2 * lec.c: Lan Emulation driver
4 * Marko Kiiskila <mkiiskila@yahoo.com>
7 #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
9 #include <linux/slab.h>
10 #include <linux/kernel.h>
11 #include <linux/bitops.h>
12 #include <linux/capability.h>
14 /* We are ethernet device */
15 #include <linux/if_ether.h>
16 #include <linux/netdevice.h>
17 #include <linux/etherdevice.h>
19 #include <linux/skbuff.h>
21 #include <asm/byteorder.h>
22 #include <linux/uaccess.h>
25 #include <linux/proc_fs.h>
26 #include <linux/spinlock.h>
27 #include <linux/seq_file.h>
29 /* TokenRing if needed */
31 #include <linux/trdevice.h>
35 #include <linux/atmdev.h>
36 #include <linux/atmlec.h>
38 /* Proxy LEC knows about bridging */
39 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
40 #include "../bridge/br_private.h"
42 static unsigned char bridge_ula_lec[] = { 0x01, 0x80, 0xc2, 0x00, 0x00 };
46 #include <linux/module.h>
47 #include <linux/init.h>
51 #include "resources.h"
53 #define DUMP_PACKETS 0 /*
59 #define LEC_UNRES_QUE_LEN 8 /*
60 * number of tx packets to queue for a
61 * single destination while waiting for SVC
64 static int lec_open(struct net_device *dev);
65 static netdev_tx_t lec_start_xmit(struct sk_buff *skb,
66 struct net_device *dev);
67 static int lec_close(struct net_device *dev);
68 static struct lec_arp_table *lec_arp_find(struct lec_priv *priv,
69 const unsigned char *mac_addr);
70 static int lec_arp_remove(struct lec_priv *priv,
71 struct lec_arp_table *to_remove);
73 static void lane2_associate_ind(struct net_device *dev, const u8 *mac_address,
74 const u8 *tlvs, u32 sizeoftlvs);
75 static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force,
76 u8 **tlvs, u32 *sizeoftlvs);
77 static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst,
78 const u8 *tlvs, u32 sizeoftlvs);
80 static int lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr,
81 unsigned long permanent);
82 static void lec_arp_check_empties(struct lec_priv *priv,
83 struct atm_vcc *vcc, struct sk_buff *skb);
84 static void lec_arp_destroy(struct lec_priv *priv);
85 static void lec_arp_init(struct lec_priv *priv);
86 static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv,
87 const unsigned char *mac_to_find,
89 struct lec_arp_table **ret_entry);
90 static void lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr,
91 const unsigned char *atm_addr,
92 unsigned long remoteflag,
93 unsigned int targetless_le_arp);
94 static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id);
95 static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc);
96 static void lec_set_flush_tran_id(struct lec_priv *priv,
97 const unsigned char *atm_addr,
98 unsigned long tran_id);
99 static void lec_vcc_added(struct lec_priv *priv,
100 const struct atmlec_ioc *ioc_data,
102 void (*old_push)(struct atm_vcc *vcc,
103 struct sk_buff *skb));
104 static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc);
106 /* must be done under lec_arp_lock */
107 static inline void lec_arp_hold(struct lec_arp_table *entry)
109 atomic_inc(&entry->usage);
112 static inline void lec_arp_put(struct lec_arp_table *entry)
114 if (atomic_dec_and_test(&entry->usage))
118 static struct lane2_ops lane2_ops = {
119 lane2_resolve, /* resolve, spec 3.1.3 */
120 lane2_associate_req, /* associate_req, spec 3.1.4 */
121 NULL /* associate indicator, spec 3.1.5 */
124 static unsigned char bus_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
126 /* Device structures */
127 static struct net_device *dev_lec[MAX_LEC_ITF];
129 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
130 static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev)
133 struct lec_priv *priv;
136 * Check if this is a BPDU. If so, ask zeppelin to send
137 * LE_TOPOLOGY_REQUEST with the same value of Topology Change bit
138 * as the Config BPDU has
140 buff = skb->data + skb->dev->hard_header_len;
141 if (*buff++ == 0x42 && *buff++ == 0x42 && *buff++ == 0x03) {
143 struct sk_buff *skb2;
144 struct atmlec_msg *mesg;
146 skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
149 skb2->len = sizeof(struct atmlec_msg);
150 mesg = (struct atmlec_msg *)skb2->data;
151 mesg->type = l_topology_change;
153 mesg->content.normal.flag = *buff & 0x01;
154 /* 0x01 is topology change */
156 priv = netdev_priv(dev);
157 atm_force_charge(priv->lecd, skb2->truesize);
158 sk = sk_atm(priv->lecd);
159 skb_queue_tail(&sk->sk_receive_queue, skb2);
160 sk->sk_data_ready(sk, skb2->len);
163 #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
166 * Modelled after tr_type_trans
167 * All multicast and ARE or STE frames go to BUS.
168 * Non source routed frames go by destination address.
169 * Last hop source routed frames go by destination address.
170 * Not last hop source routed frames go by _next_ route descriptor.
171 * Returns pointer to destination MAC address or fills in rdesc
175 static unsigned char *get_tr_dst(unsigned char *packet, unsigned char *rdesc)
178 unsigned int riflen, num_rdsc;
180 trh = (struct trh_hdr *)packet;
181 if (trh->daddr[0] & (uint8_t) 0x80)
182 return bus_mac; /* multicast */
184 if (trh->saddr[0] & TR_RII) {
185 riflen = (ntohs(trh->rcf) & TR_RCF_LEN_MASK) >> 8;
186 if ((ntohs(trh->rcf) >> 13) != 0)
187 return bus_mac; /* ARE or STE */
189 return trh->daddr; /* not source routed */
192 return trh->daddr; /* last hop, source routed */
194 /* riflen is 6 or more, packet has more than one route descriptor */
195 num_rdsc = (riflen / 2) - 1;
196 memset(rdesc, 0, ETH_ALEN);
197 /* offset 4 comes from LAN destination field in LE control frames */
198 if (trh->rcf & htons((uint16_t) TR_RCF_DIR_BIT))
199 memcpy(&rdesc[4], &trh->rseg[num_rdsc - 2], sizeof(__be16));
201 memcpy(&rdesc[4], &trh->rseg[1], sizeof(__be16));
202 rdesc[5] = ((ntohs(trh->rseg[0]) & 0x000f) | (rdesc[5] & 0xf0));
207 #endif /* CONFIG_TR */
210 * Open/initialize the netdevice. This is called (in the current kernel)
211 * sometime after booting when the 'ifconfig' program is run.
213 * This routine should set everything up anew at each open, even
214 * registers that "should" only need to be set once at boot, so that
215 * there is non-reboot way to recover if something goes wrong.
