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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 | ||
99824461 JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ |
8 | ||
5a0e3ad6 | 9 | #include <linux/slab.h> |
1da177e4 LT |
10 | #include <linux/kernel.h> |
11 | #include <linux/bitops.h> | |
4fc268d2 | 12 | #include <linux/capability.h> |
1da177e4 LT |
13 | |
14 | /* We are ethernet device */ | |
15 | #include <linux/if_ether.h> | |
16 | #include <linux/netdevice.h> | |
17 | #include <linux/etherdevice.h> | |
18 | #include <net/sock.h> | |
19 | #include <linux/skbuff.h> | |
20 | #include <linux/ip.h> | |
21 | #include <asm/byteorder.h> | |
c48192a7 | 22 | #include <linux/uaccess.h> |
1da177e4 LT |
23 | #include <net/arp.h> |
24 | #include <net/dst.h> | |
25 | #include <linux/proc_fs.h> | |
26 | #include <linux/spinlock.h> | |
1da177e4 LT |
27 | #include <linux/seq_file.h> |
28 | ||
1da177e4 LT |
29 | /* And atm device */ |
30 | #include <linux/atmdev.h> | |
31 | #include <linux/atmlec.h> | |
32 | ||
33 | /* Proxy LEC knows about bridging */ | |
34 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) | |
1da177e4 LT |
35 | #include "../bridge/br_private.h" |
36 | ||
d44f7746 | 37 | static unsigned char bridge_ula_lec[] = { 0x01, 0x80, 0xc2, 0x00, 0x00 }; |
1da177e4 LT |
38 | #endif |
39 | ||
40 | /* Modular too */ | |
41 | #include <linux/module.h> | |
42 | #include <linux/init.h> | |
43 | ||
44 | #include "lec.h" | |
45 | #include "lec_arpc.h" | |
46 | #include "resources.h" | |
47 | ||
d44f7746 CW |
48 | #define DUMP_PACKETS 0 /* |
49 | * 0 = None, | |
50 | * 1 = 30 first bytes | |
51 | * 2 = Whole packet | |
52 | */ | |
1da177e4 | 53 | |
d44f7746 CW |
54 | #define LEC_UNRES_QUE_LEN 8 /* |
55 | * number of tx packets to queue for a | |
56 | * single destination while waiting for SVC | |
57 | */ | |
1da177e4 LT |
58 | |
59 | static int lec_open(struct net_device *dev); | |
3c805a22 SH |
60 | static netdev_tx_t lec_start_xmit(struct sk_buff *skb, |
61 | struct net_device *dev); | |
1da177e4 | 62 | static int lec_close(struct net_device *dev); |
d44f7746 | 63 | static struct lec_arp_table *lec_arp_find(struct lec_priv *priv, |
61c33e01 | 64 | const unsigned char *mac_addr); |
1da177e4 | 65 | static int lec_arp_remove(struct lec_priv *priv, |
d44f7746 | 66 | struct lec_arp_table *to_remove); |
1da177e4 | 67 | /* LANE2 functions */ |
61c33e01 MBJ |
68 | static void lane2_associate_ind(struct net_device *dev, const u8 *mac_address, |
69 | const u8 *tlvs, u32 sizeoftlvs); | |
70 | static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force, | |
d44f7746 | 71 | u8 **tlvs, u32 *sizeoftlvs); |
61c33e01 MBJ |
72 | static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst, |
73 | const u8 *tlvs, u32 sizeoftlvs); | |
1da177e4 | 74 | |
61c33e01 | 75 | static int lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr, |
1da177e4 LT |
76 | unsigned long permanent); |
77 | static void lec_arp_check_empties(struct lec_priv *priv, | |
78 | struct atm_vcc *vcc, struct sk_buff *skb); | |
79 | static void lec_arp_destroy(struct lec_priv *priv); | |
80 | static void lec_arp_init(struct lec_priv *priv); | |
d44f7746 | 81 | static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv, |
61c33e01 | 82 | const unsigned char *mac_to_find, |
1da177e4 LT |
83 | int is_rdesc, |
84 | struct lec_arp_table **ret_entry); | |
61c33e01 | 85 | static void lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr, |
c48192a7 JP |
86 | const unsigned char *atm_addr, |
87 | unsigned long remoteflag, | |
1da177e4 LT |
88 | unsigned int targetless_le_arp); |
89 | static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id); | |
90 | static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc); | |
91 | static void lec_set_flush_tran_id(struct lec_priv *priv, | |
61c33e01 | 92 | const unsigned char *atm_addr, |
1da177e4 | 93 | unsigned long tran_id); |
c48192a7 JP |
94 | static void lec_vcc_added(struct lec_priv *priv, |
95 | const struct atmlec_ioc *ioc_data, | |
1da177e4 | 96 | struct atm_vcc *vcc, |
c48192a7 JP |
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 | ||
1da177e4 | 113 | static struct lane2_ops lane2_ops = { |
d44f7746 CW |
114 | lane2_resolve, /* resolve, spec 3.1.3 */ |
115 | lane2_associate_req, /* associate_req, spec 3.1.4 */ | |
116 | NULL /* associate indicator, spec 3.1.5 */ | |
1da177e4 LT |
117 | }; |
118 | ||
d44f7746 | 119 | static unsigned char bus_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
1da177e4 LT |
120 | |
121 | /* Device structures */ | |
122 | static struct net_device *dev_lec[MAX_LEC_ITF]; | |
123 | ||
124 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) | |
125 | static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev) | |
126 | { | |
d44f7746 CW |
127 | char *buff; |
128 | struct lec_priv *priv; | |
129 | ||
130 | /* | |
131 | * Check if this is a BPDU. If so, ask zeppelin to send | |
132 | * LE_TOPOLOGY_REQUEST with the same value of Topology Change bit | |
133 | * as the Config BPDU has | |
134 | */ | |
d44f7746 CW |
135 | buff = skb->data + skb->dev->hard_header_len; |
136 | if (*buff++ == 0x42 && *buff++ == 0x42 && *buff++ == 0x03) { | |
1da177e4 | 137 | struct sock *sk; |
d44f7746 CW |
138 | struct sk_buff *skb2; |
139 | struct atmlec_msg *mesg; | |
140 | ||
141 | skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); | |
142 | if (skb2 == NULL) | |
143 | return; | |
144 | skb2->len = sizeof(struct atmlec_msg); | |
145 | mesg = (struct atmlec_msg *)skb2->data; | |
146 | mesg->type = l_topology_change; | |
147 | buff += 4; | |
c48192a7 JP |
148 | mesg->content.normal.flag = *buff & 0x01; |
149 | /* 0x01 is topology change */ | |
d44f7746 | 150 | |
524ad0a7 | 151 | priv = netdev_priv(dev); |
d44f7746 | 152 | atm_force_charge(priv->lecd, skb2->truesize); |
1da177e4 | 153 | sk = sk_atm(priv->lecd); |
d44f7746 CW |
154 | skb_queue_tail(&sk->sk_receive_queue, skb2); |
155 | sk->sk_data_ready(sk, skb2->len); | |
156 | } | |
1da177e4 LT |
157 | } |
158 | #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */ | |
159 | ||
1da177e4 LT |
160 | /* |
161 | * Open/initialize the netdevice. This is called (in the current kernel) | |
162 | * sometime after booting when the 'ifconfig' program is run. | |
163 | * | |
164 | * This routine should set everything up anew at each open, even | |
165 | * registers that "should" only need to be set once at boot, so that | |
166 | * there is non-reboot way to recover if something goes wrong. | |
167 | */ | |
168 | ||
d44f7746 | 169 | static int lec_open(struct net_device *dev) |
1da177e4 | 170 | { |
1da177e4 | 171 | netif_start_queue(dev); |
d44f7746 CW |
172 | |
173 | return 0; | |
1da177e4 LT |
174 | } |
175 | ||
162619e5 SH |
176 | static void |
177 | lec_send(struct atm_vcc *vcc, struct sk_buff *skb) | |
1da177e4 | 178 | { |
162619e5 SH |
179 | struct net_device *dev = skb->dev; |
180 | ||
1da177e4 LT |
181 | ATM_SKB(skb)->vcc = vcc; |
182 | ATM_SKB(skb)->atm_options = vcc->atm_options; | |
183 | ||
184 | atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); | |
185 | if (vcc->send(vcc, skb) < 0) { | |
162619e5 | 186 | dev->stats.tx_dropped++; |
1da177e4 LT |
187 | return; |
188 | } | |
189 | ||
162619e5 SH |
190 | dev->stats.tx_packets++; |
191 | dev->stats.tx_bytes += skb->len; | |
1da177e4 LT |
192 | } |
193 | ||
d44f7746 | 194 | static void lec_tx_timeout(struct net_device *dev) |
1da177e4 | 195 | { |
99824461 | 196 | pr_info("%s\n", dev->name); |
1da177e4 LT |
197 | dev->trans_start = jiffies; |
198 | netif_wake_queue(dev); | |
199 | } | |
200 | ||
3c805a22 SH |
201 | static netdev_tx_t lec_start_xmit(struct sk_buff *skb, |
202 | struct net_device *dev) | |
1da177e4 | 203 | { |
d44f7746 | 204 | struct sk_buff *skb2; |
524ad0a7 | 205 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
206 | struct lecdatahdr_8023 *lec_h; |
207 | struct atm_vcc *vcc; | |
1da177e4 | 208 | struct lec_arp_table *entry; |
d44f7746 | 209 | unsigned char *dst; |
1da177e4 | 210 | int min_frame_size; |
d44f7746 | 211 | int is_rdesc; |
d44f7746 | 212 | |
99824461 | 213 | pr_debug("called\n"); |
d44f7746 | 214 | if (!priv->lecd) { |
c48192a7 | 215 | pr_info("%s:No lecd attached\n", dev->name); |
162619e5 | 216 | dev->stats.tx_errors++; |
d44f7746 | 217 | netif_stop_queue(dev); |
81fbbf60 PM |
218 | kfree_skb(skb); |
219 | return NETDEV_TX_OK; | |
d44f7746 CW |
220 | } |
221 | ||
52240062 | 222 | pr_debug("skbuff head:%lx data:%lx tail:%lx end:%lx\n", |
99824461 JP |
223 | (long)skb->head, (long)skb->data, (long)skb_tail_pointer(skb), |
224 | (long)skb_end_pointer(skb)); | |
1da177e4 | 225 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) |
d44f7746 CW |
226 | if (memcmp(skb->data, bridge_ula_lec, sizeof(bridge_ula_lec)) == 0) |
227 | lec_handle_bridge(skb, dev); | |
1da177e4 LT |
228 | #endif |
229 | ||
d44f7746 CW |
230 | /* Make sure we have room for lec_id */ |
231 | if (skb_headroom(skb) < 2) { | |
99824461 | 232 | pr_debug("reallocating skb\n"); |
d44f7746 CW |
233 | skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN); |
234 | kfree_skb(skb); | |
235 | if (skb2 == NULL) | |
6ed10654 | 236 | return NETDEV_TX_OK; |
d44f7746 CW |
237 | skb = skb2; |
238 | } | |
239 | skb_push(skb, 2); | |
1da177e4 | 240 | |
60eea6cf | 241 | /* Put le header to place */ |
d44f7746 CW |
242 | lec_h = (struct lecdatahdr_8023 *)skb->data; |
243 | lec_h->le_header = htons(priv->lecid); | |
1da177e4 | 244 | |
1da177e4 | 245 | #if DUMP_PACKETS >= 2 |
c48192a7 | 246 | #define MAX_DUMP_SKB 99 |
1da177e4 | 247 | #elif DUMP_PACKETS >= 1 |
c48192a7 JP |
248 | #define MAX_DUMP_SKB 30 |
249 | #endif | |
250 | #if DUMP_PACKETS >= 1 | |
251 | printk(KERN_DEBUG "%s: send datalen:%ld lecid:%4.4x\n", | |
252 | dev->name, skb->len, priv->lecid); | |
253 | print_hex_dump(KERN_DEBUG, "", DUMP_OFFSET, 16, 1, | |
254 | skb->data, min(skb->len, MAX_DUMP_SKB), true); | |
1da177e4 | 255 | #endif /* DUMP_PACKETS >= 1 */ |
1da177e4 | 256 | |
d44f7746 | 257 | /* Minimum ethernet-frame size */ |
60eea6cf | 258 | min_frame_size = LEC_MINIMUM_8023_SIZE; |
d44f7746 CW |
259 | if (skb->len < min_frame_size) { |
260 | if ((skb->len + skb_tailroom(skb)) < min_frame_size) { | |
261 | skb2 = skb_copy_expand(skb, 0, | |
262 | min_frame_size - skb->truesize, | |
263 | GFP_ATOMIC); | |
264 | dev_kfree_skb(skb); | |
265 | if (skb2 == NULL) { | |
162619e5 | 266 | dev->stats.tx_dropped++; |
6ed10654 | 267 | return NETDEV_TX_OK; |
d44f7746 CW |
268 | } |
269 | skb = skb2; | |
270 | } | |
1da177e4 | 271 | skb_put(skb, min_frame_size - skb->len); |
d44f7746 CW |
272 | } |
273 | ||
274 | /* Send to right vcc */ | |
275 | is_rdesc = 0; | |
276 | dst = lec_h->h_dest; | |
d44f7746 CW |
277 | entry = NULL; |
278 | vcc = lec_arp_resolve(priv, dst, is_rdesc, &entry); | |
99824461 JP |
279 | pr_debug("%s:vcc:%p vcc_flags:%lx, entry:%p\n", |
280 | dev->name, vcc, vcc ? vcc->flags : 0, entry); | |
d44f7746 CW |
281 | if (!vcc || !test_bit(ATM_VF_READY, &vcc->flags)) { |
282 | if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) { | |
99824461 JP |
283 | pr_debug("%s:queuing packet, MAC address %pM\n", |
284 | dev->name, lec_h->h_dest); | |
d44f7746 CW |
285 | skb_queue_tail(&entry->tx_wait, skb); |
286 | } else { | |
99824461 JP |
