Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /***************************************************************************** |
| 2 | * sdla_ppp.c WANPIPE(tm) Multiprotocol WAN Link Driver. PPP module. |
| 3 | * |
| 4 | * Author: Nenad Corbic <ncorbic@sangoma.com> |
| 5 | * |
| 6 | * Copyright: (c) 1995-2001 Sangoma Technologies Inc. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License |
| 10 | * as published by the Free Software Foundation; either version |
| 11 | * 2 of the License, or (at your option) any later version. |
| 12 | * ============================================================================ |
| 13 | * Feb 28, 2001 Nenad Corbic o Updated if_tx_timeout() routine for |
| 14 | * 2.4.X kernels. |
| 15 | * Nov 29, 2000 Nenad Corbic o Added the 2.4.x kernel support: |
| 16 | * get_ip_address() function has moved |
| 17 | * into the ppp_poll() routine. It cannot |
| 18 | * be called from an interrupt. |
| 19 | * Nov 07, 2000 Nenad Corbic o Added security features for UDP debugging: |
| 20 | * Deny all and specify allowed requests. |
| 21 | * May 02, 2000 Nenad Corbic o Added the dynamic interface shutdown |
| 22 | * option. When the link goes down, the |
| 23 | * network interface IFF_UP flag is reset. |
| 24 | * Mar 06, 2000 Nenad Corbic o Bug Fix: corrupted mbox recovery. |
| 25 | * Feb 25, 2000 Nenad Corbic o Fixed the FT1 UDP debugger problem. |
| 26 | * Feb 09, 2000 Nenad Coribc o Shutdown bug fix. update() was called |
| 27 | * with NULL dev pointer: no check. |
| 28 | * Jan 24, 2000 Nenad Corbic o Disabled use of CMD complete inter. |
| 29 | * Dev 15, 1999 Nenad Corbic o Fixed up header files for 2.0.X kernels |
| 30 | * Oct 25, 1999 Nenad Corbic o Support for 2.0.X kernels |
| 31 | * Moved dynamic route processing into |
| 32 | * a polling routine. |
| 33 | * Oct 07, 1999 Nenad Corbic o Support for S514 PCI card. |
| 34 | * Gideon Hack o UPD and Updates executed using timer interrupt |
| 35 | * Sep 10, 1999 Nenad Corbic o Fixed up the /proc statistics |
| 36 | * Jul 20, 1999 Nenad Corbic o Remove the polling routines and use |
| 37 | * interrupts instead. |
| 38 | * Sep 17, 1998 Jaspreet Singh o Updates for 2.2.X Kernels. |
| 39 | * Aug 13, 1998 Jaspreet Singh o Improved Line Tracing. |
| 40 | * Jun 22, 1998 David Fong o Added remote IP address assignment |
| 41 | * Mar 15, 1998 Alan Cox o 2.1.8x basic port. |
| 42 | * Apr 16, 1998 Jaspreet Singh o using htons() for the IPX protocol. |
| 43 | * Dec 09, 1997 Jaspreet Singh o Added PAP and CHAP. |
| 44 | * o Implemented new routines like |
| 45 | * ppp_set_inbnd_auth(), ppp_set_outbnd_auth(), |
| 46 | * tokenize() and strstrip(). |
| 47 | * Nov 27, 1997 Jaspreet Singh o Added protection against enabling of irqs |
| 48 | * while they have been disabled. |
| 49 | * Nov 24, 1997 Jaspreet Singh o Fixed another RACE condition caused by |
| 50 | * disabling and enabling of irqs. |
| 51 | * o Added new counters for stats on disable/enable |
| 52 | * IRQs. |
| 53 | * Nov 10, 1997 Jaspreet Singh o Initialized 'skb->mac.raw' to 'skb->data' |
| 54 | * before every netif_rx(). |
| 55 | * o Free up the device structure in del_if(). |
| 56 | * Nov 07, 1997 Jaspreet Singh o Changed the delay to zero for Line tracing |
| 57 | * command. |
| 58 | * Oct 20, 1997 Jaspreet Singh o Added hooks in for Router UP time. |
| 59 | * Oct 16, 1997 Jaspreet Singh o The critical flag is used to maintain flow |
| 60 | * control by avoiding RACE conditions. The |
| 61 | * cli() and restore_flags() are taken out. |
| 62 | * A new structure, "ppp_private_area", is added |
| 63 | * to provide Driver Statistics. |
| 64 | * Jul 21, 1997 Jaspreet Singh o Protected calls to sdla_peek() by adding |
| 65 | * save_flags(), cli() and restore_flags(). |
| 66 | * Jul 07, 1997 Jaspreet Singh o Added configurable TTL for UDP packets |
| 67 | * o Added ability to discard mulitcast and |
| 68 | * broacast source addressed packets. |
| 69 | * Jun 27, 1997 Jaspreet Singh o Added FT1 monitor capabilities |
| 70 | * New case (0x25) statement in if_send routine. |
| 71 | * Added a global variable rCount to keep track |
| 72 | * of FT1 status enabled on the board. |
| 73 | * May 22, 1997 Jaspreet Singh o Added change in the PPP_SET_CONFIG command for |
| 74 | * 508 card to reflect changes in the new |
| 75 | * ppp508.sfm for supporting:continous transmission |
| 76 | * of Configure-Request packets without receiving a |
| 77 | * reply |
| 78 | * OR-ed 0x300 to conf_flags |
| 79 | * o Changed connect_tmout from 900 to 0 |
| 80 | * May 21, 1997 Jaspreet Singh o Fixed UDP Management for multiple boards |
| 81 | * Apr 25, 1997 Farhan Thawar o added UDP Management stuff |
| 82 | * Mar 11, 1997 Farhan Thawar Version 3.1.1 |
| 83 | * o fixed (+1) bug in rx_intr() |
| 84 | * o changed if_send() to return 0 if |
| 85 | * wandev.critical() is true |
| 86 | * o free socket buffer in if_send() if |
| 87 | * returning 0 |
| 88 | * Jan 15, 1997 Gene Kozin Version 3.1.0 |
| 89 | * o implemented exec() entry point |
| 90 | * Jan 06, 1997 Gene Kozin Initial version. |
| 91 | *****************************************************************************/ |
| 92 | |
| 93 | #include <linux/module.h> |
| 94 | #include <linux/kernel.h> /* printk(), and other useful stuff */ |
| 95 | #include <linux/stddef.h> /* offsetof(), etc. */ |
| 96 | #include <linux/errno.h> /* return codes */ |
| 97 | #include <linux/string.h> /* inline memset(), etc. */ |
| 98 | #include <linux/slab.h> /* kmalloc(), kfree() */ |
| 99 | #include <linux/wanrouter.h> /* WAN router definitions */ |
| 100 | #include <linux/wanpipe.h> /* WANPIPE common user API definitions */ |
| 101 | #include <linux/if_arp.h> /* ARPHRD_* defines */ |
| 102 | #include <asm/byteorder.h> /* htons(), etc. */ |
| 103 | #include <linux/in.h> /* sockaddr_in */ |
| 104 | |
| 105 | |
| 106 | #include <asm/uaccess.h> |
| 107 | #include <linux/inetdevice.h> |
| 108 | #include <linux/netdevice.h> |
| 109 | |
| 110 | #include <linux/if.h> |
| 111 | #include <linux/sdla_ppp.h> /* PPP firmware API definitions */ |
| 112 | #include <linux/sdlasfm.h> /* S514 Type Definition */ |
| 113 | /****** Defines & Macros ****************************************************/ |
| 114 | |
| 115 | #define PPP_DFLT_MTU 1500 /* default MTU */ |
| 116 | #define PPP_MAX_MTU 4000 /* maximum MTU */ |
| 117 | #define PPP_HDR_LEN 1 |
| 118 | |
| 119 | #define MAX_IP_ERRORS 100 |
| 120 | |
| 121 | #define CONNECT_TIMEOUT (90*HZ) /* link connection timeout */ |
| 122 | #define HOLD_DOWN_TIME (5*HZ) /* link hold down time : Changed from 30 to 5 */ |
| 123 | |
| 124 | /* For handle_IPXWAN() */ |
| 125 | #define CVHexToAscii(b) (((unsigned char)(b) > (unsigned char)9) ? ((unsigned char)'A' + ((unsigned char)(b) - (unsigned char)10)) : ((unsigned char)'0' + (unsigned char)(b))) |
| 126 | |
| 127 | /* Macro for enabling/disabling debugging comments */ |
| 128 | //#define NEX_DEBUG |
| 129 | #ifdef NEX_DEBUG |
| 130 | #define NEX_PRINTK(format, a...) printk(format, ## a) |
| 131 | #else |
| 132 | #define NEX_PRINTK(format, a...) |
| 133 | #endif /* NEX_DEBUG */ |
| 134 | |
| 135 | #define DCD(a) ( a & 0x08 ? "HIGH" : "LOW" ) |
| 136 | #define CTS(a) ( a & 0x20 ? "HIGH" : "LOW" ) |
| 137 | #define LCP(a) ( a == 0x09 ? "OPEN" : "CLOSED" ) |
| 138 | #define IP(a) ( a == 0x09 ? "ENABLED" : "DISABLED" ) |
| 139 | |
| 140 | #define TMR_INT_ENABLED_UPDATE 0x01 |
| 141 | #define TMR_INT_ENABLED_PPP_EVENT 0x02 |
| 142 | #define TMR_INT_ENABLED_UDP 0x04 |
| 143 | #define TMR_INT_ENABLED_CONFIG 0x20 |
| 144 | |
| 145 | /* Set Configuraton Command Definitions */ |
| 146 | #define PERCENT_TX_BUFF 60 |
| 147 | #define TIME_BETWEEN_CONF_REQ 30 |
| 148 | #define TIME_BETWEEN_PAP_CHAP_REQ 30 |
| 149 | #define WAIT_PAP_CHAP_WITHOUT_REPLY 300 |
| 150 | #define WAIT_AFTER_DCD_CTS_LOW 5 |
| 151 | #define TIME_DCD_CTS_LOW_AFTER_LNK_DOWN 10 |
| 152 | #define WAIT_DCD_HIGH_AFTER_ENABLE_COMM 900 |
| 153 | #define MAX_CONF_REQ_WITHOUT_REPLY 10 |
| 154 | #define MAX_TERM_REQ_WITHOUT_REPLY 2 |
| 155 | #define NUM_CONF_NAK_WITHOUT_REPLY 5 |
| 156 | #define NUM_AUTH_REQ_WITHOUT_REPLY 10 |
| 157 | |
| 158 | #define END_OFFSET 0x1F0 |
| 159 | |
| 160 | |
| 161 | /******Data Structures*****************************************************/ |
| 162 | |
| 163 | /* This structure is placed in the private data area of the device structure. |
| 164 | * The card structure used to occupy the private area but now the following |
| 165 | * structure will incorporate the card structure along with PPP specific data |
| 166 | */ |
| 167 | |
| 168 | typedef struct ppp_private_area |
| 169 | { |
| 170 | struct net_device *slave; |
| 171 | sdla_t* card; |
| 172 | unsigned long router_start_time; /*router start time in sec */ |
| 173 | unsigned long tick_counter; /*used for 5 second counter*/ |
| 174 | unsigned mc; /*multicast support on or off*/ |
| 175 | unsigned char enable_IPX; |
| 176 | unsigned long network_number; |
| 177 | unsigned char pap; |
| 178 | unsigned char chap; |
| 179 | unsigned char sysname[31]; /* system name for in-bnd auth*/ |
| 180 | unsigned char userid[511]; /* list of user ids */ |
| 181 | unsigned char passwd[511]; /* list of passwords */ |
| 182 | unsigned protocol; /* SKB Protocol */ |
| 183 | u32 ip_local; /* Local IP Address */ |
| 184 | u32 ip_remote; /* remote IP Address */ |
| 185 | |
| 186 | u32 ip_local_tmp; |
| 187 | u32 ip_remote_tmp; |
| 188 | |
| 189 | unsigned char timer_int_enabled; /* Who enabled the timer inter*/ |
| 190 | unsigned char update_comms_stats; /* Used by update function */ |
| 191 | unsigned long curr_trace_addr; /* Trace information */ |
| 192 | unsigned long start_trace_addr; |
| 193 | unsigned long end_trace_addr; |
| 194 | |
| 195 | unsigned char interface_down; /* Brind down interface when channel |
| 196 | goes down */ |
| 197 | unsigned long config_wait_timeout; /* After if_open() if in dynamic if mode, |
| 198 | wait a few seconds before configuring */ |
| 199 | |
| 200 | unsigned short udp_pkt_lgth; |
| 201 | char udp_pkt_src; |
| 202 | char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT]; |
| 203 | |
| 204 | /* PPP specific statistics */ |
| 205 | |
| 206 | if_send_stat_t if_send_stat; |
| 207 | rx_intr_stat_t rx_intr_stat; |
| 208 | pipe_mgmt_stat_t pipe_mgmt_stat; |
| 209 | |
| 210 | unsigned long router_up_time; |
| 211 | |
| 212 | /* Polling work queue entry. Each interface |
| 213 | * has its own work queue entry, which is used |
| 214 | * to defer events from the interrupt */ |
| 215 | struct work_struct poll_work; |
| 216 | struct timer_list poll_delay_timer; |
| 217 | |
| 218 | u8 gateway; |
| 219 | u8 config_ppp; |
| 220 | u8 ip_error; |
| 221 | |
| 222 | }ppp_private_area_t; |
| 223 | |
| 224 | /* variable for keeping track of enabling/disabling FT1 monitor status */ |
| 225 | static int rCount = 0; |
| 226 | |
| 227 | extern void disable_irq(unsigned int); |
| 228 | extern void enable_irq(unsigned int); |
| 229 | |
| 230 | /****** Function Prototypes *************************************************/ |
| 231 | |
| 232 | /* WAN link driver entry points. These are called by the WAN router module. */ |
| 233 | static int update(struct wan_device *wandev); |
| 234 | static int new_if(struct wan_device *wandev, struct net_device *dev, |
| 235 | wanif_conf_t *conf); |
| 236 | static int del_if(struct wan_device *wandev, struct net_device *dev); |
| 237 | |
| 238 | /* WANPIPE-specific entry points */ |
| 239 | static int wpp_exec (struct sdla *card, void *u_cmd, void *u_data); |
| 240 | |
| 241 | /* Network device interface */ |
| 242 | static int if_init(struct net_device *dev); |
| 243 | static int if_open(struct net_device *dev); |
| 244 | static int if_close(struct net_device *dev); |
| 245 | static int if_header(struct sk_buff *skb, struct net_device *dev, |
| 246 | unsigned short type, |
| 247 | void *daddr, void *saddr, unsigned len); |
| 248 | |
| 249 | static void if_tx_timeout(struct net_device *dev); |
| 250 | |
| 251 | static int if_rebuild_hdr(struct sk_buff *skb); |
| 252 | static struct net_device_stats *if_stats(struct net_device *dev); |
| 253 | static int if_send(struct sk_buff *skb, struct net_device *dev); |
| 254 | |
| 255 | |
| 256 | /* PPP firmware interface functions */ |
| 257 | static int ppp_read_version(sdla_t *card, char *str); |
| 258 | static int ppp_set_outbnd_auth(sdla_t *card, ppp_private_area_t *ppp_priv_area); |
| 259 | static int ppp_set_inbnd_auth(sdla_t *card, ppp_private_area_t *ppp_priv_area); |
| 260 | static int ppp_configure(sdla_t *card, void *data); |
| 261 | static int ppp_set_intr_mode(sdla_t *card, unsigned char mode); |
| 262 | static int ppp_comm_enable(sdla_t *card); |
| 263 | static int ppp_comm_disable(sdla_t *card); |
| 264 | static int ppp_comm_disable_shutdown(sdla_t *card); |
| 265 | static int ppp_get_err_stats(sdla_t *card); |
| 266 | static int ppp_send(sdla_t *card, void *data, unsigned len, unsigned proto); |
| 267 | static int ppp_error(sdla_t *card, int err, ppp_mbox_t *mb); |
| 268 | |
| 269 | static void wpp_isr(sdla_t *card); |
| 270 | static void rx_intr(sdla_t *card); |
| 271 | static void event_intr(sdla_t *card); |
| 272 | static void timer_intr(sdla_t *card); |
| 273 | |
| 274 | /* Background polling routines */ |
| 275 | static void process_route(sdla_t *card); |
| 276 | static void retrigger_comm(sdla_t *card); |
| 277 | |
| 278 | /* Miscellaneous functions */ |
| 279 | static int read_info( sdla_t *card ); |
| 280 | static int read_connection_info (sdla_t *card); |
| 281 | static void remove_route( sdla_t *card ); |
| 282 | static int config508(struct net_device *dev, sdla_t *card); |
| 283 | static void show_disc_cause(sdla_t * card, unsigned cause); |
| 284 | static int reply_udp( unsigned char *data, unsigned int mbox_len ); |
| 285 | static void process_udp_mgmt_pkt(sdla_t *card, struct net_device *dev, |
| 286 | ppp_private_area_t *ppp_priv_area); |
| 287 | static void init_ppp_tx_rx_buff( sdla_t *card ); |
| 288 | static int intr_test( sdla_t *card ); |
| 289 | static int udp_pkt_type( struct sk_buff *skb , sdla_t *card); |
| 290 | static void init_ppp_priv_struct( ppp_private_area_t *ppp_priv_area); |
| 291 | static void init_global_statistics( sdla_t *card ); |
| 292 | static int tokenize(char *str, char **tokens); |
| 293 | static char* strstrip(char *str, char *s); |
| 294 | static int chk_bcast_mcast_addr(sdla_t* card, struct net_device* dev, |
| 295 | struct sk_buff *skb); |
| 296 | |
| 297 | static int config_ppp (sdla_t *); |
| 298 | static void ppp_poll(struct net_device *dev); |
| 299 | static void trigger_ppp_poll(struct net_device *dev); |
| 300 | static void ppp_poll_delay (unsigned long dev_ptr); |
| 301 | |
| 302 | |
| 303 | static int Read_connection_info; |
| 304 | static int Intr_test_counter; |
| 305 | static unsigned short available_buffer_space; |
| 306 | |
| 307 | |
| 308 | /* IPX functions */ |
| 309 | static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, |
| 310 | unsigned char incoming); |
| 311 | static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_PX, |
| 312 | unsigned long network_number, unsigned short proto); |
| 313 | |
| 314 | /* Lock Functions */ |
| 315 | static void s508_lock (sdla_t *card, unsigned long *smp_flags); |
| 316 | static void s508_unlock (sdla_t *card, unsigned long *smp_flags); |
| 317 | |
| 318 | static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card, |
| 319 | struct sk_buff *skb, struct net_device* dev, |
| 320 | ppp_private_area_t* ppp_priv_area ); |
| 321 | static unsigned short calc_checksum (char *data, int len); |
| 322 | static void disable_comm (sdla_t *card); |
| 323 | static int detect_and_fix_tx_bug (sdla_t *card); |
| 324 | |
