Commit | Line | Data |
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1da177e4 LT |
1 | #include <linux/kernel.h> |
2 | #include <linux/string.h> | |
3 | #include <linux/timer.h> | |
4 | #include <linux/init.h> | |
5 | #include <linux/bitops.h> | |
4fc268d2 | 6 | #include <linux/capability.h> |
1da177e4 LT |
7 | #include <linux/seq_file.h> |
8 | ||
9 | /* We are an ethernet device */ | |
10 | #include <linux/if_ether.h> | |
11 | #include <linux/netdevice.h> | |
12 | #include <linux/etherdevice.h> | |
13 | #include <net/sock.h> | |
14 | #include <linux/skbuff.h> | |
15 | #include <linux/ip.h> | |
16 | #include <asm/byteorder.h> | |
17 | #include <asm/uaccess.h> | |
18 | #include <net/checksum.h> /* for ip_fast_csum() */ | |
19 | #include <net/arp.h> | |
20 | #include <net/dst.h> | |
21 | #include <linux/proc_fs.h> | |
22 | ||
23 | /* And atm device */ | |
24 | #include <linux/atmdev.h> | |
25 | #include <linux/atmlec.h> | |
26 | #include <linux/atmmpc.h> | |
27 | /* Modular too */ | |
1da177e4 LT |
28 | #include <linux/module.h> |
29 | ||
30 | #include "lec.h" | |
31 | #include "mpc.h" | |
32 | #include "resources.h" | |
33 | ||
34 | /* | |
f7d57453 | 35 | * mpc.c: Implementation of MPOA client kernel part |
1da177e4 LT |
36 | */ |
37 | ||
38 | #if 0 | |
39 | #define dprintk printk /* debug */ | |
40 | #else | |
41 | #define dprintk(format,args...) | |
42 | #endif | |
43 | ||
44 | #if 0 | |
45 | #define ddprintk printk /* more debug */ | |
46 | #else | |
47 | #define ddprintk(format,args...) | |
48 | #endif | |
49 | ||
50 | ||
51 | ||
52 | #define MPOA_TAG_LEN 4 | |
53 | ||
54 | /* mpc_daemon -> kernel */ | |
55 | static void MPOA_trigger_rcvd (struct k_message *msg, struct mpoa_client *mpc); | |
56 | static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc); | |
57 | static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); | |
58 | static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); | |
59 | static void mps_death(struct k_message *msg, struct mpoa_client *mpc); | |
60 | static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action); | |
61 | static void MPOA_cache_impos_rcvd(struct k_message *msg, struct mpoa_client *mpc); | |
62 | static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); | |
63 | static void set_mps_mac_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); | |
64 | ||
cba5cbd1 DH |
65 | static const uint8_t *copy_macs(struct mpoa_client *mpc, |
66 | const uint8_t *router_mac, | |
67 | const uint8_t *tlvs, uint8_t mps_macs, | |
68 | uint8_t device_type); | |
1da177e4 LT |
69 | static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry); |
70 | ||
cba5cbd1 | 71 | static void send_set_mps_ctrl_addr(const char *addr, struct mpoa_client *mpc); |
1da177e4 LT |
72 | static void mpoad_close(struct atm_vcc *vcc); |
73 | static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb); | |
74 | ||
75 | static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb); | |
3c805a22 SH |
76 | static netdev_tx_t mpc_send_packet(struct sk_buff *skb, |
77 | struct net_device *dev); | |
1da177e4 LT |
78 | static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev); |
79 | static void mpc_timer_refresh(void); | |
80 | static void mpc_cache_check( unsigned long checking_time ); | |
81 | ||
82 | static struct llc_snap_hdr llc_snap_mpoa_ctrl = { | |
83 | 0xaa, 0xaa, 0x03, | |
84 | {0x00, 0x00, 0x5e}, | |
85 | {0x00, 0x03} /* For MPOA control PDUs */ | |
f7d57453 | 86 | }; |
1da177e4 LT |
87 | static struct llc_snap_hdr llc_snap_mpoa_data = { |
88 | 0xaa, 0xaa, 0x03, | |
89 | {0x00, 0x00, 0x00}, | |
90 | {0x08, 0x00} /* This is for IP PDUs only */ | |
f7d57453 | 91 | }; |
1da177e4 LT |
92 | static struct llc_snap_hdr llc_snap_mpoa_data_tagged = { |
93 | 0xaa, 0xaa, 0x03, | |
94 | {0x00, 0x00, 0x00}, | |
95 | {0x88, 0x4c} /* This is for tagged data PDUs */ | |
f7d57453 | 96 | }; |
1da177e4 LT |
97 | |
98 | static struct notifier_block mpoa_notifier = { | |
99 | mpoa_event_listener, | |
100 | NULL, | |
101 | 0 | |
102 | }; | |
103 | ||
1da177e4 LT |
104 | struct mpoa_client *mpcs = NULL; /* FIXME */ |
105 | static struct atm_mpoa_qos *qos_head = NULL; | |
8d06afab | 106 | static DEFINE_TIMER(mpc_timer, NULL, 0, 0); |
1da177e4 LT |
107 | |
108 | ||
109 | static struct mpoa_client *find_mpc_by_itfnum(int itf) | |
110 | { | |
111 | struct mpoa_client *mpc; | |
f7d57453 | 112 | |
1da177e4 LT |
113 | mpc = mpcs; /* our global linked list */ |
114 | while (mpc != NULL) { | |
115 | if (mpc->dev_num == itf) | |
116 | return mpc; | |
f7d57453 | 117 | mpc = mpc->next; |
1da177e4 LT |
118 | } |
119 | ||
120 | return NULL; /* not found */ | |
121 | } | |
122 | ||
123 | static struct mpoa_client *find_mpc_by_vcc(struct atm_vcc *vcc) | |
124 | { | |
125 | struct mpoa_client *mpc; | |
f7d57453 | 126 | |
1da177e4 LT |
127 | mpc = mpcs; /* our global linked list */ |
128 | while (mpc != NULL) { | |
129 | if (mpc->mpoad_vcc == vcc) | |
130 | return mpc; | |
131 | mpc = mpc->next; | |
132 | } | |
133 | ||
134 | return NULL; /* not found */ | |
135 | } | |
136 | ||
137 | static struct mpoa_client *find_mpc_by_lec(struct net_device *dev) | |
138 | { | |
139 | struct mpoa_client *mpc; | |
f7d57453 | 140 | |
1da177e4 LT |
141 | mpc = mpcs; /* our global linked list */ |
142 | while (mpc != NULL) { | |
143 | if (mpc->dev == dev) | |
144 | return mpc; | |
145 | mpc = mpc->next; | |
146 | } | |
147 | ||
148 | return NULL; /* not found */ | |
149 | } | |
150 | ||
151 | /* | |
152 | * Functions for managing QoS list | |
153 | */ | |
154 | ||
155 | /* | |
156 | * Overwrites the old entry or makes a new one. | |
157 | */ | |
30d492da | 158 | struct atm_mpoa_qos *atm_mpoa_add_qos(__be32 dst_ip, struct atm_qos *qos) |
1da177e4 LT |
159 | { |
160 | struct atm_mpoa_qos *entry; | |
161 | ||
162 | entry = atm_mpoa_search_qos(dst_ip); | |
163 | if (entry != NULL) { | |
164 | entry->qos = *qos; | |
165 | return entry; | |
166 | } | |
167 | ||
168 | entry = kmalloc(sizeof(struct atm_mpoa_qos), GFP_KERNEL); | |
169 | if (entry == NULL) { | |
170 | printk("mpoa: atm_mpoa_add_qos: out of memory\n"); | |
171 | return entry; | |
172 | } | |
173 | ||
174 | entry->ipaddr = dst_ip; | |
175 | entry->qos = *qos; | |
176 | ||
177 | entry->next = qos_head; | |
178 | qos_head = entry; | |
179 | ||
180 | return entry; | |
181 | } | |
182 | ||
30d492da | 183 | struct atm_mpoa_qos *atm_mpoa_search_qos(__be32 dst_ip) |
1da177e4 LT |
184 | { |
185 | struct atm_mpoa_qos *qos; | |
186 | ||
187 | qos = qos_head; | |
188 | while( qos != NULL ){ | |
189 | if(qos->ipaddr == dst_ip) { | |
190 | break; | |
191 | } | |
192 | qos = qos->next; | |
193 | } | |
194 | ||
195 | return qos; | |
f7d57453 | 196 | } |
1da177e4 LT |
197 | |
198 | /* | |
199 | * Returns 0 for failure | |
200 | */ | |
201 | int atm_mpoa_delete_qos(struct atm_mpoa_qos *entry) | |
202 | { | |
203 | ||
204 | struct atm_mpoa_qos *curr; | |