287 | pr_debug("%s:tx queue full or no arp entry, dropping, MAC address: %pM\n", |
288 | dev->name, lec_h->h_dest); | |
162619e5 | 289 | dev->stats.tx_dropped++; |
d44f7746 CW |
290 | dev_kfree_skb(skb); |
291 | } | |
6656e3c4 | 292 | goto out; |
d44f7746 CW |
293 | } |
294 | #if DUMP_PACKETS > 0 | |
c48192a7 JP |
295 | printk(KERN_DEBUG "%s:sending to vpi:%d vci:%d\n", |
296 | dev->name, vcc->vpi, vcc->vci); | |
1da177e4 | 297 | #endif /* DUMP_PACKETS > 0 */ |
d44f7746 CW |
298 | |
299 | while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) { | |
99824461 | 300 | pr_debug("emptying tx queue, MAC address %pM\n", lec_h->h_dest); |
162619e5 | 301 | lec_send(vcc, skb2); |
d44f7746 | 302 | } |
1da177e4 | 303 | |
162619e5 | 304 | lec_send(vcc, skb); |
1da177e4 LT |
305 | |
306 | if (!atm_may_send(vcc, 0)) { | |
307 | struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); | |
308 | ||
309 | vpriv->xoff = 1; | |
310 | netif_stop_queue(dev); | |
311 | ||
312 | /* | |
313 | * vcc->pop() might have occurred in between, making | |
314 | * the vcc usuable again. Since xmit is serialized, | |
315 | * this is the only situation we have to re-test. | |
316 | */ | |
317 | ||
318 | if (atm_may_send(vcc, 0)) | |
319 | netif_wake_queue(dev); | |
320 | } | |
321 | ||
6656e3c4 CW |
322 | out: |
323 | if (entry) | |
324 | lec_arp_put(entry); | |
1da177e4 | 325 | dev->trans_start = jiffies; |
6ed10654 | 326 | return NETDEV_TX_OK; |
1da177e4 LT |
327 | } |
328 | ||
329 | /* The inverse routine to net_open(). */ | |
d44f7746 | 330 | static int lec_close(struct net_device *dev) |
1da177e4 | 331 | { |
d44f7746 CW |
332 | netif_stop_queue(dev); |
333 | return 0; | |
1da177e4 LT |
334 | } |
335 | ||
d44f7746 | 336 | static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 LT |
337 | { |
338 | unsigned long flags; | |
d44f7746 | 339 | struct net_device *dev = (struct net_device *)vcc->proto_data; |
524ad0a7 | 340 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
341 | struct atmlec_msg *mesg; |
342 | struct lec_arp_table *entry; | |
343 | int i; | |
344 | char *tmp; /* FIXME */ | |
1da177e4 LT |
345 | |
346 | atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); | |
d44f7746 CW |
347 | mesg = (struct atmlec_msg *)skb->data; |
348 | tmp = skb->data; | |
349 | tmp += sizeof(struct atmlec_msg); | |
52240062 | 350 | pr_debug("%s: msg from zeppelin:%d\n", dev->name, mesg->type); |
d44f7746 CW |
351 | switch (mesg->type) { |
352 | case l_set_mac_addr: | |
c48192a7 | 353 | for (i = 0; i < 6; i++) |
d44f7746 | 354 | dev->dev_addr[i] = mesg->content.normal.mac_addr[i]; |
d44f7746 CW |
355 | break; |
356 | case l_del_mac_addr: | |
c48192a7 | 357 | for (i = 0; i < 6; i++) |
d44f7746 | 358 | dev->dev_addr[i] = 0; |
d44f7746 CW |
359 | break; |
360 | case l_addr_delete: | |
361 | lec_addr_delete(priv, mesg->content.normal.atm_addr, | |
362 | mesg->content.normal.flag); | |
363 | break; | |
364 | case l_topology_change: | |
365 | priv->topology_change = mesg->content.normal.flag; | |
366 | break; | |
367 | case l_flush_complete: | |
368 | lec_flush_complete(priv, mesg->content.normal.flag); | |
369 | break; | |
370 | case l_narp_req: /* LANE2: see 7.1.35 in the lane2 spec */ | |
1da177e4 | 371 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d44f7746 CW |
372 | entry = lec_arp_find(priv, mesg->content.normal.mac_addr); |
373 | lec_arp_remove(priv, entry); | |
1da177e4 LT |
374 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
375 | ||
d44f7746 CW |
376 | if (mesg->content.normal.no_source_le_narp) |
377 | break; | |
378 | /* FALL THROUGH */ | |
379 | case l_arp_update: | |
380 | lec_arp_update(priv, mesg->content.normal.mac_addr, | |
381 | mesg->content.normal.atm_addr, | |
382 | mesg->content.normal.flag, | |
383 | mesg->content.normal.targetless_le_arp); | |
99824461 | 384 | pr_debug("in l_arp_update\n"); |
d44f7746 | 385 | if (mesg->sizeoftlvs != 0) { /* LANE2 3.1.5 */ |
99824461 JP |
386 | pr_debug("LANE2 3.1.5, got tlvs, size %d\n", |
387 | mesg->sizeoftlvs); | |
d44f7746 CW |
388 | lane2_associate_ind(dev, mesg->content.normal.mac_addr, |
389 | tmp, mesg->sizeoftlvs); | |
390 | } | |
391 | break; | |
392 | case l_config: | |
393 | priv->maximum_unknown_frame_count = | |
394 | mesg->content.config.maximum_unknown_frame_count; | |
395 | priv->max_unknown_frame_time = | |
396 | (mesg->content.config.max_unknown_frame_time * HZ); | |
397 | priv->max_retry_count = mesg->content.config.max_retry_count; | |
398 | priv->aging_time = (mesg->content.config.aging_time * HZ); | |
399 | priv->forward_delay_time = | |
400 | (mesg->content.config.forward_delay_time * HZ); | |
401 | priv->arp_response_time = | |
402 | (mesg->content.config.arp_response_time * HZ); | |
403 | priv->flush_timeout = (mesg->content.config.flush_timeout * HZ); | |
404 | priv->path_switching_delay = | |
405 | (mesg->content.config.path_switching_delay * HZ); | |
c48192a7 JP |
406 | priv->lane_version = mesg->content.config.lane_version; |
407 | /* LANE2 */ | |
1da177e4 LT |
408 | priv->lane2_ops = NULL; |
409 | if (priv->lane_version > 1) | |
410 | priv->lane2_ops = &lane2_ops; | |
1f1900f9 | 411 | if (dev_set_mtu(dev, mesg->content.config.mtu)) |
c48192a7 JP |
412 | pr_info("%s: change_mtu to %d failed\n", |
413 | dev->name, mesg->content.config.mtu); | |
1da177e4 | 414 | priv->is_proxy = mesg->content.config.is_proxy; |
d44f7746 CW |
415 | break; |
416 | case l_flush_tran_id: | |
417 | lec_set_flush_tran_id(priv, mesg->content.normal.atm_addr, | |
418 | mesg->content.normal.flag); | |
419 | break; | |
420 | case l_set_lecid: | |
421 | priv->lecid = | |
422 | (unsigned short)(0xffff & mesg->content.normal.flag); | |
423 | break; | |
424 | case l_should_bridge: | |
1da177e4 | 425 | #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) |
b4c84ec0 JP |
426 | { |
427 | pr_debug("%s: bridge zeppelin asks about %pM\n", | |
428 | dev->name, mesg->content.proxy.mac_addr); | |
d44f7746 | 429 | |
b4c84ec0 JP |
430 | if (br_fdb_test_addr_hook == NULL) |
431 | break; | |
d44f7746 | 432 | |
b4c84ec0 JP |
433 | if (br_fdb_test_addr_hook(dev, mesg->content.proxy.mac_addr)) { |
434 | /* hit from bridge table, send LE_ARP_RESPONSE */ | |
435 | struct sk_buff *skb2; | |
436 | struct sock *sk; | |
437 | ||
438 | pr_debug("%s: entry found, responding to zeppelin\n", | |
439 | dev->name); | |
440 | skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); | |
441 | if (skb2 == NULL) | |
442 | break; | |
443 | skb2->len = sizeof(struct atmlec_msg); | |
444 | skb_copy_to_linear_data(skb2, mesg, sizeof(*mesg)); | |
445 | atm_force_charge(priv->lecd, skb2->truesize); | |
446 | sk = sk_atm(priv->lecd); | |
447 | skb_queue_tail(&sk->sk_receive_queue, skb2); | |
448 | sk->sk_data_ready(sk, skb2->len); | |
d44f7746 | 449 | } |
b4c84ec0 | 450 | } |
1da177e4 | 451 | #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */ |
d44f7746 CW |
452 | break; |
453 | default: | |
c48192a7 | 454 | pr_info("%s: Unknown message type %d\n", dev->name, mesg->type); |
d44f7746 CW |
455 | dev_kfree_skb(skb); |
456 | return -EINVAL; | |
457 | } | |
458 | dev_kfree_skb(skb); | |
459 | return 0; | |
1da177e4 LT |
460 | } |
461 | ||
d44f7746 | 462 | static void lec_atm_close(struct atm_vcc *vcc) |
1da177e4 | 463 | { |
d44f7746 CW |
464 | struct sk_buff *skb; |
465 | struct net_device *dev = (struct net_device *)vcc->proto_data; | |
524ad0a7 | 466 | struct lec_priv *priv = netdev_priv(dev); |
1da177e4 | 467 | |
d44f7746 CW |
468 | priv->lecd = NULL; |
469 | /* Do something needful? */ | |
1da177e4 | 470 | |
d44f7746 CW |
471 | netif_stop_queue(dev); |
472 | lec_arp_destroy(priv); | |
1da177e4 | 473 | |
d44f7746 | 474 | if (skb_peek(&sk_atm(vcc)->sk_receive_queue)) |
c48192a7 | 475 | pr_info("%s closing with messages pending\n", dev->name); |
b4c84ec0 | 476 | while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue))) { |
d44f7746 | 477 | atm_return(vcc, skb->truesize); |
1da177e4 | 478 | dev_kfree_skb(skb); |
d44f7746 CW |
479 | } |
480 | ||
c48192a7 | 481 | pr_info("%s: Shut down!\n", dev->name); |
d44f7746 | 482 | module_put(THIS_MODULE); |
1da177e4 LT |
483 | } |
484 | ||
485 | static struct atmdev_ops lecdev_ops = { | |
d44f7746 CW |
486 | .close = lec_atm_close, |
487 | .send = lec_atm_send | |
1da177e4 LT |
488 | }; |
489 | ||
490 | static struct atm_dev lecatm_dev = { | |
d44f7746 CW |
491 | .ops = &lecdev_ops, |
492 | .type = "lec", | |
493 | .number = 999, /* dummy device number */ | |
4ef8d0ae | 494 | .lock = __SPIN_LOCK_UNLOCKED(lecatm_dev.lock) |
1da177e4 LT |
495 | }; |
496 | ||
497 | /* | |
498 | * LANE2: new argument struct sk_buff *data contains | |
499 | * the LE_ARP based TLVs introduced in the LANE2 spec | |
500 | */ | |
d44f7746 CW |
501 | static int |
502 | send_to_lecd(struct lec_priv *priv, atmlec_msg_type type, | |
61c33e01 | 503 | const unsigned char *mac_addr, const unsigned char *atm_addr, |
d44f7746 | 504 | struct sk_buff *data) |
1da177e4 LT |
505 | { |
506 | struct sock *sk; | |
507 | struct sk_buff *skb; | |
508 | struct atmlec_msg *mesg; | |
509 | ||
c48192a7 | 510 | if (!priv || !priv->lecd) |
1da177e4 | 511 | return -1; |
1da177e4 LT |
512 | skb = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); |
513 | if (!skb) | |
514 | return -1; | |
515 | skb->len = sizeof(struct atmlec_msg); | |
516 | mesg = (struct atmlec_msg *)skb->data; | |
d44f7746 | 517 | memset(mesg, 0, sizeof(struct atmlec_msg)); |
1da177e4 | 518 | mesg->type = type; |
d44f7746 CW |
519 | if (data != NULL) |
520 | mesg->sizeoftlvs = data->len; | |
1da177e4 LT |
521 | if (mac_addr) |
522 | memcpy(&mesg->content.normal.mac_addr, mac_addr, ETH_ALEN); | |
d44f7746 CW |
523 | else |
524 | mesg->content.normal.targetless_le_arp = 1; | |
1da177e4 LT |
525 | if (atm_addr) |
526 | memcpy(&mesg->content.normal.atm_addr, atm_addr, ATM_ESA_LEN); | |
527 | ||
d44f7746 | 528 | atm_force_charge(priv->lecd, skb->truesize); |
1da177e4 LT |
529 | sk = sk_atm(priv->lecd); |
530 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
d44f7746 | 531 | sk->sk_data_ready(sk, skb->len); |
1da177e4 | 532 | |
d44f7746 | 533 | if (data != NULL) { |
99824461 | 534 | pr_debug("about to send %d bytes of data\n", data->len); |
d44f7746 CW |
535 | atm_force_charge(priv->lecd, data->truesize); |
536 | skb_queue_tail(&sk->sk_receive_queue, data); | |
537 | sk->sk_data_ready(sk, skb->len); | |
538 | } | |
1da177e4 | 539 | |
d44f7746 | 540 | return 0; |
1da177e4 LT |
541 | } |
542 | ||
543 | /* shamelessly stolen from drivers/net/net_init.c */ | |
544 | static int lec_change_mtu(struct net_device *dev, int new_mtu) | |
545 | { | |
d44f7746 CW |
546 | if ((new_mtu < 68) || (new_mtu > 18190)) |
547 | return -EINVAL; | |
548 | dev->mtu = new_mtu; | |
549 | return 0; | |
1da177e4 LT |
550 | } |
551 | ||
552 | static void lec_set_multicast_list(struct net_device *dev) | |
553 | { | |
d44f7746 CW |
554 | /* |
555 | * by default, all multicast frames arrive over the bus. | |
556 | * eventually support selective multicast service | |
557 | */ | |
1da177e4 LT |
558 | } |
559 | ||
004b3225 SH |
560 | static const struct net_device_ops lec_netdev_ops = { |
561 | .ndo_open = lec_open, | |
562 | .ndo_stop = lec_close, | |
563 | .ndo_start_xmit = lec_start_xmit, | |
564 | .ndo_change_mtu = lec_change_mtu, | |
