aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wan/sdla_fr.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wan/sdla_fr.c')
-rw-r--r--drivers/net/wan/sdla_fr.c5061
1 files changed, 0 insertions, 5061 deletions
diff --git a/drivers/net/wan/sdla_fr.c b/drivers/net/wan/sdla_fr.c
deleted file mode 100644
index 7f1ce9d4333..00000000000
--- a/drivers/net/wan/sdla_fr.c
+++ /dev/null
@@ -1,5061 +0,0 @@
-/*****************************************************************************
-* sdla_fr.c WANPIPE(tm) Multiprotocol WAN Link Driver. Frame relay module.
-*
-* Author(s): 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.
-* ============================================================================
-* Nov 23, 2000 Nenad Corbic o Added support for 2.4.X kernels
-* Nov 15, 2000 David Rokavarg
-* Nenad Corbic o Added frame relay bridging support.
-* Original code from Mark Wells and Kristian Hoffmann has
-* been integrated into the frame relay driver.
-* Nov 13, 2000 Nenad Corbic o Added true interface type encoding option.
-* Tcpdump doesn't support Frame Relay inteface
-* types, to fix this true type option will set
-* the interface type to RAW IP mode.
-* Nov 07, 2000 Nenad Corbic o Added security features for UDP debugging:
-* Deny all and specify allowed requests.
-* Nov 06, 2000 Nenad Corbic o Wanpipe interfaces conform to raw packet interfaces.
-* Moved the if_header into the if_send() routine.
-* The if_header() was breaking the libpcap
-* support. i.e. support for tcpdump, ethereal ...
-* Oct 12. 2000 Nenad Corbic o Added error message in fr_configure
-* Jul 31, 2000 Nenad Corbic o Fixed the Router UP Time.
-* Apr 28, 2000 Nenad Corbic o Added the option to shutdown an interface
-* when the channel gets disconnected.
-* Apr 28, 2000 Nenad Corbic o Added M.Grants patch: disallow duplicate
-* interface setups.
-* Apr 25, 2000 Nenad Corbic o Added M.Grants patch: dynamically add/remove
-* new dlcis/interfaces.
-* Mar 23, 2000 Nenad Corbic o Improved task queue, bh handling.
-* Mar 16, 2000 Nenad Corbic o Added Inverse ARP support
-* Mar 13, 2000 Nenad Corbic o Added new socket API support.
-* Mar 06, 2000 Nenad Corbic o Bug Fix: corrupted mbox recovery.
-* Feb 24, 2000 Nenad Corbic o Fixed up FT1 UDP debugging problem.
-* Dev 15, 1999 Nenad Corbic o Fixed up header files for 2.0.X kernels
-*
-* Nov 08, 1999 Nenad Corbic o Combined all debug UDP calls into one function
-* o Removed the ARP support. This has to be done
-* in the next version.
-* o Only a Node can implement NO signalling.
-* Initialize DLCI during if_open() if NO
-* signalling.
-* o Took out IPX support, implement in next
-* version
-* Sep 29, 1999 Nenad Corbic o Added SMP support and changed the update
-* function to use timer interrupt.
-* o Fixed the CIR bug: Set the value of BC
-* to CIR when the CIR is enabled.
-* o Updated comments, statistics and tracing.
-* Jun 02, 1999 Gideon Hack o Updated for S514 support.
-* Sep 18, 1998 Jaspreet Singh o Updated for 2.2.X kernels.
-* Jul 31, 1998 Jaspreet Singh o Removed wpf_poll routine. The channel/DLCI
-* status is received through an event interrupt.
-* Jul 08, 1998 David Fong o Added inverse ARP support.
-* Mar 26, 1997 Jaspreet Singh o Returning return codes for failed UDP cmds.
-* Jan 28, 1997 Jaspreet Singh o Improved handling of inactive DLCIs.
-* Dec 30, 1997 Jaspreet Singh o Replaced dev_tint() with mark_bh(NET_BH)
-* Dec 16, 1997 Jaspreet Singh o Implemented Multiple IPX support.
-* Nov 26, 1997 Jaspreet Singh o Improved load sharing with multiple boards
-* o Added Cli() to protect enabling of interrupts
-* while polling is called.
-* Nov 24, 1997 Jaspreet Singh o Added counters to avoid enabling of interrupts
-* when they have been disabled by another
-* interface or routine (eg. wpf_poll).
-* Nov 06, 1997 Jaspreet Singh o Added INTR_TEST_MODE to avoid polling
-* routine disable interrupts during interrupt
-* testing.
-* Oct 20, 1997 Jaspreet Singh o Added hooks in for Router UP time.
-* Oct 16, 1997 Jaspreet Singh o The critical flag is used to maintain flow
-* control by avoiding RACE conditions. The
-* cli() and restore_flags() are taken out.
-* The fr_channel structure is appended for
-* Driver Statistics.
-* Oct 15, 1997 Farhan Thawar o updated if_send() and receive for IPX
-* Aug 29, 1997 Farhan Thawar o Removed most of the cli() and sti()
-* o Abstracted the UDP management stuff
-* o Now use tbusy and critical more intelligently
-* Jul 21, 1997 Jaspreet Singh o Can configure T391, T392, N391, N392 & N393
-* through router.conf.
-* o Protected calls to sdla_peek() by adDing
-* save_flags(), cli() and restore_flags().
-* o Added error message for Inactive DLCIs in
-* fr_event() and update_chan_state().
-* o Fixed freeing up of buffers using kfree()
-* when packets are received.
-* Jul 07, 1997 Jaspreet Singh o Added configurable TTL for UDP packets
-* o Added ability to discard multicast and
-* broadcast source addressed packets
-* Jun 27, 1997 Jaspreet Singh o Added FT1 monitor capabilities
-* New case (0x44) statement in if_send routine
-* Added a global variable rCount to keep track
-* of FT1 status enabled on the board.
-* May 29, 1997 Jaspreet Singh o Fixed major Flow Control Problem
-* With multiple boards a problem was seen where
-* the second board always stopped transmitting
-* packet after running for a while. The code
-* got into a stage where the interrupts were
-* disabled and dev->tbusy was set to 1.
-* This caused the If_send() routine to get into
-* the if clause for it(0,dev->tbusy)
-* forever.
-* The code got into this stage due to an
-* interrupt occurring within the if clause for
-* set_bit(0,dev->tbusy). Since an interrupt
-* disables furhter transmit interrupt and
-* makes dev->tbusy = 0, this effect was undone
-* by making dev->tbusy = 1 in the if clause.
-* The Fix checks to see if Transmit interrupts
-* are disabled then do not make dev->tbusy = 1
-* Introduced a global variable: int_occur and
-* added tx_int_enabled in the wan_device
-* structure.
-* May 21, 1997 Jaspreet Singh o Fixed UDP Management for multiple
-* boards.
-*
-* Apr 25, 1997 Farhan Thawar o added UDP Management stuff
-* o fixed bug in if_send() and tx_intr() to
-* sleep and wakeup all devices
-* Mar 11, 1997 Farhan Thawar Version 3.1.1
-* o fixed (+1) bug in fr508_rx_intr()
-* o changed if_send() to return 0 if
-* wandev.critical() is true
-* o free socket buffer in if_send() if
-* returning 0
-* o added tx_intr() routine
-* Jan 30, 1997 Gene Kozin Version 3.1.0
-* o implemented exec() entry point
-* o fixed a bug causing driver configured as
-* a FR switch to be stuck in WAN_
-* mode
-* Jan 02, 1997 Gene Kozin 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/workqueue.h>
-#include <linux/if_arp.h> /* ARPHRD_* defines */
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <asm/io.h> /* for inb(), outb(), etc. */
-#include <linux/time.h> /* for do_gettimeofday */
-#include <linux/in.h> /* sockaddr_in */
-#include <linux/jiffies.h> /* time_after() macro */
-#include <asm/errno.h>
-
-#include <linux/ip.h>
-#include <linux/if.h>
-
-#include <linux/if_wanpipe_common.h> /* Wanpipe Socket */
-#include <linux/if_wanpipe.h>
-
-#include <linux/sdla_fr.h> /* frame relay firmware API definitions */
-
-#include <asm/uaccess.h>
-#include <linux/inetdevice.h>
-#include <linux/netdevice.h>
-
-#include <net/route.h> /* Dynamic Route Creation */
-#include <linux/etherdevice.h> /* eth_type_trans() used for bridging */
-#include <linux/random.h>
-
-/****** Defines & Macros ****************************************************/
-
-#define MAX_CMD_RETRY 10 /* max number of firmware retries */
-
-#define FR_HEADER_LEN 8 /* max encapsulation header size */
-#define FR_CHANNEL_MTU 1500 /* unfragmented logical channel MTU */
-
-/* Q.922 frame types */
-#define Q922_UI 0x03 /* Unnumbered Info frame */
-#define Q922_XID 0xAF
-
-/* DLCI configured or not */
-#define DLCI_NOT_CONFIGURED 0x00
-#define DLCI_CONFIG_PENDING 0x01
-#define DLCI_CONFIGURED 0x02
-
-/* CIR enabled or not */
-#define CIR_ENABLED 0x00
-#define CIR_DISABLED 0x01
-
-#define FRAME_RELAY_API 1
-#define MAX_BH_BUFF 10
-
-/* For handle_IPXWAN() */
-#define CVHexToAscii(b) (((unsigned char)(b) > (unsigned char)9) ? ((unsigned char)'A' + ((unsigned char)(b) - (unsigned char)10)) : ((unsigned char)'0' + (unsigned char)(b)))
-
-/****** Data Structures *****************************************************/
-
-/* This is an extention of the 'struct device' we create for each network
- * interface to keep the rest of channel-specific data.
- */
-typedef struct fr_channel
-{
- wanpipe_common_t common;
- char name[WAN_IFNAME_SZ+1]; /* interface name, ASCIIZ */
- unsigned dlci_configured ; /* check whether configured or not */
- unsigned cir_status; /* check whether CIR enabled or not */
- unsigned dlci; /* logical channel number */
- unsigned cir; /* committed information rate */
- unsigned bc; /* committed burst size */
- unsigned be; /* excess burst size */
- unsigned mc; /* multicast support on or off */
- unsigned tx_int_status; /* Transmit Interrupt Status */
- unsigned short pkt_length; /* Packet Length */
- unsigned long router_start_time;/* Router start time in seconds */
- unsigned long tick_counter; /* counter for transmit time out */
- char dev_pending_devtint; /* interface pending dev_tint() */
- void *dlci_int_interface; /* pointer to the DLCI Interface */
- unsigned long IB_addr; /* physical address of Interface Byte */
- unsigned long state_tick; /* time of the last state change */
- unsigned char enable_IPX; /* Enable/Disable the use of IPX */
- unsigned long network_number; /* Internal Network Number for IPX*/
- sdla_t *card; /* -> owner */
- unsigned route_flag; /* Add/Rem dest addr in route tables */
- unsigned inarp; /* Inverse Arp Request status */
- long inarp_ready; /* Ready to send requests */
- int inarp_interval; /* Time between InArp Requests */
- unsigned long inarp_tick; /* InArp jiffies tick counter */
- long interface_down; /* Bring interface down on disconnect */
- struct net_device_stats ifstats; /* interface statistics */
- if_send_stat_t drvstats_if_send;
- rx_intr_stat_t drvstats_rx_intr;
- pipe_mgmt_stat_t drvstats_gen;
- unsigned long router_up_time;
-
- unsigned short transmit_length;
- struct sk_buff *delay_skb;
-
- 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;
-
- /* Polling task queue. Each interface
- * has its own task queue, which is used
- * to defer events from the interrupt */
- struct work_struct fr_poll_work;
- struct timer_list fr_arp_timer;
-
- u32 ip_local;
- u32 ip_remote;
- long config_dlci;
- long unconfig_dlci;
-
- /* Whether this interface should be setup as a gateway.
- * Used by dynamic route setup code */
- u8 gateway;
-
- /* True interface type */
- u8 true_if_encoding;
- u8 fr_header[FR_HEADER_LEN];
- char fr_header_len;
-
-} fr_channel_t;
-
-/* Route Flag options */
-#define NO_ROUTE 0x00
-#define ADD_ROUTE 0x01
-#define ROUTE_ADDED 0x02
-#define REMOVE_ROUTE 0x03
-#define ARP_REQ 0x04
-
-/* inarp options */
-#define INARP_NONE 0x00
-#define INARP_REQUEST 0x01
-#define INARP_CONFIGURED 0x02
-
-/* 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_ARP 0x04
-#define TMR_INT_ENABLED_UPDATE_STATE 0x08
-#define TMR_INT_ENABLED_CONFIG 0x10
-#define TMR_INT_ENABLED_UNCONFIG 0x20
-
-
-typedef struct dlci_status
-{
- unsigned short dlci PACKED;
- unsigned char state PACKED;
-} dlci_status_t;
-
-typedef struct dlci_IB_mapping
-{
- unsigned short dlci PACKED;
- unsigned long addr_value PACKED;
-} dlci_IB_mapping_t;
-
-/* This structure is used for DLCI list Tx interrupt mode. It is used to
- enable interrupt bit and set the packet length for transmission
- */
-typedef struct fr_dlci_interface
-{
- unsigned char gen_interrupt PACKED;
- unsigned short packet_length PACKED;
- unsigned char reserved PACKED;
-} fr_dlci_interface_t;
-
-/* variable for keeping track of enabling/disabling FT1 monitor status */
-static int rCount = 0;
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/* variable for keeping track of number of interrupts generated during
- * interrupt test routine
- */
-static int Intr_test_counter;
-
-/****** 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);
-static int del_if(struct wan_device *wandev, struct net_device *dev);
-static void disable_comm (sdla_t *card);
-
-/* WANPIPE-specific entry points */
-static int wpf_exec(struct sdla *card, void *u_cmd, void *u_data);
-
-/* 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 void if_tx_timeout(struct net_device *dev);
-
-static int if_rebuild_hdr (struct sk_buff *skb);
-
-static int if_send(struct sk_buff *skb, struct net_device *dev);
-static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev,
- struct sk_buff *skb);
-static struct net_device_stats *if_stats(struct net_device *dev);
-
-/* Interrupt handlers */
-static void fr_isr(sdla_t *card);
-static void rx_intr(sdla_t *card);
-static void tx_intr(sdla_t *card);
-static void timer_intr(sdla_t *card);
-static void spur_intr(sdla_t *card);
-
-/* Frame relay firmware interface functions */
-static int fr_read_version(sdla_t *card, char *str);
-static int fr_configure(sdla_t *card, fr_conf_t *conf);
-static int fr_dlci_configure(sdla_t *card, fr_dlc_conf_t *conf, unsigned dlci);
-static int fr_init_dlci (sdla_t *card, fr_channel_t *chan);
-static int fr_set_intr_mode (sdla_t *card, unsigned mode, unsigned mtu, unsigned short timeout);
-static int fr_comm_enable(sdla_t *card);
-static void fr_comm_disable(sdla_t *card);
-static int fr_get_err_stats(sdla_t *card);
-static int fr_get_stats(sdla_t *card);
-static int fr_add_dlci(sdla_t *card, int dlci);
-static int fr_activate_dlci(sdla_t *card, int dlci);
-static int fr_delete_dlci (sdla_t* card, int dlci);
-static int fr_issue_isf(sdla_t *card, int isf);
-static int fr_send(sdla_t *card, int dlci, unsigned char attr, int len,
- void *buf);
-static int fr_send_data_header(sdla_t *card, int dlci, unsigned char attr, int len,
- void *buf,unsigned char hdr_len);
-static unsigned int fr_send_hdr(sdla_t *card, int dlci, unsigned int offset);
-
-static int check_dlci_config (sdla_t *card, fr_channel_t *chan);
-static void initialize_rx_tx_buffers (sdla_t *card);
-
-
-/* Firmware asynchronous event handlers */
-static int fr_event(sdla_t *card, int event, fr_mbox_t *mbox);
-static int fr_modem_failure(sdla_t *card, fr_mbox_t *mbox);
-static int fr_dlci_change(sdla_t *card, fr_mbox_t *mbox);
-
-/* Miscellaneous functions */
-static int update_chan_state(struct net_device *dev);
-static void set_chan_state(struct net_device *dev, int state);
-static struct net_device *find_channel(sdla_t *card, unsigned dlci);
-static int is_tx_ready(sdla_t *card, fr_channel_t *chan);
-static unsigned int dec_to_uint(unsigned char *str, int len);
-static int reply_udp( unsigned char *data, unsigned int mbox_len );
-
-static int intr_test( sdla_t* card );
-static void init_chan_statistics( fr_channel_t* chan );
-static void init_global_statistics( sdla_t* card );
-static void read_DLCI_IB_mapping( sdla_t* card, fr_channel_t* chan );
-static int setup_for_delayed_transmit(struct net_device* dev,
- struct sk_buff *skb);
-
-struct net_device *move_dev_to_next(sdla_t *card, struct net_device *dev);
-static int check_tx_status(sdla_t *card, struct net_device *dev);
-
-/* Frame Relay Socket API */
-static void trigger_fr_bh (fr_channel_t *);
-static void fr_bh(struct net_device *dev);
-static int fr_bh_cleanup(struct net_device *dev);
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb);
-
-static void trigger_fr_poll(struct net_device *dev);
-static void fr_poll(struct net_device *dev);
-//static void add_gateway(struct net_device *dev);
-
-static void trigger_unconfig_fr(struct net_device *dev);
-static void unconfig_fr (sdla_t *);
-
-static void trigger_config_fr (sdla_t *);
-static void config_fr (sdla_t *);
-
-
-/* Inverse ARP and Dynamic routing functions */
-int process_ARP(arphdr_1490_t *ArpPacket, sdla_t *card, struct net_device *dev);
-int is_arp(void *buf);
-int send_inarp_request(sdla_t *card, struct net_device *dev);
-
-static void trigger_fr_arp(struct net_device *dev);
-static void fr_arp (unsigned long data);
-
-
-/* Udp management functions */
-static int process_udp_mgmt_pkt(sdla_t *card);
-static int udp_pkt_type( struct sk_buff *skb, sdla_t *card );
-static int store_udp_mgmt_pkt(int udp_type, char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, int dlci);
-
-/* IPX functions */
-static void switch_net_numbers(unsigned char *sendpacket,
- unsigned long network_number, unsigned char incoming);
-
-static int handle_IPXWAN(unsigned char *sendpacket, char *devname,
- unsigned char enable_IPX, unsigned long network_number);
-
-/* Lock Functions: SMP supported */
-void s508_s514_unlock(sdla_t *card, unsigned long *smp_flags);
-void s508_s514_lock(sdla_t *card, unsigned long *smp_flags);
-
-unsigned short calc_checksum (char *, int);
-static int setup_fr_header(struct sk_buff *skb,
- struct net_device* dev, char op_mode);
-
-
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * Frame relay 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 wpf_init(sdla_t *card, wandev_conf_t *conf)
-{
-
- int err;
- fr508_flags_t* flags;
-
- union
- {
- char str[80];
- fr_conf_t cfg;
- } u;
-
- fr_buf_info_t* buf_info;
- int i;
-
-
- printk(KERN_INFO "\n");
-
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_FR) {
-
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id);
- return -EINVAL;
-
- }
-
- /* Initialize protocol-specific fields of adapter data space */
- switch (card->hw.fwid) {
-
- case SFID_FR508:
- card->mbox = (void*)(card->hw.dpmbase +
- FR508_MBOX_OFFS);
- card->flags = (void*)(card->hw.dpmbase +
- FR508_FLAG_OFFS);
- if(card->hw.type == SDLA_S514) {
- card->mbox += FR_MB_VECTOR;
- card->flags += FR_MB_VECTOR;
- }
- card->isr = &fr_isr;
- break;
-
- default:
- return -EINVAL;
- }
-
- flags = card->flags;
-
- /* 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 (fr_read_version(card, NULL) || fr_read_version(card, u.str))
- return -EIO;
-
- printk(KERN_INFO "%s: running frame relay firmware v%s\n",
- card->devname, u.str);
-
- /* Adjust configuration */
- conf->mtu += FR_HEADER_LEN;
- conf->mtu = (conf->mtu >= MIN_LGTH_FR_DATA_CFG) ?