205 | ||
206 | if (entry == NULL) return 0; | |
207 | if (entry == qos_head) { | |
208 | qos_head = qos_head->next; | |
209 | kfree(entry); | |
210 | return 1; | |
211 | } | |
212 | ||
213 | curr = qos_head; | |
214 | while (curr != NULL) { | |
215 | if (curr->next == entry) { | |
216 | curr->next = entry->next; | |
217 | kfree(entry); | |
218 | return 1; | |
219 | } | |
220 | curr = curr->next; | |
221 | } | |
222 | ||
223 | return 0; | |
224 | } | |
225 | ||
226 | /* this is buggered - we need locking for qos_head */ | |
227 | void atm_mpoa_disp_qos(struct seq_file *m) | |
228 | { | |
1da177e4 LT |
229 | struct atm_mpoa_qos *qos; |
230 | ||
231 | qos = qos_head; | |
232 | seq_printf(m, "QoS entries for shortcuts:\n"); | |
233 | seq_printf(m, "IP address\n TX:max_pcr pcr min_pcr max_cdv max_sdu\n RX:max_pcr pcr min_pcr max_cdv max_sdu\n"); | |
234 | ||
1da177e4 | 235 | while (qos != NULL) { |
21454aaa HH |
236 | seq_printf(m, "%pI4\n %-7d %-7d %-7d %-7d %-7d\n %-7d %-7d %-7d %-7d %-7d\n", |
237 | &qos->ipaddr, | |
1da177e4 LT |
238 | qos->qos.txtp.max_pcr, qos->qos.txtp.pcr, qos->qos.txtp.min_pcr, qos->qos.txtp.max_cdv, qos->qos.txtp.max_sdu, |
239 | qos->qos.rxtp.max_pcr, qos->qos.rxtp.pcr, qos->qos.rxtp.min_pcr, qos->qos.rxtp.max_cdv, qos->qos.rxtp.max_sdu); | |
240 | qos = qos->next; | |
241 | } | |
242 | } | |
243 | ||
244 | static struct net_device *find_lec_by_itfnum(int itf) | |
245 | { | |
246 | struct net_device *dev; | |
247 | char name[IFNAMSIZ]; | |
248 | ||
249 | sprintf(name, "lec%d", itf); | |
881d966b | 250 | dev = dev_get_by_name(&init_net, name); |
f7d57453 | 251 | |
1da177e4 LT |
252 | return dev; |
253 | } | |
254 | ||
255 | static struct mpoa_client *alloc_mpc(void) | |
256 | { | |
257 | struct mpoa_client *mpc; | |
258 | ||
0da974f4 | 259 | mpc = kzalloc(sizeof (struct mpoa_client), GFP_KERNEL); |
1da177e4 LT |
260 | if (mpc == NULL) |
261 | return NULL; | |
1da177e4 LT |
262 | rwlock_init(&mpc->ingress_lock); |
263 | rwlock_init(&mpc->egress_lock); | |
264 | mpc->next = mpcs; | |
265 | atm_mpoa_init_cache(mpc); | |
266 | ||
267 | mpc->parameters.mpc_p1 = MPC_P1; | |
268 | mpc->parameters.mpc_p2 = MPC_P2; | |
269 | memset(mpc->parameters.mpc_p3,0,sizeof(mpc->parameters.mpc_p3)); | |
270 | mpc->parameters.mpc_p4 = MPC_P4; | |
f7d57453 | 271 | mpc->parameters.mpc_p5 = MPC_P5; |
1da177e4 | 272 | mpc->parameters.mpc_p6 = MPC_P6; |
f7d57453 | 273 | |
1da177e4 | 274 | mpcs = mpc; |
f7d57453 | 275 | |
1da177e4 LT |
276 | return mpc; |
277 | } | |
278 | ||
279 | /* | |
280 | * | |
281 | * start_mpc() puts the MPC on line. All the packets destined | |
f7d57453 | 282 | * to the lec underneath us are now being monitored and |
1da177e4 LT |
283 | * shortcuts will be established. |
284 | * | |
285 | */ | |
286 | static void start_mpc(struct mpoa_client *mpc, struct net_device *dev) | |
287 | { | |
f7d57453 YH |
288 | |
289 | dprintk("mpoa: (%s) start_mpc:\n", mpc->dev->name); | |
788dee0a SH |
290 | if (!dev->netdev_ops) |
291 | printk("mpoa: (%s) start_mpc not starting\n", dev->name); | |
292 | else { | |
293 | mpc->old_ops = dev->netdev_ops; | |
294 | mpc->new_ops = *mpc->old_ops; | |
295 | mpc->new_ops.ndo_start_xmit = mpc_send_packet; | |
296 | dev->netdev_ops = &mpc->new_ops; | |
1da177e4 | 297 | } |
1da177e4 LT |
298 | } |
299 | ||
300 | static void stop_mpc(struct mpoa_client *mpc) | |
301 | { | |
788dee0a | 302 | struct net_device *dev = mpc->dev; |
f7d57453 | 303 | dprintk("mpoa: (%s) stop_mpc:", mpc->dev->name); |
1da177e4 LT |
304 | |
305 | /* Lets not nullify lec device's dev->hard_start_xmit */ | |
788dee0a | 306 | if (dev->netdev_ops != &mpc->new_ops) { |
1da177e4 LT |
307 | dprintk(" mpc already stopped, not fatal\n"); |
308 | return; | |
309 | } | |
310 | dprintk("\n"); | |
f7d57453 | 311 | |
788dee0a SH |
312 | dev->netdev_ops = mpc->old_ops; |
313 | mpc->old_ops = NULL; | |
314 | ||
315 | /* close_shortcuts(mpc); ??? FIXME */ | |
1da177e4 LT |
316 | } |
317 | ||
318 | static const char *mpoa_device_type_string(char type) __attribute__ ((unused)); | |
319 | ||
320 | static const char *mpoa_device_type_string(char type) | |
321 | { | |
322 | switch(type) { | |
323 | case NON_MPOA: | |
324 | return "non-MPOA device"; | |
325 | break; | |
326 | case MPS: | |
327 | return "MPS"; | |
328 | break; | |
329 | case MPC: | |
330 | return "MPC"; | |
331 | break; | |
332 | case MPS_AND_MPC: | |
333 | return "both MPS and MPC"; | |
334 | break; | |
335 | default: | |
336 | return "unspecified (non-MPOA) device"; | |
337 | break; | |
338 | } | |
339 | ||
340 | return ""; /* not reached */ | |
341 | } | |
342 | ||
343 | /* | |
b74ca3a8 WC |
344 | * lec device calls this via its netdev_priv(dev)->lane2_ops |
345 | * ->associate_indicator() when it sees a TLV in LE_ARP packet. | |
1da177e4 LT |
346 | * We fill in the pointer above when we see a LANE2 lec initializing |
347 | * See LANE2 spec 3.1.5 | |
348 | * | |
349 | * Quite a big and ugly function but when you look at it | |
350 | * all it does is to try to locate and parse MPOA Device | |
351 | * Type TLV. | |
352 | * We give our lec a pointer to this function and when the | |
353 | * lec sees a TLV it uses the pointer to call this function. | |
354 | * | |
355 | */ | |
cba5cbd1 DH |
356 | static void lane2_assoc_ind(struct net_device *dev, const u8 *mac_addr, |
357 | const u8 *tlvs, u32 sizeoftlvs) | |
1da177e4 LT |
358 | { |
359 | uint32_t type; | |
360 | uint8_t length, mpoa_device_type, number_of_mps_macs; | |
cba5cbd1 | 361 | const uint8_t *end_of_tlvs; |
1da177e4 | 362 | struct mpoa_client *mpc; |
f7d57453 | 363 | |
1da177e4 LT |
364 | mpoa_device_type = number_of_mps_macs = 0; /* silence gcc */ |
365 | dprintk("mpoa: (%s) lane2_assoc_ind: received TLV(s), ", dev->name); | |
366 | dprintk("total length of all TLVs %d\n", sizeoftlvs); | |
367 | mpc = find_mpc_by_lec(dev); /* Sampo-Fix: moved here from below */ | |
368 | if (mpc == NULL) { | |
369 | printk("mpoa: (%s) lane2_assoc_ind: no mpc\n", dev->name); | |
370 | return; | |
371 | } | |
372 | end_of_tlvs = tlvs + sizeoftlvs; | |
373 | while (end_of_tlvs - tlvs >= 5) { | |
374 | type = (tlvs[0] << 24) | (tlvs[1] << 16) | (tlvs[2] << 8) | tlvs[3]; | |
375 | length = tlvs[4]; | |
376 | tlvs += 5; | |
377 | dprintk(" type 0x%x length %02x\n", type, length); | |
378 | if (tlvs + length > end_of_tlvs) { | |
379 | printk("TLV value extends past its buffer, aborting parse\n"); | |
380 | return; | |
381 | } | |
f7d57453 | 382 | |
1da177e4 LT |
383 | if (type == 0) { |
384 | printk("mpoa: (%s) lane2_assoc_ind: TLV type was 0, returning\n", dev->name); | |
385 | return; | |
386 | } | |
387 | ||
388 | if (type != TLV_MPOA_DEVICE_TYPE) { | |
389 | tlvs += length; | |
390 | continue; /* skip other TLVs */ | |
391 | } | |
392 | mpoa_device_type = *tlvs++; | |
393 | number_of_mps_macs = *tlvs++; | |
394 | dprintk("mpoa: (%s) MPOA device type '%s', ", dev->name, mpoa_device_type_string(mpoa_device_type)); | |