218 static int lec_open(struct net_device *dev)
220 netif_start_queue(dev);
226 lec_send(struct atm_vcc *vcc, struct sk_buff *skb)
228 struct net_device *dev = skb->dev;
230 ATM_SKB(skb)->vcc = vcc;
231 ATM_SKB(skb)->atm_options = vcc->atm_options;
233 atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
234 if (vcc->send(vcc, skb) < 0) {
235 dev->stats.tx_dropped++;
239 dev->stats.tx_packets++;
240 dev->stats.tx_bytes += skb->len;
243 static void lec_tx_timeout(struct net_device *dev)
245 pr_info("%s\n", dev->name);
246 dev->trans_start = jiffies;
247 netif_wake_queue(dev);
250 static netdev_tx_t lec_start_xmit(struct sk_buff *skb,
251 struct net_device *dev)
253 struct sk_buff *skb2;
254 struct lec_priv *priv = netdev_priv(dev);
255 struct lecdatahdr_8023 *lec_h;
257 struct lec_arp_table *entry;
261 unsigned char rdesc[ETH_ALEN]; /* Token Ring route descriptor */
265 pr_debug("called\n");
267 pr_info("%s:No lecd attached\n", dev->name);
268 dev->stats.tx_errors++;
269 netif_stop_queue(dev);
274 pr_debug("skbuff head:%lx data:%lx tail:%lx end:%lx\n",
275 (long)skb->head, (long)skb->data, (long)skb_tail_pointer(skb),
276 (long)skb_end_pointer(skb));
277 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
278 if (memcmp(skb->data, bridge_ula_lec, sizeof(bridge_ula_lec)) == 0)
279 lec_handle_bridge(skb, dev);
282 /* Make sure we have room for lec_id */
283 if (skb_headroom(skb) < 2) {
284 pr_debug("reallocating skb\n");
285 skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
293 /* Put le header to place, works for TokenRing too */
294 lec_h = (struct lecdatahdr_8023 *)skb->data;
295 lec_h->le_header = htons(priv->lecid);
299 * Ugly. Use this to realign Token Ring packets for
300 * e.g. PCA-200E driver.
302 if (priv->is_trdev) {
303 skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
311 #if DUMP_PACKETS >= 2
312 #define MAX_DUMP_SKB 99
313 #elif DUMP_PACKETS >= 1
314 #define MAX_DUMP_SKB 30
316 #if DUMP_PACKETS >= 1
317 printk(KERN_DEBUG "%s: send datalen:%ld lecid:%4.4x\n",
318 dev->name, skb->len, priv->lecid);
319 print_hex_dump(KERN_DEBUG, "", DUMP_OFFSET, 16, 1,
320 skb->data, min(skb->len, MAX_DUMP_SKB), true);
321 #endif /* DUMP_PACKETS >= 1 */
323 /* Minimum ethernet-frame size */
326 min_frame_size = LEC_MINIMUM_8025_SIZE;
329 min_frame_size = LEC_MINIMUM_8023_SIZE;
330 if (skb->len < min_frame_size) {
331 if ((skb->len + skb_tailroom(skb)) < min_frame_size) {
332 skb2 = skb_copy_expand(skb, 0,
333 min_frame_size - skb->truesize,
337 dev->stats.tx_dropped++;
342 skb_put(skb, min_frame_size - skb->len);
345 /* Send to right vcc */
349 if (priv->is_trdev) {
350 dst = get_tr_dst(skb->data + 2, rdesc);
358 vcc = lec_arp_resolve(priv, dst, is_rdesc, &entry);
359 pr_debug("%s:vcc:%p vcc_flags:%lx, entry:%p\n",
360 dev->name, vcc, vcc ? vcc->flags : 0, entry);
361 if (!vcc || !test_bit(ATM_VF_READY, &vcc->flags)) {
362 if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) {
363 pr_debug("%s:queuing packet, MAC address %pM\n",
364 dev->name, lec_h->h_dest);
365 skb_queue_tail(&entry->tx_wait, skb);
367 pr_debug("%s:tx queue full or no arp entry, dropping, MAC address: %pM\n",
368 dev->name, lec_h->h_dest);
369 dev->stats.tx_dropped++;
375 printk(KERN_DEBUG "%s:sending to vpi:%d vci:%d\n",
376 dev->name, vcc->vpi, vcc->vci);
377 #endif /* DUMP_PACKETS > 0 */
379 while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) {
380 pr_debug("emptying tx queue, MAC address %pM\n", lec_h->h_dest);
386 if (!atm_may_send(vcc, 0)) {
387 struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
390 netif_stop_queue(dev);
393 * vcc->pop() might have occurred in between, making
394 * the vcc usuable again. Since xmit is serialized,
395 * this is the only situation we have to re-test.
398 if (atm_may_send(vcc, 0))
399 netif_wake_queue(dev);
405 dev->trans_start = jiffies;
409 /* The inverse routine to net_open(). */
410 static int lec_close(struct net_device *dev)
412 netif_stop_queue(dev);
416 static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
419 struct net_device *dev = (struct net_device *)vcc->proto_data;
420 struct lec_priv *priv = netdev_priv(dev);
421 struct atmlec_msg *mesg;
422 struct lec_arp_table *entry;
424 char *tmp; /* FIXME */
426 atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
427 mesg = (struct atmlec_msg *)skb->data;
429 tmp += sizeof(struct atmlec_msg);
430 pr_debug("%s: msg from zeppelin:%d\n", dev->name, mesg->type);
431 switch (mesg->type) {
433 for (i = 0; i < 6; i++)
434 dev->dev_addr[i] = mesg->content.normal.mac_addr[i];
437 for (i = 0; i < 6; i++)
438 dev->dev_addr[i] = 0;
441 lec_addr_delete(priv, mesg->content.normal.atm_addr,
442 mesg->content.normal.flag);
444 case l_topology_change:
445 priv->topology_change = mesg->content.normal.flag;
447 case l_flush_complete:
448 lec_flush_complete(priv, mesg->content.normal.flag);
450 case l_narp_req: /* LANE2: see 7.1.35 in the lane2 spec */
451 spin_lock_irqsave(&priv->lec_arp_lock, flags);
452 entry = lec_arp_find(priv, mesg->content.normal.mac_addr);
453 lec_arp_remove(priv, entry);
454 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
456 if (mesg->content.normal.no_source_le_narp)
460 lec_arp_update(priv, mesg->content.normal.mac_addr,
461 mesg->content.normal.atm_addr,
462 mesg->content.normal.flag,
463 mesg->content.normal.targetless_le_arp);
464 pr_debug("in l_arp_update\n");
465 if (mesg->sizeoftlvs != 0) { /* LANE2 3.1.5 */
466 pr_debug("LANE2 3.1.5, got tlvs, size %d\n",
468 lane2_associate_ind(dev, mesg->content.normal.mac_addr,
469 tmp, mesg->sizeoftlvs);
473 priv->maximum_unknown_frame_count =
474 mesg->content.config.maximum_unknown_frame_count;
475 priv->max_unknown_frame_time =
476 (mesg->content.config.max_unknown_frame_time * HZ);
477 priv->max_retry_count = mesg->content.config.max_retry_count;
478 priv->aging_time = (mesg->content.config.aging_time * HZ);
479 priv->forward_delay_time =
480 (mesg->content.config.forward_delay_time * HZ);
