmask == 0xffffffff)
- IP_netmask &= 0x00ffffff;
-
- /* Bug Fix Mar 16 2000
- * AND the Remote IP address with IP netmask, instead
- * of static netmask of 255.255.255.0 */
- local_IP_addr = (remote_IP_addr & IP_netmask) +
- (~remote_IP_addr & ntohl(0x0003));
-
- if(!card->u.c.slarp_timer) {
- IP_addr = local_IP_addr;
- local_IP_addr = remote_IP_addr;
- remote_IP_addr = IP_addr;
- }
- }
-
- fs = get_fs(); /* Save file system */
- set_fs(get_ds()); /* Get user space block */
-
- /* Setup a structure for adding/removing routes */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
- switch (chdlc_priv_area->route_status) {
-
- case ADD_ROUTE:
-
- if(!card->u.c.slarp_timer) {
- if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data2->sin_addr.s_addr = remote_IP_addr;
- if_data2->sin_family = AF_INET;
- err = devinet_ioctl(SIOCSIFDSTADDR, &if_info);
- } else {
- if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
- if_data1->sin_addr.s_addr = local_IP_addr;
- if_data1->sin_family = AF_INET;
- if(!(err = devinet_ioctl(SIOCSIFADDR, &if_info))){
- if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data2->sin_addr.s_addr = remote_IP_addr;
- if_data2->sin_family = AF_INET;
- err = devinet_ioctl(SIOCSIFDSTADDR, &if_info);
- }
- }
-
- if(err) {
- printk(KERN_INFO "%s: Add route %u.%u.%u.%u failed (%d)\n",
- card->devname, NIPQUAD(remote_IP_addr), err);
- } else {
- ((chdlc_private_area_t *)dev->priv)->route_status = ROUTE_ADDED;
- printk(KERN_INFO "%s: Dynamic route added.\n",
- card->devname);
- printk(KERN_INFO "%s: Local IP addr : %u.%u.%u.%u\n",
- card->devname, NIPQUAD(local_IP_addr));
- printk(KERN_INFO "%s: Remote IP addr: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(remote_IP_addr));
- chdlc_priv_area->route_removed = 0;
- }
- break;
-
-
- case REMOVE_ROUTE:
-
- /* Change the local ip address of the interface to 0.
- * This will also delete the destination route.
- */
- if(!card->u.c.slarp_timer) {
- if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data2->sin_addr.s_addr = 0;
- if_data2->sin_family = AF_INET;
- err = devinet_ioctl(SIOCSIFDSTADDR, &if_info);
- } else {
- if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
- if_data1->sin_addr.s_addr = 0;
- if_data1->sin_family = AF_INET;
- err = devinet_ioctl(SIOCSIFADDR,&if_info);
-
- }
- if(err) {
- printk(KERN_INFO
- "%s: Remove route %u.%u.%u.%u failed, (err %d)\n",
- card->devname, NIPQUAD(remote_IP_addr),
- err);
- } else {
- ((chdlc_private_area_t *)dev->priv)->route_status =
- NO_ROUTE;
- printk(KERN_INFO "%s: Dynamic route removed: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(local_IP_addr));
- chdlc_priv_area->route_removed = 1;
- }
- break;
- }
-
- set_fs(fs); /* Restore file system */
-
-}
-
-
-/*=============================================================================
- * Store a UDP management packet for later processing.
- */
-
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area)
-{
- int udp_pkt_stored = 0;
-
- if(!chdlc_priv_area->udp_pkt_lgth &&
- (skb->len <= MAX_LGTH_UDP_MGNT_PKT)) {
- chdlc_priv_area->udp_pkt_lgth = skb->len;
- chdlc_priv_area->udp_pkt_src = udp_pkt_src;
- memcpy(chdlc_priv_area->udp_pkt_data, skb->data, skb->len);
- chdlc_priv_area->timer_int_enabled = TMR_INT_ENABLED_UDP;
- udp_pkt_stored = 1;
- }
-
- if(udp_pkt_src == UDP_PKT_FRM_STACK){
- dev_kfree_skb_any(skb);
- }else{
- dev_kfree_skb_any(skb);
- }
-
- return(udp_pkt_stored);
-}
-
-
-/*=============================================================================
- * Process UDP management packet.
- */
-
-static int process_udp_mgmt_pkt(sdla_t* card, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area )
-{
- unsigned char *buf;
- unsigned int frames, len;
- struct sk_buff *new_skb;
- unsigned short buffer_length, real_len;
- unsigned long data_ptr;
- unsigned data_length;
- int udp_mgmt_req_valid = 1;
- CHDLC_MAILBOX_STRUCT *mb = card->mbox;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- chdlc_udp_pkt_t *chdlc_udp_pkt;
- struct timeval tv;
- int err;
- char ut_char;
-
- chdlc_udp_pkt = (chdlc_udp_pkt_t *) chdlc_priv_area->udp_pkt_data;
-
- if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK){
-
- /* Only these commands are support for remote debugging.
- * All others are not */
- switch(chdlc_udp_pkt->cblock.command) {
-
- case READ_GLOBAL_STATISTICS:
- case READ_MODEM_STATUS:
- case READ_CHDLC_LINK_STATUS:
- case CPIPE_ROUTER_UP_TIME:
- case READ_COMMS_ERROR_STATS:
- case READ_CHDLC_OPERATIONAL_STATS:
-
- /* These two commands are executed for
- * each request */
- case READ_CHDLC_CONFIGURATION:
- case READ_CHDLC_CODE_VERSION:
- udp_mgmt_req_valid = 1;
- break;
- default:
- udp_mgmt_req_valid = 0;
- break;
- }
- }
-
- if(!udp_mgmt_req_valid) {
-
- /* set length to 0 */
- chdlc_udp_pkt->cblock.buffer_length = 0;
-
- /* set return code */
- chdlc_udp_pkt->cblock.return_code = 0xCD;
-
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Warning, Illegal UDP command attempted from network: %x\n",
- card->devname,chdlc_udp_pkt->cblock.command);
- }
-
- } else {
- unsigned long trace_status_cfg_addr = 0;
- TRACE_STATUS_EL_CFG_STRUCT trace_cfg_struct;
- TRACE_STATUS_ELEMENT_STRUCT trace_element_struct;
-
- switch(chdlc_udp_pkt->cblock.command) {
-
- case CPIPE_ENABLE_TRACING:
- if (!chdlc_priv_area->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
-
- mb->buffer_length = sizeof(LINE_TRACE_CONFIG_STRUCT);
- mb->command = SET_TRACE_CONFIGURATION;
-
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
- trace_config = TRACE_ACTIVE;
- /* Trace delay mode is not used because it slows
- down transfer and results in a standoff situation
- when there is a lot of data */
-
- /* Configure the Trace based on user inputs */
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->trace_config |=
- chdlc_udp_pkt->data[0];
-
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
- trace_deactivation_timer = 4000;
-
-
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- card->TracingEnabled = 0;
- chdlc_udp_pkt->cblock.return_code = err;
- mb->buffer_length = 0;
- break;
- }
-
- /* Get the base address of the trace element list */
- mb->buffer_length = 0;
- mb->command = READ_TRACE_CONFIGURATION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if (err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- chdlc_priv_area->TracingEnabled = 0;
- chdlc_udp_pkt->cblock.return_code = err;
- mb->buffer_length = 0;
- break;
- }
-
- trace_status_cfg_addr =((LINE_TRACE_CONFIG_STRUCT *)
- mb->data) -> ptr_trace_stat_el_cfg_struct;
-
- sdla_peek(&card->hw, trace_status_cfg_addr,
- &trace_cfg_struct, sizeof(trace_cfg_struct));
-
- chdlc_priv_area->start_trace_addr = trace_cfg_struct.
