patch-2.3.21 linux/drivers/net/sdla_ppp.c
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- Lines: 2262
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.3.20/linux/drivers/net/sdla_ppp.c
- Orig date:
Wed Aug 18 11:36:42 1999
diff -u --recursive --new-file v2.3.20/linux/drivers/net/sdla_ppp.c linux/drivers/net/sdla_ppp.c
@@ -1,2261 +0,0 @@
-/*****************************************************************************
-* sdla_ppp.c WANPIPE(tm) Multiprotocol WAN Link Driver. PPP module.
-*
-* Author: 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.
-* ============================================================================
-* Mar 15, 1998 Alan Cox o 2.1.8x basic port.
-* Nov 27, 1997 Jaspreet Singh o Added protection against enabling of irqs
-* while they have been disabled.
-* Nov 24, 1997 Jaspreet Singh o Fixed another RACE condition caused by
-* disabling and enabling of irqs.
-* o Added new counters for stats on disable/enable* IRQs.
-* Nov 10, 1997 Jaspreet Singh o Initialized 'skb->mac.raw' to 'skb->data'
-* before every netif_rx().
-* o Free up the device structure in del_if().
-* Nov 07, 1997 Jaspreet Singh o Changed the delay to zero for Line tracing
-* command.
-* 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.
-* A new structure, "ppp_private_area", is added
-* to provide Driver Statistics.
-* Jul 21, 1997 Jaspreet Singh o Protected calls to sdla_peek() by adding
-* save_flags(), cli() and restore_flags().
-* Jul 07, 1997 Jaspreet Singh o Added configurable TTL for UDP packets
-* o Added ability to discard mulitcast and
-* broacast source addressed packets.
-* Jun 27, 1997 Jaspreet Singh o Added FT1 monitor capabilities
-* New case (0x25) statement in if_send routine.
-* Added a global variable rCount to keep track
-* of FT1 status enabled on the board.
-* May 22, 1997 Jaspreet Singh o Added change in the PPP_SET_CONFIG command for
-* 508 card to reflect changes in the new
-* ppp508.sfm for supporting:continous transmission
-* of Configure-Request packets without receiving a
-* reply
-* OR-ed 0x300 to conf_flags
-* o Changed connect_tmout from 900 to 0
-* May 21, 1997 Jaspreet Singh o Fixed UDP Management for multiple boards
-* Apr 25, 1997 Farhan Thawar o added UDP Management stuff
-* Mar 11, 1997 Farhan Thawar Version 3.1.1
-* o fixed (+1) bug in rx_intr()
-* o changed if_send() to return 0 if
-* wandev.critical() is true
-* o free socket buffer in if_send() if
-* returning 0
-* Jan 15, 1997 Gene Kozin Version 3.1.0
-* o implemented exec() entry point
-* Jan 06, 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/uaccess.h> /* copyto/from user */
-#define _GNUC_
-#include <linux/sdla_ppp.h> /* PPP firmware API definitions */
-
-/****** Defines & Macros ****************************************************/
-
-#ifdef _DEBUG_
-#define STATIC
-#else
-#define STATIC static
-#endif
-#define PPP_DFLT_MTU 1500 /* default MTU */
-#define PPP_MAX_MTU 4000 /* maximum MTU */
-#define PPP_HDR_LEN 1
-#define CONNECT_TIMEOUT (90*HZ) /* link connection timeout */
-#define HOLD_DOWN_TIME (30*HZ) /* link hold down time */
-
-/* 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 structure is placed in the private data area of the device structure.
- * The card structure used to occupy the private area but now the following
- * structure will incorporate the card structure along with PPP specific data
- */
-
-typedef struct ppp_private_area
-{
- sdla_t *card;
- unsigned long router_start_time; /*router start time in sec */
- unsigned long tick_counter; /*used for 5 second counter */
- unsigned mc; /*multicast support on or off */
- /* PPP specific 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_DRVSTATS_request;
- unsigned long if_send_PTPIPE_request;
- unsigned long if_send_wan_disconnected;
- unsigned long if_send_adptr_bfrs_full;
- unsigned long if_send_protocol_error;
- unsigned long if_send_tx_int_enabled;
- unsigned long if_send_bfr_passed_to_adptr;
- unsigned long rx_intr_no_socket;
- unsigned long rx_intr_DRVSTATS_request;
- unsigned long rx_intr_PTPIPE_request;
- unsigned long rx_intr_bfr_not_passed_to_stack;
- unsigned long rx_intr_bfr_passed_to_stack;
- unsigned long UDP_PTPIPE_mgmt_kmalloc_err;
- unsigned long UDP_PTPIPE_mgmt_adptr_type_err;
- unsigned long UDP_PTPIPE_mgmt_direction_err;
- unsigned long UDP_PTPIPE_mgmt_adptr_cmnd_timeout;
- unsigned long UDP_PTPIPE_mgmt_adptr_cmnd_OK;
- unsigned long UDP_PTPIPE_mgmt_passed_to_adptr;
- unsigned long UDP_PTPIPE_mgmt_passed_to_stack;
- unsigned long UDP_PTPIPE_mgmt_no_socket;
- unsigned long UDP_DRVSTATS_mgmt_kmalloc_err;
- unsigned long UDP_DRVSTATS_mgmt_adptr_type_err;
- unsigned long UDP_DRVSTATS_mgmt_direction_err;
- unsigned long UDP_DRVSTATS_mgmt_adptr_cmnd_timeout;
- unsigned long UDP_DRVSTATS_mgmt_adptr_cmnd_OK;
- unsigned long UDP_DRVSTATS_mgmt_passed_to_adptr;
- unsigned long UDP_DRVSTATS_mgmt_passed_to_stack;
- unsigned long UDP_DRVSTATS_mgmt_no_socket;
- unsigned long router_up_time;
-} ppp_private_area_t;
-
-/* variable for keeping track of enabling/disabling FT1 monitor status */
-
-static int rCount = 0;
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/****** 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 wpp_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 enet_statistics *if_stats(struct net_device *dev);
-/* PPP firmware interface functions */
-static int ppp_read_version(sdla_t * card, char *str);
-static int ppp_configure(sdla_t * card, void *data);
-static int ppp_set_intr_mode(sdla_t * card, unsigned mode);
-static int ppp_comm_enable(sdla_t * card);
-static int ppp_comm_disable(sdla_t * card);
-static int ppp_get_err_stats(sdla_t * card);
-static int ppp_send(sdla_t * card, void *data, unsigned len, unsigned proto);
-static int ppp_error(sdla_t * card, int err, ppp_mbox_t * mb);
-/* Interrupt handlers */
-STATIC void wpp_isr(sdla_t * card);
-static void rx_intr(sdla_t * card);
-static void tx_intr(sdla_t * card);
-/* Background polling routines */
-static void wpp_poll(sdla_t * card);
-static void poll_active(sdla_t * card);
-static void poll_connecting(sdla_t * card);
-static void poll_disconnected(sdla_t * card);
-/* Miscellaneous functions */
-static int config502(sdla_t * card);
-static int config508(sdla_t * card);
-static void show_disc_cause(sdla_t * card, unsigned cause);
-static unsigned char bps_to_speed_code(unsigned long bps);
-static int reply_udp(unsigned char *data, unsigned int mbox_len);
-static int process_udp_mgmt_pkt(char udp_pkt_src, sdla_t * card, struct sk_buff *skb, struct net_device *dev, ppp_private_area_t * ppp_priv_area);
-static int process_udp_driver_call(char udp_pkt_src, sdla_t * card, struct sk_buff *skb, struct net_device *dev, ppp_private_area_t * ppp_priv_area);
-static void init_ppp_tx_rx_buff(sdla_t * card);
-static int intr_test(sdla_t * card);
-static int udp_pkt_type(struct sk_buff *skb, sdla_t * card);
-static void init_ppp_priv_struct(ppp_private_area_t * ppp_priv_area);
-static void init_global_statistics(sdla_t * card);
-static int Intr_test_counter;
-static char TracingEnabled;
-static unsigned long curr_trace_addr;
-static unsigned long start_trace_addr;
-static unsigned short available_buffer_space;
-/* 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, unsigned short proto);
-
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * PPP 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 wpp_init(sdla_t * card, wandev_conf_t * conf)
-{
- union {
- char str[80];
- } u;
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_PPP) {
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id);
- return -EINVAL;
- }
- /* Initialize protocol-specific fields */
- switch (card->hw.fwid) {
- case SFID_PPP502:
- card->mbox = (void *) (card->hw.dpmbase + PPP502_MB_OFFS);
- card->flags = (void *) (card->hw.dpmbase + PPP502_FLG_OFFS);
- break;
- case SFID_PPP508:
- card->mbox = (void *) (card->hw.dpmbase + PPP508_MB_OFFS);
- card->flags = (void *) (card->hw.dpmbase + PPP508_FLG_OFFS);
- 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 (ppp_read_version(card, NULL) || ppp_read_version(card, u.str))
- return -EIO;
- printk(KERN_INFO "%s: running PPP firmware v%s\n", card->devname, u.str);
- /* Adjust configuration and set defaults */
- card->wandev.mtu = (conf->mtu) ?