- min_t(unsigned int, conf->mtu, FR_MAX_NO_DATA_BYTES_IN_FRAME) :
- FR_CHANNEL_MTU + FR_HEADER_LEN;
-
- conf->bps = min_t(unsigned int, conf->bps, 2048000);
-
- /* Initialze the configuration structure sent to the board to zero */
- memset(&u.cfg, 0, sizeof(u.cfg));
-
- memset(card->u.f.dlci_to_dev_map, 0, sizeof(card->u.f.dlci_to_dev_map));
-
- /* Configure adapter firmware */
-
- u.cfg.mtu = conf->mtu;
- u.cfg.kbps = conf->bps / 1000;
-
- u.cfg.cir_fwd = u.cfg.cir_bwd = 16;
- u.cfg.bc_fwd = u.cfg.bc_bwd = 16;
-
- u.cfg.options = 0x0000;
- printk(KERN_INFO "%s: Global CIR enabled by Default\n", card->devname);
-
- switch (conf->u.fr.signalling) {
-
- case WANOPT_FR_ANSI:
- u.cfg.options = 0x0000;
- break;
-
- case WANOPT_FR_Q933:
- u.cfg.options |= 0x0200;
- break;
-
- case WANOPT_FR_LMI:
- u.cfg.options |= 0x0400;
- break;
-
- case WANOPT_NO:
- u.cfg.options |= 0x0800;
- break;
- default:
- printk(KERN_INFO "%s: Illegal Signalling option\n",
- card->wandev.name);
- return -EINVAL;
- }
-
-
- card->wandev.signalling = conf->u.fr.signalling;
-
- if (conf->station == WANOPT_CPE) {
-
-
- if (conf->u.fr.signalling == WANOPT_NO){
- printk(KERN_INFO
- "%s: ERROR - For NO signalling, station must be set to Node!",
- card->devname);
- return -EINVAL;
- }
-
- u.cfg.station = 0;
- u.cfg.options |= 0x8000; /* auto config DLCI */
- card->u.f.dlci_num = 0;
-
- } else {
-
- u.cfg.station = 1; /* switch emulation mode */
-
- /* For switch emulation we have to create a list of dlci(s)
- * that will be sent to be global SET_DLCI_CONFIGURATION
- * command in fr_configure() routine.
- */
-
- card->u.f.dlci_num = min_t(unsigned int, max_t(unsigned int, conf->u.fr.dlci_num, 1), 100);
-
- for ( i = 0; i < card->u.f.dlci_num; i++) {
-
- card->u.f.node_dlci[i] = (unsigned short)
- conf->u.fr.dlci[i] ? conf->u.fr.dlci[i] : 16;
-
- }
- }
-
- if (conf->clocking == WANOPT_INTERNAL)
- u.cfg.port |= 0x0001;
-
- if (conf->interface == WANOPT_RS232)
- u.cfg.port |= 0x0002;
-
- if (conf->u.fr.t391)
- u.cfg.t391 = min_t(unsigned int, conf->u.fr.t391, 30);
- else
- u.cfg.t391 = 5;
-
- if (conf->u.fr.t392)
- u.cfg.t392 = min_t(unsigned int, conf->u.fr.t392, 30);
- else
- u.cfg.t392 = 15;
-
- if (conf->u.fr.n391)
- u.cfg.n391 = min_t(unsigned int, conf->u.fr.n391, 255);
- else
- u.cfg.n391 = 2;
-
- if (conf->u.fr.n392)
- u.cfg.n392 = min_t(unsigned int, conf->u.fr.n392, 10);
- else
- u.cfg.n392 = 3;
-
- if (conf->u.fr.n393)
- u.cfg.n393 = min_t(unsigned int, conf->u.fr.n393, 10);
- else
- u.cfg.n393 = 4;
-
- if (fr_configure(card, &u.cfg))
- return -EIO;
-
- if (card->hw.type == SDLA_S514) {
-
- buf_info = (void*)(card->hw.dpmbase + FR_MB_VECTOR +
- FR508_RXBC_OFFS);
-
- card->rxmb = (void*)(buf_info->rse_next + card->hw.dpmbase);
-
- card->u.f.rxmb_base =
- (void*)(buf_info->rse_base + card->hw.dpmbase);
-
- card->u.f.rxmb_last =
- (void*)(buf_info->rse_base +
- (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) +
- card->hw.dpmbase);
- }else{
- buf_info = (void*)(card->hw.dpmbase + FR508_RXBC_OFFS);
-
- card->rxmb = (void*)(buf_info->rse_next -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- card->u.f.rxmb_base =
- (void*)(buf_info->rse_base -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- card->u.f.rxmb_last =
- (void*)(buf_info->rse_base +
- (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) -
- FR_MB_VECTOR + card->hw.dpmbase);
- }
-
- card->u.f.rx_base = buf_info->buf_base;
- card->u.f.rx_top = buf_info->buf_top;
-
- card->u.f.tx_interrupts_pending = 0;
-
- card->wandev.mtu = conf->mtu;
- card->wandev.bps = conf->bps;
- card->wandev.interface = conf->interface;
- card->wandev.clocking = conf->clocking;
- card->wandev.station = conf->station;
- card->poll = NULL;
- card->exec = &wpf_exec;
- card->wandev.update = &update;
- card->wandev.new_if = &new_if;
- card->wandev.del_if = &del_if;
- card->wandev.state = WAN_DISCONNECTED;
- card->wandev.ttl = conf->ttl;
- card->wandev.udp_port = conf->udp_port;
- card->disable_comm = &disable_comm;
- card->u.f.arp_dev = NULL;
-
- /* Intialize global statistics for a card */
- init_global_statistics( card );
-
- card->TracingEnabled = 0;
-
- /* Interrupt Test */
- Intr_test_counter = 0;
- card->intr_mode = INTR_TEST_MODE;
- err = intr_test( card );
-
- printk(KERN_INFO "%s: End of Interrupt Test rc=0x%x count=%i\n",
- card->devname,err,Intr_test_counter);
-
- if (err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) {
- printk(KERN_ERR "%s: Interrupt Test Failed, Counter: %i\n",
- card->devname, Intr_test_counter);
- printk(KERN_ERR "Please choose another interrupt\n");
- err = -EIO;
- return err;
- }
-
- printk(KERN_INFO "%s: Interrupt Test Passed, Counter: %i\n",
- card->devname, Intr_test_counter);
-
-
- /* Apr 28 2000. Nenad Corbic
- * Enable commnunications here, not in if_open or new_if, since
- * interfaces come down when the link is disconnected.
- */
-
- /* If you enable comms and then set ints, you get a Tx int as you
- * perform the SET_INT_TRIGGERS command. So, we only set int
- * triggers and then adjust the interrupt mask (to disable Tx ints)
- * before enabling comms.
- */
- if (fr_set_intr_mode(card, (FR_INTR_RXRDY | FR_INTR_TXRDY |
- FR_INTR_DLC | FR_INTR_TIMER | FR_INTR_TX_MULT_DLCIs) ,
- card->wandev.mtu, 0)) {
- return -EIO;
- }
-
- flags->imask &= ~(FR_INTR_TXRDY | FR_INTR_TIMER);
-
- if (fr_comm_enable(card)) {
- return -EIO;
- }
- wanpipe_set_state(card, WAN_CONNECTED);
- spin_lock_init(&card->u.f.if_send_lock);
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Update device status & statistics.
- */
-static int update(struct wan_device* wandev)
-{
- volatile sdla_t* card;
- unsigned long timeout;
- fr508_flags_t* flags;
-
- /* sanity checks */
- if ((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
-
- if (wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
-
- card = wandev->private;
- flags = card->flags;
-
-
- card->u.f.update_comms_stats = 1;
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UPDATE;
- flags->imask |= FR_INTR_TIMER;
- timeout = jiffies;
- for(;;) {
- if(card->u.f.update_comms_stats == 0)
- break;
- if (time_after(jiffies, timeout + 1 * HZ)){
- card->u.f.update_comms_stats = 0;
- 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;
- fr_channel_t* chan;
- int dlci = 0;
- int err = 0;
-
-
- 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 */
- chan = kmalloc(sizeof(fr_channel_t), GFP_KERNEL);
-
- if (chan == NULL)
- return -ENOMEM;
-
- memset(chan, 0, sizeof(fr_channel_t));
- strcpy(chan->name, conf->name);
- chan->card = card;
-
- /* verify media address */
- if (isdigit(conf->addr[0])) {
-
- dlci = dec_to_uint(conf->addr, 0);
-
- if (dlci && (dlci <= HIGHEST_VALID_DLCI)) {
-
- chan->dlci = dlci;
-
- } else {
-
- printk(KERN_ERR
- "%s: Invalid DLCI %u on interface %s!\n",
- wandev->name, dlci, chan->name);
- err = -EINVAL;
- }
-
- } else {
- printk(KERN_ERR
- "%s: Invalid media address on interface %s!\n",
- wandev->name, chan->name);
- err = -EINVAL;
- }
-
- if ((chan->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) even if it is
- * a bridged DLCI, or as an API
- */
- if (strcmp(conf->usedby, "WANPIPE") == 0 ||
- strcmp(conf->usedby, "BRIDGE") == 0 ||
- strcmp(conf->usedby, "BRIDGE_N") == 0){
-
- if(strcmp(conf->usedby, "WANPIPE") == 0){
- chan->common.usedby = WANPIPE;
-
- printk(KERN_INFO "%s: Running in WANPIPE mode.\n",
- card->devname);
-
- }else if(strcmp(conf->usedby, "BRIDGE") == 0){
-
- chan->common.usedby = BRIDGE;
-
- printk(KERN_INFO "%s: Running in WANPIPE (BRIDGE) mode.\n",
- card->devname);
- }else if( strcmp(conf->usedby, "BRIDGE_N") == 0 ){
-
- chan->common.usedby = BRIDGE_NODE;
-
- printk(KERN_INFO "%s: Running in WANPIPE (BRIDGE_NODE) mode.\n",
- card->devname);
- }
-
- if (!err){
- /* Dynamic interface configuration option.
- * On disconnect, if the options is selected,
- * the interface will be brought down */
- if (conf->if_down == WANOPT_YES){
- set_bit(DYN_OPT_ON,&chan->interface_down);
- printk(KERN_INFO
- "%s: Dynamic interface configuration enabled.\n",
- card->devname);
- }
- }
-
- } else if(strcmp(conf->usedby, "API") == 0){
-
- chan->common.usedby = API;
- printk(KERN_INFO "%s: Running in API mode.\n",
- wandev->name);
- }
-
- if (err) {
-
- kfree(chan);
- return err;
- }
-
- /* place cir,be,bc and other channel specific information into the
- * chan structure
- */
- if (conf->cir) {
-
- chan->cir = max_t(unsigned int, 1,
- min_t(unsigned int, conf->cir, 512));
- chan->cir_status = CIR_ENABLED;
-
-
- /* If CIR is enabled, force BC to equal CIR
- * this solves number of potential problems if CIR is
- * set and BC is not
- */
- chan->bc = chan->cir;
-
- if (conf->be){
- chan->be = max_t(unsigned int,
- 0, min_t(unsigned int, conf->be, 511));
- }else{
- conf->be = 0;
- }
-
- printk (KERN_INFO "%s: CIR enabled for DLCI %i \n",
- wandev->name,chan->dlci);
- printk (KERN_INFO "%s: CIR = %i ; BC = %i ; BE = %i\n",
- wandev->name,chan->cir,chan->bc,chan->be);
-
-
- }else{
- chan->cir_status = CIR_DISABLED;
- printk (KERN_INFO "%s: CIR disabled for DLCI %i\n",
- wandev->name,chan->dlci);
- }
-
- chan->mc = conf->mc;
-
- if (conf->inarp == WANOPT_YES){
- printk(KERN_INFO "%s: Inverse ARP Support Enabled\n",card->devname);
- chan->inarp = conf->inarp ? INARP_REQUEST : INARP_NONE;
- chan->inarp_interval = conf->inarp_interval ? conf->inarp_interval : 10;
- }else{
- printk(KERN_INFO "%s: Inverse ARP Support Disabled\n",card->devname);
- chan->inarp = INARP_NONE;
- chan->inarp_interval = 10;
- }
-
-
- chan->dlci_configured = DLCI_NOT_CONFIGURED;
-
-
- /*FIXME: IPX disabled in this WANPIPE version */
- if (conf->enable_IPX == WANOPT_YES){
- printk(KERN_INFO "%s: ERROR - This version of WANPIPE doesn't support IPX\n",
- card->devname);
- kfree(chan);
- return -EINVAL;
- }else{
- chan->enable_IPX = WANOPT_NO;
- }
-
- if (conf->network_number){
- chan->network_number = conf->network_number;
- }else{
- chan->network_number = 0xDEADBEEF;
- }
-
- chan->route_flag = NO_ROUTE;
-
- init_chan_statistics(chan);
-
- chan->transmit_length = 0;
-
- /* prepare network device data space for registration */
- strcpy(dev->name,chan->name);
-
- dev->init = &if_init;
- dev->priv = chan;
-
- /* Initialize FR Polling Task Queue
- * We need a poll routine for each network
- * interface.
- */
- INIT_WORK(&chan->fr_poll_work, (void *)fr_poll, dev);
-
- init_timer(&chan->fr_arp_timer);
- chan->fr_arp_timer.data=(unsigned long)dev;
- chan->fr_arp_timer.function = fr_arp;
-
- wandev->new_if_cnt++;
-
- /* Tells us that if this interface is a
- * gateway or not */
- if ((chan->gateway = conf->gateway) == WANOPT_YES){
- printk(KERN_INFO "%s: Interface %s is set as a gateway.\n",
- card->devname,dev->name);
- }
-
- /* M. Grant Patch Apr 28 2000
- * Disallow duplicate dlci configurations. */
- if (card->u.f.dlci_to_dev_map[chan->dlci] != NULL) {
- kfree(chan);
- return -EBUSY;
- }
-
- /* Configure this dlci at a later date, when
- * the interface comes up. i.e. when if_open()
- * executes */
- set_bit(0,&chan->config_dlci);
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/*============================================================================
- * Delete logical channel.
- */
-static int del_if(struct wan_device* wandev, struct net_device* dev)
-{
- fr_channel_t* chan = dev->priv;
- unsigned long smp_flags=0;
-
- /* This interface is dead, make sure the
- * ARP timer is stopped */
- del_timer(&chan->fr_arp_timer);
-
- /* If we are a NODE, we must unconfigure this DLCI
- * Trigger an unconfigure command that will
- * be executed in timer interrupt. We must wait
- * for the command to complete. */
- trigger_unconfig_fr(dev);
-
- lock_adapter_irq(&wandev->lock, &smp_flags);
- wandev->new_if_cnt--;
- unlock_adapter_irq(&wandev->lock, &smp_flags);
-
- return 0;
-}
-
-
-/*=====================================================================
- * disable_comm
- *
- * Description:
- * Disable communications.
