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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 | ||
65 | static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac, | |
66 | uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type); | |
67 | static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry); | |
68 | ||
69 | static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc); | |
70 | static void mpoad_close(struct atm_vcc *vcc); | |
71 | static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb); | |
72 | ||
73 | static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb); | |
74 | static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev); | |
75 | static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev); | |
76 | static void mpc_timer_refresh(void); | |
77 | static void mpc_cache_check( unsigned long checking_time ); | |
78 | ||
79 | static struct llc_snap_hdr llc_snap_mpoa_ctrl = { | |
80 | 0xaa, 0xaa, 0x03, | |
81 | {0x00, 0x00, 0x5e}, | |
82 | {0x00, 0x03} /* For MPOA control PDUs */ | |
f7d57453 | 83 | }; |
1da177e4 LT |
84 | static struct llc_snap_hdr llc_snap_mpoa_data = { |
85 | 0xaa, 0xaa, 0x03, | |
86 | {0x00, 0x00, 0x00}, | |
87 | {0x08, 0x00} /* This is for IP PDUs only */ | |
f7d57453 | 88 | }; |
1da177e4 LT |
89 | static struct llc_snap_hdr llc_snap_mpoa_data_tagged = { |
90 | 0xaa, 0xaa, 0x03, | |
91 | {0x00, 0x00, 0x00}, | |
92 | {0x88, 0x4c} /* This is for tagged data PDUs */ | |
f7d57453 | 93 | }; |
1da177e4 LT |
94 | |
95 | static struct notifier_block mpoa_notifier = { | |
96 | mpoa_event_listener, | |
97 | NULL, | |
98 | 0 | |
99 | }; | |
100 | ||
1da177e4 LT |
101 | struct mpoa_client *mpcs = NULL; /* FIXME */ |
102 | static struct atm_mpoa_qos *qos_head = NULL; | |
8d06afab | 103 | static DEFINE_TIMER(mpc_timer, NULL, 0, 0); |
1da177e4 LT |
104 | |
105 | ||
106 | static struct mpoa_client *find_mpc_by_itfnum(int itf) | |
107 | { | |
108 | struct mpoa_client *mpc; | |
f7d57453 | 109 | |
1da177e4 LT |
110 | mpc = mpcs; /* our global linked list */ |
111 | while (mpc != NULL) { | |
112 | if (mpc->dev_num == itf) | |
113 | return mpc; | |
f7d57453 | 114 | mpc = mpc->next; |
1da177e4 LT |
115 | } |
116 | ||
117 | return NULL; /* not found */ | |
118 | } | |
119 | ||
120 | static struct mpoa_client *find_mpc_by_vcc(struct atm_vcc *vcc) | |
121 | { | |
122 | struct mpoa_client *mpc; | |
f7d57453 | 123 | |
1da177e4 LT |
124 | mpc = mpcs; /* our global linked list */ |
125 | while (mpc != NULL) { | |
126 | if (mpc->mpoad_vcc == vcc) | |
127 | return mpc; | |
128 | mpc = mpc->next; | |
129 | } | |
130 | ||
131 | return NULL; /* not found */ | |
132 | } | |
133 | ||
134 | static struct mpoa_client *find_mpc_by_lec(struct net_device *dev) | |
135 | { | |
136 | struct mpoa_client *mpc; | |
f7d57453 | 137 | |
1da177e4 LT |
138 | mpc = mpcs; /* our global linked list */ |
139 | while (mpc != NULL) { | |
140 | if (mpc->dev == dev) | |
141 | return mpc; | |
142 | mpc = mpc->next; | |
143 | } | |
144 | ||
145 | return NULL; /* not found */ | |
146 | } | |
147 | ||
148 | /* | |
149 | * Functions for managing QoS list | |
150 | */ | |
151 | ||
152 | /* | |
153 | * Overwrites the old entry or makes a new one. | |
154 | */ | |
30d492da | 155 | struct atm_mpoa_qos *atm_mpoa_add_qos(__be32 dst_ip, struct atm_qos *qos) |
1da177e4 LT |
156 | { |
157 | struct atm_mpoa_qos *entry; | |
158 | ||
159 | entry = atm_mpoa_search_qos(dst_ip); | |
160 | if (entry != NULL) { | |
161 | entry->qos = *qos; | |
162 | return entry; | |
163 | } | |
164 | ||
165 | entry = kmalloc(sizeof(struct atm_mpoa_qos), GFP_KERNEL); | |
166 | if (entry == NULL) { | |
167 | printk("mpoa: atm_mpoa_add_qos: out of memory\n"); | |
168 | return entry; | |
169 | } | |
170 | ||
171 | entry->ipaddr = dst_ip; | |
172 | entry->qos = *qos; | |
173 | ||
174 | entry->next = qos_head; | |
175 | qos_head = entry; | |
176 | ||
177 | return entry; | |
178 | } | |
179 | ||
30d492da | 180 | struct atm_mpoa_qos *atm_mpoa_search_qos(__be32 dst_ip) |
1da177e4 LT |
181 | { |
182 | struct atm_mpoa_qos *qos; | |
183 | ||
184 | qos = qos_head; | |
185 | while( qos != NULL ){ | |
186 | if(qos->ipaddr == dst_ip) { | |
187 | break; | |
188 | } | |
189 | qos = qos->next; | |
190 | } | |
191 | ||
192 | return qos; | |
f7d57453 | 193 | } |
1da177e4 LT |
194 | |
195 | /* | |
196 | * Returns 0 for failure | |
197 | */ | |
198 | int atm_mpoa_delete_qos(struct atm_mpoa_qos *entry) | |
199 | { | |
200 | ||
201 | struct atm_mpoa_qos *curr; | |
202 | ||
203 | if (entry == NULL) return 0; | |
204 | if (entry == qos_head) { | |
205 | qos_head = qos_head->next; | |
206 | kfree(entry); | |
207 | return 1; | |
208 | } | |
209 | ||
210 | curr = qos_head; | |
211 | while (curr != NULL) { | |
212 | if (curr->next == entry) { | |
213 | curr->next = entry->next; | |
214 | kfree(entry); | |
215 | return 1; | |
216 | } | |
217 | curr = curr->next; | |
218 | } | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | /* this is buggered - we need locking for qos_head */ | |
224 | void atm_mpoa_disp_qos(struct seq_file *m) | |
225 | { | |
1da177e4 LT |
226 | struct atm_mpoa_qos *qos; |
227 | ||
228 | qos = qos_head; | |
229 | seq_printf(m, "QoS entries for shortcuts:\n"); | |
230 | 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"); | |
231 | ||
1da177e4 | 232 | while (qos != NULL) { |
1da177e4 | 233 | seq_printf(m, "%u.%u.%u.%u\n %-7d %-7d %-7d %-7d %-7d\n %-7d %-7d %-7d %-7d %-7d\n", |
ff7512e1 | 234 | NIPQUAD(qos->ipaddr), |
1da177e4 LT |
235 | qos->qos.txtp.max_pcr, qos->qos.txtp.pcr, qos->qos.txtp.min_pcr, qos->qos.txtp.max_cdv, qos->qos.txtp.max_sdu, |
236 | qos->qos.rxtp.max_pcr, qos->qos.rxtp.pcr, qos->qos.rxtp.min_pcr, qos->qos.rxtp.max_cdv, qos->qos.rxtp.max_sdu); | |
237 | qos = qos->next; | |
238 | } | |
239 | } | |
240 | ||
241 | static struct net_device *find_lec_by_itfnum(int itf) | |
242 | { | |
243 | struct net_device *dev; | |
244 | char name[IFNAMSIZ]; | |
245 | ||
246 | sprintf(name, "lec%d", itf); | |
881d966b | 247 | dev = dev_get_by_name(&init_net, name); |
f7d57453 | 248 | |
1da177e4 LT |
249 | return dev; |
250 | } | |
251 | ||
252 | static struct mpoa_client *alloc_mpc(void) | |
253 | { | |
254 | struct mpoa_client *mpc; | |
255 | ||
0da974f4 | 256 | mpc = kzalloc(sizeof (struct mpoa_client), GFP_KERNEL); |
1da177e4 LT |
257 | if (mpc == NULL) |
258 | return NULL; | |
1da177e4 LT |
259 | rwlock_init(&mpc->ingress_lock); |
260 | rwlock_init(&mpc->egress_lock); | |
261 | mpc->next = mpcs; | |
262 | atm_mpoa_init_cache(mpc); | |
263 | ||
264 | mpc->parameters.mpc_p1 = MPC_P1; | |
