patch-2.1.79 linux/drivers/net/sdla_ppp.c
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- Lines: 2203
- Date:
Mon Jan 12 14:46:16 1998
- Orig file:
v2.1.78/linux/drivers/net/sdla_ppp.c
- Orig date:
Sat Nov 29 11:25:10 1997
diff -u --recursive --new-file v2.1.78/linux/drivers/net/sdla_ppp.c linux/drivers/net/sdla_ppp.c
@@ -1,7 +1,7 @@
/*****************************************************************************
* sdla_ppp.c WANPIPE(tm) Multiprotocol WAN Link Driver. PPP module.
*
-* Author: Gene Kozin <genek@compuserve.com>
+* Author: Jaspreet Singh <jaspreet@sangoma.com>
*
* Copyright: (c) 1995-1997 Sangoma Technologies Inc.
*
@@ -10,8 +10,31 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
* ============================================================================
-* Jun 29, 1997 Alan Cox o Dumped the idiot UDP management system.
-*
+* 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
@@ -59,65 +82,146 @@
#define STATIC static
#endif
-#define CMD_OK 0 /* normal firmware return code */
-#define CMD_TIMEOUT 0xFF /* firmware command timed out */
-
-#define PPP_DFLT_MTU 1500 /* default MTU */
-#define PPP_MAX_MTU 4000 /* maximum MTU */
+#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 */
+#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 device *dev,
- wanif_conf_t * conf);
-static int del_if(wan_device_t * wandev, struct device *dev);
+static int update (wan_device_t* wandev);
+static int new_if (wan_device_t* wandev, struct device* dev,
+ wanif_conf_t* conf);
+static int del_if (wan_device_t* wandev, struct device* dev);
/* WANPIPE-specific entry points */
-static int wpp_exec(struct sdla *card, void *u_cmd, void *u_data);
+static int wpp_exec (struct sdla* card, void* u_cmd, void* u_data);
/* Network device interface */
-static int if_init(struct device *dev);
-static int if_open(struct device *dev);
-static int if_close(struct device *dev);
-static int if_header(struct sk_buff *skb, struct 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 device *dev);
-static struct enet_statistics *if_stats(struct device *dev);
+static int if_init (struct device* dev);
+static int if_open (struct device* dev);
+static int if_close (struct device* dev);
+static int if_header (struct sk_buff* skb, struct 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 device* dev);
+static struct enet_statistics* if_stats (struct 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);
+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);
+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);
+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 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 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 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 ****************************************************/
/*============================================================================
@@ -132,32 +236,38 @@
* Return: 0 o.k.
* < 0 failure.
*/
-__initfunc(int wpp_init(sdla_t * card, wandev_conf_t * conf))
+int wpp_init (sdla_t* card, wandev_conf_t* conf)
{
- union {
+ 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);
+ 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;
+ 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
@@ -166,28 +276,39 @@
* 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);
-
+ 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;
- TracingEnabled = '0';
+ 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;
}
@@ -229,33 +350,59 @@
* Return: 0 o.k.
* < 0 failure (channel will not be created)
*/
-static int new_if(wan_device_t * wandev, struct device *dev, wanif_conf_t * conf)
+static int new_if (wan_device_t* wandev, struct device* dev, wanif_conf_t* conf)
{
- sdla_t *card = wandev->private;
+ sdla_t* card = wandev->private;
+ ppp_private_area_t* ppp_priv_area;
if (wandev->ndev)
- return -EEXIST
- ;
+ return -EEXIST;
+
if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
+
printk(KERN_INFO "%s: invalid interface name!\n",
- card->devname);
+ 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 = card;
+ dev->priv = ppp_priv_area;
return 0;
}
/*============================================================================
* Delete logical channel.
*/
-static int del_if(wan_device_t * wandev, struct device *dev)
+static int del_if (wan_device_t* wandev, struct device* dev)
{
+ if (dev->priv) {
+
+ kfree(dev->priv);
+ dev->priv = NULL;
+ }
+
return 0;
}
@@ -298,39 +445,42 @@
* interface registration. Returning anything but zero will fail interface
* registration.
