patch-2.3.21 linux/drivers/net/sdla_fr.c
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- Lines: 3128
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.3.20/linux/drivers/net/sdla_fr.c
- Orig date:
Wed Aug 18 11:36:42 1999
diff -u --recursive --new-file v2.3.20/linux/drivers/net/sdla_fr.c linux/drivers/net/sdla_fr.c
@@ -1,3127 +0,0 @@
-/*****************************************************************************
-* sdla_fr.c WANPIPE(tm) Multiprotocol WAN Link Driver. Frame relay module.
-*
-* Author(s): Gene Kozin
-* Jaspreet Singh <jaspreet@sangoma.com>
-*
-* Copyright: (c) 1995-1997 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 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/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/malloc.h> /* kmalloc(), kfree() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/if_arp.h> /* ARPHRD_* defines */
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <asm/io.h> /* for inb(), outb(), etc. */
-#include <linux/time.h> /* for do_gettimeofday */
-#define _GNUC_
-#include <linux/sdla_fr.h> /* frame relay firmware API definitions */
-#include <asm/uaccess.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
-
-/* Interrupt mode for DLCI = 0 */
-
-#define BUFFER_INTR_MODE 0x00
-#define DLCI_LIST_INTR_MODE 0x01
-
-/* Transmit Interrupt Status */
-
-#define DISABLED 0x00
-#define WAITING_TO_BE_ENABLED 0x01
-
-/* 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 net_device' we create for each network
- * interface to keep the rest of channel-specific data.
- */
-typedef struct fr_channel {
- 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() */
- char state; /* channel state */
- 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 */
- sdla_t *card; /* -> owner */
- struct net_device_stats ifstats; /* interface statistics */
- unsigned long if_send_entry;
- unsigned long if_send_skb_null;
- unsigned long if_send_broadcast;
- unsigned long if_send_multicast;
- unsigned long if_send_critical_ISR;
- unsigned long if_send_critical_non_ISR;
- unsigned long if_send_busy;
- unsigned long if_send_busy_timeout;
- unsigned long if_send_FPIPE_request;
- unsigned long if_send_DRVSTATS_request;
- unsigned long if_send_wan_disconnected;
- unsigned long if_send_dlci_disconnected;
- unsigned long if_send_no_bfrs;
- unsigned long if_send_adptr_bfrs_full;
- unsigned long if_send_bfrs_passed_to_adptr;
- unsigned long rx_intr_no_socket;
- unsigned long rx_intr_dev_not_started;
- unsigned long rx_intr_FPIPE_request;
- unsigned long rx_intr_DRVSTATS_request;
- unsigned long rx_intr_bfr_not_passed_to_stack;
- unsigned long rx_intr_bfr_passed_to_stack;
- unsigned long UDP_FPIPE_mgmt_kmalloc_err;
- unsigned long UDP_FPIPE_mgmt_direction_err;
- unsigned long UDP_FPIPE_mgmt_adptr_type_err;
- unsigned long UDP_FPIPE_mgmt_adptr_cmnd_OK;
- unsigned long UDP_FPIPE_mgmt_adptr_cmnd_timeout;
- unsigned long UDP_FPIPE_mgmt_adptr_send_passed;
- unsigned long UDP_FPIPE_mgmt_adptr_send_failed;
- unsigned long UDP_FPIPE_mgmt_not_passed_to_stack;
- unsigned long UDP_FPIPE_mgmt_passed_to_stack;
- unsigned long UDP_FPIPE_mgmt_no_socket;
- unsigned long UDP_DRVSTATS_mgmt_kmalloc_err;
- unsigned long UDP_DRVSTATS_mgmt_adptr_cmnd_OK;
- unsigned long UDP_DRVSTATS_mgmt_adptr_cmnd_timeout;
- unsigned long UDP_DRVSTATS_mgmt_adptr_send_passed;
- unsigned long UDP_DRVSTATS_mgmt_adptr_send_failed;
- unsigned long UDP_DRVSTATS_mgmt_not_passed_to_stack;
- unsigned long UDP_DRVSTATS_mgmt_passed_to_stack;
- unsigned long UDP_DRVSTATS_mgmt_no_socket;
- unsigned long router_up_time;
-} fr_channel_t;
-
-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;
-
-static unsigned short num_frames;
-static unsigned long curr_trace_addr;
-static unsigned long start_trace_addr;
-static unsigned short available_buffer_space;
-static char TracingEnabled; /* 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(wan_device_t * wandev);
-static int new_if(wan_device_t * wandev, struct net_device *dev,
- wanif_conf_t * conf);
-static int del_if(wan_device_t * wandev, struct net_device *dev);
-/* 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 int if_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len);
-static int if_rebuild_hdr(struct sk_buff *skb);
-static int if_send(struct sk_buff *skb, struct net_device *dev);
-static struct net_device_stats *if_stats(struct net_device *dev);
-/* Interrupt handlers */
-static void fr502_isr(sdla_t * card);
-static void fr508_isr(sdla_t * card);
-static void fr502_rx_intr(sdla_t * card);
-static void fr508_rx_intr(sdla_t * card);
-static void tx_intr(sdla_t * card);
-static void spur_intr(sdla_t * card);
-/* Background polling routines */
-static void wpf_poll(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_set_intr_mode(sdla_t * card, unsigned mode, unsigned mtu);
-static int fr_comm_enable(sdla_t * card);
-static int 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, int num);
-static int fr_activate_dlci(sdla_t * card, int dlci, int num);
-static int fr_issue_isf(sdla_t * card, int isf);
-static int fr502_send(sdla_t * card, int dlci, int attr, int len, void *buf);
-static int fr508_send(sdla_t * card, int dlci, int attr, int len, void *buf);
-/* 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);
-/* Udp management functions */
-static int process_udp_mgmt_pkt(char udp_pkt_src, sdla_t * card, struct sk_buff *skb, struct net_device *dev, int dlci, fr_channel_t * chan);
-static int process_udp_driver_call(char udp_pkt_src, sdla_t * card, struct sk_buff *skb, struct net_device *dev, int dlci, fr_channel_t * chan);
-static int udp_pkt_type(struct sk_buff *skb, sdla_t * card);
-/* 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);
-
-/****** 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)
-{
- union {
- char str[80];
- fr_conf_t cfg;
- } u;
- int i;
- /* 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_FR502:
- card->mbox = (void *) (card->hw.dpmbase + FR502_MBOX_OFFS);
- card->rxmb = (void *) (card->hw.dpmbase + FR502_RXMB_OFFS);
- card->flags = (void *) (card->hw.dpmbase + FR502_FLAG_OFFS);
- card->isr = &fr502_isr;
- break;
- case SFID_FR508:
- card->mbox = (void *) (card->hw.dpmbase + FR508_MBOX_OFFS);
- card->flags = (void *) (card->hw.dpmbase + FR508_FLAG_OFFS);
- card->isr = &fr508_isr;
- break;
- default:
- return -EINVAL;
- }
- /* 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 = max(min(conf->mtu, 4080), FR_CHANNEL_MTU + FR_HEADER_LEN);
- conf->bps = min(conf->bps, 2048000);
- /* Configure adapter firmware */
- memset(&u.cfg, 0, sizeof(u.cfg));
- 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;
- if (conf->station == WANOPT_CPE)
- {
- u.cfg.options = 0x0080;
- printk(KERN_INFO "%s: Global CIR enabled by Default\n", card->devname);
- }
- else
- {
- u.cfg.options = 0x0081;
- }
- switch (conf->u.fr.signalling)
- {
- case WANOPT_FR_Q933:
- u.cfg.options |= 0x0200;
- break;
- case WANOPT_FR_LMI:
- u.cfg.options |= 0x0400;
- break;
- }
- if (conf->station == WANOPT_CPE)
- {
- 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(max(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(conf->u.fr.t391, 30);
- else
- u.cfg.t391 = 5;
- if (conf->u.fr.t392)
- u.cfg.t392 = min(conf->u.fr.t392, 30);
- else
- u.cfg.t392 = 15;
- if (conf->u.fr.n391)
- u.cfg.n391 = min(conf->u.fr.n391, 255);
- else
- u.cfg.n391 = 2;
- if (conf->u.fr.n392)
- u.cfg.n392 = min(conf->u.fr.n392, 10);
- else
- u.cfg.n392 = 3;
- if (conf->u.fr.n393)
- u.cfg.n393 = min(conf->u.fr.n393, 10);
- else
- u.cfg.n393 = 4;
- if (fr_configure(card, &u.cfg))
- return -EIO;
- if (card->hw.fwid == SFID_FR508)
- {
- fr_buf_info_t *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_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->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 = &wpf_poll;
- 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->wandev.enable_tx_int = 0;
- card->irq_dis_if_send_count = 0;
- card->irq_dis_poll_count = 0;
- card->wandev.enable_IPX = conf->enable_IPX;
- if (conf->network_number)
- card->wandev.network_number = conf->network_number;
- else
- card->wandev.network_number = 0xDEADBEEF;
- /* Intialize global statistics for a card */
- init_global_statistics(card);
- TracingEnabled = 0;
- return 0;
-}
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Update device status & statistics.