265 | mpc->parameters.mpc_p2 = MPC_P2; | |
266 | memset(mpc->parameters.mpc_p3,0,sizeof(mpc->parameters.mpc_p3)); | |
267 | mpc->parameters.mpc_p4 = MPC_P4; | |
f7d57453 | 268 | mpc->parameters.mpc_p5 = MPC_P5; |
1da177e4 | 269 | mpc->parameters.mpc_p6 = MPC_P6; |
f7d57453 | 270 | |
1da177e4 | 271 | mpcs = mpc; |
f7d57453 | 272 | |
1da177e4 LT |
273 | return mpc; |
274 | } | |
275 | ||
276 | /* | |
277 | * | |
278 | * start_mpc() puts the MPC on line. All the packets destined | |
f7d57453 | 279 | * to the lec underneath us are now being monitored and |
1da177e4 LT |
280 | * shortcuts will be established. |
281 | * | |
282 | */ | |
283 | static void start_mpc(struct mpoa_client *mpc, struct net_device *dev) | |
284 | { | |
f7d57453 YH |
285 | |
286 | dprintk("mpoa: (%s) start_mpc:\n", mpc->dev->name); | |
1da177e4 LT |
287 | if (dev->hard_start_xmit == NULL) { |
288 | printk("mpoa: (%s) start_mpc: dev->hard_start_xmit == NULL, not starting\n", | |
289 | dev->name); | |
290 | return; | |
291 | } | |
292 | mpc->old_hard_start_xmit = dev->hard_start_xmit; | |
293 | dev->hard_start_xmit = mpc_send_packet; | |
294 | ||
295 | return; | |
296 | } | |
297 | ||
298 | static void stop_mpc(struct mpoa_client *mpc) | |
299 | { | |
f7d57453 YH |
300 | |
301 | dprintk("mpoa: (%s) stop_mpc:", mpc->dev->name); | |
1da177e4 LT |
302 | |
303 | /* Lets not nullify lec device's dev->hard_start_xmit */ | |
304 | if (mpc->dev->hard_start_xmit != mpc_send_packet) { | |
305 | dprintk(" mpc already stopped, not fatal\n"); | |
306 | return; | |
307 | } | |
308 | dprintk("\n"); | |
309 | mpc->dev->hard_start_xmit = mpc->old_hard_start_xmit; | |
310 | mpc->old_hard_start_xmit = NULL; | |
311 | /* close_shortcuts(mpc); ??? FIXME */ | |
f7d57453 | 312 | |
1da177e4 LT |
313 | return; |
314 | } | |
315 | ||
316 | static const char *mpoa_device_type_string(char type) __attribute__ ((unused)); | |
317 | ||
318 | static const char *mpoa_device_type_string(char type) | |
319 | { | |
320 | switch(type) { | |
321 | case NON_MPOA: | |
322 | return "non-MPOA device"; | |
323 | break; | |
324 | case MPS: | |
325 | return "MPS"; | |
326 | break; | |
327 | case MPC: | |
328 | return "MPC"; | |
329 | break; | |
330 | case MPS_AND_MPC: | |
331 | return "both MPS and MPC"; | |
332 | break; | |
333 | default: | |
334 | return "unspecified (non-MPOA) device"; | |
335 | break; | |
336 | } | |
337 | ||
338 | return ""; /* not reached */ | |
339 | } | |
340 | ||
341 | /* | |
342 | * lec device calls this via its dev->priv->lane2_ops->associate_indicator() | |
343 | * when it sees a TLV in LE_ARP packet. | |
344 | * We fill in the pointer above when we see a LANE2 lec initializing | |
345 | * See LANE2 spec 3.1.5 | |
346 | * | |
347 | * Quite a big and ugly function but when you look at it | |
348 | * all it does is to try to locate and parse MPOA Device | |
349 | * Type TLV. | |
350 | * We give our lec a pointer to this function and when the | |
351 | * lec sees a TLV it uses the pointer to call this function. | |
352 | * | |
353 | */ | |
354 | static void lane2_assoc_ind(struct net_device *dev, uint8_t *mac_addr, | |
355 | uint8_t *tlvs, uint32_t sizeoftlvs) | |
356 | { | |
357 | uint32_t type; | |
358 | uint8_t length, mpoa_device_type, number_of_mps_macs; | |
359 | uint8_t *end_of_tlvs; | |
360 | struct mpoa_client *mpc; | |
f7d57453 | 361 | |
1da177e4 LT |
362 | mpoa_device_type = number_of_mps_macs = 0; /* silence gcc */ |
363 | dprintk("mpoa: (%s) lane2_assoc_ind: received TLV(s), ", dev->name); | |
364 | dprintk("total length of all TLVs %d\n", sizeoftlvs); | |
365 | mpc = find_mpc_by_lec(dev); /* Sampo-Fix: moved here from below */ | |
366 | if (mpc == NULL) { | |
367 | printk("mpoa: (%s) lane2_assoc_ind: no mpc\n", dev->name); | |
368 | return; | |
369 | } | |
370 | end_of_tlvs = tlvs + sizeoftlvs; | |
371 | while (end_of_tlvs - tlvs >= 5) { | |
372 | type = (tlvs[0] << 24) | (tlvs[1] << 16) | (tlvs[2] << 8) | tlvs[3]; | |
373 | length = tlvs[4]; | |
374 | tlvs += 5; | |
375 | dprintk(" type 0x%x length %02x\n", type, length); | |
376 | if (tlvs + length > end_of_tlvs) { | |
377 | printk("TLV value extends past its buffer, aborting parse\n"); | |
378 | return; | |
379 | } | |
f7d57453 | 380 | |
1da177e4 LT |
381 | if (type == 0) { |
382 | printk("mpoa: (%s) lane2_assoc_ind: TLV type was 0, returning\n", dev->name); | |
383 | return; | |
384 | } | |
385 | ||
386 | if (type != TLV_MPOA_DEVICE_TYPE) { | |
387 | tlvs += length; | |
388 | continue; /* skip other TLVs */ | |
389 | } | |
390 | mpoa_device_type = *tlvs++; | |
391 | number_of_mps_macs = *tlvs++; | |
392 | dprintk("mpoa: (%s) MPOA device type '%s', ", dev->name, mpoa_device_type_string(mpoa_device_type)); | |
393 | if (mpoa_device_type == MPS_AND_MPC && | |
394 | length < (42 + number_of_mps_macs*ETH_ALEN)) { /* :) */ | |
395 | printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", | |
396 | dev->name); | |
397 | continue; | |
398 | } | |
399 | if ((mpoa_device_type == MPS || mpoa_device_type == MPC) | |
400 | && length < 22 + number_of_mps_macs*ETH_ALEN) { | |
401 | printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", | |
402 | dev->name); | |
403 | continue; | |
404 | } | |
405 | if (mpoa_device_type != MPS && mpoa_device_type != MPS_AND_MPC) { | |
406 | dprintk("ignoring non-MPS device\n"); | |
407 | if (mpoa_device_type == MPC) tlvs += 20; | |
408 | continue; /* we are only interested in MPSs */ | |
409 | } | |
410 | if (number_of_mps_macs == 0 && mpoa_device_type == MPS_AND_MPC) { | |
411 | printk("\nmpoa: (%s) lane2_assoc_ind: MPS_AND_MPC has zero MACs\n", dev->name); | |
412 | continue; /* someone should read the spec */ | |
413 | } | |
414 | dprintk("this MPS has %d MAC addresses\n", number_of_mps_macs); | |
f7d57453 | 415 | |
1da177e4 LT |
416 | /* ok, now we can go and tell our daemon the control address of MPS */ |
417 | send_set_mps_ctrl_addr(tlvs, mpc); | |
f7d57453 | 418 | |
1da177e4 LT |
419 | tlvs = copy_macs(mpc, mac_addr, tlvs, number_of_mps_macs, mpoa_device_type); |
420 | if (tlvs == NULL) return; | |
421 | } | |
422 | if (end_of_tlvs - tlvs != 0) | |
423 | printk("mpoa: (%s) lane2_assoc_ind: ignoring %Zd bytes of trailing TLV carbage\n", | |
424 | dev->name, end_of_tlvs - tlvs); | |
425 | return; | |
426 | } | |
427 | ||
428 | /* | |
429 | * Store at least advertizing router's MAC address | |
430 | * plus the possible MAC address(es) to mpc->mps_macs. | |
431 | * For a freshly allocated MPOA client mpc->mps_macs == 0. | |
432 | */ | |
433 | static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac, | |
