Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * IUCV network driver |
| 3 | * |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 4 | * Copyright 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com) |
| 6 | * |
Cornelia Huck | 4ce3b30 | 2006-01-14 13:21:04 -0800 | [diff] [blame] | 7 | * Sysfs integration and all bugs therein by Cornelia Huck |
| 8 | * (cornelia.huck@de.ibm.com) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * |
| 10 | * Documentation used: |
| 11 | * the source of the original IUCV driver by: |
| 12 | * Stefan Hegewald <hegewald@de.ibm.com> |
| 13 | * Hartmut Penner <hpenner@de.ibm.com> |
| 14 | * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) |
| 15 | * Martin Schwidefsky (schwidefsky@de.ibm.com) |
| 16 | * Alan Altmark (Alan_Altmark@us.ibm.com) Sept. 2000 |
| 17 | * |
| 18 | * This program is free software; you can redistribute it and/or modify |
| 19 | * it under the terms of the GNU General Public License as published by |
| 20 | * the Free Software Foundation; either version 2, or (at your option) |
| 21 | * any later version. |
| 22 | * |
| 23 | * This program is distributed in the hope that it will be useful, |
| 24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 26 | * GNU General Public License for more details. |
| 27 | * |
| 28 | * You should have received a copy of the GNU General Public License |
| 29 | * along with this program; if not, write to the Free Software |
| 30 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 31 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | */ |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #undef DEBUG |
| 35 | |
| 36 | #include <linux/module.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/kernel.h> |
| 39 | #include <linux/slab.h> |
| 40 | #include <linux/errno.h> |
| 41 | #include <linux/types.h> |
| 42 | #include <linux/interrupt.h> |
| 43 | #include <linux/timer.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/bitops.h> |
| 45 | |
| 46 | #include <linux/signal.h> |
| 47 | #include <linux/string.h> |
| 48 | #include <linux/device.h> |
| 49 | |
| 50 | #include <linux/ip.h> |
| 51 | #include <linux/if_arp.h> |
| 52 | #include <linux/tcp.h> |
| 53 | #include <linux/skbuff.h> |
| 54 | #include <linux/ctype.h> |
| 55 | #include <net/dst.h> |
| 56 | |
| 57 | #include <asm/io.h> |
| 58 | #include <asm/uaccess.h> |
| 59 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 60 | #include <net/iucv/iucv.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include "fsm.h" |
| 62 | |
| 63 | MODULE_AUTHOR |
| 64 | ("(C) 2001 IBM Corporation by Fritz Elfert (felfert@millenux.com)"); |
| 65 | MODULE_DESCRIPTION ("Linux for S/390 IUCV network driver"); |
| 66 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 67 | /** |
| 68 | * Debug Facility stuff |
| 69 | */ |
| 70 | #define IUCV_DBF_SETUP_NAME "iucv_setup" |
| 71 | #define IUCV_DBF_SETUP_LEN 32 |
| 72 | #define IUCV_DBF_SETUP_PAGES 2 |
| 73 | #define IUCV_DBF_SETUP_NR_AREAS 1 |
| 74 | #define IUCV_DBF_SETUP_LEVEL 3 |
| 75 | |
| 76 | #define IUCV_DBF_DATA_NAME "iucv_data" |
| 77 | #define IUCV_DBF_DATA_LEN 128 |
| 78 | #define IUCV_DBF_DATA_PAGES 2 |
| 79 | #define IUCV_DBF_DATA_NR_AREAS 1 |
| 80 | #define IUCV_DBF_DATA_LEVEL 2 |
| 81 | |
| 82 | #define IUCV_DBF_TRACE_NAME "iucv_trace" |
| 83 | #define IUCV_DBF_TRACE_LEN 16 |
| 84 | #define IUCV_DBF_TRACE_PAGES 4 |
| 85 | #define IUCV_DBF_TRACE_NR_AREAS 1 |
| 86 | #define IUCV_DBF_TRACE_LEVEL 3 |
| 87 | |
| 88 | #define IUCV_DBF_TEXT(name,level,text) \ |
| 89 | do { \ |
| 90 | debug_text_event(iucv_dbf_##name,level,text); \ |
| 91 | } while (0) |
| 92 | |
| 93 | #define IUCV_DBF_HEX(name,level,addr,len) \ |
| 94 | do { \ |
| 95 | debug_event(iucv_dbf_##name,level,(void*)(addr),len); \ |
| 96 | } while (0) |
| 97 | |
| 98 | DECLARE_PER_CPU(char[256], iucv_dbf_txt_buf); |
| 99 | |
| 100 | #define IUCV_DBF_TEXT_(name,level,text...) \ |
| 101 | do { \ |
| 102 | char* iucv_dbf_txt_buf = get_cpu_var(iucv_dbf_txt_buf); \ |
| 103 | sprintf(iucv_dbf_txt_buf, text); \ |
| 104 | debug_text_event(iucv_dbf_##name,level,iucv_dbf_txt_buf); \ |
| 105 | put_cpu_var(iucv_dbf_txt_buf); \ |
| 106 | } while (0) |
| 107 | |
| 108 | #define IUCV_DBF_SPRINTF(name,level,text...) \ |
| 109 | do { \ |
| 110 | debug_sprintf_event(iucv_dbf_trace, level, ##text ); \ |
| 111 | debug_sprintf_event(iucv_dbf_trace, level, text ); \ |
| 112 | } while (0) |
| 113 | |
| 114 | /** |
| 115 | * some more debug stuff |
| 116 | */ |
| 117 | #define IUCV_HEXDUMP16(importance,header,ptr) \ |
| 118 | PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \ |
| 119 | "%02x %02x %02x %02x %02x %02x %02x %02x\n", \ |
| 120 | *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \ |
| 121 | *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \ |
| 122 | *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \ |
| 123 | *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \ |
| 124 | *(((char*)ptr)+12),*(((char*)ptr)+13), \ |
| 125 | *(((char*)ptr)+14),*(((char*)ptr)+15)); \ |
| 126 | PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \ |
| 127 | "%02x %02x %02x %02x %02x %02x %02x %02x\n", \ |
| 128 | *(((char*)ptr)+16),*(((char*)ptr)+17), \ |
| 129 | *(((char*)ptr)+18),*(((char*)ptr)+19), \ |
| 130 | *(((char*)ptr)+20),*(((char*)ptr)+21), \ |
| 131 | *(((char*)ptr)+22),*(((char*)ptr)+23), \ |
| 132 | *(((char*)ptr)+24),*(((char*)ptr)+25), \ |
| 133 | *(((char*)ptr)+26),*(((char*)ptr)+27), \ |
| 134 | *(((char*)ptr)+28),*(((char*)ptr)+29), \ |
| 135 | *(((char*)ptr)+30),*(((char*)ptr)+31)); |
| 136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | #define PRINTK_HEADER " iucv: " /* for debugging */ |
| 138 | |
| 139 | static struct device_driver netiucv_driver = { |
| 140 | .name = "netiucv", |
| 141 | .bus = &iucv_bus, |
| 142 | }; |
| 143 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 144 | static int netiucv_callback_connreq(struct iucv_path *, |
| 145 | u8 ipvmid[8], u8 ipuser[16]); |
| 146 | static void netiucv_callback_connack(struct iucv_path *, u8 ipuser[16]); |
| 147 | static void netiucv_callback_connrej(struct iucv_path *, u8 ipuser[16]); |
| 148 | static void netiucv_callback_connsusp(struct iucv_path *, u8 ipuser[16]); |
| 149 | static void netiucv_callback_connres(struct iucv_path *, u8 ipuser[16]); |
| 150 | static void netiucv_callback_rx(struct iucv_path *, struct iucv_message *); |
| 151 | static void netiucv_callback_txdone(struct iucv_path *, struct iucv_message *); |
| 152 | |
| 153 | static struct iucv_handler netiucv_handler = { |
| 154 | .path_pending = netiucv_callback_connreq, |
| 155 | .path_complete = netiucv_callback_connack, |
| 156 | .path_severed = netiucv_callback_connrej, |
| 157 | .path_quiesced = netiucv_callback_connsusp, |
| 158 | .path_resumed = netiucv_callback_connres, |
| 159 | .message_pending = netiucv_callback_rx, |
| 160 | .message_complete = netiucv_callback_txdone |
| 161 | }; |
| 162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | /** |
| 164 | * Per connection profiling data |
| 165 | */ |
| 166 | struct connection_profile { |
| 167 | unsigned long maxmulti; |
| 168 | unsigned long maxcqueue; |
| 169 | unsigned long doios_single; |
| 170 | unsigned long doios_multi; |
| 171 | unsigned long txlen; |
| 172 | unsigned long tx_time; |
| 173 | struct timespec send_stamp; |
| 174 | unsigned long tx_pending; |
| 175 | unsigned long tx_max_pending; |
| 176 | }; |
| 177 | |
| 178 | /** |
| 179 | * Representation of one iucv connection |
| 180 | */ |
| 181 | struct iucv_connection { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 182 | struct list_head list; |
| 183 | struct iucv_path *path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | struct sk_buff *rx_buff; |
| 185 | struct sk_buff *tx_buff; |
| 186 | struct sk_buff_head collect_queue; |
| 187 | struct sk_buff_head commit_queue; |
| 188 | spinlock_t collect_lock; |
| 189 | int collect_len; |
| 190 | int max_buffsize; |
| 191 | fsm_timer timer; |
| 192 | fsm_instance *fsm; |
| 193 | struct net_device *netdev; |
| 194 | struct connection_profile prof; |
| 195 | char userid[9]; |
| 196 | }; |
| 197 | |
| 198 | /** |
| 199 | * Linked list of all connection structs. |
| 200 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 201 | static struct list_head iucv_connection_list = |
| 202 | LIST_HEAD_INIT(iucv_connection_list); |
Thomas Gleixner | bfac0d0 | 2007-06-20 13:02:55 +0200 | [diff] [blame] | 203 | static DEFINE_RWLOCK(iucv_connection_rwlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
| 205 | /** |
| 206 | * Representation of event-data for the |
| 207 | * connection state machine. |
| 208 | */ |
| 209 | struct iucv_event { |
| 210 | struct iucv_connection *conn; |
| 211 | void *data; |
| 212 | }; |
| 213 | |
| 214 | /** |
| 215 | * Private part of the network device structure |
| 216 | */ |
| 217 | struct netiucv_priv { |
| 218 | struct net_device_stats stats; |
| 219 | unsigned long tbusy; |
| 220 | fsm_instance *fsm; |
| 221 | struct iucv_connection *conn; |
| 222 | struct device *dev; |
| 223 | }; |
| 224 | |
| 225 | /** |
| 226 | * Link level header for a packet. |
| 227 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 228 | struct ll_header { |
| 229 | u16 next; |
| 230 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 232 | #define NETIUCV_HDRLEN (sizeof(struct ll_header)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | #define NETIUCV_BUFSIZE_MAX 32768 |
| 234 | #define NETIUCV_BUFSIZE_DEFAULT NETIUCV_BUFSIZE_MAX |
| 235 | #define NETIUCV_MTU_MAX (NETIUCV_BUFSIZE_MAX - NETIUCV_HDRLEN) |
| 236 | #define NETIUCV_MTU_DEFAULT 9216 |
| 237 | #define NETIUCV_QUEUELEN_DEFAULT 50 |
| 238 | #define NETIUCV_TIMEOUT_5SEC 5000 |
| 239 | |
| 240 | /** |
| 241 | * Compatibility macros for busy handling |
| 242 | * of network devices. |
| 243 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 244 | static inline void netiucv_clear_busy(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 246 | struct netiucv_priv *priv = netdev_priv(dev); |
| 247 | clear_bit(0, &priv->tbusy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | netif_wake_queue(dev); |
| 249 | } |
| 250 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 251 | static inline int netiucv_test_and_set_busy(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 253 | struct netiucv_priv *priv = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | netif_stop_queue(dev); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 255 | return test_and_set_bit(0, &priv->tbusy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
| 257 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 258 | static u8 iucvMagic[16] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | 0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, |
| 260 | 0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40 |
| 261 | }; |
| 262 | |
| 263 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | * Convert an iucv userId to its printable |
| 265 | * form (strip whitespace at end). |
| 266 | * |
| 267 | * @param An iucv userId |
| 268 | * |
| 269 | * @returns The printable string (static data!!) |
| 270 | */ |
Martin Schwidefsky | d461462 | 2007-06-20 13:03:57 +0200 | [diff] [blame] | 271 | static char *netiucv_printname(char *name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | { |
| 273 | static char tmp[9]; |
| 274 | char *p = tmp; |
| 275 | memcpy(tmp, name, 8); |
| 276 | tmp[8] = '\0'; |
| 277 | while (*p && (!isspace(*p))) |
| 278 | p++; |
| 279 | *p = '\0'; |
| 280 | return tmp; |
| 281 | } |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 282 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | /** |
| 284 | * States of the interface statemachine. |
| 285 | */ |
| 286 | enum dev_states { |
| 287 | DEV_STATE_STOPPED, |
| 288 | DEV_STATE_STARTWAIT, |
| 289 | DEV_STATE_STOPWAIT, |
| 290 | DEV_STATE_RUNNING, |
| 291 | /** |
| 292 | * MUST be always the last element!! |
| 293 | */ |
| 294 | NR_DEV_STATES |
| 295 | }; |
| 296 | |
| 297 | static const char *dev_state_names[] = { |
| 298 | "Stopped", |
| 299 | "StartWait", |
| 300 | "StopWait", |