| 325 | /****** Public Functions ****************************************************/ |
| 326 | |
| 327 | /*============================================================================ |
| 328 | * PPP protocol initialization routine. |
| 329 | * |
| 330 | * This routine is called by the main WANPIPE module during setup. At this |
| 331 | * point adapter is completely initialized and firmware is running. |
| 332 | * o read firmware version (to make sure it's alive) |
| 333 | * o configure adapter |
| 334 | * o initialize protocol-specific fields of the adapter data space. |
| 335 | * |
| 336 | * Return: 0 o.k. |
| 337 | * < 0 failure. |
| 338 | */ |
| 339 | int wpp_init(sdla_t *card, wandev_conf_t *conf) |
| 340 | { |
| 341 | ppp_flags_t *flags; |
| 342 | union |
| 343 | { |
| 344 | char str[80]; |
| 345 | } u; |
| 346 | |
| 347 | /* Verify configuration ID */ |
| 348 | if (conf->config_id != WANCONFIG_PPP) { |
| 349 | |
| 350 | printk(KERN_INFO "%s: invalid configuration ID %u!\n", |
| 351 | card->devname, conf->config_id); |
| 352 | return -EINVAL; |
| 353 | |
| 354 | } |
| 355 | |
| 356 | /* Initialize miscellaneous pointers to structures on the adapter */ |
| 357 | switch (card->hw.type) { |
| 358 | |
| 359 | case SDLA_S508: |
| 360 | card->mbox =(void*)(card->hw.dpmbase + PPP508_MB_OFFS); |
| 361 | card->flags=(void*)(card->hw.dpmbase + PPP508_FLG_OFFS); |
| 362 | break; |
| 363 | |
| 364 | case SDLA_S514: |
| 365 | card->mbox =(void*)(card->hw.dpmbase + PPP514_MB_OFFS); |
| 366 | card->flags=(void*)(card->hw.dpmbase + PPP514_FLG_OFFS); |
| 367 | break; |
| 368 | |
| 369 | default: |
| 370 | return -EINVAL; |
| 371 | |
| 372 | } |
| 373 | flags = card->flags; |
| 374 | |
| 375 | /* Read firmware version. Note that when adapter initializes, it |
| 376 | * clears the mailbox, so it may appear that the first command was |
| 377 | * executed successfully when in fact it was merely erased. To work |
| 378 | * around this, we execute the first command twice. |
| 379 | */ |
| 380 | if (ppp_read_version(card, NULL) || ppp_read_version(card, u.str)) |
| 381 | return -EIO; |
| 382 | |
| 383 | printk(KERN_INFO "%s: running PPP firmware v%s\n",card->devname, u.str); |
| 384 | /* Adjust configuration and set defaults */ |
| 385 | card->wandev.mtu = (conf->mtu) ? |
| 386 | min_t(unsigned int, conf->mtu, PPP_MAX_MTU) : PPP_DFLT_MTU; |
| 387 | |
| 388 | card->wandev.bps = conf->bps; |
| 389 | card->wandev.interface = conf->interface; |
| 390 | card->wandev.clocking = conf->clocking; |
| 391 | card->wandev.station = conf->station; |
| 392 | card->isr = &wpp_isr; |
| 393 | card->poll = NULL; |
| 394 | card->exec = &wpp_exec; |
| 395 | card->wandev.update = &update; |
| 396 | card->wandev.new_if = &new_if; |
| 397 | card->wandev.del_if = &del_if; |
| 398 | card->wandev.udp_port = conf->udp_port; |
| 399 | card->wandev.ttl = conf->ttl; |
| 400 | card->wandev.state = WAN_DISCONNECTED; |
| 401 | card->disable_comm = &disable_comm; |
| 402 | card->irq_dis_if_send_count = 0; |
| 403 | card->irq_dis_poll_count = 0; |
| 404 | card->u.p.authenticator = conf->u.ppp.authenticator; |
| 405 | card->u.p.ip_mode = conf->u.ppp.ip_mode ? |
| 406 | conf->u.ppp.ip_mode : WANOPT_PPP_STATIC; |
| 407 | card->TracingEnabled = 0; |
| 408 | Read_connection_info = 1; |
| 409 | |
| 410 | /* initialize global statistics */ |
| 411 | init_global_statistics( card ); |
| 412 | |
| 413 | |
| 414 | |
| 415 | if (!card->configured){ |
| 416 | int err; |
| 417 | |
| 418 | Intr_test_counter = 0; |
| 419 | err = intr_test(card); |
| 420 | |
| 421 | if(err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) { |
| 422 | printk("%s: Interrupt Test Failed, Counter: %i\n", |
| 423 | card->devname, Intr_test_counter); |
| 424 | printk( "%s: Please choose another interrupt\n",card->devname); |
| 425 | return -EIO; |
| 426 | } |
| 427 | |
| 428 | printk(KERN_INFO "%s: Interrupt Test Passed, Counter: %i\n", |
| 429 | card->devname, Intr_test_counter); |
| 430 | card->configured = 1; |
| 431 | } |
| 432 | |
| 433 | ppp_set_intr_mode(card, PPP_INTR_TIMER); |
| 434 | |
| 435 | /* Turn off the transmit and timer interrupt */ |
| 436 | flags->imask &= ~PPP_INTR_TIMER; |
| 437 | |
| 438 | printk(KERN_INFO "\n"); |
| 439 | |
| 440 | return 0; |
| 441 | } |
| 442 | |
| 443 | /******* WAN Device Driver Entry Points *************************************/ |
| 444 | |
| 445 | /*============================================================================ |
| 446 | * Update device status & statistics. |
| 447 | */ |
| 448 | static int update(struct wan_device *wandev) |
| 449 | { |
| 450 | sdla_t* card = wandev->private; |
| 451 | struct net_device* dev; |
| 452 | volatile ppp_private_area_t *ppp_priv_area; |
| 453 | ppp_flags_t *flags = card->flags; |
| 454 | unsigned long timeout; |
| 455 | |
| 456 | /* sanity checks */ |
| 457 | if ((wandev == NULL) || (wandev->private == NULL)) |
| 458 | return -EFAULT; |
| 459 | |
| 460 | if (wandev->state == WAN_UNCONFIGURED) |
| 461 | return -ENODEV; |
| 462 | |
| 463 | /* Shutdown bug fix. This function can be |
| 464 | * called with NULL dev pointer during |
| 465 | * shutdown |
| 466 | */ |
| 467 | if ((dev=card->wandev.dev) == NULL){ |
| 468 | return -ENODEV; |
| 469 | } |
| 470 | |
| 471 | if ((ppp_priv_area=dev->priv) == NULL){ |
| 472 | return -ENODEV; |
| 473 | } |
| 474 | |
| 475 | ppp_priv_area->update_comms_stats = 2; |
| 476 | ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_UPDATE; |
| 477 | flags->imask |= PPP_INTR_TIMER; |
| 478 | |
| 479 | /* wait a maximum of 1 second for the statistics to be updated */ |
| 480 | timeout = jiffies; |
| 481 | for(;;) { |
| 482 | if(ppp_priv_area->update_comms_stats == 0){ |
| 483 | break; |
| 484 | } |
| 485 | if ((jiffies - timeout) > (1 * HZ)){ |
| 486 | ppp_priv_area->update_comms_stats = 0; |
| 487 | ppp_priv_area->timer_int_enabled &= |
| 488 | ~TMR_INT_ENABLED_UPDATE; |
| 489 | return -EAGAIN; |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | return 0; |
| 494 | } |
| 495 | |
| 496 | /*============================================================================ |
| 497 | * Create new logical channel. |
| 498 | * This routine is called by the router when ROUTER_IFNEW IOCTL is being |
| 499 | * handled. |
| 500 | * o parse media- and hardware-specific configuration |
| 501 | * o make sure that a new channel can be created |
| 502 | * o allocate resources, if necessary |
| 503 | * o prepare network device structure for registaration. |
| 504 | * |
| 505 | * Return: 0 o.k. |
| 506 | * < 0 failure (channel will not be created) |
| 507 | */ |
| 508 | static int new_if(struct wan_device *wandev, struct net_device *dev, |
| 509 | wanif_conf_t *conf) |
| 510 | { |
| 511 | sdla_t *card = wandev->private; |
| 512 | ppp_private_area_t *ppp_priv_area; |
| 513 | |
| 514 | if (wandev->ndev) |
| 515 | return -EEXIST; |
| 516 | |
| 517 | |
| 518 | printk(KERN_INFO "%s: Configuring Interface: %s\n", |
| 519 | card->devname, conf->name); |
| 520 | |
| 521 | if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) { |
| 522 | |
| 523 | printk(KERN_INFO "%s: Invalid interface name!\n", |
| 524 | card->devname); |
| 525 | return -EINVAL; |
| 526 | |
| 527 | } |
| 528 | |
| 529 | /* allocate and initialize private data */ |
| 530 | ppp_priv_area = kmalloc(sizeof(ppp_private_area_t), GFP_KERNEL); |
| 531 | |
| 532 | if( ppp_priv_area == NULL ) |
| 533 | return -ENOMEM; |
| 534 | |
| 535 | memset(ppp_priv_area, 0, sizeof(ppp_private_area_t)); |
| 536 | |
| 537 | ppp_priv_area->card = card; |
| 538 | |
| 539 | /* initialize data */ |
| 540 | strcpy(card->u.p.if_name, conf->name); |
| 541 | |
| 542 | /* initialize data in ppp_private_area structure */ |
| 543 | |
| 544 | init_ppp_priv_struct( ppp_priv_area ); |
| 545 | |
| 546 | ppp_priv_area->mc = conf->mc; |
| 547 | ppp_priv_area->pap = conf->pap; |
| 548 | ppp_priv_area->chap = conf->chap; |
| 549 | |
| 550 | /* Option to bring down the interface when |
| 551 | * the link goes down */ |
| 552 | if (conf->if_down){ |
| 553 | set_bit(DYN_OPT_ON,&ppp_priv_area->interface_down); |
| 554 | printk("%s: Dynamic interface configuration enabled\n", |
| 555 | card->devname); |
| 556 | } |
| 557 | |
| 558 | /* If no user ids are specified */ |
| 559 | if(!strlen(conf->userid) && (ppp_priv_area->pap||ppp_priv_area->chap)){ |
| 560 | kfree(ppp_priv_area); |
| 561 | return -EINVAL; |
| 562 | } |
| 563 | |
| 564 | /* If no passwords are specified */ |
| 565 | if(!strlen(conf->passwd) && (ppp_priv_area->pap||ppp_priv_area->chap)){ |
| 566 | kfree(ppp_priv_area); |
| 567 | return -EINVAL; |
| 568 | } |
| 569 | |
| 570 | if(strlen(conf->sysname) > 31){ |
| 571 | kfree(ppp_priv_area); |
| 572 | return -EINVAL; |
| 573 | } |
| 574 | |
| 575 | /* If no system name is specified */ |
| 576 | if(!strlen(conf->sysname) && (card->u.p.authenticator)){ |
| 577 | kfree(ppp_priv_area); |
| 578 | return -EINVAL; |
| 579 | } |
| 580 | |
| 581 | /* copy the data into the ppp private structure */ |
| 582 | memcpy(ppp_priv_area->userid, conf->userid, strlen(conf->userid)); |
| 583 | memcpy(ppp_priv_area->passwd, conf->passwd, strlen(conf->passwd)); |
| 584 | memcpy(ppp_priv_area->sysname, conf->sysname, strlen(conf->sysname)); |
| 585 | |
| 586 | |
| 587 | ppp_priv_area->enable_IPX = conf->enable_IPX; |
| 588 | if (conf->network_number){ |
| 589 | ppp_priv_area->network_number = conf->network_number; |
| 590 | }else{ |
| 591 | ppp_priv_area->network_number = 0xDEADBEEF; |
| 592 | } |
| 593 | |
| 594 | /* Tells us that if this interface is a |
| 595 | * gateway or not */ |
| 596 | if ((ppp_priv_area->gateway = conf->gateway) == WANOPT_YES){ |
| 597 | printk(KERN_INFO "%s: Interface %s is set as a gateway.\n", |
| 598 | card->devname,card->u.p.if_name); |
| 599 | } |
| 600 | |
| 601 | /* prepare network device data space for registration */ |
| 602 | strcpy(dev->name,card->u.p.if_name); |
| 603 | |
| 604 | dev->init = &if_init; |
| 605 | dev->priv = ppp_priv_area; |
| 606 | dev->mtu = min_t(unsigned int, dev->mtu, card->wandev.mtu); |
| 607 | |
| 608 | /* Initialize the polling work routine */ |
| 609 | INIT_WORK(&ppp_priv_area->poll_work, (void*)(void*)ppp_poll, dev); |
| 610 | |
| 611 | /* Initialize the polling delay timer */ |
| 612 | init_timer(&ppp_priv_area->poll_delay_timer); |
| 613 | ppp_priv_area->poll_delay_timer.data = (unsigned long)dev; |
| 614 | ppp_priv_area->poll_delay_timer.function = ppp_poll_delay; |
| 615 | |
| 616 | |
| 617 | /* Since we start with dummy IP addresses we can say |
| 618 | * that route exists */ |
| 619 | printk(KERN_INFO "\n"); |
| 620 | |
| 621 | return 0; |
| 622 | } |
| 623 | |
| 624 | /*============================================================================ |
| 625 | * Delete logical channel. |
| 626 | */ |
| 627 | static int del_if(struct wan_device *wandev, struct net_device *dev) |
| 628 | { |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | static void disable_comm (sdla_t *card) |
| 633 | { |
| 634 | ppp_comm_disable_shutdown(card); |
| 635 | return; |
| 636 | } |
| 637 | |
| 638 | /****** WANPIPE-specific entry points ***************************************/ |
| 639 | |
| 640 | /*============================================================================ |
| 641 | * Execute adapter interface command. |
| 642 | */ |
| 643 | |
| 644 | //FIXME: Why do we need this ???? |
| 645 | static int wpp_exec(struct sdla *card, void *u_cmd, void *u_data) |
| 646 | { |
| 647 | ppp_mbox_t *mbox = card->mbox; |
| 648 | int len; |
| 649 | |
| 650 | if (copy_from_user((void*)&mbox->cmd, u_cmd, sizeof(ppp_cmd_t))) |
| 651 | return -EFAULT; |
| 652 | |
| 653 | len = mbox->cmd.length; |
| 654 | |
| 655 | if (len) { |
| 656 | |
| 657 | if( copy_from_user((void*)&mbox->data, u_data, len)) |
| 658 | return -EFAULT; |
| 659 | |
| 660 | } |
| 661 | |
| 662 | /* execute command */ |
| 663 | if (!sdla_exec(mbox)) |
| 664 | return -EIO; |
| 665 | |
| 666 | /* return result */ |
| 667 | if( copy_to_user(u_cmd, (void*)&mbox->cmd, sizeof(ppp_cmd_t))) |
| 668 | return -EFAULT; |
| 669 | len = mbox->cmd.length; |
| 670 | |
| 671 | if (len && u_data && copy_to_user(u_data, (void*)&mbox->data, len)) |
| 672 | return -EFAULT; |
| 673 | |
| 674 | return 0; |
| 675 | } |
| 676 | |
| 677 | /****** Network Device Interface ********************************************/ |
| 678 | |
| 679 | /*============================================================================ |
| 680 | * Initialize Linux network interface. |
| 681 | * |
| 682 | * This routine is called only once for each interface, during Linux network |
| 683 | * interface registration. Returning anything but zero will fail interface |
| 684 | * registration. |
| 685 | */ |
| 686 | static int if_init(struct net_device *dev) |
| 687 | { |
| 688 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 689 | sdla_t *card = ppp_priv_area->card; |
| 690 | struct wan_device *wandev = &card->wandev; |
| 691 | |
| 692 | /* Initialize device driver entry points */ |
| 693 | dev->open = &if_open; |
| 694 | dev->stop = &if_close; |
| 695 | dev->hard_header = &if_header; |
| 696 | dev->rebuild_header = &if_rebuild_hdr; |
| 697 | dev->hard_start_xmit = &if_send; |
| 698 | dev->get_stats = &if_stats; |
| 699 | dev->tx_timeout = &if_tx_timeout; |
| 700 | dev->watchdog_timeo = TX_TIMEOUT; |
| 701 | |
| 702 | /* Initialize media-specific parameters */ |
| 703 | dev->type = ARPHRD_PPP; /* ARP h/w type */ |
| 704 | dev->flags |= IFF_POINTOPOINT; |
| 705 | dev->flags |= IFF_NOARP; |
| 706 | |
| 707 | /* Enable Mulitcasting if specified by user*/ |
| 708 | if (ppp_priv_area->mc == WANOPT_YES){ |
| 709 | dev->flags |= IFF_MULTICAST; |
| 710 | } |
| 711 | |
| 712 | dev->mtu = wandev->mtu; |
| 713 | dev->hard_header_len = PPP_HDR_LEN; /* media header length */ |
| 714 | |
| 715 | /* Initialize hardware parameters (just for reference) */ |
| 716 | dev->irq = wandev->irq; |
| 717 | dev->dma = wandev->dma; |
| 718 | dev->base_addr = wandev->ioport; |
| 719 | dev->mem_start = wandev->maddr; |
| 720 | dev->mem_end = wandev->maddr + wandev->msize - 1; |
| 721 | |
| 722 | /* Set transmit buffer queue length */ |
| 723 | dev->tx_queue_len = 100; |
| 724 | SET_MODULE_OWNER(dev); |
| 725 | |
| 726 | return 0; |
| 727 | } |
| 728 | |
| 729 | /*============================================================================ |
| 730 | * Open network interface. |
| 731 | * o enable communications and interrupts. |
| 732 | * o prevent module from unloading by incrementing use count |
| 733 | * |
| 734 | * Return 0 if O.k. or errno. |
| 735 | */ |
| 736 | static int if_open(struct net_device *dev) |
| 737 | { |
| 738 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 739 | sdla_t *card = ppp_priv_area->card; |
| 740 | struct timeval tv; |
| 741 | //unsigned long smp_flags; |
| 742 | |
| 743 | if (netif_running(dev)) |
| 744 | return -EBUSY; |
| 745 | |
| 746 | wanpipe_open(card); |
| 747 | |
| 748 | netif_start_queue(dev); |
| 749 | |
| 750 | do_gettimeofday( &tv ); |
| 751 | ppp_priv_area->router_start_time = tv.tv_sec; |
| 752 | |
| 753 | /* We cannot configure the card here because we don't |
| 754 | * have access to the interface IP addresses. |
| 755 | * Once the interface initilization is complete, we will be |
| 756 | * able to access the IP addresses. Therefore, |
| 757 | * configure the ppp link in the poll routine */ |
| 758 | set_bit(0,&ppp_priv_area->config_ppp); |
| 759 | ppp_priv_area->config_wait_timeout=jiffies; |
| 760 | |
| 761 | /* Start the PPP configuration after 1sec delay. |
| 762 | * This will give the interface initilization time |
| 763 | * to finish its configuration */ |
| 764 | mod_timer(&ppp_priv_area->poll_delay_timer, jiffies + HZ); |
| 765 | return 0; |
| 766 | } |
| 767 | |
