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1da177e4 LT |
1 | /***************************************************************************** |
2 | * sdla_fr.c WANPIPE(tm) Multiprotocol WAN Link Driver. Frame relay module. | |
3 | * | |
4 | * Author(s): Nenad Corbic <ncorbic@sangoma.com> | |
5 | * Gideon Hack | |
6 | * | |
7 | * Copyright: (c) 1995-2001 Sangoma Technologies Inc. | |
8 | * | |
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 | |
34 | * interface setups. | |
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 | |
43 | * | |
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 | |
49 | * signalling. | |
50 | * o Took out IPX support, implement in next | |
51 | * version | |
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 | |
74 | * testing. | |
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 | |
80 | * Driver Statistics. | |
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) | |
108 | * forever. | |
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 | |
119 | * structure. | |
120 | * May 21, 1997 Jaspreet Singh o Fixed UDP Management for multiple | |
121 | * boards. | |
122 | * | |
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 | |
131 | * returning 0 | |
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_ | |
137 | * mode | |
138 | * Jan 02, 1997 Gene Kozin Initial version. | |
139 | *****************************************************************************/ | |
140 | ||
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 */ | |
a8178345 | 155 | #include <linux/jiffies.h> /* time_after() macro */ |
1da177e4 LT |
156 | #include <asm/errno.h> |
157 | ||
158 | #include <linux/ip.h> | |
159 | #include <linux/if.h> | |
160 | ||
161 | #include <linux/if_wanpipe_common.h> /* Wanpipe Socket */ | |
162 | #include <linux/if_wanpipe.h> | |
163 | ||
164 | #include <linux/sdla_fr.h> /* frame relay firmware API definitions */ | |
165 | ||
166 | #include <asm/uaccess.h> | |
167 | #include <linux/inetdevice.h> | |
168 | #include <linux/netdevice.h> | |
169 | ||
170 | #include <net/route.h> /* Dynamic Route Creation */ | |
171 | #include <linux/etherdevice.h> /* eth_type_trans() used for bridging */ | |
172 | #include <linux/random.h> | |
173 | ||
174 | /****** Defines & Macros ****************************************************/ | |
175 | ||
176 | #define MAX_CMD_RETRY 10 /* max number of firmware retries */ | |
177 | ||
178 | #define FR_HEADER_LEN 8 /* max encapsulation header size */ | |
179 | #define FR_CHANNEL_MTU 1500 /* unfragmented logical channel MTU */ | |
180 | ||
181 | /* Q.922 frame types */ | |
182 | #define Q922_UI 0x03 /* Unnumbered Info frame */ | |
183 | #define Q922_XID 0xAF | |
184 | ||
185 | /* DLCI configured or not */ | |
186 | #define DLCI_NOT_CONFIGURED 0x00 | |
187 | #define DLCI_CONFIG_PENDING 0x01 | |
188 | #define DLCI_CONFIGURED 0x02 | |
189 | ||
190 | /* CIR enabled or not */ | |
191 | #define CIR_ENABLED 0x00 | |
192 | #define CIR_DISABLED 0x01 | |
193 | ||
194 | #define FRAME_RELAY_API 1 | |
195 | #define MAX_BH_BUFF 10 | |
196 | ||
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))) | |
199 | ||
200 | /****** Data Structures *****************************************************/ | |
201 | ||
202 | /* This is an extention of the 'struct device' we create for each network | |
203 | * interface to keep the rest of channel-specific data. | |
204 | */ | |
205 | typedef struct fr_channel | |
206 | { | |
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; | |
238 | ||
239 | unsigned short transmit_length; | |
240 | struct sk_buff *delay_skb; | |
241 | ||
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; | |
247 | ||
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; | |
253 | ||
254 | u32 ip_local; | |
255 | u32 ip_remote; | |
256 | long config_dlci; | |
257 | long unconfig_dlci; | |
258 | ||
259 | /* Whether this interface should be setup as a gateway. | |
260 | * Used by dynamic route setup code */ | |
261 | u8 gateway; | |
262 | ||
263 | /* True interface type */ | |
264 | u8 true_if_encoding; | |
265 | u8 fr_header[FR_HEADER_LEN]; | |
266 | char fr_header_len; | |
267 | ||
268 | } fr_channel_t; | |
269 | ||
270 | /* Route Flag options */ | |
271 | #define NO_ROUTE 0x00 | |
272 | #define ADD_ROUTE 0x01 | |
273 | #define ROUTE_ADDED 0x02 | |
274 | #define REMOVE_ROUTE 0x03 | |
275 | #define ARP_REQ 0x04 | |
276 | ||
277 | /* inarp options */ | |
278 | #define INARP_NONE 0x00 | |
279 | #define INARP_REQUEST 0x01 | |
280 | #define INARP_CONFIGURED 0x02 | |
281 | ||
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 | |
289 | ||
290 | ||
291 | typedef struct dlci_status | |
292 | { | |
293 | unsigned short dlci PACKED; | |
294 | unsigned char state PACKED; | |
295 | } dlci_status_t; | |
296 | ||
297 | typedef struct dlci_IB_mapping | |
298 | { | |
299 | unsigned short dlci PACKED; | |
300 | unsigned long addr_value PACKED; | |
301 | } dlci_IB_mapping_t; | |
302 | ||
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 | |
305 | */ | |
306 | typedef struct fr_dlci_interface | |
307 | { | |
308 | unsigned char gen_interrupt PACKED; | |
309 | unsigned short packet_length PACKED; | |
310 | unsigned char reserved PACKED; | |
311 | } fr_dlci_interface_t; | |
312 | ||
313 | /* variable for keeping track of enabling/disabling FT1 monitor status */ | |
314 | static int rCount = 0; | |
315 | ||
316 | extern void disable_irq(unsigned int); | |
317 | extern void enable_irq(unsigned int); | |
318 | ||
319 | /* variable for keeping track of number of interrupts generated during | |
320 | * interrupt test routine | |
321 | */ | |
322 | static int Intr_test_counter; | |
323 | ||
324 | /****** Function Prototypes *************************************************/ | |
325 | ||
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, | |
329 | wanif_conf_t *conf); | |
330 | static int del_if(struct wan_device *wandev, struct net_device *dev); | |
331 | static void disable_comm (sdla_t *card); | |
332 | ||
333 | /* WANPIPE-specific entry points */ | |
334 | static int wpf_exec(struct sdla *card, void *u_cmd, void *u_data); | |
335 | ||
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); | |
340 | ||
341 | static void if_tx_timeout(struct net_device *dev); | |
342 | ||
343 | static int if_rebuild_hdr (struct sk_buff *skb); | |
344 | ||
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); | |
349 | ||
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); | |
356 | ||
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, | |
372 | void *buf); | |
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); | |
376 | ||
377 | static int check_dlci_config (sdla_t *card, fr_channel_t *chan); | |
378 | static void initialize_rx_tx_buffers (sdla_t *card); | |
379 | ||
380 | ||
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); | |
385 | ||
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 ); | |
393 | ||
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); | |
400 | ||
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); | |
403 | ||
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); | |
409 | ||
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); | |
413 | ||
414 | static void trigger_unconfig_fr(struct net_device *dev); | |
415 | static void unconfig_fr (sdla_t *); | |
416 | ||
417 | static void trigger_config_fr (sdla_t *); | |
418 | static void config_fr (sdla_t *); | |
419 | ||
420 | ||
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); | |
425 | ||
426 | static void trigger_fr_arp(struct net_device *dev); | |
427 | static void fr_arp (unsigned long data); | |
428 | ||
429 | ||
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); | |
435 | ||
436 | /* IPX functions */ | |
437 | static void switch_net_numbers(unsigned char *sendpacket, | |
438 | unsigned long network_number, unsigned char incoming); | |
439 | ||
440 | static int handle_IPXWAN(unsigned char *sendpacket, char *devname, | |
441 | unsigned char enable_IPX, unsigned long network_number); | |
442 | ||
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); | |
446 | ||
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); | |
450 | ||
451 | ||
452 | /****** Public Functions ****************************************************/ | |
453 | ||
454 | /*============================================================================ | |
455 | * Frame relay protocol initialization routine. | |
456 | * | |
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. | |
462 | * | |
463 | * Return: 0 o.k. | |
464 | * < 0 failure. | |
465 | */ | |
466 | int wpf_init(sdla_t *card, wandev_conf_t *conf) | |
467 | { | |
468 | ||
469 | int err; | |
470 | fr508_flags_t* flags; | |
471 | ||
472 | union | |
473 | { | |
474 | char str[80]; | |
475 | fr_conf_t cfg; | |
476 | } u; | |
477 | ||
478 | fr_buf_info_t* buf_info; | |
479 | int i; | |
480 | ||
481 | ||
482 | printk(KERN_INFO "\n"); | |
483 | ||
484 | /* Verify configuration ID */ | |
485 | if (conf->config_id != WANCONFIG_FR) { | |
486 | ||
487 | printk(KERN_INFO "%s: invalid configuration ID %u!\n", | |
488 | card->devname, conf->config_id); | |
489 | return -EINVAL; | |
490 | ||
491 | } | |
492 | ||
493 | /* Initialize protocol-specific fields of adapter data space */ | |
494 | switch (card->hw.fwid) { | |
495 | ||
496 | case SFID_FR508: | |
497 | card->mbox = (void*)(card->hw.dpmbase + | |
498 | FR508_MBOX_OFFS); | |
499 | card->flags = (void*)(card->hw.dpmbase + | |
500 | FR508_FLAG_OFFS); | |
501 | if(card->hw.type == SDLA_S514) { | |
502 | card->mbox += FR_MB_VECTOR; | |
503 | card->flags += FR_MB_VECTOR; | |
504 | } | |
505 | card->isr = &fr_isr; | |
506 | break; | |
507 | ||
508 | default: | |
509 | return -EINVAL; | |
510 | } | |
511 | ||
512 | flags = card->flags; | |
513 | ||
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. | |
518 | */ | |
519 | ||
520 | if (fr_read_version(card, NULL) || fr_read_version(card, u.str)) | |
521 | return -EIO; | |
522 | ||
523 | printk(KERN_INFO "%s: running frame relay firmware v%s\n", | |
524 | card->devname, u.str); | |
525 | ||
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; | |
531 | ||
532 | conf->bps = min_t(unsigned int, conf->bps, 2048000); | |
533 | ||
534 | /* Initialze the configuration structure sent to the board to zero */ | |
535 | memset(&u.cfg, 0, sizeof(u.cfg)); | |
536 | ||
537 | memset(card->u.f.dlci_to_dev_map, 0, sizeof(card->u.f.dlci_to_dev_map)); | |
538 | ||
539 | /* Configure adapter firmware */ | |
540 | ||
541 | u.cfg.mtu = conf->mtu; | |
542 | u.cfg.kbps = conf->bps / 1000; | |
543 | ||
544 | u.cfg.cir_fwd = u.cfg.cir_bwd = 16; | |
545 | u.cfg.bc_fwd = u.cfg.bc_bwd = 16; | |
546 | ||
547 | u.cfg.options = 0x0000; | |
548 | printk(KERN_INFO "%s: Global CIR enabled by Default\n", card->devname); | |
549 | ||
550 | switch (conf->u.fr.signalling) { | |
551 | ||
552 | case WANOPT_FR_ANSI: | |
553 | u.cfg.options = 0x0000; | |
554 | break; | |
555 | ||
556 | case WANOPT_FR_Q933: | |
557 | u.cfg.options |= 0x0200; | |
558 | break; | |
559 | ||
560 | case WANOPT_FR_LMI: | |
561 | u.cfg.options |= 0x0400; | |
562 | break; | |
563 | ||
564 | case WANOPT_NO: | |
565 | u.cfg.options |= 0x0800; | |
566 | break; | |
567 | default: | |
568 | printk(KERN_INFO "%s: Illegal Signalling option\n", | |
569 | card->wandev.name); | |
570 | return -EINVAL; | |
571 | } | |
572 | ||
573 | ||
574 | card->wandev.signalling = conf->u.fr.signalling; | |
575 | ||
576 | if (conf->station == WANOPT_CPE) { | |
577 | ||
578 | ||
579 | if (conf->u.fr.signalling == WANOPT_NO){ | |
580 | printk(KERN_INFO | |
581 | "%s: ERROR - For NO signalling, station must be set to Node!", | |
582 | card->devname); | |
583 | return -EINVAL; | |
584 | } | |
585 | ||
586 | u.cfg.station = 0; | |
587 | u.cfg.options |= 0x8000; /* auto config DLCI */ | |
588 | card->u.f.dlci_num = 0; | |
589 | ||
590 | } else { | |
591 | ||
592 | u.cfg.station = 1; /* switch emulation mode */ | |
593 | ||
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. | |
597 | */ | |
598 | ||
599 | card->u.f.dlci_num = min_t(unsigned int, max_t(unsigned int, conf->u.fr.dlci_num, 1), 100); | |
600 | ||
601 | for ( i = 0; i < card->u.f.dlci_num; i++) { | |
602 | ||
603 | card->u.f.node_dlci[i] = (unsigned short) | |
604 | conf->u.fr.dlci[i] ? conf->u.fr.dlci[i] : 16; | |
605 | ||
606 | } | |
607 | } | |
608 | ||
609 | if (conf->clocking == WANOPT_INTERNAL) | |
610 | u.cfg.port |= 0x0001; | |
611 | ||
612 | if (conf->interface == WANOPT_RS232) | |
613 | u.cfg.port |= 0x0002; | |
614 | ||
615 | if (conf->u.fr.t391) | |
616 | u.cfg.t391 = min_t(unsigned int, conf->u.fr.t391, 30); | |
617 | else | |
618 | u.cfg.t391 = 5; | |
619 | ||
620 | if (conf->u.fr.t392) | |
621 | u.cfg.t392 = min_t(unsigned int, conf->u.fr.t392, 30); | |
622 | else | |
623 | u.cfg.t392 = 15; | |
624 | ||
625 | if (conf->u.fr.n391) | |
626 | u.cfg.n391 = min_t(unsigned int, conf->u.fr.n391, 255); | |
627 | else | |
628 | u.cfg.n391 = 2; | |
629 | ||
630 | if (conf->u.fr.n392) | |
631 | u.cfg.n392 = min_t(unsigned int, conf->u.fr.n392, 10); | |
632 | else | |
633 | u.cfg.n392 = 3; | |
634 | ||
635 | if (conf->u.fr.n393) | |
636 | u.cfg.n393 = min_t(unsigned int, conf->u.fr.n393, 10); | |
637 | else | |
638 | u.cfg.n393 = 4; | |
639 | ||
640 | if (fr_configure(card, &u.cfg)) | |
641 | return -EIO; | |
642 | ||
643 | if (card->hw.type == SDLA_S514) { | |
644 | ||
645 | buf_info = (void*)(card->hw.dpmbase + FR_MB_VECTOR + | |
646 | FR508_RXBC_OFFS); | |
647 | ||
648 | card->rxmb = (void*)(buf_info->rse_next + card->hw.dpmbase); | |
649 | ||
650 | card->u.f.rxmb_base = | |
651 | (void*)(buf_info->rse_base + card->hw.dpmbase); | |
652 | ||
653 | card->u.f.rxmb_last = | |
654 | (void*)(buf_info->rse_base + | |
655 | (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) + | |
656 | card->hw.dpmbase); | |
657 | }else{ | |
658 | buf_info = (void*)(card->hw.dpmbase + FR508_RXBC_OFFS); | |
659 | ||
660 | card->rxmb = (void*)(buf_info->rse_next - | |
661 | FR_MB_VECTOR + card->hw.dpmbase); | |
662 | ||
663 | card->u.f.rxmb_base = | |
664 | (void*)(buf_info->rse_base - | |
665 | FR_MB_VECTOR + card->hw.dpmbase); | |
666 | ||
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); | |
671 | } | |
672 | ||
673 | card->u.f.rx_base = buf_info->buf_base; | |
674 | card->u.f.rx_top = buf_info->buf_top; | |
675 | ||
676 | card->u.f.tx_interrupts_pending = 0; | |
677 | ||
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; | |
683 | card->poll = NULL; | |
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; | |
693 | ||
694 | /* Intialize global statistics for a card */ | |
695 | init_global_statistics( card ); | |
696 | ||
697 | card->TracingEnabled = 0; | |
698 | ||
699 | /* Interrupt Test */ | |
700 | Intr_test_counter = 0; | |
701 | card->intr_mode = INTR_TEST_MODE; | |
702 | err = intr_test( card ); | |
703 | ||
704 | printk(KERN_INFO "%s: End of Interrupt Test rc=0x%x count=%i\n", | |
705 | card->devname,err,Intr_test_counter); | |
706 | ||
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"); | |
711 | err = -EIO; | |
712 | return err; | |
713 | } | |
714 | ||
715 | printk(KERN_INFO "%s: Interrupt Test Passed, Counter: %i\n", | |
716 | card->devname, Intr_test_counter); | |
717 | ||
718 | ||
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. | |
722 | */ | |
723 | ||
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. | |
728 | */ | |
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)) { | |
732 | return -EIO; | |
733 | } | |
734 | ||
735 | flags->imask &= ~(FR_INTR_TXRDY | FR_INTR_TIMER); | |
736 | ||
737 | if (fr_comm_enable(card)) { | |
738 | return -EIO; | |
739 | } | |
740 | wanpipe_set_state(card, WAN_CONNECTED); | |
741 | spin_lock_init(&card->u.f.if_send_lock); | |
742 | ||
743 | printk(KERN_INFO "\n"); | |
744 | ||
745 | return 0; | |
746 | } | |
747 | ||
748 | /******* WAN Device Driver Entry Points *************************************/ | |
749 | ||
750 | /*============================================================================ | |
751 | * Update device status & statistics. | |
752 | */ | |
753 | static int update(struct wan_device* wandev) | |
754 | { | |
755 | volatile sdla_t* card; | |
756 | unsigned long timeout; | |
757 | fr508_flags_t* flags; | |
758 | ||
759 | /* sanity checks */ | |
760 | if ((wandev == NULL) || (wandev->private == NULL)) | |
761 | return -EFAULT; | |
762 | ||
763 | if (wandev->state == WAN_UNCONFIGURED) | |
764 | return -ENODEV; | |
765 | ||
766 | card = wandev->private; | |
767 | flags = card->flags; | |
768 | ||
769 | ||
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; | |
773 | timeout = jiffies; | |
774 | for(;;) { | |
775 | if(card->u.f.update_comms_stats == 0) | |
776 | break; | |
a8178345 | 777 | if (time_after(jiffies, timeout + 1 * HZ)){ |
1da177e4 LT |
778 | card->u.f.update_comms_stats = 0; |
779 | return -EAGAIN; | |
780 | } | |
781 | } | |
782 | ||
783 | return 0; | |
784 | } | |
785 | ||
786 | /*============================================================================ | |
787 | * Create new logical channel. | |
788 | * This routine is called by the router when ROUTER_IFNEW IOCTL is being | |
789 | * handled. | |
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. | |
794 | * | |
795 | * Return: 0 o.k. | |
796 | * < 0 failure (channel will not be created) | |
797 | */ | |
798 | static int new_if(struct wan_device* wandev, struct net_device* dev, | |
799 | wanif_conf_t* conf) | |
800 | { | |
801 | sdla_t* card = wandev->private; | |
802 | fr_channel_t* chan; | |
803 | int dlci = 0; | |
804 | int err = 0; | |
805 | ||
806 | ||
807 | if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) { | |
808 | ||
809 | printk(KERN_INFO "%s: Invalid interface name!\n", | |
810 | card->devname); | |
811 | return -EINVAL; | |
812 | } | |
813 | ||
814 | /* allocate and initialize private data */ | |
815 | chan = kmalloc(sizeof(fr_channel_t), GFP_KERNEL); | |
816 | ||
817 | if (chan == NULL) | |
818 | return -ENOMEM; | |
819 | ||
820 | memset(chan, 0, sizeof(fr_channel_t)); | |
821 | strcpy(chan->name, conf->name); | |
822 | chan->card = card; | |
823 | ||
824 | /* verify media address */ | |
825 | if (is_digit(conf->addr[0])) { | |
826 | ||
827 | dlci = dec_to_uint(conf->addr, 0); | |
828 | ||
829 | if (dlci && (dlci <= HIGHEST_VALID_DLCI)) { | |
830 | ||
831 | chan->dlci = dlci; | |
832 | ||
833 | } else { | |
834 | ||
835 | printk(KERN_ERR | |
836 | "%s: Invalid DLCI %u on interface %s!\n", | |
837 | wandev->name, dlci, chan->name); | |
838 | err = -EINVAL; | |
839 | } | |
840 | ||
841 | } else { | |
842 | printk(KERN_ERR | |
843 | "%s: Invalid media address on interface %s!\n", | |
844 | wandev->name, chan->name); | |
845 | err = -EINVAL; | |
846 | } | |
847 | ||
848 | if ((chan->true_if_encoding = conf->true_if_encoding) == WANOPT_YES){ | |
849 | printk(KERN_INFO | |
850 | "%s: Enabling, true interface type encoding.\n", | |
851 | card->devname); | |
852 | } | |
853 | ||
854 | ||
855 | ||
856 | /* Setup wanpipe as a router (WANPIPE) even if it is | |
857 | * a bridged DLCI, or as an API | |
858 | */ | |
859 | if (strcmp(conf->usedby, "WANPIPE") == 0 || | |
860 | strcmp(conf->usedby, "BRIDGE") == 0 || | |
861 | strcmp(conf->usedby, "BRIDGE_N") == 0){ | |
862 | ||
863 | if(strcmp(conf->usedby, "WANPIPE") == 0){ | |