481 priv->arp_response_time =
482 (mesg->content.config.arp_response_time * HZ);
483 priv->flush_timeout = (mesg->content.config.flush_timeout * HZ);
484 priv->path_switching_delay =
485 (mesg->content.config.path_switching_delay * HZ);
486 priv->lane_version = mesg->content.config.lane_version;
488 priv->lane2_ops = NULL;
489 if (priv->lane_version > 1)
490 priv->lane2_ops = &lane2_ops;
491 if (dev_set_mtu(dev, mesg->content.config.mtu))
492 pr_info("%s: change_mtu to %d failed\n",
493 dev->name, mesg->content.config.mtu);
494 priv->is_proxy = mesg->content.config.is_proxy;
496 case l_flush_tran_id:
497 lec_set_flush_tran_id(priv, mesg->content.normal.atm_addr,
498 mesg->content.normal.flag);
502 (unsigned short)(0xffff & mesg->content.normal.flag);
504 case l_should_bridge:
505 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
507 pr_debug("%s: bridge zeppelin asks about %pM\n",
508 dev->name, mesg->content.proxy.mac_addr);
510 if (br_fdb_test_addr_hook == NULL)
513 if (br_fdb_test_addr_hook(dev, mesg->content.proxy.mac_addr)) {
514 /* hit from bridge table, send LE_ARP_RESPONSE */
515 struct sk_buff *skb2;
518 pr_debug("%s: entry found, responding to zeppelin\n",
520 skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
523 skb2->len = sizeof(struct atmlec_msg);
524 skb_copy_to_linear_data(skb2, mesg, sizeof(*mesg));
525 atm_force_charge(priv->lecd, skb2->truesize);
526 sk = sk_atm(priv->lecd);
527 skb_queue_tail(&sk->sk_receive_queue, skb2);
528 sk->sk_data_ready(sk, skb2->len);
531 #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
534 pr_info("%s: Unknown message type %d\n", dev->name, mesg->type);
542 static void lec_atm_close(struct atm_vcc *vcc)
545 struct net_device *dev = (struct net_device *)vcc->proto_data;
546 struct lec_priv *priv = netdev_priv(dev);
549 /* Do something needful? */
551 netif_stop_queue(dev);
552 lec_arp_destroy(priv);
554 if (skb_peek(&sk_atm(vcc)->sk_receive_queue))
555 pr_info("%s closing with messages pending\n", dev->name);
556 while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue))) {
557 atm_return(vcc, skb->truesize);
561 pr_info("%s: Shut down!\n", dev->name);
562 module_put(THIS_MODULE);
565 static struct atmdev_ops lecdev_ops = {
566 .close = lec_atm_close,
570 static struct atm_dev lecatm_dev = {
573 .number = 999, /* dummy device number */
574 .lock = __SPIN_LOCK_UNLOCKED(lecatm_dev.lock)
578 * LANE2: new argument struct sk_buff *data contains
579 * the LE_ARP based TLVs introduced in the LANE2 spec
582 send_to_lecd(struct lec_priv *priv, atmlec_msg_type type,
583 const unsigned char *mac_addr, const unsigned char *atm_addr,
584 struct sk_buff *data)
588 struct atmlec_msg *mesg;
590 if (!priv || !priv->lecd)
592 skb = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
595 skb->len = sizeof(struct atmlec_msg);
596 mesg = (struct atmlec_msg *)skb->data;
597 memset(mesg, 0, sizeof(struct atmlec_msg));
600 mesg->sizeoftlvs = data->len;
602 memcpy(&mesg->content.normal.mac_addr, mac_addr, ETH_ALEN);
604 mesg->content.normal.targetless_le_arp = 1;
606 memcpy(&mesg->content.normal.atm_addr, atm_addr, ATM_ESA_LEN);
608 atm_force_charge(priv->lecd, skb->truesize);
609 sk = sk_atm(priv->lecd);
610 skb_queue_tail(&sk->sk_receive_queue, skb);
611 sk->sk_data_ready(sk, skb->len);
614 pr_debug("about to send %d bytes of data\n", data->len);
615 atm_force_charge(priv->lecd, data->truesize);
616 skb_queue_tail(&sk->sk_receive_queue, data);
617 sk->sk_data_ready(sk, skb->len);
623 /* shamelessly stolen from drivers/net/net_init.c */
624 static int lec_change_mtu(struct net_device *dev, int new_mtu)
626 if ((new_mtu < 68) || (new_mtu > 18190))
632 static void lec_set_multicast_list(struct net_device *dev)
635 * by default, all multicast frames arrive over the bus.
636 * eventually support selective multicast service
640 static const struct net_device_ops lec_netdev_ops = {
641 .ndo_open = lec_open,
642 .ndo_stop = lec_close,
643 .ndo_start_xmit = lec_start_xmit,
644 .ndo_change_mtu = lec_change_mtu,
645 .ndo_tx_timeout = lec_tx_timeout,
646 .ndo_set_rx_mode = lec_set_multicast_list,
649 static const unsigned char lec_ctrl_magic[] = {
656 #define LEC_DATA_DIRECT_8023 2
657 #define LEC_DATA_DIRECT_8025 3
659 static int lec_is_data_direct(struct atm_vcc *vcc)
661 return ((vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8023) ||
662 (vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8025));
665 static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb)
668 struct net_device *dev = (struct net_device *)vcc->proto_data;
669 struct lec_priv *priv = netdev_priv(dev);
672 printk(KERN_DEBUG "%s: vcc vpi:%d vci:%d\n",
673 dev->name, vcc->vpi, vcc->vci);
676 pr_debug("%s: null skb\n", dev->name);
677 lec_vcc_close(priv, vcc);
680 #if DUMP_PACKETS >= 2
681 #define MAX_SKB_DUMP 99
682 #elif DUMP_PACKETS >= 1
683 #define MAX_SKB_DUMP 30
686 printk(KERN_DEBUG "%s: rcv datalen:%ld lecid:%4.4x\n",
687 dev->name, skb->len, priv->lecid);
688 print_hex_dump(KERN_DEBUG, "", DUMP_OFFSET, 16, 1,
689 skb->data, min(MAX_SKB_DUMP, skb->len), true);
690 #endif /* DUMP_PACKETS > 0 */
691 if (memcmp(skb->data, lec_ctrl_magic, 4) == 0) {
692 /* Control frame, to daemon */
693 struct sock *sk = sk_atm(vcc);
695 pr_debug("%s: To daemon\n", dev->name);
696 skb_queue_tail(&sk->sk_receive_queue, skb);
697 sk->sk_data_ready(sk, skb->len);
698 } else { /* Data frame, queue to protocol handlers */
699 struct lec_arp_table *entry;
700 unsigned char *src, *dst;
702 atm_return(vcc, skb->truesize);
703 if (*(__be16 *) skb->data == htons(priv->lecid) ||
704 !priv->lecd || !(dev->flags & IFF_UP)) {
706 * Probably looping back, or if lecd is missing,
709 pr_debug("Ignoring frame...\n");
715 dst = ((struct lecdatahdr_8025 *)skb->data)->h_dest;
718 dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest;
721 * If this is a Data Direct VCC, and the VCC does not match
722 * the LE_ARP cache entry, delete the LE_ARP cache entry.