| 768 | /*============================================================================ |
| 769 | * Close network interface. |
| 770 | * o if this is the last open, then disable communications and interrupts. |
| 771 | * o reset flags. |
| 772 | */ |
| 773 | static int if_close(struct net_device *dev) |
| 774 | { |
| 775 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 776 | sdla_t *card = ppp_priv_area->card; |
| 777 | |
| 778 | netif_stop_queue(dev); |
| 779 | wanpipe_close(card); |
| 780 | |
| 781 | del_timer (&ppp_priv_area->poll_delay_timer); |
| 782 | return 0; |
| 783 | } |
| 784 | |
| 785 | /*============================================================================ |
| 786 | * Build media header. |
| 787 | * |
| 788 | * The trick here is to put packet type (Ethertype) into 'protocol' field of |
| 789 | * the socket buffer, so that we don't forget it. If packet type is not |
| 790 | * supported, set skb->protocol to 0 and discard packet later. |
| 791 | * |
| 792 | * Return: media header length. |
| 793 | */ |
| 794 | static int if_header(struct sk_buff *skb, struct net_device *dev, |
| 795 | unsigned short type, void *daddr, void *saddr, unsigned len) |
| 796 | { |
| 797 | switch (type) |
| 798 | { |
| 799 | case ETH_P_IP: |
| 800 | case ETH_P_IPX: |
| 801 | skb->protocol = htons(type); |
| 802 | break; |
| 803 | |
| 804 | default: |
| 805 | skb->protocol = 0; |
| 806 | } |
| 807 | |
| 808 | return PPP_HDR_LEN; |
| 809 | } |
| 810 | |
| 811 | /*============================================================================ |
| 812 | * Re-build media header. |
| 813 | * |
| 814 | * Return: 1 physical address resolved. |
| 815 | * 0 physical address not resolved |
| 816 | */ |
| 817 | static int if_rebuild_hdr (struct sk_buff *skb) |
| 818 | { |
| 819 | struct net_device *dev = skb->dev; |
| 820 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 821 | sdla_t *card = ppp_priv_area->card; |
| 822 | |
| 823 | printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n", |
| 824 | card->devname, dev->name); |
| 825 | return 1; |
| 826 | } |
| 827 | |
| 828 | /*============================================================================ |
| 829 | * Handle transmit timeout event from netif watchdog |
| 830 | */ |
| 831 | static void if_tx_timeout(struct net_device *dev) |
| 832 | { |
| 833 | ppp_private_area_t* chan = dev->priv; |
| 834 | sdla_t *card = chan->card; |
| 835 | |
| 836 | /* If our device stays busy for at least 5 seconds then we will |
| 837 | * kick start the device by making dev->tbusy = 0. We expect |
| 838 | * that our device never stays busy more than 5 seconds. So this |
| 839 | * is only used as a last resort. |
| 840 | */ |
| 841 | |
| 842 | ++ chan->if_send_stat.if_send_tbusy; |
| 843 | ++card->wandev.stats.collisions; |
| 844 | |
| 845 | printk (KERN_INFO "%s: Transmit timed out on %s\n", card->devname,dev->name); |
| 846 | ++chan->if_send_stat.if_send_tbusy_timeout; |
| 847 | netif_wake_queue (dev); |
| 848 | } |
| 849 | |
| 850 | |
| 851 | |
| 852 | /*============================================================================ |
| 853 | * Send a packet on a network interface. |
| 854 | * o set tbusy flag (marks start of the transmission) to block a timer-based |
| 855 | * transmit from overlapping. |
| 856 | * o check link state. If link is not up, then drop the packet. |
| 857 | * o execute adapter send command. |
| 858 | * o free socket buffer |
| 859 | * |
| 860 | * Return: 0 complete (socket buffer must be freed) |
| 861 | * non-0 packet may be re-transmitted (tbusy must be set) |
| 862 | * |
| 863 | * Notes: |
| 864 | * 1. This routine is called either by the protocol stack or by the "net |
| 865 | * bottom half" (with interrupts enabled). |
| 866 | * 2. Setting tbusy flag will inhibit further transmit requests from the |
| 867 | * protocol stack and can be used for flow control with protocol layer. |
| 868 | */ |
| 869 | static int if_send (struct sk_buff *skb, struct net_device *dev) |
| 870 | { |
| 871 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 872 | sdla_t *card = ppp_priv_area->card; |
| 873 | unsigned char *sendpacket; |
| 874 | unsigned long smp_flags; |
| 875 | ppp_flags_t *flags = card->flags; |
| 876 | int udp_type; |
| 877 | int err=0; |
| 878 | |
| 879 | ++ppp_priv_area->if_send_stat.if_send_entry; |
| 880 | |
| 881 | netif_stop_queue(dev); |
| 882 | |
| 883 | if (skb == NULL) { |
| 884 | |
| 885 | /* If we get here, some higher layer thinks we've missed an |
| 886 | * tx-done interrupt. |
| 887 | */ |
| 888 | printk(KERN_INFO "%s: interface %s got kicked!\n", |
| 889 | card->devname, dev->name); |
| 890 | |
| 891 | ++ppp_priv_area->if_send_stat.if_send_skb_null; |
| 892 | |
| 893 | netif_wake_queue(dev); |
| 894 | return 0; |
| 895 | } |
| 896 | |
| 897 | sendpacket = skb->data; |
| 898 | |
| 899 | udp_type = udp_pkt_type( skb, card ); |
| 900 | |
| 901 | |
| 902 | if (udp_type == UDP_PTPIPE_TYPE){ |
| 903 | if(store_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb, dev, |
| 904 | ppp_priv_area)){ |
| 905 | flags->imask |= PPP_INTR_TIMER; |
| 906 | } |
| 907 | ++ppp_priv_area->if_send_stat.if_send_PIPE_request; |
| 908 | netif_start_queue(dev); |
| 909 | return 0; |
| 910 | } |
| 911 | |
| 912 | /* Check for broadcast and multicast addresses |
| 913 | * If found, drop (deallocate) a packet and return. |
| 914 | */ |
| 915 | if(chk_bcast_mcast_addr(card, dev, skb)){ |
| 916 | ++card->wandev.stats.tx_dropped; |
| 917 | dev_kfree_skb_any(skb); |
| 918 | netif_start_queue(dev); |
| 919 | return 0; |
| 920 | } |
| 921 | |
| 922 | |
| 923 | if(card->hw.type != SDLA_S514){ |
| 924 | s508_lock(card,&smp_flags); |
| 925 | } |
| 926 | |
| 927 | if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) { |
| 928 | |
| 929 | printk(KERN_INFO "%s: Critical in if_send: %lx\n", |
| 930 | card->wandev.name,card->wandev.critical); |
| 931 | |
| 932 | ++card->wandev.stats.tx_dropped; |
| 933 | ++ppp_priv_area->if_send_stat.if_send_critical_non_ISR; |
| 934 | netif_start_queue(dev); |
| 935 | goto if_send_exit_crit; |
| 936 | } |
| 937 | |
| 938 | if (card->wandev.state != WAN_CONNECTED) { |
| 939 | |
| 940 | ++ppp_priv_area->if_send_stat.if_send_wan_disconnected; |
| 941 | ++card->wandev.stats.tx_dropped; |
| 942 | netif_start_queue(dev); |
| 943 | |
| 944 | } else if (!skb->protocol) { |
| 945 | ++ppp_priv_area->if_send_stat.if_send_protocol_error; |
| 946 | ++card->wandev.stats.tx_errors; |
| 947 | netif_start_queue(dev); |
| 948 | |
| 949 | } else { |
| 950 | |
| 951 | /*If it's IPX change the network numbers to 0 if they're ours.*/ |
| 952 | if( skb->protocol == htons(ETH_P_IPX) ) { |
| 953 | if(ppp_priv_area->enable_IPX) { |
| 954 | switch_net_numbers( skb->data, |
| 955 | ppp_priv_area->network_number, 0); |
| 956 | } else { |
| 957 | ++card->wandev.stats.tx_dropped; |
| 958 | netif_start_queue(dev); |
| 959 | goto if_send_exit_crit; |
| 960 | } |
| 961 | } |
| 962 | |
| 963 | if (ppp_send(card, skb->data, skb->len, skb->protocol)) { |
| 964 | netif_stop_queue(dev); |
| 965 | ++ppp_priv_area->if_send_stat.if_send_adptr_bfrs_full; |
| 966 | ++ppp_priv_area->if_send_stat.if_send_tx_int_enabled; |
| 967 | } else { |
| 968 | ++ppp_priv_area->if_send_stat.if_send_bfr_passed_to_adptr; |
| 969 | ++card->wandev.stats.tx_packets; |
| 970 | card->wandev.stats.tx_bytes += skb->len; |
| 971 | netif_start_queue(dev); |
| 972 | dev->trans_start = jiffies; |
| 973 | } |
| 974 | } |
| 975 | |
| 976 | if_send_exit_crit: |
| 977 | |
| 978 | if (!(err=netif_queue_stopped(dev))){ |
| 979 | dev_kfree_skb_any(skb); |
| 980 | }else{ |
| 981 | ppp_priv_area->tick_counter = jiffies; |
| 982 | flags->imask |= PPP_INTR_TXRDY; /* unmask Tx interrupts */ |
| 983 | } |
| 984 | |
| 985 | clear_bit(SEND_CRIT,&card->wandev.critical); |
| 986 | if(card->hw.type != SDLA_S514){ |
| 987 | s508_unlock(card,&smp_flags); |
| 988 | } |
| 989 | |
| 990 | return err; |
| 991 | } |
| 992 | |
| 993 | |
| 994 | /*============================================================================= |
| 995 | * Store a UDP management packet for later processing. |
| 996 | */ |
| 997 | |
| 998 | static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card, |
| 999 | struct sk_buff *skb, struct net_device* dev, |
| 1000 | ppp_private_area_t* ppp_priv_area ) |
| 1001 | { |
| 1002 | int udp_pkt_stored = 0; |
| 1003 | |
| 1004 | if(!ppp_priv_area->udp_pkt_lgth && (skb->len<=MAX_LGTH_UDP_MGNT_PKT)){ |
| 1005 | ppp_priv_area->udp_pkt_lgth = skb->len; |
| 1006 | ppp_priv_area->udp_pkt_src = udp_pkt_src; |
| 1007 | memcpy(ppp_priv_area->udp_pkt_data, skb->data, skb->len); |
| 1008 | ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_UDP; |
| 1009 | ppp_priv_area->protocol = skb->protocol; |
| 1010 | udp_pkt_stored = 1; |
| 1011 | }else{ |
| 1012 | if (skb->len > MAX_LGTH_UDP_MGNT_PKT){ |
| 1013 | printk(KERN_INFO "%s: PIPEMON UDP request too long : %i\n", |
| 1014 | card->devname, skb->len); |
| 1015 | }else{ |
| 1016 | printk(KERN_INFO "%s: PIPEMON UPD request already pending\n", |
| 1017 | card->devname); |
| 1018 | } |
| 1019 | ppp_priv_area->udp_pkt_lgth = 0; |
| 1020 | } |
| 1021 | |
| 1022 | if(udp_pkt_src == UDP_PKT_FRM_STACK){ |
| 1023 | dev_kfree_skb_any(skb); |
| 1024 | }else{ |
| 1025 | dev_kfree_skb_any(skb); |
| 1026 | } |
| 1027 | |
| 1028 | return(udp_pkt_stored); |
| 1029 | } |
| 1030 | |
| 1031 | |
| 1032 | |
| 1033 | /*============================================================================ |
| 1034 | * Reply to UDP Management system. |
| 1035 | * Return length of reply. |
| 1036 | */ |
| 1037 | static int reply_udp( unsigned char *data, unsigned int mbox_len ) |
| 1038 | { |
| 1039 | unsigned short len, udp_length, temp, ip_length; |
| 1040 | unsigned long ip_temp; |
| 1041 | int even_bound = 0; |
| 1042 | ppp_udp_pkt_t *p_udp_pkt = (ppp_udp_pkt_t *)data; |
| 1043 | |
| 1044 | /* Set length of packet */ |
| 1045 | len = sizeof(ip_pkt_t)+ |
| 1046 | sizeof(udp_pkt_t)+ |
| 1047 | sizeof(wp_mgmt_t)+ |
| 1048 | sizeof(cblock_t)+ |
| 1049 | mbox_len; |
| 1050 | |
| 1051 | /* fill in UDP reply */ |
| 1052 | p_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY; |
| 1053 | |
| 1054 | /* fill in UDP length */ |
| 1055 | udp_length = sizeof(udp_pkt_t)+ |
| 1056 | sizeof(wp_mgmt_t)+ |
| 1057 | sizeof(cblock_t)+ |
| 1058 | mbox_len; |
| 1059 | |
| 1060 | |
| 1061 | /* put it on an even boundary */ |
| 1062 | if ( udp_length & 0x0001 ) { |
| 1063 | udp_length += 1; |
| 1064 | len += 1; |
| 1065 | even_bound=1; |
| 1066 | } |
| 1067 | |
| 1068 | temp = (udp_length<<8)|(udp_length>>8); |
| 1069 | p_udp_pkt->udp_pkt.udp_length = temp; |
| 1070 | |
| 1071 | |
| 1072 | /* swap UDP ports */ |
| 1073 | temp = p_udp_pkt->udp_pkt.udp_src_port; |
| 1074 | p_udp_pkt->udp_pkt.udp_src_port = |
| 1075 | p_udp_pkt->udp_pkt.udp_dst_port; |
| 1076 | p_udp_pkt->udp_pkt.udp_dst_port = temp; |
| 1077 | |
| 1078 | |
| 1079 | /* add UDP pseudo header */ |
| 1080 | temp = 0x1100; |
| 1081 | *((unsigned short *)(p_udp_pkt->data+mbox_len+even_bound)) = temp; |
| 1082 | temp = (udp_length<<8)|(udp_length>>8); |
| 1083 | *((unsigned short *)(p_udp_pkt->data+mbox_len+even_bound+2)) = temp; |
| 1084 | |
| 1085 | /* calculate UDP checksum */ |
| 1086 | p_udp_pkt->udp_pkt.udp_checksum = 0; |
| 1087 | p_udp_pkt->udp_pkt.udp_checksum = |
| 1088 | calc_checksum(&data[UDP_OFFSET],udp_length+UDP_OFFSET); |
| 1089 | |
| 1090 | /* fill in IP length */ |
| 1091 | ip_length = udp_length + sizeof(ip_pkt_t); |
| 1092 | temp = (ip_length<<8)|(ip_length>>8); |
| 1093 | p_udp_pkt->ip_pkt.total_length = temp; |
| 1094 | |
| 1095 | /* swap IP addresses */ |
| 1096 | ip_temp = p_udp_pkt->ip_pkt.ip_src_address; |
| 1097 | p_udp_pkt->ip_pkt.ip_src_address = p_udp_pkt->ip_pkt.ip_dst_address; |
| 1098 | p_udp_pkt->ip_pkt.ip_dst_address = ip_temp; |
| 1099 | |
| 1100 | /* fill in IP checksum */ |
| 1101 | p_udp_pkt->ip_pkt.hdr_checksum = 0; |
| 1102 | p_udp_pkt->ip_pkt.hdr_checksum = calc_checksum(data,sizeof(ip_pkt_t)); |
| 1103 | |
| 1104 | return len; |
| 1105 | |
| 1106 | } /* reply_udp */ |
| 1107 | |
| 1108 | unsigned short calc_checksum (char *data, int len) |
| 1109 | { |
| 1110 | unsigned short temp; |
| 1111 | unsigned long sum=0; |
| 1112 | int i; |
| 1113 | |
| 1114 | for( i = 0; i <len; i+=2 ) { |
| 1115 | memcpy(&temp,&data[i],2); |
| 1116 | sum += (unsigned long)temp; |
| 1117 | } |
| 1118 | |
| 1119 | while (sum >> 16 ) { |
| 1120 | sum = (sum & 0xffffUL) + (sum >> 16); |
| 1121 | } |
| 1122 | |
| 1123 | temp = (unsigned short)sum; |
| 1124 | temp = ~temp; |
| 1125 | |
| 1126 | if( temp == 0 ) |
| 1127 | temp = 0xffff; |
| 1128 | |
| 1129 | return temp; |
| 1130 | } |
| 1131 | |
| 1132 | /* |
| 1133 | If incoming is 0 (outgoing)- if the net numbers is ours make it 0 |
| 1134 | if incoming is 1 - if the net number is 0 make it ours |
| 1135 | |
| 1136 | */ |
| 1137 | static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, unsigned char incoming) |
| 1138 | { |
| 1139 | unsigned long pnetwork_number; |
| 1140 | |
| 1141 | pnetwork_number = (unsigned long)((sendpacket[6] << 24) + |
| 1142 | (sendpacket[7] << 16) + (sendpacket[8] << 8) + |
| 1143 | sendpacket[9]); |
| 1144 | |
| 1145 | if (!incoming) { |
| 1146 | //If the destination network number is ours, make it 0 |
| 1147 | if( pnetwork_number == network_number) { |
| 1148 | sendpacket[6] = sendpacket[7] = sendpacket[8] = |
| 1149 | sendpacket[9] = 0x00; |
| 1150 | } |
| 1151 | } else { |
| 1152 | //If the incoming network is 0, make it ours |
| 1153 | if( pnetwork_number == 0) { |
| 1154 | sendpacket[6] = (unsigned char)(network_number >> 24); |
| 1155 | sendpacket[7] = (unsigned char)((network_number & |
| 1156 | 0x00FF0000) >> 16); |
| 1157 | sendpacket[8] = (unsigned char)((network_number & |
| 1158 | 0x0000FF00) >> 8); |
| 1159 | sendpacket[9] = (unsigned char)(network_number & |
| 1160 | 0x000000FF); |
| 1161 | } |
| 1162 | } |
| 1163 | |
| 1164 | |
| 1165 | pnetwork_number = (unsigned long)((sendpacket[18] << 24) + |
| 1166 | (sendpacket[19] << 16) + (sendpacket[20] << 8) + |
| 1167 | sendpacket[21]); |
| 1168 | |
| 1169 | if( !incoming ) { |
| 1170 | //If the source network is ours, make it 0 |
| 1171 | if( pnetwork_number == network_number) { |
| 1172 | sendpacket[18] = sendpacket[19] = sendpacket[20] = |
| 1173 | sendpacket[21] = 0x00; |
| 1174 | } |
| 1175 | } else { |
| 1176 | //If the source network is 0, make it ours |
| 1177 | if( pnetwork_number == 0 ) { |
| 1178 | sendpacket[18] = (unsigned char)(network_number >> 24); |
| 1179 | sendpacket[19] = (unsigned char)((network_number & |
| 1180 | 0x00FF0000) >> 16); |
| 1181 | sendpacket[20] = (unsigned char)((network_number & |
| 1182 | 0x0000FF00) >> 8); |
| 1183 | sendpacket[21] = (unsigned char)(network_number & |
| 1184 | 0x000000FF); |
| 1185 | } |
| 1186 | } |
| 1187 | } /* switch_net_numbers */ |
| 1188 | |
| 1189 | /*============================================================================ |
| 1190 | * Get ethernet-style interface statistics. |
| 1191 | * Return a pointer to struct net_device_stats. |
| 1192 | */ |
| 1193 | static struct net_device_stats *if_stats(struct net_device *dev) |
| 1194 | { |
| 1195 | |
| 1196 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 1197 | sdla_t* card; |
| 1198 | |
| 1199 | if( ppp_priv_area == NULL ) |
| 1200 | return NULL; |
| 1201 | |
| 1202 | card = ppp_priv_area->card; |
| 1203 | return &card->wandev.stats; |
| 1204 | } |
| 1205 | |
| 1206 | /****** PPP Firmware Interface Functions ************************************/ |
| 1207 | |
| 1208 | /*============================================================================ |
| 1209 | * Read firmware code version. |
| 1210 | * Put code version as ASCII string in str. |