864 | chan->common.usedby = WANPIPE; | |
865 | ||
866 | printk(KERN_INFO "%s: Running in WANPIPE mode.\n", | |
867 | card->devname); | |
868 | ||
869 | }else if(strcmp(conf->usedby, "BRIDGE") == 0){ | |
870 | ||
871 | chan->common.usedby = BRIDGE; | |
872 | ||
873 | printk(KERN_INFO "%s: Running in WANPIPE (BRIDGE) mode.\n", | |
874 | card->devname); | |
875 | }else if( strcmp(conf->usedby, "BRIDGE_N") == 0 ){ | |
876 | ||
877 | chan->common.usedby = BRIDGE_NODE; | |
878 | ||
879 | printk(KERN_INFO "%s: Running in WANPIPE (BRIDGE_NODE) mode.\n", | |
880 | card->devname); | |
881 | } | |
882 | ||
883 | if (!err){ | |
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); | |
889 | printk(KERN_INFO | |
890 | "%s: Dynamic interface configuration enabled.\n", | |
891 | card->devname); | |
892 | } | |
893 | } | |
894 | ||
895 | } else if(strcmp(conf->usedby, "API") == 0){ | |
896 | ||
897 | chan->common.usedby = API; | |
898 | printk(KERN_INFO "%s: Running in API mode.\n", | |
899 | wandev->name); | |
900 | } | |
901 | ||
902 | if (err) { | |
903 | ||
904 | kfree(chan); | |
905 | return err; | |
906 | } | |
907 | ||
908 | /* place cir,be,bc and other channel specific information into the | |
909 | * chan structure | |
910 | */ | |
911 | if (conf->cir) { | |
912 | ||
913 | chan->cir = max_t(unsigned int, 1, | |
914 | min_t(unsigned int, conf->cir, 512)); | |
915 | chan->cir_status = CIR_ENABLED; | |
916 | ||
917 | ||
918 | /* If CIR is enabled, force BC to equal CIR | |
919 | * this solves number of potential problems if CIR is | |
920 | * set and BC is not | |
921 | */ | |
922 | chan->bc = chan->cir; | |
923 | ||
924 | if (conf->be){ | |
925 | chan->be = max_t(unsigned int, | |
926 | 0, min_t(unsigned int, conf->be, 511)); | |
927 | }else{ | |
928 | conf->be = 0; | |
929 | } | |
930 | ||
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); | |
935 | ||
936 | ||
937 | }else{ | |
938 | chan->cir_status = CIR_DISABLED; | |
939 | printk (KERN_INFO "%s: CIR disabled for DLCI %i\n", | |
940 | wandev->name,chan->dlci); | |
941 | } | |
942 | ||
943 | chan->mc = conf->mc; | |
944 | ||
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; | |
949 | }else{ | |
950 | printk(KERN_INFO "%s: Inverse ARP Support Disabled\n",card->devname); | |
951 | chan->inarp = INARP_NONE; | |
952 | chan->inarp_interval = 10; | |
953 | } | |
954 | ||
955 | ||
956 | chan->dlci_configured = DLCI_NOT_CONFIGURED; | |
957 | ||
958 | ||
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", | |
962 | card->devname); | |
963 | kfree(chan); | |
964 | return -EINVAL; | |
965 | }else{ | |
966 | chan->enable_IPX = WANOPT_NO; | |
967 | } | |
968 | ||
969 | if (conf->network_number){ | |
970 | chan->network_number = conf->network_number; | |
971 | }else{ | |
972 | chan->network_number = 0xDEADBEEF; | |
973 | } | |
974 | ||
975 | chan->route_flag = NO_ROUTE; | |
976 | ||
977 | init_chan_statistics(chan); | |
978 | ||
979 | chan->transmit_length = 0; | |
980 | ||
981 | /* prepare network device data space for registration */ | |
982 | strcpy(dev->name,chan->name); | |
983 | ||
984 | dev->init = &if_init; | |
985 | dev->priv = chan; | |
986 | ||
987 | /* Initialize FR Polling Task Queue | |
988 | * We need a poll routine for each network | |
989 | * interface. | |
990 | */ | |
991 | INIT_WORK(&chan->fr_poll_work, (void *)fr_poll, dev); | |
992 | ||
993 | init_timer(&chan->fr_arp_timer); | |
994 | chan->fr_arp_timer.data=(unsigned long)dev; | |
995 | chan->fr_arp_timer.function = fr_arp; | |
996 | ||
997 | wandev->new_if_cnt++; | |
998 | ||
999 | /* Tells us that if this interface is a | |
1000 | * gateway or not */ | |
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); | |
1004 | } | |
1005 | ||
1006 | /* M. Grant Patch Apr 28 2000 | |
1007 | * Disallow duplicate dlci configurations. */ | |
1008 | if (card->u.f.dlci_to_dev_map[chan->dlci] != NULL) { | |
1009 | kfree(chan); | |
1010 | return -EBUSY; | |
1011 | } | |
1012 | ||
1013 | /* Configure this dlci at a later date, when | |
1014 | * the interface comes up. i.e. when if_open() | |
1015 | * executes */ | |
1016 | set_bit(0,&chan->config_dlci); | |
1017 | ||
1018 | printk(KERN_INFO "\n"); | |
1019 | ||
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | /*============================================================================ | |
1024 | * Delete logical channel. | |
1025 | */ | |
1026 | static int del_if(struct wan_device* wandev, struct net_device* dev) | |
1027 | { | |
1028 | fr_channel_t* chan = dev->priv; | |
1029 | unsigned long smp_flags=0; | |
1030 | ||
1031 | /* This interface is dead, make sure the | |
1032 | * ARP timer is stopped */ | |
1033 | del_timer(&chan->fr_arp_timer); | |
1034 | ||
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); | |
1040 | ||
1041 | lock_adapter_irq(&wandev->lock, &smp_flags); | |
1042 | wandev->new_if_cnt--; | |
1043 | unlock_adapter_irq(&wandev->lock, &smp_flags); | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | ||
1049 | /*===================================================================== | |
1050 | * disable_comm | |
1051 | * | |
1052 | * Description: | |
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 | |
1057 | * | |
1058 | * Usage: | |
1059 | * Commnunications are disabled only on a card | |
1060 | * shutdown. | |
1061 | */ | |
1062 | ||
1063 | static void disable_comm (sdla_t *card) | |
1064 | { | |
1065 | printk(KERN_INFO "%s: Disabling Communications!\n", | |
1066 | card->devname); | |
1067 | fr_comm_disable(card); | |
1068 | } | |
1069 | ||
1070 | /****** WANPIPE-specific entry points ***************************************/ | |
1071 | ||
1072 | /*============================================================================ | |
1073 | * Execute adapter interface command. | |
1074 | */ | |
1075 | static int wpf_exec (struct sdla* card, void* u_cmd, void* u_data) | |
1076 | { | |
1077 | fr_mbox_t* mbox = card->mbox; | |
1078 | int retry = MAX_CMD_RETRY; | |
1079 | int err, len; | |
1080 | fr_cmd_t cmd; | |
1081 | ||
1082 | if(copy_from_user((void*)&cmd, u_cmd, sizeof(cmd))) | |
1083 | return -EFAULT; | |
1084 | ||
1085 | /* execute command */ | |
1086 | do | |
1087 | { | |
1088 | memcpy(&mbox->cmd, &cmd, sizeof(cmd)); | |
1089 | ||
1090 | if (cmd.length){ | |
1091 | if( copy_from_user((void*)&mbox->data, u_data, cmd.length)) | |
1092 | return -EFAULT; | |
1093 | } | |
1094 | ||
1095 | if (sdla_exec(mbox)) | |
1096 | err = mbox->cmd.result; | |
1097 | ||
1098 | else return -EIO; | |
1099 | ||
1100 | } while (err && retry-- && fr_event(card, err, mbox)); | |
1101 | ||
1102 | /* return result */ | |
1103 | if (copy_to_user(u_cmd, (void*)&mbox->cmd, sizeof(fr_cmd_t))) | |
1104 | return -EFAULT; | |
1105 | ||
1106 | len = mbox->cmd.length; | |
1107 | ||
1108 | if (len && u_data && !copy_to_user(u_data, (void*)&mbox->data, len)) | |
1109 | return -EFAULT; | |
1110 | return 0; | |
1111 | } | |
1112 | ||
1113 | /****** Network Device Interface ********************************************/ | |
1114 | ||
1115 | /*============================================================================ | |
1116 | * Initialize Linux network interface. | |
1117 | * | |
1118 | * This routine is called only once for each interface, during Linux network | |
1119 | * interface registration. Returning anything but zero will fail interface | |
1120 | * registration. | |
1121 | */ | |
1122 | static int if_init(struct net_device* dev) | |
1123 | { | |
1124 | fr_channel_t* chan = dev->priv; | |
1125 | sdla_t* card = chan->card; | |
1126 | struct wan_device* wandev = &card->wandev; | |
1127 | ||
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; | |
1137 | ||
1138 | if (chan->common.usedby == WANPIPE || chan->common.usedby == API){ | |
1139 | ||
1140 | /* Initialize media-specific parameters */ | |
1141 | if (chan->true_if_encoding){ | |
1142 | dev->type = ARPHRD_DLCI; /* This breaks tcpdump */ | |
1143 | }else{ | |
1144 | dev->type = ARPHRD_PPP; /* ARP h/w type */ | |
1145 | } | |
1146 | ||
1147 | dev->flags |= IFF_POINTOPOINT; | |
1148 | dev->flags |= IFF_NOARP; | |
1149 | ||
1150 | /* Enable Multicast addressing */ | |
1151 | if (chan->mc == WANOPT_YES){ | |
1152 | dev->flags |= IFF_MULTICAST; | |
1153 | } | |
1154 | ||
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. | |
1159 | */ | |
1160 | if(chan->common.usedby == API) { | |
1161 | dev->mtu += (sizeof(api_tx_hdr_t) - FR_HEADER_LEN); | |
1162 | } | |
1163 | ||
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); | |
1167 | ||
1168 | /* Set transmit buffer queue length */ | |
1169 | dev->tx_queue_len = 100; | |
1170 | ||
1171 | }else{ | |
1172 | ||
1173 | /* Setup the interface for Bridging */ | |
1174 | int hw_addr=0; | |
1175 | ether_setup(dev); | |
1176 | ||
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; | |
1181 | } | |
1182 | ||
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); | |
1190 | ||
1191 | return 0; | |
1192 | } | |
1193 | ||
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 | |
1198 | * | |
1199 | * Return 0 if O.k. or errno. | |
1200 | */ | |
1201 | static int if_open(struct net_device* dev) | |
1202 | { | |
1203 | fr_channel_t* chan = dev->priv; | |
1204 | sdla_t* card = chan->card; | |
1205 | int err = 0; | |
1206 | struct timeval tv; | |
1207 | ||
1208 | if (netif_running(dev)) | |
1209 | return -EBUSY; | |
1210 | ||
1211 | /* Initialize the task queue */ | |
1212 | chan->tq_working=0; | |
1213 | ||
1214 | INIT_WORK(&chan->common.wanpipe_work, (void *)fr_bh, dev); | |
1215 | ||
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); | |
1220 | ||
1221 | netif_start_queue(dev); | |
1222 | ||
1223 | wanpipe_open(card); | |
1224 | do_gettimeofday( &tv ); | |
1225 | chan->router_start_time = tv.tv_sec; | |
1226 | ||
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); | |
1231 | } | |
1232 | ||
1233 | return err; | |
1234 | } | |
1235 | ||
1236 | /*============================================================================ | |
1237 | * Close network interface. | |
1238 | * o if this is the last open, then disable communications and interrupts. | |
1239 | * o reset flags. | |
1240 | */ | |
1241 | static int if_close(struct net_device* dev) | |
1242 | { | |
1243 | fr_channel_t* chan = dev->priv; | |
1244 | sdla_t* card = chan->card; | |
1245 | ||
1246 | if (chan->inarp == INARP_CONFIGURED) { | |
1247 | chan->inarp = INARP_REQUEST; | |
1248 | } | |
1249 | ||
1250 | netif_stop_queue(dev); | |
1251 | wanpipe_close(card); | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | /*============================================================================ | |
1257 | * Re-build media header. | |
1258 | * | |
1259 | * Return: 1 physical address resolved. | |
1260 | * 0 physical address not resolved | |
1261 | */ | |
1262 | static int if_rebuild_hdr (struct sk_buff* skb) | |
1263 | { | |
1264 | struct net_device *dev = skb->dev; | |
1265 | fr_channel_t* chan = dev->priv; | |
1266 | sdla_t* card = chan->card; | |
1267 | ||
1268 | printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n", | |
1269 | card->devname, dev->name); | |
1270 | return 1; | |
1271 | } | |
1272 | ||
1273 | /*============================================================================ | |
1274 | * Handle transmit timeout event from netif watchdog | |
1275 | */ | |
1276 | static void if_tx_timeout(struct net_device *dev) | |
1277 | { | |
1278 | fr_channel_t* chan = dev->priv; | |
1279 | sdla_t *card = chan->card; | |
1280 | ||
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. | |
1285 | */ | |
1286 | ||
1287 | chan->drvstats_if_send.if_send_tbusy++; | |
1288 | ++chan->ifstats.collisions; | |
1289 | ||
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); | |
1294 | ||
1295 | } | |
1296 | ||
1297 | ||
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 | |
1307 | * | |
1308 | * Return: 0 complete (socket buffer must be freed) | |
1309 | * non-0 packet may be re-transmitted (tbusy must be set) | |
1310 | * | |
1311 | * Notes: | |
1312 | * 1. This routine is called either by the protocol stack or by the "net | |
1313 | * bottom half" (with interrupts enabled). | |
1314 | * | |
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. | |
1318 | */ | |
1319 | static int if_send(struct sk_buff* skb, struct net_device* dev) | |
1320 | { | |
1321 | fr_channel_t* chan = dev->priv; | |
1322 | sdla_t* card = chan->card; | |
1323 | int err; | |
1324 | unsigned char *sendpacket; | |
1325 | fr508_flags_t* adptr_flags = card->flags; | |
1326 | int udp_type; | |
1327 | long delay_tx_queued = 0; | |
1328 | unsigned long smp_flags=0; | |
1329 | unsigned char attr = 0; | |
1330 | ||
1331 | chan->drvstats_if_send.if_send_entry++; | |
1332 | ||
1333 | netif_stop_queue(dev); | |
1334 | ||
1335 | if (skb == NULL) { | |
1336 | /* if we get here, some higher layer thinks we've missed an | |
1337 | * tx-done interrupt. | |
1338 | */ | |
1339 | printk(KERN_INFO "%s: interface %s got kicked!\n", | |
1340 | card->devname, dev->name); | |
1341 | chan->drvstats_if_send.if_send_skb_null ++; | |
1342 | ||
1343 | netif_wake_queue(dev); | |
1344 | return 0; | |
1345 | } | |
1346 | ||
1347 | /* If a peripheral task is running just drop packets */ | |
1348 | if (test_bit(PERI_CRIT, &card->wandev.critical)){ | |
1349 | ||
1350 | printk(KERN_INFO "%s: Critical in if_send(): Peripheral running!\n", | |
1351 | card->devname); | |
1352 | ||
1353 | dev_kfree_skb_any(skb); | |
1354 | netif_start_queue(dev); | |
1355 | return 0; | |
1356 | } | |
1357 | ||
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". | |
1362 | */ | |
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); | |
1368 | return 1; | |
1369 | } | |
1370 | clear_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical); | |
1371 | ||
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; | |
1379 | ||
1380 | dev_kfree_skb_any(skb); | |
1381 | netif_start_queue(dev); | |
1382 | return 0; | |
1383 | } | |
1384 | ||
1385 | sendpacket = skb->data; | |
1386 | ||
1387 | udp_type = udp_pkt_type(skb, card); | |
1388 | ||
1389 | if(udp_type != UDP_INVALID_TYPE) { | |
1390 | if(store_udp_mgmt_pkt(udp_type, UDP_PKT_FRM_STACK, card, skb, | |
1391 | chan->dlci)) { | |
1392 | adptr_flags->imask |= FR_INTR_TIMER; | |
1393 | if (udp_type == UDP_FPIPE_TYPE){ | |
1394 | chan->drvstats_if_send. | |
1395 | if_send_PIPE_request ++; | |
1396 | } | |
1397 | } | |
1398 | netif_start_queue(dev); | |
1399 | return 0; | |
1400 | } | |
1401 | ||
1402 | //FIXME: can we do better than sendpacket[2]? | |
1403 | if ((chan->common.usedby == WANPIPE) && (sendpacket[2] == 0x45)) { | |
1404 | ||
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); | |
1412 | return 0; | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | ||
1417 | /* Lock the S514/S508 card: SMP Supported */ | |
1418 | s508_s514_lock(card,&smp_flags); | |
1419 | ||
1420 | if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) { | |
1421 | ||
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", | |
1425 | card->devname); | |
1426 | goto if_send_start_and_exit; | |
1427 | } | |
1428 | ||
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; | |
1434 | ||
1435 | ||
1436 | goto if_send_start_and_exit; | |
1437 | ||
1438 | }else{ | |
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)); | |
1445 | } | |
1446 | } | |
1447 | ||
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; | |
1452 | ||
1453 | } else if (chan->common.state != WAN_CONNECTED) { | |
1454 | chan->drvstats_if_send.if_send_dlci_disconnected ++; | |
1455 | ||
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; | |
1459 | ||
1460 | ++chan->ifstats.tx_dropped; | |
1461 | ++card->wandev.stats.tx_dropped; | |
1462 | ||
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); | |
1467 | } | |
1468 | chan->drvstats_if_send.if_send_no_bfrs++; | |
1469 | ||
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; | |
1474 | ||
1475 | } else if (test_bit(ARP_CRIT,&card->wandev.critical)){ | |
1476 | /* We are trying to send an ARP Packet, block IP data until | |
1477 | * ARP is sent */ | |
1478 | ++chan->ifstats.tx_dropped; | |
1479 | ++card->wandev.stats.tx_dropped; | |
1480 | ||
1481 | } else { | |
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) { | |
1488 | ||
1489 | if( chan->enable_IPX ) { | |
1490 | switch_net_numbers(sendpacket, | |
1491 | chan->network_number, 0); | |
1492 | } else { | |
1493 | //FIXME: Take this out when IPX is fixed | |
1494 | printk(KERN_INFO | |
1495 | "%s: WARNING: Unsupported IPX data in send, packet dropped\n", | |
1496 | card->devname); | |
1497 | } | |
1498 | ||
1499 | }else{ | |
1500 | err = fr_send_data_header(card, chan->dlci, attr, skb->len, skb->data, chan->fr_header_len); | |
1501 | if (err) { | |
1502 | switch(err) { | |
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); | |
1507 | } | |
1508 | chan->drvstats_if_send. | |
1509 | if_send_adptr_bfrs_full ++; | |
1510 | break; | |
1511 | ||
1512 | case FRRES_TOO_LONG: | |
1513 | if (net_ratelimit()){ | |
1514 | printk(KERN_INFO | |
1515 | "%s: Error: Frame too long, transmission failed %i\n", | |
1516 | card->devname, (unsigned int)skb->len); | |
1517 | } | |
1518 | /* Drop down to default */ | |
1519 | default: | |
1520 | chan->drvstats_if_send. | |
1521 | if_send_dlci_disconnected ++; | |
1522 | ++chan->ifstats.tx_dropped; | |
1523 | ++card->wandev.stats.tx_dropped; | |
1524 | break; | |
1525 | } | |
1526 | } else { | |
1527 | chan->drvstats_if_send. | |
1528 | if_send_bfr_passed_to_adptr++; | |
1529 | ++chan->ifstats.tx_packets; | |
1530 | ++card->wandev.stats.tx_packets; | |
1531 | ||
1532 | chan->ifstats.tx_bytes += skb->len; | |
1533 | card->wandev.stats.tx_bytes += skb->len; | |
1534 | dev->trans_start = jiffies; | |
1535 | } | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | if_send_start_and_exit: | |
1540 | ||
1541 | netif_start_queue(dev); | |
1542 | ||
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); | |
1548 | }else{ | |
1549 | adptr_flags->imask |= FR_INTR_TXRDY; | |
1550 | card->u.f.tx_interrupts_pending ++; | |
1551 | } | |
1552 | ||
1553 | clear_bit(SEND_CRIT, (void*)&card->wandev.critical); | |
1554 | ||
1555 | s508_s514_unlock(card,&smp_flags); | |
1556 | ||
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | ||
1561 | ||
1562 | /*============================================================================ | |
1563 | * Setup so that a frame can be transmitted on the occurrence of a transmit | |
1564 | * interrupt. | |
1565 | */ | |
1566 | static int setup_for_delayed_transmit(struct net_device* dev, | |
1567 | struct sk_buff *skb) | |
1568 | { | |
1569 | fr_channel_t* chan = dev->priv; | |
1570 | sdla_t* card = chan->card; | |
1571 | fr_dlci_interface_t* dlci_interface; | |
1572 | int len = skb->len; | |
1573 | ||
1574 | /* Check that the dlci is properly configured, | |
1575 | * before using tx interrupt */ | |
1576 | if (!chan->dlci_int_interface){ | |
1577 | if (net_ratelimit()){ | |
1578 | printk(KERN_INFO | |
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", | |
1582 | card->devname); | |
1583 | } | |
1584 | return 1; | |
1585 | } | |
1586 | ||
1587 | dlci_interface = chan->dlci_int_interface; | |
1588 | ||
1589 | if(chan->transmit_length) { | |
1590 | printk(KERN_INFO "%s: Big mess in setup_for_del...\n", | |