565 | .ndo_tx_timeout = lec_tx_timeout, | |
afc4b13d | 566 | .ndo_set_rx_mode = lec_set_multicast_list, |
004b3225 SH |
567 | }; |
568 | ||
61c33e01 | 569 | static const unsigned char lec_ctrl_magic[] = { |
d44f7746 CW |
570 | 0xff, |
571 | 0x00, | |
572 | 0x01, | |
573 | 0x01 | |
574 | }; | |
1da177e4 | 575 | |
4a7097fc ST |
576 | #define LEC_DATA_DIRECT_8023 2 |
577 | #define LEC_DATA_DIRECT_8025 3 | |
578 | ||
579 | static int lec_is_data_direct(struct atm_vcc *vcc) | |
d44f7746 | 580 | { |
4a7097fc ST |
581 | return ((vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8023) || |
582 | (vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8025)); | |
d44f7746 | 583 | } |
4a7097fc | 584 | |
d44f7746 | 585 | static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 | 586 | { |
4a7097fc | 587 | unsigned long flags; |
d44f7746 | 588 | struct net_device *dev = (struct net_device *)vcc->proto_data; |
524ad0a7 | 589 | struct lec_priv *priv = netdev_priv(dev); |
1da177e4 | 590 | |
c48192a7 | 591 | #if DUMP_PACKETS > 0 |
99824461 JP |
592 | printk(KERN_DEBUG "%s: vcc vpi:%d vci:%d\n", |
593 | dev->name, vcc->vpi, vcc->vci); | |
1da177e4 | 594 | #endif |
d44f7746 | 595 | if (!skb) { |
52240062 | 596 | pr_debug("%s: null skb\n", dev->name); |
d44f7746 CW |
597 | lec_vcc_close(priv, vcc); |
598 | return; | |
599 | } | |
1da177e4 | 600 | #if DUMP_PACKETS >= 2 |
99824461 | 601 | #define MAX_SKB_DUMP 99 |
1da177e4 | 602 | #elif DUMP_PACKETS >= 1 |
99824461 JP |
603 | #define MAX_SKB_DUMP 30 |
604 | #endif | |
605 | #if DUMP_PACKETS > 0 | |
606 | printk(KERN_DEBUG "%s: rcv datalen:%ld lecid:%4.4x\n", | |
607 | dev->name, skb->len, priv->lecid); | |
608 | print_hex_dump(KERN_DEBUG, "", DUMP_OFFSET, 16, 1, | |
609 | skb->data, min(MAX_SKB_DUMP, skb->len), true); | |
1da177e4 | 610 | #endif /* DUMP_PACKETS > 0 */ |
99824461 JP |
611 | if (memcmp(skb->data, lec_ctrl_magic, 4) == 0) { |
612 | /* Control frame, to daemon */ | |
1da177e4 LT |
613 | struct sock *sk = sk_atm(vcc); |
614 | ||
52240062 | 615 | pr_debug("%s: To daemon\n", dev->name); |
d44f7746 CW |
616 | skb_queue_tail(&sk->sk_receive_queue, skb); |
617 | sk->sk_data_ready(sk, skb->len); | |
618 | } else { /* Data frame, queue to protocol handlers */ | |
4a7097fc | 619 | struct lec_arp_table *entry; |
d44f7746 CW |
620 | unsigned char *src, *dst; |
621 | ||
622 | atm_return(vcc, skb->truesize); | |
30d492da | 623 | if (*(__be16 *) skb->data == htons(priv->lecid) || |
d44f7746 CW |
624 | !priv->lecd || !(dev->flags & IFF_UP)) { |
625 | /* | |
626 | * Probably looping back, or if lecd is missing, | |
627 | * lecd has gone down | |
628 | */ | |
52240062 | 629 | pr_debug("Ignoring frame...\n"); |
d44f7746 CW |
630 | dev_kfree_skb(skb); |
631 | return; | |
632 | } | |
60eea6cf | 633 | dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest; |
4a7097fc | 634 | |
d44f7746 CW |
635 | /* |
636 | * If this is a Data Direct VCC, and the VCC does not match | |
4a7097fc ST |
637 | * the LE_ARP cache entry, delete the LE_ARP cache entry. |
638 | */ | |
639 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
640 | if (lec_is_data_direct(vcc)) { | |
60eea6cf | 641 | src = ((struct lecdatahdr_8023 *)skb->data)->h_source; |
4a7097fc ST |
642 | entry = lec_arp_find(priv, src); |
643 | if (entry && entry->vcc != vcc) { | |
644 | lec_arp_remove(priv, entry); | |
33a9c2d4 | 645 | lec_arp_put(entry); |
4a7097fc ST |
646 | } |
647 | } | |
648 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1da177e4 | 649 | |
d44f7746 CW |
650 | if (!(dst[0] & 0x01) && /* Never filter Multi/Broadcast */ |
651 | !priv->is_proxy && /* Proxy wants all the packets */ | |
1da177e4 | 652 | memcmp(dst, dev->dev_addr, dev->addr_len)) { |
d44f7746 CW |
653 | dev_kfree_skb(skb); |
654 | return; | |
655 | } | |
c48192a7 | 656 | if (!hlist_empty(&priv->lec_arp_empty_ones)) |
d44f7746 | 657 | lec_arp_check_empties(priv, vcc, skb); |
d44f7746 | 658 | skb_pull(skb, 2); /* skip lec_id */ |
60eea6cf | 659 | skb->protocol = eth_type_trans(skb, dev); |
162619e5 SH |
660 | dev->stats.rx_packets++; |
661 | dev->stats.rx_bytes += skb->len; | |
d44f7746 CW |
662 | memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data)); |
663 | netif_rx(skb); | |
664 | } | |
1da177e4 LT |
665 | } |
666 | ||
d44f7746 | 667 | static void lec_pop(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 LT |
668 | { |
669 | struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); | |
670 | struct net_device *dev = skb->dev; | |
671 | ||
672 | if (vpriv == NULL) { | |
99824461 | 673 | pr_info("vpriv = NULL!?!?!?\n"); |
1da177e4 LT |
674 | return; |
675 | } | |
676 | ||
677 | vpriv->old_pop(vcc, skb); | |
678 | ||
679 | if (vpriv->xoff && atm_may_send(vcc, 0)) { | |
680 | vpriv->xoff = 0; | |
681 | if (netif_running(dev) && netif_queue_stopped(dev)) | |
682 | netif_wake_queue(dev); | |
683 | } | |
684 | } | |
685 | ||
d44f7746 | 686 | static int lec_vcc_attach(struct atm_vcc *vcc, void __user *arg) |
1da177e4 LT |
687 | { |
688 | struct lec_vcc_priv *vpriv; | |
d44f7746 CW |
689 | int bytes_left; |
690 | struct atmlec_ioc ioc_data; | |
691 | ||
692 | /* Lecd must be up in this case */ | |
693 | bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmlec_ioc)); | |
99824461 JP |
694 | if (bytes_left != 0) |
695 | pr_info("copy from user failed for %d bytes\n", bytes_left); | |
d44f7746 CW |
696 | if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF || |
697 | !dev_lec[ioc_data.dev_num]) | |
698 | return -EINVAL; | |
c48192a7 JP |
699 | vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL); |
700 | if (!vpriv) | |
1da177e4 LT |
701 | return -ENOMEM; |
702 | vpriv->xoff = 0; | |
703 | vpriv->old_pop = vcc->pop; | |
704 | vcc->user_back = vpriv; | |
705 | vcc->pop = lec_pop; | |
524ad0a7 | 706 | lec_vcc_added(netdev_priv(dev_lec[ioc_data.dev_num]), |
d44f7746 CW |
707 | &ioc_data, vcc, vcc->push); |
708 | vcc->proto_data = dev_lec[ioc_data.dev_num]; | |
709 | vcc->push = lec_push; | |
710 | return 0; | |
1da177e4 LT |
711 | } |
712 | ||
d44f7746 | 713 | static int lec_mcast_attach(struct atm_vcc *vcc, int arg) |
1da177e4 | 714 | { |
d44f7746 CW |
715 | if (arg < 0 || arg >= MAX_LEC_ITF || !dev_lec[arg]) |
716 | return -EINVAL; | |
717 | vcc->proto_data = dev_lec[arg]; | |
37d66800 | 718 | return lec_mcast_make(netdev_priv(dev_lec[arg]), vcc); |
1da177e4 LT |
719 | } |
720 | ||
721 | /* Initialize device. */ | |
d44f7746 CW |
722 | static int lecd_attach(struct atm_vcc *vcc, int arg) |
723 | { | |
724 | int i; | |
725 | struct lec_priv *priv; | |
726 | ||
727 | if (arg < 0) | |
728 | i = 0; | |
729 | else | |
730 | i = arg; | |
d44f7746 CW |
731 | if (arg >= MAX_LEC_ITF) |
732 | return -EINVAL; | |
d44f7746 | 733 | if (!dev_lec[i]) { |
60eea6cf | 734 | int size; |
1da177e4 | 735 | |
d44f7746 | 736 | size = sizeof(struct lec_priv); |
60eea6cf | 737 | dev_lec[i] = alloc_etherdev(size); |
d44f7746 CW |
738 | if (!dev_lec[i]) |
739 | return -ENOMEM; | |
eb044588 | 740 | dev_lec[i]->netdev_ops = &lec_netdev_ops; |
d44f7746 CW |
741 | snprintf(dev_lec[i]->name, IFNAMSIZ, "lec%d", i); |
742 | if (register_netdev(dev_lec[i])) { | |
743 | free_netdev(dev_lec[i]); | |
744 | return -EINVAL; | |
745 | } | |
746 | ||
524ad0a7 | 747 | priv = netdev_priv(dev_lec[i]); |
d44f7746 | 748 | } else { |
524ad0a7 | 749 | priv = netdev_priv(dev_lec[i]); |
d44f7746 CW |
750 | if (priv->lecd) |
751 | return -EADDRINUSE; | |
752 | } | |
753 | lec_arp_init(priv); | |
754 | priv->itfnum = i; /* LANE2 addition */ | |
755 | priv->lecd = vcc; | |
756 | vcc->dev = &lecatm_dev; | |
757 | vcc_insert_socket(sk_atm(vcc)); | |
758 | ||
759 | vcc->proto_data = dev_lec[i]; | |
760 | set_bit(ATM_VF_META, &vcc->flags); | |
761 | set_bit(ATM_VF_READY, &vcc->flags); | |
762 | ||
763 | /* Set default values to these variables */ | |
764 | priv->maximum_unknown_frame_count = 1; | |
765 | priv->max_unknown_frame_time = (1 * HZ); | |
766 | priv->vcc_timeout_period = (1200 * HZ); | |
767 | priv->max_retry_count = 1; | |
768 | priv->aging_time = (300 * HZ); | |
769 | priv->forward_delay_time = (15 * HZ); | |
770 | priv->topology_change = 0; | |
771 | priv->arp_response_time = (1 * HZ); | |
772 | priv->flush_timeout = (4 * HZ); | |
773 | priv->path_switching_delay = (6 * HZ); | |
774 | ||
c48192a7 | 775 | if (dev_lec[i]->flags & IFF_UP) |
d44f7746 | 776 | netif_start_queue(dev_lec[i]); |
d44f7746 CW |
777 | __module_get(THIS_MODULE); |
778 | return i; | |
1da177e4 LT |
779 | } |
780 | ||
781 | #ifdef CONFIG_PROC_FS | |
36cbd3dc | 782 | static const char *lec_arp_get_status_string(unsigned char status) |
1da177e4 | 783 | { |
36cbd3dc | 784 | static const char *const lec_arp_status_string[] = { |
1da177e4 LT |
785 | "ESI_UNKNOWN ", |
786 | "ESI_ARP_PENDING ", | |
787 | "ESI_VC_PENDING ", | |
788 | "<Undefined> ", | |
789 | "ESI_FLUSH_PENDING ", | |
790 | "ESI_FORWARD_DIRECT" | |
791 | }; | |
792 | ||
793 | if (status > ESI_FORWARD_DIRECT) | |
794 | status = 3; /* ESI_UNDEFINED */ | |
795 | return lec_arp_status_string[status]; | |
796 | } | |
797 | ||
798 | static void lec_info(struct seq_file *seq, struct lec_arp_table *entry) | |
799 | { | |
800 | int i; | |
801 | ||
802 | for (i = 0; i < ETH_ALEN; i++) | |
803 | seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff); | |
804 | seq_printf(seq, " "); | |
805 | for (i = 0; i < ATM_ESA_LEN; i++) | |
806 | seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff); | |
807 | seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status), | |
808 | entry->flags & 0xffff); | |
809 | if (entry->vcc) | |
810 | seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci); | |
811 | else | |
d44f7746 | 812 | seq_printf(seq, " "); |
1da177e4 LT |
813 | if (entry->recv_vcc) { |
814 | seq_printf(seq, " %3d %3d", entry->recv_vcc->vpi, | |
815 | entry->recv_vcc->vci); | |
d44f7746 CW |
816 | } |
817 | seq_putc(seq, '\n'); | |
1da177e4 LT |
818 | } |
819 | ||
1da177e4 LT |
820 | struct lec_state { |
821 | unsigned long flags; | |
822 | struct lec_priv *locked; | |
d0732f64 | 823 | struct hlist_node *node; |
1da177e4 LT |
824 | struct net_device *dev; |
825 | int itf; | |
826 | int arp_table; | |
827 | int misc_table; | |
828 | }; | |
829 | ||
d0732f64 | 830 | static void *lec_tbl_walk(struct lec_state *state, struct hlist_head *tbl, |
1da177e4 LT |
831 | loff_t *l) |
832 | { | |
d0732f64 CW |
833 | struct hlist_node *e = state->node; |
834 | struct lec_arp_table *tmp; | |
1da177e4 LT |
835 | |
836 | if (!e) | |
d0732f64 | 837 | e = tbl->first; |
2e1e9848 | 838 | if (e == SEQ_START_TOKEN) { |
d0732f64 | 839 | e = tbl->first; |
1da177e4 LT |
840 | --*l; |
841 | } | |
d0732f64 CW |
842 | |
843 | hlist_for_each_entry_from(tmp, e, next) { | |
1da177e4 LT |
844 | if (--*l < 0) |
845 | break; | |
846 | } | |
d0732f64 CW |
847 | state->node = e; |
848 | ||
1da177e4 LT |
849 | return (*l < 0) ? state : NULL; |
850 | } | |
851 | ||
852 | static void *lec_arp_walk(struct lec_state *state, loff_t *l, | |
d44f7746 | 853 | struct lec_priv *priv) |
1da177e4 LT |
854 | { |
855 | void *v = NULL; | |
856 | int p; | |
857 | ||
858 | for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) { | |
d0732f64 | 859 | v = lec_tbl_walk(state, &priv->lec_arp_tables[p], l); |
1da177e4 LT |
860 | if (v) |
861 | break; | |