| 1211 | */ |
| 1212 | static int ppp_read_version(sdla_t *card, char *str) |
| 1213 | { |
| 1214 | ppp_mbox_t *mb = card->mbox; |
| 1215 | int err; |
| 1216 | |
| 1217 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1218 | mb->cmd.command = PPP_READ_CODE_VERSION; |
| 1219 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1220 | |
| 1221 | if (err != CMD_OK) |
| 1222 | |
| 1223 | ppp_error(card, err, mb); |
| 1224 | |
| 1225 | else if (str) { |
| 1226 | |
| 1227 | int len = mb->cmd.length; |
| 1228 | |
| 1229 | memcpy(str, mb->data, len); |
| 1230 | str[len] = '\0'; |
| 1231 | |
| 1232 | } |
| 1233 | |
| 1234 | return err; |
| 1235 | } |
| 1236 | /*=========================================================================== |
| 1237 | * Set Out-Bound Authentication. |
| 1238 | */ |
| 1239 | static int ppp_set_outbnd_auth (sdla_t *card, ppp_private_area_t *ppp_priv_area) |
| 1240 | { |
| 1241 | ppp_mbox_t *mb = card->mbox; |
| 1242 | int err; |
| 1243 | |
| 1244 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1245 | memset(&mb->data, 0, (strlen(ppp_priv_area->userid) + |
| 1246 | strlen(ppp_priv_area->passwd) + 2 ) ); |
| 1247 | memcpy(mb->data, ppp_priv_area->userid, strlen(ppp_priv_area->userid)); |
| 1248 | memcpy((mb->data + strlen(ppp_priv_area->userid) + 1), |
| 1249 | ppp_priv_area->passwd, strlen(ppp_priv_area->passwd)); |
| 1250 | |
| 1251 | mb->cmd.length = strlen(ppp_priv_area->userid) + |
| 1252 | strlen(ppp_priv_area->passwd) + 2 ; |
| 1253 | |
| 1254 | mb->cmd.command = PPP_SET_OUTBOUND_AUTH; |
| 1255 | |
| 1256 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1257 | |
| 1258 | if (err != CMD_OK) |
| 1259 | ppp_error(card, err, mb); |
| 1260 | |
| 1261 | return err; |
| 1262 | } |
| 1263 | |
| 1264 | /*=========================================================================== |
| 1265 | * Set In-Bound Authentication. |
| 1266 | */ |
| 1267 | static int ppp_set_inbnd_auth (sdla_t *card, ppp_private_area_t *ppp_priv_area) |
| 1268 | { |
| 1269 | ppp_mbox_t *mb = card->mbox; |
| 1270 | int err, i; |
| 1271 | char* user_tokens[32]; |
| 1272 | char* pass_tokens[32]; |
| 1273 | int userids, passwds; |
| 1274 | int add_ptr; |
| 1275 | |
| 1276 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1277 | memset(&mb->data, 0, 1008); |
| 1278 | memcpy(mb->data, ppp_priv_area->sysname, |
| 1279 | strlen(ppp_priv_area->sysname)); |
| 1280 | |
| 1281 | /* Parse the userid string and the password string and build a string |
| 1282 | to copy it to the data area of the command structure. The string |
| 1283 | will look like "SYS_NAME<NULL>USER1<NULL>PASS1<NULL>USER2<NULL>PASS2 |
| 1284 | ....<NULL> " |
| 1285 | */ |
| 1286 | userids = tokenize( ppp_priv_area->userid, user_tokens); |
| 1287 | passwds = tokenize( ppp_priv_area->passwd, pass_tokens); |
| 1288 | |
| 1289 | if (userids != passwds){ |
| 1290 | printk(KERN_INFO "%s: Number of passwords does not equal the number of user ids\n", card->devname); |
| 1291 | return 1; |
| 1292 | } |
| 1293 | |
| 1294 | add_ptr = strlen(ppp_priv_area->sysname) + 1; |
| 1295 | for (i=0; i<userids; i++){ |
| 1296 | memcpy((mb->data + add_ptr), user_tokens[i], |
| 1297 | strlen(user_tokens[i])); |
| 1298 | memcpy((mb->data + add_ptr + strlen(user_tokens[i]) + 1), |
| 1299 | pass_tokens[i], strlen(pass_tokens[i])); |
| 1300 | add_ptr = add_ptr + strlen(user_tokens[i]) + 1 + |
| 1301 | strlen(pass_tokens[i]) + 1; |
| 1302 | } |
| 1303 | |
| 1304 | mb->cmd.length = add_ptr + 1; |
| 1305 | mb->cmd.command = PPP_SET_INBOUND_AUTH; |
| 1306 | |
| 1307 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1308 | |
| 1309 | if (err != CMD_OK) |
| 1310 | ppp_error(card, err, mb); |
| 1311 | |
| 1312 | return err; |
| 1313 | } |
| 1314 | |
| 1315 | |
| 1316 | /*============================================================================ |
| 1317 | * Tokenize string. |
| 1318 | * Parse a string of the following syntax: |
| 1319 | * <arg1>,<arg2>,... |
| 1320 | * and fill array of tokens with pointers to string elements. |
| 1321 | * |
| 1322 | */ |
| 1323 | static int tokenize (char *str, char **tokens) |
| 1324 | { |
| 1325 | int cnt = 0; |
| 1326 | |
| 1327 | tokens[0] = strsep(&str, "/"); |
| 1328 | while (tokens[cnt] && (cnt < 32 - 1)) |
| 1329 | { |
| 1330 | tokens[cnt] = strstrip(tokens[cnt], " \t"); |
| 1331 | tokens[++cnt] = strsep(&str, "/"); |
| 1332 | } |
| 1333 | return cnt; |
| 1334 | } |
| 1335 | |
| 1336 | /*============================================================================ |
| 1337 | * Strip leading and trailing spaces off the string str. |
| 1338 | */ |
| 1339 | static char* strstrip (char *str, char* s) |
| 1340 | { |
| 1341 | char *eos = str + strlen(str); /* -> end of string */ |
| 1342 | |
| 1343 | while (*str && strchr(s, *str)) |
| 1344 | ++str /* strip leading spaces */ |
| 1345 | ; |
| 1346 | while ((eos > str) && strchr(s, *(eos - 1))) |
| 1347 | --eos /* strip trailing spaces */ |
| 1348 | ; |
| 1349 | *eos = '\0'; |
| 1350 | return str; |
| 1351 | } |
| 1352 | /*============================================================================ |
| 1353 | * Configure PPP firmware. |
| 1354 | */ |
| 1355 | static int ppp_configure(sdla_t *card, void *data) |
| 1356 | { |
| 1357 | ppp_mbox_t *mb = card->mbox; |
| 1358 | int data_len = sizeof(ppp508_conf_t); |
| 1359 | int err; |
| 1360 | |
| 1361 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1362 | memcpy(mb->data, data, data_len); |
| 1363 | mb->cmd.length = data_len; |
| 1364 | mb->cmd.command = PPP_SET_CONFIG; |
| 1365 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1366 | |
| 1367 | if (err != CMD_OK) |
| 1368 | ppp_error(card, err, mb); |
| 1369 | |
| 1370 | return err; |
| 1371 | } |
| 1372 | |
| 1373 | /*============================================================================ |
| 1374 | * Set interrupt mode. |
| 1375 | */ |
| 1376 | static int ppp_set_intr_mode(sdla_t *card, unsigned char mode) |
| 1377 | { |
| 1378 | ppp_mbox_t *mb = card->mbox; |
| 1379 | ppp_intr_info_t *ppp_intr_data = (ppp_intr_info_t *) &mb->data[0]; |
| 1380 | int err; |
| 1381 | |
| 1382 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1383 | ppp_intr_data->i_enable = mode; |
| 1384 | |
| 1385 | ppp_intr_data->irq = card->hw.irq; |
| 1386 | mb->cmd.length = 2; |
| 1387 | |
| 1388 | /* If timer has been enabled, set the timer delay to 1sec */ |
| 1389 | if (mode & 0x80){ |
| 1390 | ppp_intr_data->timer_len = 250; //5;//100; //250; |
| 1391 | mb->cmd.length = 4; |
| 1392 | } |
| 1393 | |
| 1394 | mb->cmd.command = PPP_SET_INTR_FLAGS; |
| 1395 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1396 | |
| 1397 | if (err != CMD_OK) |
| 1398 | ppp_error(card, err, mb); |
| 1399 | |
| 1400 | |
| 1401 | return err; |
| 1402 | } |
| 1403 | |
| 1404 | /*============================================================================ |
| 1405 | * Enable communications. |
| 1406 | */ |
| 1407 | static int ppp_comm_enable(sdla_t *card) |
| 1408 | { |
| 1409 | ppp_mbox_t *mb = card->mbox; |
| 1410 | int err; |
| 1411 | |
| 1412 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1413 | mb->cmd.command = PPP_COMM_ENABLE; |
| 1414 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1415 | |
| 1416 | if (err != CMD_OK) |
| 1417 | ppp_error(card, err, mb); |
| 1418 | else |
| 1419 | card->u.p.comm_enabled = 1; |
| 1420 | |
| 1421 | return err; |
| 1422 | } |
| 1423 | |
| 1424 | /*============================================================================ |
| 1425 | * Disable communications. |
| 1426 | */ |
| 1427 | static int ppp_comm_disable(sdla_t *card) |
| 1428 | { |
| 1429 | ppp_mbox_t *mb = card->mbox; |
| 1430 | int err; |
| 1431 | |
| 1432 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1433 | mb->cmd.command = PPP_COMM_DISABLE; |
| 1434 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1435 | if (err != CMD_OK) |
| 1436 | ppp_error(card, err, mb); |
| 1437 | else |
| 1438 | card->u.p.comm_enabled = 0; |
| 1439 | |
| 1440 | return err; |
| 1441 | } |
| 1442 | |
| 1443 | static int ppp_comm_disable_shutdown(sdla_t *card) |
| 1444 | { |
| 1445 | ppp_mbox_t *mb = card->mbox; |
| 1446 | ppp_intr_info_t *ppp_intr_data; |
| 1447 | int err; |
| 1448 | |
| 1449 | if (!mb){ |
| 1450 | return 1; |
| 1451 | } |
| 1452 | |
| 1453 | ppp_intr_data = (ppp_intr_info_t *) &mb->data[0]; |
| 1454 | |
| 1455 | /* Disable all interrupts */ |
| 1456 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1457 | ppp_intr_data->i_enable = 0; |
| 1458 | |
| 1459 | ppp_intr_data->irq = card->hw.irq; |
| 1460 | mb->cmd.length = 2; |
| 1461 | |
| 1462 | mb->cmd.command = PPP_SET_INTR_FLAGS; |
| 1463 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1464 | |
| 1465 | /* Disable communicatinons */ |
| 1466 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1467 | mb->cmd.command = PPP_COMM_DISABLE; |
| 1468 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1469 | |
| 1470 | card->u.p.comm_enabled = 0; |
| 1471 | |
| 1472 | return 0; |
| 1473 | } |
| 1474 | |
| 1475 | |
| 1476 | |
| 1477 | /*============================================================================ |
| 1478 | * Get communications error statistics. |
| 1479 | */ |
| 1480 | static int ppp_get_err_stats(sdla_t *card) |
| 1481 | { |
| 1482 | ppp_mbox_t *mb = card->mbox; |
| 1483 | int err; |
| 1484 | |
| 1485 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 1486 | mb->cmd.command = PPP_READ_ERROR_STATS; |
| 1487 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 1488 | |
| 1489 | if (err == CMD_OK) { |
| 1490 | |
| 1491 | ppp_err_stats_t* stats = (void*)mb->data; |
| 1492 | card->wandev.stats.rx_over_errors = stats->rx_overrun; |
| 1493 | card->wandev.stats.rx_crc_errors = stats->rx_bad_crc; |
| 1494 | card->wandev.stats.rx_missed_errors = stats->rx_abort; |
| 1495 | card->wandev.stats.rx_length_errors = stats->rx_lost; |
| 1496 | card->wandev.stats.tx_aborted_errors = stats->tx_abort; |
| 1497 | |
| 1498 | } else |
| 1499 | ppp_error(card, err, mb); |
| 1500 | |
| 1501 | return err; |
| 1502 | } |
| 1503 | |
| 1504 | /*============================================================================ |
| 1505 | * Send packet. |
| 1506 | * Return: 0 - o.k. |
| 1507 | * 1 - no transmit buffers available |
| 1508 | */ |
| 1509 | static int ppp_send (sdla_t *card, void *data, unsigned len, unsigned proto) |
| 1510 | { |
| 1511 | ppp_buf_ctl_t *txbuf = card->u.p.txbuf; |
| 1512 | |
| 1513 | if (txbuf->flag) |
| 1514 | return 1; |
| 1515 | |
| 1516 | sdla_poke(&card->hw, txbuf->buf.ptr, data, len); |
| 1517 | |
| 1518 | txbuf->length = len; /* frame length */ |
| 1519 | |
| 1520 | if (proto == htons(ETH_P_IPX)) |
| 1521 | txbuf->proto = 0x01; /* protocol ID */ |
| 1522 | else |
| 1523 | txbuf->proto = 0x00; /* protocol ID */ |
| 1524 | |
| 1525 | txbuf->flag = 1; /* start transmission */ |
| 1526 | |
| 1527 | /* Update transmit buffer control fields */ |
| 1528 | card->u.p.txbuf = ++txbuf; |
| 1529 | |
| 1530 | if ((void*)txbuf > card->u.p.txbuf_last) |
| 1531 | card->u.p.txbuf = card->u.p.txbuf_base; |
| 1532 | |
| 1533 | return 0; |
| 1534 | } |
| 1535 | |
| 1536 | /****** Firmware Error Handler **********************************************/ |
| 1537 | |
| 1538 | /*============================================================================ |
| 1539 | * Firmware error handler. |
| 1540 | * This routine is called whenever firmware command returns non-zero |
| 1541 | * return code. |
| 1542 | * |
| 1543 | * Return zero if previous command has to be cancelled. |
| 1544 | */ |
| 1545 | static int ppp_error(sdla_t *card, int err, ppp_mbox_t *mb) |
| 1546 | { |
| 1547 | unsigned cmd = mb->cmd.command; |
| 1548 | |
| 1549 | switch (err) { |
| 1550 | |
| 1551 | case CMD_TIMEOUT: |
| 1552 | printk(KERN_ERR "%s: command 0x%02X timed out!\n", |
| 1553 | card->devname, cmd); |
| 1554 | break; |
| 1555 | |
| 1556 | default: |
| 1557 | printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n" |
| 1558 | , card->devname, cmd, err); |
| 1559 | } |
| 1560 | |
| 1561 | return 0; |
| 1562 | } |
| 1563 | |
| 1564 | /****** Interrupt Handlers **************************************************/ |
| 1565 | |
| 1566 | /*============================================================================ |
| 1567 | * PPP interrupt service routine. |
| 1568 | */ |
| 1569 | static void wpp_isr (sdla_t *card) |
| 1570 | { |
| 1571 | ppp_flags_t *flags = card->flags; |
| 1572 | char *ptr = &flags->iflag; |
| 1573 | struct net_device *dev = card->wandev.dev; |
| 1574 | int i; |
| 1575 | |
| 1576 | card->in_isr = 1; |
| 1577 | ++card->statistics.isr_entry; |
| 1578 | |
| 1579 | if (!dev && flags->iflag != PPP_INTR_CMD){ |
| 1580 | card->in_isr = 0; |
| 1581 | flags->iflag = 0; |
| 1582 | return; |
| 1583 | } |
| 1584 | |
| 1585 | if (test_bit(PERI_CRIT, (void*)&card->wandev.critical)) { |
| 1586 | card->in_isr = 0; |
| 1587 | flags->iflag = 0; |
| 1588 | return; |
| 1589 | } |
| 1590 | |
| 1591 | |
| 1592 | if(card->hw.type != SDLA_S514){ |
| 1593 | if (test_bit(SEND_CRIT, (void*)&card->wandev.critical)) { |
| 1594 | ++card->statistics.isr_already_critical; |
| 1595 | printk (KERN_INFO "%s: Critical while in ISR!\n", |
| 1596 | card->devname); |
| 1597 | card->in_isr = 0; |
| 1598 | flags->iflag = 0; |
| 1599 | return; |
| 1600 | } |
| 1601 | } |
| 1602 | |
| 1603 | switch (flags->iflag) { |
| 1604 | |
| 1605 | case PPP_INTR_RXRDY: /* receive interrupt 0x01 (bit 0)*/ |
| 1606 | ++card->statistics.isr_rx; |
| 1607 | rx_intr(card); |
| 1608 | break; |
| 1609 | |
| 1610 | case PPP_INTR_TXRDY: /* transmit interrupt 0x02 (bit 1)*/ |
| 1611 | ++card->statistics.isr_tx; |
| 1612 | flags->imask &= ~PPP_INTR_TXRDY; |
| 1613 | netif_wake_queue(dev); |
| 1614 | break; |
| 1615 | |
| 1616 | case PPP_INTR_CMD: /* interface command completed */ |
| 1617 | ++Intr_test_counter; |
| 1618 | ++card->statistics.isr_intr_test; |
| 1619 | break; |
| 1620 | |
| 1621 | case PPP_INTR_MODEM: /* modem status change (DCD, CTS) 0x04 (bit 2)*/ |
| 1622 | case PPP_INTR_DISC: /* Data link disconnected 0x10 (bit 4)*/ |
| 1623 | case PPP_INTR_OPEN: /* Data link open 0x20 (bit 5)*/ |
| 1624 | case PPP_INTR_DROP_DTR: /* DTR drop timeout expired 0x40 bit 6 */ |
| 1625 | event_intr(card); |
| 1626 | break; |
| 1627 | |
| 1628 | case PPP_INTR_TIMER: |
| 1629 | timer_intr(card); |
| 1630 | break; |
| 1631 | |
| 1632 | default: /* unexpected interrupt */ |
| 1633 | ++card->statistics.isr_spurious; |
| 1634 | printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n", |
| 1635 | card->devname, flags->iflag); |
| 1636 | printk(KERN_INFO "%s: ID Bytes = ",card->devname); |
| 1637 | for(i = 0; i < 8; i ++) |
| 1638 | printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i)); |
| 1639 | printk(KERN_INFO "\n"); |
| 1640 | } |
| 1641 | |
| 1642 | card->in_isr = 0; |
| 1643 | flags->iflag = 0; |
| 1644 | return; |
| 1645 | } |
| 1646 | |
| 1647 | /*============================================================================ |
| 1648 | * Receive interrupt handler. |
| 1649 | */ |
| 1650 | static void rx_intr(sdla_t *card) |
| 1651 | { |
| 1652 | ppp_buf_ctl_t *rxbuf = card->rxmb; |
| 1653 | struct net_device *dev = card->wandev.dev; |
| 1654 | ppp_private_area_t *ppp_priv_area; |
| 1655 | struct sk_buff *skb; |
| 1656 | unsigned len; |
| 1657 | void *buf; |
| 1658 | int i; |
| 1659 | ppp_flags_t *flags = card->flags; |
| 1660 | char *ptr = &flags->iflag; |
| 1661 | int udp_type; |
| 1662 | |
| 1663 | |
| 1664 | if (rxbuf->flag != 0x01) { |
| 1665 | |
| 1666 | printk(KERN_INFO |
| 1667 | "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n", |
| 1668 | card->devname, (unsigned)rxbuf, rxbuf->flag); |
| 1669 | |
| 1670 | printk(KERN_INFO "%s: ID Bytes = ",card->devname); |
