Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
isdn.h
Go to the documentation of this file.
1 /* $Id: isdn.h,v 1.125.2.3 2004/02/10 01:07:14 keil Exp $
2  *
3  * Main header for the Linux ISDN subsystem (linklevel).
4  *
5  * Copyright 1994,95,96 by Fritz Elfert ([email protected])
6  * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
7  * Copyright 1995,96 by Michael Hipp ([email protected])
8  *
9  * This software may be used and distributed according to the terms
10  * of the GNU General Public License, incorporated herein by reference.
11  *
12  */
13 #ifndef __ISDN_H__
14 #define __ISDN_H__
15 
16 
17 #include <linux/errno.h>
18 #include <linux/fs.h>
19 #include <linux/major.h>
20 #include <asm/io.h>
21 #include <linux/kernel.h>
22 #include <linux/signal.h>
23 #include <linux/slab.h>
24 #include <linux/timer.h>
25 #include <linux/wait.h>
26 #include <linux/tty.h>
27 #include <linux/tty_flip.h>
28 #include <linux/serial_reg.h>
29 #include <linux/fcntl.h>
30 #include <linux/types.h>
31 #include <linux/interrupt.h>
32 #include <linux/ip.h>
33 #include <linux/in.h>
34 #include <linux/netdevice.h>
35 #include <linux/etherdevice.h>
36 #include <linux/skbuff.h>
37 #include <linux/tcp.h>
38 #include <linux/mutex.h>
39 #include <uapi/linux/isdn.h>
40 
41 #define ISDN_TTY_MAJOR 43
42 #define ISDN_TTYAUX_MAJOR 44
43 #define ISDN_MAJOR 45
44 
45 /* The minor-devicenumbers for Channel 0 and 1 are used as arguments for
46  * physical Channel-Mapping, so they MUST NOT be changed without changing
47  * the correspondent code in isdn.c
48  */
49 
50 #define ISDN_MINOR_B 0
51 #define ISDN_MINOR_BMAX (ISDN_MAX_CHANNELS-1)
52 #define ISDN_MINOR_CTRL 64
53 #define ISDN_MINOR_CTRLMAX (64 + (ISDN_MAX_CHANNELS-1))
54 #define ISDN_MINOR_PPP 128
55 #define ISDN_MINOR_PPPMAX (128 + (ISDN_MAX_CHANNELS-1))
56 #define ISDN_MINOR_STATUS 255
57 
58 #ifdef CONFIG_ISDN_PPP
59 
60 #ifdef CONFIG_ISDN_PPP_VJ
61 # include <net/slhc_vj.h>
62 #endif
63 
64 #include <linux/ppp_defs.h>
65 #include <linux/ppp-ioctl.h>
66 
67 #include <linux/isdn_ppp.h>
68 #endif
69 
70 #ifdef CONFIG_ISDN_X25
71 # include <linux/concap.h>
72 #endif
73 
74 #include <linux/isdnif.h>
75 
76 #define ISDN_DRVIOCTL_MASK 0x7f /* Mask for Device-ioctl */
77 
78 /* Until now unused */
79 #define ISDN_SERVICE_VOICE 1
80 #define ISDN_SERVICE_AB 1<<1
81 #define ISDN_SERVICE_X21 1<<2
82 #define ISDN_SERVICE_G4 1<<3
83 #define ISDN_SERVICE_BTX 1<<4
84 #define ISDN_SERVICE_DFUE 1<<5
85 #define ISDN_SERVICE_X25 1<<6
86 #define ISDN_SERVICE_TTX 1<<7
87 #define ISDN_SERVICE_MIXED 1<<8
88 #define ISDN_SERVICE_FW 1<<9
89 #define ISDN_SERVICE_GTEL 1<<10
90 #define ISDN_SERVICE_BTXN 1<<11
91 #define ISDN_SERVICE_BTEL 1<<12
92 
93 /* Macros checking plain usage */
94 #define USG_NONE(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE)
95 #define USG_RAW(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW)
96 #define USG_MODEM(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM)
97 #define USG_VOICE(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)
98 #define USG_NET(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET)
99 #define USG_FAX(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_FAX)
100 #define USG_OUTGOING(x) ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING)
101 #define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \
102  ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE) )
103 
104 /* Timer-delays and scheduling-flags */
105 #define ISDN_TIMER_RES 4 /* Main Timer-Resolution */
106 #define ISDN_TIMER_02SEC (HZ/ISDN_TIMER_RES/5) /* Slow-Timer1 .2 sec */
107 #define ISDN_TIMER_1SEC (HZ/ISDN_TIMER_RES) /* Slow-Timer2 1 sec */
108 #define ISDN_TIMER_RINGING 5 /* tty RINGs = ISDN_TIMER_1SEC * this factor */
109 #define ISDN_TIMER_KEEPINT 10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */
110 #define ISDN_TIMER_MODEMREAD 1
111 #define ISDN_TIMER_MODEMPLUS 2
112 #define ISDN_TIMER_MODEMRING 4
113 #define ISDN_TIMER_MODEMXMIT 8
114 #define ISDN_TIMER_NETDIAL 16
115 #define ISDN_TIMER_NETHANGUP 32
116 #define ISDN_TIMER_CARRIER 256 /* Wait for Carrier */
117 #define ISDN_TIMER_FAST (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \
118  ISDN_TIMER_MODEMXMIT)
119 #define ISDN_TIMER_SLOW (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \
120  ISDN_TIMER_NETDIAL | ISDN_TIMER_CARRIER)
121 
122 /* Timeout-Values for isdn_net_dial() */
123 #define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
124 #define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
125 #define ISDN_TIMER_DTIMEOUT60 (60*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
126 
127 /* GLOBAL_FLAGS */
128 #define ISDN_GLOBAL_STOPPED 1
129 
130 /*=================== Start of ip-over-ISDN stuff =========================*/
131 
132 /* Feature- and status-flags for a net-interface */
133 #define ISDN_NET_CONNECTED 0x01 /* Bound to ISDN-Channel */
134 #define ISDN_NET_SECURE 0x02 /* Accept calls from phonelist only */
135 #define ISDN_NET_CALLBACK 0x04 /* activate callback */
136 #define ISDN_NET_CBHUP 0x08 /* hangup before callback */
137 #define ISDN_NET_CBOUT 0x10 /* remote machine does callback */
138 
139 #define ISDN_NET_MAGIC 0x49344C02 /* for paranoia-checking */
140 
141 /* Phone-list-element */
142 typedef struct {
143  void *next;
144  char num[ISDN_MSNLEN];
145 } isdn_net_phone;
146 
147 /*
148  Principles when extending structures for generic encapsulation protocol
149  ("concap") support:
150  - Stuff which is hardware specific (here i4l-specific) goes in
151  the netdev -> local structure (here: isdn_net_local)
152  - Stuff which is encapsulation protocol specific goes in the structure
153  which holds the linux device structure (here: isdn_net_device)
154 */
155 
156 /* Local interface-data */
157 typedef struct isdn_net_local_s {
158  ulong magic;
159  struct net_device_stats stats; /* Ethernet Statistics */
160  int isdn_device; /* Index to isdn-device */
161  int isdn_channel; /* Index to isdn-channel */
162  int ppp_slot; /* PPPD device slot number */
163  int pre_device; /* Preselected isdn-device */
164  int pre_channel; /* Preselected isdn-channel */
165  int exclusive; /* If non-zero idx to reserved chan.*/
166  int flags; /* Connection-flags */
167  int dialretry; /* Counter for Dialout-retries */
168  int dialmax; /* Max. Number of Dial-retries */
169  int cbdelay; /* Delay before Callback starts */
170  int dtimer; /* Timeout-counter for dialing */
171  char msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */
172  u_char cbhup; /* Flag: Reject Call before Callback*/
173  u_char dialstate; /* State for dialing */
174  u_char p_encap; /* Packet encapsulation */
175  /* 0 = Ethernet over ISDN */