1591 | card->devname); | |
1592 | return 1; | |
1593 | } | |
1594 | ||
1595 | if(len > FR_MAX_NO_DATA_BYTES_IN_FRAME) { | |
1596 | //FIXME: increment some statistic */ | |
1597 | return 1; | |
1598 | } | |
1599 | ||
1600 | skb_unlink(skb); | |
1601 | ||
1602 | chan->transmit_length = len; | |
1603 | chan->delay_skb = skb; | |
1604 | ||
1605 | dlci_interface->gen_interrupt |= FR_INTR_TXRDY; | |
1606 | dlci_interface->packet_length = len; | |
1607 | ||
1608 | /* Turn on TX interrupt at the end of if_send */ | |
1609 | return 0; | |
1610 | } | |
1611 | ||
1612 | ||
1613 | /*============================================================================ | |
1614 | * Check to see if the packet to be transmitted contains a broadcast or | |
1615 | * multicast source IP address. | |
1616 | * Return 0 if not broadcast/multicast address, otherwise return 1. | |
1617 | */ | |
1618 | ||
1619 | static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev, | |
1620 | struct sk_buff *skb) | |
1621 | { | |
1622 | u32 src_ip_addr; | |
1623 | u32 broadcast_ip_addr = 0; | |
1624 | struct in_device *in_dev; | |
1625 | fr_channel_t* chan = dev->priv; | |
1626 | ||
1627 | /* read the IP source address from the outgoing packet */ | |
1628 | src_ip_addr = *(u32 *)(skb->data + 14); | |
1629 | ||
1630 | /* read the IP broadcast address for the device */ | |
1631 | in_dev = dev->ip_ptr; | |
1632 | if(in_dev != NULL) { | |
1633 | struct in_ifaddr *ifa= in_dev->ifa_list; | |
1634 | if(ifa != NULL) | |
1635 | broadcast_ip_addr = ifa->ifa_broadcast; | |
1636 | else | |
1637 | return 0; | |
1638 | } | |
1639 | ||
1640 | /* check if the IP Source Address is a Broadcast address */ | |
1641 | if((dev->flags & IFF_BROADCAST) && (src_ip_addr == broadcast_ip_addr)) { | |
1642 | printk(KERN_INFO | |
1643 | "%s: Broadcast Source Address silently discarded\n", | |
1644 | card->devname); | |
1645 | return 1; | |
1646 | } | |
1647 | ||
1648 | /* check if the IP Source Address is a Multicast address */ | |
1649 | if((chan->mc == WANOPT_NO) && (ntohl(src_ip_addr) >= 0xE0000001) && | |
1650 | (ntohl(src_ip_addr) <= 0xFFFFFFFE)) { | |
1651 | printk(KERN_INFO | |
1652 | "%s: Multicast Source Address silently discarded\n", | |
1653 | card->devname); | |
1654 | return 1; | |
1655 | } | |
1656 | ||
1657 | return 0; | |
1658 | } | |
1659 | ||
1660 | /*============================================================================ | |
1661 | * Reply to UDP Management system. | |
1662 | * Return nothing. | |
1663 | */ | |
1664 | static int reply_udp( unsigned char *data, unsigned int mbox_len ) | |
1665 | { | |
1666 | unsigned short len, udp_length, temp, ip_length; | |
1667 | unsigned long ip_temp; | |
1668 | int even_bound = 0; | |
1669 | ||
1670 | ||
1671 | fr_udp_pkt_t *fr_udp_pkt = (fr_udp_pkt_t *)data; | |
1672 | ||
1673 | /* Set length of packet */ | |
1674 | len = //sizeof(fr_encap_hdr_t)+ | |
1675 | sizeof(ip_pkt_t)+ | |
1676 | sizeof(udp_pkt_t)+ | |
1677 | sizeof(wp_mgmt_t)+ | |
1678 | sizeof(cblock_t)+ | |
1679 | mbox_len; | |
1680 | ||
1681 | ||
1682 | /* fill in UDP reply */ | |
1683 | fr_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY; | |
1684 | ||
1685 | /* fill in UDP length */ | |
1686 | udp_length = sizeof(udp_pkt_t)+ | |
1687 | sizeof(wp_mgmt_t)+ | |
1688 | sizeof(cblock_t)+ | |
1689 | mbox_len; | |
1690 | ||
1691 | ||
1692 | /* put it on an even boundary */ | |
1693 | if ( udp_length & 0x0001 ) { | |
1694 | udp_length += 1; | |
1695 | len += 1; | |
1696 | even_bound = 1; | |
1697 | } | |
1698 | ||
1699 | temp = (udp_length<<8)|(udp_length>>8); | |
1700 | fr_udp_pkt->udp_pkt.udp_length = temp; | |
1701 | ||
1702 | /* swap UDP ports */ | |
1703 | temp = fr_udp_pkt->udp_pkt.udp_src_port; | |
1704 | fr_udp_pkt->udp_pkt.udp_src_port = | |
1705 | fr_udp_pkt->udp_pkt.udp_dst_port; | |
1706 | fr_udp_pkt->udp_pkt.udp_dst_port = temp; | |
1707 | ||
1708 | ||
1709 | ||
1710 | /* add UDP pseudo header */ | |
1711 | temp = 0x1100; | |
1712 | *((unsigned short *) | |
1713 | (fr_udp_pkt->data+mbox_len+even_bound)) = temp; | |
1714 | temp = (udp_length<<8)|(udp_length>>8); | |
1715 | *((unsigned short *) | |
1716 | (fr_udp_pkt->data+mbox_len+even_bound+2)) = temp; | |
1717 | ||
1718 | /* calculate UDP checksum */ | |
1719 | fr_udp_pkt->udp_pkt.udp_checksum = 0; | |
1720 | ||
1721 | fr_udp_pkt->udp_pkt.udp_checksum = | |
1722 | calc_checksum(&data[UDP_OFFSET/*+sizeof(fr_encap_hdr_t)*/], | |
1723 | udp_length+UDP_OFFSET); | |
1724 | ||
1725 | /* fill in IP length */ | |
1726 | ip_length = udp_length + sizeof(ip_pkt_t); | |
1727 | temp = (ip_length<<8)|(ip_length>>8); | |
1728 | fr_udp_pkt->ip_pkt.total_length = temp; | |
1729 | ||
1730 | /* swap IP addresses */ | |
1731 | ip_temp = fr_udp_pkt->ip_pkt.ip_src_address; | |
1732 | fr_udp_pkt->ip_pkt.ip_src_address = | |
1733 | fr_udp_pkt->ip_pkt.ip_dst_address; | |
1734 | fr_udp_pkt->ip_pkt.ip_dst_address = ip_temp; | |
1735 | ||
1736 | ||
1737 | /* fill in IP checksum */ | |
1738 | fr_udp_pkt->ip_pkt.hdr_checksum = 0; | |
1739 | fr_udp_pkt->ip_pkt.hdr_checksum = | |
1740 | calc_checksum(&data[/*sizeof(fr_encap_hdr_t)*/0], | |
1741 | sizeof(ip_pkt_t)); | |
1742 | ||
1743 | return len; | |
1744 | } /* reply_udp */ | |
1745 | ||
1746 | unsigned short calc_checksum (char *data, int len) | |
1747 | { | |
1748 | unsigned short temp; | |
1749 | unsigned long sum=0; | |
1750 | int i; | |
1751 | ||
1752 | for( i = 0; i <len; i+=2 ) { | |
1753 | memcpy(&temp,&data[i],2); | |
1754 | sum += (unsigned long)temp; | |
1755 | } | |
1756 | ||
1757 | while (sum >> 16 ) { | |
1758 | sum = (sum & 0xffffUL) + (sum >> 16); | |
1759 | } | |
1760 | ||
1761 | temp = (unsigned short)sum; | |
1762 | temp = ~temp; | |
1763 | ||
1764 | if( temp == 0 ) | |
1765 | temp = 0xffff; | |
1766 | ||
1767 | return temp; | |
1768 | } | |
1769 | ||
1770 | /* | |
1771 | If incoming is 0 (outgoing)- if the net numbers is ours make it 0 | |
1772 | if incoming is 1 - if the net number is 0 make it ours | |
1773 | ||
1774 | */ | |
1775 | static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, unsigned char incoming) | |
1776 | { | |
1777 | unsigned long pnetwork_number; | |
1778 | ||
1779 | pnetwork_number = (unsigned long)((sendpacket[14] << 24) + | |
1780 | (sendpacket[15] << 16) + (sendpacket[16] << 8) + | |
1781 | sendpacket[17]); | |
1782 | ||
1783 | if (!incoming) { | |
1784 | /* If the destination network number is ours, make it 0 */ | |
1785 | if( pnetwork_number == network_number) { | |
1786 | sendpacket[14] = sendpacket[15] = sendpacket[16] = | |
1787 | sendpacket[17] = 0x00; | |
1788 | } | |
1789 | } else { | |
1790 | /* If the incoming network is 0, make it ours */ | |
1791 | if( pnetwork_number == 0) { | |
1792 | sendpacket[14] = (unsigned char)(network_number >> 24); | |
1793 | sendpacket[15] = (unsigned char)((network_number & | |
1794 | 0x00FF0000) >> 16); | |
1795 | sendpacket[16] = (unsigned char)((network_number & | |
1796 | 0x0000FF00) >> 8); | |
1797 | sendpacket[17] = (unsigned char)(network_number & | |
1798 | 0x000000FF); | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | ||
1803 | pnetwork_number = (unsigned long)((sendpacket[26] << 24) + | |
1804 | (sendpacket[27] << 16) + (sendpacket[28] << 8) + | |
1805 | sendpacket[29]); | |
1806 | ||
1807 | if( !incoming ) { | |
1808 | /* If the source network is ours, make it 0 */ | |
1809 | if( pnetwork_number == network_number) { | |
1810 | sendpacket[26] = sendpacket[27] = sendpacket[28] = | |
1811 | sendpacket[29] = 0x00; | |
1812 | } | |
1813 | } else { | |
1814 | /* If the source network is 0, make it ours */ | |
1815 | if( pnetwork_number == 0 ) { | |
1816 | sendpacket[26] = (unsigned char)(network_number >> 24); | |
1817 | sendpacket[27] = (unsigned char)((network_number & | |
1818 | 0x00FF0000) >> 16); | |
1819 | sendpacket[28] = (unsigned char)((network_number & | |
1820 | 0x0000FF00) >> 8); | |
1821 | sendpacket[29] = (unsigned char)(network_number & | |
1822 | 0x000000FF); | |
1823 | } | |
1824 | } | |
1825 | } /* switch_net_numbers */ | |
1826 | ||
1827 | /*============================================================================ | |
1828 | * Get ethernet-style interface statistics. | |
1829 | * Return a pointer to struct enet_statistics. | |
1830 | */ | |
1831 | static struct net_device_stats *if_stats(struct net_device *dev) | |
1832 | { | |
1833 | fr_channel_t* chan = dev->priv; | |
1834 | ||
1835 | if(chan == NULL) | |
1836 | return NULL; | |
1837 | ||
1838 | return &chan->ifstats; | |
1839 | } | |
1840 | ||
1841 | /****** Interrupt Handlers **************************************************/ | |
1842 | ||
1843 | /*============================================================================ | |
1844 | * fr_isr: S508 frame relay interrupt service routine. | |
1845 | * | |
1846 | * Description: | |
1847 | * Frame relay main interrupt service route. This | |
1848 | * function check the interrupt type and takes | |
1849 | * the appropriate action. | |
1850 | */ | |
1851 | static void fr_isr (sdla_t* card) | |
1852 | { | |
1853 | fr508_flags_t* flags = card->flags; | |
1854 | char *ptr = &flags->iflag; | |
1855 | int i,err; | |
1856 | fr_mbox_t* mbox = card->mbox; | |
1857 | ||
1858 | /* This flag prevents nesting of interrupts. See sdla_isr() routine | |
1859 | * in sdlamain.c. */ | |
1860 | card->in_isr = 1; | |
1861 | ||
1862 | ++card->statistics.isr_entry; | |
1863 | ||
1864 | ||
1865 | /* All peripheral (configuraiton, re-configuration) events | |
1866 | * take presidence over the ISR. Thus, retrigger */ | |
1867 | if (test_bit(PERI_CRIT, (void*)&card->wandev.critical)) { | |
1868 | ++card->statistics.isr_already_critical; | |
1869 | goto fr_isr_exit; | |
1870 | } | |
1871 | ||
1872 | if(card->hw.type != SDLA_S514) { | |
1873 | if (test_bit(SEND_CRIT, (void*)&card->wandev.critical)) { | |
1874 | printk(KERN_INFO "%s: Critical while in ISR: If Send Running!\n", | |
1875 | card->devname); | |
1876 | ++card->statistics.isr_already_critical; | |
1877 | goto fr_isr_exit; | |
1878 | } | |
1879 | } | |
1880 | ||
1881 | switch (flags->iflag) { | |
1882 | ||
1883 | case FR_INTR_RXRDY: /* receive interrupt */ | |
1884 | ++card->statistics.isr_rx; | |
1885 | rx_intr(card); | |
1886 | break; | |
1887 | ||
1888 | ||
1889 | case FR_INTR_TXRDY: /* transmit interrupt */ | |
1890 | ++ card->statistics.isr_tx; | |
1891 | tx_intr(card); | |
1892 | break; | |
1893 | ||
1894 | case FR_INTR_READY: | |
1895 | Intr_test_counter++; | |
1896 | ++card->statistics.isr_intr_test; | |
1897 | break; | |
1898 | ||
1899 | case FR_INTR_DLC: /* Event interrupt occurred */ | |
1900 | mbox->cmd.command = FR_READ_STATUS; | |
1901 | mbox->cmd.length = 0; | |
1902 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
1903 | if (err) | |
1904 | fr_event(card, err, mbox); | |
1905 | break; | |
1906 | ||
1907 | case FR_INTR_TIMER: /* Timer interrupt */ | |
1908 | timer_intr(card); | |
1909 | break; | |
1910 | ||
1911 | default: | |
1912 | ++card->statistics.isr_spurious; | |
1913 | spur_intr(card); | |
1914 | printk(KERN_INFO "%s: Interrupt Type 0x%02X!\n", | |
1915 | card->devname, flags->iflag); | |
1916 | ||
1917 | printk(KERN_INFO "%s: ID Bytes = ",card->devname); | |
1918 | for(i = 0; i < 8; i ++) | |
1919 | printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i)); | |
1920 | printk(KERN_INFO "\n"); | |
1921 | ||
1922 | break; | |
1923 | } | |
1924 | ||
1925 | fr_isr_exit: | |
1926 | ||
1927 | card->in_isr = 0; | |
1928 | flags->iflag = 0; | |
1929 | return; | |
1930 | } | |
1931 | ||
1932 | ||
1933 | ||
1934 | /*=========================================================== | |
1935 | * rx_intr Receive interrupt handler. | |
1936 | * | |
1937 | * Description | |
1938 | * Upon receiveing an interrupt: | |
1939 | * 1. Check that the firmware is in sync with | |
1940 | * the driver. | |
1941 | * 2. Find an appropriate network interface | |
1942 | * based on the received dlci number. | |
1943 | * 3. Check that the netowrk interface exists | |
1944 | * and that it's setup properly. | |
1945 | * 4. Copy the data into an skb buffer. | |
1946 | * 5. Check the packet type and take | |
1947 | * appropriate acton: UPD, API, ARP or Data. | |
1948 | */ | |
1949 | ||
1950 | static void rx_intr (sdla_t* card) | |
1951 | { | |
1952 | fr_rx_buf_ctl_t* frbuf = card->rxmb; | |
1953 | fr508_flags_t* flags = card->flags; | |
1954 | fr_channel_t* chan; | |
1955 | char *ptr = &flags->iflag; | |
1956 | struct sk_buff* skb; | |
1957 | struct net_device* dev; | |
1958 | void* buf; | |
1959 | unsigned dlci, len, offs, len_incl_hdr; | |
1960 | int i, udp_type; | |
1961 | ||
1962 | ||
1963 | /* Check that firmware buffers are in sync */ | |
1964 | if (frbuf->flag != 0x01) { | |
1965 | ||
1966 | printk(KERN_INFO | |
1967 | "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n", | |
1968 | card->devname, (unsigned)frbuf, frbuf->flag); | |
1969 | ||
1970 | printk(KERN_INFO "%s: ID Bytes = ",card->devname); | |
1971 | for(i = 0; i < 8; i ++) | |
1972 | printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i)); | |
1973 | printk(KERN_INFO "\n"); | |
1974 | ||
1975 | ++card->statistics.rx_intr_corrupt_rx_bfr; | |
1976 | ||
1977 | /* Bug Fix: Mar 6 2000 | |
1978 | * If we get a corrupted mailbox, it means that driver | |
1979 | * is out of sync with the firmware. There is no recovery. | |
1980 | * If we don't turn off all interrupts for this card | |
1981 | * the machine will crash. | |
1982 | */ | |
1983 | printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname); | |
1984 | printk(KERN_INFO "Please contact Sangoma Technologies !\n"); | |
1985 | fr_set_intr_mode(card, 0, 0, 0); | |
1986 | return; | |
1987 | } | |
1988 | ||
1989 | len = frbuf->length; | |
1990 | dlci = frbuf->dlci; | |
1991 | offs = frbuf->offset; | |
1992 | ||
1993 | /* Find the network interface for this packet */ | |
1994 | dev = find_channel(card, dlci); | |
1995 | ||
1996 | ||
1997 | /* Check that the network interface is active and | |
1998 | * properly setup */ | |
1999 | if (dev == NULL) { | |
2000 | if( net_ratelimit()) { | |
2001 | printk(KERN_INFO "%s: received data on unconfigured DLCI %d!\n", | |
2002 | card->devname, dlci); | |
2003 | } | |
2004 | ++card->statistics.rx_intr_on_orphaned_DLCI; | |
2005 | ++card->wandev.stats.rx_dropped; | |
2006 | goto rx_done; | |
2007 | } | |
2008 | ||
2009 | if ((chan = dev->priv) == NULL){ | |
2010 | if( net_ratelimit()) { | |
2011 | printk(KERN_INFO "%s: received data on unconfigured DLCI %d!\n", | |
2012 | card->devname, dlci); | |
2013 | } | |
2014 | ++card->statistics.rx_intr_on_orphaned_DLCI; | |
2015 | ++card->wandev.stats.rx_dropped; | |
2016 | goto rx_done; | |
2017 | } | |
2018 | ||
2019 | skb = dev_alloc_skb(len); | |
2020 | ||
2021 | if (!netif_running(dev) || (skb == NULL)){ | |
2022 | ||
2023 | ++chan->ifstats.rx_dropped; | |
2024 | ||
2025 | if(skb == NULL) { | |
2026 | if (net_ratelimit()) { | |
2027 | printk(KERN_INFO | |
2028 | "%s: no socket buffers available!\n", | |
2029 | card->devname); | |
2030 | } | |
2031 | chan->drvstats_rx_intr.rx_intr_no_socket ++; | |
2032 | } | |
2033 | ||
2034 | if (!netif_running(dev)){ | |
2035 | chan->drvstats_rx_intr. | |
2036 | rx_intr_dev_not_started ++; | |
2037 | if (skb){ | |
2038 | dev_kfree_skb_any(skb); | |
2039 | } | |
2040 | } | |
2041 | goto rx_done; | |
2042 | } | |
2043 | ||
2044 | /* Copy data from the board into the socket buffer */ | |
2045 | if ((offs + len) > card->u.f.rx_top + 1) { | |
2046 | unsigned tmp = card->u.f.rx_top - offs + 1; | |
2047 | ||
2048 | buf = skb_put(skb, tmp); | |
2049 | sdla_peek(&card->hw, offs, buf, tmp); | |
2050 | offs = card->u.f.rx_base; | |
2051 | len -= tmp; | |
2052 | } | |
2053 | ||
2054 | buf = skb_put(skb, len); | |
2055 | sdla_peek(&card->hw, offs, buf, len); | |
2056 | ||
2057 | ||
2058 | /* We got the packet from the bard. | |
2059 | * Check the packet type and take appropriate action */ | |
2060 | ||
2061 | udp_type = udp_pkt_type( skb, card ); | |
2062 | ||
2063 | if(udp_type != UDP_INVALID_TYPE) { | |
2064 | ||
2065 | /* UDP Debug packet received, store the | |
2066 | * packet and handle it in timer interrupt */ | |
2067 | ||
2068 | skb_pull(skb, 1); | |
2069 | if (wanrouter_type_trans(skb, dev)){ | |
2070 | if(store_udp_mgmt_pkt(udp_type,UDP_PKT_FRM_NETWORK,card,skb,dlci)){ | |
2071 | ||
2072 | flags->imask |= FR_INTR_TIMER; | |
2073 | ||
2074 | if (udp_type == UDP_FPIPE_TYPE){ | |
2075 | ++chan->drvstats_rx_intr.rx_intr_PIPE_request; | |
2076 | } | |
2077 | } | |
2078 | } | |
2079 | ||
2080 | }else if (chan->common.usedby == API) { | |
2081 | ||
2082 | /* We are in API mode. | |
2083 | * Add an API header to the RAW packet | |
2084 | * and queue it into a circular buffer. | |
2085 | * Then kick the fr_bh() bottom half handler */ | |
2086 | ||
2087 | api_rx_hdr_t* api_rx_hdr; | |
2088 | chan->drvstats_rx_intr.rx_intr_bfr_passed_to_stack ++; | |
2089 | chan->ifstats.rx_packets ++; | |
2090 | card->wandev.stats.rx_packets ++; | |
2091 | ||
2092 | chan->ifstats.rx_bytes += skb->len; | |
2093 | card->wandev.stats.rx_bytes += skb->len; | |
2094 | ||
2095 | skb_push(skb, sizeof(api_rx_hdr_t)); | |
2096 | api_rx_hdr = (api_rx_hdr_t*)&skb->data[0x00]; | |
2097 | api_rx_hdr->attr = frbuf->attr; | |
2098 | api_rx_hdr->time_stamp = frbuf->tmstamp; | |
2099 | ||
2100 | skb->protocol = htons(ETH_P_IP); | |
2101 | skb->mac.raw = skb->data; | |
2102 | skb->dev = dev; | |
2103 | skb->pkt_type = WAN_PACKET_DATA; | |
2104 | ||
2105 | bh_enqueue(dev, skb); | |
2106 | ||
2107 | trigger_fr_bh(chan); | |
2108 | ||
2109 | }else if (handle_IPXWAN(skb->data,chan->name,chan->enable_IPX, chan->network_number)){ | |
2110 | ||
2111 | //FIXME: Frame Relay IPX is not supported, Yet ! | |
2112 | //if (chan->enable_IPX) { | |
2113 | // fr_send(card, dlci, 0, skb->len,skb->data); | |
2114 | //} | |
2115 | dev_kfree_skb_any(skb); | |
2116 | ||
2117 | } else if (is_arp(skb->data)) { | |
2118 | ||
2119 | /* ARP support enabled Mar 16 2000 | |
2120 | * Process incoming ARP reply/request, setup | |
2121 | * dynamic routes. */ | |
2122 | ||
2123 | if (process_ARP((arphdr_1490_t *)skb->data, card, dev)) { | |
2124 | if (net_ratelimit()){ | |
2125 | printk (KERN_INFO | |
2126 | "%s: Error processing ARP Packet.\n", | |
2127 | card->devname); | |
2128 | } | |
2129 | } | |
2130 | dev_kfree_skb_any(skb); | |
2131 | ||
2132 | } else if (skb->data[0] != 0x03) { | |
2133 | ||
2134 | if (net_ratelimit()) { | |
2135 | printk(KERN_INFO "%s: Non IETF packet discarded.\n", | |
2136 | card->devname); | |
2137 | } | |
2138 | dev_kfree_skb_any(skb); | |
2139 | ||
2140 | } else { | |
2141 | ||
2142 | len_incl_hdr = skb->len; | |
2143 | /* Decapsulate packet and pass it up the | |
2144 | protocol stack */ | |
2145 | skb->dev = dev; | |
2146 | ||
2147 | if (chan->common.usedby == BRIDGE || chan->common.usedby == BRIDGE_NODE){ | |
2148 | ||
2149 | /* Make sure it's an Ethernet frame, otherwise drop it */ | |
2150 | if (!memcmp(skb->data, "\x03\x00\x80\x00\x80\xC2\x00\x07", 8)) { | |
2151 | skb_pull(skb, 8); | |
2152 | skb->protocol=eth_type_trans(skb,dev); | |
2153 | }else{ | |
2154 | ++chan->drvstats_rx_intr.rx_intr_bfr_not_passed_to_stack; | |
2155 | ++chan->ifstats.rx_errors; | |
2156 | ++card->wandev.stats.rx_errors; | |
2157 | goto rx_done; | |
2158 | } | |
2159 | }else{ | |