*/
-static int if_init(struct device *dev)
+static int if_init (struct device* dev)
{
- sdla_t *card = dev->priv;
- wan_device_t *wandev = &card->wandev;
+ ppp_private_area_t* ppp_priv_area = dev->priv;
+ sdla_t* card = ppp_priv_area->card;
+ wan_device_t* wandev = &card->wandev;
int i;
/* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_header = &if_header;
- dev->rebuild_header = &if_rebuild_hdr;
- dev->hard_start_xmit = &if_send;
- dev->get_stats = &if_stats;
+ dev->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->family = AF_INET; /* address family */
- dev->type = ARPHRD_PPP; /* ARP h/w type */
- dev->mtu = wandev->mtu;
- dev->hard_header_len = PPP_HDR_LEN; /* media header length */
+ dev->family = AF_INET; /* address family */
+ 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 = wandev->maddr;
- dev->mem_end = wandev->maddr + wandev->msize - 1;
-
- /* Set transmit buffer queue length */
- dev->tx_queue_len = 30;
-
+ dev->irq = wandev->irq;
+ dev->dma = wandev->dma;
+ dev->base_addr = wandev->ioport;
+ dev->mem_start = wandev->maddr;
+ dev->mem_end = wandev->maddr + wandev->msize - 1;
+
+ /* Set transmit buffer queue length */
+ dev->tx_queue_len = 100;
+
/* Initialize socket buffers */
for (i = 0; i < DEV_NUMBUFFS; ++i)
skb_queue_head_init(&dev->buffs[i]);
+
return 0;
}
@@ -341,64 +491,73 @@
*
* Return 0 if O.k. or errno.
*/
-static int if_open(struct device *dev)
+static int if_open (struct device* dev)
{
- sdla_t *card = dev->priv;
+ 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 -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)) {
+
+ 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;
- goto split;
+ 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 */
- 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);
+ init_ppp_tx_rx_buff( card );
+
+ if (ppp_set_intr_mode(card, 0x03)) {
+
+ err = -EIO;
+ card->wandev.critical = 0;
+ return err;
- 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;
- if (ppp_set_intr_mode(card, 0x03) || ppp_comm_enable(card)) {
+ flags->imask &= ~0x02;
+
+ if (ppp_comm_enable(card)) {
+
err = -EIO;
- goto split;
+ 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;
-
- split:
+ do_gettimeofday( &tv );
+ ppp_priv_area->router_start_time = tv.tv_sec;
card->wandev.critical = 0;
return err;
}
@@ -408,13 +567,14 @@
* o if this is the last open, then disable communications and interrupts.
* o reset flags.
*/
-static int if_close(struct device *dev)
+static int if_close (struct device* dev)
{
- sdla_t *card = dev->priv;
+ 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))
+ if (test_and_set_bit(0, (void*)&card->wandev.critical))
return -EAGAIN;
- ;
+
dev->start = 0;
wanpipe_close(card);
wanpipe_set_state(card, WAN_DISCONNECTED);
@@ -433,18 +593,21 @@
*
* Return: media header length.
*/
-static int if_header(struct sk_buff *skb, struct device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len)
+static int if_header (struct sk_buff* skb, struct 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;
+ switch (type)
+ {
+ case ETH_P_IP:
+
+ case ETH_P_IPX:
+ skb->protocol = type;
+ break;
- default:
- skb->protocol = 0;
+ default:
+ skb->protocol = 0;
}
+
return PPP_HDR_LEN;
}
@@ -454,12 +617,13 @@
* Return: 1 physical address resolved.