- min(conf->mtu, PPP_MAX_MTU) : PPP_DFLT_MTU;
- card->wandev.bps = conf->bps;
- card->wandev.interface = conf->interface;
- card->wandev.clocking = conf->clocking;
- card->wandev.station = conf->station;
- card->isr = &wpp_isr;
- card->poll = &wpp_poll;
- card->exec = &wpp_exec;
- card->wandev.update = &update;
- card->wandev.new_if = &new_if;
- card->wandev.del_if = &del_if;
- card->wandev.state = WAN_DISCONNECTED;
- card->wandev.udp_port = conf->udp_port;
- card->wandev.ttl = conf->ttl;
- card->irq_dis_if_send_count = 0;
- card->irq_dis_poll_count = 0;
- TracingEnabled = 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;
- /* initialize global statistics */
- init_global_statistics(card);
- 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;
- ppp_get_err_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;
- ppp_private_area_t *ppp_priv_area;
- if (wandev->ndev)
- return -EEXIST;
- 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 */
- ppp_priv_area = kmalloc(sizeof(ppp_private_area_t), GFP_KERNEL);
- if (ppp_priv_area == NULL)
- return -ENOMEM;
- memset(ppp_priv_area, 0, sizeof(ppp_private_area_t));
- ppp_priv_area->card = card;
- /* initialize data */
- strcpy(card->u.p.if_name, conf->name);
- /* initialize data in ppp_private_area structure */
- init_ppp_priv_struct(ppp_priv_area);
- ppp_priv_area->mc = conf->mc;
- /* prepare network device data space for registration */
- dev->name = card->u.p.if_name;
- dev->init = &if_init;
- dev->priv = ppp_priv_area;
- 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 wpp_exec(struct sdla *card, void *u_cmd, void *u_data)
-{
- ppp_mbox_t *mbox = card->mbox;
- int len;
- if(copy_from_user((void *) &mbox->cmd, u_cmd, sizeof(ppp_cmd_t)))
- return -EFAULT;
- len = mbox->cmd.length;
- if (len) {
- if(copy_from_user((void *) &mbox->data, u_data, len))
- return -EFAULT;
- }
- /* execute command */
- if (!sdla_exec(mbox))
- return -EIO;
- /* return result */
- if(copy_to_user(u_cmd, (void *) &mbox->cmd, sizeof(ppp_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)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->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_PPP; /* ARP h/w type */
- dev->mtu = wandev->mtu;
- dev->hard_header_len = PPP_HDR_LEN; /* media header length */
- /* 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 = 100;
- /* Initialize socket buffers */
- dev_init_buffers(dev);
- return 0;
-}
-
-/*============================================================================
- * Open network interface.
- * o enable communications and interrupts.
- * o prevent module from unloading by incrementing use count
- *
- * Return 0 if O.k. or errno.
- */
-
-static int if_open(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
- ppp_flags_t *flags = card->flags;
- struct timeval tv;
- int err = 0;
- if (dev->start)
- return -EBUSY; /* only one open is allowed */
- if (test_and_set_bit(0, (void *) &card->wandev.critical))
- return -EAGAIN;
- if ((card->hw.fwid == SFID_PPP502) ? config502(card) : config508(card)) {
- err = -EIO;
- card->wandev.critical = 0;
- return err;
- }
- Intr_test_counter = 0;
- 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);
- /* Initialize Rx/Tx buffer control fields */
- init_ppp_tx_rx_buff(card);
- if (ppp_set_intr_mode(card, 0x03)) {
- err = -EIO;
- card->wandev.critical = 0;
- return err;
- }
- flags->imask &= ~0x02;
- if (ppp_comm_enable(card)) {
- err = -EIO;
- card->wandev.critical = 0;
- return err;
- }
- wanpipe_set_state(card, WAN_CONNECTING);
- wanpipe_open(card);
- dev->mtu = min(dev->mtu, card->wandev.mtu);
- dev->interrupt = 0;
- dev->tbusy = 0;
- dev->start = 1;
- do_gettimeofday(&tv);
- ppp_priv_area->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)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
- if (test_and_set_bit(0, (void *) &card->wandev.critical))
- return -EAGAIN;
- dev->start = 0;
- wanpipe_close(card);
- wanpipe_set_state(card, WAN_DISCONNECTED);
- ppp_set_intr_mode(card, 0);
- ppp_comm_disable(card);
- card->wandev.critical = 0;
- return 0;
-}
-
-/*============================================================================
- * Build media header.
- *
- * The trick here is to put packet type (Ethertype) into 'protocol' field of
- * the socket buffer, so that we don't forget it. If packet type is not
- * supported, set skb->protocol to 0 and discard packet later.
- *
- * Return: media header length.
- */
-
-static int if_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len)
-{
- switch (type)
- {
- case ETH_P_IP:
- case ETH_P_IPX:
- skb->protocol = type;
- break;
- default:
- skb->protocol = 0;
- }
- return PPP_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;
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->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 execute adapter send command.
- * o free socket buffer
- *
- * Return: 0 complete (socket buffer must be freed)
- * non-0 packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- * bottom half" (with interrupts enabled).
- * 2. Setting tbusy flag will inhibit further transmit requests from the
- * protocol stack and can be used for flow control with protocol layer.
- */
-
-static int if_send(struct sk_buff *skb, struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
- unsigned char *sendpacket;
- unsigned long check_braddr, check_mcaddr;
- unsigned long host_cpu_flags;
- ppp_flags_t *flags = card->flags;
- int retry = 0;
- int err, udp_type;
- ++ppp_priv_area->if_send_entry;
- if (skb == NULL) {
- /* If we get here, some higher layer thinks we've missed an
- * tx-done interrupt.
- */
- printk(KERN_INFO "%s: interface %s got kicked!\n",
- card->devname, dev->name);
- ++ppp_priv_area->if_send_skb_null;
- mark_bh(NET_BH);
- return 0;
- }
- 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.
- */
- ++ppp_priv_area->if_send_busy;
- ++card->wandev.stats.collisions;
- if ((jiffies - ppp_priv_area->tick_counter) < (5 * HZ)) {
- return 1;
- }
- printk(KERN_INFO "%s: Transmit times out\n", card->devname);
- ++ppp_priv_area->if_send_busy_timeout;
- /* unbusy the card (because only one interface per card) */
- dev->tbusy = 0;
- }
- sendpacket = skb->data;
- udp_type = udp_pkt_type(skb, card);
- if (udp_type == UDP_DRVSTATS_TYPE) {
- ++ppp_priv_area->if_send_DRVSTATS_request;
- process_udp_driver_call(UDP_PKT_FRM_STACK, card, skb, dev,
- ppp_priv_area);
- dev_kfree_skb(skb);
- return 0;
- } else if (udp_type == UDP_PTPIPE_TYPE)
- ++ppp_priv_area->if_send_PTPIPE_request;
- /* retreive source address in two forms: broadcast & multicast */
- check_braddr = sendpacket[15];
- check_mcaddr = sendpacket[12];
- check_braddr = check_braddr << 8;
- check_mcaddr = check_mcaddr << 8;
- check_braddr |= sendpacket[14];
- check_mcaddr |= sendpacket[13];
- check_braddr = check_braddr << 8;
- check_mcaddr = check_mcaddr << 8;
- check_braddr |= sendpacket[13];
- check_mcaddr |= sendpacket[14];
- check_braddr = check_braddr << 8;
- check_mcaddr = check_mcaddr << 8;
- check_braddr |= sendpacket[12];
- check_mcaddr |= sendpacket[15];
- /* if the Source Address is a Multicast address */
- if ((ppp_priv_area->mc == WANOPT_NO) && (check_mcaddr >= 0xE0000001)
- && (check_mcaddr <= 0xFFFFFFFE)) {
- printk(KERN_INFO "%s: Mutlicast Src. Addr. silently discarded\n"
- ,card->devname);
- dev_kfree_skb(skb);
- ++ppp_priv_area->if_send_multicast;
- ++card->wandev.stats.tx_dropped;
- 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) {
- /* If the critical flag is set due to an Interrupt
- * then set enable transmit interrupt flag to enable
- * transmit interrupt. (delay interrupt)
- */
- card->wandev.enable_tx_int = 1;
- dev->tbusy = 1;
- /* set the counter to see if we get the interrupt in
- * 5 seconds.