2160 | ||
2161 | /* remove hardware header */ | |
2162 | buf = skb_pull(skb, 1); | |
2163 | ||
2164 | if (!wanrouter_type_trans(skb, dev)) { | |
2165 | ||
2166 | /* can't decapsulate packet */ | |
2167 | dev_kfree_skb_any(skb); | |
2168 | ||
2169 | ++chan->drvstats_rx_intr.rx_intr_bfr_not_passed_to_stack; | |
2170 | ++chan->ifstats.rx_errors; | |
2171 | ++card->wandev.stats.rx_errors; | |
2172 | goto rx_done; | |
2173 | } | |
2174 | skb->mac.raw = skb->data; | |
2175 | } | |
2176 | ||
2177 | ||
2178 | /* Send a packet up the IP stack */ | |
2179 | skb->dev->last_rx = jiffies; | |
2180 | netif_rx(skb); | |
2181 | ++chan->drvstats_rx_intr.rx_intr_bfr_passed_to_stack; | |
2182 | ++chan->ifstats.rx_packets; | |
2183 | ++card->wandev.stats.rx_packets; | |
2184 | ||
2185 | chan->ifstats.rx_bytes += len_incl_hdr; | |
2186 | card->wandev.stats.rx_bytes += len_incl_hdr; | |
2187 | } | |
2188 | ||
2189 | rx_done: | |
2190 | ||
2191 | /* Release buffer element and calculate a pointer to the next one */ | |
2192 | frbuf->flag = 0; | |
2193 | card->rxmb = ++frbuf; | |
2194 | if ((void*)frbuf > card->u.f.rxmb_last) | |
2195 | card->rxmb = card->u.f.rxmb_base; | |
2196 | ||
2197 | } | |
2198 | ||
2199 | /*================================================================== | |
2200 | * tx_intr: Transmit interrupt handler. | |
2201 | * | |
2202 | * Rationale: | |
2203 | * If the board is busy transmitting, if_send() will | |
2204 | * buffers a single packet and turn on | |
2205 | * the tx interrupt. Tx interrupt will be called | |
2206 | * by the board, once the firmware can send more | |
2207 | * data. Thus, no polling is required. | |
2208 | * | |
2209 | * Description: | |
2210 | * Tx interrupt is called for each | |
2211 | * configured dlci channel. Thus: | |
2212 | * 1. Obtain the netowrk interface based on the | |
2213 | * dlci number. | |
2214 | * 2. Check that network interface is up and | |
2215 | * properly setup. | |
2216 | * 3. Check for a buffered packet. | |
2217 | * 4. Transmit the packet. | |
2218 | * 5. If we are in WANPIPE mode, mark the | |
2219 | * NET_BH handler. | |
2220 | * 6. If we are in API mode, kick | |
2221 | * the AF_WANPIPE socket for more data. | |
2222 | * | |
2223 | */ | |
2224 | static void tx_intr(sdla_t *card) | |
2225 | { | |
2226 | fr508_flags_t* flags = card->flags; | |
2227 | fr_tx_buf_ctl_t* bctl; | |
2228 | struct net_device* dev; | |
2229 | fr_channel_t* chan; | |
2230 | ||
2231 | if(card->hw.type == SDLA_S514){ | |
2232 | bctl = (void*)(flags->tse_offs + card->hw.dpmbase); | |
2233 | }else{ | |
2234 | bctl = (void*)(flags->tse_offs - FR_MB_VECTOR + | |
2235 | card->hw.dpmbase); | |
2236 | } | |
2237 | ||
2238 | /* Find the structure and make it unbusy */ | |
2239 | dev = find_channel(card, flags->dlci); | |
2240 | if (dev == NULL){ | |
2241 | printk(KERN_INFO "NO DEV IN TX Interrupt\n"); | |
2242 | goto end_of_tx_intr; | |
2243 | } | |
2244 | ||
2245 | if ((chan = dev->priv) == NULL){ | |
2246 | printk(KERN_INFO "NO CHAN IN TX Interrupt\n"); | |
2247 | goto end_of_tx_intr; | |
2248 | } | |
2249 | ||
2250 | if(!chan->transmit_length || !chan->delay_skb) { | |
2251 | printk(KERN_INFO "%s: tx int error - transmit length zero\n", | |
2252 | card->wandev.name); | |
2253 | goto end_of_tx_intr; | |
2254 | } | |
2255 | ||
2256 | /* If the 'if_send()' procedure is currently checking the 'tbusy' | |
2257 | status, then we cannot transmit. Instead, we configure the microcode | |
2258 | so as to re-issue this transmit interrupt at a later stage. | |
2259 | */ | |
2260 | if (test_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical)) { | |
2261 | ||
2262 | fr_dlci_interface_t* dlci_interface = chan->dlci_int_interface; | |
2263 | bctl->flag = 0xA0; | |
2264 | dlci_interface->gen_interrupt |= FR_INTR_TXRDY; | |
2265 | return; | |
2266 | ||
2267 | }else{ | |
2268 | bctl->dlci = flags->dlci; | |
2269 | bctl->length = chan->transmit_length+chan->fr_header_len; | |
2270 | sdla_poke(&card->hw, | |
2271 | fr_send_hdr(card,bctl->dlci,bctl->offset), | |
2272 | chan->delay_skb->data, | |
2273 | chan->delay_skb->len); | |
2274 | bctl->flag = 0xC0; | |
2275 | ||
2276 | ++chan->ifstats.tx_packets; | |
2277 | ++card->wandev.stats.tx_packets; | |
2278 | chan->ifstats.tx_bytes += chan->transmit_length; | |
2279 | card->wandev.stats.tx_bytes += chan->transmit_length; | |
2280 | ||
2281 | /* We must free an sk buffer, which we used | |
2282 | * for delayed transmission; Otherwise, the sock | |
2283 | * will run out of memory */ | |
2284 | dev_kfree_skb_any(chan->delay_skb); | |
2285 | ||
2286 | chan->delay_skb = NULL; | |
2287 | chan->transmit_length = 0; | |
2288 | ||
2289 | dev->trans_start = jiffies; | |
2290 | ||
2291 | if (netif_queue_stopped(dev)){ | |
2292 | /* If using API, than wakeup socket BH handler */ | |
2293 | if (chan->common.usedby == API){ | |
2294 | netif_start_queue(dev); | |
2295 | wakeup_sk_bh(dev); | |
2296 | }else{ | |
2297 | netif_wake_queue(dev); | |
2298 | } | |
2299 | } | |
2300 | } | |
2301 | ||
2302 | end_of_tx_intr: | |
2303 | ||
2304 | /* if any other interfaces have transmit interrupts pending, | |
2305 | * do not disable the global transmit interrupt */ | |
2306 | if(!(-- card->u.f.tx_interrupts_pending)) | |
2307 | flags->imask &= ~FR_INTR_TXRDY; | |
2308 | ||
2309 | ||
2310 | } | |
2311 | ||
2312 | ||
2313 | /*============================================================================ | |
2314 | * timer_intr: Timer interrupt handler. | |
2315 | * | |
2316 | * Rationale: | |
2317 | * All commans must be executed within the timer | |
2318 | * interrupt since no two commands should execute | |
2319 | * at the same time. | |
2320 | * | |
2321 | * Description: | |
2322 | * The timer interrupt is used to: | |
2323 | * 1. Processing udp calls from 'fpipemon'. | |
2324 | * 2. Processing update calls from /proc file system | |
2325 | * 3. Reading board-level statistics for | |
2326 | * updating the proc file system. | |
2327 | * 4. Sending inverse ARP request packets. | |
2328 | * 5. Configure a dlci/channel. | |
2329 | * 6. Unconfigure a dlci/channel. (Node only) | |
2330 | */ | |
2331 | ||
2332 | static void timer_intr(sdla_t *card) | |
2333 | { | |
2334 | fr508_flags_t* flags = card->flags; | |
2335 | ||
2336 | /* UDP Debuging: fpipemon call */ | |
2337 | if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UDP) { | |
2338 | if(card->u.f.udp_type == UDP_FPIPE_TYPE) { | |
2339 | if(process_udp_mgmt_pkt(card)) { | |
2340 | card->u.f.timer_int_enabled &= | |
2341 | ~TMR_INT_ENABLED_UDP; | |
2342 | } | |
2343 | } | |
2344 | } | |
2345 | ||
2346 | /* /proc update call : triggered from update() */ | |
2347 | if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UPDATE) { | |
2348 | fr_get_err_stats(card); | |
2349 | fr_get_stats(card); | |
2350 | card->u.f.update_comms_stats = 0; | |
2351 | card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE; | |
2352 | } | |
2353 | ||
2354 | /* Update the channel state call. This is call is | |
2355 | * triggered by if_send() function */ | |
2356 | if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UPDATE_STATE){ | |
2357 | struct net_device *dev; | |
2358 | if (card->wandev.state == WAN_CONNECTED){ | |
2359 | for (dev = card->wandev.dev; dev; | |
2360 | dev = *((struct net_device **)dev->priv)){ | |
2361 | fr_channel_t *chan = dev->priv; | |
2362 | if (chan->common.state != WAN_CONNECTED){ | |
2363 | update_chan_state(dev); | |
2364 | } | |
2365 | } | |
2366 | } | |
2367 | card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE_STATE; | |
2368 | } | |
2369 | ||
2370 | /* configure a dlci/channel */ | |
2371 | if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_CONFIG){ | |
2372 | config_fr(card); | |
2373 | card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_CONFIG; | |
2374 | } | |
2375 | ||
2376 | /* unconfigure a dlci/channel */ | |
2377 | if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UNCONFIG){ | |
2378 | unconfig_fr(card); | |
2379 | card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UNCONFIG; | |
2380 | } | |
2381 | ||
2382 | ||
2383 | /* Transmit ARP packets */ | |
2384 | if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_ARP){ | |
2385 | int i=0; | |
2386 | struct net_device *dev; | |
2387 | ||
2388 | if (card->u.f.arp_dev == NULL) | |
2389 | card->u.f.arp_dev = card->wandev.dev; | |
2390 | ||
2391 | dev = card->u.f.arp_dev; | |
2392 | ||
2393 | for (;;){ | |
2394 | ||
2395 | fr_channel_t *chan = dev->priv; | |
2396 | ||
2397 | /* If the interface is brought down cancel sending In-ARPs */ | |
2398 | if (!(dev->flags&IFF_UP)){ | |
2399 | clear_bit(0,&chan->inarp_ready); | |
2400 | } | |
2401 | ||
2402 | if (test_bit(0,&chan->inarp_ready)){ | |
2403 | ||
2404 | if (check_tx_status(card,dev)){ | |
2405 | set_bit(ARP_CRIT,&card->wandev.critical); | |
2406 | break; | |
2407 | } | |
2408 | ||
2409 | if (!send_inarp_request(card,dev)){ | |
2410 | trigger_fr_arp(dev); | |
2411 | chan->inarp_tick = jiffies; | |
2412 | } | |
2413 | ||
2414 | clear_bit(0,&chan->inarp_ready); | |
2415 | dev = move_dev_to_next(card,dev); | |
2416 | break; | |
2417 | } | |
2418 | dev = move_dev_to_next(card,dev); | |
2419 | ||
2420 | if (++i == card->wandev.new_if_cnt){ | |
2421 | card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_ARP; | |
2422 | break; | |
2423 | } | |
2424 | } | |
2425 | card->u.f.arp_dev = dev; | |
2426 | } | |
2427 | ||
2428 | if(!card->u.f.timer_int_enabled) | |
2429 | flags->imask &= ~FR_INTR_TIMER; | |
2430 | } | |
2431 | ||
2432 | ||
2433 | /*============================================================================ | |
2434 | * spur_intr: Spurious interrupt handler. | |
2435 | * | |
2436 | * Description: | |
2437 | * We don't know this interrupt. | |
2438 | * Print a warning. | |
2439 | */ | |
2440 | ||
2441 | static void spur_intr (sdla_t* card) | |
2442 | { | |
2443 | if (net_ratelimit()){ | |
2444 | printk(KERN_INFO "%s: spurious interrupt!\n", card->devname); | |
2445 | } | |
2446 | } | |
2447 | ||
2448 | ||
2449 | //FIXME: Fix the IPX in next version | |
2450 | /*=========================================================================== | |
2451 | * Return 0 for non-IPXWAN packet | |
2452 | * 1 for IPXWAN packet or IPX is not enabled! | |
2453 | * FIXME: Use a IPX structure here not offsets | |
2454 | */ | |
2455 | static int handle_IPXWAN(unsigned char *sendpacket, | |
2456 | char *devname, unsigned char enable_IPX, | |
2457 | unsigned long network_number) | |
2458 | { | |
2459 | int i; | |
2460 | ||
2461 | if( sendpacket[1] == 0x00 && sendpacket[2] == 0x80 && | |
2462 | sendpacket[6] == 0x81 && sendpacket[7] == 0x37) { | |
2463 | ||
2464 | /* It's an IPX packet */ | |
2465 | if (!enable_IPX){ | |
2466 | /* Return 1 so we don't pass it up the stack. */ | |
2467 | //FIXME: Take this out when IPX is fixed | |
2468 | if (net_ratelimit()){ | |
2469 | printk (KERN_INFO | |
2470 | "%s: WARNING: Unsupported IPX packet received and dropped\n", | |
2471 | devname); | |
2472 | } | |
2473 | return 1; | |
2474 | } | |
2475 | } else { | |
2476 | /* It's not IPX so return and pass it up the stack. */ | |
2477 | return 0; | |
2478 | } | |
2479 | ||
2480 | if( sendpacket[24] == 0x90 && sendpacket[25] == 0x04){ | |
2481 | /* It's IPXWAN */ | |
2482 | ||
2483 | if( sendpacket[10] == 0x02 && sendpacket[42] == 0x00){ | |
2484 | ||
2485 | /* It's a timer request packet */ | |
2486 | printk(KERN_INFO "%s: Received IPXWAN Timer Request packet\n", | |
2487 | devname); | |
2488 | ||
2489 | /* Go through the routing options and answer no to every | |
2490 | * option except Unnumbered RIP/SAP | |
2491 | */ | |
2492 | for(i = 49; sendpacket[i] == 0x00; i += 5){ | |
2493 | /* 0x02 is the option for Unnumbered RIP/SAP */ | |
2494 | if( sendpacket[i + 4] != 0x02){ | |
2495 | sendpacket[i + 1] = 0; | |
2496 | } | |
2497 | } | |
2498 | ||
2499 | /* Skip over the extended Node ID option */ | |
2500 | if( sendpacket[i] == 0x04 ){ | |
2501 | i += 8; | |
2502 | } | |
2503 | ||
2504 | /* We also want to turn off all header compression opt. | |
2505 | */ | |
2506 | for(; sendpacket[i] == 0x80 ;){ | |
2507 | sendpacket[i + 1] = 0; | |
2508 | i += (sendpacket[i + 2] << 8) + (sendpacket[i + 3]) + 4; | |
2509 | } | |
2510 | ||
2511 | /* Set the packet type to timer response */ | |
2512 | sendpacket[42] = 0x01; | |
2513 | ||
2514 | printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n", | |
2515 | devname); | |
2516 | ||
2517 | } else if( sendpacket[42] == 0x02 ){ | |
2518 | ||
2519 | /* This is an information request packet */ | |
2520 | printk(KERN_INFO | |
2521 | "%s: Received IPXWAN Information Request packet\n", | |
2522 | devname); | |
2523 | ||
2524 | /* Set the packet type to information response */ | |
2525 | sendpacket[42] = 0x03; | |
2526 | ||
2527 | /* Set the router name */ | |
2528 | sendpacket[59] = 'F'; | |
2529 | sendpacket[60] = 'P'; | |
2530 | sendpacket[61] = 'I'; | |
2531 | sendpacket[62] = 'P'; | |
2532 | sendpacket[63] = 'E'; | |
2533 | sendpacket[64] = '-'; | |
2534 | sendpacket[65] = CVHexToAscii(network_number >> 28); | |
2535 | sendpacket[66] = CVHexToAscii((network_number & 0x0F000000)>> 24); | |
2536 | sendpacket[67] = CVHexToAscii((network_number & 0x00F00000)>> 20); | |
2537 | sendpacket[68] = CVHexToAscii((network_number & 0x000F0000)>> 16); | |
2538 | sendpacket[69] = CVHexToAscii((network_number & 0x0000F000)>> 12); | |
2539 | sendpacket[70] = CVHexToAscii((network_number & 0x00000F00)>> 8); | |
2540 | sendpacket[71] = CVHexToAscii((network_number & 0x000000F0)>> 4); | |
2541 | sendpacket[72] = CVHexToAscii(network_number & 0x0000000F); | |
2542 | for(i = 73; i < 107; i+= 1) | |
2543 | { | |
2544 | sendpacket[i] = 0; | |
2545 | } | |
2546 | ||
2547 | printk(KERN_INFO "%s: Sending IPXWAN Information Response packet\n", | |
2548 | devname); | |
2549 | } else { | |
2550 | ||
2551 | printk(KERN_INFO "%s: Unknown IPXWAN packet!\n",devname); | |
2552 | return 0; | |
2553 | } | |
2554 | ||
2555 | /* Set the WNodeID to our network address */ | |
2556 | sendpacket[43] = (unsigned char)(network_number >> 24); | |
2557 | sendpacket[44] = (unsigned char)((network_number & 0x00FF0000) >> 16); | |
2558 | sendpacket[45] = (unsigned char)((network_number & 0x0000FF00) >> 8); | |
2559 | sendpacket[46] = (unsigned char)(network_number & 0x000000FF); | |
2560 | ||
2561 | return 1; | |
2562 | } | |
2563 | ||
2564 | /* If we get here, it's an IPX-data packet so it'll get passed up the | |
2565 | * stack. | |
2566 | * switch the network numbers | |
2567 | */ | |
2568 | switch_net_numbers(sendpacket, network_number ,1); | |
2569 | return 0; | |
2570 | } | |
2571 | /*============================================================================ | |
2572 | * process_route | |
2573 | * | |
2574 | * Rationale: | |
2575 | * If the interface goes down, or we receive an ARP request, | |
2576 | * we have to change the network interface ip addresses. | |
2577 | * This cannot be done within the interrupt. | |
2578 | * | |
2579 | * Description: | |
2580 | * | |
2581 | * This routine is called as a polling routine to dynamically | |
2582 | * add/delete routes negotiated by inverse ARP. It is in this | |
2583 | * "task" because we don't want routes to be added while in | |
2584 | * interrupt context. | |
2585 | * | |
2586 | * Usage: | |
2587 | * This function is called by fr_poll() polling funtion. | |
2588 | */ | |
2589 | ||
2590 | static void process_route(struct net_device *dev) | |
2591 | { | |
2592 | fr_channel_t *chan = dev->priv; | |
2593 | sdla_t *card = chan->card; | |
2594 | ||
2595 | struct ifreq if_info; | |
2596 | struct sockaddr_in *if_data; | |
2597 | mm_segment_t fs = get_fs(); | |
2598 | u32 ip_tmp; | |
2599 | int err; | |
2600 | ||
2601 | ||
2602 | switch(chan->route_flag){ | |
2603 | ||
2604 | case ADD_ROUTE: | |
2605 | ||
2606 | /* Set remote addresses */ | |
2607 | memset(&if_info, 0, sizeof(if_info)); | |
2608 | strcpy(if_info.ifr_name, dev->name); | |
2609 | ||
2610 | set_fs(get_ds()); /* get user space block */ | |
2611 | ||
2612 | if_data = (struct sockaddr_in *)&if_info.ifr_dstaddr; | |
2613 | if_data->sin_addr.s_addr = chan->ip_remote; | |
2614 | if_data->sin_family = AF_INET; | |
2615 | err = devinet_ioctl( SIOCSIFDSTADDR, &if_info ); | |
2616 | ||
2617 | set_fs(fs); /* restore old block */ | |
2618 | ||
2619 | if (err) { | |
2620 | printk(KERN_INFO | |
2621 | "%s: Route Add failed. Error: %d\n", | |
2622 | card->devname,err); | |
2623 | printk(KERN_INFO "%s: Address: %u.%u.%u.%u\n", | |
2624 | chan->name, NIPQUAD(chan->ip_remote)); | |
2625 | ||
2626 | }else { | |
2627 | printk(KERN_INFO "%s: Route Added Successfully: %u.%u.%u.%u\n", | |
2628 | card->devname,NIPQUAD(chan->ip_remote)); | |
2629 | chan->route_flag = ROUTE_ADDED; | |
2630 | } | |
2631 | break; | |
2632 | ||
2633 | case REMOVE_ROUTE: | |
2634 | ||
2635 | /* Set remote addresses */ | |
2636 | memset(&if_info, 0, sizeof(if_info)); | |
2637 | strcpy(if_info.ifr_name, dev->name); | |
2638 | ||
2639 | ip_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP); | |
2640 | ||
2641 | set_fs(get_ds()); /* get user space block */ | |
2642 | ||
2643 | if_data = (struct sockaddr_in *)&if_info.ifr_dstaddr; | |
2644 | if_data->sin_addr.s_addr = 0; | |
2645 | if_data->sin_family = AF_INET; | |
2646 | err = devinet_ioctl( SIOCSIFDSTADDR, &if_info ); | |
2647 | ||
2648 | set_fs(fs); | |
2649 | ||
2650 | if (err) { | |
2651 | printk(KERN_INFO | |
2652 | "%s: Deleting of route failed. Error: %d\n", | |
2653 | card->devname,err); | |
2654 | printk(KERN_INFO "%s: Address: %u.%u.%u.%u\n", | |
2655 | dev->name,NIPQUAD(chan->ip_remote) ); | |
2656 | ||
2657 | } else { | |
2658 | printk(KERN_INFO "%s: Route Removed Sucessfuly: %u.%u.%u.%u\n", | |
2659 | card->devname,NIPQUAD(ip_tmp)); | |
2660 | chan->route_flag = NO_ROUTE; | |
2661 | } | |
2662 | break; | |
2663 | ||
2664 | } /* Case Statement */ | |
2665 | ||
2666 | } | |
2667 | ||
2668 | ||
2669 | ||
2670 | /****** Frame Relay Firmware-Specific Functions *****************************/ | |
2671 | ||
2672 | /*============================================================================ | |
2673 | * Read firmware code version. | |
2674 | * o fill string str with firmware version info. | |
2675 | */ | |
2676 | static int fr_read_version (sdla_t* card, char* str) | |
2677 | { | |
2678 | fr_mbox_t* mbox = card->mbox; | |
2679 | int retry = MAX_CMD_RETRY; | |
2680 | int err; | |
2681 | ||
2682 | do | |
2683 | { | |
2684 | mbox->cmd.command = FR_READ_CODE_VERSION; | |
2685 | mbox->cmd.length = 0; | |
2686 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2687 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2688 | ||
2689 | if (!err && str) { | |
2690 | int len = mbox->cmd.length; | |
2691 | memcpy(str, mbox->data, len); | |
2692 | str[len] = '\0'; | |
2693 | } | |
2694 | return err; | |
2695 | } | |
2696 | ||
2697 | /*============================================================================ | |
2698 | * Set global configuration. | |
2699 | */ | |
2700 | static int fr_configure (sdla_t* card, fr_conf_t *conf) | |
2701 | { | |
2702 | fr_mbox_t* mbox = card->mbox; | |
2703 | int retry = MAX_CMD_RETRY; | |
2704 | int dlci_num = card->u.f.dlci_num; | |
2705 | int err, i; | |
2706 | ||
2707 | do | |
2708 | { | |