| 301 | "Running", |
| 302 | }; |
| 303 | |
| 304 | /** |
| 305 | * Events of the interface statemachine. |
| 306 | */ |
| 307 | enum dev_events { |
| 308 | DEV_EVENT_START, |
| 309 | DEV_EVENT_STOP, |
| 310 | DEV_EVENT_CONUP, |
| 311 | DEV_EVENT_CONDOWN, |
| 312 | /** |
| 313 | * MUST be always the last element!! |
| 314 | */ |
| 315 | NR_DEV_EVENTS |
| 316 | }; |
| 317 | |
| 318 | static const char *dev_event_names[] = { |
| 319 | "Start", |
| 320 | "Stop", |
| 321 | "Connection up", |
| 322 | "Connection down", |
| 323 | }; |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 324 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | /** |
| 326 | * Events of the connection statemachine |
| 327 | */ |
| 328 | enum conn_events { |
| 329 | /** |
| 330 | * Events, representing callbacks from |
| 331 | * lowlevel iucv layer) |
| 332 | */ |
| 333 | CONN_EVENT_CONN_REQ, |
| 334 | CONN_EVENT_CONN_ACK, |
| 335 | CONN_EVENT_CONN_REJ, |
| 336 | CONN_EVENT_CONN_SUS, |
| 337 | CONN_EVENT_CONN_RES, |
| 338 | CONN_EVENT_RX, |
| 339 | CONN_EVENT_TXDONE, |
| 340 | |
| 341 | /** |
| 342 | * Events, representing errors return codes from |
| 343 | * calls to lowlevel iucv layer |
| 344 | */ |
| 345 | |
| 346 | /** |
| 347 | * Event, representing timer expiry. |
| 348 | */ |
| 349 | CONN_EVENT_TIMER, |
| 350 | |
| 351 | /** |
| 352 | * Events, representing commands from upper levels. |
| 353 | */ |
| 354 | CONN_EVENT_START, |
| 355 | CONN_EVENT_STOP, |
| 356 | |
| 357 | /** |
| 358 | * MUST be always the last element!! |
| 359 | */ |
| 360 | NR_CONN_EVENTS, |
| 361 | }; |
| 362 | |
| 363 | static const char *conn_event_names[] = { |
| 364 | "Remote connection request", |
| 365 | "Remote connection acknowledge", |
| 366 | "Remote connection reject", |
| 367 | "Connection suspended", |
| 368 | "Connection resumed", |
| 369 | "Data received", |
| 370 | "Data sent", |
| 371 | |
| 372 | "Timer", |
| 373 | |
| 374 | "Start", |
| 375 | "Stop", |
| 376 | }; |
| 377 | |
| 378 | /** |
| 379 | * States of the connection statemachine. |
| 380 | */ |
| 381 | enum conn_states { |
| 382 | /** |
| 383 | * Connection not assigned to any device, |
| 384 | * initial state, invalid |
| 385 | */ |
| 386 | CONN_STATE_INVALID, |
| 387 | |
| 388 | /** |
| 389 | * Userid assigned but not operating |
| 390 | */ |
| 391 | CONN_STATE_STOPPED, |
| 392 | |
| 393 | /** |
| 394 | * Connection registered, |
| 395 | * no connection request sent yet, |
| 396 | * no connection request received |
| 397 | */ |
| 398 | CONN_STATE_STARTWAIT, |
| 399 | |
| 400 | /** |
| 401 | * Connection registered and connection request sent, |
| 402 | * no acknowledge and no connection request received yet. |
| 403 | */ |
| 404 | CONN_STATE_SETUPWAIT, |
| 405 | |
| 406 | /** |
| 407 | * Connection up and running idle |
| 408 | */ |
| 409 | CONN_STATE_IDLE, |
| 410 | |
| 411 | /** |
| 412 | * Data sent, awaiting CONN_EVENT_TXDONE |
| 413 | */ |
| 414 | CONN_STATE_TX, |
| 415 | |
| 416 | /** |
| 417 | * Error during registration. |
| 418 | */ |
| 419 | CONN_STATE_REGERR, |
| 420 | |
| 421 | /** |
| 422 | * Error during registration. |
| 423 | */ |
| 424 | CONN_STATE_CONNERR, |
| 425 | |
| 426 | /** |
| 427 | * MUST be always the last element!! |
| 428 | */ |
| 429 | NR_CONN_STATES, |
| 430 | }; |
| 431 | |
| 432 | static const char *conn_state_names[] = { |
| 433 | "Invalid", |
| 434 | "Stopped", |
| 435 | "StartWait", |
| 436 | "SetupWait", |
| 437 | "Idle", |
| 438 | "TX", |
| 439 | "Terminating", |
| 440 | "Registration error", |
| 441 | "Connect error", |
| 442 | }; |
| 443 | |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 444 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | /** |
| 446 | * Debug Facility Stuff |
| 447 | */ |
| 448 | static debug_info_t *iucv_dbf_setup = NULL; |
| 449 | static debug_info_t *iucv_dbf_data = NULL; |
| 450 | static debug_info_t *iucv_dbf_trace = NULL; |
| 451 | |
| 452 | DEFINE_PER_CPU(char[256], iucv_dbf_txt_buf); |
| 453 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 454 | static void iucv_unregister_dbf_views(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | { |
| 456 | if (iucv_dbf_setup) |
| 457 | debug_unregister(iucv_dbf_setup); |
| 458 | if (iucv_dbf_data) |
| 459 | debug_unregister(iucv_dbf_data); |
| 460 | if (iucv_dbf_trace) |
| 461 | debug_unregister(iucv_dbf_trace); |
| 462 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 463 | static int iucv_register_dbf_views(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | { |
| 465 | iucv_dbf_setup = debug_register(IUCV_DBF_SETUP_NAME, |
Michael Holzheu | 66a464d | 2005-06-25 14:55:33 -0700 | [diff] [blame] | 466 | IUCV_DBF_SETUP_PAGES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | IUCV_DBF_SETUP_NR_AREAS, |
| 468 | IUCV_DBF_SETUP_LEN); |
| 469 | iucv_dbf_data = debug_register(IUCV_DBF_DATA_NAME, |
Michael Holzheu | 66a464d | 2005-06-25 14:55:33 -0700 | [diff] [blame] | 470 | IUCV_DBF_DATA_PAGES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | IUCV_DBF_DATA_NR_AREAS, |
| 472 | IUCV_DBF_DATA_LEN); |
| 473 | iucv_dbf_trace = debug_register(IUCV_DBF_TRACE_NAME, |
Michael Holzheu | 66a464d | 2005-06-25 14:55:33 -0700 | [diff] [blame] | 474 | IUCV_DBF_TRACE_PAGES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | IUCV_DBF_TRACE_NR_AREAS, |
| 476 | IUCV_DBF_TRACE_LEN); |
| 477 | |
| 478 | if ((iucv_dbf_setup == NULL) || (iucv_dbf_data == NULL) || |
| 479 | (iucv_dbf_trace == NULL)) { |
| 480 | iucv_unregister_dbf_views(); |
| 481 | return -ENOMEM; |
| 482 | } |
| 483 | debug_register_view(iucv_dbf_setup, &debug_hex_ascii_view); |
| 484 | debug_set_level(iucv_dbf_setup, IUCV_DBF_SETUP_LEVEL); |
| 485 | |
| 486 | debug_register_view(iucv_dbf_data, &debug_hex_ascii_view); |
| 487 | debug_set_level(iucv_dbf_data, IUCV_DBF_DATA_LEVEL); |
| 488 | |
| 489 | debug_register_view(iucv_dbf_trace, &debug_hex_ascii_view); |
| 490 | debug_set_level(iucv_dbf_trace, IUCV_DBF_TRACE_LEVEL); |
| 491 | |
| 492 | return 0; |
| 493 | } |
| 494 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 495 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | * Callback-wrappers, called from lowlevel iucv layer. |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 497 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 499 | static void netiucv_callback_rx(struct iucv_path *path, |
| 500 | struct iucv_message *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 502 | struct iucv_connection *conn = path->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | struct iucv_event ev; |
| 504 | |
| 505 | ev.conn = conn; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 506 | ev.data = msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | fsm_event(conn->fsm, CONN_EVENT_RX, &ev); |
| 508 | } |
| 509 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 510 | static void netiucv_callback_txdone(struct iucv_path *path, |
| 511 | struct iucv_message *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 513 | struct iucv_connection *conn = path->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | struct iucv_event ev; |
| 515 | |
| 516 | ev.conn = conn; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 517 | ev.data = msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | fsm_event(conn->fsm, CONN_EVENT_TXDONE, &ev); |
| 519 | } |
| 520 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 521 | static void netiucv_callback_connack(struct iucv_path *path, u8 ipuser[16]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 523 | struct iucv_connection *conn = path->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 525 | fsm_event(conn->fsm, CONN_EVENT_CONN_ACK, conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | } |
| 527 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 528 | static int netiucv_callback_connreq(struct iucv_path *path, |
| 529 | u8 ipvmid[8], u8 ipuser[16]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 531 | struct iucv_connection *conn = path->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | struct iucv_event ev; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 533 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 535 | if (memcmp(iucvMagic, ipuser, sizeof(ipuser))) |
| 536 | /* ipuser must match iucvMagic. */ |
| 537 | return -EINVAL; |
| 538 | rc = -EINVAL; |
| 539 | read_lock_bh(&iucv_connection_rwlock); |
| 540 | list_for_each_entry(conn, &iucv_connection_list, list) { |
| 541 | if (strncmp(ipvmid, conn->userid, 8)) |
| 542 | continue; |
| 543 | /* Found a matching connection for this path. */ |
| 544 | conn->path = path; |
| 545 | ev.conn = conn; |
| 546 | ev.data = path; |
| 547 | fsm_event(conn->fsm, CONN_EVENT_CONN_REQ, &ev); |
| 548 | rc = 0; |
| 549 | } |
| 550 | read_unlock_bh(&iucv_connection_rwlock); |
| 551 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | } |
| 553 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 554 | static void netiucv_callback_connrej(struct iucv_path *path, u8 ipuser[16]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 556 | struct iucv_connection *conn = path->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 558 | fsm_event(conn->fsm, CONN_EVENT_CONN_REJ, conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | } |
| 560 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 561 | static void netiucv_callback_connsusp(struct iucv_path *path, u8 ipuser[16]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 563 | struct iucv_connection *conn = path->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 565 | fsm_event(conn->fsm, CONN_EVENT_CONN_SUS, conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | } |
| 567 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 568 | static void netiucv_callback_connres(struct iucv_path *path, u8 ipuser[16]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 570 | struct iucv_connection *conn = path->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 572 | fsm_event(conn->fsm, CONN_EVENT_CONN_RES, conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | } |
| 574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | /** |
| 576 | * Dummy NOP action for all statemachines |
| 577 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 578 | static void fsm_action_nop(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | { |
| 580 | } |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 581 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 582 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | * Actions of the connection statemachine |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 584 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | |
| 586 | /** |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 587 | * netiucv_unpack_skb |
| 588 | * @conn: The connection where this skb has been received. |
| 589 | * @pskb: The received skb. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | * |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 591 | * Unpack a just received skb and hand it over to upper layers. |
| 592 | * Helper function for conn_action_rx. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 594 | static void netiucv_unpack_skb(struct iucv_connection *conn, |
| 595 | struct sk_buff *pskb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | { |
| 597 | struct net_device *dev = conn->netdev; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 598 | struct netiucv_priv *privptr = netdev_priv(dev); |
| 599 | u16 offset = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
| 601 | skb_put(pskb, NETIUCV_HDRLEN); |
| 602 | pskb->dev = dev; |
| 603 | pskb->ip_summed = CHECKSUM_NONE; |
| 604 | pskb->protocol = ntohs(ETH_P_IP); |
| 605 | |
| 606 | while (1) { |
| 607 | struct sk_buff *skb; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 608 | struct ll_header *header = (struct ll_header *) pskb->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | |
| 610 | if (!header->next) |
| 611 | break; |
| 612 | |
| 613 | skb_pull(pskb, NETIUCV_HDRLEN); |
| 614 | header->next -= offset; |
| 615 | offset += header->next; |
| 616 | header->next -= NETIUCV_HDRLEN; |