| 1671 | |
| 1672 | for(i = 0; i < 8; i ++) |
| 1673 | printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i)); |
| 1674 | printk(KERN_INFO "\n"); |
| 1675 | |
| 1676 | ++card->statistics.rx_intr_corrupt_rx_bfr; |
| 1677 | |
| 1678 | |
| 1679 | /* Bug Fix: Mar 6 2000 |
| 1680 | * If we get a corrupted mailbox, it means that driver |
| 1681 | * is out of sync with the firmware. There is no recovery. |
| 1682 | * If we don't turn off all interrupts for this card |
| 1683 | * the machine will crash. |
| 1684 | */ |
| 1685 | printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname); |
| 1686 | printk(KERN_INFO "Please contact Sangoma Technologies !\n"); |
| 1687 | ppp_set_intr_mode(card,0); |
| 1688 | return; |
| 1689 | } |
| 1690 | |
| 1691 | if (dev && netif_running(dev) && dev->priv){ |
| 1692 | |
| 1693 | len = rxbuf->length; |
| 1694 | ppp_priv_area = dev->priv; |
| 1695 | |
| 1696 | /* Allocate socket buffer */ |
| 1697 | skb = dev_alloc_skb(len); |
| 1698 | |
| 1699 | if (skb != NULL) { |
| 1700 | |
| 1701 | /* Copy data to the socket buffer */ |
| 1702 | unsigned addr = rxbuf->buf.ptr; |
| 1703 | |
| 1704 | if ((addr + len) > card->u.p.rx_top + 1) { |
| 1705 | |
| 1706 | unsigned tmp = card->u.p.rx_top - addr + 1; |
| 1707 | buf = skb_put(skb, tmp); |
| 1708 | sdla_peek(&card->hw, addr, buf, tmp); |
| 1709 | addr = card->u.p.rx_base; |
| 1710 | len -= tmp; |
| 1711 | } |
| 1712 | buf = skb_put(skb, len); |
| 1713 | sdla_peek(&card->hw, addr, buf, len); |
| 1714 | |
| 1715 | /* Decapsulate packet */ |
| 1716 | switch (rxbuf->proto) { |
| 1717 | |
| 1718 | case 0x00: |
| 1719 | skb->protocol = htons(ETH_P_IP); |
| 1720 | break; |
| 1721 | |
| 1722 | case 0x01: |
| 1723 | skb->protocol = htons(ETH_P_IPX); |
| 1724 | break; |
| 1725 | } |
| 1726 | |
| 1727 | udp_type = udp_pkt_type( skb, card ); |
| 1728 | |
| 1729 | if (udp_type == UDP_PTPIPE_TYPE){ |
| 1730 | |
| 1731 | /* Handle a UDP Request in Timer Interrupt */ |
| 1732 | if(store_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK, card, skb, dev, |
| 1733 | ppp_priv_area)){ |
| 1734 | flags->imask |= PPP_INTR_TIMER; |
| 1735 | } |
| 1736 | ++ppp_priv_area->rx_intr_stat.rx_intr_PIPE_request; |
| 1737 | |
| 1738 | |
| 1739 | } else if (handle_IPXWAN(skb->data,card->devname, |
| 1740 | ppp_priv_area->enable_IPX, |
| 1741 | ppp_priv_area->network_number, |
| 1742 | skb->protocol)) { |
| 1743 | |
| 1744 | /* Handle an IPXWAN packet */ |
| 1745 | if( ppp_priv_area->enable_IPX) { |
| 1746 | |
| 1747 | /* Make sure we are not already sending */ |
| 1748 | if (!test_bit(SEND_CRIT, &card->wandev.critical)){ |
| 1749 | ppp_send(card, skb->data, skb->len, htons(ETH_P_IPX)); |
| 1750 | } |
| 1751 | dev_kfree_skb_any(skb); |
| 1752 | |
| 1753 | } else { |
| 1754 | ++card->wandev.stats.rx_dropped; |
| 1755 | } |
| 1756 | } else { |
| 1757 | /* Pass data up the protocol stack */ |
| 1758 | skb->dev = dev; |
| 1759 | skb->mac.raw = skb->data; |
| 1760 | |
| 1761 | ++card->wandev.stats.rx_packets; |
| 1762 | card->wandev.stats.rx_bytes += skb->len; |
| 1763 | ++ppp_priv_area->rx_intr_stat.rx_intr_bfr_passed_to_stack; |
| 1764 | netif_rx(skb); |
| 1765 | dev->last_rx = jiffies; |
| 1766 | } |
| 1767 | |
| 1768 | } else { |
| 1769 | |
| 1770 | if (net_ratelimit()){ |
| 1771 | printk(KERN_INFO "%s: no socket buffers available!\n", |
| 1772 | card->devname); |
| 1773 | } |
| 1774 | ++card->wandev.stats.rx_dropped; |
| 1775 | ++ppp_priv_area->rx_intr_stat.rx_intr_no_socket; |
| 1776 | } |
| 1777 | |
| 1778 | } else { |
| 1779 | ++card->statistics.rx_intr_dev_not_started; |
| 1780 | } |
| 1781 | |
| 1782 | /* Release buffer element and calculate a pointer to the next one */ |
| 1783 | rxbuf->flag = 0x00; |
| 1784 | card->rxmb = ++rxbuf; |
| 1785 | if ((void*)rxbuf > card->u.p.rxbuf_last) |
| 1786 | card->rxmb = card->u.p.rxbuf_base; |
| 1787 | } |
| 1788 | |
| 1789 | |
| 1790 | void event_intr (sdla_t *card) |
| 1791 | { |
| 1792 | |
| 1793 | struct net_device* dev = card->wandev.dev; |
| 1794 | ppp_private_area_t* ppp_priv_area = dev->priv; |
| 1795 | volatile ppp_flags_t *flags = card->flags; |
| 1796 | |
| 1797 | switch (flags->iflag){ |
| 1798 | |
| 1799 | case PPP_INTR_MODEM: /* modem status change (DCD, CTS) 0x04 (bit 2)*/ |
| 1800 | |
| 1801 | if (net_ratelimit()){ |
| 1802 | printk (KERN_INFO "%s: Modem status: DCD=%s CTS=%s\n", |
| 1803 | card->devname, DCD(flags->mstatus), CTS(flags->mstatus)); |
| 1804 | } |
| 1805 | break; |
| 1806 | |
| 1807 | case PPP_INTR_DISC: /* Data link disconnected 0x10 (bit 4)*/ |
| 1808 | |
| 1809 | NEX_PRINTK (KERN_INFO "Data link disconnected intr Cause %X\n", |
| 1810 | flags->disc_cause); |
| 1811 | |
| 1812 | if (flags->disc_cause & |
| 1813 | (PPP_LOCAL_TERMINATION | PPP_DCD_CTS_DROP | |
| 1814 | PPP_REMOTE_TERMINATION)) { |
| 1815 | |
| 1816 | if (card->u.p.ip_mode == WANOPT_PPP_PEER) { |
| 1817 | set_bit(0,&Read_connection_info); |
| 1818 | } |
| 1819 | wanpipe_set_state(card, WAN_DISCONNECTED); |
| 1820 | |
| 1821 | show_disc_cause(card, flags->disc_cause); |
| 1822 | ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT; |
| 1823 | flags->imask |= PPP_INTR_TIMER; |
| 1824 | trigger_ppp_poll(dev); |
| 1825 | } |
| 1826 | break; |
| 1827 | |
| 1828 | case PPP_INTR_OPEN: /* Data link open 0x20 (bit 5)*/ |
| 1829 | |
| 1830 | NEX_PRINTK (KERN_INFO "%s: PPP Link Open, LCP=%s IP=%s\n", |
| 1831 | card->devname,LCP(flags->lcp_state), |
| 1832 | IP(flags->ip_state)); |
| 1833 | |
| 1834 | if (flags->lcp_state == 0x09 && |
| 1835 | (flags->ip_state == 0x09 || flags->ipx_state == 0x09)){ |
| 1836 | |
| 1837 | /* Initialize the polling timer and set the state |
| 1838 | * to WAN_CONNNECTED */ |
| 1839 | |
| 1840 | |
| 1841 | /* BUG FIX: When the protocol restarts, during heavy |
| 1842 | * traffic, board tx buffers and driver tx buffers |
| 1843 | * can go out of sync. This checks the condition |
| 1844 | * and if the tx buffers are out of sync, the |
| 1845 | * protocols are restarted. |
| 1846 | * I don't know why the board tx buffer is out |
| 1847 | * of sync. It could be that a packets is tx |
| 1848 | * while the link is down, but that is not |
| 1849 | * possible. The other possiblility is that the |
| 1850 | * firmware doesn't reinitialize properly. |
| 1851 | * FIXME: A better fix should be found. |
| 1852 | */ |
| 1853 | if (detect_and_fix_tx_bug(card)){ |
| 1854 | |
| 1855 | ppp_comm_disable(card); |
| 1856 | |
| 1857 | wanpipe_set_state(card, WAN_DISCONNECTED); |
| 1858 | |
| 1859 | ppp_priv_area->timer_int_enabled |= |
| 1860 | TMR_INT_ENABLED_PPP_EVENT; |
| 1861 | flags->imask |= PPP_INTR_TIMER; |
| 1862 | break; |
| 1863 | } |
| 1864 | |
| 1865 | card->state_tick = jiffies; |
| 1866 | wanpipe_set_state(card, WAN_CONNECTED); |
| 1867 | |
| 1868 | NEX_PRINTK(KERN_INFO "CON: L Tx: %lx B Tx: %lx || L Rx %lx B Rx %lx\n", |
| 1869 | (unsigned long)card->u.p.txbuf, *card->u.p.txbuf_next, |
| 1870 | (unsigned long)card->rxmb, *card->u.p.rxbuf_next); |
| 1871 | |
| 1872 | /* Tell timer interrupt that PPP event occurred */ |
| 1873 | ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT; |
| 1874 | flags->imask |= PPP_INTR_TIMER; |
| 1875 | |
| 1876 | /* If we are in PEER mode, we must first obtain the |
| 1877 | * IP information and then go into the poll routine */ |
| 1878 | if (card->u.p.ip_mode != WANOPT_PPP_PEER){ |
| 1879 | trigger_ppp_poll(dev); |
| 1880 | } |
| 1881 | } |
| 1882 | break; |
| 1883 | |
| 1884 | case PPP_INTR_DROP_DTR: /* DTR drop timeout expired 0x40 bit 6 */ |
| 1885 | |
| 1886 | NEX_PRINTK(KERN_INFO "DTR Drop Timeout Interrrupt \n"); |
| 1887 | |
| 1888 | if (card->u.p.ip_mode == WANOPT_PPP_PEER) { |
| 1889 | set_bit(0,&Read_connection_info); |
| 1890 | } |
| 1891 | |
| 1892 | wanpipe_set_state(card, WAN_DISCONNECTED); |
| 1893 | |
| 1894 | show_disc_cause(card, flags->disc_cause); |
| 1895 | ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT; |
| 1896 | flags->imask |= PPP_INTR_TIMER; |
| 1897 | trigger_ppp_poll(dev); |
| 1898 | break; |
| 1899 | |
| 1900 | default: |
| 1901 | printk(KERN_INFO "%s: Error, Invalid PPP Event\n",card->devname); |
| 1902 | } |
| 1903 | } |
| 1904 | |
| 1905 | |
| 1906 | |
| 1907 | /* TIMER INTERRUPT */ |
| 1908 | |
| 1909 | void timer_intr (sdla_t *card) |
| 1910 | { |
| 1911 | |
| 1912 | struct net_device* dev = card->wandev.dev; |
| 1913 | ppp_private_area_t* ppp_priv_area = dev->priv; |
| 1914 | ppp_flags_t *flags = card->flags; |
| 1915 | |
| 1916 | |
| 1917 | if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_CONFIG){ |
| 1918 | if (!config_ppp(card)){ |
| 1919 | ppp_priv_area->timer_int_enabled &= |
| 1920 | ~TMR_INT_ENABLED_CONFIG; |
| 1921 | } |
| 1922 | } |
| 1923 | |
| 1924 | /* Update statistics */ |
| 1925 | if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_UPDATE){ |
| 1926 | ppp_get_err_stats(card); |
| 1927 | if(!(--ppp_priv_area->update_comms_stats)){ |
| 1928 | ppp_priv_area->timer_int_enabled &= |
| 1929 | ~TMR_INT_ENABLED_UPDATE; |
| 1930 | } |
| 1931 | } |
| 1932 | |
| 1933 | /* PPIPEMON UDP request */ |
| 1934 | |
| 1935 | if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_UDP){ |
| 1936 | process_udp_mgmt_pkt(card,dev, ppp_priv_area); |
| 1937 | ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_UDP; |
| 1938 | } |
| 1939 | |
| 1940 | /* PPP Event */ |
| 1941 | if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_PPP_EVENT){ |
| 1942 | |
| 1943 | if (card->wandev.state == WAN_DISCONNECTED){ |
| 1944 | retrigger_comm(card); |
| 1945 | } |
| 1946 | |
| 1947 | /* If the state is CONNECTING, it means that communicatins were |
| 1948 | * enabled. When the remote side enables its comminication we |
| 1949 | * should get an interrupt PPP_INTR_OPEN, thus turn off polling |
| 1950 | */ |
| 1951 | |
| 1952 | else if (card->wandev.state == WAN_CONNECTING){ |
| 1953 | /* Turn off the timer interrupt */ |
| 1954 | ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_PPP_EVENT; |
| 1955 | } |
| 1956 | |
| 1957 | /* If state is connected and we are in PEER mode |
| 1958 | * poll for an IP address which will be provided by remote end. |
| 1959 | */ |
| 1960 | else if ((card->wandev.state == WAN_CONNECTED && |
| 1961 | card->u.p.ip_mode == WANOPT_PPP_PEER) && |
| 1962 | test_bit(0,&Read_connection_info)){ |
| 1963 | |
| 1964 | card->state_tick = jiffies; |
| 1965 | if (read_connection_info (card)){ |
| 1966 | printk(KERN_INFO "%s: Failed to read PEER IP Addresses\n", |
| 1967 | card->devname); |
| 1968 | }else{ |
| 1969 | clear_bit(0,&Read_connection_info); |
| 1970 | set_bit(1,&Read_connection_info); |
| 1971 | trigger_ppp_poll(dev); |
| 1972 | } |
| 1973 | }else{ |
| 1974 | //FIXME Put the comment back int |
| 1975 | ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_PPP_EVENT; |
| 1976 | } |
| 1977 | |
| 1978 | }/* End of PPP_EVENT */ |
| 1979 | |
| 1980 | |
| 1981 | /* Only disable the timer interrupt if there are no udp, statistic */ |
| 1982 | /* updates or events pending */ |
| 1983 | if(!ppp_priv_area->timer_int_enabled) { |
| 1984 | flags->imask &= ~PPP_INTR_TIMER; |
| 1985 | } |
| 1986 | } |
| 1987 | |
| 1988 | |
| 1989 | static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_IPX, unsigned long network_number, unsigned short proto) |
| 1990 | { |
| 1991 | int i; |
| 1992 | |
| 1993 | if( proto == htons(ETH_P_IPX) ) { |
| 1994 | //It's an IPX packet |
| 1995 | if(!enable_IPX) { |
| 1996 | //Return 1 so we don't pass it up the stack. |
| 1997 | return 1; |
| 1998 | } |
| 1999 | } else { |
| 2000 | //It's not IPX so pass it up the stack. |
| 2001 | return 0; |
| 2002 | } |
| 2003 | |
| 2004 | if( sendpacket[16] == 0x90 && |
| 2005 | sendpacket[17] == 0x04) |
| 2006 | { |
| 2007 | //It's IPXWAN |
| 2008 | |
| 2009 | if( sendpacket[2] == 0x02 && |
| 2010 | sendpacket[34] == 0x00) |
| 2011 | { |
| 2012 | //It's a timer request packet |
| 2013 | printk(KERN_INFO "%s: Received IPXWAN Timer Request packet\n",devname); |
| 2014 | |
| 2015 | //Go through the routing options and answer no to every |
| 2016 | //option except Unnumbered RIP/SAP |
| 2017 | for(i = 41; sendpacket[i] == 0x00; i += 5) |
| 2018 | { |
| 2019 | //0x02 is the option for Unnumbered RIP/SAP |
| 2020 | if( sendpacket[i + 4] != 0x02) |
| 2021 | { |
| 2022 | sendpacket[i + 1] = 0; |
| 2023 | } |
| 2024 | } |
| 2025 | |
| 2026 | //Skip over the extended Node ID option |
| 2027 | if( sendpacket[i] == 0x04 ) |
| 2028 | { |
| 2029 | i += 8; |
| 2030 | } |
| 2031 | |
| 2032 | //We also want to turn off all header compression opt. |
| 2033 | for(; sendpacket[i] == 0x80 ;) |
| 2034 | { |
| 2035 | sendpacket[i + 1] = 0; |
| 2036 | i += (sendpacket[i + 2] << 8) + (sendpacket[i + 3]) + 4; |
| 2037 | } |
| 2038 | |
| 2039 | //Set the packet type to timer response |
| 2040 | sendpacket[34] = 0x01; |
| 2041 | |
| 2042 | printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n",devname); |
| 2043 | } |
| 2044 | else if( sendpacket[34] == 0x02 ) |
| 2045 | { |
| 2046 | //This is an information request packet |
| 2047 | printk(KERN_INFO "%s: Received IPXWAN Information Request packet\n",devname); |
| 2048 | |
| 2049 | //Set the packet type to information response |
| 2050 | sendpacket[34] = 0x03; |
| 2051 | |
| 2052 | //Set the router name |
| 2053 | sendpacket[51] = 'P'; |
| 2054 | sendpacket[52] = 'T'; |
| 2055 | sendpacket[53] = 'P'; |
| 2056 | sendpacket[54] = 'I'; |
| 2057 | sendpacket[55] = 'P'; |
| 2058 | sendpacket[56] = 'E'; |
| 2059 | sendpacket[57] = '-'; |
| 2060 | sendpacket[58] = CVHexToAscii(network_number >> 28); |
| 2061 | sendpacket[59] = CVHexToAscii((network_number & 0x0F000000)>> 24); |
| 2062 | sendpacket[60] = CVHexToAscii((network_number & 0x00F00000)>> 20); |
| 2063 | sendpacket[61] = CVHexToAscii((network_number & 0x000F0000)>> 16); |
| 2064 | sendpacket[62] = CVHexToAscii((network_number & 0x0000F000)>> 12); |
| 2065 | sendpacket[63] = CVHexToAscii((network_number & 0x00000F00)>> 8); |
| 2066 | sendpacket[64] = CVHexToAscii((network_number & 0x000000F0)>> 4); |
| 2067 | sendpacket[65] = CVHexToAscii(network_number & 0x0000000F); |
| 2068 | for(i = 66; i < 99; i+= 1) |
| 2069 | { |
| 2070 | sendpacket[i] = 0; |
| 2071 | } |
| 2072 | |
| 2073 | printk(KERN_INFO "%s: Sending IPXWAN Information Response packet\n",devname); |
| 2074 | } |
| 2075 | else |
| 2076 | { |
| 2077 | printk(KERN_INFO "%s: Unknown IPXWAN packet!\n",devname); |
| 2078 | return 0; |
| 2079 | } |
| 2080 | |
| 2081 | //Set the WNodeID to our network address |
| 2082 | sendpacket[35] = (unsigned char)(network_number >> 24); |
| 2083 | sendpacket[36] = (unsigned char)((network_number & 0x00FF0000) >> 16); |
| 2084 | sendpacket[37] = (unsigned char)((network_number & 0x0000FF00) >> 8); |
| 2085 | sendpacket[38] = (unsigned char)(network_number & 0x000000FF); |
| 2086 | |
| 2087 | return 1; |
| 2088 | } else { |
| 2089 | //If we get here it's an IPX-data packet, so it'll get passed up the stack. |
| 2090 | |
| 2091 | //switch the network numbers |
| 2092 | switch_net_numbers(sendpacket, network_number, 1); |
| 2093 | return 0; |
| 2094 | } |
| 2095 | } |
| 2096 | |
| 2097 | /****** Background Polling Routines ****************************************/ |
| 2098 | |
| 2099 | /* All polling functions are invoked by the TIMER interrupt in the wpp_isr |
| 2100 | * routine. |
| 2101 | */ |
| 2102 | |
| 2103 | /*============================================================================ |
| 2104 | * Monitor active link phase. |
| 2105 | */ |
| 2106 | static void process_route (sdla_t *card) |
| 2107 | { |
| 2108 | ppp_flags_t *flags = card->flags; |
| 2109 | struct net_device *dev = card->wandev.dev; |
| 2110 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 2111 | |
| 2112 | if ((card->u.p.ip_mode == WANOPT_PPP_PEER) && |