- * This code runs in shutdown (sdlamain.c)
- * under critical flag. Therefore it is not
- * necessary to set a critical flag here
- *
- * Usage:
- * Commnunications are disabled only on a card
- * shutdown.
- */
-
-static void disable_comm (sdla_t *card)
-{
- printk(KERN_INFO "%s: Disabling Communications!\n",
- card->devname);
- fr_comm_disable(card);
-}
-
-/****** WANPIPE-specific entry points ***************************************/
-
-/*============================================================================
- * Execute adapter interface command.
- */
-static int wpf_exec (struct sdla* card, void* u_cmd, void* u_data)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err, len;
- fr_cmd_t cmd;
-
- if(copy_from_user((void*)&cmd, u_cmd, sizeof(cmd)))
- return -EFAULT;
-
- /* execute command */
- do
- {
- memcpy(&mbox->cmd, &cmd, sizeof(cmd));
-
- if (cmd.length){
- if( copy_from_user((void*)&mbox->data, u_data, cmd.length))
- return -EFAULT;
- }
-
- if (sdla_exec(mbox))
- err = mbox->cmd.result;
-
- else return -EIO;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- /* return result */
- if (copy_to_user(u_cmd, (void*)&mbox->cmd, sizeof(fr_cmd_t)))
- return -EFAULT;
-
- len = mbox->cmd.length;
-
- if (len && u_data && !copy_to_user(u_data, (void*)&mbox->data, len))
- return -EFAULT;
- 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)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- struct wan_device* wandev = &card->wandev;
-
- /* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_header = NULL;
- 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;
-
- if (chan->common.usedby == WANPIPE || chan->common.usedby == API){
-
- /* Initialize media-specific parameters */
- if (chan->true_if_encoding){
- dev->type = ARPHRD_DLCI; /* This breaks tcpdump */
- }else{
- dev->type = ARPHRD_PPP; /* ARP h/w type */
- }
-
- dev->flags |= IFF_POINTOPOINT;
- dev->flags |= IFF_NOARP;
-
- /* Enable Multicast addressing */
- if (chan->mc == WANOPT_YES){
- dev->flags |= IFF_MULTICAST;
- }
-
- dev->mtu = wandev->mtu - FR_HEADER_LEN;
- /* For an API, the maximum number of bytes that the stack will pass
- to the driver is (dev->mtu + dev->hard_header_len). So, adjust the
- mtu so that a frame of maximum size can be transmitted by the API.
- */
- if(chan->common.usedby == API) {
- dev->mtu += (sizeof(api_tx_hdr_t) - FR_HEADER_LEN);
- }
-
- dev->hard_header_len = FR_HEADER_LEN;/* media header length */
- dev->addr_len = 2; /* hardware address length */
- *(unsigned short*)dev->dev_addr = htons(chan->dlci);
-
- /* Set transmit buffer queue length */
- dev->tx_queue_len = 100;
-
- }else{
-
- /* Setup the interface for Bridging */
- int hw_addr=0;
- ether_setup(dev);
-
- /* Use a random number to generate the MAC address */
- memcpy(dev->dev_addr, "\xFE\xFC\x00\x00\x00\x00", 6);
- get_random_bytes(&hw_addr, sizeof(hw_addr));
- *(int *)(dev->dev_addr + 2) += hw_addr;
- }
-
- /* Initialize hardware parameters (just for reference) */
- 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_MODULE_OWNER(dev);
-
- return 0;
-}
-
-/*============================================================================
- * Open network interface.
- * o if this is the first open, then 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)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- int err = 0;
- struct timeval tv;
-
- if (netif_running(dev))
- return -EBUSY;
-
- /* Initialize the task queue */
- chan->tq_working=0;
-
- INIT_WORK(&chan->common.wanpipe_work, (void *)fr_bh, dev);
-
- /* Allocate and initialize BH circular buffer */
- chan->bh_head = kmalloc((sizeof(bh_data_t)*MAX_BH_BUFF),GFP_ATOMIC);
- memset(chan->bh_head,0,(sizeof(bh_data_t)*MAX_BH_BUFF));
- atomic_set(&chan->bh_buff_used, 0);
-
- netif_start_queue(dev);
-
- wanpipe_open(card);
- do_gettimeofday( &tv );
- chan->router_start_time = tv.tv_sec;
-
- if (test_bit(0,&chan->config_dlci)){
- trigger_config_fr (card);
- }else if (chan->inarp == INARP_REQUEST){
- trigger_fr_arp(dev);
- }
-
- return err;
-}
-
-/*============================================================================
- * Close network interface.
- * o if this is the last open, then disable communications and interrupts.
- * o reset flags.
- */
-static int if_close(struct net_device* dev)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
-
- if (chan->inarp == INARP_CONFIGURED) {
- chan->inarp = INARP_REQUEST;
- }
-
- netif_stop_queue(dev);
- wanpipe_close(card);
-
- return 0;
-}
-
-/*============================================================================
- * Re-build media header.
- *
- * Return: 1 physical address resolved.
- * 0 physical address not resolved
- */
-static int if_rebuild_hdr (struct sk_buff* skb)
-{
- struct net_device *dev = skb->dev;
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
-
- printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n",
- card->devname, dev->name);
- return 1;
-}
-
-/*============================================================================
- * Handle transmit timeout event from netif watchdog
- */
-static void if_tx_timeout(struct net_device *dev)
-{
- fr_channel_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.
- */
-
- chan->drvstats_if_send.if_send_tbusy++;
- ++chan->ifstats.collisions;
-
- printk (KERN_INFO "%s: Transmit timed out on %s\n",
- card->devname, dev->name);
- chan->drvstats_if_send.if_send_tbusy_timeout++;
- netif_wake_queue (dev);
-
-}
-
-
-/*============================================================================
- * 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 set critical flag when accessing board.
- * o check link state. If link is not up, then drop the packet.
- * o check channel status. If it's down then initiate a call.
- * o pass a packet to corresponding WAN device.
- * o free socket buffer
- *
- * Return: 0 complete (socket buffer must be freed)
- * non-0 packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- * bottom half" (with interrupts enabled).
- *
- * 2. Using netif_start_queue() and netif_stop_queue()
- * 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)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- int err;
- unsigned char *sendpacket;
- fr508_flags_t* adptr_flags = card->flags;
- int udp_type;
- long delay_tx_queued = 0;
- unsigned long smp_flags=0;
- unsigned char attr = 0;
-
- chan->drvstats_if_send.if_send_entry++;
-
- 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);
- chan->drvstats_if_send.if_send_skb_null ++;
-
- netif_wake_queue(dev);
- return 0;
- }
-
- /* If a peripheral task is running just drop packets */
- if (test_bit(PERI_CRIT, &card->wandev.critical)){
-
- printk(KERN_INFO "%s: Critical in if_send(): Peripheral running!\n",
- card->devname);
-
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
-
- /* We must set the 'tbusy' flag if we already have a packet queued for
- transmission in the transmit interrupt handler. However, we must
- ensure that the transmit interrupt does not reset the 'tbusy' flag
- just before we set it, as this will result in a "transmit timeout".
- */
- set_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical);
- if(chan->transmit_length) {
- netif_stop_queue(dev);
- chan->tick_counter = jiffies;
- clear_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical);
- return 1;
- }
- clear_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical);
-
- /* Move the if_header() code to here. By inserting frame
- * relay header in if_header() we would break the
- * tcpdump and other packet sniffers */
- chan->fr_header_len = setup_fr_header(skb,dev,chan->common.usedby);
- if (chan->fr_header_len < 0 ){
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
-
- sendpacket = skb->data;
-
- udp_type = udp_pkt_type(skb, card);
-
- if(udp_type != UDP_INVALID_TYPE) {
- if(store_udp_mgmt_pkt(udp_type, UDP_PKT_FRM_STACK, card, skb,
- chan->dlci)) {
- adptr_flags->imask |= FR_INTR_TIMER;
- if (udp_type == UDP_FPIPE_TYPE){
- chan->drvstats_if_send.
- if_send_PIPE_request ++;
- }
- }
- netif_start_queue(dev);
- return 0;
- }
-
- //FIXME: can we do better than sendpacket[2]?
- if ((chan->common.usedby == WANPIPE) && (sendpacket[2] == 0x45)) {
-
- /* check to see if the source IP address is a broadcast or */
- /* multicast IP address */
- if(chk_bcast_mcast_addr(card, dev, skb)){
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
- }
-
-
- /* Lock the S514/S508 card: SMP Supported */
- s508_s514_lock(card,&smp_flags);
-
- if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
-
- chan->drvstats_if_send.if_send_critical_non_ISR ++;
- chan->ifstats.tx_dropped ++;
- printk(KERN_INFO "%s Critical in IF_SEND: if_send() already running!\n",
- card->devname);
- goto if_send_start_and_exit;
- }
-
- /* API packet check: minimum packet size must be greater than
- * 16 byte API header */
- if((chan->common.usedby == API) && (skb->len <= sizeof(api_tx_hdr_t))) {
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
-
- goto if_send_start_and_exit;
-
- }else{
- /* During API transmission, get rid of the API header */
- if (chan->common.usedby == API) {
- api_tx_hdr_t* api_tx_hdr;
- api_tx_hdr = (api_tx_hdr_t*)&skb->data[0x00];
- attr = api_tx_hdr->attr;
- skb_pull(skb,sizeof(api_tx_hdr_t));
- }
- }
-
- if (card->wandev.state != WAN_CONNECTED) {
- chan->drvstats_if_send.if_send_wan_disconnected ++;
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
- } else if (chan->common.state != WAN_CONNECTED) {
- chan->drvstats_if_send.if_send_dlci_disconnected ++;
-
- /* Update the DLCI state in timer interrupt */
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UPDATE_STATE;
- adptr_flags->imask |= FR_INTR_TIMER;
-
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
- } else if (!is_tx_ready(card, chan)) {
- /* No tx buffers available, store for delayed transmit */
- if (!setup_for_delayed_transmit(dev, skb)){
- set_bit(1,&delay_tx_queued);
- }
- chan->drvstats_if_send.if_send_no_bfrs++;
-
- } else if (!skb->protocol) {
- /* No protocols drop packet */
- chan->drvstats_if_send.if_send_protocol_error ++;
- ++card->wandev.stats.tx_errors;
-
- } else if (test_bit(ARP_CRIT,&card->wandev.critical)){
- /* We are trying to send an ARP Packet, block IP data until
- * ARP is sent */
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
- } else {
- //FIXME: IPX is not implemented in this version of Frame Relay ?
- if((chan->common.usedby == WANPIPE) &&
- sendpacket[1] == 0x00 &&
- sendpacket[2] == 0x80 &&
- sendpacket[6] == 0x81 &&
- sendpacket[7] == 0x37) {
-
- if( chan->enable_IPX ) {
- switch_net_numbers(sendpacket,
- chan->network_number, 0);
- } else {
- //FIXME: Take this out when IPX is fixed
- printk(KERN_INFO
- "%s: WARNING: Unsupported IPX data in send, packet dropped\n",
- card->devname);
- }
-
- }else{
- err = fr_send_data_header(card, chan->dlci, attr, skb->len, skb->data, chan->fr_header_len);
- if (err) {
- switch(err) {
- case FRRES_CIR_OVERFLOW:
- case FRRES_BUFFER_OVERFLOW:
- if (!setup_for_delayed_transmit(dev, skb)){
- set_bit(1,&delay_tx_queued);
- }
- chan->drvstats_if_send.
- if_send_adptr_bfrs_full ++;
- break;
-
- case FRRES_TOO_LONG:
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Error: Frame too long, transmission failed %i\n",
- card->devname, (unsigned int)skb->len);
- }
- /* Drop down to default */
- default:
- chan->drvstats_if_send.
- if_send_dlci_disconnected ++;
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- break;
- }
- } else {
- chan->drvstats_if_send.
- if_send_bfr_passed_to_adptr++;
- ++chan->ifstats.tx_packets;
- ++card->wandev.stats.tx_packets;
-
- chan->ifstats.tx_bytes += skb->len;
- card->wandev.stats.tx_bytes += skb->len;
- dev->trans_start = jiffies;
- }
- }
- }
-
-if_send_start_and_exit:
-
- netif_start_queue(dev);
-
- /* If we queued the packet for transmission, we must not
- * deallocate it. The packet is unlinked from the IP stack
- * not copied. Therefore, we must keep the original packet */
- if (!test_bit(1,&delay_tx_queued)) {
- dev_kfree_skb_any(skb);
- }else{
- adptr_flags->imask |= FR_INTR_TXRDY;
- card->u.f.tx_interrupts_pending ++;
- }
-
- clear_bit(SEND_CRIT, (void*)&card->wandev.critical);
-
- s508_s514_unlock(card,&smp_flags);
-
- return 0;
-}
-
-
-
-/*============================================================================
- * Setup so that a frame can be transmitted on the occurrence of a transmit
- * interrupt.
- */
-static int setup_for_delayed_transmit(struct net_device* dev,
- struct sk_buff *skb)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- fr_dlci_interface_t* dlci_interface;
- int len = skb->len;
-
- /* Check that the dlci is properly configured,
- * before using tx interrupt */
- if (!chan->dlci_int_interface){
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: ERROR on DLCI %i: Not configured properly !\n",
- card->devname, chan->dlci);
- printk(KERN_INFO "%s: Please contact Sangoma Technologies\n",
- card->devname);
- }
- return 1;
- }
-
- dlci_interface = chan->dlci_int_interface;
-
- if(chan->transmit_length) {
- printk(KERN_INFO "%s: Big mess in setup_for_del...\n",
- card->devname);
- return 1;
- }
-
- if(len > FR_MAX_NO_DATA_BYTES_IN_FRAME) {
- //FIXME: increment some statistic */
- return 1;
- }
-
- chan->transmit_length = len;
- chan->delay_skb = skb;
-
- dlci_interface->gen_interrupt |= FR_INTR_TXRDY;
- dlci_interface->packet_length = len;
-
- /* Turn on TX interrupt at the end of if_send */
- return 0;
-}
-
-
-/*============================================================================
- * Check to see if the packet to be transmitted contains a broadcast or
- * multicast source IP address.
- * Return 0 if not broadcast/multicast address, otherwise return 1.
- */
-
-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;
- fr_channel_t* chan = dev->priv;
-
- /* read the IP source address from the outgoing packet */
- src_ip_addr = *(u32 *)(skb->data + 14);
-
- /* 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((chan->mc == WANOPT_NO) && (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 nothing.
- */
-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;
-
-
- fr_udp_pkt_t *fr_udp_pkt = (fr_udp_pkt_t *)data;
-
- /* Set length of packet */
- len = //sizeof(fr_encap_hdr_t)+
- sizeof(ip_pkt_t)+
- sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- mbox_len;
-
-
- /* fill in UDP reply */
- fr_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)+
- 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);
- fr_udp_pkt->udp_pkt.udp_length = temp;
-
- /* swap UDP ports */
- temp = fr_udp_pkt->udp_pkt.udp_src_port;
- fr_udp_pkt->udp_pkt.udp_src_port =
- fr_udp_pkt->udp_pkt.udp_dst_port;
- fr_udp_pkt->udp_pkt.udp_dst_port = temp;
-
-
-
- /* add UDP pseudo header */
- temp = 0x1100;
- *((unsigned short *)
- (fr_udp_pkt->data+mbox_len+even_bound)) = temp;
- temp = (udp_length<<8)|(udp_length>>8);
- *((unsigned short *)
- (fr_udp_pkt->data+mbox_len+even_bound+2)) = temp;
-
- /* calculate UDP checksum */
- fr_udp_pkt->udp_pkt.udp_checksum = 0;
-
- fr_udp_pkt->udp_pkt.udp_checksum =
- calc_checksum(&data[UDP_OFFSET/*+sizeof(fr_encap_hdr_t)*/],
- udp_length+UDP_OFFSET);
-
- /* fill in IP length */
- ip_length = udp_length + sizeof(ip_pkt_t);
- temp = (ip_length<<8)|(ip_length>>8);
- fr_udp_pkt->ip_pkt.total_length = temp;
-
- /* swap IP addresses */
- ip_temp = fr_udp_pkt->ip_pkt.ip_src_address;
- fr_udp_pkt->ip_pkt.ip_src_address =
- fr_udp_pkt->ip_pkt.ip_dst_address;
- fr_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
-
-
- /* fill in IP checksum */
- fr_udp_pkt->ip_pkt.hdr_checksum = 0;
- fr_udp_pkt->ip_pkt.hdr_checksum =
- calc_checksum(&data[/*sizeof(fr_encap_hdr_t)*/0],
- 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;
-}
-
-/*
- If incoming is 0 (outgoing)- if the net numbers is ours make it 0
- if incoming is 1 - if the net number is 0 make it ours
-
-*/
-static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, unsigned char incoming)
-{
- unsigned long pnetwork_number;
-
- pnetwork_number = (unsigned long)((sendpacket[14] << 24) +
- (sendpacket[15] << 16) + (sendpacket[16] << 8) +
- sendpacket[17]);
-
- if (!incoming) {
- /* If the destination network number is ours, make it 0 */
- if( pnetwork_number == network_number) {
- sendpacket[14] = sendpacket[15] = sendpacket[16] =
- sendpacket[17] = 0x00;
- }
- } else {
- /* If the incoming network is 0, make it ours */
- if( pnetwork_number == 0) {
- sendpacket[14] = (unsigned char)(network_number >> 24);
- sendpacket[15] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[16] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[17] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-
-
- pnetwork_number = (unsigned long)((sendpacket[26] << 24) +
- (sendpacket[27] << 16) + (sendpacket[28] << 8) +
- sendpacket[29]);
-
- if( !incoming ) {
- /* If the source network is ours, make it 0 */
- if( pnetwork_number == network_number) {
- sendpacket[26] = sendpacket[27] = sendpacket[28] =
- sendpacket[29] = 0x00;
- }
- } else {
- /* If the source network is 0, make it ours */
- if( pnetwork_number == 0 ) {
- sendpacket[26] = (unsigned char)(network_number >> 24);
- sendpacket[27] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[28] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[29] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-} /* switch_net_numbers */
-
-/*============================================================================
- * Get ethernet-style interface statistics.