395 | if (mpoa_device_type == MPS_AND_MPC && | |
396 | length < (42 + number_of_mps_macs*ETH_ALEN)) { /* :) */ | |
397 | printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", | |
398 | dev->name); | |
399 | continue; | |
400 | } | |
401 | if ((mpoa_device_type == MPS || mpoa_device_type == MPC) | |
402 | && length < 22 + number_of_mps_macs*ETH_ALEN) { | |
403 | printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", | |
404 | dev->name); | |
405 | continue; | |
406 | } | |
407 | if (mpoa_device_type != MPS && mpoa_device_type != MPS_AND_MPC) { | |
408 | dprintk("ignoring non-MPS device\n"); | |
409 | if (mpoa_device_type == MPC) tlvs += 20; | |
410 | continue; /* we are only interested in MPSs */ | |
411 | } | |
412 | if (number_of_mps_macs == 0 && mpoa_device_type == MPS_AND_MPC) { | |
413 | printk("\nmpoa: (%s) lane2_assoc_ind: MPS_AND_MPC has zero MACs\n", dev->name); | |
414 | continue; /* someone should read the spec */ | |
415 | } | |
416 | dprintk("this MPS has %d MAC addresses\n", number_of_mps_macs); | |
f7d57453 | 417 | |
1da177e4 LT |
418 | /* ok, now we can go and tell our daemon the control address of MPS */ |
419 | send_set_mps_ctrl_addr(tlvs, mpc); | |
f7d57453 | 420 | |
1da177e4 LT |
421 | tlvs = copy_macs(mpc, mac_addr, tlvs, number_of_mps_macs, mpoa_device_type); |
422 | if (tlvs == NULL) return; | |
423 | } | |
424 | if (end_of_tlvs - tlvs != 0) | |
425 | printk("mpoa: (%s) lane2_assoc_ind: ignoring %Zd bytes of trailing TLV carbage\n", | |
426 | dev->name, end_of_tlvs - tlvs); | |
427 | return; | |
428 | } | |
429 | ||
430 | /* | |
431 | * Store at least advertizing router's MAC address | |
432 | * plus the possible MAC address(es) to mpc->mps_macs. | |
433 | * For a freshly allocated MPOA client mpc->mps_macs == 0. | |
434 | */ | |
cba5cbd1 DH |
435 | static const uint8_t *copy_macs(struct mpoa_client *mpc, |
436 | const uint8_t *router_mac, | |
437 | const uint8_t *tlvs, uint8_t mps_macs, | |
438 | uint8_t device_type) | |
1da177e4 LT |
439 | { |
440 | int num_macs; | |
441 | num_macs = (mps_macs > 1) ? mps_macs : 1; | |
442 | ||
443 | if (mpc->number_of_mps_macs != num_macs) { /* need to reallocate? */ | |
444 | if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs); | |
445 | mpc->number_of_mps_macs = 0; | |
446 | mpc->mps_macs = kmalloc(num_macs*ETH_ALEN, GFP_KERNEL); | |
447 | if (mpc->mps_macs == NULL) { | |
448 | printk("mpoa: (%s) copy_macs: out of mem\n", mpc->dev->name); | |
449 | return NULL; | |
450 | } | |
451 | } | |
452 | memcpy(mpc->mps_macs, router_mac, ETH_ALEN); | |
453 | tlvs += 20; if (device_type == MPS_AND_MPC) tlvs += 20; | |
454 | if (mps_macs > 0) | |
455 | memcpy(mpc->mps_macs, tlvs, mps_macs*ETH_ALEN); | |
456 | tlvs += mps_macs*ETH_ALEN; | |
457 | mpc->number_of_mps_macs = num_macs; | |
458 | ||
459 | return tlvs; | |
460 | } | |
461 | ||
462 | static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc) | |
463 | { | |
464 | in_cache_entry *entry; | |
465 | struct iphdr *iph; | |
466 | char *buff; | |
30d492da | 467 | __be32 ipaddr = 0; |
1da177e4 LT |
468 | |
469 | static struct { | |
470 | struct llc_snap_hdr hdr; | |
30d492da | 471 | __be32 tag; |
1da177e4 LT |
472 | } tagged_llc_snap_hdr = { |
473 | {0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x88, 0x4c}}, | |
474 | 0 | |
475 | }; | |
476 | ||
477 | buff = skb->data + mpc->dev->hard_header_len; | |
478 | iph = (struct iphdr *)buff; | |
479 | ipaddr = iph->daddr; | |
480 | ||
f7d57453 | 481 | ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", mpc->dev->name, ipaddr); |
1da177e4 LT |
482 | |
483 | entry = mpc->in_ops->get(ipaddr, mpc); | |
484 | if (entry == NULL) { | |
485 | entry = mpc->in_ops->add_entry(ipaddr, mpc); | |
486 | if (entry != NULL) mpc->in_ops->put(entry); | |
487 | return 1; | |
488 | } | |
489 | if (mpc->in_ops->cache_hit(entry, mpc) != OPEN){ /* threshold not exceeded or VCC not ready */ | |
f7d57453 | 490 | ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", mpc->dev->name); |
1da177e4 LT |
491 | mpc->in_ops->put(entry); |
492 | return 1; | |
493 | } | |
494 | ||
f7d57453 | 495 | ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", mpc->dev->name); |
1da177e4 LT |
496 | /* MPOA spec A.1.4, MPOA client must decrement IP ttl at least by one */ |
497 | if (iph->ttl <= 1) { | |
f7d57453 | 498 | ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", mpc->dev->name, iph->ttl); |
1da177e4 LT |
499 | mpc->in_ops->put(entry); |
500 | return 1; | |
501 | } | |
502 | iph->ttl--; | |
503 | iph->check = 0; | |
504 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
505 | ||
506 | if (entry->ctrl_info.tag != 0) { | |
507 | ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", mpc->dev->name, entry->ctrl_info.tag); | |
508 | tagged_llc_snap_hdr.tag = entry->ctrl_info.tag; | |
509 | skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ | |
510 | skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */ | |
27d7ff46 ACM |
511 | skb_copy_to_linear_data(skb, &tagged_llc_snap_hdr, |
512 | sizeof(tagged_llc_snap_hdr)); | |
1da177e4 LT |
513 | } else { |
514 | skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ | |
515 | skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */ | |
27d7ff46 ACM |
516 | skb_copy_to_linear_data(skb, &llc_snap_mpoa_data, |
517 | sizeof(struct llc_snap_hdr)); | |
1da177e4 LT |
518 | } |
519 | ||
520 | atomic_add(skb->truesize, &sk_atm(entry->shortcut)->sk_wmem_alloc); | |
521 | ATM_SKB(skb)->atm_options = entry->shortcut->atm_options; | |
522 | entry->shortcut->send(entry->shortcut, skb); | |
523 | entry->packets_fwded++; | |
524 | mpc->in_ops->put(entry); | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
529 | /* | |
530 | * Probably needs some error checks and locking, not sure... | |
531 | */ | |
3c805a22 SH |
532 | static netdev_tx_t mpc_send_packet(struct sk_buff *skb, |
533 | struct net_device *dev) | |
1da177e4 | 534 | { |
1da177e4 LT |
535 | struct mpoa_client *mpc; |
536 | struct ethhdr *eth; | |
537 | int i = 0; | |
f7d57453 | 538 | |
1da177e4 LT |
539 | mpc = find_mpc_by_lec(dev); /* this should NEVER fail */ |
540 | if(mpc == NULL) { | |
541 | printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name); | |
542 | goto non_ip; | |
543 | } | |
544 | ||
545 | eth = (struct ethhdr *)skb->data; | |
546 | if (eth->h_proto != htons(ETH_P_IP)) | |
547 | goto non_ip; /* Multi-Protocol Over ATM :-) */ | |
548 | ||
1c9b7aa1 HX |
549 | /* Weed out funny packets (e.g., AF_PACKET or raw). */ |
550 | if (skb->len < ETH_HLEN + sizeof(struct iphdr)) | |
551 | goto non_ip; | |
552 | skb_set_network_header(skb, ETH_HLEN); | |
553 | if (skb->len < ETH_HLEN + ip_hdr(skb)->ihl * 4 || ip_hdr(skb)->ihl < 5) | |
554 | goto non_ip; | |
555 | ||
1da177e4 | 556 | while (i < mpc->number_of_mps_macs) { |
d3f4a687 | 557 | if (!compare_ether_addr(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN))) |
