Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
f7d57453 | 2 | * lec.c: Lan Emulation driver |
1da177e4 | 3 | * |
d44f7746 | 4 | * Marko Kiiskila <mkiiskila@yahoo.com> |
1da177e4 LT |
5 | */ |
6 | ||
1da177e4 LT |
7 | #include <linux/kernel.h> |
8 | #include <linux/bitops.h> | |
4fc268d2 | 9 | #include <linux/capability.h> |
1da177e4 LT |
10 | |
11 | /* We are ethernet device */ | |
12 | #include <linux/if_ether.h> | |
13 | #include <linux/netdevice.h> | |
14 | #include <linux/etherdevice.h> | |
15 | #include <net/sock.h> | |
16 | #include <linux/skbuff.h> | |
17 | #include <linux/ip.h> | |
18 | #include <asm/byteorder.h> | |
19 | #include <asm/uaccess.h> | |
20 | #include <net/arp.h> | |
21 | #include <net/dst.h> | |
22 | #include <linux/proc_fs.h> | |
23 | #include <linux/spinlock.h> | |
1da177e4 LT |
24 | #include <linux/seq_file.h> |
25 | ||
26 | /* TokenRing if needed */ | |
27 | #ifdef CONFIG_TR | |
28 | #include <linux/trdevice.h> | |
29 | #endif | |
30 | ||
31 | /* And atm device */ | |
32 | #include <linux/atmdev.h> | |
33 | #include <linux/atmlec.h> | |
34 | ||
35 | /* Proxy LEC knows about bridging */ | |
36 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) | |
37 | #include <linux/if_bridge.h> | |
38 | #include "../bridge/br_private.h" | |
39 | ||
d44f7746 | 40 | static unsigned char bridge_ula_lec[] = { 0x01, 0x80, 0xc2, 0x00, 0x00 }; |
1da177e4 LT |
41 | #endif |
42 | ||
43 | /* Modular too */ | |
44 | #include <linux/module.h> | |
45 | #include <linux/init.h> | |
46 | ||
47 | #include "lec.h" | |
48 | #include "lec_arpc.h" | |
49 | #include "resources.h" | |
50 | ||
d44f7746 CW |
51 | #define DUMP_PACKETS 0 /* |
52 | * 0 = None, | |
53 | * 1 = 30 first bytes | |
54 | * 2 = Whole packet | |
55 | */ | |
1da177e4 | 56 | |
d44f7746 CW |
57 | #define LEC_UNRES_QUE_LEN 8 /* |
58 | * number of tx packets to queue for a | |
59 | * single destination while waiting for SVC | |
60 | */ | |
1da177e4 LT |
61 | |
62 | static int lec_open(struct net_device *dev); | |
63 | static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
64 | static int lec_close(struct net_device *dev); | |
1da177e4 | 65 | static void lec_init(struct net_device *dev); |
d44f7746 | 66 | static struct lec_arp_table *lec_arp_find(struct lec_priv *priv, |
61c33e01 | 67 | const unsigned char *mac_addr); |
1da177e4 | 68 | static int lec_arp_remove(struct lec_priv *priv, |
d44f7746 | 69 | struct lec_arp_table *to_remove); |
1da177e4 | 70 | /* LANE2 functions */ |
61c33e01 MBJ |
71 | static void lane2_associate_ind(struct net_device *dev, const u8 *mac_address, |
72 | const u8 *tlvs, u32 sizeoftlvs); | |
73 | static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force, | |
d44f7746 | 74 | u8 **tlvs, u32 *sizeoftlvs); |
61c33e01 MBJ |
75 | static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst, |
76 | const u8 *tlvs, u32 sizeoftlvs); | |
1da177e4 | 77 | |
61c33e01 | 78 | static int lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr, |
1da177e4 LT |
79 | unsigned long permanent); |
80 | static void lec_arp_check_empties(struct lec_priv *priv, | |
81 | struct atm_vcc *vcc, struct sk_buff *skb); | |
82 | static void lec_arp_destroy(struct lec_priv *priv); | |
83 | static void lec_arp_init(struct lec_priv *priv); | |
d44f7746 | 84 | static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv, |
61c33e01 | 85 | const unsigned char *mac_to_find, |
1da177e4 LT |
86 | int is_rdesc, |
87 | struct lec_arp_table **ret_entry); | |
61c33e01 MBJ |
88 | static void lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr, |
89 | const unsigned char *atm_addr, unsigned long remoteflag, | |
1da177e4 LT |
90 | unsigned int targetless_le_arp); |
91 | static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id); | |
92 | static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc); | |
93 | static void lec_set_flush_tran_id(struct lec_priv *priv, | |
61c33e01 | 94 | const unsigned char *atm_addr, |
1da177e4 | 95 | unsigned long tran_id); |
61c33e01 | 96 | static void lec_vcc_added(struct lec_priv *priv, const struct atmlec_ioc *ioc_data, |
1da177e4 | 97 | struct atm_vcc *vcc, |
d44f7746 CW |
98 | void (*old_push) (struct atm_vcc *vcc, |
99 | struct sk_buff *skb)); | |
1da177e4 LT |
100 | static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc); |
101 | ||
33a9c2d4 CW |
102 | /* must be done under lec_arp_lock */ |
103 | static inline void lec_arp_hold(struct lec_arp_table *entry) | |
104 | { | |
105 | atomic_inc(&entry->usage); | |
106 | } | |
107 | ||
108 | static inline void lec_arp_put(struct lec_arp_table *entry) | |
109 | { | |
110 | if (atomic_dec_and_test(&entry->usage)) | |
111 | kfree(entry); | |
112 | } | |
113 | ||
114 | ||
1da177e4 | 115 | static struct lane2_ops lane2_ops = { |
d44f7746 CW |
116 | lane2_resolve, /* resolve, spec 3.1.3 */ |
117 | lane2_associate_req, /* associate_req, spec 3.1.4 */ | |
118 | NULL /* associate indicator, spec 3.1.5 */ | |
1da177e4 LT |
119 | }; |
120 | ||
d44f7746 | 121 | static unsigned char bus_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
1da177e4 LT |
122 | |
123 | /* Device structures */ | |
124 | static struct net_device *dev_lec[MAX_LEC_ITF]; | |
125 | ||
126 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) | |
127 | static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev) | |
128 | { | |
d44f7746 CW |
129 | struct ethhdr *eth; |
130 | char *buff; | |
131 | struct lec_priv *priv; | |
132 | ||
133 | /* | |
134 | * Check if this is a BPDU. If so, ask zeppelin to send | |
135 | * LE_TOPOLOGY_REQUEST with the same value of Topology Change bit | |
136 | * as the Config BPDU has | |
137 | */ | |
138 | eth = (struct ethhdr *)skb->data; | |
139 | buff = skb->data + skb->dev->hard_header_len; | |
140 | if (*buff++ == 0x42 && *buff++ == 0x42 && *buff++ == 0x03) { | |
1da177e4 | 141 | struct sock *sk; |
d44f7746 CW |
142 | struct sk_buff *skb2; |
143 | struct atmlec_msg *mesg; | |
144 | ||
145 | skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); | |
146 | if (skb2 == NULL) | |
147 | return; | |
148 | skb2->len = sizeof(struct atmlec_msg); | |
149 | mesg = (struct atmlec_msg *)skb2->data; | |
150 | mesg->type = l_topology_change; | |
151 | buff += 4; | |
152 | mesg->content.normal.flag = *buff & 0x01; /* 0x01 is topology change */ | |
153 | ||
524ad0a7 | 154 | priv = netdev_priv(dev); |
d44f7746 | 155 | atm_force_charge(priv->lecd, skb2->truesize); |
1da177e4 | 156 | sk = sk_atm(priv->lecd); |
d44f7746 CW |
157 | skb_queue_tail(&sk->sk_receive_queue, skb2); |
158 | sk->sk_data_ready(sk, skb2->len); | |
159 | } | |
1da177e4 | 160 | |
d44f7746 | 161 | return; |
1da177e4 LT |
162 | } |
163 | #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */ | |
164 | ||
165 | /* | |
166 | * Modelled after tr_type_trans | |
167 | * All multicast and ARE or STE frames go to BUS. | |
168 | * Non source routed frames go by destination address. | |
169 | * Last hop source routed frames go by destination address. | |
170 | * Not last hop source routed frames go by _next_ route descriptor. | |
171 | * Returns pointer to destination MAC address or fills in rdesc | |
172 | * and returns NULL. | |
173 | */ | |
174 | #ifdef CONFIG_TR | |
175 | static unsigned char *get_tr_dst(unsigned char *packet, unsigned char *rdesc) | |
176 | { | |
d44f7746 | 177 | struct trh_hdr *trh; |
5c17d5f1 | 178 | unsigned int riflen, num_rdsc; |
d44f7746 CW |
179 | |
180 | trh = (struct trh_hdr *)packet; | |
181 | if (trh->daddr[0] & (uint8_t) 0x80) | |
182 | return bus_mac; /* multicast */ | |
183 | ||
184 | if (trh->saddr[0] & TR_RII) { | |
185 | riflen = (ntohs(trh->rcf) & TR_RCF_LEN_MASK) >> 8; | |
186 | if ((ntohs(trh->rcf) >> 13) != 0) | |
187 | return bus_mac; /* ARE or STE */ | |
188 | } else | |
189 | return trh->daddr; /* not source routed */ | |
190 | ||
191 | if (riflen < 6) | |
192 | return trh->daddr; /* last hop, source routed */ | |
193 | ||
194 | /* riflen is 6 or more, packet has more than one route descriptor */ | |
195 | num_rdsc = (riflen / 2) - 1; | |
196 | memset(rdesc, 0, ETH_ALEN); | |
197 | /* offset 4 comes from LAN destination field in LE control frames */ | |
198 | if (trh->rcf & htons((uint16_t) TR_RCF_DIR_BIT)) | |
30d492da | 199 | memcpy(&rdesc[4], &trh->rseg[num_rdsc - 2], sizeof(__be16)); |
d44f7746 | 200 | else { |
30d492da | 201 | memcpy(&rdesc[4], &trh->rseg[1], sizeof(__be16)); |
d44f7746 CW |
202 | rdesc[5] = ((ntohs(trh->rseg[0]) & 0x000f) | (rdesc[5] & 0xf0)); |
203 | } | |
204 | ||
205 | return NULL; | |
1da177e4 LT |
206 | } |
207 | #endif /* CONFIG_TR */ | |
208 | ||
209 | /* | |
210 | * Open/initialize the netdevice. This is called (in the current kernel) | |
211 | * sometime after booting when the 'ifconfig' program is run. | |
212 | * | |
213 | * This routine should set everything up anew at each open, even | |
214 | * registers that "should" only need to be set once at boot, so that | |
215 | * there is non-reboot way to recover if something goes wrong. | |
216 | */ | |
217 | ||
d44f7746 | 218 | static int lec_open(struct net_device *dev) |
1da177e4 | 219 | { |
1da177e4 | 220 | netif_start_queue(dev); |
162619e5 | 221 | memset(&dev->stats, 0, sizeof(struct net_device_stats)); |
d44f7746 CW |
222 | |
223 | return 0; | |
1da177e4 LT |
224 | } |
225 | ||
162619e5 SH |
226 | static void |
227 | lec_send(struct atm_vcc *vcc, struct sk_buff *skb) | |
1da177e4 | 228 | { |
162619e5 SH |
229 | struct net_device *dev = skb->dev; |
230 | ||
1da177e4 LT |
231 | ATM_SKB(skb)->vcc = vcc; |
232 | ATM_SKB(skb)->atm_options = vcc->atm_options; | |
233 | ||
234 | atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); | |
235 | if (vcc->send(vcc, skb) < 0) { | |
162619e5 | 236 | dev->stats.tx_dropped++; |
1da177e4 LT |
237 | return; |
238 | } | |
239 | ||
162619e5 SH |
240 | dev->stats.tx_packets++; |
241 | dev->stats.tx_bytes += skb->len; | |
1da177e4 LT |
242 | } |
243 | ||
d44f7746 | 244 | static void lec_tx_timeout(struct net_device *dev) |
1da177e4 LT |
245 | { |
246 | printk(KERN_INFO "%s: tx timeout\n", dev->name); | |
247 | dev->trans_start = jiffies; | |
248 | netif_wake_queue(dev); | |
249 | } | |
250 | ||
d44f7746 | 251 | static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 | 252 | { |
d44f7746 | 253 | struct sk_buff *skb2; |
524ad0a7 | 254 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
255 | struct lecdatahdr_8023 *lec_h; |
256 | struct atm_vcc *vcc; | |
1da177e4 | 257 | struct lec_arp_table *entry; |
d44f7746 | 258 | unsigned char *dst; |
1da177e4 LT |
259 | int min_frame_size; |
260 | #ifdef CONFIG_TR | |
d44f7746 | 261 | unsigned char rdesc[ETH_ALEN]; /* Token Ring route descriptor */ |
1da177e4 | 262 | #endif |
d44f7746 | 263 | int is_rdesc; |
1da177e4 | 264 | #if DUMP_PACKETS > 0 |
d44f7746 CW |
265 | char buf[300]; |
266 | int i = 0; | |
1da177e4 | 267 | #endif /* DUMP_PACKETS >0 */ |
d44f7746 | 268 | |
52240062 | 269 | pr_debug("lec_start_xmit called\n"); |
d44f7746 CW |
270 | if (!priv->lecd) { |
271 | printk("%s:No lecd attached\n", dev->name); | |
162619e5 | 272 | dev->stats.tx_errors++; |
d44f7746 CW |
273 | netif_stop_queue(dev); |
274 | return -EUNATCH; | |
275 | } | |
276 | ||
52240062 | 277 | pr_debug("skbuff head:%lx data:%lx tail:%lx end:%lx\n", |
27a884dc | 278 | (long)skb->head, (long)skb->data, (long)skb_tail_pointer(skb), |
4305b541 | 279 | (long)skb_end_pointer(skb)); |
1da177e4 | 280 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) |
d44f7746 CW |
281 | if (memcmp(skb->data, bridge_ula_lec, sizeof(bridge_ula_lec)) == 0) |
282 | lec_handle_bridge(skb, dev); | |
1da177e4 LT |
283 | #endif |
284 | ||
d44f7746 CW |
285 | /* Make sure we have room for lec_id */ |
286 | if (skb_headroom(skb) < 2) { | |
1da177e4 | 287 | |
52240062 | 288 | pr_debug("lec_start_xmit: reallocating skb\n"); |
d44f7746 CW |
289 | skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN); |
290 | kfree_skb(skb); | |
291 | if (skb2 == NULL) | |
292 | return 0; | |
293 | skb = skb2; | |
294 | } | |
295 | skb_push(skb, 2); | |
1da177e4 | 296 | |
d44f7746 CW |
297 | /* Put le header to place, works for TokenRing too */ |