- base_addr_trace_status_elements;
-
- chdlc_priv_area->number_trace_elements =
- trace_cfg_struct.number_trace_status_elements;
-
- chdlc_priv_area->end_trace_addr = (unsigned long)
- ((TRACE_STATUS_ELEMENT_STRUCT *)
- chdlc_priv_area->start_trace_addr +
- (chdlc_priv_area->number_trace_elements - 1));
-
- chdlc_priv_area->base_addr_trace_buffer =
- trace_cfg_struct.base_addr_trace_buffer;
-
- chdlc_priv_area->end_addr_trace_buffer =
- trace_cfg_struct.end_addr_trace_buffer;
-
- chdlc_priv_area->curr_trace_addr =
- trace_cfg_struct.next_trace_element_to_use;
-
- chdlc_priv_area->available_buffer_space = 2000 -
- sizeof(ip_pkt_t) -
- sizeof(udp_pkt_t) -
- sizeof(wp_mgmt_t) -
- sizeof(cblock_t) -
- sizeof(trace_info_t);
- }
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- mb->buffer_length = 0;
- chdlc_priv_area->TracingEnabled = 1;
- break;
-
-
- case CPIPE_DISABLE_TRACING:
- if (chdlc_priv_area->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
- mb->buffer_length = sizeof(LINE_TRACE_CONFIG_STRUCT);
- mb->command = SET_TRACE_CONFIGURATION;
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
- trace_config = TRACE_INACTIVE;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- }
-
- chdlc_priv_area->TracingEnabled = 0;
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- mb->buffer_length = 0;
- break;
-
-
- case CPIPE_GET_TRACE_INFO:
-
- if (!chdlc_priv_area->TracingEnabled) {
- chdlc_udp_pkt->cblock.return_code = 1;
- mb->buffer_length = 0;
- break;
- }
-
- chdlc_udp_pkt->trace_info.ismoredata = 0x00;
- buffer_length = 0; /* offset of packet already occupied */
-
- for (frames=0; frames < chdlc_priv_area->number_trace_elements; frames++){
-
- trace_pkt_t *trace_pkt = (trace_pkt_t *)
- &chdlc_udp_pkt->data[buffer_length];
-
- sdla_peek(&card->hw, chdlc_priv_area->curr_trace_addr,
- (unsigned char *)&trace_element_struct,
- sizeof(TRACE_STATUS_ELEMENT_STRUCT));
-
- if (trace_element_struct.opp_flag == 0x00) {
- break;
- }
-
- /* get pointer to real data */
- data_ptr = trace_element_struct.ptr_data_bfr;
-
- /* See if there is actual data on the trace buffer */
- if (data_ptr){
- data_length = trace_element_struct.trace_length;
- }else{
- data_length = 0;
- chdlc_udp_pkt->trace_info.ismoredata = 0x01;
- }
-
- if( (chdlc_priv_area->available_buffer_space - buffer_length)
- < ( sizeof(trace_pkt_t) + data_length) ) {
-
- /* indicate there are more frames on board & exit */
- chdlc_udp_pkt->trace_info.ismoredata = 0x01;
- break;
- }
-
- trace_pkt->status = trace_element_struct.trace_type;
-
- trace_pkt->time_stamp =
- trace_element_struct.trace_time_stamp;
-
- trace_pkt->real_length =
- trace_element_struct.trace_length;
-
- /* see if we can fit the frame into the user buffer */
- real_len = trace_pkt->real_length;
-
- if (data_ptr == 0) {
- trace_pkt->data_avail = 0x00;
- } else {
- unsigned tmp = 0;
-
- /* get the data from circular buffer
- must check for end of buffer */
- trace_pkt->data_avail = 0x01;
-
- if ((data_ptr + real_len) >
- chdlc_priv_area->end_addr_trace_buffer + 1){
-
- tmp = chdlc_priv_area->end_addr_trace_buffer - data_ptr + 1;
- sdla_peek(&card->hw, data_ptr,
- trace_pkt->data,tmp);
- data_ptr = chdlc_priv_area->base_addr_trace_buffer;
- }
-
- sdla_peek(&card->hw, data_ptr,
- &trace_pkt->data[tmp], real_len - tmp);
- }
-
- /* zero the opp flag to show we got the frame */
- ut_char = 0x00;
- sdla_poke(&card->hw, chdlc_priv_area->curr_trace_addr, &ut_char, 1);
-
- /* now move onto the next frame */
- chdlc_priv_area->curr_trace_addr += sizeof(TRACE_STATUS_ELEMENT_STRUCT);
-
- /* check if we went over the last address */
- if ( chdlc_priv_area->curr_trace_addr > chdlc_priv_area->end_trace_addr ) {
- chdlc_priv_area->curr_trace_addr = chdlc_priv_area->start_trace_addr;
- }
-
- if(trace_pkt->data_avail == 0x01) {
- buffer_length += real_len - 1;
- }
-
- /* for the header */
- buffer_length += sizeof(trace_pkt_t);
-
- } /* For Loop */
-
- if (frames == chdlc_priv_area->number_trace_elements){
- chdlc_udp_pkt->trace_info.ismoredata = 0x01;
- }
- chdlc_udp_pkt->trace_info.num_frames = frames;
-
- mb->buffer_length = buffer_length;
- chdlc_udp_pkt->cblock.buffer_length = buffer_length;
-
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
-
- break;
-
-
- case CPIPE_FT1_READ_STATUS:
- ((unsigned char *)chdlc_udp_pkt->data )[0] =
- flags->FT1_info_struct.parallel_port_A_input;
-
- ((unsigned char *)chdlc_udp_pkt->data )[1] =
- flags->FT1_info_struct.parallel_port_B_input;
-
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- chdlc_udp_pkt->cblock.buffer_length = 2;
- mb->buffer_length = 2;
- break;
-
- case CPIPE_ROUTER_UP_TIME:
- do_gettimeofday( &tv );
- chdlc_priv_area->router_up_time = tv.tv_sec -
- chdlc_priv_area->router_start_time;
- *(unsigned long *)&chdlc_udp_pkt->data =
- chdlc_priv_area->router_up_time;
- mb->buffer_length = sizeof(unsigned long);
- chdlc_udp_pkt->cblock.buffer_length = sizeof(unsigned long);
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- break;
-
- case FT1_MONITOR_STATUS_CTRL:
- /* Enable FT1 MONITOR STATUS */
- if ((chdlc_udp_pkt->data[0] & ENABLE_READ_FT1_STATUS) ||
- (chdlc_udp_pkt->data[0] & ENABLE_READ_FT1_OP_STATS)) {
-
- if( rCount++ != 0 ) {
- chdlc_udp_pkt->cblock.