2709 | memcpy(mbox->data, conf, sizeof(fr_conf_t)); | |
2710 | ||
2711 | if (dlci_num) for (i = 0; i < dlci_num; ++i) | |
2712 | ((fr_conf_t*)mbox->data)->dlci[i] = | |
2713 | card->u.f.node_dlci[i]; | |
2714 | ||
2715 | mbox->cmd.command = FR_SET_CONFIG; | |
2716 | mbox->cmd.length = | |
2717 | sizeof(fr_conf_t) + dlci_num * sizeof(short); | |
2718 | ||
2719 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2720 | ||
2721 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2722 | ||
2723 | /*NC Oct 12 2000 */ | |
2724 | if (err != CMD_OK){ | |
2725 | printk(KERN_ERR "%s: Frame Relay Configuration Failed: rc=0x%x\n", | |
2726 | card->devname,err); | |
2727 | } | |
2728 | ||
2729 | return err; | |
2730 | } | |
2731 | ||
2732 | /*============================================================================ | |
2733 | * Set DLCI configuration. | |
2734 | */ | |
2735 | static int fr_dlci_configure (sdla_t* card, fr_dlc_conf_t *conf, unsigned dlci) | |
2736 | { | |
2737 | fr_mbox_t* mbox = card->mbox; | |
2738 | int retry = MAX_CMD_RETRY; | |
2739 | int err; | |
2740 | ||
2741 | do | |
2742 | { | |
2743 | memcpy(mbox->data, conf, sizeof(fr_dlc_conf_t)); | |
2744 | mbox->cmd.dlci = (unsigned short) dlci; | |
2745 | mbox->cmd.command = FR_SET_CONFIG; | |
2746 | mbox->cmd.length = sizeof(fr_dlc_conf_t); | |
2747 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2748 | } while (err && retry--); | |
2749 | ||
2750 | return err; | |
2751 | } | |
2752 | /*============================================================================ | |
2753 | * Set interrupt mode. | |
2754 | */ | |
2755 | static int fr_set_intr_mode (sdla_t* card, unsigned mode, unsigned mtu, | |
2756 | unsigned short timeout) | |
2757 | { | |
2758 | fr_mbox_t* mbox = card->mbox; | |
2759 | fr508_intr_ctl_t* ictl = (void*)mbox->data; | |
2760 | int retry = MAX_CMD_RETRY; | |
2761 | int err; | |
2762 | ||
2763 | do | |
2764 | { | |
2765 | memset(ictl, 0, sizeof(fr508_intr_ctl_t)); | |
2766 | ictl->mode = mode; | |
2767 | ictl->tx_len = mtu; | |
2768 | ictl->irq = card->hw.irq; | |
2769 | ||
2770 | /* indicate timeout on timer */ | |
2771 | if (mode & 0x20) ictl->timeout = timeout; | |
2772 | ||
2773 | mbox->cmd.length = sizeof(fr508_intr_ctl_t); | |
2774 | mbox->cmd.command = FR_SET_INTR_MODE; | |
2775 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2776 | ||
2777 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2778 | ||
2779 | return err; | |
2780 | } | |
2781 | ||
2782 | /*============================================================================ | |
2783 | * Enable communications. | |
2784 | */ | |
2785 | static int fr_comm_enable (sdla_t* card) | |
2786 | { | |
2787 | fr_mbox_t* mbox = card->mbox; | |
2788 | int retry = MAX_CMD_RETRY; | |
2789 | int err; | |
2790 | ||
2791 | do | |
2792 | { | |
2793 | mbox->cmd.command = FR_COMM_ENABLE; | |
2794 | mbox->cmd.length = 0; | |
2795 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2796 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2797 | ||
2798 | return err; | |
2799 | } | |
2800 | ||
2801 | /*============================================================================ | |
2802 | * fr_comm_disable | |
2803 | * | |
2804 | * Warning: This functin is called by the shutdown() procedure. It is void | |
2805 | * since dev->priv are has already been deallocated and no | |
2806 | * error checking is possible using fr_event() function. | |
2807 | */ | |
2808 | static void fr_comm_disable (sdla_t* card) | |
2809 | { | |
2810 | fr_mbox_t* mbox = card->mbox; | |
2811 | int retry = MAX_CMD_RETRY; | |
2812 | int err; | |
2813 | ||
2814 | do { | |
2815 | mbox->cmd.command = FR_SET_MODEM_STATUS; | |
2816 | mbox->cmd.length = 1; | |
2817 | mbox->data[0] = 0; | |
2818 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2819 | } while (err && retry--); | |
2820 | ||
2821 | retry = MAX_CMD_RETRY; | |
2822 | ||
2823 | do | |
2824 | { | |
2825 | mbox->cmd.command = FR_COMM_DISABLE; | |
2826 | mbox->cmd.length = 0; | |
2827 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2828 | } while (err && retry--); | |
2829 | ||
2830 | return; | |
2831 | } | |
2832 | ||
2833 | ||
2834 | ||
2835 | /*============================================================================ | |
2836 | * Get communications error statistics. | |
2837 | */ | |
2838 | static int fr_get_err_stats (sdla_t* card) | |
2839 | { | |
2840 | fr_mbox_t* mbox = card->mbox; | |
2841 | int retry = MAX_CMD_RETRY; | |
2842 | int err; | |
2843 | ||
2844 | ||
2845 | do | |
2846 | { | |
2847 | mbox->cmd.command = FR_READ_ERROR_STATS; | |
2848 | mbox->cmd.length = 0; | |
2849 | mbox->cmd.dlci = 0; | |
2850 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2851 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2852 | ||
2853 | if (!err) { | |
2854 | fr_comm_stat_t* stats = (void*)mbox->data; | |
2855 | card->wandev.stats.rx_over_errors = stats->rx_overruns; | |
2856 | card->wandev.stats.rx_crc_errors = stats->rx_bad_crc; | |
2857 | card->wandev.stats.rx_missed_errors = stats->rx_aborts; | |
2858 | card->wandev.stats.rx_length_errors = stats->rx_too_long; | |
2859 | card->wandev.stats.tx_aborted_errors = stats->tx_aborts; | |
2860 | ||
2861 | } | |
2862 | ||
2863 | return err; | |
2864 | } | |
2865 | ||
2866 | /*============================================================================ | |
2867 | * Get statistics. | |
2868 | */ | |
2869 | static int fr_get_stats (sdla_t* card) | |
2870 | { | |
2871 | fr_mbox_t* mbox = card->mbox; | |
2872 | int retry = MAX_CMD_RETRY; | |
2873 | int err; | |
2874 | ||
2875 | ||
2876 | do | |
2877 | { | |
2878 | mbox->cmd.command = FR_READ_STATISTICS; | |
2879 | mbox->cmd.length = 0; | |
2880 | mbox->cmd.dlci = 0; | |
2881 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2882 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2883 | ||
2884 | if (!err) { | |
2885 | fr_link_stat_t* stats = (void*)mbox->data; | |
2886 | card->wandev.stats.rx_frame_errors = stats->rx_bad_format; | |
2887 | card->wandev.stats.rx_dropped = | |
2888 | stats->rx_dropped + stats->rx_dropped2; | |
2889 | } | |
2890 | ||
2891 | return err; | |
2892 | } | |
2893 | ||
2894 | /*============================================================================ | |
2895 | * Add DLCI(s) (Access Node only!). | |
2896 | * This routine will perform the ADD_DLCIs command for the specified DLCI. | |
2897 | */ | |
2898 | static int fr_add_dlci (sdla_t* card, int dlci) | |
2899 | { | |
2900 | fr_mbox_t* mbox = card->mbox; | |
2901 | int retry = MAX_CMD_RETRY; | |
2902 | int err; | |
2903 | ||
2904 | do | |
2905 | { | |
2906 | unsigned short* dlci_list = (void*)mbox->data; | |
2907 | ||
2908 | mbox->cmd.length = sizeof(short); | |
2909 | dlci_list[0] = dlci; | |
2910 | mbox->cmd.command = FR_ADD_DLCI; | |
2911 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2912 | ||
2913 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2914 | ||
2915 | return err; | |
2916 | } | |
2917 | ||
2918 | /*============================================================================ | |
2919 | * Activate DLCI(s) (Access Node only!). | |
2920 | * This routine will perform the ACTIVATE_DLCIs command with a DLCI number. | |
2921 | */ | |
2922 | static int fr_activate_dlci (sdla_t* card, int dlci) | |
2923 | { | |
2924 | fr_mbox_t* mbox = card->mbox; | |
2925 | int retry = MAX_CMD_RETRY; | |
2926 | int err; | |
2927 | ||
2928 | do | |
2929 | { | |
2930 | unsigned short* dlci_list = (void*)mbox->data; | |
2931 | ||
2932 | mbox->cmd.length = sizeof(short); | |
2933 | dlci_list[0] = dlci; | |
2934 | mbox->cmd.command = FR_ACTIVATE_DLCI; | |
2935 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2936 | ||
2937 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2938 | ||
2939 | return err; | |
2940 | } | |
2941 | ||
2942 | /*============================================================================ | |
2943 | * Delete DLCI(s) (Access Node only!). | |
2944 | * This routine will perform the DELETE_DLCIs command with a DLCI number. | |
2945 | */ | |
2946 | static int fr_delete_dlci (sdla_t* card, int dlci) | |
2947 | { | |
2948 | fr_mbox_t* mbox = card->mbox; | |
2949 | int retry = MAX_CMD_RETRY; | |
2950 | int err; | |
2951 | ||
2952 | do | |
2953 | { | |
2954 | unsigned short* dlci_list = (void*)mbox->data; | |
2955 | ||
2956 | mbox->cmd.length = sizeof(short); | |
2957 | dlci_list[0] = dlci; | |
2958 | mbox->cmd.command = FR_DELETE_DLCI; | |
2959 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2960 | ||
2961 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2962 | ||
2963 | return err; | |
2964 | } | |
2965 | ||
2966 | ||
2967 | ||
2968 | /*============================================================================ | |
2969 | * Issue in-channel signalling frame. | |
2970 | */ | |
2971 | static int fr_issue_isf (sdla_t* card, int isf) | |
2972 | { | |
2973 | fr_mbox_t* mbox = card->mbox; | |
2974 | int retry = MAX_CMD_RETRY; | |
2975 | int err; | |
2976 | ||
2977 | do | |
2978 | { | |
2979 | mbox->data[0] = isf; | |
2980 | mbox->cmd.length = 1; | |
2981 | mbox->cmd.command = FR_ISSUE_IS_FRAME; | |
2982 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
2983 | } while (err && retry-- && fr_event(card, err, mbox)); | |
2984 | ||
2985 | return err; | |
2986 | } | |
2987 | ||
2988 | ||
2989 | static unsigned int fr_send_hdr (sdla_t*card, int dlci, unsigned int offset) | |
2990 | { | |
2991 | struct net_device *dev = find_channel(card,dlci); | |
2992 | fr_channel_t *chan; | |
2993 | ||
2994 | if (!dev || !(chan=dev->priv)) | |
2995 | return offset; | |
2996 | ||
2997 | if (chan->fr_header_len){ | |
2998 | sdla_poke(&card->hw, offset, chan->fr_header, chan->fr_header_len); | |
2999 | } | |
3000 | ||
3001 | return offset+chan->fr_header_len; | |
3002 | } | |
3003 | ||
3004 | /*============================================================================ | |
3005 | * Send a frame on a selected DLCI. | |
3006 | */ | |
3007 | static int fr_send_data_header (sdla_t* card, int dlci, unsigned char attr, int len, | |
3008 | void *buf, unsigned char hdr_len) | |
3009 | { | |
3010 | fr_mbox_t* mbox = card->mbox + 0x800; | |
3011 | int retry = MAX_CMD_RETRY; | |
3012 | int err; | |
3013 | ||
3014 | do | |
3015 | { | |
3016 | mbox->cmd.dlci = dlci; | |
3017 | mbox->cmd.attr = attr; | |
3018 | mbox->cmd.length = len+hdr_len; | |
3019 | mbox->cmd.command = FR_WRITE; | |
3020 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
3021 | } while (err && retry-- && fr_event(card, err, mbox)); | |
3022 | ||
3023 | if (!err) { | |
3024 | fr_tx_buf_ctl_t* frbuf; | |
3025 | ||
3026 | if(card->hw.type == SDLA_S514) | |
3027 | frbuf = (void*)(*(unsigned long*)mbox->data + | |
3028 | card->hw.dpmbase); | |
3029 | else | |
3030 | frbuf = (void*)(*(unsigned long*)mbox->data - | |
3031 | FR_MB_VECTOR + card->hw.dpmbase); | |
3032 | ||
3033 | sdla_poke(&card->hw, fr_send_hdr(card,dlci,frbuf->offset), buf, len); | |
3034 | frbuf->flag = 0x01; | |
3035 | } | |
3036 | ||
3037 | return err; | |
3038 | } | |
3039 | ||
3040 | static int fr_send (sdla_t* card, int dlci, unsigned char attr, int len, | |
3041 | void *buf) | |
3042 | { | |
3043 | fr_mbox_t* mbox = card->mbox + 0x800; | |
3044 | int retry = MAX_CMD_RETRY; | |
3045 | int err; | |
3046 | ||
3047 | do | |
3048 | { | |
3049 | mbox->cmd.dlci = dlci; | |
3050 | mbox->cmd.attr = attr; | |
3051 | mbox->cmd.length = len; | |
3052 | mbox->cmd.command = FR_WRITE; | |
3053 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
3054 | } while (err && retry-- && fr_event(card, err, mbox)); | |
3055 | ||
3056 | if (!err) { | |
3057 | fr_tx_buf_ctl_t* frbuf; | |
3058 | ||
3059 | if(card->hw.type == SDLA_S514) | |
3060 | frbuf = (void*)(*(unsigned long*)mbox->data + | |
3061 | card->hw.dpmbase); | |
3062 | else | |
3063 | frbuf = (void*)(*(unsigned long*)mbox->data - | |
3064 | FR_MB_VECTOR + card->hw.dpmbase); | |
3065 | ||
3066 | sdla_poke(&card->hw, frbuf->offset, buf, len); | |
3067 | frbuf->flag = 0x01; | |
3068 | } | |
3069 | ||
3070 | return err; | |
3071 | } | |
3072 | ||
3073 | ||
3074 | /****** Firmware Asynchronous Event Handlers ********************************/ | |
3075 | ||
3076 | /*============================================================================ | |
3077 | * Main asyncronous event/error handler. | |
3078 | * This routine is called whenever firmware command returns non-zero | |
3079 | * return code. | |
3080 | * | |
3081 | * Return zero if previous command has to be cancelled. | |
3082 | */ | |
3083 | static int fr_event (sdla_t *card, int event, fr_mbox_t* mbox) | |
3084 | { | |
3085 | fr508_flags_t* flags = card->flags; | |
3086 | char *ptr = &flags->iflag; | |
3087 | int i; | |
3088 | ||
3089 | switch (event) { | |
3090 | ||
3091 | case FRRES_MODEM_FAILURE: | |
3092 | return fr_modem_failure(card, mbox); | |
3093 | ||
3094 | case FRRES_CHANNEL_DOWN: { | |
3095 | struct net_device *dev; | |
3096 | ||
3097 | /* Remove all routes from associated DLCI's */ | |
3098 | for (dev = card->wandev.dev; dev; | |
3099 | dev = *((struct net_device **)dev->priv)) { | |
3100 | fr_channel_t *chan = dev->priv; | |
3101 | if (chan->route_flag == ROUTE_ADDED) { | |
3102 | chan->route_flag = REMOVE_ROUTE; | |
3103 | } | |
3104 | ||
3105 | if (chan->inarp == INARP_CONFIGURED) { | |
3106 | chan->inarp = INARP_REQUEST; | |
3107 | } | |
3108 | ||
3109 | /* If the link becomes disconnected then, | |
3110 | * all channels will be disconnected | |
3111 | * as well. | |
3112 | */ | |
3113 | set_chan_state(dev,WAN_DISCONNECTED); | |
3114 | } | |
3115 | ||
3116 | wanpipe_set_state(card, WAN_DISCONNECTED); | |
3117 | return 1; | |
3118 | } | |
3119 | ||
3120 | case FRRES_CHANNEL_UP: { | |
3121 | struct net_device *dev; | |
3122 | ||
3123 | /* FIXME: Only startup devices that are on the list */ | |
3124 | ||
3125 | for (dev = card->wandev.dev; dev; | |
3126 | dev = *((struct net_device **)dev->priv)) { | |
3127 | ||
3128 | set_chan_state(dev,WAN_CONNECTED); | |
3129 | } | |
3130 | ||
3131 | wanpipe_set_state(card, WAN_CONNECTED); | |
3132 | return 1; | |
3133 | } | |
3134 | ||
3135 | case FRRES_DLCI_CHANGE: | |
3136 | return fr_dlci_change(card, mbox); | |
3137 | ||
3138 | case FRRES_DLCI_MISMATCH: | |
3139 | printk(KERN_INFO "%s: DLCI list mismatch!\n", | |
3140 | card->devname); | |
3141 | return 1; | |
3142 | ||
3143 | case CMD_TIMEOUT: | |
3144 | printk(KERN_ERR "%s: command 0x%02X timed out!\n", | |
3145 | card->devname, mbox->cmd.command); | |
3146 | printk(KERN_INFO "%s: ID Bytes = ",card->devname); | |
3147 | for(i = 0; i < 8; i ++) | |
3148 | printk(KERN_INFO "0x%02X ", *(ptr + 0x18 + i)); | |
3149 | printk(KERN_INFO "\n"); | |
3150 | ||
3151 | break; | |
3152 | ||
3153 | case FRRES_DLCI_INACTIVE: | |
3154 | break; | |
3155 | ||
3156 | case FRRES_CIR_OVERFLOW: | |
3157 | break; | |
3158 | ||
3159 | case FRRES_BUFFER_OVERFLOW: | |
3160 | break; | |
3161 | ||
3162 | default: | |
3163 | printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n" | |
3164 | , card->devname, mbox->cmd.command, event); | |
3165 | } | |
3166 | ||
3167 | return 0; | |
3168 | } | |
3169 | ||
3170 | /*============================================================================ | |
3171 | * Handle modem error. | |
3172 | * | |
3173 | * Return zero if previous command has to be cancelled. | |
3174 | */ | |
3175 | static int fr_modem_failure (sdla_t *card, fr_mbox_t* mbox) | |
3176 | { | |
3177 | printk(KERN_INFO "%s: physical link down! (modem error 0x%02X)\n", | |
3178 | card->devname, mbox->data[0]); | |
3179 | ||
3180 | switch (mbox->cmd.command){ | |
3181 | case FR_WRITE: | |
3182 | ||
3183 | case FR_READ: | |
3184 | return 0; | |
3185 | } | |
3186 | ||
3187 | return 1; | |
3188 | } | |
3189 | ||
3190 | /*============================================================================ | |
3191 | * Handle DLCI status change. | |
3192 | * | |
3193 | * Return zero if previous command has to be cancelled. | |
3194 | */ | |
3195 | static int fr_dlci_change (sdla_t *card, fr_mbox_t* mbox) | |
3196 | { | |
3197 | dlci_status_t* status = (void*)mbox->data; | |
3198 | int cnt = mbox->cmd.length / sizeof(dlci_status_t); | |
3199 | fr_channel_t *chan; | |
3200 | struct net_device* dev2; | |
3201 | ||
3202 | ||
3203 | for (; cnt; --cnt, ++status) { | |
3204 | ||
3205 | unsigned short dlci= status->dlci; | |
3206 | struct net_device* dev = find_channel(card, dlci); | |
3207 | ||
3208 | if (dev == NULL){ | |
3209 | printk(KERN_INFO | |
3210 | "%s: CPE contains unconfigured DLCI= %d\n", | |
3211 | card->devname, dlci); | |
3212 | ||
3213 | printk(KERN_INFO | |
3214 | "%s: unconfigured DLCI %d reported by network\n" | |
3215 | , card->devname, dlci); | |
3216 | ||
3217 | }else{ | |
3218 | if (status->state == FR_LINK_INOPER) { | |
3219 | printk(KERN_INFO | |
3220 | "%s: DLCI %u is inactive!\n", | |
3221 | card->devname, dlci); | |
3222 | ||
3223 | if (dev && netif_running(dev)) | |
3224 | set_chan_state(dev, WAN_DISCONNECTED); | |
3225 | } | |
3226 | ||
3227 | if (status->state & FR_DLCI_DELETED) { | |
3228 | ||
3229 | printk(KERN_INFO | |
3230 | "%s: DLCI %u has been deleted!\n", | |
3231 | card->devname, dlci); | |
3232 | ||
3233 | if (dev && netif_running(dev)){ | |
3234 | ||
3235 | fr_channel_t *chan = dev->priv; | |
3236 | ||
3237 | if (chan->route_flag == ROUTE_ADDED) { | |
3238 | chan->route_flag = REMOVE_ROUTE; | |
3239 | /* The state change will trigger | |
3240 | * the fr polling routine */ | |
3241 | } | |
3242 | ||
3243 | if (chan->inarp == INARP_CONFIGURED) { | |
3244 | chan->inarp = INARP_REQUEST; | |
3245 | } | |
3246 | ||
3247 | set_chan_state(dev, WAN_DISCONNECTED); | |
3248 | } | |
3249 | ||
3250 | } else if (status->state & FR_DLCI_ACTIVE) { | |
3251 | ||
3252 | chan = dev->priv; | |
3253 | ||
3254 | /* This flag is used for configuring specific | |
3255 | DLCI(s) when they become active. | |
3256 | */ | |
3257 | chan->dlci_configured = DLCI_CONFIG_PENDING; | |
3258 | ||
3259 | set_chan_state(dev, WAN_CONNECTED); | |
3260 | ||
3261 | } | |
3262 | } | |
3263 | } | |
3264 | ||
3265 | for (dev2 = card->wandev.dev; dev2; | |
3266 | dev2 = *((struct net_device **)dev2->priv)){ | |
3267 | ||
3268 | chan = dev2->priv; | |
3269 | ||
3270 | if (chan->dlci_configured == DLCI_CONFIG_PENDING) { | |
3271 | if (fr_init_dlci(card, chan)){ | |
3272 | return 1; | |
3273 | } | |
3274 | } | |
3275 | ||
3276 | } | |
3277 | return 1; | |
3278 | } | |
3279 | ||
3280 | ||
3281 | static int fr_init_dlci (sdla_t *card, fr_channel_t *chan) | |
3282 | { | |
3283 | fr_dlc_conf_t cfg; | |
3284 | ||
3285 | memset(&cfg, 0, sizeof(cfg)); | |
3286 | ||
3287 | if ( chan->cir_status == CIR_DISABLED) { | |
3288 | ||
3289 | cfg.cir_fwd = cfg.cir_bwd = 16; | |
3290 | cfg.bc_fwd = cfg.bc_bwd = 16; | |
3291 | cfg.conf_flags = 0x0001; | |
3292 | ||
3293 | }else if (chan->cir_status == CIR_ENABLED) { | |
3294 | ||
3295 | cfg.cir_fwd = cfg.cir_bwd = chan->cir; | |
3296 | cfg.bc_fwd = cfg.bc_bwd = chan->bc; | |
3297 | cfg.be_fwd = cfg.be_bwd = chan->be; | |
3298 | cfg.conf_flags = 0x0000; | |
3299 | } | |
3300 | ||
3301 | if (fr_dlci_configure( card, &cfg , chan->dlci)){ | |
3302 | printk(KERN_INFO | |
3303 | "%s: DLCI Configure failed for %d\n", | |
3304 | card->devname, chan->dlci); | |
3305 | return 1; | |
3306 | } | |
3307 | ||