434 | uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type) | |
435 | { | |
436 | int num_macs; | |
437 | num_macs = (mps_macs > 1) ? mps_macs : 1; | |
438 | ||
439 | if (mpc->number_of_mps_macs != num_macs) { /* need to reallocate? */ | |
440 | if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs); | |
441 | mpc->number_of_mps_macs = 0; | |
442 | mpc->mps_macs = kmalloc(num_macs*ETH_ALEN, GFP_KERNEL); | |
443 | if (mpc->mps_macs == NULL) { | |
444 | printk("mpoa: (%s) copy_macs: out of mem\n", mpc->dev->name); | |
445 | return NULL; | |
446 | } | |
447 | } | |
448 | memcpy(mpc->mps_macs, router_mac, ETH_ALEN); | |
449 | tlvs += 20; if (device_type == MPS_AND_MPC) tlvs += 20; | |
450 | if (mps_macs > 0) | |
451 | memcpy(mpc->mps_macs, tlvs, mps_macs*ETH_ALEN); | |
452 | tlvs += mps_macs*ETH_ALEN; | |
453 | mpc->number_of_mps_macs = num_macs; | |
454 | ||
455 | return tlvs; | |
456 | } | |
457 | ||
458 | static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc) | |
459 | { | |
460 | in_cache_entry *entry; | |
461 | struct iphdr *iph; | |
462 | char *buff; | |
30d492da | 463 | __be32 ipaddr = 0; |
1da177e4 LT |
464 | |
465 | static struct { | |
466 | struct llc_snap_hdr hdr; | |
30d492da | 467 | __be32 tag; |
1da177e4 LT |
468 | } tagged_llc_snap_hdr = { |
469 | {0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x88, 0x4c}}, | |
470 | 0 | |
471 | }; | |
472 | ||
473 | buff = skb->data + mpc->dev->hard_header_len; | |
474 | iph = (struct iphdr *)buff; | |
475 | ipaddr = iph->daddr; | |
476 | ||
f7d57453 | 477 | ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", mpc->dev->name, ipaddr); |
1da177e4 LT |
478 | |
479 | entry = mpc->in_ops->get(ipaddr, mpc); | |
480 | if (entry == NULL) { | |
481 | entry = mpc->in_ops->add_entry(ipaddr, mpc); | |
482 | if (entry != NULL) mpc->in_ops->put(entry); | |
483 | return 1; | |
484 | } | |
485 | if (mpc->in_ops->cache_hit(entry, mpc) != OPEN){ /* threshold not exceeded or VCC not ready */ | |
f7d57453 | 486 | ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", mpc->dev->name); |
1da177e4 LT |
487 | mpc->in_ops->put(entry); |
488 | return 1; | |
489 | } | |
490 | ||
f7d57453 | 491 | ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", mpc->dev->name); |
1da177e4 LT |
492 | /* MPOA spec A.1.4, MPOA client must decrement IP ttl at least by one */ |
493 | if (iph->ttl <= 1) { | |
f7d57453 | 494 | ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", mpc->dev->name, iph->ttl); |
1da177e4 LT |
495 | mpc->in_ops->put(entry); |
496 | return 1; | |
497 | } | |
498 | iph->ttl--; | |
499 | iph->check = 0; | |
500 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
501 | ||
502 | if (entry->ctrl_info.tag != 0) { | |
503 | ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", mpc->dev->name, entry->ctrl_info.tag); | |
504 | tagged_llc_snap_hdr.tag = entry->ctrl_info.tag; | |
505 | skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ | |
506 | skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */ | |
27d7ff46 ACM |
507 | skb_copy_to_linear_data(skb, &tagged_llc_snap_hdr, |
508 | sizeof(tagged_llc_snap_hdr)); | |
1da177e4 LT |
509 | } else { |
510 | skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ | |
511 | skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */ | |
27d7ff46 ACM |
512 | skb_copy_to_linear_data(skb, &llc_snap_mpoa_data, |
513 | sizeof(struct llc_snap_hdr)); | |
1da177e4 LT |
514 | } |
515 | ||
516 | atomic_add(skb->truesize, &sk_atm(entry->shortcut)->sk_wmem_alloc); | |
517 | ATM_SKB(skb)->atm_options = entry->shortcut->atm_options; | |
518 | entry->shortcut->send(entry->shortcut, skb); | |
519 | entry->packets_fwded++; | |
520 | mpc->in_ops->put(entry); | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | /* | |
526 | * Probably needs some error checks and locking, not sure... | |
527 | */ | |
528 | static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev) | |
529 | { | |
530 | int retval; | |
531 | struct mpoa_client *mpc; | |
532 | struct ethhdr *eth; | |
533 | int i = 0; | |
f7d57453 | 534 | |
1da177e4 LT |
535 | mpc = find_mpc_by_lec(dev); /* this should NEVER fail */ |
536 | if(mpc == NULL) { | |
537 | printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name); | |
538 | goto non_ip; | |
539 | } | |
540 | ||
541 | eth = (struct ethhdr *)skb->data; | |
542 | if (eth->h_proto != htons(ETH_P_IP)) | |
543 | goto non_ip; /* Multi-Protocol Over ATM :-) */ | |
544 | ||
1c9b7aa1 HX |
545 | /* Weed out funny packets (e.g., AF_PACKET or raw). */ |
546 | if (skb->len < ETH_HLEN + sizeof(struct iphdr)) | |
547 | goto non_ip; | |
548 | skb_set_network_header(skb, ETH_HLEN); | |
549 | if (skb->len < ETH_HLEN + ip_hdr(skb)->ihl * 4 || ip_hdr(skb)->ihl < 5) | |
550 | goto non_ip; | |
551 | ||
1da177e4 | 552 | while (i < mpc->number_of_mps_macs) { |
d3f4a687 | 553 | if (!compare_ether_addr(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN))) |
1da177e4 LT |
554 | if ( send_via_shortcut(skb, mpc) == 0 ) /* try shortcut */ |
555 | return 0; /* success! */ | |
556 | i++; | |
557 | } | |
558 | ||
559 | non_ip: | |
560 | retval = mpc->old_hard_start_xmit(skb,dev); | |
f7d57453 | 561 | |
1da177e4 LT |
562 | return retval; |
563 | } | |
564 | ||
565 | static int atm_mpoa_vcc_attach(struct atm_vcc *vcc, void __user *arg) | |
566 | { | |
567 | int bytes_left; | |
568 | struct mpoa_client *mpc; | |
569 | struct atmmpc_ioc ioc_data; | |
570 | in_cache_entry *in_entry; | |
30d492da | 571 | __be32 ipaddr; |
1da177e4 LT |
572 | |
573 | bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmmpc_ioc)); | |
574 | if (bytes_left != 0) { | |
575 | printk("mpoa: mpc_vcc_attach: Short read (missed %d bytes) from userland\n", bytes_left); | |
576 | return -EFAULT; | |
577 | } | |
578 | ipaddr = ioc_data.ipaddr; | |
579 | if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF) | |
580 | return -EINVAL; | |
f7d57453 | 581 | |
1da177e4 LT |
582 | mpc = find_mpc_by_itfnum(ioc_data.dev_num); |
583 | if (mpc == NULL) | |
584 | return -EINVAL; | |
f7d57453 | 585 | |
1da177e4 LT |
586 | if (ioc_data.type == MPC_SOCKET_INGRESS) { |
587 | in_entry = mpc->in_ops->get(ipaddr, mpc); | |
588 | if (in_entry == NULL || in_entry->entry_state < INGRESS_RESOLVED) { | |
589 | printk("mpoa: (%s) mpc_vcc_attach: did not find RESOLVED entry from ingress cache\n", | |
590 | mpc->dev->name); | |
591 | if (in_entry != NULL) mpc->in_ops->put(in_entry); | |
592 | return -EINVAL; | |
593 | } | |
1da177e4 | 594 | printk("mpoa: (%s) mpc_vcc_attach: attaching ingress SVC, entry = %u.%u.%u.%u\n", |