298 | lec_h = (struct lecdatahdr_8023 *)skb->data; | |
299 | lec_h->le_header = htons(priv->lecid); | |
1da177e4 LT |
300 | |
301 | #ifdef CONFIG_TR | |
d44f7746 CW |
302 | /* |
303 | * Ugly. Use this to realign Token Ring packets for | |
304 | * e.g. PCA-200E driver. | |
305 | */ | |
306 | if (priv->is_trdev) { | |
307 | skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN); | |
308 | kfree_skb(skb); | |
309 | if (skb2 == NULL) | |
310 | return 0; | |
311 | skb = skb2; | |
312 | } | |
1da177e4 LT |
313 | #endif |
314 | ||
315 | #if DUMP_PACKETS > 0 | |
d44f7746 CW |
316 | printk("%s: send datalen:%ld lecid:%4.4x\n", dev->name, |
317 | skb->len, priv->lecid); | |
1da177e4 | 318 | #if DUMP_PACKETS >= 2 |
d44f7746 CW |
319 | for (i = 0; i < skb->len && i < 99; i++) { |
320 | sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]); | |
321 | } | |
1da177e4 | 322 | #elif DUMP_PACKETS >= 1 |
d44f7746 CW |
323 | for (i = 0; i < skb->len && i < 30; i++) { |
324 | sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]); | |
325 | } | |
1da177e4 | 326 | #endif /* DUMP_PACKETS >= 1 */ |
d44f7746 CW |
327 | if (i == skb->len) |
328 | printk("%s\n", buf); | |
329 | else | |
330 | printk("%s...\n", buf); | |
1da177e4 LT |
331 | #endif /* DUMP_PACKETS > 0 */ |
332 | ||
d44f7746 | 333 | /* Minimum ethernet-frame size */ |
1da177e4 | 334 | #ifdef CONFIG_TR |
d44f7746 CW |
335 | if (priv->is_trdev) |
336 | min_frame_size = LEC_MINIMUM_8025_SIZE; | |
1da177e4 LT |
337 | else |
338 | #endif | |
d44f7746 CW |
339 | min_frame_size = LEC_MINIMUM_8023_SIZE; |
340 | if (skb->len < min_frame_size) { | |
341 | if ((skb->len + skb_tailroom(skb)) < min_frame_size) { | |
342 | skb2 = skb_copy_expand(skb, 0, | |
343 | min_frame_size - skb->truesize, | |
344 | GFP_ATOMIC); | |
345 | dev_kfree_skb(skb); | |
346 | if (skb2 == NULL) { | |
162619e5 | 347 | dev->stats.tx_dropped++; |
d44f7746 CW |
348 | return 0; |
349 | } | |
350 | skb = skb2; | |
351 | } | |
1da177e4 | 352 | skb_put(skb, min_frame_size - skb->len); |
d44f7746 CW |
353 | } |
354 | ||
355 | /* Send to right vcc */ | |
356 | is_rdesc = 0; | |
357 | dst = lec_h->h_dest; | |
1da177e4 | 358 | #ifdef CONFIG_TR |
d44f7746 CW |
359 | if (priv->is_trdev) { |
360 | dst = get_tr_dst(skb->data + 2, rdesc); | |
361 | if (dst == NULL) { | |
362 | dst = rdesc; | |
363 | is_rdesc = 1; | |
364 | } | |
365 | } | |
1da177e4 | 366 | #endif |
d44f7746 CW |
367 | entry = NULL; |
368 | vcc = lec_arp_resolve(priv, dst, is_rdesc, &entry); | |
58c14a8f | 369 | pr_debug("%s:vcc:%p vcc_flags:%lx, entry:%p\n", dev->name, |
d44f7746 CW |
370 | vcc, vcc ? vcc->flags : 0, entry); |
371 | if (!vcc || !test_bit(ATM_VF_READY, &vcc->flags)) { | |
372 | if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) { | |
52240062 | 373 | pr_debug("%s:lec_start_xmit: queuing packet, ", |
d44f7746 | 374 | dev->name); |
e174961c | 375 | pr_debug("MAC address %pM\n", lec_h->h_dest); |
d44f7746 CW |
376 | skb_queue_tail(&entry->tx_wait, skb); |
377 | } else { | |
52240062 | 378 | pr_debug |
d44f7746 CW |
379 | ("%s:lec_start_xmit: tx queue full or no arp entry, dropping, ", |
380 | dev->name); | |
e174961c | 381 | pr_debug("MAC address %pM\n", lec_h->h_dest); |
162619e5 | 382 | dev->stats.tx_dropped++; |
d44f7746 CW |
383 | dev_kfree_skb(skb); |
384 | } | |
6656e3c4 | 385 | goto out; |
d44f7746 CW |
386 | } |
387 | #if DUMP_PACKETS > 0 | |
388 | printk("%s:sending to vpi:%d vci:%d\n", dev->name, vcc->vpi, vcc->vci); | |
1da177e4 | 389 | #endif /* DUMP_PACKETS > 0 */ |
d44f7746 CW |
390 | |
391 | while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) { | |
52240062 | 392 | pr_debug("lec.c: emptying tx queue, "); |
e174961c | 393 | pr_debug("MAC address %pM\n", lec_h->h_dest); |
162619e5 | 394 | lec_send(vcc, skb2); |
d44f7746 | 395 | } |
1da177e4 | 396 | |
162619e5 | 397 | lec_send(vcc, skb); |
1da177e4 LT |
398 | |
399 | if (!atm_may_send(vcc, 0)) { | |
400 | struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); | |
401 | ||
402 | vpriv->xoff = 1; | |
403 | netif_stop_queue(dev); | |
404 | ||
405 | /* | |
406 | * vcc->pop() might have occurred in between, making | |
407 | * the vcc usuable again. Since xmit is serialized, | |
408 | * this is the only situation we have to re-test. | |
409 | */ | |
410 | ||
411 | if (atm_may_send(vcc, 0)) | |
412 | netif_wake_queue(dev); | |
413 | } | |
414 | ||
6656e3c4 CW |
415 | out: |
416 | if (entry) | |
417 | lec_arp_put(entry); | |
1da177e4 | 418 | dev->trans_start = jiffies; |
d44f7746 | 419 | return 0; |
1da177e4 LT |
420 | } |
421 | ||
422 | /* The inverse routine to net_open(). */ | |
d44f7746 | 423 | static int lec_close(struct net_device *dev) |
1da177e4 | 424 | { |
d44f7746 CW |
425 | netif_stop_queue(dev); |
426 | return 0; | |
1da177e4 LT |
427 | } |
428 | ||
d44f7746 | 429 | static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 LT |
430 | { |
431 | unsigned long flags; | |
d44f7746 | 432 | struct net_device *dev = (struct net_device *)vcc->proto_data; |
524ad0a7 | 433 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
434 | struct atmlec_msg *mesg; |
435 | struct lec_arp_table *entry; | |
436 | int i; | |
437 | char *tmp; /* FIXME */ | |
1da177e4 LT |
438 | |
439 | atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); | |
d44f7746 CW |
440 | mesg = (struct atmlec_msg *)skb->data; |
441 | tmp = skb->data; | |
442 | tmp += sizeof(struct atmlec_msg); | |
52240062 | 443 | pr_debug("%s: msg from zeppelin:%d\n", dev->name, mesg->type); |
d44f7746 CW |
444 | switch (mesg->type) { |
445 | case l_set_mac_addr: | |
446 | for (i = 0; i < 6; i++) { | |
447 | dev->dev_addr[i] = mesg->content.normal.mac_addr[i]; | |
448 | } | |
449 | break; | |
450 | case l_del_mac_addr: | |
451 | for (i = 0; i < 6; i++) { | |
452 | dev->dev_addr[i] = 0; | |
453 | } | |
454 | break; | |
455 | case l_addr_delete: | |
456 | lec_addr_delete(priv, mesg->content.normal.atm_addr, | |
457 | mesg->content.normal.flag); | |
458 | break; | |
459 | case l_topology_change: | |
460 | priv->topology_change = mesg->content.normal.flag; | |
461 | break; | |
462 | case l_flush_complete: | |
463 | lec_flush_complete(priv, mesg->content.normal.flag); | |
464 | break; | |
465 | case l_narp_req: /* LANE2: see 7.1.35 in the lane2 spec */ | |
1da177e4 | 466 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d44f7746 CW |
467 | entry = lec_arp_find(priv, mesg->content.normal.mac_addr); |
468 | lec_arp_remove(priv, entry); | |
1da177e4 LT |
469 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
470 | ||
d44f7746 CW |
471 | if (mesg->content.normal.no_source_le_narp) |
472 | break; | |
473 | /* FALL THROUGH */ | |
474 | case l_arp_update: | |
475 | lec_arp_update(priv, mesg->content.normal.mac_addr, | |
476 | mesg->content.normal.atm_addr, | |
477 | mesg->content.normal.flag, | |
478 | mesg->content.normal.targetless_le_arp); | |
52240062 | 479 | pr_debug("lec: in l_arp_update\n"); |
d44f7746 | 480 | if (mesg->sizeoftlvs != 0) { /* LANE2 3.1.5 */ |
52240062 | 481 | pr_debug("lec: LANE2 3.1.5, got tlvs, size %d\n", |
d44f7746 CW |
482 | mesg->sizeoftlvs); |
483 | lane2_associate_ind(dev, mesg->content.normal.mac_addr, | |
484 | tmp, mesg->sizeoftlvs); | |
485 | } | |
486 | break; | |
487 | case l_config: | |
488 | priv->maximum_unknown_frame_count = | |
489 | mesg->content.config.maximum_unknown_frame_count; | |
490 | priv->max_unknown_frame_time = | |
491 | (mesg->content.config.max_unknown_frame_time * HZ); | |
492 | priv->max_retry_count = mesg->content.config.max_retry_count; | |
493 | priv->aging_time = (mesg->content.config.aging_time * HZ); | |
494 | priv->forward_delay_time = | |
495 | (mesg->content.config.forward_delay_time * HZ); | |
496 | priv->arp_response_time = | |
497 | (mesg->content.config.arp_response_time * HZ); | |
498 | priv->flush_timeout = (mesg->content.config.flush_timeout * HZ); | |
499 | priv->path_switching_delay = | |
500 | (mesg->content.config.path_switching_delay * HZ); | |
501 | priv->lane_version = mesg->content.config.lane_version; /* LANE2 */ | |
1da177e4 LT |
502 | priv->lane2_ops = NULL; |
503 | if (priv->lane_version > 1) | |
504 | priv->lane2_ops = &lane2_ops; | |
505 | if (dev->change_mtu(dev, mesg->content.config.mtu)) | |
506 | printk("%s: change_mtu to %d failed\n", dev->name, | |
d44f7746 | 507 | mesg->content.config.mtu); |
1da177e4 | 508 | priv->is_proxy = mesg->content.config.is_proxy; |
d44f7746 CW |
509 | break; |
510 | case l_flush_tran_id: | |
511 | lec_set_flush_tran_id(priv, mesg->content.normal.atm_addr, | |
512 | mesg->content.normal.flag); | |
513 | break; | |
514 | case l_set_lecid: | |
515 | priv->lecid = | |
516 | (unsigned short)(0xffff & mesg->content.normal.flag); | |
517 | break; | |
518 | case l_should_bridge: | |
1da177e4 | 519 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) |
d44f7746 CW |
520 | { |
521 | struct net_bridge_fdb_entry *f; | |
522 | ||
e174961c JB |
523 | pr_debug("%s: bridge zeppelin asks about %pM\n", |
524 | dev->name, mesg->content.proxy.mac_addr); | |
d44f7746 CW |
525 | |
526 | if (br_fdb_get_hook == NULL || dev->br_port == NULL) | |
527 | break; | |
528 | ||
529 | f = br_fdb_get_hook(dev->br_port->br, | |
530 | mesg->content.proxy.mac_addr); | |
531 | if (f != NULL && f->dst->dev != dev | |
532 | && f->dst->state == BR_STATE_FORWARDING) { | |
533 | /* hit from bridge table, send LE_ARP_RESPONSE */ | |
534 | struct sk_buff *skb2; | |
535 | struct sock *sk; | |
536 | ||
52240062 | 537 | pr_debug |
d44f7746 CW |
538 | ("%s: entry found, responding to zeppelin\n", |
539 | dev->name); | |
540 | skb2 = | |
541 | alloc_skb(sizeof(struct atmlec_msg), | |
542 | GFP_ATOMIC); | |
543 | if (skb2 == NULL) { | |
544 | br_fdb_put_hook(f); | |
545 | break; | |
546 | } | |
547 | skb2->len = sizeof(struct atmlec_msg); | |
27d7ff46 ACM |
548 | skb_copy_to_linear_data(skb2, mesg, |
549 | sizeof(*mesg)); | |
d44f7746 CW |
550 | atm_force_charge(priv->lecd, skb2->truesize); |
551 | sk = sk_atm(priv->lecd); | |
552 | skb_queue_tail(&sk->sk_receive_queue, skb2); | |
553 | sk->sk_data_ready(sk, skb2->len); | |
554 | } | |
555 | if (f != NULL) | |
556 | br_fdb_put_hook(f); | |
557 | } | |
1da177e4 | 558 | #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */ |
d44f7746 CW |
559 | break; |
560 | default: | |
561 | printk("%s: Unknown message type %d\n", dev->name, mesg->type); | |
562 | dev_kfree_skb(skb); | |
563 | return -EINVAL; | |
564 | } | |
565 | dev_kfree_skb(skb); | |
566 | return 0; | |
1da177e4 LT |
567 | } |
568 | ||
d44f7746 | 569 | static void lec_atm_close(struct atm_vcc *vcc) |
1da177e4 | 570 | { |
d44f7746 CW |
571 | struct sk_buff *skb; |
572 | struct net_device *dev = (struct net_device *)vcc->proto_data; | |
524ad0a7 | 573 | struct lec_priv *priv = netdev_priv(dev); |
1da177e4 | 574 | |
d44f7746 CW |
575 | priv->lecd = NULL; |
576 | /* Do something needful? */ | |
1da177e4 | 577 | |
d44f7746 CW |
578 | netif_stop_queue(dev); |
579 | lec_arp_destroy(priv); | |
1da177e4 | 580 | |
d44f7746 | 581 | if (skb_peek(&sk_atm(vcc)->sk_receive_queue)) |
1da177e4 | 582 | printk("%s lec_atm_close: closing with messages pending\n", |
d44f7746 CW |
583 | dev->name); |
584 | while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue)) != NULL) { | |
585 | atm_return(vcc, skb->truesize); | |
1da177e4 | 586 | dev_kfree_skb(skb); |
d44f7746 CW |
587 | } |
588 | ||
1da177e4 | 589 | printk("%s: Shut down!\n", dev->name); |
d44f7746 | 590 | module_put(THIS_MODULE); |
1da177e4 LT |
591 | } |
592 | ||
593 | static struct atmdev_ops lecdev_ops = { | |
d44f7746 CW |
594 | .close = lec_atm_close, |
595 | .send = lec_atm_send | |
1da177e4 LT |
596 | }; |
597 | ||
598 | static struct atm_dev lecatm_dev = { | |
d44f7746 CW |
599 | .ops = &lecdev_ops, |
600 | .type = "lec", | |
601 | .number = 999, /* dummy device number */ | |
4ef8d0ae | 602 | .lock = __SPIN_LOCK_UNLOCKED(lecatm_dev.lock) |
1da177e4 LT |
603 | }; |
604 | ||
605 | /* | |
606 | * LANE2: new argument struct sk_buff *data contains | |
607 | * the LE_ARP based TLVs introduced in the LANE2 spec | |
608 | */ | |
d44f7746 CW |