- return_code = COMMAND_OK;
- mb->buffer_length = 1;
- break;
- }
- }
-
- /* Disable FT1 MONITOR STATUS */
- if( chdlc_udp_pkt->data[0] == 0) {
-
- if( --rCount != 0) {
- chdlc_udp_pkt->cblock.
- return_code = COMMAND_OK;
- mb->buffer_length = 1;
- break;
- }
- }
- goto dflt_1;
-
- default:
-dflt_1:
- /* it's a board command */
- mb->command = chdlc_udp_pkt->cblock.command;
- mb->buffer_length = chdlc_udp_pkt->cblock.buffer_length;
- if (mb->buffer_length) {
- memcpy(&mb->data, (unsigned char *) chdlc_udp_pkt->
- data, mb->buffer_length);
- }
- /* run the command on the board */
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK) {
- break;
- }
-
- /* copy the result back to our buffer */
- memcpy(&chdlc_udp_pkt->cblock, mb, sizeof(cblock_t));
-
- if (mb->buffer_length) {
- memcpy(&chdlc_udp_pkt->data, &mb->data,
- mb->buffer_length);
- }
-
- } /* end of switch */
- } /* end of else */
-
- /* Fill UDP TTL */
- chdlc_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
-
- len = reply_udp(chdlc_priv_area->udp_pkt_data, mb->buffer_length);
-
-
- if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK){
-
- /* Must check if we interrupted if_send() routine. The
- * tx buffers might be used. If so drop the packet */
- if (!test_bit(SEND_CRIT,&card->wandev.critical)) {
-
- if(!chdlc_send(card, chdlc_priv_area->udp_pkt_data, len)) {
- ++ card->wandev.stats.tx_packets;
- card->wandev.stats.tx_bytes += len;
- }
- }
- } else {
-
- /* Pass it up the stack
- Allocate socket buffer */
- if ((new_skb = dev_alloc_skb(len)) != NULL) {
- /* copy data into new_skb */
-
- buf = skb_put(new_skb, len);
- memcpy(buf, chdlc_priv_area->udp_pkt_data, len);
-
- /* Decapsulate pkt and pass it up the protocol stack */
- new_skb->protocol = htons(ETH_P_IP);
- new_skb->dev = dev;
- new_skb->mac.raw = new_skb->data;
-
- netif_rx(new_skb);
- dev->last_rx = jiffies;
- } else {
-
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- }
- }
-
- chdlc_priv_area->udp_pkt_lgth = 0;
-
- return 0;
-}
-
-/*============================================================================
- * Initialize Receive and Transmit Buffers.
- */
-
-static void init_chdlc_tx_rx_buff( sdla_t* card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_TX_STATUS_EL_CFG_STRUCT *tx_config;
- CHDLC_RX_STATUS_EL_CFG_STRUCT *rx_config;
- char err;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CONFIGURATION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if(err != COMMAND_OK) {
- if (card->wandev.dev){
- chdlc_error(card,err,mb);
- }
- return;
- }
-
- if(card->hw.type == SDLA_S514) {
- tx_config = (CHDLC_TX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Tx_stat_el_cfg_struct));
- rx_config = (CHDLC_RX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Rx_stat_el_cfg_struct));
-
- /* Setup Head and Tails for buffers */
- card->u.c.txbuf_base = (void *)(card->hw.dpmbase +
- tx_config->base_addr_Tx_status_elements);
- card->u.c.txbuf_last =
- (CHDLC_DATA_TX_STATUS_EL_STRUCT *)
- card->u.c.txbuf_base +
- (tx_config->number_Tx_status_elements - 1);
-
- card->u.c.rxbuf_base = (void *)(card->hw.dpmbase +
- rx_config->base_addr_Rx_status_elements);
- card->u.c.rxbuf_last =
- (CHDLC_DATA_RX_STATUS_EL_STRUCT *)
- card->u.c.rxbuf_base +
- (rx_config->number_Rx_status_elements - 1);
-
- /* Set up next pointer to be used */
- card->u.c.txbuf = (void *)(card->hw.dpmbase +
- tx_config->next_Tx_status_element_to_use);
- card->u.c.rxmb = (void *)(card->hw.dpmbase +
- rx_config->next_Rx_status_element_to_use);
- }
- else {
- tx_config = (CHDLC_TX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Tx_stat_el_cfg_struct % SDLA_WINDOWSIZE));
-
- rx_config = (CHDLC_RX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Rx_stat_el_cfg_struct % SDLA_WINDOWSIZE));
-
- /* Setup Head and Tails for buffers */
- card->u.c.txbuf_base = (void *)(card->hw.dpmbase +
- (tx_config->base_addr_Tx_status_elements % SDLA_WINDOWSIZE));
- card->u.c.txbuf_last =
- (CHDLC_DATA_TX_STATUS_EL_STRUCT *)card->u.c.txbuf_base
- + (tx_config->number_Tx_status_elements - 1);
- card->u.c.rxbuf_base = (void *)(card->hw.dpmbase +
- (rx_config->base_addr_Rx_status_elements % SDLA_WINDOWSIZE));
- card->u.c.rxbuf_last =
- (CHDLC_DATA_RX_STATUS_EL_STRUCT *)card->u.c.rxbuf_base
- + (rx_config->number_Rx_status_elements - 1);
-
- /* Set up next pointer to be used */
- card->u.c.txbuf = (void *)(card->hw.dpmbase +
- (tx_config->next_Tx_status_element_to_use % SDLA_WINDOWSIZE));
- card->u.c.rxmb = (void *)(card->hw.dpmbase +
- (rx_config->next_Rx_status_element_to_use % SDLA_WINDOWSIZE));
- }
-
- /* Setup Actual Buffer Start and end addresses */
- card->u.c.rx_base = rx_config->base_addr_Rx_buffer;
- card->u.c.rx_top = rx_config->end_addr_Rx_buffer;
-
-}
-
-/*=============================================================================
- * Perform Interrupt Test by running READ_CHDLC_CODE_VERSION command MAX_INTR
- * _TEST_COUNTER times.
- */
-static int intr_test( sdla_t* card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int err,i;
-
- Intr_test_counter = 0;
-
- err = chdlc_set_intr_mode(card, APP_INT_ON_COMMAND_COMPLETE);
-
- if (err == CMD_OK) {
- for (i = 0; i < MAX_INTR_TEST_COUNTER; i ++) {
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CODE_VERSION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != CMD_OK)
- chdlc_error(card, err, mb);
- }
- }
- else {
- return err;
- }
-
- err = chdlc_set_intr_mode(card, 0);
-
- if (err != CMD_OK)
- return err;
-
- return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. CPIPEAB ?