b4229934 | 595 | mpc->dev->name, NIPQUAD(in_entry->ctrl_info.in_dst_ip)); |
1da177e4 LT |
596 | in_entry->shortcut = vcc; |
597 | mpc->in_ops->put(in_entry); | |
598 | } else { | |
599 | printk("mpoa: (%s) mpc_vcc_attach: attaching egress SVC\n", mpc->dev->name); | |
600 | } | |
601 | ||
602 | vcc->proto_data = mpc->dev; | |
603 | vcc->push = mpc_push; | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
608 | /* | |
609 | * | |
610 | */ | |
611 | static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev) | |
612 | { | |
613 | struct mpoa_client *mpc; | |
614 | in_cache_entry *in_entry; | |
615 | eg_cache_entry *eg_entry; | |
f7d57453 | 616 | |
1da177e4 LT |
617 | mpc = find_mpc_by_lec(dev); |
618 | if (mpc == NULL) { | |
619 | printk("mpoa: (%s) mpc_vcc_close: close for unknown MPC\n", dev->name); | |
620 | return; | |
621 | } | |
622 | ||
623 | dprintk("mpoa: (%s) mpc_vcc_close:\n", dev->name); | |
624 | in_entry = mpc->in_ops->get_by_vcc(vcc, mpc); | |
625 | if (in_entry) { | |
1da177e4 | 626 | dprintk("mpoa: (%s) mpc_vcc_close: ingress SVC closed ip = %u.%u.%u.%u\n", |
b4229934 | 627 | mpc->dev->name, NIPQUAD(in_entry->ctrl_info.in_dst_ip)); |
1da177e4 LT |
628 | in_entry->shortcut = NULL; |
629 | mpc->in_ops->put(in_entry); | |
630 | } | |
631 | eg_entry = mpc->eg_ops->get_by_vcc(vcc, mpc); | |
632 | if (eg_entry) { | |
633 | dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", mpc->dev->name); | |
634 | eg_entry->shortcut = NULL; | |
635 | mpc->eg_ops->put(eg_entry); | |
636 | } | |
637 | ||
638 | if (in_entry == NULL && eg_entry == NULL) | |
639 | dprintk("mpoa: (%s) mpc_vcc_close: unused vcc closed\n", dev->name); | |
640 | ||
641 | return; | |
642 | } | |
643 | ||
644 | static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb) | |
645 | { | |
646 | struct net_device *dev = (struct net_device *)vcc->proto_data; | |
647 | struct sk_buff *new_skb; | |
648 | eg_cache_entry *eg; | |
649 | struct mpoa_client *mpc; | |
30d492da | 650 | __be32 tag; |
1da177e4 | 651 | char *tmp; |
f7d57453 | 652 | |
1da177e4 LT |
653 | ddprintk("mpoa: (%s) mpc_push:\n", dev->name); |
654 | if (skb == NULL) { | |
655 | dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", dev->name); | |
656 | mpc_vcc_close(vcc, dev); | |
657 | return; | |
658 | } | |
f7d57453 | 659 | |
1da177e4 LT |
660 | skb->dev = dev; |
661 | if (memcmp(skb->data, &llc_snap_mpoa_ctrl, sizeof(struct llc_snap_hdr)) == 0) { | |
662 | struct sock *sk = sk_atm(vcc); | |
663 | ||
664 | dprintk("mpoa: (%s) mpc_push: control packet arrived\n", dev->name); | |
665 | /* Pass control packets to daemon */ | |
666 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
667 | sk->sk_data_ready(sk, skb->len); | |
668 | return; | |
669 | } | |
670 | ||
671 | /* data coming over the shortcut */ | |
672 | atm_return(vcc, skb->truesize); | |
673 | ||
674 | mpc = find_mpc_by_lec(dev); | |
675 | if (mpc == NULL) { | |
676 | printk("mpoa: (%s) mpc_push: unknown MPC\n", dev->name); | |
677 | return; | |
678 | } | |
679 | ||
680 | if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */ | |
681 | ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", dev->name); | |
682 | ||
683 | } else if (memcmp(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */ | |
684 | printk("mpoa: (%s) mpc_push: non-tagged data packet arrived\n", dev->name); | |
685 | printk(" mpc_push: non-tagged data unsupported, purging\n"); | |
686 | dev_kfree_skb_any(skb); | |
687 | return; | |
688 | } else { | |
689 | printk("mpoa: (%s) mpc_push: garbage arrived, purging\n", dev->name); | |
690 | dev_kfree_skb_any(skb); | |
691 | return; | |
692 | } | |
693 | ||
694 | tmp = skb->data + sizeof(struct llc_snap_hdr); | |
30d492da | 695 | tag = *(__be32 *)tmp; |
1da177e4 LT |
696 | |
697 | eg = mpc->eg_ops->get_by_tag(tag, mpc); | |
698 | if (eg == NULL) { | |
699 | printk("mpoa: (%s) mpc_push: Didn't find egress cache entry, tag = %u\n", | |
700 | dev->name,tag); | |
701 | purge_egress_shortcut(vcc, NULL); | |
702 | dev_kfree_skb_any(skb); | |
703 | return; | |
704 | } | |
f7d57453 | 705 | |
1da177e4 LT |
706 | /* |
707 | * See if ingress MPC is using shortcut we opened as a return channel. | |
708 | * This means we have a bi-directional vcc opened by us. | |
f7d57453 | 709 | */ |
1da177e4 LT |
710 | if (eg->shortcut == NULL) { |
711 | eg->shortcut = vcc; | |
712 | printk("mpoa: (%s) mpc_push: egress SVC in use\n", dev->name); | |
713 | } | |
714 | ||
715 | skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); /* get rid of LLC/SNAP header */ | |
716 | new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); /* LLC/SNAP is shorter than MAC header :( */ | |
717 | dev_kfree_skb_any(skb); | |
718 | if (new_skb == NULL){ | |
719 | mpc->eg_ops->put(eg); | |
720 | return; | |
721 | } | |
722 | skb_push(new_skb, eg->ctrl_info.DH_length); /* add MAC header */ | |
27d7ff46 ACM |
723 | skb_copy_to_linear_data(new_skb, eg->ctrl_info.DLL_header, |
724 | eg->ctrl_info.DH_length); | |
1da177e4 | 725 | new_skb->protocol = eth_type_trans(new_skb, dev); |
c1d2bbe1 | 726 | skb_reset_network_header(new_skb); |
1da177e4 | 727 | |
eddc9ec5 | 728 | eg->latest_ip_addr = ip_hdr(new_skb)->saddr; |
1da177e4 LT |
729 | eg->packets_rcvd++; |
730 | mpc->eg_ops->put(eg); | |
731 | ||
732 | memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data)); | |
733 | netif_rx(new_skb); | |
734 | ||
735 | return; | |
736 | } | |
737 | ||
738 | static struct atmdev_ops mpc_ops = { /* only send is required */ | |
739 | .close = mpoad_close, | |
740 | .send = msg_from_mpoad | |
741 | }; | |
742 | ||
743 | static struct atm_dev mpc_dev = { | |
744 | .ops = &mpc_ops, | |
745 | .type = "mpc", | |
746 | .number = 42, | |
4ef8d0ae | 747 | .lock = __SPIN_LOCK_UNLOCKED(mpc_dev.lock) |
1da177e4 LT |
748 | /* members not explicitly initialised will be 0 */ |
749 | }; | |
750 | ||
751 | static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg) | |
752 | { | |
753 | struct mpoa_client *mpc; | |
754 | struct lec_priv *priv; | |
755 | int err; | |
f7d57453 | 756 | |
1da177e4 LT |
757 | if (mpcs == NULL) { |
758 | init_timer(&mpc_timer); | |
759 | mpc_timer_refresh(); | |
760 | ||
761 | /* This lets us now how our LECs are doing */ | |
762 | err = register_netdevice_notifier(&mpoa_notifier); | |
763 | if (err < 0) { | |
764 | del_timer(&mpc_timer); | |
765 | return err; | |
766 | } | |
767 | } | |
f7d57453 | 768 | |
1da177e4 LT |
769 | mpc = find_mpc_by_itfnum(arg); |
770 | if (mpc == NULL) { | |
771 | dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", arg); | |
