1 /*****************************************************************************
2 * sdla_fr.c WANPIPE(tm) Multiprotocol WAN Link Driver. Frame relay module.
4 * Author(s): Nenad Corbic <ncorbic@sangoma.com>
7 * Copyright: (c) 1995-2001 Sangoma Technologies Inc.
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 * ============================================================================
14 * Nov 23, 2000 Nenad Corbic o Added support for 2.4.X kernels
15 * Nov 15, 2000 David Rokavarg
16 * Nenad Corbic o Added frame relay bridging support.
17 * Original code from Mark Wells and Kristian Hoffmann has
18 * been integrated into the frame relay driver.
19 * Nov 13, 2000 Nenad Corbic o Added true interface type encoding option.
20 * Tcpdump doesn't support Frame Relay inteface
21 * types, to fix this true type option will set
22 * the interface type to RAW IP mode.
23 * Nov 07, 2000 Nenad Corbic o Added security features for UDP debugging:
24 * Deny all and specify allowed requests.
25 * Nov 06, 2000 Nenad Corbic o Wanpipe interfaces conform to raw packet interfaces.
26 * Moved the if_header into the if_send() routine.
27 * The if_header() was breaking the libpcap
28 * support. i.e. support for tcpdump, ethereal ...
29 * Oct 12. 2000 Nenad Corbic o Added error message in fr_configure
30 * Jul 31, 2000 Nenad Corbic o Fixed the Router UP Time.
31 * Apr 28, 2000 Nenad Corbic o Added the option to shutdown an interface
32 * when the channel gets disconnected.
33 * Apr 28, 2000 Nenad Corbic o Added M.Grants patch: disallow duplicate
35 * Apr 25, 2000 Nenad Corbic o Added M.Grants patch: dynamically add/remove
36 * new dlcis/interfaces.
37 * Mar 23, 2000 Nenad Corbic o Improved task queue, bh handling.
38 * Mar 16, 2000 Nenad Corbic o Added Inverse ARP support
39 * Mar 13, 2000 Nenad Corbic o Added new socket API support.
40 * Mar 06, 2000 Nenad Corbic o Bug Fix: corrupted mbox recovery.
41 * Feb 24, 2000 Nenad Corbic o Fixed up FT1 UDP debugging problem.
42 * Dev 15, 1999 Nenad Corbic o Fixed up header files for 2.0.X kernels
44 * Nov 08, 1999 Nenad Corbic o Combined all debug UDP calls into one function
45 * o Removed the ARP support. This has to be done
46 * in the next version.
47 * o Only a Node can implement NO signalling.
48 * Initialize DLCI during if_open() if NO
50 * o Took out IPX support, implement in next
52 * Sep 29, 1999 Nenad Corbic o Added SMP support and changed the update
53 * function to use timer interrupt.
54 * o Fixed the CIR bug: Set the value of BC
55 * to CIR when the CIR is enabled.
56 * o Updated comments, statistics and tracing.
57 * Jun 02, 1999 Gideon Hack o Updated for S514 support.
58 * Sep 18, 1998 Jaspreet Singh o Updated for 2.2.X kernels.
59 * Jul 31, 1998 Jaspreet Singh o Removed wpf_poll routine. The channel/DLCI
60 * status is received through an event interrupt.
61 * Jul 08, 1998 David Fong o Added inverse ARP support.
62 * Mar 26, 1997 Jaspreet Singh o Returning return codes for failed UDP cmds.
63 * Jan 28, 1997 Jaspreet Singh o Improved handling of inactive DLCIs.
64 * Dec 30, 1997 Jaspreet Singh o Replaced dev_tint() with mark_bh(NET_BH)
65 * Dec 16, 1997 Jaspreet Singh o Implemented Multiple IPX support.
66 * Nov 26, 1997 Jaspreet Singh o Improved load sharing with multiple boards
67 * o Added Cli() to protect enabling of interrupts
68 * while polling is called.
69 * Nov 24, 1997 Jaspreet Singh o Added counters to avoid enabling of interrupts
70 * when they have been disabled by another
71 * interface or routine (eg. wpf_poll).
72 * Nov 06, 1997 Jaspreet Singh o Added INTR_TEST_MODE to avoid polling
73 * routine disable interrupts during interrupt
75 * Oct 20, 1997 Jaspreet Singh o Added hooks in for Router UP time.
76 * Oct 16, 1997 Jaspreet Singh o The critical flag is used to maintain flow
77 * control by avoiding RACE conditions. The
78 * cli() and restore_flags() are taken out.
79 * The fr_channel structure is appended for
81 * Oct 15, 1997 Farhan Thawar o updated if_send() and receive for IPX
82 * Aug 29, 1997 Farhan Thawar o Removed most of the cli() and sti()
83 * o Abstracted the UDP management stuff
84 * o Now use tbusy and critical more intelligently
85 * Jul 21, 1997 Jaspreet Singh o Can configure T391, T392, N391, N392 & N393
86 * through router.conf.
87 * o Protected calls to sdla_peek() by adDing
88 * save_flags(), cli() and restore_flags().
89 * o Added error message for Inactive DLCIs in
90 * fr_event() and update_chan_state().
91 * o Fixed freeing up of buffers using kfree()
92 * when packets are received.
93 * Jul 07, 1997 Jaspreet Singh o Added configurable TTL for UDP packets
94 * o Added ability to discard multicast and
95 * broadcast source addressed packets
96 * Jun 27, 1997 Jaspreet Singh o Added FT1 monitor capabilities
97 * New case (0x44) statement in if_send routine
98 * Added a global variable rCount to keep track
99 * of FT1 status enabled on the board.
100 * May 29, 1997 Jaspreet Singh o Fixed major Flow Control Problem
101 * With multiple boards a problem was seen where
102 * the second board always stopped transmitting
103 * packet after running for a while. The code
104 * got into a stage where the interrupts were
105 * disabled and dev->tbusy was set to 1.
106 * This caused the If_send() routine to get into
107 * the if clause for it(0,dev->tbusy)
109 * The code got into this stage due to an
110 * interrupt occurring within the if clause for
111 * set_bit(0,dev->tbusy). Since an interrupt
112 * disables furhter transmit interrupt and
113 * makes dev->tbusy = 0, this effect was undone
114 * by making dev->tbusy = 1 in the if clause.
115 * The Fix checks to see if Transmit interrupts
116 * are disabled then do not make dev->tbusy = 1
117 * Introduced a global variable: int_occur and
118 * added tx_int_enabled in the wan_device
120 * May 21, 1997 Jaspreet Singh o Fixed UDP Management for multiple
123 * Apr 25, 1997 Farhan Thawar o added UDP Management stuff
124 * o fixed bug in if_send() and tx_intr() to
125 * sleep and wakeup all devices
126 * Mar 11, 1997 Farhan Thawar Version 3.1.1
127 * o fixed (+1) bug in fr508_rx_intr()
128 * o changed if_send() to return 0 if
129 * wandev.critical() is true
130 * o free socket buffer in if_send() if
132 * o added tx_intr() routine
133 * Jan 30, 1997 Gene Kozin Version 3.1.0
134 * o implemented exec() entry point
135 * o fixed a bug causing driver configured as
136 * a FR switch to be stuck in WAN_
138 * Jan 02, 1997 Gene Kozin Initial version.
139 *****************************************************************************/
141 #include <linux/module.h>
142 #include <linux/kernel.h> /* printk(), and other useful stuff */
143 #include <linux/stddef.h> /* offsetof(), etc. */
144 #include <linux/errno.h> /* return codes */
145 #include <linux/string.h> /* inline memset(), etc. */
146 #include <linux/slab.h> /* kmalloc(), kfree() */
147 #include <linux/wanrouter.h> /* WAN router definitions */
148 #include <linux/wanpipe.h> /* WANPIPE common user API definitions */
149 #include <linux/workqueue.h>
150 #include <linux/if_arp.h> /* ARPHRD_* defines */
151 #include <asm/byteorder.h> /* htons(), etc. */
152 #include <asm/io.h> /* for inb(), outb(), etc. */
153 #include <linux/time.h> /* for do_gettimeofday */
154 #include <linux/in.h> /* sockaddr_in */
155 #include <linux/jiffies.h> /* time_after() macro */
156 #include <asm/errno.h>
158 #include <linux/ip.h>
159 #include <linux/if.h>
161 #include <linux/if_wanpipe_common.h> /* Wanpipe Socket */
162 #include <linux/if_wanpipe.h>
164 #include <linux/sdla_fr.h> /* frame relay firmware API definitions */
166 #include <asm/uaccess.h>
167 #include <linux/inetdevice.h>
168 #include <linux/netdevice.h>
170 #include <net/route.h> /* Dynamic Route Creation */
171 #include <linux/etherdevice.h> /* eth_type_trans() used for bridging */
172 #include <linux/random.h>
174 /****** Defines & Macros ****************************************************/
176 #define MAX_CMD_RETRY 10 /* max number of firmware retries */
178 #define FR_HEADER_LEN 8 /* max encapsulation header size */
179 #define FR_CHANNEL_MTU 1500 /* unfragmented logical channel MTU */
181 /* Q.922 frame types */
182 #define Q922_UI 0x03 /* Unnumbered Info frame */
183 #define Q922_XID 0xAF
185 /* DLCI configured or not */
186 #define DLCI_NOT_CONFIGURED 0x00
187 #define DLCI_CONFIG_PENDING 0x01
188 #define DLCI_CONFIGURED 0x02
190 /* CIR enabled or not */
191 #define CIR_ENABLED 0x00
192 #define CIR_DISABLED 0x01
194 #define FRAME_RELAY_API 1
195 #define MAX_BH_BUFF 10
197 /* For handle_IPXWAN() */
198 #define CVHexToAscii(b) (((unsigned char)(b) > (unsigned char)9) ? ((unsigned char)'A' + ((unsigned char)(b) - (unsigned char)10)) : ((unsigned char)'0' + (unsigned char)(b)))
200 /****** Data Structures *****************************************************/
202 /* This is an extention of the 'struct device' we create for each network
203 * interface to keep the rest of channel-specific data.
205 typedef struct fr_channel
207 wanpipe_common_t common;
208 char name[WAN_IFNAME_SZ+1]; /* interface name, ASCIIZ */
209 unsigned dlci_configured ; /* check whether configured or not */
210 unsigned cir_status; /* check whether CIR enabled or not */
211 unsigned dlci; /* logical channel number */
212 unsigned cir; /* committed information rate */
213 unsigned bc; /* committed burst size */
214 unsigned be; /* excess burst size */
215 unsigned mc; /* multicast support on or off */
216 unsigned tx_int_status; /* Transmit Interrupt Status */
217 unsigned short pkt_length; /* Packet Length */
218 unsigned long router_start_time;/* Router start time in seconds */
219 unsigned long tick_counter; /* counter for transmit time out */
220 char dev_pending_devtint; /* interface pending dev_tint() */
221 void *dlci_int_interface; /* pointer to the DLCI Interface */
222 unsigned long IB_addr; /* physical address of Interface Byte */
223 unsigned long state_tick; /* time of the last state change */
224 unsigned char enable_IPX; /* Enable/Disable the use of IPX */
225 unsigned long network_number; /* Internal Network Number for IPX*/
226 sdla_t *card; /* -> owner */
227 unsigned route_flag; /* Add/Rem dest addr in route tables */
228 unsigned inarp; /* Inverse Arp Request status */
229 long inarp_ready; /* Ready to send requests */
230 int inarp_interval; /* Time between InArp Requests */
231 unsigned long inarp_tick; /* InArp jiffies tick counter */
232 long interface_down; /* Bring interface down on disconnect */
233 struct net_device_stats ifstats; /* interface statistics */
234 if_send_stat_t drvstats_if_send;
235 rx_intr_stat_t drvstats_rx_intr;
236 pipe_mgmt_stat_t drvstats_gen;
237 unsigned long router_up_time;
239 unsigned short transmit_length;
240 struct sk_buff *delay_skb;
242 bh_data_t *bh_head; /* Circular buffer for chdlc_bh */
243 unsigned long tq_working;
244 volatile int bh_write;
245 volatile int bh_read;
246 atomic_t bh_buff_used;
248 /* Polling task queue. Each interface
249 * has its own task queue, which is used
250 * to defer events from the interrupt */
251 struct work_struct fr_poll_work;
252 struct timer_list fr_arp_timer;
259 /* Whether this interface should be setup as a gateway.
260 * Used by dynamic route setup code */
263 /* True interface type */
265 u8 fr_header[FR_HEADER_LEN];
270 /* Route Flag options */
271 #define NO_ROUTE 0x00
272 #define ADD_ROUTE 0x01
273 #define ROUTE_ADDED 0x02
274 #define REMOVE_ROUTE 0x03
278 #define INARP_NONE 0x00
279 #define INARP_REQUEST 0x01
280 #define INARP_CONFIGURED 0x02
282 /* reasons for enabling the timer interrupt on the adapter */
283 #define TMR_INT_ENABLED_UDP 0x01
284 #define TMR_INT_ENABLED_UPDATE 0x02
285 #define TMR_INT_ENABLED_ARP 0x04
286 #define TMR_INT_ENABLED_UPDATE_STATE 0x08
287 #define TMR_INT_ENABLED_CONFIG 0x10
288 #define TMR_INT_ENABLED_UNCONFIG 0x20
291 typedef struct dlci_status
293 unsigned short dlci PACKED;
294 unsigned char state PACKED;
297 typedef struct dlci_IB_mapping
299 unsigned short dlci PACKED;
300 unsigned long addr_value PACKED;
303 /* This structure is used for DLCI list Tx interrupt mode. It is used to
304 enable interrupt bit and set the packet length for transmission
306 typedef struct fr_dlci_interface
308 unsigned char gen_interrupt PACKED;
309 unsigned short packet_length PACKED;
310 unsigned char reserved PACKED;
311 } fr_dlci_interface_t;
313 /* variable for keeping track of enabling/disabling FT1 monitor status */
314 static int rCount = 0;
316 extern void disable_irq(unsigned int);
317 extern void enable_irq(unsigned int);
319 /* variable for keeping track of number of interrupts generated during
320 * interrupt test routine
322 static int Intr_test_counter;
324 /****** Function Prototypes *************************************************/
326 /* WAN link driver entry points. These are called by the WAN router module. */
327 static int update(struct wan_device *wandev);
328 static int new_if(struct wan_device *wandev, struct net_device *dev,
330 static int del_if(struct wan_device *wandev, struct net_device *dev);
331 static void disable_comm (sdla_t *card);
333 /* WANPIPE-specific entry points */
334 static int wpf_exec(struct sdla *card, void *u_cmd, void *u_data);
336 /* Network device interface */
337 static int if_init(struct net_device *dev);
338 static int if_open(struct net_device *dev);
339 static int if_close(struct net_device *dev);
341 static void if_tx_timeout(struct net_device *dev);
343 static int if_rebuild_hdr (struct sk_buff *skb);
345 static int if_send(struct sk_buff *skb, struct net_device *dev);
346 static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev,
347 struct sk_buff *skb);
348 static struct net_device_stats *if_stats(struct net_device *dev);
350 /* Interrupt handlers */
351 static void fr_isr(sdla_t *card);
352 static void rx_intr(sdla_t *card);
353 static void tx_intr(sdla_t *card);
354 static void timer_intr(sdla_t *card);
355 static void spur_intr(sdla_t *card);
357 /* Frame relay firmware interface functions */
358 static int fr_read_version(sdla_t *card, char *str);
359 static int fr_configure(sdla_t *card, fr_conf_t *conf);
360 static int fr_dlci_configure(sdla_t *card, fr_dlc_conf_t *conf, unsigned dlci);
361 static int fr_init_dlci (sdla_t *card, fr_channel_t *chan);
362 static int fr_set_intr_mode (sdla_t *card, unsigned mode, unsigned mtu, unsigned short timeout);
363 static int fr_comm_enable(sdla_t *card);
364 static void fr_comm_disable(sdla_t *card);
365 static int fr_get_err_stats(sdla_t *card);
366 static int fr_get_stats(sdla_t *card);
367 static int fr_add_dlci(sdla_t *card, int dlci);
368 static int fr_activate_dlci(sdla_t *card, int dlci);
369 static int fr_delete_dlci (sdla_t* card, int dlci);
370 static int fr_issue_isf(sdla_t *card, int isf);
371 static int fr_send(sdla_t *card, int dlci, unsigned char attr, int len,
373 static int fr_send_data_header(sdla_t *card, int dlci, unsigned char attr, int len,
374 void *buf,unsigned char hdr_len);
375 static unsigned int fr_send_hdr(sdla_t *card, int dlci, unsigned int offset);
377 static int check_dlci_config (sdla_t *card, fr_channel_t *chan);
378 static void initialize_rx_tx_buffers (sdla_t *card);
381 /* Firmware asynchronous event handlers */
382 static int fr_event(sdla_t *card, int event, fr_mbox_t *mbox);
383 static int fr_modem_failure(sdla_t *card, fr_mbox_t *mbox);
384 static int fr_dlci_change(sdla_t *card, fr_mbox_t *mbox);
386 /* Miscellaneous functions */
387 static int update_chan_state(struct net_device *dev);
388 static void set_chan_state(struct net_device *dev, int state);
389 static struct net_device *find_channel(sdla_t *card, unsigned dlci);
390 static int is_tx_ready(sdla_t *card, fr_channel_t *chan);
391 static unsigned int dec_to_uint(unsigned char *str, int len);
392 static int reply_udp( unsigned char *data, unsigned int mbox_len );
394 static int intr_test( sdla_t* card );
395 static void init_chan_statistics( fr_channel_t* chan );
396 static void init_global_statistics( sdla_t* card );
397 static void read_DLCI_IB_mapping( sdla_t* card, fr_channel_t* chan );
398 static int setup_for_delayed_transmit(struct net_device* dev,
399 struct sk_buff *skb);
401 struct net_device *move_dev_to_next(sdla_t *card, struct net_device *dev);
402 static int check_tx_status(sdla_t *card, struct net_device *dev);
404 /* Frame Relay Socket API */
405 static void trigger_fr_bh (fr_channel_t *);
406 static void fr_bh(struct net_device *dev);
407 static int fr_bh_cleanup(struct net_device *dev);
408 static int bh_enqueue(struct net_device *dev, struct sk_buff *skb);
410 static void trigger_fr_poll(struct net_device *dev);
411 static void fr_poll(struct net_device *dev);
412 //static void add_gateway(struct net_device *dev);
414 static void trigger_unconfig_fr(struct net_device *dev);
415 static void unconfig_fr (sdla_t *);
417 static void trigger_config_fr (sdla_t *);
418 static void config_fr (sdla_t *);
421 /* Inverse ARP and Dynamic routing functions */
422 int process_ARP(arphdr_1490_t *ArpPacket, sdla_t *card, struct net_device *dev);
423 int is_arp(void *buf);
424 int send_inarp_request(sdla_t *card, struct net_device *dev);
426 static void trigger_fr_arp(struct net_device *dev);
427 static void fr_arp (unsigned long data);
430 /* Udp management functions */
431 static int process_udp_mgmt_pkt(sdla_t *card);
432 static int udp_pkt_type( struct sk_buff *skb, sdla_t *card );
433 static int store_udp_mgmt_pkt(int udp_type, char udp_pkt_src, sdla_t* card,
434 struct sk_buff *skb, int dlci);
437 static void switch_net_numbers(unsigned char *sendpacket,
438 unsigned long network_number, unsigned char incoming);
440 static int handle_IPXWAN(unsigned char *sendpacket, char *devname,
441 unsigned char enable_IPX, unsigned long network_number);
443 /* Lock Functions: SMP supported */
444 void s508_s514_unlock(sdla_t *card, unsigned long *smp_flags);
445 void s508_s514_lock(sdla_t *card, unsigned long *smp_flags);
447 unsigned short calc_checksum (char *, int);
448 static int setup_fr_header(struct sk_buff *skb,
449 struct net_device* dev, char op_mode);
452 /****** Public Functions ****************************************************/
454 /*============================================================================
455 * Frame relay protocol initialization routine.