3308 | chan->dlci_configured = DLCI_CONFIGURED; | |
3309 | ||
3310 | /* Read the interface byte mapping into the channel | |
3311 | * structure. | |
3312 | */ | |
3313 | read_DLCI_IB_mapping( card, chan ); | |
3314 | ||
3315 | return 0; | |
3316 | } | |
3317 | /******* Miscellaneous ******************************************************/ | |
3318 | ||
3319 | /*============================================================================ | |
3320 | * Update channel state. | |
3321 | */ | |
3322 | static int update_chan_state(struct net_device* dev) | |
3323 | { | |
3324 | fr_channel_t* chan = dev->priv; | |
3325 | sdla_t* card = chan->card; | |
3326 | fr_mbox_t* mbox = card->mbox; | |
3327 | int retry = MAX_CMD_RETRY; | |
3328 | int err; | |
3329 | ||
3330 | do | |
3331 | { | |
3332 | mbox->cmd.command = FR_LIST_ACTIVE_DLCI; | |
3333 | mbox->cmd.length = 0; | |
3334 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
3335 | } while (err && retry-- && fr_event(card, err, mbox)); | |
3336 | ||
3337 | if (!err) { | |
3338 | ||
3339 | unsigned short* list = (void*)mbox->data; | |
3340 | int cnt = mbox->cmd.length / sizeof(short); | |
3341 | ||
3342 | err=1; | |
3343 | ||
3344 | for (; cnt; --cnt, ++list) { | |
3345 | ||
3346 | if (*list == chan->dlci) { | |
3347 | set_chan_state(dev, WAN_CONNECTED); | |
3348 | ||
3349 | ||
3350 | /* May 23 2000. NC | |
3351 | * When a dlci is added or restarted, | |
3352 | * the dlci_int_interface pointer must | |
3353 | * be reinitialized. */ | |
3354 | if (!chan->dlci_int_interface){ | |
3355 | err=fr_init_dlci (card,chan); | |
3356 | } | |
3357 | break; | |
3358 | } | |
3359 | } | |
3360 | } | |
3361 | ||
3362 | return err; | |
3363 | } | |
3364 | ||
3365 | /*============================================================================ | |
3366 | * Set channel state. | |
3367 | */ | |
3368 | static void set_chan_state(struct net_device* dev, int state) | |
3369 | { | |
3370 | fr_channel_t* chan = dev->priv; | |
3371 | sdla_t* card = chan->card; | |
3372 | ||
3373 | if (chan->common.state != state) { | |
3374 | ||
3375 | switch (state) { | |
3376 | ||
3377 | case WAN_CONNECTED: | |
3378 | printk(KERN_INFO | |
3379 | "%s: Interface %s: DLCI %d connected\n", | |
3380 | card->devname, dev->name, chan->dlci); | |
3381 | ||
3382 | /* If the interface was previoulsy down, | |
3383 | * bring it up, since the channel is active */ | |
3384 | ||
3385 | trigger_fr_poll (dev); | |
3386 | trigger_fr_arp (dev); | |
3387 | break; | |
3388 | ||
3389 | case WAN_CONNECTING: | |
3390 | printk(KERN_INFO | |
3391 | "%s: Interface %s: DLCI %d connecting\n", | |
3392 | card->devname, dev->name, chan->dlci); | |
3393 | break; | |
3394 | ||
3395 | case WAN_DISCONNECTED: | |
3396 | printk (KERN_INFO | |
3397 | "%s: Interface %s: DLCI %d disconnected!\n", | |
3398 | card->devname, dev->name, chan->dlci); | |
3399 | ||
3400 | /* If the interface is up, bring it down, | |
3401 | * since the channel is now disconnected */ | |
3402 | trigger_fr_poll (dev); | |
3403 | break; | |
3404 | } | |
3405 | ||
3406 | chan->common.state = state; | |
3407 | } | |
3408 | ||
3409 | chan->state_tick = jiffies; | |
3410 | } | |
3411 | ||
3412 | /*============================================================================ | |
3413 | * Find network device by its channel number. | |
3414 | * | |
3415 | * We need this critical flag because we change | |
3416 | * the dlci_to_dev_map outside the interrupt. | |
3417 | * | |
3418 | * NOTE: del_if() functions updates this array, it uses | |
3419 | * the spin locks to avoid corruption. | |
3420 | */ | |
3421 | static struct net_device* find_channel(sdla_t* card, unsigned dlci) | |
3422 | { | |
3423 | if(dlci > HIGHEST_VALID_DLCI) | |
3424 | return NULL; | |
3425 | ||
3426 | return(card->u.f.dlci_to_dev_map[dlci]); | |
3427 | } | |
3428 | ||
3429 | /*============================================================================ | |
3430 | * Check to see if a frame can be sent. If no transmit buffers available, | |
3431 | * enable transmit interrupts. | |
3432 | * | |
3433 | * Return: 1 - Tx buffer(s) available | |
3434 | * 0 - no buffers available | |
3435 | */ | |
3436 | static int is_tx_ready (sdla_t* card, fr_channel_t* chan) | |
3437 | { | |
3438 | unsigned char sb; | |
3439 | ||
3440 | if(card->hw.type == SDLA_S514) | |
3441 | return 1; | |
3442 | ||
3443 | sb = inb(card->hw.port); | |
3444 | if (sb & 0x02) | |
3445 | return 1; | |
3446 | ||
3447 | return 0; | |
3448 | } | |
3449 | ||
3450 | /*============================================================================ | |
3451 | * Convert decimal string to unsigned integer. | |
3452 | * If len != 0 then only 'len' characters of the string are converted. | |
3453 | */ | |
3454 | static unsigned int dec_to_uint (unsigned char* str, int len) | |
3455 | { | |
3456 | unsigned val; | |
3457 | ||
3458 | if (!len) | |
3459 | len = strlen(str); | |
3460 | ||
3461 | for (val = 0; len && is_digit(*str); ++str, --len) | |
3462 | val = (val * 10) + (*str - (unsigned)'0'); | |
3463 | ||
3464 | return val; | |
3465 | } | |
3466 | ||
3467 | ||
3468 | ||
3469 | /*============================================================================= | |
3470 | * Store a UDP management packet for later processing. | |
3471 | */ | |
3472 | ||
3473 | static int store_udp_mgmt_pkt(int udp_type, char udp_pkt_src, sdla_t* card, | |
3474 | struct sk_buff *skb, int dlci) | |
3475 | { | |
3476 | int udp_pkt_stored = 0; | |
3477 | ||
3478 | struct net_device *dev = find_channel(card, dlci); | |
3479 | fr_channel_t *chan; | |
3480 | ||
3481 | if (!dev || !(chan=dev->priv)) | |
3482 | return 1; | |
3483 | ||
3484 | if(!card->u.f.udp_pkt_lgth && (skb->len <= MAX_LGTH_UDP_MGNT_PKT)){ | |
3485 | card->u.f.udp_pkt_lgth = skb->len + chan->fr_header_len; | |
3486 | card->u.f.udp_type = udp_type; | |
3487 | card->u.f.udp_pkt_src = udp_pkt_src; | |
3488 | card->u.f.udp_dlci = dlci; | |
3489 | memcpy(card->u.f.udp_pkt_data, skb->data, skb->len); | |
3490 | card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UDP; | |
3491 | udp_pkt_stored = 1; | |
3492 | ||
3493 | }else{ | |
3494 | printk(KERN_INFO "ERROR: UDP packet not stored for DLCI %d\n", | |
3495 | dlci); | |
3496 | } | |
3497 | ||
3498 | if(udp_pkt_src == UDP_PKT_FRM_STACK){ | |
3499 | dev_kfree_skb_any(skb); | |
3500 | }else{ | |
3501 | dev_kfree_skb_any(skb); | |
3502 | } | |
3503 | ||
3504 | return(udp_pkt_stored); | |
3505 | } | |
3506 | ||
3507 | ||
3508 | /*============================================================================== | |
3509 | * Process UDP call of type FPIPE8ND | |
3510 | */ | |
3511 | static int process_udp_mgmt_pkt(sdla_t* card) | |
3512 | { | |
3513 | ||
3514 | int c_retry = MAX_CMD_RETRY; | |
3515 | unsigned char *buf; | |
3516 | unsigned char frames; | |
3517 | unsigned int len; | |
3518 | unsigned short buffer_length; | |
3519 | struct sk_buff *new_skb; | |
3520 | fr_mbox_t* mbox = card->mbox; | |
3521 | int err; | |
3522 | struct timeval tv; | |
3523 | int udp_mgmt_req_valid = 1; | |
3524 | struct net_device* dev; | |
3525 | fr_channel_t* chan; | |
3526 | fr_udp_pkt_t *fr_udp_pkt; | |
3527 | unsigned short num_trc_els; | |
3528 | fr_trc_el_t* ptr_trc_el; | |
3529 | fr_trc_el_t trc_el; | |
3530 | fpipemon_trc_t* fpipemon_trc; | |
3531 | ||
3532 | char udp_pkt_src = card->u.f.udp_pkt_src; | |
3533 | int dlci = card->u.f.udp_dlci; | |
3534 | ||
3535 | /* Find network interface for this packet */ | |
3536 | dev = find_channel(card, dlci); | |
3537 | if (!dev){ | |
3538 | card->u.f.udp_pkt_lgth = 0; | |
3539 | return 1; | |
3540 | } | |
3541 | if ((chan = dev->priv) == NULL){ | |
3542 | card->u.f.udp_pkt_lgth = 0; | |
3543 | return 1; | |
3544 | } | |
3545 | ||
3546 | /* If the UDP packet is from the network, we are going to have to | |
3547 | transmit a response. Before doing so, we must check to see that | |
3548 | we are not currently transmitting a frame (in 'if_send()') and | |
3549 | that we are not already in a 'delayed transmit' state. | |
3550 | */ | |
3551 | if(udp_pkt_src == UDP_PKT_FRM_NETWORK) { | |
3552 | if (check_tx_status(card,dev)){ | |
3553 | card->u.f.udp_pkt_lgth = 0; | |
3554 | return 1; | |
3555 | } | |
3556 | } | |
3557 | ||
3558 | fr_udp_pkt = (fr_udp_pkt_t *)card->u.f.udp_pkt_data; | |
3559 | ||
3560 | if(udp_pkt_src == UDP_PKT_FRM_NETWORK) { | |
3561 | ||
3562 | switch(fr_udp_pkt->cblock.command) { | |
3563 | ||
3564 | case FR_READ_MODEM_STATUS: | |
3565 | case FR_READ_STATUS: | |
3566 | case FPIPE_ROUTER_UP_TIME: | |
3567 | case FR_READ_ERROR_STATS: | |
3568 | case FPIPE_DRIVER_STAT_GEN: | |
3569 | case FR_READ_STATISTICS: | |
3570 | case FR_READ_ADD_DLC_STATS: | |
3571 | case FR_READ_CONFIG: | |
3572 | case FR_READ_CODE_VERSION: | |
3573 | udp_mgmt_req_valid = 1; | |
3574 | break; | |
3575 | default: | |
3576 | udp_mgmt_req_valid = 0; | |
3577 | break; | |
3578 | } | |
3579 | } | |
3580 | ||
3581 | if(!udp_mgmt_req_valid) { | |
3582 | /* set length to 0 */ | |
3583 | fr_udp_pkt->cblock.length = 0; | |
3584 | /* set return code */ | |
3585 | fr_udp_pkt->cblock.result = 0xCD; | |
3586 | ||
3587 | chan->drvstats_gen.UDP_PIPE_mgmt_direction_err ++; | |
3588 | ||
3589 | if (net_ratelimit()){ | |
3590 | printk(KERN_INFO | |
3591 | "%s: Warning, Illegal UDP command attempted from network: %x\n", | |
3592 | card->devname,fr_udp_pkt->cblock.command); | |
3593 | } | |
3594 | ||
3595 | } else { | |
3596 | ||
3597 | switch(fr_udp_pkt->cblock.command) { | |
3598 | ||
3599 | case FPIPE_ENABLE_TRACING: | |
3600 | if(!card->TracingEnabled) { | |
3601 | do { | |
3602 | mbox->cmd.command = FR_SET_TRACE_CONFIG; | |
3603 | mbox->cmd.length = 1; | |
3604 | mbox->cmd.dlci = 0x00; | |
3605 | mbox->data[0] = fr_udp_pkt->data[0] | | |
3606 | RESET_TRC; | |
3607 | err = sdla_exec(mbox) ? | |
3608 | mbox->cmd.result : CMD_TIMEOUT; | |
3609 | } while (err && c_retry-- && fr_event(card, err, | |
3610 | mbox)); | |
3611 | ||
3612 | if(err) { | |
3613 | card->TracingEnabled = 0; | |
3614 | /* set the return code */ | |
3615 | fr_udp_pkt->cblock.result = | |
3616 | mbox->cmd.result; | |
3617 | mbox->cmd.length = 0; | |
3618 | break; | |
3619 | } | |
3620 | ||
3621 | sdla_peek(&card->hw, NO_TRC_ELEMENTS_OFF, | |
3622 | &num_trc_els, 2); | |
3623 | sdla_peek(&card->hw, BASE_TRC_ELEMENTS_OFF, | |
3624 | &card->u.f.trc_el_base, 4); | |
3625 | card->u.f.curr_trc_el = card->u.f.trc_el_base; | |
3626 | card->u.f.trc_el_last = card->u.f.curr_trc_el + | |
3627 | ((num_trc_els - 1) * | |
3628 | sizeof(fr_trc_el_t)); | |
3629 | ||
3630 | /* Calculate the maximum trace data area in */ | |
3631 | /* the UDP packet */ | |
3632 | card->u.f.trc_bfr_space=(MAX_LGTH_UDP_MGNT_PKT - | |
3633 | //sizeof(fr_encap_hdr_t) - | |
3634 | sizeof(ip_pkt_t) - | |
3635 | sizeof(udp_pkt_t) - | |
3636 | sizeof(wp_mgmt_t) - | |
3637 | sizeof(cblock_t)); | |
3638 | ||
3639 | /* set return code */ | |
3640 | fr_udp_pkt->cblock.result = 0; | |
3641 | ||
3642 | } else { | |
3643 | /* set return code to line trace already | |
3644 | enabled */ | |
3645 | fr_udp_pkt->cblock.result = 1; | |
3646 | } | |
3647 | ||
3648 | mbox->cmd.length = 0; | |
3649 | card->TracingEnabled = 1; | |
3650 | break; | |
3651 | ||
3652 | ||
3653 | case FPIPE_DISABLE_TRACING: | |
3654 | if(card->TracingEnabled) { | |
3655 | ||
3656 | do { | |
3657 | mbox->cmd.command = FR_SET_TRACE_CONFIG; | |
3658 | mbox->cmd.length = 1; | |
3659 | mbox->cmd.dlci = 0x00; | |
3660 | mbox->data[0] = ~ACTIVATE_TRC; | |
3661 | err = sdla_exec(mbox) ? | |
3662 | mbox->cmd.result : CMD_TIMEOUT; | |
3663 | } while (err && c_retry-- && fr_event(card, err, mbox)); | |
3664 | } | |
3665 | ||
3666 | /* set return code */ | |
3667 | fr_udp_pkt->cblock.result = 0; | |
3668 | mbox->cmd.length = 0; | |
3669 | card->TracingEnabled = 0; | |
3670 | break; | |
3671 | ||
3672 | case FPIPE_GET_TRACE_INFO: | |
3673 | ||
3674 | /* Line trace cannot be performed on the 502 */ | |
3675 | if(!card->TracingEnabled) { | |
3676 | /* set return code */ | |
3677 | fr_udp_pkt->cblock.result = 1; | |
3678 | mbox->cmd.length = 0; | |
3679 | break; | |
3680 | } | |
3681 | ||
3682 | ptr_trc_el = (void *)card->u.f.curr_trc_el; | |
3683 | ||
3684 | buffer_length = 0; | |
3685 | fr_udp_pkt->data[0x00] = 0x00; | |
3686 | ||
3687 | for(frames = 0; frames < MAX_FRMS_TRACED; frames ++) { | |
3688 | ||
3689 | sdla_peek(&card->hw, (unsigned long)ptr_trc_el, | |
3690 | (void *)&trc_el.flag, | |
3691 | sizeof(fr_trc_el_t)); | |
3692 | if(trc_el.flag == 0x00) { | |
3693 | break; | |
3694 | } | |
3695 | if((card->u.f.trc_bfr_space - buffer_length) | |
3696 | < sizeof(fpipemon_trc_hdr_t)) { | |
3697 | fr_udp_pkt->data[0x00] |= MORE_TRC_DATA; | |
3698 | break; | |
3699 | } | |
3700 | ||
3701 | fpipemon_trc = | |
3702 | (fpipemon_trc_t *)&fr_udp_pkt->data[buffer_length]; | |
3703 | fpipemon_trc->fpipemon_trc_hdr.status = | |
3704 | trc_el.attr; | |
3705 | fpipemon_trc->fpipemon_trc_hdr.tmstamp = | |
3706 | trc_el.tmstamp; | |
3707 | fpipemon_trc->fpipemon_trc_hdr.length = | |
3708 | trc_el.length; | |
3709 | ||
3710 | if(!trc_el.offset || !trc_el.length) { | |
3711 | ||
3712 | fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x00; | |
3713 | ||
3714 | }else if((trc_el.length + sizeof(fpipemon_trc_hdr_t) + 1) > | |
3715 | (card->u.f.trc_bfr_space - buffer_length)){ | |
3716 | ||
3717 | fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x00; | |
3718 | fr_udp_pkt->data[0x00] |= MORE_TRC_DATA; | |
3719 | ||
3720 | }else { | |
3721 | fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x01; | |
3722 | sdla_peek(&card->hw, trc_el.offset, | |
3723 | fpipemon_trc->data, | |
3724 | trc_el.length); | |
3725 | } | |
3726 | ||
3727 | trc_el.flag = 0x00; | |
3728 | sdla_poke(&card->hw, (unsigned long)ptr_trc_el, | |
3729 | &trc_el.flag, 1); | |
3730 | ||
3731 | ptr_trc_el ++; | |
3732 | if((void *)ptr_trc_el > card->u.f.trc_el_last) | |
3733 | ptr_trc_el = (void*)card->u.f.trc_el_base; | |
3734 | ||
3735 | buffer_length += sizeof(fpipemon_trc_hdr_t); | |
3736 | if(fpipemon_trc->fpipemon_trc_hdr.data_passed) { | |
3737 | buffer_length += trc_el.length; | |
3738 | } | |
3739 | ||
3740 | if(fr_udp_pkt->data[0x00] & MORE_TRC_DATA) { | |
3741 | break; | |
3742 | } | |
3743 | } | |
3744 | ||
3745 | if(frames == MAX_FRMS_TRACED) { | |
3746 | fr_udp_pkt->data[0x00] |= MORE_TRC_DATA; | |
3747 | } | |
3748 | ||
3749 | card->u.f.curr_trc_el = (void *)ptr_trc_el; | |
3750 | ||
3751 | /* set the total number of frames passed */ | |
3752 | fr_udp_pkt->data[0x00] |= | |
3753 | ((frames << 1) & (MAX_FRMS_TRACED << 1)); | |
3754 | ||
3755 | /* set the data length and return code */ | |
3756 | fr_udp_pkt->cblock.length = mbox->cmd.length = buffer_length; | |
3757 | fr_udp_pkt->cblock.result = 0; | |
3758 | break; | |
3759 | ||
3760 | case FPIPE_FT1_READ_STATUS: | |
3761 | sdla_peek(&card->hw, 0xF020, | |
3762 | &fr_udp_pkt->data[0x00] , 2); | |
3763 | fr_udp_pkt->cblock.length = mbox->cmd.length = 2; | |
3764 | fr_udp_pkt->cblock.result = 0; | |
3765 | break; | |
3766 | ||
3767 | case FPIPE_FLUSH_DRIVER_STATS: | |
3768 | init_chan_statistics(chan); | |
3769 | init_global_statistics(card); | |
3770 | mbox->cmd.length = 0; | |
3771 | break; | |
3772 | ||
3773 | case FPIPE_ROUTER_UP_TIME: | |
3774 | do_gettimeofday(&tv); | |
3775 | chan->router_up_time = tv.tv_sec - | |
3776 | chan->router_start_time; | |
3777 | *(unsigned long *)&fr_udp_pkt->data = | |
3778 | chan->router_up_time; | |
3779 | mbox->cmd.length = fr_udp_pkt->cblock.length = 4; | |
3780 | fr_udp_pkt->cblock.result = 0; | |
3781 | break; | |
3782 | ||
3783 | case FPIPE_DRIVER_STAT_IFSEND: | |
3784 | memcpy(fr_udp_pkt->data, | |
3785 | &chan->drvstats_if_send.if_send_entry, | |
3786 | sizeof(if_send_stat_t)); | |
3787 | mbox->cmd.length = fr_udp_pkt->cblock.length =sizeof(if_send_stat_t); | |
3788 | fr_udp_pkt->cblock.result = 0; | |
3789 | break; | |
3790 | ||
3791 | case FPIPE_DRIVER_STAT_INTR: | |
3792 | ||
3793 | memcpy(fr_udp_pkt->data, | |
3794 | &card->statistics.isr_entry, | |
3795 | sizeof(global_stats_t)); | |
3796 | ||
3797 | memcpy(&fr_udp_pkt->data[sizeof(global_stats_t)], | |
3798 | &chan->drvstats_rx_intr.rx_intr_no_socket, | |
3799 | sizeof(rx_intr_stat_t)); | |
3800 | ||
3801 | mbox->cmd.length = fr_udp_pkt->cblock.length = | |
3802 | sizeof(global_stats_t) + | |
3803 | sizeof(rx_intr_stat_t); | |
3804 | fr_udp_pkt->cblock.result = 0; | |
3805 | break; | |
3806 | ||
3807 | case FPIPE_DRIVER_STAT_GEN: | |
3808 | memcpy(fr_udp_pkt->data, | |
3809 | &chan->drvstats_gen.UDP_PIPE_mgmt_kmalloc_err, | |
3810 | sizeof(pipe_mgmt_stat_t)); | |
3811 | ||
3812 | memcpy(&fr_udp_pkt->data[sizeof(pipe_mgmt_stat_t)], | |
3813 | &card->statistics, sizeof(global_stats_t)); | |
3814 | ||
3815 | mbox->cmd.length = fr_udp_pkt->cblock.length = sizeof(global_stats_t)+ | |
3816 | sizeof(rx_intr_stat_t); | |
3817 | fr_udp_pkt->cblock.result = 0; | |
3818 | break; | |
3819 | ||
3820 | ||
3821 | case FR_FT1_STATUS_CTRL: | |
3822 | if(fr_udp_pkt->data[0] == 1) { | |
3823 | if(rCount++ != 0 ){ | |
3824 | fr_udp_pkt->cblock.result = 0; | |
3825 | mbox->cmd.length = 1; | |
3826 | break; | |
3827 | } | |
3828 | } | |
3829 | ||
3830 | /* Disable FT1 MONITOR STATUS */ | |
3831 | if(fr_udp_pkt->data[0] == 0) { | |
3832 | if( --rCount != 0) { | |
3833 | fr_udp_pkt->cblock.result = 0; | |
3834 | mbox->cmd.length = 1; | |
3835 | break; | |
3836 | } | |
3837 | } | |
3838 | goto udp_mgmt_dflt; | |
3839 | ||
3840 | ||
3841 | default: | |
3842 | udp_mgmt_dflt: | |
3843 | do { | |
3844 | memcpy(&mbox->cmd, | |
3845 | &fr_udp_pkt->cblock.command, | |
3846 | sizeof(fr_cmd_t)); | |
3847 | if(mbox->cmd.length) { | |
3848 | memcpy(&mbox->data, | |
3849 | (char *)fr_udp_pkt->data, | |
3850 | mbox->cmd.length); | |
3851 | } | |
3852 | ||
3853 | err = sdla_exec(mbox) ? mbox->cmd.result : | |
3854 | CMD_TIMEOUT; | |
3855 | } while (err && c_retry-- && fr_event(card, err, mbox)); | |
3856 | ||
3857 | if(!err) | |
3858 | chan->drvstats_gen. | |
3859 | UDP_PIPE_mgmt_adptr_cmnd_OK ++; | |
3860 | else | |
3861 | chan->drvstats_gen. | |
3862 | UDP_PIPE_mgmt_adptr_cmnd_timeout ++; | |
3863 | ||
3864 | /* copy the result back to our buffer */ | |
3865 | memcpy(&fr_udp_pkt->cblock.command, | |
3866 | &mbox->cmd, sizeof(fr_cmd_t)); | |
3867 | ||
3868 | if(mbox->cmd.length) { | |
3869 | memcpy(&fr_udp_pkt->data, | |
3870 | &mbox->data, mbox->cmd.length); | |
3871 | } | |
3872 | } | |
3873 | } | |
3874 | ||
3875 | /* Fill UDP TTL */ | |
3876 | fr_udp_pkt->ip_pkt.ttl = card->wandev.ttl; | |
3877 | len = reply_udp(card->u.f.udp_pkt_data, mbox->cmd.length); | |
3878 | ||
3879 | if(udp_pkt_src == UDP_PKT_FRM_NETWORK) { | |
3880 | ||
3881 | chan->fr_header_len=2; | |
3882 | chan->fr_header[0]=Q922_UI; | |
3883 | chan->fr_header[1]=NLPID_IP; | |
3884 | ||
3885 | err = fr_send_data_header(card, dlci, 0, len, | |
3886 | card->u.f.udp_pkt_data,chan->fr_header_len); | |
3887 | if (err){ | |
3888 | chan->drvstats_gen.UDP_PIPE_mgmt_adptr_send_passed ++; | |
3889 | }else{ | |
3890 | chan->drvstats_gen.UDP_PIPE_mgmt_adptr_send_failed ++; | |
3891 | } | |
3892 | ||
3893 | } else { | |
3894 | /* Allocate socket buffer */ | |
3895 | if((new_skb = dev_alloc_skb(len)) != NULL) { | |
3896 | ||
3897 | /* copy data into new_skb */ | |
3898 | buf = skb_put(new_skb, len); | |