- */
- ppp_priv_area->tick_counter = jiffies;
- ++ppp_priv_area->if_send_critical_ISR;
- 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;
- }
- dev_kfree_skb(skb);
- ++ppp_priv_area->if_send_critical_non_ISR;
- 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;
- }
- if (udp_type == UDP_PTPIPE_TYPE) {
- err = process_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb,
- dev, ppp_priv_area);
- } else if (card->wandev.state != WAN_CONNECTED) {
- ++ppp_priv_area->if_send_wan_disconnected;
- ++card->wandev.stats.tx_dropped;
- } else if (!skb->protocol) {
- ++ppp_priv_area->if_send_protocol_error;
- ++card->wandev.stats.tx_errors;
- } else {
- /*If it's IPX change the network numbers to 0 if they're ours. */
- if (skb->protocol == ETH_P_IPX) {
- if (card->wandev.enable_IPX) {
- switch_net_numbers(skb->data,
- card->wandev.network_number, 0);
- } else {
- ++card->wandev.stats.tx_dropped;
- goto tx_done;
- }
- }
- if (ppp_send(card, skb->data, skb->len, skb->protocol)) {
- retry = 1;
- dev->tbusy = 1;
- ++ppp_priv_area->if_send_adptr_bfrs_full;
- ++ppp_priv_area->if_send_tx_int_enabled;
- ppp_priv_area->tick_counter = jiffies;
- ++card->wandev.stats.tx_errors;
- flags->imask |= 0x02; /* unmask Tx interrupts */
- } else {
- ++ppp_priv_area->if_send_bfr_passed_to_adptr;
- ++card->wandev.stats.tx_packets;
- card->wandev.stats.tx_bytes += skb->len;
- }
- }
-tx_done:
- 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 length of reply.
- */
-
-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 + 60;
- /* fill in UDP reply */
- data[36] = 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[24], &temp, 2);
- /* swap UDP ports */
- memcpy(&temp, &data[20], 2);
- memcpy(&data[20], &data[22], 2);
- memcpy(&data[22], &temp, 2);
- /* add UDP pseudo header */
- temp = 0x1100;
- memcpy(&data[udp_length + 20], &temp, 2);
- temp = (udp_length << 8) | (udp_length >> 8);
- memcpy(&data[udp_length + 22], &temp, 2);
- /* calculate UDP checksum */
- data[26] = data[27] = 0;
- sum = 0;
- for (i = 0; i < udp_length + 12; i += 2) {
- memcpy(&temp, &data[12 + 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[26], &temp, 2);
- /* fill in IP length */
- ip_length = udp_length + 20;
- temp = (ip_length << 8) | (ip_length >> 8);
- memcpy(&data[2], &temp, 2);
- /* swap IP addresses */
- memcpy(&temp, &data[12], 2);
- memcpy(&data[12], &data[16], 2);
- memcpy(&data[16], &temp, 2);
- memcpy(&temp, &data[14], 2);
- memcpy(&data[14], &data[18], 2);
- memcpy(&data[18], &temp, 2);
- /* fill in IP checksum */
- data[10] = data[11] = 0;
- sum = 0;
- for (i = 0; i < 20; i += 2) {
- memcpy(&temp, &data[i], 2);
- sum += (unsigned long) temp;
- }
- while (sum >> 16) {
- sum = (sum & 0xffffUL) + (sum >> 16);
- }
- temp = (unsigned short) sum;
- temp = ~temp;
- if (temp == 0)
- temp = 0xffff;
- memcpy(&data[10], &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[6] << 24) +
- (sendpacket[7] << 16) + (sendpacket[8] << 8) +
- sendpacket[9]);
- if (!incoming) {
- /* If the destination network number is ours, make it 0 */
- if (pnetwork_number == network_number) {
- sendpacket[6] = sendpacket[7] = sendpacket[8] =
- sendpacket[9] = 0x00;
- }
- } else {
- /* If the incoming network is 0, make it ours */
- if (pnetwork_number == 0) {
- sendpacket[6] = (unsigned char) (network_number >> 24);
- sendpacket[7] = (unsigned char) ((network_number &
- 0x00FF0000) >> 16);
- sendpacket[8] = (unsigned char) ((network_number &
- 0x0000FF00) >> 8);
- sendpacket[9] = (unsigned char) (network_number &
- 0x000000FF);
- }
- }
- pnetwork_number = (unsigned long) ((sendpacket[18] << 24) +
- (sendpacket[19] << 16) + (sendpacket[20] << 8) +
- sendpacket[21]);
- if (!incoming) {
- /* If the source network is ours, make it 0 */
- if (pnetwork_number == network_number) {
- sendpacket[18] = sendpacket[19] = sendpacket[20] =
- sendpacket[21] = 0x00;
- }
- } else {
- /* If the source network is 0, make it ours */
- if (pnetwork_number == 0) {
- sendpacket[18] = (unsigned char) (network_number >> 24);
- sendpacket[19] = (unsigned char) ((network_number &
- 0x00FF0000) >> 16);
- sendpacket[20] = (unsigned char) ((network_number &
- 0x0000FF00) >> 8);
- sendpacket[21] = (unsigned char) (network_number &
- 0x000000FF);
- }
- }
-} /* switch_net_numbers */
-
-/*============================================================================
- * Get Ethernet-style interface statistics.
- * Return a pointer to struct enet_statistics.
- */
-
-static struct enet_statistics *if_stats(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card;
-
- /*
- * Device is down:No statistics
- */
-
- if(ppp_priv_area==NULL)
- return NULL;
-
- card = ppp_priv_area->card;
- return &card->wandev.stats;
-}
-
-/****** PPP Firmware Interface Functions ************************************/
-
-/*============================================================================
- * Read firmware code version.
- * Put code version as ASCII string in str.
- */
-
-static int ppp_read_version(sdla_t * card, char *str)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_READ_CODE_VERSION;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- else if (str) {
- int len = mb->cmd.length;
- memcpy(str, mb->data, len);
- str[len] = '\0';
- }
- return err;
-}
-
-/*============================================================================
- * Configure PPP firmware.
- */
-
-static int ppp_configure(sdla_t * card, void *data)
-{
- ppp_mbox_t *mb = card->mbox;
- int data_len = (card->hw.fwid == SFID_PPP502) ?
- sizeof(ppp502_conf_t) : sizeof(ppp508_conf_t);
- int err;
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- memcpy(mb->data, data, data_len);
- mb->cmd.length = data_len;
- mb->cmd.command = PPP_SET_CONFIG;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- return err;
-}
-
-/*============================================================================
- * Set interrupt mode.
- */
-
-static int ppp_set_intr_mode(sdla_t * card, unsigned mode)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->data[0] = mode;
- switch (card->hw.fwid) {
- case SFID_PPP502:
- mb->cmd.length = 1;
- break;
- case SFID_PPP508:
- default:
- mb->data[1] = card->hw.irq;
- mb->cmd.length = 2;
- }
- mb->cmd.command = PPP_SET_INTR_FLAGS;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- return err;
-}
-
-/*============================================================================
- * Enable communications.
- */
-
-static int ppp_comm_enable(sdla_t * card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_COMM_ENABLE;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- return err;
-}
-
-/*============================================================================
- * Disable communications.
- */
-
-static int ppp_comm_disable(sdla_t * card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_COMM_DISABLE;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- return err;
-}
-
-/*============================================================================
- * Get communications error statistics.
- */
-
-static int ppp_get_err_stats(sdla_t * card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_READ_ERROR_STATS;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err == CMD_OK) {
- ppp_err_stats_t *stats = (void *) mb->data;
- card->wandev.stats.rx_over_errors = stats->rx_overrun;
- card->wandev.stats.rx_crc_errors = stats->rx_bad_crc;
- card->wandev.stats.rx_missed_errors = stats->rx_abort;
- card->wandev.stats.rx_length_errors = stats->rx_lost;
- card->wandev.stats.tx_aborted_errors = stats->tx_abort;
- } else
- ppp_error(card, err, mb);
- return err;
-}
-
-/*============================================================================
- * Send packet.
- * Return: 0 - o.k.