457 * This routine is called by the main WANPIPE module during setup. At this
458 * point adapter is completely initialized and firmware is running.
459 * o read firmware version (to make sure it's alive)
460 * o configure adapter
461 * o initialize protocol-specific fields of the adapter data space.
466 int wpf_init(sdla_t *card, wandev_conf_t *conf)
470 fr508_flags_t* flags;
478 fr_buf_info_t* buf_info;
482 printk(KERN_INFO "\n");
484 /* Verify configuration ID */
485 if (conf->config_id != WANCONFIG_FR) {
487 printk(KERN_INFO "%s: invalid configuration ID %u!\n",
488 card->devname, conf->config_id);
493 /* Initialize protocol-specific fields of adapter data space */
494 switch (card->hw.fwid) {
497 card->mbox = (void*)(card->hw.dpmbase +
499 card->flags = (void*)(card->hw.dpmbase +
501 if(card->hw.type == SDLA_S514) {
502 card->mbox += FR_MB_VECTOR;
503 card->flags += FR_MB_VECTOR;
514 /* Read firmware version. Note that when adapter initializes, it
515 * clears the mailbox, so it may appear that the first command was
516 * executed successfully when in fact it was merely erased. To work
517 * around this, we execute the first command twice.
520 if (fr_read_version(card, NULL) || fr_read_version(card, u.str))
523 printk(KERN_INFO "%s: running frame relay firmware v%s\n",
524 card->devname, u.str);
526 /* Adjust configuration */
527 conf->mtu += FR_HEADER_LEN;
528 conf->mtu = (conf->mtu >= MIN_LGTH_FR_DATA_CFG) ?
529 min_t(unsigned int, conf->mtu, FR_MAX_NO_DATA_BYTES_IN_FRAME) :
530 FR_CHANNEL_MTU + FR_HEADER_LEN;
532 conf->bps = min_t(unsigned int, conf->bps, 2048000);
534 /* Initialze the configuration structure sent to the board to zero */
535 memset(&u.cfg, 0, sizeof(u.cfg));
537 memset(card->u.f.dlci_to_dev_map, 0, sizeof(card->u.f.dlci_to_dev_map));
539 /* Configure adapter firmware */
541 u.cfg.mtu = conf->mtu;
542 u.cfg.kbps = conf->bps / 1000;
544 u.cfg.cir_fwd = u.cfg.cir_bwd = 16;
545 u.cfg.bc_fwd = u.cfg.bc_bwd = 16;
547 u.cfg.options = 0x0000;
548 printk(KERN_INFO "%s: Global CIR enabled by Default\n", card->devname);
550 switch (conf->u.fr.signalling) {
553 u.cfg.options = 0x0000;
557 u.cfg.options |= 0x0200;
561 u.cfg.options |= 0x0400;
565 u.cfg.options |= 0x0800;
568 printk(KERN_INFO "%s: Illegal Signalling option\n",
574 card->wandev.signalling = conf->u.fr.signalling;
576 if (conf->station == WANOPT_CPE) {
579 if (conf->u.fr.signalling == WANOPT_NO){
581 "%s: ERROR - For NO signalling, station must be set to Node!",
587 u.cfg.options |= 0x8000; /* auto config DLCI */
588 card->u.f.dlci_num = 0;
592 u.cfg.station = 1; /* switch emulation mode */
594 /* For switch emulation we have to create a list of dlci(s)
595 * that will be sent to be global SET_DLCI_CONFIGURATION
596 * command in fr_configure() routine.
599 card->u.f.dlci_num = min_t(unsigned int, max_t(unsigned int, conf->u.fr.dlci_num, 1), 100);
601 for ( i = 0; i < card->u.f.dlci_num; i++) {
603 card->u.f.node_dlci[i] = (unsigned short)
604 conf->u.fr.dlci[i] ? conf->u.fr.dlci[i] : 16;
609 if (conf->clocking == WANOPT_INTERNAL)
610 u.cfg.port |= 0x0001;
612 if (conf->interface == WANOPT_RS232)
613 u.cfg.port |= 0x0002;
616 u.cfg.t391 = min_t(unsigned int, conf->u.fr.t391, 30);
621 u.cfg.t392 = min_t(unsigned int, conf->u.fr.t392, 30);
626 u.cfg.n391 = min_t(unsigned int, conf->u.fr.n391, 255);
631 u.cfg.n392 = min_t(unsigned int, conf->u.fr.n392, 10);
636 u.cfg.n393 = min_t(unsigned int, conf->u.fr.n393, 10);
640 if (fr_configure(card, &u.cfg))
643 if (card->hw.type == SDLA_S514) {
645 buf_info = (void*)(card->hw.dpmbase + FR_MB_VECTOR +
648 card->rxmb = (void*)(buf_info->rse_next + card->hw.dpmbase);
650 card->u.f.rxmb_base =
651 (void*)(buf_info->rse_base + card->hw.dpmbase);
653 card->u.f.rxmb_last =
654 (void*)(buf_info->rse_base +
655 (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) +
658 buf_info = (void*)(card->hw.dpmbase + FR508_RXBC_OFFS);
660 card->rxmb = (void*)(buf_info->rse_next -
661 FR_MB_VECTOR + card->hw.dpmbase);
663 card->u.f.rxmb_base =
664 (void*)(buf_info->rse_base -
665 FR_MB_VECTOR + card->hw.dpmbase);
667 card->u.f.rxmb_last =
668 (void*)(buf_info->rse_base +
669 (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) -
670 FR_MB_VECTOR + card->hw.dpmbase);
673 card->u.f.rx_base = buf_info->buf_base;
674 card->u.f.rx_top = buf_info->buf_top;
676 card->u.f.tx_interrupts_pending = 0;
678 card->wandev.mtu = conf->mtu;
679 card->wandev.bps = conf->bps;
680 card->wandev.interface = conf->interface;
681 card->wandev.clocking = conf->clocking;
682 card->wandev.station = conf->station;
684 card->exec = &wpf_exec;
685 card->wandev.update = &update;
686 card->wandev.new_if = &new_if;
687 card->wandev.del_if = &del_if;
688 card->wandev.state = WAN_DISCONNECTED;
689 card->wandev.ttl = conf->ttl;
690 card->wandev.udp_port = conf->udp_port;
691 card->disable_comm = &disable_comm;
692 card->u.f.arp_dev = NULL;
694 /* Intialize global statistics for a card */
695 init_global_statistics( card );
697 card->TracingEnabled = 0;
700 Intr_test_counter = 0;
701 card->intr_mode = INTR_TEST_MODE;
702 err = intr_test( card );
704 printk(KERN_INFO "%s: End of Interrupt Test rc=0x%x count=%i\n",
705 card->devname,err,Intr_test_counter);
707 if (err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) {
708 printk(KERN_ERR "%s: Interrupt Test Failed, Counter: %i\n",
709 card->devname, Intr_test_counter);
710 printk(KERN_ERR "Please choose another interrupt\n");
715 printk(KERN_INFO "%s: Interrupt Test Passed, Counter: %i\n",
716 card->devname, Intr_test_counter);
719 /* Apr 28 2000. Nenad Corbic
720 * Enable commnunications here, not in if_open or new_if, since
721 * interfaces come down when the link is disconnected.
724 /* If you enable comms and then set ints, you get a Tx int as you
725 * perform the SET_INT_TRIGGERS command. So, we only set int
726 * triggers and then adjust the interrupt mask (to disable Tx ints)
727 * before enabling comms.
729 if (fr_set_intr_mode(card, (FR_INTR_RXRDY | FR_INTR_TXRDY |
730 FR_INTR_DLC | FR_INTR_TIMER | FR_INTR_TX_MULT_DLCIs) ,
731 card->wandev.mtu, 0)) {
735 flags->imask &= ~(FR_INTR_TXRDY | FR_INTR_TIMER);
737 if (fr_comm_enable(card)) {
740 wanpipe_set_state(card, WAN_CONNECTED);
741 spin_lock_init(&card->u.f.if_send_lock);
743 printk(KERN_INFO "\n");
748 /******* WAN Device Driver Entry Points *************************************/
750 /*============================================================================
751 * Update device status & statistics.
753 static int update(struct wan_device* wandev)
755 volatile sdla_t* card;
756 unsigned long timeout;
757 fr508_flags_t* flags;
760 if ((wandev == NULL) || (wandev->private == NULL))
763 if (wandev->state == WAN_UNCONFIGURED)
766 card = wandev->private;
770 card->u.f.update_comms_stats = 1;
771 card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UPDATE;
772 flags->imask |= FR_INTR_TIMER;
775 if(card->u.f.update_comms_stats == 0)
777 if (time_after(jiffies, timeout + 1 * HZ)){
778 card->u.f.update_comms_stats = 0;
786 /*============================================================================
787 * Create new logical channel.
788 * This routine is called by the router when ROUTER_IFNEW IOCTL is being
790 * o parse media- and hardware-specific configuration
791 * o make sure that a new channel can be created
792 * o allocate resources, if necessary
793 * o prepare network device structure for registaration.
796 * < 0 failure (channel will not be created)
798 static int new_if(struct wan_device* wandev, struct net_device* dev,
801 sdla_t* card = wandev->private;
807 if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
809 printk(KERN_INFO "%s: Invalid interface name!\n",
814 /* allocate and initialize private data */
815 chan = kmalloc(sizeof(fr_channel_t), GFP_KERNEL);
820 memset(chan, 0, sizeof(fr_channel_t));
821 strcpy(chan->name, conf->name);
824 /* verify media address */
825 if (is_digit(conf->addr[0])) {
827 dlci = dec_to_uint(conf->addr, 0);
829 if (dlci && (dlci <= HIGHEST_VALID_DLCI)) {
836 "%s: Invalid DLCI %u on interface %s!\n",
837 wandev->name, dlci, chan->name);
843 "%s: Invalid media address on interface %s!\n",
844 wandev->name, chan->name);
848 if ((chan->true_if_encoding = conf->true_if_encoding) == WANOPT_YES){
850 "%s: Enabling, true interface type encoding.\n",
856 /* Setup wanpipe as a router (WANPIPE) even if it is
857 * a bridged DLCI, or as an API
859 if (strcmp(conf->usedby, "WANPIPE") == 0 ||
860 strcmp(conf->usedby, "BRIDGE") == 0 ||
861 strcmp(conf->usedby, "BRIDGE_N") == 0){
863 if(strcmp(conf->usedby, "WANPIPE") == 0){
864 chan->common.usedby = WANPIPE;
866 printk(KERN_INFO "%s: Running in WANPIPE mode.\n",
869 }else if(strcmp(conf->usedby, "BRIDGE") == 0){
871 chan->common.usedby = BRIDGE;
873 printk(KERN_INFO "%s: Running in WANPIPE (BRIDGE) mode.\n",
875 }else if( strcmp(conf->usedby, "BRIDGE_N") == 0 ){
877 chan->common.usedby = BRIDGE_NODE;
879 printk(KERN_INFO "%s: Running in WANPIPE (BRIDGE_NODE) mode.\n",
884 /* Dynamic interface configuration option.
885 * On disconnect, if the options is selected,
886 * the interface will be brought down */
887 if (conf->if_down == WANOPT_YES){
888 set_bit(DYN_OPT_ON,&chan->interface_down);
890 "%s: Dynamic interface configuration enabled.\n",
895 } else if(strcmp(conf->usedby, "API") == 0){
897 chan->common.usedby = API;
898 printk(KERN_INFO "%s: Running in API mode.\n",
908 /* place cir,be,bc and other channel specific information into the
913 chan->cir = max_t(unsigned int, 1,
914 min_t(unsigned int, conf->cir, 512));
915 chan->cir_status = CIR_ENABLED;
918 /* If CIR is enabled, force BC to equal CIR
919 * this solves number of potential problems if CIR is
922 chan->bc = chan->cir;
925 chan->be = max_t(unsigned int,
926 0, min_t(unsigned int, conf->be, 511));
931 printk (KERN_INFO "%s: CIR enabled for DLCI %i \n",
932 wandev->name,chan->dlci);
933 printk (KERN_INFO "%s: CIR = %i ; BC = %i ; BE = %i\n",
934 wandev->name,chan->cir,chan->bc,chan->be);
938 chan->cir_status = CIR_DISABLED;
939 printk (KERN_INFO "%s: CIR disabled for DLCI %i\n",
940 wandev->name,chan->dlci);
945 if (conf->inarp == WANOPT_YES){
946 printk(KERN_INFO "%s: Inverse ARP Support Enabled\n",card->devname);
947 chan->inarp = conf->inarp ? INARP_REQUEST : INARP_NONE;
948 chan->inarp_interval = conf->inarp_interval ? conf->inarp_interval : 10;
950 printk(KERN_INFO "%s: Inverse ARP Support Disabled\n",card->devname);
951 chan->inarp = INARP_NONE;
952 chan->inarp_interval = 10;
956 chan->dlci_configured = DLCI_NOT_CONFIGURED;
959 /*FIXME: IPX disabled in this WANPIPE version */
960 if (conf->enable_IPX == WANOPT_YES){
961 printk(KERN_INFO "%s: ERROR - This version of WANPIPE doesn't support IPX\n",
966 chan->enable_IPX = WANOPT_NO;
969 if (conf->network_number){
970 chan->network_number = conf->network_number;
972 chan->network_number = 0xDEADBEEF;
975 chan->route_flag = NO_ROUTE;
977 init_chan_statistics(chan);
979 chan->transmit_length = 0;
981 /* prepare network device data space for registration */
982 strcpy(dev->name,chan->name);
984 dev->init = &if_init;
987 /* Initialize FR Polling Task Queue
988 * We need a poll routine for each network
991 INIT_WORK(&chan->fr_poll_work, (void *)fr_poll, dev);
993 init_timer(&chan->fr_arp_timer);
994 chan->fr_arp_timer.data=(unsigned long)dev;
995 chan->fr_arp_timer.function = fr_arp;
997 wandev->new_if_cnt++;
999 /* Tells us that if this interface is a
1001 if ((chan->gateway = conf->gateway) == WANOPT_YES){
1002 printk(KERN_INFO "%s: Interface %s is set as a gateway.\n",
1003 card->devname,dev->name);
1006 /* M. Grant Patch Apr 28 2000
1007 * Disallow duplicate dlci configurations. */
1008 if (card->u.f.dlci_to_dev_map[chan->dlci] != NULL) {
1013 /* Configure this dlci at a later date, when
1014 * the interface comes up. i.e. when if_open()
1016 set_bit(0,&chan->config_dlci);
1018 printk(KERN_INFO "\n");
1023 /*============================================================================
1024 * Delete logical channel.
1026 static int del_if(struct wan_device* wandev, struct net_device* dev)
1028 fr_channel_t* chan = dev->priv;
1029 unsigned long smp_flags=0;
1031 /* This interface is dead, make sure the
1032 * ARP timer is stopped */
1033 del_timer(&chan->fr_arp_timer);
1035 /* If we are a NODE, we must unconfigure this DLCI
1036 * Trigger an unconfigure command that will
1037 * be executed in timer interrupt. We must wait
1038 * for the command to complete. */
1039 trigger_unconfig_fr(dev);
1041 lock_adapter_irq(&wandev->lock, &smp_flags);
1042 wandev->new_if_cnt--;
1043 unlock_adapter_irq(&wandev->lock, &smp_flags);
1049 /*=====================================================================
1053 * Disable communications.
1054 * This code runs in shutdown (sdlamain.c)
1055 * under critical flag. Therefore it is not
1056 * necessary to set a critical flag here
1059 * Commnunications are disabled only on a card
1063 static void disable_comm (sdla_t *card)
1065 printk(KERN_INFO "%s: Disabling Communications!\n",
1067 fr_comm_disable(card);
1070 /****** WANPIPE-specific entry points ***************************************/
1072 /*============================================================================
1073 * Execute adapter interface command.
1075 static int wpf_exec (struct sdla* card, void* u_cmd, void* u_data)
1077 fr_mbox_t* mbox = card->mbox;
1078 int retry = MAX_CMD_RETRY;
1082 if(copy_from_user((void*)&cmd, u_cmd, sizeof(cmd)))
1085 /* execute command */
1088 memcpy(&mbox->cmd, &cmd, sizeof(cmd));
1091 if( copy_from_user((void*)&mbox->data, u_data, cmd.length))
1095 if (sdla_exec(mbox))
1096 err = mbox->cmd.result;
1100 } while (err && retry-- && fr_event(card, err, mbox));
1103 if (copy_to_user(u_cmd, (void*)&mbox->cmd, sizeof(fr_cmd_t)))
1106 len = mbox->cmd.length;
1108 if (len && u_data && !copy_to_user(u_data, (void*)&mbox->data, len))
1113 /****** Network Device Interface ********************************************/
1115 /*============================================================================
1116 * Initialize Linux network interface.