| 2113 | (flags->ip_state == 0x09)){ |
| 2114 | |
| 2115 | /* We get ip_local from the firmware in PEER mode. |
| 2116 | * Therefore, if ip_local is 0, we failed to obtain |
| 2117 | * the remote IP address. */ |
| 2118 | if (ppp_priv_area->ip_local == 0) |
| 2119 | return; |
| 2120 | |
| 2121 | printk(KERN_INFO "%s: IPCP State Opened.\n", card->devname); |
| 2122 | if (read_info( card )) { |
| 2123 | printk(KERN_INFO |
| 2124 | "%s: An error occurred in IP assignment.\n", |
| 2125 | card->devname); |
| 2126 | } else { |
| 2127 | struct in_device *in_dev = dev->ip_ptr; |
| 2128 | if (in_dev != NULL ) { |
| 2129 | struct in_ifaddr *ifa = in_dev->ifa_list; |
| 2130 | |
| 2131 | printk(KERN_INFO "%s: Assigned Lcl. Addr: %u.%u.%u.%u\n", |
| 2132 | card->devname, NIPQUAD(ifa->ifa_local)); |
| 2133 | printk(KERN_INFO "%s: Assigned Rmt. Addr: %u.%u.%u.%u\n", |
| 2134 | card->devname, NIPQUAD(ifa->ifa_address)); |
| 2135 | }else{ |
| 2136 | printk(KERN_INFO |
| 2137 | "%s: Error: Failed to add a route for PPP interface %s\n", |
| 2138 | card->devname,dev->name); |
| 2139 | } |
| 2140 | } |
| 2141 | } |
| 2142 | } |
| 2143 | |
| 2144 | /*============================================================================ |
| 2145 | * Monitor physical link disconnected phase. |
| 2146 | * o if interface is up and the hold-down timeout has expired, then retry |
| 2147 | * connection. |
| 2148 | */ |
| 2149 | static void retrigger_comm(sdla_t *card) |
| 2150 | { |
| 2151 | struct net_device *dev = card->wandev.dev; |
| 2152 | |
| 2153 | if (dev && ((jiffies - card->state_tick) > HOLD_DOWN_TIME)) { |
| 2154 | |
| 2155 | wanpipe_set_state(card, WAN_CONNECTING); |
| 2156 | |
| 2157 | if(ppp_comm_enable(card) == CMD_OK){ |
| 2158 | init_ppp_tx_rx_buff( card ); |
| 2159 | } |
| 2160 | } |
| 2161 | } |
| 2162 | |
| 2163 | /****** Miscellaneous Functions *********************************************/ |
| 2164 | |
| 2165 | /*============================================================================ |
| 2166 | * Configure S508 adapter. |
| 2167 | */ |
| 2168 | static int config508(struct net_device *dev, sdla_t *card) |
| 2169 | { |
| 2170 | ppp508_conf_t cfg; |
| 2171 | struct in_device *in_dev = dev->ip_ptr; |
| 2172 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 2173 | |
| 2174 | /* Prepare PPP configuration structure */ |
| 2175 | memset(&cfg, 0, sizeof(ppp508_conf_t)); |
| 2176 | |
| 2177 | if (card->wandev.clocking) |
| 2178 | cfg.line_speed = card->wandev.bps; |
| 2179 | |
| 2180 | if (card->wandev.interface == WANOPT_RS232) |
| 2181 | cfg.conf_flags |= INTERFACE_LEVEL_RS232; |
| 2182 | |
| 2183 | |
| 2184 | cfg.conf_flags |= DONT_TERMINATE_LNK_MAX_CONFIG; /*send Configure-Request packets forever*/ |
| 2185 | cfg.txbuf_percent = PERCENT_TX_BUFF; /* % of Tx bufs */ |
| 2186 | cfg.mtu_local = card->wandev.mtu; |
| 2187 | cfg.mtu_remote = card->wandev.mtu; /* Default */ |
| 2188 | cfg.restart_tmr = TIME_BETWEEN_CONF_REQ; /* 30 = 3sec */ |
| 2189 | cfg.auth_rsrt_tmr = TIME_BETWEEN_PAP_CHAP_REQ; /* 30 = 3sec */ |
| 2190 | cfg.auth_wait_tmr = WAIT_PAP_CHAP_WITHOUT_REPLY; /* 300 = 30s */ |
| 2191 | cfg.mdm_fail_tmr = WAIT_AFTER_DCD_CTS_LOW; /* 5 = 0.5s */ |
| 2192 | cfg.dtr_drop_tmr = TIME_DCD_CTS_LOW_AFTER_LNK_DOWN; /* 10 = 1s */ |
| 2193 | cfg.connect_tmout = WAIT_DCD_HIGH_AFTER_ENABLE_COMM; /* 900 = 90s */ |
| 2194 | cfg.conf_retry = MAX_CONF_REQ_WITHOUT_REPLY; /* 10 = 1s */ |
| 2195 | cfg.term_retry = MAX_TERM_REQ_WITHOUT_REPLY; /* 2 times */ |
| 2196 | cfg.fail_retry = NUM_CONF_NAK_WITHOUT_REPLY; /* 5 times */ |
| 2197 | cfg.auth_retry = NUM_AUTH_REQ_WITHOUT_REPLY; /* 10 times */ |
| 2198 | |
| 2199 | |
| 2200 | if( !card->u.p.authenticator ) { |
| 2201 | printk(KERN_INFO "%s: Device is not configured as an authenticator\n", |
| 2202 | card->devname); |
| 2203 | cfg.auth_options = NO_AUTHENTICATION; |
| 2204 | }else{ |
| 2205 | printk(KERN_INFO "%s: Device is configured as an authenticator\n", |
| 2206 | card->devname); |
| 2207 | cfg.auth_options = INBOUND_AUTH; |
| 2208 | } |
| 2209 | |
| 2210 | if( ppp_priv_area->pap == WANOPT_YES){ |
| 2211 | cfg.auth_options |=PAP_AUTH; |
| 2212 | printk(KERN_INFO "%s: Pap enabled\n", card->devname); |
| 2213 | } |
| 2214 | if( ppp_priv_area->chap == WANOPT_YES){ |
| 2215 | cfg.auth_options |= CHAP_AUTH; |
| 2216 | printk(KERN_INFO "%s: Chap enabled\n", card->devname); |
| 2217 | } |
| 2218 | |
| 2219 | |
| 2220 | if (ppp_priv_area->enable_IPX == WANOPT_YES){ |
| 2221 | printk(KERN_INFO "%s: Enabling IPX Protocol\n",card->devname); |
| 2222 | cfg.ipx_options = ENABLE_IPX | ROUTING_PROT_DEFAULT; |
| 2223 | }else{ |
| 2224 | cfg.ipx_options = DISABLE_IPX; |
| 2225 | } |
| 2226 | |
| 2227 | switch (card->u.p.ip_mode) { |
| 2228 | |
| 2229 | case WANOPT_PPP_STATIC: |
| 2230 | |
| 2231 | printk(KERN_INFO "%s: PPP IP Mode: STATIC\n",card->devname); |
| 2232 | cfg.ip_options = L_AND_R_IP_NO_ASSIG | |
| 2233 | ENABLE_IP; |
| 2234 | cfg.ip_local = in_dev->ifa_list->ifa_local; |
| 2235 | cfg.ip_remote = in_dev->ifa_list->ifa_address; |
| 2236 | /* Debugging code used to check that IP addresses |
| 2237 | * obtained from the kernel are correct */ |
| 2238 | |
| 2239 | NEX_PRINTK(KERN_INFO "Local %u.%u.%u.%u Remote %u.%u.%u.%u Name %s\n", |
| 2240 | NIPQUAD(ip_local),NIPQUAD(ip_remote), dev->name); |
| 2241 | break; |
| 2242 | |
| 2243 | case WANOPT_PPP_HOST: |
| 2244 | |
| 2245 | printk(KERN_INFO "%s: PPP IP Mode: HOST\n",card->devname); |
| 2246 | cfg.ip_options = L_IP_LOCAL_ASSIG | |
| 2247 | R_IP_LOCAL_ASSIG | |
| 2248 | ENABLE_IP; |
| 2249 | cfg.ip_local = in_dev->ifa_list->ifa_local; |
| 2250 | cfg.ip_remote = in_dev->ifa_list->ifa_address; |
| 2251 | /* Debugging code used to check that IP addresses |
| 2252 | * obtained from the kernel are correct */ |
| 2253 | NEX_PRINTK (KERN_INFO "Local %u.%u.%u.%u Remote %u.%u.%u.%u Name %s\n", |
| 2254 | NIPQUAD(ip_local),NIPQUAD(ip_remote), dev->name); |
| 2255 | |
| 2256 | break; |
| 2257 | |
| 2258 | case WANOPT_PPP_PEER: |
| 2259 | |
| 2260 | printk(KERN_INFO "%s: PPP IP Mode: PEER\n",card->devname); |
| 2261 | cfg.ip_options = L_IP_REMOTE_ASSIG | |
| 2262 | R_IP_REMOTE_ASSIG | |
| 2263 | ENABLE_IP; |
| 2264 | cfg.ip_local = 0x00; |
| 2265 | cfg.ip_remote = 0x00; |
| 2266 | break; |
| 2267 | |
| 2268 | default: |
| 2269 | printk(KERN_INFO "%s: ERROR: Unsupported PPP Mode Selected\n", |
| 2270 | card->devname); |
| 2271 | printk(KERN_INFO "%s: PPP IP Modes: STATIC, PEER or HOST\n", |
| 2272 | card->devname); |
| 2273 | return 1; |
| 2274 | } |
| 2275 | |
| 2276 | return ppp_configure(card, &cfg); |
| 2277 | } |
| 2278 | |
| 2279 | /*============================================================================ |
| 2280 | * Show disconnection cause. |
| 2281 | */ |
| 2282 | static void show_disc_cause(sdla_t *card, unsigned cause) |
| 2283 | { |
| 2284 | if (cause & 0x0802) |
| 2285 | |
| 2286 | printk(KERN_INFO "%s: link terminated by peer\n", |
| 2287 | card->devname); |
| 2288 | |
| 2289 | else if (cause & 0x0004) |
| 2290 | |
| 2291 | printk(KERN_INFO "%s: link terminated by user\n", |
| 2292 | card->devname); |
| 2293 | |
| 2294 | else if (cause & 0x0008) |
| 2295 | |
| 2296 | printk(KERN_INFO "%s: authentication failed\n", card->devname); |
| 2297 | |
| 2298 | else if (cause & 0x0010) |
| 2299 | |
| 2300 | printk(KERN_INFO |
| 2301 | "%s: authentication protocol negotiation failed\n", |
| 2302 | card->devname); |
| 2303 | |
| 2304 | else if (cause & 0x0020) |
| 2305 | |
| 2306 | printk(KERN_INFO |
| 2307 | "%s: peer's request for authentication rejected\n", |
| 2308 | card->devname); |
| 2309 | |
| 2310 | else if (cause & 0x0040) |
| 2311 | |
| 2312 | printk(KERN_INFO "%s: MRU option rejected by peer\n", |
| 2313 | card->devname); |
| 2314 | |
| 2315 | else if (cause & 0x0080) |
| 2316 | |
| 2317 | printk(KERN_INFO "%s: peer's MRU was too small\n", |
| 2318 | card->devname); |
| 2319 | |
| 2320 | else if (cause & 0x0100) |
| 2321 | |
| 2322 | printk(KERN_INFO "%s: failed to negotiate peer's LCP options\n", |
| 2323 | card->devname); |
| 2324 | |
| 2325 | else if (cause & 0x0200) |
| 2326 | |
| 2327 | printk(KERN_INFO "%s: failed to negotiate peer's IPCP options\n" |
| 2328 | , card->devname); |
| 2329 | |
| 2330 | else if (cause & 0x0400) |
| 2331 | |
| 2332 | printk(KERN_INFO |
| 2333 | "%s: failed to negotiate peer's IPXCP options\n", |
| 2334 | card->devname); |
| 2335 | } |
| 2336 | |
| 2337 | /*============================================================================= |
| 2338 | * Process UDP call of type PTPIPEAB. |
| 2339 | */ |
| 2340 | static void process_udp_mgmt_pkt(sdla_t *card, struct net_device *dev, |
| 2341 | ppp_private_area_t *ppp_priv_area ) |
| 2342 | { |
| 2343 | unsigned char buf2[5]; |
| 2344 | unsigned char *buf; |
| 2345 | unsigned int frames, len; |
| 2346 | struct sk_buff *new_skb; |
| 2347 | unsigned short data_length, buffer_length, real_len; |
| 2348 | unsigned long data_ptr; |
| 2349 | int udp_mgmt_req_valid = 1; |
| 2350 | ppp_mbox_t *mbox = card->mbox; |
| 2351 | struct timeval tv; |
| 2352 | int err; |
| 2353 | ppp_udp_pkt_t *ppp_udp_pkt = (ppp_udp_pkt_t*)&ppp_priv_area->udp_pkt_data; |
| 2354 | |
| 2355 | memcpy(&buf2, &card->wandev.udp_port, 2 ); |
| 2356 | |
| 2357 | |
| 2358 | if(ppp_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) { |
| 2359 | |
| 2360 | switch(ppp_udp_pkt->cblock.command) { |
| 2361 | |
| 2362 | case PPIPE_GET_IBA_DATA: |
| 2363 | case PPP_READ_CONFIG: |
| 2364 | case PPP_GET_CONNECTION_INFO: |
| 2365 | case PPIPE_ROUTER_UP_TIME: |
| 2366 | case PPP_READ_STATISTICS: |
| 2367 | case PPP_READ_ERROR_STATS: |
| 2368 | case PPP_READ_PACKET_STATS: |
| 2369 | case PPP_READ_LCP_STATS: |
| 2370 | case PPP_READ_IPCP_STATS: |
| 2371 | case PPP_READ_IPXCP_STATS: |
| 2372 | case PPP_READ_PAP_STATS: |
| 2373 | case PPP_READ_CHAP_STATS: |
| 2374 | case PPP_READ_CODE_VERSION: |
| 2375 | udp_mgmt_req_valid = 1; |
| 2376 | break; |
| 2377 | |
| 2378 | default: |
| 2379 | udp_mgmt_req_valid = 0; |
| 2380 | break; |
| 2381 | } |
| 2382 | } |
| 2383 | |
| 2384 | if(!udp_mgmt_req_valid) { |
| 2385 | |
| 2386 | /* set length to 0 */ |
| 2387 | ppp_udp_pkt->cblock.length = 0x00; |
| 2388 | |
| 2389 | /* set return code */ |
| 2390 | ppp_udp_pkt->cblock.result = 0xCD; |
| 2391 | ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_direction_err; |
| 2392 | |
| 2393 | if (net_ratelimit()){ |
| 2394 | printk(KERN_INFO |
| 2395 | "%s: Warning, Illegal UDP command attempted from network: %x\n", |
| 2396 | card->devname,ppp_udp_pkt->cblock.command); |
| 2397 | } |
| 2398 | } else { |
| 2399 | /* Initialize the trace element */ |
| 2400 | trace_element_t trace_element; |
| 2401 | |
| 2402 | switch (ppp_udp_pkt->cblock.command){ |
| 2403 | |
| 2404 | /* PPIPE_ENABLE_TRACING */ |
| 2405 | case PPIPE_ENABLE_TRACING: |
| 2406 | if (!card->TracingEnabled) { |
| 2407 | |
| 2408 | /* OPERATE_DATALINE_MONITOR */ |
| 2409 | mbox->cmd.command = PPP_DATALINE_MONITOR; |
| 2410 | mbox->cmd.length = 0x01; |
| 2411 | mbox->data[0] = ppp_udp_pkt->data[0]; |
| 2412 | err = sdla_exec(mbox) ? |
| 2413 | mbox->cmd.result : CMD_TIMEOUT; |
| 2414 | |
| 2415 | if (err != CMD_OK) { |
| 2416 | |
| 2417 | ppp_error(card, err, mbox); |
| 2418 | card->TracingEnabled = 0; |
| 2419 | |
| 2420 | /* set the return code */ |
| 2421 | |
| 2422 | ppp_udp_pkt->cblock.result = mbox->cmd.result; |
| 2423 | mbox->cmd.length = 0; |
| 2424 | break; |
| 2425 | } |
| 2426 | |
| 2427 | sdla_peek(&card->hw, 0xC000, &buf2, 2); |
| 2428 | |
| 2429 | ppp_priv_area->curr_trace_addr = 0; |
| 2430 | memcpy(&ppp_priv_area->curr_trace_addr, &buf2, 2); |
| 2431 | ppp_priv_area->start_trace_addr = |
| 2432 | ppp_priv_area->curr_trace_addr; |
| 2433 | ppp_priv_area->end_trace_addr = |
| 2434 | ppp_priv_area->start_trace_addr + END_OFFSET; |
| 2435 | |
| 2436 | /* MAX_SEND_BUFFER_SIZE - 28 (IP header) |
| 2437 | - 32 (ppipemon CBLOCK) */ |
| 2438 | available_buffer_space = MAX_LGTH_UDP_MGNT_PKT - |
| 2439 | sizeof(ip_pkt_t)- |
| 2440 | sizeof(udp_pkt_t)- |
| 2441 | sizeof(wp_mgmt_t)- |
| 2442 | sizeof(cblock_t); |
| 2443 | } |
| 2444 | ppp_udp_pkt->cblock.result = 0; |
| 2445 | mbox->cmd.length = 0; |
| 2446 | card->TracingEnabled = 1; |
| 2447 | break; |
| 2448 | |
| 2449 | /* PPIPE_DISABLE_TRACING */ |
| 2450 | case PPIPE_DISABLE_TRACING: |
| 2451 | |
| 2452 | if(card->TracingEnabled) { |
| 2453 | |
| 2454 | /* OPERATE_DATALINE_MONITOR */ |
| 2455 | mbox->cmd.command = 0x33; |
| 2456 | mbox->cmd.length = 1; |
| 2457 | mbox->data[0] = 0x00; |
| 2458 | err = sdla_exec(mbox) ? |
| 2459 | mbox->cmd.result : CMD_TIMEOUT; |
| 2460 | |
| 2461 | } |
| 2462 | |
| 2463 | /*set return code*/ |
| 2464 | ppp_udp_pkt->cblock.result = 0; |
| 2465 | mbox->cmd.length = 0; |
| 2466 | card->TracingEnabled = 0; |
| 2467 | break; |
| 2468 | |
| 2469 | /* PPIPE_GET_TRACE_INFO */ |
| 2470 | case PPIPE_GET_TRACE_INFO: |
| 2471 | |
| 2472 | if(!card->TracingEnabled) { |
| 2473 | /* set return code */ |
| 2474 | ppp_udp_pkt->cblock.result = 1; |
| 2475 | mbox->cmd.length = 0; |
| 2476 | } |
| 2477 | |
| 2478 | buffer_length = 0; |
| 2479 | |
| 2480 | /* frames < 62, where 62 is the number of trace |
| 2481 | information elements. There is in total 496 |
| 2482 | bytes of space and each trace information |
| 2483 | element is 8 bytes. |
| 2484 | */ |
| 2485 | for ( frames=0; frames<62; frames++) { |
| 2486 | |
| 2487 | trace_pkt_t *trace_pkt = (trace_pkt_t *) |
| 2488 | &ppp_udp_pkt->data[buffer_length]; |
| 2489 | |
| 2490 | /* Read the whole trace packet */ |
| 2491 | sdla_peek(&card->hw, ppp_priv_area->curr_trace_addr, |
| 2492 | &trace_element, sizeof(trace_element_t)); |
| 2493 | |
| 2494 | /* no data on board so exit */ |
| 2495 | if( trace_element.opp_flag == 0x00 ) |
| 2496 | break; |
| 2497 | |
| 2498 | data_ptr = trace_element.trace_data_ptr; |
| 2499 | |
| 2500 | /* See if there is actual data on the trace buffer */ |
| 2501 | if (data_ptr){ |
| 2502 | data_length = trace_element.trace_length; |
| 2503 | }else{ |
| 2504 | data_length = 0; |
| 2505 | ppp_udp_pkt->data[0] |= 0x02; |
| 2506 | } |
| 2507 | |
| 2508 | //FIXME: Do we need this check |
| 2509 | if ((available_buffer_space - buffer_length) |
| 2510 | < (sizeof(trace_element_t)+1)){ |
| 2511 | |
| 2512 | /*indicate we have more frames |
| 2513 | * on board and exit |
| 2514 | */ |
| 2515 | ppp_udp_pkt->data[0] |= 0x02; |
| 2516 | break; |
| 2517 | } |
| 2518 | |
| 2519 | trace_pkt->status = trace_element.trace_type; |
| 2520 | trace_pkt->time_stamp = trace_element.trace_time_stamp; |
| 2521 | trace_pkt->real_length = trace_element.trace_length; |
| 2522 | |
| 2523 | real_len = trace_element.trace_length; |
| 2524 | |
| 2525 | if(data_ptr == 0){ |
| 2526 | trace_pkt->data_avail = 0x00; |
| 2527 | }else{ |
| 2528 | /* we can take it next time */ |
| 2529 | if ((available_buffer_space - buffer_length)< |
| 2530 | (real_len + sizeof(trace_pkt_t))){ |
| 2531 | |
| 2532 | ppp_udp_pkt->data[0] |= 0x02; |
| 2533 | break; |
| 2534 | } |
| 2535 | trace_pkt->data_avail = 0x01; |
| 2536 | |
| 2537 | /* get the data */ |
| 2538 | sdla_peek(&card->hw, data_ptr, |
| 2539 | &trace_pkt->data, |
| 2540 | real_len); |
| 2541 | } |
| 2542 | /* zero the opp flag to |
| 2543 | show we got the frame */ |
| 2544 | buf2[0] = 0x00; |
| 2545 | sdla_poke(&card->hw, ppp_priv_area->curr_trace_addr, |
| 2546 | &buf2, 1); |
| 2547 | |
| 2548 | /* now move onto the next |
| 2549 | frame */ |
| 2550 | ppp_priv_area->curr_trace_addr += 8; |
| 2551 | |
| 2552 | /* check if we passed the last address */ |
| 2553 | if ( ppp_priv_area->curr_trace_addr >= |
| 2554 | ppp_priv_area->end_trace_addr){ |
| 2555 | |
| 2556 | ppp_priv_area->curr_trace_addr = |
| 2557 | ppp_priv_area->start_trace_addr; |