- */
-static int udp_pkt_type(struct sk_buff *skb, sdla_t* card)
-{
- chdlc_udp_pkt_t *chdlc_udp_pkt = (chdlc_udp_pkt_t *)skb->data;
-
-#ifdef _WAN_UDP_DEBUG
- printk(KERN_INFO "SIG %s = %s\n\
- UPP %x = %x\n\
- PRT %x = %x\n\
- REQ %i = %i\n\
- 36 th = %x 37th = %x\n",
- chdlc_udp_pkt->wp_mgmt.signature,
- UDPMGMT_SIGNATURE,
- chdlc_udp_pkt->udp_pkt.udp_dst_port,
- ntohs(card->wandev.udp_port),
- chdlc_udp_pkt->ip_pkt.protocol,
- UDPMGMT_UDP_PROTOCOL,
- chdlc_udp_pkt->wp_mgmt.request_reply,
- UDPMGMT_REQUEST,
- skb->data[36], skb->data[37]);
-#endif
-
- if (!strncmp(chdlc_udp_pkt->wp_mgmt.signature,UDPMGMT_SIGNATURE,8) &&
- (chdlc_udp_pkt->udp_pkt.udp_dst_port == ntohs(card->wandev.udp_port)) &&
- (chdlc_udp_pkt->ip_pkt.protocol == UDPMGMT_UDP_PROTOCOL) &&
- (chdlc_udp_pkt->wp_mgmt.request_reply == UDPMGMT_REQUEST)) {
-
- return UDP_CPIPE_TYPE;
-
- }else{
- return UDP_INVALID_TYPE;
- }
-}
-
-/*============================================================================
- * Set PORT state.
- */
-static void port_set_state (sdla_t *card, int state)
-{
- if (card->u.c.state != state)
- {
- switch (state)
- {
- case WAN_CONNECTED:
- printk (KERN_INFO "%s: Link connected!\n",
- card->devname);
- break;
-
- case WAN_CONNECTING:
- printk (KERN_INFO "%s: Link connecting...\n",
- card->devname);
- break;
-
- case WAN_DISCONNECTED:
- printk (KERN_INFO "%s: Link disconnected!\n",
- card->devname);
- break;
- }
-
- card->wandev.state = card->u.c.state = state;
- if (card->wandev.dev){
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
- chdlc_priv_area->common.state = state;
- }
- }
-}
-
-/*===========================================================================
- * config_chdlc
- *
- * Configure the chdlc protocol and enable communications.
- *
- * The if_open() function binds this function to the poll routine.
- * Therefore, this function will run every time the chdlc interface
- * is brought up. We cannot run this function from the if_open
- * because if_open does not have access to the remote IP address.
- *
- * If the communications are not enabled, proceed to configure
- * the card and enable communications.
- *
- * If the communications are enabled, it means that the interface
- * was shutdown by ether the user or driver. In this case, we
- * have to check that the IP addresses have not changed. If
- * the IP addresses have changed, we have to reconfigure the firmware
- * and update the changed IP addresses. Otherwise, just exit.
- *
- */
-
-static int config_chdlc (sdla_t *card)
-{
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
- if (card->u.c.comm_enabled){
-
- /* Jun 20. 2000: NC
- * IP addresses are not used in the API mode */
-
- if ((chdlc_priv_area->ip_local_tmp != chdlc_priv_area->ip_local ||
- chdlc_priv_area->ip_remote_tmp != chdlc_priv_area->ip_remote) &&
- card->u.c.usedby == WANPIPE) {
-
- /* The IP addersses have changed, we must
- * stop the communications and reconfigure
- * the card. Reason: the firmware must know
- * the local and remote IP addresses. */
- disable_comm(card);
- port_set_state(card, WAN_DISCONNECTED);
- printk(KERN_INFO
- "%s: IP addresses changed!\n",
- card->devname);
- printk(KERN_INFO
- "%s: Restarting communications ...\n",
- card->devname);
- }else{
- /* IP addresses are the same and the link is up,
- * we don't have to do anything here. Therefore, exit */
- return 0;
- }
- }
-
- chdlc_priv_area->ip_local = chdlc_priv_area->ip_local_tmp;
- chdlc_priv_area->ip_remote = chdlc_priv_area->ip_remote_tmp;
-
-
- /* Setup the Board for asynchronous mode */
- if (card->u.c.async_mode){
-
- if (set_asy_config(card)) {
- printk (KERN_INFO "%s: Failed CHDLC Async configuration!\n",
- card->devname);
- return 0;
- }
- }else{
- /* Setup the Board for CHDLC */
- if (set_chdlc_config(card)) {
- printk (KERN_INFO "%s: Failed CHDLC configuration!\n",
- card->devname);
- return 0;
- }
- }
-
- /* Set interrupt mode and mask */
- if (chdlc_set_intr_mode(card, APP_INT_ON_RX_FRAME |
- APP_INT_ON_GLOBAL_EXCEP_COND |
- APP_INT_ON_TX_FRAME |
- APP_INT_ON_CHDLC_EXCEP_COND | APP_INT_ON_TIMER)){
- printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
- card->devname);
- return 0;
- }
-
-
- /* Mask the Transmit and Timer interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~(APP_INT_ON_TX_FRAME | APP_INT_ON_TIMER);
-
- /* In TTY mode, receive interrupt will be enabled during
- * wanpipe_tty_open() operation */
- if (card->tty_opt){
- flags->interrupt_info_struct.interrupt_permission &= ~APP_INT_ON_RX_FRAME;
- }
-
- /* Enable communications */
- if (card->u.c.async_mode){
- if (asy_comm_enable(card) != 0) {
- printk(KERN_INFO "%s: Failed to enable async commnunication!\n",
- card->devname);
- flags->interrupt_info_struct.interrupt_permission = 0;
- card->u.c.comm_enabled=0;
- chdlc_set_intr_mode(card,0);
- return 0;
- }
- }else{
- if (chdlc_comm_enable(card) != 0) {
- printk(KERN_INFO "%s: Failed to enable chdlc communications!\n",
- card->devname);
- flags->interrupt_info_struct.interrupt_permission = 0;
- card->u.c.comm_enabled=0;
- chdlc_set_intr_mode(card,0);
- return 0;
- }
- }
-
- /* Initialize Rx/Tx buffer control fields */
- init_chdlc_tx_rx_buff(card);
- port_set_state(card, WAN_CONNECTING);
- return 0;
-}
-
-
-/*============================================================
- * chdlc_poll
- *
- * Rationale:
- * We cannot manipulate the routing tables, or
- * ip addresses withing the interrupt. Therefore
- * we must perform such actons outside an interrupt
- * at a later time.
- *
- * Description:
- * CHDLC polling routine, responsible for
- * shutting down interfaces upon disconnect
- * and adding/removing routes.
- *
- * Usage:
- * This function is executed for each CHDLC
- * interface through a tq_schedule bottom half.
- *
- * trigger_chdlc_poll() function is used to kick
- * the chldc_poll routine.