1da177e4 | 558 | if ( send_via_shortcut(skb, mpc) == 0 ) /* try shortcut */ |
ec634fe3 | 559 | return NETDEV_TX_OK; /* success! */ |
1da177e4 LT |
560 | i++; |
561 | } | |
562 | ||
563 | non_ip: | |
788dee0a | 564 | return mpc->old_ops->ndo_start_xmit(skb,dev); |
1da177e4 LT |
565 | } |
566 | ||
567 | static int atm_mpoa_vcc_attach(struct atm_vcc *vcc, void __user *arg) | |
568 | { | |
569 | int bytes_left; | |
570 | struct mpoa_client *mpc; | |
571 | struct atmmpc_ioc ioc_data; | |
572 | in_cache_entry *in_entry; | |
30d492da | 573 | __be32 ipaddr; |
1da177e4 LT |
574 | |
575 | bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmmpc_ioc)); | |
576 | if (bytes_left != 0) { | |
577 | printk("mpoa: mpc_vcc_attach: Short read (missed %d bytes) from userland\n", bytes_left); | |
578 | return -EFAULT; | |
579 | } | |
580 | ipaddr = ioc_data.ipaddr; | |
581 | if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF) | |
582 | return -EINVAL; | |
f7d57453 | 583 | |
1da177e4 LT |
584 | mpc = find_mpc_by_itfnum(ioc_data.dev_num); |
585 | if (mpc == NULL) | |
586 | return -EINVAL; | |
f7d57453 | 587 | |
1da177e4 LT |
588 | if (ioc_data.type == MPC_SOCKET_INGRESS) { |
589 | in_entry = mpc->in_ops->get(ipaddr, mpc); | |
590 | if (in_entry == NULL || in_entry->entry_state < INGRESS_RESOLVED) { | |
591 | printk("mpoa: (%s) mpc_vcc_attach: did not find RESOLVED entry from ingress cache\n", | |
592 | mpc->dev->name); | |
593 | if (in_entry != NULL) mpc->in_ops->put(in_entry); | |
594 | return -EINVAL; | |
595 | } | |
21454aaa HH |
596 | printk("mpoa: (%s) mpc_vcc_attach: attaching ingress SVC, entry = %pI4\n", |
597 | mpc->dev->name, &in_entry->ctrl_info.in_dst_ip); | |
1da177e4 LT |
598 | in_entry->shortcut = vcc; |
599 | mpc->in_ops->put(in_entry); | |
600 | } else { | |
601 | printk("mpoa: (%s) mpc_vcc_attach: attaching egress SVC\n", mpc->dev->name); | |
602 | } | |
603 | ||
604 | vcc->proto_data = mpc->dev; | |
605 | vcc->push = mpc_push; | |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
610 | /* | |
611 | * | |
612 | */ | |
613 | static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev) | |
614 | { | |
615 | struct mpoa_client *mpc; | |
616 | in_cache_entry *in_entry; | |
617 | eg_cache_entry *eg_entry; | |
f7d57453 | 618 | |
1da177e4 LT |
619 | mpc = find_mpc_by_lec(dev); |
620 | if (mpc == NULL) { | |
621 | printk("mpoa: (%s) mpc_vcc_close: close for unknown MPC\n", dev->name); | |
622 | return; | |
623 | } | |
624 | ||
625 | dprintk("mpoa: (%s) mpc_vcc_close:\n", dev->name); | |
626 | in_entry = mpc->in_ops->get_by_vcc(vcc, mpc); | |
627 | if (in_entry) { | |
21454aaa HH |
628 | dprintk("mpoa: (%s) mpc_vcc_close: ingress SVC closed ip = %pI4\n", |
629 | mpc->dev->name, &in_entry->ctrl_info.in_dst_ip); | |
1da177e4 LT |
630 | in_entry->shortcut = NULL; |
631 | mpc->in_ops->put(in_entry); | |
632 | } | |
633 | eg_entry = mpc->eg_ops->get_by_vcc(vcc, mpc); | |
634 | if (eg_entry) { | |
635 | dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", mpc->dev->name); | |
636 | eg_entry->shortcut = NULL; | |
637 | mpc->eg_ops->put(eg_entry); | |
638 | } | |
639 | ||
640 | if (in_entry == NULL && eg_entry == NULL) | |
641 | dprintk("mpoa: (%s) mpc_vcc_close: unused vcc closed\n", dev->name); | |
642 | ||
643 | return; | |
644 | } | |
645 | ||
646 | static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb) | |
647 | { | |
648 | struct net_device *dev = (struct net_device *)vcc->proto_data; | |
649 | struct sk_buff *new_skb; | |
650 | eg_cache_entry *eg; | |
651 | struct mpoa_client *mpc; | |
30d492da | 652 | __be32 tag; |
1da177e4 | 653 | char *tmp; |
f7d57453 | 654 | |
1da177e4 LT |
655 | ddprintk("mpoa: (%s) mpc_push:\n", dev->name); |
656 | if (skb == NULL) { | |
657 | dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", dev->name); | |
658 | mpc_vcc_close(vcc, dev); | |
659 | return; | |
660 | } | |
f7d57453 | 661 | |
1da177e4 LT |
662 | skb->dev = dev; |
663 | if (memcmp(skb->data, &llc_snap_mpoa_ctrl, sizeof(struct llc_snap_hdr)) == 0) { | |
664 | struct sock *sk = sk_atm(vcc); | |
665 | ||
666 | dprintk("mpoa: (%s) mpc_push: control packet arrived\n", dev->name); | |
667 | /* Pass control packets to daemon */ | |
668 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
669 | sk->sk_data_ready(sk, skb->len); | |
670 | return; | |
671 | } | |
672 | ||
673 | /* data coming over the shortcut */ | |
674 | atm_return(vcc, skb->truesize); | |
675 | ||
676 | mpc = find_mpc_by_lec(dev); | |
677 | if (mpc == NULL) { | |
678 | printk("mpoa: (%s) mpc_push: unknown MPC\n", dev->name); | |
679 | return; | |
680 | } | |
681 | ||
682 | if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */ | |
683 | ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", dev->name); | |
684 | ||
685 | } else if (memcmp(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */ | |
686 | printk("mpoa: (%s) mpc_push: non-tagged data packet arrived\n", dev->name); | |
687 | printk(" mpc_push: non-tagged data unsupported, purging\n"); | |
688 | dev_kfree_skb_any(skb); | |
689 | return; | |
690 | } else { | |
691 | printk("mpoa: (%s) mpc_push: garbage arrived, purging\n", dev->name); | |
692 | dev_kfree_skb_any(skb); | |
693 | return; | |
694 | } | |
695 | ||
696 | tmp = skb->data + sizeof(struct llc_snap_hdr); | |
30d492da | 697 | tag = *(__be32 *)tmp; |
1da177e4 LT |
698 | |
699 | eg = mpc->eg_ops->get_by_tag(tag, mpc); | |
700 | if (eg == NULL) { | |
701 | printk("mpoa: (%s) mpc_push: Didn't find egress cache entry, tag = %u\n", | |
702 | dev->name,tag); | |
703 | purge_egress_shortcut(vcc, NULL); | |
704 | dev_kfree_skb_any(skb); | |
705 | return; | |
706 | } | |
f7d57453 | 707 | |
1da177e4 LT |
708 | /* |
709 | * See if ingress MPC is using shortcut we opened as a return channel. | |
710 | * This means we have a bi-directional vcc opened by us. | |
f7d57453 | 711 | */ |
1da177e4 LT |
712 | if (eg->shortcut == NULL) { |
713 | eg->shortcut = vcc; | |
714 | printk("mpoa: (%s) mpc_push: egress SVC in use\n", dev->name); | |
715 | } | |
716 | ||
717 | skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); /* get rid of LLC/SNAP header */ | |
718 | new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); /* LLC/SNAP is shorter than MAC header :( */ | |
719 | dev_kfree_skb_any(skb); | |
720 | if (new_skb == NULL){ | |
721 | mpc->eg_ops->put(eg); | |
722 | return; | |
723 | } | |
724 | skb_push(new_skb, eg->ctrl_info.DH_length); /* add MAC header */ | |
27d7ff46 ACM |
725 | skb_copy_to_linear_data(new_skb, eg->ctrl_info.DLL_header, |
726 | eg->ctrl_info.DH_length); | |
1da177e4 | 727 | new_skb->protocol = eth_type_trans(new_skb, dev); |
c1d2bbe1 | 728 | skb_reset_network_header(new_skb); |
1da177e4 | 729 | |
eddc9ec5 | 730 | eg->latest_ip_addr = ip_hdr(new_skb)->saddr; |
1da177e4 LT |
731 | eg->packets_rcvd++; |
732 | mpc->eg_ops->put(eg); | |
733 | ||