1118 * This routine is called only once for each interface, during Linux network
1119 * interface registration. Returning anything but zero will fail interface
1122 static int if_init(struct net_device* dev)
1124 fr_channel_t* chan = dev->priv;
1125 sdla_t* card = chan->card;
1126 struct wan_device* wandev = &card->wandev;
1128 /* Initialize device driver entry points */
1129 dev->open = &if_open;
1130 dev->stop = &if_close;
1131 dev->hard_header = NULL;
1132 dev->rebuild_header = &if_rebuild_hdr;
1133 dev->hard_start_xmit = &if_send;
1134 dev->get_stats = &if_stats;
1135 dev->tx_timeout = &if_tx_timeout;
1136 dev->watchdog_timeo = TX_TIMEOUT;
1138 if (chan->common.usedby == WANPIPE || chan->common.usedby == API){
1140 /* Initialize media-specific parameters */
1141 if (chan->true_if_encoding){
1142 dev->type = ARPHRD_DLCI; /* This breaks tcpdump */
1144 dev->type = ARPHRD_PPP; /* ARP h/w type */
1147 dev->flags |= IFF_POINTOPOINT;
1148 dev->flags |= IFF_NOARP;
1150 /* Enable Multicast addressing */
1151 if (chan->mc == WANOPT_YES){
1152 dev->flags |= IFF_MULTICAST;
1155 dev->mtu = wandev->mtu - FR_HEADER_LEN;
1156 /* For an API, the maximum number of bytes that the stack will pass
1157 to the driver is (dev->mtu + dev->hard_header_len). So, adjust the
1158 mtu so that a frame of maximum size can be transmitted by the API.
1160 if(chan->common.usedby == API) {
1161 dev->mtu += (sizeof(api_tx_hdr_t) - FR_HEADER_LEN);
1164 dev->hard_header_len = FR_HEADER_LEN;/* media header length */
1165 dev->addr_len = 2; /* hardware address length */
1166 *(unsigned short*)dev->dev_addr = htons(chan->dlci);
1168 /* Set transmit buffer queue length */
1169 dev->tx_queue_len = 100;
1173 /* Setup the interface for Bridging */
1177 /* Use a random number to generate the MAC address */
1178 memcpy(dev->dev_addr, "\xFE\xFC\x00\x00\x00\x00", 6);
1179 get_random_bytes(&hw_addr, sizeof(hw_addr));
1180 *(int *)(dev->dev_addr + 2) += hw_addr;
1183 /* Initialize hardware parameters (just for reference) */
1184 dev->irq = wandev->irq;
1185 dev->dma = wandev->dma;
1186 dev->base_addr = wandev->ioport;
1187 dev->mem_start = wandev->maddr;
1188 dev->mem_end = wandev->maddr + wandev->msize - 1;
1189 SET_MODULE_OWNER(dev);
1194 /*============================================================================
1195 * Open network interface.
1196 * o if this is the first open, then enable communications and interrupts.
1197 * o prevent module from unloading by incrementing use count
1199 * Return 0 if O.k. or errno.
1201 static int if_open(struct net_device* dev)
1203 fr_channel_t* chan = dev->priv;
1204 sdla_t* card = chan->card;
1208 if (netif_running(dev))
1211 /* Initialize the task queue */
1214 INIT_WORK(&chan->common.wanpipe_work, (void *)fr_bh, dev);
1216 /* Allocate and initialize BH circular buffer */
1217 chan->bh_head = kmalloc((sizeof(bh_data_t)*MAX_BH_BUFF),GFP_ATOMIC);
1218 memset(chan->bh_head,0,(sizeof(bh_data_t)*MAX_BH_BUFF));
1219 atomic_set(&chan->bh_buff_used, 0);
1221 netif_start_queue(dev);
1224 do_gettimeofday( &tv );
1225 chan->router_start_time = tv.tv_sec;
1227 if (test_bit(0,&chan->config_dlci)){
1228 trigger_config_fr (card);
1229 }else if (chan->inarp == INARP_REQUEST){
1230 trigger_fr_arp(dev);
1236 /*============================================================================
1237 * Close network interface.
1238 * o if this is the last open, then disable communications and interrupts.
1241 static int if_close(struct net_device* dev)
1243 fr_channel_t* chan = dev->priv;
1244 sdla_t* card = chan->card;
1246 if (chan->inarp == INARP_CONFIGURED) {
1247 chan->inarp = INARP_REQUEST;
1250 netif_stop_queue(dev);
1251 wanpipe_close(card);
1256 /*============================================================================
1257 * Re-build media header.
1259 * Return: 1 physical address resolved.
1260 * 0 physical address not resolved
1262 static int if_rebuild_hdr (struct sk_buff* skb)
1264 struct net_device *dev = skb->dev;
1265 fr_channel_t* chan = dev->priv;
1266 sdla_t* card = chan->card;
1268 printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n",
1269 card->devname, dev->name);
1273 /*============================================================================
1274 * Handle transmit timeout event from netif watchdog
1276 static void if_tx_timeout(struct net_device *dev)
1278 fr_channel_t* chan = dev->priv;
1279 sdla_t *card = chan->card;
1281 /* If our device stays busy for at least 5 seconds then we will
1282 * kick start the device by making dev->tbusy = 0. We expect
1283 * that our device never stays busy more than 5 seconds. So this
1284 * is only used as a last resort.
1287 chan->drvstats_if_send.if_send_tbusy++;
1288 ++chan->ifstats.collisions;
1290 printk (KERN_INFO "%s: Transmit timed out on %s\n",
1291 card->devname, dev->name);
1292 chan->drvstats_if_send.if_send_tbusy_timeout++;
1293 netif_wake_queue (dev);
1298 /*============================================================================
1299 * Send a packet on a network interface.
1300 * o set tbusy flag (marks start of the transmission) to block a timer-based
1301 * transmit from overlapping.
1302 * o set critical flag when accessing board.
1303 * o check link state. If link is not up, then drop the packet.
1304 * o check channel status. If it's down then initiate a call.
1305 * o pass a packet to corresponding WAN device.
1306 * o free socket buffer
1308 * Return: 0 complete (socket buffer must be freed)
1309 * non-0 packet may be re-transmitted (tbusy must be set)
1312 * 1. This routine is called either by the protocol stack or by the "net
1313 * bottom half" (with interrupts enabled).
1315 * 2. Using netif_start_queue() and netif_stop_queue()
1316 * will inhibit further transmit requests from the protocol stack
1317 * and can be used for flow control with protocol layer.
1319 static int if_send(struct sk_buff* skb, struct net_device* dev)
1321 fr_channel_t* chan = dev->priv;
1322 sdla_t* card = chan->card;
1324 unsigned char *sendpacket;
1325 fr508_flags_t* adptr_flags = card->flags;
1327 long delay_tx_queued = 0;
1328 unsigned long smp_flags=0;
1329 unsigned char attr = 0;
1331 chan->drvstats_if_send.if_send_entry++;
1333 netif_stop_queue(dev);
1336 /* if we get here, some higher layer thinks we've missed an
1337 * tx-done interrupt.
1339 printk(KERN_INFO "%s: interface %s got kicked!\n",
1340 card->devname, dev->name);
1341 chan->drvstats_if_send.if_send_skb_null ++;
1343 netif_wake_queue(dev);
1347 /* If a peripheral task is running just drop packets */
1348 if (test_bit(PERI_CRIT, &card->wandev.critical)){
1350 printk(KERN_INFO "%s: Critical in if_send(): Peripheral running!\n",
1353 dev_kfree_skb_any(skb);
1354 netif_start_queue(dev);
1358 /* We must set the 'tbusy' flag if we already have a packet queued for
1359 transmission in the transmit interrupt handler. However, we must
1360 ensure that the transmit interrupt does not reset the 'tbusy' flag
1361 just before we set it, as this will result in a "transmit timeout".
1363 set_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical);
1364 if(chan->transmit_length) {
1365 netif_stop_queue(dev);
1366 chan->tick_counter = jiffies;
1367 clear_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical);
1370 clear_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical);
1372 /* Move the if_header() code to here. By inserting frame
1373 * relay header in if_header() we would break the
1374 * tcpdump and other packet sniffers */
1375 chan->fr_header_len = setup_fr_header(skb,dev,chan->common.usedby);
1376 if (chan->fr_header_len < 0 ){
1377 ++chan->ifstats.tx_dropped;
1378 ++card->wandev.stats.tx_dropped;
1380 dev_kfree_skb_any(skb);
1381 netif_start_queue(dev);
1385 sendpacket = skb->data;
1387 udp_type = udp_pkt_type(skb, card);
1389 if(udp_type != UDP_INVALID_TYPE) {
1390 if(store_udp_mgmt_pkt(udp_type, UDP_PKT_FRM_STACK, card, skb,
1392 adptr_flags->imask |= FR_INTR_TIMER;
1393 if (udp_type == UDP_FPIPE_TYPE){
1394 chan->drvstats_if_send.
1395 if_send_PIPE_request ++;
1398 netif_start_queue(dev);
1402 //FIXME: can we do better than sendpacket[2]?
1403 if ((chan->common.usedby == WANPIPE) && (sendpacket[2] == 0x45)) {
1405 /* check to see if the source IP address is a broadcast or */
1406 /* multicast IP address */
1407 if(chk_bcast_mcast_addr(card, dev, skb)){
1408 ++chan->ifstats.tx_dropped;
1409 ++card->wandev.stats.tx_dropped;
1410 dev_kfree_skb_any(skb);
1411 netif_start_queue(dev);
1417 /* Lock the S514/S508 card: SMP Supported */
1418 s508_s514_lock(card,&smp_flags);
1420 if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
1422 chan->drvstats_if_send.if_send_critical_non_ISR ++;
1423 chan->ifstats.tx_dropped ++;
1424 printk(KERN_INFO "%s Critical in IF_SEND: if_send() already running!\n",
1426 goto if_send_start_and_exit;
1429 /* API packet check: minimum packet size must be greater than
1430 * 16 byte API header */
1431 if((chan->common.usedby == API) && (skb->len <= sizeof(api_tx_hdr_t))) {
1432 ++chan->ifstats.tx_dropped;
1433 ++card->wandev.stats.tx_dropped;
1436 goto if_send_start_and_exit;
1439 /* During API transmission, get rid of the API header */
1440 if (chan->common.usedby == API) {
1441 api_tx_hdr_t* api_tx_hdr;
1442 api_tx_hdr = (api_tx_hdr_t*)&skb->data[0x00];
1443 attr = api_tx_hdr->attr;
1444 skb_pull(skb,sizeof(api_tx_hdr_t));
1448 if (card->wandev.state != WAN_CONNECTED) {
1449 chan->drvstats_if_send.if_send_wan_disconnected ++;
1450 ++chan->ifstats.tx_dropped;
1451 ++card->wandev.stats.tx_dropped;
1453 } else if (chan->common.state != WAN_CONNECTED) {
1454 chan->drvstats_if_send.if_send_dlci_disconnected ++;
1456 /* Update the DLCI state in timer interrupt */
1457 card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UPDATE_STATE;
1458 adptr_flags->imask |= FR_INTR_TIMER;
1460 ++chan->ifstats.tx_dropped;
1461 ++card->wandev.stats.tx_dropped;
1463 } else if (!is_tx_ready(card, chan)) {
1464 /* No tx buffers available, store for delayed transmit */
1465 if (!setup_for_delayed_transmit(dev, skb)){
1466 set_bit(1,&delay_tx_queued);
1468 chan->drvstats_if_send.if_send_no_bfrs++;
1470 } else if (!skb->protocol) {
1471 /* No protocols drop packet */
1472 chan->drvstats_if_send.if_send_protocol_error ++;
1473 ++card->wandev.stats.tx_errors;
1475 } else if (test_bit(ARP_CRIT,&card->wandev.critical)){
1476 /* We are trying to send an ARP Packet, block IP data until
1478 ++chan->ifstats.tx_dropped;
1479 ++card->wandev.stats.tx_dropped;
1482 //FIXME: IPX is not implemented in this version of Frame Relay ?
1483 if((chan->common.usedby == WANPIPE) &&
1484 sendpacket[1] == 0x00 &&
1485 sendpacket[2] == 0x80 &&
1486 sendpacket[6] == 0x81 &&
1487 sendpacket[7] == 0x37) {
1489 if( chan->enable_IPX ) {
1490 switch_net_numbers(sendpacket,
1491 chan->network_number, 0);
1493 //FIXME: Take this out when IPX is fixed
1495 "%s: WARNING: Unsupported IPX data in send, packet dropped\n",
1500 err = fr_send_data_header(card, chan->dlci, attr, skb->len, skb->data, chan->fr_header_len);
1503 case FRRES_CIR_OVERFLOW:
1504 case FRRES_BUFFER_OVERFLOW:
1505 if (!setup_for_delayed_transmit(dev, skb)){
1506 set_bit(1,&delay_tx_queued);
1508 chan->drvstats_if_send.
1509 if_send_adptr_bfrs_full ++;
1512 case FRRES_TOO_LONG:
1513 if (net_ratelimit()){
1515 "%s: Error: Frame too long, transmission failed %i\n",
1516 card->devname, (unsigned int)skb->len);
1518 /* Drop down to default */
1520 chan->drvstats_if_send.
1521 if_send_dlci_disconnected ++;
1522 ++chan->ifstats.tx_dropped;
1523 ++card->wandev.stats.tx_dropped;
1527 chan->drvstats_if_send.
1528 if_send_bfr_passed_to_adptr++;
1529 ++chan->ifstats.tx_packets;
1530 ++card->wandev.stats.tx_packets;
1532 chan->ifstats.tx_bytes += skb->len;
1533 card->wandev.stats.tx_bytes += skb->len;
1534 dev->trans_start = jiffies;
1539 if_send_start_and_exit:
1541 netif_start_queue(dev);
1543 /* If we queued the packet for transmission, we must not
1544 * deallocate it. The packet is unlinked from the IP stack
1545 * not copied. Therefore, we must keep the original packet */
1546 if (!test_bit(1,&delay_tx_queued)) {
1547 dev_kfree_skb_any(skb);
1549 adptr_flags->imask |= FR_INTR_TXRDY;
1550 card->u.f.tx_interrupts_pending ++;
1553 clear_bit(SEND_CRIT, (void*)&card->wandev.critical);
1555 s508_s514_unlock(card,&smp_flags);
1562 /*============================================================================
1563 * Setup so that a frame can be transmitted on the occurrence of a transmit
1566 static int setup_for_delayed_transmit(struct net_device* dev,
1567 struct sk_buff *skb)
1569 fr_channel_t* chan = dev->priv;
1570 sdla_t* card = chan->card;
1571 fr_dlci_interface_t* dlci_interface;
1574 /* Check that the dlci is properly configured,
1575 * before using tx interrupt */
1576 if (!chan->dlci_int_interface){
1577 if (net_ratelimit()){
1579 "%s: ERROR on DLCI %i: Not configured properly !\n",
1580 card->devname, chan->dlci);
1581 printk(KERN_INFO "%s: Please contact Sangoma Technologies\n",
1587 dlci_interface = chan->dlci_int_interface;
1589 if(chan->transmit_length) {
1590 printk(KERN_INFO "%s: Big mess in setup_for_del...\n",
1595 if(len > FR_MAX_NO_DATA_BYTES_IN_FRAME) {
1596 //FIXME: increment some statistic */
1600 chan->transmit_length = len;
1601 chan->delay_skb = skb;
1603 dlci_interface->gen_interrupt |= FR_INTR_TXRDY;
1604 dlci_interface->packet_length = len;
1606 /* Turn on TX interrupt at the end of if_send */
1611 /*============================================================================
1612 * Check to see if the packet to be transmitted contains a broadcast or
1613 * multicast source IP address.
1614 * Return 0 if not broadcast/multicast address, otherwise return 1.
1617 static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev,
1618 struct sk_buff *skb)
1621 u32 broadcast_ip_addr = 0;
1622 struct in_device *in_dev;
1623 fr_channel_t* chan = dev->priv;
1625 /* read the IP source address from the outgoing packet */
1626 src_ip_addr = *(u32 *)(skb->data + 14);
1628 /* read the IP broadcast address for the device */
1629 in_dev = dev->ip_ptr;
1630 if(in_dev != NULL) {
1631 struct in_ifaddr *ifa= in_dev->ifa_list;
1633 broadcast_ip_addr = ifa->ifa_broadcast;
1638 /* check if the IP Source Address is a Broadcast address */
1639 if((dev->flags & IFF_BROADCAST) && (src_ip_addr == broadcast_ip_addr)) {
1641 "%s: Broadcast Source Address silently discarded\n",
1646 /* check if the IP Source Address is a Multicast address */
1647 if((chan->mc == WANOPT_NO) && (ntohl(src_ip_addr) >= 0xE0000001) &&
1648 (ntohl(src_ip_addr) <= 0xFFFFFFFE)) {
1650 "%s: Multicast Source Address silently discarded\n",
1658 /*============================================================================
1659 * Reply to UDP Management system.