- */
-
-static int update(wan_device_t * wandev)
-{
- sdla_t *card;
- /* sanity checks */
- if ((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
- if (wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
- if (test_and_set_bit(0, (void *) &wandev->critical))
- return -EAGAIN;
- card = wandev->private;
- fr_get_err_stats(card);
- fr_get_stats(card);
- wandev->critical = 0;
- 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(wan_device_t * wandev, struct net_device *dev, wanif_conf_t * conf)
-{
- sdla_t *card = wandev->private;
- fr_channel_t *chan;
- 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 (is_digit(conf->addr[0]))
- {
- int dlci = dec_to_uint(conf->addr, 0);
- if (dlci && (dlci <= 4095))
- {
- 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 (err)
- {
- kfree(chan);
- return err;
- }
- /* place cir,be,bc and other channel specific information into the
- * chan structure
- */
- if (conf->cir)
- {
- chan->cir = max(1, min(conf->cir, 512));
- chan->cir_status = CIR_ENABLED;
- if (conf->bc)
- chan->bc = max(1, min(conf->bc, 512));
- if (conf->be)
- chan->be = max(0, min(conf->be, 511));
- }
- else
- chan->cir_status = CIR_DISABLED;
- chan->mc = conf->mc;
- chan->dlci_configured = DLCI_NOT_CONFIGURED;
- chan->tx_int_status = DISABLED;
- init_chan_statistics(chan);
- /* prepare network device data space for registration */
- dev->name = chan->name;
- dev->init = &if_init;
- dev->priv = chan;
- return 0;
-}
-/*============================================================================
- * Delete logical channel.
- */
-static int del_if(wan_device_t * wandev, struct net_device *dev)
-{
- if (dev->priv)
- {
- kfree(dev->priv);
- dev->priv = NULL;
- }
- return 0;
-}
-
-/****** 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;
- wan_device_t *wandev = &card->wandev;
-
- /* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_header = &if_header;
- dev->rebuild_header = &if_rebuild_hdr;
- dev->hard_start_xmit = &if_send;
- dev->get_stats = &if_stats;
- /* Initialize media-specific parameters */
- dev->type = ARPHRD_DLCI; /* ARP h/w type */
- dev->mtu = FR_CHANNEL_MTU;
- 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);
- /* Initialize hardware parameters (just for reference) */
- dev->irq = wandev->irq;
- dev->dma = wandev->dma;
- dev->base_addr = wandev->ioport;
- dev->mem_start = (unsigned long)wandev->maddr;
- dev->mem_end = dev->mem_start + wandev->msize - 1;
- /* Set transmit buffer queue length */
- dev->tx_queue_len = 10;
- /* Initialize socket buffers */
- dev_init_buffers(dev);
- set_chan_state(dev, WAN_DISCONNECTED);
- 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;
- struct net_device *dev2;
- int err = 0;
- fr508_flags_t *flags = card->flags;
- struct timeval tv;
- if (dev->start)
- return -EBUSY; /* only one open is allowed */
- if (test_and_set_bit(0, (void *) &card->wandev.critical))
- return -EAGAIN;
- if (!card->open_cnt)
- {
- Intr_test_counter = 0;
- card->intr_mode = INTR_TEST_MODE;
- err = intr_test(card);
- if ((err) || (Intr_test_counter != (MAX_INTR_TEST_COUNTER + 1))) {
- printk(KERN_INFO
- "%s: Interrupt Test Failed, Counter: %i\n",
- card->devname, Intr_test_counter);
- err = -EIO;
- card->wandev.critical = 0;
- return err;
- }
- printk(KERN_INFO "%s: Interrupt Test Passed, Counter: %i\n"
- ,card->devname, Intr_test_counter);
- /* The following allocates and intializes a circular
- * link list of interfaces per card.
- */
- card->devs_struct = kmalloc(sizeof(load_sharing_t), GFP_KERNEL);
- if (card->devs_struct == NULL)
- return -ENOMEM;
- card->dev_to_devtint_next = card->devs_struct;
- for (dev2 = card->wandev.dev; dev2; dev2 = dev2->slave) {
- (card->devs_struct)->dev_ptr = dev2;
- if (dev2->slave == NULL)
- (card->devs_struct)->next = card->dev_to_devtint_next;
- else {
- (card->devs_struct)->next = kmalloc(
- sizeof(load_sharing_t), GFP_KERNEL);
- if ((card->devs_struct)->next == NULL)
- return -ENOMEM;
- card->devs_struct = (card->devs_struct)->next;
- }
- }
- card->devs_struct = card->dev_to_devtint_next;
- card->intr_mode = BUFFER_INTR_MODE;
- /*
- check all the interfaces for the device to see if CIR has
- been enabled for any DLCI(s). If so then use the DLCI list
- Interrupt mode for fr_set_intr_mode(), otherwise use the default global interrupt mode
- */
- for (dev2 = card->wandev.dev; dev2; dev2 = dev2->slave) {
- if (((fr_channel_t *) dev2->priv)->cir_status
- == CIR_ENABLED) {
- card->intr_mode = DLCI_LIST_INTR_MODE;
- break;
- }
- }
- /*
- 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 (card->intr_mode == BUFFER_INTR_MODE) {
- if (fr_set_intr_mode(card, 0x03, card->wandev.mtu)) {
- err = -EIO;
- card->wandev.critical = 0;
- return err;
- }
- printk(KERN_INFO
- "%s: Global Buffering Tx Interrupt Mode\n"
- ,card->devname);
- } else if (card->intr_mode == DLCI_LIST_INTR_MODE) {
- if (fr_set_intr_mode(card, 0x83, card->wandev.mtu)) {
- err = -EIO;
- card->wandev.critical = 0;
- return err;
- }
- printk(KERN_INFO
- "%s: DLCI list Tx Interrupt Mode\n",
- card->devname);
- }
- flags->imask &= ~0x02;
- if (fr_comm_enable(card)) {
- err = -EIO;
- card->wandev.critical = 0;
- return err;
- }
- wanpipe_set_state(card, WAN_CONNECTED);
- if (card->wandev.station == WANOPT_CPE) {
- /* 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.
- */
- fr_add_dlci(card,
- card->u.f.node_dlci[0], card->u.f.dlci_num);
- fr_activate_dlci(card,
- card->u.f.node_dlci[0], card->u.f.dlci_num);
- }
- }
- dev->mtu = min(dev->mtu, card->wandev.mtu - FR_HEADER_LEN);
- dev->interrupt = 0;
- dev->tbusy = 0;
- dev->start = 1;
- wanpipe_open(card);
- update_chan_state(dev);
- do_gettimeofday(&tv);
- chan->router_start_time = tv.tv_sec;
- card->wandev.critical = 0;
- 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 (test_and_set_bit(0, (void *) &card->wandev.critical))
- return -EAGAIN;
- dev->start = 0;
- wanpipe_close(card);
- if (!card->open_cnt)
- {
- wanpipe_set_state(card, WAN_DISCONNECTED);
- fr_set_intr_mode(card, 0, 0);
- fr_comm_disable(card);
- }
- card->wandev.critical = 0;
- return 0;
-}
-
-/*============================================================================
- * Build media header.
- * o encapsulate packet according to encapsulation type.
- *
- * The trick here is to put packet type (Ethertype) into 'protocol' field of
- * the socket buffer, so that we don't forget it. If encapsulation fails,
- * set skb->protocol to 0 and discard packet later.
- *
- * Return: media header length.
- */
-
-static int if_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len)
-{
- int hdr_len = 0;
- skb->protocol = type;
- hdr_len = wanrouter_encapsulate(skb, dev);
- if (hdr_len < 0)
- {
- hdr_len = 0;
- skb->protocol = 0;
- }
- skb_push(skb, 1);
- skb->data[0] = Q922_UI;
- ++hdr_len;
- return hdr_len;
-}
-
-/*============================================================================
- * 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;
-}
-
-/*============================================================================
- * Send a packet on a network interface.
- * o set tbusy flag (marks start of the transmission) to block a timer-based
- * transmit from overlapping.
- * o check link state. If link is not up, then drop the packet.
- * o check channel status. If it's down then initiate a call.
- * o pass a packet to corresponding WAN device.
- * o free socket buffer
- *
- * Return: 0 complete (socket buffer must be freed)
- * non-0 packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- * bottom half" (with interrupts enabled).
- * 2. Setting tbusy flag will inhibit further transmit requests from the
- * protocol stack and can be used for flow control with protocol layer.