734 | memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data)); | |
735 | netif_rx(new_skb); | |
736 | ||
737 | return; | |
738 | } | |
739 | ||
740 | static struct atmdev_ops mpc_ops = { /* only send is required */ | |
741 | .close = mpoad_close, | |
742 | .send = msg_from_mpoad | |
743 | }; | |
744 | ||
745 | static struct atm_dev mpc_dev = { | |
746 | .ops = &mpc_ops, | |
747 | .type = "mpc", | |
748 | .number = 42, | |
4ef8d0ae | 749 | .lock = __SPIN_LOCK_UNLOCKED(mpc_dev.lock) |
1da177e4 LT |
750 | /* members not explicitly initialised will be 0 */ |
751 | }; | |
752 | ||
753 | static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg) | |
754 | { | |
755 | struct mpoa_client *mpc; | |
756 | struct lec_priv *priv; | |
757 | int err; | |
f7d57453 | 758 | |
1da177e4 LT |
759 | if (mpcs == NULL) { |
760 | init_timer(&mpc_timer); | |
761 | mpc_timer_refresh(); | |
762 | ||
763 | /* This lets us now how our LECs are doing */ | |
764 | err = register_netdevice_notifier(&mpoa_notifier); | |
765 | if (err < 0) { | |
766 | del_timer(&mpc_timer); | |
767 | return err; | |
768 | } | |
769 | } | |
f7d57453 | 770 | |
1da177e4 LT |
771 | mpc = find_mpc_by_itfnum(arg); |
772 | if (mpc == NULL) { | |
773 | dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", arg); | |
774 | mpc = alloc_mpc(); | |
775 | if (mpc == NULL) | |
776 | return -ENOMEM; | |
777 | mpc->dev_num = arg; | |
778 | mpc->dev = find_lec_by_itfnum(arg); /* NULL if there was no lec */ | |
779 | } | |
780 | if (mpc->mpoad_vcc) { | |
781 | printk("mpoa: mpoad_attach: mpoad is already present for itf %d\n", arg); | |
782 | return -EADDRINUSE; | |
783 | } | |
784 | ||
785 | if (mpc->dev) { /* check if the lec is LANE2 capable */ | |
524ad0a7 | 786 | priv = netdev_priv(mpc->dev); |
1da177e4 LT |
787 | if (priv->lane_version < 2) { |
788 | dev_put(mpc->dev); | |
789 | mpc->dev = NULL; | |
790 | } else | |
f7d57453 | 791 | priv->lane2_ops->associate_indicator = lane2_assoc_ind; |
1da177e4 LT |
792 | } |
793 | ||
794 | mpc->mpoad_vcc = vcc; | |
795 | vcc->dev = &mpc_dev; | |
796 | vcc_insert_socket(sk_atm(vcc)); | |
797 | set_bit(ATM_VF_META,&vcc->flags); | |
798 | set_bit(ATM_VF_READY,&vcc->flags); | |
799 | ||
800 | if (mpc->dev) { | |
801 | char empty[ATM_ESA_LEN]; | |
802 | memset(empty, 0, ATM_ESA_LEN); | |
f7d57453 | 803 | |
1da177e4 LT |
804 | start_mpc(mpc, mpc->dev); |
805 | /* set address if mpcd e.g. gets killed and restarted. | |
806 | * If we do not do it now we have to wait for the next LE_ARP | |
807 | */ | |
808 | if ( memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0 ) | |
809 | send_set_mps_ctrl_addr(mpc->mps_ctrl_addr, mpc); | |
810 | } | |
811 | ||
812 | __module_get(THIS_MODULE); | |
813 | return arg; | |
814 | } | |
815 | ||
cba5cbd1 | 816 | static void send_set_mps_ctrl_addr(const char *addr, struct mpoa_client *mpc) |
1da177e4 LT |
817 | { |
818 | struct k_message mesg; | |
819 | ||
820 | memcpy (mpc->mps_ctrl_addr, addr, ATM_ESA_LEN); | |
f7d57453 | 821 | |
1da177e4 LT |
822 | mesg.type = SET_MPS_CTRL_ADDR; |
823 | memcpy(mesg.MPS_ctrl, addr, ATM_ESA_LEN); | |
824 | msg_to_mpoad(&mesg, mpc); | |
825 | ||
826 | return; | |
827 | } | |
828 | ||
829 | static void mpoad_close(struct atm_vcc *vcc) | |
830 | { | |
831 | struct mpoa_client *mpc; | |
832 | struct sk_buff *skb; | |
833 | ||
834 | mpc = find_mpc_by_vcc(vcc); | |
835 | if (mpc == NULL) { | |
836 | printk("mpoa: mpoad_close: did not find MPC\n"); | |
837 | return; | |
838 | } | |
839 | if (!mpc->mpoad_vcc) { | |
840 | printk("mpoa: mpoad_close: close for non-present mpoad\n"); | |
841 | return; | |
842 | } | |
f7d57453 | 843 | |
1da177e4 LT |
844 | mpc->mpoad_vcc = NULL; |
845 | if (mpc->dev) { | |
524ad0a7 | 846 | struct lec_priv *priv = netdev_priv(mpc->dev); |
1da177e4 LT |
847 | priv->lane2_ops->associate_indicator = NULL; |
848 | stop_mpc(mpc); | |
849 | dev_put(mpc->dev); | |
850 | } | |
851 | ||
852 | mpc->in_ops->destroy_cache(mpc); | |
853 | mpc->eg_ops->destroy_cache(mpc); | |
854 | ||
855 | while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue))) { | |
856 | atm_return(vcc, skb->truesize); | |
857 | kfree_skb(skb); | |
858 | } | |
f7d57453 | 859 | |
1da177e4 LT |
860 | printk("mpoa: (%s) going down\n", |
861 | (mpc->dev) ? mpc->dev->name : "<unknown>"); | |
862 | module_put(THIS_MODULE); | |
863 | ||
864 | return; | |
865 | } | |
866 | ||
867 | /* | |
868 | * | |
869 | */ | |
870 | static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb) | |
871 | { | |
f7d57453 | 872 | |
1da177e4 LT |
873 | struct mpoa_client *mpc = find_mpc_by_vcc(vcc); |
874 | struct k_message *mesg = (struct k_message*)skb->data; | |
875 | atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); | |
f7d57453 | 876 | |
1da177e4 LT |
877 | if (mpc == NULL) { |
878 | printk("mpoa: msg_from_mpoad: no mpc found\n"); | |
879 | return 0; | |
880 | } | |
881 | dprintk("mpoa: (%s) msg_from_mpoad:", (mpc->dev) ? mpc->dev->name : "<unknown>"); | |
882 | switch(mesg->type) { | |
883 | case MPOA_RES_REPLY_RCVD: | |
884 | dprintk(" mpoa_res_reply_rcvd\n"); | |
885 | MPOA_res_reply_rcvd(mesg, mpc); | |
886 | break; | |
887 | case MPOA_TRIGGER_RCVD: | |
888 | dprintk(" mpoa_trigger_rcvd\n"); | |
889 | MPOA_trigger_rcvd(mesg, mpc); | |
890 | break; | |
891 | case INGRESS_PURGE_RCVD: | |
892 | dprintk(" nhrp_purge_rcvd\n"); | |
893 | ingress_purge_rcvd(mesg, mpc); | |
894 | break; | |
895 | case EGRESS_PURGE_RCVD: | |
896 | dprintk(" egress_purge_reply_rcvd\n"); | |
897 | egress_purge_rcvd(mesg, mpc); | |
898 | break; | |
899 | case MPS_DEATH: | |
900 | dprintk(" mps_death\n"); | |
901 | mps_death(mesg, mpc); | |
902 | break; | |
903 | case CACHE_IMPOS_RCVD: | |
904 | dprintk(" cache_impos_rcvd\n"); | |
905 | MPOA_cache_impos_rcvd(mesg, mpc); | |
906 | break; | |
907 | case SET_MPC_CTRL_ADDR: | |
908 | dprintk(" set_mpc_ctrl_addr\n"); | |
909 | set_mpc_ctrl_addr_rcvd(mesg, mpc); | |
910 | break; | |
911 | case SET_MPS_MAC_ADDR: | |
912 | dprintk(" set_mps_mac_addr\n"); | |
913 | set_mps_mac_addr_rcvd(mesg, mpc); | |
914 | break; | |
915 | case CLEAN_UP_AND_EXIT: | |
916 | dprintk(" clean_up_and_exit\n"); | |
917 | clean_up(mesg, mpc, DIE); | |
918 | break; | |
919 | case RELOAD: | |
920 | dprintk(" reload\n"); | |
921 | clean_up(mesg, mpc, RELOAD); | |
922 | break; | |
923 | case SET_MPC_PARAMS: | |
924 | dprintk(" set_mpc_params\n"); | |
925 | mpc->parameters = mesg->content.params; | |
926 | break; | |
927 | default: | |
928 | dprintk(" unknown message %d\n", mesg->type); | |
929 | break; | |
930 | } | |
931 | kfree_skb(skb); | |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
936 | /* Remember that this function may not do things that sleep */ | |
937 | int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc) | |
938 | { | |
939 | struct sk_buff *skb; | |
940 | struct sock *sk; | |
941 | ||
942 | if (mpc == NULL || !mpc->mpoad_vcc) { | |