| 617 | if (skb_tailroom(pskb) < header->next) { |
| 618 | PRINT_WARN("%s: Illegal next field in iucv header: " |
| 619 | "%d > %d\n", |
| 620 | dev->name, header->next, skb_tailroom(pskb)); |
| 621 | IUCV_DBF_TEXT_(data, 2, "Illegal next field: %d > %d\n", |
| 622 | header->next, skb_tailroom(pskb)); |
| 623 | return; |
| 624 | } |
| 625 | skb_put(pskb, header->next); |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 626 | skb_reset_mac_header(pskb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | skb = dev_alloc_skb(pskb->len); |
| 628 | if (!skb) { |
| 629 | PRINT_WARN("%s Out of memory in netiucv_unpack_skb\n", |
| 630 | dev->name); |
| 631 | IUCV_DBF_TEXT(data, 2, |
| 632 | "Out of memory in netiucv_unpack_skb\n"); |
| 633 | privptr->stats.rx_dropped++; |
| 634 | return; |
| 635 | } |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 636 | skb_copy_from_linear_data(pskb, skb_put(skb, pskb->len), |
| 637 | pskb->len); |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 638 | skb_reset_mac_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | skb->dev = pskb->dev; |
| 640 | skb->protocol = pskb->protocol; |
| 641 | pskb->ip_summed = CHECKSUM_UNNECESSARY; |
Julia Lawall | 9b3efc0 | 2007-12-10 17:17:37 -0800 | [diff] [blame^] | 642 | privptr->stats.rx_packets++; |
| 643 | privptr->stats.rx_bytes += skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | /* |
| 645 | * Since receiving is always initiated from a tasklet (in iucv.c), |
| 646 | * we must use netif_rx_ni() instead of netif_rx() |
| 647 | */ |
| 648 | netif_rx_ni(skb); |
| 649 | dev->last_rx = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | skb_pull(pskb, header->next); |
| 651 | skb_put(pskb, NETIUCV_HDRLEN); |
| 652 | } |
| 653 | } |
| 654 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 655 | static void conn_action_rx(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 657 | struct iucv_event *ev = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | struct iucv_connection *conn = ev->conn; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 659 | struct iucv_message *msg = ev->data; |
| 660 | struct netiucv_priv *privptr = netdev_priv(conn->netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | int rc; |
| 662 | |
| 663 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 664 | |
| 665 | if (!conn->netdev) { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 666 | iucv_message_reject(conn->path, msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | PRINT_WARN("Received data for unlinked connection\n"); |
| 668 | IUCV_DBF_TEXT(data, 2, |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 669 | "Received data for unlinked connection\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | return; |
| 671 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 672 | if (msg->length > conn->max_buffsize) { |
| 673 | iucv_message_reject(conn->path, msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | privptr->stats.rx_dropped++; |
| 675 | PRINT_WARN("msglen %d > max_buffsize %d\n", |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 676 | msg->length, conn->max_buffsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | IUCV_DBF_TEXT_(data, 2, "msglen %d > max_buffsize %d\n", |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 678 | msg->length, conn->max_buffsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | return; |
| 680 | } |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 681 | conn->rx_buff->data = conn->rx_buff->head; |
| 682 | skb_reset_tail_pointer(conn->rx_buff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | conn->rx_buff->len = 0; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 684 | rc = iucv_message_receive(conn->path, msg, 0, conn->rx_buff->data, |
| 685 | msg->length, NULL); |
| 686 | if (rc || msg->length < 5) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | privptr->stats.rx_errors++; |
| 688 | PRINT_WARN("iucv_receive returned %08x\n", rc); |
| 689 | IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_receive\n", rc); |
| 690 | return; |
| 691 | } |
| 692 | netiucv_unpack_skb(conn, conn->rx_buff); |
| 693 | } |
| 694 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 695 | static void conn_action_txdone(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 697 | struct iucv_event *ev = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | struct iucv_connection *conn = ev->conn; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 699 | struct iucv_message *msg = ev->data; |
| 700 | struct iucv_message txmsg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | struct netiucv_priv *privptr = NULL; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 702 | u32 single_flag = msg->tag; |
| 703 | u32 txbytes = 0; |
| 704 | u32 txpackets = 0; |
| 705 | u32 stat_maxcq = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | struct sk_buff *skb; |
| 707 | unsigned long saveflags; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 708 | struct ll_header header; |
| 709 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | |
| 711 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 712 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 713 | if (conn && conn->netdev) |
| 714 | privptr = netdev_priv(conn->netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | conn->prof.tx_pending--; |
| 716 | if (single_flag) { |
| 717 | if ((skb = skb_dequeue(&conn->commit_queue))) { |
| 718 | atomic_dec(&skb->users); |
| 719 | dev_kfree_skb_any(skb); |
| 720 | if (privptr) { |
| 721 | privptr->stats.tx_packets++; |
| 722 | privptr->stats.tx_bytes += |
| 723 | (skb->len - NETIUCV_HDRLEN |
| 724 | - NETIUCV_HDRLEN); |
| 725 | } |
| 726 | } |
| 727 | } |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 728 | conn->tx_buff->data = conn->tx_buff->head; |
| 729 | skb_reset_tail_pointer(conn->tx_buff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | conn->tx_buff->len = 0; |
| 731 | spin_lock_irqsave(&conn->collect_lock, saveflags); |
| 732 | while ((skb = skb_dequeue(&conn->collect_queue))) { |
| 733 | header.next = conn->tx_buff->len + skb->len + NETIUCV_HDRLEN; |
| 734 | memcpy(skb_put(conn->tx_buff, NETIUCV_HDRLEN), &header, |
| 735 | NETIUCV_HDRLEN); |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 736 | skb_copy_from_linear_data(skb, |
| 737 | skb_put(conn->tx_buff, skb->len), |
| 738 | skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | txbytes += skb->len; |
| 740 | txpackets++; |
| 741 | stat_maxcq++; |
| 742 | atomic_dec(&skb->users); |
| 743 | dev_kfree_skb_any(skb); |
| 744 | } |
| 745 | if (conn->collect_len > conn->prof.maxmulti) |
| 746 | conn->prof.maxmulti = conn->collect_len; |
| 747 | conn->collect_len = 0; |
| 748 | spin_unlock_irqrestore(&conn->collect_lock, saveflags); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 749 | if (conn->tx_buff->len == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | fsm_newstate(fi, CONN_STATE_IDLE); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 751 | return; |
| 752 | } |
| 753 | |
| 754 | header.next = 0; |
| 755 | memcpy(skb_put(conn->tx_buff, NETIUCV_HDRLEN), &header, NETIUCV_HDRLEN); |
john stultz | 2c6b47d | 2007-07-24 17:47:43 -0700 | [diff] [blame] | 756 | conn->prof.send_stamp = current_kernel_time(); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 757 | txmsg.class = 0; |
| 758 | txmsg.tag = 0; |
| 759 | rc = iucv_message_send(conn->path, &txmsg, 0, 0, |
| 760 | conn->tx_buff->data, conn->tx_buff->len); |
| 761 | conn->prof.doios_multi++; |
| 762 | conn->prof.txlen += conn->tx_buff->len; |
| 763 | conn->prof.tx_pending++; |
| 764 | if (conn->prof.tx_pending > conn->prof.tx_max_pending) |
| 765 | conn->prof.tx_max_pending = conn->prof.tx_pending; |
| 766 | if (rc) { |
| 767 | conn->prof.tx_pending--; |
| 768 | fsm_newstate(fi, CONN_STATE_IDLE); |
| 769 | if (privptr) |
| 770 | privptr->stats.tx_errors += txpackets; |
| 771 | PRINT_WARN("iucv_send returned %08x\n", rc); |
| 772 | IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_send\n", rc); |
| 773 | } else { |
| 774 | if (privptr) { |
| 775 | privptr->stats.tx_packets += txpackets; |
| 776 | privptr->stats.tx_bytes += txbytes; |
| 777 | } |
| 778 | if (stat_maxcq > conn->prof.maxcqueue) |
| 779 | conn->prof.maxcqueue = stat_maxcq; |
| 780 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | } |
| 782 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 783 | static void conn_action_connaccept(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 785 | struct iucv_event *ev = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | struct iucv_connection *conn = ev->conn; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 787 | struct iucv_path *path = ev->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | struct net_device *netdev = conn->netdev; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 789 | struct netiucv_priv *privptr = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | |
| 792 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 793 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 794 | conn->path = path; |
| 795 | path->msglim = NETIUCV_QUEUELEN_DEFAULT; |
| 796 | path->flags = 0; |
| 797 | rc = iucv_path_accept(path, &netiucv_handler, NULL, conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | if (rc) { |
| 799 | PRINT_WARN("%s: IUCV accept failed with error %d\n", |
| 800 | netdev->name, rc); |
| 801 | IUCV_DBF_TEXT_(setup, 2, "rc %d from iucv_accept", rc); |
| 802 | return; |
| 803 | } |
| 804 | fsm_newstate(fi, CONN_STATE_IDLE); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 805 | netdev->tx_queue_len = conn->path->msglim; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | fsm_event(privptr->fsm, DEV_EVENT_CONUP, netdev); |
| 807 | } |
| 808 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 809 | static void conn_action_connreject(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 811 | struct iucv_event *ev = arg; |
| 812 | struct iucv_path *path = ev->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
| 814 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 815 | iucv_path_sever(path, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | } |
| 817 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 818 | static void conn_action_connack(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 820 | struct iucv_connection *conn = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | struct net_device *netdev = conn->netdev; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 822 | struct netiucv_priv *privptr = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | |
| 824 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | fsm_deltimer(&conn->timer); |
| 826 | fsm_newstate(fi, CONN_STATE_IDLE); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 827 | netdev->tx_queue_len = conn->path->msglim; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | fsm_event(privptr->fsm, DEV_EVENT_CONUP, netdev); |
| 829 | } |
| 830 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 831 | static void conn_action_conntimsev(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 833 | struct iucv_connection *conn = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | |
| 835 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | fsm_deltimer(&conn->timer); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 837 | iucv_path_sever(conn->path, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | fsm_newstate(fi, CONN_STATE_STARTWAIT); |
| 839 | } |
| 840 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 841 | static void conn_action_connsever(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 843 | struct iucv_connection *conn = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | struct net_device *netdev = conn->netdev; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 845 | struct netiucv_priv *privptr = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | |
| 847 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 848 | |
| 849 | fsm_deltimer(&conn->timer); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 850 | iucv_path_sever(conn->path, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | PRINT_INFO("%s: Remote dropped connection\n", netdev->name); |