- */
-
-static int if_send(struct sk_buff *skb, struct net_device *dev)
-{
- fr_channel_t *chan = dev->priv;
- sdla_t *card = chan->card;
- int retry = 0, err;
- unsigned char *sendpacket;
- struct net_device *dev2;
- unsigned long check_braddr, check_mcaddr;
- fr508_flags_t *adptr_flags = card->flags;
- int udp_type, send_data;
- fr_dlci_interface_t *dlci_interface = chan->dlci_int_interface;
- unsigned long host_cpu_flags;
- ++chan->if_send_entry;
-
- if (dev->tbusy)
- {
- /* 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->if_send_busy;
- ++chan->ifstats.collisions;
- if ((jiffies - chan->tick_counter) < (5 * HZ))
- return 1;
-
- printk(KERN_INFO "%s: Transmit timed out\n", chan->name);
- ++chan->if_send_busy_timeout;
- /* unbusy all the interfaces on the card */
- for (dev2 = card->wandev.dev; dev2; dev2 = dev2->slave)
- dev2->tbusy = 0;
- }
- sendpacket = skb->data;
- udp_type = udp_pkt_type(skb, card);
- if (udp_type == UDP_DRVSTATS_TYPE)
- {
- ++chan->if_send_DRVSTATS_request;
- process_udp_driver_call(UDP_PKT_FRM_STACK, card, skb, dev, 0,
- chan);
- dev_kfree_skb(skb);
- return 0;
- }
- else if (udp_type == UDP_FPIPE_TYPE)
- ++chan->if_send_FPIPE_request;
- /* retreive source address in two forms: broadcast & multicast */
- check_braddr = sendpacket[17];
- check_mcaddr = sendpacket[14];
- check_braddr = check_braddr << 8;
- check_mcaddr = check_mcaddr << 8;
- check_braddr |= sendpacket[16];
- check_mcaddr |= sendpacket[15];
- check_braddr = check_braddr << 8;
- check_mcaddr = check_mcaddr << 8;
- check_braddr |= sendpacket[15];
- check_mcaddr |= sendpacket[16];
- check_braddr = check_braddr << 8;
- check_mcaddr = check_mcaddr << 8;
- check_braddr |= sendpacket[14];
- check_mcaddr |= sendpacket[17];
- /* if the Source Address is a Multicast address */
- if ((chan->mc == WANOPT_NO) && (check_mcaddr >= 0xE0000001) &&
- (check_mcaddr <= 0xFFFFFFFE))
- {
- printk(KERN_INFO "%s: Multicast Src. Addr. silently discarded\n"
- ,card->devname);
- dev_kfree_skb(skb);
- ++chan->ifstats.tx_dropped;
- ++chan->if_send_multicast;
- return 0;
- }
- disable_irq(card->hw.irq);
- ++card->irq_dis_if_send_count;
- if (test_and_set_bit(0, (void *) &card->wandev.critical))
- {
- if (card->wandev.critical == CRITICAL_IN_ISR)
- {
- ++chan->if_send_critical_ISR;
- if (card->intr_mode == DLCI_LIST_INTR_MODE)
- {
- /* The enable_tx_int flag is set here so that if
- * the critical flag is set due to an interrupt
- * then we want to enable transmit interrupts
- * again.
- */
- card->wandev.enable_tx_int = 1;
- /* Setting this flag to WAITING_TO_BE_ENABLED
- * specifies that interrupt bit has to be
- * enabled for that particular interface.
- * (delayed interrupt)
- */
- chan->tx_int_status = WAITING_TO_BE_ENABLED;
- /* This is used for enabling dynamic calculation
- * of CIRs relative to the packet length.
- */
- chan->pkt_length = skb->len;
- dev->tbusy = 1;
- chan->tick_counter = jiffies;
- }
- else
- {
- card->wandev.enable_tx_int = 1;
- dev->tbusy = 1;
- chan->tick_counter = jiffies;
- }
- save_flags(host_cpu_flags);
- cli();
- if ((!(--card->irq_dis_if_send_count)) &&
- (!card->irq_dis_poll_count))
- enable_irq(card->hw.irq);
- restore_flags(host_cpu_flags);
- return 1;
- }
- ++chan->if_send_critical_non_ISR;
- ++chan->ifstats.tx_dropped;
- dev_kfree_skb(skb);
- save_flags(host_cpu_flags);
- cli();
- if ((!(--card->irq_dis_if_send_count)) &&
- (!card->irq_dis_poll_count))
- enable_irq(card->hw.irq);
- restore_flags(host_cpu_flags);
- return 0;
- }
- card->wandev.critical = 0x21;
- if (udp_type == UDP_FPIPE_TYPE)
- {
- err = process_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb,
- dev, 0, chan);
- }
- else if (card->wandev.state != WAN_CONNECTED)
- {
- ++chan->if_send_wan_disconnected;
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- }
- else if (chan->state != WAN_CONNECTED)
- {
- ++chan->if_send_dlci_disconnected;
- update_chan_state(dev);
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- }
- else if (!is_tx_ready(card, chan))
- {
- if (card->intr_mode == DLCI_LIST_INTR_MODE)
- {
- dlci_interface->gen_interrupt |= 0x40;
- dlci_interface->packet_length = skb->len;
- }
- dev->tbusy = 1;
- chan->tick_counter = jiffies;
- adptr_flags->imask |= 0x02;
- ++chan->if_send_no_bfrs;
- retry = 1;
- }
- else
- {
- send_data = 1;
- /* If it's an IPX packet */
- if (sendpacket[1] == 0x00 &&
- sendpacket[2] == 0x80 &&
- sendpacket[6] == 0x81 &&
- sendpacket[7] == 0x37)
- {
- if (card->wandev.enable_IPX)
- {
- switch_net_numbers(sendpacket,
- card->wandev.network_number, 0);
- }
- else
- {
- /* increment some statistic here! */
- send_data = 0;
- }
- }
- if (send_data)
- {
- err = (card->hw.fwid == SFID_FR508) ?
- fr508_send(card, chan->dlci, 0, skb->len, skb->data) :
- fr502_send(card, chan->dlci, 0, skb->len, skb->data);
- if (err)
- {
- if (card->intr_mode == DLCI_LIST_INTR_MODE)
- {
- dlci_interface->gen_interrupt |= 0x40;
- dlci_interface->packet_length = skb->len;
- }
- dev->tbusy = 1;
- chan->tick_counter = jiffies;
- adptr_flags->imask |= 0x02;
- retry = 1;
- ++chan->if_send_adptr_bfrs_full;
- ++chan->ifstats.tx_errors;
- ++card->wandev.stats.tx_errors;
- }
- else
- {
- ++chan->if_send_bfrs_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;
- }
- }
- }
- if (!retry)
- dev_kfree_skb(skb);
-
- card->wandev.critical = 0;
- save_flags(host_cpu_flags);
- cli();
- if ((!(--card->irq_dis_if_send_count)) && (!card->irq_dis_poll_count))
- enable_irq(card->hw.irq);
- restore_flags(host_cpu_flags);
- return retry;
-}
-
-/*============================================================================
- * Reply to UDP Management system.
- * Return nothing.
- */
-
-static int reply_udp(unsigned char *data, unsigned int mbox_len)
-{
- unsigned short len, udp_length, temp, i, ip_length;
- unsigned long sum;
- /* Set length of packet */
- len = mbox_len + 62;
- /* fill in UDP reply */
- data[38] = 0x02;
- /* fill in UDP length */
- udp_length = mbox_len + 40;
- /* put it on an even boundary */
- if (udp_length & 0x0001)
- {
- udp_length += 1;
- len += 1;
- }
- temp = (udp_length << 8) | (udp_length >> 8);
- memcpy(&data[26], &temp, 2);
- /* swap UDP ports */
- memcpy(&temp, &data[22], 2);
- memcpy(&data[22], &data[24], 2);
- memcpy(&data[24], &temp, 2);
- /* add UDP pseudo header */
- temp = 0x1100;
- memcpy(&data[udp_length + 22], &temp, 2);
- temp = (udp_length << 8) | (udp_length >> 8);
- memcpy(&data[udp_length + 24], &temp, 2);
- /* calculate UDP checksum */
- data[28] = data[29] = 0;
- sum = 0;
- for (i = 0; i < udp_length + 12; i += 2)
- {
- memcpy(&temp, &data[14 + 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;
- memcpy(&data[28], &temp, 2);
- /* fill in IP length */
- ip_length = udp_length + 20;
- temp = (ip_length << 8) | (ip_length >> 8);
- memcpy(&data[4], &temp, 2);
- /* swap IP addresses */
- memcpy(&temp, &data[14], 2);
- memcpy(&data[14], &data[18], 2);
- memcpy(&data[18], &temp, 2);
- memcpy(&temp, &data[16], 2);
- memcpy(&data[16], &data[20], 2);
- memcpy(&data[20], &temp, 2);
- /* fill in IP checksum */
- data[12] = data[13] = 0;
- sum = 0;
- for (i = 0; i < 20; i += 2)
- {
- memcpy(&temp, &data[2 + 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;
- memcpy(&data[12], &temp, 2);
- return len;
-} /* reply_udp */
-/*
- 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 net_device_stats.
- */
-
-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 **************************************************/
-/*============================================================================
- * S502 frame relay interrupt service routine.
- */
-
-static void fr502_isr(sdla_t * card)
-{
- fr502_flags_t *flags = card->flags;
- switch (flags->iflag)
- {
- case 0x01: /* receive interrupt */
- fr502_rx_intr(card);
- break;
- case 0x02: /* transmit interrupt */
- flags->imask &= ~0x02;
- tx_intr(card);
- break;
- default:
- spur_intr(card);
- }
- flags->iflag = 0;
-}
-/*============================================================================
- * S508 frame relay interrupt service routine.