* 0 physical address not resolved
*/
-static int if_rebuild_hdr(struct sk_buff *skb)
+static int if_rebuild_hdr (struct sk_buff* skb)
{
- sdla_t *card = skb->dev->priv;
+ ppp_private_area_t* ppp_priv_area = skb->dev->priv;
+ sdla_t* card = ppp_priv_area->card;
printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n",
- card->devname, skb->dev->name);
+ card->devname, dev->name);
return 1;
}
@@ -480,55 +644,238 @@
* 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 device *dev)
+static int if_send (struct sk_buff* skb, struct device* dev)
{
- sdla_t *card = dev->priv;
+ 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;
+
+ dev_tint(dev);
+ return 0;
- if (test_and_set_bit(0, (void *) &card->wandev.critical)) {
-#ifdef _DEBUG_
- printk(KERN_INFO "%s: if_send() hit critical section!\n",
- card->devname);
-#endif
- return 1;
}
- if (test_and_set_bit(0, (void *) &dev->tbusy)) {
-#ifdef _DEBUG_
- printk(KERN_INFO "%s: Tx collision on interface %s!\n",
- card->devname, dev->name);
+
+ 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;
+#ifdef CONFIG_SANGOMA_MANAGER
+ if(sangoma_ppp_manager(skb,card))
+ {
+ dev_kfree_skb(skb, FREE_WRITE);
+ return 0;
+ }
#endif
- ++card->wandev.stats.collisions;
- retry = 1;
- } else if (card->wandev.state != WAN_CONNECTED)
- ++card->wandev.stats.tx_dropped
- ;
- else if (!skb->protocol)
- ++card->wandev.stats.tx_errors
- ;
- else if (ppp_send(card, skb->data, skb->len, skb->protocol)) {
- ppp_flags_t *flags = card->flags;
+ disable_irq(card->hw.irq);
+ ++card->irq_dis_if_send_count;
- flags->imask |= 0x02; /* unmask Tx interrupts */
- retry = 1;
- } else
- ++card->wandev.stats.tx_packets;
+ 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, FREE_WRITE);
+ ++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 (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 (!retry) {
+ 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;
+ }
+ }
+
+tx_done:
+ if (!retry){
dev_kfree_skb(skb, FREE_WRITE);
- dev->tbusy = 0;
}
+
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;
}
+/*
+ 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 device *dev)
+static struct net_device_stats* if_stats (struct device* dev)
{
- sdla_t *card = dev->priv;
+ ppp_private_area_t* ppp_priv_area = dev->priv;
+ sdla_t* card = ppp_priv_area->card;
return &card->wandev.stats;
}
@@ -539,125 +886,146 @@
* Read firmware code version.
* Put code version as ASCII string in str.
*/
-static int ppp_read_version(sdla_t * card, char *str)
+static int ppp_read_version (sdla_t* card, char* str)
{
- ppp_mbox_t *mb = card->mbox;
+ 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)
+static int ppp_configure (sdla_t* card, void* data)
{
- ppp_mbox_t *mb = card->mbox;
+ ppp_mbox_t* mb = card->mbox;
int data_len = (card->hw.fwid == SFID_PPP502) ?
- sizeof(ppp502_conf_t) : sizeof(ppp508_conf_t);
+ 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.length = data_len;
mb->cmd.command = PPP_SET_CONFIG;
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
+
+ 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)
+static int ppp_set_intr_mode (sdla_t* card, unsigned mode)
{
- ppp_mbox_t *mb = card->mbox;
+ 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;
+
+ 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)
+
+ if (err != CMD_OK)
ppp_error(card, err, mb);
+
return err;
}
/*============================================================================
* Enable communications.
*/
-static int ppp_comm_enable(sdla_t * card)
+static int ppp_comm_enable (sdla_t* card)
{
- ppp_mbox_t *mb = card->mbox;
+ 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)
+
+ if (err != CMD_OK)
ppp_error(card, err, mb);
+
return err;
}
/*============================================================================
* Disable communications.
*/
-static int ppp_comm_disable(sdla_t * card)
+static int ppp_comm_disable (sdla_t* card)
{
- ppp_mbox_t *mb = card->mbox;
+ 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)
+
+ if (err != CMD_OK)
ppp_error(card, err, mb);
+
return err;
}
/*============================================================================
* Get communications error statistics.
*/
-static int ppp_get_err_stats(sdla_t * card)
+static int ppp_get_err_stats (sdla_t* card)
{
- ppp_mbox_t *mb = card->mbox;
+ 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;
+
+ 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
+
+ } else
ppp_error(card, err, mb);
+
return err;
}
@@ -666,34 +1034,36 @@
* Return: 0 - o.k.