862 | } | |
863 | state->arp_table = p; | |
864 | return v; | |
865 | } | |
866 | ||
867 | static void *lec_misc_walk(struct lec_state *state, loff_t *l, | |
868 | struct lec_priv *priv) | |
869 | { | |
d0732f64 CW |
870 | struct hlist_head *lec_misc_tables[] = { |
871 | &priv->lec_arp_empty_ones, | |
872 | &priv->lec_no_forward, | |
873 | &priv->mcast_fwds | |
1da177e4 LT |
874 | }; |
875 | void *v = NULL; | |
876 | int q; | |
877 | ||
878 | for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) { | |
879 | v = lec_tbl_walk(state, lec_misc_tables[q], l); | |
880 | if (v) | |
881 | break; | |
882 | } | |
883 | state->misc_table = q; | |
884 | return v; | |
885 | } | |
886 | ||
887 | static void *lec_priv_walk(struct lec_state *state, loff_t *l, | |
888 | struct lec_priv *priv) | |
889 | { | |
890 | if (!state->locked) { | |
891 | state->locked = priv; | |
892 | spin_lock_irqsave(&priv->lec_arp_lock, state->flags); | |
893 | } | |
d44f7746 | 894 | if (!lec_arp_walk(state, l, priv) && !lec_misc_walk(state, l, priv)) { |
1da177e4 LT |
895 | spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags); |
896 | state->locked = NULL; | |
897 | /* Partial state reset for the next time we get called */ | |
898 | state->arp_table = state->misc_table = 0; | |
899 | } | |
900 | return state->locked; | |
901 | } | |
902 | ||
903 | static void *lec_itf_walk(struct lec_state *state, loff_t *l) | |
904 | { | |
905 | struct net_device *dev; | |
906 | void *v; | |
907 | ||
908 | dev = state->dev ? state->dev : dev_lec[state->itf]; | |
524ad0a7 WC |
909 | v = (dev && netdev_priv(dev)) ? |
910 | lec_priv_walk(state, l, netdev_priv(dev)) : NULL; | |
1da177e4 LT |
911 | if (!v && dev) { |
912 | dev_put(dev); | |
913 | /* Partial state reset for the next time we get called */ | |
914 | dev = NULL; | |
915 | } | |
916 | state->dev = dev; | |
917 | return v; | |
918 | } | |
919 | ||
920 | static void *lec_get_idx(struct lec_state *state, loff_t l) | |
921 | { | |
922 | void *v = NULL; | |
923 | ||
924 | for (; state->itf < MAX_LEC_ITF; state->itf++) { | |
925 | v = lec_itf_walk(state, &l); | |
926 | if (v) | |
927 | break; | |
928 | } | |
d44f7746 | 929 | return v; |
1da177e4 LT |
930 | } |
931 | ||
932 | static void *lec_seq_start(struct seq_file *seq, loff_t *pos) | |
933 | { | |
934 | struct lec_state *state = seq->private; | |
935 | ||
936 | state->itf = 0; | |
937 | state->dev = NULL; | |
938 | state->locked = NULL; | |
939 | state->arp_table = 0; | |
940 | state->misc_table = 0; | |
2e1e9848 | 941 | state->node = SEQ_START_TOKEN; |
1da177e4 | 942 | |
2e1e9848 | 943 | return *pos ? lec_get_idx(state, *pos) : SEQ_START_TOKEN; |
1da177e4 LT |
944 | } |
945 | ||
946 | static void lec_seq_stop(struct seq_file *seq, void *v) | |
947 | { | |
948 | struct lec_state *state = seq->private; | |
949 | ||
950 | if (state->dev) { | |
951 | spin_unlock_irqrestore(&state->locked->lec_arp_lock, | |
952 | state->flags); | |
953 | dev_put(state->dev); | |
954 | } | |
955 | } | |
956 | ||
957 | static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
958 | { | |
959 | struct lec_state *state = seq->private; | |
960 | ||
961 | v = lec_get_idx(state, 1); | |
962 | *pos += !!PTR_ERR(v); | |
963 | return v; | |
964 | } | |
965 | ||
966 | static int lec_seq_show(struct seq_file *seq, void *v) | |
967 | { | |
36cbd3dc JE |
968 | static const char lec_banner[] = |
969 | "Itf MAC ATM destination" | |
d44f7746 CW |
970 | " Status Flags " |
971 | "VPI/VCI Recv VPI/VCI\n"; | |
1da177e4 | 972 | |
2e1e9848 | 973 | if (v == SEQ_START_TOKEN) |
1da177e4 LT |
974 | seq_puts(seq, lec_banner); |
975 | else { | |
976 | struct lec_state *state = seq->private; | |
d44f7746 | 977 | struct net_device *dev = state->dev; |
c48192a7 JP |
978 | struct lec_arp_table *entry = hlist_entry(state->node, |
979 | struct lec_arp_table, | |
980 | next); | |
1da177e4 LT |
981 | |
982 | seq_printf(seq, "%s ", dev->name); | |
d0732f64 | 983 | lec_info(seq, entry); |
1da177e4 LT |
984 | } |
985 | return 0; | |
986 | } | |
987 | ||
56b3d975 | 988 | static const struct seq_operations lec_seq_ops = { |
d44f7746 CW |
989 | .start = lec_seq_start, |
990 | .next = lec_seq_next, | |
991 | .stop = lec_seq_stop, | |
992 | .show = lec_seq_show, | |
1da177e4 LT |
993 | }; |
994 | ||
995 | static int lec_seq_open(struct inode *inode, struct file *file) | |
996 | { | |
9a8c09e7 | 997 | return seq_open_private(file, &lec_seq_ops, sizeof(struct lec_state)); |
1da177e4 LT |
998 | } |
999 | ||
9a32144e | 1000 | static const struct file_operations lec_seq_fops = { |
d44f7746 CW |
1001 | .owner = THIS_MODULE, |
1002 | .open = lec_seq_open, | |
1003 | .read = seq_read, | |
1004 | .llseek = seq_lseek, | |
9a8c09e7 | 1005 | .release = seq_release_private, |
1da177e4 LT |
1006 | }; |
1007 | #endif | |
1008 | ||
1009 | static int lane_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1010 | { | |
1011 | struct atm_vcc *vcc = ATM_SD(sock); | |
1012 | int err = 0; | |
d44f7746 | 1013 | |
1da177e4 | 1014 | switch (cmd) { |
d44f7746 CW |
1015 | case ATMLEC_CTRL: |
1016 | case ATMLEC_MCAST: | |
1017 | case ATMLEC_DATA: | |
1018 | if (!capable(CAP_NET_ADMIN)) | |
1019 | return -EPERM; | |
1020 | break; | |
1021 | default: | |
1022 | return -ENOIOCTLCMD; | |
1da177e4 LT |
1023 | } |
1024 | ||
1025 | switch (cmd) { | |
d44f7746 CW |
1026 | case ATMLEC_CTRL: |
1027 | err = lecd_attach(vcc, (int)arg); | |
1028 | if (err >= 0) | |
1029 | sock->state = SS_CONNECTED; | |
1030 | break; | |
1031 | case ATMLEC_MCAST: | |
1032 | err = lec_mcast_attach(vcc, (int)arg); | |
1033 | break; | |
1034 | case ATMLEC_DATA: | |
1035 | err = lec_vcc_attach(vcc, (void __user *)arg); | |
1036 | break; | |
1da177e4 LT |
1037 | } |
1038 | ||
1039 | return err; | |
1040 | } | |
1041 | ||
1042 | static struct atm_ioctl lane_ioctl_ops = { | |
d44f7746 CW |
1043 | .owner = THIS_MODULE, |
1044 | .ioctl = lane_ioctl, | |
1da177e4 LT |
1045 | }; |
1046 | ||
1047 | static int __init lane_module_init(void) | |
1048 | { | |
1049 | #ifdef CONFIG_PROC_FS | |
1050 | struct proc_dir_entry *p; | |
1051 | ||
16e297b3 | 1052 | p = proc_create("lec", S_IRUGO, atm_proc_root, &lec_seq_fops); |
dbee0d3f | 1053 | if (!p) { |
99824461 | 1054 | pr_err("Unable to initialize /proc/net/atm/lec\n"); |
dbee0d3f WC |
1055 | return -ENOMEM; |
1056 | } | |
1da177e4 LT |
1057 | #endif |
1058 | ||
1059 | register_atm_ioctl(&lane_ioctl_ops); | |
36a9f77e | 1060 | pr_info("lec.c: initialized\n"); |
d44f7746 | 1061 | return 0; |
1da177e4 LT |
1062 | } |
1063 | ||
1064 | static void __exit lane_module_cleanup(void) | |
1065 | { | |
d44f7746 | 1066 | int i; |
1da177e4 LT |
1067 | |
1068 | remove_proc_entry("lec", atm_proc_root); | |
1069 | ||
1070 | deregister_atm_ioctl(&lane_ioctl_ops); | |
1071 | ||
d44f7746 CW |
1072 | for (i = 0; i < MAX_LEC_ITF; i++) { |
1073 | if (dev_lec[i] != NULL) { | |
1da177e4 | 1074 | unregister_netdev(dev_lec[i]); |
d44f7746 CW |
1075 | free_netdev(dev_lec[i]); |
1076 | dev_lec[i] = NULL; | |
1077 | } | |
1078 | } | |
1da177e4 LT |
1079 | } |
1080 | ||
1081 | module_init(lane_module_init); | |
1082 | module_exit(lane_module_cleanup); | |
1083 | ||
1084 | /* | |
1085 | * LANE2: 3.1.3, LE_RESOLVE.request | |
1086 | * Non force allocates memory and fills in *tlvs, fills in *sizeoftlvs. | |
1087 | * If sizeoftlvs == NULL the default TLVs associated with with this | |
1088 | * lec will be used. | |
1089 | * If dst_mac == NULL, targetless LE_ARP will be sent | |
1090 | */ | |
61c33e01 | 1091 | static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force, |
d44f7746 | 1092 | u8 **tlvs, u32 *sizeoftlvs) |
1da177e4 LT |
1093 | { |
1094 | unsigned long flags; | |
524ad0a7 | 1095 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
1096 | struct lec_arp_table *table; |
1097 | struct sk_buff *skb; | |
1098 | int retval; | |
1da177e4 | 1099 | |
d44f7746 | 1100 | if (force == 0) { |
1da177e4 | 1101 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d44f7746 | 1102 | table = lec_arp_find(priv, dst_mac); |
1da177e4 | 1103 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
d44f7746 CW |
1104 | if (table == NULL) |
1105 | return -1; | |
1106 | ||
2afe37cd | 1107 | *tlvs = kmemdup(table->tlvs, table->sizeoftlvs, GFP_ATOMIC); |
d44f7746 CW |
1108 | if (*tlvs == NULL) |
1109 | return -1; | |
1110 | ||
d44f7746 CW |
1111 | *sizeoftlvs = table->sizeoftlvs; |
1112 | ||
1113 | return 0; | |
1114 | } | |
1da177e4 LT |
1115 | |
1116 | if (sizeoftlvs == NULL) | |
1117 | retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, NULL); | |
d44f7746 | 1118 | |
1da177e4 LT |
1119 | else { |
1120 | skb = alloc_skb(*sizeoftlvs, GFP_ATOMIC); | |
1121 | if (skb == NULL) | |
1122 | return -1; | |
1123 | skb->len = *sizeoftlvs; | |
27d7ff46 | 1124 | skb_copy_to_linear_data(skb, *tlvs, *sizeoftlvs); |
1da177e4 LT |
1125 | retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb); |
1126 | } | |
d44f7746 CW |
1127 | return retval; |
1128 | } | |
1da177e4 LT |
1129 | |
1130 | /* | |
1131 | * LANE2: 3.1.4, LE_ASSOCIATE.request | |
1132 | * Associate the *tlvs with the *lan_dst address. | |
1133 | * Will overwrite any previous association | |
1134 | * Returns 1 for success, 0 for failure (out of memory) | |
1135 | * | |
1136 | */ | |
61c33e01 MBJ |
1137 | static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst, |
1138 | const u8 *tlvs, u32 sizeoftlvs) | |
1da177e4 | 1139 | { |
d44f7746 CW |
1140 | int retval; |
1141 | struct sk_buff *skb; | |
524ad0a7 | 1142 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 | 1143 | |
150238eb | 1144 | if (!ether_addr_equal(lan_dst, dev->dev_addr)) |
c48192a7 | 1145 | return 0; /* not our mac address */ |
d44f7746 CW |
1146 | |
1147 | kfree(priv->tlvs); /* NULL if there was no previous association */ | |
1148 | ||
2afe37cd | 1149 | priv->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL); |
d44f7746 | 1150 | if (priv->tlvs == NULL) |
c48192a7 | 1151 | return 0; |
d44f7746 | 1152 | priv->sizeoftlvs = sizeoftlvs; |
d44f7746 CW |
1153 | |
1154 | skb = alloc_skb(sizeoftlvs, GFP_ATOMIC); | |
1155 | if (skb == NULL) | |
1156 | return 0; | |
1157 | skb->len = sizeoftlvs; | |
27d7ff46 | 1158 | skb_copy_to_linear_data(skb, tlvs, sizeoftlvs); |
d44f7746 CW |
1159 | retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb); |
1160 | if (retval != 0) | |
c48192a7 | 1161 | pr_info("lec.c: lane2_associate_req() failed\n"); |
d44f7746 CW |
1162 | /* |
1163 | * If the previous association has changed we must | |
1164 | * somehow notify other LANE entities about the change | |
1165 | */ | |
c48192a7 | 1166 | return 1; |
1da177e4 LT |
1167 | } |
1168 | ||
1169 | /* | |
1170 | * LANE2: 3.1.5, LE_ASSOCIATE.indication | |
1171 | * | |
1172 | */ | |
61c33e01 MBJ |
1173 | static void lane2_associate_ind(struct net_device *dev, const u8 *mac_addr, |
1174 | const u8 *tlvs, u32 sizeoftlvs) | |
1da177e4 LT |
1175 | { |
1176 | #if 0 | |
d44f7746 | 1177 | int i = 0; |
1da177e4 | 1178 | #endif |
524ad0a7 | 1179 | struct lec_priv *priv = netdev_priv(dev); |
d44f7746 CW |
1180 | #if 0 /* |
1181 | * Why have the TLVs in LE_ARP entries | |
1182 | * since we do not use them? When you | |
1183 | * uncomment this code, make sure the | |
1184 | * TLVs get freed when entry is killed | |
1185 | */ | |