609 | static int |
610 | send_to_lecd(struct lec_priv *priv, atmlec_msg_type type, | |
61c33e01 | 611 | const unsigned char *mac_addr, const unsigned char *atm_addr, |
d44f7746 | 612 | struct sk_buff *data) |
1da177e4 LT |
613 | { |
614 | struct sock *sk; | |
615 | struct sk_buff *skb; | |
616 | struct atmlec_msg *mesg; | |
617 | ||
618 | if (!priv || !priv->lecd) { | |
619 | return -1; | |
620 | } | |
621 | skb = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); | |
622 | if (!skb) | |
623 | return -1; | |
624 | skb->len = sizeof(struct atmlec_msg); | |
625 | mesg = (struct atmlec_msg *)skb->data; | |
d44f7746 | 626 | memset(mesg, 0, sizeof(struct atmlec_msg)); |
1da177e4 | 627 | mesg->type = type; |
d44f7746 CW |
628 | if (data != NULL) |
629 | mesg->sizeoftlvs = data->len; | |
1da177e4 LT |
630 | if (mac_addr) |
631 | memcpy(&mesg->content.normal.mac_addr, mac_addr, ETH_ALEN); | |
d44f7746 CW |
632 | else |
633 | mesg->content.normal.targetless_le_arp = 1; | |
1da177e4 LT |
634 | if (atm_addr) |
635 | memcpy(&mesg->content.normal.atm_addr, atm_addr, ATM_ESA_LEN); | |
636 | ||
d44f7746 | 637 | atm_force_charge(priv->lecd, skb->truesize); |
1da177e4 LT |
638 | sk = sk_atm(priv->lecd); |
639 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
d44f7746 | 640 | sk->sk_data_ready(sk, skb->len); |
1da177e4 | 641 | |
d44f7746 | 642 | if (data != NULL) { |
52240062 | 643 | pr_debug("lec: about to send %d bytes of data\n", data->len); |
d44f7746 CW |
644 | atm_force_charge(priv->lecd, data->truesize); |
645 | skb_queue_tail(&sk->sk_receive_queue, data); | |
646 | sk->sk_data_ready(sk, skb->len); | |
647 | } | |
1da177e4 | 648 | |
d44f7746 | 649 | return 0; |
1da177e4 LT |
650 | } |
651 | ||
652 | /* shamelessly stolen from drivers/net/net_init.c */ | |
653 | static int lec_change_mtu(struct net_device *dev, int new_mtu) | |
654 | { | |
d44f7746 CW |
655 | if ((new_mtu < 68) || (new_mtu > 18190)) |
656 | return -EINVAL; | |
657 | dev->mtu = new_mtu; | |
658 | return 0; | |
1da177e4 LT |
659 | } |
660 | ||
661 | static void lec_set_multicast_list(struct net_device *dev) | |
662 | { | |
d44f7746 CW |
663 | /* |
664 | * by default, all multicast frames arrive over the bus. | |
665 | * eventually support selective multicast service | |
666 | */ | |
667 | return; | |
1da177e4 LT |
668 | } |
669 | ||
d44f7746 | 670 | static void lec_init(struct net_device *dev) |
1da177e4 | 671 | { |
d44f7746 CW |
672 | dev->change_mtu = lec_change_mtu; |
673 | dev->open = lec_open; | |
674 | dev->stop = lec_close; | |
675 | dev->hard_start_xmit = lec_start_xmit; | |
1da177e4 LT |
676 | dev->tx_timeout = lec_tx_timeout; |
677 | ||
d44f7746 CW |
678 | dev->get_stats = lec_get_stats; |
679 | dev->set_multicast_list = lec_set_multicast_list; | |
680 | dev->do_ioctl = NULL; | |
681 | printk("%s: Initialized!\n", dev->name); | |
1da177e4 LT |
682 | } |
683 | ||
61c33e01 | 684 | static const unsigned char lec_ctrl_magic[] = { |
d44f7746 CW |
685 | 0xff, |
686 | 0x00, | |
687 | 0x01, | |
688 | 0x01 | |
689 | }; | |
1da177e4 | 690 | |
4a7097fc ST |
691 | #define LEC_DATA_DIRECT_8023 2 |
692 | #define LEC_DATA_DIRECT_8025 3 | |
693 | ||
694 | static int lec_is_data_direct(struct atm_vcc *vcc) | |
d44f7746 | 695 | { |
4a7097fc ST |
696 | return ((vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8023) || |
697 | (vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8025)); | |
d44f7746 | 698 | } |
4a7097fc | 699 | |
d44f7746 | 700 | static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 | 701 | { |
4a7097fc | 702 | unsigned long flags; |
d44f7746 | 703 | struct net_device *dev = (struct net_device *)vcc->proto_data; |
524ad0a7 | 704 | struct lec_priv *priv = netdev_priv(dev); |
1da177e4 LT |
705 | |
706 | #if DUMP_PACKETS >0 | |
d44f7746 CW |
707 | int i = 0; |
708 | char buf[300]; | |
1da177e4 | 709 | |
d44f7746 CW |
710 | printk("%s: lec_push vcc vpi:%d vci:%d\n", dev->name, |
711 | vcc->vpi, vcc->vci); | |
1da177e4 | 712 | #endif |
d44f7746 | 713 | if (!skb) { |
52240062 | 714 | pr_debug("%s: null skb\n", dev->name); |
d44f7746 CW |
715 | lec_vcc_close(priv, vcc); |
716 | return; | |
717 | } | |
1da177e4 | 718 | #if DUMP_PACKETS > 0 |
d44f7746 CW |
719 | printk("%s: rcv datalen:%ld lecid:%4.4x\n", dev->name, |
720 | skb->len, priv->lecid); | |
1da177e4 | 721 | #if DUMP_PACKETS >= 2 |
d44f7746 CW |
722 | for (i = 0; i < skb->len && i < 99; i++) { |
723 | sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]); | |
724 | } | |
1da177e4 | 725 | #elif DUMP_PACKETS >= 1 |
d44f7746 CW |
726 | for (i = 0; i < skb->len && i < 30; i++) { |
727 | sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]); | |
728 | } | |
1da177e4 | 729 | #endif /* DUMP_PACKETS >= 1 */ |
d44f7746 CW |
730 | if (i == skb->len) |
731 | printk("%s\n", buf); | |
732 | else | |
733 | printk("%s...\n", buf); | |
1da177e4 | 734 | #endif /* DUMP_PACKETS > 0 */ |
d44f7746 | 735 | if (memcmp(skb->data, lec_ctrl_magic, 4) == 0) { /* Control frame, to daemon */ |
1da177e4 LT |
736 | struct sock *sk = sk_atm(vcc); |
737 | ||
52240062 | 738 | pr_debug("%s: To daemon\n", dev->name); |
d44f7746 CW |
739 | skb_queue_tail(&sk->sk_receive_queue, skb); |
740 | sk->sk_data_ready(sk, skb->len); | |
741 | } else { /* Data frame, queue to protocol handlers */ | |
4a7097fc | 742 | struct lec_arp_table *entry; |
d44f7746 CW |
743 | unsigned char *src, *dst; |
744 | ||
745 | atm_return(vcc, skb->truesize); | |
30d492da | 746 | if (*(__be16 *) skb->data == htons(priv->lecid) || |
d44f7746 CW |
747 | !priv->lecd || !(dev->flags & IFF_UP)) { |
748 | /* | |
749 | * Probably looping back, or if lecd is missing, | |
750 | * lecd has gone down | |
751 | */ | |
52240062 | 752 | pr_debug("Ignoring frame...\n"); |
d44f7746 CW |
753 | dev_kfree_skb(skb); |
754 | return; | |
755 | } | |
1da177e4 | 756 | #ifdef CONFIG_TR |
d44f7746 CW |
757 | if (priv->is_trdev) |
758 | dst = ((struct lecdatahdr_8025 *)skb->data)->h_dest; | |
759 | else | |
1da177e4 | 760 | #endif |
d44f7746 | 761 | dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest; |
4a7097fc | 762 | |
d44f7746 CW |
763 | /* |
764 | * If this is a Data Direct VCC, and the VCC does not match | |
4a7097fc ST |
765 | * the LE_ARP cache entry, delete the LE_ARP cache entry. |
766 | */ | |
767 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
768 | if (lec_is_data_direct(vcc)) { | |
769 | #ifdef CONFIG_TR | |
770 | if (priv->is_trdev) | |
d44f7746 CW |
771 | src = |
772 | ((struct lecdatahdr_8025 *)skb->data)-> | |
773 | h_source; | |
4a7097fc ST |
774 | else |
775 | #endif | |
d44f7746 CW |
776 | src = |
777 | ((struct lecdatahdr_8023 *)skb->data)-> | |
778 | h_source; | |
4a7097fc ST |
779 | entry = lec_arp_find(priv, src); |
780 | if (entry && entry->vcc != vcc) { | |
781 | lec_arp_remove(priv, entry); | |
33a9c2d4 | 782 | lec_arp_put(entry); |
4a7097fc ST |
783 | } |
784 | } | |
785 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1da177e4 | 786 | |
d44f7746 CW |
787 | if (!(dst[0] & 0x01) && /* Never filter Multi/Broadcast */ |
788 | !priv->is_proxy && /* Proxy wants all the packets */ | |
1da177e4 | 789 | memcmp(dst, dev->dev_addr, dev->addr_len)) { |
d44f7746 CW |
790 | dev_kfree_skb(skb); |
791 | return; | |
792 | } | |
d0732f64 | 793 | if (!hlist_empty(&priv->lec_arp_empty_ones)) { |
d44f7746 CW |
794 | lec_arp_check_empties(priv, vcc, skb); |
795 | } | |
d44f7746 | 796 | skb_pull(skb, 2); /* skip lec_id */ |
1da177e4 | 797 | #ifdef CONFIG_TR |
d44f7746 CW |
798 | if (priv->is_trdev) |
799 | skb->protocol = tr_type_trans(skb, dev); | |
800 | else | |
1da177e4 | 801 | #endif |
d44f7746 | 802 | skb->protocol = eth_type_trans(skb, dev); |
162619e5 SH |
803 | dev->stats.rx_packets++; |
804 | dev->stats.rx_bytes += skb->len; | |
d44f7746 CW |
805 | memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data)); |
806 | netif_rx(skb); | |
807 | } | |
1da177e4 LT |
808 | } |
809 | ||
d44f7746 | 810 | static void lec_pop(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 LT |
811 | { |
812 | struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); | |
813 | struct net_device *dev = skb->dev; | |
814 | ||
815 | if (vpriv == NULL) { | |
816 | printk("lec_pop(): vpriv = NULL!?!?!?\n"); | |
817 | return; | |
818 | } | |
819 | ||
820 | vpriv->old_pop(vcc, skb); | |
821 | ||
822 | if (vpriv->xoff && atm_may_send(vcc, 0)) { | |
823 | vpriv->xoff = 0; | |
824 | if (netif_running(dev) && netif_queue_stopped(dev)) | |
825 | netif_wake_queue(dev); | |
826 | } | |
827 | } | |
828 | ||
d44f7746 | 829 | static int lec_vcc_attach(struct atm_vcc *vcc, void __user *arg) |
1da177e4 LT |
830 | { |
831 | struct lec_vcc_priv *vpriv; | |
d44f7746 CW |
832 | int bytes_left; |
833 | struct atmlec_ioc ioc_data; | |
834 | ||
835 | /* Lecd must be up in this case */ | |
836 | bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmlec_ioc)); | |
837 | if (bytes_left != 0) { | |
838 | printk | |
839 | ("lec: lec_vcc_attach, copy from user failed for %d bytes\n", | |
840 | bytes_left); | |
841 | } | |
842 | if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF || | |
843 | !dev_lec[ioc_data.dev_num]) | |
844 | return -EINVAL; | |
1da177e4 LT |
845 | if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL))) |
846 | return -ENOMEM; | |
847 | vpriv->xoff = 0; | |
848 | vpriv->old_pop = vcc->pop; | |
849 | vcc->user_back = vpriv; | |
850 | vcc->pop = lec_pop; | |
524ad0a7 | 851 | lec_vcc_added(netdev_priv(dev_lec[ioc_data.dev_num]), |
d44f7746 CW |
852 | &ioc_data, vcc, vcc->push); |
853 | vcc->proto_data = dev_lec[ioc_data.dev_num]; | |
854 | vcc->push = lec_push; | |
855 | return 0; | |
1da177e4 LT |
856 | } |
857 | ||
d44f7746 | 858 | static int lec_mcast_attach(struct atm_vcc *vcc, int arg) |
1da177e4 | 859 | { |
d44f7746 CW |
860 | if (arg < 0 || arg >= MAX_LEC_ITF || !dev_lec[arg]) |
861 | return -EINVAL; | |
862 | vcc->proto_data = dev_lec[arg]; | |
524ad0a7 WC |
863 | return lec_mcast_make((struct lec_priv *)netdev_priv(dev_lec[arg]), |
864 | vcc); | |
1da177e4 LT |
865 | } |
866 | ||
867 | /* Initialize device. */ | |
d44f7746 CW |
868 | static int lecd_attach(struct atm_vcc *vcc, int arg) |
869 | { | |
870 | int i; | |
871 | struct lec_priv *priv; | |
872 | ||
873 | if (arg < 0) | |
874 | i = 0; | |
875 | else | |
876 | i = arg; | |
1da177e4 | 877 | #ifdef CONFIG_TR |
d44f7746 CW |
878 | if (arg >= MAX_LEC_ITF) |
879 | return -EINVAL; | |
880 | #else /* Reserve the top NUM_TR_DEVS for TR */ | |
881 | if (arg >= (MAX_LEC_ITF - NUM_TR_DEVS)) | |
882 | return -EINVAL; | |
1da177e4 | 883 | #endif |
d44f7746 CW |
884 | if (!dev_lec[i]) { |
885 | int is_trdev, size; | |
1da177e4 | 886 | |
d44f7746 CW |
887 | is_trdev = 0; |
888 | if (i >= (MAX_LEC_ITF - NUM_TR_DEVS)) | |
889 | is_trdev = 1; | |
1da177e4 | 890 | |
d44f7746 | 891 | size = sizeof(struct lec_priv); |
1da177e4 | 892 | #ifdef CONFIG_TR |
d44f7746 CW |
893 | if (is_trdev) |
894 | dev_lec[i] = alloc_trdev(size); | |
895 | else | |
1da177e4 | 896 | #endif |
d44f7746 CW |
897 | dev_lec[i] = alloc_etherdev(size); |
898 | if (!dev_lec[i]) | |
899 | return -ENOMEM; | |
900 | snprintf(dev_lec[i]->name, IFNAMSIZ, "lec%d", i); | |
901 | if (register_netdev(dev_lec[i])) { | |
902 | free_netdev(dev_lec[i]); | |
903 | return -EINVAL; | |
904 | } | |
905 | ||
524ad0a7 | 906 | priv = netdev_priv(dev_lec[i]); |
d44f7746 CW |
907 | priv->is_trdev = is_trdev; |
908 | lec_init(dev_lec[i]); | |
909 | } else { | |
524ad0a7 | 910 | priv = netdev_priv(dev_lec[i]); |
d44f7746 CW |
911 | if (priv->lecd) |
912 | return -EADDRINUSE; | |
913 | } | |
914 | lec_arp_init(priv); | |
915 | priv->itfnum = i; /* LANE2 addition */ | |
916 | priv->lecd = vcc; | |
917 | vcc->dev = &lecatm_dev; | |
918 | vcc_insert_socket(sk_atm(vcc)); | |
919 | ||
920 | vcc->proto_data = dev_lec[i]; | |
921 | set_bit(ATM_VF_META, &vcc->flags); | |
922 | set_bit(ATM_VF_READY, &vcc->flags); | |
923 | ||
924 | /* Set default values to these variables */ | |
925 | priv->maximum_unknown_frame_count = 1; | |
926 | priv->max_unknown_frame_time = (1 * HZ); | |
927 | priv->vcc_timeout_period = (1200 * HZ); | |