176  /* 1 = RAW-IP */
177  /* 2 = IP with type field */
178  u_char l2_proto; /* Layer-2-protocol */
179  /* See ISDN_PROTO_L2..-constants in */
180  /* isdnif.h */
181  /* 0 = X75/LAPB with I-Frames */
182  /* 1 = X75/LAPB with UI-Frames */
183  /* 2 = X75/LAPB with BUI-Frames */
184  /* 3 = HDLC */
185  u_char l3_proto; /* Layer-3-protocol */
186  /* See ISDN_PROTO_L3..-constants in */
187  /* isdnif.h */
188  /* 0 = Transparent */
189  int huptimer; /* Timeout-counter for auto-hangup */
190  int charge; /* Counter for charging units */
191  ulong chargetime; /* Timer for Charging info */
192  int hupflags; /* Flags for charge-unit-hangup: */
193  /* bit0: chargeint is invalid */
194  /* bit1: Getting charge-interval */
195  /* bit2: Do charge-unit-hangup */
196  /* bit3: Do hangup even on incoming */
197  int outgoing; /* Flag: outgoing call */
198  int onhtime; /* Time to keep link up */
199  int chargeint; /* Interval between charge-infos */
200  int onum; /* Flag: at least 1 outgoing number */
201  int cps; /* current speed of this interface */
202  int transcount; /* byte-counter for cps-calculation */
203  int sqfull; /* Flag: netdev-queue overloaded */
204  ulong sqfull_stamp; /* Start-Time of overload */
205  ulong slavedelay; /* Dynamic bundling delaytime */
206  int triggercps; /* BogoCPS needed for trigger slave */
207  isdn_net_phone *phone[2]; /* List of remote-phonenumbers */
208  /* phone[0] = Incoming Numbers */
209  /* phone[1] = Outgoing Numbers */
210  isdn_net_phone *dial; /* Pointer to dialed number */
211  struct net_device *master; /* Ptr to Master device for slaves */
212  struct net_device *slave; /* Ptr to Slave device for masters */
213  struct isdn_net_local_s *next; /* Ptr to next link in bundle */
214  struct isdn_net_local_s *last; /* Ptr to last link in bundle */
215  struct isdn_net_dev_s *netdev; /* Ptr to netdev */
216  struct sk_buff_head super_tx_queue; /* List of supervisory frames to */
217  /* be transmitted asap */
218  atomic_t frame_cnt; /* number of frames currently */
219  /* queued in HL driver */
220  /* Ptr to orig. hard_header_cache */
221  spinlock_t xmit_lock; /* used to protect the xmit path of */
222  /* a particular channel (including */
223  /* the frame_cnt */
224 
225  int pppbind; /* ippp device for bindings */
226  int dialtimeout; /* How long shall we try on dialing? (jiffies) */
227  int dialwait; /* How long shall we wait after failed attempt? (jiffies) */
228  ulong dialstarted; /* jiffies of first dialing-attempt */
229  ulong dialwait_timer; /* jiffies of earliest next dialing-attempt */
230  int huptimeout; /* How long will the connection be up? (seconds) */
231 #ifdef CONFIG_ISDN_X25
232  struct concap_device_ops *dops; /* callbacks used by encapsulator */
233 #endif
234  /* use an own struct for that in later versions */
235  ulong cisco_myseq; /* Local keepalive seq. for Cisco */
236  ulong cisco_mineseen; /* returned keepalive seq. from remote */
237  ulong cisco_yourseq; /* Remote keepalive seq. for Cisco */
238  int cisco_keepalive_period; /* keepalive period */
239  ulong cisco_last_slarp_in; /* jiffie of last keepalive packet we received */
240  char cisco_line_state; /* state of line according to keepalive packets */
241  char cisco_debserint; /* debugging flag of cisco hdlc with slarp */