724 spin_lock_irqsave(&priv->lec_arp_lock, flags);
725 if (lec_is_data_direct(vcc)) {
729 ((struct lecdatahdr_8025 *)skb->data)->
734 ((struct lecdatahdr_8023 *)skb->data)->
736 entry = lec_arp_find(priv, src);
737 if (entry && entry->vcc != vcc) {
738 lec_arp_remove(priv, entry);
742 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
744 if (!(dst[0] & 0x01) && /* Never filter Multi/Broadcast */
745 !priv->is_proxy && /* Proxy wants all the packets */
746 memcmp(dst, dev->dev_addr, dev->addr_len)) {
750 if (!hlist_empty(&priv->lec_arp_empty_ones))
751 lec_arp_check_empties(priv, vcc, skb);
752 skb_pull(skb, 2); /* skip lec_id */
755 skb->protocol = tr_type_trans(skb, dev);
758 skb->protocol = eth_type_trans(skb, dev);
759 dev->stats.rx_packets++;
760 dev->stats.rx_bytes += skb->len;
761 memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
766 static void lec_pop(struct atm_vcc *vcc, struct sk_buff *skb)
768 struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
769 struct net_device *dev = skb->dev;
772 pr_info("vpriv = NULL!?!?!?\n");
776 vpriv->old_pop(vcc, skb);
778 if (vpriv->xoff && atm_may_send(vcc, 0)) {
780 if (netif_running(dev) && netif_queue_stopped(dev))
781 netif_wake_queue(dev);
785 static int lec_vcc_attach(struct atm_vcc *vcc, void __user *arg)
787 struct lec_vcc_priv *vpriv;
789 struct atmlec_ioc ioc_data;
791 /* Lecd must be up in this case */
792 bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmlec_ioc));
794 pr_info("copy from user failed for %d bytes\n", bytes_left);
795 if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF ||
796 !dev_lec[ioc_data.dev_num])
798 vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL);
802 vpriv->old_pop = vcc->pop;
803 vcc->user_back = vpriv;
805 lec_vcc_added(netdev_priv(dev_lec[ioc_data.dev_num]),
806 &ioc_data, vcc, vcc->push);
807 vcc->proto_data = dev_lec[ioc_data.dev_num];
808 vcc->push = lec_push;
812 static int lec_mcast_attach(struct atm_vcc *vcc, int arg)
814 if (arg < 0 || arg >= MAX_LEC_ITF || !dev_lec[arg])
816 vcc->proto_data = dev_lec[arg];
817 return lec_mcast_make(netdev_priv(dev_lec[arg]), vcc);
820 /* Initialize device. */
821 static int lecd_attach(struct atm_vcc *vcc, int arg)
824 struct lec_priv *priv;
831 if (arg >= MAX_LEC_ITF)
833 #else /* Reserve the top NUM_TR_DEVS for TR */
834 if (arg >= (MAX_LEC_ITF - NUM_TR_DEVS))
841 if (i >= (MAX_LEC_ITF - NUM_TR_DEVS))
844 size = sizeof(struct lec_priv);
847 dev_lec[i] = alloc_trdev(size);
850 dev_lec[i] = alloc_etherdev(size);
853 dev_lec[i]->netdev_ops = &lec_netdev_ops;
854 snprintf(dev_lec[i]->name, IFNAMSIZ, "lec%d", i);
855 if (register_netdev(dev_lec[i])) {
856 free_netdev(dev_lec[i]);
860 priv = netdev_priv(dev_lec[i]);
861 priv->is_trdev = is_trdev;
863 priv = netdev_priv(dev_lec[i]);
868 priv->itfnum = i; /* LANE2 addition */
870 vcc->dev = &lecatm_dev;
871 vcc_insert_socket(sk_atm(vcc));
873 vcc->proto_data = dev_lec[i];
874 set_bit(ATM_VF_META, &vcc->flags);
875 set_bit(ATM_VF_READY, &vcc->flags);
877 /* Set default values to these variables */
878 priv->maximum_unknown_frame_count = 1;
879 priv->max_unknown_frame_time = (1 * HZ);
880 priv->vcc_timeout_period = (1200 * HZ);
881 priv->max_retry_count = 1;
882 priv->aging_time = (300 * HZ);
883 priv->forward_delay_time = (15 * HZ);
884 priv->topology_change = 0;
885 priv->arp_response_time = (1 * HZ);
886 priv->flush_timeout = (4 * HZ);
887 priv->path_switching_delay = (6 * HZ);
889 if (dev_lec[i]->flags & IFF_UP)
890 netif_start_queue(dev_lec[i]);
891 __module_get(THIS_MODULE);
895 #ifdef CONFIG_PROC_FS
896 static const char *lec_arp_get_status_string(unsigned char status)
898 static const char *const lec_arp_status_string[] = {
903 "ESI_FLUSH_PENDING ",
907 if (status > ESI_FORWARD_DIRECT)
908 status = 3; /* ESI_UNDEFINED */
909 return lec_arp_status_string[status];
912 static void lec_info(struct seq_file *seq, struct lec_arp_table *entry)
916 for (i = 0; i < ETH_ALEN; i++)
917 seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff);
918 seq_printf(seq, " ");
919 for (i = 0; i < ATM_ESA_LEN; i++)
920 seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff);
921 seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status),
922 entry->flags & 0xffff);
924 seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci);
926 seq_printf(seq, " ");
927 if (entry->recv_vcc) {
928 seq_printf(seq, " %3d %3d", entry->recv_vcc->vpi,
929 entry->recv_vcc->vci);
936 struct lec_priv *locked;
937 struct hlist_node *node;
938 struct net_device *dev;
944 static void *lec_tbl_walk(struct lec_state *state, struct hlist_head *tbl,
947 struct hlist_node *e = state->node;
948 struct lec_arp_table *tmp;
952 if (e == SEQ_START_TOKEN) {
957 hlist_for_each_entry_from(tmp, e, next) {
963 return (*l < 0) ? state : NULL;
966 static void *lec_arp_walk(struct lec_state *state, loff_t *l,
967 struct lec_priv *priv)
972 for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) {
973 v = lec_tbl_walk(state, &priv->lec_arp_tables[p], l);
977 state->arp_table = p;
981 static void *lec_misc_walk(struct lec_state *state, loff_t *l,
982 struct lec_priv *priv)
984 struct hlist_head *lec_misc_tables[] = {
985 &priv->lec_arp_empty_ones,
986 &priv->lec_no_forward,
992 for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) {
993 v = lec_tbl_walk(state, lec_misc_tables[q], l);
997 state->misc_table = q;
1001 static void *lec_priv_walk(struct lec_state *state, loff_t *l,
1002 struct lec_priv *priv)
1004 if (!state->locked) {
1005 state->locked = priv;
1006 spin_lock_irqsave(&priv->lec_arp_lock, state->flags);
1008 if (!lec_arp_walk(state, l, priv) && !lec_misc_walk(state, l, priv)) {
1009 spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags);
1010 state->locked = NULL;
1011 /* Partial state reset for the next time we get called */
1012 state->arp_table = state->misc_table = 0;
1014 return state->locked;
1017 static void *lec_itf_walk(struct lec_state *state, loff_t *l)
1019 struct net_device *dev;
1022 dev = state->dev ? state->dev : dev_lec[state->itf];
1023 v = (dev && netdev_priv(dev)) ?
1024 lec_priv_walk(state, l, netdev_priv(dev)) : NULL;
1027 /* Partial state reset for the next time we get called */
1034 static void *lec_get_idx(struct lec_state *state, loff_t l)
1038 for (; state->itf < MAX_LEC_ITF; state->itf++) {
1039 v = lec_itf_walk(state, &l);
1046 static void *lec_seq_start(struct seq_file *seq, loff_t *pos)
1048 struct lec_state *state = seq->private;
1052 state->locked = NULL;
1053 state->arp_table = 0;
1054 state->misc_table = 0;
1055 state->node = SEQ_START_TOKEN;
1057 return *pos ? lec_get_idx(state, *pos) : SEQ_START_TOKEN;
1060 static void lec_seq_stop(struct seq_file *seq, void *v)
1062 struct lec_state *state = seq->private;
1065 spin_unlock_irqrestore(&state->locked->lec_arp_lock,
1067 dev_put(state->dev);
1071 static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1073 struct lec_state *state = seq->private;
1075 v = lec_get_idx(state, 1);
1076 *pos += !!PTR_ERR(v);
1080 static int lec_seq_show(struct seq_file *seq, void *v)
1082 static const char lec_banner[] =
1083 "Itf MAC ATM destination"
1085 "VPI/VCI Recv VPI/VCI\n";
1087 if (v == SEQ_START_TOKEN)
1088 seq_puts(seq, lec_banner);
1090 struct lec_state *state = seq->private;
1091 struct net_device *dev = state->dev;
1092 struct lec_arp_table *entry = hlist_entry(state->node,
1093 struct lec_arp_table,
1096 seq_printf(seq, "%s ", dev->name);
1097 lec_info(seq, entry);
1102 static const struct seq_operations lec_seq_ops = {
1103 .start = lec_seq_start,
1104 .next = lec_seq_next,
1105 .stop = lec_seq_stop,
1106 .show = lec_seq_show,
1109 static int lec_seq_open(struct inode *inode, struct file *file)
1111 return seq_open_private(file, &lec_seq_ops, sizeof(struct lec_state));
1114 static const struct file_operations lec_seq_fops = {
1115 .owner = THIS_MODULE,
1116 .open = lec_seq_open,
1118 .llseek = seq_lseek,
1119 .release = seq_release_private,
1123 static int lane_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
1125 struct atm_vcc *vcc = ATM_SD(sock);
1132 if (!capable(CAP_NET_ADMIN))
1136 return -ENOIOCTLCMD;
1141 err = lecd_attach(vcc, (int)arg);
1143 sock->state = SS_CONNECTED;
1146 err = lec_mcast_attach(vcc, (int)arg);
1149 err = lec_vcc_attach(vcc, (void __user *)arg);
1156 static struct atm_ioctl lane_ioctl_ops = {
1157 .owner = THIS_MODULE,
1158 .ioctl = lane_ioctl,
1161 static int __init lane_module_init(void)
1163 #ifdef CONFIG_PROC_FS
1164 struct proc_dir_entry *p;
1166 p = proc_create("lec", S_IRUGO, atm_proc_root, &lec_seq_fops);
1168 pr_err("Unable to initialize /proc/net/atm/lec\n");
1173 register_atm_ioctl(&lane_ioctl_ops);
1174 pr_info("lec.c: initialized\n");
1178 static void __exit lane_module_cleanup(void)
1182 remove_proc_entry("lec", atm_proc_root);
1184 deregister_atm_ioctl(&lane_ioctl_ops);
1186 for (i = 0; i < MAX_LEC_ITF; i++) {
1187 if (dev_lec[i] != NULL) {
1188 unregister_netdev(dev_lec[i]);
1189 free_netdev(dev_lec[i]);
1195 module_init(lane_module_init);
1196 module_exit(lane_module_cleanup);
1199 * LANE2: 3.1.3, LE_RESOLVE.request
1200 * Non force allocates memory and fills in *tlvs, fills in *sizeoftlvs.
1201 * If sizeoftlvs == NULL the default TLVs associated with with this
1203 * If dst_mac == NULL, targetless LE_ARP will be sent
1205 static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force,
1206 u8 **tlvs, u32 *sizeoftlvs)
1208 unsigned long flags;
1209 struct lec_priv *priv = netdev_priv(dev);
1210 struct lec_arp_table *table;
1211 struct sk_buff *skb;
1215 spin_lock_irqsave(&priv->lec_arp_lock, flags);
1216 table = lec_arp_find(priv, dst_mac);
1217 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
1221 *tlvs = kmemdup(table->tlvs, table->sizeoftlvs, GFP_ATOMIC);
1225 *sizeoftlvs = table->sizeoftlvs;
1230 if (sizeoftlvs == NULL)
1231 retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, NULL);
1234 skb = alloc_skb(*sizeoftlvs, GFP_ATOMIC);
1237 skb->len = *sizeoftlvs;
1238 skb_copy_to_linear_data(skb, *tlvs, *sizeoftlvs);
1239 retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb);
1245 * LANE2: 3.1.4, LE_ASSOCIATE.request
1246 * Associate the *tlvs with the *lan_dst address.
1247 * Will overwrite any previous association
1248 * Returns 1 for success, 0 for failure (out of memory)
1251 static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst,
1252 const u8 *tlvs, u32 sizeoftlvs)
1255 struct sk_buff *skb;
1256 struct lec_priv *priv = netdev_priv(dev);
1258 if (!ether_addr_equal(lan_dst, dev->dev_addr))
1259 return 0; /* not our mac address */
1261 kfree(priv->tlvs); /* NULL if there was no previous association */
1263 priv->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL);
1264 if (priv->tlvs == NULL)
1266 priv->sizeoftlvs = sizeoftlvs;
1268 skb = alloc_skb(sizeoftlvs, GFP_ATOMIC);
1271 skb->len = sizeoftlvs;
1272 skb_copy_to_linear_data(skb, tlvs, sizeoftlvs);
1273 retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb);
1275 pr_info("lec.c: lane2_associate_req() failed\n");
1277 * If the previous association has changed we must
1278 * somehow notify other LANE entities about the change
1284 * LANE2: 3.1.5, LE_ASSOCIATE.indication
1287 static void lane2_associate_ind(struct net_device *dev, const u8 *mac_addr,
1288 const u8 *tlvs, u32 sizeoftlvs)
1293 struct lec_priv *priv = netdev_priv(dev);
1295 * Why have the TLVs in LE_ARP entries
1296 * since we do not use them? When you
1297 * uncomment this code, make sure the
1298 * TLVs get freed when entry is killed
1300 struct lec_arp_table *entry = lec_arp_find(priv, mac_addr);
1303 return; /* should not happen */
1307 entry->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL);
1308 if (entry->tlvs == NULL)
1310 entry->sizeoftlvs = sizeoftlvs;
1314 pr_info("dump of tlvs, sizeoftlvs=%d\n", sizeoftlvs);
1315 while (i < sizeoftlvs)
1316 pr_cont("%02x ", tlvs[i++]);
1321 /* tell MPOA about the TLVs we saw */
1322 if (priv->lane2_ops && priv->lane2_ops->associate_indicator) {
1323 priv->lane2_ops->associate_indicator(dev, mac_addr,
1329 * Here starts what used to lec_arpc.c
1331 * lec_arpc.c was added here when making
1332 * lane client modular. October 1997
1335 #include <linux/types.h>
1336 #include <linux/timer.h>
1337 #include <linux/param.h>
1338 #include <linux/atomic.h>
1339 #include <linux/inetdevice.h>
1340 #include <net/route.h>
1343 #define pr_debug(format, args...)