- */
-
-static void fr508_isr(sdla_t * card)
-{
- fr508_flags_t *flags = card->flags;
- fr_buf_ctl_t *bctl;
- char *ptr = &flags->iflag;
- struct net_device *dev = card->wandev.dev;
- struct net_device *dev2;
- int i;
- unsigned long host_cpu_flags;
- unsigned disable_tx_intr = 1;
- fr_channel_t *chan;
- fr_dlci_interface_t *dlci_interface;
- /* This flag prevents nesting of interrupts. See sdla_isr() routine
- * in sdlamain.c.
- */
- card->in_isr = 1;
- ++card->statistics.isr_entry;
- if (test_and_set_bit(0, (void *) &card->wandev.critical))
- {
- printk(KERN_INFO "fr508_isr: %s, wandev.critical set to 0x%02X, int type = 0x%02X\n", card->devname, card->wandev.critical, flags->iflag);
- ++card->statistics.isr_already_critical;
- card->in_isr = 0;
- return;
- }
- /* For all interrupts set the critical flag to CRITICAL_RX_INTR.
- * If the if_send routine is called with this flag set it will set
- * the enable transmit flag to 1. (for a delayed interrupt)
- */
- card->wandev.critical = CRITICAL_IN_ISR;
- card->dlci_int_mode_unbusy = 0;
- card->buff_int_mode_unbusy = 0;
- switch (flags->iflag)
- {
- case 0x01: /* receive interrupt */
- ++card->statistics.isr_rx;
- fr508_rx_intr(card);
- break;
- case 0x02: /* transmit interrupt */
- ++card->statistics.isr_tx;
- bctl = (void *) (flags->tse_offs - FR_MB_VECTOR +
- card->hw.dpmbase);
- bctl->flag = 0xA0;
- if (card->intr_mode == DLCI_LIST_INTR_MODE)
- {
- /* Find the structure and make it unbusy */
- dev = find_channel(card, flags->dlci);
- dev->tbusy = 0;
- /* This is used to perform devtint at the
- * end of the isr
- */
- card->dlci_int_mode_unbusy = 1;
- /* check to see if any other interfaces are
- * busy. If so then do not disable the tx
- * interrupts
- */
- for (dev2 = card->wandev.dev; dev2;
- dev2 = dev2->slave)
- {
- if (dev2->tbusy == 1)
- {
- disable_tx_intr = 0;
- break;
- }
- }
- if (disable_tx_intr)
- flags->imask &= ~0x02;
- }
- else if (card->intr_mode == BUFFER_INTR_MODE)
- {
- for (dev2 = card->wandev.dev; dev2;
- dev2 = dev2->slave)
- {
- if (!dev2 || !dev2->start)
- {
- ++card->statistics.tx_intr_dev_not_started;
- continue;
- }
- if (dev2->tbusy)
- {
- card->buff_int_mode_unbusy = 1;
- ((fr_channel_t *) dev2->priv)->dev_pending_devtint = 1;
- dev2->tbusy = 0;
- }
- else
- ((fr_channel_t *) dev2->priv)->dev_pending_devtint = 0;
- }
- flags->imask &= ~0x02;
- }
- break;
- case 0x08:
- Intr_test_counter++;
- ++card->statistics.isr_intr_test;
- 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;
- }
- card->wandev.critical = CRITICAL_INTR_HANDLED;
- if (card->wandev.enable_tx_int)
- {
- if (card->intr_mode == DLCI_LIST_INTR_MODE)
- {
- for (dev2 = card->wandev.dev; dev2; dev2 = dev2->slave)
- {
- chan = dev2->priv;
- if (chan->tx_int_status == WAITING_TO_BE_ENABLED)
- {
- dlci_interface = chan->dlci_int_interface;
- dlci_interface->gen_interrupt |= 0x40;
- dlci_interface->packet_length = chan->pkt_length;
- chan->tx_int_status = DISABLED;
- }
- }
- }
- card->wandev.enable_tx_int = 0;
- flags->imask |= 0x02;
- ++card->statistics.isr_enable_tx_int;
- }
- save_flags(host_cpu_flags);
- cli();
- card->in_isr = 0;
- card->wandev.critical = 0xD1;
- flags->iflag = 0;
- card->wandev.critical = 0;
- restore_flags(host_cpu_flags);
- /* Device is now ready to send. The instant this is executed the If_Send
- routine is called. That is why this is put at the bottom of the ISR
- to prevent a endless loop condition caused by repeated Interrupts and
- enable_tx_int flag.
- */
- if (card->dlci_int_mode_unbusy)
- mark_bh(NET_BH);
- if (card->buff_int_mode_unbusy)
- {
- for (;;)
- {
- if (((fr_channel_t *) ((card->devs_struct)->dev_ptr)->priv)->dev_pending_devtint == 1)
- {
- ((fr_channel_t *) ((card->devs_struct)->dev_ptr)->priv)->dev_pending_devtint = 0;
- mark_bh(NET_BH);
- }
- if ((card->devs_struct)->next == card->dev_to_devtint_next)
- break;
- card->devs_struct = (card->devs_struct)->next;
- }
- card->devs_struct = (card->dev_to_devtint_next)->next;
- card->dev_to_devtint_next = card->devs_struct;
- }
-}
-/*============================================================================
- * Receive interrupt handler.
- */
-
-static void fr502_rx_intr(sdla_t * card)
-{
- fr_mbox_t *mbox = card->rxmb;
- struct sk_buff *skb;
- struct net_device *dev;
- fr_channel_t *chan;
- unsigned dlci, len;
- void *buf;
- unsigned char *sendpacket;
- unsigned char buf2[3];
- int udp_type;
- sdla_mapmem(&card->hw, FR502_RX_VECTOR);
- dlci = mbox->cmd.dlci;
- len = mbox->cmd.length;
- /* Find network interface for this packet */
- dev = find_channel(card, dlci);
- if (dev == NULL)
- {
- /* Invalid channel, discard packet */
- printk(KERN_INFO "%s: receiving on orphaned DLCI %d!\n",
- card->devname, dlci);
- sdla_mapmem(&card->hw, FR_MB_VECTOR);
- }
- chan = dev->priv;
- if (!dev->start)
- {
- ++chan->ifstats.rx_dropped;
- sdla_mapmem(&card->hw, FR_MB_VECTOR);
- }
- /* Allocate socket buffer */
- skb = dev_alloc_skb(len);
- if (skb == NULL)
- {
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- ++chan->ifstats.rx_dropped;
- sdla_mapmem(&card->hw, FR_MB_VECTOR);
- }
- /* Copy data to the socket buffer */
- buf = skb_put(skb, len);
- memcpy(buf, mbox->data, len);
- sdla_mapmem(&card->hw, FR_MB_VECTOR);
- /* Check if it's a UDP management packet */
- sendpacket = skb->data;
- memcpy(&buf2, &card->wandev.udp_port, 2);
- udp_type = udp_pkt_type(skb, card);
- if ((udp_type == UDP_FPIPE_TYPE) || (udp_type == UDP_DRVSTATS_TYPE))
- {
- if (udp_type == UDP_DRVSTATS_TYPE)
- {
- ++chan->rx_intr_DRVSTATS_request;
- process_udp_driver_call(UDP_PKT_FRM_NETWORK, card, skb,
- dev, dlci, chan);
- }
- else
- {
- ++chan->rx_intr_FPIPE_request;
- process_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK, card, skb,
- dev, dlci, chan);
- }
- }
- else
- {
- /* Decapsulate packet and pass it up the protocol stack */
- skb->dev = dev;
- buf = skb_pull(skb, 1); /* remove hardware header */
- if (!wanrouter_type_trans(skb, dev))
- {
- /* can't decapsulate packet */
- dev_kfree_skb(skb);
- ++chan->ifstats.rx_errors;
- ++card->wandev.stats.rx_errors;
- }
- else
- {
- netif_rx(skb);
- ++chan->ifstats.rx_packets;
- ++card->wandev.stats.rx_packets;
- chan->ifstats.rx_bytes += skb->len;
- card->wandev.stats.rx_bytes += skb->len;
- }
- }
- sdla_mapmem(&card->hw, FR_MB_VECTOR);
-}
-/*============================================================================
- * Receive interrupt handler.