- * Return a pointer to struct enet_statistics.
- */
-static struct net_device_stats *if_stats(struct net_device *dev)
-{
- fr_channel_t* chan = dev->priv;
-
- if(chan == NULL)
- return NULL;
-
- return &chan->ifstats;
-}
-
-/****** Interrupt Handlers **************************************************/
-
-/*============================================================================
- * fr_isr: S508 frame relay interrupt service routine.
- *
- * Description:
- * Frame relay main interrupt service route. This
- * function check the interrupt type and takes
- * the appropriate action.
- */
-static void fr_isr (sdla_t* card)
-{
- fr508_flags_t* flags = card->flags;
- char *ptr = &flags->iflag;
- int i,err;
- fr_mbox_t* mbox = card->mbox;
-
- /* This flag prevents nesting of interrupts. See sdla_isr() routine
- * in sdlamain.c. */
- card->in_isr = 1;
-
- ++card->statistics.isr_entry;
-
-
- /* All peripheral (configuraiton, re-configuration) events
- * take presidence over the ISR. Thus, retrigger */
- if (test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
- ++card->statistics.isr_already_critical;
- goto fr_isr_exit;
- }
-
- if(card->hw.type != SDLA_S514) {
- if (test_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
- printk(KERN_INFO "%s: Critical while in ISR: If Send Running!\n",
- card->devname);
- ++card->statistics.isr_already_critical;
- goto fr_isr_exit;
- }
- }
-
- switch (flags->iflag) {
-
- case FR_INTR_RXRDY: /* receive interrupt */
- ++card->statistics.isr_rx;
- rx_intr(card);
- break;
-
-
- case FR_INTR_TXRDY: /* transmit interrupt */
- ++ card->statistics.isr_tx;
- tx_intr(card);
- break;
-
- case FR_INTR_READY:
- Intr_test_counter++;
- ++card->statistics.isr_intr_test;
- break;
-
- case FR_INTR_DLC: /* Event interrupt occurred */
- mbox->cmd.command = FR_READ_STATUS;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err)
- fr_event(card, err, mbox);
- break;
-
- case FR_INTR_TIMER: /* Timer interrupt */
- timer_intr(card);
- break;
-
- default:
- ++card->statistics.isr_spurious;
- spur_intr(card);
- printk(KERN_INFO "%s: Interrupt Type 0x%02X!\n",
- card->devname, flags->iflag);
-
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
- printk(KERN_INFO "\n");
-
- break;
- }
-
-fr_isr_exit:
-
- card->in_isr = 0;
- flags->iflag = 0;
- return;
-}
-
-
-
-/*===========================================================
- * rx_intr Receive interrupt handler.
- *
- * Description
- * Upon receiveing an interrupt:
- * 1. Check that the firmware is in sync with
- * the driver.
- * 2. Find an appropriate network interface
- * based on the received dlci number.
- * 3. Check that the netowrk interface exists
- * and that it's setup properly.
- * 4. Copy the data into an skb buffer.
- * 5. Check the packet type and take
- * appropriate acton: UPD, API, ARP or Data.
- */
-
-static void rx_intr (sdla_t* card)
-{
- fr_rx_buf_ctl_t* frbuf = card->rxmb;
- fr508_flags_t* flags = card->flags;
- fr_channel_t* chan;
- char *ptr = &flags->iflag;
- struct sk_buff* skb;
- struct net_device* dev;
- void* buf;
- unsigned dlci, len, offs, len_incl_hdr;
- int i, udp_type;
-
-
- /* Check that firmware buffers are in sync */
- if (frbuf->flag != 0x01) {
-
- printk(KERN_INFO
- "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
- card->devname, (unsigned)frbuf, frbuf->flag);
-
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
- printk(KERN_INFO "\n");
-
- ++card->statistics.rx_intr_corrupt_rx_bfr;
-
- /* Bug Fix: Mar 6 2000
- * If we get a corrupted mailbox, it means 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");
- fr_set_intr_mode(card, 0, 0, 0);
- return;
- }
-
- len = frbuf->length;
- dlci = frbuf->dlci;
- offs = frbuf->offset;
-
- /* Find the network interface for this packet */
- dev = find_channel(card, dlci);
-
-
- /* Check that the network interface is active and
- * properly setup */
- if (dev == NULL) {
- if( net_ratelimit()) {
- printk(KERN_INFO "%s: received data on unconfigured DLCI %d!\n",
- card->devname, dlci);
- }
- ++card->statistics.rx_intr_on_orphaned_DLCI;
- ++card->wandev.stats.rx_dropped;
- goto rx_done;
- }
-
- if ((chan = dev->priv) == NULL){
- if( net_ratelimit()) {
- printk(KERN_INFO "%s: received data on unconfigured DLCI %d!\n",
- card->devname, dlci);
- }
- ++card->statistics.rx_intr_on_orphaned_DLCI;
- ++card->wandev.stats.rx_dropped;
- goto rx_done;
- }
-
- skb = dev_alloc_skb(len);
-
- if (!netif_running(dev) || (skb == NULL)){
-
- ++chan->ifstats.rx_dropped;
-
- if(skb == NULL) {
- if (net_ratelimit()) {
- printk(KERN_INFO
- "%s: no socket buffers available!\n",
- card->devname);
- }
- chan->drvstats_rx_intr.rx_intr_no_socket ++;
- }
-
- if (!netif_running(dev)){
- chan->drvstats_rx_intr.
- rx_intr_dev_not_started ++;
- if (skb){
- dev_kfree_skb_any(skb);
- }
- }
- goto rx_done;
- }
-
- /* Copy data from the board into the socket buffer */
- if ((offs + len) > card->u.f.rx_top + 1) {
- unsigned tmp = card->u.f.rx_top - offs + 1;
-
- buf = skb_put(skb, tmp);
- sdla_peek(&card->hw, offs, buf, tmp);
- offs = card->u.f.rx_base;
- len -= tmp;
- }
-
- buf = skb_put(skb, len);
- sdla_peek(&card->hw, offs, buf, len);
-
-
- /* We got the packet from the bard.
- * Check the packet type and take appropriate action */
-
- udp_type = udp_pkt_type( skb, card );
-
- if(udp_type != UDP_INVALID_TYPE) {
-
- /* UDP Debug packet received, store the
- * packet and handle it in timer interrupt */
-
- skb_pull(skb, 1);
- if (wanrouter_type_trans(skb, dev)){
- if(store_udp_mgmt_pkt(udp_type,UDP_PKT_FRM_NETWORK,card,skb,dlci)){
-
- flags->imask |= FR_INTR_TIMER;
-
- if (udp_type == UDP_FPIPE_TYPE){
- ++chan->drvstats_rx_intr.rx_intr_PIPE_request;
- }
- }
- }
-
- }else if (chan->common.usedby == API) {
-
- /* We are in API mode.
- * Add an API header to the RAW packet
- * and queue it into a circular buffer.
- * Then kick the fr_bh() bottom half handler */
-
- api_rx_hdr_t* api_rx_hdr;
- chan->drvstats_rx_intr.rx_intr_bfr_passed_to_stack ++;
- chan->ifstats.rx_packets ++;
- card->wandev.stats.rx_packets ++;
-
- chan->ifstats.rx_bytes += skb->len;
- card->wandev.stats.rx_bytes += skb->len;
-
- skb_push(skb, sizeof(api_rx_hdr_t));
- api_rx_hdr = (api_rx_hdr_t*)&skb->data[0x00];
- api_rx_hdr->attr = frbuf->attr;
- api_rx_hdr->time_stamp = frbuf->tmstamp;
-
- skb->protocol = htons(ETH_P_IP);
- skb->mac.raw = skb->data;
- skb->dev = dev;
- skb->pkt_type = WAN_PACKET_DATA;
-
- bh_enqueue(dev, skb);
-
- trigger_fr_bh(chan);
-
- }else if (handle_IPXWAN(skb->data,chan->name,chan->enable_IPX, chan->network_number)){
-
- //FIXME: Frame Relay IPX is not supported, Yet !
- //if (chan->enable_IPX) {
- // fr_send(card, dlci, 0, skb->len,skb->data);
- //}
- dev_kfree_skb_any(skb);
-
- } else if (is_arp(skb->data)) {
-
- /* ARP support enabled Mar 16 2000
- * Process incoming ARP reply/request, setup
- * dynamic routes. */
-
- if (process_ARP((arphdr_1490_t *)skb->data, card, dev)) {
- if (net_ratelimit()){
- printk (KERN_INFO
- "%s: Error processing ARP Packet.\n",
- card->devname);
- }
- }
- dev_kfree_skb_any(skb);
-
- } else if (skb->data[0] != 0x03) {
-
- if (net_ratelimit()) {
- printk(KERN_INFO "%s: Non IETF packet discarded.\n",
- card->devname);
- }
- dev_kfree_skb_any(skb);
-
- } else {
-
- len_incl_hdr = skb->len;
- /* Decapsulate packet and pass it up the
- protocol stack */
- skb->dev = dev;
-
- if (chan->common.usedby == BRIDGE || chan->common.usedby == BRIDGE_NODE){
-
- /* Make sure it's an Ethernet frame, otherwise drop it */
- if (!memcmp(skb->data, "\x03\x00\x80\x00\x80\xC2\x00\x07", 8)) {
- skb_pull(skb, 8);
- skb->protocol=eth_type_trans(skb,dev);
- }else{
- ++chan->drvstats_rx_intr.rx_intr_bfr_not_passed_to_stack;
- ++chan->ifstats.rx_errors;
- ++card->wandev.stats.rx_errors;
- goto rx_done;
- }
- }else{
-
- /* remove hardware header */
- buf = skb_pull(skb, 1);
-
- if (!wanrouter_type_trans(skb, dev)) {
-
- /* can't decapsulate packet */
- dev_kfree_skb_any(skb);
-
- ++chan->drvstats_rx_intr.rx_intr_bfr_not_passed_to_stack;
- ++chan->ifstats.rx_errors;
- ++card->wandev.stats.rx_errors;
- goto rx_done;
- }
- skb->mac.raw = skb->data;
- }
-
-
- /* Send a packet up the IP stack */
- skb->dev->last_rx = jiffies;
- netif_rx(skb);
- ++chan->drvstats_rx_intr.rx_intr_bfr_passed_to_stack;
- ++chan->ifstats.rx_packets;
- ++card->wandev.stats.rx_packets;
-
- chan->ifstats.rx_bytes += len_incl_hdr;
- card->wandev.stats.rx_bytes += len_incl_hdr;
- }
-
-rx_done:
-
- /* Release buffer element and calculate a pointer to the next one */
- frbuf->flag = 0;
- card->rxmb = ++frbuf;
- if ((void*)frbuf > card->u.f.rxmb_last)
- card->rxmb = card->u.f.rxmb_base;
-
-}
-
-/*==================================================================
- * tx_intr: Transmit interrupt handler.
- *
- * Rationale:
- * If the board is busy transmitting, if_send() will
- * buffers a single packet and turn on
- * the tx interrupt. Tx interrupt will be called
- * by the board, once the firmware can send more
- * data. Thus, no polling is required.
- *
- * Description:
- * Tx interrupt is called for each
- * configured dlci channel. Thus:
- * 1. Obtain the netowrk interface based on the
- * dlci number.
- * 2. Check that network interface is up and
- * properly setup.
- * 3. Check for a buffered packet.
- * 4. Transmit the packet.
- * 5. If we are in WANPIPE mode, mark the
- * NET_BH handler.
- * 6. If we are in API mode, kick
- * the AF_WANPIPE socket for more data.
- *
- */
-static void tx_intr(sdla_t *card)
-{
- fr508_flags_t* flags = card->flags;
- fr_tx_buf_ctl_t* bctl;
- struct net_device* dev;
- fr_channel_t* chan;
-
- if(card->hw.type == SDLA_S514){
- bctl = (void*)(flags->tse_offs + card->hw.dpmbase);
- }else{
- bctl = (void*)(flags->tse_offs - FR_MB_VECTOR +
- card->hw.dpmbase);
- }
-
- /* Find the structure and make it unbusy */
- dev = find_channel(card, flags->dlci);
- if (dev == NULL){
- printk(KERN_INFO "NO DEV IN TX Interrupt\n");
- goto end_of_tx_intr;
- }
-
- if ((chan = dev->priv) == NULL){
- printk(KERN_INFO "NO CHAN IN TX Interrupt\n");
- goto end_of_tx_intr;
- }
-
- if(!chan->transmit_length || !chan->delay_skb) {
- printk(KERN_INFO "%s: tx int error - transmit length zero\n",
- card->wandev.name);
- goto end_of_tx_intr;
- }
-
- /* If the 'if_send()' procedure is currently checking the 'tbusy'
- status, then we cannot transmit. Instead, we configure the microcode
- so as to re-issue this transmit interrupt at a later stage.
- */
- if (test_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical)) {
-
- fr_dlci_interface_t* dlci_interface = chan->dlci_int_interface;
- bctl->flag = 0xA0;
- dlci_interface->gen_interrupt |= FR_INTR_TXRDY;
- return;
-
- }else{
- bctl->dlci = flags->dlci;
- bctl->length = chan->transmit_length+chan->fr_header_len;
- sdla_poke(&card->hw,
- fr_send_hdr(card,bctl->dlci,bctl->offset),
- chan->delay_skb->data,
- chan->delay_skb->len);
- bctl->flag = 0xC0;
-
- ++chan->ifstats.tx_packets;
- ++card->wandev.stats.tx_packets;
- chan->ifstats.tx_bytes += chan->transmit_length;
- card->wandev.stats.tx_bytes += chan->transmit_length;
-
- /* We must free an sk buffer, which we used
- * for delayed transmission; Otherwise, the sock
- * will run out of memory */
- dev_kfree_skb_any(chan->delay_skb);
-
- chan->delay_skb = NULL;
- chan->transmit_length = 0;
-
- dev->trans_start = jiffies;
-
- if (netif_queue_stopped(dev)){
- /* If using API, than wakeup socket BH handler */
- if (chan->common.usedby == API){
- netif_start_queue(dev);
- wakeup_sk_bh(dev);
- }else{
- netif_wake_queue(dev);
- }
- }
- }
-
-end_of_tx_intr:
-
- /* if any other interfaces have transmit interrupts pending,
- * do not disable the global transmit interrupt */
- if(!(-- card->u.f.tx_interrupts_pending))
- flags->imask &= ~FR_INTR_TXRDY;
-
-
-}
-
-
-/*============================================================================
- * timer_intr: Timer interrupt handler.
- *
- * Rationale:
- * All commans must be executed within the timer
- * interrupt since no two commands should execute
- * at the same time.
- *
- * Description:
- * The timer interrupt is used to:
- * 1. Processing udp calls from 'fpipemon'.
- * 2. Processing update calls from /proc file system
- * 3. Reading board-level statistics for
- * updating the proc file system.
- * 4. Sending inverse ARP request packets.
- * 5. Configure a dlci/channel.
- * 6. Unconfigure a dlci/channel. (Node only)
- */
-
-static void timer_intr(sdla_t *card)
-{
- fr508_flags_t* flags = card->flags;
-
- /* UDP Debuging: fpipemon call */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UDP) {
- if(card->u.f.udp_type == UDP_FPIPE_TYPE) {
- if(process_udp_mgmt_pkt(card)) {
- card->u.f.timer_int_enabled &=
- ~TMR_INT_ENABLED_UDP;
- }
- }
- }
-
- /* /proc update call : triggered from update() */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UPDATE) {
- fr_get_err_stats(card);
- fr_get_stats(card);
- card->u.f.update_comms_stats = 0;
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE;
- }
-
- /* Update the channel state call. This is call is
- * triggered by if_send() function */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UPDATE_STATE){
- struct net_device *dev;
- if (card->wandev.state == WAN_CONNECTED){
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)){
- fr_channel_t *chan = dev->priv;
- if (chan->common.state != WAN_CONNECTED){
- update_chan_state(dev);
- }
- }
- }
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE_STATE;
- }
-
- /* configure a dlci/channel */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_CONFIG){
- config_fr(card);
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_CONFIG;
- }
-
- /* unconfigure a dlci/channel */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UNCONFIG){
- unconfig_fr(card);
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UNCONFIG;
- }
-
-
- /* Transmit ARP packets */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_ARP){
- int i=0;
- struct net_device *dev;
-
- if (card->u.f.arp_dev == NULL)
- card->u.f.arp_dev = card->wandev.dev;
-
- dev = card->u.f.arp_dev;
-
- for (;;){
-
- fr_channel_t *chan = dev->priv;
-
- /* If the interface is brought down cancel sending In-ARPs */
- if (!(dev->flags&IFF_UP)){
- clear_bit(0,&chan->inarp_ready);
- }
-
- if (test_bit(0,&chan->inarp_ready)){
-
- if (check_tx_status(card,dev)){
- set_bit(ARP_CRIT,&card->wandev.critical);
- break;
- }
-
- if (!send_inarp_request(card,dev)){
- trigger_fr_arp(dev);
- chan->inarp_tick = jiffies;
- }
-
- clear_bit(0,&chan->inarp_ready);
- dev = move_dev_to_next(card,dev);
- break;
- }
- dev = move_dev_to_next(card,dev);
-
- if (++i == card->wandev.new_if_cnt){
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_ARP;
- break;
- }
- }
- card->u.f.arp_dev = dev;
- }
-
- if(!card->u.f.timer_int_enabled)
- flags->imask &= ~FR_INTR_TIMER;
-}
-
-
-/*============================================================================
- * spur_intr: Spurious interrupt handler.