1662 static int reply_udp( unsigned char *data, unsigned int mbox_len )
1664 unsigned short len, udp_length, temp, ip_length;
1665 unsigned long ip_temp;
1669 fr_udp_pkt_t *fr_udp_pkt = (fr_udp_pkt_t *)data;
1671 /* Set length of packet */
1672 len = //sizeof(fr_encap_hdr_t)+
1680 /* fill in UDP reply */
1681 fr_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
1683 /* fill in UDP length */
1684 udp_length = sizeof(udp_pkt_t)+
1690 /* put it on an even boundary */
1691 if ( udp_length & 0x0001 ) {
1697 temp = (udp_length<<8)|(udp_length>>8);
1698 fr_udp_pkt->udp_pkt.udp_length = temp;
1700 /* swap UDP ports */
1701 temp = fr_udp_pkt->udp_pkt.udp_src_port;
1702 fr_udp_pkt->udp_pkt.udp_src_port =
1703 fr_udp_pkt->udp_pkt.udp_dst_port;
1704 fr_udp_pkt->udp_pkt.udp_dst_port = temp;
1708 /* add UDP pseudo header */
1710 *((unsigned short *)
1711 (fr_udp_pkt->data+mbox_len+even_bound)) = temp;
1712 temp = (udp_length<<8)|(udp_length>>8);
1713 *((unsigned short *)
1714 (fr_udp_pkt->data+mbox_len+even_bound+2)) = temp;
1716 /* calculate UDP checksum */
1717 fr_udp_pkt->udp_pkt.udp_checksum = 0;
1719 fr_udp_pkt->udp_pkt.udp_checksum =
1720 calc_checksum(&data[UDP_OFFSET/*+sizeof(fr_encap_hdr_t)*/],
1721 udp_length+UDP_OFFSET);
1723 /* fill in IP length */
1724 ip_length = udp_length + sizeof(ip_pkt_t);
1725 temp = (ip_length<<8)|(ip_length>>8);
1726 fr_udp_pkt->ip_pkt.total_length = temp;
1728 /* swap IP addresses */
1729 ip_temp = fr_udp_pkt->ip_pkt.ip_src_address;
1730 fr_udp_pkt->ip_pkt.ip_src_address =
1731 fr_udp_pkt->ip_pkt.ip_dst_address;
1732 fr_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
1735 /* fill in IP checksum */
1736 fr_udp_pkt->ip_pkt.hdr_checksum = 0;
1737 fr_udp_pkt->ip_pkt.hdr_checksum =
1738 calc_checksum(&data[/*sizeof(fr_encap_hdr_t)*/0],
1744 unsigned short calc_checksum (char *data, int len)
1746 unsigned short temp;
1747 unsigned long sum=0;
1750 for( i = 0; i <len; i+=2 ) {
1751 memcpy(&temp,&data[i],2);
1752 sum += (unsigned long)temp;
1755 while (sum >> 16 ) {
1756 sum = (sum & 0xffffUL) + (sum >> 16);
1759 temp = (unsigned short)sum;
1769 If incoming is 0 (outgoing)- if the net numbers is ours make it 0
1770 if incoming is 1 - if the net number is 0 make it ours
1773 static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, unsigned char incoming)
1775 unsigned long pnetwork_number;
1777 pnetwork_number = (unsigned long)((sendpacket[14] << 24) +
1778 (sendpacket[15] << 16) + (sendpacket[16] << 8) +
1782 /* If the destination network number is ours, make it 0 */
1783 if( pnetwork_number == network_number) {
1784 sendpacket[14] = sendpacket[15] = sendpacket[16] =
1785 sendpacket[17] = 0x00;
1788 /* If the incoming network is 0, make it ours */
1789 if( pnetwork_number == 0) {
1790 sendpacket[14] = (unsigned char)(network_number >> 24);
1791 sendpacket[15] = (unsigned char)((network_number &
1793 sendpacket[16] = (unsigned char)((network_number &
1795 sendpacket[17] = (unsigned char)(network_number &
1801 pnetwork_number = (unsigned long)((sendpacket[26] << 24) +
1802 (sendpacket[27] << 16) + (sendpacket[28] << 8) +
1806 /* If the source network is ours, make it 0 */
1807 if( pnetwork_number == network_number) {
1808 sendpacket[26] = sendpacket[27] = sendpacket[28] =
1809 sendpacket[29] = 0x00;
1812 /* If the source network is 0, make it ours */
1813 if( pnetwork_number == 0 ) {
1814 sendpacket[26] = (unsigned char)(network_number >> 24);
1815 sendpacket[27] = (unsigned char)((network_number &
1817 sendpacket[28] = (unsigned char)((network_number &
1819 sendpacket[29] = (unsigned char)(network_number &
1823 } /* switch_net_numbers */
1825 /*============================================================================
1826 * Get ethernet-style interface statistics.
1827 * Return a pointer to struct enet_statistics.
1829 static struct net_device_stats *if_stats(struct net_device *dev)
1831 fr_channel_t* chan = dev->priv;
1836 return &chan->ifstats;
1839 /****** Interrupt Handlers **************************************************/
1841 /*============================================================================
1842 * fr_isr: S508 frame relay interrupt service routine.
1845 * Frame relay main interrupt service route. This
1846 * function check the interrupt type and takes
1847 * the appropriate action.
1849 static void fr_isr (sdla_t* card)
1851 fr508_flags_t* flags = card->flags;
1852 char *ptr = &flags->iflag;
1854 fr_mbox_t* mbox = card->mbox;
1856 /* This flag prevents nesting of interrupts. See sdla_isr() routine
1860 ++card->statistics.isr_entry;
1863 /* All peripheral (configuraiton, re-configuration) events
1864 * take presidence over the ISR. Thus, retrigger */
1865 if (test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
1866 ++card->statistics.isr_already_critical;
1870 if(card->hw.type != SDLA_S514) {
1871 if (test_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
1872 printk(KERN_INFO "%s: Critical while in ISR: If Send Running!\n",
1874 ++card->statistics.isr_already_critical;
1879 switch (flags->iflag) {
1881 case FR_INTR_RXRDY: /* receive interrupt */
1882 ++card->statistics.isr_rx;
1887 case FR_INTR_TXRDY: /* transmit interrupt */
1888 ++ card->statistics.isr_tx;
1893 Intr_test_counter++;
1894 ++card->statistics.isr_intr_test;
1897 case FR_INTR_DLC: /* Event interrupt occurred */
1898 mbox->cmd.command = FR_READ_STATUS;
1899 mbox->cmd.length = 0;
1900 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
1902 fr_event(card, err, mbox);
1905 case FR_INTR_TIMER: /* Timer interrupt */
1910 ++card->statistics.isr_spurious;
1912 printk(KERN_INFO "%s: Interrupt Type 0x%02X!\n",
1913 card->devname, flags->iflag);
1915 printk(KERN_INFO "%s: ID Bytes = ",card->devname);
1916 for(i = 0; i < 8; i ++)
1917 printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
1918 printk(KERN_INFO "\n");
1932 /*===========================================================
1933 * rx_intr Receive interrupt handler.
1936 * Upon receiveing an interrupt:
1937 * 1. Check that the firmware is in sync with
1939 * 2. Find an appropriate network interface
1940 * based on the received dlci number.
1941 * 3. Check that the netowrk interface exists
1942 * and that it's setup properly.
1943 * 4. Copy the data into an skb buffer.
1944 * 5. Check the packet type and take
1945 * appropriate acton: UPD, API, ARP or Data.
1948 static void rx_intr (sdla_t* card)
1950 fr_rx_buf_ctl_t* frbuf = card->rxmb;
1951 fr508_flags_t* flags = card->flags;
1953 char *ptr = &flags->iflag;
1954 struct sk_buff* skb;
1955 struct net_device* dev;
1957 unsigned dlci, len, offs, len_incl_hdr;
1961 /* Check that firmware buffers are in sync */
1962 if (frbuf->flag != 0x01) {
1965 "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
1966 card->devname, (unsigned)frbuf, frbuf->flag);
1968 printk(KERN_INFO "%s: ID Bytes = ",card->devname);
1969 for(i = 0; i < 8; i ++)
1970 printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
1971 printk(KERN_INFO "\n");
1973 ++card->statistics.rx_intr_corrupt_rx_bfr;
1975 /* Bug Fix: Mar 6 2000
1976 * If we get a corrupted mailbox, it means that driver
1977 * is out of sync with the firmware. There is no recovery.
1978 * If we don't turn off all interrupts for this card
1979 * the machine will crash.
1981 printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname);
1982 printk(KERN_INFO "Please contact Sangoma Technologies !\n");
1983 fr_set_intr_mode(card, 0, 0, 0);
1987 len = frbuf->length;
1989 offs = frbuf->offset;
1991 /* Find the network interface for this packet */
1992 dev = find_channel(card, dlci);
1995 /* Check that the network interface is active and
1998 if( net_ratelimit()) {
1999 printk(KERN_INFO "%s: received data on unconfigured DLCI %d!\n",
2000 card->devname, dlci);
2002 ++card->statistics.rx_intr_on_orphaned_DLCI;
2003 ++card->wandev.stats.rx_dropped;
2007 if ((chan = dev->priv) == NULL){
2008 if( net_ratelimit()) {
2009 printk(KERN_INFO "%s: received data on unconfigured DLCI %d!\n",
2010 card->devname, dlci);
2012 ++card->statistics.rx_intr_on_orphaned_DLCI;
2013 ++card->wandev.stats.rx_dropped;
2017 skb = dev_alloc_skb(len);
2019 if (!netif_running(dev) || (skb == NULL)){
2021 ++chan->ifstats.rx_dropped;
2024 if (net_ratelimit()) {
2026 "%s: no socket buffers available!\n",
2029 chan->drvstats_rx_intr.rx_intr_no_socket ++;
2032 if (!netif_running(dev)){
2033 chan->drvstats_rx_intr.
2034 rx_intr_dev_not_started ++;
2036 dev_kfree_skb_any(skb);
2042 /* Copy data from the board into the socket buffer */
2043 if ((offs + len) > card->u.f.rx_top + 1) {
2044 unsigned tmp = card->u.f.rx_top - offs + 1;
2046 buf = skb_put(skb, tmp);
2047 sdla_peek(&card->hw, offs, buf, tmp);
2048 offs = card->u.f.rx_base;
2052 buf = skb_put(skb, len);
2053 sdla_peek(&card->hw, offs, buf, len);
2056 /* We got the packet from the bard.
2057 * Check the packet type and take appropriate action */
2059 udp_type = udp_pkt_type( skb, card );
2061 if(udp_type != UDP_INVALID_TYPE) {
2063 /* UDP Debug packet received, store the
2064 * packet and handle it in timer interrupt */
2067 if (wanrouter_type_trans(skb, dev)){
2068 if(store_udp_mgmt_pkt(udp_type,UDP_PKT_FRM_NETWORK,card,skb,dlci)){
2070 flags->imask |= FR_INTR_TIMER;
2072 if (udp_type == UDP_FPIPE_TYPE){
2073 ++chan->drvstats_rx_intr.rx_intr_PIPE_request;
2078 }else if (chan->common.usedby == API) {
2080 /* We are in API mode.
2081 * Add an API header to the RAW packet
2082 * and queue it into a circular buffer.
2083 * Then kick the fr_bh() bottom half handler */
2085 api_rx_hdr_t* api_rx_hdr;
2086 chan->drvstats_rx_intr.rx_intr_bfr_passed_to_stack ++;
2087 chan->ifstats.rx_packets ++;
2088 card->wandev.stats.rx_packets ++;
2090 chan->ifstats.rx_bytes += skb->len;
2091 card->wandev.stats.rx_bytes += skb->len;
2093 skb_push(skb, sizeof(api_rx_hdr_t));
2094 api_rx_hdr = (api_rx_hdr_t*)&skb->data[0x00];
2095 api_rx_hdr->attr = frbuf->attr;
2096 api_rx_hdr->time_stamp = frbuf->tmstamp;
2098 skb->protocol = htons(ETH_P_IP);
2099 skb->mac.raw = skb->data;
2101 skb->pkt_type = WAN_PACKET_DATA;
2103 bh_enqueue(dev, skb);
2105 trigger_fr_bh(chan);
2107 }else if (handle_IPXWAN(skb->data,chan->name,chan->enable_IPX, chan->network_number)){
2109 //FIXME: Frame Relay IPX is not supported, Yet !
2110 //if (chan->enable_IPX) {
2111 // fr_send(card, dlci, 0, skb->len,skb->data);
2113 dev_kfree_skb_any(skb);
2115 } else if (is_arp(skb->data)) {
2117 /* ARP support enabled Mar 16 2000
2118 * Process incoming ARP reply/request, setup
2119 * dynamic routes. */
2121 if (process_ARP((arphdr_1490_t *)skb->data, card, dev)) {
2122 if (net_ratelimit()){
2124 "%s: Error processing ARP Packet.\n",
2128 dev_kfree_skb_any(skb);
2130 } else if (skb->data[0] != 0x03) {
2132 if (net_ratelimit()) {
2133 printk(KERN_INFO "%s: Non IETF packet discarded.\n",
2136 dev_kfree_skb_any(skb);
2140 len_incl_hdr = skb->len;
2141 /* Decapsulate packet and pass it up the
2145 if (chan->common.usedby == BRIDGE || chan->common.usedby == BRIDGE_NODE){
2147 /* Make sure it's an Ethernet frame, otherwise drop it */
2148 if (!memcmp(skb->data, "\x03\x00\x80\x00\x80\xC2\x00\x07", 8)) {
2150 skb->protocol=eth_type_trans(skb,dev);
2152 ++chan->drvstats_rx_intr.rx_intr_bfr_not_passed_to_stack;
2153 ++chan->ifstats.rx_errors;
2154 ++card->wandev.stats.rx_errors;
2159 /* remove hardware header */
2160 buf = skb_pull(skb, 1);
2162 if (!wanrouter_type_trans(skb, dev)) {
2164 /* can't decapsulate packet */
2165 dev_kfree_skb_any(skb);
2167 ++chan->drvstats_rx_intr.rx_intr_bfr_not_passed_to_stack;
2168 ++chan->ifstats.rx_errors;
2169 ++card->wandev.stats.rx_errors;
2172 skb->mac.raw = skb->data;
2176 /* Send a packet up the IP stack */
2177 skb->dev->last_rx = jiffies;
2179 ++chan->drvstats_rx_intr.rx_intr_bfr_passed_to_stack;
2180 ++chan->ifstats.rx_packets;
2181 ++card->wandev.stats.rx_packets;
2183 chan->ifstats.rx_bytes += len_incl_hdr;
2184 card->wandev.stats.rx_bytes += len_incl_hdr;
2189 /* Release buffer element and calculate a pointer to the next one */
2191 card->rxmb = ++frbuf;
2192 if ((void*)frbuf > card->u.f.rxmb_last)
2193 card->rxmb = card->u.f.rxmb_base;
2197 /*==================================================================
2198 * tx_intr: Transmit interrupt handler.
2201 * If the board is busy transmitting, if_send() will
2202 * buffers a single packet and turn on
2203 * the tx interrupt. Tx interrupt will be called
2204 * by the board, once the firmware can send more
2205 * data. Thus, no polling is required.
2208 * Tx interrupt is called for each
2209 * configured dlci channel. Thus:
2210 * 1. Obtain the netowrk interface based on the
2212 * 2. Check that network interface is up and
2214 * 3. Check for a buffered packet.
2215 * 4. Transmit the packet.
2216 * 5. If we are in WANPIPE mode, mark the
2218 * 6. If we are in API mode, kick
2219 * the AF_WANPIPE socket for more data.
2222 static void tx_intr(sdla_t *card)
2224 fr508_flags_t* flags = card->flags;
2225 fr_tx_buf_ctl_t* bctl;
2226 struct net_device* dev;
2229 if(card->hw.type == SDLA_S514){
2230 bctl = (void*)(flags->tse_offs + card->hw.dpmbase);
2232 bctl = (void*)(flags->tse_offs - FR_MB_VECTOR +
2236 /* Find the structure and make it unbusy */
2237 dev = find_channel(card, flags->dlci);
2239 printk(KERN_INFO "NO DEV IN TX Interrupt\n");
2240 goto end_of_tx_intr;
2243 if ((chan = dev->priv) == NULL){
2244 printk(KERN_INFO "NO CHAN IN TX Interrupt\n");
2245 goto end_of_tx_intr;
2248 if(!chan->transmit_length || !chan->delay_skb) {
2249 printk(KERN_INFO "%s: tx int error - transmit length zero\n",
2251 goto end_of_tx_intr;
2254 /* If the 'if_send()' procedure is currently checking the 'tbusy'
2255 status, then we cannot transmit. Instead, we configure the microcode
2256 so as to re-issue this transmit interrupt at a later stage.
2258 if (test_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical)) {
2260 fr_dlci_interface_t* dlci_interface = chan->dlci_int_interface;
2262 dlci_interface->gen_interrupt |= FR_INTR_TXRDY;
2266 bctl->dlci = flags->dlci;
2267 bctl->length = chan->transmit_length+chan->fr_header_len;
2268 sdla_poke(&card->hw,
2269 fr_send_hdr(card,bctl->dlci,bctl->offset),
2270 chan->delay_skb->data,
2271 chan->delay_skb->len);
2274 ++chan->ifstats.tx_packets;
2275 ++card->wandev.stats.tx_packets;
2276 chan->ifstats.tx_bytes += chan->transmit_length;
2277 card->wandev.stats.tx_bytes += chan->transmit_length;
2279 /* We must free an sk buffer, which we used
2280 * for delayed transmission; Otherwise, the sock
2281 * will run out of memory */
2282 dev_kfree_skb_any(chan->delay_skb);
2284 chan->delay_skb = NULL;
2285 chan->transmit_length = 0;
2287 dev->trans_start = jiffies;
2289 if (netif_queue_stopped(dev)){
2290 /* If using API, than wakeup socket BH handler */
2291 if (chan->common.usedby == API){
2292 netif_start_queue(dev);
2295 netif_wake_queue(dev);
2302 /* if any other interfaces have transmit interrupts pending,
2303 * do not disable the global transmit interrupt */
2304 if(!(-- card->u.f.tx_interrupts_pending))
2305 flags->imask &= ~FR_INTR_TXRDY;
2311 /*============================================================================
2312 * timer_intr: Timer interrupt handler.
2315 * All commans must be executed within the timer
2316 * interrupt since no two commands should execute
2320 * The timer interrupt is used to:
2321 * 1. Processing udp calls from 'fpipemon'.
2322 * 2. Processing update calls from /proc file system
2323 * 3. Reading board-level statistics for
2324 * updating the proc file system.
2325 * 4. Sending inverse ARP request packets.
2326 * 5. Configure a dlci/channel.