| 852 | IUCV_DBF_TEXT(data, 2, |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 853 | "conn_action_connsever: Remote dropped connection\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | fsm_newstate(fi, CONN_STATE_STARTWAIT); |
| 855 | fsm_event(privptr->fsm, DEV_EVENT_CONDOWN, netdev); |
| 856 | } |
| 857 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 858 | static void conn_action_start(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 860 | struct iucv_connection *conn = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | int rc; |
| 862 | |
| 863 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 864 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 865 | fsm_newstate(fi, CONN_STATE_STARTWAIT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | PRINT_DEBUG("%s('%s'): connecting ...\n", |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 867 | conn->netdev->name, conn->userid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 869 | /* |
| 870 | * We must set the state before calling iucv_connect because the |
| 871 | * callback handler could be called at any point after the connection |
| 872 | * request is sent |
| 873 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | |
| 875 | fsm_newstate(fi, CONN_STATE_SETUPWAIT); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 876 | conn->path = iucv_path_alloc(NETIUCV_QUEUELEN_DEFAULT, 0, GFP_KERNEL); |
| 877 | rc = iucv_path_connect(conn->path, &netiucv_handler, conn->userid, |
| 878 | NULL, iucvMagic, conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | switch (rc) { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 880 | case 0: |
| 881 | conn->netdev->tx_queue_len = conn->path->msglim; |
| 882 | fsm_addtimer(&conn->timer, NETIUCV_TIMEOUT_5SEC, |
| 883 | CONN_EVENT_TIMER, conn); |
| 884 | return; |
| 885 | case 11: |
| 886 | PRINT_INFO("%s: User %s is currently not available.\n", |
| 887 | conn->netdev->name, |
| 888 | netiucv_printname(conn->userid)); |
| 889 | fsm_newstate(fi, CONN_STATE_STARTWAIT); |
| 890 | break; |
| 891 | case 12: |
| 892 | PRINT_INFO("%s: User %s is currently not ready.\n", |
| 893 | conn->netdev->name, |
| 894 | netiucv_printname(conn->userid)); |
| 895 | fsm_newstate(fi, CONN_STATE_STARTWAIT); |
| 896 | break; |
| 897 | case 13: |
| 898 | PRINT_WARN("%s: Too many IUCV connections.\n", |
| 899 | conn->netdev->name); |
| 900 | fsm_newstate(fi, CONN_STATE_CONNERR); |
| 901 | break; |
| 902 | case 14: |
| 903 | PRINT_WARN("%s: User %s has too many IUCV connections.\n", |
| 904 | conn->netdev->name, |
| 905 | netiucv_printname(conn->userid)); |
| 906 | fsm_newstate(fi, CONN_STATE_CONNERR); |
| 907 | break; |
| 908 | case 15: |
| 909 | PRINT_WARN("%s: No IUCV authorization in CP directory.\n", |
| 910 | conn->netdev->name); |
| 911 | fsm_newstate(fi, CONN_STATE_CONNERR); |
| 912 | break; |
| 913 | default: |
| 914 | PRINT_WARN("%s: iucv_connect returned error %d\n", |
| 915 | conn->netdev->name, rc); |
| 916 | fsm_newstate(fi, CONN_STATE_CONNERR); |
| 917 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | } |
| 919 | IUCV_DBF_TEXT_(setup, 5, "iucv_connect rc is %d\n", rc); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 920 | kfree(conn->path); |
| 921 | conn->path = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | } |
| 923 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 924 | static void netiucv_purge_skb_queue(struct sk_buff_head *q) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | { |
| 926 | struct sk_buff *skb; |
| 927 | |
| 928 | while ((skb = skb_dequeue(q))) { |
| 929 | atomic_dec(&skb->users); |
| 930 | dev_kfree_skb_any(skb); |
| 931 | } |
| 932 | } |
| 933 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 934 | static void conn_action_stop(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 936 | struct iucv_event *ev = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | struct iucv_connection *conn = ev->conn; |
| 938 | struct net_device *netdev = conn->netdev; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 939 | struct netiucv_priv *privptr = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | |
| 941 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 942 | |
| 943 | fsm_deltimer(&conn->timer); |
| 944 | fsm_newstate(fi, CONN_STATE_STOPPED); |
| 945 | netiucv_purge_skb_queue(&conn->collect_queue); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 946 | if (conn->path) { |
| 947 | IUCV_DBF_TEXT(trace, 5, "calling iucv_path_sever\n"); |
| 948 | iucv_path_sever(conn->path, iucvMagic); |
| 949 | kfree(conn->path); |
| 950 | conn->path = NULL; |
| 951 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | netiucv_purge_skb_queue(&conn->commit_queue); |
| 953 | fsm_event(privptr->fsm, DEV_EVENT_CONDOWN, netdev); |
| 954 | } |
| 955 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 956 | static void conn_action_inval(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 958 | struct iucv_connection *conn = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | struct net_device *netdev = conn->netdev; |
| 960 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 961 | PRINT_WARN("%s: Cannot connect without username\n", netdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | IUCV_DBF_TEXT(data, 2, "conn_action_inval called\n"); |
| 963 | } |
| 964 | |
| 965 | static const fsm_node conn_fsm[] = { |
| 966 | { CONN_STATE_INVALID, CONN_EVENT_START, conn_action_inval }, |
| 967 | { CONN_STATE_STOPPED, CONN_EVENT_START, conn_action_start }, |
| 968 | |
| 969 | { CONN_STATE_STOPPED, CONN_EVENT_STOP, conn_action_stop }, |
| 970 | { CONN_STATE_STARTWAIT, CONN_EVENT_STOP, conn_action_stop }, |
| 971 | { CONN_STATE_SETUPWAIT, CONN_EVENT_STOP, conn_action_stop }, |
| 972 | { CONN_STATE_IDLE, CONN_EVENT_STOP, conn_action_stop }, |
| 973 | { CONN_STATE_TX, CONN_EVENT_STOP, conn_action_stop }, |
| 974 | { CONN_STATE_REGERR, CONN_EVENT_STOP, conn_action_stop }, |
| 975 | { CONN_STATE_CONNERR, CONN_EVENT_STOP, conn_action_stop }, |
| 976 | |
| 977 | { CONN_STATE_STOPPED, CONN_EVENT_CONN_REQ, conn_action_connreject }, |
| 978 | { CONN_STATE_STARTWAIT, CONN_EVENT_CONN_REQ, conn_action_connaccept }, |
| 979 | { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_REQ, conn_action_connaccept }, |
| 980 | { CONN_STATE_IDLE, CONN_EVENT_CONN_REQ, conn_action_connreject }, |
| 981 | { CONN_STATE_TX, CONN_EVENT_CONN_REQ, conn_action_connreject }, |
| 982 | |
| 983 | { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_ACK, conn_action_connack }, |
| 984 | { CONN_STATE_SETUPWAIT, CONN_EVENT_TIMER, conn_action_conntimsev }, |
| 985 | |
| 986 | { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_REJ, conn_action_connsever }, |
| 987 | { CONN_STATE_IDLE, CONN_EVENT_CONN_REJ, conn_action_connsever }, |
| 988 | { CONN_STATE_TX, CONN_EVENT_CONN_REJ, conn_action_connsever }, |
| 989 | |
| 990 | { CONN_STATE_IDLE, CONN_EVENT_RX, conn_action_rx }, |
| 991 | { CONN_STATE_TX, CONN_EVENT_RX, conn_action_rx }, |
| 992 | |
| 993 | { CONN_STATE_TX, CONN_EVENT_TXDONE, conn_action_txdone }, |
| 994 | { CONN_STATE_IDLE, CONN_EVENT_TXDONE, conn_action_txdone }, |
| 995 | }; |
| 996 | |
| 997 | static const int CONN_FSM_LEN = sizeof(conn_fsm) / sizeof(fsm_node); |
| 998 | |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 999 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1000 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | * Actions for interface - statemachine. |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1002 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | |
| 1004 | /** |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1005 | * dev_action_start |
| 1006 | * @fi: An instance of an interface statemachine. |
| 1007 | * @event: The event, just happened. |
| 1008 | * @arg: Generic pointer, casted from struct net_device * upon call. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | * |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1010 | * Startup connection by sending CONN_EVENT_START to it. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1012 | static void dev_action_start(fsm_instance *fi, int event, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1014 | struct net_device *dev = arg; |
| 1015 | struct netiucv_priv *privptr = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | |
| 1017 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1018 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | fsm_newstate(fi, DEV_STATE_STARTWAIT); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1020 | fsm_event(privptr->conn->fsm, CONN_EVENT_START, privptr->conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | } |
| 1022 | |
| 1023 | /** |
| 1024 | * Shutdown connection by sending CONN_EVENT_STOP to it. |
| 1025 | * |
| 1026 | * @param fi An instance of an interface statemachine. |
| 1027 | * @param event The event, just happened. |
| 1028 | * @param arg Generic pointer, casted from struct net_device * upon call. |
| 1029 | */ |
| 1030 | static void |
| 1031 | dev_action_stop(fsm_instance *fi, int event, void *arg) |
| 1032 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1033 | struct net_device *dev = arg; |
| 1034 | struct netiucv_priv *privptr = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | struct iucv_event ev; |
| 1036 | |
| 1037 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1038 | |
| 1039 | ev.conn = privptr->conn; |
| 1040 | |
| 1041 | fsm_newstate(fi, DEV_STATE_STOPWAIT); |
| 1042 | fsm_event(privptr->conn->fsm, CONN_EVENT_STOP, &ev); |
| 1043 | } |
| 1044 | |
| 1045 | /** |
| 1046 | * Called from connection statemachine |
| 1047 | * when a connection is up and running. |
| 1048 | * |
| 1049 | * @param fi An instance of an interface statemachine. |
| 1050 | * @param event The event, just happened. |
| 1051 | * @param arg Generic pointer, casted from struct net_device * upon call. |
| 1052 | */ |
| 1053 | static void |
| 1054 | dev_action_connup(fsm_instance *fi, int event, void *arg) |
| 1055 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1056 | struct net_device *dev = arg; |
| 1057 | struct netiucv_priv *privptr = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | |
| 1059 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1060 | |
| 1061 | switch (fsm_getstate(fi)) { |
| 1062 | case DEV_STATE_STARTWAIT: |
| 1063 | fsm_newstate(fi, DEV_STATE_RUNNING); |
| 1064 | PRINT_INFO("%s: connected with remote side %s\n", |
| 1065 | dev->name, privptr->conn->userid); |
| 1066 | IUCV_DBF_TEXT(setup, 3, |
| 1067 | "connection is up and running\n"); |
| 1068 | break; |
| 1069 | case DEV_STATE_STOPWAIT: |
| 1070 | PRINT_INFO( |
| 1071 | "%s: got connection UP event during shutdown!\n", |
| 1072 | dev->name); |
| 1073 | IUCV_DBF_TEXT(data, 2, |
| 1074 | "dev_action_connup: in DEV_STATE_STOPWAIT\n"); |
| 1075 | break; |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | /** |
| 1080 | * Called from connection statemachine |
| 1081 | * when a connection has been shutdown. |
| 1082 | * |
| 1083 | * @param fi An instance of an interface statemachine. |
| 1084 | * @param event The event, just happened. |
| 1085 | * @param arg Generic pointer, casted from struct net_device * upon call. |
| 1086 | */ |
| 1087 | static void |
| 1088 | dev_action_conndown(fsm_instance *fi, int event, void *arg) |
| 1089 | { |
| 1090 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1091 | |
| 1092 | switch (fsm_getstate(fi)) { |
| 1093 | case DEV_STATE_RUNNING: |
| 1094 | fsm_newstate(fi, DEV_STATE_STARTWAIT); |
| 1095 | break; |
| 1096 | case DEV_STATE_STOPWAIT: |
| 1097 | fsm_newstate(fi, DEV_STATE_STOPPED); |
| 1098 | IUCV_DBF_TEXT(setup, 3, "connection is down\n"); |
| 1099 | break; |
| 1100 | } |
| 1101 | } |
| 1102 | |
| 1103 | static const fsm_node dev_fsm[] = { |
| 1104 | { DEV_STATE_STOPPED, DEV_EVENT_START, dev_action_start }, |
| 1105 | |
| 1106 | { DEV_STATE_STOPWAIT, DEV_EVENT_START, dev_action_start }, |
| 1107 | { DEV_STATE_STOPWAIT, DEV_EVENT_CONDOWN, dev_action_conndown }, |