242  struct timer_list cisco_timer;
243  struct work_struct tqueue;
244 } isdn_net_local;
245 
246 /* the interface itself */
247 typedef struct isdn_net_dev_s {
248  isdn_net_local *local;
249  isdn_net_local *queue; /* circular list of all bundled
250  channels, which are currently
251  online */
252  spinlock_t queue_lock; /* lock to protect queue */
253  void *next; /* Pointer to next isdn-interface */
254  struct net_device *dev; /* interface to upper levels */
255 #ifdef CONFIG_ISDN_PPP
256  ippp_bundle * pb; /* pointer to the common bundle structure
257  * with the per-bundle data */
258 #endif
259 #ifdef CONFIG_ISDN_X25
260  struct concap_proto *cprot; /* connection oriented encapsulation protocol */
261 #endif
262 
263 } isdn_net_dev;
264 
265 /*===================== End of ip-over-ISDN stuff ===========================*/
266 
267 /*======================= Start of ISDN-tty stuff ===========================*/
268 
269 #define ISDN_ASYNC_MAGIC 0x49344C01 /* for paranoia-checking */
270 #define ISDN_SERIAL_XMIT_SIZE 1024 /* Default bufsize for write */
271 #define ISDN_SERIAL_XMIT_MAX 4000 /* Maximum bufsize for write */
272 
273 #ifdef CONFIG_ISDN_AUDIO
274 /* For using sk_buffs with audio we need some private variables
275  * within each sk_buff. For this purpose, we declare a struct here,
276  * and put it always at the private skb->cb data array. A few macros help
277  * accessing the variables.
278  */
279 typedef struct _isdn_audio_data {
280  unsigned short dle_count;
281  unsigned char lock;
282 } isdn_audio_data_t;
283 
284 #define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_data_t *)&skb->cb[0])->dle_count)
285 #define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_data_t *)&skb->cb[0])->lock)
286 #endif
287 
288 /* Private data of AT-command-interpreter */
289 typedef struct atemu {
290  u_char profile[ISDN_MODEM_NUMREG]; /* Modem-Regs. Profile 0 */
291  u_char mdmreg[ISDN_MODEM_NUMREG]; /* Modem-Registers */
292  char pmsn[ISDN_MSNLEN]; /* EAZ/MSNs Profile 0 */
293  char msn[ISDN_MSNLEN]; /* EAZ/MSN */
294  char plmsn[ISDN_LMSNLEN]; /* Listening MSNs Profile 0 */
295  char lmsn[ISDN_LMSNLEN]; /* Listening MSNs */
296  char cpn[ISDN_MSNLEN]; /* CalledPartyNumber on incoming call */
297  char connmsg[ISDN_CMSGLEN]; /* CONNECT-Msg from HL-Driver */
298 #ifdef CONFIG_ISDN_AUDIO
299  u_char vpar[10]; /* Voice-parameters */
300  int lastDLE; /* Flag for voice-coding: DLE seen */
301 #endif
302  int mdmcmdl; /* Length of Modem-Commandbuffer */
303  int pluscount; /* Counter for +++ sequence */
304  u_long lastplus; /* Timestamp of last + */
305  int carrierwait; /* Seconds of carrier waiting */
306  char mdmcmd[255]; /* Modem-Commandbuffer */
307  unsigned int charge; /* Charge units of current connection */
308 } atemu;
309 
310 /* Private data (similar to async_struct in <linux/serial.h>) */
311 typedef struct modem_info {
312  int magic;
313  struct tty_port port;
314  int x_char; /* xon/xoff character */
315  int mcr; /* Modem control register */
316  int msr; /* Modem status register */
317  int lsr; /* Line status register */
318  int line;
319  int online; /* 1 = B-Channel is up, drop data */
320  /* 2 = B-Channel is up, deliver d.*/
321  int dialing; /* Dial in progress or ATA */
322  int rcvsched; /* Receive needs schedule */
323  int isdn_driver; /* Index to isdn-driver */