- * 1 - no transmit buffers available
- */
-
-static int ppp_send(sdla_t * card, void *data, unsigned len, unsigned proto)
-{
- ppp_buf_ctl_t *txbuf = card->u.p.txbuf;
- unsigned long addr;
- if (txbuf->flag)
- return 1
- ;
- if (card->hw.fwid == SFID_PPP502)
- addr = (txbuf->buf.o_p[1] << 8) + txbuf->buf.o_p[0];
- else
- addr = txbuf->buf.ptr;
- sdla_poke(&card->hw, addr, data, len);
- txbuf->length = len; /* frame length */
- if (proto == ETH_P_IPX)
- txbuf->proto = 0x01; /* protocol ID */
- txbuf->flag = 1; /* start transmission */
- /* Update transmit buffer control fields */
- card->u.p.txbuf = ++txbuf;
- if ((void *) txbuf > card->u.p.txbuf_last)
- card->u.p.txbuf = card->u.p.txbuf_base;
- return 0;
-}
-
-/****** Firmware Error Handler **********************************************/
-
-/*============================================================================
- * Firmware error handler.
- * This routine is called whenever firmware command returns non-zero
- * return code.
- *
- * Return zero if previous command has to be cancelled.
- */
-
-static int ppp_error(sdla_t * card, int err, ppp_mbox_t * mb)
-{
- unsigned cmd = mb->cmd.command;
- switch (err) {
- case CMD_TIMEOUT:
- printk(KERN_ERR "%s: command 0x%02X timed out!\n",
- card->devname, cmd);
- break;
- default:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n"
- ,card->devname, cmd, err);
- }
- return 0;
-}
-
-/****** Interrupt Handlers **************************************************/
-
-/*============================================================================
- * PPP interrupt service routine.
- */
-
-STATIC void wpp_isr(sdla_t * card)
-{
- ppp_flags_t *flags = card->flags;
- char *ptr = &flags->iflag;
- unsigned long host_cpu_flags;
- struct net_device *dev = card->wandev.dev;
- int i;
- card->in_isr = 1;
- ++card->statistics.isr_entry;
- if (test_and_set_bit(0, (void *) &card->wandev.critical)) {
- ++card->statistics.isr_already_critical;
- printk(KERN_INFO "%s: Critical while in ISR!\n", card->devname);
- card->in_isr = 0;
- return;
- }
- /* For all interrupts set the critical flag to CRITICAL_IN_ISR.
- * 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->buff_int_mode_unbusy = 0;
- switch (flags->iflag) {
- case 0x01: /* receive interrupt */
- ++card->statistics.isr_rx;
- rx_intr(card);
- break;
- case 0x02: /* transmit interrupt */
- ++card->statistics.isr_tx;
- flags->imask &= ~0x02;
- dev->tbusy = 0;
- card->buff_int_mode_unbusy = 1;
- break;
- case 0x08:
- ++Intr_test_counter;
- ++card->statistics.isr_intr_test;
- break;
- default: /* unexpected interrupt */
- ++card->statistics.isr_spurious;
- printk(KERN_INFO "%s: spurious interrupt 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");
- }
- /* The critical flag is set to CRITICAL_INTR_HANDLED to let the
- * if_send call know that the interrupt is handled so that
- * transmit interrupts are not enabled again.
- */
- card->wandev.critical = CRITICAL_INTR_HANDLED;
- /* If the enable transmit interrupt flag is set then enable transmit
- * interrupt on the board. This only goes through if if_send is called
- * and the critical flag is set due to an Interrupt.
- */
- if (card->wandev.enable_tx_int) {
- flags->imask |= 0x02;
- card->wandev.enable_tx_int = 0;
- ++card->statistics.isr_enable_tx_int;
- }
- save_flags(host_cpu_flags);
- cli();
- card->in_isr = 0;
- flags->iflag = 0;
- card->wandev.critical = 0;
- restore_flags(host_cpu_flags);
- if (card->buff_int_mode_unbusy)
- mark_bh(NET_BH);
-}
-
-/*============================================================================
- * Receive interrupt handler.
- */
-
-static void rx_intr(sdla_t * card)
-{
- ppp_buf_ctl_t *rxbuf = card->rxmb;
- struct net_device *dev = card->wandev.dev;
- ppp_private_area_t *ppp_priv_area;
- struct sk_buff *skb;
- unsigned len;
- void *buf;
- int i, err;
- ppp_flags_t *flags = card->flags;
- char *ptr = &flags->iflag;
- int udp_type;
- if (rxbuf->flag != 0x01) {
- printk(KERN_INFO
- "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
- card->devname, (unsigned) rxbuf, rxbuf->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;
- }
- if (dev && dev->start) {
- len = rxbuf->length;
- ppp_priv_area = dev->priv;
- /* Allocate socket buffer */
- skb = dev_alloc_skb(len);
- if (skb != NULL) {
- /* Copy data to the socket buffer */
- if (card->hw.fwid == SFID_PPP502) {
- unsigned addr = (rxbuf->buf.o_p[1] << 8) +
- rxbuf->buf.o_p[0];
- buf = skb_put(skb, len);
- sdla_peek(&card->hw, addr, buf, len);
- } else {
- unsigned addr = rxbuf->buf.ptr;
- if ((addr + len) > card->u.p.rx_top + 1) {
- unsigned tmp = card->u.p.rx_top - addr
- + 1;
- buf = skb_put(skb, tmp);
- sdla_peek(&card->hw, addr, buf, tmp);
- addr = card->u.p.rx_base;
- len -= tmp;
- }
- buf = skb_put(skb, len);
- sdla_peek(&card->hw, addr, buf, len);
- }
- /* Decapsulate packet */
- switch (rxbuf->proto) {
- case 0x00:
- skb->protocol = htons(ETH_P_IP);
- break;
- case 0x01:
- skb->protocol = htons(ETH_P_IPX);
- break;
- }
- udp_type = udp_pkt_type(skb, card);
- if (udp_type == UDP_DRVSTATS_TYPE) {
- ++ppp_priv_area->rx_intr_DRVSTATS_request;
- process_udp_driver_call(
- UDP_PKT_FRM_NETWORK, card, skb,
- dev, ppp_priv_area);
- dev_kfree_skb(skb);
- } else if (udp_type == UDP_PTPIPE_TYPE) {
- ++ppp_priv_area->rx_intr_PTPIPE_request;
- err = process_udp_mgmt_pkt(
- UDP_PKT_FRM_NETWORK, card,
- skb, dev, ppp_priv_area);
- dev_kfree_skb(skb);
- } else if (handle_IPXWAN(skb->data, card->devname, card->wandev.enable_IPX, card->wandev.network_number, skb->protocol)) {
- if (card->wandev.enable_IPX) {
- ppp_send(card, skb->data, skb->len, ETH_P_IPX);
- dev_kfree_skb(skb);
- } else {
- ++card->wandev.stats.rx_dropped;
- }
- } else {
- /* Pass it up the protocol stack */
- skb->dev = dev;
- skb->mac.raw = skb->data;
- netif_rx(skb);
- ++card->wandev.stats.rx_packets;
- card->wandev.stats.rx_bytes += skb->len;
- ++ppp_priv_area->rx_intr_bfr_passed_to_stack;
- }
- } else {
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- ++card->wandev.stats.rx_dropped;
- ++ppp_priv_area->rx_intr_no_socket;
- }
- } else
- ++card->statistics.rx_intr_dev_not_started;
- /* Release buffer element and calculate a pointer to the next one */
- rxbuf->flag = (card->hw.fwid == SFID_PPP502) ? 0xFF : 0x00;
- card->rxmb = ++rxbuf;
- if ((void *) rxbuf > card->u.p.rxbuf_last)
- card->rxmb = card->u.p.rxbuf_base;
-}
-
-/*============================================================================
- * Transmit interrupt handler.