2327 * 6. Unconfigure a dlci/channel. (Node only)
2330 static void timer_intr(sdla_t *card)
2332 fr508_flags_t* flags = card->flags;
2334 /* UDP Debuging: fpipemon call */
2335 if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UDP) {
2336 if(card->u.f.udp_type == UDP_FPIPE_TYPE) {
2337 if(process_udp_mgmt_pkt(card)) {
2338 card->u.f.timer_int_enabled &=
2339 ~TMR_INT_ENABLED_UDP;
2344 /* /proc update call : triggered from update() */
2345 if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UPDATE) {
2346 fr_get_err_stats(card);
2348 card->u.f.update_comms_stats = 0;
2349 card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE;
2352 /* Update the channel state call. This is call is
2353 * triggered by if_send() function */
2354 if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UPDATE_STATE){
2355 struct net_device *dev;
2356 if (card->wandev.state == WAN_CONNECTED){
2357 for (dev = card->wandev.dev; dev;
2358 dev = *((struct net_device **)dev->priv)){
2359 fr_channel_t *chan = dev->priv;
2360 if (chan->common.state != WAN_CONNECTED){
2361 update_chan_state(dev);
2365 card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE_STATE;
2368 /* configure a dlci/channel */
2369 if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_CONFIG){
2371 card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_CONFIG;
2374 /* unconfigure a dlci/channel */
2375 if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UNCONFIG){
2377 card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UNCONFIG;
2381 /* Transmit ARP packets */
2382 if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_ARP){
2384 struct net_device *dev;
2386 if (card->u.f.arp_dev == NULL)
2387 card->u.f.arp_dev = card->wandev.dev;
2389 dev = card->u.f.arp_dev;
2393 fr_channel_t *chan = dev->priv;
2395 /* If the interface is brought down cancel sending In-ARPs */
2396 if (!(dev->flags&IFF_UP)){
2397 clear_bit(0,&chan->inarp_ready);
2400 if (test_bit(0,&chan->inarp_ready)){
2402 if (check_tx_status(card,dev)){
2403 set_bit(ARP_CRIT,&card->wandev.critical);
2407 if (!send_inarp_request(card,dev)){
2408 trigger_fr_arp(dev);
2409 chan->inarp_tick = jiffies;
2412 clear_bit(0,&chan->inarp_ready);
2413 dev = move_dev_to_next(card,dev);
2416 dev = move_dev_to_next(card,dev);
2418 if (++i == card->wandev.new_if_cnt){
2419 card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_ARP;
2423 card->u.f.arp_dev = dev;
2426 if(!card->u.f.timer_int_enabled)
2427 flags->imask &= ~FR_INTR_TIMER;
2431 /*============================================================================
2432 * spur_intr: Spurious interrupt handler.
2435 * We don't know this interrupt.
2439 static void spur_intr (sdla_t* card)
2441 if (net_ratelimit()){
2442 printk(KERN_INFO "%s: spurious interrupt!\n", card->devname);
2447 //FIXME: Fix the IPX in next version
2448 /*===========================================================================
2449 * Return 0 for non-IPXWAN packet
2450 * 1 for IPXWAN packet or IPX is not enabled!
2451 * FIXME: Use a IPX structure here not offsets
2453 static int handle_IPXWAN(unsigned char *sendpacket,
2454 char *devname, unsigned char enable_IPX,
2455 unsigned long network_number)
2459 if( sendpacket[1] == 0x00 && sendpacket[2] == 0x80 &&
2460 sendpacket[6] == 0x81 && sendpacket[7] == 0x37) {
2462 /* It's an IPX packet */
2464 /* Return 1 so we don't pass it up the stack. */
2465 //FIXME: Take this out when IPX is fixed
2466 if (net_ratelimit()){
2468 "%s: WARNING: Unsupported IPX packet received and dropped\n",
2474 /* It's not IPX so return and pass it up the stack. */
2478 if( sendpacket[24] == 0x90 && sendpacket[25] == 0x04){
2481 if( sendpacket[10] == 0x02 && sendpacket[42] == 0x00){
2483 /* It's a timer request packet */
2484 printk(KERN_INFO "%s: Received IPXWAN Timer Request packet\n",
2487 /* Go through the routing options and answer no to every
2488 * option except Unnumbered RIP/SAP
2490 for(i = 49; sendpacket[i] == 0x00; i += 5){
2491 /* 0x02 is the option for Unnumbered RIP/SAP */
2492 if( sendpacket[i + 4] != 0x02){
2493 sendpacket[i + 1] = 0;
2497 /* Skip over the extended Node ID option */
2498 if( sendpacket[i] == 0x04 ){
2502 /* We also want to turn off all header compression opt.
2504 for(; sendpacket[i] == 0x80 ;){
2505 sendpacket[i + 1] = 0;
2506 i += (sendpacket[i + 2] << 8) + (sendpacket[i + 3]) + 4;
2509 /* Set the packet type to timer response */
2510 sendpacket[42] = 0x01;
2512 printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n",
2515 } else if( sendpacket[42] == 0x02 ){
2517 /* This is an information request packet */
2519 "%s: Received IPXWAN Information Request packet\n",
2522 /* Set the packet type to information response */
2523 sendpacket[42] = 0x03;
2525 /* Set the router name */
2526 sendpacket[59] = 'F';
2527 sendpacket[60] = 'P';
2528 sendpacket[61] = 'I';
2529 sendpacket[62] = 'P';
2530 sendpacket[63] = 'E';
2531 sendpacket[64] = '-';
2532 sendpacket[65] = CVHexToAscii(network_number >> 28);
2533 sendpacket[66] = CVHexToAscii((network_number & 0x0F000000)>> 24);
2534 sendpacket[67] = CVHexToAscii((network_number & 0x00F00000)>> 20);
2535 sendpacket[68] = CVHexToAscii((network_number & 0x000F0000)>> 16);
2536 sendpacket[69] = CVHexToAscii((network_number & 0x0000F000)>> 12);
2537 sendpacket[70] = CVHexToAscii((network_number & 0x00000F00)>> 8);
2538 sendpacket[71] = CVHexToAscii((network_number & 0x000000F0)>> 4);
2539 sendpacket[72] = CVHexToAscii(network_number & 0x0000000F);
2540 for(i = 73; i < 107; i+= 1)
2545 printk(KERN_INFO "%s: Sending IPXWAN Information Response packet\n",
2549 printk(KERN_INFO "%s: Unknown IPXWAN packet!\n",devname);
2553 /* Set the WNodeID to our network address */
2554 sendpacket[43] = (unsigned char)(network_number >> 24);
2555 sendpacket[44] = (unsigned char)((network_number & 0x00FF0000) >> 16);
2556 sendpacket[45] = (unsigned char)((network_number & 0x0000FF00) >> 8);
2557 sendpacket[46] = (unsigned char)(network_number & 0x000000FF);
2562 /* If we get here, it's an IPX-data packet so it'll get passed up the
2564 * switch the network numbers
2566 switch_net_numbers(sendpacket, network_number ,1);
2569 /*============================================================================
2573 * If the interface goes down, or we receive an ARP request,
2574 * we have to change the network interface ip addresses.
2575 * This cannot be done within the interrupt.
2579 * This routine is called as a polling routine to dynamically
2580 * add/delete routes negotiated by inverse ARP. It is in this
2581 * "task" because we don't want routes to be added while in
2582 * interrupt context.
2585 * This function is called by fr_poll() polling funtion.
2588 static void process_route(struct net_device *dev)
2590 fr_channel_t *chan = dev->priv;
2591 sdla_t *card = chan->card;
2593 struct ifreq if_info;
2594 struct sockaddr_in *if_data;
2595 mm_segment_t fs = get_fs();
2600 switch(chan->route_flag){
2604 /* Set remote addresses */
2605 memset(&if_info, 0, sizeof(if_info));
2606 strcpy(if_info.ifr_name, dev->name);
2608 set_fs(get_ds()); /* get user space block */
2610 if_data = (struct sockaddr_in *)&if_info.ifr_dstaddr;
2611 if_data->sin_addr.s_addr = chan->ip_remote;
2612 if_data->sin_family = AF_INET;
2613 err = devinet_ioctl( SIOCSIFDSTADDR, &if_info );
2615 set_fs(fs); /* restore old block */
2619 "%s: Route Add failed. Error: %d\n",
2621 printk(KERN_INFO "%s: Address: %u.%u.%u.%u\n",
2622 chan->name, NIPQUAD(chan->ip_remote));
2625 printk(KERN_INFO "%s: Route Added Successfully: %u.%u.%u.%u\n",
2626 card->devname,NIPQUAD(chan->ip_remote));
2627 chan->route_flag = ROUTE_ADDED;
2633 /* Set remote addresses */
2634 memset(&if_info, 0, sizeof(if_info));
2635 strcpy(if_info.ifr_name, dev->name);
2637 ip_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP);
2639 set_fs(get_ds()); /* get user space block */
2641 if_data = (struct sockaddr_in *)&if_info.ifr_dstaddr;
2642 if_data->sin_addr.s_addr = 0;
2643 if_data->sin_family = AF_INET;
2644 err = devinet_ioctl( SIOCSIFDSTADDR, &if_info );
2650 "%s: Deleting of route failed. Error: %d\n",
2652 printk(KERN_INFO "%s: Address: %u.%u.%u.%u\n",
2653 dev->name,NIPQUAD(chan->ip_remote) );
2656 printk(KERN_INFO "%s: Route Removed Sucessfuly: %u.%u.%u.%u\n",
2657 card->devname,NIPQUAD(ip_tmp));
2658 chan->route_flag = NO_ROUTE;
2662 } /* Case Statement */
2668 /****** Frame Relay Firmware-Specific Functions *****************************/
2670 /*============================================================================
2671 * Read firmware code version.
2672 * o fill string str with firmware version info.
2674 static int fr_read_version (sdla_t* card, char* str)
2676 fr_mbox_t* mbox = card->mbox;
2677 int retry = MAX_CMD_RETRY;
2682 mbox->cmd.command = FR_READ_CODE_VERSION;
2683 mbox->cmd.length = 0;
2684 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2685 } while (err && retry-- && fr_event(card, err, mbox));
2688 int len = mbox->cmd.length;
2689 memcpy(str, mbox->data, len);
2695 /*============================================================================
2696 * Set global configuration.
2698 static int fr_configure (sdla_t* card, fr_conf_t *conf)
2700 fr_mbox_t* mbox = card->mbox;
2701 int retry = MAX_CMD_RETRY;
2702 int dlci_num = card->u.f.dlci_num;
2707 memcpy(mbox->data, conf, sizeof(fr_conf_t));
2709 if (dlci_num) for (i = 0; i < dlci_num; ++i)
2710 ((fr_conf_t*)mbox->data)->dlci[i] =
2711 card->u.f.node_dlci[i];
2713 mbox->cmd.command = FR_SET_CONFIG;
2715 sizeof(fr_conf_t) + dlci_num * sizeof(short);
2717 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2719 } while (err && retry-- && fr_event(card, err, mbox));
2723 printk(KERN_ERR "%s: Frame Relay Configuration Failed: rc=0x%x\n",
2730 /*============================================================================
2731 * Set DLCI configuration.
2733 static int fr_dlci_configure (sdla_t* card, fr_dlc_conf_t *conf, unsigned dlci)
2735 fr_mbox_t* mbox = card->mbox;
2736 int retry = MAX_CMD_RETRY;
2741 memcpy(mbox->data, conf, sizeof(fr_dlc_conf_t));
2742 mbox->cmd.dlci = (unsigned short) dlci;
2743 mbox->cmd.command = FR_SET_CONFIG;
2744 mbox->cmd.length = sizeof(fr_dlc_conf_t);
2745 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2746 } while (err && retry--);
2750 /*============================================================================
2751 * Set interrupt mode.
2753 static int fr_set_intr_mode (sdla_t* card, unsigned mode, unsigned mtu,
2754 unsigned short timeout)
2756 fr_mbox_t* mbox = card->mbox;
2757 fr508_intr_ctl_t* ictl = (void*)mbox->data;
2758 int retry = MAX_CMD_RETRY;
2763 memset(ictl, 0, sizeof(fr508_intr_ctl_t));
2766 ictl->irq = card->hw.irq;
2768 /* indicate timeout on timer */
2769 if (mode & 0x20) ictl->timeout = timeout;
2771 mbox->cmd.length = sizeof(fr508_intr_ctl_t);
2772 mbox->cmd.command = FR_SET_INTR_MODE;
2773 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2775 } while (err && retry-- && fr_event(card, err, mbox));
2780 /*============================================================================
2781 * Enable communications.
2783 static int fr_comm_enable (sdla_t* card)
2785 fr_mbox_t* mbox = card->mbox;
2786 int retry = MAX_CMD_RETRY;
2791 mbox->cmd.command = FR_COMM_ENABLE;
2792 mbox->cmd.length = 0;
2793 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2794 } while (err && retry-- && fr_event(card, err, mbox));
2799 /*============================================================================
2802 * Warning: This functin is called by the shutdown() procedure. It is void
2803 * since dev->priv are has already been deallocated and no
2804 * error checking is possible using fr_event() function.
2806 static void fr_comm_disable (sdla_t* card)
2808 fr_mbox_t* mbox = card->mbox;
2809 int retry = MAX_CMD_RETRY;
2813 mbox->cmd.command = FR_SET_MODEM_STATUS;
2814 mbox->cmd.length = 1;
2816 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2817 } while (err && retry--);
2819 retry = MAX_CMD_RETRY;
2823 mbox->cmd.command = FR_COMM_DISABLE;
2824 mbox->cmd.length = 0;
2825 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2826 } while (err && retry--);
2833 /*============================================================================
2834 * Get communications error statistics.
2836 static int fr_get_err_stats (sdla_t* card)
2838 fr_mbox_t* mbox = card->mbox;
2839 int retry = MAX_CMD_RETRY;
2845 mbox->cmd.command = FR_READ_ERROR_STATS;
2846 mbox->cmd.length = 0;
2848 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2849 } while (err && retry-- && fr_event(card, err, mbox));
2852 fr_comm_stat_t* stats = (void*)mbox->data;
2853 card->wandev.stats.rx_over_errors = stats->rx_overruns;
2854 card->wandev.stats.rx_crc_errors = stats->rx_bad_crc;
2855 card->wandev.stats.rx_missed_errors = stats->rx_aborts;
2856 card->wandev.stats.rx_length_errors = stats->rx_too_long;
2857 card->wandev.stats.tx_aborted_errors = stats->tx_aborts;
2864 /*============================================================================
2867 static int fr_get_stats (sdla_t* card)
2869 fr_mbox_t* mbox = card->mbox;
2870 int retry = MAX_CMD_RETRY;
2876 mbox->cmd.command = FR_READ_STATISTICS;
2877 mbox->cmd.length = 0;
2879 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2880 } while (err && retry-- && fr_event(card, err, mbox));
2883 fr_link_stat_t* stats = (void*)mbox->data;
2884 card->wandev.stats.rx_frame_errors = stats->rx_bad_format;
2885 card->wandev.stats.rx_dropped =
2886 stats->rx_dropped + stats->rx_dropped2;
2892 /*============================================================================
2893 * Add DLCI(s) (Access Node only!).
2894 * This routine will perform the ADD_DLCIs command for the specified DLCI.
2896 static int fr_add_dlci (sdla_t* card, int dlci)
2898 fr_mbox_t* mbox = card->mbox;
2899 int retry = MAX_CMD_RETRY;
2904 unsigned short* dlci_list = (void*)mbox->data;
2906 mbox->cmd.length = sizeof(short);
2907 dlci_list[0] = dlci;
2908 mbox->cmd.command = FR_ADD_DLCI;
2909 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2911 } while (err && retry-- && fr_event(card, err, mbox));
2916 /*============================================================================
2917 * Activate DLCI(s) (Access Node only!).
2918 * This routine will perform the ACTIVATE_DLCIs command with a DLCI number.
2920 static int fr_activate_dlci (sdla_t* card, int dlci)
2922 fr_mbox_t* mbox = card->mbox;
2923 int retry = MAX_CMD_RETRY;
2928 unsigned short* dlci_list = (void*)mbox->data;
2930 mbox->cmd.length = sizeof(short);
2931 dlci_list[0] = dlci;
2932 mbox->cmd.command = FR_ACTIVATE_DLCI;
2933 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2935 } while (err && retry-- && fr_event(card, err, mbox));
2940 /*============================================================================
2941 * Delete DLCI(s) (Access Node only!).
2942 * This routine will perform the DELETE_DLCIs command with a DLCI number.
2944 static int fr_delete_dlci (sdla_t* card, int dlci)
2946 fr_mbox_t* mbox = card->mbox;
2947 int retry = MAX_CMD_RETRY;
2952 unsigned short* dlci_list = (void*)mbox->data;
2954 mbox->cmd.length = sizeof(short);
2955 dlci_list[0] = dlci;
2956 mbox->cmd.command = FR_DELETE_DLCI;
2957 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2959 } while (err && retry-- && fr_event(card, err, mbox));
2966 /*============================================================================
2967 * Issue in-channel signalling frame.
2969 static int fr_issue_isf (sdla_t* card, int isf)
2971 fr_mbox_t* mbox = card->mbox;
2972 int retry = MAX_CMD_RETRY;
2977 mbox->data[0] = isf;
2978 mbox->cmd.length = 1;
2979 mbox->cmd.command = FR_ISSUE_IS_FRAME;
2980 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
2981 } while (err && retry-- && fr_event(card, err, mbox));
2987 static unsigned int fr_send_hdr (sdla_t*card, int dlci, unsigned int offset)
2989 struct net_device *dev = find_channel(card,dlci);
2992 if (!dev || !(chan=dev->priv))
2995 if (chan->fr_header_len){
2996 sdla_poke(&card->hw, offset, chan->fr_header, chan->fr_header_len);
2999 return offset+chan->fr_header_len;
3002 /*============================================================================
3003 * Send a frame on a selected DLCI.