943 | printk("mpoa: msg_to_mpoad: mesg %d to a non-existent mpoad\n", mesg->type); | |
944 | return -ENXIO; | |
945 | } | |
946 | ||
947 | skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); | |
948 | if (skb == NULL) | |
949 | return -ENOMEM; | |
950 | skb_put(skb, sizeof(struct k_message)); | |
27d7ff46 | 951 | skb_copy_to_linear_data(skb, mesg, sizeof(*mesg)); |
1da177e4 | 952 | atm_force_charge(mpc->mpoad_vcc, skb->truesize); |
f7d57453 | 953 | |
1da177e4 LT |
954 | sk = sk_atm(mpc->mpoad_vcc); |
955 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
956 | sk->sk_data_ready(sk, skb->len); | |
957 | ||
958 | return 0; | |
959 | } | |
960 | ||
961 | static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev_ptr) | |
962 | { | |
963 | struct net_device *dev; | |
964 | struct mpoa_client *mpc; | |
965 | struct lec_priv *priv; | |
966 | ||
967 | dev = (struct net_device *)dev_ptr; | |
e9dc8653 | 968 | |
721499e8 | 969 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
970 | return NOTIFY_DONE; |
971 | ||
1da177e4 LT |
972 | if (dev->name == NULL || strncmp(dev->name, "lec", 3)) |
973 | return NOTIFY_DONE; /* we are only interested in lec:s */ | |
f7d57453 | 974 | |
1da177e4 LT |
975 | switch (event) { |
976 | case NETDEV_REGISTER: /* a new lec device was allocated */ | |
524ad0a7 | 977 | priv = netdev_priv(dev); |
1da177e4 LT |
978 | if (priv->lane_version < 2) |
979 | break; | |
980 | priv->lane2_ops->associate_indicator = lane2_assoc_ind; | |
981 | mpc = find_mpc_by_itfnum(priv->itfnum); | |
982 | if (mpc == NULL) { | |
983 | dprintk("mpoa: mpoa_event_listener: allocating new mpc for %s\n", | |
984 | dev->name); | |
985 | mpc = alloc_mpc(); | |
986 | if (mpc == NULL) { | |
987 | printk("mpoa: mpoa_event_listener: no new mpc"); | |
988 | break; | |
989 | } | |
990 | } | |
991 | mpc->dev_num = priv->itfnum; | |
992 | mpc->dev = dev; | |
993 | dev_hold(dev); | |
994 | dprintk("mpoa: (%s) was initialized\n", dev->name); | |
995 | break; | |
996 | case NETDEV_UNREGISTER: | |
997 | /* the lec device was deallocated */ | |
998 | mpc = find_mpc_by_lec(dev); | |
999 | if (mpc == NULL) | |
1000 | break; | |
1001 | dprintk("mpoa: device (%s) was deallocated\n", dev->name); | |
1002 | stop_mpc(mpc); | |
1003 | dev_put(mpc->dev); | |
1004 | mpc->dev = NULL; | |
1005 | break; | |
1006 | case NETDEV_UP: | |
1007 | /* the dev was ifconfig'ed up */ | |
1008 | mpc = find_mpc_by_lec(dev); | |
1009 | if (mpc == NULL) | |
1010 | break; | |
1011 | if (mpc->mpoad_vcc != NULL) { | |
1012 | start_mpc(mpc, dev); | |
1013 | } | |
1014 | break; | |
1015 | case NETDEV_DOWN: | |
1016 | /* the dev was ifconfig'ed down */ | |
1017 | /* this means that the flow of packets from the | |
1018 | * upper layer stops | |
1019 | */ | |
1020 | mpc = find_mpc_by_lec(dev); | |
1021 | if (mpc == NULL) | |
1022 | break; | |
1023 | if (mpc->mpoad_vcc != NULL) { | |
1024 | stop_mpc(mpc); | |
1025 | } | |
1026 | break; | |
1027 | case NETDEV_REBOOT: | |
1028 | case NETDEV_CHANGE: | |
1029 | case NETDEV_CHANGEMTU: | |
1030 | case NETDEV_CHANGEADDR: | |
1031 | case NETDEV_GOING_DOWN: | |
1032 | break; | |
1033 | default: | |
1034 | break; | |
1035 | } | |
1036 | ||
1037 | return NOTIFY_DONE; | |
1038 | } | |
1039 | ||
1040 | /* | |
1041 | * Functions which are called after a message is received from mpcd. | |
1042 | * Msg is reused on purpose. | |
1043 | */ | |
1044 | ||
1045 | ||
1046 | static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc) | |
1047 | { | |
30d492da | 1048 | __be32 dst_ip = msg->content.in_info.in_dst_ip; |
1da177e4 LT |
1049 | in_cache_entry *entry; |
1050 | ||
1051 | entry = mpc->in_ops->get(dst_ip, mpc); | |
1052 | if(entry == NULL){ | |
1053 | entry = mpc->in_ops->add_entry(dst_ip, mpc); | |
1054 | entry->entry_state = INGRESS_RESOLVING; | |
1055 | msg->type = SND_MPOA_RES_RQST; | |
1056 | msg->content.in_info = entry->ctrl_info; | |
1057 | msg_to_mpoad(msg, mpc); | |
1058 | do_gettimeofday(&(entry->reply_wait)); | |
1059 | mpc->in_ops->put(entry); | |
1060 | return; | |
1061 | } | |
f7d57453 | 1062 | |
1da177e4 LT |
1063 | if(entry->entry_state == INGRESS_INVALID){ |
1064 | entry->entry_state = INGRESS_RESOLVING; | |
1065 | msg->type = SND_MPOA_RES_RQST; | |
1066 | msg->content.in_info = entry->ctrl_info; | |
1067 | msg_to_mpoad(msg, mpc); | |
1068 | do_gettimeofday(&(entry->reply_wait)); | |
1069 | mpc->in_ops->put(entry); | |
1070 | return; | |
1071 | } | |
f7d57453 | 1072 | |
1da177e4 LT |
1073 | printk("mpoa: (%s) MPOA_trigger_rcvd: entry already in resolving state\n", |
1074 | (mpc->dev) ? mpc->dev->name : "<unknown>"); | |
1075 | mpc->in_ops->put(entry); | |
1076 | return; | |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * Things get complicated because we have to check if there's an egress | |
f7d57453 | 1081 | * shortcut with suitable traffic parameters we could use. |
1da177e4 LT |
1082 | */ |
1083 | static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_client *client, in_cache_entry *entry) | |
1084 | { | |
30d492da | 1085 | __be32 dst_ip = msg->content.in_info.in_dst_ip; |
1da177e4 LT |
1086 | struct atm_mpoa_qos *qos = atm_mpoa_search_qos(dst_ip); |
1087 | eg_cache_entry *eg_entry = client->eg_ops->get_by_src_ip(dst_ip, client); | |
1088 | ||
1089 | if(eg_entry && eg_entry->shortcut){ | |
1090 | if(eg_entry->shortcut->qos.txtp.traffic_class & | |
1091 | msg->qos.txtp.traffic_class & | |
1092 | (qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)){ | |
1093 | if(eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR) | |
1094 | entry->shortcut = eg_entry->shortcut; | |
1095 | else if(eg_entry->shortcut->qos.txtp.max_pcr > 0) | |
1096 | entry->shortcut = eg_entry->shortcut; | |
1097 | } | |
f7d57453 | 1098 | if(entry->shortcut){ |
21454aaa HH |
1099 | dprintk("mpoa: (%s) using egress SVC to reach %pI4\n", |
1100 | client->dev->name, &dst_ip); | |
1da177e4 LT |
1101 | client->eg_ops->put(eg_entry); |
1102 | return; | |
1103 | } | |
1104 | } | |
1105 | if (eg_entry != NULL) | |
1106 | client->eg_ops->put(eg_entry); | |
1107 | ||
1108 | /* No luck in the egress cache we must open an ingress SVC */ | |
1109 | msg->type = OPEN_INGRESS_SVC; | |
1110 | if (qos && (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class)) | |
1111 | { | |
1112 | msg->qos = qos->qos; | |
1113 | printk("mpoa: (%s) trying to get a CBR shortcut\n",client->dev->name); | |
f7d57453 | 1114 | } |
1da177e4 LT |
1115 | else memset(&msg->qos,0,sizeof(struct atm_qos)); |
1116 | msg_to_mpoad(msg, client); | |
1117 | return; | |
1118 | } | |
1119 | ||
1120 | static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc) | |
1121 | { | |
30d492da | 1122 | __be32 dst_ip = msg->content.in_info.in_dst_ip; |
1da177e4 | 1123 | in_cache_entry *entry = mpc->in_ops->get(dst_ip, mpc); |
1e4fd51e | 1124 | |
21454aaa HH |
1125 | dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %pI4\n", |