- */
-
-static void fr508_rx_intr(sdla_t * card)
-{
- fr_buf_ctl_t *frbuf = card->rxmb;
- struct sk_buff *skb;
- struct net_device *dev;
- fr_channel_t *chan;
- unsigned dlci, len, offs;
- void *buf;
- unsigned rx_count = 0;
- fr508_flags_t *flags = card->flags;
- char *ptr = &flags->iflag;
- int i, err, udp_type;
- 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;
- return;
- }
-
- do
- {
- len = frbuf->length;
- dlci = frbuf->dlci;
- offs = frbuf->offset;
- /* Find network interface for this packet */
- dev = find_channel(card, dlci);
- chan = dev->priv;
- if (dev == NULL)
- {
- /* Invalid channel, discard packet */
- printk(KERN_INFO "%s: receiving on orphaned DLCI %d!\n"
- ,card->devname, dlci);
- ++card->statistics.rx_intr_on_orphaned_DLCI;
- }
- else
- {
- skb = dev_alloc_skb(len);
- if (!dev->start || (skb == NULL))
- {
- ++chan->ifstats.rx_dropped;
- if (dev->start)
- {
- printk(KERN_INFO
- "%s: no socket buffers available!\n",
- card->devname);
- ++chan->rx_intr_no_socket;
- } else
- ++chan->rx_intr_dev_not_started;
- }
- else
- {
- /* Copy data to 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);
- udp_type = udp_pkt_type(skb, card);
- if (udp_type == UDP_DRVSTATS_TYPE)
- {
- ++chan->rx_intr_DRVSTATS_request;
- process_udp_driver_call(
- UDP_PKT_FRM_NETWORK, card, skb,
- dev, dlci, chan);
- }
- else if (udp_type == UDP_FPIPE_TYPE)
- {
- ++chan->rx_intr_FPIPE_request;
- err = process_udp_mgmt_pkt(
- UDP_PKT_FRM_NETWORK, card,
- skb, dev, dlci, chan);
- }
- else if (handle_IPXWAN(skb->data, card->devname, card->wandev.enable_IPX, card->wandev.network_number))
- {
- if (card->wandev.enable_IPX)
- fr508_send(card, dlci, 0, skb->len, skb->data);
- }
- else
- {
- /* Decapsulate packet and pass it up the
- protocol stack */
- skb->dev = dev;
- /* remove hardware header */
- buf = skb_pull(skb, 1);
- if (!wanrouter_type_trans(skb, dev))
- {
- /* can't decapsulate packet */
- dev_kfree_skb(skb);
- ++chan->
- rx_intr_bfr_not_passed_to_stack;
- ++chan->
- ifstats.rx_errors;
- ++card->
- wandev.stats.rx_errors;
- }
- else
- {
- netif_rx(skb);
- ++chan->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;
- }
- }
- }
- }
- /* 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;
- /* The loop put in is temporary, that is why the break is
- * placed here. (?????)
- */
- break;
- frbuf = card->rxmb;
- }
- while (frbuf->flag && ((++rx_count) < 4));
-}
-/*============================================================================
- * Transmit interrupt handler.
- * o print a warning
- * o
- * If number of spurious interrupts exceeded some limit, then ???
- */
-static void tx_intr(sdla_t * card)
-{
- struct net_device *dev = card->wandev.dev;
- if (card->intr_mode == BUFFER_INTR_MODE)
- {
- for (; dev; dev = dev->slave)
- {
- if (!dev || !dev->start)
- {
- ++card->statistics.tx_intr_dev_not_started;
- continue;
- }
- dev->tbusy = 0;
- mark_bh(NET_BH);
- }
- }
- else
- {
- dev->tbusy = 0;
- mark_bh(NET_BH);
- }
-}
-
-/*============================================================================
- * Spurious interrupt handler.
- * o print a warning
- * o
- * If number of spurious interrupts exceeded some limit, then ???
- */
-
-static void spur_intr(sdla_t * card)
-{
- printk(KERN_INFO "%s: spurious interrupt!\n", card->devname);
-}
-
-/*
- Return 0 for non-IPXWAN packet
- 1 for IPXWAN packet or IPX is not enabled!
- */
-
-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. */
- 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, its 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;
-}
-
-/****** Background Polling Routines ****************************************/
-
-/*============================================================================
- * Main polling routine.
- * This routine is repeatedly called by the WANPIPE 'thead' to allow for
- * time-dependent housekeeping work.
- *
- * o fetch asynchronous network events.
- *
- * Notes:
- * 1. This routine may be called on interrupt context with all interrupts
- * enabled. Beware!
- */
-
-static void wpf_poll(sdla_t * card)
-{
-/* struct net_device* dev = card->wandev.dev; */
- fr508_flags_t *flags = card->flags;
- unsigned long host_cpu_flags;
- ++card->statistics.poll_entry;
- if (((jiffies - card->state_tick) < HZ) ||
- (card->intr_mode == INTR_TEST_MODE))
- return;
- disable_irq(card->hw.irq);
- ++card->irq_dis_poll_count;
- if (test_and_set_bit(0, (void *) &card->wandev.critical))
- {
- ++card->statistics.poll_already_critical;
- save_flags(host_cpu_flags);
- cli();
- if ((!card->irq_dis_if_send_count) &&
- (!(--card->irq_dis_poll_count)))
- enable_irq(card->hw.irq);
- restore_flags(host_cpu_flags);
- return;
- }
- card->wandev.critical = 0x11;
- ++card->statistics.poll_processed;
- /* This is to be changed later ??? */
- /*
- if( dev && dev->tbusy && !(flags->imask & 0x02) ) {
- printk(KERN_INFO "%s: Wpf_Poll: tbusy = 0x01, imask = 0x%02X\n", card->devname, flags->imask);
- }
- */
- if (flags->event)
- {
- fr_mbox_t *mbox = card->mbox;
- int err;
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- mbox->cmd.command = FR_READ_STATUS;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err)
- fr_event(card, err, mbox);
- }
- card->wandev.critical = 0;
- save_flags(host_cpu_flags);
- cli();
- if ((!card->irq_dis_if_send_count) && (!(--card->irq_dis_poll_count)))
- enable_irq(card->hw.irq);
- restore_flags(host_cpu_flags);
- card->state_tick = jiffies;
-}
-
-/****** 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
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- mbox->cmd.command = FR_READ_CODE_VERSION;
- 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
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- 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));
-
- 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
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- memcpy(mbox->data, conf, sizeof(fr_dlc_conf_t));
- mbox->cmd.dlci = (unsigned short) dlci;
- mbox->cmd.command = FR_SET_CONFIG;
- mbox->cmd.length = 0x0E;
- 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)
-{
- fr_mbox_t *mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
- do
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- if (card->hw.fwid == SFID_FR502)
- {
- fr502_intr_ctl_t *ictl = (void *) mbox->data;
- memset(ictl, 0, sizeof(fr502_intr_ctl_t));
- ictl->mode = mode;
- ictl->tx_len = mtu;
- mbox->cmd.length = sizeof(fr502_intr_ctl_t);
- }
- else
- {
- fr508_intr_ctl_t *ictl = (void *) mbox->data;
- memset(ictl, 0, sizeof(fr508_intr_ctl_t));
- ictl->mode = mode;
- ictl->tx_len = mtu;
- ictl->irq = card->hw.irq;
- 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
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- mbox->cmd.command = FR_COMM_ENABLE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- }
- while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-/*============================================================================
- * Disable communications.
- */
-static int fr_comm_disable(sdla_t * card)
-{
- fr_mbox_t *mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
- do
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- mbox->cmd.command = FR_COMM_DISABLE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- }
- while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-/*============================================================================
- * 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
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- mbox->cmd.command = FR_READ_ERROR_STATS;
- 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
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- mbox->cmd.command = FR_READ_STATISTICS;
- 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, int num)
-{
- fr_mbox_t *mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err, i;
- do
- {
- unsigned short *dlci_list = (void *) mbox->data;
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- for (i = 0; i < num; ++i)
- dlci_list[i] = card->u.f.node_dlci[i];
- mbox->cmd.length = num * sizeof(short);
- 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 list of DLCIs.
- */
-static int fr_activate_dlci(sdla_t * card, int dlci, int num)
-{
- fr_mbox_t *mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err, i;
- do
- {
- unsigned short *dlci_list = (void *) mbox->data;
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- for (i = 0; i < num; ++i)
- dlci_list[i] = card->u.f.node_dlci[i];
- mbox->cmd.length = num * sizeof(short);
- 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;
-}
-/*============================================================================
- * 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
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- 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;
-}
-/*============================================================================
- * Send a frame (S502 version).
- */
-static int fr502_send(sdla_t * card, int dlci, int attr, int len, void *buf)
-{
- fr_mbox_t *mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- memcpy(mbox->data, buf, len);
- 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));
-
- return err;
-}
-/*============================================================================
- * Send a frame (S508 version).
- */
-static int fr508_send(sdla_t * card, int dlci, int attr, int len, void *buf)
-{
- fr_mbox_t *mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- 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_buf_ctl_t *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 asynchronous 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:
- wanpipe_set_state(card, WAN_DISCONNECTED);
- return 1;
- case FRRES_CHANNEL_UP:
- 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 + 0x28 + i));
- printk(KERN_INFO "\n");
- break;
- case FRRES_DLCI_INACTIVE:
- printk(KERN_ERR "%s: DLCI %u is inactive!\n",
- card->devname, mbox->cmd.dlci);
- 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_dlc_conf_t cfg;
- 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);
- }
- else
- {
- if (status->state & 0x01)
- {
- printk(KERN_INFO
- "%s: DLCI %u has been deleted!\n",
- card->devname, dlci);
- if (dev && dev->start)
- set_chan_state(dev, WAN_DISCONNECTED);
- }
- else if (status->state & 0x02)
- {
- printk(KERN_INFO
- "%s: DLCI %u becomes active!\n",
- card->devname, dlci);
- chan = dev->priv;
- /* This flag is used for configuring specific
- DLCI(s) when they become active.