3899 | memcpy(buf, card->u.f.udp_pkt_data, len); | |
3900 | ||
3901 | chan->drvstats_gen. | |
3902 | UDP_PIPE_mgmt_passed_to_stack ++; | |
3903 | new_skb->dev = dev; | |
3904 | new_skb->protocol = htons(ETH_P_IP); | |
3905 | new_skb->mac.raw = new_skb->data; | |
3906 | netif_rx(new_skb); | |
3907 | ||
3908 | } else { | |
3909 | chan->drvstats_gen.UDP_PIPE_mgmt_no_socket ++; | |
3910 | printk(KERN_INFO | |
3911 | "%s: UDP mgmt cmnd, no socket buffers available!\n", | |
3912 | card->devname); | |
3913 | } | |
3914 | } | |
3915 | ||
3916 | card->u.f.udp_pkt_lgth = 0; | |
3917 | ||
3918 | return 1; | |
3919 | } | |
3920 | ||
3921 | /*============================================================================== | |
3922 | * Send Inverse ARP Request | |
3923 | */ | |
3924 | ||
3925 | int send_inarp_request(sdla_t *card, struct net_device *dev) | |
3926 | { | |
3927 | int err=0; | |
3928 | ||
3929 | arphdr_1490_t *ArpPacket; | |
3930 | arphdr_fr_t *arphdr; | |
3931 | fr_channel_t *chan = dev->priv; | |
3932 | struct in_device *in_dev; | |
3933 | ||
3934 | in_dev = dev->ip_ptr; | |
3935 | ||
3936 | if(in_dev != NULL ) { | |
3937 | ||
3938 | ArpPacket = kmalloc(sizeof(arphdr_1490_t) + sizeof(arphdr_fr_t), GFP_ATOMIC); | |
3939 | /* SNAP Header indicating ARP */ | |
3940 | ArpPacket->control = 0x03; | |
3941 | ArpPacket->pad = 0x00; | |
3942 | ArpPacket->NLPID = 0x80; | |
3943 | ArpPacket->OUI[0] = 0; | |
3944 | ArpPacket->OUI[1] = 0; | |
3945 | ArpPacket->OUI[2] = 0; | |
3946 | ArpPacket->PID = 0x0608; | |
3947 | ||
3948 | arphdr = (arphdr_fr_t *)(ArpPacket + 1); // Go to ARP Packet | |
3949 | ||
3950 | /* InARP request */ | |
3951 | arphdr->ar_hrd = 0x0F00; /* Frame Relay HW type */ | |
3952 | arphdr->ar_pro = 0x0008; /* IP Protocol */ | |
3953 | arphdr->ar_hln = 2; /* HW addr length */ | |
3954 | arphdr->ar_pln = 4; /* IP addr length */ | |
3955 | arphdr->ar_op = htons(0x08); /* InARP Request */ | |
3956 | arphdr->ar_sha = 0; /* src HW DLCI - Doesn't matter */ | |
3957 | if(in_dev->ifa_list != NULL) | |
3958 | arphdr->ar_sip = in_dev->ifa_list->ifa_local; /* Local Address */else | |
3959 | arphdr->ar_sip = 0; | |
3960 | arphdr->ar_tha = 0; /* dst HW DLCI - Doesn't matter */ | |
3961 | arphdr->ar_tip = 0; /* Remote Address -- what we want */ | |
3962 | ||
3963 | err = fr_send(card, chan->dlci, 0, sizeof(arphdr_1490_t) + sizeof(arphdr_fr_t), | |
3964 | (void *)ArpPacket); | |
3965 | ||
3966 | if (!err){ | |
3967 | printk(KERN_INFO "\n%s: Sending InARP request on DLCI %d.\n", | |
3968 | card->devname, chan->dlci); | |
3969 | clear_bit(ARP_CRIT,&card->wandev.critical); | |
3970 | } | |
3971 | ||
3972 | kfree(ArpPacket); | |
3973 | }else{ | |
3974 | printk(KERN_INFO "%s: INARP ERROR: %s doesn't have a local IP address!\n", | |
3975 | card->devname,dev->name); | |
3976 | return 1; | |
3977 | } | |
3978 | ||
3979 | return 0; | |
3980 | } | |
3981 | ||
3982 | ||
3983 | /*============================================================================== | |
3984 | * Check packet for ARP Type | |
3985 | */ | |
3986 | ||
3987 | int is_arp(void *buf) | |
3988 | { | |
3989 | arphdr_1490_t *arphdr = (arphdr_1490_t *)buf; | |
3990 | ||
3991 | if (arphdr->pad == 0x00 && | |
3992 | arphdr->NLPID == 0x80 && | |
3993 | arphdr->PID == 0x0608) | |
3994 | return 1; | |
3995 | else return 0; | |
3996 | } | |
3997 | ||
3998 | /*============================================================================== | |
3999 | * Process ARP Packet Type | |
4000 | */ | |
4001 | ||
4002 | int process_ARP(arphdr_1490_t *ArpPacket, sdla_t *card, struct net_device* dev) | |
4003 | { | |
4004 | ||
4005 | ||
4006 | arphdr_fr_t *arphdr = (arphdr_fr_t *)(ArpPacket + 1); /* Skip header */ | |
4007 | fr_rx_buf_ctl_t* frbuf = card->rxmb; | |
4008 | struct in_device *in_dev; | |
4009 | fr_channel_t *chan = dev->priv; | |
4010 | ||
4011 | /* Before we transmit ARP packet, we must check | |
4012 | * to see that we are not currently transmitting a | |
4013 | * frame (in 'if_send()') and that we are not | |
4014 | * already in a 'delayed transmit' state. */ | |
4015 | if (check_tx_status(card,dev)){ | |
4016 | if (net_ratelimit()){ | |
4017 | printk(KERN_INFO "%s: Disabling comminication to process ARP\n", | |
4018 | card->devname); | |
4019 | } | |
4020 | set_bit(ARP_CRIT,&card->wandev.critical); | |
4021 | return 0; | |
4022 | } | |
4023 | ||
4024 | in_dev = dev->ip_ptr; | |
4025 | ||
4026 | /* Check that IP addresses exist for our network address */ | |
4027 | if (in_dev == NULL || in_dev->ifa_list == NULL) | |
4028 | return -1; | |
4029 | ||
4030 | switch (ntohs(arphdr->ar_op)) { | |
4031 | ||
4032 | case 0x08: // Inverse ARP request -- Send Reply, add route. | |
4033 | ||
4034 | /* Check for valid Address */ | |
4035 | printk(KERN_INFO "%s: Recvd PtP addr -InArp Req: %u.%u.%u.%u\n", | |
4036 | card->devname, NIPQUAD(arphdr->ar_sip)); | |
4037 | ||
4038 | ||
4039 | /* Check that the network address is the same as ours, only | |
4040 | * if the netowrk mask is not 255.255.255.255. Otherwise | |
4041 | * this check would not make sense */ | |
4042 | ||
4043 | if (in_dev->ifa_list->ifa_mask != 0xFFFFFFFF && | |
4044 | (in_dev->ifa_list->ifa_mask & arphdr->ar_sip) != | |
4045 | (in_dev->ifa_list->ifa_mask & in_dev->ifa_list->ifa_local)){ | |
4046 | printk(KERN_INFO | |
4047 | "%s: Invalid PtP address. %u.%u.%u.%u InARP ignored.\n", | |
4048 | card->devname,NIPQUAD(arphdr->ar_sip)); | |
4049 | ||
4050 | printk(KERN_INFO "%s: mask %u.%u.%u.%u\n", | |
4051 | card->devname, NIPQUAD(in_dev->ifa_list->ifa_mask)); | |
4052 | printk(KERN_INFO "%s: local %u.%u.%u.%u\n", | |
4053 | card->devname,NIPQUAD(in_dev->ifa_list->ifa_local)); | |
4054 | return -1; | |
4055 | } | |
4056 | ||
4057 | if (in_dev->ifa_list->ifa_local == arphdr->ar_sip){ | |
4058 | printk(KERN_INFO | |
4059 | "%s: Local addr = PtP addr. InARP ignored.\n", | |
4060 | card->devname); | |
4061 | return -1; | |
4062 | } | |
4063 | ||
4064 | arphdr->ar_op = htons(0x09); /* InARP Reply */ | |
4065 | ||
4066 | /* Set addresses */ | |
4067 | arphdr->ar_tip = arphdr->ar_sip; | |
4068 | arphdr->ar_sip = in_dev->ifa_list->ifa_local; | |
4069 | ||
4070 | chan->ip_local = in_dev->ifa_list->ifa_local; | |
4071 | chan->ip_remote = arphdr->ar_sip; | |
4072 | ||
4073 | fr_send(card, frbuf->dlci, 0, frbuf->length, (void *)ArpPacket); | |
4074 | ||
4075 | if (test_bit(ARP_CRIT,&card->wandev.critical)){ | |
4076 | if (net_ratelimit()){ | |
4077 | printk(KERN_INFO "%s: ARP Processed Enabling Communication!\n", | |
4078 | card->devname); | |
4079 | } | |
4080 | } | |
4081 | clear_bit(ARP_CRIT,&card->wandev.critical); | |
4082 | ||
4083 | chan->ip_local = in_dev->ifa_list->ifa_local; | |
4084 | chan->ip_remote = arphdr->ar_sip; | |
4085 | ||
4086 | /* Add Route Flag */ | |
4087 | /* The route will be added in the polling routine so | |
4088 | that it is not interrupt context. */ | |
4089 | ||
4090 | chan->route_flag = ADD_ROUTE; | |
4091 | trigger_fr_poll (dev); | |
4092 | ||
4093 | break; | |
4094 | ||
4095 | case 0x09: // Inverse ARP reply | |
4096 | ||
4097 | /* Check for valid Address */ | |
4098 | printk(KERN_INFO "%s: Recvd PtP addr %u.%u.%u.%u -InArp Reply\n", | |
4099 | card->devname, NIPQUAD(arphdr->ar_sip)); | |
4100 | ||
4101 | ||
4102 | /* Compare network addresses, only if network mask | |
4103 | * is not 255.255.255.255 It would not make sense | |
4104 | * to perform this test if the mask was all 1's */ | |
4105 | ||
4106 | if (in_dev->ifa_list->ifa_mask != 0xffffffff && | |
4107 | (in_dev->ifa_list->ifa_mask & arphdr->ar_sip) != | |
4108 | (in_dev->ifa_list->ifa_mask & in_dev->ifa_list->ifa_local)) { | |
4109 | ||
4110 | printk(KERN_INFO "%s: Invalid PtP address. InARP ignored.\n", | |
4111 | card->devname); | |
4112 | return -1; | |
4113 | } | |
4114 | ||
4115 | /* Make sure that the received IP address is not | |
4116 | * the same as our own local address */ | |
4117 | if (in_dev->ifa_list->ifa_local == arphdr->ar_sip) { | |
4118 | printk(KERN_INFO "%s: Local addr = PtP addr. InARP ignored.\n", | |
4119 | card->devname); | |
4120 | return -1; | |
4121 | } | |
4122 | ||
4123 | chan->ip_local = in_dev->ifa_list->ifa_local; | |
4124 | chan->ip_remote = arphdr->ar_sip; | |
4125 | ||
4126 | /* Add Route Flag */ | |
4127 | /* The route will be added in the polling routine so | |
4128 | that it is not interrupt context. */ | |
4129 | ||
4130 | chan->route_flag = ADD_ROUTE; | |
4131 | chan->inarp = INARP_CONFIGURED; | |
4132 | trigger_fr_poll(dev); | |
4133 | ||
4134 | break; | |
4135 | default: | |
4136 | break; // ARP's and RARP's -- Shouldn't happen. | |
4137 | } | |
4138 | ||
4139 | return 0; | |
4140 | } | |
4141 | ||
4142 | ||
4143 | /*============================================================ | |
4144 | * trigger_fr_arp | |
4145 | * | |
4146 | * Description: | |
4147 | * Add an fr_arp() task into a arp | |
4148 | * timer handler for a specific dlci/interface. | |
4149 | * This will kick the fr_arp() routine | |
4150 | * within the specified time interval. | |
4151 | * | |
4152 | * Usage: | |
4153 | * This timer is used to send ARP requests at | |
4154 | * certain time intervals. | |
4155 | * Called by an interrupt to request an action | |
4156 | * at a later date. | |
4157 | */ | |
4158 | ||
4159 | static void trigger_fr_arp(struct net_device *dev) | |
4160 | { | |
4161 | fr_channel_t* chan = dev->priv; | |
4162 | ||
4163 | mod_timer(&chan->fr_arp_timer, jiffies + chan->inarp_interval * HZ); | |
4164 | return; | |
4165 | } | |
4166 | ||
4167 | ||
4168 | ||
4169 | /*============================================================================== | |
4170 | * ARP Request Action | |
4171 | * | |
4172 | * This funciton is called by timer interrupt to send an arp request | |
4173 | * to the remote end. | |
4174 | */ | |
4175 | ||
4176 | static void fr_arp (unsigned long data) | |
4177 | { | |
4178 | struct net_device *dev = (struct net_device *)data; | |
4179 | fr_channel_t *chan = dev->priv; | |
4180 | volatile sdla_t *card = chan->card; | |
4181 | fr508_flags_t* flags = card->flags; | |
4182 | ||
4183 | /* Send ARP packets for all devs' until | |
4184 | * ARP state changes to CONFIGURED */ | |
4185 | ||
4186 | if (chan->inarp == INARP_REQUEST && | |
4187 | chan->common.state == WAN_CONNECTED && | |
4188 | card->wandev.state == WAN_CONNECTED){ | |
4189 | set_bit(0,&chan->inarp_ready); | |
4190 | card->u.f.timer_int_enabled |= TMR_INT_ENABLED_ARP; | |
4191 | flags->imask |= FR_INTR_TIMER; | |
4192 | } | |
4193 | ||
4194 | return; | |
4195 | } | |
4196 | ||
4197 | ||
4198 | /*============================================================================== | |
4199 | * Perform the Interrupt Test by running the READ_CODE_VERSION command MAX_INTR_ | |
4200 | * TEST_COUNTER times. | |
4201 | */ | |
4202 | static int intr_test( sdla_t* card ) | |
4203 | { | |
4204 | fr_mbox_t* mb = card->mbox; | |
4205 | int err,i; | |
4206 | ||
4207 | err = fr_set_intr_mode(card, FR_INTR_READY, card->wandev.mtu, 0 ); | |
4208 | ||
4209 | if (err == CMD_OK) { | |
4210 | ||
4211 | for ( i = 0; i < MAX_INTR_TEST_COUNTER; i++ ) { | |
4212 | /* Run command READ_CODE_VERSION */ | |
4213 | mb->cmd.length = 0; | |
4214 | mb->cmd.command = FR_READ_CODE_VERSION; | |
4215 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; | |
4216 | if (err != CMD_OK) | |
4217 | fr_event(card, err, mb); | |
4218 | } | |
4219 | ||
4220 | } else { | |
4221 | return err; | |
4222 | } | |
4223 | ||
4224 | err = fr_set_intr_mode( card, 0, card->wandev.mtu, 0 ); | |
4225 | ||
4226 | if( err != CMD_OK ) | |
4227 | return err; | |
4228 | ||
4229 | return 0; | |
4230 | } | |
4231 | ||
4232 | /*============================================================================== | |
4233 | * Determine what type of UDP call it is. FPIPE8ND ? | |
4234 | */ | |
4235 | static int udp_pkt_type( struct sk_buff *skb, sdla_t* card ) | |
4236 | { | |
4237 | fr_udp_pkt_t *fr_udp_pkt = (fr_udp_pkt_t *)skb->data; | |
4238 | ||
4239 | /* Quick HACK */ | |
4240 | ||
4241 | ||
4242 | if((fr_udp_pkt->ip_pkt.protocol == UDPMGMT_UDP_PROTOCOL) && | |
4243 | (fr_udp_pkt->ip_pkt.ver_inet_hdr_length == 0x45) && | |
4244 | (fr_udp_pkt->udp_pkt.udp_dst_port == | |
4245 | ntohs(card->wandev.udp_port)) && | |
4246 | (fr_udp_pkt->wp_mgmt.request_reply == | |
4247 | UDPMGMT_REQUEST)) { | |
4248 | if(!strncmp(fr_udp_pkt->wp_mgmt.signature, | |
4249 | UDPMGMT_FPIPE_SIGNATURE, 8)){ | |
4250 | return UDP_FPIPE_TYPE; | |
4251 | } | |
4252 | } | |
4253 | return UDP_INVALID_TYPE; | |
4254 | } | |
4255 | ||
4256 | ||
4257 | /*============================================================================== | |
4258 | * Initializes the Statistics values in the fr_channel structure. | |
4259 | */ | |
4260 | void init_chan_statistics( fr_channel_t* chan) | |
4261 | { | |
4262 | memset(&chan->drvstats_if_send.if_send_entry, 0, | |
4263 | sizeof(if_send_stat_t)); | |
4264 | memset(&chan->drvstats_rx_intr.rx_intr_no_socket, 0, | |
4265 | sizeof(rx_intr_stat_t)); | |
4266 | memset(&chan->drvstats_gen.UDP_PIPE_mgmt_kmalloc_err, 0, | |
4267 | sizeof(pipe_mgmt_stat_t)); | |
4268 | } | |
4269 | ||
4270 | /*============================================================================== | |
4271 | * Initializes the Statistics values in the Sdla_t structure. | |
4272 | */ | |
4273 | void init_global_statistics( sdla_t* card ) | |
4274 | { | |
4275 | /* Intialize global statistics for a card */ | |
4276 | memset(&card->statistics.isr_entry, 0, sizeof(global_stats_t)); | |
4277 | } | |
4278 | ||
4279 | static void read_DLCI_IB_mapping( sdla_t* card, fr_channel_t* chan ) | |
4280 | { | |
4281 | fr_mbox_t* mbox = card->mbox; | |
4282 | int retry = MAX_CMD_RETRY; | |
4283 | dlci_IB_mapping_t* result; | |
4284 | int err, counter, found; | |
4285 | ||
4286 | do { | |
4287 | mbox->cmd.command = FR_READ_DLCI_IB_MAPPING; | |
4288 | mbox->cmd.length = 0; | |
4289 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
4290 | } while (err && retry-- && fr_event(card, err, mbox)); | |
4291 | ||
4292 | if( mbox->cmd.result != 0){ | |
4293 | printk(KERN_INFO "%s: Read DLCI IB Mapping failed\n", | |
4294 | chan->name); | |
4295 | } | |
4296 | ||
4297 | counter = mbox->cmd.length / sizeof(dlci_IB_mapping_t); | |
4298 | result = (void *)mbox->data; | |
4299 | ||
4300 | found = 0; | |
4301 | for (; counter; --counter, ++result) { | |
4302 | if ( result->dlci == chan->dlci ) { | |
4303 | chan->IB_addr = result->addr_value; | |
4304 | if(card->hw.type == SDLA_S514){ | |
4305 | chan->dlci_int_interface = | |
4306 | (void*)(card->hw.dpmbase + | |
4307 | chan->IB_addr); | |
4308 | }else{ | |
4309 | chan->dlci_int_interface = | |
4310 | (void*)(card->hw.dpmbase + | |
4311 | (chan->IB_addr & 0x00001FFF)); | |
4312 | ||
4313 | } | |
4314 | found = 1; | |
4315 | break; | |
4316 | } | |
4317 | } | |
4318 | if (!found) | |
4319 | printk( KERN_INFO "%s: DLCI %d not found by IB MAPPING cmd\n", | |
4320 | card->devname, chan->dlci); | |
4321 | } | |
4322 | ||
4323 | ||
4324 | ||
4325 | void s508_s514_lock(sdla_t *card, unsigned long *smp_flags) | |
4326 | { | |
4327 | if (card->hw.type != SDLA_S514){ | |
4328 | ||
4329 | spin_lock_irqsave(&card->wandev.lock, *smp_flags); | |
4330 | }else{ | |
4331 | spin_lock(&card->u.f.if_send_lock); | |
4332 | } | |
4333 | return; | |
4334 | } | |
4335 | ||
4336 | ||
4337 | void s508_s514_unlock(sdla_t *card, unsigned long *smp_flags) | |
4338 | { | |
4339 | if (card->hw.type != SDLA_S514){ | |
4340 | ||
4341 | spin_unlock_irqrestore (&card->wandev.lock, *smp_flags); | |
4342 | }else{ | |
4343 | spin_unlock(&card->u.f.if_send_lock); | |
4344 | } | |
4345 | return; | |
4346 | } | |
4347 | ||
4348 | ||
4349 | ||
4350 | /*---------------------------------------------------------------------- | |
4351 | RECEIVE INTERRUPT: BOTTOM HALF HANDLERS | |
4352 | ----------------------------------------------------------------------*/ | |
4353 | ||
4354 | ||
4355 | /*======================================================== | |
4356 | * bh_enqueue | |
4357 | * | |
4358 | * Description: | |
4359 | * Insert a received packet into a circular | |
4360 | * rx queue. This packet will be picked up | |
4361 | * by fr_bh() and sent up the stack to the | |
4362 | * user. | |
4363 | * | |
4364 | * Usage: | |
4365 | * This function is called by rx interrupt, | |
4366 | * in API mode. | |
4367 | * | |
4368 | */ | |
4369 | ||
4370 | static int bh_enqueue(struct net_device *dev, struct sk_buff *skb) | |
4371 | { | |
4372 | /* Check for full */ | |
4373 | fr_channel_t* chan = dev->priv; | |
4374 | sdla_t *card = chan->card; | |
4375 | ||
4376 | ||
4377 | if (atomic_read(&chan->bh_buff_used) == MAX_BH_BUFF){ | |
4378 | ++card->wandev.stats.rx_dropped; | |
4379 | dev_kfree_skb_any(skb); | |
4380 | return 1; | |
4381 | } | |
4382 | ||
4383 | ((bh_data_t *)&chan->bh_head[chan->bh_write])->skb = skb; | |
4384 | ||
4385 | if (chan->bh_write == (MAX_BH_BUFF-1)){ | |
4386 | chan->bh_write=0; | |
4387 | }else{ | |
4388 | ++chan->bh_write; | |
4389 | } | |
4390 | ||
4391 | atomic_inc(&chan->bh_buff_used); | |
4392 | ||
4393 | return 0; | |
4394 | } | |
4395 | ||
4396 | ||
4397 | /*======================================================== | |
4398 | * trigger_fr_bh | |
4399 | * | |
4400 | * Description: | |
4401 | * Kick the fr_bh() handler | |
4402 | * | |
4403 | * Usage: | |
4404 | * rx interrupt calls this function during | |
4405 | * the API mode. | |
4406 | */ | |
4407 | ||
4408 | static void trigger_fr_bh (fr_channel_t *chan) | |
4409 | { | |
4410 | if (!test_and_set_bit(0,&chan->tq_working)){ | |
4411 | wanpipe_queue_work(&chan->common.wanpipe_work); | |
4412 | } | |
4413 | } | |
4414 | ||
4415 | ||
4416 | /*======================================================== | |
4417 | * fr_bh | |
4418 | * | |
4419 | * Description: | |
4420 | * Frame relay receive BH handler. | |
4421 | * Dequeue data from the BH circular | |
4422 | * buffer and pass it up the API sock. | |
4423 | * | |
4424 | * Rationale: | |
4425 | * This fuction is used to offload the | |
4426 | * rx_interrupt during API operation mode. | |
4427 | * The fr_bh() function executes for each | |
4428 | * dlci/interface. | |
4429 | * | |
4430 | * Once receive interrupt copies data from the | |
4431 | * card into an skb buffer, the skb buffer | |
4432 | * is appended to a circular BH buffer. | |
4433 | * Then the interrupt kicks fr_bh() to finish the | |
4434 | * job at a later time (not within the interrupt). | |
4435 | * | |
4436 | * Usage: | |
4437 | * Interrupts use this to defer a task to | |
4438 | * a polling routine. | |
4439 | * | |
4440 | */ | |
4441 | ||
4442 | static void fr_bh(struct net_device * dev) | |
4443 | { | |
4444 | fr_channel_t* chan = dev->priv; | |
4445 | sdla_t *card = chan->card; | |
4446 | struct sk_buff *skb; | |
4447 | ||
4448 | if (atomic_read(&chan->bh_buff_used) == 0){ | |
4449 | clear_bit(0, &chan->tq_working); | |
4450 | return; | |
4451 | } | |
4452 | ||
4453 | while (atomic_read(&chan->bh_buff_used)){ | |
4454 | ||
4455 | if (chan->common.sk == NULL || chan->common.func == NULL){ | |
4456 | clear_bit(0, &chan->tq_working); | |
4457 | return; | |
4458 | } | |
4459 | ||
4460 | skb = ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb; | |
4461 | ||
4462 | if (skb != NULL){ | |
4463 | ||