1345 #define pr_debug printk
1348 #define DEBUG_ARP_TABLE 0
1350 #define LEC_ARP_REFRESH_INTERVAL (3*HZ)
1352 static void lec_arp_check_expire(struct work_struct *work);
1353 static void lec_arp_expire_arp(unsigned long data);
1359 #define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE - 1))
1362 * Initialization of arp-cache
1364 static void lec_arp_init(struct lec_priv *priv)
1368 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++)
1369 INIT_HLIST_HEAD(&priv->lec_arp_tables[i]);
1370 INIT_HLIST_HEAD(&priv->lec_arp_empty_ones);
1371 INIT_HLIST_HEAD(&priv->lec_no_forward);
1372 INIT_HLIST_HEAD(&priv->mcast_fwds);
1373 spin_lock_init(&priv->lec_arp_lock);
1374 INIT_DELAYED_WORK(&priv->lec_arp_work, lec_arp_check_expire);
1375 schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL);
1378 static void lec_arp_clear_vccs(struct lec_arp_table *entry)
1381 struct atm_vcc *vcc = entry->vcc;
1382 struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
1383 struct net_device *dev = (struct net_device *)vcc->proto_data;
1385 vcc->pop = vpriv->old_pop;
1387 netif_wake_queue(dev);
1389 vcc->user_back = NULL;
1390 vcc->push = entry->old_push;
1391 vcc_release_async(vcc, -EPIPE);
1394 if (entry->recv_vcc) {
1395 entry->recv_vcc->push = entry->old_recv_push;
1396 vcc_release_async(entry->recv_vcc, -EPIPE);
1397 entry->recv_vcc = NULL;
1402 * Insert entry to lec_arp_table
1403 * LANE2: Add to the end of the list to satisfy 8.1.13
1406 lec_arp_add(struct lec_priv *priv, struct lec_arp_table *entry)
1408 struct hlist_head *tmp;
1410 tmp = &priv->lec_arp_tables[HASH(entry->mac_addr[ETH_ALEN - 1])];
1411 hlist_add_head(&entry->next, tmp);
1413 pr_debug("Added entry:%pM\n", entry->mac_addr);
1417 * Remove entry from lec_arp_table
1420 lec_arp_remove(struct lec_priv *priv, struct lec_arp_table *to_remove)
1422 struct hlist_node *node;
1423 struct lec_arp_table *entry;
1424 int i, remove_vcc = 1;
1429 hlist_del(&to_remove->next);
1430 del_timer(&to_remove->timer);
1433 * If this is the only MAC connected to this VCC,
1434 * also tear down the VCC
1436 if (to_remove->status >= ESI_FLUSH_PENDING) {
1438 * ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT
1440 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
1441 hlist_for_each_entry(entry, node,
1442 &priv->lec_arp_tables[i], next) {
1443 if (memcmp(to_remove->atm_addr,
1444 entry->atm_addr, ATM_ESA_LEN) == 0) {
1451 lec_arp_clear_vccs(to_remove);
1453 skb_queue_purge(&to_remove->tx_wait); /* FIXME: good place for this? */
1455 pr_debug("Removed entry:%pM\n", to_remove->mac_addr);
1460 static const char *get_status_string(unsigned char st)
1464 return "ESI_UNKNOWN";
1465 case ESI_ARP_PENDING:
1466 return "ESI_ARP_PENDING";
1467 case ESI_VC_PENDING:
1468 return "ESI_VC_PENDING";
1469 case ESI_FLUSH_PENDING:
1470 return "ESI_FLUSH_PENDING";
1471 case ESI_FORWARD_DIRECT:
1472 return "ESI_FORWARD_DIRECT";
1477 static void dump_arp_table(struct lec_priv *priv)
1479 struct hlist_node *node;
1480 struct lec_arp_table *rulla;
1484 pr_info("Dump %p:\n", priv);
1485 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
1486 hlist_for_each_entry(rulla, node,
1487 &priv->lec_arp_tables[i], next) {
1489 offset += sprintf(buf, "%d: %p\n", i, rulla);
1490 offset += sprintf(buf + offset, "Mac: %pM",
1492 offset += sprintf(buf + offset, " Atm:");
1493 for (j = 0; j < ATM_ESA_LEN; j++) {
1494 offset += sprintf(buf + offset,
1496 rulla->atm_addr[j] & 0xff);
1498 offset += sprintf(buf + offset,
1499 "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
1500 rulla->vcc ? rulla->vcc->vpi : 0,
1501 rulla->vcc ? rulla->vcc->vci : 0,
1502 rulla->recv_vcc ? rulla->recv_vcc->
1504 rulla->recv_vcc ? rulla->recv_vcc->
1505 vci : 0, rulla->last_used,
1506 rulla->timestamp, rulla->no_tries);
1508 sprintf(buf + offset,
1509 "Flags:%x, Packets_flooded:%x, Status: %s ",
1510 rulla->flags, rulla->packets_flooded,
1511 get_status_string(rulla->status));
1512 pr_info("%s\n", buf);
1516 if (!hlist_empty(&priv->lec_no_forward))
1517 pr_info("No forward\n");
1518 hlist_for_each_entry(rulla, node, &priv->lec_no_forward, next) {
1520 offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr);
1521 offset += sprintf(buf + offset, " Atm:");
1522 for (j = 0; j < ATM_ESA_LEN; j++) {
1523 offset += sprintf(buf + offset, "%2.2x ",
1524 rulla->atm_addr[j] & 0xff);
1526 offset += sprintf(buf + offset,
1527 "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
1528 rulla->vcc ? rulla->vcc->vpi : 0,
1529 rulla->vcc ? rulla->vcc->vci : 0,
1530 rulla->recv_vcc ? rulla->recv_vcc->vpi : 0,
1531 rulla->recv_vcc ? rulla->recv_vcc->vci : 0,
1533 rulla->timestamp, rulla->no_tries);
1534 offset += sprintf(buf + offset,
1535 "Flags:%x, Packets_flooded:%x, Status: %s ",
1536 rulla->flags, rulla->packets_flooded,
1537 get_status_string(rulla->status));
1538 pr_info("%s\n", buf);
1541 if (!hlist_empty(&priv->lec_arp_empty_ones))
1542 pr_info("Empty ones\n");
1543 hlist_for_each_entry(rulla, node, &priv->lec_arp_empty_ones, next) {
1545 offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr);
1546 offset += sprintf(buf + offset, " Atm:");
1547 for (j = 0; j < ATM_ESA_LEN; j++) {
1548 offset += sprintf(buf + offset, "%2.2x ",
1549 rulla->atm_addr[j] & 0xff);
1551 offset += sprintf(buf + offset,
1552 "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
1553 rulla->vcc ? rulla->vcc->vpi : 0,
1554 rulla->vcc ? rulla->vcc->vci : 0,
1555 rulla->recv_vcc ? rulla->recv_vcc->vpi : 0,
1556 rulla->recv_vcc ? rulla->recv_vcc->vci : 0,
1558 rulla->timestamp, rulla->no_tries);
1559 offset += sprintf(buf + offset,
1560 "Flags:%x, Packets_flooded:%x, Status: %s ",
1561 rulla->flags, rulla->packets_flooded,