324  int isdn_channel; /* Index to isdn-channel */
325  int drv_index; /* Index to dev->usage */
326  int ncarrier; /* Flag: schedule NO CARRIER */
327  unsigned char last_cause[8]; /* Last cause message */
328  unsigned char last_num[ISDN_MSNLEN];
329  /* Last phone-number */
330  unsigned char last_l2; /* Last layer-2 protocol */
331  unsigned char last_si; /* Last service */
332  unsigned char last_lhup; /* Last hangup local? */
333  unsigned char last_dir; /* Last direction (in or out) */
334  struct timer_list nc_timer; /* Timer for delayed NO CARRIER */
335  int send_outstanding;/* # of outstanding send-requests */
336  int xmit_size; /* max. # of chars in xmit_buf */
337  int xmit_count; /* # of chars in xmit_buf */
338  struct sk_buff_head xmit_queue; /* transmit queue */
339  atomic_t xmit_lock; /* Semaphore for isdn_tty_write */
340 #ifdef CONFIG_ISDN_AUDIO
341  int vonline; /* Voice-channel status */
342  /* Bit 0 = recording */
343  /* Bit 1 = playback */
344  /* Bit 2 = playback, DLE-ETX seen */
345  struct sk_buff_head dtmf_queue; /* queue for dtmf results */
346  void *adpcms; /* state for adpcm decompression */
347  void *adpcmr; /* state for adpcm compression */
348  void *dtmf_state; /* state for dtmf decoder */
349  void *silence_state; /* state for silence detection */
350 #endif
351 #ifdef CONFIG_ISDN_TTY_FAX
352  struct T30_s *fax; /* T30 Fax Group 3 data/interface */
353  int faxonline; /* Fax-channel status */
354 #endif
355  atemu emu; /* AT-emulator data */
356  spinlock_t readlock;
357 } modem_info;
358 
359 #define ISDN_MODEM_WINSIZE 8
360 
361 /* Description of one ISDN-tty */
362 typedef struct _isdn_modem {
363  int refcount; /* Number of opens */
364  struct tty_driver *tty_modem; /* tty-device */
365  struct tty_struct *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */
366  struct ktermios *modem_termios[ISDN_MAX_CHANNELS];
367  struct ktermios *modem_termios_locked[ISDN_MAX_CHANNELS];
368  modem_info info[ISDN_MAX_CHANNELS]; /* Private data */
369 } isdn_modem_t;
370 
371 /*======================= End of ISDN-tty stuff ============================*/
372 
373 /*======================== Start of V.110 stuff ============================*/
374 #define V110_BUFSIZE 1024
375 
376 typedef struct {
377  int nbytes; /* 1 Matrixbyte -> nbytes in stream */
378  int nbits; /* Number of used bits in streambyte */
379  unsigned char key; /* Bitmask in stream eg. 11 (nbits=2) */
380  int decodelen; /* Amount of data in decodebuf */
381  int SyncInit; /* Number of sync frames to send */
382  unsigned char *OnlineFrame; /* Precalculated V110 idle frame */
383  unsigned char *OfflineFrame; /* Precalculated V110 sync Frame */
384  int framelen; /* Length of frames */
385  int skbuser; /* Number of unacked userdata skbs */
386  int skbidle; /* Number of unacked idle/sync skbs */
387  int introducer; /* Local vars for decoder */
388  int dbit;
389  unsigned char b;
390  int skbres; /* space to reserve in outgoing skb */
391  int maxsize; /* maxbufsize of lowlevel driver */
392  unsigned char *encodebuf; /* temporary buffer for encoding */
393  unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices */
394 } isdn_v110_stream;
395 
396 /*========================= End of V.110 stuff =============================*/
397 