- */
-
-static void chdlc_poll(struct net_device *dev)
-{
- chdlc_private_area_t *chdlc_priv_area;
- sdla_t *card;
- u8 check_gateway=0;
- SHARED_MEMORY_INFO_STRUCT* flags;
-
-
- if (!dev || (chdlc_priv_area=dev->priv) == NULL)
- return;
-
- card = chdlc_priv_area->card;
- flags = card->u.c.flags;
-
- /* (Re)Configuraiton is in progress, stop what you are
- * doing and get out */
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- clear_bit(POLL_CRIT,&card->wandev.critical);
- return;
- }
-
- /* if_open() function has triggered the polling routine
- * to determine the configured IP addresses. Once the
- * addresses are found, trigger the chdlc configuration */
- if (test_bit(0,&chdlc_priv_area->config_chdlc)){
-
- chdlc_priv_area->ip_local_tmp = get_ip_address(dev,WAN_LOCAL_IP);
- chdlc_priv_area->ip_remote_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP);
-
- /* Jun 20. 2000 Bug Fix
- * Only perform this check in WANPIPE mode, since
- * IP addresses are not used in the API mode. */
-
- if (chdlc_priv_area->ip_local_tmp == chdlc_priv_area->ip_remote_tmp &&
- card->u.c.slarp_timer == 0x00 &&
- !card->u.c.backup &&
- card->u.c.usedby == WANPIPE){
-
- if (++chdlc_priv_area->ip_error > MAX_IP_ERRORS){
- printk(KERN_INFO "\n%s: --- WARNING ---\n",
- card->devname);
- printk(KERN_INFO
- "%s: The local IP address is the same as the\n",
- card->devname);
- printk(KERN_INFO
- "%s: Point-to-Point IP address.\n",
- card->devname);
- printk(KERN_INFO "%s: --- WARNING ---\n\n",
- card->devname);
- }else{
- clear_bit(POLL_CRIT,&card->wandev.critical);
- chdlc_priv_area->poll_delay_timer.expires = jiffies+HZ;
- add_timer(&chdlc_priv_area->poll_delay_timer);
- return;
- }
- }
-
- clear_bit(0,&chdlc_priv_area->config_chdlc);
- clear_bit(POLL_CRIT,&card->wandev.critical);
-
- chdlc_priv_area->timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
- flags->interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
- return;
- }
- /* Dynamic interface implementation, as well as dynamic
- * routing. */
-
- switch (card->u.c.state){
-
- case WAN_DISCONNECTED:
-
- /* If the dynamic interface configuration is on, and interface
- * is up, then bring down the netowrk interface */
-
- if (test_bit(DYN_OPT_ON,&chdlc_priv_area->interface_down) &&
- !test_bit(DEV_DOWN, &chdlc_priv_area->interface_down) &&
- card->wandev.dev->flags & IFF_UP){
-
- printk(KERN_INFO "%s: Interface %s down.\n",
- card->devname,card->wandev.dev->name);
- change_dev_flags(card->wandev.dev,(card->wandev.dev->flags&~IFF_UP));
- set_bit(DEV_DOWN,&chdlc_priv_area->interface_down);
- chdlc_priv_area->route_status = NO_ROUTE;
-
- }else{
- /* We need to check if the local IP address is
- * zero. If it is, we shouldn't try to remove it.
- */
-
- if (card->wandev.dev->flags & IFF_UP &&
- get_ip_address(card->wandev.dev,WAN_LOCAL_IP) &&
- chdlc_priv_area->route_status != NO_ROUTE &&
- card->u.c.slarp_timer){
-
- process_route(card);
- }
- }
- break;
-
- case WAN_CONNECTED:
-
- /* In SMP machine this code can execute before the interface
- * comes up. In this case, we must make sure that we do not
- * try to bring up the interface before dev_open() is finished */
-
-
- /* DEV_DOWN will be set only when we bring down the interface
- * for the very first time. This way we know that it was us
- * that brought the interface down */
-
- if (test_bit(DYN_OPT_ON,&chdlc_priv_area->interface_down) &&
- test_bit(DEV_DOWN, &chdlc_priv_area->interface_down) &&
- !(card->wandev.dev->flags & IFF_UP)){
-
- printk(KERN_INFO "%s: Interface %s up.\n",
- card->devname,card->wandev.dev->name);
- change_dev_flags(card->wandev.dev,(card->wandev.dev->flags|IFF_UP));
- clear_bit(DEV_DOWN,&chdlc_priv_area->interface_down);
- check_gateway=1;
- }
-
- if (chdlc_priv_area->route_status == ADD_ROUTE &&
- card->u.c.slarp_timer){
-
- process_route(card);
- check_gateway=1;
- }
-
- if (chdlc_priv_area->gateway && check_gateway)
- add_gateway(card,dev);
-
- break;
- }
-
- clear_bit(POLL_CRIT,&card->wandev.critical);
-}
-
-/*============================================================
- * trigger_chdlc_poll
- *
- * Description:
- * Add a chdlc_poll() work entry into the keventd work queue
- * for a specific dlci/interface. This will kick
- * the fr_poll() routine at a later time.
- *
- * Usage:
- * Interrupts use this to defer a taks to
- * a polling routine.
- *
- */
-static void trigger_chdlc_poll(struct net_device *dev)
-{
- chdlc_private_area_t *chdlc_priv_area;
- sdla_t *card;
-
- if (!dev)
- return;
-
- if ((chdlc_priv_area = dev->priv)==NULL)
- return;
-
- card = chdlc_priv_area->card;
-
- if (test_and_set_bit(POLL_CRIT,&card->wandev.critical)){
- return;
- }
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- return;
- }
- schedule_work(&chdlc_priv_area->poll_work);
-}
-
-
-static void chdlc_poll_delay (unsigned long dev_ptr)
-{
- struct net_device *dev = (struct net_device *)dev_ptr;
- trigger_chdlc_poll(dev);
-}
-
-
-void s508_lock (sdla_t *card, unsigned long *smp_flags)
-{
- spin_lock_irqsave(&card->wandev.lock, *smp_flags);
- if (card->next){
- spin_lock(&card->next->wandev.lock);
- }
-}
-
-void s508_unlock (sdla_t *card, unsigned long *smp_flags)
-{
- if (card->next){
- spin_unlock(&card->next->wandev.lock);
- }
- spin_unlock_irqrestore(&card->wandev.lock, *smp_flags);
-}
-
-//*********** TTY SECTION ****************
-
-static void wanpipe_tty_trigger_tx_irq(sdla_t *card)
-{
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- INTERRUPT_INFORMATION_STRUCT *chdlc_int = &flags->interrupt_info_struct;
- chdlc_int->interrupt_permission |= APP_INT_ON_TX_FRAME;
-}
-
-static void wanpipe_tty_trigger_poll(sdla_t *card)
-{
- schedule_work(&card->tty_work);
-}
-
-static void tty_poll_work (void* data)
-{
- sdla_t *card = (sdla_t*)data;
- struct tty_struct *tty;
-
- if ((tty=card->tty)==NULL)
- return;
-
- tty_wakeup(tty);
-#if defined(SERIAL_HAVE_POLL_WAIT)
- wake_up_interruptible(&tty->poll_wait);