- *
- * Description:
- * We don't know this interrupt.
- * Print a warning.
- */
-
-static void spur_intr (sdla_t* card)
-{
- if (net_ratelimit()){
- printk(KERN_INFO "%s: spurious interrupt!\n", card->devname);
- }
-}
-
-
-//FIXME: Fix the IPX in next version
-/*===========================================================================
- * Return 0 for non-IPXWAN packet
- * 1 for IPXWAN packet or IPX is not enabled!
- * FIXME: Use a IPX structure here not offsets
- */
-static int handle_IPXWAN(unsigned char *sendpacket,
- char *devname, unsigned char enable_IPX,
- unsigned long network_number)
-{
- int i;
-
- if( sendpacket[1] == 0x00 && sendpacket[2] == 0x80 &&
- sendpacket[6] == 0x81 && sendpacket[7] == 0x37) {
-
- /* It's an IPX packet */
- if (!enable_IPX){
- /* Return 1 so we don't pass it up the stack. */
- //FIXME: Take this out when IPX is fixed
- if (net_ratelimit()){
- printk (KERN_INFO
- "%s: WARNING: Unsupported IPX packet received and dropped\n",
- devname);
- }
- return 1;
- }
- } else {
- /* It's not IPX so return and pass it up the stack. */
- return 0;
- }
-
- if( sendpacket[24] == 0x90 && sendpacket[25] == 0x04){
- /* It's IPXWAN */
-
- if( sendpacket[10] == 0x02 && sendpacket[42] == 0x00){
-
- /* It's a timer request packet */
- printk(KERN_INFO "%s: Received IPXWAN Timer Request packet\n",
- devname);
-
- /* Go through the routing options and answer no to every
- * option except Unnumbered RIP/SAP
- */
- for(i = 49; sendpacket[i] == 0x00; i += 5){
- /* 0x02 is the option for Unnumbered RIP/SAP */
- if( sendpacket[i + 4] != 0x02){
- sendpacket[i + 1] = 0;
- }
- }
-
- /* Skip over the extended Node ID option */
- if( sendpacket[i] == 0x04 ){
- i += 8;
- }
-
- /* We also want to turn off all header compression opt.
- */
- for(; sendpacket[i] == 0x80 ;){
- sendpacket[i + 1] = 0;
- i += (sendpacket[i + 2] << 8) + (sendpacket[i + 3]) + 4;
- }
-
- /* Set the packet type to timer response */
- sendpacket[42] = 0x01;
-
- printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n",
- devname);
-
- } else if( sendpacket[42] == 0x02 ){
-
- /* This is an information request packet */
- printk(KERN_INFO
- "%s: Received IPXWAN Information Request packet\n",
- devname);
-
- /* Set the packet type to information response */
- sendpacket[42] = 0x03;
-
- /* Set the router name */
- sendpacket[59] = 'F';
- sendpacket[60] = 'P';
- sendpacket[61] = 'I';
- sendpacket[62] = 'P';
- sendpacket[63] = 'E';
- sendpacket[64] = '-';
- sendpacket[65] = CVHexToAscii(network_number >> 28);
- sendpacket[66] = CVHexToAscii((network_number & 0x0F000000)>> 24);
- sendpacket[67] = CVHexToAscii((network_number & 0x00F00000)>> 20);
- sendpacket[68] = CVHexToAscii((network_number & 0x000F0000)>> 16);
- sendpacket[69] = CVHexToAscii((network_number & 0x0000F000)>> 12);
- sendpacket[70] = CVHexToAscii((network_number & 0x00000F00)>> 8);
- sendpacket[71] = CVHexToAscii((network_number & 0x000000F0)>> 4);
- sendpacket[72] = CVHexToAscii(network_number & 0x0000000F);
- for(i = 73; i < 107; i+= 1)
- {
- sendpacket[i] = 0;
- }
-
- printk(KERN_INFO "%s: Sending IPXWAN Information Response packet\n",
- devname);
- } else {
-
- printk(KERN_INFO "%s: Unknown IPXWAN packet!\n",devname);
- return 0;
- }
-
- /* Set the WNodeID to our network address */
- sendpacket[43] = (unsigned char)(network_number >> 24);
- sendpacket[44] = (unsigned char)((network_number & 0x00FF0000) >> 16);
- sendpacket[45] = (unsigned char)((network_number & 0x0000FF00) >> 8);
- sendpacket[46] = (unsigned char)(network_number & 0x000000FF);
-
- return 1;
- }
-
- /* If we get here, it's an IPX-data packet so it'll get passed up the
- * stack.
- * switch the network numbers
- */
- switch_net_numbers(sendpacket, network_number ,1);
- return 0;
-}
-/*============================================================================
- * process_route
- *
- * Rationale:
- * If the interface goes down, or we receive an ARP request,
- * we have to change the network interface ip addresses.
- * This cannot be done within the interrupt.
- *
- * Description:
- *
- * This routine is called as a polling routine to dynamically
- * add/delete routes negotiated by inverse ARP. It is in this
- * "task" because we don't want routes to be added while in
- * interrupt context.
- *
- * Usage:
- * This function is called by fr_poll() polling funtion.
- */
-
-static void process_route(struct net_device *dev)
-{
- fr_channel_t *chan = dev->priv;
- sdla_t *card = chan->card;
-
- struct ifreq if_info;
- struct sockaddr_in *if_data;
- mm_segment_t fs = get_fs();
- u32 ip_tmp;
- int err;
-
-
- switch(chan->route_flag){
-
- case ADD_ROUTE:
-
- /* Set remote addresses */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
- set_fs(get_ds()); /* get user space block */
-
- if_data = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data->sin_addr.s_addr = chan->ip_remote;
- if_data->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFDSTADDR, &if_info );
-
- set_fs(fs); /* restore old block */
-
- if (err) {
- printk(KERN_INFO
- "%s: Route Add failed. Error: %d\n",
- card->devname,err);
- printk(KERN_INFO "%s: Address: %u.%u.%u.%u\n",
- chan->name, NIPQUAD(chan->ip_remote));
-
- }else {
- printk(KERN_INFO "%s: Route Added Successfully: %u.%u.%u.%u\n",
- card->devname,NIPQUAD(chan->ip_remote));
- chan->route_flag = ROUTE_ADDED;
- }
- break;
-
- case REMOVE_ROUTE:
-
- /* Set remote addresses */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
- ip_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP);
-
- set_fs(get_ds()); /* get user space block */
-
- if_data = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data->sin_addr.s_addr = 0;
- if_data->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFDSTADDR, &if_info );
-
- set_fs(fs);
-
- if (err) {
- printk(KERN_INFO
- "%s: Deleting of route failed. Error: %d\n",
- card->devname,err);
- printk(KERN_INFO "%s: Address: %u.%u.%u.%u\n",
- dev->name,NIPQUAD(chan->ip_remote) );
-
- } else {
- printk(KERN_INFO "%s: Route Removed Sucessfuly: %u.%u.%u.%u\n",
- card->devname,NIPQUAD(ip_tmp));
- chan->route_flag = NO_ROUTE;
- }
- break;
-
- } /* Case Statement */
-
-}
-
-
-
-/****** Frame Relay Firmware-Specific Functions *****************************/
-
-/*============================================================================
- * Read firmware code version.
- * o fill string str with firmware version info.
- */
-static int fr_read_version (sdla_t* card, char* str)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.command = FR_READ_CODE_VERSION;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err && str) {
- int len = mbox->cmd.length;
- memcpy(str, mbox->data, len);
- str[len] = '\0';
- }
- return err;
-}
-
-/*============================================================================
- * Set global configuration.
- */
-static int fr_configure (sdla_t* card, fr_conf_t *conf)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int dlci_num = card->u.f.dlci_num;
- int err, i;
-
- do
- {
- memcpy(mbox->data, conf, sizeof(fr_conf_t));
-
- if (dlci_num) for (i = 0; i < dlci_num; ++i)
- ((fr_conf_t*)mbox->data)->dlci[i] =
- card->u.f.node_dlci[i];
-
- mbox->cmd.command = FR_SET_CONFIG;
- mbox->cmd.length =
- sizeof(fr_conf_t) + dlci_num * sizeof(short);
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- /*NC Oct 12 2000 */
- if (err != CMD_OK){
- printk(KERN_ERR "%s: Frame Relay Configuration Failed: rc=0x%x\n",
- card->devname,err);
- }
-
- return err;
-}
-
-/*============================================================================
- * Set DLCI configuration.
- */
-static int fr_dlci_configure (sdla_t* card, fr_dlc_conf_t *conf, unsigned dlci)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memcpy(mbox->data, conf, sizeof(fr_dlc_conf_t));
- mbox->cmd.dlci = (unsigned short) dlci;
- mbox->cmd.command = FR_SET_CONFIG;
- mbox->cmd.length = sizeof(fr_dlc_conf_t);
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry--);
-
- return err;
-}
-/*============================================================================
- * Set interrupt mode.
- */
-static int fr_set_intr_mode (sdla_t* card, unsigned mode, unsigned mtu,
- unsigned short timeout)
-{
- fr_mbox_t* mbox = card->mbox;
- fr508_intr_ctl_t* ictl = (void*)mbox->data;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(ictl, 0, sizeof(fr508_intr_ctl_t));
- ictl->mode = mode;
- ictl->tx_len = mtu;
- ictl->irq = card->hw.irq;
-
- /* indicate timeout on timer */
- if (mode & 0x20) ictl->timeout = timeout;
-
- mbox->cmd.length = sizeof(fr508_intr_ctl_t);
- mbox->cmd.command = FR_SET_INTR_MODE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-/*============================================================================
- * Enable communications.
- */
-static int fr_comm_enable (sdla_t* card)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.command = FR_COMM_ENABLE;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-/*============================================================================
- * fr_comm_disable
- *
- * Warning: This functin is called by the shutdown() procedure. It is void
- * since dev->priv are has already been deallocated and no
- * error checking is possible using fr_event() function.
- */
-static void fr_comm_disable (sdla_t* card)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do {
- mbox->cmd.command = FR_SET_MODEM_STATUS;
- mbox->cmd.length = 1;
- mbox->data[0] = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry--);
-
- retry = MAX_CMD_RETRY;
-
- do
- {
- mbox->cmd.command = FR_COMM_DISABLE;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry--);
-
- return;
-}
-
-
-
-/*============================================================================
- * Get communications error statistics.
- */
-static int fr_get_err_stats (sdla_t* card)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
-
- do
- {
- mbox->cmd.command = FR_READ_ERROR_STATS;
- mbox->cmd.length = 0;
- mbox->cmd.dlci = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
- fr_comm_stat_t* stats = (void*)mbox->data;
- card->wandev.stats.rx_over_errors = stats->rx_overruns;
- card->wandev.stats.rx_crc_errors = stats->rx_bad_crc;
- card->wandev.stats.rx_missed_errors = stats->rx_aborts;
- card->wandev.stats.rx_length_errors = stats->rx_too_long;
- card->wandev.stats.tx_aborted_errors = stats->tx_aborts;
-
- }
-
- return err;
-}
-
-/*============================================================================
- * Get statistics.
- */
-static int fr_get_stats (sdla_t* card)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
-
- do
- {
- mbox->cmd.command = FR_READ_STATISTICS;
- mbox->cmd.length = 0;
- mbox->cmd.dlci = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
- fr_link_stat_t* stats = (void*)mbox->data;
- card->wandev.stats.rx_frame_errors = stats->rx_bad_format;
- card->wandev.stats.rx_dropped =
- stats->rx_dropped + stats->rx_dropped2;
- }
-
- return err;
-}
-
-/*============================================================================
- * Add DLCI(s) (Access Node only!).
- * This routine will perform the ADD_DLCIs command for the specified DLCI.
- */
-static int fr_add_dlci (sdla_t* card, int dlci)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- unsigned short* dlci_list = (void*)mbox->data;
-
- mbox->cmd.length = sizeof(short);
- dlci_list[0] = dlci;
- mbox->cmd.command = FR_ADD_DLCI;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-/*============================================================================
- * Activate DLCI(s) (Access Node only!).
- * This routine will perform the ACTIVATE_DLCIs command with a DLCI number.
- */
-static int fr_activate_dlci (sdla_t* card, int dlci)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- unsigned short* dlci_list = (void*)mbox->data;
-
- mbox->cmd.length = sizeof(short);
- dlci_list[0] = dlci;
- mbox->cmd.command = FR_ACTIVATE_DLCI;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-/*============================================================================
- * Delete DLCI(s) (Access Node only!).
- * This routine will perform the DELETE_DLCIs command with a DLCI number.
- */
-static int fr_delete_dlci (sdla_t* card, int dlci)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- unsigned short* dlci_list = (void*)mbox->data;
-
- mbox->cmd.length = sizeof(short);
- dlci_list[0] = dlci;
- mbox->cmd.command = FR_DELETE_DLCI;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-
-
-/*============================================================================
- * Issue in-channel signalling frame.
- */
-static int fr_issue_isf (sdla_t* card, int isf)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->data[0] = isf;
- mbox->cmd.length = 1;
- mbox->cmd.command = FR_ISSUE_IS_FRAME;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-
-static unsigned int fr_send_hdr (sdla_t*card, int dlci, unsigned int offset)
-{
- struct net_device *dev = find_channel(card,dlci);
- fr_channel_t *chan;
-
- if (!dev || !(chan=dev->priv))
- return offset;
-
- if (chan->fr_header_len){
- sdla_poke(&card->hw, offset, chan->fr_header, chan->fr_header_len);
- }
-
- return offset+chan->fr_header_len;
-}
-
-/*============================================================================
- * Send a frame on a selected DLCI.
- */
-static int fr_send_data_header (sdla_t* card, int dlci, unsigned char attr, int len,
- void *buf, unsigned char hdr_len)
-{
- fr_mbox_t* mbox = card->mbox + 0x800;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.dlci = dlci;
- mbox->cmd.attr = attr;
- mbox->cmd.length = len+hdr_len;
- mbox->cmd.command = FR_WRITE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
- fr_tx_buf_ctl_t* frbuf;
-
- if(card->hw.type == SDLA_S514)
- frbuf = (void*)(*(unsigned long*)mbox->data +
- card->hw.dpmbase);
- else
- frbuf = (void*)(*(unsigned long*)mbox->data -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- sdla_poke(&card->hw, fr_send_hdr(card,dlci,frbuf->offset), buf, len);
- frbuf->flag = 0x01;
- }
-
- return err;
-}
-
-static int fr_send (sdla_t* card, int dlci, unsigned char attr, int len,
- void *buf)
-{
- fr_mbox_t* mbox = card->mbox + 0x800;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.dlci = dlci;
- mbox->cmd.attr = attr;
- mbox->cmd.length = len;
- mbox->cmd.command = FR_WRITE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
- fr_tx_buf_ctl_t* frbuf;
-
- if(card->hw.type == SDLA_S514)
- frbuf = (void*)(*(unsigned long*)mbox->data +
- card->hw.dpmbase);
- else
- frbuf = (void*)(*(unsigned long*)mbox->data -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- sdla_poke(&card->hw, frbuf->offset, buf, len);
- frbuf->flag = 0x01;
- }
-
- return err;
-}
-
-
-/****** Firmware Asynchronous Event Handlers ********************************/
-
-/*============================================================================
- * Main asyncronous event/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 fr_event (sdla_t *card, int event, fr_mbox_t* mbox)
-{
- fr508_flags_t* flags = card->flags;
- char *ptr = &flags->iflag;
- int i;
-
- switch (event) {
-
- case FRRES_MODEM_FAILURE:
- return fr_modem_failure(card, mbox);
-
- case FRRES_CHANNEL_DOWN: {
- struct net_device *dev;
-
- /* Remove all routes from associated DLCI's */
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
- fr_channel_t *chan = dev->priv;
- if (chan->route_flag == ROUTE_ADDED) {
- chan->route_flag = REMOVE_ROUTE;
- }
-
- if (chan->inarp == INARP_CONFIGURED) {
- chan->inarp = INARP_REQUEST;
- }
-
- /* If the link becomes disconnected then,
- * all channels will be disconnected
- * as well.