1186 | struct lec_arp_table *entry = lec_arp_find(priv, mac_addr); | |
1da177e4 | 1187 | |
d44f7746 CW |
1188 | if (entry == NULL) |
1189 | return; /* should not happen */ | |
1da177e4 | 1190 | |
d44f7746 | 1191 | kfree(entry->tlvs); |
1da177e4 | 1192 | |
2afe37cd | 1193 | entry->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL); |
d44f7746 CW |
1194 | if (entry->tlvs == NULL) |
1195 | return; | |
d44f7746 | 1196 | entry->sizeoftlvs = sizeoftlvs; |
1da177e4 LT |
1197 | #endif |
1198 | #if 0 | |
c48192a7 JP |
1199 | pr_info("\n"); |
1200 | pr_info("dump of tlvs, sizeoftlvs=%d\n", sizeoftlvs); | |
d44f7746 | 1201 | while (i < sizeoftlvs) |
c48192a7 | 1202 | pr_cont("%02x ", tlvs[i++]); |
d44f7746 | 1203 | |
c48192a7 | 1204 | pr_cont("\n"); |
1da177e4 LT |
1205 | #endif |
1206 | ||
d44f7746 CW |
1207 | /* tell MPOA about the TLVs we saw */ |
1208 | if (priv->lane2_ops && priv->lane2_ops->associate_indicator) { | |
1209 | priv->lane2_ops->associate_indicator(dev, mac_addr, | |
1210 | tlvs, sizeoftlvs); | |
1211 | } | |
1da177e4 LT |
1212 | } |
1213 | ||
1214 | /* | |
1215 | * Here starts what used to lec_arpc.c | |
1216 | * | |
1217 | * lec_arpc.c was added here when making | |
1218 | * lane client modular. October 1997 | |
1da177e4 LT |
1219 | */ |
1220 | ||
1221 | #include <linux/types.h> | |
1da177e4 | 1222 | #include <linux/timer.h> |
c48192a7 | 1223 | #include <linux/param.h> |
60063497 | 1224 | #include <linux/atomic.h> |
1da177e4 LT |
1225 | #include <linux/inetdevice.h> |
1226 | #include <net/route.h> | |
1227 | ||
1da177e4 | 1228 | #if 0 |
c48192a7 | 1229 | #define pr_debug(format, args...) |
1da177e4 | 1230 | /* |
99824461 | 1231 | #define pr_debug printk |
1da177e4 LT |
1232 | */ |
1233 | #endif | |
1234 | #define DEBUG_ARP_TABLE 0 | |
1235 | ||
1236 | #define LEC_ARP_REFRESH_INTERVAL (3*HZ) | |
1237 | ||
c4028958 | 1238 | static void lec_arp_check_expire(struct work_struct *work); |
1da177e4 LT |
1239 | static void lec_arp_expire_arp(unsigned long data); |
1240 | ||
f7d57453 | 1241 | /* |
1da177e4 LT |
1242 | * Arp table funcs |
1243 | */ | |
1244 | ||
c48192a7 | 1245 | #define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE - 1)) |
1da177e4 LT |
1246 | |
1247 | /* | |
1248 | * Initialization of arp-cache | |
1249 | */ | |
1fa9961d | 1250 | static void lec_arp_init(struct lec_priv *priv) |
1da177e4 | 1251 | { |
1fa9961d | 1252 | unsigned short i; |
1da177e4 | 1253 | |
c48192a7 | 1254 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) |
d0732f64 | 1255 | INIT_HLIST_HEAD(&priv->lec_arp_tables[i]); |
f7d57453 YH |
1256 | INIT_HLIST_HEAD(&priv->lec_arp_empty_ones); |
1257 | INIT_HLIST_HEAD(&priv->lec_no_forward); | |
1258 | INIT_HLIST_HEAD(&priv->mcast_fwds); | |
1da177e4 | 1259 | spin_lock_init(&priv->lec_arp_lock); |
c4028958 | 1260 | INIT_DELAYED_WORK(&priv->lec_arp_work, lec_arp_check_expire); |
987e46bd | 1261 | schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL); |
1da177e4 LT |
1262 | } |
1263 | ||
1fa9961d | 1264 | static void lec_arp_clear_vccs(struct lec_arp_table *entry) |
1da177e4 | 1265 | { |
1fa9961d | 1266 | if (entry->vcc) { |
1da177e4 LT |
1267 | struct atm_vcc *vcc = entry->vcc; |
1268 | struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); | |
1fa9961d | 1269 | struct net_device *dev = (struct net_device *)vcc->proto_data; |
1da177e4 | 1270 | |
1fa9961d | 1271 | vcc->pop = vpriv->old_pop; |
1da177e4 LT |
1272 | if (vpriv->xoff) |
1273 | netif_wake_queue(dev); | |
1274 | kfree(vpriv); | |
1275 | vcc->user_back = NULL; | |
1fa9961d | 1276 | vcc->push = entry->old_push; |
1da177e4 | 1277 | vcc_release_async(vcc, -EPIPE); |
d0732f64 | 1278 | entry->vcc = NULL; |
1fa9961d CW |
1279 | } |
1280 | if (entry->recv_vcc) { | |
1281 | entry->recv_vcc->push = entry->old_recv_push; | |
1da177e4 | 1282 | vcc_release_async(entry->recv_vcc, -EPIPE); |
1fa9961d CW |
1283 | entry->recv_vcc = NULL; |
1284 | } | |
1da177e4 LT |
1285 | } |
1286 | ||
1287 | /* | |
1288 | * Insert entry to lec_arp_table | |
1289 | * LANE2: Add to the end of the list to satisfy 8.1.13 | |
1290 | */ | |
1fa9961d | 1291 | static inline void |
d0732f64 | 1292 | lec_arp_add(struct lec_priv *priv, struct lec_arp_table *entry) |
1da177e4 | 1293 | { |
d0732f64 | 1294 | struct hlist_head *tmp; |
1fa9961d | 1295 | |
d0732f64 CW |
1296 | tmp = &priv->lec_arp_tables[HASH(entry->mac_addr[ETH_ALEN - 1])]; |
1297 | hlist_add_head(&entry->next, tmp); | |
1fa9961d | 1298 | |
99824461 | 1299 | pr_debug("Added entry:%pM\n", entry->mac_addr); |
1da177e4 LT |
1300 | } |
1301 | ||
1302 | /* | |
1303 | * Remove entry from lec_arp_table | |
1304 | */ | |
1fa9961d CW |
1305 | static int |
1306 | lec_arp_remove(struct lec_priv *priv, struct lec_arp_table *to_remove) | |
1da177e4 | 1307 | { |
d0732f64 CW |
1308 | struct hlist_node *node; |
1309 | struct lec_arp_table *entry; | |
1310 | int i, remove_vcc = 1; | |
1fa9961d | 1311 | |
c48192a7 | 1312 | if (!to_remove) |
1fa9961d | 1313 | return -1; |
d0732f64 CW |
1314 | |
1315 | hlist_del(&to_remove->next); | |
1fa9961d CW |
1316 | del_timer(&to_remove->timer); |
1317 | ||
c48192a7 JP |
1318 | /* |
1319 | * If this is the only MAC connected to this VCC, | |
1320 | * also tear down the VCC | |
1321 | */ | |
1fa9961d CW |
1322 | if (to_remove->status >= ESI_FLUSH_PENDING) { |
1323 | /* | |
1324 | * ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT | |
1325 | */ | |
d0732f64 | 1326 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
c48192a7 JP |
1327 | hlist_for_each_entry(entry, node, |
1328 | &priv->lec_arp_tables[i], next) { | |
d0732f64 CW |
1329 | if (memcmp(to_remove->atm_addr, |
1330 | entry->atm_addr, ATM_ESA_LEN) == 0) { | |
1fa9961d CW |
1331 | remove_vcc = 0; |
1332 | break; | |
1333 | } | |
1334 | } | |
1335 | } | |
1336 | if (remove_vcc) | |
1337 | lec_arp_clear_vccs(to_remove); | |
1338 | } | |
1339 | skb_queue_purge(&to_remove->tx_wait); /* FIXME: good place for this? */ | |
1340 | ||
99824461 | 1341 | pr_debug("Removed entry:%pM\n", to_remove->mac_addr); |
1fa9961d | 1342 | return 0; |
1da177e4 LT |
1343 | } |
1344 | ||
1345 | #if DEBUG_ARP_TABLE | |
36cbd3dc | 1346 | static const char *get_status_string(unsigned char st) |
1da177e4 | 1347 | { |
1fa9961d CW |
1348 | switch (st) { |
1349 | case ESI_UNKNOWN: | |
1350 | return "ESI_UNKNOWN"; | |
1351 | case ESI_ARP_PENDING: | |
1352 | return "ESI_ARP_PENDING"; | |
1353 | case ESI_VC_PENDING: | |
1354 | return "ESI_VC_PENDING"; | |
1355 | case ESI_FLUSH_PENDING: | |
1356 | return "ESI_FLUSH_PENDING"; | |
1357 | case ESI_FORWARD_DIRECT: | |
1358 | return "ESI_FORWARD_DIRECT"; | |
1fa9961d | 1359 | } |
c48192a7 | 1360 | return "<UNKNOWN>"; |
1da177e4 | 1361 | } |
1da177e4 | 1362 | |
1fa9961d | 1363 | static void dump_arp_table(struct lec_priv *priv) |
1da177e4 | 1364 | { |
d0732f64 | 1365 | struct hlist_node *node; |
1fa9961d | 1366 | struct lec_arp_table *rulla; |
d0732f64 CW |
1367 | char buf[256]; |
1368 | int i, j, offset; | |
1fa9961d | 1369 | |
c48192a7 | 1370 | pr_info("Dump %p:\n", priv); |
1fa9961d | 1371 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
c48192a7 JP |
1372 | hlist_for_each_entry(rulla, node, |
1373 | &priv->lec_arp_tables[i], next) { | |
d0732f64 CW |
1374 | offset = 0; |
1375 | offset += sprintf(buf, "%d: %p\n", i, rulla); | |
c48192a7 JP |
1376 | offset += sprintf(buf + offset, "Mac: %pM", |
1377 | rulla->mac_addr); | |
1378 | offset += sprintf(buf + offset, " Atm:"); | |
1fa9961d CW |
1379 | for (j = 0; j < ATM_ESA_LEN; j++) { |
1380 | offset += sprintf(buf + offset, | |
1381 | "%2.2x ", | |
1382 | rulla->atm_addr[j] & 0xff); | |
1383 | } | |
1384 | offset += sprintf(buf + offset, | |
1385 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1386 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1387 | rulla->vcc ? rulla->vcc->vci : 0, | |
1388 | rulla->recv_vcc ? rulla->recv_vcc-> | |
1389 | vpi : 0, | |
1390 | rulla->recv_vcc ? rulla->recv_vcc-> | |
1391 | vci : 0, rulla->last_used, | |
1392 | rulla->timestamp, rulla->no_tries); | |
1393 | offset += | |
1394 | sprintf(buf + offset, | |
1395 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1396 | rulla->flags, rulla->packets_flooded, | |
1397 | get_status_string(rulla->status)); | |
c48192a7 | 1398 | pr_info("%s\n", buf); |
1fa9961d | 1399 | } |
1fa9961d | 1400 | } |
d0732f64 CW |
1401 | |
1402 | if (!hlist_empty(&priv->lec_no_forward)) | |
c48192a7 | 1403 | pr_info("No forward\n"); |
d0732f64 | 1404 | hlist_for_each_entry(rulla, node, &priv->lec_no_forward, next) { |
1fa9961d | 1405 | offset = 0; |
c48192a7 JP |
1406 | offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr); |
1407 | offset += sprintf(buf + offset, " Atm:"); | |
1fa9961d CW |
1408 | for (j = 0; j < ATM_ESA_LEN; j++) { |
1409 | offset += sprintf(buf + offset, "%2.2x ", | |
1410 | rulla->atm_addr[j] & 0xff); | |
1411 | } | |
1412 | offset += sprintf(buf + offset, | |
1413 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1414 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1415 | rulla->vcc ? rulla->vcc->vci : 0, | |
1416 | rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, | |
1417 | rulla->recv_vcc ? rulla->recv_vcc->vci : 0, | |
1418 | rulla->last_used, | |
1419 | rulla->timestamp, rulla->no_tries); | |
1420 | offset += sprintf(buf + offset, | |
1421 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1422 | rulla->flags, rulla->packets_flooded, | |
1423 | get_status_string(rulla->status)); | |
c48192a7 | 1424 | pr_info("%s\n", buf); |
1fa9961d | 1425 | } |
d0732f64 CW |
1426 | |
1427 | if (!hlist_empty(&priv->lec_arp_empty_ones)) | |
c48192a7 | 1428 | pr_info("Empty ones\n"); |
d0732f64 | 1429 | hlist_for_each_entry(rulla, node, &priv->lec_arp_empty_ones, next) { |
1fa9961d | 1430 | offset = 0; |
c48192a7 JP |
1431 | offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr); |
1432 | offset += sprintf(buf + offset, " Atm:"); | |
1fa9961d CW |
1433 | for (j = 0; j < ATM_ESA_LEN; j++) { |
1434 | offset += sprintf(buf + offset, "%2.2x ", | |
1435 | rulla->atm_addr[j] & 0xff); | |
1436 | } | |
1437 | offset += sprintf(buf + offset, | |
1438 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1439 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1440 | rulla->vcc ? rulla->vcc->vci : 0, | |
1441 | rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, | |
1442 | rulla->recv_vcc ? rulla->recv_vcc->vci : 0, | |
1443 | rulla->last_used, | |
1444 | rulla->timestamp, rulla->no_tries); | |
1445 | offset += sprintf(buf + offset, | |
1446 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1447 | rulla->flags, rulla->packets_flooded, | |
1448 | get_status_string(rulla->status)); | |
c48192a7 | 1449 | pr_info("%s", buf); |
1fa9961d CW |
1450 | } |
1451 | ||
d0732f64 | 1452 | if (!hlist_empty(&priv->mcast_fwds)) |
c48192a7 | 1453 | pr_info("Multicast Forward VCCs\n"); |
d0732f64 | 1454 | hlist_for_each_entry(rulla, node, &priv->mcast_fwds, next) { |
1fa9961d | 1455 | offset = 0; |
c48192a7 JP |
1456 | offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr); |
1457 | offset += sprintf(buf + offset, " Atm:"); | |
1fa9961d CW |
1458 | for (j = 0; j < ATM_ESA_LEN; j++) { |
1459 | offset += sprintf(buf + offset, "%2.2x ", | |
1460 | rulla->atm_addr[j] & 0xff); | |
1461 | } | |
1462 | offset += sprintf(buf + offset, | |