* 1 - no transmit buffers available
*/
-static int ppp_send(sdla_t * card, void *data, unsigned len, unsigned proto)
+
+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, cpu_flags;
+ ppp_buf_ctl_t* txbuf = card->u.p.txbuf;
+ unsigned long addr;
if (txbuf->flag)
- return 1
- ;
+ return 1;
+
if (card->hw.fwid == SFID_PPP502)
- addr = (txbuf->buf.o_p[1] << 8) + txbuf->buf.o_p[0];
- else
+ addr = (txbuf->buf.o_p[1] << 8) + txbuf->buf.o_p[0];
+ else
addr = txbuf->buf.ptr;
- save_flags(cpu_flags);
- cli();
+
sdla_poke(&card->hw, addr, data, len);
- restore_flags(cpu_flags);
- txbuf->length = len; /* frame length */
+
+ txbuf->length = len; /* frame length */
+
if (proto == ETH_P_IPX)
- txbuf->proto = 0x01 /* protocol ID */
- ;
- txbuf->flag = 1; /* start transmission */
+ 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
- ;
+
+ if ((void*)txbuf > card->u.p.txbuf_last)
+ card->u.p.txbuf = card->u.p.txbuf_base;
+
return 0;
}
@@ -706,20 +1076,23 @@
*
* Return zero if previous command has to be cancelled.
*/
-static int ppp_error(sdla_t * card, int err, ppp_mbox_t * mb)
+
+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);
+ 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;
}
@@ -728,112 +1101,361 @@
/*============================================================================
* PPP interrupt service routine.
*/
-STATIC void wpp_isr(sdla_t * card)
+STATIC void wpp_isr (sdla_t* card)
{
- ppp_flags_t *flags = card->flags;
+ ppp_flags_t* flags = card->flags;
+ char *ptr = &flags->iflag;
+ unsigned long host_cpu_flags;
+ struct device* dev = card->wandev.dev;
+ int i;
+
+ card->in_isr = 1;
+
+ ++card->statistics.isr_entry;
+
+ if (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 */
- rx_intr(card);
- break;
-
- case 0x02: /* transmit interrupt */
- flags->imask &= ~0x02;
- tx_intr(card);
- break;
-
- default: /* unexpected interrupt */
- printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n",
- card->devname, 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)
+static void rx_intr (sdla_t* card)
{
- ppp_buf_ctl_t *rxbuf = card->rxmb;
- struct device *dev = card->wandev.dev;
- struct sk_buff *skb;
+ ppp_buf_ctl_t* rxbuf = card->rxmb;
+ struct device* dev = card->wandev.dev;
+ ppp_private_area_t* ppp_priv_area;
+ struct sk_buff* skb;
unsigned len;
- void *buf;
+ 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!\n",
- card->devname, (unsigned) rxbuf);
- return;
- }
- if (!dev || !dev->start)
- goto rx_done
- ;
- len = rxbuf->length;
+
- /* Allocate socket buffer */
- skb = dev_alloc_skb(len);
- if (skb == NULL) {
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- ++card->wandev.stats.rx_dropped;
- goto rx_done;
- }
- /* 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];
+ 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;
- 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;
+ 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;
+ }
+#ifdef CONFIG_SANGOMA_MANAGER
+ 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, FREE_READ);
+
+ } 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, FREE_READ);
+ } else
+#endif
+ 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, FREE_READ);
+
+ } 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;
+ ++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;
- 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;
- }
-
- /* Pass it up the protocol stack */
- skb->dev = dev;
- netif_rx(skb);
- ++card->wandev.stats.rx_packets;
- rx_done:
+ } 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
- ;
+
+ 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)
+static void tx_intr (sdla_t* card)
{
- struct device *dev = card->wandev.dev;
+ struct device* dev = card->wandev.dev;
+
+ if (!dev || !dev->start)
+ {
+ ++card->statistics.tx_intr_dev_not_started;
+ return;
+ }
- if (!dev || !dev->start)
- return;
dev->tbusy = 0;
- mark_bh(NET_BH);
+ dev_tint(dev);
+}
+
+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 ****************************************/
@@ -847,33 +1469,100 @@
* 1. This routine may be called on interrupt context with all interrupts
* enabled. Beware!