772 | mpc = alloc_mpc(); | |
773 | if (mpc == NULL) | |
774 | return -ENOMEM; | |
775 | mpc->dev_num = arg; | |
776 | mpc->dev = find_lec_by_itfnum(arg); /* NULL if there was no lec */ | |
777 | } | |
778 | if (mpc->mpoad_vcc) { | |
779 | printk("mpoa: mpoad_attach: mpoad is already present for itf %d\n", arg); | |
780 | return -EADDRINUSE; | |
781 | } | |
782 | ||
783 | if (mpc->dev) { /* check if the lec is LANE2 capable */ | |
784 | priv = (struct lec_priv *)mpc->dev->priv; | |
785 | if (priv->lane_version < 2) { | |
786 | dev_put(mpc->dev); | |
787 | mpc->dev = NULL; | |
788 | } else | |
f7d57453 | 789 | priv->lane2_ops->associate_indicator = lane2_assoc_ind; |
1da177e4 LT |
790 | } |
791 | ||
792 | mpc->mpoad_vcc = vcc; | |
793 | vcc->dev = &mpc_dev; | |
794 | vcc_insert_socket(sk_atm(vcc)); | |
795 | set_bit(ATM_VF_META,&vcc->flags); | |
796 | set_bit(ATM_VF_READY,&vcc->flags); | |
797 | ||
798 | if (mpc->dev) { | |
799 | char empty[ATM_ESA_LEN]; | |
800 | memset(empty, 0, ATM_ESA_LEN); | |
f7d57453 | 801 | |
1da177e4 LT |
802 | start_mpc(mpc, mpc->dev); |
803 | /* set address if mpcd e.g. gets killed and restarted. | |
804 | * If we do not do it now we have to wait for the next LE_ARP | |
805 | */ | |
806 | if ( memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0 ) | |
807 | send_set_mps_ctrl_addr(mpc->mps_ctrl_addr, mpc); | |
808 | } | |
809 | ||
810 | __module_get(THIS_MODULE); | |
811 | return arg; | |
812 | } | |
813 | ||
814 | static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc) | |
815 | { | |
816 | struct k_message mesg; | |
817 | ||
818 | memcpy (mpc->mps_ctrl_addr, addr, ATM_ESA_LEN); | |
f7d57453 | 819 | |
1da177e4 LT |
820 | mesg.type = SET_MPS_CTRL_ADDR; |
821 | memcpy(mesg.MPS_ctrl, addr, ATM_ESA_LEN); | |
822 | msg_to_mpoad(&mesg, mpc); | |
823 | ||
824 | return; | |
825 | } | |
826 | ||
827 | static void mpoad_close(struct atm_vcc *vcc) | |
828 | { | |
829 | struct mpoa_client *mpc; | |
830 | struct sk_buff *skb; | |
831 | ||
832 | mpc = find_mpc_by_vcc(vcc); | |
833 | if (mpc == NULL) { | |
834 | printk("mpoa: mpoad_close: did not find MPC\n"); | |
835 | return; | |
836 | } | |
837 | if (!mpc->mpoad_vcc) { | |
838 | printk("mpoa: mpoad_close: close for non-present mpoad\n"); | |
839 | return; | |
840 | } | |
f7d57453 | 841 | |
1da177e4 LT |
842 | mpc->mpoad_vcc = NULL; |
843 | if (mpc->dev) { | |
844 | struct lec_priv *priv = (struct lec_priv *)mpc->dev->priv; | |
845 | priv->lane2_ops->associate_indicator = NULL; | |
846 | stop_mpc(mpc); | |
847 | dev_put(mpc->dev); | |
848 | } | |
849 | ||
850 | mpc->in_ops->destroy_cache(mpc); | |
851 | mpc->eg_ops->destroy_cache(mpc); | |
852 | ||
853 | while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue))) { | |
854 | atm_return(vcc, skb->truesize); | |
855 | kfree_skb(skb); | |
856 | } | |
f7d57453 | 857 | |
1da177e4 LT |
858 | printk("mpoa: (%s) going down\n", |
859 | (mpc->dev) ? mpc->dev->name : "<unknown>"); | |
860 | module_put(THIS_MODULE); | |
861 | ||
862 | return; | |
863 | } | |
864 | ||
865 | /* | |
866 | * | |
867 | */ | |
868 | static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb) | |
869 | { | |
f7d57453 | 870 | |
1da177e4 LT |
871 | struct mpoa_client *mpc = find_mpc_by_vcc(vcc); |
872 | struct k_message *mesg = (struct k_message*)skb->data; | |
873 | atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); | |
f7d57453 | 874 | |
1da177e4 LT |
875 | if (mpc == NULL) { |
876 | printk("mpoa: msg_from_mpoad: no mpc found\n"); | |
877 | return 0; | |
878 | } | |
879 | dprintk("mpoa: (%s) msg_from_mpoad:", (mpc->dev) ? mpc->dev->name : "<unknown>"); | |
880 | switch(mesg->type) { | |
881 | case MPOA_RES_REPLY_RCVD: | |
882 | dprintk(" mpoa_res_reply_rcvd\n"); | |
883 | MPOA_res_reply_rcvd(mesg, mpc); | |
884 | break; | |
885 | case MPOA_TRIGGER_RCVD: | |
886 | dprintk(" mpoa_trigger_rcvd\n"); | |
887 | MPOA_trigger_rcvd(mesg, mpc); | |
888 | break; | |
889 | case INGRESS_PURGE_RCVD: | |
890 | dprintk(" nhrp_purge_rcvd\n"); | |
891 | ingress_purge_rcvd(mesg, mpc); | |
892 | break; | |
893 | case EGRESS_PURGE_RCVD: | |
894 | dprintk(" egress_purge_reply_rcvd\n"); | |
895 | egress_purge_rcvd(mesg, mpc); | |
896 | break; | |
897 | case MPS_DEATH: | |
898 | dprintk(" mps_death\n"); | |
899 | mps_death(mesg, mpc); | |
900 | break; | |
901 | case CACHE_IMPOS_RCVD: | |
902 | dprintk(" cache_impos_rcvd\n"); | |
903 | MPOA_cache_impos_rcvd(mesg, mpc); | |
904 | break; | |
905 | case SET_MPC_CTRL_ADDR: | |
906 | dprintk(" set_mpc_ctrl_addr\n"); | |
907 | set_mpc_ctrl_addr_rcvd(mesg, mpc); | |
908 | break; | |
909 | case SET_MPS_MAC_ADDR: | |
910 | dprintk(" set_mps_mac_addr\n"); | |
911 | set_mps_mac_addr_rcvd(mesg, mpc); | |
912 | break; | |
913 | case CLEAN_UP_AND_EXIT: | |
914 | dprintk(" clean_up_and_exit\n"); | |
915 | clean_up(mesg, mpc, DIE); | |
916 | break; | |
917 | case RELOAD: | |
918 | dprintk(" reload\n"); | |
919 | clean_up(mesg, mpc, RELOAD); | |
920 | break; | |
921 | case SET_MPC_PARAMS: | |
922 | dprintk(" set_mpc_params\n"); | |
923 | mpc->parameters = mesg->content.params; | |
924 | break; | |
925 | default: | |
926 | dprintk(" unknown message %d\n", mesg->type); | |
927 | break; | |
928 | } | |
929 | kfree_skb(skb); | |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
934 | /* Remember that this function may not do things that sleep */ | |
935 | int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc) | |
936 | { | |
937 | struct sk_buff *skb; | |
938 | struct sock *sk; | |
939 | ||
940 | if (mpc == NULL || !mpc->mpoad_vcc) { | |
941 | printk("mpoa: msg_to_mpoad: mesg %d to a non-existent mpoad\n", mesg->type); | |
942 | return -ENXIO; | |
943 | } | |
944 | ||
945 | skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); | |
946 | if (skb == NULL) | |
947 | return -ENOMEM; | |
948 | skb_put(skb, sizeof(struct k_message)); | |
27d7ff46 | 949 | skb_copy_to_linear_data(skb, mesg, sizeof(*mesg)); |
1da177e4 | 950 | atm_force_charge(mpc->mpoad_vcc, skb->truesize); |
f7d57453 | 951 | |
1da177e4 LT |
952 | sk = sk_atm(mpc->mpoad_vcc); |
953 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
954 | sk->sk_data_ready(sk, skb->len); | |
955 | ||
956 | return 0; | |
957 | } | |
958 | ||
959 | static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev_ptr) | |
960 | { | |
961 | struct net_device *dev; | |
962 | struct mpoa_client *mpc; | |
963 | struct lec_priv *priv; | |
964 | ||
965 | dev = (struct net_device *)dev_ptr; | |
e9dc8653 | 966 | |
721499e8 | 967 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