- */
-
-static void tx_intr(sdla_t * card)
-{
- struct net_device *dev = card->wandev.dev;
- if (!dev || !dev->start) {
- ++card->statistics.tx_intr_dev_not_started;
- return;
- }
- dev->tbusy = 0;
- mark_bh(NET_BH);
-}
-
-static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_IPX, unsigned long network_number, unsigned short proto)
-{
- int i;
- if (proto == htons(ETH_P_IPX)) {
- /* 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 pass it up the stack. */
- return 0;
- }
- if (sendpacket[16] == 0x90 &&
- sendpacket[17] == 0x04) {
- /* It's IPXWAN */
- if (sendpacket[2] == 0x02 &&
- sendpacket[34] == 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 = 41; 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[34] = 0x01;
- printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n", devname);
- } else if (sendpacket[34] == 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[34] = 0x03;
- /* Set the router name */
- sendpacket[51] = 'P';
- sendpacket[52] = 'T';
- sendpacket[53] = 'P';
- sendpacket[54] = 'I';
- sendpacket[55] = 'P';
- sendpacket[56] = 'E';
- sendpacket[57] = '-';
- sendpacket[58] = CVHexToAscii(network_number >> 28);
- sendpacket[59] = CVHexToAscii((network_number & 0x0F000000) >> 24);
- sendpacket[60] = CVHexToAscii((network_number & 0x00F00000) >> 20);
- sendpacket[61] = CVHexToAscii((network_number & 0x000F0000) >> 16);
- sendpacket[62] = CVHexToAscii((network_number & 0x0000F000) >> 12);
- sendpacket[63] = CVHexToAscii((network_number & 0x00000F00) >> 8);
- sendpacket[64] = CVHexToAscii((network_number & 0x000000F0) >> 4);
- sendpacket[65] = CVHexToAscii(network_number & 0x0000000F);
- for (i = 66; i < 99; 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[35] = (unsigned char) (network_number >> 24);
- sendpacket[36] = (unsigned char) ((network_number & 0x00FF0000) >> 16);
- sendpacket[37] = (unsigned char) ((network_number & 0x0000FF00) >> 8);
- sendpacket[38] = (unsigned char) (network_number & 0x000000FF);
- return 1;
- } else {
- /* If we get here's 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 'thread' to allow for
- * time-dependent housekeeping work.
- *
- * Notes:
- * 1. This routine may be called on interrupt context with all interrupts
- * enabled. Beware!
- */
-
-static void wpp_poll(sdla_t * card)
-{
- struct net_device *dev = card->wandev.dev;
- ppp_flags_t *adptr_flags = card->flags;
- unsigned long host_cpu_flags;
- ++card->statistics.poll_entry;
- /* The wpp_poll is called continously by the WANPIPE thread to allow
- * for line state housekeeping. However if we are in a connected state
- * then we do not need to go through all the checks everytime. When in
- * connected state execute wpp_poll once every second.
- */
- if (card->wandev.state == WAN_CONNECTED) {
- if ((jiffies - card->state_tick) < HZ)
- 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;
- printk(KERN_INFO "%s: critical inside wpp_poll\n",
- card->devname);
- 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->statistics.poll_processed;
- if (dev && dev->tbusy && !(adptr_flags->imask & 0x02)) {
- ++card->statistics.poll_tbusy_bad_status;
- printk(KERN_INFO "%s: Wpp_Poll: tbusy = 0x01, imask = 0x%02X\n"
- ,card->devname, adptr_flags->imask);
- }
- switch (card->wandev.state) {
- case WAN_CONNECTED:
- card->state_tick = jiffies;
- poll_active(card);
- break;
- case WAN_CONNECTING:
- poll_connecting(card);
- break;
- case WAN_DISCONNECTED:
- poll_disconnected(card);
- break;
- default:
- printk(KERN_INFO "%s: Unknown Poll State 0x%02X\n",
- card->devname, card->wandev.state);
- break;
- }
- 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);
-}
-
-/*============================================================================
- * Monitor active link phase.
- */
-
-static void poll_active(sdla_t * card)
-{
- ppp_flags_t *flags = card->flags;
- /* We check the lcp_state to see if we are in DISCONNECTED state.
- * We are considered to be connected for lcp states 0x06, 0x07, 0x08
- * and 0x09.
- */
- if ((flags->lcp_state <= 0x05) || (flags->disc_cause & 0x03)) {
- wanpipe_set_state(card, WAN_DISCONNECTED);
- show_disc_cause(card, flags->disc_cause);
- }
-}
-
-/*============================================================================
- * Monitor link establishment phase.
- * o if connection timed out, disconnect the link.
- */
-
-static void poll_connecting(sdla_t * card)
-{
- ppp_flags_t *flags = card->flags;
- if (flags->lcp_state == 0x09) {
- wanpipe_set_state(card, WAN_CONNECTED);
- } else if (flags->disc_cause & 0x03) {
- wanpipe_set_state(card, WAN_DISCONNECTED);
- show_disc_cause(card, flags->disc_cause);
- }
-}
-
-/*============================================================================
- * Monitor physical link disconnected phase.
- * o if interface is up and the hold-down timeout has expired, then retry
- * connection.
- */
-
-static void poll_disconnected(sdla_t * card)
-{
- struct net_device *dev = card->wandev.dev;
- if (dev && dev->start &&
- ((jiffies - card->state_tick) > HOLD_DOWN_TIME)) {
- wanpipe_set_state(card, WAN_CONNECTING);
- if (ppp_comm_enable(card) == CMD_OK)
- init_ppp_tx_rx_buff(card);
- }
-}
-
-/****** Miscellaneous Functions *********************************************/
-
-/*============================================================================
- * Configure S502 adapter.
- */
-
-static int config502(sdla_t * card)
-{
- ppp502_conf_t cfg;
- /* Prepare PPP configuration structure */
- memset(&cfg, 0, sizeof(ppp502_conf_t));
- if (card->wandev.clocking)
- cfg.line_speed = bps_to_speed_code(card->wandev.bps);
- cfg.txbuf_num = 4;
- cfg.mtu_local = card->wandev.mtu;
- cfg.mtu_remote = card->wandev.mtu;
- cfg.restart_tmr = 30;
- cfg.auth_rsrt_tmr = 30;
- cfg.auth_wait_tmr = 300;
- cfg.mdm_fail_tmr = 5;
- cfg.dtr_drop_tmr = 1;
- cfg.connect_tmout = 0; /* changed it from 900 */
- cfg.conf_retry = 10;
- cfg.term_retry = 2;
- cfg.fail_retry = 5;
- cfg.auth_retry = 10;
- cfg.ip_options = 0x80;
- cfg.ipx_options = 0xA0;
- cfg.conf_flags |= 0x0E;
-/*
- cfg.ip_local = dev->pa_addr;
- cfg.ip_remote = dev->pa_dstaddr;
- */
- return ppp_configure(card, &cfg);
-}
-
-/*============================================================================
- * Configure S508 adapter.
- */
-
-static int config508(sdla_t * card)
-{
- ppp508_conf_t cfg;
- /* Prepare PPP configuration structure */
- memset(&cfg, 0, sizeof(ppp508_conf_t));
- if (card->wandev.clocking)
- cfg.line_speed = card->wandev.bps;
- if (card->wandev.interface == WANOPT_RS232)
- cfg.conf_flags |= 0x0020;
- cfg.conf_flags |= 0x300; /*send Configure-Request packets forever */
- cfg.txbuf_percent = 60; /* % of Tx bufs */
- cfg.mtu_local = card->wandev.mtu;
- cfg.mtu_remote = card->wandev.mtu;
- cfg.restart_tmr = 30;
- cfg.auth_rsrt_tmr = 30;
- cfg.auth_wait_tmr = 300;
- cfg.mdm_fail_tmr = 100;
- cfg.dtr_drop_tmr = 1;
- cfg.connect_tmout = 0; /* changed it from 900 */
- cfg.conf_retry = 10;
- cfg.term_retry = 2;
- cfg.fail_retry = 5;
- cfg.auth_retry = 10;
- cfg.ip_options = 0x80;
- cfg.ipx_options = 0xA0;
-/*
- cfg.ip_local = dev->pa_addr;
- cfg.ip_remote = dev->pa_dstaddr;
- */
- return ppp_configure(card, &cfg);
-}
-
-/*============================================================================
- * Show disconnection cause.
- */
-
-static void show_disc_cause(sdla_t * card, unsigned cause)
-{
- if (cause & 0x0002)
- printk(KERN_INFO "%s: link terminated by peer\n",
- card->devname);
- else if (cause & 0x0004)
- printk(KERN_INFO "%s: link terminated by user\n",
- card->devname);
- else if (cause & 0x0008)
- printk(KERN_INFO "%s: authentication failed\n", card->devname);
- else if (cause & 0x0010)
- printk(KERN_INFO
- "%s: authentication protocol negotiation failed\n",
- card->devname);
- else if (cause & 0x0020)
- printk(KERN_INFO
- "%s: peer's request for authentication rejected\n",
- card->devname);
- else if (cause & 0x0040)
- printk(KERN_INFO "%s: MRU option rejected by peer\n",
- card->devname);
- else if (cause & 0x0080)
- printk(KERN_INFO "%s: peer's MRU was too small\n",
- card->devname);
- else if (cause & 0x0100)
- printk(KERN_INFO "%s: failed to negotiate peer's LCP options\n",
- card->devname);
- else if (cause & 0x0200)
- printk(KERN_INFO "%s: failed to negotiate peer's IPCP options\n"
- ,card->devname);
- else if (cause & 0x0400)
- printk(KERN_INFO
- "%s: failed to negotiate peer's IPXCP options\n",
- card->devname);
-}
-
-/*============================================================================
- * Convert line speed in bps to a number used by S502 code.