| 1108 | |
| 1109 | { DEV_STATE_STARTWAIT, DEV_EVENT_STOP, dev_action_stop }, |
| 1110 | { DEV_STATE_STARTWAIT, DEV_EVENT_CONUP, dev_action_connup }, |
| 1111 | |
| 1112 | { DEV_STATE_RUNNING, DEV_EVENT_STOP, dev_action_stop }, |
| 1113 | { DEV_STATE_RUNNING, DEV_EVENT_CONDOWN, dev_action_conndown }, |
| 1114 | { DEV_STATE_RUNNING, DEV_EVENT_CONUP, fsm_action_nop }, |
| 1115 | }; |
| 1116 | |
| 1117 | static const int DEV_FSM_LEN = sizeof(dev_fsm) / sizeof(fsm_node); |
| 1118 | |
| 1119 | /** |
| 1120 | * Transmit a packet. |
| 1121 | * This is a helper function for netiucv_tx(). |
| 1122 | * |
| 1123 | * @param conn Connection to be used for sending. |
| 1124 | * @param skb Pointer to struct sk_buff of packet to send. |
| 1125 | * The linklevel header has already been set up |
| 1126 | * by netiucv_tx(). |
| 1127 | * |
| 1128 | * @return 0 on success, -ERRNO on failure. (Never fails.) |
| 1129 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1130 | static int netiucv_transmit_skb(struct iucv_connection *conn, |
| 1131 | struct sk_buff *skb) |
| 1132 | { |
| 1133 | struct iucv_message msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | unsigned long saveflags; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1135 | struct ll_header header; |
| 1136 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | |
| 1138 | if (fsm_getstate(conn->fsm) != CONN_STATE_IDLE) { |
| 1139 | int l = skb->len + NETIUCV_HDRLEN; |
| 1140 | |
| 1141 | spin_lock_irqsave(&conn->collect_lock, saveflags); |
| 1142 | if (conn->collect_len + l > |
| 1143 | (conn->max_buffsize - NETIUCV_HDRLEN)) { |
| 1144 | rc = -EBUSY; |
| 1145 | IUCV_DBF_TEXT(data, 2, |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1146 | "EBUSY from netiucv_transmit_skb\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | } else { |
| 1148 | atomic_inc(&skb->users); |
| 1149 | skb_queue_tail(&conn->collect_queue, skb); |
| 1150 | conn->collect_len += l; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1151 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | } |
| 1153 | spin_unlock_irqrestore(&conn->collect_lock, saveflags); |
| 1154 | } else { |
| 1155 | struct sk_buff *nskb = skb; |
| 1156 | /** |
| 1157 | * Copy the skb to a new allocated skb in lowmem only if the |
| 1158 | * data is located above 2G in memory or tailroom is < 2. |
| 1159 | */ |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 1160 | unsigned long hi = ((unsigned long)(skb_tail_pointer(skb) + |
| 1161 | NETIUCV_HDRLEN)) >> 31; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | int copied = 0; |
| 1163 | if (hi || (skb_tailroom(skb) < 2)) { |
| 1164 | nskb = alloc_skb(skb->len + NETIUCV_HDRLEN + |
| 1165 | NETIUCV_HDRLEN, GFP_ATOMIC | GFP_DMA); |
| 1166 | if (!nskb) { |
| 1167 | PRINT_WARN("%s: Could not allocate tx_skb\n", |
| 1168 | conn->netdev->name); |
| 1169 | IUCV_DBF_TEXT(data, 2, "alloc_skb failed\n"); |
| 1170 | rc = -ENOMEM; |
| 1171 | return rc; |
| 1172 | } else { |
| 1173 | skb_reserve(nskb, NETIUCV_HDRLEN); |
| 1174 | memcpy(skb_put(nskb, skb->len), |
| 1175 | skb->data, skb->len); |
| 1176 | } |
| 1177 | copied = 1; |
| 1178 | } |
| 1179 | /** |
| 1180 | * skb now is below 2G and has enough room. Add headers. |
| 1181 | */ |
| 1182 | header.next = nskb->len + NETIUCV_HDRLEN; |
| 1183 | memcpy(skb_push(nskb, NETIUCV_HDRLEN), &header, NETIUCV_HDRLEN); |
| 1184 | header.next = 0; |
| 1185 | memcpy(skb_put(nskb, NETIUCV_HDRLEN), &header, NETIUCV_HDRLEN); |
| 1186 | |
| 1187 | fsm_newstate(conn->fsm, CONN_STATE_TX); |
john stultz | 2c6b47d | 2007-07-24 17:47:43 -0700 | [diff] [blame] | 1188 | conn->prof.send_stamp = current_kernel_time(); |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 1189 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1190 | msg.tag = 1; |
| 1191 | msg.class = 0; |
| 1192 | rc = iucv_message_send(conn->path, &msg, 0, 0, |
| 1193 | nskb->data, nskb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | conn->prof.doios_single++; |
| 1195 | conn->prof.txlen += skb->len; |
| 1196 | conn->prof.tx_pending++; |
| 1197 | if (conn->prof.tx_pending > conn->prof.tx_max_pending) |
| 1198 | conn->prof.tx_max_pending = conn->prof.tx_pending; |
| 1199 | if (rc) { |
| 1200 | struct netiucv_priv *privptr; |
| 1201 | fsm_newstate(conn->fsm, CONN_STATE_IDLE); |
| 1202 | conn->prof.tx_pending--; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1203 | privptr = netdev_priv(conn->netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | if (privptr) |
| 1205 | privptr->stats.tx_errors++; |
| 1206 | if (copied) |
| 1207 | dev_kfree_skb(nskb); |
| 1208 | else { |
| 1209 | /** |
| 1210 | * Remove our headers. They get added |
| 1211 | * again on retransmit. |
| 1212 | */ |
| 1213 | skb_pull(skb, NETIUCV_HDRLEN); |
| 1214 | skb_trim(skb, skb->len - NETIUCV_HDRLEN); |
| 1215 | } |
| 1216 | PRINT_WARN("iucv_send returned %08x\n", rc); |
| 1217 | IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_send\n", rc); |
| 1218 | } else { |
| 1219 | if (copied) |
| 1220 | dev_kfree_skb(skb); |
| 1221 | atomic_inc(&nskb->users); |
| 1222 | skb_queue_tail(&conn->commit_queue, nskb); |
| 1223 | } |
| 1224 | } |
| 1225 | |
| 1226 | return rc; |
| 1227 | } |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 1228 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1229 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | * Interface API for upper network layers |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1231 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | |
| 1233 | /** |
| 1234 | * Open an interface. |
| 1235 | * Called from generic network layer when ifconfig up is run. |
| 1236 | * |
| 1237 | * @param dev Pointer to interface struct. |
| 1238 | * |
| 1239 | * @return 0 on success, -ERRNO on failure. (Never fails.) |
| 1240 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1241 | static int netiucv_open(struct net_device *dev) |
| 1242 | { |
| 1243 | struct netiucv_priv *priv = netdev_priv(dev); |
| 1244 | |
| 1245 | fsm_event(priv->fsm, DEV_EVENT_START, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1246 | return 0; |
| 1247 | } |
| 1248 | |
| 1249 | /** |
| 1250 | * Close an interface. |
| 1251 | * Called from generic network layer when ifconfig down is run. |
| 1252 | * |
| 1253 | * @param dev Pointer to interface struct. |
| 1254 | * |
| 1255 | * @return 0 on success, -ERRNO on failure. (Never fails.) |
| 1256 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1257 | static int netiucv_close(struct net_device *dev) |
| 1258 | { |
| 1259 | struct netiucv_priv *priv = netdev_priv(dev); |
| 1260 | |
| 1261 | fsm_event(priv->fsm, DEV_EVENT_STOP, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | return 0; |
| 1263 | } |
| 1264 | |
| 1265 | /** |
| 1266 | * Start transmission of a packet. |
| 1267 | * Called from generic network device layer. |
| 1268 | * |
| 1269 | * @param skb Pointer to buffer containing the packet. |
| 1270 | * @param dev Pointer to interface struct. |
| 1271 | * |
| 1272 | * @return 0 if packet consumed, !0 if packet rejected. |
| 1273 | * Note: If we return !0, then the packet is free'd by |
| 1274 | * the generic network layer. |
| 1275 | */ |
| 1276 | static int netiucv_tx(struct sk_buff *skb, struct net_device *dev) |
| 1277 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1278 | struct netiucv_priv *privptr = netdev_priv(dev); |
| 1279 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | |
| 1281 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 1282 | /** |
| 1283 | * Some sanity checks ... |
| 1284 | */ |
| 1285 | if (skb == NULL) { |
| 1286 | PRINT_WARN("%s: NULL sk_buff passed\n", dev->name); |
| 1287 | IUCV_DBF_TEXT(data, 2, "netiucv_tx: skb is NULL\n"); |
| 1288 | privptr->stats.tx_dropped++; |
| 1289 | return 0; |
| 1290 | } |
| 1291 | if (skb_headroom(skb) < NETIUCV_HDRLEN) { |
| 1292 | PRINT_WARN("%s: Got sk_buff with head room < %ld bytes\n", |
| 1293 | dev->name, NETIUCV_HDRLEN); |
| 1294 | IUCV_DBF_TEXT(data, 2, |
| 1295 | "netiucv_tx: skb_headroom < NETIUCV_HDRLEN\n"); |
| 1296 | dev_kfree_skb(skb); |
| 1297 | privptr->stats.tx_dropped++; |
| 1298 | return 0; |
| 1299 | } |
| 1300 | |
| 1301 | /** |
| 1302 | * If connection is not running, try to restart it |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 1303 | * and throw away packet. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | */ |
| 1305 | if (fsm_getstate(privptr->fsm) != DEV_STATE_RUNNING) { |
Ursula Braun | 651bbc6 | 2007-06-20 13:01:30 +0200 | [diff] [blame] | 1306 | if (!in_atomic()) |
| 1307 | fsm_event(privptr->fsm, DEV_EVENT_START, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | dev_kfree_skb(skb); |
| 1309 | privptr->stats.tx_dropped++; |
| 1310 | privptr->stats.tx_errors++; |
| 1311 | privptr->stats.tx_carrier_errors++; |
| 1312 | return 0; |
| 1313 | } |
| 1314 | |
| 1315 | if (netiucv_test_and_set_busy(dev)) { |
| 1316 | IUCV_DBF_TEXT(data, 2, "EBUSY from netiucv_tx\n"); |
| 1317 | return -EBUSY; |
| 1318 | } |
| 1319 | dev->trans_start = jiffies; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1320 | rc = netiucv_transmit_skb(privptr->conn, skb) != 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | netiucv_clear_busy(dev); |
| 1322 | return rc; |
| 1323 | } |
| 1324 | |
| 1325 | /** |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1326 | * netiucv_stats |
| 1327 | * @dev: Pointer to interface struct. |
| 1328 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | * Returns interface statistics of a device. |
| 1330 | * |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1331 | * Returns pointer to stats struct of this interface. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1333 | static struct net_device_stats *netiucv_stats (struct net_device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1335 | struct netiucv_priv *priv = netdev_priv(dev); |
| 1336 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1338 | return &priv->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | } |
| 1340 | |
| 1341 | /** |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1342 | * netiucv_change_mtu |
| 1343 | * @dev: Pointer to interface struct. |
| 1344 | * @new_mtu: The new MTU to use for this interface. |
| 1345 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1346 | * Sets MTU of an interface. |
| 1347 | * |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1348 | * Returns 0 on success, -EINVAL if MTU is out of valid range. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | * (valid range is 576 .. NETIUCV_MTU_MAX). |
| 1350 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1351 | static int netiucv_change_mtu(struct net_device * dev, int new_mtu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | { |
| 1353 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1354 | if (new_mtu < 576 || new_mtu > NETIUCV_MTU_MAX) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | IUCV_DBF_TEXT(setup, 2, "given MTU out of valid range\n"); |
| 1356 | return -EINVAL; |
| 1357 | } |
| 1358 | dev->mtu = new_mtu; |
| 1359 | return 0; |
| 1360 | } |
| 1361 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1362 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | * attributes in sysfs |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1364 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1366 | static ssize_t user_show(struct device *dev, struct device_attribute *attr, |
| 1367 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | { |
| 1369 | struct netiucv_priv *priv = dev->driver_data; |
| 1370 | |
| 1371 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1372 | return sprintf(buf, "%s\n", netiucv_printname(priv->conn->userid)); |
| 1373 | } |
| 1374 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1375 | static ssize_t user_write(struct device *dev, struct device_attribute *attr, |
| 1376 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | { |
| 1378 | struct netiucv_priv *priv = dev->driver_data; |
| 1379 | struct net_device *ndev = priv->conn->netdev; |
| 1380 | char *p; |
| 1381 | char *tmp; |