4464 | if (chan->common.sk == NULL || chan->common.func == NULL){ | |
4465 | ++card->wandev.stats.rx_dropped; | |
4466 | ++chan->ifstats.rx_dropped; | |
4467 | dev_kfree_skb_any(skb); | |
4468 | fr_bh_cleanup(dev); | |
4469 | continue; | |
4470 | } | |
4471 | ||
4472 | if (chan->common.func(skb,dev,chan->common.sk) != 0){ | |
4473 | /* Sock full cannot send, queue us for | |
4474 | * another try */ | |
4475 | atomic_set(&chan->common.receive_block,1); | |
4476 | return; | |
4477 | }else{ | |
4478 | fr_bh_cleanup(dev); | |
4479 | } | |
4480 | }else{ | |
4481 | fr_bh_cleanup(dev); | |
4482 | } | |
4483 | } | |
4484 | clear_bit(0, &chan->tq_working); | |
4485 | ||
4486 | return; | |
4487 | } | |
4488 | ||
4489 | static int fr_bh_cleanup(struct net_device *dev) | |
4490 | { | |
4491 | fr_channel_t* chan = dev->priv; | |
4492 | ||
4493 | ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb = NULL; | |
4494 | ||
4495 | if (chan->bh_read == (MAX_BH_BUFF-1)){ | |
4496 | chan->bh_read=0; | |
4497 | }else{ | |
4498 | ++chan->bh_read; | |
4499 | } | |
4500 | ||
4501 | atomic_dec(&chan->bh_buff_used); | |
4502 | return 0; | |
4503 | } | |
4504 | ||
4505 | ||
4506 | /*---------------------------------------------------------------------- | |
4507 | POLL BH HANDLERS AND KICK ROUTINES | |
4508 | ----------------------------------------------------------------------*/ | |
4509 | ||
4510 | /*============================================================ | |
4511 | * trigger_fr_poll | |
4512 | * | |
4513 | * Description: | |
4514 | * Add a fr_poll() task into a tq_scheduler bh handler | |
4515 | * for a specific dlci/interface. This will kick | |
4516 | * the fr_poll() routine at a later time. | |
4517 | * | |
4518 | * Usage: | |
4519 | * Interrupts use this to defer a taks to | |
4520 | * a polling routine. | |
4521 | * | |
4522 | */ | |
4523 | static void trigger_fr_poll(struct net_device *dev) | |
4524 | { | |
4525 | fr_channel_t* chan = dev->priv; | |
4526 | schedule_work(&chan->fr_poll_work); | |
4527 | return; | |
4528 | } | |
4529 | ||
4530 | ||
4531 | /*============================================================ | |
4532 | * fr_poll | |
4533 | * | |
4534 | * Rationale: | |
4535 | * We cannot manipulate the routing tables, or | |
4536 | * ip addresses withing the interrupt. Therefore | |
4537 | * we must perform such actons outside an interrupt | |
4538 | * at a later time. | |
4539 | * | |
4540 | * Description: | |
4541 | * Frame relay polling routine, responsible for | |
4542 | * shutting down interfaces upon disconnect | |
4543 | * and adding/removing routes. | |
4544 | * | |
4545 | * Usage: | |
4546 | * This function is executed for each frame relay | |
4547 | * dlci/interface through a tq_schedule bottom half. | |
4548 | * | |
4549 | * trigger_fr_poll() function is used to kick | |
4550 | * the fr_poll routine. | |
4551 | */ | |
4552 | ||
4553 | static void fr_poll(struct net_device *dev) | |
4554 | { | |
4555 | ||
4556 | fr_channel_t* chan; | |
4557 | sdla_t *card; | |
4558 | u8 check_gateway=0; | |
4559 | ||
4560 | if (!dev || (chan = dev->priv) == NULL) | |
4561 | return; | |
4562 | ||
4563 | card = chan->card; | |
4564 | ||
4565 | /* (Re)Configuraiton is in progress, stop what you are | |
4566 | * doing and get out */ | |
4567 | if (test_bit(PERI_CRIT,&card->wandev.critical)){ | |
4568 | return; | |
4569 | } | |
4570 | ||
4571 | switch (chan->common.state){ | |
4572 | ||
4573 | case WAN_DISCONNECTED: | |
4574 | ||
4575 | if (test_bit(DYN_OPT_ON,&chan->interface_down) && | |
4576 | !test_bit(DEV_DOWN, &chan->interface_down) && | |
4577 | dev->flags&IFF_UP){ | |
4578 | ||
4579 | printk(KERN_INFO "%s: Interface %s is Down.\n", | |
4580 | card->devname,dev->name); | |
4581 | change_dev_flags(dev,dev->flags&~IFF_UP); | |
4582 | set_bit(DEV_DOWN, &chan->interface_down); | |
4583 | chan->route_flag = NO_ROUTE; | |
4584 | ||
4585 | }else{ | |
4586 | if (chan->inarp != INARP_NONE) | |
4587 | process_route(dev); | |
4588 | } | |
4589 | break; | |
4590 | ||
4591 | case WAN_CONNECTED: | |
4592 | ||
4593 | if (test_bit(DYN_OPT_ON,&chan->interface_down) && | |
4594 | test_bit(DEV_DOWN, &chan->interface_down) && | |
4595 | !(dev->flags&IFF_UP)){ | |
4596 | ||
4597 | printk(KERN_INFO "%s: Interface %s is Up.\n", | |
4598 | card->devname,dev->name); | |
4599 | ||
4600 | change_dev_flags(dev,dev->flags|IFF_UP); | |
4601 | clear_bit(DEV_DOWN, &chan->interface_down); | |
4602 | check_gateway=1; | |
4603 | } | |
4604 | ||
4605 | if (chan->inarp != INARP_NONE){ | |
4606 | process_route(dev); | |
4607 | check_gateway=1; | |
4608 | } | |
4609 | ||
4610 | if (chan->gateway && check_gateway) | |
4611 | add_gateway(card,dev); | |
4612 | ||
4613 | break; | |
4614 | ||
4615 | } | |
4616 | ||
4617 | return; | |
4618 | } | |
4619 | ||
4620 | /*============================================================== | |
4621 | * check_tx_status | |
4622 | * | |
4623 | * Rationale: | |
4624 | * We cannot transmit from an interrupt while | |
4625 | * the if_send is transmitting data. Therefore, | |
4626 | * we must check whether the tx buffers are | |
4627 | * begin used, before we transmit from an | |
4628 | * interrupt. | |
4629 | * | |
4630 | * Description: | |
4631 | * Checks whether it's safe to use the transmit | |
4632 | * buffers. | |
4633 | * | |
4634 | * Usage: | |
4635 | * ARP and UDP handling routines use this function | |
4636 | * because, they need to transmit data during | |
4637 | * an interrupt. | |
4638 | */ | |
4639 | ||
4640 | static int check_tx_status(sdla_t *card, struct net_device *dev) | |
4641 | { | |
4642 | ||
4643 | if (card->hw.type == SDLA_S514){ | |
4644 | if (test_bit(SEND_CRIT, (void*)&card->wandev.critical) || | |
4645 | test_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical)) { | |
4646 | return 1; | |
4647 | } | |
4648 | } | |
4649 | ||
4650 | if (netif_queue_stopped(dev) || (card->u.f.tx_interrupts_pending)) | |
4651 | return 1; | |
4652 | ||
4653 | return 0; | |
4654 | } | |
4655 | ||
4656 | /*=============================================================== | |
4657 | * move_dev_to_next | |
4658 | * | |
4659 | * Description: | |
4660 | * Move the dev pointer to the next location in the | |
4661 | * link list. Check if we are at the end of the | |
4662 | * list, if so start from the begining. | |
4663 | * | |
4664 | * Usage: | |
4665 | * Timer interrupt uses this function to efficiently | |
4666 | * step through the devices that need to send ARP data. | |
4667 | * | |
4668 | */ | |
4669 | ||
4670 | struct net_device *move_dev_to_next(sdla_t *card, struct net_device *dev) | |
4671 | { | |
4672 | if (card->wandev.new_if_cnt != 1){ | |
4673 | if (!*((struct net_device **)dev->priv)) | |
4674 | return card->wandev.dev; | |
4675 | else | |
4676 | return *((struct net_device **)dev->priv); | |
4677 | } | |
4678 | return dev; | |
4679 | } | |
4680 | ||
4681 | /*============================================================== | |
4682 | * trigger_config_fr | |
4683 | * | |
4684 | * Rationale: | |
4685 | * All commands must be performed inside of a | |
4686 | * interrupt. | |
4687 | * | |
4688 | * Description: | |
4689 | * Kick the config_fr() routine throught the | |
4690 | * timer interrupt. | |
4691 | */ | |
4692 | ||
4693 | ||
4694 | static void trigger_config_fr (sdla_t *card) | |
4695 | { | |
4696 | fr508_flags_t* flags = card->flags; | |
4697 | ||
4698 | card->u.f.timer_int_enabled |= TMR_INT_ENABLED_CONFIG; | |
4699 | flags->imask |= FR_INTR_TIMER; | |
4700 | } | |
4701 | ||
4702 | ||
4703 | /*============================================================== | |
4704 | * config_fr | |
4705 | * | |
4706 | * Rationale: | |
4707 | * All commands must be performed inside of a | |
4708 | * interrupt. | |
4709 | & | |
4710 | * Description: | |
4711 | * Configure a DLCI. This function is executed | |
4712 | * by a timer_interrupt. The if_open() function | |
4713 | * triggers it. | |
4714 | * | |
4715 | * Usage: | |
4716 | * new_if() collects all data necessary to | |
4717 | * configure the DLCI. It sets the chan->dlci_ready | |
4718 | * bit. When the if_open() function is executed | |
4719 | * it checks this bit, and if its set it triggers | |
4720 | * the timer interrupt to execute the config_fr() | |
4721 | * function. | |
4722 | */ | |
4723 | ||
4724 | static void config_fr (sdla_t *card) | |
4725 | { | |
4726 | struct net_device *dev; | |
4727 | fr_channel_t *chan; | |
4728 | ||
4729 | for (dev = card->wandev.dev; dev; | |
4730 | dev = *((struct net_device **)dev->priv)) { | |
4731 | ||
4732 | if ((chan=dev->priv) == NULL) | |
4733 | continue; | |
4734 | ||
4735 | if (!test_bit(0,&chan->config_dlci)) | |
4736 | continue; | |
4737 | ||
4738 | clear_bit(0,&chan->config_dlci); | |
4739 | ||
4740 | /* If signalling is set to NO, then setup | |
4741 | * DLCI addresses right away. Don't have to wait for | |
4742 | * link to connect. | |
4743 | */ | |
4744 | if (card->wandev.signalling == WANOPT_NO){ | |
4745 | printk(KERN_INFO "%s: Signalling set to NO: Mapping DLCI's\n", | |
4746 | card->wandev.name); | |
4747 | if (fr_init_dlci(card,chan)){ | |
4748 | printk(KERN_INFO "%s: ERROR: Failed to configure DLCI %i !\n", | |
4749 | card->devname, chan->dlci); | |
4750 | return; | |
4751 | } | |
4752 | } | |
4753 | ||
4754 | if (card->wandev.station == WANOPT_CPE) { | |
4755 | ||
4756 | update_chan_state(dev); | |
4757 | ||
4758 | /* CPE: issue full status enquiry */ | |
4759 | fr_issue_isf(card, FR_ISF_FSE); | |
4760 | ||
4761 | } else { | |
4762 | /* FR switch: activate DLCI(s) */ | |
4763 | ||
4764 | /* For Switch emulation we have to ADD and ACTIVATE | |
4765 | * the DLCI(s) that were configured with the SET_DLCI_ | |
4766 | * CONFIGURATION command. Add and Activate will fail if | |
4767 | * DLCI specified is not included in the list. | |
4768 | * | |
4769 | * Also If_open is called once for each interface. But | |
4770 | * it does not get in here for all the interface. So | |
4771 | * we have to pass the entire list of DLCI(s) to add | |
4772 | * activate routines. | |
4773 | */ | |
4774 | ||
4775 | if (!check_dlci_config (card, chan)){ | |
4776 | fr_add_dlci(card, chan->dlci); | |
4777 | fr_activate_dlci(card, chan->dlci); | |
4778 | } | |
4779 | } | |
4780 | ||
4781 | card->u.f.dlci_to_dev_map[chan->dlci] = dev; | |
4782 | } | |
4783 | return; | |
4784 | } | |
4785 | ||
4786 | ||
4787 | /*============================================================== | |
4788 | * config_fr | |
4789 | * | |
4790 | * Rationale: | |
4791 | * All commands must be executed during an interrupt. | |
4792 | * | |
4793 | * Description: | |
4794 | * Trigger uncofig_fr() function through | |
4795 | * the timer interrupt. | |
4796 | * | |
4797 | */ | |
4798 | ||
4799 | static void trigger_unconfig_fr(struct net_device *dev) | |
4800 | { | |
4801 | fr_channel_t *chan = dev->priv; | |
4802 | volatile sdla_t *card = chan->card; | |
a8178345 | 4803 | unsigned long timeout; |
1da177e4 LT |
4804 | fr508_flags_t* flags = card->flags; |
4805 | int reset_critical=0; | |
4806 | ||
4807 | if (test_bit(PERI_CRIT,(void*)&card->wandev.critical)){ | |
4808 | clear_bit(PERI_CRIT,(void*)&card->wandev.critical); | |
4809 | reset_critical=1; | |
4810 | } | |
4811 | ||
4812 | /* run unconfig_dlci() function | |
4813 | * throught the timer interrupt */ | |
4814 | set_bit(0,(void*)&chan->unconfig_dlci); | |
4815 | card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UNCONFIG; | |
4816 | flags->imask |= FR_INTR_TIMER; | |
4817 | ||
4818 | /* Wait for the command to complete */ | |
4819 | timeout = jiffies; | |
4820 | for(;;) { | |
4821 | ||
4822 | if(!(card->u.f.timer_int_enabled & TMR_INT_ENABLED_UNCONFIG)) | |
4823 | break; | |
4824 | ||
a8178345 | 4825 | if (time_after(jiffies, timeout + 1 * HZ)){ |
1da177e4 LT |
4826 | card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UNCONFIG; |
4827 | printk(KERN_INFO "%s: Failed to delete DLCI %i\n", | |
4828 | card->devname,chan->dlci); | |
4829 | break; | |
4830 | } | |
4831 | } | |
4832 | ||
4833 | if (reset_critical){ | |
4834 | set_bit(PERI_CRIT,(void*)&card->wandev.critical); | |
4835 | } | |
4836 | } | |
4837 | ||
4838 | /*============================================================== | |
4839 | * unconfig_fr | |
4840 | * | |
4841 | * Rationale: | |
4842 | * All commands must be executed during an interrupt. | |
4843 | * | |
4844 | * Description: | |
4845 | * Remove the dlci from firmware. | |
4846 | * This funciton is used in NODE shutdown. | |
4847 | */ | |
4848 | ||
4849 | static void unconfig_fr (sdla_t *card) | |
4850 | { | |
4851 | struct net_device *dev; | |
4852 | fr_channel_t *chan; | |
4853 | ||
4854 | for (dev = card->wandev.dev; dev; | |
4855 | dev = *((struct net_device **)dev->priv)){ | |
4856 | ||
4857 | if ((chan=dev->priv) == NULL) | |
4858 | continue; | |
4859 | ||
4860 | if (!test_bit(0,&chan->unconfig_dlci)) | |
4861 | continue; | |
4862 | ||
4863 | clear_bit(0,&chan->unconfig_dlci); | |
4864 | ||
4865 | if (card->wandev.station == WANOPT_NODE){ | |
4866 | printk(KERN_INFO "%s: Unconfiguring DLCI %i\n", | |
4867 | card->devname,chan->dlci); | |
4868 | fr_delete_dlci(card,chan->dlci); | |
4869 | } | |
4870 | card->u.f.dlci_to_dev_map[chan->dlci] = NULL; | |
4871 | } | |
4872 | } | |
4873 | ||
4874 | static int setup_fr_header(struct sk_buff **skb_orig, struct net_device* dev, | |
4875 | char op_mode) | |
4876 | { | |
4877 | struct sk_buff *skb = *skb_orig; | |
4878 | fr_channel_t *chan=dev->priv; | |
4879 | ||
4880 | if (op_mode == WANPIPE){ | |
4881 | ||
4882 | chan->fr_header[0]=Q922_UI; | |
4883 | ||
4884 | switch (htons(skb->protocol)){ | |
4885 | ||
4886 | case ETH_P_IP: | |
4887 | chan->fr_header[1]=NLPID_IP; | |
4888 | break; | |
4889 | default: | |
4890 | return -EINVAL; | |
4891 | } | |
4892 | ||
4893 | return 2; | |
4894 | } | |
4895 | ||
4896 | /* If we are in bridging mode, we must apply | |
4897 | * an Ethernet header */ | |
4898 | if (op_mode == BRIDGE || op_mode == BRIDGE_NODE){ | |
4899 | ||
4900 | ||
4901 | /* Encapsulate the packet as a bridged Ethernet frame. */ | |
4902 | #ifdef DEBUG | |
4903 | printk(KERN_INFO "%s: encapsulating skb for frame relay\n", | |
4904 | dev->name); | |
4905 | #endif | |
4906 | ||
4907 | chan->fr_header[0] = 0x03; | |
4908 | chan->fr_header[1] = 0x00; | |
4909 | chan->fr_header[2] = 0x80; | |
4910 | chan->fr_header[3] = 0x00; | |
4911 | chan->fr_header[4] = 0x80; | |
4912 | chan->fr_header[5] = 0xC2; | |
4913 | chan->fr_header[6] = 0x00; | |
4914 | chan->fr_header[7] = 0x07; | |
4915 | ||
4916 | /* Yuck. */ | |
4917 | skb->protocol = ETH_P_802_3; | |
4918 | return 8; | |
4919 | ||
4920 | } | |
4921 | ||
4922 | return 0; | |
4923 | } | |
4924 | ||
4925 | ||
4926 | static int check_dlci_config (sdla_t *card, fr_channel_t *chan) | |
4927 | { | |
4928 | fr_mbox_t* mbox = card->mbox; | |
4929 | int err=0; | |
4930 | fr_conf_t *conf=NULL; | |
4931 | unsigned short dlci_num = chan->dlci; | |
4932 | int dlci_offset=0; | |
4933 | struct net_device *dev = NULL; | |
4934 | ||
4935 | mbox->cmd.command = FR_READ_CONFIG; | |
4936 | mbox->cmd.length = 0; | |
4937 | mbox->cmd.dlci = dlci_num; | |
4938 | ||
4939 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
4940 | ||
4941 | if (err == CMD_OK){ | |
4942 | return 0; | |
4943 | } | |
4944 | ||
4945 | for (dev = card->wandev.dev; dev; | |
4946 | dev=*((struct net_device **)dev->priv)) | |
4947 | set_chan_state(dev,WAN_DISCONNECTED); | |
4948 | ||
4949 | printk(KERN_INFO "DLCI %i Not configured, configuring\n",dlci_num); | |
4950 | ||
4951 | mbox->cmd.command = FR_COMM_DISABLE; | |
4952 | mbox->cmd.length = 0; | |
4953 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
4954 | if (err != CMD_OK){ | |
4955 | fr_event(card, err, mbox); | |
4956 | return 2; | |
4957 | } | |
4958 | ||
4959 | printk(KERN_INFO "Disabled Communications \n"); | |
4960 | ||
4961 | mbox->cmd.command = FR_READ_CONFIG; | |
4962 | mbox->cmd.length = 0; | |
4963 | mbox->cmd.dlci = 0; | |
4964 | ||
4965 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
4966 | ||
4967 | if (err != CMD_OK){ | |
4968 | fr_event(card, err, mbox); | |
4969 | return 2; | |
4970 | } | |
4971 | ||
4972 | conf = (fr_conf_t *)mbox->data; | |
4973 | ||
4974 | dlci_offset=0; | |
4975 | for (dev = card->wandev.dev; dev; | |
4976 | dev = *((struct net_device **)dev->priv)) { | |
4977 | fr_channel_t *chan_tmp = dev->priv; | |
4978 | conf->dlci[dlci_offset] = chan_tmp->dlci; | |
4979 | dlci_offset++; | |
4980 | } | |
4981 | ||
4982 | printk(KERN_INFO "Got Fr configuration Buffer Length is %x Dlci %i Dlci Off %i\n", | |
4983 | mbox->cmd.length, | |
4984 | mbox->cmd.length > 0x20 ? conf->dlci[0] : -1, | |
4985 | dlci_offset ); | |
4986 | ||
4987 | mbox->cmd.length = 0x20 + dlci_offset*2; | |
4988 | ||
4989 | mbox->cmd.command = FR_SET_CONFIG; | |
4990 | mbox->cmd.dlci = 0; | |
4991 | ||
4992 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; | |
4993 | ||
4994 | if (err != CMD_OK){ | |
4995 | fr_event(card, err, mbox); | |
4996 | return 2; | |
4997 | } | |
4998 | ||
4999 | initialize_rx_tx_buffers (card); | |
5000 | ||
5001 | ||
5002 | printk(KERN_INFO "Configuraiton Succeded for new DLCI %i\n",dlci_num); | |
5003 | ||
5004 | if (fr_comm_enable (card)){ | |
5005 | return 2; | |
5006 | } | |
5007 | ||
5008 | printk(KERN_INFO "Enabling Communications \n"); | |
5009 | ||
5010 | for (dev = card->wandev.dev; dev; | |
5011 | dev = *((struct net_device **)dev->priv)) { | |
5012 | fr_channel_t *chan_tmp = dev->priv; | |
5013 | fr_init_dlci(card,chan_tmp); | |
5014 | fr_add_dlci(card, chan_tmp->dlci); | |
5015 | fr_activate_dlci(card, chan_tmp->dlci); | |
5016 | } | |
5017 | ||
5018 | printk(KERN_INFO "END OF CONFIGURAITON %i\n",dlci_num); | |
5019 | ||
5020 | return 1; | |
5021 | } | |
5022 | ||
5023 | static void initialize_rx_tx_buffers (sdla_t *card) | |
5024 | { | |
5025 | fr_buf_info_t* buf_info; | |
5026 | ||
5027 | if (card->hw.type == SDLA_S514) { | |
5028 | ||
5029 | buf_info = (void*)(card->hw.dpmbase + FR_MB_VECTOR + | |
5030 | FR508_RXBC_OFFS); | |
5031 | ||
5032 | card->rxmb = (void*)(buf_info->rse_next + card->hw.dpmbase); | |
5033 | ||
5034 | card->u.f.rxmb_base = | |
5035 | (void*)(buf_info->rse_base + card->hw.dpmbase); | |
5036 | ||
5037 | card->u.f.rxmb_last = | |
5038 | (void*)(buf_info->rse_base + | |
5039 | (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) + | |
5040 | card->hw.dpmbase); | |
5041 | }else{ | |
5042 | buf_info = (void*)(card->hw.dpmbase + FR508_RXBC_OFFS); | |
5043 | ||
5044 | card->rxmb = (void*)(buf_info->rse_next - | |
5045 | FR_MB_VECTOR + card->hw.dpmbase); | |
5046 | ||
5047 | card->u.f.rxmb_base = | |
5048 | (void*)(buf_info->rse_base - | |
5049 | FR_MB_VECTOR + card->hw.dpmbase); | |
5050 | ||
5051 | card->u.f.rxmb_last = | |
5052 | (void*)(buf_info->rse_base + | |
5053 | (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) - | |
5054 | FR_MB_VECTOR + card->hw.dpmbase); | |
5055 | } | |
5056 | ||
5057 | card->u.f.rx_base = buf_info->buf_base; | |
5058 | card->u.f.rx_top = buf_info->buf_top; | |
5059 | ||
5060 | card->u.f.tx_interrupts_pending = 0; | |
5061 | ||
5062 | return; | |
5063 | } | |
5064 | ||
5065 | ||
5066 | ||
5067 | MODULE_LICENSE("GPL"); | |
5068 | ||
5069 | /****** End *****************************************************************/ |