- */
- chan->dlci_configured = DLCI_CONFIG_PENDING;
- if (dev && dev->start)
- set_chan_state(dev, WAN_CONNECTED);
- }
- }
- }
- for (dev2 = card->wandev.dev; dev2; dev2 = dev2->slave)
- {
- chan = dev2->priv;
- if (chan->dlci_configured == DLCI_CONFIG_PENDING)
- {
- 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;
- printk(KERN_INFO "%s: CIR Disabled for %s\n",
- card->devname, chan->name);
- } 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;
- printk(KERN_INFO "%s: CIR Enabled for %s\n",
- card->devname, chan->name);
- }
- 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.
- */
- if (card->intr_mode == DLCI_LIST_INTR_MODE)
- read_DLCI_IB_mapping(card, chan);
- }
- }
- return 1;
-}
-/******* 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;
- int dlci_found = 0;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- mbox->cmd.command = FR_LIST_ACTIVE_DLCI;
- 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);
- for (; cnt; --cnt, ++list)
- {
- if (*list == chan->dlci)
- {
- dlci_found = 1;
- set_chan_state(dev, WAN_CONNECTED);
- break;
- }
- }
- if (!dlci_found)
- printk(KERN_INFO "%s: DLCI %u is inactive\n",
- card->devname, chan->dlci);
- }
-
- 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;
- unsigned long flags;
-
- save_flags(flags);
- cli();
-
- if (chan->state != state)
- {
- switch (state)
- {
- case WAN_CONNECTED:
- printk(KERN_INFO "%s: interface %s connected!\n"
- ,card->devname, dev->name);
- break;
- case WAN_CONNECTING:
- printk(KERN_INFO
- "%s: interface %s connecting...\n",
- card->devname, dev->name);
- break;
- case WAN_DISCONNECTED:
- printk(KERN_INFO
- "%s: interface %s disconnected!\n",
- card->devname, dev->name);
- break;
- }
- chan->state = state;
- }
- chan->state_tick = jiffies;
- restore_flags(flags);
-}
-
-/*============================================================================
- * Find network device by its channel number.
- */
-static struct net_device *find_channel(sdla_t * card, unsigned dlci)
-{
- struct net_device *dev;
- for (dev = card->wandev.dev; dev; dev = dev->slave)
- if (((fr_channel_t *) dev->priv)->dlci == dlci)
- break;
- return dev;
-}
-/*============================================================================
- * 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)
-{
- if (card->hw.fwid == SFID_FR508)
- {
- unsigned char sb = inb(card->hw.port);
- if (sb & 0x02)
- return 1;
- }
- else
- {
- fr502_flags_t *flags = card->flags;
- if (flags->tx_ready)
- return 1;
- flags->imask |= 0x02;
- }
- 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 && is_digit(*str); ++str, --len)
- val = (val * 10) + (*str - (unsigned) '0');
- return val;
-}
-
-/*==============================================================================
- * Process UDP call of type FPIPE8ND
- */
-
-static int process_udp_mgmt_pkt(char udp_pkt_src, sdla_t * card, struct sk_buff *skb, struct net_device *dev, int dlci, fr_channel_t * chan)
-{
- int c_retry = MAX_CMD_RETRY;
- unsigned char *data;
- unsigned char *buf;
- unsigned char buf2[5];
- unsigned int loops, frames, len;
- unsigned long data_ptr;
- unsigned short real_len, buffer_length;
- struct sk_buff *new_skb;
- unsigned char *sendpacket;
- fr_mbox_t *mbox = card->mbox;
- int err;
- struct timeval tv;
- int udp_mgmt_req_valid = 1;
- sendpacket = skb->data;
- memcpy(&buf2, &card->wandev.udp_port, 2);
- if ((data = kmalloc(2000, GFP_ATOMIC)) == NULL)
- {
- printk(KERN_INFO
- "%s: Error allocating memory for UDP management cmnd 0x%02X",
- card->devname, data[47]);
- ++chan->UDP_FPIPE_mgmt_kmalloc_err;
- return 1;
- }
- memcpy(data, sendpacket, skb->len);
- switch (data[47])
- {
- /* FPIPE_ENABLE_TRACE */
- case 0x41:
- /* FPIPE_DISABLE_TRACE */
- case 0x42:
- /* FPIPE_GET_TRACE_INFO */
- case 0x43:
- /* SET FT1 MODE */
- case 0x81:
- if (udp_pkt_src == UDP_PKT_FRM_NETWORK)
- {
- ++chan->UDP_FPIPE_mgmt_direction_err;
- udp_mgmt_req_valid = 0;
- break;
- }
- /* FPIPE_FT1_READ_STATUS */
- case 0x44:
- /* FT1 MONITOR STATUS */
- case 0x80:
- if (card->hw.fwid != SFID_FR508)
- {
- ++chan->UDP_FPIPE_mgmt_adptr_type_err;
- udp_mgmt_req_valid = 0;
- }
- break;
- default:
- break;
- }
- if (!udp_mgmt_req_valid)
- {
- /* set length to 0 */
- data[48] = data[49] = 0;
- /* set return code */
- data[50] = (card->hw.fwid != SFID_FR508) ? 0x1F : 0xCD;
- }
- else
- {
- switch (data[47])
- {
- /* FPIPE_ENABLE_TRACE */
- case 0x41:
- if (!TracingEnabled)
- {
- do
- {
- /* SET_TRACE_CONFIGURATION */
- mbox->cmd.command = 0x60;
- mbox->cmd.length = 1;
- mbox->cmd.dlci = 0x00;
- mbox->data[0] = 0x37;
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
- }
- while (err && c_retry-- && fr_event(card, err, mbox));
-
- if (err)
- {
- TracingEnabled = 0;
- /* set the return code */
- data[50] = mbox->cmd.result;
- mbox->cmd.length = 0;
- break;
- }
- /* get num_frames */
- sdla_peek(&card->hw, 0x9000, &num_frames, 2);
- sdla_peek(&card->hw, 0x9002, &curr_trace_addr,4);
- start_trace_addr = curr_trace_addr;
- /* MAX_SEND_BUFFER_SIZE -
- * sizeof(UDP_MGMT_PACKET) - 41 */
- available_buffer_space = 1926;
- /* set return code */
- data[50] = 0;
- }
- else
- {
- /* set return code to line trace already
- enabled */
- data[50] = 1;
- }
- mbox->cmd.length = 0;
- TracingEnabled = 1;
- break;
- /* FPIPE_DISABLE_TRACE */
- case 0x42:
- if (TracingEnabled)
- {
- do
- {
- /* SET_TRACE_CONFIGURATION */
- mbox->cmd.command = 0x60;
- mbox->cmd.length = 1;
- mbox->cmd.dlci = 0x00;
- mbox->data[0] = 0x36;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- }
- while (err && c_retry-- && fr_event(card, err, mbox));
- }
- /* set return code */
- data[50] = 0;
- mbox->cmd.length = 0;
- TracingEnabled = 0;
- break;
- /* FPIPE_GET_TRACE_INFO */
- case 0x43:
- /* Line trace cannot be performed on the 502 */
- if (!TracingEnabled)
- {
- /* set return code */
- data[50] = 1;
- mbox->cmd.length = 0;
- break;
- }
- buffer_length = 0;
- loops = (num_frames < 20) ? num_frames : 20;
- for (frames = 0; frames < loops; frames += 1)
- {
- sdla_peek(&card->hw, curr_trace_addr, &buf2, 1);
- /* no data on board so exit */
- if (buf2[0] == 0x00)
- break;
- /* 1+sizeof(FRAME_DATA) = 9 */
- if ((available_buffer_space - buffer_length) < 9)
- {
- /* indicate we have more frames on board
- and exit */
- data[62] |= 0x02;
- break;
- }
- /* get frame status */
- sdla_peek(&card->hw, curr_trace_addr + 0x05, &data[62 + buffer_length], 1);
- /* get time stamp */
- sdla_peek(&card->hw, curr_trace_addr + 0x06, &data[66 + buffer_length], 2);
- /* get frame length */
- sdla_peek(&card->hw, curr_trace_addr + 0x01, &data[64 + buffer_length], 2);
- /* get pointer to real data */
- sdla_peek(&card->hw, curr_trace_addr + 0x0C,&data_ptr, 4);
- /* see if we can fit the frame into the user buffer */
- memcpy(&real_len, &data[64 + buffer_length], 2);
- if (data_ptr == 0 || real_len + 8 > available_buffer_space)
- {
- data[63 + buffer_length] = 0x00;
- }
- else
- {
- /* we can take it next time */
- if (available_buffer_space - buffer_length < real_len + 8)
- {
- data[62] |= 0x02;
- break;
- }
- /* ok, get the frame */
- data[63 + buffer_length] = 0x01;
- /* get the data */