Frank Pavlic | 16a83b3 | 2006-09-15 16:25:19 +0200 | [diff] [blame] | 1382 | char username[9]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | int i; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1384 | struct iucv_connection *cp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | |
| 1386 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1387 | if (count > 9) { |
| 1388 | PRINT_WARN("netiucv: username too long (%d)!\n", (int) count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | IUCV_DBF_TEXT_(setup, 2, |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1390 | "%d is length of username\n", (int) count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | return -EINVAL; |
| 1392 | } |
| 1393 | |
| 1394 | tmp = strsep((char **) &buf, "\n"); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1395 | for (i = 0, p = tmp; i < 8 && *p; i++, p++) { |
| 1396 | if (isalnum(*p) || (*p == '$')) { |
Frank Pavlic | 16a83b3 | 2006-09-15 16:25:19 +0200 | [diff] [blame] | 1397 | username[i]= toupper(*p); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1398 | continue; |
| 1399 | } |
| 1400 | if (*p == '\n') { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | /* trailing lf, grr */ |
| 1402 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1404 | PRINT_WARN("netiucv: Invalid char %c in username!\n", *p); |
| 1405 | IUCV_DBF_TEXT_(setup, 2, |
| 1406 | "username: invalid character %c\n", *p); |
| 1407 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1409 | while (i < 8) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | username[i++] = ' '; |
Frank Pavlic | 16a83b3 | 2006-09-15 16:25:19 +0200 | [diff] [blame] | 1411 | username[8] = '\0'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1413 | if (memcmp(username, priv->conn->userid, 9) && |
| 1414 | (ndev->flags & (IFF_UP | IFF_RUNNING))) { |
| 1415 | /* username changed while the interface is active. */ |
| 1416 | PRINT_WARN("netiucv: device %s active, connected to %s\n", |
| 1417 | dev->bus_id, priv->conn->userid); |
| 1418 | PRINT_WARN("netiucv: user cannot be updated\n"); |
| 1419 | IUCV_DBF_TEXT(setup, 2, "user_write: device active\n"); |
| 1420 | return -EBUSY; |
| 1421 | } |
| 1422 | read_lock_bh(&iucv_connection_rwlock); |
| 1423 | list_for_each_entry(cp, &iucv_connection_list, list) { |
| 1424 | if (!strncmp(username, cp->userid, 9) && cp->netdev != ndev) { |
| 1425 | read_unlock_bh(&iucv_connection_rwlock); |
| 1426 | PRINT_WARN("netiucv: Connection to %s already " |
| 1427 | "exists\n", username); |
| 1428 | return -EEXIST; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | } |
| 1430 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1431 | read_unlock_bh(&iucv_connection_rwlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | memcpy(priv->conn->userid, username, 9); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | return count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | } |
| 1435 | |
| 1436 | static DEVICE_ATTR(user, 0644, user_show, user_write); |
| 1437 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1438 | static ssize_t buffer_show (struct device *dev, struct device_attribute *attr, |
| 1439 | char *buf) |
| 1440 | { struct netiucv_priv *priv = dev->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | |
| 1442 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1443 | return sprintf(buf, "%d\n", priv->conn->max_buffsize); |
| 1444 | } |
| 1445 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1446 | static ssize_t buffer_write (struct device *dev, struct device_attribute *attr, |
| 1447 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | { |
| 1449 | struct netiucv_priv *priv = dev->driver_data; |
| 1450 | struct net_device *ndev = priv->conn->netdev; |
| 1451 | char *e; |
| 1452 | int bs1; |
| 1453 | |
| 1454 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1455 | if (count >= 39) |
| 1456 | return -EINVAL; |
| 1457 | |
| 1458 | bs1 = simple_strtoul(buf, &e, 0); |
| 1459 | |
| 1460 | if (e && (!isspace(*e))) { |
| 1461 | PRINT_WARN("netiucv: Invalid character in buffer!\n"); |
| 1462 | IUCV_DBF_TEXT_(setup, 2, "buffer_write: invalid char %c\n", *e); |
| 1463 | return -EINVAL; |
| 1464 | } |
| 1465 | if (bs1 > NETIUCV_BUFSIZE_MAX) { |
| 1466 | PRINT_WARN("netiucv: Given buffer size %d too large.\n", |
| 1467 | bs1); |
| 1468 | IUCV_DBF_TEXT_(setup, 2, |
| 1469 | "buffer_write: buffer size %d too large\n", |
| 1470 | bs1); |
| 1471 | return -EINVAL; |
| 1472 | } |
| 1473 | if ((ndev->flags & IFF_RUNNING) && |
| 1474 | (bs1 < (ndev->mtu + NETIUCV_HDRLEN + 2))) { |
| 1475 | PRINT_WARN("netiucv: Given buffer size %d too small.\n", |
| 1476 | bs1); |
| 1477 | IUCV_DBF_TEXT_(setup, 2, |
| 1478 | "buffer_write: buffer size %d too small\n", |
| 1479 | bs1); |
| 1480 | return -EINVAL; |
| 1481 | } |
| 1482 | if (bs1 < (576 + NETIUCV_HDRLEN + NETIUCV_HDRLEN)) { |
| 1483 | PRINT_WARN("netiucv: Given buffer size %d too small.\n", |
| 1484 | bs1); |
| 1485 | IUCV_DBF_TEXT_(setup, 2, |
| 1486 | "buffer_write: buffer size %d too small\n", |
| 1487 | bs1); |
| 1488 | return -EINVAL; |
| 1489 | } |
| 1490 | |
| 1491 | priv->conn->max_buffsize = bs1; |
| 1492 | if (!(ndev->flags & IFF_RUNNING)) |
| 1493 | ndev->mtu = bs1 - NETIUCV_HDRLEN - NETIUCV_HDRLEN; |
| 1494 | |
| 1495 | return count; |
| 1496 | |
| 1497 | } |
| 1498 | |
| 1499 | static DEVICE_ATTR(buffer, 0644, buffer_show, buffer_write); |
| 1500 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1501 | static ssize_t dev_fsm_show (struct device *dev, struct device_attribute *attr, |
| 1502 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | { |
| 1504 | struct netiucv_priv *priv = dev->driver_data; |
| 1505 | |
| 1506 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1507 | return sprintf(buf, "%s\n", fsm_getstate_str(priv->fsm)); |
| 1508 | } |
| 1509 | |
| 1510 | static DEVICE_ATTR(device_fsm_state, 0444, dev_fsm_show, NULL); |
| 1511 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1512 | static ssize_t conn_fsm_show (struct device *dev, |
| 1513 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | { |
| 1515 | struct netiucv_priv *priv = dev->driver_data; |
| 1516 | |
| 1517 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1518 | return sprintf(buf, "%s\n", fsm_getstate_str(priv->conn->fsm)); |
| 1519 | } |
| 1520 | |
| 1521 | static DEVICE_ATTR(connection_fsm_state, 0444, conn_fsm_show, NULL); |
| 1522 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1523 | static ssize_t maxmulti_show (struct device *dev, |
| 1524 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | { |
| 1526 | struct netiucv_priv *priv = dev->driver_data; |
| 1527 | |
| 1528 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1529 | return sprintf(buf, "%ld\n", priv->conn->prof.maxmulti); |
| 1530 | } |
| 1531 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1532 | static ssize_t maxmulti_write (struct device *dev, |
| 1533 | struct device_attribute *attr, |
| 1534 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | { |
| 1536 | struct netiucv_priv *priv = dev->driver_data; |
| 1537 | |
| 1538 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 1539 | priv->conn->prof.maxmulti = 0; |
| 1540 | return count; |
| 1541 | } |
| 1542 | |
| 1543 | static DEVICE_ATTR(max_tx_buffer_used, 0644, maxmulti_show, maxmulti_write); |
| 1544 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1545 | static ssize_t maxcq_show (struct device *dev, struct device_attribute *attr, |
| 1546 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | { |
| 1548 | struct netiucv_priv *priv = dev->driver_data; |
| 1549 | |
| 1550 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1551 | return sprintf(buf, "%ld\n", priv->conn->prof.maxcqueue); |
| 1552 | } |
| 1553 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1554 | static ssize_t maxcq_write (struct device *dev, struct device_attribute *attr, |
| 1555 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | { |
| 1557 | struct netiucv_priv *priv = dev->driver_data; |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 1558 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 1560 | priv->conn->prof.maxcqueue = 0; |
| 1561 | return count; |
| 1562 | } |
| 1563 | |
| 1564 | static DEVICE_ATTR(max_chained_skbs, 0644, maxcq_show, maxcq_write); |
| 1565 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1566 | static ssize_t sdoio_show (struct device *dev, struct device_attribute *attr, |
| 1567 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | { |
| 1569 | struct netiucv_priv *priv = dev->driver_data; |
| 1570 | |
| 1571 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1572 | return sprintf(buf, "%ld\n", priv->conn->prof.doios_single); |
| 1573 | } |
| 1574 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1575 | static ssize_t sdoio_write (struct device *dev, struct device_attribute *attr, |
| 1576 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | { |
| 1578 | struct netiucv_priv *priv = dev->driver_data; |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 1579 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 1581 | priv->conn->prof.doios_single = 0; |
| 1582 | return count; |
| 1583 | } |
| 1584 | |
| 1585 | static DEVICE_ATTR(tx_single_write_ops, 0644, sdoio_show, sdoio_write); |
| 1586 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1587 | static ssize_t mdoio_show (struct device *dev, struct device_attribute *attr, |
| 1588 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | { |
| 1590 | struct netiucv_priv *priv = dev->driver_data; |
| 1591 | |
| 1592 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1593 | return sprintf(buf, "%ld\n", priv->conn->prof.doios_multi); |
| 1594 | } |
| 1595 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1596 | static ssize_t mdoio_write (struct device *dev, struct device_attribute *attr, |
| 1597 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | { |
| 1599 | struct netiucv_priv *priv = dev->driver_data; |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 1600 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1602 | priv->conn->prof.doios_multi = 0; |
| 1603 | return count; |
| 1604 | } |
| 1605 | |
| 1606 | static DEVICE_ATTR(tx_multi_write_ops, 0644, mdoio_show, mdoio_write); |
| 1607 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1608 | static ssize_t txlen_show (struct device *dev, struct device_attribute *attr, |
| 1609 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | { |
| 1611 | struct netiucv_priv *priv = dev->driver_data; |
| 1612 | |
| 1613 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1614 | return sprintf(buf, "%ld\n", priv->conn->prof.txlen); |
| 1615 | } |
| 1616 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1617 | static ssize_t txlen_write (struct device *dev, struct device_attribute *attr, |
| 1618 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | { |
| 1620 | struct netiucv_priv *priv = dev->driver_data; |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 1621 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 1623 | priv->conn->prof.txlen = 0; |
| 1624 | return count; |
| 1625 | } |
| 1626 | |
| 1627 | static DEVICE_ATTR(netto_bytes, 0644, txlen_show, txlen_write); |
| 1628 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1629 | static ssize_t txtime_show (struct device *dev, struct device_attribute *attr, |
| 1630 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | { |
| 1632 | struct netiucv_priv *priv = dev->driver_data; |
| 1633 | |
| 1634 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1635 | return sprintf(buf, "%ld\n", priv->conn->prof.tx_time); |
| 1636 | } |
| 1637 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1638 | static ssize_t txtime_write (struct device *dev, struct device_attribute *attr, |
| 1639 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | { |
| 1641 | struct netiucv_priv *priv = dev->driver_data; |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 1642 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 1644 | priv->conn->prof.tx_time = 0; |
| 1645 | return count; |
| 1646 | } |
| 1647 | |