398 /*======================= Start of general stuff ===========================*/
399 
400 typedef struct {
401  char *next;
402  char *private;
403 } infostruct;
404 
405 #define DRV_FLAG_RUNNING 1
406 #define DRV_FLAG_REJBUS 2
407 #define DRV_FLAG_LOADED 4
408 
409 /* Description of hardware-level-driver */
410 typedef struct _isdn_driver {
411  ulong online; /* Channel-Online flags */
412  ulong flags; /* Misc driver Flags */
413  int locks; /* Number of locks for this driver */
414  int channels; /* Number of channels */
415  wait_queue_head_t st_waitq; /* Wait-Queue for status-read's */
416  int maxbufsize; /* Maximum Buffersize supported */
417  unsigned long pktcount; /* Until now: unused */
418  int stavail; /* Chars avail on Status-device */
419  isdn_if *interface; /* Interface to driver */
420  int *rcverr; /* Error-counters for B-Ch.-receive */
421  int *rcvcount; /* Byte-counters for B-Ch.-receive */
422 #ifdef CONFIG_ISDN_AUDIO
423  unsigned long DLEflag; /* Flags: Insert DLE at next read */
424 #endif
425  struct sk_buff_head *rpqueue; /* Pointers to start of Rcv-Queue */
426  wait_queue_head_t *rcv_waitq; /* Wait-Queues for B-Channel-Reads */
427  wait_queue_head_t *snd_waitq; /* Wait-Queue for B-Channel-Send's */
428  char msn2eaz[10][ISDN_MSNLEN]; /* Mapping-Table MSN->EAZ */
429 } isdn_driver_t;
430 
431 /* Main driver-data */
432 typedef struct isdn_devt {
433  struct module *owner;
434  spinlock_t lock;
435  unsigned short flags; /* Bitmapped Flags: */
436  int drivers; /* Current number of drivers */
437  int channels; /* Current number of channels */
438  int net_verbose; /* Verbose-Flag */
439  int modempoll; /* Flag: tty-read active */
440  spinlock_t timerlock;
441  int tflags; /* Timer-Flags: */
442  /* see ISDN_TIMER_..defines */
443  int global_flags;
444  infostruct *infochain; /* List of open info-devs. */
445  wait_queue_head_t info_waitq; /* Wait-Queue for isdninfo */
446  struct timer_list timer; /* Misc.-function Timer */
447  int chanmap[ISDN_MAX_CHANNELS]; /* Map minor->device-channel */
448  int drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index */
449  int usage[ISDN_MAX_CHANNELS]; /* Used by tty/ip/voice */
450  char num[ISDN_MAX_CHANNELS][ISDN_MSNLEN];
451  /* Remote number of active ch.*/
452  int m_idx[ISDN_MAX_CHANNELS]; /* Index for mdm.... */
453  isdn_driver_t *drv[ISDN_MAX_DRIVERS]; /* Array of drivers */
454  isdn_net_dev *netdev; /* Linked list of net-if's */
455  char drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID */
456  struct task_struct *profd; /* For iprofd */
457  isdn_modem_t mdm; /* tty-driver-data */
458  isdn_net_dev *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers */
459  isdn_net_dev *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers */
460  ulong ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes */
461  ulong obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes */
462  int v110emu[ISDN_MAX_CHANNELS]; /* V.110 emulator-mode 0=none */
463  atomic_t v110use[ISDN_MAX_CHANNELS]; /* Usage-Semaphore for stream */
464  isdn_v110_stream *v110[ISDN_MAX_CHANNELS]; /* V.110 private data */
465  struct mutex mtx; /* serialize list access*/
466  unsigned long global_features;
467 } isdn_dev;
468 
469 extern isdn_dev *dev;
470 
471 
472 #endif /* __ISDN_H__ */
Generated on Thu Jan 10 2013 14:51:41 for Linux Kernel by   doxygen 1.8.2