928 | priv->max_retry_count = 1; | |
929 | priv->aging_time = (300 * HZ); | |
930 | priv->forward_delay_time = (15 * HZ); | |
931 | priv->topology_change = 0; | |
932 | priv->arp_response_time = (1 * HZ); | |
933 | priv->flush_timeout = (4 * HZ); | |
934 | priv->path_switching_delay = (6 * HZ); | |
935 | ||
936 | if (dev_lec[i]->flags & IFF_UP) { | |
937 | netif_start_queue(dev_lec[i]); | |
938 | } | |
939 | __module_get(THIS_MODULE); | |
940 | return i; | |
1da177e4 LT |
941 | } |
942 | ||
943 | #ifdef CONFIG_PROC_FS | |
d44f7746 | 944 | static char *lec_arp_get_status_string(unsigned char status) |
1da177e4 LT |
945 | { |
946 | static char *lec_arp_status_string[] = { | |
947 | "ESI_UNKNOWN ", | |
948 | "ESI_ARP_PENDING ", | |
949 | "ESI_VC_PENDING ", | |
950 | "<Undefined> ", | |
951 | "ESI_FLUSH_PENDING ", | |
952 | "ESI_FORWARD_DIRECT" | |
953 | }; | |
954 | ||
955 | if (status > ESI_FORWARD_DIRECT) | |
956 | status = 3; /* ESI_UNDEFINED */ | |
957 | return lec_arp_status_string[status]; | |
958 | } | |
959 | ||
960 | static void lec_info(struct seq_file *seq, struct lec_arp_table *entry) | |
961 | { | |
962 | int i; | |
963 | ||
964 | for (i = 0; i < ETH_ALEN; i++) | |
965 | seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff); | |
966 | seq_printf(seq, " "); | |
967 | for (i = 0; i < ATM_ESA_LEN; i++) | |
968 | seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff); | |
969 | seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status), | |
970 | entry->flags & 0xffff); | |
971 | if (entry->vcc) | |
972 | seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci); | |
973 | else | |
d44f7746 | 974 | seq_printf(seq, " "); |
1da177e4 LT |
975 | if (entry->recv_vcc) { |
976 | seq_printf(seq, " %3d %3d", entry->recv_vcc->vpi, | |
977 | entry->recv_vcc->vci); | |
d44f7746 CW |
978 | } |
979 | seq_putc(seq, '\n'); | |
1da177e4 LT |
980 | } |
981 | ||
1da177e4 LT |
982 | struct lec_state { |
983 | unsigned long flags; | |
984 | struct lec_priv *locked; | |
d0732f64 | 985 | struct hlist_node *node; |
1da177e4 LT |
986 | struct net_device *dev; |
987 | int itf; | |
988 | int arp_table; | |
989 | int misc_table; | |
990 | }; | |
991 | ||
d0732f64 | 992 | static void *lec_tbl_walk(struct lec_state *state, struct hlist_head *tbl, |
1da177e4 LT |
993 | loff_t *l) |
994 | { | |
d0732f64 CW |
995 | struct hlist_node *e = state->node; |
996 | struct lec_arp_table *tmp; | |
1da177e4 LT |
997 | |
998 | if (!e) | |
d0732f64 | 999 | e = tbl->first; |
2e1e9848 | 1000 | if (e == SEQ_START_TOKEN) { |
d0732f64 | 1001 | e = tbl->first; |
1da177e4 LT |
1002 | --*l; |
1003 | } | |
d0732f64 CW |
1004 | |
1005 | hlist_for_each_entry_from(tmp, e, next) { | |
1da177e4 LT |
1006 | if (--*l < 0) |
1007 | break; | |
1008 | } | |
d0732f64 CW |
1009 | state->node = e; |
1010 | ||
1da177e4 LT |
1011 | return (*l < 0) ? state : NULL; |
1012 | } | |
1013 | ||
1014 | static void *lec_arp_walk(struct lec_state *state, loff_t *l, | |
d44f7746 | 1015 | struct lec_priv *priv) |
1da177e4 LT |
1016 | { |
1017 | void *v = NULL; | |
1018 | int p; | |
1019 | ||
1020 | for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) { | |
d0732f64 | 1021 | v = lec_tbl_walk(state, &priv->lec_arp_tables[p], l); |
1da177e4 LT |
1022 | if (v) |
1023 | break; | |
1024 | } | |
1025 | state->arp_table = p; | |
1026 | return v; | |
1027 | } | |
1028 | ||
1029 | static void *lec_misc_walk(struct lec_state *state, loff_t *l, | |
1030 | struct lec_priv *priv) | |
1031 | { | |
d0732f64 CW |
1032 | struct hlist_head *lec_misc_tables[] = { |
1033 | &priv->lec_arp_empty_ones, | |
1034 | &priv->lec_no_forward, | |
1035 | &priv->mcast_fwds | |
1da177e4 LT |
1036 | }; |
1037 | void *v = NULL; | |
1038 | int q; | |
1039 | ||
1040 | for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) { | |
1041 | v = lec_tbl_walk(state, lec_misc_tables[q], l); | |
1042 | if (v) | |
1043 | break; | |
1044 | } | |
1045 | state->misc_table = q; | |
1046 | return v; | |
1047 | } | |
1048 | ||
1049 | static void *lec_priv_walk(struct lec_state *state, loff_t *l, | |
1050 | struct lec_priv *priv) | |
1051 | { | |
1052 | if (!state->locked) { | |
1053 | state->locked = priv; | |
1054 | spin_lock_irqsave(&priv->lec_arp_lock, state->flags); | |
1055 | } | |
d44f7746 | 1056 | if (!lec_arp_walk(state, l, priv) && !lec_misc_walk(state, l, priv)) { |
1da177e4 LT |
1057 | spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags); |
1058 | state->locked = NULL; | |
1059 | /* Partial state reset for the next time we get called */ | |
1060 | state->arp_table = state->misc_table = 0; | |
1061 | } | |
1062 | return state->locked; | |
1063 | } | |
1064 | ||
1065 | static void *lec_itf_walk(struct lec_state *state, loff_t *l) | |
1066 | { | |
1067 | struct net_device *dev; | |
1068 | void *v; | |
1069 | ||
1070 | dev = state->dev ? state->dev : dev_lec[state->itf]; | |
524ad0a7 WC |
1071 | v = (dev && netdev_priv(dev)) ? |
1072 | lec_priv_walk(state, l, netdev_priv(dev)) : NULL; | |
1da177e4 LT |
1073 | if (!v && dev) { |
1074 | dev_put(dev); | |
1075 | /* Partial state reset for the next time we get called */ | |
1076 | dev = NULL; | |
1077 | } | |
1078 | state->dev = dev; | |
1079 | return v; | |
1080 | } | |
1081 | ||
1082 | static void *lec_get_idx(struct lec_state *state, loff_t l) | |
1083 | { | |
1084 | void *v = NULL; | |
1085 | ||
1086 | for (; state->itf < MAX_LEC_ITF; state->itf++) { | |
1087 | v = lec_itf_walk(state, &l); | |
1088 | if (v) | |
1089 | break; | |
1090 | } | |
d44f7746 | 1091 | return v; |
1da177e4 LT |
1092 | } |
1093 | ||
1094 | static void *lec_seq_start(struct seq_file *seq, loff_t *pos) | |
1095 | { | |
1096 | struct lec_state *state = seq->private; | |
1097 | ||
1098 | state->itf = 0; | |
1099 | state->dev = NULL; | |
1100 | state->locked = NULL; | |
1101 | state->arp_table = 0; | |
1102 | state->misc_table = 0; | |
2e1e9848 | 1103 | state->node = SEQ_START_TOKEN; |
1da177e4 | 1104 | |
2e1e9848 | 1105 | return *pos ? lec_get_idx(state, *pos) : SEQ_START_TOKEN; |
1da177e4 LT |
1106 | } |
1107 | ||
1108 | static void lec_seq_stop(struct seq_file *seq, void *v) | |
1109 | { | |
1110 | struct lec_state *state = seq->private; | |
1111 | ||
1112 | if (state->dev) { | |
1113 | spin_unlock_irqrestore(&state->locked->lec_arp_lock, | |
1114 | state->flags); | |
1115 | dev_put(state->dev); | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
1120 | { | |
1121 | struct lec_state *state = seq->private; | |
1122 | ||
1123 | v = lec_get_idx(state, 1); | |
1124 | *pos += !!PTR_ERR(v); | |
1125 | return v; | |
1126 | } | |
1127 | ||
1128 | static int lec_seq_show(struct seq_file *seq, void *v) | |
1129 | { | |
d44f7746 CW |
1130 | static char lec_banner[] = "Itf MAC ATM destination" |
1131 | " Status Flags " | |
1132 | "VPI/VCI Recv VPI/VCI\n"; | |
1da177e4 | 1133 | |
2e1e9848 | 1134 | if (v == SEQ_START_TOKEN) |
1da177e4 LT |
1135 | seq_puts(seq, lec_banner); |
1136 | else { | |
1137 | struct lec_state *state = seq->private; | |
d44f7746 | 1138 | struct net_device *dev = state->dev; |
d0732f64 | 1139 | struct lec_arp_table *entry = hlist_entry(state->node, struct lec_arp_table, next); |
1da177e4 LT |
1140 | |
1141 | seq_printf(seq, "%s ", dev->name); | |
d0732f64 | 1142 | lec_info(seq, entry); |
1da177e4 LT |
1143 | } |
1144 | return 0; | |
1145 | } | |
1146 | ||
56b3d975 | 1147 | static const struct seq_operations lec_seq_ops = { |
d44f7746 CW |
1148 | .start = lec_seq_start, |
1149 | .next = lec_seq_next, | |
1150 | .stop = lec_seq_stop, | |
1151 | .show = lec_seq_show, | |
1da177e4 LT |
1152 | }; |
1153 | ||
1154 | static int lec_seq_open(struct inode *inode, struct file *file) | |
1155 | { | |
9a8c09e7 | 1156 | return seq_open_private(file, &lec_seq_ops, sizeof(struct lec_state)); |
1da177e4 LT |
1157 | } |
1158 | ||
9a32144e | 1159 | static const struct file_operations lec_seq_fops = { |
d44f7746 CW |
1160 | .owner = THIS_MODULE, |
1161 | .open = lec_seq_open, | |
1162 | .read = seq_read, | |
1163 | .llseek = seq_lseek, | |
9a8c09e7 | 1164 | .release = seq_release_private, |
1da177e4 LT |
1165 | }; |
1166 | #endif | |
1167 | ||
1168 | static int lane_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1169 | { | |
1170 | struct atm_vcc *vcc = ATM_SD(sock); | |
1171 | int err = 0; | |
d44f7746 | 1172 | |
1da177e4 | 1173 | switch (cmd) { |
d44f7746 CW |
1174 | case ATMLEC_CTRL: |
1175 | case ATMLEC_MCAST: | |
1176 | case ATMLEC_DATA: | |
1177 | if (!capable(CAP_NET_ADMIN)) | |
1178 | return -EPERM; | |
1179 | break; | |
1180 | default: | |
1181 | return -ENOIOCTLCMD; | |
1da177e4 LT |
1182 | } |
1183 | ||
1184 | switch (cmd) { | |
d44f7746 CW |
1185 | case ATMLEC_CTRL: |
1186 | err = lecd_attach(vcc, (int)arg); | |
1187 | if (err >= 0) | |
1188 | sock->state = SS_CONNECTED; | |
1189 | break; | |
1190 | case ATMLEC_MCAST: | |
1191 | err = lec_mcast_attach(vcc, (int)arg); | |
1192 | break; | |
1193 | case ATMLEC_DATA: | |
1194 | err = lec_vcc_attach(vcc, (void __user *)arg); | |
1195 | break; | |
1da177e4 LT |
1196 | } |
1197 | ||
1198 | return err; | |
1199 | } | |
1200 | ||
1201 | static struct atm_ioctl lane_ioctl_ops = { | |
d44f7746 CW |
1202 | .owner = THIS_MODULE, |
1203 | .ioctl = lane_ioctl, | |
1da177e4 LT |
1204 | }; |
1205 | ||
1206 | static int __init lane_module_init(void) | |
1207 | { | |
1208 | #ifdef CONFIG_PROC_FS | |
1209 | struct proc_dir_entry *p; | |
1210 | ||
16e297b3 | 1211 | p = proc_create("lec", S_IRUGO, atm_proc_root, &lec_seq_fops); |
dbee0d3f WC |
1212 | if (!p) { |
1213 | printk(KERN_ERR "Unable to initialize /proc/net/atm/lec\n"); | |
1214 | return -ENOMEM; | |
1215 | } | |
1da177e4 LT |
1216 | #endif |
1217 | ||
1218 | register_atm_ioctl(&lane_ioctl_ops); | |
d44f7746 CW |
1219 | printk("lec.c: " __DATE__ " " __TIME__ " initialized\n"); |
1220 | return 0; | |
1da177e4 LT |
1221 | } |
1222 | ||
1223 | static void __exit lane_module_cleanup(void) | |
1224 | { | |
d44f7746 CW |
1225 | int i; |
1226 | struct lec_priv *priv; | |
1da177e4 LT |
1227 | |
1228 | remove_proc_entry("lec", atm_proc_root); | |
1229 | ||
1230 | deregister_atm_ioctl(&lane_ioctl_ops); | |
1231 | ||
d44f7746 CW |
1232 | for (i = 0; i < MAX_LEC_ITF; i++) { |
1233 | if (dev_lec[i] != NULL) { | |
524ad0a7 | 1234 | priv = netdev_priv(dev_lec[i]); |
1da177e4 | 1235 | unregister_netdev(dev_lec[i]); |
d44f7746 CW |
1236 | free_netdev(dev_lec[i]); |
1237 | dev_lec[i] = NULL; | |
1238 | } | |
1239 | } | |
1da177e4 | 1240 | |
d44f7746 | 1241 | return; |
1da177e4 LT |
1242 | } |
1243 | ||
1244 | module_init(lane_module_init); | |
1245 | module_exit(lane_module_cleanup); | |
1246 | ||
1247 | /* | |
1248 | * LANE2: 3.1.3, LE_RESOLVE.request | |
1249 | * Non force allocates memory and fills in *tlvs, fills in *sizeoftlvs. | |
1250 | * If sizeoftlvs == NULL the default TLVs associated with with this | |
1251 | * lec will be used. | |
1252 | * If dst_mac == NULL, targetless LE_ARP will be sent | |
1253 | */ | |
61c33e01 | 1254 | static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force, |
d44f7746 | 1255 | u8 **tlvs, u32 *sizeoftlvs) |
1da177e4 LT |
1256 | { |
1257 | unsigned long flags; | |
524ad0a7 | 1258 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
1259 | struct lec_arp_table *table; |
1260 | struct sk_buff *skb; | |
1261 | int retval; | |
1da177e4 | 1262 | |
d44f7746 | 1263 | if (force == 0) { |
1da177e4 | 1264 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d44f7746 | 1265 | table = lec_arp_find(priv, dst_mac); |
1da177e4 | 1266 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
d44f7746 CW |
1267 | if (table == NULL) |
1268 | return -1; | |
1269 | ||
2afe37cd | 1270 | *tlvs = kmemdup(table->tlvs, table->sizeoftlvs, GFP_ATOMIC); |
d44f7746 CW |
1271 | if (*tlvs == NULL) |
1272 | return -1; | |
1273 | ||
d44f7746 CW |
1274 | *sizeoftlvs = table->sizeoftlvs; |
1275 | ||
1276 | return 0; | |
1277 | } | |
1da177e4 LT |
1278 | |
1279 | if (sizeoftlvs == NULL) | |
1280 | retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, NULL); | |
d44f7746 | 1281 | |
1da177e4 LT |
1282 | else { |
1283 | skb = alloc_skb(*sizeoftlvs, GFP_ATOMIC); | |
1284 | if (skb == NULL) | |
1285 | return -1; | |
1286 | skb->len = *sizeoftlvs; | |
27d7ff46 | 1287 | skb_copy_to_linear_data(skb, *tlvs, *sizeoftlvs); |
1da177e4 LT |
1288 | retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb); |
1289 | } | |
d44f7746 CW |
1290 | return retval; |
1291 | } | |
1da177e4 LT |
1292 | |
1293 | /* | |
1294 | * LANE2: 3.1.4, LE_ASSOCIATE.request | |
1295 | * Associate the *tlvs with the *lan_dst address. | |
1296 | * Will overwrite any previous association | |
1297 | * Returns 1 for success, 0 for failure (out of memory) | |
1298 | * | |
1299 | */ | |
61c33e01 MBJ |
1300 | static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst, |
1301 | const u8 *tlvs, u32 sizeoftlvs) | |
1da177e4 | 1302 | { |
d44f7746 CW |
1303 | int retval; |
1304 | struct sk_buff *skb; | |
524ad0a7 | 1305 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
1306 | |
1307 | if (compare_ether_addr(lan_dst, dev->dev_addr)) | |
1308 | return (0); /* not our mac address */ | |
1309 | ||
1310 | kfree(priv->tlvs); /* NULL if there was no previous association */ | |
1311 | ||
2afe37cd | 1312 | priv->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL); |
d44f7746 CW |
1313 | if (priv->tlvs == NULL) |
1314 | return (0); | |
1315 | priv->sizeoftlvs = sizeoftlvs; | |
d44f7746 CW |
1316 | |
1317 | skb = alloc_skb(sizeoftlvs, GFP_ATOMIC); | |
1318 | if (skb == NULL) | |
1319 | return 0; | |
1320 | skb->len = sizeoftlvs; | |
27d7ff46 | 1321 | skb_copy_to_linear_data(skb, tlvs, sizeoftlvs); |
d44f7746 CW |
1322 | retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb); |
1323 | if (retval != 0) | |
1324 | printk("lec.c: lane2_associate_req() failed\n"); | |
1325 | /* | |
1326 | * If the previous association has changed we must | |
1327 | * somehow notify other LANE entities about the change | |
1328 | */ | |
1329 | return (1); | |
1da177e4 LT |
1330 | } |
1331 | ||
1332 | /* | |
1333 | * LANE2: 3.1.5, LE_ASSOCIATE.indication | |
1334 | * | |
1335 | */ | |
61c33e01 MBJ |
1336 | static void lane2_associate_ind(struct net_device *dev, const u8 *mac_addr, |
1337 | const u8 *tlvs, u32 sizeoftlvs) | |
1da177e4 LT |
1338 | { |
1339 | #if 0 | |
d44f7746 | 1340 | int i = 0; |
1da177e4 | 1341 | #endif |
524ad0a7 | 1342 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
1343 | #if 0 /* |
1344 | * Why have the TLVs in LE_ARP entries | |
1345 | * since we do not use them? When you | |
1346 | * uncomment this code, make sure the | |
1347 | * TLVs get freed when entry is killed | |
1348 | */ | |
1349 | struct lec_arp_table *entry = lec_arp_find(priv, mac_addr); | |
1da177e4 | 1350 | |
d44f7746 CW |
1351 | if (entry == NULL) |
1352 | return; /* should not happen */ | |
1da177e4 | 1353 | |
d44f7746 | 1354 | kfree(entry->tlvs); |
1da177e4 | 1355 | |
2afe37cd | 1356 | entry->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL); |
d44f7746 CW |
1357 | if (entry->tlvs == NULL) |
1358 | return; | |
d44f7746 | 1359 | entry->sizeoftlvs = sizeoftlvs; |
1da177e4 LT |
1360 | #endif |
1361 | #if 0 | |
d44f7746 CW |
1362 | printk("lec.c: lane2_associate_ind()\n"); |
1363 | printk("dump of tlvs, sizeoftlvs=%d\n", sizeoftlvs); | |
1364 | while (i < sizeoftlvs) | |
1365 | printk("%02x ", tlvs[i++]); | |
1366 | ||
1367 | printk("\n"); | |
1da177e4 LT |
1368 | #endif |
1369 | ||
d44f7746 CW |
1370 | /* tell MPOA about the TLVs we saw */ |
1371 | if (priv->lane2_ops && priv->lane2_ops->associate_indicator) { | |
1372 | priv->lane2_ops->associate_indicator(dev, mac_addr, | |
1373 | tlvs, sizeoftlvs); | |
1374 | } | |
1375 | return; | |
1da177e4 LT |
1376 | } |
1377 | ||
1378 | /* | |
1379 | * Here starts what used to lec_arpc.c | |
1380 | * | |
1381 | * lec_arpc.c was added here when making | |
1382 | * lane client modular. October 1997 | |
1da177e4 LT |
1383 | */ |
1384 | ||
1385 | #include <linux/types.h> | |
1da177e4 LT |
1386 | #include <linux/timer.h> |
1387 | #include <asm/param.h> | |
1388 | #include <asm/atomic.h> | |
1389 | #include <linux/inetdevice.h> | |
1390 | #include <net/route.h> | |
1391 | ||
1da177e4 | 1392 | #if 0 |
52240062 | 1393 | #define pr_debug(format,args...) |
1da177e4 | 1394 | /* |
52240062 | 1395 | #define pr_debug printk |
1da177e4 LT |
1396 | */ |
1397 | #endif | |
1398 | #define DEBUG_ARP_TABLE 0 | |
1399 | ||
1400 | #define LEC_ARP_REFRESH_INTERVAL (3*HZ) | |
1401 | ||
c4028958 | 1402 | static void lec_arp_check_expire(struct work_struct *work); |
1da177e4 LT |
1403 | static void lec_arp_expire_arp(unsigned long data); |
1404 | ||
f7d57453 | 1405 | /* |
1da177e4 LT |
1406 | * Arp table funcs |
1407 | */ | |
1408 | ||
1409 | #define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE -1)) | |
1410 | ||
1411 | /* | |
1412 | * Initialization of arp-cache | |
1413 | */ | |
1fa9961d | 1414 | static void lec_arp_init(struct lec_priv *priv) |
1da177e4 | 1415 | { |
1fa9961d | 1416 | unsigned short i; |
1da177e4 | 1417 | |
1fa9961d | 1418 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 1419 | INIT_HLIST_HEAD(&priv->lec_arp_tables[i]); |
1fa9961d | 1420 | } |
f7d57453 YH |
1421 | INIT_HLIST_HEAD(&priv->lec_arp_empty_ones); |
1422 | INIT_HLIST_HEAD(&priv->lec_no_forward); | |
1423 | INIT_HLIST_HEAD(&priv->mcast_fwds); | |
1da177e4 | 1424 | spin_lock_init(&priv->lec_arp_lock); |
c4028958 | 1425 | INIT_DELAYED_WORK(&priv->lec_arp_work, lec_arp_check_expire); |
987e46bd | 1426 | schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL); |
1da177e4 LT |
1427 | } |
1428 | ||
1fa9961d | 1429 | static void lec_arp_clear_vccs(struct lec_arp_table *entry) |
1da177e4 | 1430 | { |
1fa9961d | 1431 | if (entry->vcc) { |
1da177e4 LT |
1432 | struct atm_vcc *vcc = entry->vcc; |
1433 | struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); | |
1fa9961d | 1434 | struct net_device *dev = (struct net_device *)vcc->proto_data; |
1da177e4 | 1435 | |
1fa9961d | 1436 | vcc->pop = vpriv->old_pop; |
1da177e4 LT |
1437 | if (vpriv->xoff) |
1438 | netif_wake_queue(dev); | |
1439 | kfree(vpriv); | |
1440 | vcc->user_back = NULL; | |
1fa9961d | 1441 | vcc->push = entry->old_push; |
1da177e4 | 1442 | vcc_release_async(vcc, -EPIPE); |
d0732f64 | 1443 | entry->vcc = NULL; |
1fa9961d CW |
1444 | } |
1445 | if (entry->recv_vcc) { | |
1446 | entry->recv_vcc->push = entry->old_recv_push; | |
1da177e4 | 1447 | vcc_release_async(entry->recv_vcc, -EPIPE); |
1fa9961d CW |
1448 | entry->recv_vcc = NULL; |
1449 | } | |
1da177e4 LT |
1450 | } |
1451 | ||
1452 | /* | |
1453 | * Insert entry to lec_arp_table | |
1454 | * LANE2: Add to the end of the list to satisfy 8.1.13 | |
1455 | */ | |
1fa9961d | 1456 | static inline void |
d0732f64 | 1457 | lec_arp_add(struct lec_priv *priv, struct lec_arp_table *entry) |
1da177e4 | 1458 | { |
d0732f64 | 1459 | struct hlist_head *tmp; |
1fa9961d | 1460 | |
d0732f64 CW |
1461 | tmp = &priv->lec_arp_tables[HASH(entry->mac_addr[ETH_ALEN - 1])]; |
1462 | hlist_add_head(&entry->next, tmp); | |
1fa9961d | 1463 | |
52240062 | 1464 | pr_debug("LEC_ARP: Added entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n", |
d0732f64 CW |
1465 | 0xff & entry->mac_addr[0], 0xff & entry->mac_addr[1], |
1466 | 0xff & entry->mac_addr[2], 0xff & entry->mac_addr[3], | |
1467 | 0xff & entry->mac_addr[4], 0xff & entry->mac_addr[5]); | |
1da177e4 LT |
1468 | } |
1469 | ||
1470 | /* | |
1471 | * Remove entry from lec_arp_table | |
1472 | */ | |
1fa9961d CW |
1473 | static int |
1474 | lec_arp_remove(struct lec_priv *priv, struct lec_arp_table *to_remove) | |
1da177e4 | 1475 | { |
d0732f64 CW |
1476 | struct hlist_node *node; |
1477 | struct lec_arp_table *entry; | |
1478 | int i, remove_vcc = 1; | |
1fa9961d CW |
1479 | |
1480 | if (!to_remove) { | |
1481 | return -1; | |
1482 | } | |
d0732f64 CW |
1483 | |
1484 | hlist_del(&to_remove->next); | |
1fa9961d CW |
1485 | del_timer(&to_remove->timer); |
1486 | ||
d0732f64 | 1487 | /* If this is the only MAC connected to this VCC, also tear down the VCC */ |
1fa9961d CW |
1488 | if (to_remove->status >= ESI_FLUSH_PENDING) { |
1489 | /* | |
1490 | * ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT | |
1491 | */ | |
d0732f64 CW |
1492 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
1493 | hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) { | |
1494 | if (memcmp(to_remove->atm_addr, | |
1495 | entry->atm_addr, ATM_ESA_LEN) == 0) { | |
1fa9961d CW |
1496 | remove_vcc = 0; |
1497 | break; | |
1498 | } | |
1499 | } | |
1500 | } | |
1501 | if (remove_vcc) | |
1502 | lec_arp_clear_vccs(to_remove); | |
1503 | } | |
1504 | skb_queue_purge(&to_remove->tx_wait); /* FIXME: good place for this? */ | |
1505 | ||
52240062 | 1506 | pr_debug("LEC_ARP: Removed entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n", |
1fa9961d CW |
1507 | 0xff & to_remove->mac_addr[0], 0xff & to_remove->mac_addr[1], |
1508 | 0xff & to_remove->mac_addr[2], 0xff & to_remove->mac_addr[3], | |
1509 | 0xff & to_remove->mac_addr[4], 0xff & to_remove->mac_addr[5]); | |
1510 | return 0; | |
1da177e4 LT |
1511 | } |
1512 | ||
1513 | #if DEBUG_ARP_TABLE | |
1fa9961d | 1514 | static char *get_status_string(unsigned char st) |
1da177e4 | 1515 | { |
1fa9961d CW |
1516 | switch (st) { |
1517 | case ESI_UNKNOWN: | |
1518 | return "ESI_UNKNOWN"; | |
1519 | case ESI_ARP_PENDING: | |
1520 | return "ESI_ARP_PENDING"; | |
1521 | case ESI_VC_PENDING: | |
1522 | return "ESI_VC_PENDING"; | |
1523 | case ESI_FLUSH_PENDING: | |
1524 | return "ESI_FLUSH_PENDING"; | |
1525 | case ESI_FORWARD_DIRECT: | |
1526 | return "ESI_FORWARD_DIRECT"; | |
1527 | default: | |
1528 | return "<UNKNOWN>"; | |
1529 | } | |
1da177e4 | 1530 | } |
1da177e4 | 1531 | |
1fa9961d | 1532 | static void dump_arp_table(struct lec_priv *priv) |
1da177e4 | 1533 | { |
d0732f64 | 1534 | struct hlist_node *node; |
1fa9961d | 1535 | struct lec_arp_table *rulla; |
d0732f64 CW |
1536 | char buf[256]; |
1537 | int i, j, offset; | |
1fa9961d CW |
1538 | |
1539 | printk("Dump %p:\n", priv); | |
1540 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
d0732f64 CW |
1541 | hlist_for_each_entry(rulla, node, &priv->lec_arp_tables[i], next) { |
1542 | offset = 0; | |
1543 | offset += sprintf(buf, "%d: %p\n", i, rulla); | |
1fa9961d CW |
1544 | offset += sprintf(buf + offset, "Mac:"); |
1545 | for (j = 0; j < ETH_ALEN; j++) { | |
1546 | offset += sprintf(buf + offset, | |
1547 | "%2.2x ", | |
1548 | rulla->mac_addr[j] & 0xff); | |
1549 | } | |
1550 | offset += sprintf(buf + offset, "Atm:"); | |
1551 | for (j = 0; j < ATM_ESA_LEN; j++) { | |
1552 | offset += sprintf(buf + offset, | |
1553 | "%2.2x ", | |
1554 | rulla->atm_addr[j] & 0xff); | |
1555 | } | |
1556 | offset += sprintf(buf + offset, | |
1557 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1558 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1559 | rulla->vcc ? rulla->vcc->vci : 0, | |
1560 | rulla->recv_vcc ? rulla->recv_vcc-> | |
1561 | vpi : 0, | |
1562 | rulla->recv_vcc ? rulla->recv_vcc-> | |
1563 | vci : 0, rulla->last_used, | |
1564 | rulla->timestamp, rulla->no_tries); | |
1565 | offset += | |
1566 | sprintf(buf + offset, | |
1567 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1568 | rulla->flags, rulla->packets_flooded, | |
1569 | get_status_string(rulla->status)); | |
d0732f64 | 1570 | printk("%s\n", buf); |
1fa9961d | 1571 | } |
1fa9961d | 1572 | } |
d0732f64 CW |
1573 | |
1574 | if (!hlist_empty(&priv->lec_no_forward)) | |
1fa9961d | 1575 | printk("No forward\n"); |
d0732f64 | 1576 | hlist_for_each_entry(rulla, node, &priv->lec_no_forward, next) { |
1fa9961d CW |
1577 | offset = 0; |
1578 | offset += sprintf(buf + offset, "Mac:"); | |
1579 | for (j = 0; j < ETH_ALEN; j++) { | |
1580 | offset += sprintf(buf + offset, "%2.2x ", | |
1581 | rulla->mac_addr[j] & 0xff); | |
1582 | } | |
1583 | offset += sprintf(buf + offset, "Atm:"); | |
1584 | for (j = 0; j < ATM_ESA_LEN; j++) { | |
1585 | offset += sprintf(buf + offset, "%2.2x ", | |
1586 | rulla->atm_addr[j] & 0xff); | |
1587 | } | |
1588 | offset += sprintf(buf + offset, | |
1589 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1590 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1591 | rulla->vcc ? rulla->vcc->vci : 0, | |
1592 | rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, | |
1593 | rulla->recv_vcc ? rulla->recv_vcc->vci : 0, | |
1594 | rulla->last_used, | |
1595 | rulla->timestamp, rulla->no_tries); | |
1596 | offset += sprintf(buf + offset, | |
1597 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1598 | rulla->flags, rulla->packets_flooded, | |
1599 | get_status_string(rulla->status)); | |
d0732f64 | 1600 | printk("%s\n", buf); |
1fa9961d | 1601 | } |
d0732f64 CW |
1602 | |
1603 | if (!hlist_empty(&priv->lec_arp_empty_ones)) | |
1fa9961d | 1604 | printk("Empty ones\n"); |
d0732f64 | 1605 | hlist_for_each_entry(rulla, node, &priv->lec_arp_empty_ones, next) { |
1fa9961d CW |
1606 | offset = 0; |
1607 | offset += sprintf(buf + offset, "Mac:"); | |
1608 | for (j = 0; j < ETH_ALEN; j++) { | |
1609 | offset += sprintf(buf + offset, "%2.2x ", | |
1610 | rulla->mac_addr[j] & 0xff); | |
1611 | } | |
1612 | offset += sprintf(buf + offset, "Atm:"); | |
1613 | for (j = 0; j < ATM_ESA_LEN; j++) { | |
1614 | offset += sprintf(buf + offset, "%2.2x ", | |
1615 | rulla->atm_addr[j] & 0xff); | |
1616 | } | |
1617 | offset += sprintf(buf + offset, | |
1618 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1619 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1620 | rulla->vcc ? rulla->vcc->vci : 0, | |
1621 | rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, | |
1622 | rulla->recv_vcc ? rulla->recv_vcc->vci : 0, | |
1623 | rulla->last_used, | |
1624 | rulla->timestamp, rulla->no_tries); | |
1625 | offset += sprintf(buf + offset, | |
1626 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1627 | rulla->flags, rulla->packets_flooded, | |
1628 | get_status_string(rulla->status)); | |
1fa9961d CW |
1629 | printk("%s", buf); |
1630 | } | |
1631 | ||
d0732f64 | 1632 | if (!hlist_empty(&priv->mcast_fwds)) |
1fa9961d | 1633 | printk("Multicast Forward VCCs\n"); |
d0732f64 | 1634 | hlist_for_each_entry(rulla, node, &priv->mcast_fwds, next) { |
1fa9961d CW |
1635 | offset = 0; |
1636 | offset += sprintf(buf + offset, "Mac:"); | |
1637 | for (j = 0; j < ETH_ALEN; j++) { | |
1638 | offset += sprintf(buf + offset, "%2.2x ", | |
1639 | rulla->mac_addr[j] & 0xff); | |
1640 | } | |
1641 | offset += sprintf(buf + offset, "Atm:"); | |
1642 | for (j = 0; j < ATM_ESA_LEN; j++) { | |
1643 | offset += sprintf(buf + offset, "%2.2x ", | |
1644 | rulla->atm_addr[j] & 0xff); | |
1645 | } | |
1646 | offset += sprintf(buf + offset, | |
1647 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1648 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1649 | rulla->vcc ? rulla->vcc->vci : 0, | |
1650 | rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, | |
1651 | rulla->recv_vcc ? rulla->recv_vcc->vci : 0, | |
1652 | rulla->last_used, | |
1653 | rulla->timestamp, rulla->no_tries); | |
1654 | offset += sprintf(buf + offset, | |
1655 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1656 | rulla->flags, rulla->packets_flooded, | |
1657 | get_status_string(rulla->status)); | |
d0732f64 | 1658 | printk("%s\n", buf); |
1fa9961d | 1659 | } |
1da177e4 | 1660 | |
1da177e4 | 1661 | } |
d0732f64 CW |
1662 | #else |
1663 | #define dump_arp_table(priv) do { } while (0) | |
1664 | #endif | |
1da177e4 LT |
1665 | |
1666 | /* | |
1667 | * Destruction of arp-cache | |
1668 | */ | |
1fa9961d | 1669 | static void lec_arp_destroy(struct lec_priv *priv) |
1da177e4 LT |
1670 | { |
1671 | unsigned long flags; | |
d0732f64 CW |
1672 | struct hlist_node *node, *next; |
1673 | struct lec_arp_table *entry; | |
1fa9961d CW |
1674 | int i; |
1675 | ||
987e46bd | 1676 | cancel_rearming_delayed_work(&priv->lec_arp_work); |
1da177e4 | 1677 | |
1fa9961d CW |
1678 | /* |
1679 | * Remove all entries | |
1680 | */ | |
1da177e4 LT |
1681 | |
1682 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d | 1683 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 1684 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) { |
1fa9961d | 1685 | lec_arp_remove(priv, entry); |
33a9c2d4 | 1686 | lec_arp_put(entry); |
1fa9961d | 1687 | } |
d0732f64 | 1688 | INIT_HLIST_HEAD(&priv->lec_arp_tables[i]); |
1fa9961d | 1689 | } |
d0732f64 CW |
1690 | |
1691 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) { | |
1fa9961d CW |
1692 | del_timer_sync(&entry->timer); |
1693 | lec_arp_clear_vccs(entry); | |
d0732f64 | 1694 | hlist_del(&entry->next); |
33a9c2d4 | 1695 | lec_arp_put(entry); |
1fa9961d | 1696 | } |
d0732f64 CW |
1697 | INIT_HLIST_HEAD(&priv->lec_arp_empty_ones); |
1698 | ||
1699 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_no_forward, next) { | |
1fa9961d CW |
1700 | del_timer_sync(&entry->timer); |
1701 | lec_arp_clear_vccs(entry); | |
d0732f64 | 1702 | hlist_del(&entry->next); |
33a9c2d4 | 1703 | lec_arp_put(entry); |
1fa9961d | 1704 | } |
d0732f64 CW |
1705 | INIT_HLIST_HEAD(&priv->lec_no_forward); |
1706 | ||
1707 | hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) { | |
1fa9961d CW |
1708 | /* No timer, LANEv2 7.1.20 and 2.3.5.3 */ |
1709 | lec_arp_clear_vccs(entry); | |
d0732f64 | 1710 | hlist_del(&entry->next); |
33a9c2d4 | 1711 | lec_arp_put(entry); |
1fa9961d | 1712 | } |
d0732f64 | 1713 | INIT_HLIST_HEAD(&priv->mcast_fwds); |
1fa9961d | 1714 | priv->mcast_vcc = NULL; |
1da177e4 LT |
1715 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1716 | } | |
1717 | ||
f7d57453 | 1718 | /* |
1da177e4 LT |
1719 | * Find entry by mac_address |
1720 | */ | |
1fa9961d | 1721 | static struct lec_arp_table *lec_arp_find(struct lec_priv *priv, |
61c33e01 | 1722 | const unsigned char *mac_addr) |
1da177e4 | 1723 | { |
d0732f64 CW |
1724 | struct hlist_node *node; |
1725 | struct hlist_head *head; | |
1726 | struct lec_arp_table *entry; | |
1fa9961d | 1727 | |
52240062 | 1728 | pr_debug("LEC_ARP: lec_arp_find :%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n", |
1fa9961d CW |
1729 | mac_addr[0] & 0xff, mac_addr[1] & 0xff, mac_addr[2] & 0xff, |
1730 | mac_addr[3] & 0xff, mac_addr[4] & 0xff, mac_addr[5] & 0xff); | |
1fa9961d | 1731 | |
d0732f64 CW |
1732 | head = &priv->lec_arp_tables[HASH(mac_addr[ETH_ALEN - 1])]; |
1733 | hlist_for_each_entry(entry, node, head, next) { | |
1734 | if (!compare_ether_addr(mac_addr, entry->mac_addr)) { | |
1735 | return entry; | |
1fa9961d | 1736 | } |
1fa9961d CW |
1737 | } |
1738 | return NULL; | |
1da177e4 LT |
1739 | } |
1740 | ||
1fa9961d | 1741 | static struct lec_arp_table *make_entry(struct lec_priv *priv, |
61c33e01 | 1742 | const unsigned char *mac_addr) |
1da177e4 | 1743 | { |
1fa9961d CW |
1744 | struct lec_arp_table *to_return; |
1745 | ||
1746 | to_return = kzalloc(sizeof(struct lec_arp_table), GFP_ATOMIC); | |
1747 | if (!to_return) { | |
1748 | printk("LEC: Arp entry kmalloc failed\n"); | |
1749 | return NULL; | |
1750 | } | |
1751 | memcpy(to_return->mac_addr, mac_addr, ETH_ALEN); | |
d0732f64 | 1752 | INIT_HLIST_NODE(&to_return->next); |
b24b8a24 PE |
1753 | setup_timer(&to_return->timer, lec_arp_expire_arp, |
1754 | (unsigned long)to_return); | |
1fa9961d CW |
1755 | to_return->last_used = jiffies; |
1756 | to_return->priv = priv; | |
1757 | skb_queue_head_init(&to_return->tx_wait); | |
33a9c2d4 | 1758 | atomic_set(&to_return->usage, 1); |
1fa9961d | 1759 | return to_return; |
1da177e4 LT |
1760 | } |
1761 | ||
1fa9961d CW |
1762 | /* Arp sent timer expired */ |
1763 | static void lec_arp_expire_arp(unsigned long data) | |
1da177e4 | 1764 | { |
1fa9961d CW |
1765 | struct lec_arp_table *entry; |
1766 | ||
1767 | entry = (struct lec_arp_table *)data; | |
1768 | ||
52240062 | 1769 | pr_debug("lec_arp_expire_arp\n"); |
1fa9961d CW |
1770 | if (entry->status == ESI_ARP_PENDING) { |
1771 | if (entry->no_tries <= entry->priv->max_retry_count) { | |
1772 | if (entry->is_rdesc) | |
1773 | send_to_lecd(entry->priv, l_rdesc_arp_xmt, | |
1774 | entry->mac_addr, NULL, NULL); | |
1775 | else | |
1776 | send_to_lecd(entry->priv, l_arp_xmt, | |
1777 | entry->mac_addr, NULL, NULL); | |
1778 | entry->no_tries++; | |
1779 | } | |
1780 | mod_timer(&entry->timer, jiffies + (1 * HZ)); | |
1781 | } | |
1da177e4 LT |
1782 | } |
1783 | ||
1fa9961d CW |
1784 | /* Unknown/unused vcc expire, remove associated entry */ |
1785 | static void lec_arp_expire_vcc(unsigned long data) | |
1da177e4 LT |
1786 | { |
1787 | unsigned long flags; | |
1fa9961d CW |
1788 | struct lec_arp_table *to_remove = (struct lec_arp_table *)data; |
1789 | struct lec_priv *priv = (struct lec_priv *)to_remove->priv; | |
1da177e4 | 1790 | |
1fa9961d | 1791 | del_timer(&to_remove->timer); |
1da177e4 | 1792 | |
52240062 | 1793 | pr_debug("LEC_ARP %p %p: lec_arp_expire_vcc vpi:%d vci:%d\n", |
1fa9961d CW |
1794 | to_remove, priv, |
1795 | to_remove->vcc ? to_remove->recv_vcc->vpi : 0, | |
1796 | to_remove->vcc ? to_remove->recv_vcc->vci : 0); | |
1da177e4 LT |
1797 | |
1798 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
d0732f64 | 1799 | hlist_del(&to_remove->next); |
1da177e4 LT |
1800 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1801 | ||
1fa9961d | 1802 | lec_arp_clear_vccs(to_remove); |
33a9c2d4 | 1803 | lec_arp_put(to_remove); |
1da177e4 LT |
1804 | } |
1805 | ||
1806 | /* | |
1807 | * Expire entries. | |
1808 | * 1. Re-set timer | |
1809 | * 2. For each entry, delete entries that have aged past the age limit. | |
1810 | * 3. For each entry, depending on the status of the entry, perform | |
1811 | * the following maintenance. | |
1812 | * a. If status is ESI_VC_PENDING or ESI_ARP_PENDING then if the | |
1813 | * tick_count is above the max_unknown_frame_time, clear | |
1814 | * the tick_count to zero and clear the packets_flooded counter | |
1815 | * to zero. This supports the packet rate limit per address | |
1816 | * while flooding unknowns. | |
1817 | * b. If the status is ESI_FLUSH_PENDING and the tick_count is greater | |
1818 | * than or equal to the path_switching_delay, change the status | |
1819 | * to ESI_FORWARD_DIRECT. This causes the flush period to end | |
1820 | * regardless of the progress of the flush protocol. | |
1821 | */ | |
c4028958 | 1822 | static void lec_arp_check_expire(struct work_struct *work) |
1da177e4 LT |
1823 | { |
1824 | unsigned long flags; | |
c4028958 DH |
1825 | struct lec_priv *priv = |
1826 | container_of(work, struct lec_priv, lec_arp_work.work); | |
d0732f64 CW |
1827 | struct hlist_node *node, *next; |
1828 | struct lec_arp_table *entry; | |
1fa9961d CW |
1829 | unsigned long now; |
1830 | unsigned long time_to_check; | |
1831 | int i; | |
1832 | ||
52240062 | 1833 | pr_debug("lec_arp_check_expire %p\n", priv); |
1da177e4 | 1834 | now = jiffies; |
6656e3c4 | 1835 | restart: |
1da177e4 | 1836 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d | 1837 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 1838 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) { |
1fa9961d | 1839 | if ((entry->flags) & LEC_REMOTE_FLAG && |
1da177e4 LT |
1840 | priv->topology_change) |
1841 | time_to_check = priv->forward_delay_time; | |
1842 | else | |
1843 | time_to_check = priv->aging_time; | |
1844 | ||
52240062 | 1845 | pr_debug("About to expire: %lx - %lx > %lx\n", |
1fa9961d CW |
1846 | now, entry->last_used, time_to_check); |
1847 | if (time_after(now, entry->last_used + time_to_check) | |
1848 | && !(entry->flags & LEC_PERMANENT_FLAG) | |
1849 | && !(entry->mac_addr[0] & 0x01)) { /* LANE2: 7.1.20 */ | |
1da177e4 | 1850 | /* Remove entry */ |
52240062 | 1851 | pr_debug("LEC:Entry timed out\n"); |
1da177e4 | 1852 | lec_arp_remove(priv, entry); |
33a9c2d4 | 1853 | lec_arp_put(entry); |
1da177e4 LT |
1854 | } else { |
1855 | /* Something else */ | |
1856 | if ((entry->status == ESI_VC_PENDING || | |
1fa9961d | 1857 | entry->status == ESI_ARP_PENDING) |
1da177e4 | 1858 | && time_after_eq(now, |
1fa9961d CW |
1859 | entry->timestamp + |
1860 | priv-> | |
1861 | max_unknown_frame_time)) { | |
1da177e4 LT |
1862 | entry->timestamp = jiffies; |
1863 | entry->packets_flooded = 0; | |
1864 | if (entry->status == ESI_VC_PENDING) | |
1fa9961d CW |
1865 | send_to_lecd(priv, l_svc_setup, |
1866 | entry->mac_addr, | |
1867 | entry->atm_addr, | |
1868 | NULL); | |
1da177e4 | 1869 | } |
1fa9961d CW |
1870 | if (entry->status == ESI_FLUSH_PENDING |
1871 | && | |
1872 | time_after_eq(now, entry->timestamp + | |
1873 | priv->path_switching_delay)) { | |
1da177e4 | 1874 | struct sk_buff *skb; |
6656e3c4 | 1875 | struct atm_vcc *vcc = entry->vcc; |
1da177e4 | 1876 | |
6656e3c4 CW |
1877 | lec_arp_hold(entry); |
1878 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1879 | while ((skb = skb_dequeue(&entry->tx_wait)) != NULL) | |
162619e5 | 1880 | lec_send(vcc, skb); |
1da177e4 | 1881 | entry->last_used = jiffies; |
1fa9961d | 1882 | entry->status = ESI_FORWARD_DIRECT; |
6656e3c4 CW |
1883 | lec_arp_put(entry); |
1884 | goto restart; | |
1da177e4 | 1885 | } |
1da177e4 LT |
1886 | } |
1887 | } | |
1888 | } | |
1889 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1890 | ||
987e46bd | 1891 | schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL); |
1da177e4 | 1892 | } |
1fa9961d | 1893 | |
1da177e4 LT |
1894 | /* |
1895 | * Try to find vcc where mac_address is attached. | |
f7d57453 | 1896 | * |
1da177e4 | 1897 | */ |
1fa9961d | 1898 | static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv, |
61c33e01 | 1899 | const unsigned char *mac_to_find, int is_rdesc, |
1fa9961d | 1900 | struct lec_arp_table **ret_entry) |
1da177e4 LT |
1901 | { |
1902 | unsigned long flags; | |
1fa9961d | 1903 | struct lec_arp_table *entry; |
1da177e4 LT |
1904 | struct atm_vcc *found; |
1905 | ||
1fa9961d CW |
1906 | if (mac_to_find[0] & 0x01) { |
1907 | switch (priv->lane_version) { | |
1908 | case 1: | |
1909 | return priv->mcast_vcc; | |
1fa9961d CW |
1910 | case 2: /* LANE2 wants arp for multicast addresses */ |
1911 | if (!compare_ether_addr(mac_to_find, bus_mac)) | |
1912 | return priv->mcast_vcc; | |
1913 | break; | |
1914 | default: | |
1915 | break; | |
1916 | } | |
1917 | } | |
1da177e4 LT |
1918 | |
1919 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d CW |
1920 | entry = lec_arp_find(priv, mac_to_find); |
1921 | ||
1922 | if (entry) { | |
1923 | if (entry->status == ESI_FORWARD_DIRECT) { | |
1924 | /* Connection Ok */ | |
1925 | entry->last_used = jiffies; | |
6656e3c4 | 1926 | lec_arp_hold(entry); |
1fa9961d CW |
1927 | *ret_entry = entry; |
1928 | found = entry->vcc; | |
1da177e4 | 1929 | goto out; |
1fa9961d CW |
1930 | } |
1931 | /* | |
1932 | * If the LE_ARP cache entry is still pending, reset count to 0 | |
75b895c1 ST |
1933 | * so another LE_ARP request can be made for this frame. |
1934 | */ | |
1935 | if (entry->status == ESI_ARP_PENDING) { | |
1936 | entry->no_tries = 0; | |
1937 | } | |
1fa9961d CW |
1938 | /* |
1939 | * Data direct VC not yet set up, check to see if the unknown | |
1940 | * frame count is greater than the limit. If the limit has | |
1941 | * not been reached, allow the caller to send packet to | |
1942 | * BUS. | |
1943 | */ | |
1944 | if (entry->status != ESI_FLUSH_PENDING && | |
1945 | entry->packets_flooded < | |
1946 | priv->maximum_unknown_frame_count) { | |
1947 | entry->packets_flooded++; | |
52240062 | 1948 | pr_debug("LEC_ARP: Flooding..\n"); |
1fa9961d | 1949 | found = priv->mcast_vcc; |
1da177e4 | 1950 | goto out; |
1fa9961d CW |
1951 | } |
1952 | /* | |
1953 | * We got here because entry->status == ESI_FLUSH_PENDING | |
1da177e4 LT |
1954 | * or BUS flood limit was reached for an entry which is |
1955 | * in ESI_ARP_PENDING or ESI_VC_PENDING state. | |
1956 | */ | |
6656e3c4 | 1957 | lec_arp_hold(entry); |
1fa9961d | 1958 | *ret_entry = entry; |
52240062 | 1959 | pr_debug("lec: entry->status %d entry->vcc %p\n", entry->status, |
1fa9961d CW |
1960 | entry->vcc); |
1961 | found = NULL; | |
1962 | } else { | |
1963 | /* No matching entry was found */ | |
1964 | entry = make_entry(priv, mac_to_find); | |
52240062 | 1965 | pr_debug("LEC_ARP: Making entry\n"); |
1fa9961d CW |
1966 | if (!entry) { |
1967 | found = priv->mcast_vcc; | |
1da177e4 | 1968 | goto out; |
1fa9961d CW |
1969 | } |
1970 | lec_arp_add(priv, entry); | |
1971 | /* We want arp-request(s) to be sent */ | |
1972 | entry->packets_flooded = 1; | |
1973 | entry->status = ESI_ARP_PENDING; | |
1974 | entry->no_tries = 1; | |
1975 | entry->last_used = entry->timestamp = jiffies; | |
1976 | entry->is_rdesc = is_rdesc; | |
1977 | if (entry->is_rdesc) | |
1978 | send_to_lecd(priv, l_rdesc_arp_xmt, mac_to_find, NULL, | |
1979 | NULL); | |
1980 | else | |
1981 | send_to_lecd(priv, l_arp_xmt, mac_to_find, NULL, NULL); | |
1982 | entry->timer.expires = jiffies + (1 * HZ); | |
1983 | entry->timer.function = lec_arp_expire_arp; | |
1984 | add_timer(&entry->timer); | |
1985 | found = priv->mcast_vcc; | |
1986 | } | |
1da177e4 LT |
1987 | |
1988 | out: | |
1989 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1990 | return found; | |
1991 | } | |
1992 | ||
1993 | static int | |
61c33e01 | 1994 | lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr, |
1fa9961d | 1995 | unsigned long permanent) |
1da177e4 LT |
1996 | { |
1997 | unsigned long flags; | |
d0732f64 CW |
1998 | struct hlist_node *node, *next; |
1999 | struct lec_arp_table *entry; | |
1fa9961d | 2000 | int i; |
1da177e4 | 2001 | |
52240062 | 2002 | pr_debug("lec_addr_delete\n"); |
1da177e4 | 2003 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d | 2004 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 2005 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2006 | if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN) |
2007 | && (permanent || | |
2008 | !(entry->flags & LEC_PERMANENT_FLAG))) { | |
1da177e4 | 2009 | lec_arp_remove(priv, entry); |
33a9c2d4 | 2010 | lec_arp_put(entry); |
1fa9961d | 2011 | } |
1da177e4 | 2012 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d CW |
2013 | return 0; |
2014 | } | |
2015 | } | |
1da177e4 | 2016 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d | 2017 | return -1; |
1da177e4 LT |
2018 | } |
2019 | ||
2020 | /* | |
f7d57453 | 2021 | * Notifies: Response to arp_request (atm_addr != NULL) |
1da177e4 LT |
2022 | */ |
2023 | static void | |
61c33e01 MBJ |
2024 | lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr, |
2025 | const unsigned char *atm_addr, unsigned long remoteflag, | |
1fa9961d | 2026 | unsigned int targetless_le_arp) |
1da177e4 LT |
2027 | { |
2028 | unsigned long flags; | |
d0732f64 | 2029 | struct hlist_node *node, *next; |
1fa9961d CW |
2030 | struct lec_arp_table *entry, *tmp; |
2031 | int i; | |
1da177e4 | 2032 | |
52240062 SH |
2033 | pr_debug("lec:%s", (targetless_le_arp) ? "targetless " : " "); |
2034 | pr_debug("lec_arp_update mac:%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n", | |
1fa9961d CW |
2035 | mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], |
2036 | mac_addr[4], mac_addr[5]); | |
1da177e4 LT |
2037 | |
2038 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d CW |
2039 | entry = lec_arp_find(priv, mac_addr); |
2040 | if (entry == NULL && targetless_le_arp) | |
2041 | goto out; /* | |
2042 | * LANE2: ignore targetless LE_ARPs for which | |
2043 | * we have no entry in the cache. 7.1.30 | |
2044 | */ | |
d0732f64 CW |
2045 | if (!hlist_empty(&priv->lec_arp_empty_ones)) { |
2046 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) { | |
2047 | if (memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN) == 0) { | |
2048 | hlist_del(&entry->next); | |
1fa9961d | 2049 | del_timer(&entry->timer); |
d0732f64 CW |
2050 | tmp = lec_arp_find(priv, mac_addr); |
2051 | if (tmp) { | |
2052 | del_timer(&tmp->timer); | |
2053 | tmp->status = ESI_FORWARD_DIRECT; | |
2054 | memcpy(tmp->atm_addr, atm_addr, ATM_ESA_LEN); | |
2055 | tmp->vcc = entry->vcc; | |
2056 | tmp->old_push = entry->old_push; | |
2057 | tmp->last_used = jiffies; | |
2058 | del_timer(&entry->timer); | |
33a9c2d4 | 2059 | lec_arp_put(entry); |
d0732f64 CW |
2060 | entry = tmp; |
2061 | } else { | |
2062 | entry->status = ESI_FORWARD_DIRECT; | |
2063 | memcpy(entry->mac_addr, mac_addr, ETH_ALEN); | |
2064 | entry->last_used = jiffies; | |
2065 | lec_arp_add(priv, entry); | |
2066 | } | |
2067 | if (remoteflag) | |
2068 | entry->flags |= LEC_REMOTE_FLAG; | |
2069 | else | |
2070 | entry->flags &= ~LEC_REMOTE_FLAG; | |
52240062 | 2071 | pr_debug("After update\n"); |
d0732f64 CW |
2072 | dump_arp_table(priv); |
2073 | goto out; | |
1fa9961d | 2074 | } |
1fa9961d CW |
2075 | } |
2076 | } | |
d0732f64 | 2077 | |
1fa9961d CW |
2078 | entry = lec_arp_find(priv, mac_addr); |
2079 | if (!entry) { | |
2080 | entry = make_entry(priv, mac_addr); | |
2081 | if (!entry) | |
2082 | goto out; | |
2083 | entry->status = ESI_UNKNOWN; | |
2084 | lec_arp_add(priv, entry); | |
2085 | /* Temporary, changes before end of function */ | |
2086 | } | |
2087 | memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN); | |
2088 | del_timer(&entry->timer); | |
2089 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
d0732f64 | 2090 | hlist_for_each_entry(tmp, node, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2091 | if (entry != tmp && |
2092 | !memcmp(tmp->atm_addr, atm_addr, ATM_ESA_LEN)) { | |
2093 | /* Vcc to this host exists */ | |
2094 | if (tmp->status > ESI_VC_PENDING) { | |
2095 | /* | |
2096 | * ESI_FLUSH_PENDING, | |
2097 | * ESI_FORWARD_DIRECT | |
2098 | */ | |
2099 | entry->vcc = tmp->vcc; | |
2100 | entry->old_push = tmp->old_push; | |
2101 | } | |
2102 | entry->status = tmp->status; | |
2103 | break; | |
2104 | } | |
2105 | } | |
2106 | } | |
2107 | if (remoteflag) | |
2108 | entry->flags |= LEC_REMOTE_FLAG; | |
2109 | else | |
2110 | entry->flags &= ~LEC_REMOTE_FLAG; | |
2111 | if (entry->status == ESI_ARP_PENDING || entry->status == ESI_UNKNOWN) { | |
2112 | entry->status = ESI_VC_PENDING; | |
d0732f64 | 2113 | send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL); |
1fa9961d | 2114 | } |
52240062 | 2115 | pr_debug("After update2\n"); |
1fa9961d | 2116 | dump_arp_table(priv); |
1da177e4 LT |
2117 | out: |
2118 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2119 | } | |
2120 | ||
2121 | /* | |
f7d57453 | 2122 | * Notifies: Vcc setup ready |
1da177e4 LT |
2123 | */ |
2124 | static void | |
61c33e01 | 2125 | lec_vcc_added(struct lec_priv *priv, const struct atmlec_ioc *ioc_data, |
1fa9961d CW |
2126 | struct atm_vcc *vcc, |
2127 | void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb)) | |
1da177e4 LT |
2128 | { |
2129 | unsigned long flags; | |
d0732f64 | 2130 | struct hlist_node *node; |
1fa9961d CW |
2131 | struct lec_arp_table *entry; |
2132 | int i, found_entry = 0; | |
1da177e4 LT |
2133 | |
2134 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d CW |
2135 | if (ioc_data->receive == 2) { |
2136 | /* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */ | |
1da177e4 | 2137 | |
52240062 | 2138 | pr_debug("LEC_ARP: Attaching mcast forward\n"); |
1da177e4 | 2139 | #if 0 |
1fa9961d CW |
2140 | entry = lec_arp_find(priv, bus_mac); |
2141 | if (!entry) { | |
2142 | printk("LEC_ARP: Multicast entry not found!\n"); | |
1da177e4 | 2143 | goto out; |
1fa9961d CW |
2144 | } |
2145 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); | |
2146 | entry->recv_vcc = vcc; | |
2147 | entry->old_recv_push = old_push; | |
1da177e4 | 2148 | #endif |
1fa9961d CW |
2149 | entry = make_entry(priv, bus_mac); |
2150 | if (entry == NULL) | |
1da177e4 | 2151 | goto out; |
1fa9961d CW |
2152 | del_timer(&entry->timer); |
2153 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); | |
2154 | entry->recv_vcc = vcc; | |
2155 | entry->old_recv_push = old_push; | |
d0732f64 | 2156 | hlist_add_head(&entry->next, &priv->mcast_fwds); |
1fa9961d CW |
2157 | goto out; |
2158 | } else if (ioc_data->receive == 1) { | |
2159 | /* | |
2160 | * Vcc which we don't want to make default vcc, | |
2161 | * attach it anyway. | |
2162 | */ | |
52240062 | 2163 | pr_debug |
1fa9961d CW |
2164 | ("LEC_ARP:Attaching data direct, not default: " |
2165 | "%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n", | |
2166 | ioc_data->atm_addr[0], ioc_data->atm_addr[1], | |
2167 | ioc_data->atm_addr[2], ioc_data->atm_addr[3], | |
2168 | ioc_data->atm_addr[4], ioc_data->atm_addr[5], | |
2169 | ioc_data->atm_addr[6], ioc_data->atm_addr[7], | |
2170 | ioc_data->atm_addr[8], ioc_data->atm_addr[9], | |
2171 | ioc_data->atm_addr[10], ioc_data->atm_addr[11], | |
2172 | ioc_data->atm_addr[12], ioc_data->atm_addr[13], | |
2173 | ioc_data->atm_addr[14], ioc_data->atm_addr[15], | |
2174 | ioc_data->atm_addr[16], ioc_data->atm_addr[17], | |
2175 | ioc_data->atm_addr[18], ioc_data->atm_addr[19]); | |
2176 | entry = make_entry(priv, bus_mac); | |
2177 | if (entry == NULL) | |
1da177e4 | 2178 | goto out; |
1fa9961d CW |
2179 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); |
2180 | memset(entry->mac_addr, 0, ETH_ALEN); | |
2181 | entry->recv_vcc = vcc; | |
2182 | entry->old_recv_push = old_push; | |
2183 | entry->status = ESI_UNKNOWN; | |
2184 | entry->timer.expires = jiffies + priv->vcc_timeout_period; | |
2185 | entry->timer.function = lec_arp_expire_vcc; | |
d0732f64 | 2186 | hlist_add_head(&entry->next, &priv->lec_no_forward); |
1fa9961d | 2187 | add_timer(&entry->timer); |
1da177e4 LT |
2188 | dump_arp_table(priv); |
2189 | goto out; | |
1fa9961d | 2190 | } |
52240062 | 2191 | pr_debug |
1fa9961d CW |
2192 | ("LEC_ARP:Attaching data direct, default: " |
2193 | "%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n", | |
2194 | ioc_data->atm_addr[0], ioc_data->atm_addr[1], | |
2195 | ioc_data->atm_addr[2], ioc_data->atm_addr[3], | |
2196 | ioc_data->atm_addr[4], ioc_data->atm_addr[5], | |
2197 | ioc_data->atm_addr[6], ioc_data->atm_addr[7], | |
2198 | ioc_data->atm_addr[8], ioc_data->atm_addr[9], | |
2199 | ioc_data->atm_addr[10], ioc_data->atm_addr[11], | |
2200 | ioc_data->atm_addr[12], ioc_data->atm_addr[13], | |
2201 | ioc_data->atm_addr[14], ioc_data->atm_addr[15], | |
2202 | ioc_data->atm_addr[16], ioc_data->atm_addr[17], | |
2203 | ioc_data->atm_addr[18], ioc_data->atm_addr[19]); | |
2204 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
d0732f64 | 2205 | hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2206 | if (memcmp |
2207 | (ioc_data->atm_addr, entry->atm_addr, | |
2208 | ATM_ESA_LEN) == 0) { | |
52240062 SH |
2209 | pr_debug("LEC_ARP: Attaching data direct\n"); |
2210 | pr_debug("Currently -> Vcc: %d, Rvcc:%d\n", | |
1fa9961d CW |
2211 | entry->vcc ? entry->vcc->vci : 0, |
2212 | entry->recv_vcc ? entry->recv_vcc-> | |
2213 | vci : 0); | |
2214 | found_entry = 1; | |
2215 | del_timer(&entry->timer); | |
2216 | entry->vcc = vcc; | |
2217 | entry->old_push = old_push; | |
2218 | if (entry->status == ESI_VC_PENDING) { | |
2219 | if (priv->maximum_unknown_frame_count | |
2220 | == 0) | |
2221 | entry->status = | |
2222 | ESI_FORWARD_DIRECT; | |
2223 | else { | |
2224 | entry->timestamp = jiffies; | |
2225 | entry->status = | |
2226 | ESI_FLUSH_PENDING; | |
1da177e4 | 2227 | #if 0 |
1fa9961d CW |
2228 | send_to_lecd(priv, l_flush_xmt, |
2229 | NULL, | |
2230 | entry->atm_addr, | |
2231 | NULL); | |
1da177e4 | 2232 | #endif |
1fa9961d CW |
2233 | } |
2234 | } else { | |
2235 | /* | |
2236 | * They were forming a connection | |
2237 | * to us, and we to them. Our | |
2238 | * ATM address is numerically lower | |
2239 | * than theirs, so we make connection | |
2240 | * we formed into default VCC (8.1.11). | |
2241 | * Connection they made gets torn | |
2242 | * down. This might confuse some | |
2243 | * clients. Can be changed if | |
2244 | * someone reports trouble... | |
2245 | */ | |
2246 | ; | |
2247 | } | |
2248 | } | |
2249 | } | |
2250 | } | |
2251 | if (found_entry) { | |
52240062 | 2252 | pr_debug("After vcc was added\n"); |
1fa9961d | 2253 | dump_arp_table(priv); |
1da177e4 | 2254 | goto out; |
1fa9961d CW |
2255 | } |
2256 | /* | |
2257 | * Not found, snatch address from first data packet that arrives | |
2258 | * from this vcc | |
2259 | */ | |
2260 | entry = make_entry(priv, bus_mac); | |
2261 | if (!entry) | |
1da177e4 | 2262 | goto out; |
1fa9961d CW |
2263 | entry->vcc = vcc; |
2264 | entry->old_push = old_push; | |
2265 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); | |
2266 | memset(entry->mac_addr, 0, ETH_ALEN); | |
2267 | entry->status = ESI_UNKNOWN; | |
d0732f64 | 2268 | hlist_add_head(&entry->next, &priv->lec_arp_empty_ones); |
1fa9961d CW |
2269 | entry->timer.expires = jiffies + priv->vcc_timeout_period; |
2270 | entry->timer.function = lec_arp_expire_vcc; | |
2271 | add_timer(&entry->timer); | |
52240062 | 2272 | pr_debug("After vcc was added\n"); |
1da177e4 LT |
2273 | dump_arp_table(priv); |
2274 | out: | |
2275 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2276 | } | |
2277 | ||
1fa9961d | 2278 | static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id) |
1da177e4 LT |
2279 | { |
2280 | unsigned long flags; | |
d0732f64 | 2281 | struct hlist_node *node; |
1fa9961d CW |
2282 | struct lec_arp_table *entry; |
2283 | int i; | |
1da177e4 | 2284 | |
52240062 | 2285 | pr_debug("LEC:lec_flush_complete %lx\n", tran_id); |
6656e3c4 | 2286 | restart: |
1fa9961d CW |
2287 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
2288 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
d0732f64 | 2289 | hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2290 | if (entry->flush_tran_id == tran_id |
2291 | && entry->status == ESI_FLUSH_PENDING) { | |
2292 | struct sk_buff *skb; | |
6656e3c4 | 2293 | struct atm_vcc *vcc = entry->vcc; |
1fa9961d | 2294 | |
6656e3c4 CW |
2295 | lec_arp_hold(entry); |
2296 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2297 | while ((skb = skb_dequeue(&entry->tx_wait)) != NULL) | |
162619e5 | 2298 | lec_send(vcc, skb); |
6656e3c4 | 2299 | entry->last_used = jiffies; |
1fa9961d | 2300 | entry->status = ESI_FORWARD_DIRECT; |
6656e3c4 | 2301 | lec_arp_put(entry); |
52240062 | 2302 | pr_debug("LEC_ARP: Flushed\n"); |
6656e3c4 | 2303 | goto restart; |
1fa9961d CW |
2304 | } |
2305 | } | |
2306 | } | |
1da177e4 | 2307 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d | 2308 | dump_arp_table(priv); |
1da177e4 LT |
2309 | } |
2310 | ||
2311 | static void | |
2312 | lec_set_flush_tran_id(struct lec_priv *priv, | |
61c33e01 | 2313 | const unsigned char *atm_addr, unsigned long tran_id) |
1da177e4 LT |
2314 | { |
2315 | unsigned long flags; | |
d0732f64 | 2316 | struct hlist_node *node; |
1fa9961d CW |
2317 | struct lec_arp_table *entry; |
2318 | int i; | |
1da177e4 LT |
2319 | |
2320 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d | 2321 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) |
d0732f64 | 2322 | hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2323 | if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) { |
2324 | entry->flush_tran_id = tran_id; | |
52240062 | 2325 | pr_debug("Set flush transaction id to %lx for %p\n", |
f7d57453 | 2326 | tran_id, entry); |
1fa9961d | 2327 | } |
d0732f64 | 2328 | } |
1da177e4 LT |
2329 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
2330 | } | |
2331 | ||
1fa9961d | 2332 | static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc) |
1da177e4 LT |
2333 | { |
2334 | unsigned long flags; | |
1fa9961d CW |
2335 | unsigned char mac_addr[] = { |
2336 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff | |
2337 | }; | |
2338 | struct lec_arp_table *to_add; | |
1da177e4 LT |
2339 | struct lec_vcc_priv *vpriv; |
2340 | int err = 0; | |
1fa9961d | 2341 | |
1da177e4 LT |
2342 | if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL))) |
2343 | return -ENOMEM; | |
2344 | vpriv->xoff = 0; | |
2345 | vpriv->old_pop = vcc->pop; | |
2346 | vcc->user_back = vpriv; | |
1fa9961d | 2347 | vcc->pop = lec_pop; |
1da177e4 | 2348 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d CW |
2349 | to_add = make_entry(priv, mac_addr); |
2350 | if (!to_add) { | |
1da177e4 LT |
2351 | vcc->pop = vpriv->old_pop; |
2352 | kfree(vpriv); | |
1fa9961d | 2353 | err = -ENOMEM; |
1da177e4 | 2354 | goto out; |
1fa9961d CW |
2355 | } |
2356 | memcpy(to_add->atm_addr, vcc->remote.sas_addr.prv, ATM_ESA_LEN); | |
2357 | to_add->status = ESI_FORWARD_DIRECT; | |
2358 | to_add->flags |= LEC_PERMANENT_FLAG; | |
2359 | to_add->vcc = vcc; | |
2360 | to_add->old_push = vcc->push; | |
2361 | vcc->push = lec_push; | |
2362 | priv->mcast_vcc = vcc; | |
2363 | lec_arp_add(priv, to_add); | |
1da177e4 LT |
2364 | out: |
2365 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1fa9961d | 2366 | return err; |
1da177e4 LT |
2367 | } |
2368 | ||
1fa9961d | 2369 | static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc) |
1da177e4 LT |
2370 | { |
2371 | unsigned long flags; | |
d0732f64 CW |
2372 | struct hlist_node *node, *next; |
2373 | struct lec_arp_table *entry; | |
1fa9961d | 2374 | int i; |
1da177e4 | 2375 | |
52240062 | 2376 | pr_debug("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n", vcc->vpi, vcc->vci); |
1fa9961d | 2377 | dump_arp_table(priv); |
d0732f64 | 2378 | |
1da177e4 | 2379 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d0732f64 | 2380 | |
1fa9961d | 2381 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 2382 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2383 | if (vcc == entry->vcc) { |
2384 | lec_arp_remove(priv, entry); | |
33a9c2d4 | 2385 | lec_arp_put(entry); |
1fa9961d CW |
2386 | if (priv->mcast_vcc == vcc) { |
2387 | priv->mcast_vcc = NULL; | |
2388 | } | |
2389 | } | |
2390 | } | |
2391 | } | |
2392 | ||
d0732f64 CW |
2393 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) { |
2394 | if (entry->vcc == vcc) { | |
1fa9961d CW |
2395 | lec_arp_clear_vccs(entry); |
2396 | del_timer(&entry->timer); | |
d0732f64 | 2397 | hlist_del(&entry->next); |
33a9c2d4 | 2398 | lec_arp_put(entry); |
1fa9961d | 2399 | } |
1fa9961d CW |
2400 | } |
2401 | ||
d0732f64 | 2402 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_no_forward, next) { |
1fa9961d CW |
2403 | if (entry->recv_vcc == vcc) { |
2404 | lec_arp_clear_vccs(entry); | |
2405 | del_timer(&entry->timer); | |
d0732f64 | 2406 | hlist_del(&entry->next); |
33a9c2d4 | 2407 | lec_arp_put(entry); |
1fa9961d | 2408 | } |
1fa9961d CW |
2409 | } |
2410 | ||
d0732f64 | 2411 | hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) { |
1fa9961d CW |
2412 | if (entry->recv_vcc == vcc) { |
2413 | lec_arp_clear_vccs(entry); | |
2414 | /* No timer, LANEv2 7.1.20 and 2.3.5.3 */ | |
d0732f64 | 2415 | hlist_del(&entry->next); |
33a9c2d4 | 2416 | lec_arp_put(entry); |
1fa9961d | 2417 | } |
1fa9961d | 2418 | } |
1da177e4 LT |
2419 | |
2420 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2421 | dump_arp_table(priv); | |
2422 | } | |
2423 | ||
2424 | static void | |
2425 | lec_arp_check_empties(struct lec_priv *priv, | |
1fa9961d | 2426 | struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 | 2427 | { |
1fa9961d | 2428 | unsigned long flags; |
d0732f64 CW |
2429 | struct hlist_node *node, *next; |
2430 | struct lec_arp_table *entry, *tmp; | |
1fa9961d CW |
2431 | struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data; |
2432 | unsigned char *src; | |
1da177e4 | 2433 | #ifdef CONFIG_TR |
1fa9961d | 2434 | struct lecdatahdr_8025 *tr_hdr = (struct lecdatahdr_8025 *)skb->data; |
1da177e4 | 2435 | |
1fa9961d CW |
2436 | if (priv->is_trdev) |
2437 | src = tr_hdr->h_source; | |
2438 | else | |
1da177e4 | 2439 | #endif |
1fa9961d | 2440 | src = hdr->h_source; |
1da177e4 LT |
2441 | |
2442 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
d0732f64 CW |
2443 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) { |
2444 | if (vcc == entry->vcc) { | |
2445 | del_timer(&entry->timer); | |
2446 | memcpy(entry->mac_addr, src, ETH_ALEN); | |
2447 | entry->status = ESI_FORWARD_DIRECT; | |
2448 | entry->last_used = jiffies; | |
2449 | /* We might have got an entry */ | |
2450 | if ((tmp = lec_arp_find(priv, src))) { | |
2451 | lec_arp_remove(priv, tmp); | |
33a9c2d4 | 2452 | lec_arp_put(tmp); |
d0732f64 CW |
2453 | } |
2454 | hlist_del(&entry->next); | |
2455 | lec_arp_add(priv, entry); | |
2456 | goto out; | |
1fa9961d | 2457 | } |
1fa9961d | 2458 | } |
52240062 | 2459 | pr_debug("LEC_ARP: Arp_check_empties: entry not found!\n"); |
1da177e4 LT |
2460 | out: |
2461 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2462 | } | |
1fa9961d | 2463 | |
1da177e4 | 2464 | MODULE_LICENSE("GPL"); |