968 | return NOTIFY_DONE; |
969 | ||
1da177e4 LT |
970 | if (dev->name == NULL || strncmp(dev->name, "lec", 3)) |
971 | return NOTIFY_DONE; /* we are only interested in lec:s */ | |
f7d57453 | 972 | |
1da177e4 LT |
973 | switch (event) { |
974 | case NETDEV_REGISTER: /* a new lec device was allocated */ | |
975 | priv = (struct lec_priv *)dev->priv; | |
976 | if (priv->lane_version < 2) | |
977 | break; | |
978 | priv->lane2_ops->associate_indicator = lane2_assoc_ind; | |
979 | mpc = find_mpc_by_itfnum(priv->itfnum); | |
980 | if (mpc == NULL) { | |
981 | dprintk("mpoa: mpoa_event_listener: allocating new mpc for %s\n", | |
982 | dev->name); | |
983 | mpc = alloc_mpc(); | |
984 | if (mpc == NULL) { | |
985 | printk("mpoa: mpoa_event_listener: no new mpc"); | |
986 | break; | |
987 | } | |
988 | } | |
989 | mpc->dev_num = priv->itfnum; | |
990 | mpc->dev = dev; | |
991 | dev_hold(dev); | |
992 | dprintk("mpoa: (%s) was initialized\n", dev->name); | |
993 | break; | |
994 | case NETDEV_UNREGISTER: | |
995 | /* the lec device was deallocated */ | |
996 | mpc = find_mpc_by_lec(dev); | |
997 | if (mpc == NULL) | |
998 | break; | |
999 | dprintk("mpoa: device (%s) was deallocated\n", dev->name); | |
1000 | stop_mpc(mpc); | |
1001 | dev_put(mpc->dev); | |
1002 | mpc->dev = NULL; | |
1003 | break; | |
1004 | case NETDEV_UP: | |
1005 | /* the dev was ifconfig'ed up */ | |
1006 | mpc = find_mpc_by_lec(dev); | |
1007 | if (mpc == NULL) | |
1008 | break; | |
1009 | if (mpc->mpoad_vcc != NULL) { | |
1010 | start_mpc(mpc, dev); | |
1011 | } | |
1012 | break; | |
1013 | case NETDEV_DOWN: | |
1014 | /* the dev was ifconfig'ed down */ | |
1015 | /* this means that the flow of packets from the | |
1016 | * upper layer stops | |
1017 | */ | |
1018 | mpc = find_mpc_by_lec(dev); | |
1019 | if (mpc == NULL) | |
1020 | break; | |
1021 | if (mpc->mpoad_vcc != NULL) { | |
1022 | stop_mpc(mpc); | |
1023 | } | |
1024 | break; | |
1025 | case NETDEV_REBOOT: | |
1026 | case NETDEV_CHANGE: | |
1027 | case NETDEV_CHANGEMTU: | |
1028 | case NETDEV_CHANGEADDR: | |
1029 | case NETDEV_GOING_DOWN: | |
1030 | break; | |
1031 | default: | |
1032 | break; | |
1033 | } | |
1034 | ||
1035 | return NOTIFY_DONE; | |
1036 | } | |
1037 | ||
1038 | /* | |
1039 | * Functions which are called after a message is received from mpcd. | |
1040 | * Msg is reused on purpose. | |
1041 | */ | |
1042 | ||
1043 | ||
1044 | static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc) | |
1045 | { | |
30d492da | 1046 | __be32 dst_ip = msg->content.in_info.in_dst_ip; |
1da177e4 LT |
1047 | in_cache_entry *entry; |
1048 | ||
1049 | entry = mpc->in_ops->get(dst_ip, mpc); | |
1050 | if(entry == NULL){ | |
1051 | entry = mpc->in_ops->add_entry(dst_ip, mpc); | |
1052 | entry->entry_state = INGRESS_RESOLVING; | |
1053 | msg->type = SND_MPOA_RES_RQST; | |
1054 | msg->content.in_info = entry->ctrl_info; | |
1055 | msg_to_mpoad(msg, mpc); | |
1056 | do_gettimeofday(&(entry->reply_wait)); | |
1057 | mpc->in_ops->put(entry); | |
1058 | return; | |
1059 | } | |
f7d57453 | 1060 | |
1da177e4 LT |
1061 | if(entry->entry_state == INGRESS_INVALID){ |
1062 | entry->entry_state = INGRESS_RESOLVING; | |
1063 | msg->type = SND_MPOA_RES_RQST; | |
1064 | msg->content.in_info = entry->ctrl_info; | |
1065 | msg_to_mpoad(msg, mpc); | |
1066 | do_gettimeofday(&(entry->reply_wait)); | |
1067 | mpc->in_ops->put(entry); | |
1068 | return; | |
1069 | } | |
f7d57453 | 1070 | |
1da177e4 LT |
1071 | printk("mpoa: (%s) MPOA_trigger_rcvd: entry already in resolving state\n", |
1072 | (mpc->dev) ? mpc->dev->name : "<unknown>"); | |
1073 | mpc->in_ops->put(entry); | |
1074 | return; | |
1075 | } | |
1076 | ||
1077 | /* | |
1078 | * Things get complicated because we have to check if there's an egress | |
f7d57453 | 1079 | * shortcut with suitable traffic parameters we could use. |
1da177e4 LT |
1080 | */ |
1081 | static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_client *client, in_cache_entry *entry) | |
1082 | { | |
30d492da | 1083 | __be32 dst_ip = msg->content.in_info.in_dst_ip; |
1da177e4 LT |
1084 | struct atm_mpoa_qos *qos = atm_mpoa_search_qos(dst_ip); |
1085 | eg_cache_entry *eg_entry = client->eg_ops->get_by_src_ip(dst_ip, client); | |
1086 | ||
1087 | if(eg_entry && eg_entry->shortcut){ | |
1088 | if(eg_entry->shortcut->qos.txtp.traffic_class & | |
1089 | msg->qos.txtp.traffic_class & | |
1090 | (qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)){ | |
1091 | if(eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR) | |
1092 | entry->shortcut = eg_entry->shortcut; | |
1093 | else if(eg_entry->shortcut->qos.txtp.max_pcr > 0) | |
1094 | entry->shortcut = eg_entry->shortcut; | |
1095 | } | |
f7d57453 | 1096 | if(entry->shortcut){ |
ff7512e1 | 1097 | dprintk("mpoa: (%s) using egress SVC to reach %u.%u.%u.%u\n",client->dev->name, NIPQUAD(dst_ip)); |
1da177e4 LT |
1098 | client->eg_ops->put(eg_entry); |
1099 | return; | |
1100 | } | |
1101 | } | |
1102 | if (eg_entry != NULL) | |
1103 | client->eg_ops->put(eg_entry); | |
1104 | ||
1105 | /* No luck in the egress cache we must open an ingress SVC */ | |
1106 | msg->type = OPEN_INGRESS_SVC; | |
1107 | if (qos && (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class)) | |
1108 | { | |
1109 | msg->qos = qos->qos; | |
1110 | printk("mpoa: (%s) trying to get a CBR shortcut\n",client->dev->name); | |
f7d57453 | 1111 | } |
1da177e4 LT |
1112 | else memset(&msg->qos,0,sizeof(struct atm_qos)); |
1113 | msg_to_mpoad(msg, client); | |
1114 | return; | |
1115 | } | |
1116 | ||
1117 | static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc) | |
1118 | { | |
30d492da | 1119 | __be32 dst_ip = msg->content.in_info.in_dst_ip; |
1da177e4 | 1120 | in_cache_entry *entry = mpc->in_ops->get(dst_ip, mpc); |
1e4fd51e | 1121 | |
ff7512e1 | 1122 | dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %u.%u.%u.%u\n", mpc->dev->name, NIPQUAD(dst_ip)); |
1da177e4 LT |
1123 | ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", mpc->dev->name, entry); |
1124 | if(entry == NULL){ | |
1125 | printk("\nmpoa: (%s) ARGH, received res. reply for an entry that doesn't exist.\n", mpc->dev->name); | |
1126 | return; | |
1127 | } | |
f7d57453 | 1128 | ddprintk(" entry_state = %d ", entry->entry_state); |
1da177e4 LT |
1129 | |
1130 | if (entry->entry_state == INGRESS_RESOLVED) { | |
1131 | printk("\nmpoa: (%s) MPOA_res_reply_rcvd for RESOLVED entry!\n", mpc->dev->name); | |
1132 | mpc->in_ops->put(entry); | |
1133 | return; | |
1134 | } | |
1135 | ||
1136 | entry->ctrl_info = msg->content.in_info; | |