1463 | "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", | |
1464 | rulla->vcc ? rulla->vcc->vpi : 0, | |
1465 | rulla->vcc ? rulla->vcc->vci : 0, | |
1466 | rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, | |
1467 | rulla->recv_vcc ? rulla->recv_vcc->vci : 0, | |
1468 | rulla->last_used, | |
1469 | rulla->timestamp, rulla->no_tries); | |
1470 | offset += sprintf(buf + offset, | |
1471 | "Flags:%x, Packets_flooded:%x, Status: %s ", | |
1472 | rulla->flags, rulla->packets_flooded, | |
1473 | get_status_string(rulla->status)); | |
c48192a7 | 1474 | pr_info("%s\n", buf); |
1fa9961d | 1475 | } |
1da177e4 | 1476 | |
1da177e4 | 1477 | } |
d0732f64 CW |
1478 | #else |
1479 | #define dump_arp_table(priv) do { } while (0) | |
1480 | #endif | |
1da177e4 LT |
1481 | |
1482 | /* | |
1483 | * Destruction of arp-cache | |
1484 | */ | |
1fa9961d | 1485 | static void lec_arp_destroy(struct lec_priv *priv) |
1da177e4 LT |
1486 | { |
1487 | unsigned long flags; | |
d0732f64 CW |
1488 | struct hlist_node *node, *next; |
1489 | struct lec_arp_table *entry; | |
1fa9961d CW |
1490 | int i; |
1491 | ||
afe2c511 | 1492 | cancel_delayed_work_sync(&priv->lec_arp_work); |
1da177e4 | 1493 | |
1fa9961d CW |
1494 | /* |
1495 | * Remove all entries | |
1496 | */ | |
1da177e4 LT |
1497 | |
1498 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d | 1499 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
c48192a7 JP |
1500 | hlist_for_each_entry_safe(entry, node, next, |
1501 | &priv->lec_arp_tables[i], next) { | |
1fa9961d | 1502 | lec_arp_remove(priv, entry); |
33a9c2d4 | 1503 | lec_arp_put(entry); |
1fa9961d | 1504 | } |
d0732f64 | 1505 | INIT_HLIST_HEAD(&priv->lec_arp_tables[i]); |
1fa9961d | 1506 | } |
d0732f64 | 1507 | |
c48192a7 JP |
1508 | hlist_for_each_entry_safe(entry, node, next, |
1509 | &priv->lec_arp_empty_ones, next) { | |
1fa9961d CW |
1510 | del_timer_sync(&entry->timer); |
1511 | lec_arp_clear_vccs(entry); | |
d0732f64 | 1512 | hlist_del(&entry->next); |
33a9c2d4 | 1513 | lec_arp_put(entry); |
1fa9961d | 1514 | } |
d0732f64 CW |
1515 | INIT_HLIST_HEAD(&priv->lec_arp_empty_ones); |
1516 | ||
c48192a7 JP |
1517 | hlist_for_each_entry_safe(entry, node, next, |
1518 | &priv->lec_no_forward, next) { | |
1fa9961d CW |
1519 | del_timer_sync(&entry->timer); |
1520 | lec_arp_clear_vccs(entry); | |
d0732f64 | 1521 | hlist_del(&entry->next); |
33a9c2d4 | 1522 | lec_arp_put(entry); |
1fa9961d | 1523 | } |
d0732f64 CW |
1524 | INIT_HLIST_HEAD(&priv->lec_no_forward); |
1525 | ||
1526 | hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) { | |
1fa9961d CW |
1527 | /* No timer, LANEv2 7.1.20 and 2.3.5.3 */ |
1528 | lec_arp_clear_vccs(entry); | |
d0732f64 | 1529 | hlist_del(&entry->next); |
33a9c2d4 | 1530 | lec_arp_put(entry); |
1fa9961d | 1531 | } |
d0732f64 | 1532 | INIT_HLIST_HEAD(&priv->mcast_fwds); |
1fa9961d | 1533 | priv->mcast_vcc = NULL; |
1da177e4 LT |
1534 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1535 | } | |
1536 | ||
f7d57453 | 1537 | /* |
1da177e4 LT |
1538 | * Find entry by mac_address |
1539 | */ | |
1fa9961d | 1540 | static struct lec_arp_table *lec_arp_find(struct lec_priv *priv, |
61c33e01 | 1541 | const unsigned char *mac_addr) |
1da177e4 | 1542 | { |
d0732f64 CW |
1543 | struct hlist_node *node; |
1544 | struct hlist_head *head; | |
1545 | struct lec_arp_table *entry; | |
1fa9961d | 1546 | |
99824461 | 1547 | pr_debug("%pM\n", mac_addr); |
1fa9961d | 1548 | |
d0732f64 CW |
1549 | head = &priv->lec_arp_tables[HASH(mac_addr[ETH_ALEN - 1])]; |
1550 | hlist_for_each_entry(entry, node, head, next) { | |
150238eb | 1551 | if (ether_addr_equal(mac_addr, entry->mac_addr)) |
d0732f64 | 1552 | return entry; |
1fa9961d CW |
1553 | } |
1554 | return NULL; | |
1da177e4 LT |
1555 | } |
1556 | ||
1fa9961d | 1557 | static struct lec_arp_table *make_entry(struct lec_priv *priv, |
61c33e01 | 1558 | const unsigned char *mac_addr) |
1da177e4 | 1559 | { |
1fa9961d CW |
1560 | struct lec_arp_table *to_return; |
1561 | ||
1562 | to_return = kzalloc(sizeof(struct lec_arp_table), GFP_ATOMIC); | |
1563 | if (!to_return) { | |
c48192a7 | 1564 | pr_info("LEC: Arp entry kmalloc failed\n"); |
1fa9961d CW |
1565 | return NULL; |
1566 | } | |
1567 | memcpy(to_return->mac_addr, mac_addr, ETH_ALEN); | |
d0732f64 | 1568 | INIT_HLIST_NODE(&to_return->next); |
b24b8a24 PE |
1569 | setup_timer(&to_return->timer, lec_arp_expire_arp, |
1570 | (unsigned long)to_return); | |
1fa9961d CW |
1571 | to_return->last_used = jiffies; |
1572 | to_return->priv = priv; | |
1573 | skb_queue_head_init(&to_return->tx_wait); | |
33a9c2d4 | 1574 | atomic_set(&to_return->usage, 1); |
1fa9961d | 1575 | return to_return; |
1da177e4 LT |
1576 | } |
1577 | ||
1fa9961d CW |
1578 | /* Arp sent timer expired */ |
1579 | static void lec_arp_expire_arp(unsigned long data) | |
1da177e4 | 1580 | { |
1fa9961d CW |
1581 | struct lec_arp_table *entry; |
1582 | ||
1583 | entry = (struct lec_arp_table *)data; | |
1584 | ||
99824461 | 1585 | pr_debug("\n"); |
1fa9961d CW |
1586 | if (entry->status == ESI_ARP_PENDING) { |
1587 | if (entry->no_tries <= entry->priv->max_retry_count) { | |
1588 | if (entry->is_rdesc) | |
1589 | send_to_lecd(entry->priv, l_rdesc_arp_xmt, | |
1590 | entry->mac_addr, NULL, NULL); | |
1591 | else | |
1592 | send_to_lecd(entry->priv, l_arp_xmt, | |
1593 | entry->mac_addr, NULL, NULL); | |
1594 | entry->no_tries++; | |
1595 | } | |
1596 | mod_timer(&entry->timer, jiffies + (1 * HZ)); | |
1597 | } | |
1da177e4 LT |
1598 | } |
1599 | ||
1fa9961d CW |
1600 | /* Unknown/unused vcc expire, remove associated entry */ |
1601 | static void lec_arp_expire_vcc(unsigned long data) | |
1da177e4 LT |
1602 | { |
1603 | unsigned long flags; | |
1fa9961d CW |
1604 | struct lec_arp_table *to_remove = (struct lec_arp_table *)data; |
1605 | struct lec_priv *priv = (struct lec_priv *)to_remove->priv; | |
1da177e4 | 1606 | |
1fa9961d | 1607 | del_timer(&to_remove->timer); |
1da177e4 | 1608 | |
99824461 JP |
1609 | pr_debug("%p %p: vpi:%d vci:%d\n", |
1610 | to_remove, priv, | |
1611 | to_remove->vcc ? to_remove->recv_vcc->vpi : 0, | |
1612 | to_remove->vcc ? to_remove->recv_vcc->vci : 0); | |
1da177e4 LT |
1613 | |
1614 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
d0732f64 | 1615 | hlist_del(&to_remove->next); |
1da177e4 LT |
1616 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1617 | ||
1fa9961d | 1618 | lec_arp_clear_vccs(to_remove); |
33a9c2d4 | 1619 | lec_arp_put(to_remove); |
1da177e4 LT |
1620 | } |
1621 | ||
b4c84ec0 JP |
1622 | static bool __lec_arp_check_expire(struct lec_arp_table *entry, |
1623 | unsigned long now, | |
1624 | struct lec_priv *priv) | |
1625 | { | |
1626 | unsigned long time_to_check; | |
1627 | ||
1628 | if ((entry->flags) & LEC_REMOTE_FLAG && priv->topology_change) | |
1629 | time_to_check = priv->forward_delay_time; | |
1630 | else | |
1631 | time_to_check = priv->aging_time; | |
1632 | ||
1633 | pr_debug("About to expire: %lx - %lx > %lx\n", | |
1634 | now, entry->last_used, time_to_check); | |
1635 | if (time_after(now, entry->last_used + time_to_check) && | |
1636 | !(entry->flags & LEC_PERMANENT_FLAG) && | |
1637 | !(entry->mac_addr[0] & 0x01)) { /* LANE2: 7.1.20 */ | |
1638 | /* Remove entry */ | |
1639 | pr_debug("Entry timed out\n"); | |
1640 | lec_arp_remove(priv, entry); | |
1641 | lec_arp_put(entry); | |
1642 | } else { | |
1643 | /* Something else */ | |
1644 | if ((entry->status == ESI_VC_PENDING || | |
1645 | entry->status == ESI_ARP_PENDING) && | |
1646 | time_after_eq(now, entry->timestamp + | |
1647 | priv->max_unknown_frame_time)) { | |
1648 | entry->timestamp = jiffies; | |
1649 | entry->packets_flooded = 0; | |
1650 | if (entry->status == ESI_VC_PENDING) | |
1651 | send_to_lecd(priv, l_svc_setup, | |
1652 | entry->mac_addr, | |
1653 | entry->atm_addr, | |
1654 | NULL); | |
1655 | } | |
1656 | if (entry->status == ESI_FLUSH_PENDING && | |
1657 | time_after_eq(now, entry->timestamp + | |
1658 | priv->path_switching_delay)) { | |
1659 | lec_arp_hold(entry); | |
1660 | return true; | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | return false; | |
1665 | } | |
1da177e4 LT |
1666 | /* |
1667 | * Expire entries. | |
1668 | * 1. Re-set timer | |
1669 | * 2. For each entry, delete entries that have aged past the age limit. | |
1670 | * 3. For each entry, depending on the status of the entry, perform | |
1671 | * the following maintenance. | |
1672 | * a. If status is ESI_VC_PENDING or ESI_ARP_PENDING then if the | |
1673 | * tick_count is above the max_unknown_frame_time, clear | |
1674 | * the tick_count to zero and clear the packets_flooded counter | |
1675 | * to zero. This supports the packet rate limit per address | |
1676 | * while flooding unknowns. | |
1677 | * b. If the status is ESI_FLUSH_PENDING and the tick_count is greater | |
1678 | * than or equal to the path_switching_delay, change the status | |
1679 | * to ESI_FORWARD_DIRECT. This causes the flush period to end | |
1680 | * regardless of the progress of the flush protocol. | |
1681 | */ | |
c4028958 | 1682 | static void lec_arp_check_expire(struct work_struct *work) |
1da177e4 LT |
1683 | { |
1684 | unsigned long flags; | |
c4028958 DH |
1685 | struct lec_priv *priv = |
1686 | container_of(work, struct lec_priv, lec_arp_work.work); | |
d0732f64 CW |
1687 | struct hlist_node *node, *next; |
1688 | struct lec_arp_table *entry; | |
1fa9961d | 1689 | unsigned long now; |
1fa9961d CW |
1690 | int i; |
1691 | ||
99824461 | 1692 | pr_debug("%p\n", priv); |
1da177e4 | 1693 | now = jiffies; |
6656e3c4 | 1694 | restart: |
1da177e4 | 1695 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d | 1696 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
c48192a7 JP |
1697 | hlist_for_each_entry_safe(entry, node, next, |
1698 | &priv->lec_arp_tables[i], next) { | |
b4c84ec0 JP |
1699 | if (__lec_arp_check_expire(entry, now, priv)) { |
1700 | struct sk_buff *skb; | |
1701 | struct atm_vcc *vcc = entry->vcc; | |
1702 | ||
1703 | spin_unlock_irqrestore(&priv->lec_arp_lock, | |
1704 | flags); | |
1705 | while ((skb = skb_dequeue(&entry->tx_wait))) | |
1706 | lec_send(vcc, skb); | |
1707 | entry->last_used = jiffies; | |
1708 | entry->status = ESI_FORWARD_DIRECT; | |
33a9c2d4 | 1709 | lec_arp_put(entry); |
b4c84ec0 JP |
1710 | |
1711 | goto restart; | |
1da177e4 LT |
1712 | } |
1713 | } | |
1714 | } | |
1715 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1716 | ||
987e46bd | 1717 | schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL); |
1da177e4 | 1718 | } |
1fa9961d | 1719 | |
1da177e4 LT |
1720 | /* |
1721 | * Try to find vcc where mac_address is attached. | |
f7d57453 | 1722 | * |
1da177e4 | 1723 | */ |
1fa9961d | 1724 | static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv, |
c48192a7 JP |
1725 | const unsigned char *mac_to_find, |
1726 | int is_rdesc, | |
1fa9961d | 1727 | struct lec_arp_table **ret_entry) |
1da177e4 LT |
1728 | { |
1729 | unsigned long flags; | |
1fa9961d | 1730 | struct lec_arp_table *entry; |
1da177e4 LT |
1731 | struct atm_vcc *found; |
1732 | ||
1fa9961d CW |
1733 | if (mac_to_find[0] & 0x01) { |
1734 | switch (priv->lane_version) { | |
1735 | case 1: | |
1736 | return priv->mcast_vcc; | |
1fa9961d | 1737 | case 2: /* LANE2 wants arp for multicast addresses */ |