| 2558 | } |
| 2559 | |
| 2560 | /* update buffer length and make sure its even */ |
| 2561 | |
| 2562 | if ( trace_pkt->data_avail == 0x01 ) { |
| 2563 | buffer_length += real_len - 1; |
| 2564 | } |
| 2565 | |
| 2566 | /* for the header */ |
| 2567 | buffer_length += 8; |
| 2568 | |
| 2569 | if( buffer_length & 0x0001 ) |
| 2570 | buffer_length += 1; |
| 2571 | } |
| 2572 | |
| 2573 | /* ok now set the total number of frames passed |
| 2574 | in the high 5 bits */ |
| 2575 | ppp_udp_pkt->data[0] |= (frames << 2); |
| 2576 | |
| 2577 | /* set the data length */ |
| 2578 | mbox->cmd.length = buffer_length; |
| 2579 | ppp_udp_pkt->cblock.length = buffer_length; |
| 2580 | |
| 2581 | /* set return code */ |
| 2582 | ppp_udp_pkt->cblock.result = 0; |
| 2583 | break; |
| 2584 | |
| 2585 | /* PPIPE_GET_IBA_DATA */ |
| 2586 | case PPIPE_GET_IBA_DATA: |
| 2587 | |
| 2588 | mbox->cmd.length = 0x09; |
| 2589 | |
| 2590 | sdla_peek(&card->hw, 0xF003, &ppp_udp_pkt->data, |
| 2591 | mbox->cmd.length); |
| 2592 | |
| 2593 | /* set the length of the data */ |
| 2594 | ppp_udp_pkt->cblock.length = 0x09; |
| 2595 | |
| 2596 | /* set return code */ |
| 2597 | ppp_udp_pkt->cblock.result = 0x00; |
| 2598 | ppp_udp_pkt->cblock.result = 0; |
| 2599 | break; |
| 2600 | |
| 2601 | /* PPIPE_FT1_READ_STATUS */ |
| 2602 | case PPIPE_FT1_READ_STATUS: |
| 2603 | sdla_peek(&card->hw, 0xF020, &ppp_udp_pkt->data[0], 2); |
| 2604 | ppp_udp_pkt->cblock.length = mbox->cmd.length = 2; |
| 2605 | ppp_udp_pkt->cblock.result = 0; |
| 2606 | break; |
| 2607 | |
| 2608 | case PPIPE_FLUSH_DRIVER_STATS: |
| 2609 | init_ppp_priv_struct( ppp_priv_area ); |
| 2610 | init_global_statistics( card ); |
| 2611 | mbox->cmd.length = 0; |
| 2612 | ppp_udp_pkt->cblock.result = 0; |
| 2613 | break; |
| 2614 | |
| 2615 | |
| 2616 | case PPIPE_ROUTER_UP_TIME: |
| 2617 | |
| 2618 | do_gettimeofday( &tv ); |
| 2619 | ppp_priv_area->router_up_time = tv.tv_sec - |
| 2620 | ppp_priv_area->router_start_time; |
| 2621 | *(unsigned long *)&ppp_udp_pkt->data = ppp_priv_area->router_up_time; |
| 2622 | mbox->cmd.length = 4; |
| 2623 | ppp_udp_pkt->cblock.result = 0; |
| 2624 | break; |
| 2625 | |
| 2626 | /* PPIPE_DRIVER_STATISTICS */ |
| 2627 | case PPIPE_DRIVER_STAT_IFSEND: |
| 2628 | memcpy(&ppp_udp_pkt->data, &ppp_priv_area->if_send_stat, |
| 2629 | sizeof(if_send_stat_t)); |
| 2630 | |
| 2631 | |
| 2632 | ppp_udp_pkt->cblock.result = 0; |
| 2633 | ppp_udp_pkt->cblock.length = sizeof(if_send_stat_t); |
| 2634 | mbox->cmd.length = sizeof(if_send_stat_t); |
| 2635 | break; |
| 2636 | |
| 2637 | case PPIPE_DRIVER_STAT_INTR: |
| 2638 | memcpy(&ppp_udp_pkt->data, &card->statistics, |
| 2639 | sizeof(global_stats_t)); |
| 2640 | |
| 2641 | memcpy(&ppp_udp_pkt->data+sizeof(global_stats_t), |
| 2642 | &ppp_priv_area->rx_intr_stat, |
| 2643 | sizeof(rx_intr_stat_t)); |
| 2644 | |
| 2645 | ppp_udp_pkt->cblock.result = 0; |
| 2646 | ppp_udp_pkt->cblock.length = sizeof(global_stats_t)+ |
| 2647 | sizeof(rx_intr_stat_t); |
| 2648 | mbox->cmd.length = ppp_udp_pkt->cblock.length; |
| 2649 | break; |
| 2650 | |
| 2651 | case PPIPE_DRIVER_STAT_GEN: |
| 2652 | memcpy( &ppp_udp_pkt->data, |
| 2653 | &ppp_priv_area->pipe_mgmt_stat, |
| 2654 | sizeof(pipe_mgmt_stat_t)); |
| 2655 | |
| 2656 | memcpy(&ppp_udp_pkt->data+sizeof(pipe_mgmt_stat_t), |
| 2657 | &card->statistics, sizeof(global_stats_t)); |
| 2658 | |
| 2659 | ppp_udp_pkt->cblock.result = 0; |
| 2660 | ppp_udp_pkt->cblock.length = sizeof(global_stats_t)+ |
| 2661 | sizeof(rx_intr_stat_t); |
| 2662 | mbox->cmd.length = ppp_udp_pkt->cblock.length; |
| 2663 | break; |
| 2664 | |
| 2665 | |
| 2666 | /* FT1 MONITOR STATUS */ |
| 2667 | case FT1_MONITOR_STATUS_CTRL: |
| 2668 | |
| 2669 | /* Enable FT1 MONITOR STATUS */ |
| 2670 | if( ppp_udp_pkt->data[0] == 1) { |
| 2671 | |
| 2672 | if( rCount++ != 0 ) { |
| 2673 | ppp_udp_pkt->cblock.result = 0; |
| 2674 | mbox->cmd.length = 1; |
| 2675 | break; |
| 2676 | } |
| 2677 | } |
| 2678 | |
| 2679 | /* Disable FT1 MONITOR STATUS */ |
| 2680 | if( ppp_udp_pkt->data[0] == 0) { |
| 2681 | |
| 2682 | if( --rCount != 0) { |
| 2683 | ppp_udp_pkt->cblock.result = 0; |
| 2684 | mbox->cmd.length = 1; |
| 2685 | break; |
| 2686 | } |
| 2687 | } |
| 2688 | goto udp_dflt_cmd; |
| 2689 | |
| 2690 | /* WARNING: FIXME: This should be fixed. |
| 2691 | * The FT1 Status Ctrl doesn't have a break |
| 2692 | * statment. Thus, no code must be inserted |
| 2693 | * HERE: between default and above case statement */ |
| 2694 | |
| 2695 | default: |
| 2696 | udp_dflt_cmd: |
| 2697 | |
| 2698 | /* it's a board command */ |
| 2699 | mbox->cmd.command = ppp_udp_pkt->cblock.command; |
| 2700 | mbox->cmd.length = ppp_udp_pkt->cblock.length; |
| 2701 | |
| 2702 | if(mbox->cmd.length) { |
| 2703 | memcpy(&mbox->data,(unsigned char *)ppp_udp_pkt->data, |
| 2704 | mbox->cmd.length); |
| 2705 | } |
| 2706 | |
| 2707 | /* run the command on the board */ |
| 2708 | err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT; |
| 2709 | |
| 2710 | if (err != CMD_OK) { |
| 2711 | |
| 2712 | ppp_error(card, err, mbox); |
| 2713 | ++ppp_priv_area->pipe_mgmt_stat. |
| 2714 | UDP_PIPE_mgmt_adptr_cmnd_timeout; |
| 2715 | break; |
| 2716 | } |
| 2717 | |
| 2718 | ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_adptr_cmnd_OK; |
| 2719 | |
| 2720 | /* copy the result back to our buffer */ |
| 2721 | memcpy(&ppp_udp_pkt->cblock,mbox, sizeof(cblock_t)); |
| 2722 | |
| 2723 | if(mbox->cmd.length) { |
| 2724 | memcpy(&ppp_udp_pkt->data,&mbox->data,mbox->cmd.length); |
| 2725 | } |
| 2726 | |
| 2727 | } /* end of switch */ |
| 2728 | } /* end of else */ |
| 2729 | |
| 2730 | /* Fill UDP TTL */ |
| 2731 | ppp_udp_pkt->ip_pkt.ttl = card->wandev.ttl; |
| 2732 | len = reply_udp(ppp_priv_area->udp_pkt_data, mbox->cmd.length); |
| 2733 | |
| 2734 | if (ppp_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) { |
| 2735 | |
| 2736 | /* Make sure we are not already sending */ |
| 2737 | if (!test_bit(SEND_CRIT,&card->wandev.critical)){ |
| 2738 | ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_passed_to_adptr; |
| 2739 | ppp_send(card,ppp_priv_area->udp_pkt_data,len,ppp_priv_area->protocol); |
| 2740 | } |
| 2741 | |
| 2742 | } else { |
| 2743 | |
| 2744 | /* Pass it up the stack |
| 2745 | Allocate socket buffer */ |
| 2746 | if ((new_skb = dev_alloc_skb(len)) != NULL) { |
| 2747 | |
| 2748 | /* copy data into new_skb */ |
| 2749 | |
| 2750 | buf = skb_put(new_skb, len); |
| 2751 | memcpy(buf,ppp_priv_area->udp_pkt_data, len); |
| 2752 | |
| 2753 | ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_passed_to_stack; |
| 2754 | |
| 2755 | /* Decapsulate packet and pass it up the protocol |
| 2756 | stack */ |
| 2757 | new_skb->protocol = htons(ETH_P_IP); |
| 2758 | new_skb->dev = dev; |
| 2759 | new_skb->mac.raw = new_skb->data; |
| 2760 | netif_rx(new_skb); |
| 2761 | dev->last_rx = jiffies; |
| 2762 | |
| 2763 | } else { |
| 2764 | |
| 2765 | ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_no_socket; |
| 2766 | printk(KERN_INFO "no socket buffers available!\n"); |
| 2767 | } |
| 2768 | } |
| 2769 | |
| 2770 | ppp_priv_area->udp_pkt_lgth = 0; |
| 2771 | |
| 2772 | return; |
| 2773 | } |
| 2774 | |
| 2775 | /*============================================================================= |
| 2776 | * Initial the ppp_private_area structure. |
| 2777 | */ |
| 2778 | static void init_ppp_priv_struct( ppp_private_area_t *ppp_priv_area ) |
| 2779 | { |
| 2780 | |
| 2781 | memset(&ppp_priv_area->if_send_stat, 0, sizeof(if_send_stat_t)); |
| 2782 | memset(&ppp_priv_area->rx_intr_stat, 0, sizeof(rx_intr_stat_t)); |
| 2783 | memset(&ppp_priv_area->pipe_mgmt_stat, 0, sizeof(pipe_mgmt_stat_t)); |
| 2784 | } |
| 2785 | |
| 2786 | /*============================================================================ |
| 2787 | * Initialize Global Statistics |
| 2788 | */ |
| 2789 | static void init_global_statistics( sdla_t *card ) |
| 2790 | { |
| 2791 | memset(&card->statistics, 0, sizeof(global_stats_t)); |
| 2792 | } |
| 2793 | |
| 2794 | /*============================================================================ |
| 2795 | * Initialize Receive and Transmit Buffers. |
| 2796 | */ |
| 2797 | static void init_ppp_tx_rx_buff( sdla_t *card ) |
| 2798 | { |
| 2799 | ppp508_buf_info_t* info; |
| 2800 | |
| 2801 | if (card->hw.type == SDLA_S514) { |
| 2802 | |
| 2803 | info = (void*)(card->hw.dpmbase + PPP514_BUF_OFFS); |
| 2804 | |
| 2805 | card->u.p.txbuf_base = (void*)(card->hw.dpmbase + |
| 2806 | info->txb_ptr); |
| 2807 | |
| 2808 | card->u.p.txbuf_last = (ppp_buf_ctl_t*)card->u.p.txbuf_base + |
| 2809 | (info->txb_num - 1); |
| 2810 | |
| 2811 | card->u.p.rxbuf_base = (void*)(card->hw.dpmbase + |
| 2812 | info->rxb_ptr); |
| 2813 | |
| 2814 | card->u.p.rxbuf_last = (ppp_buf_ctl_t*)card->u.p.rxbuf_base + |
| 2815 | (info->rxb_num - 1); |
| 2816 | |
| 2817 | } else { |
| 2818 | |
| 2819 | info = (void*)(card->hw.dpmbase + PPP508_BUF_OFFS); |
| 2820 | |
| 2821 | card->u.p.txbuf_base = (void*)(card->hw.dpmbase + |
| 2822 | (info->txb_ptr - PPP508_MB_VECT)); |
| 2823 | |
| 2824 | card->u.p.txbuf_last = (ppp_buf_ctl_t*)card->u.p.txbuf_base + |
| 2825 | (info->txb_num - 1); |
| 2826 | |
| 2827 | card->u.p.rxbuf_base = (void*)(card->hw.dpmbase + |
| 2828 | (info->rxb_ptr - PPP508_MB_VECT)); |
| 2829 | |
| 2830 | card->u.p.rxbuf_last = (ppp_buf_ctl_t*)card->u.p.rxbuf_base + |
| 2831 | (info->rxb_num - 1); |
| 2832 | } |
| 2833 | |
| 2834 | card->u.p.txbuf_next = (unsigned long*)&info->txb_nxt; |
| 2835 | card->u.p.rxbuf_next = (unsigned long*)&info->rxb1_ptr; |
| 2836 | |
| 2837 | card->u.p.rx_base = info->rxb_base; |
| 2838 | card->u.p.rx_top = info->rxb_end; |
| 2839 | |
| 2840 | card->u.p.txbuf = card->u.p.txbuf_base; |
| 2841 | card->rxmb = card->u.p.rxbuf_base; |
| 2842 | |
| 2843 | } |
| 2844 | |
| 2845 | /*============================================================================= |
| 2846 | * Read Connection Information (ie for Remote IP address assginment). |
| 2847 | * Called when ppp interface connected. |
| 2848 | */ |
| 2849 | static int read_info( sdla_t *card ) |
| 2850 | { |
| 2851 | struct net_device *dev = card->wandev.dev; |
| 2852 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 2853 | int err; |
| 2854 | |
| 2855 | struct ifreq if_info; |
| 2856 | struct sockaddr_in *if_data1, *if_data2; |
| 2857 | mm_segment_t fs; |
| 2858 | |
| 2859 | /* Set Local and remote addresses */ |
| 2860 | memset(&if_info, 0, sizeof(if_info)); |
| 2861 | strcpy(if_info.ifr_name, dev->name); |
| 2862 | |
| 2863 | |
| 2864 | fs = get_fs(); |
| 2865 | set_fs(get_ds()); /* get user space block */ |
| 2866 | |
| 2867 | /* Change the local and remote ip address of the interface. |
| 2868 | * This will also add in the destination route. |
| 2869 | */ |
| 2870 | if_data1 = (struct sockaddr_in *)&if_info.ifr_addr; |
| 2871 | if_data1->sin_addr.s_addr = ppp_priv_area->ip_local; |
| 2872 | if_data1->sin_family = AF_INET; |
| 2873 | err = devinet_ioctl( SIOCSIFADDR, &if_info ); |
| 2874 | if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr; |
| 2875 | if_data2->sin_addr.s_addr = ppp_priv_area->ip_remote; |
| 2876 | if_data2->sin_family = AF_INET; |
| 2877 | err = devinet_ioctl( SIOCSIFDSTADDR, &if_info ); |
| 2878 | |
| 2879 | set_fs(fs); /* restore old block */ |
| 2880 | |
| 2881 | if (err) { |
| 2882 | printk (KERN_INFO "%s: Adding of route failed: %i\n", |
| 2883 | card->devname,err); |
| 2884 | printk (KERN_INFO "%s: Local : %u.%u.%u.%u\n", |
| 2885 | card->devname,NIPQUAD(ppp_priv_area->ip_local)); |
| 2886 | printk (KERN_INFO "%s: Remote: %u.%u.%u.%u\n", |
| 2887 | card->devname,NIPQUAD(ppp_priv_area->ip_remote)); |
| 2888 | } |
| 2889 | return err; |
| 2890 | } |
| 2891 | |
| 2892 | /*============================================================================= |
| 2893 | * Remove Dynamic Route. |
| 2894 | * Called when ppp interface disconnected. |
| 2895 | */ |
| 2896 | |
| 2897 | static void remove_route( sdla_t *card ) |
| 2898 | { |
| 2899 | |
| 2900 | struct net_device *dev = card->wandev.dev; |
| 2901 | long ip_addr; |
| 2902 | int err; |
| 2903 | |
| 2904 | mm_segment_t fs; |
| 2905 | struct ifreq if_info; |
| 2906 | struct sockaddr_in *if_data1; |
| 2907 | struct in_device *in_dev = dev->ip_ptr; |
| 2908 | struct in_ifaddr *ifa = in_dev->ifa_list; |
| 2909 | |
| 2910 | ip_addr = ifa->ifa_local; |
| 2911 | |
| 2912 | /* Set Local and remote addresses */ |
| 2913 | memset(&if_info, 0, sizeof(if_info)); |
| 2914 | strcpy(if_info.ifr_name, dev->name); |
| 2915 | |
| 2916 | fs = get_fs(); |
| 2917 | set_fs(get_ds()); /* get user space block */ |
| 2918 | |
| 2919 | /* Change the local ip address of the interface to 0. |
| 2920 | * This will also delete the destination route. |
| 2921 | */ |
| 2922 | if_data1 = (struct sockaddr_in *)&if_info.ifr_addr; |
| 2923 | if_data1->sin_addr.s_addr = 0; |
| 2924 | if_data1->sin_family = AF_INET; |
| 2925 | err = devinet_ioctl( SIOCSIFADDR, &if_info ); |
| 2926 | |
| 2927 | set_fs(fs); /* restore old block */ |
| 2928 | |
| 2929 | |
| 2930 | if (err) { |
| 2931 | printk (KERN_INFO "%s: Deleting dynamic route failed %d!\n", |
| 2932 | card->devname, err); |
| 2933 | return; |
| 2934 | }else{ |
| 2935 | printk (KERN_INFO "%s: PPP Deleting dynamic route %u.%u.%u.%u successfuly\n", |
| 2936 | card->devname, NIPQUAD(ip_addr)); |
| 2937 | } |
| 2938 | return; |
| 2939 | } |
| 2940 | |
| 2941 | /*============================================================================= |
| 2942 | * Perform the Interrupt Test by running the READ_CODE_VERSION command MAX_INTR |
| 2943 | * _TEST_COUNTER times. |
| 2944 | */ |
| 2945 | static int intr_test( sdla_t *card ) |
| 2946 | { |
| 2947 | ppp_mbox_t *mb = card->mbox; |
| 2948 | int err,i; |
| 2949 | |
| 2950 | err = ppp_set_intr_mode( card, 0x08 ); |
| 2951 | |
| 2952 | if (err == CMD_OK) { |
| 2953 | |
| 2954 | for (i = 0; i < MAX_INTR_TEST_COUNTER; i ++) { |
| 2955 | /* Run command READ_CODE_VERSION */ |
| 2956 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 2957 | mb->cmd.length = 0; |
| 2958 | mb->cmd.command = PPP_READ_CODE_VERSION; |
| 2959 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 2960 | if (err != CMD_OK) |
| 2961 | ppp_error(card, err, mb); |
| 2962 | } |
| 2963 | } |
| 2964 | else return err; |
| 2965 | |
| 2966 | err = ppp_set_intr_mode( card, 0 ); |
| 2967 | if (err != CMD_OK) |
| 2968 | return err; |
| 2969 | |
| 2970 | return 0; |
| 2971 | } |
| 2972 | |
| 2973 | /*============================================================================== |
| 2974 | * Determine what type of UDP call it is. DRVSTATS or PTPIPEAB ? |
| 2975 | */ |
| 2976 | static int udp_pkt_type( struct sk_buff *skb, sdla_t *card ) |
| 2977 | { |
| 2978 | unsigned char *sendpacket; |
| 2979 | unsigned char buf2[5]; |
| 2980 | ppp_udp_pkt_t *ppp_udp_pkt = (ppp_udp_pkt_t *)skb->data; |
| 2981 | |
| 2982 | sendpacket = skb->data; |
| 2983 | memcpy(&buf2, &card->wandev.udp_port, 2); |
| 2984 | |
| 2985 | if( ppp_udp_pkt->ip_pkt.ver_inet_hdr_length == 0x45 && /* IP packet */ |
| 2986 | sendpacket[9] == 0x11 && /* UDP packet */ |
| 2987 | sendpacket[22] == buf2[1] && /* UDP Port */ |
| 2988 | sendpacket[23] == buf2[0] && |
| 2989 | sendpacket[36] == 0x01 ) { |
| 2990 | |
| 2991 | if ( sendpacket[28] == 0x50 && /* PTPIPEAB: Signature */ |
| 2992 | sendpacket[29] == 0x54 && |
| 2993 | sendpacket[30] == 0x50 && |
| 2994 | sendpacket[31] == 0x49 && |
| 2995 | sendpacket[32] == 0x50 && |
| 2996 | sendpacket[33] == 0x45 && |
| 2997 | sendpacket[34] == 0x41 && |
| 2998 | sendpacket[35] == 0x42 ){ |
| 2999 | |
| 3000 | return UDP_PTPIPE_TYPE; |
| 3001 | |
| 3002 | } else if(sendpacket[28] == 0x44 && /* DRVSTATS: Signature */ |