- */
- set_chan_state(dev,WAN_DISCONNECTED);
- }
-
- wanpipe_set_state(card, WAN_DISCONNECTED);
- return 1;
- }
-
- case FRRES_CHANNEL_UP: {
- struct net_device *dev;
-
- /* FIXME: Only startup devices that are on the list */
-
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
-
- set_chan_state(dev,WAN_CONNECTED);
- }
-
- wanpipe_set_state(card, WAN_CONNECTED);
- return 1;
- }
-
- case FRRES_DLCI_CHANGE:
- return fr_dlci_change(card, mbox);
-
- case FRRES_DLCI_MISMATCH:
- printk(KERN_INFO "%s: DLCI list mismatch!\n",
- card->devname);
- return 1;
-
- case CMD_TIMEOUT:
- printk(KERN_ERR "%s: command 0x%02X timed out!\n",
- card->devname, mbox->cmd.command);
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x18 + i));
- printk(KERN_INFO "\n");
-
- break;
-
- case FRRES_DLCI_INACTIVE:
- break;
-
- case FRRES_CIR_OVERFLOW:
- break;
-
- case FRRES_BUFFER_OVERFLOW:
- break;
-
- default:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n"
- , card->devname, mbox->cmd.command, event);
- }
-
- return 0;
-}
-
-/*============================================================================
- * Handle modem error.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int fr_modem_failure (sdla_t *card, fr_mbox_t* mbox)
-{
- printk(KERN_INFO "%s: physical link down! (modem error 0x%02X)\n",
- card->devname, mbox->data[0]);
-
- switch (mbox->cmd.command){
- case FR_WRITE:
-
- case FR_READ:
- return 0;
- }
-
- return 1;
-}
-
-/*============================================================================
- * Handle DLCI status change.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int fr_dlci_change (sdla_t *card, fr_mbox_t* mbox)
-{
- dlci_status_t* status = (void*)mbox->data;
- int cnt = mbox->cmd.length / sizeof(dlci_status_t);
- fr_channel_t *chan;
- struct net_device* dev2;
-
-
- for (; cnt; --cnt, ++status) {
-
- unsigned short dlci= status->dlci;
- struct net_device* dev = find_channel(card, dlci);
-
- if (dev == NULL){
- printk(KERN_INFO
- "%s: CPE contains unconfigured DLCI= %d\n",
- card->devname, dlci);
-
- printk(KERN_INFO
- "%s: unconfigured DLCI %d reported by network\n"
- , card->devname, dlci);
-
- }else{
- if (status->state == FR_LINK_INOPER) {
- printk(KERN_INFO
- "%s: DLCI %u is inactive!\n",
- card->devname, dlci);
-
- if (dev && netif_running(dev))
- set_chan_state(dev, WAN_DISCONNECTED);
- }
-
- if (status->state & FR_DLCI_DELETED) {
-
- printk(KERN_INFO
- "%s: DLCI %u has been deleted!\n",
- card->devname, dlci);
-
- if (dev && netif_running(dev)){
-
- fr_channel_t *chan = dev->priv;
-
- if (chan->route_flag == ROUTE_ADDED) {
- chan->route_flag = REMOVE_ROUTE;
- /* The state change will trigger
- * the fr polling routine */
- }
-
- if (chan->inarp == INARP_CONFIGURED) {
- chan->inarp = INARP_REQUEST;
- }
-
- set_chan_state(dev, WAN_DISCONNECTED);
- }
-
- } else if (status->state & FR_DLCI_ACTIVE) {
-
- chan = dev->priv;
-
- /* This flag is used for configuring specific
- DLCI(s) when they become active.
- */
- chan->dlci_configured = DLCI_CONFIG_PENDING;
-
- set_chan_state(dev, WAN_CONNECTED);
-
- }
- }
- }
-
- for (dev2 = card->wandev.dev; dev2;
- dev2 = *((struct net_device **)dev2->priv)){
-
- chan = dev2->priv;
-
- if (chan->dlci_configured == DLCI_CONFIG_PENDING) {
- if (fr_init_dlci(card, chan)){
- return 1;
- }
- }
-
- }
- return 1;
-}
-
-
-static int fr_init_dlci (sdla_t *card, fr_channel_t *chan)
-{
- fr_dlc_conf_t cfg;
-
- memset(&cfg, 0, sizeof(cfg));
-
- if ( chan->cir_status == CIR_DISABLED) {
-
- cfg.cir_fwd = cfg.cir_bwd = 16;
- cfg.bc_fwd = cfg.bc_bwd = 16;
- cfg.conf_flags = 0x0001;
-
- }else if (chan->cir_status == CIR_ENABLED) {
-
- cfg.cir_fwd = cfg.cir_bwd = chan->cir;
- cfg.bc_fwd = cfg.bc_bwd = chan->bc;
- cfg.be_fwd = cfg.be_bwd = chan->be;
- cfg.conf_flags = 0x0000;
- }
-
- if (fr_dlci_configure( card, &cfg , chan->dlci)){
- printk(KERN_INFO
- "%s: DLCI Configure failed for %d\n",
- card->devname, chan->dlci);
- return 1;
- }
-
- chan->dlci_configured = DLCI_CONFIGURED;
-
- /* Read the interface byte mapping into the channel
- * structure.
- */
- read_DLCI_IB_mapping( card, chan );
-
- return 0;
-}
-/******* Miscellaneous ******************************************************/
-
-/*============================================================================
- * Update channel state.
- */
-static int update_chan_state(struct net_device* dev)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.command = FR_LIST_ACTIVE_DLCI;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
-
- unsigned short* list = (void*)mbox->data;
- int cnt = mbox->cmd.length / sizeof(short);
-
- err=1;
-
- for (; cnt; --cnt, ++list) {
-
- if (*list == chan->dlci) {
- set_chan_state(dev, WAN_CONNECTED);
-
-
- /* May 23 2000. NC
- * When a dlci is added or restarted,
- * the dlci_int_interface pointer must
- * be reinitialized. */
- if (!chan->dlci_int_interface){
- err=fr_init_dlci (card,chan);
- }
- break;
- }
- }
- }
-
- return err;
-}
-
-/*============================================================================
- * Set channel state.
- */
-static void set_chan_state(struct net_device* dev, int state)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
-
- if (chan->common.state != state) {
-
- switch (state) {
-
- case WAN_CONNECTED:
- printk(KERN_INFO
- "%s: Interface %s: DLCI %d connected\n",
- card->devname, dev->name, chan->dlci);
-
- /* If the interface was previoulsy down,
- * bring it up, since the channel is active */
-
- trigger_fr_poll (dev);
- trigger_fr_arp (dev);
- break;
-
- case WAN_CONNECTING:
- printk(KERN_INFO
- "%s: Interface %s: DLCI %d connecting\n",
- card->devname, dev->name, chan->dlci);
- break;
-
- case WAN_DISCONNECTED:
- printk (KERN_INFO
- "%s: Interface %s: DLCI %d disconnected!\n",
- card->devname, dev->name, chan->dlci);
-
- /* If the interface is up, bring it down,
- * since the channel is now disconnected */
- trigger_fr_poll (dev);
- break;
- }
-
- chan->common.state = state;
- }
-
- chan->state_tick = jiffies;
-}
-
-/*============================================================================
- * Find network device by its channel number.
- *
- * We need this critical flag because we change
- * the dlci_to_dev_map outside the interrupt.
- *
- * NOTE: del_if() functions updates this array, it uses
- * the spin locks to avoid corruption.
- */
-static struct net_device* find_channel(sdla_t* card, unsigned dlci)
-{
- if(dlci > HIGHEST_VALID_DLCI)
- return NULL;
-
- return(card->u.f.dlci_to_dev_map[dlci]);
-}
-
-/*============================================================================
- * Check to see if a frame can be sent. If no transmit buffers available,
- * enable transmit interrupts.
- *
- * Return: 1 - Tx buffer(s) available
- * 0 - no buffers available
- */
-static int is_tx_ready (sdla_t* card, fr_channel_t* chan)
-{
- unsigned char sb;
-
- if(card->hw.type == SDLA_S514)
- return 1;
-
- sb = inb(card->hw.port);
- if (sb & 0x02)
- return 1;
-
- return 0;
-}
-
-/*============================================================================
- * Convert decimal string to unsigned integer.
- * If len != 0 then only 'len' characters of the string are converted.
- */
-static unsigned int dec_to_uint (unsigned char* str, int len)
-{
- unsigned val;
-
- if (!len)
- len = strlen(str);
-
- for (val = 0; len && isdigit(*str); ++str, --len)
- val = (val * 10) + (*str - (unsigned)'0');
-
- return val;
-}
-
-
-
-/*=============================================================================
- * Store a UDP management packet for later processing.
- */
-
-static int store_udp_mgmt_pkt(int udp_type, char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, int dlci)
-{
- int udp_pkt_stored = 0;
-
- struct net_device *dev = find_channel(card, dlci);
- fr_channel_t *chan;
-
- if (!dev || !(chan=dev->priv))
- return 1;
-
- if(!card->u.f.udp_pkt_lgth && (skb->len <= MAX_LGTH_UDP_MGNT_PKT)){
- card->u.f.udp_pkt_lgth = skb->len + chan->fr_header_len;
- card->u.f.udp_type = udp_type;
- card->u.f.udp_pkt_src = udp_pkt_src;
- card->u.f.udp_dlci = dlci;
- memcpy(card->u.f.udp_pkt_data, skb->data, skb->len);
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UDP;
- udp_pkt_stored = 1;
-
- }else{
- printk(KERN_INFO "ERROR: UDP packet not stored for DLCI %d\n",
- dlci);
- }
-
- 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 call of type FPIPE8ND
- */
-static int process_udp_mgmt_pkt(sdla_t* card)
-{
-
- int c_retry = MAX_CMD_RETRY;
- unsigned char *buf;
- unsigned char frames;
- unsigned int len;
- unsigned short buffer_length;
- struct sk_buff *new_skb;
- fr_mbox_t* mbox = card->mbox;
- int err;
- struct timeval tv;
- int udp_mgmt_req_valid = 1;
- struct net_device* dev;
- fr_channel_t* chan;
- fr_udp_pkt_t *fr_udp_pkt;
- unsigned short num_trc_els;
- fr_trc_el_t* ptr_trc_el;
- fr_trc_el_t trc_el;
- fpipemon_trc_t* fpipemon_trc;
-
- char udp_pkt_src = card->u.f.udp_pkt_src;
- int dlci = card->u.f.udp_dlci;
-
- /* Find network interface for this packet */
- dev = find_channel(card, dlci);
- if (!dev){
- card->u.f.udp_pkt_lgth = 0;
- return 1;
- }
- if ((chan = dev->priv) == NULL){
- card->u.f.udp_pkt_lgth = 0;
- return 1;
- }
-
- /* If the UDP packet is from the network, we are going to have to
- transmit a response. Before doing so, we must check to see that
- we are not currently transmitting a frame (in 'if_send()') and
- that we are not already in a 'delayed transmit' state.
- */
- if(udp_pkt_src == UDP_PKT_FRM_NETWORK) {
- if (check_tx_status(card,dev)){
- card->u.f.udp_pkt_lgth = 0;
- return 1;
- }
- }
-
- fr_udp_pkt = (fr_udp_pkt_t *)card->u.f.udp_pkt_data;
-
- if(udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- switch(fr_udp_pkt->cblock.command) {
-
- case FR_READ_MODEM_STATUS:
- case FR_READ_STATUS:
- case FPIPE_ROUTER_UP_TIME:
- case FR_READ_ERROR_STATS:
- case FPIPE_DRIVER_STAT_GEN:
- case FR_READ_STATISTICS:
- case FR_READ_ADD_DLC_STATS:
- case FR_READ_CONFIG:
- case FR_READ_CODE_VERSION:
- udp_mgmt_req_valid = 1;
- break;
- default:
- udp_mgmt_req_valid = 0;
- break;
- }
- }
-
- if(!udp_mgmt_req_valid) {
- /* set length to 0 */
- fr_udp_pkt->cblock.length = 0;
- /* set return code */
- fr_udp_pkt->cblock.result = 0xCD;
-
- chan->drvstats_gen.UDP_PIPE_mgmt_direction_err ++;
-
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Warning, Illegal UDP command attempted from network: %x\n",
- card->devname,fr_udp_pkt->cblock.command);
- }
-
- } else {
-
- switch(fr_udp_pkt->cblock.command) {
-
- case FPIPE_ENABLE_TRACING:
- if(!card->TracingEnabled) {
- do {
- mbox->cmd.command = FR_SET_TRACE_CONFIG;
- mbox->cmd.length = 1;
- mbox->cmd.dlci = 0x00;
- mbox->data[0] = fr_udp_pkt->data[0] |
- RESET_TRC;
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
- } while (err && c_retry-- && fr_event(card, err,
- mbox));
-
- if(err) {
- card->TracingEnabled = 0;
- /* set the return code */
- fr_udp_pkt->cblock.result =
- mbox->cmd.result;
- mbox->cmd.length = 0;
- break;
- }
-
- sdla_peek(&card->hw, NO_TRC_ELEMENTS_OFF,
- &num_trc_els, 2);
- sdla_peek(&card->hw, BASE_TRC_ELEMENTS_OFF,
- &card->u.f.trc_el_base, 4);
- card->u.f.curr_trc_el = card->u.f.trc_el_base;
- card->u.f.trc_el_last = card->u.f.curr_trc_el +
- ((num_trc_els - 1) *
- sizeof(fr_trc_el_t));
-
- /* Calculate the maximum trace data area in */
- /* the UDP packet */
- card->u.f.trc_bfr_space=(MAX_LGTH_UDP_MGNT_PKT -
- //sizeof(fr_encap_hdr_t) -
- sizeof(ip_pkt_t) -
- sizeof(udp_pkt_t) -
- sizeof(wp_mgmt_t) -
- sizeof(cblock_t));
-
- /* set return code */
- fr_udp_pkt->cblock.result = 0;
-
- } else {
- /* set return code to line trace already
- enabled */
- fr_udp_pkt->cblock.result = 1;
- }
-
- mbox->cmd.length = 0;
- card->TracingEnabled = 1;
- break;
-
-
- case FPIPE_DISABLE_TRACING:
- if(card->TracingEnabled) {
-
- do {
- mbox->cmd.command = FR_SET_TRACE_CONFIG;
- mbox->cmd.length = 1;
- mbox->cmd.dlci = 0x00;
- mbox->data[0] = ~ACTIVATE_TRC;
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
- } while (err && c_retry-- && fr_event(card, err, mbox));
- }
-
- /* set return code */
- fr_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 0;
- card->TracingEnabled = 0;
- break;
-
- case FPIPE_GET_TRACE_INFO:
-
- /* Line trace cannot be performed on the 502 */
- if(!card->TracingEnabled) {
- /* set return code */
- fr_udp_pkt->cblock.result = 1;
- mbox->cmd.length = 0;
- break;
- }
-
- ptr_trc_el = (void *)card->u.f.curr_trc_el;
-
- buffer_length = 0;
- fr_udp_pkt->data[0x00] = 0x00;
-
- for(frames = 0; frames < MAX_FRMS_TRACED; frames ++) {
-
- sdla_peek(&card->hw, (unsigned long)ptr_trc_el,
- (void *)&trc_el.flag,
- sizeof(fr_trc_el_t));
- if(trc_el.flag == 0x00) {
- break;
- }
- if((card->u.f.trc_bfr_space - buffer_length)
- < sizeof(fpipemon_trc_hdr_t)) {
- fr_udp_pkt->data[0x00] |= MORE_TRC_DATA;
- break;
- }
-
- fpipemon_trc =
- (fpipemon_trc_t *)&fr_udp_pkt->data[buffer_length];
- fpipemon_trc->fpipemon_trc_hdr.status =
- trc_el.attr;
- fpipemon_trc->fpipemon_trc_hdr.tmstamp =
- trc_el.tmstamp;
- fpipemon_trc->fpipemon_trc_hdr.length =
- trc_el.length;
-
- if(!trc_el.offset || !trc_el.length) {
-
- fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x00;
-
- }else if((trc_el.length + sizeof(fpipemon_trc_hdr_t) + 1) >
- (card->u.f.trc_bfr_space - buffer_length)){
-
- fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x00;
- fr_udp_pkt->data[0x00] |= MORE_TRC_DATA;
-
- }else {
- fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x01;
- sdla_peek(&card->hw, trc_el.offset,
- fpipemon_trc->data,
- trc_el.length);
- }
-
- trc_el.flag = 0x00;
- sdla_poke(&card->hw, (unsigned long)ptr_trc_el,
- &trc_el.flag, 1);
-
- ptr_trc_el ++;
- if((void *)ptr_trc_el > card->u.f.trc_el_last)
- ptr_trc_el = (void*)card->u.f.trc_el_base;
-
- buffer_length += sizeof(fpipemon_trc_hdr_t);
- if(fpipemon_trc->fpipemon_trc_hdr.data_passed) {
- buffer_length += trc_el.length;
- }
-
- if(fr_udp_pkt->data[0x00] & MORE_TRC_DATA) {
- break;
- }
- }
-
- if(frames == MAX_FRMS_TRACED) {
- fr_udp_pkt->data[0x00] |= MORE_TRC_DATA;
- }
-
- card->u.f.curr_trc_el = (void *)ptr_trc_el;
-
- /* set the total number of frames passed */
- fr_udp_pkt->data[0x00] |=
- ((frames << 1) & (MAX_FRMS_TRACED << 1));
-
- /* set the data length and return code */
- fr_udp_pkt->cblock.length = mbox->cmd.length = buffer_length;
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_FT1_READ_STATUS:
- sdla_peek(&card->hw, 0xF020,
- &fr_udp_pkt->data[0x00] , 2);
- fr_udp_pkt->cblock.length = mbox->cmd.length = 2;
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_FLUSH_DRIVER_STATS:
- init_chan_statistics(chan);
- init_global_statistics(card);
- mbox->cmd.length = 0;
- break;
-
- case FPIPE_ROUTER_UP_TIME:
- do_gettimeofday(&tv);
- chan->router_up_time = tv.tv_sec -
- chan->router_start_time;
- *(unsigned long *)&fr_udp_pkt->data =
- chan->router_up_time;
- mbox->cmd.length = fr_udp_pkt->cblock.length = 4;
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_DRIVER_STAT_IFSEND:
- memcpy(fr_udp_pkt->data,
- &chan->drvstats_if_send.if_send_entry,
- sizeof(if_send_stat_t));
- mbox->cmd.length = fr_udp_pkt->cblock.length =sizeof(if_send_stat_t);
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_DRIVER_STAT_INTR:
-
- memcpy(fr_udp_pkt->data,
- &card->statistics.isr_entry,
- sizeof(global_stats_t));
-
- memcpy(&fr_udp_pkt->data[sizeof(global_stats_t)],
- &chan->drvstats_rx_intr.rx_intr_no_socket,
- sizeof(rx_intr_stat_t));
-
- mbox->cmd.length = fr_udp_pkt->cblock.length =
- sizeof(global_stats_t) +
- sizeof(rx_intr_stat_t);
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_DRIVER_STAT_GEN:
- memcpy(fr_udp_pkt->data,
- &chan->drvstats_gen.UDP_PIPE_mgmt_kmalloc_err,
- sizeof(pipe_mgmt_stat_t));
-
- memcpy(&fr_udp_pkt->data[sizeof(pipe_mgmt_stat_t)],
- &card->statistics, sizeof(global_stats_t));
-
- mbox->cmd.length = fr_udp_pkt->cblock.length = sizeof(global_stats_t)+
- sizeof(rx_intr_stat_t);
- fr_udp_pkt->cblock.result = 0;
- break;
-
-
- case FR_FT1_STATUS_CTRL:
- if(fr_udp_pkt->data[0] == 1) {
- if(rCount++ != 0 ){
- fr_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
-
- /* Disable FT1 MONITOR STATUS */
- if(fr_udp_pkt->data[0] == 0) {
- if( --rCount != 0) {
- fr_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
- goto udp_mgmt_dflt;
-
-
- default:
-udp_mgmt_dflt:
- do {
- memcpy(&mbox->cmd,
- &fr_udp_pkt->cblock.command,
- sizeof(fr_cmd_t));
- if(mbox->cmd.length) {
- memcpy(&mbox->data,
- (char *)fr_udp_pkt->data,
- mbox->cmd.length);
- }
-
- err = sdla_exec(mbox) ? mbox->cmd.result :
- CMD_TIMEOUT;
- } while (err && c_retry-- && fr_event(card, err, mbox));
-
- if(!err)
- chan->drvstats_gen.