3005 static int fr_send_data_header (sdla_t* card, int dlci, unsigned char attr, int len,
3006 void *buf, unsigned char hdr_len)
3008 fr_mbox_t* mbox = card->mbox + 0x800;
3009 int retry = MAX_CMD_RETRY;
3014 mbox->cmd.dlci = dlci;
3015 mbox->cmd.attr = attr;
3016 mbox->cmd.length = len+hdr_len;
3017 mbox->cmd.command = FR_WRITE;
3018 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
3019 } while (err && retry-- && fr_event(card, err, mbox));
3022 fr_tx_buf_ctl_t* frbuf;
3024 if(card->hw.type == SDLA_S514)
3025 frbuf = (void*)(*(unsigned long*)mbox->data +
3028 frbuf = (void*)(*(unsigned long*)mbox->data -
3029 FR_MB_VECTOR + card->hw.dpmbase);
3031 sdla_poke(&card->hw, fr_send_hdr(card,dlci,frbuf->offset), buf, len);
3038 static int fr_send (sdla_t* card, int dlci, unsigned char attr, int len,
3041 fr_mbox_t* mbox = card->mbox + 0x800;
3042 int retry = MAX_CMD_RETRY;
3047 mbox->cmd.dlci = dlci;
3048 mbox->cmd.attr = attr;
3049 mbox->cmd.length = len;
3050 mbox->cmd.command = FR_WRITE;
3051 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
3052 } while (err && retry-- && fr_event(card, err, mbox));
3055 fr_tx_buf_ctl_t* frbuf;
3057 if(card->hw.type == SDLA_S514)
3058 frbuf = (void*)(*(unsigned long*)mbox->data +
3061 frbuf = (void*)(*(unsigned long*)mbox->data -
3062 FR_MB_VECTOR + card->hw.dpmbase);
3064 sdla_poke(&card->hw, frbuf->offset, buf, len);
3072 /****** Firmware Asynchronous Event Handlers ********************************/
3074 /*============================================================================
3075 * Main asyncronous event/error handler.
3076 * This routine is called whenever firmware command returns non-zero
3079 * Return zero if previous command has to be cancelled.
3081 static int fr_event (sdla_t *card, int event, fr_mbox_t* mbox)
3083 fr508_flags_t* flags = card->flags;
3084 char *ptr = &flags->iflag;
3089 case FRRES_MODEM_FAILURE:
3090 return fr_modem_failure(card, mbox);
3092 case FRRES_CHANNEL_DOWN: {
3093 struct net_device *dev;
3095 /* Remove all routes from associated DLCI's */
3096 for (dev = card->wandev.dev; dev;
3097 dev = *((struct net_device **)dev->priv)) {
3098 fr_channel_t *chan = dev->priv;
3099 if (chan->route_flag == ROUTE_ADDED) {
3100 chan->route_flag = REMOVE_ROUTE;
3103 if (chan->inarp == INARP_CONFIGURED) {
3104 chan->inarp = INARP_REQUEST;
3107 /* If the link becomes disconnected then,
3108 * all channels will be disconnected
3111 set_chan_state(dev,WAN_DISCONNECTED);
3114 wanpipe_set_state(card, WAN_DISCONNECTED);
3118 case FRRES_CHANNEL_UP: {
3119 struct net_device *dev;
3121 /* FIXME: Only startup devices that are on the list */
3123 for (dev = card->wandev.dev; dev;
3124 dev = *((struct net_device **)dev->priv)) {
3126 set_chan_state(dev,WAN_CONNECTED);
3129 wanpipe_set_state(card, WAN_CONNECTED);
3133 case FRRES_DLCI_CHANGE:
3134 return fr_dlci_change(card, mbox);
3136 case FRRES_DLCI_MISMATCH:
3137 printk(KERN_INFO "%s: DLCI list mismatch!\n",
3142 printk(KERN_ERR "%s: command 0x%02X timed out!\n",
3143 card->devname, mbox->cmd.command);
3144 printk(KERN_INFO "%s: ID Bytes = ",card->devname);
3145 for(i = 0; i < 8; i ++)
3146 printk(KERN_INFO "0x%02X ", *(ptr + 0x18 + i));
3147 printk(KERN_INFO "\n");
3151 case FRRES_DLCI_INACTIVE:
3154 case FRRES_CIR_OVERFLOW:
3157 case FRRES_BUFFER_OVERFLOW:
3161 printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n"
3162 , card->devname, mbox->cmd.command, event);
3168 /*============================================================================
3169 * Handle modem error.
3171 * Return zero if previous command has to be cancelled.
3173 static int fr_modem_failure (sdla_t *card, fr_mbox_t* mbox)
3175 printk(KERN_INFO "%s: physical link down! (modem error 0x%02X)\n",
3176 card->devname, mbox->data[0]);
3178 switch (mbox->cmd.command){
3188 /*============================================================================
3189 * Handle DLCI status change.
3191 * Return zero if previous command has to be cancelled.
3193 static int fr_dlci_change (sdla_t *card, fr_mbox_t* mbox)
3195 dlci_status_t* status = (void*)mbox->data;
3196 int cnt = mbox->cmd.length / sizeof(dlci_status_t);
3198 struct net_device* dev2;
3201 for (; cnt; --cnt, ++status) {
3203 unsigned short dlci= status->dlci;
3204 struct net_device* dev = find_channel(card, dlci);
3208 "%s: CPE contains unconfigured DLCI= %d\n",
3209 card->devname, dlci);
3212 "%s: unconfigured DLCI %d reported by network\n"
3213 , card->devname, dlci);
3216 if (status->state == FR_LINK_INOPER) {
3218 "%s: DLCI %u is inactive!\n",
3219 card->devname, dlci);
3221 if (dev && netif_running(dev))
3222 set_chan_state(dev, WAN_DISCONNECTED);
3225 if (status->state & FR_DLCI_DELETED) {
3228 "%s: DLCI %u has been deleted!\n",
3229 card->devname, dlci);
3231 if (dev && netif_running(dev)){
3233 fr_channel_t *chan = dev->priv;
3235 if (chan->route_flag == ROUTE_ADDED) {
3236 chan->route_flag = REMOVE_ROUTE;
3237 /* The state change will trigger
3238 * the fr polling routine */
3241 if (chan->inarp == INARP_CONFIGURED) {
3242 chan->inarp = INARP_REQUEST;
3245 set_chan_state(dev, WAN_DISCONNECTED);
3248 } else if (status->state & FR_DLCI_ACTIVE) {
3252 /* This flag is used for configuring specific
3253 DLCI(s) when they become active.
3255 chan->dlci_configured = DLCI_CONFIG_PENDING;
3257 set_chan_state(dev, WAN_CONNECTED);
3263 for (dev2 = card->wandev.dev; dev2;
3264 dev2 = *((struct net_device **)dev2->priv)){
3268 if (chan->dlci_configured == DLCI_CONFIG_PENDING) {
3269 if (fr_init_dlci(card, chan)){
3279 static int fr_init_dlci (sdla_t *card, fr_channel_t *chan)
3283 memset(&cfg, 0, sizeof(cfg));
3285 if ( chan->cir_status == CIR_DISABLED) {
3287 cfg.cir_fwd = cfg.cir_bwd = 16;
3288 cfg.bc_fwd = cfg.bc_bwd = 16;
3289 cfg.conf_flags = 0x0001;
3291 }else if (chan->cir_status == CIR_ENABLED) {
3293 cfg.cir_fwd = cfg.cir_bwd = chan->cir;
3294 cfg.bc_fwd = cfg.bc_bwd = chan->bc;
3295 cfg.be_fwd = cfg.be_bwd = chan->be;
3296 cfg.conf_flags = 0x0000;
3299 if (fr_dlci_configure( card, &cfg , chan->dlci)){
3301 "%s: DLCI Configure failed for %d\n",
3302 card->devname, chan->dlci);
3306 chan->dlci_configured = DLCI_CONFIGURED;
3308 /* Read the interface byte mapping into the channel
3311 read_DLCI_IB_mapping( card, chan );
3315 /******* Miscellaneous ******************************************************/
3317 /*============================================================================
3318 * Update channel state.
3320 static int update_chan_state(struct net_device* dev)
3322 fr_channel_t* chan = dev->priv;
3323 sdla_t* card = chan->card;
3324 fr_mbox_t* mbox = card->mbox;
3325 int retry = MAX_CMD_RETRY;
3330 mbox->cmd.command = FR_LIST_ACTIVE_DLCI;
3331 mbox->cmd.length = 0;
3332 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
3333 } while (err && retry-- && fr_event(card, err, mbox));
3337 unsigned short* list = (void*)mbox->data;
3338 int cnt = mbox->cmd.length / sizeof(short);
3342 for (; cnt; --cnt, ++list) {
3344 if (*list == chan->dlci) {
3345 set_chan_state(dev, WAN_CONNECTED);
3349 * When a dlci is added or restarted,
3350 * the dlci_int_interface pointer must
3351 * be reinitialized. */
3352 if (!chan->dlci_int_interface){
3353 err=fr_init_dlci (card,chan);
3363 /*============================================================================
3364 * Set channel state.
3366 static void set_chan_state(struct net_device* dev, int state)
3368 fr_channel_t* chan = dev->priv;
3369 sdla_t* card = chan->card;
3371 if (chan->common.state != state) {
3377 "%s: Interface %s: DLCI %d connected\n",
3378 card->devname, dev->name, chan->dlci);
3380 /* If the interface was previoulsy down,
3381 * bring it up, since the channel is active */
3383 trigger_fr_poll (dev);
3384 trigger_fr_arp (dev);
3387 case WAN_CONNECTING:
3389 "%s: Interface %s: DLCI %d connecting\n",
3390 card->devname, dev->name, chan->dlci);
3393 case WAN_DISCONNECTED:
3395 "%s: Interface %s: DLCI %d disconnected!\n",
3396 card->devname, dev->name, chan->dlci);
3398 /* If the interface is up, bring it down,
3399 * since the channel is now disconnected */
3400 trigger_fr_poll (dev);
3404 chan->common.state = state;
3407 chan->state_tick = jiffies;
3410 /*============================================================================
3411 * Find network device by its channel number.
3413 * We need this critical flag because we change
3414 * the dlci_to_dev_map outside the interrupt.
3416 * NOTE: del_if() functions updates this array, it uses
3417 * the spin locks to avoid corruption.
3419 static struct net_device* find_channel(sdla_t* card, unsigned dlci)
3421 if(dlci > HIGHEST_VALID_DLCI)
3424 return(card->u.f.dlci_to_dev_map[dlci]);
3427 /*============================================================================
3428 * Check to see if a frame can be sent. If no transmit buffers available,
3429 * enable transmit interrupts.
3431 * Return: 1 - Tx buffer(s) available
3432 * 0 - no buffers available
3434 static int is_tx_ready (sdla_t* card, fr_channel_t* chan)
3438 if(card->hw.type == SDLA_S514)
3441 sb = inb(card->hw.port);
3448 /*============================================================================
3449 * Convert decimal string to unsigned integer.
3450 * If len != 0 then only 'len' characters of the string are converted.
3452 static unsigned int dec_to_uint (unsigned char* str, int len)
3459 for (val = 0; len && is_digit(*str); ++str, --len)
3460 val = (val * 10) + (*str - (unsigned)'0');
3467 /*=============================================================================
3468 * Store a UDP management packet for later processing.
3471 static int store_udp_mgmt_pkt(int udp_type, char udp_pkt_src, sdla_t* card,
3472 struct sk_buff *skb, int dlci)
3474 int udp_pkt_stored = 0;
3476 struct net_device *dev = find_channel(card, dlci);
3479 if (!dev || !(chan=dev->priv))
3482 if(!card->u.f.udp_pkt_lgth && (skb->len <= MAX_LGTH_UDP_MGNT_PKT)){
3483 card->u.f.udp_pkt_lgth = skb->len + chan->fr_header_len;
3484 card->u.f.udp_type = udp_type;
3485 card->u.f.udp_pkt_src = udp_pkt_src;
3486 card->u.f.udp_dlci = dlci;
3487 memcpy(card->u.f.udp_pkt_data, skb->data, skb->len);
3488 card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UDP;
3492 printk(KERN_INFO "ERROR: UDP packet not stored for DLCI %d\n",
3496 if(udp_pkt_src == UDP_PKT_FRM_STACK){
3497 dev_kfree_skb_any(skb);
3499 dev_kfree_skb_any(skb);
3502 return(udp_pkt_stored);
3506 /*==============================================================================
3507 * Process UDP call of type FPIPE8ND
3509 static int process_udp_mgmt_pkt(sdla_t* card)
3512 int c_retry = MAX_CMD_RETRY;
3514 unsigned char frames;
3516 unsigned short buffer_length;
3517 struct sk_buff *new_skb;
3518 fr_mbox_t* mbox = card->mbox;
3521 int udp_mgmt_req_valid = 1;
3522 struct net_device* dev;
3524 fr_udp_pkt_t *fr_udp_pkt;
3525 unsigned short num_trc_els;
3526 fr_trc_el_t* ptr_trc_el;
3528 fpipemon_trc_t* fpipemon_trc;
3530 char udp_pkt_src = card->u.f.udp_pkt_src;
3531 int dlci = card->u.f.udp_dlci;
3533 /* Find network interface for this packet */
3534 dev = find_channel(card, dlci);
3536 card->u.f.udp_pkt_lgth = 0;
3539 if ((chan = dev->priv) == NULL){
3540 card->u.f.udp_pkt_lgth = 0;
3544 /* If the UDP packet is from the network, we are going to have to
3545 transmit a response. Before doing so, we must check to see that
3546 we are not currently transmitting a frame (in 'if_send()') and
3547 that we are not already in a 'delayed transmit' state.
3549 if(udp_pkt_src == UDP_PKT_FRM_NETWORK) {
3550 if (check_tx_status(card,dev)){
3551 card->u.f.udp_pkt_lgth = 0;
3556 fr_udp_pkt = (fr_udp_pkt_t *)card->u.f.udp_pkt_data;
3558 if(udp_pkt_src == UDP_PKT_FRM_NETWORK) {
3560 switch(fr_udp_pkt->cblock.command) {
3562 case FR_READ_MODEM_STATUS:
3563 case FR_READ_STATUS:
3564 case FPIPE_ROUTER_UP_TIME:
3565 case FR_READ_ERROR_STATS:
3566 case FPIPE_DRIVER_STAT_GEN:
3567 case FR_READ_STATISTICS:
3568 case FR_READ_ADD_DLC_STATS:
3569 case FR_READ_CONFIG:
3570 case FR_READ_CODE_VERSION:
3571 udp_mgmt_req_valid = 1;
3574 udp_mgmt_req_valid = 0;
3579 if(!udp_mgmt_req_valid) {
3580 /* set length to 0 */
3581 fr_udp_pkt->cblock.length = 0;
3582 /* set return code */
3583 fr_udp_pkt->cblock.result = 0xCD;
3585 chan->drvstats_gen.UDP_PIPE_mgmt_direction_err ++;
3587 if (net_ratelimit()){
3589 "%s: Warning, Illegal UDP command attempted from network: %x\n",
3590 card->devname,fr_udp_pkt->cblock.command);
3595 switch(fr_udp_pkt->cblock.command) {
3597 case FPIPE_ENABLE_TRACING:
3598 if(!card->TracingEnabled) {
3600 mbox->cmd.command = FR_SET_TRACE_CONFIG;
3601 mbox->cmd.length = 1;
3602 mbox->cmd.dlci = 0x00;
3603 mbox->data[0] = fr_udp_pkt->data[0] |
3605 err = sdla_exec(mbox) ?
3606 mbox->cmd.result : CMD_TIMEOUT;
3607 } while (err && c_retry-- && fr_event(card, err,
3611 card->TracingEnabled = 0;
3612 /* set the return code */
3613 fr_udp_pkt->cblock.result =
3615 mbox->cmd.length = 0;
3619 sdla_peek(&card->hw, NO_TRC_ELEMENTS_OFF,
3621 sdla_peek(&card->hw, BASE_TRC_ELEMENTS_OFF,
3622 &card->u.f.trc_el_base, 4);
3623 card->u.f.curr_trc_el = card->u.f.trc_el_base;
3624 card->u.f.trc_el_last = card->u.f.curr_trc_el +
3625 ((num_trc_els - 1) *
3626 sizeof(fr_trc_el_t));
3628 /* Calculate the maximum trace data area in */
3629 /* the UDP packet */
3630 card->u.f.trc_bfr_space=(MAX_LGTH_UDP_MGNT_PKT -
3631 //sizeof(fr_encap_hdr_t) -
3637 /* set return code */
3638 fr_udp_pkt->cblock.result = 0;
3641 /* set return code to line trace already
3643 fr_udp_pkt->cblock.result = 1;
3646 mbox->cmd.length = 0;
3647 card->TracingEnabled = 1;
3651 case FPIPE_DISABLE_TRACING:
3652 if(card->TracingEnabled) {
3655 mbox->cmd.command = FR_SET_TRACE_CONFIG;
3656 mbox->cmd.length = 1;
3657 mbox->cmd.dlci = 0x00;
3658 mbox->data[0] = ~ACTIVATE_TRC;
3659 err = sdla_exec(mbox) ?