- */
-
-static unsigned char bps_to_speed_code(unsigned long bps)
-{
- unsigned char number;
- if (bps <= 1200)
- number = 0x01;
- else if (bps <= 2400)
- number = 0x02;
- else if (bps <= 4800)
- number = 0x03;
- else if (bps <= 9600)
- number = 0x04;
- else if (bps <= 19200)
- number = 0x05;
- else if (bps <= 38400)
- number = 0x06;
- else if (bps <= 45000)
- number = 0x07;
- else if (bps <= 56000)
- number = 0x08;
- else if (bps <= 64000)
- number = 0x09;
- else if (bps <= 74000)
- number = 0x0A;
- else if (bps <= 112000)
- number = 0x0B;
- else if (bps <= 128000)
- number = 0x0C;
- else
- number = 0x0D;
- return number;
-}
-
-/*============================================================================
- * 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, ppp_private_area_t * ppp_priv_area)
-{
- unsigned char *sendpacket;
- unsigned char buf2[5];
- unsigned char *data;
- unsigned char *buf;
- unsigned int len;
- ppp_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]);
- ++ppp_priv_area->UDP_DRVSTATS_mgmt_kmalloc_err;
- return 1;
- }
- memcpy(data, sendpacket, skb->len);
- switch (data[45]) {
- /* PPIPE_DRIVER_STATISTICS */
- case 0x26:
- *(unsigned long *) &data[60] =
- ppp_priv_area->if_send_entry;
- *(unsigned long *) &data[64] =
- ppp_priv_area->if_send_skb_null;
- *(unsigned long *) &data[68] =
- ppp_priv_area->if_send_broadcast;
- *(unsigned long *) &data[72] =
- ppp_priv_area->if_send_multicast;
- *(unsigned long *) &data[76] =
- ppp_priv_area->if_send_critical_ISR;
- *(unsigned long *) &data[80] =
- ppp_priv_area->if_send_critical_non_ISR;
- *(unsigned long *) &data[84] =
- ppp_priv_area->if_send_busy;
- *(unsigned long *) &data[88] =
- ppp_priv_area->if_send_busy_timeout;
- *(unsigned long *) &data[92] =
- ppp_priv_area->if_send_DRVSTATS_request;
- *(unsigned long *) &data[96] =
- ppp_priv_area->if_send_PTPIPE_request;
- *(unsigned long *) &data[100] =
- ppp_priv_area->if_send_wan_disconnected;
- *(unsigned long *) &data[104] =
- ppp_priv_area->if_send_adptr_bfrs_full;
- *(unsigned long *) &data[108] =
- ppp_priv_area->if_send_protocol_error;
- *(unsigned long *) &data[112] =
- ppp_priv_area->if_send_tx_int_enabled;
- *(unsigned long *) &data[116] =
- ppp_priv_area->if_send_bfr_passed_to_adptr;
- *(unsigned long *) &data[118] =
- card->irq_dis_if_send_count;
- mbox->cmd.length = 62;
- break;
- case 0x27:
- *(unsigned long *) &data[60] = card->statistics.isr_entry;
- *(unsigned long *) &data[64] =
- card->statistics.isr_already_critical;
- *(unsigned long *) &data[68] = card->statistics.isr_rx;
- *(unsigned long *) &data[72] = card->statistics.isr_tx;
- *(unsigned long *) &data[76] =
- card->statistics.isr_intr_test;
- *(unsigned long *) &data[80] =
- card->statistics.isr_spurious;
- *(unsigned long *) &data[84] =
- card->statistics.isr_enable_tx_int;
- *(unsigned long *) &data[88] =
- card->statistics.rx_intr_corrupt_rx_bfr;
- *(unsigned long *) &data[92] =
- ppp_priv_area->rx_intr_no_socket;
- *(unsigned long *) &data[96] =
- ppp_priv_area->rx_intr_DRVSTATS_request;
- *(unsigned long *) &data[100] =
- ppp_priv_area->rx_intr_PTPIPE_request;
- *(unsigned long *) &data[104] =
- ppp_priv_area->rx_intr_bfr_passed_to_stack;
- *(unsigned long *) &data[108] =
- card->statistics.rx_intr_dev_not_started;
- *(unsigned long *) &data[112] =
- card->statistics.tx_intr_dev_not_started;
- mbox->cmd.length = 56;
- break;
- case 0x28:
- *(unsigned long *) &data[60] =
- ppp_priv_area->UDP_PTPIPE_mgmt_kmalloc_err;
- *(unsigned long *) &data[64] =
- ppp_priv_area->UDP_PTPIPE_mgmt_adptr_type_err;
- *(unsigned long *) &data[68] =
- ppp_priv_area->UDP_PTPIPE_mgmt_direction_err;
- *(unsigned long *) &data[72] =
- ppp_priv_area->
- UDP_PTPIPE_mgmt_adptr_cmnd_timeout;
- *(unsigned long *) &data[76] =
- ppp_priv_area->UDP_PTPIPE_mgmt_adptr_cmnd_OK;
- *(unsigned long *) &data[80] =
- ppp_priv_area->UDP_PTPIPE_mgmt_passed_to_adptr;
- *(unsigned long *) &data[84] =
- ppp_priv_area->UDP_PTPIPE_mgmt_passed_to_stack;
- *(unsigned long *) &data[88] =
- ppp_priv_area->UDP_PTPIPE_mgmt_no_socket;
- *(unsigned long *) &data[92] =
- ppp_priv_area->UDP_DRVSTATS_mgmt_kmalloc_err;
- *(unsigned long *) &data[96] =
- ppp_priv_area->
- UDP_DRVSTATS_mgmt_adptr_cmnd_timeout;
- *(unsigned long *) &data[100] =
- ppp_priv_area->UDP_DRVSTATS_mgmt_adptr_cmnd_OK;
- *(unsigned long *) &data[104] =
- ppp_priv_area->
- UDP_DRVSTATS_mgmt_passed_to_adptr;
- *(unsigned long *) &data[108] =
- ppp_priv_area->
- UDP_DRVSTATS_mgmt_passed_to_stack;
- *(unsigned long *) &data[112] =
- ppp_priv_area->UDP_DRVSTATS_mgmt_no_socket;
- *(unsigned long *) &data[116] =
- card->statistics.poll_entry;
- *(unsigned long *) &data[120] =
- card->statistics.poll_already_critical;
- *(unsigned long *) &data[124] =
- card->statistics.poll_processed;
- *(unsigned long *) &data[126] =
- card->irq_dis_poll_count;
- mbox->cmd.length = 70;
- break;
- default:
- /* it's a board command */
- memcpy(&mbox->cmd, &sendpacket[45], sizeof(ppp_cmd_t));
- if (mbox->cmd.length) {
- memcpy(&mbox->data, &sendpacket[60],
- mbox->cmd.length);
- }
- /* run the command on the board */
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK) {
- ppp_error(card, err, mbox);
- ++ppp_priv_area->
- UDP_DRVSTATS_mgmt_adptr_cmnd_timeout;
- break;
- }
- ++ppp_priv_area->UDP_DRVSTATS_mgmt_adptr_cmnd_OK;
- /* copy the result back to our buffer */
- memcpy(data, sendpacket, skb->len);
- memcpy(&data[45], &mbox->cmd, sizeof(ppp_cmd_t));
- if (mbox->cmd.length) {
- memcpy(&data[60], &mbox->data, mbox->cmd.length);
- }
- }
- /* Fill UDP TTL */
- data[8] = card->wandev.ttl;
- len = reply_udp(data, mbox->cmd.length);
- if (udp_pkt_src == UDP_PKT_FRM_NETWORK) {
- ++ppp_priv_area->UDP_DRVSTATS_mgmt_passed_to_adptr;
- ppp_send(card, data, len, skb->protocol);
- } else {
- /* Pass it up the stack
- Allocate socket buffer */
- if ((new_skb = dev_alloc_skb(len)) != NULL) {
- /* copy data into new_skb */
- buf = skb_put(new_skb, len);
- memcpy(buf, data, len);
- ++ppp_priv_area->UDP_DRVSTATS_mgmt_passed_to_stack;
- /* Decapsulate packet and pass it up the protocol
- stack */
- new_skb->protocol = htons(ETH_P_IP);
- new_skb->dev = dev;
- new_skb->mac.raw = new_skb->data;
- netif_rx(new_skb);
- } else {
- ++ppp_priv_area->UDP_DRVSTATS_mgmt_no_socket;
- printk(KERN_INFO "no socket buffers available!\n");
- }
- }
- kfree(data);
- return 0;
-}
-
-/*=============================================================================
- * Process UDP call of type PTPIPEAB.