*/
-static void wpp_poll(sdla_t * card)
+static void wpp_poll (sdla_t* card)
{
- switch (card->wandev.state) {
- case WAN_CONNECTED:
- poll_active(card);
- break;
-
- case WAN_CONNECTING:
- poll_connecting(card);
- break;
-
- case WAN_DISCONNECTED:
- poll_disconnected(card);
- break;
+ struct 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 (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)
+static void poll_active (sdla_t* card)
{
- ppp_flags_t *flags = card->flags;
+ 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)) {
- if (flags->disc_cause & 0x03) {
wanpipe_set_state(card, WAN_DISCONNECTED);
show_disc_cause(card, flags->disc_cause);
+
}
}
@@ -881,13 +1570,16 @@
* Monitor link establishment phase.
* o if connection timed out, disconnect the link.
*/
-static void poll_connecting(sdla_t * card)
+static void poll_connecting (sdla_t* card)
{
- ppp_flags_t *flags = card->flags;
-
- if (flags->lcp_state == 0x09) {
+ ppp_flags_t* flags = card->flags;
+
+ if (flags->lcp_state == 0x09)
+ {
wanpipe_set_state(card, WAN_CONNECTED);
- } else if (flags->disc_cause & 0x03) {
+ }
+ else if (flags->disc_cause & 0x03)
+ {
wanpipe_set_state(card, WAN_DISCONNECTED);
show_disc_cause(card, flags->disc_cause);
}
@@ -898,14 +1590,16 @@
* o if interface is up and the hold-down timeout has expired, then retry
* connection.
*/
-static void poll_disconnected(sdla_t * card)
+static void poll_disconnected (sdla_t* card)
{
- struct device *dev = card->wandev.dev;
+ struct device* dev = card->wandev.dev;
if (dev && dev->start &&
- ((jiffies - card->state_tick) > HOLD_DOWN_TIME)) {
- wanpipe_set_state(card, WAN_CONNECTING);
- ppp_comm_enable(card);
+ ((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 );
}
}
@@ -914,7 +1608,7 @@
/*============================================================================
* Configure S502 adapter.
*/
-static int config502(sdla_t * card)
+static int config502 (sdla_t* card)
{
ppp502_conf_t cfg;
@@ -923,33 +1617,34 @@
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.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;
- */
+ 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)
+static int config508 (sdla_t* card)
{
ppp508_conf_t cfg;
@@ -957,111 +1652,275 @@
memset(&cfg, 0, sizeof(ppp508_conf_t));
if (card->wandev.clocking)
- cfg.line_speed = card->wandev.bps
- ;
+ 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 = 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 |= 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;
- */
+ 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)
+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);
+ 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: 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);
+ "%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)
+static unsigned char bps_to_speed_code (unsigned long bps)
{
- unsigned char number;
+ unsigned char number;
- if (bps <= 1200)
+ if (bps <= 1200)
number = 0x01;
- else if (bps <= 2400)
+ else if (bps <= 2400)
number = 0x02;
- else if (bps <= 4800)
+ else if (bps <= 4800)
number = 0x03;
- else if (bps <= 9600)
+ else if (bps <= 9600)
number = 0x04;
- else if (bps <= 19200)
+ else if (bps <= 19200)
number = 0x05;
- else if (bps <= 38400)
+ else if (bps <= 38400)
number = 0x06;
- else if (bps <= 45000)
+ else if (bps <= 45000)
number = 0x07;
- else if (bps <= 56000)
+ else if (bps <= 56000)
number = 0x08;
- else if (bps <= 64000)
+ else if (bps <= 64000)
number = 0x09;
- else if (bps <= 74000)
+ else if (bps <= 74000)
number = 0x0A;
- else if (bps <= 112000)
+ else if (bps <= 112000)
number = 0x0B;
- else if (bps <= 128000)
+ else if (bps <= 128000)
number = 0x0C;
- else
+ else
number = 0x0D;
return number;
+}
+
+/*=============================================================================
+ * 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 intialization (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;
}
/****** End *****************************************************************/
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov