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) | |
1da177e4 LT |
37 | #include "../bridge/br_private.h" |
38 | ||
d44f7746 | 39 | static unsigned char bridge_ula_lec[] = { 0x01, 0x80, 0xc2, 0x00, 0x00 }; |
1da177e4 LT |
40 | #endif |
41 | ||
42 | /* Modular too */ | |
43 | #include <linux/module.h> | |
44 | #include <linux/init.h> | |
45 | ||
46 | #include "lec.h" | |
47 | #include "lec_arpc.h" | |
48 | #include "resources.h" | |
49 | ||
d44f7746 CW |
50 | #define DUMP_PACKETS 0 /* |
51 | * 0 = None, | |
52 | * 1 = 30 first bytes | |
53 | * 2 = Whole packet | |
54 | */ | |
1da177e4 | 55 | |
d44f7746 CW |
56 | #define LEC_UNRES_QUE_LEN 8 /* |
57 | * number of tx packets to queue for a | |
58 | * single destination while waiting for SVC | |
59 | */ | |
1da177e4 LT |
60 | |
61 | static int lec_open(struct net_device *dev); | |
62 | static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
63 | static int lec_close(struct net_device *dev); | |
1da177e4 | 64 | static void lec_init(struct net_device *dev); |
d44f7746 | 65 | static struct lec_arp_table *lec_arp_find(struct lec_priv *priv, |
61c33e01 | 66 | const unsigned char *mac_addr); |
1da177e4 | 67 | static int lec_arp_remove(struct lec_priv *priv, |
d44f7746 | 68 | struct lec_arp_table *to_remove); |
1da177e4 | 69 | /* LANE2 functions */ |
61c33e01 MBJ |
70 | static void lane2_associate_ind(struct net_device *dev, const u8 *mac_address, |
71 | const u8 *tlvs, u32 sizeoftlvs); | |
72 | static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force, | |
d44f7746 | 73 | u8 **tlvs, u32 *sizeoftlvs); |
61c33e01 MBJ |
74 | static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst, |
75 | const u8 *tlvs, u32 sizeoftlvs); | |
1da177e4 | 76 | |
61c33e01 | 77 | static int lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr, |
1da177e4 LT |
78 | unsigned long permanent); |
79 | static void lec_arp_check_empties(struct lec_priv *priv, | |
80 | struct atm_vcc *vcc, struct sk_buff *skb); | |
81 | static void lec_arp_destroy(struct lec_priv *priv); | |
82 | static void lec_arp_init(struct lec_priv *priv); | |
d44f7746 | 83 | static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv, |
61c33e01 | 84 | const unsigned char *mac_to_find, |
1da177e4 LT |
85 | int is_rdesc, |
86 | struct lec_arp_table **ret_entry); | |
61c33e01 MBJ |
87 | static void lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr, |
88 | const unsigned char *atm_addr, unsigned long remoteflag, | |
1da177e4 LT |
89 | unsigned int targetless_le_arp); |
90 | static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id); | |
91 | static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc); | |
92 | static void lec_set_flush_tran_id(struct lec_priv *priv, | |
61c33e01 | 93 | const unsigned char *atm_addr, |
1da177e4 | 94 | unsigned long tran_id); |
61c33e01 | 95 | static void lec_vcc_added(struct lec_priv *priv, const struct atmlec_ioc *ioc_data, |
1da177e4 | 96 | struct atm_vcc *vcc, |
d44f7746 CW |
97 | void (*old_push) (struct atm_vcc *vcc, |
98 | struct sk_buff *skb)); | |
1da177e4 LT |
99 | static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc); |
100 | ||
33a9c2d4 CW |
101 | /* must be done under lec_arp_lock */ |
102 | static inline void lec_arp_hold(struct lec_arp_table *entry) | |
103 | { | |
104 | atomic_inc(&entry->usage); | |
105 | } | |
106 | ||
107 | static inline void lec_arp_put(struct lec_arp_table *entry) | |
108 | { | |
109 | if (atomic_dec_and_test(&entry->usage)) | |
110 | kfree(entry); | |
111 | } | |
112 | ||
113 | ||
1da177e4 | 114 | static struct lane2_ops lane2_ops = { |
d44f7746 CW |
115 | lane2_resolve, /* resolve, spec 3.1.3 */ |
116 | lane2_associate_req, /* associate_req, spec 3.1.4 */ | |
117 | NULL /* associate indicator, spec 3.1.5 */ | |
1da177e4 LT |
118 | }; |
119 | ||
d44f7746 | 120 | static unsigned char bus_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
1da177e4 LT |
121 | |
122 | /* Device structures */ | |
123 | static struct net_device *dev_lec[MAX_LEC_ITF]; | |
124 | ||
125 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) | |
126 | static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev) | |
127 | { | |
d44f7746 CW |
128 | struct ethhdr *eth; |
129 | char *buff; | |
130 | struct lec_priv *priv; | |
131 | ||
132 | /* | |
133 | * Check if this is a BPDU. If so, ask zeppelin to send | |
134 | * LE_TOPOLOGY_REQUEST with the same value of Topology Change bit | |
135 | * as the Config BPDU has | |
136 | */ | |
137 | eth = (struct ethhdr *)skb->data; | |
138 | buff = skb->data + skb->dev->hard_header_len; | |
139 | if (*buff++ == 0x42 && *buff++ == 0x42 && *buff++ == 0x03) { | |
1da177e4 | 140 | struct sock *sk; |
d44f7746 CW |
141 | struct sk_buff *skb2; |
142 | struct atmlec_msg *mesg; | |
143 | ||
144 | skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); | |
145 | if (skb2 == NULL) | |
146 | return; | |
147 | skb2->len = sizeof(struct atmlec_msg); | |
148 | mesg = (struct atmlec_msg *)skb2->data; | |
149 | mesg->type = l_topology_change; | |
150 | buff += 4; | |
151 | mesg->content.normal.flag = *buff & 0x01; /* 0x01 is topology change */ | |
152 | ||
524ad0a7 | 153 | priv = netdev_priv(dev); |
d44f7746 | 154 | atm_force_charge(priv->lecd, skb2->truesize); |
1da177e4 | 155 | sk = sk_atm(priv->lecd); |
d44f7746 CW |
156 | skb_queue_tail(&sk->sk_receive_queue, skb2); |
157 | sk->sk_data_ready(sk, skb2->len); | |
158 | } | |
1da177e4 | 159 | |
d44f7746 | 160 | return; |
1da177e4 LT |
161 | } |
162 | #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */ | |
163 | ||
164 | /* | |
165 | * Modelled after tr_type_trans | |
166 | * All multicast and ARE or STE frames go to BUS. | |
167 | * Non source routed frames go by destination address. | |
168 | * Last hop source routed frames go by destination address. | |
169 | * Not last hop source routed frames go by _next_ route descriptor. | |
170 | * Returns pointer to destination MAC address or fills in rdesc | |
171 | * and returns NULL. | |
172 | */ | |
173 | #ifdef CONFIG_TR | |
174 | static unsigned char *get_tr_dst(unsigned char *packet, unsigned char *rdesc) | |
175 | { | |
d44f7746 | 176 | struct trh_hdr *trh; |
5c17d5f1 | 177 | unsigned int riflen, num_rdsc; |
d44f7746 CW |
178 | |
179 | trh = (struct trh_hdr *)packet; | |
180 | if (trh->daddr[0] & (uint8_t) 0x80) | |
181 | return bus_mac; /* multicast */ | |
182 | ||
183 | if (trh->saddr[0] & TR_RII) { | |
184 | riflen = (ntohs(trh->rcf) & TR_RCF_LEN_MASK) >> 8; | |
185 | if ((ntohs(trh->rcf) >> 13) != 0) | |
186 | return bus_mac; /* ARE or STE */ | |
187 | } else | |
188 | return trh->daddr; /* not source routed */ | |
189 | ||
190 | if (riflen < 6) | |
191 | return trh->daddr; /* last hop, source routed */ | |
192 | ||
193 | /* riflen is 6 or more, packet has more than one route descriptor */ | |
194 | num_rdsc = (riflen / 2) - 1; | |
195 | memset(rdesc, 0, ETH_ALEN); | |
196 | /* offset 4 comes from LAN destination field in LE control frames */ | |
197 | if (trh->rcf & htons((uint16_t) TR_RCF_DIR_BIT)) | |
30d492da | 198 | memcpy(&rdesc[4], &trh->rseg[num_rdsc - 2], sizeof(__be16)); |
d44f7746 | 199 | else { |
30d492da | 200 | memcpy(&rdesc[4], &trh->rseg[1], sizeof(__be16)); |
d44f7746 CW |
201 | rdesc[5] = ((ntohs(trh->rseg[0]) & 0x000f) | (rdesc[5] & 0xf0)); |
202 | } | |
203 | ||
204 | return NULL; | |
1da177e4 LT |
205 | } |
206 | #endif /* CONFIG_TR */ | |
207 | ||
208 | /* | |
209 | * Open/initialize the netdevice. This is called (in the current kernel) | |
210 | * sometime after booting when the 'ifconfig' program is run. | |
211 | * | |
212 | * This routine should set everything up anew at each open, even | |
213 | * registers that "should" only need to be set once at boot, so that | |
214 | * there is non-reboot way to recover if something goes wrong. | |
215 | */ | |
216 | ||
d44f7746 | 217 | static int lec_open(struct net_device *dev) |
1da177e4 | 218 | { |
1da177e4 | 219 | netif_start_queue(dev); |
162619e5 | 220 | memset(&dev->stats, 0, sizeof(struct net_device_stats)); |
d44f7746 CW |
221 | |
222 | return 0; | |
1da177e4 LT |
223 | } |
224 | ||
162619e5 SH |
225 | static void |
226 | lec_send(struct atm_vcc *vcc, struct sk_buff *skb) | |
1da177e4 | 227 | { |
162619e5 SH |
228 | struct net_device *dev = skb->dev; |
229 | ||
1da177e4 LT |
230 | ATM_SKB(skb)->vcc = vcc; |
231 | ATM_SKB(skb)->atm_options = vcc->atm_options; | |
232 | ||
233 | atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); | |
234 | if (vcc->send(vcc, skb) < 0) { | |
162619e5 | 235 | dev->stats.tx_dropped++; |
1da177e4 LT |
236 | return; |
237 | } | |
238 | ||
162619e5 SH |
239 | dev->stats.tx_packets++; |
240 | dev->stats.tx_bytes += skb->len; | |
1da177e4 LT |
241 | } |
242 | ||
d44f7746 | 243 | static void lec_tx_timeout(struct net_device *dev) |
1da177e4 LT |
244 | { |
245 | printk(KERN_INFO "%s: tx timeout\n", dev->name); | |
246 | dev->trans_start = jiffies; | |
247 | netif_wake_queue(dev); | |
248 | } | |
249 | ||
d44f7746 | 250 | static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 | 251 | { |
d44f7746 | 252 | struct sk_buff *skb2; |
524ad0a7 | 253 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
254 | struct lecdatahdr_8023 *lec_h; |
255 | struct atm_vcc *vcc; | |
1da177e4 | 256 | struct lec_arp_table *entry; |
d44f7746 | 257 | unsigned char *dst; |
1da177e4 LT |
258 | int min_frame_size; |
259 | #ifdef CONFIG_TR | |
d44f7746 | 260 | unsigned char rdesc[ETH_ALEN]; /* Token Ring route descriptor */ |
1da177e4 | 261 | #endif |
d44f7746 | 262 | int is_rdesc; |
1da177e4 | 263 | #if DUMP_PACKETS > 0 |
d44f7746 CW |
264 | char buf[300]; |
265 | int i = 0; | |
1da177e4 | 266 | #endif /* DUMP_PACKETS >0 */ |
d44f7746 | 267 | |
52240062 | 268 | pr_debug("lec_start_xmit called\n"); |
d44f7746 CW |
269 | if (!priv->lecd) { |
270 | printk("%s:No lecd attached\n", dev->name); | |
162619e5 | 271 | dev->stats.tx_errors++; |
d44f7746 CW |
272 | netif_stop_queue(dev); |
273 | return -EUNATCH; | |
274 | } | |
275 | ||
52240062 | 276 | pr_debug("skbuff head:%lx data:%lx tail:%lx end:%lx\n", |
27a884dc | 277 | (long)skb->head, (long)skb->data, (long)skb_tail_pointer(skb), |
4305b541 | 278 | (long)skb_end_pointer(skb)); |
1da177e4 | 279 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) |
d44f7746 CW |
280 | if (memcmp(skb->data, bridge_ula_lec, sizeof(bridge_ula_lec)) == 0) |
281 | lec_handle_bridge(skb, dev); | |
1da177e4 LT |
282 | #endif |
283 | ||
d44f7746 CW |
284 | /* Make sure we have room for lec_id */ |
285 | if (skb_headroom(skb) < 2) { | |
1da177e4 | 286 | |
52240062 | 287 | pr_debug("lec_start_xmit: reallocating skb\n"); |
d44f7746 CW |
288 | skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN); |
289 | kfree_skb(skb); | |
290 | if (skb2 == NULL) | |
291 | return 0; | |
292 | skb = skb2; | |
293 | } | |
294 | skb_push(skb, 2); | |
1da177e4 | 295 | |
d44f7746 CW |
296 | /* Put le header to place, works for TokenRing too */ |
297 | lec_h = (struct lecdatahdr_8023 *)skb->data; | |
298 | lec_h->le_header = htons(priv->lecid); | |
1da177e4 LT |
299 | |
300 | #ifdef CONFIG_TR | |
d44f7746 CW |
301 | /* |
302 | * Ugly. Use this to realign Token Ring packets for | |
303 | * e.g. PCA-200E driver. | |
304 | */ | |
305 | if (priv->is_trdev) { | |
306 | skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN); | |
307 | kfree_skb(skb); | |
308 | if (skb2 == NULL) | |
309 | return 0; | |
310 | skb = skb2; | |
311 | } | |
1da177e4 LT |
312 | #endif |
313 | ||
314 | #if DUMP_PACKETS > 0 | |
d44f7746 CW |
315 | printk("%s: send datalen:%ld lecid:%4.4x\n", dev->name, |
316 | skb->len, priv->lecid); | |
1da177e4 | 317 | #if DUMP_PACKETS >= 2 |
d44f7746 CW |
318 | for (i = 0; i < skb->len && i < 99; i++) { |
319 | sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]); | |
320 | } | |
1da177e4 | 321 | #elif DUMP_PACKETS >= 1 |
d44f7746 CW |
322 | for (i = 0; i < skb->len && i < 30; i++) { |
323 | sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]); | |
324 | } | |
1da177e4 | 325 | #endif /* DUMP_PACKETS >= 1 */ |
d44f7746 CW |
326 | if (i == skb->len) |
327 | printk("%s\n", buf); | |
328 | else | |
329 | printk("%s...\n", buf); | |
1da177e4 LT |
330 | #endif /* DUMP_PACKETS > 0 */ |
331 | ||
d44f7746 | 332 | /* Minimum ethernet-frame size */ |
1da177e4 | 333 | #ifdef CONFIG_TR |
d44f7746 CW |
334 | if (priv->is_trdev) |
335 | min_frame_size = LEC_MINIMUM_8025_SIZE; | |
1da177e4 LT |
336 | else |
337 | #endif | |
d44f7746 CW |
338 | min_frame_size = LEC_MINIMUM_8023_SIZE; |
339 | if (skb->len < min_frame_size) { | |
340 | if ((skb->len + skb_tailroom(skb)) < min_frame_size) { | |
341 | skb2 = skb_copy_expand(skb, 0, | |
342 | min_frame_size - skb->truesize, | |
343 | GFP_ATOMIC); | |
344 | dev_kfree_skb(skb); | |
345 | if (skb2 == NULL) { | |
162619e5 | 346 | dev->stats.tx_dropped++; |
d44f7746 CW |
347 | return 0; |
348 | } | |
349 | skb = skb2; | |
350 | } | |
1da177e4 | 351 | skb_put(skb, min_frame_size - skb->len); |
d44f7746 CW |
352 | } |
353 | ||
354 | /* Send to right vcc */ | |
355 | is_rdesc = 0; | |
356 | dst = lec_h->h_dest; | |
1da177e4 | 357 | #ifdef CONFIG_TR |
d44f7746 CW |
358 | if (priv->is_trdev) { |
359 | dst = get_tr_dst(skb->data + 2, rdesc); | |
360 | if (dst == NULL) { | |
361 | dst = rdesc; | |
362 | is_rdesc = 1; | |
363 | } | |
364 | } | |
1da177e4 | 365 | #endif |
d44f7746 CW |
366 | entry = NULL; |
367 | vcc = lec_arp_resolve(priv, dst, is_rdesc, &entry); | |
58c14a8f | 368 | pr_debug("%s:vcc:%p vcc_flags:%lx, entry:%p\n", dev->name, |
d44f7746 CW |
369 | vcc, vcc ? vcc->flags : 0, entry); |
370 | if (!vcc || !test_bit(ATM_VF_READY, &vcc->flags)) { | |
371 | if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) { | |
52240062 | 372 | pr_debug("%s:lec_start_xmit: queuing packet, ", |
d44f7746 | 373 | dev->name); |
e174961c | 374 | pr_debug("MAC address %pM\n", lec_h->h_dest); |
d44f7746 CW |
375 | skb_queue_tail(&entry->tx_wait, skb); |
376 | } else { | |
52240062 | 377 | pr_debug |
d44f7746 CW |
378 | ("%s:lec_start_xmit: tx queue full or no arp entry, dropping, ", |
379 | dev->name); | |
e174961c | 380 | pr_debug("MAC address %pM\n", lec_h->h_dest); |
162619e5 | 381 | dev->stats.tx_dropped++; |
d44f7746 CW |
382 | dev_kfree_skb(skb); |
383 | } | |
6656e3c4 | 384 | goto out; |
d44f7746 CW |
385 | } |
386 | #if DUMP_PACKETS > 0 | |
387 | printk("%s:sending to vpi:%d vci:%d\n", dev->name, vcc->vpi, vcc->vci); | |
1da177e4 | 388 | #endif /* DUMP_PACKETS > 0 */ |
d44f7746 CW |
389 | |
390 | while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) { | |
52240062 | 391 | pr_debug("lec.c: emptying tx queue, "); |
e174961c | 392 | pr_debug("MAC address %pM\n", lec_h->h_dest); |
162619e5 | 393 | lec_send(vcc, skb2); |
d44f7746 | 394 | } |
1da177e4 | 395 | |
162619e5 | 396 | lec_send(vcc, skb); |
1da177e4 LT |
397 | |
398 | if (!atm_may_send(vcc, 0)) { | |
399 | struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); | |
400 | ||
401 | vpriv->xoff = 1; | |
402 | netif_stop_queue(dev); | |
403 | ||
404 | /* | |
405 | * vcc->pop() might have occurred in between, making | |
406 | * the vcc usuable again. Since xmit is serialized, | |
407 | * this is the only situation we have to re-test. | |
408 | */ | |
409 | ||
410 | if (atm_may_send(vcc, 0)) | |
411 | netif_wake_queue(dev); | |
412 | } | |
413 | ||
6656e3c4 CW |
414 | out: |
415 | if (entry) | |
416 | lec_arp_put(entry); | |
1da177e4 | 417 | dev->trans_start = jiffies; |
d44f7746 | 418 | return 0; |
1da177e4 LT |
419 | } |
420 | ||
421 | /* The inverse routine to net_open(). */ | |
d44f7746 | 422 | static int lec_close(struct net_device *dev) |
1da177e4 | 423 | { |
d44f7746 CW |
424 | netif_stop_queue(dev); |
425 | return 0; | |
1da177e4 LT |
426 | } |
427 | ||
d44f7746 | 428 | static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 LT |
429 | { |
430 | unsigned long flags; | |
d44f7746 | 431 | struct net_device *dev = (struct net_device *)vcc->proto_data; |
524ad0a7 | 432 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
433 | struct atmlec_msg *mesg; |
434 | struct lec_arp_table *entry; | |
435 | int i; | |
436 | char *tmp; /* FIXME */ | |
1da177e4 LT |
437 | |
438 | atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); | |
d44f7746 CW |
439 | mesg = (struct atmlec_msg *)skb->data; |
440 | tmp = skb->data; | |
441 | tmp += sizeof(struct atmlec_msg); | |
52240062 | 442 | pr_debug("%s: msg from zeppelin:%d\n", dev->name, mesg->type); |
d44f7746 CW |
443 | switch (mesg->type) { |
444 | case l_set_mac_addr: | |
445 | for (i = 0; i < 6; i++) { | |
446 | dev->dev_addr[i] = mesg->content.normal.mac_addr[i]; | |
447 | } | |
448 | break; | |
449 | case l_del_mac_addr: | |
450 | for (i = 0; i < 6; i++) { | |
451 | dev->dev_addr[i] = 0; | |
452 | } | |
453 | break; | |
454 | case l_addr_delete: | |
455 | lec_addr_delete(priv, mesg->content.normal.atm_addr, | |
456 | mesg->content.normal.flag); | |
457 | break; | |
458 | case l_topology_change: | |
459 | priv->topology_change = mesg->content.normal.flag; | |
460 | break; | |
461 | case l_flush_complete: | |
462 | lec_flush_complete(priv, mesg->content.normal.flag); | |
463 | break; | |
464 | case l_narp_req: /* LANE2: see 7.1.35 in the lane2 spec */ | |
1da177e4 | 465 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d44f7746 CW |
466 | entry = lec_arp_find(priv, mesg->content.normal.mac_addr); |
467 | lec_arp_remove(priv, entry); | |
1da177e4 LT |
468 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
469 | ||
d44f7746 CW |
470 | if (mesg->content.normal.no_source_le_narp) |
471 | break; | |
472 | /* FALL THROUGH */ | |
473 | case l_arp_update: | |
474 | lec_arp_update(priv, mesg->content.normal.mac_addr, | |
475 | mesg->content.normal.atm_addr, | |
476 | mesg->content.normal.flag, | |
477 | mesg->content.normal.targetless_le_arp); | |
52240062 | 478 | pr_debug("lec: in l_arp_update\n"); |
d44f7746 | 479 | if (mesg->sizeoftlvs != 0) { /* LANE2 3.1.5 */ |
52240062 | 480 | pr_debug("lec: LANE2 3.1.5, got tlvs, size %d\n", |
d44f7746 CW |
481 | mesg->sizeoftlvs); |
482 | lane2_associate_ind(dev, mesg->content.normal.mac_addr, | |
483 | tmp, mesg->sizeoftlvs); | |
484 | } | |
485 | break; | |
486 | case l_config: | |
487 | priv->maximum_unknown_frame_count = | |
488 | mesg->content.config.maximum_unknown_frame_count; | |
489 | priv->max_unknown_frame_time = | |
490 | (mesg->content.config.max_unknown_frame_time * HZ); | |
491 | priv->max_retry_count = mesg->content.config.max_retry_count; | |
492 | priv->aging_time = (mesg->content.config.aging_time * HZ); | |
493 | priv->forward_delay_time = | |
494 | (mesg->content.config.forward_delay_time * HZ); | |
495 | priv->arp_response_time = | |
496 | (mesg->content.config.arp_response_time * HZ); | |
497 | priv->flush_timeout = (mesg->content.config.flush_timeout * HZ); | |
498 | priv->path_switching_delay = | |
499 | (mesg->content.config.path_switching_delay * HZ); | |
500 | priv->lane_version = mesg->content.config.lane_version; /* LANE2 */ | |
1da177e4 LT |
501 | priv->lane2_ops = NULL; |
502 | if (priv->lane_version > 1) | |
503 | priv->lane2_ops = &lane2_ops; | |
1f1900f9 | 504 | if (dev_set_mtu(dev, mesg->content.config.mtu)) |
1da177e4 | 505 | printk("%s: change_mtu to %d failed\n", dev->name, |
d44f7746 | 506 | mesg->content.config.mtu); |
1da177e4 | 507 | priv->is_proxy = mesg->content.config.is_proxy; |
d44f7746 CW |
508 | break; |
509 | case l_flush_tran_id: | |
510 | lec_set_flush_tran_id(priv, mesg->content.normal.atm_addr, | |
511 | mesg->content.normal.flag); | |
512 | break; | |
513 | case l_set_lecid: | |
514 | priv->lecid = | |
515 | (unsigned short)(0xffff & mesg->content.normal.flag); | |
516 | break; | |
517 | case l_should_bridge: | |
1da177e4 | 518 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) |
d44f7746 | 519 | { |
e174961c JB |
520 | pr_debug("%s: bridge zeppelin asks about %pM\n", |
521 | dev->name, mesg->content.proxy.mac_addr); | |
d44f7746 | 522 | |
da678292 | 523 | if (br_fdb_test_addr_hook == NULL) |
d44f7746 CW |
524 | break; |
525 | ||
da678292 MM |
526 | if (br_fdb_test_addr_hook(dev, |
527 | mesg->content.proxy.mac_addr)) { | |
d44f7746 CW |
528 | /* hit from bridge table, send LE_ARP_RESPONSE */ |
529 | struct sk_buff *skb2; | |
530 | struct sock *sk; | |
531 | ||
52240062 | 532 | pr_debug |
d44f7746 CW |
533 | ("%s: entry found, responding to zeppelin\n", |
534 | dev->name); | |
535 | skb2 = | |
536 | alloc_skb(sizeof(struct atmlec_msg), | |
537 | GFP_ATOMIC); | |
da678292 | 538 | if (skb2 == NULL) |
d44f7746 | 539 | break; |
d44f7746 | 540 | skb2->len = sizeof(struct atmlec_msg); |
27d7ff46 ACM |
541 | skb_copy_to_linear_data(skb2, mesg, |
542 | sizeof(*mesg)); | |
d44f7746 CW |
543 | atm_force_charge(priv->lecd, skb2->truesize); |
544 | sk = sk_atm(priv->lecd); | |
545 | skb_queue_tail(&sk->sk_receive_queue, skb2); | |
546 | sk->sk_data_ready(sk, skb2->len); | |
547 | } | |
d44f7746 | 548 | } |
1da177e4 | 549 | #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */ |
d44f7746 CW |
550 | break; |
551 | default: | |
552 | printk("%s: Unknown message type %d\n", dev->name, mesg->type); | |
553 | dev_kfree_skb(skb); | |
554 | return -EINVAL; | |
555 | } | |
556 | dev_kfree_skb(skb); | |
557 | return 0; | |
1da177e4 LT |
558 | } |
559 | ||
d44f7746 | 560 | static void lec_atm_close(struct atm_vcc *vcc) |
1da177e4 | 561 | { |
d44f7746 CW |
562 | struct sk_buff *skb; |
563 | struct net_device *dev = (struct net_device *)vcc->proto_data; | |
524ad0a7 | 564 | struct lec_priv *priv = netdev_priv(dev); |
1da177e4 | 565 | |
d44f7746 CW |
566 | priv->lecd = NULL; |
567 | /* Do something needful? */ | |
1da177e4 | 568 | |
d44f7746 CW |
569 | netif_stop_queue(dev); |
570 | lec_arp_destroy(priv); | |
1da177e4 | 571 | |
d44f7746 | 572 | if (skb_peek(&sk_atm(vcc)->sk_receive_queue)) |
1da177e4 | 573 | printk("%s lec_atm_close: closing with messages pending\n", |
d44f7746 CW |
574 | dev->name); |
575 | while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue)) != NULL) { | |
576 | atm_return(vcc, skb->truesize); | |
1da177e4 | 577 | dev_kfree_skb(skb); |
d44f7746 CW |
578 | } |
579 | ||
1da177e4 | 580 | printk("%s: Shut down!\n", dev->name); |
d44f7746 | 581 | module_put(THIS_MODULE); |
1da177e4 LT |
582 | } |
583 | ||
584 | static struct atmdev_ops lecdev_ops = { | |
d44f7746 CW |
585 | .close = lec_atm_close, |
586 | .send = lec_atm_send | |
1da177e4 LT |
587 | }; |
588 | ||
589 | static struct atm_dev lecatm_dev = { | |
d44f7746 CW |
590 | .ops = &lecdev_ops, |
591 | .type = "lec", | |
592 | .number = 999, /* dummy device number */ | |
4ef8d0ae | 593 | .lock = __SPIN_LOCK_UNLOCKED(lecatm_dev.lock) |
1da177e4 LT |
594 | }; |
595 | ||
596 | /* | |
597 | * LANE2: new argument struct sk_buff *data contains | |
598 | * the LE_ARP based TLVs introduced in the LANE2 spec | |
599 | */ | |
d44f7746 CW |
600 | static int |
601 | send_to_lecd(struct lec_priv *priv, atmlec_msg_type type, | |
61c33e01 | 602 | const unsigned char *mac_addr, const unsigned char *atm_addr, |
d44f7746 | 603 | struct sk_buff *data) |
1da177e4 LT |
604 | { |
605 | struct sock *sk; | |
606 | struct sk_buff *skb; | |
607 | struct atmlec_msg *mesg; | |
608 | ||
609 | if (!priv || !priv->lecd) { | |
610 | return -1; | |
611 | } | |
612 | skb = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); | |
613 | if (!skb) | |
614 | return -1; | |
615 | skb->len = sizeof(struct atmlec_msg); | |
616 | mesg = (struct atmlec_msg *)skb->data; | |
d44f7746 | 617 | memset(mesg, 0, sizeof(struct atmlec_msg)); |
1da177e4 | 618 | mesg->type = type; |
d44f7746 CW |
619 | if (data != NULL) |
620 | mesg->sizeoftlvs = data->len; | |
1da177e4 LT |
621 | if (mac_addr) |
622 | memcpy(&mesg->content.normal.mac_addr, mac_addr, ETH_ALEN); | |
d44f7746 CW |
623 | else |
624 | mesg->content.normal.targetless_le_arp = 1; | |
1da177e4 LT |
625 | if (atm_addr) |
626 | memcpy(&mesg->content.normal.atm_addr, atm_addr, ATM_ESA_LEN); | |
627 | ||
d44f7746 | 628 | atm_force_charge(priv->lecd, skb->truesize); |
1da177e4 LT |
629 | sk = sk_atm(priv->lecd); |
630 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
d44f7746 | 631 | sk->sk_data_ready(sk, skb->len); |
1da177e4 | 632 | |
d44f7746 | 633 | if (data != NULL) { |
52240062 | 634 | pr_debug("lec: about to send %d bytes of data\n", data->len); |
d44f7746 CW |
635 | atm_force_charge(priv->lecd, data->truesize); |
636 | skb_queue_tail(&sk->sk_receive_queue, data); | |
637 | sk->sk_data_ready(sk, skb->len); | |
638 | } | |
1da177e4 | 639 | |
d44f7746 | 640 | return 0; |
1da177e4 LT |
641 | } |
642 | ||
643 | /* shamelessly stolen from drivers/net/net_init.c */ | |
644 | static int lec_change_mtu(struct net_device *dev, int new_mtu) | |
645 | { | |
d44f7746 CW |
646 | if ((new_mtu < 68) || (new_mtu > 18190)) |
647 | return -EINVAL; | |
648 | dev->mtu = new_mtu; | |
649 | return 0; | |
1da177e4 LT |
650 | } |
651 | ||
652 | static void lec_set_multicast_list(struct net_device *dev) | |
653 | { | |
d44f7746 CW |
654 | /* |
655 | * by default, all multicast frames arrive over the bus. | |
656 | * eventually support selective multicast service | |
657 | */ | |
658 | return; | |
1da177e4 LT |
659 | } |
660 | ||
004b3225 SH |
661 | static const struct net_device_ops lec_netdev_ops = { |
662 | .ndo_open = lec_open, | |
663 | .ndo_stop = lec_close, | |
664 | .ndo_start_xmit = lec_start_xmit, | |
665 | .ndo_change_mtu = lec_change_mtu, | |
666 | .ndo_tx_timeout = lec_tx_timeout, | |
667 | .ndo_set_multicast_list = lec_set_multicast_list, | |
668 | }; | |
669 | ||
670 | ||
d44f7746 | 671 | static void lec_init(struct net_device *dev) |
1da177e4 | 672 | { |
004b3225 | 673 | dev->netdev_ops = &lec_netdev_ops; |
d44f7746 | 674 | printk("%s: Initialized!\n", dev->name); |
1da177e4 LT |
675 | } |
676 | ||
61c33e01 | 677 | static const unsigned char lec_ctrl_magic[] = { |
d44f7746 CW |
678 | 0xff, |
679 | 0x00, | |
680 | 0x01, | |
681 | 0x01 | |
682 | }; | |
1da177e4 | 683 | |
4a7097fc ST |
684 | #define LEC_DATA_DIRECT_8023 2 |
685 | #define LEC_DATA_DIRECT_8025 3 | |
686 | ||
687 | static int lec_is_data_direct(struct atm_vcc *vcc) | |
d44f7746 | 688 | { |
4a7097fc ST |
689 | return ((vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8023) || |
690 | (vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8025)); | |
d44f7746 | 691 | } |
4a7097fc | 692 | |
d44f7746 | 693 | static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 | 694 | { |
4a7097fc | 695 | unsigned long flags; |
d44f7746 | 696 | struct net_device *dev = (struct net_device *)vcc->proto_data; |
524ad0a7 | 697 | struct lec_priv *priv = netdev_priv(dev); |
1da177e4 LT |
698 | |
699 | #if DUMP_PACKETS >0 | |
d44f7746 CW |
700 | int i = 0; |
701 | char buf[300]; | |
1da177e4 | 702 | |
d44f7746 CW |
703 | printk("%s: lec_push vcc vpi:%d vci:%d\n", dev->name, |
704 | vcc->vpi, vcc->vci); | |
1da177e4 | 705 | #endif |
d44f7746 | 706 | if (!skb) { |
52240062 | 707 | pr_debug("%s: null skb\n", dev->name); |
d44f7746 CW |
708 | lec_vcc_close(priv, vcc); |
709 | return; | |
710 | } | |
1da177e4 | 711 | #if DUMP_PACKETS > 0 |
d44f7746 CW |
712 | printk("%s: rcv datalen:%ld lecid:%4.4x\n", dev->name, |
713 | skb->len, priv->lecid); | |
1da177e4 | 714 | #if DUMP_PACKETS >= 2 |
d44f7746 CW |
715 | for (i = 0; i < skb->len && i < 99; i++) { |
716 | sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]); | |
717 | } | |
1da177e4 | 718 | #elif DUMP_PACKETS >= 1 |
d44f7746 CW |
719 | for (i = 0; i < skb->len && i < 30; i++) { |
720 | sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]); | |
721 | } | |
1da177e4 | 722 | #endif /* DUMP_PACKETS >= 1 */ |
d44f7746 CW |
723 | if (i == skb->len) |
724 | printk("%s\n", buf); | |
725 | else | |
726 | printk("%s...\n", buf); | |
1da177e4 | 727 | #endif /* DUMP_PACKETS > 0 */ |
d44f7746 | 728 | if (memcmp(skb->data, lec_ctrl_magic, 4) == 0) { /* Control frame, to daemon */ |
1da177e4 LT |
729 | struct sock *sk = sk_atm(vcc); |
730 | ||
52240062 | 731 | pr_debug("%s: To daemon\n", dev->name); |
d44f7746 CW |
732 | skb_queue_tail(&sk->sk_receive_queue, skb); |
733 | sk->sk_data_ready(sk, skb->len); | |
734 | } else { /* Data frame, queue to protocol handlers */ | |
4a7097fc | 735 | struct lec_arp_table *entry; |
d44f7746 CW |
736 | unsigned char *src, *dst; |
737 | ||
738 | atm_return(vcc, skb->truesize); | |
30d492da | 739 | if (*(__be16 *) skb->data == htons(priv->lecid) || |
d44f7746 CW |
740 | !priv->lecd || !(dev->flags & IFF_UP)) { |
741 | /* | |
742 | * Probably looping back, or if lecd is missing, | |
743 | * lecd has gone down | |
744 | */ | |
52240062 | 745 | pr_debug("Ignoring frame...\n"); |
d44f7746 CW |
746 | dev_kfree_skb(skb); |
747 | return; | |
748 | } | |
1da177e4 | 749 | #ifdef CONFIG_TR |
d44f7746 CW |
750 | if (priv->is_trdev) |
751 | dst = ((struct lecdatahdr_8025 *)skb->data)->h_dest; | |
752 | else | |
1da177e4 | 753 | #endif |
d44f7746 | 754 | dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest; |
4a7097fc | 755 | |
d44f7746 CW |
756 | /* |
757 | * If this is a Data Direct VCC, and the VCC does not match | |
4a7097fc ST |
758 | * the LE_ARP cache entry, delete the LE_ARP cache entry. |
759 | */ | |
760 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
761 | if (lec_is_data_direct(vcc)) { | |
762 | #ifdef CONFIG_TR | |
763 | if (priv->is_trdev) | |
d44f7746 CW |
764 | src = |
765 | ((struct lecdatahdr_8025 *)skb->data)-> | |
766 | h_source; | |
4a7097fc ST |
767 | else |
768 | #endif | |
d44f7746 CW |
769 | src = |
770 | ((struct lecdatahdr_8023 *)skb->data)-> | |
771 | h_source; | |
4a7097fc ST |
772 | entry = lec_arp_find(priv, src); |
773 | if (entry && entry->vcc != vcc) { | |
774 | lec_arp_remove(priv, entry); | |
33a9c2d4 | 775 | lec_arp_put(entry); |
4a7097fc ST |
776 | } |
777 | } | |
778 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1da177e4 | 779 | |
d44f7746 CW |
780 | if (!(dst[0] & 0x01) && /* Never filter Multi/Broadcast */ |
781 | !priv->is_proxy && /* Proxy wants all the packets */ | |
1da177e4 | 782 | memcmp(dst, dev->dev_addr, dev->addr_len)) { |
d44f7746 CW |
783 | dev_kfree_skb(skb); |
784 | return; | |
785 | } | |
d0732f64 | 786 | if (!hlist_empty(&priv->lec_arp_empty_ones)) { |
d44f7746 CW |
787 | lec_arp_check_empties(priv, vcc, skb); |
788 | } | |
d44f7746 | 789 | skb_pull(skb, 2); /* skip lec_id */ |
1da177e4 | 790 | #ifdef CONFIG_TR |
d44f7746 CW |
791 | if (priv->is_trdev) |
792 | skb->protocol = tr_type_trans(skb, dev); | |
793 | else | |
1da177e4 | 794 | #endif |
d44f7746 | 795 | skb->protocol = eth_type_trans(skb, dev); |
162619e5 SH |
796 | dev->stats.rx_packets++; |
797 | dev->stats.rx_bytes += skb->len; | |
d44f7746 CW |
798 | memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data)); |
799 | netif_rx(skb); | |
800 | } | |
1da177e4 LT |
801 | } |
802 | ||
d44f7746 | 803 | static void lec_pop(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 LT |
804 | { |
805 | struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); | |
806 | struct net_device *dev = skb->dev; | |
807 | ||
808 | if (vpriv == NULL) { | |
809 | printk("lec_pop(): vpriv = NULL!?!?!?\n"); | |
810 | return; | |
811 | } | |
812 | ||
813 | vpriv->old_pop(vcc, skb); | |
814 | ||
815 | if (vpriv->xoff && atm_may_send(vcc, 0)) { | |
816 | vpriv->xoff = 0; | |
817 | if (netif_running(dev) && netif_queue_stopped(dev)) | |
818 | netif_wake_queue(dev); | |
819 | } | |
820 | } | |
821 | ||
d44f7746 | 822 | static int lec_vcc_attach(struct atm_vcc *vcc, void __user *arg) |
1da177e4 LT |
823 | { |
824 | struct lec_vcc_priv *vpriv; | |
d44f7746 CW |
825 | int bytes_left; |
826 | struct atmlec_ioc ioc_data; | |
827 | ||
828 | /* Lecd must be up in this case */ | |
829 | bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmlec_ioc)); | |
830 | if (bytes_left != 0) { | |
831 | printk | |
832 | ("lec: lec_vcc_attach, copy from user failed for %d bytes\n", | |
833 | bytes_left); | |
834 | } | |
835 | if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF || | |
836 | !dev_lec[ioc_data.dev_num]) | |
837 | return -EINVAL; | |
1da177e4 LT |
838 | if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL))) |
839 | return -ENOMEM; | |
840 | vpriv->xoff = 0; | |
841 | vpriv->old_pop = vcc->pop; | |
842 | vcc->user_back = vpriv; | |
843 | vcc->pop = lec_pop; | |
524ad0a7 | 844 | lec_vcc_added(netdev_priv(dev_lec[ioc_data.dev_num]), |
d44f7746 CW |
845 | &ioc_data, vcc, vcc->push); |
846 | vcc->proto_data = dev_lec[ioc_data.dev_num]; | |
847 | vcc->push = lec_push; | |
848 | return 0; | |
1da177e4 LT |
849 | } |
850 | ||
d44f7746 | 851 | static int lec_mcast_attach(struct atm_vcc *vcc, int arg) |
1da177e4 | 852 | { |
d44f7746 CW |
853 | if (arg < 0 || arg >= MAX_LEC_ITF || !dev_lec[arg]) |
854 | return -EINVAL; | |
855 | vcc->proto_data = dev_lec[arg]; | |
524ad0a7 WC |
856 | return lec_mcast_make((struct lec_priv *)netdev_priv(dev_lec[arg]), |
857 | vcc); | |
1da177e4 LT |
858 | } |
859 | ||
860 | /* Initialize device. */ | |
d44f7746 CW |
861 | static int lecd_attach(struct atm_vcc *vcc, int arg) |
862 | { | |
863 | int i; | |
864 | struct lec_priv *priv; | |
865 | ||
866 | if (arg < 0) | |
867 | i = 0; | |
868 | else | |
869 | i = arg; | |
1da177e4 | 870 | #ifdef CONFIG_TR |
d44f7746 CW |
871 | if (arg >= MAX_LEC_ITF) |
872 | return -EINVAL; | |
873 | #else /* Reserve the top NUM_TR_DEVS for TR */ | |
874 | if (arg >= (MAX_LEC_ITF - NUM_TR_DEVS)) | |
875 | return -EINVAL; | |
1da177e4 | 876 | #endif |
d44f7746 CW |
877 | if (!dev_lec[i]) { |
878 | int is_trdev, size; | |
1da177e4 | 879 | |
d44f7746 CW |
880 | is_trdev = 0; |
881 | if (i >= (MAX_LEC_ITF - NUM_TR_DEVS)) | |
882 | is_trdev = 1; | |
1da177e4 | 883 | |
d44f7746 | 884 | size = sizeof(struct lec_priv); |
1da177e4 | 885 | #ifdef CONFIG_TR |
d44f7746 CW |
886 | if (is_trdev) |
887 | dev_lec[i] = alloc_trdev(size); | |
888 | else | |
1da177e4 | 889 | #endif |
d44f7746 CW |
890 | dev_lec[i] = alloc_etherdev(size); |
891 | if (!dev_lec[i]) | |
892 | return -ENOMEM; | |
893 | snprintf(dev_lec[i]->name, IFNAMSIZ, "lec%d", i); | |
894 | if (register_netdev(dev_lec[i])) { | |
895 | free_netdev(dev_lec[i]); | |
896 | return -EINVAL; | |
897 | } | |
898 | ||
524ad0a7 | 899 | priv = netdev_priv(dev_lec[i]); |
d44f7746 CW |
900 | priv->is_trdev = is_trdev; |
901 | lec_init(dev_lec[i]); | |
902 | } else { | |
524ad0a7 | 903 | priv = netdev_priv(dev_lec[i]); |
d44f7746 CW |
904 | if (priv->lecd) |
905 | return -EADDRINUSE; | |
906 | } | |
907 | lec_arp_init(priv); | |
908 | priv->itfnum = i; /* LANE2 addition */ | |
909 | priv->lecd = vcc; | |
910 | vcc->dev = &lecatm_dev; | |
911 | vcc_insert_socket(sk_atm(vcc)); | |
912 | ||
913 | vcc->proto_data = dev_lec[i]; | |
914 | set_bit(ATM_VF_META, &vcc->flags); | |
915 | set_bit(ATM_VF_READY, &vcc->flags); | |
916 | ||
917 | /* Set default values to these variables */ | |
918 | priv->maximum_unknown_frame_count = 1; | |
919 | priv->max_unknown_frame_time = (1 * HZ); | |
920 | priv->vcc_timeout_period = (1200 * HZ); | |
921 | priv->max_retry_count = 1; | |
922 | priv->aging_time = (300 * HZ); | |
923 | priv->forward_delay_time = (15 * HZ); | |
924 | priv->topology_change = 0; | |
925 | priv->arp_response_time = (1 * HZ); | |
926 | priv->flush_timeout = (4 * HZ); | |
927 | priv->path_switching_delay = (6 * HZ); | |
928 | ||
929 | if (dev_lec[i]->flags & IFF_UP) { | |
930 | netif_start_queue(dev_lec[i]); | |
931 | } | |
932 | __module_get(THIS_MODULE); | |
933 | return i; | |
1da177e4 LT |
934 | } |
935 | ||
936 | #ifdef CONFIG_PROC_FS | |
d44f7746 | 937 | static char *lec_arp_get_status_string(unsigned char status) |
1da177e4 LT |
938 | { |
939 | static char *lec_arp_status_string[] = { | |
940 | "ESI_UNKNOWN ", | |
941 | "ESI_ARP_PENDING ", | |
942 | "ESI_VC_PENDING ", | |
943 | "<Undefined> ", | |
944 | "ESI_FLUSH_PENDING ", | |
945 | "ESI_FORWARD_DIRECT" | |
946 | }; | |
947 | ||
948 | if (status > ESI_FORWARD_DIRECT) | |
949 | status = 3; /* ESI_UNDEFINED */ | |
950 | return lec_arp_status_string[status]; | |
951 | } | |
952 | ||
953 | static void lec_info(struct seq_file *seq, struct lec_arp_table *entry) | |
954 | { | |
955 | int i; | |
956 | ||
957 | for (i = 0; i < ETH_ALEN; i++) | |
958 | seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff); | |
959 | seq_printf(seq, " "); | |
960 | for (i = 0; i < ATM_ESA_LEN; i++) | |
961 | seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff); | |
962 | seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status), | |
963 | entry->flags & 0xffff); | |
964 | if (entry->vcc) | |
965 | seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci); | |
966 | else | |
d44f7746 | 967 | seq_printf(seq, " "); |
1da177e4 LT |
968 | if (entry->recv_vcc) { |
969 | seq_printf(seq, " %3d %3d", entry->recv_vcc->vpi, | |
970 | entry->recv_vcc->vci); | |
d44f7746 CW |
971 | } |
972 | seq_putc(seq, '\n'); | |
1da177e4 LT |
973 | } |
974 | ||
1da177e4 LT |
975 | struct lec_state { |
976 | unsigned long flags; | |
977 | struct lec_priv *locked; | |
d0732f64 | 978 | struct hlist_node *node; |
1da177e4 LT |
979 | struct net_device *dev; |
980 | int itf; | |
981 | int arp_table; | |
982 | int misc_table; | |
983 | }; | |
984 | ||
d0732f64 | 985 | static void *lec_tbl_walk(struct lec_state *state, struct hlist_head *tbl, |
1da177e4 LT |
986 | loff_t *l) |
987 | { | |
d0732f64 CW |
988 | struct hlist_node *e = state->node; |
989 | struct lec_arp_table *tmp; | |
1da177e4 LT |
990 | |
991 | if (!e) | |
d0732f64 | 992 | e = tbl->first; |
2e1e9848 | 993 | if (e == SEQ_START_TOKEN) { |
d0732f64 | 994 | e = tbl->first; |
1da177e4 LT |
995 | --*l; |
996 | } | |
d0732f64 CW |
997 | |
998 | hlist_for_each_entry_from(tmp, e, next) { | |
1da177e4 LT |
999 | if (--*l < 0) |
1000 | break; | |
1001 | } | |
d0732f64 CW |
1002 | state->node = e; |
1003 | ||
1da177e4 LT |
1004 | return (*l < 0) ? state : NULL; |
1005 | } | |
1006 | ||
1007 | static void *lec_arp_walk(struct lec_state *state, loff_t *l, | |
d44f7746 | 1008 | struct lec_priv *priv) |
1da177e4 LT |
1009 | { |
1010 | void *v = NULL; | |
1011 | int p; | |
1012 | ||
1013 | for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) { | |
d0732f64 | 1014 | v = lec_tbl_walk(state, &priv->lec_arp_tables[p], l); |
1da177e4 LT |
1015 | if (v) |
1016 | break; | |
1017 | } | |
1018 | state->arp_table = p; | |
1019 | return v; | |
1020 | } | |
1021 | ||
1022 | static void *lec_misc_walk(struct lec_state *state, loff_t *l, | |
1023 | struct lec_priv *priv) | |
1024 | { | |
d0732f64 CW |
1025 | struct hlist_head *lec_misc_tables[] = { |
1026 | &priv->lec_arp_empty_ones, | |
1027 | &priv->lec_no_forward, | |
1028 | &priv->mcast_fwds | |
1da177e4 LT |
1029 | }; |
1030 | void *v = NULL; | |
1031 | int q; | |
1032 | ||
1033 | for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) { | |
1034 | v = lec_tbl_walk(state, lec_misc_tables[q], l); | |
1035 | if (v) | |
1036 | break; | |
1037 | } | |
1038 | state->misc_table = q; | |
1039 | return v; | |
1040 | } | |
1041 | ||
1042 | static void *lec_priv_walk(struct lec_state *state, loff_t *l, | |
1043 | struct lec_priv *priv) | |
1044 | { | |
1045 | if (!state->locked) { | |
1046 | state->locked = priv; | |
1047 | spin_lock_irqsave(&priv->lec_arp_lock, state->flags); | |
1048 | } | |
d44f7746 | 1049 | if (!lec_arp_walk(state, l, priv) && !lec_misc_walk(state, l, priv)) { |
1da177e4 LT |
1050 | spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags); |
1051 | state->locked = NULL; | |
1052 | /* Partial state reset for the next time we get called */ | |
1053 | state->arp_table = state->misc_table = 0; | |
1054 | } | |
1055 | return state->locked; | |
1056 | } | |
1057 | ||
1058 | static void *lec_itf_walk(struct lec_state *state, loff_t *l) | |
1059 | { | |
1060 | struct net_device *dev; | |
1061 | void *v; | |
1062 | ||
1063 | dev = state->dev ? state->dev : dev_lec[state->itf]; | |
524ad0a7 WC |
1064 | v = (dev && netdev_priv(dev)) ? |
1065 | lec_priv_walk(state, l, netdev_priv(dev)) : NULL; | |
1da177e4 LT |
1066 | if (!v && dev) { |
1067 | dev_put(dev); | |
1068 | /* Partial state reset for the next time we get called */ | |
1069 | dev = NULL; | |
1070 | } | |
1071 | state->dev = dev; | |
1072 | return v; | |
1073 | } | |
1074 | ||
1075 | static void *lec_get_idx(struct lec_state *state, loff_t l) | |
1076 | { | |
1077 | void *v = NULL; | |
1078 | ||
1079 | for (; state->itf < MAX_LEC_ITF; state->itf++) { | |
1080 | v = lec_itf_walk(state, &l); | |
1081 | if (v) | |
1082 | break; | |
1083 | } | |
d44f7746 | 1084 | return v; |
1da177e4 LT |
1085 | } |
1086 | ||
1087 | static void *lec_seq_start(struct seq_file *seq, loff_t *pos) | |
1088 | { | |
1089 | struct lec_state *state = seq->private; | |
1090 | ||
1091 | state->itf = 0; | |
1092 | state->dev = NULL; | |
1093 | state->locked = NULL; | |
1094 | state->arp_table = 0; | |
1095 | state->misc_table = 0; | |
2e1e9848 | 1096 | state->node = SEQ_START_TOKEN; |
1da177e4 | 1097 | |
2e1e9848 | 1098 | return *pos ? lec_get_idx(state, *pos) : SEQ_START_TOKEN; |
1da177e4 LT |
1099 | } |
1100 | ||
1101 | static void lec_seq_stop(struct seq_file *seq, void *v) | |
1102 | { | |
1103 | struct lec_state *state = seq->private; | |
1104 | ||
1105 | if (state->dev) { | |
1106 | spin_unlock_irqrestore(&state->locked->lec_arp_lock, | |
1107 | state->flags); | |
1108 | dev_put(state->dev); | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
1113 | { | |
1114 | struct lec_state *state = seq->private; | |
1115 | ||
1116 | v = lec_get_idx(state, 1); | |
1117 | *pos += !!PTR_ERR(v); | |
1118 | return v; | |
1119 | } | |
1120 | ||
1121 | static int lec_seq_show(struct seq_file *seq, void *v) | |
1122 | { | |
d44f7746 CW |
1123 | static char lec_banner[] = "Itf MAC ATM destination" |
1124 | " Status Flags " | |
1125 | "VPI/VCI Recv VPI/VCI\n"; | |
1da177e4 | 1126 | |
2e1e9848 | 1127 | if (v == SEQ_START_TOKEN) |
1da177e4 LT |
1128 | seq_puts(seq, lec_banner); |
1129 | else { | |
1130 | struct lec_state *state = seq->private; | |
d44f7746 | 1131 | struct net_device *dev = state->dev; |
d0732f64 | 1132 | struct lec_arp_table *entry = hlist_entry(state->node, struct lec_arp_table, next); |
1da177e4 LT |
1133 | |
1134 | seq_printf(seq, "%s ", dev->name); | |
d0732f64 | 1135 | lec_info(seq, entry); |
1da177e4 LT |
1136 | } |
1137 | return 0; | |
1138 | } | |
1139 | ||
56b3d975 | 1140 | static const struct seq_operations lec_seq_ops = { |
d44f7746 CW |
1141 | .start = lec_seq_start, |
1142 | .next = lec_seq_next, | |
1143 | .stop = lec_seq_stop, | |
1144 | .show = lec_seq_show, | |
1da177e4 LT |
1145 | }; |
1146 | ||
1147 | static int lec_seq_open(struct inode *inode, struct file *file) | |
1148 | { | |
9a8c09e7 | 1149 | return seq_open_private(file, &lec_seq_ops, sizeof(struct lec_state)); |
1da177e4 LT |
1150 | } |
1151 | ||
9a32144e | 1152 | static const struct file_operations lec_seq_fops = { |
d44f7746 CW |
1153 | .owner = THIS_MODULE, |
1154 | .open = lec_seq_open, | |
1155 | .read = seq_read, | |
1156 | .llseek = seq_lseek, | |
9a8c09e7 | 1157 | .release = seq_release_private, |
1da177e4 LT |
1158 | }; |
1159 | #endif | |
1160 | ||
1161 | static int lane_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1162 | { | |
1163 | struct atm_vcc *vcc = ATM_SD(sock); | |
1164 | int err = 0; | |
d44f7746 | 1165 | |
1da177e4 | 1166 | switch (cmd) { |
d44f7746 CW |
1167 | case ATMLEC_CTRL: |
1168 | case ATMLEC_MCAST: | |
1169 | case ATMLEC_DATA: | |
1170 | if (!capable(CAP_NET_ADMIN)) | |
1171 | return -EPERM; | |
1172 | break; | |
1173 | default: | |
1174 | return -ENOIOCTLCMD; | |
1da177e4 LT |
1175 | } |
1176 | ||
1177 | switch (cmd) { | |
d44f7746 CW |
1178 | case ATMLEC_CTRL: |
1179 | err = lecd_attach(vcc, (int)arg); | |
1180 | if (err >= 0) | |
1181 | sock->state = SS_CONNECTED; | |
1182 | break; | |
1183 | case ATMLEC_MCAST: | |
1184 | err = lec_mcast_attach(vcc, (int)arg); | |
1185 | break; | |
1186 | case ATMLEC_DATA: | |
1187 | err = lec_vcc_attach(vcc, (void __user *)arg); | |
1188 | break; | |
1da177e4 LT |
1189 | } |
1190 | ||
1191 | return err; | |
1192 | } | |
1193 | ||
1194 | static struct atm_ioctl lane_ioctl_ops = { | |
d44f7746 CW |
1195 | .owner = THIS_MODULE, |
1196 | .ioctl = lane_ioctl, | |
1da177e4 LT |
1197 | }; |
1198 | ||
1199 | static int __init lane_module_init(void) | |
1200 | { | |
1201 | #ifdef CONFIG_PROC_FS | |
1202 | struct proc_dir_entry *p; | |
1203 | ||
16e297b3 | 1204 | p = proc_create("lec", S_IRUGO, atm_proc_root, &lec_seq_fops); |
dbee0d3f WC |
1205 | if (!p) { |
1206 | printk(KERN_ERR "Unable to initialize /proc/net/atm/lec\n"); | |
1207 | return -ENOMEM; | |
1208 | } | |
1da177e4 LT |
1209 | #endif |
1210 | ||
1211 | register_atm_ioctl(&lane_ioctl_ops); | |
d44f7746 CW |
1212 | printk("lec.c: " __DATE__ " " __TIME__ " initialized\n"); |
1213 | return 0; | |
1da177e4 LT |
1214 | } |
1215 | ||
1216 | static void __exit lane_module_cleanup(void) | |
1217 | { | |
d44f7746 CW |
1218 | int i; |
1219 | struct lec_priv *priv; | |
1da177e4 LT |
1220 | |
1221 | remove_proc_entry("lec", atm_proc_root); | |
1222 | ||
1223 | deregister_atm_ioctl(&lane_ioctl_ops); | |
1224 | ||
d44f7746 CW |
1225 | for (i = 0; i < MAX_LEC_ITF; i++) { |
1226 | if (dev_lec[i] != NULL) { | |
524ad0a7 | 1227 | priv = netdev_priv(dev_lec[i]); |
1da177e4 | 1228 | unregister_netdev(dev_lec[i]); |
d44f7746 CW |
1229 | free_netdev(dev_lec[i]); |
1230 | dev_lec[i] = NULL; | |
1231 | } | |
1232 | } | |
1da177e4 | 1233 | |
d44f7746 | 1234 | return; |
1da177e4 LT |
1235 | } |
1236 | ||
1237 | module_init(lane_module_init); | |
1238 | module_exit(lane_module_cleanup); | |
1239 | ||
1240 | /* | |
1241 | * LANE2: 3.1.3, LE_RESOLVE.request | |
1242 | * Non force allocates memory and fills in *tlvs, fills in *sizeoftlvs. | |
1243 | * If sizeoftlvs == NULL the default TLVs associated with with this | |
1244 | * lec will be used. | |
1245 | * If dst_mac == NULL, targetless LE_ARP will be sent | |
1246 | */ | |
61c33e01 | 1247 | static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force, |
d44f7746 | 1248 | u8 **tlvs, u32 *sizeoftlvs) |
1da177e4 LT |
1249 | { |
1250 | unsigned long flags; | |
524ad0a7 | 1251 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
1252 | struct lec_arp_table *table; |
1253 | struct sk_buff *skb; | |
1254 | int retval; | |
1da177e4 | 1255 | |
d44f7746 | 1256 | if (force == 0) { |
1da177e4 | 1257 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d44f7746 | 1258 | table = lec_arp_find(priv, dst_mac); |
1da177e4 | 1259 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
d44f7746 CW |
1260 | if (table == NULL) |
1261 | return -1; | |
1262 | ||
2afe37cd | 1263 | *tlvs = kmemdup(table->tlvs, table->sizeoftlvs, GFP_ATOMIC); |
d44f7746 CW |
1264 | if (*tlvs == NULL) |
1265 | return -1; | |
1266 | ||
d44f7746 CW |
1267 | *sizeoftlvs = table->sizeoftlvs; |
1268 | ||
1269 | return 0; | |
1270 | } | |
1da177e4 LT |
1271 | |
1272 | if (sizeoftlvs == NULL) | |
1273 | retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, NULL); | |
d44f7746 | 1274 | |
1da177e4 LT |
1275 | else { |
1276 | skb = alloc_skb(*sizeoftlvs, GFP_ATOMIC); | |
1277 | if (skb == NULL) | |
1278 | return -1; | |
1279 | skb->len = *sizeoftlvs; | |
27d7ff46 | 1280 | skb_copy_to_linear_data(skb, *tlvs, *sizeoftlvs); |
1da177e4 LT |
1281 | retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb); |
1282 | } | |
d44f7746 CW |
1283 | return retval; |
1284 | } | |
1da177e4 LT |
1285 | |
1286 | /* | |
1287 | * LANE2: 3.1.4, LE_ASSOCIATE.request | |
1288 | * Associate the *tlvs with the *lan_dst address. | |
1289 | * Will overwrite any previous association | |
1290 | * Returns 1 for success, 0 for failure (out of memory) | |
1291 | * | |
1292 | */ | |
61c33e01 MBJ |
1293 | static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst, |
1294 | const u8 *tlvs, u32 sizeoftlvs) | |
1da177e4 | 1295 | { |
d44f7746 CW |
1296 | int retval; |
1297 | struct sk_buff *skb; | |
524ad0a7 | 1298 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
1299 | |
1300 | if (compare_ether_addr(lan_dst, dev->dev_addr)) | |
1301 | return (0); /* not our mac address */ | |
1302 | ||
1303 | kfree(priv->tlvs); /* NULL if there was no previous association */ | |
1304 | ||
2afe37cd | 1305 | priv->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL); |
d44f7746 CW |
1306 | if (priv->tlvs == NULL) |
1307 | return (0); | |
1308 | priv->sizeoftlvs = sizeoftlvs; | |
d44f7746 CW |
1309 | |
1310 | skb = alloc_skb(sizeoftlvs, GFP_ATOMIC); | |
1311 | if (skb == NULL) | |
1312 | return 0; | |
1313 | skb->len = sizeoftlvs; | |
27d7ff46 | 1314 | skb_copy_to_linear_data(skb, tlvs, sizeoftlvs); |
d44f7746 CW |
1315 | retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb); |
1316 | if (retval != 0) | |
1317 | printk("lec.c: lane2_associate_req() failed\n"); | |
1318 | /* | |
1319 | * If the previous association has changed we must | |
1320 | * somehow notify other LANE entities about the change | |
1321 | */ | |
1322 | return (1); | |
1da177e4 LT |
1323 | } |
1324 | ||
1325 | /* | |
1326 | * LANE2: 3.1.5, LE_ASSOCIATE.indication | |
1327 | * | |
1328 | */ | |
61c33e01 MBJ |
1329 | static void lane2_associate_ind(struct net_device *dev, const u8 *mac_addr, |
1330 | const u8 *tlvs, u32 sizeoftlvs) | |
1da177e4 LT |
1331 | { |
1332 | #if 0 | |
d44f7746 | 1333 | int i = 0; |
1da177e4 | 1334 | #endif |
524ad0a7 | 1335 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
1336 | #if 0 /* |
1337 | * Why have the TLVs in LE_ARP entries | |
1338 | * since we do not use them? When you | |
1339 | * uncomment this code, make sure the | |
1340 | * TLVs get freed when entry is killed | |
1341 | */ | |
1342 | struct lec_arp_table *entry = lec_arp_find(priv, mac_addr); | |
1da177e4 | 1343 | |
d44f7746 CW |
1344 | if (entry == NULL) |
1345 | return; /* should not happen */ | |
1da177e4 | 1346 | |
d44f7746 | 1347 | kfree(entry->tlvs); |
1da177e4 | 1348 | |
2afe37cd | 1349 | entry->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL); |
d44f7746 CW |
1350 | if (entry->tlvs == NULL) |
1351 | return; | |
d44f7746 | 1352 | entry->sizeoftlvs = sizeoftlvs; |
1da177e4 LT |
1353 | #endif |
1354 | #if 0 | |
d44f7746 CW |
1355 | printk("lec.c: lane2_associate_ind()\n"); |
1356 | printk("dump of tlvs, sizeoftlvs=%d\n", sizeoftlvs); | |
1357 | while (i < sizeoftlvs) | |
1358 | printk("%02x ", tlvs[i++]); | |
1359 | ||
1360 | printk("\n"); | |
1da177e4 LT |
1361 | #endif |
1362 | ||
d44f7746 CW |
1363 | /* tell MPOA about the TLVs we saw */ |
1364 | if (priv->lane2_ops && priv->lane2_ops->associate_indicator) { | |
1365 | priv->lane2_ops->associate_indicator(dev, mac_addr, | |
1366 | tlvs, sizeoftlvs); | |
1367 | } | |
1368 | return; | |
1da177e4 LT |
1369 | } |
1370 | ||
1371 | /* | |
1372 | * Here starts what used to lec_arpc.c | |
1373 | * | |
1374 | * lec_arpc.c was added here when making | |
1375 | * lane client modular. October 1997 | |
1da177e4 LT |
1376 | */ |
1377 | ||
1378 | #include <linux/types.h> | |
1da177e4 LT |
1379 | #include <linux/timer.h> |
1380 | #include <asm/param.h> | |
1381 | #include <asm/atomic.h> | |
1382 | #include <linux/inetdevice.h> | |
1383 | #include <net/route.h> | |
1384 | ||
1da177e4 | 1385 | #if 0 |
52240062 | 1386 | #define pr_debug(format,args...) |
1da177e4 | 1387 | /* |
52240062 | 1388 | #define pr_debug printk |
1da177e4 LT |
1389 | */ |
1390 | #endif | |
1391 | #define DEBUG_ARP_TABLE 0 | |
1392 | ||
1393 | #define LEC_ARP_REFRESH_INTERVAL (3*HZ) | |
1394 | ||
c4028958 | 1395 | static void lec_arp_check_expire(struct work_struct *work); |
1da177e4 LT |
1396 | static void lec_arp_expire_arp(unsigned long data); |
1397 | ||
f7d57453 | 1398 | /* |
1da177e4 LT |
1399 | * Arp table funcs |
1400 | */ | |
1401 | ||
1402 | #define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE -1)) | |
1403 | ||
1404 | /* | |
1405 | * Initialization of arp-cache | |
1406 | */ | |
1fa9961d | 1407 | static void lec_arp_init(struct lec_priv *priv) |
1da177e4 | 1408 | { |
1fa9961d | 1409 | unsigned short i; |
1da177e4 | 1410 | |
1fa9961d | 1411 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 1412 | INIT_HLIST_HEAD(&priv->lec_arp_tables[i]); |
1fa9961d | 1413 | } |
f7d57453 YH |
1414 | INIT_HLIST_HEAD(&priv->lec_arp_empty_ones); |
1415 | INIT_HLIST_HEAD(&priv->lec_no_forward); | |
1416 | INIT_HLIST_HEAD(&priv->mcast_fwds); | |
1da177e4 | 1417 | spin_lock_init(&priv->lec_arp_lock); |
c4028958 | 1418 | INIT_DELAYED_WORK(&priv->lec_arp_work, lec_arp_check_expire); |
987e46bd | 1419 | schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL); |
1da177e4 LT |
1420 | } |
1421 | ||
1fa9961d | 1422 | static void lec_arp_clear_vccs(struct lec_arp_table *entry) |
1da177e4 | 1423 | { |
1fa9961d | 1424 | if (entry->vcc) { |
1da177e4 LT |
1425 | struct atm_vcc *vcc = entry->vcc; |
1426 | struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); | |
1fa9961d | 1427 | struct net_device *dev = (struct net_device *)vcc->proto_data; |
1da177e4 | 1428 | |
1fa9961d | 1429 | vcc->pop = vpriv->old_pop; |
1da177e4 LT |
1430 | if (vpriv->xoff) |
1431 | netif_wake_queue(dev); | |
1432 | kfree(vpriv); | |
1433 | vcc->user_back = NULL; | |
1fa9961d | 1434 | vcc->push = entry->old_push; |
1da177e4 | 1435 | vcc_release_async(vcc, -EPIPE); |
d0732f64 | 1436 | entry->vcc = NULL; |
1fa9961d CW |
1437 | } |
1438 | if (entry->recv_vcc) { | |
1439 | entry->recv_vcc->push = entry->old_recv_push; | |
1da177e4 | 1440 | vcc_release_async(entry->recv_vcc, -EPIPE); |
1fa9961d CW |
1441 | entry->recv_vcc = NULL; |
1442 | } | |
1da177e4 LT |
1443 | } |
1444 | ||
1445 | /* | |
1446 | * Insert entry to lec_arp_table | |
1447 | * LANE2: Add to the end of the list to satisfy 8.1.13 | |
1448 | */ | |
1fa9961d | 1449 | static inline void |
d0732f64 | 1450 | lec_arp_add(struct lec_priv *priv, struct lec_arp_table *entry) |
1da177e4 | 1451 | { |
d0732f64 | 1452 | struct hlist_head *tmp; |
1fa9961d | 1453 | |
d0732f64 CW |
1454 | tmp = &priv->lec_arp_tables[HASH(entry->mac_addr[ETH_ALEN - 1])]; |
1455 | hlist_add_head(&entry->next, tmp); | |
1fa9961d | 1456 | |
52240062 | 1457 | pr_debug("LEC_ARP: Added entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n", |
d0732f64 CW |
1458 | 0xff & entry->mac_addr[0], 0xff & entry->mac_addr[1], |
1459 | 0xff & entry->mac_addr[2], 0xff & entry->mac_addr[3], | |
1460 | 0xff & entry->mac_addr[4], 0xff & entry->mac_addr[5]); | |
1da177e4 LT |
1461 | } |
1462 | ||
1463 | /* | |
1464 | * Remove entry from lec_arp_table | |
1465 | */ | |
1fa9961d CW |
1466 | static int |
1467 | lec_arp_remove(struct lec_priv *priv, struct lec_arp_table *to_remove) | |
1da177e4 | 1468 | { |
d0732f64 CW |
1469 | struct hlist_node *node; |
1470 | struct lec_arp_table *entry; | |
1471 | int i, remove_vcc = 1; | |
1fa9961d CW |
1472 | |
1473 | if (!to_remove) { | |
1474 | return -1; | |
1475 | } | |
d0732f64 CW |
1476 | |
1477 | hlist_del(&to_remove->next); | |
1fa9961d CW |
1478 | del_timer(&to_remove->timer); |
1479 | ||
d0732f64 | 1480 | /* If this is the only MAC connected to this VCC, also tear down the VCC */ |
1fa9961d CW |
1481 | if (to_remove->status >= ESI_FLUSH_PENDING) { |
1482 | /* | |
1483 | * ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT | |
1484 | */ | |
d0732f64 CW |
1485 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
1486 | hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) { | |
1487 | if (memcmp(to_remove->atm_addr, | |
1488 | entry->atm_addr, ATM_ESA_LEN) == 0) { | |
1fa9961d CW |
1489 | remove_vcc = 0; |
1490 | break; | |
1491 | } | |
1492 | } | |
1493 | } | |
1494 | if (remove_vcc) | |
1495 | lec_arp_clear_vccs(to_remove); | |
1496 | } | |
1497 | skb_queue_purge(&to_remove->tx_wait); /* FIXME: good place for this? */ | |
1498 | ||
52240062 | 1499 | pr_debug("LEC_ARP: Removed entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n", |
1fa9961d CW |
1500 | 0xff & to_remove->mac_addr[0], 0xff & to_remove->mac_addr[1], |
1501 | 0xff & to_remove->mac_addr[2], 0xff & to_remove->mac_addr[3], | |
1502 | 0xff & to_remove->mac_addr[4], 0xff & to_remove->mac_addr[5]); | |
1503 | return 0; | |
1da177e4 LT |
1504 | } |
1505 | ||
1506 | #if DEBUG_ARP_TABLE | |
1fa9961d | 1507 | static char *get_status_string(unsigned char st) |
1da177e4 | 1508 | { |
1fa9961d CW |
1509 | switch (st) { |
1510 | case ESI_UNKNOWN: | |
1511 | return "ESI_UNKNOWN"; | |
1512 | case ESI_ARP_PENDING: | |
1513 | return "ESI_ARP_PENDING"; | |
1514 | case ESI_VC_PENDING: | |
1515 | return "ESI_VC_PENDING"; | |
1516 | case ESI_FLUSH_PENDING: | |
1517 | return "ESI_FLUSH_PENDING"; | |
1518 | case ESI_FORWARD_DIRECT: | |
1519 | return "ESI_FORWARD_DIRECT"; | |
1520 | default: | |
1521 | return "<UNKNOWN>"; | |
1522 | } | |
1da177e4 | 1523 | } |
1da177e4 | 1524 | |
1fa9961d | 1525 | static void dump_arp_table(struct lec_priv *priv) |
1da177e4 | 1526 | { |
d0732f64 | 1527 | struct hlist_node *node; |
1fa9961d | 1528 | struct lec_arp_table *rulla; |
d0732f64 CW |
1529 | char buf[256]; |
1530 | int i, j, offset; | |
1fa9961d CW |
1531 | |
1532 | printk("Dump %p:\n", priv); | |
1533 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
d0732f64 CW |
1534 | hlist_for_each_entry(rulla, node, &priv->lec_arp_tables[i], next) { |
1535 | offset = 0; | |
1536 | offset += sprintf(buf, "%d: %p\n", i, rulla); | |
1fa9961d CW |
1537 | offset += sprintf(buf + offset, "Mac:"); |
1538 | for (j = 0; j < ETH_ALEN; j++) { | |
1539 | offset += sprintf(buf + offset, | |
1540 | "%2.2x ", | |
1541 | rulla->mac_addr[j] & 0xff); | |
1542 | } | |
1543 | offset += sprintf(buf + offset, "Atm:"); | |
1544 | for (j = 0; j < ATM_ESA_LEN; j++) { | |
1545 | offset += sprintf(buf + offset, | |
1546 | "%2.2x ", | |
1547 | rulla->atm_addr[j] & 0xff); | |
1548 | } | |
1549 | offset += sprintf(buf + offset, | |
1550 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1551 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1552 | rulla->vcc ? rulla->vcc->vci : 0, | |
1553 | rulla->recv_vcc ? rulla->recv_vcc-> | |
1554 | vpi : 0, | |
1555 | rulla->recv_vcc ? rulla->recv_vcc-> | |
1556 | vci : 0, rulla->last_used, | |
1557 | rulla->timestamp, rulla->no_tries); | |
1558 | offset += | |
1559 | sprintf(buf + offset, | |
1560 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1561 | rulla->flags, rulla->packets_flooded, | |
1562 | get_status_string(rulla->status)); | |
d0732f64 | 1563 | printk("%s\n", buf); |
1fa9961d | 1564 | } |
1fa9961d | 1565 | } |
d0732f64 CW |
1566 | |
1567 | if (!hlist_empty(&priv->lec_no_forward)) | |
1fa9961d | 1568 | printk("No forward\n"); |
d0732f64 | 1569 | hlist_for_each_entry(rulla, node, &priv->lec_no_forward, next) { |
1fa9961d CW |
1570 | offset = 0; |
1571 | offset += sprintf(buf + offset, "Mac:"); | |
1572 | for (j = 0; j < ETH_ALEN; j++) { | |
1573 | offset += sprintf(buf + offset, "%2.2x ", | |
1574 | rulla->mac_addr[j] & 0xff); | |
1575 | } | |
1576 | offset += sprintf(buf + offset, "Atm:"); | |
1577 | for (j = 0; j < ATM_ESA_LEN; j++) { | |
1578 | offset += sprintf(buf + offset, "%2.2x ", | |
1579 | rulla->atm_addr[j] & 0xff); | |
1580 | } | |
1581 | offset += sprintf(buf + offset, | |
1582 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1583 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1584 | rulla->vcc ? rulla->vcc->vci : 0, | |
1585 | rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, | |
1586 | rulla->recv_vcc ? rulla->recv_vcc->vci : 0, | |
1587 | rulla->last_used, | |
1588 | rulla->timestamp, rulla->no_tries); | |
1589 | offset += sprintf(buf + offset, | |
1590 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1591 | rulla->flags, rulla->packets_flooded, | |
1592 | get_status_string(rulla->status)); | |
d0732f64 | 1593 | printk("%s\n", buf); |
1fa9961d | 1594 | } |
d0732f64 CW |
1595 | |
1596 | if (!hlist_empty(&priv->lec_arp_empty_ones)) | |
1fa9961d | 1597 | printk("Empty ones\n"); |
d0732f64 | 1598 | hlist_for_each_entry(rulla, node, &priv->lec_arp_empty_ones, next) { |
1fa9961d CW |
1599 | offset = 0; |
1600 | offset += sprintf(buf + offset, "Mac:"); | |
1601 | for (j = 0; j < ETH_ALEN; j++) { | |
1602 | offset += sprintf(buf + offset, "%2.2x ", | |
1603 | rulla->mac_addr[j] & 0xff); | |
1604 | } | |
1605 | offset += sprintf(buf + offset, "Atm:"); | |
1606 | for (j = 0; j < ATM_ESA_LEN; j++) { | |
1607 | offset += sprintf(buf + offset, "%2.2x ", | |
1608 | rulla->atm_addr[j] & 0xff); | |
1609 | } | |
1610 | offset += sprintf(buf + offset, | |
1611 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1612 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1613 | rulla->vcc ? rulla->vcc->vci : 0, | |
1614 | rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, | |
1615 | rulla->recv_vcc ? rulla->recv_vcc->vci : 0, | |
1616 | rulla->last_used, | |
1617 | rulla->timestamp, rulla->no_tries); | |
1618 | offset += sprintf(buf + offset, | |
1619 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1620 | rulla->flags, rulla->packets_flooded, | |
1621 | get_status_string(rulla->status)); | |
1fa9961d CW |
1622 | printk("%s", buf); |
1623 | } | |
1624 | ||
d0732f64 | 1625 | if (!hlist_empty(&priv->mcast_fwds)) |
1fa9961d | 1626 | printk("Multicast Forward VCCs\n"); |
d0732f64 | 1627 | hlist_for_each_entry(rulla, node, &priv->mcast_fwds, next) { |
1fa9961d CW |
1628 | offset = 0; |
1629 | offset += sprintf(buf + offset, "Mac:"); | |
1630 | for (j = 0; j < ETH_ALEN; j++) { | |
1631 | offset += sprintf(buf + offset, "%2.2x ", | |
1632 | rulla->mac_addr[j] & 0xff); | |
1633 | } | |
1634 | offset += sprintf(buf + offset, "Atm:"); | |
1635 | for (j = 0; j < ATM_ESA_LEN; j++) { | |
1636 | offset += sprintf(buf + offset, "%2.2x ", | |
1637 | rulla->atm_addr[j] & 0xff); | |
1638 | } | |
1639 | offset += sprintf(buf + offset, | |
1640 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1641 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1642 | rulla->vcc ? rulla->vcc->vci : 0, | |
1643 | rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, | |
1644 | rulla->recv_vcc ? rulla->recv_vcc->vci : 0, | |
1645 | rulla->last_used, | |
1646 | rulla->timestamp, rulla->no_tries); | |
1647 | offset += sprintf(buf + offset, | |
1648 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1649 | rulla->flags, rulla->packets_flooded, | |
1650 | get_status_string(rulla->status)); | |
d0732f64 | 1651 | printk("%s\n", buf); |
1fa9961d | 1652 | } |
1da177e4 | 1653 | |
1da177e4 | 1654 | } |
d0732f64 CW |
1655 | #else |
1656 | #define dump_arp_table(priv) do { } while (0) | |
1657 | #endif | |
1da177e4 LT |
1658 | |
1659 | /* | |
1660 | * Destruction of arp-cache | |
1661 | */ | |
1fa9961d | 1662 | static void lec_arp_destroy(struct lec_priv *priv) |
1da177e4 LT |
1663 | { |
1664 | unsigned long flags; | |
d0732f64 CW |
1665 | struct hlist_node *node, *next; |
1666 | struct lec_arp_table *entry; | |
1fa9961d CW |
1667 | int i; |
1668 | ||
987e46bd | 1669 | cancel_rearming_delayed_work(&priv->lec_arp_work); |
1da177e4 | 1670 | |
1fa9961d CW |
1671 | /* |
1672 | * Remove all entries | |
1673 | */ | |
1da177e4 LT |
1674 | |
1675 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d | 1676 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 1677 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) { |
1fa9961d | 1678 | lec_arp_remove(priv, entry); |
33a9c2d4 | 1679 | lec_arp_put(entry); |
1fa9961d | 1680 | } |
d0732f64 | 1681 | INIT_HLIST_HEAD(&priv->lec_arp_tables[i]); |
1fa9961d | 1682 | } |
d0732f64 CW |
1683 | |
1684 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) { | |
1fa9961d CW |
1685 | del_timer_sync(&entry->timer); |
1686 | lec_arp_clear_vccs(entry); | |
d0732f64 | 1687 | hlist_del(&entry->next); |
33a9c2d4 | 1688 | lec_arp_put(entry); |
1fa9961d | 1689 | } |
d0732f64 CW |
1690 | INIT_HLIST_HEAD(&priv->lec_arp_empty_ones); |
1691 | ||
1692 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_no_forward, next) { | |
1fa9961d CW |
1693 | del_timer_sync(&entry->timer); |
1694 | lec_arp_clear_vccs(entry); | |
d0732f64 | 1695 | hlist_del(&entry->next); |
33a9c2d4 | 1696 | lec_arp_put(entry); |
1fa9961d | 1697 | } |
d0732f64 CW |
1698 | INIT_HLIST_HEAD(&priv->lec_no_forward); |
1699 | ||
1700 | hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) { | |
1fa9961d CW |
1701 | /* No timer, LANEv2 7.1.20 and 2.3.5.3 */ |
1702 | lec_arp_clear_vccs(entry); | |
d0732f64 | 1703 | hlist_del(&entry->next); |
33a9c2d4 | 1704 | lec_arp_put(entry); |
1fa9961d | 1705 | } |
d0732f64 | 1706 | INIT_HLIST_HEAD(&priv->mcast_fwds); |
1fa9961d | 1707 | priv->mcast_vcc = NULL; |
1da177e4 LT |
1708 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1709 | } | |
1710 | ||
f7d57453 | 1711 | /* |
1da177e4 LT |
1712 | * Find entry by mac_address |
1713 | */ | |
1fa9961d | 1714 | static struct lec_arp_table *lec_arp_find(struct lec_priv *priv, |
61c33e01 | 1715 | const unsigned char *mac_addr) |
1da177e4 | 1716 | { |
d0732f64 CW |
1717 | struct hlist_node *node; |
1718 | struct hlist_head *head; | |
1719 | struct lec_arp_table *entry; | |
1fa9961d | 1720 | |
52240062 | 1721 | pr_debug("LEC_ARP: lec_arp_find :%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n", |
1fa9961d CW |
1722 | mac_addr[0] & 0xff, mac_addr[1] & 0xff, mac_addr[2] & 0xff, |
1723 | mac_addr[3] & 0xff, mac_addr[4] & 0xff, mac_addr[5] & 0xff); | |
1fa9961d | 1724 | |
d0732f64 CW |
1725 | head = &priv->lec_arp_tables[HASH(mac_addr[ETH_ALEN - 1])]; |
1726 | hlist_for_each_entry(entry, node, head, next) { | |
1727 | if (!compare_ether_addr(mac_addr, entry->mac_addr)) { | |
1728 | return entry; | |
1fa9961d | 1729 | } |
1fa9961d CW |
1730 | } |
1731 | return NULL; | |
1da177e4 LT |
1732 | } |
1733 | ||
1fa9961d | 1734 | static struct lec_arp_table *make_entry(struct lec_priv *priv, |
61c33e01 | 1735 | const unsigned char *mac_addr) |
1da177e4 | 1736 | { |
1fa9961d CW |
1737 | struct lec_arp_table *to_return; |
1738 | ||
1739 | to_return = kzalloc(sizeof(struct lec_arp_table), GFP_ATOMIC); | |
1740 | if (!to_return) { | |
1741 | printk("LEC: Arp entry kmalloc failed\n"); | |
1742 | return NULL; | |
1743 | } | |
1744 | memcpy(to_return->mac_addr, mac_addr, ETH_ALEN); | |
d0732f64 | 1745 | INIT_HLIST_NODE(&to_return->next); |
b24b8a24 PE |
1746 | setup_timer(&to_return->timer, lec_arp_expire_arp, |
1747 | (unsigned long)to_return); | |
1fa9961d CW |
1748 | to_return->last_used = jiffies; |
1749 | to_return->priv = priv; | |
1750 | skb_queue_head_init(&to_return->tx_wait); | |
33a9c2d4 | 1751 | atomic_set(&to_return->usage, 1); |
1fa9961d | 1752 | return to_return; |
1da177e4 LT |
1753 | } |
1754 | ||
1fa9961d CW |
1755 | /* Arp sent timer expired */ |
1756 | static void lec_arp_expire_arp(unsigned long data) | |
1da177e4 | 1757 | { |
1fa9961d CW |
1758 | struct lec_arp_table *entry; |
1759 | ||
1760 | entry = (struct lec_arp_table *)data; | |
1761 | ||
52240062 | 1762 | pr_debug("lec_arp_expire_arp\n"); |
1fa9961d CW |
1763 | if (entry->status == ESI_ARP_PENDING) { |
1764 | if (entry->no_tries <= entry->priv->max_retry_count) { | |
1765 | if (entry->is_rdesc) | |
1766 | send_to_lecd(entry->priv, l_rdesc_arp_xmt, | |
1767 | entry->mac_addr, NULL, NULL); | |
1768 | else | |
1769 | send_to_lecd(entry->priv, l_arp_xmt, | |
1770 | entry->mac_addr, NULL, NULL); | |
1771 | entry->no_tries++; | |
1772 | } | |
1773 | mod_timer(&entry->timer, jiffies + (1 * HZ)); | |
1774 | } | |
1da177e4 LT |
1775 | } |
1776 | ||
1fa9961d CW |
1777 | /* Unknown/unused vcc expire, remove associated entry */ |
1778 | static void lec_arp_expire_vcc(unsigned long data) | |
1da177e4 LT |
1779 | { |
1780 | unsigned long flags; | |
1fa9961d CW |
1781 | struct lec_arp_table *to_remove = (struct lec_arp_table *)data; |
1782 | struct lec_priv *priv = (struct lec_priv *)to_remove->priv; | |
1da177e4 | 1783 | |
1fa9961d | 1784 | del_timer(&to_remove->timer); |
1da177e4 | 1785 | |
52240062 | 1786 | pr_debug("LEC_ARP %p %p: lec_arp_expire_vcc vpi:%d vci:%d\n", |
1fa9961d CW |
1787 | to_remove, priv, |
1788 | to_remove->vcc ? to_remove->recv_vcc->vpi : 0, | |
1789 | to_remove->vcc ? to_remove->recv_vcc->vci : 0); | |
1da177e4 LT |
1790 | |
1791 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
d0732f64 | 1792 | hlist_del(&to_remove->next); |
1da177e4 LT |
1793 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1794 | ||
1fa9961d | 1795 | lec_arp_clear_vccs(to_remove); |
33a9c2d4 | 1796 | lec_arp_put(to_remove); |
1da177e4 LT |
1797 | } |
1798 | ||
1799 | /* | |
1800 | * Expire entries. | |
1801 | * 1. Re-set timer | |
1802 | * 2. For each entry, delete entries that have aged past the age limit. | |
1803 | * 3. For each entry, depending on the status of the entry, perform | |
1804 | * the following maintenance. | |
1805 | * a. If status is ESI_VC_PENDING or ESI_ARP_PENDING then if the | |
1806 | * tick_count is above the max_unknown_frame_time, clear | |
1807 | * the tick_count to zero and clear the packets_flooded counter | |
1808 | * to zero. This supports the packet rate limit per address | |
1809 | * while flooding unknowns. | |
1810 | * b. If the status is ESI_FLUSH_PENDING and the tick_count is greater | |
1811 | * than or equal to the path_switching_delay, change the status | |
1812 | * to ESI_FORWARD_DIRECT. This causes the flush period to end | |
1813 | * regardless of the progress of the flush protocol. | |
1814 | */ | |
c4028958 | 1815 | static void lec_arp_check_expire(struct work_struct *work) |
1da177e4 LT |
1816 | { |
1817 | unsigned long flags; | |
c4028958 DH |
1818 | struct lec_priv *priv = |
1819 | container_of(work, struct lec_priv, lec_arp_work.work); | |
d0732f64 CW |
1820 | struct hlist_node *node, *next; |
1821 | struct lec_arp_table *entry; | |
1fa9961d CW |
1822 | unsigned long now; |
1823 | unsigned long time_to_check; | |
1824 | int i; | |
1825 | ||
52240062 | 1826 | pr_debug("lec_arp_check_expire %p\n", priv); |
1da177e4 | 1827 | now = jiffies; |
6656e3c4 | 1828 | restart: |
1da177e4 | 1829 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d | 1830 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 1831 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) { |
1fa9961d | 1832 | if ((entry->flags) & LEC_REMOTE_FLAG && |
1da177e4 LT |
1833 | priv->topology_change) |
1834 | time_to_check = priv->forward_delay_time; | |
1835 | else | |
1836 | time_to_check = priv->aging_time; | |
1837 | ||
52240062 | 1838 | pr_debug("About to expire: %lx - %lx > %lx\n", |
1fa9961d CW |
1839 | now, entry->last_used, time_to_check); |
1840 | if (time_after(now, entry->last_used + time_to_check) | |
1841 | && !(entry->flags & LEC_PERMANENT_FLAG) | |
1842 | && !(entry->mac_addr[0] & 0x01)) { /* LANE2: 7.1.20 */ | |
1da177e4 | 1843 | /* Remove entry */ |
52240062 | 1844 | pr_debug("LEC:Entry timed out\n"); |
1da177e4 | 1845 | lec_arp_remove(priv, entry); |
33a9c2d4 | 1846 | lec_arp_put(entry); |
1da177e4 LT |
1847 | } else { |
1848 | /* Something else */ | |
1849 | if ((entry->status == ESI_VC_PENDING || | |
1fa9961d | 1850 | entry->status == ESI_ARP_PENDING) |
1da177e4 | 1851 | && time_after_eq(now, |
1fa9961d CW |
1852 | entry->timestamp + |
1853 | priv-> | |
1854 | max_unknown_frame_time)) { | |
1da177e4 LT |
1855 | entry->timestamp = jiffies; |
1856 | entry->packets_flooded = 0; | |
1857 | if (entry->status == ESI_VC_PENDING) | |
1fa9961d CW |
1858 | send_to_lecd(priv, l_svc_setup, |
1859 | entry->mac_addr, | |
1860 | entry->atm_addr, | |
1861 | NULL); | |
1da177e4 | 1862 | } |
1fa9961d CW |
1863 | if (entry->status == ESI_FLUSH_PENDING |
1864 | && | |
1865 | time_after_eq(now, entry->timestamp + | |
1866 | priv->path_switching_delay)) { | |
1da177e4 | 1867 | struct sk_buff *skb; |
6656e3c4 | 1868 | struct atm_vcc *vcc = entry->vcc; |
1da177e4 | 1869 | |
6656e3c4 CW |
1870 | lec_arp_hold(entry); |
1871 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1872 | while ((skb = skb_dequeue(&entry->tx_wait)) != NULL) | |
162619e5 | 1873 | lec_send(vcc, skb); |
1da177e4 | 1874 | entry->last_used = jiffies; |
1fa9961d | 1875 | entry->status = ESI_FORWARD_DIRECT; |
6656e3c4 CW |
1876 | lec_arp_put(entry); |
1877 | goto restart; | |
1da177e4 | 1878 | } |
1da177e4 LT |
1879 | } |
1880 | } | |
1881 | } | |
1882 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1883 | ||
987e46bd | 1884 | schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL); |
1da177e4 | 1885 | } |
1fa9961d | 1886 | |
1da177e4 LT |
1887 | /* |
1888 | * Try to find vcc where mac_address is attached. | |
f7d57453 | 1889 | * |
1da177e4 | 1890 | */ |
1fa9961d | 1891 | static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv, |
61c33e01 | 1892 | const unsigned char *mac_to_find, int is_rdesc, |
1fa9961d | 1893 | struct lec_arp_table **ret_entry) |
1da177e4 LT |
1894 | { |
1895 | unsigned long flags; | |
1fa9961d | 1896 | struct lec_arp_table *entry; |
1da177e4 LT |
1897 | struct atm_vcc *found; |
1898 | ||
1fa9961d CW |
1899 | if (mac_to_find[0] & 0x01) { |
1900 | switch (priv->lane_version) { | |
1901 | case 1: | |
1902 | return priv->mcast_vcc; | |
1fa9961d CW |
1903 | case 2: /* LANE2 wants arp for multicast addresses */ |
1904 | if (!compare_ether_addr(mac_to_find, bus_mac)) | |
1905 | return priv->mcast_vcc; | |
1906 | break; | |
1907 | default: | |
1908 | break; | |
1909 | } | |
1910 | } | |
1da177e4 LT |
1911 | |
1912 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d CW |
1913 | entry = lec_arp_find(priv, mac_to_find); |
1914 | ||
1915 | if (entry) { | |
1916 | if (entry->status == ESI_FORWARD_DIRECT) { | |
1917 | /* Connection Ok */ | |
1918 | entry->last_used = jiffies; | |
6656e3c4 | 1919 | lec_arp_hold(entry); |
1fa9961d CW |
1920 | *ret_entry = entry; |
1921 | found = entry->vcc; | |
1da177e4 | 1922 | goto out; |
1fa9961d CW |
1923 | } |
1924 | /* | |
1925 | * If the LE_ARP cache entry is still pending, reset count to 0 | |
75b895c1 ST |
1926 | * so another LE_ARP request can be made for this frame. |
1927 | */ | |
1928 | if (entry->status == ESI_ARP_PENDING) { | |
1929 | entry->no_tries = 0; | |
1930 | } | |
1fa9961d CW |
1931 | /* |
1932 | * Data direct VC not yet set up, check to see if the unknown | |
1933 | * frame count is greater than the limit. If the limit has | |
1934 | * not been reached, allow the caller to send packet to | |
1935 | * BUS. | |
1936 | */ | |
1937 | if (entry->status != ESI_FLUSH_PENDING && | |
1938 | entry->packets_flooded < | |
1939 | priv->maximum_unknown_frame_count) { | |
1940 | entry->packets_flooded++; | |
52240062 | 1941 | pr_debug("LEC_ARP: Flooding..\n"); |
1fa9961d | 1942 | found = priv->mcast_vcc; |
1da177e4 | 1943 | goto out; |
1fa9961d CW |
1944 | } |
1945 | /* | |
1946 | * We got here because entry->status == ESI_FLUSH_PENDING | |
1da177e4 LT |
1947 | * or BUS flood limit was reached for an entry which is |
1948 | * in ESI_ARP_PENDING or ESI_VC_PENDING state. | |
1949 | */ | |
6656e3c4 | 1950 | lec_arp_hold(entry); |
1fa9961d | 1951 | *ret_entry = entry; |
52240062 | 1952 | pr_debug("lec: entry->status %d entry->vcc %p\n", entry->status, |
1fa9961d CW |
1953 | entry->vcc); |
1954 | found = NULL; | |
1955 | } else { | |
1956 | /* No matching entry was found */ | |
1957 | entry = make_entry(priv, mac_to_find); | |
52240062 | 1958 | pr_debug("LEC_ARP: Making entry\n"); |
1fa9961d CW |
1959 | if (!entry) { |
1960 | found = priv->mcast_vcc; | |
1da177e4 | 1961 | goto out; |
1fa9961d CW |
1962 | } |
1963 | lec_arp_add(priv, entry); | |
1964 | /* We want arp-request(s) to be sent */ | |
1965 | entry->packets_flooded = 1; | |
1966 | entry->status = ESI_ARP_PENDING; | |
1967 | entry->no_tries = 1; | |
1968 | entry->last_used = entry->timestamp = jiffies; | |
1969 | entry->is_rdesc = is_rdesc; | |
1970 | if (entry->is_rdesc) | |
1971 | send_to_lecd(priv, l_rdesc_arp_xmt, mac_to_find, NULL, | |
1972 | NULL); | |
1973 | else | |
1974 | send_to_lecd(priv, l_arp_xmt, mac_to_find, NULL, NULL); | |
1975 | entry->timer.expires = jiffies + (1 * HZ); | |
1976 | entry->timer.function = lec_arp_expire_arp; | |
1977 | add_timer(&entry->timer); | |
1978 | found = priv->mcast_vcc; | |
1979 | } | |
1da177e4 LT |
1980 | |
1981 | out: | |
1982 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1983 | return found; | |
1984 | } | |
1985 | ||
1986 | static int | |
61c33e01 | 1987 | lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr, |
1fa9961d | 1988 | unsigned long permanent) |
1da177e4 LT |
1989 | { |
1990 | unsigned long flags; | |
d0732f64 CW |
1991 | struct hlist_node *node, *next; |
1992 | struct lec_arp_table *entry; | |
1fa9961d | 1993 | int i; |
1da177e4 | 1994 | |
52240062 | 1995 | pr_debug("lec_addr_delete\n"); |
1da177e4 | 1996 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d | 1997 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 1998 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
1999 | if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN) |
2000 | && (permanent || | |
2001 | !(entry->flags & LEC_PERMANENT_FLAG))) { | |
1da177e4 | 2002 | lec_arp_remove(priv, entry); |
33a9c2d4 | 2003 | lec_arp_put(entry); |
1fa9961d | 2004 | } |
1da177e4 | 2005 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d CW |
2006 | return 0; |
2007 | } | |
2008 | } | |
1da177e4 | 2009 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d | 2010 | return -1; |
1da177e4 LT |
2011 | } |
2012 | ||
2013 | /* | |
f7d57453 | 2014 | * Notifies: Response to arp_request (atm_addr != NULL) |
1da177e4 LT |
2015 | */ |
2016 | static void | |
61c33e01 MBJ |
2017 | lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr, |
2018 | const unsigned char *atm_addr, unsigned long remoteflag, | |
1fa9961d | 2019 | unsigned int targetless_le_arp) |
1da177e4 LT |
2020 | { |
2021 | unsigned long flags; | |
d0732f64 | 2022 | struct hlist_node *node, *next; |
1fa9961d CW |
2023 | struct lec_arp_table *entry, *tmp; |
2024 | int i; | |
1da177e4 | 2025 | |
52240062 SH |
2026 | pr_debug("lec:%s", (targetless_le_arp) ? "targetless " : " "); |
2027 | pr_debug("lec_arp_update mac:%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n", | |
1fa9961d CW |
2028 | mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], |
2029 | mac_addr[4], mac_addr[5]); | |
1da177e4 LT |
2030 | |
2031 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d CW |
2032 | entry = lec_arp_find(priv, mac_addr); |
2033 | if (entry == NULL && targetless_le_arp) | |
2034 | goto out; /* | |
2035 | * LANE2: ignore targetless LE_ARPs for which | |
2036 | * we have no entry in the cache. 7.1.30 | |
2037 | */ | |
d0732f64 CW |
2038 | if (!hlist_empty(&priv->lec_arp_empty_ones)) { |
2039 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) { | |
2040 | if (memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN) == 0) { | |
2041 | hlist_del(&entry->next); | |
1fa9961d | 2042 | del_timer(&entry->timer); |
d0732f64 CW |
2043 | tmp = lec_arp_find(priv, mac_addr); |
2044 | if (tmp) { | |
2045 | del_timer(&tmp->timer); | |
2046 | tmp->status = ESI_FORWARD_DIRECT; | |
2047 | memcpy(tmp->atm_addr, atm_addr, ATM_ESA_LEN); | |
2048 | tmp->vcc = entry->vcc; | |
2049 | tmp->old_push = entry->old_push; | |
2050 | tmp->last_used = jiffies; | |
2051 | del_timer(&entry->timer); | |
33a9c2d4 | 2052 | lec_arp_put(entry); |
d0732f64 CW |
2053 | entry = tmp; |
2054 | } else { | |
2055 | entry->status = ESI_FORWARD_DIRECT; | |
2056 | memcpy(entry->mac_addr, mac_addr, ETH_ALEN); | |
2057 | entry->last_used = jiffies; | |
2058 | lec_arp_add(priv, entry); | |
2059 | } | |
2060 | if (remoteflag) | |
2061 | entry->flags |= LEC_REMOTE_FLAG; | |
2062 | else | |
2063 | entry->flags &= ~LEC_REMOTE_FLAG; | |
52240062 | 2064 | pr_debug("After update\n"); |
d0732f64 CW |
2065 | dump_arp_table(priv); |
2066 | goto out; | |
1fa9961d | 2067 | } |
1fa9961d CW |
2068 | } |
2069 | } | |
d0732f64 | 2070 | |
1fa9961d CW |
2071 | entry = lec_arp_find(priv, mac_addr); |
2072 | if (!entry) { | |
2073 | entry = make_entry(priv, mac_addr); | |
2074 | if (!entry) | |
2075 | goto out; | |
2076 | entry->status = ESI_UNKNOWN; | |
2077 | lec_arp_add(priv, entry); | |
2078 | /* Temporary, changes before end of function */ | |
2079 | } | |
2080 | memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN); | |
2081 | del_timer(&entry->timer); | |
2082 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
d0732f64 | 2083 | hlist_for_each_entry(tmp, node, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2084 | if (entry != tmp && |
2085 | !memcmp(tmp->atm_addr, atm_addr, ATM_ESA_LEN)) { | |
2086 | /* Vcc to this host exists */ | |
2087 | if (tmp->status > ESI_VC_PENDING) { | |
2088 | /* | |
2089 | * ESI_FLUSH_PENDING, | |
2090 | * ESI_FORWARD_DIRECT | |
2091 | */ | |
2092 | entry->vcc = tmp->vcc; | |
2093 | entry->old_push = tmp->old_push; | |
2094 | } | |
2095 | entry->status = tmp->status; | |
2096 | break; | |
2097 | } | |
2098 | } | |
2099 | } | |
2100 | if (remoteflag) | |
2101 | entry->flags |= LEC_REMOTE_FLAG; | |
2102 | else | |
2103 | entry->flags &= ~LEC_REMOTE_FLAG; | |
2104 | if (entry->status == ESI_ARP_PENDING || entry->status == ESI_UNKNOWN) { | |
2105 | entry->status = ESI_VC_PENDING; | |
d0732f64 | 2106 | send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL); |
1fa9961d | 2107 | } |
52240062 | 2108 | pr_debug("After update2\n"); |
1fa9961d | 2109 | dump_arp_table(priv); |
1da177e4 LT |
2110 | out: |
2111 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2112 | } | |
2113 | ||
2114 | /* | |
f7d57453 | 2115 | * Notifies: Vcc setup ready |
1da177e4 LT |
2116 | */ |
2117 | static void | |
61c33e01 | 2118 | lec_vcc_added(struct lec_priv *priv, const struct atmlec_ioc *ioc_data, |
1fa9961d CW |
2119 | struct atm_vcc *vcc, |
2120 | void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb)) | |
1da177e4 LT |
2121 | { |
2122 | unsigned long flags; | |
d0732f64 | 2123 | struct hlist_node *node; |
1fa9961d CW |
2124 | struct lec_arp_table *entry; |
2125 | int i, found_entry = 0; | |
1da177e4 LT |
2126 | |
2127 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d CW |
2128 | if (ioc_data->receive == 2) { |
2129 | /* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */ | |
1da177e4 | 2130 | |
52240062 | 2131 | pr_debug("LEC_ARP: Attaching mcast forward\n"); |
1da177e4 | 2132 | #if 0 |
1fa9961d CW |
2133 | entry = lec_arp_find(priv, bus_mac); |
2134 | if (!entry) { | |
2135 | printk("LEC_ARP: Multicast entry not found!\n"); | |
1da177e4 | 2136 | goto out; |
1fa9961d CW |
2137 | } |
2138 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); | |
2139 | entry->recv_vcc = vcc; | |
2140 | entry->old_recv_push = old_push; | |
1da177e4 | 2141 | #endif |
1fa9961d CW |
2142 | entry = make_entry(priv, bus_mac); |
2143 | if (entry == NULL) | |
1da177e4 | 2144 | goto out; |
1fa9961d CW |
2145 | del_timer(&entry->timer); |
2146 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); | |
2147 | entry->recv_vcc = vcc; | |
2148 | entry->old_recv_push = old_push; | |
d0732f64 | 2149 | hlist_add_head(&entry->next, &priv->mcast_fwds); |
1fa9961d CW |
2150 | goto out; |
2151 | } else if (ioc_data->receive == 1) { | |
2152 | /* | |
2153 | * Vcc which we don't want to make default vcc, | |
2154 | * attach it anyway. | |
2155 | */ | |
52240062 | 2156 | pr_debug |
1fa9961d CW |
2157 | ("LEC_ARP:Attaching data direct, not default: " |
2158 | "%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", | |
2159 | ioc_data->atm_addr[0], ioc_data->atm_addr[1], | |
2160 | ioc_data->atm_addr[2], ioc_data->atm_addr[3], | |
2161 | ioc_data->atm_addr[4], ioc_data->atm_addr[5], | |
2162 | ioc_data->atm_addr[6], ioc_data->atm_addr[7], | |
2163 | ioc_data->atm_addr[8], ioc_data->atm_addr[9], | |
2164 | ioc_data->atm_addr[10], ioc_data->atm_addr[11], | |
2165 | ioc_data->atm_addr[12], ioc_data->atm_addr[13], | |
2166 | ioc_data->atm_addr[14], ioc_data->atm_addr[15], | |
2167 | ioc_data->atm_addr[16], ioc_data->atm_addr[17], | |
2168 | ioc_data->atm_addr[18], ioc_data->atm_addr[19]); | |
2169 | entry = make_entry(priv, bus_mac); | |
2170 | if (entry == NULL) | |
1da177e4 | 2171 | goto out; |
1fa9961d CW |
2172 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); |
2173 | memset(entry->mac_addr, 0, ETH_ALEN); | |
2174 | entry->recv_vcc = vcc; | |
2175 | entry->old_recv_push = old_push; | |
2176 | entry->status = ESI_UNKNOWN; | |
2177 | entry->timer.expires = jiffies + priv->vcc_timeout_period; | |
2178 | entry->timer.function = lec_arp_expire_vcc; | |
d0732f64 | 2179 | hlist_add_head(&entry->next, &priv->lec_no_forward); |
1fa9961d | 2180 | add_timer(&entry->timer); |
1da177e4 LT |
2181 | dump_arp_table(priv); |
2182 | goto out; | |
1fa9961d | 2183 | } |
52240062 | 2184 | pr_debug |
1fa9961d CW |
2185 | ("LEC_ARP:Attaching data direct, default: " |
2186 | "%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", | |
2187 | ioc_data->atm_addr[0], ioc_data->atm_addr[1], | |
2188 | ioc_data->atm_addr[2], ioc_data->atm_addr[3], | |
2189 | ioc_data->atm_addr[4], ioc_data->atm_addr[5], | |
2190 | ioc_data->atm_addr[6], ioc_data->atm_addr[7], | |
2191 | ioc_data->atm_addr[8], ioc_data->atm_addr[9], | |
2192 | ioc_data->atm_addr[10], ioc_data->atm_addr[11], | |
2193 | ioc_data->atm_addr[12], ioc_data->atm_addr[13], | |
2194 | ioc_data->atm_addr[14], ioc_data->atm_addr[15], | |
2195 | ioc_data->atm_addr[16], ioc_data->atm_addr[17], | |
2196 | ioc_data->atm_addr[18], ioc_data->atm_addr[19]); | |
2197 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
d0732f64 | 2198 | hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2199 | if (memcmp |
2200 | (ioc_data->atm_addr, entry->atm_addr, | |
2201 | ATM_ESA_LEN) == 0) { | |
52240062 SH |
2202 | pr_debug("LEC_ARP: Attaching data direct\n"); |
2203 | pr_debug("Currently -> Vcc: %d, Rvcc:%d\n", | |
1fa9961d CW |
2204 | entry->vcc ? entry->vcc->vci : 0, |
2205 | entry->recv_vcc ? entry->recv_vcc-> | |
2206 | vci : 0); | |
2207 | found_entry = 1; | |
2208 | del_timer(&entry->timer); | |
2209 | entry->vcc = vcc; | |
2210 | entry->old_push = old_push; | |
2211 | if (entry->status == ESI_VC_PENDING) { | |
2212 | if (priv->maximum_unknown_frame_count | |
2213 | == 0) | |
2214 | entry->status = | |
2215 | ESI_FORWARD_DIRECT; | |
2216 | else { | |
2217 | entry->timestamp = jiffies; | |
2218 | entry->status = | |
2219 | ESI_FLUSH_PENDING; | |
1da177e4 | 2220 | #if 0 |
1fa9961d CW |
2221 | send_to_lecd(priv, l_flush_xmt, |
2222 | NULL, | |
2223 | entry->atm_addr, | |
2224 | NULL); | |
1da177e4 | 2225 | #endif |
1fa9961d CW |
2226 | } |
2227 | } else { | |
2228 | /* | |
2229 | * They were forming a connection | |
2230 | * to us, and we to them. Our | |
2231 | * ATM address is numerically lower | |
2232 | * than theirs, so we make connection | |
2233 | * we formed into default VCC (8.1.11). | |
2234 | * Connection they made gets torn | |
2235 | * down. This might confuse some | |
2236 | * clients. Can be changed if | |
2237 | * someone reports trouble... | |
2238 | */ | |
2239 | ; | |
2240 | } | |
2241 | } | |
2242 | } | |
2243 | } | |
2244 | if (found_entry) { | |
52240062 | 2245 | pr_debug("After vcc was added\n"); |
1fa9961d | 2246 | dump_arp_table(priv); |
1da177e4 | 2247 | goto out; |
1fa9961d CW |
2248 | } |
2249 | /* | |
2250 | * Not found, snatch address from first data packet that arrives | |
2251 | * from this vcc | |
2252 | */ | |
2253 | entry = make_entry(priv, bus_mac); | |
2254 | if (!entry) | |
1da177e4 | 2255 | goto out; |
1fa9961d CW |
2256 | entry->vcc = vcc; |
2257 | entry->old_push = old_push; | |
2258 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); | |
2259 | memset(entry->mac_addr, 0, ETH_ALEN); | |
2260 | entry->status = ESI_UNKNOWN; | |
d0732f64 | 2261 | hlist_add_head(&entry->next, &priv->lec_arp_empty_ones); |
1fa9961d CW |
2262 | entry->timer.expires = jiffies + priv->vcc_timeout_period; |
2263 | entry->timer.function = lec_arp_expire_vcc; | |
2264 | add_timer(&entry->timer); | |
52240062 | 2265 | pr_debug("After vcc was added\n"); |
1da177e4 LT |
2266 | dump_arp_table(priv); |
2267 | out: | |
2268 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2269 | } | |
2270 | ||
1fa9961d | 2271 | static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id) |
1da177e4 LT |
2272 | { |
2273 | unsigned long flags; | |
d0732f64 | 2274 | struct hlist_node *node; |
1fa9961d CW |
2275 | struct lec_arp_table *entry; |
2276 | int i; | |
1da177e4 | 2277 | |
52240062 | 2278 | pr_debug("LEC:lec_flush_complete %lx\n", tran_id); |
6656e3c4 | 2279 | restart: |
1fa9961d CW |
2280 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
2281 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
d0732f64 | 2282 | hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2283 | if (entry->flush_tran_id == tran_id |
2284 | && entry->status == ESI_FLUSH_PENDING) { | |
2285 | struct sk_buff *skb; | |
6656e3c4 | 2286 | struct atm_vcc *vcc = entry->vcc; |
1fa9961d | 2287 | |
6656e3c4 CW |
2288 | lec_arp_hold(entry); |
2289 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2290 | while ((skb = skb_dequeue(&entry->tx_wait)) != NULL) | |
162619e5 | 2291 | lec_send(vcc, skb); |
6656e3c4 | 2292 | entry->last_used = jiffies; |
1fa9961d | 2293 | entry->status = ESI_FORWARD_DIRECT; |
6656e3c4 | 2294 | lec_arp_put(entry); |
52240062 | 2295 | pr_debug("LEC_ARP: Flushed\n"); |
6656e3c4 | 2296 | goto restart; |
1fa9961d CW |
2297 | } |
2298 | } | |
2299 | } | |
1da177e4 | 2300 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d | 2301 | dump_arp_table(priv); |
1da177e4 LT |
2302 | } |
2303 | ||
2304 | static void | |
2305 | lec_set_flush_tran_id(struct lec_priv *priv, | |
61c33e01 | 2306 | const unsigned char *atm_addr, unsigned long tran_id) |
1da177e4 LT |
2307 | { |
2308 | unsigned long flags; | |
d0732f64 | 2309 | struct hlist_node *node; |
1fa9961d CW |
2310 | struct lec_arp_table *entry; |
2311 | int i; | |
1da177e4 LT |
2312 | |
2313 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d | 2314 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) |
d0732f64 | 2315 | hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2316 | if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) { |
2317 | entry->flush_tran_id = tran_id; | |
52240062 | 2318 | pr_debug("Set flush transaction id to %lx for %p\n", |
f7d57453 | 2319 | tran_id, entry); |
1fa9961d | 2320 | } |
d0732f64 | 2321 | } |
1da177e4 LT |
2322 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
2323 | } | |
2324 | ||
1fa9961d | 2325 | static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc) |
1da177e4 LT |
2326 | { |
2327 | unsigned long flags; | |
1fa9961d CW |
2328 | unsigned char mac_addr[] = { |
2329 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff | |
2330 | }; | |
2331 | struct lec_arp_table *to_add; | |
1da177e4 LT |
2332 | struct lec_vcc_priv *vpriv; |
2333 | int err = 0; | |
1fa9961d | 2334 | |
1da177e4 LT |
2335 | if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL))) |
2336 | return -ENOMEM; | |
2337 | vpriv->xoff = 0; | |
2338 | vpriv->old_pop = vcc->pop; | |
2339 | vcc->user_back = vpriv; | |
1fa9961d | 2340 | vcc->pop = lec_pop; |
1da177e4 | 2341 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d CW |
2342 | to_add = make_entry(priv, mac_addr); |
2343 | if (!to_add) { | |
1da177e4 LT |
2344 | vcc->pop = vpriv->old_pop; |
2345 | kfree(vpriv); | |
1fa9961d | 2346 | err = -ENOMEM; |
1da177e4 | 2347 | goto out; |
1fa9961d CW |
2348 | } |
2349 | memcpy(to_add->atm_addr, vcc->remote.sas_addr.prv, ATM_ESA_LEN); | |
2350 | to_add->status = ESI_FORWARD_DIRECT; | |
2351 | to_add->flags |= LEC_PERMANENT_FLAG; | |
2352 | to_add->vcc = vcc; | |
2353 | to_add->old_push = vcc->push; | |
2354 | vcc->push = lec_push; | |
2355 | priv->mcast_vcc = vcc; | |
2356 | lec_arp_add(priv, to_add); | |
1da177e4 LT |
2357 | out: |
2358 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1fa9961d | 2359 | return err; |
1da177e4 LT |
2360 | } |
2361 | ||
1fa9961d | 2362 | static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc) |
1da177e4 LT |
2363 | { |
2364 | unsigned long flags; | |
d0732f64 CW |
2365 | struct hlist_node *node, *next; |
2366 | struct lec_arp_table *entry; | |
1fa9961d | 2367 | int i; |
1da177e4 | 2368 | |
52240062 | 2369 | pr_debug("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n", vcc->vpi, vcc->vci); |
1fa9961d | 2370 | dump_arp_table(priv); |
d0732f64 | 2371 | |
1da177e4 | 2372 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d0732f64 | 2373 | |
1fa9961d | 2374 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
d0732f64 | 2375 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) { |
1fa9961d CW |
2376 | if (vcc == entry->vcc) { |
2377 | lec_arp_remove(priv, entry); | |
33a9c2d4 | 2378 | lec_arp_put(entry); |
1fa9961d CW |
2379 | if (priv->mcast_vcc == vcc) { |
2380 | priv->mcast_vcc = NULL; | |
2381 | } | |
2382 | } | |
2383 | } | |
2384 | } | |
2385 | ||
d0732f64 CW |
2386 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) { |
2387 | if (entry->vcc == vcc) { | |
1fa9961d CW |
2388 | lec_arp_clear_vccs(entry); |
2389 | del_timer(&entry->timer); | |
d0732f64 | 2390 | hlist_del(&entry->next); |
33a9c2d4 | 2391 | lec_arp_put(entry); |
1fa9961d | 2392 | } |
1fa9961d CW |
2393 | } |
2394 | ||
d0732f64 | 2395 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_no_forward, next) { |
1fa9961d CW |
2396 | if (entry->recv_vcc == vcc) { |
2397 | lec_arp_clear_vccs(entry); | |
2398 | del_timer(&entry->timer); | |
d0732f64 | 2399 | hlist_del(&entry->next); |
33a9c2d4 | 2400 | lec_arp_put(entry); |
1fa9961d | 2401 | } |
1fa9961d CW |
2402 | } |
2403 | ||
d0732f64 | 2404 | hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) { |
1fa9961d CW |
2405 | if (entry->recv_vcc == vcc) { |
2406 | lec_arp_clear_vccs(entry); | |
2407 | /* No timer, LANEv2 7.1.20 and 2.3.5.3 */ | |
d0732f64 | 2408 | hlist_del(&entry->next); |
33a9c2d4 | 2409 | lec_arp_put(entry); |
1fa9961d | 2410 | } |
1fa9961d | 2411 | } |
1da177e4 LT |
2412 | |
2413 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2414 | dump_arp_table(priv); | |
2415 | } | |
2416 | ||
2417 | static void | |
2418 | lec_arp_check_empties(struct lec_priv *priv, | |
1fa9961d | 2419 | struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 | 2420 | { |
1fa9961d | 2421 | unsigned long flags; |
d0732f64 CW |
2422 | struct hlist_node *node, *next; |
2423 | struct lec_arp_table *entry, *tmp; | |
1fa9961d CW |
2424 | struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data; |
2425 | unsigned char *src; | |
1da177e4 | 2426 | #ifdef CONFIG_TR |
1fa9961d | 2427 | struct lecdatahdr_8025 *tr_hdr = (struct lecdatahdr_8025 *)skb->data; |
1da177e4 | 2428 | |
1fa9961d CW |
2429 | if (priv->is_trdev) |
2430 | src = tr_hdr->h_source; | |
2431 | else | |
1da177e4 | 2432 | #endif |
1fa9961d | 2433 | src = hdr->h_source; |
1da177e4 LT |
2434 | |
2435 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
d0732f64 CW |
2436 | hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) { |
2437 | if (vcc == entry->vcc) { | |
2438 | del_timer(&entry->timer); | |
2439 | memcpy(entry->mac_addr, src, ETH_ALEN); | |
2440 | entry->status = ESI_FORWARD_DIRECT; | |
2441 | entry->last_used = jiffies; | |
2442 | /* We might have got an entry */ | |
2443 | if ((tmp = lec_arp_find(priv, src))) { | |
2444 | lec_arp_remove(priv, tmp); | |
33a9c2d4 | 2445 | lec_arp_put(tmp); |
d0732f64 CW |
2446 | } |
2447 | hlist_del(&entry->next); | |
2448 | lec_arp_add(priv, entry); | |
2449 | goto out; | |
1fa9961d | 2450 | } |
1fa9961d | 2451 | } |
52240062 | 2452 | pr_debug("LEC_ARP: Arp_check_empties: entry not found!\n"); |
1da177e4 LT |
2453 | out: |
2454 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2455 | } | |
1fa9961d | 2456 | |
1da177e4 | 2457 | MODULE_LICENSE("GPL"); |