3660 mbox->cmd.result : CMD_TIMEOUT;
3661 } while (err && c_retry-- && fr_event(card, err, mbox));
3664 /* set return code */
3665 fr_udp_pkt->cblock.result = 0;
3666 mbox->cmd.length = 0;
3667 card->TracingEnabled = 0;
3670 case FPIPE_GET_TRACE_INFO:
3672 /* Line trace cannot be performed on the 502 */
3673 if(!card->TracingEnabled) {
3674 /* set return code */
3675 fr_udp_pkt->cblock.result = 1;
3676 mbox->cmd.length = 0;
3680 ptr_trc_el = (void *)card->u.f.curr_trc_el;
3683 fr_udp_pkt->data[0x00] = 0x00;
3685 for(frames = 0; frames < MAX_FRMS_TRACED; frames ++) {
3687 sdla_peek(&card->hw, (unsigned long)ptr_trc_el,
3688 (void *)&trc_el.flag,
3689 sizeof(fr_trc_el_t));
3690 if(trc_el.flag == 0x00) {
3693 if((card->u.f.trc_bfr_space - buffer_length)
3694 < sizeof(fpipemon_trc_hdr_t)) {
3695 fr_udp_pkt->data[0x00] |= MORE_TRC_DATA;
3700 (fpipemon_trc_t *)&fr_udp_pkt->data[buffer_length];
3701 fpipemon_trc->fpipemon_trc_hdr.status =
3703 fpipemon_trc->fpipemon_trc_hdr.tmstamp =
3705 fpipemon_trc->fpipemon_trc_hdr.length =
3708 if(!trc_el.offset || !trc_el.length) {
3710 fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x00;
3712 }else if((trc_el.length + sizeof(fpipemon_trc_hdr_t) + 1) >
3713 (card->u.f.trc_bfr_space - buffer_length)){
3715 fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x00;
3716 fr_udp_pkt->data[0x00] |= MORE_TRC_DATA;
3719 fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x01;
3720 sdla_peek(&card->hw, trc_el.offset,
3726 sdla_poke(&card->hw, (unsigned long)ptr_trc_el,
3730 if((void *)ptr_trc_el > card->u.f.trc_el_last)
3731 ptr_trc_el = (void*)card->u.f.trc_el_base;
3733 buffer_length += sizeof(fpipemon_trc_hdr_t);
3734 if(fpipemon_trc->fpipemon_trc_hdr.data_passed) {
3735 buffer_length += trc_el.length;
3738 if(fr_udp_pkt->data[0x00] & MORE_TRC_DATA) {
3743 if(frames == MAX_FRMS_TRACED) {
3744 fr_udp_pkt->data[0x00] |= MORE_TRC_DATA;
3747 card->u.f.curr_trc_el = (void *)ptr_trc_el;
3749 /* set the total number of frames passed */
3750 fr_udp_pkt->data[0x00] |=
3751 ((frames << 1) & (MAX_FRMS_TRACED << 1));
3753 /* set the data length and return code */
3754 fr_udp_pkt->cblock.length = mbox->cmd.length = buffer_length;
3755 fr_udp_pkt->cblock.result = 0;
3758 case FPIPE_FT1_READ_STATUS:
3759 sdla_peek(&card->hw, 0xF020,
3760 &fr_udp_pkt->data[0x00] , 2);
3761 fr_udp_pkt->cblock.length = mbox->cmd.length = 2;
3762 fr_udp_pkt->cblock.result = 0;
3765 case FPIPE_FLUSH_DRIVER_STATS:
3766 init_chan_statistics(chan);
3767 init_global_statistics(card);
3768 mbox->cmd.length = 0;
3771 case FPIPE_ROUTER_UP_TIME:
3772 do_gettimeofday(&tv);
3773 chan->router_up_time = tv.tv_sec -
3774 chan->router_start_time;
3775 *(unsigned long *)&fr_udp_pkt->data =
3776 chan->router_up_time;
3777 mbox->cmd.length = fr_udp_pkt->cblock.length = 4;
3778 fr_udp_pkt->cblock.result = 0;
3781 case FPIPE_DRIVER_STAT_IFSEND:
3782 memcpy(fr_udp_pkt->data,
3783 &chan->drvstats_if_send.if_send_entry,
3784 sizeof(if_send_stat_t));
3785 mbox->cmd.length = fr_udp_pkt->cblock.length =sizeof(if_send_stat_t);
3786 fr_udp_pkt->cblock.result = 0;
3789 case FPIPE_DRIVER_STAT_INTR:
3791 memcpy(fr_udp_pkt->data,
3792 &card->statistics.isr_entry,
3793 sizeof(global_stats_t));
3795 memcpy(&fr_udp_pkt->data[sizeof(global_stats_t)],
3796 &chan->drvstats_rx_intr.rx_intr_no_socket,
3797 sizeof(rx_intr_stat_t));
3799 mbox->cmd.length = fr_udp_pkt->cblock.length =
3800 sizeof(global_stats_t) +
3801 sizeof(rx_intr_stat_t);
3802 fr_udp_pkt->cblock.result = 0;
3805 case FPIPE_DRIVER_STAT_GEN:
3806 memcpy(fr_udp_pkt->data,
3807 &chan->drvstats_gen.UDP_PIPE_mgmt_kmalloc_err,
3808 sizeof(pipe_mgmt_stat_t));
3810 memcpy(&fr_udp_pkt->data[sizeof(pipe_mgmt_stat_t)],
3811 &card->statistics, sizeof(global_stats_t));
3813 mbox->cmd.length = fr_udp_pkt->cblock.length = sizeof(global_stats_t)+
3814 sizeof(rx_intr_stat_t);
3815 fr_udp_pkt->cblock.result = 0;
3819 case FR_FT1_STATUS_CTRL:
3820 if(fr_udp_pkt->data[0] == 1) {
3822 fr_udp_pkt->cblock.result = 0;
3823 mbox->cmd.length = 1;
3828 /* Disable FT1 MONITOR STATUS */
3829 if(fr_udp_pkt->data[0] == 0) {
3830 if( --rCount != 0) {
3831 fr_udp_pkt->cblock.result = 0;
3832 mbox->cmd.length = 1;
3843 &fr_udp_pkt->cblock.command,
3845 if(mbox->cmd.length) {
3847 (char *)fr_udp_pkt->data,
3851 err = sdla_exec(mbox) ? mbox->cmd.result :
3853 } while (err && c_retry-- && fr_event(card, err, mbox));
3857 UDP_PIPE_mgmt_adptr_cmnd_OK ++;
3860 UDP_PIPE_mgmt_adptr_cmnd_timeout ++;
3862 /* copy the result back to our buffer */
3863 memcpy(&fr_udp_pkt->cblock.command,
3864 &mbox->cmd, sizeof(fr_cmd_t));
3866 if(mbox->cmd.length) {
3867 memcpy(&fr_udp_pkt->data,
3868 &mbox->data, mbox->cmd.length);
3874 fr_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
3875 len = reply_udp(card->u.f.udp_pkt_data, mbox->cmd.length);
3877 if(udp_pkt_src == UDP_PKT_FRM_NETWORK) {
3879 chan->fr_header_len=2;
3880 chan->fr_header[0]=Q922_UI;
3881 chan->fr_header[1]=NLPID_IP;
3883 err = fr_send_data_header(card, dlci, 0, len,
3884 card->u.f.udp_pkt_data,chan->fr_header_len);
3886 chan->drvstats_gen.UDP_PIPE_mgmt_adptr_send_passed ++;
3888 chan->drvstats_gen.UDP_PIPE_mgmt_adptr_send_failed ++;
3892 /* Allocate socket buffer */
3893 if((new_skb = dev_alloc_skb(len)) != NULL) {
3895 /* copy data into new_skb */
3896 buf = skb_put(new_skb, len);
3897 memcpy(buf, card->u.f.udp_pkt_data, len);
3900 UDP_PIPE_mgmt_passed_to_stack ++;
3902 new_skb->protocol = htons(ETH_P_IP);
3903 new_skb->mac.raw = new_skb->data;
3907 chan->drvstats_gen.UDP_PIPE_mgmt_no_socket ++;
3909 "%s: UDP mgmt cmnd, no socket buffers available!\n",
3914 card->u.f.udp_pkt_lgth = 0;
3919 /*==============================================================================
3920 * Send Inverse ARP Request
3923 int send_inarp_request(sdla_t *card, struct net_device *dev)
3927 arphdr_1490_t *ArpPacket;
3928 arphdr_fr_t *arphdr;
3929 fr_channel_t *chan = dev->priv;
3930 struct in_device *in_dev;
3932 in_dev = dev->ip_ptr;
3934 if(in_dev != NULL ) {
3936 ArpPacket = kmalloc(sizeof(arphdr_1490_t) + sizeof(arphdr_fr_t), GFP_ATOMIC);
3937 /* SNAP Header indicating ARP */
3938 ArpPacket->control = 0x03;
3939 ArpPacket->pad = 0x00;
3940 ArpPacket->NLPID = 0x80;
3941 ArpPacket->OUI[0] = 0;
3942 ArpPacket->OUI[1] = 0;
3943 ArpPacket->OUI[2] = 0;
3944 ArpPacket->PID = 0x0608;
3946 arphdr = (arphdr_fr_t *)(ArpPacket + 1); // Go to ARP Packet
3949 arphdr->ar_hrd = 0x0F00; /* Frame Relay HW type */
3950 arphdr->ar_pro = 0x0008; /* IP Protocol */
3951 arphdr->ar_hln = 2; /* HW addr length */
3952 arphdr->ar_pln = 4; /* IP addr length */
3953 arphdr->ar_op = htons(0x08); /* InARP Request */
3954 arphdr->ar_sha = 0; /* src HW DLCI - Doesn't matter */
3955 if(in_dev->ifa_list != NULL)
3956 arphdr->ar_sip = in_dev->ifa_list->ifa_local; /* Local Address */else
3958 arphdr->ar_tha = 0; /* dst HW DLCI - Doesn't matter */
3959 arphdr->ar_tip = 0; /* Remote Address -- what we want */
3961 err = fr_send(card, chan->dlci, 0, sizeof(arphdr_1490_t) + sizeof(arphdr_fr_t),
3965 printk(KERN_INFO "\n%s: Sending InARP request on DLCI %d.\n",
3966 card->devname, chan->dlci);
3967 clear_bit(ARP_CRIT,&card->wandev.critical);
3972 printk(KERN_INFO "%s: INARP ERROR: %s doesn't have a local IP address!\n",
3973 card->devname,dev->name);
3981 /*==============================================================================
3982 * Check packet for ARP Type
3985 int is_arp(void *buf)
3987 arphdr_1490_t *arphdr = (arphdr_1490_t *)buf;
3989 if (arphdr->pad == 0x00 &&
3990 arphdr->NLPID == 0x80 &&
3991 arphdr->PID == 0x0608)
3996 /*==============================================================================
3997 * Process ARP Packet Type
4000 int process_ARP(arphdr_1490_t *ArpPacket, sdla_t *card, struct net_device* dev)
4004 arphdr_fr_t *arphdr = (arphdr_fr_t *)(ArpPacket + 1); /* Skip header */
4005 fr_rx_buf_ctl_t* frbuf = card->rxmb;
4006 struct in_device *in_dev;
4007 fr_channel_t *chan = dev->priv;
4009 /* Before we transmit ARP packet, we must check
4010 * to see that we are not currently transmitting a
4011 * frame (in 'if_send()') and that we are not
4012 * already in a 'delayed transmit' state. */
4013 if (check_tx_status(card,dev)){
4014 if (net_ratelimit()){
4015 printk(KERN_INFO "%s: Disabling comminication to process ARP\n",
4018 set_bit(ARP_CRIT,&card->wandev.critical);
4022 in_dev = dev->ip_ptr;
4024 /* Check that IP addresses exist for our network address */
4025 if (in_dev == NULL || in_dev->ifa_list == NULL)
4028 switch (ntohs(arphdr->ar_op)) {
4030 case 0x08: // Inverse ARP request -- Send Reply, add route.
4032 /* Check for valid Address */
4033 printk(KERN_INFO "%s: Recvd PtP addr -InArp Req: %u.%u.%u.%u\n",
4034 card->devname, NIPQUAD(arphdr->ar_sip));
4037 /* Check that the network address is the same as ours, only
4038 * if the netowrk mask is not 255.255.255.255. Otherwise
4039 * this check would not make sense */
4041 if (in_dev->ifa_list->ifa_mask != 0xFFFFFFFF &&
4042 (in_dev->ifa_list->ifa_mask & arphdr->ar_sip) !=
4043 (in_dev->ifa_list->ifa_mask & in_dev->ifa_list->ifa_local)){
4045 "%s: Invalid PtP address. %u.%u.%u.%u InARP ignored.\n",
4046 card->devname,NIPQUAD(arphdr->ar_sip));
4048 printk(KERN_INFO "%s: mask %u.%u.%u.%u\n",
4049 card->devname, NIPQUAD(in_dev->ifa_list->ifa_mask));
4050 printk(KERN_INFO "%s: local %u.%u.%u.%u\n",
4051 card->devname,NIPQUAD(in_dev->ifa_list->ifa_local));
4055 if (in_dev->ifa_list->ifa_local == arphdr->ar_sip){
4057 "%s: Local addr = PtP addr. InARP ignored.\n",
4062 arphdr->ar_op = htons(0x09); /* InARP Reply */
4065 arphdr->ar_tip = arphdr->ar_sip;
4066 arphdr->ar_sip = in_dev->ifa_list->ifa_local;
4068 chan->ip_local = in_dev->ifa_list->ifa_local;
4069 chan->ip_remote = arphdr->ar_sip;
4071 fr_send(card, frbuf->dlci, 0, frbuf->length, (void *)ArpPacket);
4073 if (test_bit(ARP_CRIT,&card->wandev.critical)){
4074 if (net_ratelimit()){
4075 printk(KERN_INFO "%s: ARP Processed Enabling Communication!\n",
4079 clear_bit(ARP_CRIT,&card->wandev.critical);
4081 chan->ip_local = in_dev->ifa_list->ifa_local;
4082 chan->ip_remote = arphdr->ar_sip;
4084 /* Add Route Flag */
4085 /* The route will be added in the polling routine so
4086 that it is not interrupt context. */
4088 chan->route_flag = ADD_ROUTE;
4089 trigger_fr_poll (dev);
4093 case 0x09: // Inverse ARP reply
4095 /* Check for valid Address */
4096 printk(KERN_INFO "%s: Recvd PtP addr %u.%u.%u.%u -InArp Reply\n",
4097 card->devname, NIPQUAD(arphdr->ar_sip));
4100 /* Compare network addresses, only if network mask
4101 * is not 255.255.255.255 It would not make sense
4102 * to perform this test if the mask was all 1's */
4104 if (in_dev->ifa_list->ifa_mask != 0xffffffff &&
4105 (in_dev->ifa_list->ifa_mask & arphdr->ar_sip) !=
4106 (in_dev->ifa_list->ifa_mask & in_dev->ifa_list->ifa_local)) {
4108 printk(KERN_INFO "%s: Invalid PtP address. InARP ignored.\n",
4113 /* Make sure that the received IP address is not
4114 * the same as our own local address */
4115 if (in_dev->ifa_list->ifa_local == arphdr->ar_sip) {
4116 printk(KERN_INFO "%s: Local addr = PtP addr. InARP ignored.\n",
4121 chan->ip_local = in_dev->ifa_list->ifa_local;
4122 chan->ip_remote = arphdr->ar_sip;
4124 /* Add Route Flag */
4125 /* The route will be added in the polling routine so
4126 that it is not interrupt context. */
4128 chan->route_flag = ADD_ROUTE;
4129 chan->inarp = INARP_CONFIGURED;
4130 trigger_fr_poll(dev);
4134 break; // ARP's and RARP's -- Shouldn't happen.
4141 /*============================================================
4145 * Add an fr_arp() task into a arp
4146 * timer handler for a specific dlci/interface.
4147 * This will kick the fr_arp() routine
4148 * within the specified time interval.
4151 * This timer is used to send ARP requests at
4152 * certain time intervals.
4153 * Called by an interrupt to request an action
4157 static void trigger_fr_arp(struct net_device *dev)
4159 fr_channel_t* chan = dev->priv;
4161 mod_timer(&chan->fr_arp_timer, jiffies + chan->inarp_interval * HZ);
4167 /*==============================================================================
4168 * ARP Request Action
4170 * This funciton is called by timer interrupt to send an arp request
4171 * to the remote end.
4174 static void fr_arp (unsigned long data)
4176 struct net_device *dev = (struct net_device *)data;
4177 fr_channel_t *chan = dev->priv;
4178 volatile sdla_t *card = chan->card;
4179 fr508_flags_t* flags = card->flags;
4181 /* Send ARP packets for all devs' until
4182 * ARP state changes to CONFIGURED */
4184 if (chan->inarp == INARP_REQUEST &&
4185 chan->common.state == WAN_CONNECTED &&
4186 card->wandev.state == WAN_CONNECTED){
4187 set_bit(0,&chan->inarp_ready);
4188 card->u.f.timer_int_enabled |= TMR_INT_ENABLED_ARP;
4189 flags->imask |= FR_INTR_TIMER;
4196 /*==============================================================================
4197 * Perform the Interrupt Test by running the READ_CODE_VERSION command MAX_INTR_
4198 * TEST_COUNTER times.
4200 static int intr_test( sdla_t* card )
4202 fr_mbox_t* mb = card->mbox;
4205 err = fr_set_intr_mode(card, FR_INTR_READY, card->wandev.mtu, 0 );
4207 if (err == CMD_OK) {
4209 for ( i = 0; i < MAX_INTR_TEST_COUNTER; i++ ) {
4210 /* Run command READ_CODE_VERSION */
4212 mb->cmd.command = FR_READ_CODE_VERSION;
4213 err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
4215 fr_event(card, err, mb);
4222 err = fr_set_intr_mode( card, 0, card->wandev.mtu, 0 );
4230 /*==============================================================================
4231 * Determine what type of UDP call it is. FPIPE8ND ?
4233 static int udp_pkt_type( struct sk_buff *skb, sdla_t* card )
4235 fr_udp_pkt_t *fr_udp_pkt = (fr_udp_pkt_t *)skb->data;
4240 if((fr_udp_pkt->ip_pkt.protocol == UDPMGMT_UDP_PROTOCOL) &&
4241 (fr_udp_pkt->ip_pkt.ver_inet_hdr_length == 0x45) &&
4242 (fr_udp_pkt->udp_pkt.udp_dst_port ==
4243 ntohs(card->wandev.udp_port)) &&
4244 (fr_udp_pkt->wp_mgmt.request_reply ==
4246 if(!strncmp(fr_udp_pkt->wp_mgmt.signature,
4247 UDPMGMT_FPIPE_SIGNATURE, 8)){
4248 return UDP_FPIPE_TYPE;
4251 return UDP_INVALID_TYPE;
4255 /*==============================================================================
4256 * Initializes the Statistics values in the fr_channel structure.
4258 void init_chan_statistics( fr_channel_t* chan)
4260 memset(&chan->drvstats_if_send.if_send_entry, 0,
4261 sizeof(if_send_stat_t));
4262 memset(&chan->drvstats_rx_intr.rx_intr_no_socket, 0,
4263 sizeof(rx_intr_stat_t));
4264 memset(&chan->drvstats_gen.UDP_PIPE_mgmt_kmalloc_err, 0,
4265 sizeof(pipe_mgmt_stat_t));
4268 /*==============================================================================
4269 * Initializes the Statistics values in the Sdla_t structure.