1126 | mpc->dev->name, &dst_ip); | |
1da177e4 LT |
1127 | ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", mpc->dev->name, entry); |
1128 | if(entry == NULL){ | |
1129 | printk("\nmpoa: (%s) ARGH, received res. reply for an entry that doesn't exist.\n", mpc->dev->name); | |
1130 | return; | |
1131 | } | |
f7d57453 | 1132 | ddprintk(" entry_state = %d ", entry->entry_state); |
1da177e4 LT |
1133 | |
1134 | if (entry->entry_state == INGRESS_RESOLVED) { | |
1135 | printk("\nmpoa: (%s) MPOA_res_reply_rcvd for RESOLVED entry!\n", mpc->dev->name); | |
1136 | mpc->in_ops->put(entry); | |
1137 | return; | |
1138 | } | |
1139 | ||
1140 | entry->ctrl_info = msg->content.in_info; | |
1141 | do_gettimeofday(&(entry->tv)); | |
1142 | do_gettimeofday(&(entry->reply_wait)); /* Used in refreshing func from now on */ | |
1143 | entry->refresh_time = 0; | |
1144 | ddprintk("entry->shortcut = %p\n", entry->shortcut); | |
1145 | ||
1146 | if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL){ | |
f7d57453 | 1147 | entry->entry_state = INGRESS_RESOLVED; |
1da177e4 LT |
1148 | mpc->in_ops->put(entry); |
1149 | return; /* Shortcut already open... */ | |
1150 | } | |
1151 | ||
1152 | if (entry->shortcut != NULL) { | |
1153 | printk("mpoa: (%s) MPOA_res_reply_rcvd: entry->shortcut != NULL, impossible!\n", | |
1154 | mpc->dev->name); | |
1155 | mpc->in_ops->put(entry); | |
1156 | return; | |
1157 | } | |
f7d57453 | 1158 | |
1da177e4 LT |
1159 | check_qos_and_open_shortcut(msg, mpc, entry); |
1160 | entry->entry_state = INGRESS_RESOLVED; | |
1161 | mpc->in_ops->put(entry); | |
1162 | ||
1163 | return; | |
1164 | ||
1165 | } | |
1166 | ||
1167 | static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) | |
1168 | { | |
30d492da AV |
1169 | __be32 dst_ip = msg->content.in_info.in_dst_ip; |
1170 | __be32 mask = msg->ip_mask; | |
1da177e4 LT |
1171 | in_cache_entry *entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask); |
1172 | ||
1173 | if(entry == NULL){ | |
21454aaa HH |
1174 | printk("mpoa: (%s) ingress_purge_rcvd: purge for a non-existing entry, ip = %pI4\n", |
1175 | mpc->dev->name, &dst_ip); | |
1da177e4 LT |
1176 | return; |
1177 | } | |
1178 | ||
1179 | do { | |
21454aaa HH |
1180 | dprintk("mpoa: (%s) ingress_purge_rcvd: removing an ingress entry, ip = %pI4\n", |
1181 | mpc->dev->name, &dst_ip); | |
1da177e4 LT |
1182 | write_lock_bh(&mpc->ingress_lock); |
1183 | mpc->in_ops->remove_entry(entry, mpc); | |
1184 | write_unlock_bh(&mpc->ingress_lock); | |
1185 | mpc->in_ops->put(entry); | |
1186 | entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask); | |
1187 | } while (entry != NULL); | |
1188 | ||
1189 | return; | |
f7d57453 | 1190 | } |
1da177e4 LT |
1191 | |
1192 | static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) | |
1193 | { | |
30d492da | 1194 | __be32 cache_id = msg->content.eg_info.cache_id; |
1da177e4 | 1195 | eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(cache_id, mpc); |
f7d57453 | 1196 | |
1da177e4 LT |
1197 | if (entry == NULL) { |
1198 | dprintk("mpoa: (%s) egress_purge_rcvd: purge for a non-existing entry\n", mpc->dev->name); | |
1199 | return; | |
1200 | } | |
1201 | ||
1202 | write_lock_irq(&mpc->egress_lock); | |
1203 | mpc->eg_ops->remove_entry(entry, mpc); | |
1204 | write_unlock_irq(&mpc->egress_lock); | |
1205 | ||
1206 | mpc->eg_ops->put(entry); | |
1207 | ||
1208 | return; | |
f7d57453 | 1209 | } |
1da177e4 LT |
1210 | |
1211 | static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry) | |
1212 | { | |
1213 | struct sock *sk; | |
1214 | struct k_message *purge_msg; | |
1215 | struct sk_buff *skb; | |
1216 | ||
1217 | dprintk("mpoa: purge_egress_shortcut: entering\n"); | |
1218 | if (vcc == NULL) { | |
1219 | printk("mpoa: purge_egress_shortcut: vcc == NULL\n"); | |
1220 | return; | |
1221 | } | |
1222 | ||
1223 | skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); | |
1224 | if (skb == NULL) { | |
1225 | printk("mpoa: purge_egress_shortcut: out of memory\n"); | |
1226 | return; | |
1227 | } | |
1228 | ||
1229 | skb_put(skb, sizeof(struct k_message)); | |
1230 | memset(skb->data, 0, sizeof(struct k_message)); | |
1231 | purge_msg = (struct k_message *)skb->data; | |
1232 | purge_msg->type = DATA_PLANE_PURGE; | |
1233 | if (entry != NULL) | |
1234 | purge_msg->content.eg_info = entry->ctrl_info; | |
1235 | ||
1236 | atm_force_charge(vcc, skb->truesize); | |
1237 | ||
1238 | sk = sk_atm(vcc); | |
1239 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
1240 | sk->sk_data_ready(sk, skb->len); | |
1241 | dprintk("mpoa: purge_egress_shortcut: exiting:\n"); | |
1242 | ||
1243 | return; | |
1244 | } | |
1245 | ||
1246 | /* | |
1247 | * Our MPS died. Tell our daemon to send NHRP data plane purge to each | |
1248 | * of the egress shortcuts we have. | |
1249 | */ | |
1250 | static void mps_death( struct k_message * msg, struct mpoa_client * mpc ) | |
1251 | { | |
1252 | eg_cache_entry *entry; | |
1253 | ||
1254 | dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name); | |
1255 | ||
1256 | if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){ | |
1257 | printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name); | |
1258 | return; | |
1259 | } | |
1260 | ||
1261 | /* FIXME: This knows too much of the cache structure */ | |
1262 | read_lock_irq(&mpc->egress_lock); | |
1263 | entry = mpc->eg_cache; | |
1264 | while (entry != NULL) { | |
1265 | purge_egress_shortcut(entry->shortcut, entry); | |
1266 | entry = entry->next; | |
1267 | } | |
1268 | read_unlock_irq(&mpc->egress_lock); | |
1269 | ||
1270 | mpc->in_ops->destroy_cache(mpc); | |
1271 | mpc->eg_ops->destroy_cache(mpc); | |
1272 | ||
1273 | return; | |
1274 | } | |
1275 | ||
1276 | static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * mpc) | |
1277 | { | |
1278 | uint16_t holding_time; | |
1279 | eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(msg->content.eg_info.cache_id, mpc); | |
f7d57453 | 1280 | |
1da177e4 LT |
1281 | holding_time = msg->content.eg_info.holding_time; |
1282 | dprintk("mpoa: (%s) MPOA_cache_impos_rcvd: entry = %p, holding_time = %u\n", | |
1283 | mpc->dev->name, entry, holding_time); | |
1284 | if(entry == NULL && holding_time) { | |
1285 | entry = mpc->eg_ops->add_entry(msg, mpc); | |
1286 | mpc->eg_ops->put(entry); | |
1287 | return; | |
1288 | } | |
1289 | if(holding_time){ | |
1290 | mpc->eg_ops->update(entry, holding_time); | |
1291 | return; | |
1292 | } | |
f7d57453 | 1293 | |
1da177e4 LT |
1294 | write_lock_irq(&mpc->egress_lock); |
1295 | mpc->eg_ops->remove_entry(entry, mpc); | |
1296 | write_unlock_irq(&mpc->egress_lock); | |
1297 | ||
1298 | mpc->eg_ops->put(entry); | |
f7d57453 | 1299 | |
1da177e4 LT |
1300 | return; |
1301 | } | |
1302 | ||
1303 | static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc) | |
1304 | { | |
1305 | struct lec_priv *priv; | |
1306 | int i, retval ; | |
1307 | ||