150238eb | 1738 | if (ether_addr_equal(mac_to_find, bus_mac)) |
1fa9961d CW |
1739 | return priv->mcast_vcc; |
1740 | break; | |
1741 | default: | |
1742 | break; | |
1743 | } | |
1744 | } | |
1da177e4 LT |
1745 | |
1746 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d CW |
1747 | entry = lec_arp_find(priv, mac_to_find); |
1748 | ||
1749 | if (entry) { | |
1750 | if (entry->status == ESI_FORWARD_DIRECT) { | |
1751 | /* Connection Ok */ | |
1752 | entry->last_used = jiffies; | |
6656e3c4 | 1753 | lec_arp_hold(entry); |
1fa9961d CW |
1754 | *ret_entry = entry; |
1755 | found = entry->vcc; | |
1da177e4 | 1756 | goto out; |
1fa9961d CW |
1757 | } |
1758 | /* | |
1759 | * If the LE_ARP cache entry is still pending, reset count to 0 | |
75b895c1 ST |
1760 | * so another LE_ARP request can be made for this frame. |
1761 | */ | |
c48192a7 | 1762 | if (entry->status == ESI_ARP_PENDING) |
75b895c1 | 1763 | entry->no_tries = 0; |
1fa9961d CW |
1764 | /* |
1765 | * Data direct VC not yet set up, check to see if the unknown | |
1766 | * frame count is greater than the limit. If the limit has | |
1767 | * not been reached, allow the caller to send packet to | |
1768 | * BUS. | |
1769 | */ | |
1770 | if (entry->status != ESI_FLUSH_PENDING && | |
1771 | entry->packets_flooded < | |
1772 | priv->maximum_unknown_frame_count) { | |
1773 | entry->packets_flooded++; | |
99824461 | 1774 | pr_debug("Flooding..\n"); |
1fa9961d | 1775 | found = priv->mcast_vcc; |
1da177e4 | 1776 | goto out; |
1fa9961d CW |
1777 | } |
1778 | /* | |
1779 | * We got here because entry->status == ESI_FLUSH_PENDING | |
1da177e4 LT |
1780 | * or BUS flood limit was reached for an entry which is |
1781 | * in ESI_ARP_PENDING or ESI_VC_PENDING state. | |
1782 | */ | |
6656e3c4 | 1783 | lec_arp_hold(entry); |
1fa9961d | 1784 | *ret_entry = entry; |
99824461 JP |
1785 | pr_debug("entry->status %d entry->vcc %p\n", entry->status, |
1786 | entry->vcc); | |
1fa9961d CW |
1787 | found = NULL; |
1788 | } else { | |
1789 | /* No matching entry was found */ | |
1790 | entry = make_entry(priv, mac_to_find); | |
99824461 | 1791 | pr_debug("Making entry\n"); |
1fa9961d CW |
1792 | if (!entry) { |
1793 | found = priv->mcast_vcc; | |
1da177e4 | 1794 | goto out; |
1fa9961d CW |
1795 | } |
1796 | lec_arp_add(priv, entry); | |
1797 | /* We want arp-request(s) to be sent */ | |
1798 | entry->packets_flooded = 1; | |
1799 | entry->status = ESI_ARP_PENDING; | |
1800 | entry->no_tries = 1; | |
1801 | entry->last_used = entry->timestamp = jiffies; | |
1802 | entry->is_rdesc = is_rdesc; | |
1803 | if (entry->is_rdesc) | |
1804 | send_to_lecd(priv, l_rdesc_arp_xmt, mac_to_find, NULL, | |
1805 | NULL); | |
1806 | else | |
1807 | send_to_lecd(priv, l_arp_xmt, mac_to_find, NULL, NULL); | |
1808 | entry->timer.expires = jiffies + (1 * HZ); | |
1809 | entry->timer.function = lec_arp_expire_arp; | |
1810 | add_timer(&entry->timer); | |
1811 | found = priv->mcast_vcc; | |
1812 | } | |
1da177e4 LT |
1813 | |
1814 | out: | |
1815 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1816 | return found; | |
1817 | } | |
1818 | ||
1819 | static int | |
61c33e01 | 1820 | lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr, |
1fa9961d | 1821 | unsigned long permanent) |
1da177e4 LT |
1822 | { |
1823 | unsigned long flags; | |
d0732f64 CW |
1824 | struct hlist_node *node, *next; |
1825 | struct lec_arp_table *entry; | |
1fa9961d | 1826 | int i; |
1da177e4 | 1827 | |
99824461 | 1828 | pr_debug("\n"); |
1da177e4 | 1829 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d | 1830 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
c48192a7 JP |
1831 | hlist_for_each_entry_safe(entry, node, next, |
1832 | &priv->lec_arp_tables[i], next) { | |
1833 | if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN) && | |
1834 | (permanent || | |
1835 | !(entry->flags & LEC_PERMANENT_FLAG))) { | |
1da177e4 | 1836 | lec_arp_remove(priv, entry); |
33a9c2d4 | 1837 | lec_arp_put(entry); |
1fa9961d | 1838 | } |
1da177e4 | 1839 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d CW |
1840 | return 0; |
1841 | } | |
1842 | } | |
1da177e4 | 1843 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d | 1844 | return -1; |
1da177e4 LT |
1845 | } |
1846 | ||
1847 | /* | |
f7d57453 | 1848 | * Notifies: Response to arp_request (atm_addr != NULL) |
1da177e4 LT |
1849 | */ |
1850 | static void | |
61c33e01 MBJ |
1851 | lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr, |
1852 | const unsigned char *atm_addr, unsigned long remoteflag, | |
1fa9961d | 1853 | unsigned int targetless_le_arp) |
1da177e4 LT |
1854 | { |
1855 | unsigned long flags; | |
d0732f64 | 1856 | struct hlist_node *node, *next; |
1fa9961d CW |
1857 | struct lec_arp_table *entry, *tmp; |
1858 | int i; | |
1da177e4 | 1859 | |
99824461 JP |
1860 | pr_debug("%smac:%pM\n", |
1861 | (targetless_le_arp) ? "targetless " : "", mac_addr); | |
1da177e4 LT |
1862 | |
1863 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d CW |
1864 | entry = lec_arp_find(priv, mac_addr); |
1865 | if (entry == NULL && targetless_le_arp) | |
1866 | goto out; /* | |
1867 | * LANE2: ignore targetless LE_ARPs for which | |
1868 | * we have no entry in the cache. 7.1.30 | |
1869 | */ | |
d0732f64 | 1870 | if (!hlist_empty(&priv->lec_arp_empty_ones)) { |
c48192a7 JP |
1871 | hlist_for_each_entry_safe(entry, node, next, |
1872 | &priv->lec_arp_empty_ones, next) { | |
d0732f64 CW |
1873 | if (memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN) == 0) { |
1874 | hlist_del(&entry->next); | |
1fa9961d | 1875 | del_timer(&entry->timer); |
d0732f64 CW |
1876 | tmp = lec_arp_find(priv, mac_addr); |
1877 | if (tmp) { | |
1878 | del_timer(&tmp->timer); | |
1879 | tmp->status = ESI_FORWARD_DIRECT; | |
1880 | memcpy(tmp->atm_addr, atm_addr, ATM_ESA_LEN); | |
1881 | tmp->vcc = entry->vcc; | |
1882 | tmp->old_push = entry->old_push; | |
1883 | tmp->last_used = jiffies; | |
1884 | del_timer(&entry->timer); | |
33a9c2d4 | 1885 | lec_arp_put(entry); |
d0732f64 CW |
1886 | entry = tmp; |
1887 | } else { | |
1888 | entry->status = ESI_FORWARD_DIRECT; | |
1889 | memcpy(entry->mac_addr, mac_addr, ETH_ALEN); | |
1890 | entry->last_used = jiffies; | |
1891 | lec_arp_add(priv, entry); | |
1892 | } | |
1893 | if (remoteflag) | |
1894 | entry->flags |= LEC_REMOTE_FLAG; | |
1895 | else | |
1896 | entry->flags &= ~LEC_REMOTE_FLAG; | |
52240062 | 1897 | pr_debug("After update\n"); |
d0732f64 CW |
1898 | dump_arp_table(priv); |
1899 | goto out; | |
1fa9961d | 1900 | } |
1fa9961d CW |
1901 | } |
1902 | } | |
d0732f64 | 1903 | |
1fa9961d CW |
1904 | entry = lec_arp_find(priv, mac_addr); |
1905 | if (!entry) { | |
1906 | entry = make_entry(priv, mac_addr); | |
1907 | if (!entry) | |
1908 | goto out; | |
1909 | entry->status = ESI_UNKNOWN; | |
1910 | lec_arp_add(priv, entry); | |
1911 | /* Temporary, changes before end of function */ | |
1912 | } | |
1913 | memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN); | |
1914 | del_timer(&entry->timer); | |
1915 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
c48192a7 JP |
1916 | hlist_for_each_entry(tmp, node, |
1917 | &priv->lec_arp_tables[i], next) { | |
1fa9961d CW |
1918 | if (entry != tmp && |
1919 | !memcmp(tmp->atm_addr, atm_addr, ATM_ESA_LEN)) { | |
1920 | /* Vcc to this host exists */ | |
1921 | if (tmp->status > ESI_VC_PENDING) { | |
1922 | /* | |
1923 | * ESI_FLUSH_PENDING, | |
1924 | * ESI_FORWARD_DIRECT | |
1925 | */ | |
1926 | entry->vcc = tmp->vcc; | |
1927 | entry->old_push = tmp->old_push; | |
1928 | } | |
1929 | entry->status = tmp->status; | |
1930 | break; | |
1931 | } | |
1932 | } | |
1933 | } | |
1934 | if (remoteflag) | |
1935 | entry->flags |= LEC_REMOTE_FLAG; | |
1936 | else | |
1937 | entry->flags &= ~LEC_REMOTE_FLAG; | |
1938 | if (entry->status == ESI_ARP_PENDING || entry->status == ESI_UNKNOWN) { | |
1939 | entry->status = ESI_VC_PENDING; | |
d0732f64 | 1940 | send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL); |
1fa9961d | 1941 | } |
52240062 | 1942 | pr_debug("After update2\n"); |
1fa9961d | 1943 | dump_arp_table(priv); |
1da177e4 LT |
1944 | out: |
1945 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1946 | } | |
1947 | ||
1948 | /* | |
f7d57453 | 1949 | * Notifies: Vcc setup ready |
1da177e4 LT |
1950 | */ |
1951 | static void | |
61c33e01 | 1952 | lec_vcc_added(struct lec_priv *priv, const struct atmlec_ioc *ioc_data, |
1fa9961d CW |
1953 | struct atm_vcc *vcc, |
1954 | void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb)) | |
1da177e4 LT |
1955 | { |
1956 | unsigned long flags; | |
d0732f64 | 1957 | struct hlist_node *node; |
1fa9961d CW |
1958 | struct lec_arp_table *entry; |
1959 | int i, found_entry = 0; | |
1da177e4 LT |
1960 | |
1961 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
c48192a7 | 1962 | /* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */ |
1fa9961d | 1963 | if (ioc_data->receive == 2) { |
52240062 | 1964 | pr_debug("LEC_ARP: Attaching mcast forward\n"); |
1da177e4 | 1965 | #if 0 |
1fa9961d CW |
1966 | entry = lec_arp_find(priv, bus_mac); |
1967 | if (!entry) { | |
c48192a7 | 1968 | pr_info("LEC_ARP: Multicast entry not found!\n"); |
1da177e4 | 1969 | goto out; |
1fa9961d CW |
1970 | } |
1971 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); | |
1972 | entry->recv_vcc = vcc; | |
1973 | entry->old_recv_push = old_push; | |
1da177e4 | 1974 | #endif |
1fa9961d CW |
1975 | entry = make_entry(priv, bus_mac); |
1976 | if (entry == NULL) | |
1da177e4 | 1977 | goto out; |
1fa9961d CW |
1978 | del_timer(&entry->timer); |
1979 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); | |
1980 | entry->recv_vcc = vcc; | |
1981 | entry->old_recv_push = old_push; | |
d0732f64 | 1982 | hlist_add_head(&entry->next, &priv->mcast_fwds); |
1fa9961d CW |
1983 | goto out; |
1984 | } else if (ioc_data->receive == 1) { | |
1985 | /* | |
1986 | * Vcc which we don't want to make default vcc, | |
1987 | * attach it anyway. | |
1988 | */ | |
99824461 JP |
1989 | pr_debug("LEC_ARP:Attaching data direct, not default: %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", |
1990 | ioc_data->atm_addr[0], ioc_data->atm_addr[1], | |
1991 | ioc_data->atm_addr[2], ioc_data->atm_addr[3], | |
1992 | ioc_data->atm_addr[4], ioc_data->atm_addr[5], | |
1993 | ioc_data->atm_addr[6], ioc_data->atm_addr[7], | |
1994 | ioc_data->atm_addr[8], ioc_data->atm_addr[9], | |
1995 | ioc_data->atm_addr[10], ioc_data->atm_addr[11], | |
1996 | ioc_data->atm_addr[12], ioc_data->atm_addr[13], | |
1997 | ioc_data->atm_addr[14], ioc_data->atm_addr[15], | |
1998 | ioc_data->atm_addr[16], ioc_data->atm_addr[17], | |
1999 | ioc_data->atm_addr[18], ioc_data->atm_addr[19]); | |
1fa9961d CW |
2000 | entry = make_entry(priv, bus_mac); |
2001 | if (entry == NULL) | |
1da177e4 | 2002 | goto out; |
1fa9961d CW |
2003 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); |
2004 | memset(entry->mac_addr, 0, ETH_ALEN); | |
2005 | entry->recv_vcc = vcc; | |
2006 | entry->old_recv_push = old_push; | |
2007 | entry->status = ESI_UNKNOWN; | |
2008 | entry->timer.expires = jiffies + priv->vcc_timeout_period; | |
2009 | entry->timer.function = lec_arp_expire_vcc; | |
d0732f64 | 2010 | hlist_add_head(&entry->next, &priv->lec_no_forward); |