- UDP_PIPE_mgmt_adptr_cmnd_OK ++;
- else
- chan->drvstats_gen.
- UDP_PIPE_mgmt_adptr_cmnd_timeout ++;
-
- /* copy the result back to our buffer */
- memcpy(&fr_udp_pkt->cblock.command,
- &mbox->cmd, sizeof(fr_cmd_t));
-
- if(mbox->cmd.length) {
- memcpy(&fr_udp_pkt->data,
- &mbox->data, mbox->cmd.length);
- }
- }
- }
-
- /* Fill UDP TTL */
- fr_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
- len = reply_udp(card->u.f.udp_pkt_data, mbox->cmd.length);
-
- if(udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- chan->fr_header_len=2;
- chan->fr_header[0]=Q922_UI;
- chan->fr_header[1]=NLPID_IP;
-
- err = fr_send_data_header(card, dlci, 0, len,
- card->u.f.udp_pkt_data,chan->fr_header_len);
- if (err){
- chan->drvstats_gen.UDP_PIPE_mgmt_adptr_send_passed ++;
- }else{
- chan->drvstats_gen.UDP_PIPE_mgmt_adptr_send_failed ++;
- }
-
- } else {
- /* Allocate socket buffer */
- if((new_skb = dev_alloc_skb(len)) != NULL) {
-
- /* copy data into new_skb */
- buf = skb_put(new_skb, len);
- memcpy(buf, card->u.f.udp_pkt_data, len);
-
- chan->drvstats_gen.
- UDP_PIPE_mgmt_passed_to_stack ++;
- new_skb->dev = dev;
- new_skb->protocol = htons(ETH_P_IP);
- new_skb->mac.raw = new_skb->data;
- netif_rx(new_skb);
-
- } else {
- chan->drvstats_gen.UDP_PIPE_mgmt_no_socket ++;
- printk(KERN_INFO
- "%s: UDP mgmt cmnd, no socket buffers available!\n",
- card->devname);
- }
- }
-
- card->u.f.udp_pkt_lgth = 0;
-
- return 1;
-}
-
-/*==============================================================================
- * Send Inverse ARP Request
- */
-
-int send_inarp_request(sdla_t *card, struct net_device *dev)
-{
- int err=0;
-
- arphdr_1490_t *ArpPacket;
- arphdr_fr_t *arphdr;
- fr_channel_t *chan = dev->priv;
- struct in_device *in_dev;
-
- in_dev = dev->ip_ptr;
-
- if(in_dev != NULL ) {
-
- ArpPacket = kmalloc(sizeof(arphdr_1490_t) + sizeof(arphdr_fr_t), GFP_ATOMIC);
- /* SNAP Header indicating ARP */
- ArpPacket->control = 0x03;
- ArpPacket->pad = 0x00;
- ArpPacket->NLPID = 0x80;
- ArpPacket->OUI[0] = 0;
- ArpPacket->OUI[1] = 0;
- ArpPacket->OUI[2] = 0;
- ArpPacket->PID = 0x0608;
-
- arphdr = (arphdr_fr_t *)(ArpPacket + 1); // Go to ARP Packet
-
- /* InARP request */
- arphdr->ar_hrd = 0x0F00; /* Frame Relay HW type */
- arphdr->ar_pro = 0x0008; /* IP Protocol */
- arphdr->ar_hln = 2; /* HW addr length */
- arphdr->ar_pln = 4; /* IP addr length */
- arphdr->ar_op = htons(0x08); /* InARP Request */
- arphdr->ar_sha = 0; /* src HW DLCI - Doesn't matter */
- if(in_dev->ifa_list != NULL)
- arphdr->ar_sip = in_dev->ifa_list->ifa_local; /* Local Address */else
- arphdr->ar_sip = 0;
- arphdr->ar_tha = 0; /* dst HW DLCI - Doesn't matter */
- arphdr->ar_tip = 0; /* Remote Address -- what we want */
-
- err = fr_send(card, chan->dlci, 0, sizeof(arphdr_1490_t) + sizeof(arphdr_fr_t),
- (void *)ArpPacket);
-
- if (!err){
- printk(KERN_INFO "\n%s: Sending InARP request on DLCI %d.\n",
- card->devname, chan->dlci);
- clear_bit(ARP_CRIT,&card->wandev.critical);
- }
-
- kfree(ArpPacket);
- }else{
- printk(KERN_INFO "%s: INARP ERROR: %s doesn't have a local IP address!\n",
- card->devname,dev->name);
- return 1;
- }
-
- return 0;
-}
-
-
-/*==============================================================================
- * Check packet for ARP Type
- */
-
-int is_arp(void *buf)
-{
- arphdr_1490_t *arphdr = (arphdr_1490_t *)buf;
-
- if (arphdr->pad == 0x00 &&
- arphdr->NLPID == 0x80 &&
- arphdr->PID == 0x0608)
- return 1;
- else return 0;
-}
-
-/*==============================================================================
- * Process ARP Packet Type
- */
-
-int process_ARP(arphdr_1490_t *ArpPacket, sdla_t *card, struct net_device* dev)
-{
-
-
- arphdr_fr_t *arphdr = (arphdr_fr_t *)(ArpPacket + 1); /* Skip header */
- fr_rx_buf_ctl_t* frbuf = card->rxmb;
- struct in_device *in_dev;
- fr_channel_t *chan = dev->priv;
-
- /* Before we transmit ARP packet, we must check
- * to see that we are not currently transmitting a
- * frame (in 'if_send()') and that we are not
- * already in a 'delayed transmit' state. */
- if (check_tx_status(card,dev)){
- if (net_ratelimit()){
- printk(KERN_INFO "%s: Disabling comminication to process ARP\n",
- card->devname);
- }
- set_bit(ARP_CRIT,&card->wandev.critical);
- return 0;
- }
-
- in_dev = dev->ip_ptr;
-
- /* Check that IP addresses exist for our network address */
- if (in_dev == NULL || in_dev->ifa_list == NULL)
- return -1;
-
- switch (ntohs(arphdr->ar_op)) {
-
- case 0x08: // Inverse ARP request -- Send Reply, add route.
-
- /* Check for valid Address */
- printk(KERN_INFO "%s: Recvd PtP addr -InArp Req: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(arphdr->ar_sip));
-
-
- /* Check that the network address is the same as ours, only
- * if the netowrk mask is not 255.255.255.255. Otherwise
- * this check would not make sense */
-
- if (in_dev->ifa_list->ifa_mask != 0xFFFFFFFF &&
- (in_dev->ifa_list->ifa_mask & arphdr->ar_sip) !=
- (in_dev->ifa_list->ifa_mask & in_dev->ifa_list->ifa_local)){
- printk(KERN_INFO
- "%s: Invalid PtP address. %u.%u.%u.%u InARP ignored.\n",
- card->devname,NIPQUAD(arphdr->ar_sip));
-
- printk(KERN_INFO "%s: mask %u.%u.%u.%u\n",
- card->devname, NIPQUAD(in_dev->ifa_list->ifa_mask));
- printk(KERN_INFO "%s: local %u.%u.%u.%u\n",
- card->devname,NIPQUAD(in_dev->ifa_list->ifa_local));
- return -1;
- }
-
- if (in_dev->ifa_list->ifa_local == arphdr->ar_sip){
- printk(KERN_INFO
- "%s: Local addr = PtP addr. InARP ignored.\n",
- card->devname);
- return -1;
- }
-
- arphdr->ar_op = htons(0x09); /* InARP Reply */
-
- /* Set addresses */
- arphdr->ar_tip = arphdr->ar_sip;
- arphdr->ar_sip = in_dev->ifa_list->ifa_local;
-
- chan->ip_local = in_dev->ifa_list->ifa_local;
- chan->ip_remote = arphdr->ar_sip;
-
- fr_send(card, frbuf->dlci, 0, frbuf->length, (void *)ArpPacket);
-
- if (test_bit(ARP_CRIT,&card->wandev.critical)){
- if (net_ratelimit()){
- printk(KERN_INFO "%s: ARP Processed Enabling Communication!\n",
- card->devname);
- }
- }
- clear_bit(ARP_CRIT,&card->wandev.critical);
-
- chan->ip_local = in_dev->ifa_list->ifa_local;
- chan->ip_remote = arphdr->ar_sip;
-
- /* Add Route Flag */
- /* The route will be added in the polling routine so
- that it is not interrupt context. */
-
- chan->route_flag = ADD_ROUTE;
- trigger_fr_poll (dev);
-
- break;
-
- case 0x09: // Inverse ARP reply
-
- /* Check for valid Address */
- printk(KERN_INFO "%s: Recvd PtP addr %u.%u.%u.%u -InArp Reply\n",
- card->devname, NIPQUAD(arphdr->ar_sip));
-
-
- /* Compare network addresses, only if network mask
- * is not 255.255.255.255 It would not make sense
- * to perform this test if the mask was all 1's */
-
- if (in_dev->ifa_list->ifa_mask != 0xffffffff &&
- (in_dev->ifa_list->ifa_mask & arphdr->ar_sip) !=
- (in_dev->ifa_list->ifa_mask & in_dev->ifa_list->ifa_local)) {
-
- printk(KERN_INFO "%s: Invalid PtP address. InARP ignored.\n",
- card->devname);
- return -1;
- }
-
- /* Make sure that the received IP address is not
- * the same as our own local address */
- if (in_dev->ifa_list->ifa_local == arphdr->ar_sip) {
- printk(KERN_INFO "%s: Local addr = PtP addr. InARP ignored.\n",
- card->devname);
- return -1;
- }
-
- chan->ip_local = in_dev->ifa_list->ifa_local;
- chan->ip_remote = arphdr->ar_sip;
-
- /* Add Route Flag */
- /* The route will be added in the polling routine so
- that it is not interrupt context. */
-
- chan->route_flag = ADD_ROUTE;
- chan->inarp = INARP_CONFIGURED;
- trigger_fr_poll(dev);
-
- break;
- default:
- break; // ARP's and RARP's -- Shouldn't happen.
- }
-
- return 0;
-}
-
-
-/*============================================================
- * trigger_fr_arp
- *
- * Description:
- * Add an fr_arp() task into a arp
- * timer handler for a specific dlci/interface.
- * This will kick the fr_arp() routine
- * within the specified time interval.
- *
- * Usage:
- * This timer is used to send ARP requests at
- * certain time intervals.
- * Called by an interrupt to request an action
- * at a later date.
- */
-
-static void trigger_fr_arp(struct net_device *dev)
-{
- fr_channel_t* chan = dev->priv;
-
- mod_timer(&chan->fr_arp_timer, jiffies + chan->inarp_interval * HZ);
- return;
-}
-
-
-
-/*==============================================================================
- * ARP Request Action
- *
- * This funciton is called by timer interrupt to send an arp request
- * to the remote end.
- */
-
-static void fr_arp (unsigned long data)
-{
- struct net_device *dev = (struct net_device *)data;
- fr_channel_t *chan = dev->priv;
- volatile sdla_t *card = chan->card;
- fr508_flags_t* flags = card->flags;
-
- /* Send ARP packets for all devs' until
- * ARP state changes to CONFIGURED */
-
- if (chan->inarp == INARP_REQUEST &&
- chan->common.state == WAN_CONNECTED &&
- card->wandev.state == WAN_CONNECTED){
- set_bit(0,&chan->inarp_ready);
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_ARP;
- flags->imask |= FR_INTR_TIMER;
- }
-
- return;
-}
-
-
-/*==============================================================================
- * Perform the Interrupt Test by running the READ_CODE_VERSION command MAX_INTR_
- * TEST_COUNTER times.
- */
-static int intr_test( sdla_t* card )
-{
- fr_mbox_t* mb = card->mbox;
- int err,i;
-
- err = fr_set_intr_mode(card, FR_INTR_READY, card->wandev.mtu, 0 );
-
- if (err == CMD_OK) {
-
- for ( i = 0; i < MAX_INTR_TEST_COUNTER; i++ ) {
- /* Run command READ_CODE_VERSION */
- mb->cmd.length = 0;
- mb->cmd.command = FR_READ_CODE_VERSION;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- fr_event(card, err, mb);
- }
-
- } else {
- return err;
- }
-
- err = fr_set_intr_mode( card, 0, card->wandev.mtu, 0 );
-
- if( err != CMD_OK )
- return err;
-
- return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. FPIPE8ND ?
- */
-static int udp_pkt_type( struct sk_buff *skb, sdla_t* card )
-{
- fr_udp_pkt_t *fr_udp_pkt = (fr_udp_pkt_t *)skb->data;
-
- /* Quick HACK */
-
-
- if((fr_udp_pkt->ip_pkt.protocol == UDPMGMT_UDP_PROTOCOL) &&
- (fr_udp_pkt->ip_pkt.ver_inet_hdr_length == 0x45) &&
- (fr_udp_pkt->udp_pkt.udp_dst_port ==
- ntohs(card->wandev.udp_port)) &&
- (fr_udp_pkt->wp_mgmt.request_reply ==
- UDPMGMT_REQUEST)) {
- if(!strncmp(fr_udp_pkt->wp_mgmt.signature,
- UDPMGMT_FPIPE_SIGNATURE, 8)){
- return UDP_FPIPE_TYPE;
- }
- }
- return UDP_INVALID_TYPE;
-}
-
-
-/*==============================================================================
- * Initializes the Statistics values in the fr_channel structure.
- */
-void init_chan_statistics( fr_channel_t* chan)
-{
- memset(&chan->drvstats_if_send.if_send_entry, 0,
- sizeof(if_send_stat_t));
- memset(&chan->drvstats_rx_intr.rx_intr_no_socket, 0,
- sizeof(rx_intr_stat_t));
- memset(&chan->drvstats_gen.UDP_PIPE_mgmt_kmalloc_err, 0,
- sizeof(pipe_mgmt_stat_t));
-}
-
-/*==============================================================================
- * Initializes the Statistics values in the Sdla_t structure.
- */
-void init_global_statistics( sdla_t* card )
-{
- /* Intialize global statistics for a card */
- memset(&card->statistics.isr_entry, 0, sizeof(global_stats_t));
-}
-
-static void read_DLCI_IB_mapping( sdla_t* card, fr_channel_t* chan )
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- dlci_IB_mapping_t* result;
- int err, counter, found;
-
- do {
- mbox->cmd.command = FR_READ_DLCI_IB_MAPPING;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if( mbox->cmd.result != 0){
- printk(KERN_INFO "%s: Read DLCI IB Mapping failed\n",
- chan->name);
- }
-
- counter = mbox->cmd.length / sizeof(dlci_IB_mapping_t);
- result = (void *)mbox->data;
-
- found = 0;
- for (; counter; --counter, ++result) {
- if ( result->dlci == chan->dlci ) {
- chan->IB_addr = result->addr_value;
- if(card->hw.type == SDLA_S514){
- chan->dlci_int_interface =
- (void*)(card->hw.dpmbase +
- chan->IB_addr);
- }else{
- chan->dlci_int_interface =
- (void*)(card->hw.dpmbase +
- (chan->IB_addr & 0x00001FFF));
-
- }
- found = 1;
- break;
- }
- }
- if (!found)
- printk( KERN_INFO "%s: DLCI %d not found by IB MAPPING cmd\n",
- card->devname, chan->dlci);
-}
-
-
-
-void s508_s514_lock(sdla_t *card, unsigned long *smp_flags)
-{
- if (card->hw.type != SDLA_S514){
-
- spin_lock_irqsave(&card->wandev.lock, *smp_flags);
- }else{
- spin_lock(&card->u.f.if_send_lock);
- }
- return;
-}
-
-
-void s508_s514_unlock(sdla_t *card, unsigned long *smp_flags)
-{
- if (card->hw.type != SDLA_S514){
-
- spin_unlock_irqrestore (&card->wandev.lock, *smp_flags);
- }else{
- spin_unlock(&card->u.f.if_send_lock);
- }
- return;
-}
-
-
-
-/*----------------------------------------------------------------------
- RECEIVE INTERRUPT: BOTTOM HALF HANDLERS
- ----------------------------------------------------------------------*/
-
-
-/*========================================================
- * bh_enqueue
- *
- * Description:
- * Insert a received packet into a circular
- * rx queue. This packet will be picked up
- * by fr_bh() and sent up the stack to the
- * user.