1308 | uint8_t tlv[4 + 1 + 1 + 1 + ATM_ESA_LEN]; | |
1309 | ||
1310 | tlv[0] = 00; tlv[1] = 0xa0; tlv[2] = 0x3e; tlv[3] = 0x2a; /* type */ | |
1311 | tlv[4] = 1 + 1 + ATM_ESA_LEN; /* length */ | |
1312 | tlv[5] = 0x02; /* MPOA client */ | |
1313 | tlv[6] = 0x00; /* number of MPS MAC addresses */ | |
1314 | ||
1315 | memcpy(&tlv[7], mesg->MPS_ctrl, ATM_ESA_LEN); /* MPC ctrl ATM addr */ | |
1316 | memcpy(mpc->our_ctrl_addr, mesg->MPS_ctrl, ATM_ESA_LEN); | |
1317 | ||
1318 | dprintk("mpoa: (%s) setting MPC ctrl ATM address to ", | |
1319 | (mpc->dev) ? mpc->dev->name : "<unknown>"); | |
1320 | for (i = 7; i < sizeof(tlv); i++) | |
1321 | dprintk("%02x ", tlv[i]); | |
1322 | dprintk("\n"); | |
1323 | ||
1324 | if (mpc->dev) { | |
524ad0a7 | 1325 | priv = netdev_priv(mpc->dev); |
1da177e4 LT |
1326 | retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv)); |
1327 | if (retval == 0) | |
1328 | printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name); | |
1329 | retval = priv->lane2_ops->resolve(mpc->dev, NULL, 1, NULL, NULL); | |
1330 | if (retval < 0) | |
1331 | printk("mpoa: (%s) targetless LE_ARP request failed\n", mpc->dev->name); | |
1332 | } | |
1333 | ||
1334 | return; | |
1335 | } | |
1336 | ||
1337 | static void set_mps_mac_addr_rcvd(struct k_message *msg, struct mpoa_client *client) | |
1338 | { | |
1339 | ||
1340 | if(client->number_of_mps_macs) | |
1341 | kfree(client->mps_macs); | |
1342 | client->number_of_mps_macs = 0; | |
2afe37cd | 1343 | client->mps_macs = kmemdup(msg->MPS_ctrl, ETH_ALEN, GFP_KERNEL); |
1da177e4 LT |
1344 | if (client->mps_macs == NULL) { |
1345 | printk("mpoa: set_mps_mac_addr_rcvd: out of memory\n"); | |
1346 | return; | |
1347 | } | |
1348 | client->number_of_mps_macs = 1; | |
f7d57453 | 1349 | |
1da177e4 LT |
1350 | return; |
1351 | } | |
1352 | ||
1353 | /* | |
1354 | * purge egress cache and tell daemon to 'action' (DIE, RELOAD) | |
1355 | */ | |
1356 | static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action) | |
1357 | { | |
1358 | ||
1359 | eg_cache_entry *entry; | |
1360 | msg->type = SND_EGRESS_PURGE; | |
1361 | ||
1362 | ||
1363 | /* FIXME: This knows too much of the cache structure */ | |
1364 | read_lock_irq(&mpc->egress_lock); | |
1365 | entry = mpc->eg_cache; | |
1366 | while (entry != NULL){ | |
1367 | msg->content.eg_info = entry->ctrl_info; | |
1368 | dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id); | |
1369 | msg_to_mpoad(msg, mpc); | |
1370 | entry = entry->next; | |
1371 | } | |
1372 | read_unlock_irq(&mpc->egress_lock); | |
1373 | ||
1374 | msg->type = action; | |
1375 | msg_to_mpoad(msg, mpc); | |
1376 | return; | |
1377 | } | |
1378 | ||
1379 | static void mpc_timer_refresh(void) | |
1380 | { | |
1381 | mpc_timer.expires = jiffies + (MPC_P2 * HZ); | |
1382 | mpc_timer.data = mpc_timer.expires; | |
1383 | mpc_timer.function = mpc_cache_check; | |
1384 | add_timer(&mpc_timer); | |
f7d57453 | 1385 | |
1da177e4 LT |
1386 | return; |
1387 | } | |
1388 | ||
1389 | static void mpc_cache_check( unsigned long checking_time ) | |
1390 | { | |
1391 | struct mpoa_client *mpc = mpcs; | |
1392 | static unsigned long previous_resolving_check_time; | |
1393 | static unsigned long previous_refresh_time; | |
f7d57453 | 1394 | |
1da177e4 LT |
1395 | while( mpc != NULL ){ |
1396 | mpc->in_ops->clear_count(mpc); | |
1397 | mpc->eg_ops->clear_expired(mpc); | |
1398 | if(checking_time - previous_resolving_check_time > mpc->parameters.mpc_p4 * HZ ){ | |
1399 | mpc->in_ops->check_resolving(mpc); | |
1400 | previous_resolving_check_time = checking_time; | |
1401 | } | |
1402 | if(checking_time - previous_refresh_time > mpc->parameters.mpc_p5 * HZ ){ | |
1403 | mpc->in_ops->refresh(mpc); | |
1404 | previous_refresh_time = checking_time; | |
1405 | } | |
1406 | mpc = mpc->next; | |
1407 | } | |
1408 | mpc_timer_refresh(); | |
f7d57453 | 1409 | |
1da177e4 LT |
1410 | return; |
1411 | } | |
1412 | ||
1413 | static int atm_mpoa_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1414 | { | |
1415 | int err = 0; | |
1416 | struct atm_vcc *vcc = ATM_SD(sock); | |
1417 | ||
1418 | if (cmd != ATMMPC_CTRL && cmd != ATMMPC_DATA) | |
1419 | return -ENOIOCTLCMD; | |
1420 | ||
1421 | if (!capable(CAP_NET_ADMIN)) | |
1422 | return -EPERM; | |
1423 | ||
1424 | switch (cmd) { | |
1425 | case ATMMPC_CTRL: | |
1426 | err = atm_mpoa_mpoad_attach(vcc, (int)arg); | |
1427 | if (err >= 0) | |
1428 | sock->state = SS_CONNECTED; | |
1429 | break; | |
1430 | case ATMMPC_DATA: | |
1431 | err = atm_mpoa_vcc_attach(vcc, (void __user *)arg); | |
1432 | break; | |
1433 | default: | |
1434 | break; | |
1435 | } | |
1436 | return err; | |
1437 | } | |
1438 | ||
1439 | ||
1440 | static struct atm_ioctl atm_ioctl_ops = { | |
1441 | .owner = THIS_MODULE, | |
1442 | .ioctl = atm_mpoa_ioctl, | |
1443 | }; | |
1444 | ||
1445 | static __init int atm_mpoa_init(void) | |
1446 | { | |
1447 | register_atm_ioctl(&atm_ioctl_ops); | |
1448 | ||
1da177e4 LT |
1449 | if (mpc_proc_init() != 0) |
1450 | printk(KERN_INFO "mpoa: failed to initialize /proc/mpoa\n"); | |
1da177e4 LT |
1451 | |
1452 | printk("mpc.c: " __DATE__ " " __TIME__ " initialized\n"); | |
1453 | ||
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | static void __exit atm_mpoa_cleanup(void) | |
1458 | { | |
1459 | struct mpoa_client *mpc, *tmp; | |
1460 | struct atm_mpoa_qos *qos, *nextqos; | |
1461 | struct lec_priv *priv; | |
1462 | ||
1da177e4 | 1463 | mpc_proc_clean(); |
1da177e4 LT |
1464 | |
1465 | del_timer(&mpc_timer); | |
1466 | unregister_netdevice_notifier(&mpoa_notifier); | |
1467 | deregister_atm_ioctl(&atm_ioctl_ops); | |
1468 | ||
1469 | mpc = mpcs; | |
1470 | mpcs = NULL; | |
1471 | while (mpc != NULL) { | |
1472 | tmp = mpc->next; | |
1473 | if (mpc->dev != NULL) { | |
1474 | stop_mpc(mpc); | |
524ad0a7 | 1475 | priv = netdev_priv(mpc->dev); |
1da177e4 LT |
1476 | if (priv->lane2_ops != NULL) |
1477 | priv->lane2_ops->associate_indicator = NULL; | |
1478 | } | |
1479 | ddprintk("mpoa: cleanup_module: about to clear caches\n"); | |
1480 | mpc->in_ops->destroy_cache(mpc); | |
1481 | mpc->eg_ops->destroy_cache(mpc); | |
1482 | ddprintk("mpoa: cleanup_module: caches cleared\n"); | |
1483 | kfree(mpc->mps_macs); | |
1484 | memset(mpc, 0, sizeof(struct mpoa_client)); | |
1485 | ddprintk("mpoa: cleanup_module: about to kfree %p\n", mpc); | |
1486 | kfree(mpc); | |
1487 | ddprintk("mpoa: cleanup_module: next mpc is at %p\n", tmp); | |
1488 | mpc = tmp; | |
1489 | } | |
1490 | ||
1491 | qos = qos_head; | |
1492 | qos_head = NULL; | |
1493 | while (qos != NULL) { | |
1494 | nextqos = qos->next; | |
1495 | dprintk("mpoa: cleanup_module: freeing qos entry %p\n", qos); | |
1496 | kfree(qos); | |
1497 | qos = nextqos; | |
1498 | } | |
1499 | ||
1500 | return; | |
1501 | } | |
1502 | ||
1503 | module_init(atm_mpoa_init); | |
1504 | module_exit(atm_mpoa_cleanup); | |
1505 | ||
1506 | MODULE_LICENSE("GPL"); |