1562 get_status_string(rulla->status));
1566 if (!hlist_empty(&priv->mcast_fwds))
1567 pr_info("Multicast Forward VCCs\n");
1568 hlist_for_each_entry(rulla, node, &priv->mcast_fwds, next) {
1570 offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr);
1571 offset += sprintf(buf + offset, " Atm:");
1572 for (j = 0; j < ATM_ESA_LEN; j++) {
1573 offset += sprintf(buf + offset, "%2.2x ",
1574 rulla->atm_addr[j] & 0xff);
1576 offset += sprintf(buf + offset,
1577 "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
1578 rulla->vcc ? rulla->vcc->vpi : 0,
1579 rulla->vcc ? rulla->vcc->vci : 0,
1580 rulla->recv_vcc ? rulla->recv_vcc->vpi : 0,
1581 rulla->recv_vcc ? rulla->recv_vcc->vci : 0,
1583 rulla->timestamp, rulla->no_tries);
1584 offset += sprintf(buf + offset,
1585 "Flags:%x, Packets_flooded:%x, Status: %s ",
1586 rulla->flags, rulla->packets_flooded,
1587 get_status_string(rulla->status));
1588 pr_info("%s\n", buf);
1593 #define dump_arp_table(priv) do { } while (0)
1597 * Destruction of arp-cache
1599 static void lec_arp_destroy(struct lec_priv *priv)
1601 unsigned long flags;
1602 struct hlist_node *node, *next;
1603 struct lec_arp_table *entry;
1606 cancel_delayed_work_sync(&priv->lec_arp_work);
1609 * Remove all entries
1612 spin_lock_irqsave(&priv->lec_arp_lock, flags);
1613 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
1614 hlist_for_each_entry_safe(entry, node, next,
1615 &priv->lec_arp_tables[i], next) {
1616 lec_arp_remove(priv, entry);
1619 INIT_HLIST_HEAD(&priv->lec_arp_tables[i]);
1622 hlist_for_each_entry_safe(entry, node, next,
1623 &priv->lec_arp_empty_ones, next) {
1624 del_timer_sync(&entry->timer);
1625 lec_arp_clear_vccs(entry);
1626 hlist_del(&entry->next);
1629 INIT_HLIST_HEAD(&priv->lec_arp_empty_ones);
1631 hlist_for_each_entry_safe(entry, node, next,
1632 &priv->lec_no_forward, next) {
1633 del_timer_sync(&entry->timer);
1634 lec_arp_clear_vccs(entry);
1635 hlist_del(&entry->next);
1638 INIT_HLIST_HEAD(&priv->lec_no_forward);
1640 hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) {
1641 /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
1642 lec_arp_clear_vccs(entry);
1643 hlist_del(&entry->next);
1646 INIT_HLIST_HEAD(&priv->mcast_fwds);
1647 priv->mcast_vcc = NULL;
1648 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
1652 * Find entry by mac_address
1654 static struct lec_arp_table *lec_arp_find(struct lec_priv *priv,
1655 const unsigned char *mac_addr)
1657 struct hlist_node *node;
1658 struct hlist_head *head;
1659 struct lec_arp_table *entry;
1661 pr_debug("%pM\n", mac_addr);
1663 head = &priv->lec_arp_tables[HASH(mac_addr[ETH_ALEN - 1])];
1664 hlist_for_each_entry(entry, node, head, next) {
1665 if (ether_addr_equal(mac_addr, entry->mac_addr))
1671 static struct lec_arp_table *make_entry(struct lec_priv *priv,
1672 const unsigned char *mac_addr)
1674 struct lec_arp_table *to_return;
1676 to_return = kzalloc(sizeof(struct lec_arp_table), GFP_ATOMIC);
1678 pr_info("LEC: Arp entry kmalloc failed\n");
1681 memcpy(to_return->mac_addr, mac_addr, ETH_ALEN);
1682 INIT_HLIST_NODE(&to_return->next);
1683 setup_timer(&to_return->timer, lec_arp_expire_arp,
1684 (unsigned long)to_return);
1685 to_return->last_used = jiffies;
1686 to_return->priv = priv;
1687 skb_queue_head_init(&to_return->tx_wait);
1688 atomic_set(&to_return->usage, 1);
1692 /* Arp sent timer expired */
1693 static void lec_arp_expire_arp(unsigned long data)
1695 struct lec_arp_table *entry;
1697 entry = (struct lec_arp_table *)data;
1700 if (entry->status == ESI_ARP_PENDING) {
1701 if (entry->no_tries <= entry->priv->max_retry_count) {
1702 if (entry->is_rdesc)
1703 send_to_lecd(entry->priv, l_rdesc_arp_xmt,
1704 entry->mac_addr, NULL, NULL);
1706 send_to_lecd(entry->priv, l_arp_xmt,
1707 entry->mac_addr, NULL, NULL);
1710 mod_timer(&entry->timer, jiffies + (1 * HZ));
1714 /* Unknown/unused vcc expire, remove associated entry */
1715 static void lec_arp_expire_vcc(unsigned long data)
1717 unsigned long flags;
1718 struct lec_arp_table *to_remove = (struct lec_arp_table *)data;
1719 struct lec_priv *priv = (struct lec_priv *)to_remove->priv;
1721 del_timer(&to_remove->timer);
1723 pr_debug("%p %p: vpi:%d vci:%d\n",
1725 to_remove->vcc ? to_remove->recv_vcc->vpi : 0,
1726 to_remove->vcc ? to_remove->recv_vcc->vci : 0);
1728 spin_lock_irqsave(&priv->lec_arp_lock, flags);
1729 hlist_del(&to_remove->next);
1730 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
1732 lec_arp_clear_vccs(to_remove);
1733 lec_arp_put(to_remove);
1736 static bool __lec_arp_check_expire(struct lec_arp_table *entry,
1738 struct lec_priv *priv)
1740 unsigned long time_to_check;
1742 if ((entry->flags) & LEC_REMOTE_FLAG && priv->topology_change)
1743 time_to_check = priv->forward_delay_time;
1745 time_to_check = priv->aging_time;
1747 pr_debug("About to expire: %lx - %lx > %lx\n",
1748 now, entry->last_used, time_to_check);
1749 if (time_after(now, entry->last_used + time_to_check) &&
1750 !(entry->flags & LEC_PERMANENT_FLAG) &&
1751 !(entry->mac_addr[0] & 0x01)) { /* LANE2: 7.1.20 */
1753 pr_debug("Entry timed out\n");
1754 lec_arp_remove(priv, entry);
1757 /* Something else */
1758 if ((entry->status == ESI_VC_PENDING ||
1759 entry->status == ESI_ARP_PENDING) &&
1760 time_after_eq(now, entry->timestamp +
1761 priv->max_unknown_frame_time)) {
1762 entry->timestamp = jiffies;
1763 entry->packets_flooded = 0;
1764 if (entry->status == ESI_VC_PENDING)
1765 send_to_lecd(priv, l_svc_setup,
1770 if (entry->status == ESI_FLUSH_PENDING &&
1771 time_after_eq(now, entry->timestamp +
1772 priv->path_switching_delay)) {
1773 lec_arp_hold(entry);
1783 * 2. For each entry, delete entries that have aged past the age limit.