- sdla_peek(&card->hw, data_ptr, &data[68 + buffer_length], real_len);
- /* zero the opp flag to show we got the frame */
- buf2[0] = 0x00;
- sdla_poke(&card->hw, curr_trace_addr, &buf2, 1);
- /* now move onto the next frame */
- curr_trace_addr += 16;
- /* check if we passed the last address */
- if (curr_trace_addr >= (start_trace_addr + num_frames * 16))
- curr_trace_addr = start_trace_addr;
- /* update buffer length and make sure
- its even */
- if (data[63 + buffer_length] == 0x01)
- buffer_length += real_len - 1;
- /* for the header */
- buffer_length += 8;
- if (buffer_length & 0x0001)
- buffer_length += 1;
- }
- }
- /* ok now set the total number of frames passed in the
- high 5 bits */
- data[62] = (frames << 3) | data[62];
- /* set the data length */
- mbox->cmd.length = buffer_length;
- memcpy(&data[48], &buffer_length, 2);
- data[50] = 0;
- break;
- /* FPIPE_FT1_READ_STATUS */
- case 0x44:
- sdla_peek(&card->hw, 0xF020, &data[62], 2);
- data[48] = 2;
- data[49] = 0;
- data[50] = 0;
- mbox->cmd.length = 2;
- break;
- /* FPIPE_FLUSH_DRIVER_STATS */
- case 0x48:
- init_chan_statistics(chan);
- init_global_statistics(card);
- mbox->cmd.length = 0;
- break;
- case 0x49:
- do_gettimeofday(&tv);
- chan->router_up_time = tv.tv_sec - chan->router_start_time;
- *(unsigned long *) &data[62] = chan->router_up_time;
- mbox->cmd.length = 4;
- break;
- /* FPIPE_KILL_BOARD */
- case 0x50:
- break;
- /* FT1 MONITOR STATUS */
- case 0x80:
- if (data[62] == 1)
- {
- if (rCount++ != 0)
- {
- data[50] = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
- /* Disable FT1 MONITOR STATUS */
- if (data[62] == 0)
- {
- if (--rCount != 0)
- {
- data[50] = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
- default:
- do
- {
- memcpy(&mbox->cmd, &sendpacket[47], sizeof(fr_cmd_t));
- if (mbox->cmd.length)
- memcpy(&mbox->data, &sendpacket[62],mbox->cmd.length);
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- }
- while (err && c_retry-- && fr_event(card, err, mbox));
-
- if (!err)
- {
- ++chan->UDP_FPIPE_mgmt_adptr_cmnd_OK;
- memcpy(data, sendpacket, skb->len);
- memcpy(&data[47], &mbox->cmd, sizeof(fr_cmd_t));
- if (mbox->cmd.length)
- {
- memcpy(&data[62], &mbox->data,mbox->cmd.length);
- }
- }
- else
- {
- ++chan->UDP_FPIPE_mgmt_adptr_cmnd_timeout;
- }
- }
- }
- /* Fill UDP TTL */
- data[10] = card->wandev.ttl;
- len = reply_udp(data, mbox->cmd.length);
- if (udp_pkt_src == UDP_PKT_FRM_NETWORK)
- {
- err = fr508_send(card, dlci, 0, len, data);
- if (err)
- ++chan->UDP_FPIPE_mgmt_adptr_send_passed;
- else
- ++chan->UDP_FPIPE_mgmt_adptr_send_failed;
- dev_kfree_skb(skb);
- }
- 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, data, len);
- /* Decapsulate packet and pass it up the protocol
- stack */
- new_skb->dev = dev;
- buf = skb_pull(new_skb, 1); /* remove hardware header */
- if (!wanrouter_type_trans(new_skb, dev))
- {
- ++chan->UDP_FPIPE_mgmt_not_passed_to_stack;
- /* can't decapsulate packet */
- dev_kfree_skb(new_skb);
- }
- else
- {
- ++chan->UDP_FPIPE_mgmt_passed_to_stack;
- netif_rx(new_skb);
- }
- }
- else
- {
- ++chan->UDP_FPIPE_mgmt_no_socket;
- printk(KERN_INFO
- "%s: UDP mgmt cmnd, no socket buffers available!\n",
- card->devname);
- }
- }
- kfree(data);
- return 0;
-}
-/*==============================================================================
- * 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;
- /* The critical flag is unset here because we want to get into the
- ISR without the flag already set. The If_open sets the flag.
- */
- card->wandev.critical = 0;
- err = fr_set_intr_mode(card, 0x08, card->wandev.mtu);
- if (err == CMD_OK)
- {
- for (i = 0; i < MAX_INTR_TEST_COUNTER; i++)
- {
- /* Run command READ_CODE_VERSION */
- memset(&mb->cmd, 0, sizeof(fr_cmd_t));
- mb->cmd.length = 0;
- mb->cmd.command = 0x40;
- 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);
- if (err != CMD_OK)
- return err;
- card->wandev.critical = 1;
- return 0;
-}
-/*============================================================================
- * Process UDP call of type DRVSTATS.
- */
-static int process_udp_driver_call(char udp_pkt_src, sdla_t * card, struct sk_buff *skb, struct net_device *dev, int dlci, fr_channel_t * chan)
-{
- int c_retry = MAX_CMD_RETRY;
- unsigned char *sendpacket;
- unsigned char buf2[5];
- unsigned char *data;
- unsigned char *buf;
- unsigned int len;
- fr_mbox_t *mbox = card->mbox;
- struct sk_buff *new_skb;
- int err;
- sendpacket = skb->data;
- memcpy(&buf2, &card->wandev.udp_port, 2);
- if ((data = kmalloc(2000, GFP_ATOMIC)) == NULL)
- {
- printk(KERN_INFO
- "%s: Error allocating memory for UDP DRIVER STATS cmnd0x%02X"
- ,card->devname, data[45]);
- ++chan->UDP_DRVSTATS_mgmt_kmalloc_err;
- return 1;
- }
- memcpy(data, sendpacket, skb->len);
- switch (data[47])
- {
- case 0x45:
- *(unsigned long *) &data[62] = chan->if_send_entry;
- *(unsigned long *) &data[66] = chan->if_send_skb_null;
- *(unsigned long *) &data[70] = chan->if_send_broadcast;
- *(unsigned long *) &data[74] = chan->if_send_multicast;
- *(unsigned long *) &data[78] = chan->if_send_critical_ISR;
- *(unsigned long *) &data[82] = chan->if_send_critical_non_ISR;
- *(unsigned long *) &data[86] = chan->if_send_busy;
- *(unsigned long *) &data[90] = chan->if_send_busy_timeout;
- *(unsigned long *) &data[94] = chan->if_send_DRVSTATS_request;
- *(unsigned long *) &data[98] = chan->if_send_FPIPE_request;
- *(unsigned long *) &data[102] = chan->if_send_wan_disconnected;
- *(unsigned long *) &data[106] = chan->if_send_dlci_disconnected;
- *(unsigned long *) &data[110] = chan->if_send_no_bfrs;
- *(unsigned long *) &data[114] = chan->if_send_adptr_bfrs_full;
- *(unsigned long *) &data[118] = chan->if_send_bfrs_passed_to_adptr;
- *(unsigned long *) &data[120] = card->irq_dis_if_send_count;
- mbox->cmd.length = 62;
- break;
- case 0x46:
- *(unsigned long *) &data[62] = card->statistics.isr_entry;
- *(unsigned long *) &data[66] = card->statistics.isr_already_critical;
- *(unsigned long *) &data[70] = card->statistics.isr_rx;
- *(unsigned long *) &data[74] = card->statistics.isr_tx;
- *(unsigned long *) &data[78] = card->statistics.isr_intr_test;
- *(unsigned long *) &data[82] = card->statistics.isr_spurious;
- *(unsigned long *) &data[86] = card->statistics.isr_enable_tx_int;
- *(unsigned long *) &data[90] = card->statistics.tx_intr_dev_not_started;
- *(unsigned long *) &data[94] = card->statistics.rx_intr_corrupt_rx_bfr;
- *(unsigned long *) &data[98] = card->statistics.rx_intr_on_orphaned_DLCI;
- *(unsigned long *) &data[102] = chan->rx_intr_no_socket;
- *(unsigned long *) &data[106] = chan->rx_intr_dev_not_started;
- *(unsigned long *) &data[110] = chan->rx_intr_DRVSTATS_request;
- *(unsigned long *) &data[114] = chan->rx_intr_FPIPE_request;
- *(unsigned long *) &data[118] = chan->rx_intr_bfr_not_passed_to_stack;
- *(unsigned long *) &data[122] = chan->rx_intr_bfr_passed_to_stack;
- mbox->cmd.length = 64;
- break;
- case 0x47:
- *(unsigned long *) &data[62] = chan->UDP_FPIPE_mgmt_kmalloc_err;
- *(unsigned long *) &data[66] = chan->UDP_FPIPE_mgmt_adptr_type_err;
- *(unsigned long *) &data[70] = chan->UDP_FPIPE_mgmt_direction_err;