4271 void init_global_statistics( sdla_t* card )
4273 /* Intialize global statistics for a card */
4274 memset(&card->statistics.isr_entry, 0, sizeof(global_stats_t));
4277 static void read_DLCI_IB_mapping( sdla_t* card, fr_channel_t* chan )
4279 fr_mbox_t* mbox = card->mbox;
4280 int retry = MAX_CMD_RETRY;
4281 dlci_IB_mapping_t* result;
4282 int err, counter, found;
4285 mbox->cmd.command = FR_READ_DLCI_IB_MAPPING;
4286 mbox->cmd.length = 0;
4287 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
4288 } while (err && retry-- && fr_event(card, err, mbox));
4290 if( mbox->cmd.result != 0){
4291 printk(KERN_INFO "%s: Read DLCI IB Mapping failed\n",
4295 counter = mbox->cmd.length / sizeof(dlci_IB_mapping_t);
4296 result = (void *)mbox->data;
4299 for (; counter; --counter, ++result) {
4300 if ( result->dlci == chan->dlci ) {
4301 chan->IB_addr = result->addr_value;
4302 if(card->hw.type == SDLA_S514){
4303 chan->dlci_int_interface =
4304 (void*)(card->hw.dpmbase +
4307 chan->dlci_int_interface =
4308 (void*)(card->hw.dpmbase +
4309 (chan->IB_addr & 0x00001FFF));
4317 printk( KERN_INFO "%s: DLCI %d not found by IB MAPPING cmd\n",
4318 card->devname, chan->dlci);
4323 void s508_s514_lock(sdla_t *card, unsigned long *smp_flags)
4325 if (card->hw.type != SDLA_S514){
4327 spin_lock_irqsave(&card->wandev.lock, *smp_flags);
4329 spin_lock(&card->u.f.if_send_lock);
4335 void s508_s514_unlock(sdla_t *card, unsigned long *smp_flags)
4337 if (card->hw.type != SDLA_S514){
4339 spin_unlock_irqrestore (&card->wandev.lock, *smp_flags);
4341 spin_unlock(&card->u.f.if_send_lock);
4348 /*----------------------------------------------------------------------
4349 RECEIVE INTERRUPT: BOTTOM HALF HANDLERS
4350 ----------------------------------------------------------------------*/
4353 /*========================================================
4357 * Insert a received packet into a circular
4358 * rx queue. This packet will be picked up
4359 * by fr_bh() and sent up the stack to the
4363 * This function is called by rx interrupt,
4368 static int bh_enqueue(struct net_device *dev, struct sk_buff *skb)
4370 /* Check for full */
4371 fr_channel_t* chan = dev->priv;
4372 sdla_t *card = chan->card;
4375 if (atomic_read(&chan->bh_buff_used) == MAX_BH_BUFF){
4376 ++card->wandev.stats.rx_dropped;
4377 dev_kfree_skb_any(skb);
4381 ((bh_data_t *)&chan->bh_head[chan->bh_write])->skb = skb;
4383 if (chan->bh_write == (MAX_BH_BUFF-1)){
4389 atomic_inc(&chan->bh_buff_used);
4395 /*========================================================
4399 * Kick the fr_bh() handler
4402 * rx interrupt calls this function during
4406 static void trigger_fr_bh (fr_channel_t *chan)
4408 if (!test_and_set_bit(0,&chan->tq_working)){
4409 wanpipe_queue_work(&chan->common.wanpipe_work);
4414 /*========================================================
4418 * Frame relay receive BH handler.
4419 * Dequeue data from the BH circular
4420 * buffer and pass it up the API sock.
4423 * This fuction is used to offload the
4424 * rx_interrupt during API operation mode.
4425 * The fr_bh() function executes for each
4428 * Once receive interrupt copies data from the
4429 * card into an skb buffer, the skb buffer
4430 * is appended to a circular BH buffer.
4431 * Then the interrupt kicks fr_bh() to finish the
4432 * job at a later time (not within the interrupt).
4435 * Interrupts use this to defer a task to
4436 * a polling routine.
4440 static void fr_bh(struct net_device * dev)
4442 fr_channel_t* chan = dev->priv;
4443 sdla_t *card = chan->card;
4444 struct sk_buff *skb;
4446 if (atomic_read(&chan->bh_buff_used) == 0){
4447 clear_bit(0, &chan->tq_working);
4451 while (atomic_read(&chan->bh_buff_used)){
4453 if (chan->common.sk == NULL || chan->common.func == NULL){
4454 clear_bit(0, &chan->tq_working);
4458 skb = ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb;
4462 if (chan->common.sk == NULL || chan->common.func == NULL){
4463 ++card->wandev.stats.rx_dropped;
4464 ++chan->ifstats.rx_dropped;
4465 dev_kfree_skb_any(skb);
4470 if (chan->common.func(skb,dev,chan->common.sk) != 0){
4471 /* Sock full cannot send, queue us for
4473 atomic_set(&chan->common.receive_block,1);
4482 clear_bit(0, &chan->tq_working);
4487 static int fr_bh_cleanup(struct net_device *dev)
4489 fr_channel_t* chan = dev->priv;
4491 ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb = NULL;
4493 if (chan->bh_read == (MAX_BH_BUFF-1)){
4499 atomic_dec(&chan->bh_buff_used);
4504 /*----------------------------------------------------------------------
4505 POLL BH HANDLERS AND KICK ROUTINES
4506 ----------------------------------------------------------------------*/
4508 /*============================================================
4512 * Add a fr_poll() task into a tq_scheduler bh handler
4513 * for a specific dlci/interface. This will kick
4514 * the fr_poll() routine at a later time.
4517 * Interrupts use this to defer a taks to
4518 * a polling routine.
4521 static void trigger_fr_poll(struct net_device *dev)
4523 fr_channel_t* chan = dev->priv;
4524 schedule_work(&chan->fr_poll_work);
4529 /*============================================================
4533 * We cannot manipulate the routing tables, or
4534 * ip addresses withing the interrupt. Therefore
4535 * we must perform such actons outside an interrupt
4539 * Frame relay polling routine, responsible for
4540 * shutting down interfaces upon disconnect
4541 * and adding/removing routes.
4544 * This function is executed for each frame relay
4545 * dlci/interface through a tq_schedule bottom half.
4547 * trigger_fr_poll() function is used to kick
4548 * the fr_poll routine.
4551 static void fr_poll(struct net_device *dev)
4558 if (!dev || (chan = dev->priv) == NULL)
4563 /* (Re)Configuraiton is in progress, stop what you are
4564 * doing and get out */
4565 if (test_bit(PERI_CRIT,&card->wandev.critical)){
4569 switch (chan->common.state){
4571 case WAN_DISCONNECTED:
4573 if (test_bit(DYN_OPT_ON,&chan->interface_down) &&
4574 !test_bit(DEV_DOWN, &chan->interface_down) &&
4577 printk(KERN_INFO "%s: Interface %s is Down.\n",
4578 card->devname,dev->name);
4579 change_dev_flags(dev,dev->flags&~IFF_UP);
4580 set_bit(DEV_DOWN, &chan->interface_down);
4581 chan->route_flag = NO_ROUTE;
4584 if (chan->inarp != INARP_NONE)
4591 if (test_bit(DYN_OPT_ON,&chan->interface_down) &&
4592 test_bit(DEV_DOWN, &chan->interface_down) &&
4593 !(dev->flags&IFF_UP)){
4595 printk(KERN_INFO "%s: Interface %s is Up.\n",
4596 card->devname,dev->name);
4598 change_dev_flags(dev,dev->flags|IFF_UP);
4599 clear_bit(DEV_DOWN, &chan->interface_down);
4603 if (chan->inarp != INARP_NONE){
4608 if (chan->gateway && check_gateway)
4609 add_gateway(card,dev);
4618 /*==============================================================
4622 * We cannot transmit from an interrupt while
4623 * the if_send is transmitting data. Therefore,
4624 * we must check whether the tx buffers are
4625 * begin used, before we transmit from an
4629 * Checks whether it's safe to use the transmit
4633 * ARP and UDP handling routines use this function
4634 * because, they need to transmit data during
4638 static int check_tx_status(sdla_t *card, struct net_device *dev)
4641 if (card->hw.type == SDLA_S514){
4642 if (test_bit(SEND_CRIT, (void*)&card->wandev.critical) ||
4643 test_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical)) {
4648 if (netif_queue_stopped(dev) || (card->u.f.tx_interrupts_pending))
4654 /*===============================================================
4658 * Move the dev pointer to the next location in the
4659 * link list. Check if we are at the end of the
4660 * list, if so start from the begining.
4663 * Timer interrupt uses this function to efficiently
4664 * step through the devices that need to send ARP data.
4668 struct net_device *move_dev_to_next(sdla_t *card, struct net_device *dev)
4670 if (card->wandev.new_if_cnt != 1){
4671 if (!*((struct net_device **)dev->priv))
4672 return card->wandev.dev;
4674 return *((struct net_device **)dev->priv);
4679 /*==============================================================
4683 * All commands must be performed inside of a
4687 * Kick the config_fr() routine throught the
4692 static void trigger_config_fr (sdla_t *card)
4694 fr508_flags_t* flags = card->flags;
4696 card->u.f.timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
4697 flags->imask |= FR_INTR_TIMER;
4701 /*==============================================================
4705 * All commands must be performed inside of a
4709 * Configure a DLCI. This function is executed
4710 * by a timer_interrupt. The if_open() function
4714 * new_if() collects all data necessary to
4715 * configure the DLCI. It sets the chan->dlci_ready
4716 * bit. When the if_open() function is executed
4717 * it checks this bit, and if its set it triggers
4718 * the timer interrupt to execute the config_fr()
4722 static void config_fr (sdla_t *card)
4724 struct net_device *dev;
4727 for (dev = card->wandev.dev; dev;
4728 dev = *((struct net_device **)dev->priv)) {
4730 if ((chan=dev->priv) == NULL)
4733 if (!test_bit(0,&chan->config_dlci))
4736 clear_bit(0,&chan->config_dlci);
4738 /* If signalling is set to NO, then setup
4739 * DLCI addresses right away. Don't have to wait for
4742 if (card->wandev.signalling == WANOPT_NO){
4743 printk(KERN_INFO "%s: Signalling set to NO: Mapping DLCI's\n",
4745 if (fr_init_dlci(card,chan)){
4746 printk(KERN_INFO "%s: ERROR: Failed to configure DLCI %i !\n",
4747 card->devname, chan->dlci);
4752 if (card->wandev.station == WANOPT_CPE) {
4754 update_chan_state(dev);
4756 /* CPE: issue full status enquiry */
4757 fr_issue_isf(card, FR_ISF_FSE);
4760 /* FR switch: activate DLCI(s) */
4762 /* For Switch emulation we have to ADD and ACTIVATE
4763 * the DLCI(s) that were configured with the SET_DLCI_
4764 * CONFIGURATION command. Add and Activate will fail if
4765 * DLCI specified is not included in the list.
4767 * Also If_open is called once for each interface. But
4768 * it does not get in here for all the interface. So
4769 * we have to pass the entire list of DLCI(s) to add
4770 * activate routines.
4773 if (!check_dlci_config (card, chan)){
4774 fr_add_dlci(card, chan->dlci);
4775 fr_activate_dlci(card, chan->dlci);
4779 card->u.f.dlci_to_dev_map[chan->dlci] = dev;
4785 /*==============================================================
4789 * All commands must be executed during an interrupt.
4792 * Trigger uncofig_fr() function through
4793 * the timer interrupt.
4797 static void trigger_unconfig_fr(struct net_device *dev)
4799 fr_channel_t *chan = dev->priv;
4800 volatile sdla_t *card = chan->card;
4801 unsigned long timeout;
4802 fr508_flags_t* flags = card->flags;
4803 int reset_critical=0;
4805 if (test_bit(PERI_CRIT,(void*)&card->wandev.critical)){
4806 clear_bit(PERI_CRIT,(void*)&card->wandev.critical);
4810 /* run unconfig_dlci() function
4811 * throught the timer interrupt */
4812 set_bit(0,(void*)&chan->unconfig_dlci);
4813 card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UNCONFIG;
4814 flags->imask |= FR_INTR_TIMER;
4816 /* Wait for the command to complete */
4820 if(!(card->u.f.timer_int_enabled & TMR_INT_ENABLED_UNCONFIG))
4823 if (time_after(jiffies, timeout + 1 * HZ)){
4824 card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UNCONFIG;
4825 printk(KERN_INFO "%s: Failed to delete DLCI %i\n",
4826 card->devname,chan->dlci);
4831 if (reset_critical){
4832 set_bit(PERI_CRIT,(void*)&card->wandev.critical);
4836 /*==============================================================
4840 * All commands must be executed during an interrupt.
4843 * Remove the dlci from firmware.
4844 * This funciton is used in NODE shutdown.
4847 static void unconfig_fr (sdla_t *card)
4849 struct net_device *dev;
4852 for (dev = card->wandev.dev; dev;
4853 dev = *((struct net_device **)dev->priv)){
4855 if ((chan=dev->priv) == NULL)
4858 if (!test_bit(0,&chan->unconfig_dlci))
4861 clear_bit(0,&chan->unconfig_dlci);
4863 if (card->wandev.station == WANOPT_NODE){
4864 printk(KERN_INFO "%s: Unconfiguring DLCI %i\n",
4865 card->devname,chan->dlci);
4866 fr_delete_dlci(card,chan->dlci);
4868 card->u.f.dlci_to_dev_map[chan->dlci] = NULL;
4872 static int setup_fr_header(struct sk_buff *skb, struct net_device* dev,
4875 fr_channel_t *chan=dev->priv;
4877 if (op_mode == WANPIPE) {
4878 chan->fr_header[0]=Q922_UI;
4880 switch (htons(skb->protocol)){
4882 chan->fr_header[1]=NLPID_IP;
4891 /* If we are in bridging mode, we must apply
4892 * an Ethernet header
4894 if (op_mode == BRIDGE || op_mode == BRIDGE_NODE) {
4895 /* Encapsulate the packet as a bridged Ethernet frame. */
4897 printk(KERN_INFO "%s: encapsulating skb for frame relay\n",
4900 chan->fr_header[0] = 0x03;
4901 chan->fr_header[1] = 0x00;
4902 chan->fr_header[2] = 0x80;
4903 chan->fr_header[3] = 0x00;
4904 chan->fr_header[4] = 0x80;
4905 chan->fr_header[5] = 0xC2;
4906 chan->fr_header[6] = 0x00;
4907 chan->fr_header[7] = 0x07;
4910 skb->protocol = ETH_P_802_3;
4918 static int check_dlci_config (sdla_t *card, fr_channel_t *chan)
4920 fr_mbox_t* mbox = card->mbox;
4922 fr_conf_t *conf=NULL;
4923 unsigned short dlci_num = chan->dlci;
4925 struct net_device *dev = NULL;
4927 mbox->cmd.command = FR_READ_CONFIG;
4928 mbox->cmd.length = 0;
4929 mbox->cmd.dlci = dlci_num;
4931 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
4937 for (dev = card->wandev.dev; dev;
4938 dev=*((struct net_device **)dev->priv))
4939 set_chan_state(dev,WAN_DISCONNECTED);
4941 printk(KERN_INFO "DLCI %i Not configured, configuring\n",dlci_num);
4943 mbox->cmd.command = FR_COMM_DISABLE;
4944 mbox->cmd.length = 0;
4945 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
4947 fr_event(card, err, mbox);
4951 printk(KERN_INFO "Disabled Communications \n");
4953 mbox->cmd.command = FR_READ_CONFIG;
4954 mbox->cmd.length = 0;
4957 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
4960 fr_event(card, err, mbox);
4964 conf = (fr_conf_t *)mbox->data;
4967 for (dev = card->wandev.dev; dev;
4968 dev = *((struct net_device **)dev->priv)) {
4969 fr_channel_t *chan_tmp = dev->priv;
4970 conf->dlci[dlci_offset] = chan_tmp->dlci;
4974 printk(KERN_INFO "Got Fr configuration Buffer Length is %x Dlci %i Dlci Off %i\n",
4976 mbox->cmd.length > 0x20 ? conf->dlci[0] : -1,
4979 mbox->cmd.length = 0x20 + dlci_offset*2;
4981 mbox->cmd.command = FR_SET_CONFIG;
4984 err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
4987 fr_event(card, err, mbox);
4991 initialize_rx_tx_buffers (card);
4994 printk(KERN_INFO "Configuraiton Succeded for new DLCI %i\n",dlci_num);
4996 if (fr_comm_enable (card)){
5000 printk(KERN_INFO "Enabling Communications \n");
5002 for (dev = card->wandev.dev; dev;
5003 dev = *((struct net_device **)dev->priv)) {
5004 fr_channel_t *chan_tmp = dev->priv;
5005 fr_init_dlci(card,chan_tmp);
5006 fr_add_dlci(card, chan_tmp->dlci);
5007 fr_activate_dlci(card, chan_tmp->dlci);
5010 printk(KERN_INFO "END OF CONFIGURAITON %i\n",dlci_num);
5015 static void initialize_rx_tx_buffers (sdla_t *card)
5017 fr_buf_info_t* buf_info;
5019 if (card->hw.type == SDLA_S514) {
5021 buf_info = (void*)(card->hw.dpmbase + FR_MB_VECTOR +
5024 card->rxmb = (void*)(buf_info->rse_next + card->hw.dpmbase);
5026 card->u.f.rxmb_base =
5027 (void*)(buf_info->rse_base + card->hw.dpmbase);
5029 card->u.f.rxmb_last =
5030 (void*)(buf_info->rse_base +
5031 (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) +
5034 buf_info = (void*)(card->hw.dpmbase + FR508_RXBC_OFFS);
5036 card->rxmb = (void*)(buf_info->rse_next -
5037 FR_MB_VECTOR + card->hw.dpmbase);
5039 card->u.f.rxmb_base =
5040 (void*)(buf_info->rse_base -
5041 FR_MB_VECTOR + card->hw.dpmbase);
5043 card->u.f.rxmb_last =
5044 (void*)(buf_info->rse_base +
5045 (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) -
5046 FR_MB_VECTOR + card->hw.dpmbase);
5049 card->u.f.rx_base = buf_info->buf_base;
5050 card->u.f.rx_top = buf_info->buf_top;
5052 card->u.f.tx_interrupts_pending = 0;
5059 MODULE_LICENSE("GPL");
5061 /****** End *****************************************************************/
projects / linux-2.6 / blob