- */
-
-static int process_udp_mgmt_pkt(char udp_pkt_src, sdla_t * card,
- struct sk_buff *skb, struct net_device *dev,
- ppp_private_area_t * ppp_priv_area)
-{
- unsigned char *sendpacket;
- unsigned char buf2[5];
- unsigned char *data;
- unsigned char *buf;
- unsigned int frames, len;
- struct sk_buff *new_skb;
- unsigned short buffer_length, real_len;
- unsigned long data_ptr;
- int udp_mgmt_req_valid = 1;
- ppp_mbox_t *mbox = card->mbox;
- struct timeval tv;
- 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 management cmnd0x%02X"
- ,card->devname, data[45]);
- ++ppp_priv_area->UDP_PTPIPE_mgmt_kmalloc_err;
- return 1;
- }
- memcpy(data, sendpacket, skb->len);
- switch (data[45]) {
- /* FT1 MONITOR STATUS */
- case 0x80:
- if (card->hw.fwid != SFID_PPP508) {
- ++ppp_priv_area->UDP_PTPIPE_mgmt_adptr_type_err;
- udp_mgmt_req_valid = 0;
- break;
- }
- /* PPIPE_ENABLE_TRACING */
- case 0x20:
- /* PPIPE_DISABLE_TRACING */
- case 0x21:
- /* PPIPE_GET_TRACE_INFO */
- case 0x22:
- /* SET FT1 MODE */
- case 0x81:
- if (udp_pkt_src == UDP_PKT_FRM_NETWORK) {
- ++ppp_priv_area->UDP_PTPIPE_mgmt_direction_err;
- udp_mgmt_req_valid = 0;
- }
- break;
- default:
- break;
- }
- if (!udp_mgmt_req_valid) {
- /* set length to 0 */
- data[46] = data[47] = 0;
- /* set return code */
- data[48] = 0xCD;
- } else {
- switch (data[45]) {
- /* PPIPE_ENABLE_TRACING */
- case 0x20:
- if (!TracingEnabled) {
- /* OPERATE_DATALINE_MONITOR */
- mbox->cmd.command = 0x33;
- mbox->cmd.length = 1;
- mbox->data[0] = 0x03;
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK) {
- ppp_error(card, err, mbox);
- TracingEnabled = 0;
- /* set the return code */
- data[48] = mbox->cmd.result;
- mbox->cmd.length = 0;
- break;
- }
- if (card->hw.fwid == SFID_PPP502) {
- sdla_peek(&card->hw, 0x9000, &buf2, 2);
- } else {
- sdla_peek(&card->hw, 0xC000, &buf2, 2);
- }
- curr_trace_addr = 0;
- memcpy(&curr_trace_addr, &buf2, 2);
- start_trace_addr = curr_trace_addr;
- /* MAX_SEND_BUFFER_SIZE -sizeof(UDP_MGMT_PACKET)
- - 41 */
- available_buffer_space = 1926;
- }
- data[48] = 0;
- mbox->cmd.length = 0;
- TracingEnabled = 1;
- break;
- /* PPIPE_DISABLE_TRACING */
- case 0x21:
- if (TracingEnabled) {
- /* OPERATE_DATALINE_MONITOR */
- mbox->cmd.command = 0x3;
- mbox->cmd.length = 1;
- mbox->data[0] = 0x00;
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
- }
- /*set return code */
- data[48] = 0;
- mbox->cmd.length = 0;
- TracingEnabled = 0;
- break;
- /* PPIPE_GET_TRACE_INFO */
- case 0x22:
- if (TracingEnabled) {
- buffer_length = 0;
- /* frames < NUM_TRACE_FRAMES */
- for (frames = 0; frames < 62; 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[60] |= 0x02;
- break;
- }
- /* get frame status */
- sdla_peek(&card->hw, curr_trace_addr +
- 0x01, &data[60 + buffer_length], 1);
- /* get time stamp */
- sdla_peek(&card->hw, curr_trace_addr +
- 0x06, &data[64 + buffer_length], 2);
- /* get frame length */
- sdla_peek(&card->hw, curr_trace_addr +
- 0x02, &data[62 + buffer_length], 2);
- /* get pointer to real data */
- sdla_peek(&card->hw, curr_trace_addr +
- 0x04, &buf2, 2);
- data_ptr = 0;
- memcpy(&data_ptr, &buf2, 2);
- /* see if we can fit the frame into the
- user buffer */
- memcpy(&real_len,
- &data[62 + buffer_length], 2);
- if ((data_ptr == 0) ||
- ((real_len + 8) >
- available_buffer_space)) {
- data[61 + buffer_length] = 0x00;
- } else {
- /* we can take it next time */
- if ((available_buffer_space -
- buffer_length) <
- (real_len + 8)) {
- data[60] |= 0x02;
- break;
- }
- /* ok, get the frame */
- data[61 + buffer_length] = 0x01;
- /* get the data */
- sdla_peek(&card->hw, data_ptr,
- &data[66 + 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 += 8;
- /* check if we passed the last
- address */
- if (curr_trace_addr >=
- start_trace_addr + 0x1F0) {
- curr_trace_addr =
- start_trace_addr;
- }
- /* update buffer length and make sure its even */
- if (data[61 + 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[60] = (frames << 2) | data[60];
- /* set the data length */
- mbox->cmd.length = buffer_length;
- memcpy(&data[46], &buffer_length, 2);
- /* set return code */
- data[48] = 0;
- } else {
- /* set return code */
- data[48] = 1;
- mbox->cmd.length = 0;
- }
- break;
- /* PPIPE_GET_IBA_DATA */
- case 0x23:
- mbox->cmd.length = 0x09;
- if (card->hw.fwid == SFID_PPP502) {
- sdla_peek(&card->hw, 0xA003, &data[60],
- mbox->cmd.length);
- } else {
- sdla_peek(&card->hw, 0xF003, &data[60],
- mbox->cmd.length);
- }
- /* set the length of the data */
- data[46] = 0x09;
- /* set return code */
- data[48] = 0x00;
- break;
- /* PPIPE_KILL_BOARD */
- case 0x24:
- break;
- /* PPIPE_FT1_READ_STATUS */
- case 0x25:
- sdla_peek(&card->hw, 0xF020, &data[60], 2);
- data[46] = 2;
- data[47] = 0;
- data[48] = 0;
- mbox->cmd.length = 2;
- break;
- case 0x29:
- init_ppp_priv_struct(ppp_priv_area);
- init_global_statistics(card);
- mbox->cmd.length = 0;
- break;
- case 0x30:
- do_gettimeofday(&tv);
- ppp_priv_area->router_up_time = tv.tv_sec -
- ppp_priv_area->router_start_time;
- *(unsigned long *) &data[60] =
- ppp_priv_area->router_up_time;
- mbox->cmd.length = 4;
- break;
- /* FT1 MONITOR STATUS */
- case 0x80:
- /* Enable FT1 MONITOR STATUS */
- if (data[60] == 1) {
- if (rCount++ != 0) {
- data[48] = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
- /* Disable FT1 MONITOR STATUS */
- if (data[60] == 0) {
- if (--rCount != 0) {
- data[48] = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
- default:
- /* it's a board command */
- memcpy(&mbox->cmd, &sendpacket[45], sizeof(ppp_cmd_t));
- if (mbox->cmd.length) {
- memcpy(&mbox->data, &sendpacket[60],
- mbox->cmd.length);
- }
- /* run the command on the board */
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK) {
- ppp_error(card, err, mbox);
- ++ppp_priv_area->
- UDP_PTPIPE_mgmt_adptr_cmnd_timeout;
- break;
- }
- ++ppp_priv_area->UDP_PTPIPE_mgmt_adptr_cmnd_OK;
- /* copy the result back to our buffer */
- memcpy(data, sendpacket, skb->len);
- memcpy(&data[45], &mbox->cmd, sizeof(ppp_cmd_t));
- if (mbox->cmd.length) {
- memcpy(&data[60], &mbox->data, mbox->cmd.length);
- }
- } /* end of switch */
- } /* end of else */
- /* Fill UDP TTL */
- data[8] = card->wandev.ttl;
- len = reply_udp(data, mbox->cmd.length);
- if (udp_pkt_src == UDP_PKT_FRM_NETWORK) {
- ++ppp_priv_area->UDP_PTPIPE_mgmt_passed_to_adptr;
- ppp_send(card, data, len, skb->protocol);
- } else {
- /* Pass it up the stack
- Allocate socket buffer */
- if ((new_skb = dev_alloc_skb(len)) != NULL) {
- /* copy data into new_skb */
- buf = skb_put(new_skb, len);
- memcpy(buf, data, len);
- ++ppp_priv_area->UDP_PTPIPE_mgmt_passed_to_stack;
- /* Decapsulate packet and pass it up the protocol
- stack */
- new_skb->protocol = htons(ETH_P_IP);
- new_skb->dev = dev;
- new_skb->mac.raw = new_skb->data;
- netif_rx(new_skb);
- } else {
- ++ppp_priv_area->UDP_PTPIPE_mgmt_no_socket;
- printk(KERN_INFO "no socket buffers available!\n");
- }
- }
- kfree(data);
- return 0;
-}
-
-/*=============================================================================
- * Initial the ppp_private_area structure.