-#endif
- return;
-}
-
-static void wanpipe_tty_close(struct tty_struct *tty, struct file * filp)
-{
- sdla_t *card;
- unsigned long smp_flags;
-
- if (!tty || !tty->driver_data){
- return;
- }
-
- card = (sdla_t*)tty->driver_data;
-
- if (!card)
- return;
-
- printk(KERN_INFO "%s: Closing TTY Driver!\n",
- card->devname);
-
- /* Sanity Check */
- if (!card->tty_open)
- return;
-
- wanpipe_close(card);
- if (--card->tty_open == 0){
-
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- card->tty=NULL;
- chdlc_disable_comm_shutdown(card);
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
-
- kfree(card->tty_buf);
- card->tty_buf = NULL;
- kfree(card->tty_rx);
- card->tty_rx = NULL;
- }
- return;
-}
-static int wanpipe_tty_open(struct tty_struct *tty, struct file * filp)
-{
- unsigned long smp_flags;
- sdla_t *card;
-
- if (!tty){
- return -ENODEV;
- }
-
- if (!tty->driver_data){
- int port;
- port = tty->index;
- if ((port < 0) || (port >= NR_PORTS))
- return -ENODEV;
-
- tty->driver_data = WAN_CARD(port);
- if (!tty->driver_data)
- return -ENODEV;
- }
-
- card = (sdla_t*)tty->driver_data;
-
- if (!card){
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- card->tty=NULL;
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
- return -ENODEV;
- }
-
- printk(KERN_INFO "%s: Opening TTY Driver!\n",
- card->devname);
-
- if (card->tty_open == 0){
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- card->tty=tty;
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
-
- if (!card->tty_buf){
- card->tty_buf = kmalloc(TTY_CHDLC_MAX_MTU, GFP_KERNEL);
- if (!card->tty_buf){
- card->tty_buf=NULL;
- card->tty=NULL;
- return -ENOMEM;
- }
- }
-
- if (!card->tty_rx){
- card->tty_rx = kmalloc(TTY_CHDLC_MAX_MTU, GFP_KERNEL);
- if (!card->tty_rx){
- /* Free the buffer above */
- kfree(card->tty_buf);
- card->tty_buf=NULL;
- card->tty=NULL;
- return -ENOMEM;
- }
- }
- }
-
- ++card->tty_open;
- wanpipe_open(card);
- return 0;
-}
-
-static int wanpipe_tty_write(struct tty_struct * tty, const unsigned char *buf, int count)
-{
- unsigned long smp_flags=0;
- sdla_t *card=NULL;
-
- if (!tty){
- dbg_printk(KERN_INFO "NO TTY in Write\n");
- return -ENODEV;
- }
-
- card = (sdla_t *)tty->driver_data;
-
- if (!card){
- dbg_printk(KERN_INFO "No Card in TTY Write\n");
- return -ENODEV;
- }
-
- if (count > card->wandev.mtu){
- dbg_printk(KERN_INFO "Frame too big in Write %i Max: %i\n",
- count,card->wandev.mtu);
- return -EINVAL;
- }
-
- if (card->wandev.state != WAN_CONNECTED){
- dbg_printk(KERN_INFO "Card not connected in TTY Write\n");
- return -EINVAL;
- }
-
- /* Lock the 508 Card: SMP is supported */
- if(card->hw.type != SDLA_S514){
- s508_lock(card,&smp_flags);
- }
-
- if (test_and_set_bit(SEND_CRIT,(void*)&card->wandev.critical)){
- printk(KERN_INFO "%s: Critical in TTY Write\n",
- card->devname);
-
- /* Lock the 508 Card: SMP is supported */
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
-
- return -EINVAL;
- }
-
- if (chdlc_send(card,(void*)buf,count)){
- dbg_printk(KERN_INFO "%s: Failed to send, retry later: kernel!\n",
- card->devname);
- clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
-
- wanpipe_tty_trigger_tx_irq(card);
-
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
- return 0;
- }
- dbg_printk(KERN_INFO "%s: Packet sent OK: %i\n",card->devname,count);
- clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
-
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
-
- return count;
-}
-
-static void wanpipe_tty_receive(sdla_t *card, unsigned addr, unsigned int len)
-{
- unsigned offset=0;
- unsigned olen=len;
- char fp=0;
- struct tty_struct *tty;
- int i;
- struct tty_ldisc *ld;
-
- if (!card->tty_open){
- dbg_printk(KERN_INFO "%s: TTY not open during receive\n",
- card->devname);
- return;
- }
-
- if ((tty=card->tty) == NULL){
- dbg_printk(KERN_INFO "%s: No TTY on receive\n",
- card->devname);
- return;
- }
-
- if (!tty->driver_data){
- dbg_printk(KERN_INFO "%s: No Driver Data, or Flip on receive\n",
- card->devname);
- return;
- }
-
-
- if (card->u.c.async_mode){
- if ((tty->flip.count+len) >= TTY_FLIPBUF_SIZE){
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Received packet size too big: %i bytes, Max: %i!\n",
- card->devname,len,TTY_FLIPBUF_SIZE);
- }
- return;
- }
-
-
- if((addr + len) > card->u.c.rx_top + 1) {
- offset = card->u.c.rx_top - addr + 1;
-
- sdla_peek(&card->hw, addr, tty->flip.char_buf_ptr, offset);
-
- addr = card->u.c.rx_base;
- len -= offset;
-
- tty->flip.char_buf_ptr+=offset;
- tty->flip.count+=offset;
- for (i=0;i<offset;i++){
- *tty->flip.flag_buf_ptr = 0;
- tty->flip.flag_buf_ptr++;
- }
- }
-
- sdla_peek(&card->hw, addr, tty->flip.char_buf_ptr, len);
-
- tty->flip.char_buf_ptr+=len;
- card->tty->flip.count+=len;
- for (i=0;i<len;i++){
- *tty->flip.flag_buf_ptr = 0;
- tty->flip.flag_buf_ptr++;
- }
-
- tty->low_latency=1;
- tty_flip_buffer_push(tty);
- }else{
- if (!card->tty_rx){
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Receive sync buffer not available!\n",
- card->devname);
- }
- return;
- }
-
- if (len > TTY_CHDLC_MAX_MTU){
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Received packet size too big: %i bytes, Max: %i!\n",
- card->devname,len,TTY_FLIPBUF_SIZE);
- }
- return;
- }
-
-
- if((addr + len) > card->u.c.rx_top + 1) {
- offset = card->u.c.rx_top - addr + 1;
-
- sdla_peek(&card->hw, addr, card->tty_rx, offset);
-
- addr = card->u.c.rx_base;
- len -= offset;
- }
- sdla_peek(&card->hw, addr, card->tty_rx+offset, len);
- ld = tty_ldisc_ref(tty);
- if (ld) {
- if (ld->receive_buf)
- ld->receive_buf(tty,card->tty_rx,&fp,olen);
- tty_ldisc_deref(ld);
- }else{
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: NO TTY Sync line discipline!\n",
- card->devname);
- }
- }
- }
-
- dbg_printk(KERN_INFO "%s: Received Data %i\n",card->devname,olen);
- return;
-}
-
-#if 0