| 3003 | sendpacket[29] == 0x52 && |
| 3004 | sendpacket[30] == 0x56 && |
| 3005 | sendpacket[31] == 0x53 && |
| 3006 | sendpacket[32] == 0x54 && |
| 3007 | sendpacket[33] == 0x41 && |
| 3008 | sendpacket[34] == 0x54 && |
| 3009 | sendpacket[35] == 0x53 ){ |
| 3010 | |
| 3011 | return UDP_DRVSTATS_TYPE; |
| 3012 | |
| 3013 | } else |
| 3014 | return UDP_INVALID_TYPE; |
| 3015 | |
| 3016 | } else |
| 3017 | return UDP_INVALID_TYPE; |
| 3018 | |
| 3019 | } |
| 3020 | |
| 3021 | /*============================================================================ |
| 3022 | * Check to see if the packet to be transmitted contains a broadcast or |
| 3023 | * multicast source IP address. |
| 3024 | */ |
| 3025 | |
| 3026 | static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev, |
| 3027 | struct sk_buff *skb) |
| 3028 | { |
| 3029 | u32 src_ip_addr; |
| 3030 | u32 broadcast_ip_addr = 0; |
| 3031 | struct in_device *in_dev; |
| 3032 | |
| 3033 | /* read the IP source address from the outgoing packet */ |
| 3034 | src_ip_addr = *(u32 *)(skb->data + 12); |
| 3035 | |
| 3036 | /* read the IP broadcast address for the device */ |
| 3037 | in_dev = dev->ip_ptr; |
| 3038 | if(in_dev != NULL) { |
| 3039 | struct in_ifaddr *ifa= in_dev->ifa_list; |
| 3040 | if(ifa != NULL) |
| 3041 | broadcast_ip_addr = ifa->ifa_broadcast; |
| 3042 | else |
| 3043 | return 0; |
| 3044 | } |
| 3045 | |
| 3046 | /* check if the IP Source Address is a Broadcast address */ |
| 3047 | if((dev->flags & IFF_BROADCAST) && (src_ip_addr == broadcast_ip_addr)) { |
| 3048 | printk(KERN_INFO "%s: Broadcast Source Address silently discarded\n", |
| 3049 | card->devname); |
| 3050 | return 1; |
| 3051 | } |
| 3052 | |
| 3053 | /* check if the IP Source Address is a Multicast address */ |
| 3054 | if((ntohl(src_ip_addr) >= 0xE0000001) && |
| 3055 | (ntohl(src_ip_addr) <= 0xFFFFFFFE)) { |
| 3056 | printk(KERN_INFO "%s: Multicast Source Address silently discarded\n", |
| 3057 | card->devname); |
| 3058 | return 1; |
| 3059 | } |
| 3060 | |
| 3061 | return 0; |
| 3062 | } |
| 3063 | |
| 3064 | void s508_lock (sdla_t *card, unsigned long *smp_flags) |
| 3065 | { |
| 3066 | spin_lock_irqsave(&card->wandev.lock, *smp_flags); |
| 3067 | } |
| 3068 | |
| 3069 | void s508_unlock (sdla_t *card, unsigned long *smp_flags) |
| 3070 | { |
| 3071 | spin_unlock_irqrestore(&card->wandev.lock, *smp_flags); |
| 3072 | } |
| 3073 | |
| 3074 | static int read_connection_info (sdla_t *card) |
| 3075 | { |
| 3076 | ppp_mbox_t *mb = card->mbox; |
| 3077 | struct net_device *dev = card->wandev.dev; |
| 3078 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 3079 | ppp508_connect_info_t *ppp508_connect_info; |
| 3080 | int err; |
| 3081 | |
| 3082 | memset(&mb->cmd, 0, sizeof(ppp_cmd_t)); |
| 3083 | mb->cmd.length = 0; |
| 3084 | mb->cmd.command = PPP_GET_CONNECTION_INFO; |
| 3085 | err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT; |
| 3086 | |
| 3087 | if (err != CMD_OK) { |
| 3088 | ppp_error(card, err, mb); |
| 3089 | ppp_priv_area->ip_remote = 0; |
| 3090 | ppp_priv_area->ip_local = 0; |
| 3091 | } |
| 3092 | else { |
| 3093 | ppp508_connect_info = (ppp508_connect_info_t *)mb->data; |
| 3094 | ppp_priv_area->ip_remote = ppp508_connect_info->ip_remote; |
| 3095 | ppp_priv_area->ip_local = ppp508_connect_info->ip_local; |
| 3096 | |
| 3097 | NEX_PRINTK(KERN_INFO "READ CONNECTION GOT IP ADDRESS %x, %x\n", |
| 3098 | ppp_priv_area->ip_remote, |
| 3099 | ppp_priv_area->ip_local); |
| 3100 | } |
| 3101 | |
| 3102 | return err; |
| 3103 | } |
| 3104 | |
| 3105 | /*=============================================================================== |
| 3106 | * config_ppp |
| 3107 | * |
| 3108 | * Configure the ppp protocol and enable communications. |
| 3109 | * |
| 3110 | * The if_open function binds this function to the poll routine. |
| 3111 | * Therefore, this function will run every time the ppp interface |
| 3112 | * is brought up. |
| 3113 | * |
| 3114 | * If the communications are not enabled, proceed to configure |
| 3115 | * the card and enable communications. |
| 3116 | * |
| 3117 | * If the communications are enabled, it means that the interface |
| 3118 | * was shutdown by ether the user or driver. In this case, we |
| 3119 | * have to check that the IP addresses have not changed. If |
| 3120 | * the IP addresses changed, we have to reconfigure the firmware |
| 3121 | * and update the changed IP addresses. Otherwise, just exit. |
| 3122 | */ |
| 3123 | static int config_ppp (sdla_t *card) |
| 3124 | { |
| 3125 | |
| 3126 | struct net_device *dev = card->wandev.dev; |
| 3127 | ppp_flags_t *flags = card->flags; |
| 3128 | ppp_private_area_t *ppp_priv_area = dev->priv; |
| 3129 | |
| 3130 | if (card->u.p.comm_enabled){ |
| 3131 | |
| 3132 | if (ppp_priv_area->ip_local_tmp != ppp_priv_area->ip_local || |
| 3133 | ppp_priv_area->ip_remote_tmp != ppp_priv_area->ip_remote){ |
| 3134 | |
| 3135 | /* The IP addersses have changed, we must |
| 3136 | * stop the communications and reconfigure |
| 3137 | * the card. Reason: the firmware must know |
| 3138 | * the local and remote IP addresses. */ |
| 3139 | disable_comm(card); |
| 3140 | wanpipe_set_state(card, WAN_DISCONNECTED); |
| 3141 | printk(KERN_INFO |
| 3142 | "%s: IP addresses changed!\n", |
| 3143 | card->devname); |
| 3144 | printk(KERN_INFO "%s: Restarting communications ...\n", |
| 3145 | card->devname); |
| 3146 | }else{ |
| 3147 | /* IP addresses are the same and the link is up, |
| 3148 | * we don't have to do anything here. Therefore, exit */ |
| 3149 | return 0; |
| 3150 | } |
| 3151 | } |
| 3152 | |
| 3153 | /* Record the new IP addreses */ |
| 3154 | ppp_priv_area->ip_local = ppp_priv_area->ip_local_tmp; |
| 3155 | ppp_priv_area->ip_remote = ppp_priv_area->ip_remote_tmp; |
| 3156 | |
| 3157 | if (config508(dev, card)){ |
| 3158 | printk(KERN_INFO "%s: Failed to configure PPP device\n", |
| 3159 | card->devname); |
| 3160 | return 0; |
| 3161 | } |
| 3162 | |
| 3163 | if (ppp_set_intr_mode(card, PPP_INTR_RXRDY| |
| 3164 | PPP_INTR_TXRDY| |
| 3165 | PPP_INTR_MODEM| |
| 3166 | PPP_INTR_DISC | |
| 3167 | PPP_INTR_OPEN | |
| 3168 | PPP_INTR_DROP_DTR | |
| 3169 | PPP_INTR_TIMER)) { |
| 3170 | |
| 3171 | printk(KERN_INFO "%s: Failed to configure board interrupts !\n", |
| 3172 | card->devname); |
| 3173 | return 0; |
| 3174 | } |
| 3175 | |
| 3176 | /* Turn off the transmit and timer interrupt */ |
| 3177 | flags->imask &= ~(PPP_INTR_TXRDY | PPP_INTR_TIMER) ; |
| 3178 | |
| 3179 | |
| 3180 | /* If you are not the authenticator and any one of the protocol is |
| 3181 | * enabled then we call the set_out_bound_authentication. |
| 3182 | */ |
| 3183 | if ( !card->u.p.authenticator && (ppp_priv_area->pap || ppp_priv_area->chap)) { |
| 3184 | if ( ppp_set_outbnd_auth(card, ppp_priv_area) ){ |
| 3185 | printk(KERN_INFO "%s: Outbound authentication failed !\n", |
| 3186 | card->devname); |
| 3187 | return 0; |
| 3188 | } |
| 3189 | } |
| 3190 | |
| 3191 | /* If you are the authenticator and any one of the protocol is enabled |
| 3192 | * then we call the set_in_bound_authentication. |
| 3193 | */ |
| 3194 | if (card->u.p.authenticator && (ppp_priv_area->pap || ppp_priv_area->chap)){ |
| 3195 | if (ppp_set_inbnd_auth(card, ppp_priv_area)){ |
| 3196 | printk(KERN_INFO "%s: Inbound authentication failed !\n", |
| 3197 | card->devname); |
| 3198 | return 0; |
| 3199 | } |
| 3200 | } |
| 3201 | |
| 3202 | /* If we fail to enable communications here it's OK, |
| 3203 | * since the DTR timer will cause a disconnected, which |
| 3204 | * will retrigger communication in timer_intr() */ |
| 3205 | if (ppp_comm_enable(card) == CMD_OK) { |
| 3206 | wanpipe_set_state(card, WAN_CONNECTING); |
| 3207 | init_ppp_tx_rx_buff(card); |
| 3208 | } |
| 3209 | |
| 3210 | return 0; |
| 3211 | } |
| 3212 | |
| 3213 | /*============================================================ |
| 3214 | * ppp_poll |
| 3215 | * |
| 3216 | * Rationale: |
| 3217 | * We cannot manipulate the routing tables, or |
| 3218 | * ip addresses withing the interrupt. Therefore |
| 3219 | * we must perform such actons outside an interrupt |
| 3220 | * at a later time. |
| 3221 | * |
| 3222 | * Description: |
| 3223 | * PPP polling routine, responsible for |
| 3224 | * shutting down interfaces upon disconnect |
| 3225 | * and adding/removing routes. |
| 3226 | * |
| 3227 | * Usage: |
| 3228 | * This function is executed for each ppp |
| 3229 | * interface through a tq_schedule bottom half. |
| 3230 | * |
| 3231 | * trigger_ppp_poll() function is used to kick |
| 3232 | * the ppp_poll routine. |
| 3233 | */ |
| 3234 | static void ppp_poll(struct net_device *dev) |
| 3235 | { |
| 3236 | ppp_private_area_t *ppp_priv_area; |
| 3237 | sdla_t *card; |
| 3238 | u8 check_gateway=0; |
| 3239 | ppp_flags_t *flags; |
| 3240 | |
| 3241 | if (!dev || (ppp_priv_area = dev->priv) == NULL) |
| 3242 | return; |
| 3243 | |
| 3244 | card = ppp_priv_area->card; |
| 3245 | flags = card->flags; |
| 3246 | |
| 3247 | /* Shutdown is in progress, stop what you are |
| 3248 | * doing and get out */ |
| 3249 | if (test_bit(PERI_CRIT,&card->wandev.critical)){ |
| 3250 | clear_bit(POLL_CRIT,&card->wandev.critical); |
| 3251 | return; |
| 3252 | } |
| 3253 | |
| 3254 | /* if_open() function has triggered the polling routine |
| 3255 | * to determine the configured IP addresses. Once the |
| 3256 | * addresses are found, trigger the chdlc configuration */ |
| 3257 | if (test_bit(0,&ppp_priv_area->config_ppp)){ |
| 3258 | |
| 3259 | ppp_priv_area->ip_local_tmp = get_ip_address(dev,WAN_LOCAL_IP); |
| 3260 | ppp_priv_area->ip_remote_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP); |
| 3261 | |
| 3262 | if (ppp_priv_area->ip_local_tmp == ppp_priv_area->ip_remote_tmp && |
| 3263 | card->u.p.ip_mode == WANOPT_PPP_HOST){ |
| 3264 | |
| 3265 | if (++ppp_priv_area->ip_error > MAX_IP_ERRORS){ |
| 3266 | printk(KERN_INFO "\n%s: --- WARNING ---\n", |
| 3267 | card->devname); |
| 3268 | printk(KERN_INFO "%s: The local IP address is the same as the\n", |
| 3269 | card->devname); |
| 3270 | printk(KERN_INFO "%s: Point-to-Point IP address.\n", |
| 3271 | card->devname); |
| 3272 | printk(KERN_INFO "%s: --- WARNING ---\n\n", |
| 3273 | card->devname); |
| 3274 | }else{ |
| 3275 | clear_bit(POLL_CRIT,&card->wandev.critical); |
| 3276 | ppp_priv_area->poll_delay_timer.expires = jiffies+HZ; |
| 3277 | add_timer(&ppp_priv_area->poll_delay_timer); |
| 3278 | return; |
| 3279 | } |
| 3280 | } |
| 3281 | |
| 3282 | ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_CONFIG; |
| 3283 | flags->imask |= PPP_INTR_TIMER; |
| 3284 | ppp_priv_area->ip_error=0; |
| 3285 | |
| 3286 | clear_bit(0,&ppp_priv_area->config_ppp); |
| 3287 | clear_bit(POLL_CRIT,&card->wandev.critical); |
| 3288 | return; |
| 3289 | } |
| 3290 | |
| 3291 | /* Dynamic interface implementation, as well as dynamic |
| 3292 | * routing. */ |
| 3293 | |
| 3294 | switch (card->wandev.state) { |
| 3295 | |
| 3296 | case WAN_DISCONNECTED: |
| 3297 | |
| 3298 | /* If the dynamic interface configuration is on, and interface |
| 3299 | * is up, then bring down the netowrk interface */ |
| 3300 | |
| 3301 | if (test_bit(DYN_OPT_ON,&ppp_priv_area->interface_down) && |
| 3302 | !test_bit(DEV_DOWN,&ppp_priv_area->interface_down) && |
| 3303 | card->wandev.dev->flags & IFF_UP){ |
| 3304 | |
| 3305 | printk(KERN_INFO "%s: Interface %s down.\n", |
| 3306 | card->devname,card->wandev.dev->name); |
| 3307 | change_dev_flags(card->wandev.dev, |
| 3308 | (card->wandev.dev->flags&~IFF_UP)); |
| 3309 | set_bit(DEV_DOWN,&ppp_priv_area->interface_down); |
| 3310 | }else{ |
| 3311 | /* We need to check if the local IP address is |
| 3312 | * zero. If it is, we shouldn't try to remove it. |
| 3313 | * For some reason the kernel crashes badly if |
| 3314 | * we try to remove the route twice */ |
| 3315 | |
| 3316 | if (card->wandev.dev->flags & IFF_UP && |
| 3317 | get_ip_address(card->wandev.dev,WAN_LOCAL_IP) && |
| 3318 | card->u.p.ip_mode == WANOPT_PPP_PEER){ |
| 3319 | |
| 3320 | remove_route(card); |
| 3321 | } |
| 3322 | } |
| 3323 | break; |
| 3324 | |
| 3325 | case WAN_CONNECTED: |
| 3326 | |
| 3327 | /* In SMP machine this code can execute before the interface |
| 3328 | * comes up. In this case, we must make sure that we do not |
| 3329 | * try to bring up the interface before dev_open() is finished */ |
| 3330 | |
| 3331 | |
| 3332 | /* DEV_DOWN will be set only when we bring down the interface |
| 3333 | * for the very first time. This way we know that it was us |
| 3334 | * that brought the interface down */ |
| 3335 | |
| 3336 | if (test_bit(DYN_OPT_ON,&ppp_priv_area->interface_down) && |
| 3337 | test_bit(DEV_DOWN, &ppp_priv_area->interface_down) && |
| 3338 | !(card->wandev.dev->flags & IFF_UP)){ |
| 3339 | |
| 3340 | printk(KERN_INFO "%s: Interface %s up.\n", |
| 3341 | card->devname,card->wandev.dev->name); |
| 3342 | |
| 3343 | change_dev_flags(card->wandev.dev,(card->wandev.dev->flags|IFF_UP)); |
| 3344 | clear_bit(DEV_DOWN,&ppp_priv_area->interface_down); |
| 3345 | check_gateway=1; |
| 3346 | } |
| 3347 | |
| 3348 | if ((card->u.p.ip_mode == WANOPT_PPP_PEER) && |
| 3349 | test_bit(1,&Read_connection_info)) { |
| 3350 | |
| 3351 | process_route(card); |
| 3352 | clear_bit(1,&Read_connection_info); |
| 3353 | check_gateway=1; |
| 3354 | } |
| 3355 | |
| 3356 | if (ppp_priv_area->gateway && check_gateway) |
| 3357 | add_gateway(card,dev); |
| 3358 | |
| 3359 | break; |
| 3360 | } |
| 3361 | clear_bit(POLL_CRIT,&card->wandev.critical); |
| 3362 | return; |
| 3363 | } |
| 3364 | |
| 3365 | /*============================================================ |
| 3366 | * trigger_ppp_poll |
| 3367 | * |
| 3368 | * Description: |
| 3369 | * Add a ppp_poll() task into a tq_scheduler bh handler |
| 3370 | * for a specific interface. This will kick |
| 3371 | * the ppp_poll() routine at a later time. |
| 3372 | * |
| 3373 | * Usage: |
| 3374 | * Interrupts use this to defer a taks to |
| 3375 | * a polling routine. |
| 3376 | * |
| 3377 | */ |
| 3378 | |
| 3379 | static void trigger_ppp_poll(struct net_device *dev) |
| 3380 | { |
| 3381 | ppp_private_area_t *ppp_priv_area; |
| 3382 | if ((ppp_priv_area=dev->priv) != NULL){ |
| 3383 | |
| 3384 | sdla_t *card = ppp_priv_area->card; |
| 3385 | |
| 3386 | if (test_bit(PERI_CRIT,&card->wandev.critical)){ |
| 3387 | return; |
| 3388 | } |
| 3389 | |
| 3390 | if (test_and_set_bit(POLL_CRIT,&card->wandev.critical)){ |
| 3391 | return; |
| 3392 | } |
| 3393 | |
| 3394 | schedule_work(&ppp_priv_area->poll_work); |
| 3395 | } |
| 3396 | return; |
| 3397 | } |
| 3398 | |
| 3399 | static void ppp_poll_delay (unsigned long dev_ptr) |
| 3400 | { |
| 3401 | struct net_device *dev = (struct net_device *)dev_ptr; |
| 3402 | trigger_ppp_poll(dev); |
| 3403 | } |
| 3404 | |
| 3405 | /*============================================================ |
| 3406 | * detect_and_fix_tx_bug |
| 3407 | * |
| 3408 | * Description: |
| 3409 | * On connect, if the board tx buffer ptr is not the same |
| 3410 | * as the driver tx buffer ptr, we found a firmware bug. |
| 3411 | * Report the bug to the above layer. To fix the |
| 3412 | * error restart communications again. |
| 3413 | * |
| 3414 | * Usage: |
| 3415 | * |
| 3416 | */ |
| 3417 | |
| 3418 | static int detect_and_fix_tx_bug (sdla_t *card) |
| 3419 | { |
| 3420 | if (((unsigned long)card->u.p.txbuf_base&0xFFF) != ((*card->u.p.txbuf_next)&0xFFF)){ |
| 3421 | NEX_PRINTK(KERN_INFO "Major Error, Fix the bug\n"); |
| 3422 | return 1; |
| 3423 | } |
| 3424 | return 0; |
| 3425 | } |
| 3426 | |
| 3427 | MODULE_LICENSE("GPL"); |
| 3428 | |
| 3429 | /****** End *****************************************************************/ |