- */
-
-static void init_ppp_priv_struct(ppp_private_area_t * ppp_priv_area)
-{
- ppp_priv_area->if_send_entry = 0;
- ppp_priv_area->if_send_skb_null = 0;
- ppp_priv_area->if_send_broadcast = 0;
- ppp_priv_area->if_send_multicast = 0;
- ppp_priv_area->if_send_critical_ISR = 0;
- ppp_priv_area->if_send_critical_non_ISR = 0;
- ppp_priv_area->if_send_busy = 0;
- ppp_priv_area->if_send_busy_timeout = 0;
- ppp_priv_area->if_send_DRVSTATS_request = 0;
- ppp_priv_area->if_send_PTPIPE_request = 0;
- ppp_priv_area->if_send_wan_disconnected = 0;
- ppp_priv_area->if_send_adptr_bfrs_full = 0;
- ppp_priv_area->if_send_bfr_passed_to_adptr = 0;
- ppp_priv_area->rx_intr_no_socket = 0;
- ppp_priv_area->rx_intr_DRVSTATS_request = 0;
- ppp_priv_area->rx_intr_PTPIPE_request = 0;
- ppp_priv_area->rx_intr_bfr_not_passed_to_stack = 0;
- ppp_priv_area->rx_intr_bfr_passed_to_stack = 0;
- ppp_priv_area->UDP_PTPIPE_mgmt_kmalloc_err = 0;
- ppp_priv_area->UDP_PTPIPE_mgmt_adptr_type_err = 0;
- ppp_priv_area->UDP_PTPIPE_mgmt_direction_err = 0;
- ppp_priv_area->UDP_PTPIPE_mgmt_adptr_cmnd_timeout = 0;
- ppp_priv_area->UDP_PTPIPE_mgmt_adptr_cmnd_OK = 0;
- ppp_priv_area->UDP_PTPIPE_mgmt_passed_to_adptr = 0;
- ppp_priv_area->UDP_PTPIPE_mgmt_passed_to_stack = 0;
- ppp_priv_area->UDP_PTPIPE_mgmt_no_socket = 0;
- ppp_priv_area->UDP_DRVSTATS_mgmt_kmalloc_err = 0;
- ppp_priv_area->UDP_DRVSTATS_mgmt_adptr_type_err = 0;
- ppp_priv_area->UDP_DRVSTATS_mgmt_direction_err = 0;
- ppp_priv_area->UDP_DRVSTATS_mgmt_adptr_cmnd_timeout = 0;
- ppp_priv_area->UDP_DRVSTATS_mgmt_adptr_cmnd_OK = 0;
- ppp_priv_area->UDP_DRVSTATS_mgmt_passed_to_adptr = 0;
- ppp_priv_area->UDP_DRVSTATS_mgmt_passed_to_stack = 0;
- ppp_priv_area->UDP_DRVSTATS_mgmt_no_socket = 0;
-}
-
-/*============================================================================
- * Initialize Global Statistics
- */
-
-static void init_global_statistics(sdla_t * card)
-{
- card->statistics.isr_entry = 0;
- card->statistics.isr_already_critical = 0;
- card->statistics.isr_tx = 0;
- card->statistics.isr_rx = 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_dev_not_started = 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;
- card->statistics.poll_tbusy_bad_status = 0;
-}
-
-/*============================================================================
- * Initialize Receive and Transmit Buffers.
- */
-
-static void init_ppp_tx_rx_buff(sdla_t * card)
-{
- if (card->hw.fwid == SFID_PPP502) {
- ppp502_buf_info_t *info =
- (void *) (card->hw.dpmbase + PPP502_BUF_OFFS);
- card->u.p.txbuf_base =
- (void *) (card->hw.dpmbase + info->txb_offs);
- card->u.p.txbuf_last = (ppp_buf_ctl_t *) card->u.p.txbuf_base +
- (info->txb_num - 1);
- card->u.p.rxbuf_base =
- (void *) (card->hw.dpmbase + info->rxb_offs);
- card->u.p.rxbuf_last = (ppp_buf_ctl_t *) card->u.p.rxbuf_base +
- (info->rxb_num - 1);
- } else {
- ppp508_buf_info_t *info =
- (void *) (card->hw.dpmbase + PPP508_BUF_OFFS);
- card->u.p.txbuf_base = (void *) (card->hw.dpmbase +
- (info->txb_ptr - PPP508_MB_VECT));
- card->u.p.txbuf_last = (ppp_buf_ctl_t *) card->u.p.txbuf_base +
- (info->txb_num - 1);
- card->u.p.rxbuf_base = (void *) (card->hw.dpmbase +
- (info->rxb_ptr - PPP508_MB_VECT));
- card->u.p.rxbuf_last = (ppp_buf_ctl_t *) card->u.p.rxbuf_base +
- (info->rxb_num - 1);
- card->u.p.rx_base = info->rxb_base;
- card->u.p.rx_top = info->rxb_end;
- }
- card->u.p.txbuf = card->u.p.txbuf_base;
- card->rxmb = card->u.p.rxbuf_base;
-}
-
-/*=============================================================================
- * Perform the Interrupt Test by running the READ_CODE_VERSION command MAX_INTR
- * _TEST_COUNTER times.
- */
-
-static int intr_test(sdla_t * card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err, i;
- /* The critical flag is unset because during initialization (if_open)
- * we want the interrupts to be enabled so that when the wpp_isr is
- * called it does not exit due to critical flag set.
- */
- card->wandev.critical = 0;
- err = ppp_set_intr_mode(card, 0x08);
- if (err == CMD_OK) {
- for (i = 0; i < MAX_INTR_TEST_COUNTER; i++) {
- /* Run command READ_CODE_VERSION */
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.length = 0;
- mb->cmd.command = 0x10;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- }
- } else
- return err;
- err = ppp_set_intr_mode(card, 0);
- if (err != CMD_OK)
- return err;
- card->wandev.critical = 1;
- return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. DRVSTATS or PTPIPEAB ?
- */
-
-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[0] == 0x45 && /* IP packet */
- sendpacket[9] == 0x11 && /* UDP packet */
- sendpacket[22] == buf2[1] && /* UDP Port */
- sendpacket[23] == buf2[0] &&
- sendpacket[36] == 0x01) {
- if (sendpacket[28] == 0x50 && /* PTPIPEAB: Signature */
- sendpacket[29] == 0x54 &&
- sendpacket[30] == 0x50 &&
- sendpacket[31] == 0x49 &&
- sendpacket[32] == 0x50 &&
- sendpacket[33] == 0x45 &&
- sendpacket[34] == 0x41 &&
- sendpacket[35] == 0x42) {
- return UDP_PTPIPE_TYPE;
- } else if (sendpacket[28] == 0x44 && /* DRVSTATS: Signature */
- sendpacket[29] == 0x52 &&
- sendpacket[30] == 0x56 &&
- sendpacket[31] == 0x53 &&
- sendpacket[32] == 0x54 &&
- sendpacket[33] == 0x41 &&
- sendpacket[34] == 0x54 &&
- sendpacket[35] == 0x53) {
- return UDP_DRVSTATS_TYPE;
- } else
- return UDP_INVALID_TYPE;
- } else
- return UDP_INVALID_TYPE;
-}
-
-/****** End *****************************************************************/
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)