-static int wanpipe_tty_ioctl(struct tty_struct *tty, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- return -ENOIOCTLCMD;
-}
-#endif
-
-static void wanpipe_tty_stop(struct tty_struct *tty)
-{
- return;
-}
-
-static void wanpipe_tty_start(struct tty_struct *tty)
-{
- return;
-}
-
-static int config_tty (sdla_t *card)
-{
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
- /* Setup the Board for asynchronous mode */
- if (card->u.c.async_mode){
-
- if (set_asy_config(card)) {
- printk (KERN_INFO "%s: Failed CHDLC Async configuration!\n",
- card->devname);
- return -EINVAL;
- }
- }else{
- /* Setup the Board for CHDLC */
- if (set_chdlc_config(card)) {
- printk (KERN_INFO "%s: Failed CHDLC configuration!\n",
- card->devname);
- return -EINVAL;
- }
- }
-
- /* Set interrupt mode and mask */
- if (chdlc_set_intr_mode(card, APP_INT_ON_RX_FRAME |
- APP_INT_ON_GLOBAL_EXCEP_COND |
- APP_INT_ON_TX_FRAME |
- APP_INT_ON_CHDLC_EXCEP_COND | APP_INT_ON_TIMER)){
- printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
- card->devname);
- return -EINVAL;
- }
-
-
- /* Mask the Transmit and Timer interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~(APP_INT_ON_TX_FRAME | APP_INT_ON_TIMER);
-
-
- /* Enable communications */
- if (card->u.c.async_mode){
- if (asy_comm_enable(card) != 0) {
- printk(KERN_INFO "%s: Failed to enable async commnunication!\n",
- card->devname);
- flags->interrupt_info_struct.interrupt_permission = 0;
- card->u.c.comm_enabled=0;
- chdlc_set_intr_mode(card,0);
- return -EINVAL;
- }
- }else{
- if (chdlc_comm_enable(card) != 0) {
- printk(KERN_INFO "%s: Failed to enable chdlc communications!\n",
- card->devname);
- flags->interrupt_info_struct.interrupt_permission = 0;
- card->u.c.comm_enabled=0;
- chdlc_set_intr_mode(card,0);
- return -EINVAL;
- }
- }
-
- /* Initialize Rx/Tx buffer control fields */
- init_chdlc_tx_rx_buff(card);
- port_set_state(card, WAN_CONNECTING);
- return 0;
-}
-
-
-static int change_speed(sdla_t *card, struct tty_struct *tty,
- struct termios *old_termios)
-{
- int baud, ret=0;
- unsigned cflag;
- int dbits,sbits,parity,handshaking;
-
- cflag = tty->termios->c_cflag;
-
- /* There is always one stop bit */
- sbits=WANOPT_ONE;
-
- /* Parity is defaulted to NONE */
- parity = WANOPT_NONE;
-
- handshaking=0;
-
- /* byte size and parity */
- switch (cflag & CSIZE) {
- case CS5: dbits = 5; break;
- case CS6: dbits = 6; break;
- case CS7: dbits = 7; break;
- case CS8: dbits = 8; break;
- /* Never happens, but GCC is too dumb to figure it out */
- default: dbits = 8; break;
- }
-
- /* One more stop bit should be supported, thus increment
- * the number of stop bits Max=2 */
- if (cflag & CSTOPB) {
- sbits = WANOPT_TWO;
- }
- if (cflag & PARENB) {
- parity = WANOPT_EVEN;
- }
- if (cflag & PARODD){
- parity = WANOPT_ODD;
- }
-
- /* Determine divisor based on baud rate */
- baud = tty_get_baud_rate(tty);
-
- if (!baud)
- baud = 9600; /* B0 transition handled in rs_set_termios */
-
- if (cflag & CRTSCTS) {
- handshaking|=ASY_RTS_HS_FOR_RX;
- }
-
- if (I_IGNPAR(tty))
- parity = WANOPT_NONE;
-
- if (I_IXOFF(tty)){
- handshaking|=ASY_XON_XOFF_HS_FOR_RX;
- handshaking|=ASY_XON_XOFF_HS_FOR_TX;
- }
-
- if (I_IXON(tty)){
- handshaking|=ASY_XON_XOFF_HS_FOR_RX;
- handshaking|=ASY_XON_XOFF_HS_FOR_TX;
- }
-
- if (card->u.c.async_mode){
- if (card->wandev.bps != baud)
- ret=1;
- card->wandev.bps = baud;
- }
-
- if (card->u.c.async_mode){
- if (card->u.c.protocol_options != handshaking)
- ret=1;
- card->u.c.protocol_options = handshaking;
-
- if (card->u.c.tx_bits_per_char != dbits)
- ret=1;
- card->u.c.tx_bits_per_char = dbits;
-
- if (card->u.c.rx_bits_per_char != dbits)
- ret=1;
- card->u.c.rx_bits_per_char = dbits;
-
- if (card->u.c.stop_bits != sbits)
- ret=1;
- card->u.c.stop_bits = sbits;
-
- if (card->u.c.parity != parity)
- ret=1;
- card->u.c.parity = parity;
-
- card->u.c.break_timer = 50;
- card->u.c.inter_char_timer = 10;
- card->u.c.rx_complete_length = 100;
- card->u.c.xon_char = 0xFE;
- }else{
- card->u.c.protocol_options = HDLC_STREAMING_MODE;
- }
-
- return ret;
-}
-
-
-static void wanpipe_tty_set_termios(struct tty_struct *tty, struct termios *old_termios)
-{
- sdla_t *card;
- int err=1;
-
- if (!tty){
- return;
- }
-
- card = (sdla_t *)tty->driver_data;
-
- if (!card)
- return;
-
- if (change_speed(card, tty, old_termios) || !card->u.c.comm_enabled){
- unsigned long smp_flags;
-
- if (card->u.c.comm_enabled){
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- chdlc_disable_comm_shutdown(card);
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
- }
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- err = config_tty(card);
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
- if (card->u.c.async_mode){
- printk(KERN_INFO "%s: TTY Async Configuration:\n"
- " Baud =%i\n"
- " Handshaking =%s\n"
- " Tx Dbits =%i\n"
- " Rx Dbits =%i\n"
- " Parity =%s\n"
- " Stop Bits =%i\n",
- card->devname,
- card->wandev.bps,
- opt_decode[card->u.c.protocol_options],
- card->u.c.tx_bits_per_char,
- card->u.c.rx_bits_per_char,
- p_decode[card->u.c.parity] ,
- card->u.c.stop_bits);
- }else{
- printk(KERN_INFO "%s: TTY Sync Configuration:\n"
- " Baud =%i\n"
- " Protocol =HDLC_STREAMING\n",
- card->devname,card->wandev.bps);
- }
- if (!err){
- port_set_state(card,WAN_CONNECTED);
- }else{
- port_set_state(card,WAN_DISCONNECTED);
- }
- }
- return;
-}
-
-static void wanpipe_tty_put_char(struct tty_struct *tty, unsigned char ch)
-{
- sdla_t *card;
- unsigned long smp_flags=0;
-
- if (!tty){
- return;
- }
-
- card = (sdla_t *)tty->driver_data;
-
- if (!card)
- return;
-
- if (card->wandev.state != WAN_CONNECTED)
- return;
-
- if(card->hw.type != SDLA_S514)
- s508_lock(card,&smp_flags);
-
- if (test_and_set_bit(SEND_CRIT,(void*)&card->wandev.critical)){
-
- wanpipe_tty_trigger_tx_irq(card);
-
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
- return;
- }
-
- if (chdlc_send(card,(void*)&ch,1)){
- wanpipe_tty_trigger_tx_irq(card);