1137 | do_gettimeofday(&(entry->tv)); | |
1138 | do_gettimeofday(&(entry->reply_wait)); /* Used in refreshing func from now on */ | |
1139 | entry->refresh_time = 0; | |
1140 | ddprintk("entry->shortcut = %p\n", entry->shortcut); | |
1141 | ||
1142 | if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL){ | |
f7d57453 | 1143 | entry->entry_state = INGRESS_RESOLVED; |
1da177e4 LT |
1144 | mpc->in_ops->put(entry); |
1145 | return; /* Shortcut already open... */ | |
1146 | } | |
1147 | ||
1148 | if (entry->shortcut != NULL) { | |
1149 | printk("mpoa: (%s) MPOA_res_reply_rcvd: entry->shortcut != NULL, impossible!\n", | |
1150 | mpc->dev->name); | |
1151 | mpc->in_ops->put(entry); | |
1152 | return; | |
1153 | } | |
f7d57453 | 1154 | |
1da177e4 LT |
1155 | check_qos_and_open_shortcut(msg, mpc, entry); |
1156 | entry->entry_state = INGRESS_RESOLVED; | |
1157 | mpc->in_ops->put(entry); | |
1158 | ||
1159 | return; | |
1160 | ||
1161 | } | |
1162 | ||
1163 | static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) | |
1164 | { | |
30d492da AV |
1165 | __be32 dst_ip = msg->content.in_info.in_dst_ip; |
1166 | __be32 mask = msg->ip_mask; | |
1da177e4 LT |
1167 | in_cache_entry *entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask); |
1168 | ||
1169 | if(entry == NULL){ | |
1170 | printk("mpoa: (%s) ingress_purge_rcvd: purge for a non-existing entry, ", mpc->dev->name); | |
b4229934 | 1171 | printk("ip = %u.%u.%u.%u\n", NIPQUAD(dst_ip)); |
1da177e4 LT |
1172 | return; |
1173 | } | |
1174 | ||
1175 | do { | |
1176 | dprintk("mpoa: (%s) ingress_purge_rcvd: removing an ingress entry, ip = %u.%u.%u.%u\n" , | |
b4229934 | 1177 | mpc->dev->name, NIPQUAD(dst_ip)); |
1da177e4 LT |
1178 | write_lock_bh(&mpc->ingress_lock); |
1179 | mpc->in_ops->remove_entry(entry, mpc); | |
1180 | write_unlock_bh(&mpc->ingress_lock); | |
1181 | mpc->in_ops->put(entry); | |
1182 | entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask); | |
1183 | } while (entry != NULL); | |
1184 | ||
1185 | return; | |
f7d57453 | 1186 | } |
1da177e4 LT |
1187 | |
1188 | static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) | |
1189 | { | |
30d492da | 1190 | __be32 cache_id = msg->content.eg_info.cache_id; |
1da177e4 | 1191 | eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(cache_id, mpc); |
f7d57453 | 1192 | |
1da177e4 LT |
1193 | if (entry == NULL) { |
1194 | dprintk("mpoa: (%s) egress_purge_rcvd: purge for a non-existing entry\n", mpc->dev->name); | |
1195 | return; | |
1196 | } | |
1197 | ||
1198 | write_lock_irq(&mpc->egress_lock); | |
1199 | mpc->eg_ops->remove_entry(entry, mpc); | |
1200 | write_unlock_irq(&mpc->egress_lock); | |
1201 | ||
1202 | mpc->eg_ops->put(entry); | |
1203 | ||
1204 | return; | |
f7d57453 | 1205 | } |
1da177e4 LT |
1206 | |
1207 | static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry) | |
1208 | { | |
1209 | struct sock *sk; | |
1210 | struct k_message *purge_msg; | |
1211 | struct sk_buff *skb; | |
1212 | ||
1213 | dprintk("mpoa: purge_egress_shortcut: entering\n"); | |
1214 | if (vcc == NULL) { | |
1215 | printk("mpoa: purge_egress_shortcut: vcc == NULL\n"); | |
1216 | return; | |
1217 | } | |
1218 | ||
1219 | skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); | |
1220 | if (skb == NULL) { | |
1221 | printk("mpoa: purge_egress_shortcut: out of memory\n"); | |
1222 | return; | |
1223 | } | |
1224 | ||
1225 | skb_put(skb, sizeof(struct k_message)); | |
1226 | memset(skb->data, 0, sizeof(struct k_message)); | |
1227 | purge_msg = (struct k_message *)skb->data; | |
1228 | purge_msg->type = DATA_PLANE_PURGE; | |
1229 | if (entry != NULL) | |
1230 | purge_msg->content.eg_info = entry->ctrl_info; | |
1231 | ||
1232 | atm_force_charge(vcc, skb->truesize); | |
1233 | ||
1234 | sk = sk_atm(vcc); | |
1235 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
1236 | sk->sk_data_ready(sk, skb->len); | |
1237 | dprintk("mpoa: purge_egress_shortcut: exiting:\n"); | |
1238 | ||
1239 | return; | |
1240 | } | |
1241 | ||
1242 | /* | |
1243 | * Our MPS died. Tell our daemon to send NHRP data plane purge to each | |
1244 | * of the egress shortcuts we have. | |
1245 | */ | |
1246 | static void mps_death( struct k_message * msg, struct mpoa_client * mpc ) | |
1247 | { | |
1248 | eg_cache_entry *entry; | |
1249 | ||
1250 | dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name); | |
1251 | ||
1252 | if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){ | |
1253 | printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name); | |
1254 | return; | |
1255 | } | |
1256 | ||
1257 | /* FIXME: This knows too much of the cache structure */ | |
1258 | read_lock_irq(&mpc->egress_lock); | |
1259 | entry = mpc->eg_cache; | |
1260 | while (entry != NULL) { | |
1261 | purge_egress_shortcut(entry->shortcut, entry); | |
1262 | entry = entry->next; | |
1263 | } | |
1264 | read_unlock_irq(&mpc->egress_lock); | |
1265 | ||
1266 | mpc->in_ops->destroy_cache(mpc); | |
1267 | mpc->eg_ops->destroy_cache(mpc); | |
1268 | ||
1269 | return; | |
1270 | } | |
1271 | ||
1272 | static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * mpc) | |
1273 | { | |
1274 | uint16_t holding_time; | |
1275 | eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(msg->content.eg_info.cache_id, mpc); | |
f7d57453 | 1276 | |
1da177e4 LT |
1277 | holding_time = msg->content.eg_info.holding_time; |
1278 | dprintk("mpoa: (%s) MPOA_cache_impos_rcvd: entry = %p, holding_time = %u\n", | |
1279 | mpc->dev->name, entry, holding_time); | |
1280 | if(entry == NULL && holding_time) { | |
1281 | entry = mpc->eg_ops->add_entry(msg, mpc); | |
1282 | mpc->eg_ops->put(entry); | |
1283 | return; | |
1284 | } | |
1285 | if(holding_time){ | |
1286 | mpc->eg_ops->update(entry, holding_time); | |
1287 | return; | |
1288 | } | |
f7d57453 | 1289 | |
1da177e4 LT |
1290 | write_lock_irq(&mpc->egress_lock); |
1291 | mpc->eg_ops->remove_entry(entry, mpc); | |
1292 | write_unlock_irq(&mpc->egress_lock); | |
1293 | ||
1294 | mpc->eg_ops->put(entry); | |
f7d57453 | 1295 | |
1da177e4 LT |
1296 | return; |
1297 | } | |
1298 | ||
1299 | static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc) | |
1300 | { | |
1301 | struct lec_priv *priv; | |
1302 | int i, retval ; | |
1303 | ||
1304 | uint8_t tlv[4 + 1 + 1 + 1 + ATM_ESA_LEN]; | |
1305 | ||
1306 | tlv[0] = 00; tlv[1] = 0xa0; tlv[2] = 0x3e; tlv[3] = 0x2a; /* type */ | |
1307 | tlv[4] = 1 + 1 + ATM_ESA_LEN; /* length */ | |
1308 | tlv[5] = 0x02; /* MPOA client */ | |
1309 | tlv[6] = 0x00; /* number of MPS MAC addresses */ | |
1310 | ||