1fa9961d | 2011 | add_timer(&entry->timer); |
1da177e4 LT |
2012 | dump_arp_table(priv); |
2013 | goto out; | |
1fa9961d | 2014 | } |
99824461 JP |
2015 | pr_debug("LEC_ARP:Attaching data direct, default: %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", |
2016 | ioc_data->atm_addr[0], ioc_data->atm_addr[1], | |
2017 | ioc_data->atm_addr[2], ioc_data->atm_addr[3], | |
2018 | ioc_data->atm_addr[4], ioc_data->atm_addr[5], | |
2019 | ioc_data->atm_addr[6], ioc_data->atm_addr[7], | |
2020 | ioc_data->atm_addr[8], ioc_data->atm_addr[9], | |
2021 | ioc_data->atm_addr[10], ioc_data->atm_addr[11], | |
2022 | ioc_data->atm_addr[12], ioc_data->atm_addr[13], | |
2023 | ioc_data->atm_addr[14], ioc_data->atm_addr[15], | |
2024 | ioc_data->atm_addr[16], ioc_data->atm_addr[17], | |
2025 | ioc_data->atm_addr[18], ioc_data->atm_addr[19]); | |
1fa9961d | 2026 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
c48192a7 JP |
2027 | hlist_for_each_entry(entry, node, |
2028 | &priv->lec_arp_tables[i], next) { | |
1fa9961d CW |
2029 | if (memcmp |
2030 | (ioc_data->atm_addr, entry->atm_addr, | |
2031 | ATM_ESA_LEN) == 0) { | |
52240062 SH |
2032 | pr_debug("LEC_ARP: Attaching data direct\n"); |
2033 | pr_debug("Currently -> Vcc: %d, Rvcc:%d\n", | |
99824461 JP |
2034 | entry->vcc ? entry->vcc->vci : 0, |
2035 | entry->recv_vcc ? entry->recv_vcc-> | |
2036 | vci : 0); | |
1fa9961d CW |
2037 | found_entry = 1; |
2038 | del_timer(&entry->timer); | |
2039 | entry->vcc = vcc; | |
2040 | entry->old_push = old_push; | |
2041 | if (entry->status == ESI_VC_PENDING) { | |
2042 | if (priv->maximum_unknown_frame_count | |
2043 | == 0) | |
2044 | entry->status = | |
2045 | ESI_FORWARD_DIRECT; | |
2046 | else { | |
2047 | entry->timestamp = jiffies; | |
2048 | entry->status = | |
2049 | ESI_FLUSH_PENDING; | |
1da177e4 | 2050 | #if 0 |
1fa9961d CW |
2051 | send_to_lecd(priv, l_flush_xmt, |
2052 | NULL, | |
2053 | entry->atm_addr, | |
2054 | NULL); | |
1da177e4 | 2055 | #endif |
1fa9961d CW |
2056 | } |
2057 | } else { | |
2058 | /* | |
2059 | * They were forming a connection | |
2060 | * to us, and we to them. Our | |
2061 | * ATM address is numerically lower | |
2062 | * than theirs, so we make connection | |
2063 | * we formed into default VCC (8.1.11). | |
2064 | * Connection they made gets torn | |
2065 | * down. This might confuse some | |
2066 | * clients. Can be changed if | |
2067 | * someone reports trouble... | |
2068 | */ | |
2069 | ; | |
2070 | } | |
2071 | } | |
2072 | } | |
2073 | } | |
2074 | if (found_entry) { | |
52240062 | 2075 | pr_debug("After vcc was added\n"); |
1fa9961d | 2076 | dump_arp_table(priv); |
1da177e4 | 2077 | goto out; |
1fa9961d CW |
2078 | } |
2079 | /* | |
2080 | * Not found, snatch address from first data packet that arrives | |
2081 | * from this vcc | |
2082 | */ | |
2083 | entry = make_entry(priv, bus_mac); | |
2084 | if (!entry) | |
1da177e4 | 2085 | goto out; |
1fa9961d CW |
2086 | entry->vcc = vcc; |
2087 | entry->old_push = old_push; | |
2088 | memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); | |
2089 | memset(entry->mac_addr, 0, ETH_ALEN); | |
2090 | entry->status = ESI_UNKNOWN; | |
d0732f64 | 2091 | hlist_add_head(&entry->next, &priv->lec_arp_empty_ones); |
1fa9961d CW |
2092 | entry->timer.expires = jiffies + priv->vcc_timeout_period; |
2093 | entry->timer.function = lec_arp_expire_vcc; | |
2094 | add_timer(&entry->timer); | |
52240062 | 2095 | pr_debug("After vcc was added\n"); |
1da177e4 LT |
2096 | dump_arp_table(priv); |
2097 | out: | |
2098 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2099 | } | |
2100 | ||
1fa9961d | 2101 | static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id) |
1da177e4 LT |
2102 | { |
2103 | unsigned long flags; | |
d0732f64 | 2104 | struct hlist_node *node; |
1fa9961d CW |
2105 | struct lec_arp_table *entry; |
2106 | int i; | |
1da177e4 | 2107 | |
99824461 | 2108 | pr_debug("%lx\n", tran_id); |
6656e3c4 | 2109 | restart: |
1fa9961d CW |
2110 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
2111 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { | |
c48192a7 JP |
2112 | hlist_for_each_entry(entry, node, |
2113 | &priv->lec_arp_tables[i], next) { | |
2114 | if (entry->flush_tran_id == tran_id && | |
2115 | entry->status == ESI_FLUSH_PENDING) { | |
1fa9961d | 2116 | struct sk_buff *skb; |
6656e3c4 | 2117 | struct atm_vcc *vcc = entry->vcc; |
1fa9961d | 2118 | |
6656e3c4 | 2119 | lec_arp_hold(entry); |
c48192a7 JP |
2120 | spin_unlock_irqrestore(&priv->lec_arp_lock, |
2121 | flags); | |
b4c84ec0 | 2122 | while ((skb = skb_dequeue(&entry->tx_wait))) |
162619e5 | 2123 | lec_send(vcc, skb); |
6656e3c4 | 2124 | entry->last_used = jiffies; |
1fa9961d | 2125 | entry->status = ESI_FORWARD_DIRECT; |
6656e3c4 | 2126 | lec_arp_put(entry); |
52240062 | 2127 | pr_debug("LEC_ARP: Flushed\n"); |
6656e3c4 | 2128 | goto restart; |
1fa9961d CW |
2129 | } |
2130 | } | |
2131 | } | |
1da177e4 | 2132 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d | 2133 | dump_arp_table(priv); |
1da177e4 LT |
2134 | } |
2135 | ||
2136 | static void | |
2137 | lec_set_flush_tran_id(struct lec_priv *priv, | |
61c33e01 | 2138 | const unsigned char *atm_addr, unsigned long tran_id) |
1da177e4 LT |
2139 | { |
2140 | unsigned long flags; | |
d0732f64 | 2141 | struct hlist_node *node; |
1fa9961d CW |
2142 | struct lec_arp_table *entry; |
2143 | int i; | |
1da177e4 LT |
2144 | |
2145 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
1fa9961d | 2146 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) |
c48192a7 JP |
2147 | hlist_for_each_entry(entry, node, |
2148 | &priv->lec_arp_tables[i], next) { | |
1fa9961d CW |
2149 | if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) { |
2150 | entry->flush_tran_id = tran_id; | |
52240062 | 2151 | pr_debug("Set flush transaction id to %lx for %p\n", |
99824461 | 2152 | tran_id, entry); |
1fa9961d | 2153 | } |
d0732f64 | 2154 | } |
1da177e4 LT |
2155 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
2156 | } | |
2157 | ||
1fa9961d | 2158 | static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc) |
1da177e4 LT |
2159 | { |
2160 | unsigned long flags; | |
1fa9961d CW |
2161 | unsigned char mac_addr[] = { |
2162 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff | |
2163 | }; | |
2164 | struct lec_arp_table *to_add; | |
1da177e4 LT |
2165 | struct lec_vcc_priv *vpriv; |
2166 | int err = 0; | |
1fa9961d | 2167 | |
c48192a7 JP |
2168 | vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL); |
2169 | if (!vpriv) | |
1da177e4 LT |
2170 | return -ENOMEM; |
2171 | vpriv->xoff = 0; | |
2172 | vpriv->old_pop = vcc->pop; | |
2173 | vcc->user_back = vpriv; | |
1fa9961d | 2174 | vcc->pop = lec_pop; |
1da177e4 | 2175 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d CW |
2176 | to_add = make_entry(priv, mac_addr); |
2177 | if (!to_add) { | |
1da177e4 LT |
2178 | vcc->pop = vpriv->old_pop; |
2179 | kfree(vpriv); | |
1fa9961d | 2180 | err = -ENOMEM; |
1da177e4 | 2181 | goto out; |
1fa9961d CW |
2182 | } |
2183 | memcpy(to_add->atm_addr, vcc->remote.sas_addr.prv, ATM_ESA_LEN); | |
2184 | to_add->status = ESI_FORWARD_DIRECT; | |
2185 | to_add->flags |= LEC_PERMANENT_FLAG; | |
2186 | to_add->vcc = vcc; | |
2187 | to_add->old_push = vcc->push; | |
2188 | vcc->push = lec_push; | |
2189 | priv->mcast_vcc = vcc; | |
2190 | lec_arp_add(priv, to_add); | |
1da177e4 LT |
2191 | out: |
2192 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
1fa9961d | 2193 | return err; |
1da177e4 LT |
2194 | } |
2195 | ||
1fa9961d | 2196 | static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc) |
1da177e4 LT |
2197 | { |
2198 | unsigned long flags; | |
d0732f64 CW |
2199 | struct hlist_node *node, *next; |
2200 | struct lec_arp_table *entry; | |
1fa9961d | 2201 | int i; |
1da177e4 | 2202 | |
52240062 | 2203 | pr_debug("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n", vcc->vpi, vcc->vci); |
1fa9961d | 2204 | dump_arp_table(priv); |
d0732f64 | 2205 | |
1da177e4 | 2206 | spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d0732f64 | 2207 | |
1fa9961d | 2208 | for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
c48192a7 JP |
2209 | hlist_for_each_entry_safe(entry, node, next, |
2210 | &priv->lec_arp_tables[i], next) { | |
1fa9961d CW |
2211 | if (vcc == entry->vcc) { |
2212 | lec_arp_remove(priv, entry); | |
33a9c2d4 | 2213 | lec_arp_put(entry); |
c48192a7 | 2214 | if (priv->mcast_vcc == vcc) |
1fa9961d | 2215 | priv->mcast_vcc = NULL; |
1fa9961d CW |
2216 | } |
2217 | } | |
2218 | } | |
2219 | ||
c48192a7 JP |
2220 | hlist_for_each_entry_safe(entry, node, next, |
2221 | &priv->lec_arp_empty_ones, next) { | |
d0732f64 | 2222 | if (entry->vcc == vcc) { |
1fa9961d CW |
2223 | lec_arp_clear_vccs(entry); |
2224 | del_timer(&entry->timer); | |
d0732f64 | 2225 | hlist_del(&entry->next); |
33a9c2d4 | 2226 | lec_arp_put(entry); |
1fa9961d | 2227 | } |
1fa9961d CW |
2228 | } |
2229 | ||
c48192a7 JP |
2230 | hlist_for_each_entry_safe(entry, node, next, |
2231 | &priv->lec_no_forward, next) { | |
1fa9961d CW |
2232 | if (entry->recv_vcc == vcc) { |
2233 | lec_arp_clear_vccs(entry); | |
2234 | del_timer(&entry->timer); | |
d0732f64 | 2235 | hlist_del(&entry->next); |
33a9c2d4 | 2236 | lec_arp_put(entry); |
1fa9961d | 2237 | } |
1fa9961d CW |
2238 | } |
2239 | ||
d0732f64 | 2240 | hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) { |
1fa9961d CW |
2241 | if (entry->recv_vcc == vcc) { |
2242 | lec_arp_clear_vccs(entry); | |
2243 | /* No timer, LANEv2 7.1.20 and 2.3.5.3 */ | |
d0732f64 | 2244 | hlist_del(&entry->next); |
33a9c2d4 | 2245 | lec_arp_put(entry); |
1fa9961d | 2246 | } |
1fa9961d | 2247 | } |
1da177e4 LT |
2248 | |
2249 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2250 | dump_arp_table(priv); | |
2251 | } | |
2252 | ||
2253 | static void | |
2254 | lec_arp_check_empties(struct lec_priv *priv, | |
1fa9961d | 2255 | struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4 | 2256 | { |
1fa9961d | 2257 | unsigned long flags; |
d0732f64 CW |
2258 | struct hlist_node *node, *next; |
2259 | struct lec_arp_table *entry, *tmp; | |
1fa9961d | 2260 | struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data; |
60eea6cf | 2261 | unsigned char *src = hdr->h_source; |
1da177e4 LT |
2262 | |
2263 | spin_lock_irqsave(&priv->lec_arp_lock, flags); | |
c48192a7 JP |
2264 | hlist_for_each_entry_safe(entry, node, next, |
2265 | &priv->lec_arp_empty_ones, next) { | |
d0732f64 CW |
2266 | if (vcc == entry->vcc) { |
2267 | del_timer(&entry->timer); | |
2268 | memcpy(entry->mac_addr, src, ETH_ALEN); | |
2269 | entry->status = ESI_FORWARD_DIRECT; | |
2270 | entry->last_used = jiffies; | |
2271 | /* We might have got an entry */ | |
c48192a7 JP |
2272 | tmp = lec_arp_find(priv, src); |
2273 | if (tmp) { | |
d0732f64 | 2274 | lec_arp_remove(priv, tmp); |
33a9c2d4 | 2275 | lec_arp_put(tmp); |
d0732f64 CW |
2276 | } |
2277 | hlist_del(&entry->next); | |
2278 | lec_arp_add(priv, entry); | |
2279 | goto out; | |
1fa9961d | 2280 | } |
1fa9961d | 2281 | } |
52240062 | 2282 | pr_debug("LEC_ARP: Arp_check_empties: entry not found!\n"); |
1da177e4 LT |
2283 | out: |
2284 | spin_unlock_irqrestore(&priv->lec_arp_lock, flags); | |
2285 | } | |
1fa9961d | 2286 | |
1da177e4 | 2287 | MODULE_LICENSE("GPL"); |