- dbg_printk("%s: Failed to TX char!\n",card->devname);
- }
-
- dbg_printk("%s: Char TX OK\n",card->devname);
-
- clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
-
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
-
- return;
-}
-
-static void wanpipe_tty_flush_chars(struct tty_struct *tty)
-{
- return;
-}
-
-static void wanpipe_tty_flush_buffer(struct tty_struct *tty)
-{
- if (!tty)
- return;
-
-#if defined(SERIAL_HAVE_POLL_WAIT)
- wake_up_interruptible(&tty->poll_wait);
-#endif
- tty_wakeup(tty);
- return;
-}
-
-/*
- * This function is used to send a high-priority XON/XOFF character to
- * the device
- */
-static void wanpipe_tty_send_xchar(struct tty_struct *tty, char ch)
-{
- return;
-}
-
-
-static int wanpipe_tty_chars_in_buffer(struct tty_struct *tty)
-{
- return 0;
-}
-
-
-static int wanpipe_tty_write_room(struct tty_struct *tty)
-{
- sdla_t *card;
-
- printk(KERN_INFO "TTY Write Room\n");
-
- if (!tty){
- return 0;
- }
-
- card = (sdla_t *)tty->driver_data;
- if (!card)
- return 0;
-
- if (card->wandev.state != WAN_CONNECTED)
- return 0;
-
- return SEC_MAX_NO_DATA_BYTES_IN_FRAME;
-}
-
-
-static int set_modem_status(sdla_t *card, unsigned char data)
-{
- CHDLC_MAILBOX_STRUCT *mb = card->mbox;
- int err;
-
- mb->buffer_length=1;
- mb->command=SET_MODEM_STATUS;
- mb->data[0]=data;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error (card, err, mb);
-
- return err;
-}
-
-static void wanpipe_tty_hangup(struct tty_struct *tty)
-{
- sdla_t *card;
- unsigned long smp_flags;
-
- printk(KERN_INFO "TTY Hangup!\n");
-
- if (!tty){
- return;
- }
-
- card = (sdla_t *)tty->driver_data;
- if (!card)
- return;
-
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- set_modem_status(card,0);
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
- return;
-}
-
-static void wanpipe_tty_break(struct tty_struct *tty, int break_state)
-{
- return;
-}
-
-static void wanpipe_tty_wait_until_sent(struct tty_struct *tty, int timeout)
-{
- return;
-}
-
-static void wanpipe_tty_throttle(struct tty_struct * tty)
-{
- return;
-}
-
-static void wanpipe_tty_unthrottle(struct tty_struct * tty)
-{
- return;
-}
-
-int wanpipe_tty_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- return 0;
-}
-
-/*
- * The serial driver boot-time initialization code!
- */
-int wanpipe_tty_init(sdla_t *card)
-{
- struct serial_state * state;
-
- /* Initialize the tty_driver structure */
-
- if (card->tty_minor < 0 || card->tty_minor > NR_PORTS){
- printk(KERN_INFO "%s: Illegal Minor TTY number (0-4): %i\n",
- card->devname,card->tty_minor);
- return -EINVAL;
- }
-
- if (WAN_CARD(card->tty_minor)){
- printk(KERN_INFO "%s: TTY Minor %i, already in use\n",
- card->devname,card->tty_minor);
- return -EBUSY;
- }
-
- if (tty_init_cnt==0){
-
- printk(KERN_INFO "%s: TTY %s Driver Init: Major %i, Minor Range %i-%i\n",
- card->devname,
- card->u.c.async_mode ? "ASYNC" : "SYNC",
- WAN_TTY_MAJOR,MIN_PORT,MAX_PORT);
-
- tty_driver_mode = card->u.c.async_mode;
-
- memset(&serial_driver, 0, sizeof(struct tty_driver));
- serial_driver.magic = TTY_DRIVER_MAGIC;
- serial_driver.owner = THIS_MODULE;
- serial_driver.driver_name = "wanpipe_tty";
- serial_driver.name = "ttyW";
- serial_driver.major = WAN_TTY_MAJOR;
- serial_driver.minor_start = WAN_TTY_MINOR;
- serial_driver.num = NR_PORTS;
- serial_driver.type = TTY_DRIVER_TYPE_SERIAL;
- serial_driver.subtype = SERIAL_TYPE_NORMAL;
-
- serial_driver.init_termios = tty_std_termios;
- serial_driver.init_termios.c_cflag =
- B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- serial_driver.flags = TTY_DRIVER_REAL_RAW;
-
- serial_driver.refcount = 1; /* !@!@^#^&!! */
-
- serial_driver.open = wanpipe_tty_open;
- serial_driver.close = wanpipe_tty_close;
- serial_driver.write = wanpipe_tty_write;
-
- serial_driver.put_char = wanpipe_tty_put_char;
- serial_driver.flush_chars = wanpipe_tty_flush_chars;
- serial_driver.write_room = wanpipe_tty_write_room;
- serial_driver.chars_in_buffer = wanpipe_tty_chars_in_buffer;
- serial_driver.flush_buffer = wanpipe_tty_flush_buffer;
- //serial_driver.ioctl = wanpipe_tty_ioctl;
- serial_driver.throttle = wanpipe_tty_throttle;
- serial_driver.unthrottle = wanpipe_tty_unthrottle;
- serial_driver.send_xchar = wanpipe_tty_send_xchar;
- serial_driver.set_termios = wanpipe_tty_set_termios;
- serial_driver.stop = wanpipe_tty_stop;
- serial_driver.start = wanpipe_tty_start;
- serial_driver.hangup = wanpipe_tty_hangup;
- serial_driver.break_ctl = wanpipe_tty_break;
- serial_driver.wait_until_sent = wanpipe_tty_wait_until_sent;
- serial_driver.read_proc = wanpipe_tty_read_proc;
-
- if (tty_register_driver(&serial_driver)){
- printk(KERN_INFO "%s: Failed to register serial driver!\n",
- card->devname);
- }
- }
-
-
- /* The subsequent ports must comply to the initial configuration */
- if (tty_driver_mode != card->u.c.async_mode){
- printk(KERN_INFO "%s: Error: TTY Driver operation mode mismatch!\n",
- card->devname);
- printk(KERN_INFO "%s: The TTY driver is configured for %s!\n",
- card->devname, tty_driver_mode ? "ASYNC" : "SYNC");
- return -EINVAL;
- }
-
- tty_init_cnt++;
-
- printk(KERN_INFO "%s: Initializing TTY %s Driver Minor %i\n",
- card->devname,
- tty_driver_mode ? "ASYNC" : "SYNC",
- card->tty_minor);
-
- tty_card_map[card->tty_minor] = card;
- state = &rs_table[card->tty_minor];
-
- state->magic = SSTATE_MAGIC;
- state->line = 0;
- state->type = PORT_UNKNOWN;
- state->custom_divisor = 0;
- state->close_delay = 5*HZ/10;
- state->closing_wait = 30*HZ;
- state->icount.cts = state->icount.dsr =
- state->icount.rng = state->icount.dcd = 0;
- state->icount.rx = state->icount.tx = 0;
- state->icount.frame = state->icount.parity = 0;
- state->icount.overrun = state->icount.brk = 0;
- state->irq = card->wandev.irq;
-
- INIT_WORK(&card->tty_work, tty_poll_work, (void*)card);
- return 0;
-}
-
-
-MODULE_LICENSE("GPL");
-
-/****** End ****************************************************************/