- *(unsigned long *) &data[74] = chan->UDP_FPIPE_mgmt_adptr_cmnd_timeout;
- *(unsigned long *) &data[78] = chan->UDP_FPIPE_mgmt_adptr_cmnd_OK;
- *(unsigned long *) &data[82] = chan->UDP_FPIPE_mgmt_adptr_send_passed;
- *(unsigned long *) &data[86] = chan->UDP_FPIPE_mgmt_adptr_send_failed;
- *(unsigned long *) &data[90] = chan->UDP_FPIPE_mgmt_no_socket;
- *(unsigned long *) &data[94] = chan->UDP_FPIPE_mgmt_not_passed_to_stack;
- *(unsigned long *) &data[98] = chan->UDP_FPIPE_mgmt_passed_to_stack;
- *(unsigned long *) &data[102] = chan->UDP_DRVSTATS_mgmt_kmalloc_err;
- *(unsigned long *) &data[106] = chan->UDP_DRVSTATS_mgmt_adptr_cmnd_timeout;
- *(unsigned long *) &data[110] = chan->UDP_DRVSTATS_mgmt_adptr_cmnd_OK;
- *(unsigned long *) &data[114] = chan->UDP_DRVSTATS_mgmt_adptr_send_passed;
- *(unsigned long *) &data[118] = chan->UDP_DRVSTATS_mgmt_adptr_send_failed;
- *(unsigned long *) &data[122] = chan->UDP_DRVSTATS_mgmt_no_socket;
- *(unsigned long *) &data[126] = chan->UDP_DRVSTATS_mgmt_not_passed_to_stack;
- *(unsigned long *) &data[130] = chan->UDP_DRVSTATS_mgmt_passed_to_stack;
- *(unsigned long *) &data[134] = card->statistics.poll_entry;
- *(unsigned long *) &data[138] = card->statistics.poll_already_critical;
- *(unsigned long *) &data[142] = card->statistics.poll_processed;
- *(unsigned long *) &data[144] = card->irq_dis_poll_count;
- mbox->cmd.length = 86;
- break;
- default:
- do
- {
- memcpy(&mbox->cmd, &sendpacket[47], sizeof(fr_cmd_t));
- if (mbox->cmd.length)
- memcpy(&mbox->data, &sendpacket[62], mbox->cmd.length);
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- }
- while (err && c_retry-- && fr_event(card, err, mbox));
-
- if (!err)
- {
- ++chan->UDP_DRVSTATS_mgmt_adptr_cmnd_OK;
- memcpy(data, sendpacket, skb->len);
- memcpy(&data[47], &mbox->cmd, sizeof(fr_cmd_t));
- if (mbox->cmd.length)
- memcpy(&data[62], &mbox->data, mbox->cmd.length);
- }
- else
- {
- ++chan->UDP_DRVSTATS_mgmt_adptr_cmnd_timeout;
- }
- }
- /* Fill UDP TTL */
- data[10] = card->wandev.ttl;
- len = reply_udp(data, mbox->cmd.length);
- if (udp_pkt_src == UDP_PKT_FRM_NETWORK)
- {
- err = fr508_send(card, dlci, 0, len, data);
- if (err)
- ++chan->UDP_DRVSTATS_mgmt_adptr_send_failed;
- else
- ++chan->UDP_DRVSTATS_mgmt_adptr_send_passed;
- dev_kfree_skb(skb);
- }
- 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, data, len);
- /* Decapsulate packet and pass it up the
- protocol stack */
- new_skb->dev = dev;
- /* remove hardware header */
- buf = skb_pull(new_skb, 1);
- if (!wanrouter_type_trans(new_skb, dev))
- {
- /* can't decapsulate packet */
- ++chan->UDP_DRVSTATS_mgmt_not_passed_to_stack;
- dev_kfree_skb(new_skb);
- }
- else
- {
- ++chan->UDP_DRVSTATS_mgmt_passed_to_stack;
- netif_rx(new_skb);
- }
- }
- else
- {
- ++chan->UDP_DRVSTATS_mgmt_no_socket;
- printk(KERN_INFO "%s: UDP mgmt cmnd, no socket buffers available!\n", card->devname);
- }
- }
- kfree(data);
- return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. DRVSTATS or FPIPE8ND ?
- */
-
-static int udp_pkt_type(struct sk_buff *skb, sdla_t * card)
-{
- unsigned char *sendpacket;
- unsigned char buf2[5];
- sendpacket = skb->data;
- memcpy(&buf2, &card->wandev.udp_port, 2);
- if (sendpacket[2] == 0x45 && /* IP packet */
- sendpacket[11] == 0x11 && /* UDP packet */
- sendpacket[24] == buf2[1] && /* UDP Port */
- sendpacket[25] == buf2[0] &&
- sendpacket[38] == 0x01)
- {
- if (sendpacket[30] == 0x46 && /* FPIPE8ND: Signature */
- sendpacket[31] == 0x50 &&
- sendpacket[32] == 0x49 &&
- sendpacket[33] == 0x50 &&
- sendpacket[34] == 0x45 &&
- sendpacket[35] == 0x38 &&
- sendpacket[36] == 0x4E &&
- sendpacket[37] == 0x44)
- {
- return UDP_FPIPE_TYPE;
- } else if (sendpacket[30] == 0x44 && /* DRVSTATS: Signature */
- sendpacket[31] == 0x52 &&
- sendpacket[32] == 0x56 &&
- sendpacket[33] == 0x53 &&
- sendpacket[34] == 0x54 &&
- sendpacket[35] == 0x41 &&
- sendpacket[36] == 0x54 &&
- sendpacket[37] == 0x53)
- {
- return UDP_DRVSTATS_TYPE;
- }
- else
- return UDP_INVALID_TYPE;
- }
- else
- return UDP_INVALID_TYPE;
-}
-/*==============================================================================
- * Initializes the Statistics values in the fr_channel structure.
- */
-
-void init_chan_statistics(fr_channel_t * chan)
-{
- chan->if_send_entry = 0;
- chan->if_send_skb_null = 0;
- chan->if_send_broadcast = 0;
- chan->if_send_multicast = 0;
- chan->if_send_critical_ISR = 0;
- chan->if_send_critical_non_ISR = 0;
- chan->if_send_busy = 0;
- chan->if_send_busy_timeout = 0;
- chan->if_send_FPIPE_request = 0;
- chan->if_send_DRVSTATS_request = 0;
- chan->if_send_wan_disconnected = 0;
- chan->if_send_dlci_disconnected = 0;
- chan->if_send_no_bfrs = 0;
- chan->if_send_adptr_bfrs_full = 0;
- chan->if_send_bfrs_passed_to_adptr = 0;
- chan->rx_intr_no_socket = 0;
- chan->rx_intr_dev_not_started = 0;
- chan->rx_intr_FPIPE_request = 0;
- chan->rx_intr_DRVSTATS_request = 0;
- chan->rx_intr_bfr_not_passed_to_stack = 0;
- chan->rx_intr_bfr_passed_to_stack = 0;
- chan->UDP_FPIPE_mgmt_kmalloc_err = 0;
- chan->UDP_FPIPE_mgmt_direction_err = 0;
- chan->UDP_FPIPE_mgmt_adptr_type_err = 0;
- chan->UDP_FPIPE_mgmt_adptr_cmnd_OK = 0;
- chan->UDP_FPIPE_mgmt_adptr_cmnd_timeout = 0;
- chan->UDP_FPIPE_mgmt_adptr_send_passed = 0;
- chan->UDP_FPIPE_mgmt_adptr_send_failed = 0;
- chan->UDP_FPIPE_mgmt_not_passed_to_stack = 0;
- chan->UDP_FPIPE_mgmt_passed_to_stack = 0;
- chan->UDP_FPIPE_mgmt_no_socket = 0;
- chan->UDP_DRVSTATS_mgmt_kmalloc_err = 0;
- chan->UDP_DRVSTATS_mgmt_adptr_cmnd_OK = 0;
- chan->UDP_DRVSTATS_mgmt_adptr_cmnd_timeout = 0;
- chan->UDP_DRVSTATS_mgmt_adptr_send_passed = 0;
- chan->UDP_DRVSTATS_mgmt_adptr_send_failed = 0;
- chan->UDP_DRVSTATS_mgmt_not_passed_to_stack = 0;
- chan->UDP_DRVSTATS_mgmt_passed_to_stack = 0;
- chan->UDP_DRVSTATS_mgmt_no_socket = 0;
-}
-/*==============================================================================
- * Initializes the Statistics values in the Sdla_t structure.
- */
-
-void init_global_statistics(sdla_t * card)
-{
- /* Intialize global statistics for a card */
- card->statistics.isr_entry = 0;
- card->statistics.isr_already_critical = 0;
- card->statistics.isr_rx = 0;
- card->statistics.isr_tx = 0;
- card->statistics.isr_intr_test = 0;
- card->statistics.isr_spurious = 0;
- card->statistics.isr_enable_tx_int = 0;
- card->statistics.rx_intr_corrupt_rx_bfr = 0;
- card->statistics.rx_intr_on_orphaned_DLCI = 0;
- card->statistics.tx_intr_dev_not_started = 0;
- card->statistics.poll_entry = 0;
- card->statistics.poll_already_critical = 0;
- card->statistics.poll_processed = 0;
-}
-
-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
- {
- memset(&mbox->cmd, 0, sizeof(fr_cmd_t));
- mbox->cmd.command = FR_READ_DLCI_IB_MAPPING;
- 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)
- {
- printk(KERN_INFO "%s: DLCI= %d, IB addr = %lx for %s\n"
- ,card->devname, result->dlci, result->addr_value ,chan->name);
- chan->IB_addr = result->addr_value;
- 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);
-}
-
-/****** End *****************************************************************/
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)