- *
- * Usage:
- * This function is called by rx interrupt,
- * in API mode.
- *
- */
-
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb)
-{
- /* Check for full */
- fr_channel_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
-
- if (atomic_read(&chan->bh_buff_used) == MAX_BH_BUFF){
- ++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-1)){
- chan->bh_write=0;
- }else{
- ++chan->bh_write;
- }
-
- atomic_inc(&chan->bh_buff_used);
-
- return 0;
-}
-
-
-/*========================================================
- * trigger_fr_bh
- *
- * Description:
- * Kick the fr_bh() handler
- *
- * Usage:
- * rx interrupt calls this function during
- * the API mode.
- */
-
-static void trigger_fr_bh (fr_channel_t *chan)
-{
- if (!test_and_set_bit(0,&chan->tq_working)){
- wanpipe_queue_work(&chan->common.wanpipe_work);
- }
-}
-
-
-/*========================================================
- * fr_bh
- *
- * Description:
- * Frame relay receive BH handler.
- * Dequeue data from the BH circular
- * buffer and pass it up the API sock.
- *
- * Rationale:
- * This fuction is used to offload the
- * rx_interrupt during API operation mode.
- * The fr_bh() function executes for each
- * dlci/interface.
- *
- * Once receive interrupt copies data from the
- * card into an skb buffer, the skb buffer
- * is appended to a circular BH buffer.
- * Then the interrupt kicks fr_bh() to finish the
- * job at a later time (not within the interrupt).
- *
- * Usage:
- * Interrupts use this to defer a task to
- * a polling routine.
- *
- */
-
-static void fr_bh(struct net_device * dev)
-{
- fr_channel_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)){
-
- if (chan->common.sk == NULL || chan->common.func == NULL){
- clear_bit(0, &chan->tq_working);
- return;
- }
-
- 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;
- ++chan->ifstats.rx_dropped;
- dev_kfree_skb_any(skb);
- fr_bh_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{
- fr_bh_cleanup(dev);
- }
- }else{
- fr_bh_cleanup(dev);
- }
- }
- clear_bit(0, &chan->tq_working);
-
- return;
-}
-
-static int fr_bh_cleanup(struct net_device *dev)
-{
- fr_channel_t* chan = dev->priv;
-
- ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb = NULL;
-
- if (chan->bh_read == (MAX_BH_BUFF-1)){
- chan->bh_read=0;
- }else{
- ++chan->bh_read;
- }
-
- atomic_dec(&chan->bh_buff_used);
- return 0;
-}
-
-
-/*----------------------------------------------------------------------
- POLL BH HANDLERS AND KICK ROUTINES
- ----------------------------------------------------------------------*/
-
-/*============================================================
- * trigger_fr_poll
- *
- * Description:
- * Add a fr_poll() task into a tq_scheduler bh handler
- * 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_fr_poll(struct net_device *dev)
-{
- fr_channel_t* chan = dev->priv;
- schedule_work(&chan->fr_poll_work);
- return;
-}
-
-
-/*============================================================
- * fr_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:
- * Frame relay polling routine, responsible for
- * shutting down interfaces upon disconnect
- * and adding/removing routes.
- *
- * Usage:
- * This function is executed for each frame relay
- * dlci/interface through a tq_schedule bottom half.
- *
- * trigger_fr_poll() function is used to kick
- * the fr_poll routine.
- */
-
-static void fr_poll(struct net_device *dev)
-{
-
- fr_channel_t* chan;
- sdla_t *card;
- u8 check_gateway=0;
-
- if (!dev || (chan = dev->priv) == NULL)
- return;
-
- card = chan->card;
-
- /* (Re)Configuraiton is in progress, stop what you are
- * doing and get out */
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- return;
- }
-
- switch (chan->common.state){
-
- case WAN_DISCONNECTED:
-
- if (test_bit(DYN_OPT_ON,&chan->interface_down) &&
- !test_bit(DEV_DOWN, &chan->interface_down) &&
- dev->flags&IFF_UP){
-
- printk(KERN_INFO "%s: Interface %s is Down.\n",
- card->devname,dev->name);
- change_dev_flags(dev,dev->flags&~IFF_UP);
- set_bit(DEV_DOWN, &chan->interface_down);
- chan->route_flag = NO_ROUTE;
-
- }else{
- if (chan->inarp != INARP_NONE)
- process_route(dev);
- }
- break;
-
- case WAN_CONNECTED:
-
- if (test_bit(DYN_OPT_ON,&chan->interface_down) &&
- test_bit(DEV_DOWN, &chan->interface_down) &&
- !(dev->flags&IFF_UP)){
-
- printk(KERN_INFO "%s: Interface %s is Up.\n",
- card->devname,dev->name);
-
- change_dev_flags(dev,dev->flags|IFF_UP);
- clear_bit(DEV_DOWN, &chan->interface_down);
- check_gateway=1;
- }
-
- if (chan->inarp != INARP_NONE){
- process_route(dev);
- check_gateway=1;
- }
-
- if (chan->gateway && check_gateway)
- add_gateway(card,dev);
-
- break;
-
- }
-
- return;
-}
-
-/*==============================================================
- * check_tx_status
- *
- * Rationale:
- * We cannot transmit from an interrupt while
- * the if_send is transmitting data. Therefore,
- * we must check whether the tx buffers are
- * begin used, before we transmit from an
- * interrupt.
- *
- * Description:
- * Checks whether it's safe to use the transmit
- * buffers.
- *
- * Usage:
- * ARP and UDP handling routines use this function
- * because, they need to transmit data during
- * an interrupt.
- */
-
-static int check_tx_status(sdla_t *card, struct net_device *dev)
-{
-
- if (card->hw.type == SDLA_S514){
- if (test_bit(SEND_CRIT, (void*)&card->wandev.critical) ||
- test_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical)) {
- return 1;
- }
- }
-
- if (netif_queue_stopped(dev) || (card->u.f.tx_interrupts_pending))
- return 1;
-
- return 0;
-}
-
-/*===============================================================
- * move_dev_to_next
- *
- * Description:
- * Move the dev pointer to the next location in the
- * link list. Check if we are at the end of the
- * list, if so start from the begining.
- *
- * Usage:
- * Timer interrupt uses this function to efficiently
- * step through the devices that need to send ARP data.
- *
- */
-
-struct net_device *move_dev_to_next(sdla_t *card, struct net_device *dev)
-{
- if (card->wandev.new_if_cnt != 1){
- if (!*((struct net_device **)dev->priv))
- return card->wandev.dev;
- else
- return *((struct net_device **)dev->priv);
- }
- return dev;
-}
-
-/*==============================================================
- * trigger_config_fr
- *
- * Rationale:
- * All commands must be performed inside of a
- * interrupt.
- *
- * Description:
- * Kick the config_fr() routine throught the
- * timer interrupt.
- */
-
-
-static void trigger_config_fr (sdla_t *card)
-{
- fr508_flags_t* flags = card->flags;
-
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
- flags->imask |= FR_INTR_TIMER;
-}
-
-
-/*==============================================================
- * config_fr
- *
- * Rationale:
- * All commands must be performed inside of a
- * interrupt.
- &
- * Description:
- * Configure a DLCI. This function is executed
- * by a timer_interrupt. The if_open() function
- * triggers it.
- *
- * Usage:
- * new_if() collects all data necessary to
- * configure the DLCI. It sets the chan->dlci_ready
- * bit. When the if_open() function is executed
- * it checks this bit, and if its set it triggers
- * the timer interrupt to execute the config_fr()
- * function.
- */
-
-static void config_fr (sdla_t *card)
-{
- struct net_device *dev;
- fr_channel_t *chan;
-
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
-
- if ((chan=dev->priv) == NULL)
- continue;
-
- if (!test_bit(0,&chan->config_dlci))
- continue;
-
- clear_bit(0,&chan->config_dlci);
-
- /* If signalling is set to NO, then setup
- * DLCI addresses right away. Don't have to wait for
- * link to connect.
- */
- if (card->wandev.signalling == WANOPT_NO){
- printk(KERN_INFO "%s: Signalling set to NO: Mapping DLCI's\n",
- card->wandev.name);
- if (fr_init_dlci(card,chan)){
- printk(KERN_INFO "%s: ERROR: Failed to configure DLCI %i !\n",
- card->devname, chan->dlci);
- return;
- }
- }
-
- if (card->wandev.station == WANOPT_CPE) {
-
- update_chan_state(dev);
-
- /* CPE: issue full status enquiry */
- fr_issue_isf(card, FR_ISF_FSE);
-
- } else {
- /* FR switch: activate DLCI(s) */
-
- /* For Switch emulation we have to ADD and ACTIVATE
- * the DLCI(s) that were configured with the SET_DLCI_
- * CONFIGURATION command. Add and Activate will fail if
- * DLCI specified is not included in the list.
- *
- * Also If_open is called once for each interface. But
- * it does not get in here for all the interface. So
- * we have to pass the entire list of DLCI(s) to add
- * activate routines.
- */
-
- if (!check_dlci_config (card, chan)){
- fr_add_dlci(card, chan->dlci);
- fr_activate_dlci(card, chan->dlci);
- }
- }
-
- card->u.f.dlci_to_dev_map[chan->dlci] = dev;
- }
- return;
-}
-
-
-/*==============================================================
- * config_fr
- *
- * Rationale:
- * All commands must be executed during an interrupt.
- *
- * Description:
- * Trigger uncofig_fr() function through
- * the timer interrupt.
- *
- */
-
-static void trigger_unconfig_fr(struct net_device *dev)
-{
- fr_channel_t *chan = dev->priv;
- volatile sdla_t *card = chan->card;
- unsigned long timeout;
- fr508_flags_t* flags = card->flags;
- int reset_critical=0;
-
- if (test_bit(PERI_CRIT,(void*)&card->wandev.critical)){
- clear_bit(PERI_CRIT,(void*)&card->wandev.critical);
- reset_critical=1;
- }
-
- /* run unconfig_dlci() function
- * throught the timer interrupt */
- set_bit(0,(void*)&chan->unconfig_dlci);
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UNCONFIG;
- flags->imask |= FR_INTR_TIMER;
-
- /* Wait for the command to complete */
- timeout = jiffies;
- for(;;) {
-
- if(!(card->u.f.timer_int_enabled & TMR_INT_ENABLED_UNCONFIG))
- break;
-
- if (time_after(jiffies, timeout + 1 * HZ)){
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UNCONFIG;
- printk(KERN_INFO "%s: Failed to delete DLCI %i\n",
- card->devname,chan->dlci);
- break;
- }
- }
-
- if (reset_critical){
- set_bit(PERI_CRIT,(void*)&card->wandev.critical);
- }
-}
-
-/*==============================================================
- * unconfig_fr
- *
- * Rationale:
- * All commands must be executed during an interrupt.
- *
- * Description:
- * Remove the dlci from firmware.
- * This funciton is used in NODE shutdown.
- */
-
-static void unconfig_fr (sdla_t *card)
-{
- struct net_device *dev;
- fr_channel_t *chan;
-
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)){
-
- if ((chan=dev->priv) == NULL)
- continue;
-
- if (!test_bit(0,&chan->unconfig_dlci))
- continue;
-
- clear_bit(0,&chan->unconfig_dlci);
-
- if (card->wandev.station == WANOPT_NODE){
- printk(KERN_INFO "%s: Unconfiguring DLCI %i\n",
- card->devname,chan->dlci);
- fr_delete_dlci(card,chan->dlci);
- }
- card->u.f.dlci_to_dev_map[chan->dlci] = NULL;
- }
-}
-
-static int setup_fr_header(struct sk_buff *skb, struct net_device* dev,
- char op_mode)
-{
- fr_channel_t *chan=dev->priv;
-
- if (op_mode == WANPIPE) {
- chan->fr_header[0]=Q922_UI;
-
- switch (htons(skb->protocol)){
- case ETH_P_IP:
- chan->fr_header[1]=NLPID_IP;
- break;
- default:
- return -EINVAL;
- }
-
- return 2;
- }
-
- /* If we are in bridging mode, we must apply
- * an Ethernet header
- */
- if (op_mode == BRIDGE || op_mode == BRIDGE_NODE) {
- /* Encapsulate the packet as a bridged Ethernet frame. */
-#ifdef DEBUG
- printk(KERN_INFO "%s: encapsulating skb for frame relay\n",
- dev->name);
-#endif
- chan->fr_header[0] = 0x03;
- chan->fr_header[1] = 0x00;
- chan->fr_header[2] = 0x80;
- chan->fr_header[3] = 0x00;
- chan->fr_header[4] = 0x80;
- chan->fr_header[5] = 0xC2;
- chan->fr_header[6] = 0x00;
- chan->fr_header[7] = 0x07;
-
- /* Yuck. */
- skb->protocol = ETH_P_802_3;
- return 8;
- }
-
- return 0;
-}
-
-
-static int check_dlci_config (sdla_t *card, fr_channel_t *chan)
-{
- fr_mbox_t* mbox = card->mbox;
- int err=0;
- fr_conf_t *conf=NULL;
- unsigned short dlci_num = chan->dlci;
- int dlci_offset=0;
- struct net_device *dev = NULL;
-
- mbox->cmd.command = FR_READ_CONFIG;
- mbox->cmd.length = 0;
- mbox->cmd.dlci = dlci_num;
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- if (err == CMD_OK){
- return 0;
- }
-
- for (dev = card->wandev.dev; dev;
- dev=*((struct net_device **)dev->priv))
- set_chan_state(dev,WAN_DISCONNECTED);
-
- printk(KERN_INFO "DLCI %i Not configured, configuring\n",dlci_num);
-
- mbox->cmd.command = FR_COMM_DISABLE;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK){
- fr_event(card, err, mbox);
- return 2;
- }
-
- printk(KERN_INFO "Disabled Communications \n");
-
- mbox->cmd.command = FR_READ_CONFIG;
- mbox->cmd.length = 0;
- mbox->cmd.dlci = 0;
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK){
- fr_event(card, err, mbox);
- return 2;
- }
-
- conf = (fr_conf_t *)mbox->data;
-
- dlci_offset=0;
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
- fr_channel_t *chan_tmp = dev->priv;
- conf->dlci[dlci_offset] = chan_tmp->dlci;
- dlci_offset++;
- }
-
- printk(KERN_INFO "Got Fr configuration Buffer Length is %x Dlci %i Dlci Off %i\n",
- mbox->cmd.length,
- mbox->cmd.length > 0x20 ? conf->dlci[0] : -1,
- dlci_offset );
-
- mbox->cmd.length = 0x20 + dlci_offset*2;
-
- mbox->cmd.command = FR_SET_CONFIG;
- mbox->cmd.dlci = 0;
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK){
- fr_event(card, err, mbox);
- return 2;
- }
-
- initialize_rx_tx_buffers (card);
-
-
- printk(KERN_INFO "Configuraiton Succeded for new DLCI %i\n",dlci_num);
-
- if (fr_comm_enable (card)){
- return 2;
- }
-
- printk(KERN_INFO "Enabling Communications \n");
-
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
- fr_channel_t *chan_tmp = dev->priv;
- fr_init_dlci(card,chan_tmp);
- fr_add_dlci(card, chan_tmp->dlci);
- fr_activate_dlci(card, chan_tmp->dlci);
- }
-
- printk(KERN_INFO "END OF CONFIGURAITON %i\n",dlci_num);
-
- return 1;
-}
-
-static void initialize_rx_tx_buffers (sdla_t *card)
-{
- fr_buf_info_t* buf_info;
-
- if (card->hw.type == SDLA_S514) {
-
- buf_info = (void*)(card->hw.dpmbase + FR_MB_VECTOR +
- FR508_RXBC_OFFS);
-
- card->rxmb = (void*)(buf_info->rse_next + card->hw.dpmbase);
-
- card->u.f.rxmb_base =
- (void*)(buf_info->rse_base + card->hw.dpmbase);
-
- card->u.f.rxmb_last =
- (void*)(buf_info->rse_base +
- (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) +
- card->hw.dpmbase);
- }else{
- buf_info = (void*)(card->hw.dpmbase + FR508_RXBC_OFFS);
-
- card->rxmb = (void*)(buf_info->rse_next -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- card->u.f.rxmb_base =
- (void*)(buf_info->rse_base -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- card->u.f.rxmb_last =
- (void*)(buf_info->rse_base +
- (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) -
- FR_MB_VECTOR + card->hw.dpmbase);
- }
-
- card->u.f.rx_base = buf_info->buf_base;
- card->u.f.rx_top = buf_info->buf_top;
-
- card->u.f.tx_interrupts_pending = 0;
-
- return;
-}
-
-
-
-MODULE_LICENSE("GPL");
-
-/****** End *****************************************************************/