1311 | memcpy(&tlv[7], mesg->MPS_ctrl, ATM_ESA_LEN); /* MPC ctrl ATM addr */ | |
1312 | memcpy(mpc->our_ctrl_addr, mesg->MPS_ctrl, ATM_ESA_LEN); | |
1313 | ||
1314 | dprintk("mpoa: (%s) setting MPC ctrl ATM address to ", | |
1315 | (mpc->dev) ? mpc->dev->name : "<unknown>"); | |
1316 | for (i = 7; i < sizeof(tlv); i++) | |
1317 | dprintk("%02x ", tlv[i]); | |
1318 | dprintk("\n"); | |
1319 | ||
1320 | if (mpc->dev) { | |
1321 | priv = (struct lec_priv *)mpc->dev->priv; | |
1322 | retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv)); | |
1323 | if (retval == 0) | |
1324 | printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name); | |
1325 | retval = priv->lane2_ops->resolve(mpc->dev, NULL, 1, NULL, NULL); | |
1326 | if (retval < 0) | |
1327 | printk("mpoa: (%s) targetless LE_ARP request failed\n", mpc->dev->name); | |
1328 | } | |
1329 | ||
1330 | return; | |
1331 | } | |
1332 | ||
1333 | static void set_mps_mac_addr_rcvd(struct k_message *msg, struct mpoa_client *client) | |
1334 | { | |
1335 | ||
1336 | if(client->number_of_mps_macs) | |
1337 | kfree(client->mps_macs); | |
1338 | client->number_of_mps_macs = 0; | |
2afe37cd | 1339 | client->mps_macs = kmemdup(msg->MPS_ctrl, ETH_ALEN, GFP_KERNEL); |
1da177e4 LT |
1340 | if (client->mps_macs == NULL) { |
1341 | printk("mpoa: set_mps_mac_addr_rcvd: out of memory\n"); | |
1342 | return; | |
1343 | } | |
1344 | client->number_of_mps_macs = 1; | |
f7d57453 | 1345 | |
1da177e4 LT |
1346 | return; |
1347 | } | |
1348 | ||
1349 | /* | |
1350 | * purge egress cache and tell daemon to 'action' (DIE, RELOAD) | |
1351 | */ | |
1352 | static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action) | |
1353 | { | |
1354 | ||
1355 | eg_cache_entry *entry; | |
1356 | msg->type = SND_EGRESS_PURGE; | |
1357 | ||
1358 | ||
1359 | /* FIXME: This knows too much of the cache structure */ | |
1360 | read_lock_irq(&mpc->egress_lock); | |
1361 | entry = mpc->eg_cache; | |
1362 | while (entry != NULL){ | |
1363 | msg->content.eg_info = entry->ctrl_info; | |
1364 | dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id); | |
1365 | msg_to_mpoad(msg, mpc); | |
1366 | entry = entry->next; | |
1367 | } | |
1368 | read_unlock_irq(&mpc->egress_lock); | |
1369 | ||
1370 | msg->type = action; | |
1371 | msg_to_mpoad(msg, mpc); | |
1372 | return; | |
1373 | } | |
1374 | ||
1375 | static void mpc_timer_refresh(void) | |
1376 | { | |
1377 | mpc_timer.expires = jiffies + (MPC_P2 * HZ); | |
1378 | mpc_timer.data = mpc_timer.expires; | |
1379 | mpc_timer.function = mpc_cache_check; | |
1380 | add_timer(&mpc_timer); | |
f7d57453 | 1381 | |
1da177e4 LT |
1382 | return; |
1383 | } | |
1384 | ||
1385 | static void mpc_cache_check( unsigned long checking_time ) | |
1386 | { | |
1387 | struct mpoa_client *mpc = mpcs; | |
1388 | static unsigned long previous_resolving_check_time; | |
1389 | static unsigned long previous_refresh_time; | |
f7d57453 | 1390 | |
1da177e4 LT |
1391 | while( mpc != NULL ){ |
1392 | mpc->in_ops->clear_count(mpc); | |
1393 | mpc->eg_ops->clear_expired(mpc); | |
1394 | if(checking_time - previous_resolving_check_time > mpc->parameters.mpc_p4 * HZ ){ | |
1395 | mpc->in_ops->check_resolving(mpc); | |
1396 | previous_resolving_check_time = checking_time; | |
1397 | } | |
1398 | if(checking_time - previous_refresh_time > mpc->parameters.mpc_p5 * HZ ){ | |
1399 | mpc->in_ops->refresh(mpc); | |
1400 | previous_refresh_time = checking_time; | |
1401 | } | |
1402 | mpc = mpc->next; | |
1403 | } | |
1404 | mpc_timer_refresh(); | |
f7d57453 | 1405 | |
1da177e4 LT |
1406 | return; |
1407 | } | |
1408 | ||
1409 | static int atm_mpoa_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1410 | { | |
1411 | int err = 0; | |
1412 | struct atm_vcc *vcc = ATM_SD(sock); | |
1413 | ||
1414 | if (cmd != ATMMPC_CTRL && cmd != ATMMPC_DATA) | |
1415 | return -ENOIOCTLCMD; | |
1416 | ||
1417 | if (!capable(CAP_NET_ADMIN)) | |
1418 | return -EPERM; | |
1419 | ||
1420 | switch (cmd) { | |
1421 | case ATMMPC_CTRL: | |
1422 | err = atm_mpoa_mpoad_attach(vcc, (int)arg); | |
1423 | if (err >= 0) | |
1424 | sock->state = SS_CONNECTED; | |
1425 | break; | |
1426 | case ATMMPC_DATA: | |
1427 | err = atm_mpoa_vcc_attach(vcc, (void __user *)arg); | |
1428 | break; | |
1429 | default: | |
1430 | break; | |
1431 | } | |
1432 | return err; | |
1433 | } | |
1434 | ||
1435 | ||
1436 | static struct atm_ioctl atm_ioctl_ops = { | |
1437 | .owner = THIS_MODULE, | |
1438 | .ioctl = atm_mpoa_ioctl, | |
1439 | }; | |
1440 | ||
1441 | static __init int atm_mpoa_init(void) | |
1442 | { | |
1443 | register_atm_ioctl(&atm_ioctl_ops); | |
1444 | ||
1da177e4 LT |
1445 | if (mpc_proc_init() != 0) |
1446 | printk(KERN_INFO "mpoa: failed to initialize /proc/mpoa\n"); | |
1da177e4 LT |
1447 | |
1448 | printk("mpc.c: " __DATE__ " " __TIME__ " initialized\n"); | |
1449 | ||
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | static void __exit atm_mpoa_cleanup(void) | |
1454 | { | |
1455 | struct mpoa_client *mpc, *tmp; | |
1456 | struct atm_mpoa_qos *qos, *nextqos; | |
1457 | struct lec_priv *priv; | |
1458 | ||
1da177e4 | 1459 | mpc_proc_clean(); |
1da177e4 LT |
1460 | |
1461 | del_timer(&mpc_timer); | |
1462 | unregister_netdevice_notifier(&mpoa_notifier); | |
1463 | deregister_atm_ioctl(&atm_ioctl_ops); | |
1464 | ||
1465 | mpc = mpcs; | |
1466 | mpcs = NULL; | |
1467 | while (mpc != NULL) { | |
1468 | tmp = mpc->next; | |
1469 | if (mpc->dev != NULL) { | |
1470 | stop_mpc(mpc); | |
1471 | priv = (struct lec_priv *)mpc->dev->priv; | |
1472 | if (priv->lane2_ops != NULL) | |
1473 | priv->lane2_ops->associate_indicator = NULL; | |
1474 | } | |
1475 | ddprintk("mpoa: cleanup_module: about to clear caches\n"); | |
1476 | mpc->in_ops->destroy_cache(mpc); | |
1477 | mpc->eg_ops->destroy_cache(mpc); | |
1478 | ddprintk("mpoa: cleanup_module: caches cleared\n"); | |
1479 | kfree(mpc->mps_macs); | |
1480 | memset(mpc, 0, sizeof(struct mpoa_client)); | |
1481 | ddprintk("mpoa: cleanup_module: about to kfree %p\n", mpc); | |
1482 | kfree(mpc); | |
1483 | ddprintk("mpoa: cleanup_module: next mpc is at %p\n", tmp); | |
1484 | mpc = tmp; | |
1485 | } | |
1486 | ||
1487 | qos = qos_head; | |
1488 | qos_head = NULL; | |
1489 | while (qos != NULL) { | |
1490 | nextqos = qos->next; | |
1491 | dprintk("mpoa: cleanup_module: freeing qos entry %p\n", qos); | |
1492 | kfree(qos); | |
1493 | qos = nextqos; | |
1494 | } | |
1495 | ||
1496 | return; | |
1497 | } | |
1498 | ||
1499 | module_init(atm_mpoa_init); | |
1500 | module_exit(atm_mpoa_cleanup); | |
1501 | ||
1502 | MODULE_LICENSE("GPL"); |