| 1648 | static DEVICE_ATTR(max_tx_io_time, 0644, txtime_show, txtime_write); |
| 1649 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1650 | static ssize_t txpend_show (struct device *dev, struct device_attribute *attr, |
| 1651 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | { |
| 1653 | struct netiucv_priv *priv = dev->driver_data; |
| 1654 | |
| 1655 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1656 | return sprintf(buf, "%ld\n", priv->conn->prof.tx_pending); |
| 1657 | } |
| 1658 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1659 | static ssize_t txpend_write (struct device *dev, struct device_attribute *attr, |
| 1660 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | { |
| 1662 | struct netiucv_priv *priv = dev->driver_data; |
| 1663 | |
| 1664 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 1665 | priv->conn->prof.tx_pending = 0; |
| 1666 | return count; |
| 1667 | } |
| 1668 | |
| 1669 | static DEVICE_ATTR(tx_pending, 0644, txpend_show, txpend_write); |
| 1670 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1671 | static ssize_t txmpnd_show (struct device *dev, struct device_attribute *attr, |
| 1672 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | { |
| 1674 | struct netiucv_priv *priv = dev->driver_data; |
| 1675 | |
| 1676 | IUCV_DBF_TEXT(trace, 5, __FUNCTION__); |
| 1677 | return sprintf(buf, "%ld\n", priv->conn->prof.tx_max_pending); |
| 1678 | } |
| 1679 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1680 | static ssize_t txmpnd_write (struct device *dev, struct device_attribute *attr, |
| 1681 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | { |
| 1683 | struct netiucv_priv *priv = dev->driver_data; |
| 1684 | |
| 1685 | IUCV_DBF_TEXT(trace, 4, __FUNCTION__); |
| 1686 | priv->conn->prof.tx_max_pending = 0; |
| 1687 | return count; |
| 1688 | } |
| 1689 | |
| 1690 | static DEVICE_ATTR(tx_max_pending, 0644, txmpnd_show, txmpnd_write); |
| 1691 | |
| 1692 | static struct attribute *netiucv_attrs[] = { |
| 1693 | &dev_attr_buffer.attr, |
| 1694 | &dev_attr_user.attr, |
| 1695 | NULL, |
| 1696 | }; |
| 1697 | |
| 1698 | static struct attribute_group netiucv_attr_group = { |
| 1699 | .attrs = netiucv_attrs, |
| 1700 | }; |
| 1701 | |
| 1702 | static struct attribute *netiucv_stat_attrs[] = { |
| 1703 | &dev_attr_device_fsm_state.attr, |
| 1704 | &dev_attr_connection_fsm_state.attr, |
| 1705 | &dev_attr_max_tx_buffer_used.attr, |
| 1706 | &dev_attr_max_chained_skbs.attr, |
| 1707 | &dev_attr_tx_single_write_ops.attr, |
| 1708 | &dev_attr_tx_multi_write_ops.attr, |
| 1709 | &dev_attr_netto_bytes.attr, |
| 1710 | &dev_attr_max_tx_io_time.attr, |
| 1711 | &dev_attr_tx_pending.attr, |
| 1712 | &dev_attr_tx_max_pending.attr, |
| 1713 | NULL, |
| 1714 | }; |
| 1715 | |
| 1716 | static struct attribute_group netiucv_stat_attr_group = { |
| 1717 | .name = "stats", |
| 1718 | .attrs = netiucv_stat_attrs, |
| 1719 | }; |
| 1720 | |
Martin Schwidefsky | d461462 | 2007-06-20 13:03:57 +0200 | [diff] [blame] | 1721 | static int netiucv_add_files(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1722 | { |
| 1723 | int ret; |
| 1724 | |
| 1725 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1726 | ret = sysfs_create_group(&dev->kobj, &netiucv_attr_group); |
| 1727 | if (ret) |
| 1728 | return ret; |
| 1729 | ret = sysfs_create_group(&dev->kobj, &netiucv_stat_attr_group); |
| 1730 | if (ret) |
| 1731 | sysfs_remove_group(&dev->kobj, &netiucv_attr_group); |
| 1732 | return ret; |
| 1733 | } |
| 1734 | |
Martin Schwidefsky | d461462 | 2007-06-20 13:03:57 +0200 | [diff] [blame] | 1735 | static void netiucv_remove_files(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1736 | { |
| 1737 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1738 | sysfs_remove_group(&dev->kobj, &netiucv_stat_attr_group); |
| 1739 | sysfs_remove_group(&dev->kobj, &netiucv_attr_group); |
| 1740 | } |
| 1741 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1742 | static int netiucv_register_device(struct net_device *ndev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1743 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1744 | struct netiucv_priv *priv = netdev_priv(ndev); |
Eric Sesterhenn | 88abaab | 2006-03-24 03:15:31 -0800 | [diff] [blame] | 1745 | struct device *dev = kzalloc(sizeof(struct device), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | int ret; |
| 1747 | |
| 1748 | |
| 1749 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1750 | |
| 1751 | if (dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | snprintf(dev->bus_id, BUS_ID_SIZE, "net%s", ndev->name); |
| 1753 | dev->bus = &iucv_bus; |
| 1754 | dev->parent = iucv_root; |
| 1755 | /* |
| 1756 | * The release function could be called after the |
| 1757 | * module has been unloaded. It's _only_ task is to |
| 1758 | * free the struct. Therefore, we specify kfree() |
| 1759 | * directly here. (Probably a little bit obfuscating |
| 1760 | * but legitime ...). |
| 1761 | */ |
| 1762 | dev->release = (void (*)(struct device *))kfree; |
| 1763 | dev->driver = &netiucv_driver; |
| 1764 | } else |
| 1765 | return -ENOMEM; |
| 1766 | |
| 1767 | ret = device_register(dev); |
| 1768 | |
| 1769 | if (ret) |
| 1770 | return ret; |
| 1771 | ret = netiucv_add_files(dev); |
| 1772 | if (ret) |
| 1773 | goto out_unreg; |
| 1774 | priv->dev = dev; |
| 1775 | dev->driver_data = priv; |
| 1776 | return 0; |
| 1777 | |
| 1778 | out_unreg: |
| 1779 | device_unregister(dev); |
| 1780 | return ret; |
| 1781 | } |
| 1782 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1783 | static void netiucv_unregister_device(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | { |
| 1785 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1786 | netiucv_remove_files(dev); |
| 1787 | device_unregister(dev); |
| 1788 | } |
| 1789 | |
| 1790 | /** |
| 1791 | * Allocate and initialize a new connection structure. |
| 1792 | * Add it to the list of netiucv connections; |
| 1793 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1794 | static struct iucv_connection *netiucv_new_connection(struct net_device *dev, |
| 1795 | char *username) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1797 | struct iucv_connection *conn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1799 | conn = kzalloc(sizeof(*conn), GFP_KERNEL); |
| 1800 | if (!conn) |
| 1801 | goto out; |
| 1802 | skb_queue_head_init(&conn->collect_queue); |
| 1803 | skb_queue_head_init(&conn->commit_queue); |
| 1804 | spin_lock_init(&conn->collect_lock); |
| 1805 | conn->max_buffsize = NETIUCV_BUFSIZE_DEFAULT; |
| 1806 | conn->netdev = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1808 | conn->rx_buff = alloc_skb(conn->max_buffsize, GFP_KERNEL | GFP_DMA); |
| 1809 | if (!conn->rx_buff) |
| 1810 | goto out_conn; |
| 1811 | conn->tx_buff = alloc_skb(conn->max_buffsize, GFP_KERNEL | GFP_DMA); |
| 1812 | if (!conn->tx_buff) |
| 1813 | goto out_rx; |
| 1814 | conn->fsm = init_fsm("netiucvconn", conn_state_names, |
| 1815 | conn_event_names, NR_CONN_STATES, |
| 1816 | NR_CONN_EVENTS, conn_fsm, CONN_FSM_LEN, |
| 1817 | GFP_KERNEL); |
| 1818 | if (!conn->fsm) |
| 1819 | goto out_tx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1821 | fsm_settimer(conn->fsm, &conn->timer); |
| 1822 | fsm_newstate(conn->fsm, CONN_STATE_INVALID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1824 | if (username) { |
| 1825 | memcpy(conn->userid, username, 9); |
| 1826 | fsm_newstate(conn->fsm, CONN_STATE_STOPPED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1828 | |
| 1829 | write_lock_bh(&iucv_connection_rwlock); |
| 1830 | list_add_tail(&conn->list, &iucv_connection_list); |
| 1831 | write_unlock_bh(&iucv_connection_rwlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1832 | return conn; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1833 | |
| 1834 | out_tx: |
| 1835 | kfree_skb(conn->tx_buff); |
| 1836 | out_rx: |
| 1837 | kfree_skb(conn->rx_buff); |
| 1838 | out_conn: |
| 1839 | kfree(conn); |
| 1840 | out: |
| 1841 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1842 | } |
| 1843 | |
| 1844 | /** |
| 1845 | * Release a connection structure and remove it from the |
| 1846 | * list of netiucv connections. |
| 1847 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1848 | static void netiucv_remove_connection(struct iucv_connection *conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1850 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1851 | write_lock_bh(&iucv_connection_rwlock); |
| 1852 | list_del_init(&conn->list); |
| 1853 | write_unlock_bh(&iucv_connection_rwlock); |
Ursula Braun | 0be4ace | 2007-05-02 15:18:44 +0200 | [diff] [blame] | 1854 | fsm_deltimer(&conn->timer); |
| 1855 | netiucv_purge_skb_queue(&conn->collect_queue); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1856 | if (conn->path) { |
| 1857 | iucv_path_sever(conn->path, iucvMagic); |
| 1858 | kfree(conn->path); |
| 1859 | conn->path = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | } |
Ursula Braun | 0be4ace | 2007-05-02 15:18:44 +0200 | [diff] [blame] | 1861 | netiucv_purge_skb_queue(&conn->commit_queue); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1862 | kfree_fsm(conn->fsm); |
| 1863 | kfree_skb(conn->rx_buff); |
| 1864 | kfree_skb(conn->tx_buff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | } |
| 1866 | |
| 1867 | /** |
| 1868 | * Release everything of a net device. |
| 1869 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1870 | static void netiucv_free_netdevice(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1872 | struct netiucv_priv *privptr = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | |
| 1874 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1875 | |
| 1876 | if (!dev) |
| 1877 | return; |
| 1878 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | if (privptr) { |
| 1880 | if (privptr->conn) |
| 1881 | netiucv_remove_connection(privptr->conn); |
| 1882 | if (privptr->fsm) |
| 1883 | kfree_fsm(privptr->fsm); |
| 1884 | privptr->conn = NULL; privptr->fsm = NULL; |
| 1885 | /* privptr gets freed by free_netdev() */ |
| 1886 | } |
| 1887 | free_netdev(dev); |
| 1888 | } |
| 1889 | |
| 1890 | /** |
| 1891 | * Initialize a net device. (Called from kernel in alloc_netdev()) |
| 1892 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1893 | static void netiucv_setup_netdevice(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1894 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | dev->mtu = NETIUCV_MTU_DEFAULT; |
| 1896 | dev->hard_start_xmit = netiucv_tx; |
| 1897 | dev->open = netiucv_open; |
| 1898 | dev->stop = netiucv_close; |
| 1899 | dev->get_stats = netiucv_stats; |
| 1900 | dev->change_mtu = netiucv_change_mtu; |
| 1901 | dev->destructor = netiucv_free_netdevice; |
| 1902 | dev->hard_header_len = NETIUCV_HDRLEN; |
| 1903 | dev->addr_len = 0; |
| 1904 | dev->type = ARPHRD_SLIP; |
| 1905 | dev->tx_queue_len = NETIUCV_QUEUELEN_DEFAULT; |
| 1906 | dev->flags = IFF_POINTOPOINT | IFF_NOARP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1907 | } |
| 1908 | |
| 1909 | /** |
| 1910 | * Allocate and initialize everything of a net device. |
| 1911 | */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1912 | static struct net_device *netiucv_init_netdevice(char *username) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | { |
| 1914 | struct netiucv_priv *privptr; |
| 1915 | struct net_device *dev; |
| 1916 | |
| 1917 | dev = alloc_netdev(sizeof(struct netiucv_priv), "iucv%d", |
| 1918 | netiucv_setup_netdevice); |
| 1919 | if (!dev) |
| 1920 | return NULL; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1921 | if (dev_alloc_name(dev, dev->name) < 0) |
| 1922 | goto out_netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1924 | privptr = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | privptr->fsm = init_fsm("netiucvdev", dev_state_names, |
| 1926 | dev_event_names, NR_DEV_STATES, NR_DEV_EVENTS, |
| 1927 | dev_fsm, DEV_FSM_LEN, GFP_KERNEL); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1928 | if (!privptr->fsm) |
| 1929 | goto out_netdev; |
| 1930 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | privptr->conn = netiucv_new_connection(dev, username); |
| 1932 | if (!privptr->conn) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | IUCV_DBF_TEXT(setup, 2, "NULL from netiucv_new_connection\n"); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1934 | goto out_fsm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1935 | } |
| 1936 | fsm_newstate(privptr->fsm, DEV_STATE_STOPPED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | return dev; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1938 | |
| 1939 | out_fsm: |
| 1940 | kfree_fsm(privptr->fsm); |
| 1941 | out_netdev: |
| 1942 | free_netdev(dev); |
| 1943 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | } |
| 1945 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1946 | static ssize_t conn_write(struct device_driver *drv, |
| 1947 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1949 | const char *p; |
Frank Pavlic | 16a83b3 | 2006-09-15 16:25:19 +0200 | [diff] [blame] | 1950 | char username[9]; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1951 | int i, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | struct net_device *dev; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1953 | struct netiucv_priv *priv; |
| 1954 | struct iucv_connection *cp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | |
| 1956 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 1957 | if (count>9) { |
| 1958 | PRINT_WARN("netiucv: username too long (%d)!\n", (int)count); |
| 1959 | IUCV_DBF_TEXT(setup, 2, "conn_write: too long\n"); |
| 1960 | return -EINVAL; |
| 1961 | } |
| 1962 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1963 | for (i = 0, p = buf; i < 8 && *p; i++, p++) { |
| 1964 | if (isalnum(*p) || *p == '$') { |
| 1965 | username[i] = toupper(*p); |
| 1966 | continue; |
| 1967 | } |
| 1968 | if (*p == '\n') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1969 | /* trailing lf, grr */ |
| 1970 | break; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1971 | PRINT_WARN("netiucv: Invalid character in username!\n"); |
| 1972 | IUCV_DBF_TEXT_(setup, 2, |
| 1973 | "conn_write: invalid character %c\n", *p); |
| 1974 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1976 | while (i < 8) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | username[i++] = ' '; |
Frank Pavlic | 16a83b3 | 2006-09-15 16:25:19 +0200 | [diff] [blame] | 1978 | username[8] = '\0'; |
| 1979 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1980 | read_lock_bh(&iucv_connection_rwlock); |
| 1981 | list_for_each_entry(cp, &iucv_connection_list, list) { |
| 1982 | if (!strncmp(username, cp->userid, 9)) { |
| 1983 | read_unlock_bh(&iucv_connection_rwlock); |
| 1984 | PRINT_WARN("netiucv: Connection to %s already " |
| 1985 | "exists\n", username); |
| 1986 | return -EEXIST; |
| 1987 | } |
Frank Pavlic | 16a83b3 | 2006-09-15 16:25:19 +0200 | [diff] [blame] | 1988 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1989 | read_unlock_bh(&iucv_connection_rwlock); |
| 1990 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1991 | dev = netiucv_init_netdevice(username); |
| 1992 | if (!dev) { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 1993 | PRINT_WARN("netiucv: Could not allocate network device " |
| 1994 | "structure for user '%s'\n", |
| 1995 | netiucv_printname(username)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | IUCV_DBF_TEXT(setup, 2, "NULL from netiucv_init_netdevice\n"); |
| 1997 | return -ENODEV; |
| 1998 | } |
| 1999 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2000 | rc = netiucv_register_device(dev); |
| 2001 | if (rc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2002 | IUCV_DBF_TEXT_(setup, 2, |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2003 | "ret %d from netiucv_register_device\n", rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2004 | goto out_free_ndev; |
| 2005 | } |
| 2006 | |
| 2007 | /* sysfs magic */ |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2008 | priv = netdev_priv(dev); |
| 2009 | SET_NETDEV_DEV(dev, priv->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2011 | rc = register_netdev(dev); |
| 2012 | if (rc) |
| 2013 | goto out_unreg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | |
| 2015 | PRINT_INFO("%s: '%s'\n", dev->name, netiucv_printname(username)); |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 2016 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | return count; |
| 2018 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2019 | out_unreg: |
| 2020 | netiucv_unregister_device(priv->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2021 | out_free_ndev: |
| 2022 | PRINT_WARN("netiucv: Could not register '%s'\n", dev->name); |
| 2023 | IUCV_DBF_TEXT(setup, 2, "conn_write: could not register\n"); |
| 2024 | netiucv_free_netdevice(dev); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2025 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2026 | } |
| 2027 | |
Heiko Carstens | 2b67fc4 | 2007-02-05 21:16:47 +0100 | [diff] [blame] | 2028 | static DRIVER_ATTR(connection, 0200, NULL, conn_write); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2029 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2030 | static ssize_t remove_write (struct device_driver *drv, |
| 2031 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2033 | struct iucv_connection *cp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | struct net_device *ndev; |
| 2035 | struct netiucv_priv *priv; |
| 2036 | struct device *dev; |
| 2037 | char name[IFNAMSIZ]; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2038 | const char *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | int i; |
| 2040 | |
| 2041 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
| 2042 | |
| 2043 | if (count >= IFNAMSIZ) |
Frank Pavlic | 16a83b3 | 2006-09-15 16:25:19 +0200 | [diff] [blame] | 2044 | count = IFNAMSIZ - 1;; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2045 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2046 | for (i = 0, p = buf; i < count && *p; i++, p++) { |
| 2047 | if (*p == '\n' || *p == ' ') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | /* trailing lf, grr */ |
| 2049 | break; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2050 | name[i] = *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | } |
| 2052 | name[i] = '\0'; |
| 2053 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2054 | read_lock_bh(&iucv_connection_rwlock); |
| 2055 | list_for_each_entry(cp, &iucv_connection_list, list) { |
| 2056 | ndev = cp->netdev; |
| 2057 | priv = netdev_priv(ndev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2058 | dev = priv->dev; |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2059 | if (strncmp(name, ndev->name, count)) |
| 2060 | continue; |
| 2061 | read_unlock_bh(&iucv_connection_rwlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | if (ndev->flags & (IFF_UP | IFF_RUNNING)) { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2063 | PRINT_WARN("netiucv: net device %s active with peer " |
| 2064 | "%s\n", ndev->name, priv->conn->userid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | PRINT_WARN("netiucv: %s cannot be removed\n", |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2066 | ndev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | IUCV_DBF_TEXT(data, 2, "remove_write: still active\n"); |
| 2068 | return -EBUSY; |
| 2069 | } |
| 2070 | unregister_netdev(ndev); |
| 2071 | netiucv_unregister_device(dev); |
| 2072 | return count; |
| 2073 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2074 | read_unlock_bh(&iucv_connection_rwlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2075 | PRINT_WARN("netiucv: net device %s unknown\n", name); |
| 2076 | IUCV_DBF_TEXT(data, 2, "remove_write: unknown device\n"); |
| 2077 | return -EINVAL; |
| 2078 | } |
| 2079 | |
Heiko Carstens | 2b67fc4 | 2007-02-05 21:16:47 +0100 | [diff] [blame] | 2080 | static DRIVER_ATTR(remove, 0200, NULL, remove_write); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2081 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2082 | static struct attribute * netiucv_drv_attrs[] = { |
| 2083 | &driver_attr_connection.attr, |
| 2084 | &driver_attr_remove.attr, |
| 2085 | NULL, |
| 2086 | }; |
| 2087 | |
| 2088 | static struct attribute_group netiucv_drv_attr_group = { |
| 2089 | .attrs = netiucv_drv_attrs, |
| 2090 | }; |
| 2091 | |
| 2092 | static void netiucv_banner(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2093 | { |
Heiko Carstens | e018ba1 | 2006-02-01 03:06:31 -0800 | [diff] [blame] | 2094 | PRINT_INFO("NETIUCV driver initialized\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | } |
| 2096 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2097 | static void __exit netiucv_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2098 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2099 | struct iucv_connection *cp; |
| 2100 | struct net_device *ndev; |
| 2101 | struct netiucv_priv *priv; |
| 2102 | struct device *dev; |
| 2103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2105 | while (!list_empty(&iucv_connection_list)) { |
| 2106 | cp = list_entry(iucv_connection_list.next, |
| 2107 | struct iucv_connection, list); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2108 | ndev = cp->netdev; |
| 2109 | priv = netdev_priv(ndev); |
| 2110 | dev = priv->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | |
| 2112 | unregister_netdev(ndev); |
| 2113 | netiucv_unregister_device(dev); |
| 2114 | } |
| 2115 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2116 | sysfs_remove_group(&netiucv_driver.kobj, &netiucv_drv_attr_group); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2117 | driver_unregister(&netiucv_driver); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2118 | iucv_unregister(&netiucv_handler, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2119 | iucv_unregister_dbf_views(); |
| 2120 | |
| 2121 | PRINT_INFO("NETIUCV driver unloaded\n"); |
| 2122 | return; |
| 2123 | } |
| 2124 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2125 | static int __init netiucv_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | { |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2127 | int rc; |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 2128 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2129 | rc = iucv_register_dbf_views(); |
| 2130 | if (rc) |
| 2131 | goto out; |
| 2132 | rc = iucv_register(&netiucv_handler, 1); |
| 2133 | if (rc) |
| 2134 | goto out_dbf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2135 | IUCV_DBF_TEXT(trace, 3, __FUNCTION__); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2136 | rc = driver_register(&netiucv_driver); |
| 2137 | if (rc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2138 | PRINT_ERR("NETIUCV: failed to register driver.\n"); |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2139 | IUCV_DBF_TEXT_(setup, 2, "ret %d from driver_register\n", rc); |
| 2140 | goto out_iucv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | } |
| 2142 | |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2143 | rc = sysfs_create_group(&netiucv_driver.kobj, &netiucv_drv_attr_group); |
| 2144 | if (rc) { |
| 2145 | PRINT_ERR("NETIUCV: failed to add driver attributes.\n"); |
| 2146 | IUCV_DBF_TEXT_(setup, 2, |
| 2147 | "ret %d - netiucv_drv_attr_group\n", rc); |
| 2148 | goto out_driver; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2149 | } |
Martin Schwidefsky | eebce38 | 2007-02-08 13:50:33 -0800 | [diff] [blame] | 2150 | netiucv_banner(); |
| 2151 | return rc; |
| 2152 | |
| 2153 | out_driver: |
| 2154 | driver_unregister(&netiucv_driver); |
| 2155 | out_iucv: |
| 2156 | iucv_unregister(&netiucv_handler, 1); |
| 2157 | out_dbf: |
| 2158 | iucv_unregister_dbf_views(); |
| 2159 | out: |
| 2160 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | } |
Jeff Garzik | e82b0f2 | 2006-05-26 21:58:38 -0400 | [diff] [blame] | 2162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | module_init(netiucv_init); |
| 2164 | module_exit(netiucv_exit); |
| 2165 | MODULE_LICENSE("GPL"); |