1784 * 3. For each entry, depending on the status of the entry, perform
1785 * the following maintenance.
1786 * a. If status is ESI_VC_PENDING or ESI_ARP_PENDING then if the
1787 * tick_count is above the max_unknown_frame_time, clear
1788 * the tick_count to zero and clear the packets_flooded counter
1789 * to zero. This supports the packet rate limit per address
1790 * while flooding unknowns.
1791 * b. If the status is ESI_FLUSH_PENDING and the tick_count is greater
1792 * than or equal to the path_switching_delay, change the status
1793 * to ESI_FORWARD_DIRECT. This causes the flush period to end
1794 * regardless of the progress of the flush protocol.
1796 static void lec_arp_check_expire(struct work_struct *work)
1798 unsigned long flags;
1799 struct lec_priv *priv =
1800 container_of(work, struct lec_priv, lec_arp_work.work);
1801 struct hlist_node *node, *next;
1802 struct lec_arp_table *entry;
1806 pr_debug("%p\n", priv);
1809 spin_lock_irqsave(&priv->lec_arp_lock, flags);
1810 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
1811 hlist_for_each_entry_safe(entry, node, next,
1812 &priv->lec_arp_tables[i], next) {
1813 if (__lec_arp_check_expire(entry, now, priv)) {
1814 struct sk_buff *skb;
1815 struct atm_vcc *vcc = entry->vcc;
1817 spin_unlock_irqrestore(&priv->lec_arp_lock,
1819 while ((skb = skb_dequeue(&entry->tx_wait)))
1821 entry->last_used = jiffies;
1822 entry->status = ESI_FORWARD_DIRECT;
1829 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
1831 schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL);
1835 * Try to find vcc where mac_address is attached.
1838 static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv,
1839 const unsigned char *mac_to_find,
1841 struct lec_arp_table **ret_entry)
1843 unsigned long flags;
1844 struct lec_arp_table *entry;
1845 struct atm_vcc *found;
1847 if (mac_to_find[0] & 0x01) {
1848 switch (priv->lane_version) {
1850 return priv->mcast_vcc;
1851 case 2: /* LANE2 wants arp for multicast addresses */
1852 if (ether_addr_equal(mac_to_find, bus_mac))
1853 return priv->mcast_vcc;
1860 spin_lock_irqsave(&priv->lec_arp_lock, flags);
1861 entry = lec_arp_find(priv, mac_to_find);
1864 if (entry->status == ESI_FORWARD_DIRECT) {
1866 entry->last_used = jiffies;
1867 lec_arp_hold(entry);
1873 * If the LE_ARP cache entry is still pending, reset count to 0
1874 * so another LE_ARP request can be made for this frame.
1876 if (entry->status == ESI_ARP_PENDING)
1877 entry->no_tries = 0;
1879 * Data direct VC not yet set up, check to see if the unknown
1880 * frame count is greater than the limit. If the limit has
1881 * not been reached, allow the caller to send packet to
1884 if (entry->status != ESI_FLUSH_PENDING &&
1885 entry->packets_flooded <
1886 priv->maximum_unknown_frame_count) {
1887 entry->packets_flooded++;
1888 pr_debug("Flooding..\n");
1889 found = priv->mcast_vcc;
1893 * We got here because entry->status == ESI_FLUSH_PENDING
1894 * or BUS flood limit was reached for an entry which is
1895 * in ESI_ARP_PENDING or ESI_VC_PENDING state.
1897 lec_arp_hold(entry);
1899 pr_debug("entry->status %d entry->vcc %p\n", entry->status,
1903 /* No matching entry was found */
1904 entry = make_entry(priv, mac_to_find);
1905 pr_debug("Making entry\n");
1907 found = priv->mcast_vcc;
1910 lec_arp_add(priv, entry);
1911 /* We want arp-request(s) to be sent */
1912 entry->packets_flooded = 1;
1913 entry->status = ESI_ARP_PENDING;
1914 entry->no_tries = 1;
1915 entry->last_used = entry->timestamp = jiffies;
1916 entry->is_rdesc = is_rdesc;
1917 if (entry->is_rdesc)
1918 send_to_lecd(priv, l_rdesc_arp_xmt, mac_to_find, NULL,
1921 send_to_lecd(priv, l_arp_xmt, mac_to_find, NULL, NULL);
1922 entry->timer.expires = jiffies + (1 * HZ);
1923 entry->timer.function = lec_arp_expire_arp;
1924 add_timer(&entry->timer);
1925 found = priv->mcast_vcc;
1929 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
1934 lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr,
1935 unsigned long permanent)
1937 unsigned long flags;
1938 struct hlist_node *node, *next;
1939 struct lec_arp_table *entry;
1943 spin_lock_irqsave(&priv->lec_arp_lock, flags);
1944 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
1945 hlist_for_each_entry_safe(entry, node, next,
1946 &priv->lec_arp_tables[i], next) {
1947 if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN) &&
1949 !(entry->flags & LEC_PERMANENT_FLAG))) {
1950 lec_arp_remove(priv, entry);
1953 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
1957 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
1962 * Notifies: Response to arp_request (atm_addr != NULL)
1965 lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr,
1966 const unsigned char *atm_addr, unsigned long remoteflag,
1967 unsigned int targetless_le_arp)
1969 unsigned long flags;
1970 struct hlist_node *node, *next;
1971 struct lec_arp_table *entry, *tmp;
1974 pr_debug("%smac:%pM\n",
1975 (targetless_le_arp) ? "targetless " : "", mac_addr);
1977 spin_lock_irqsave(&priv->lec_arp_lock, flags);
1978 entry = lec_arp_find(priv, mac_addr);
1979 if (entry == NULL && targetless_le_arp)
1981 * LANE2: ignore targetless LE_ARPs for which
1982 * we have no entry in the cache. 7.1.30
1984 if (!hlist_empty(&priv->lec_arp_empty_ones)) {
1985 hlist_for_each_entry_safe(entry, node, next,
1986 &priv->lec_arp_empty_ones, next) {
1987 if (memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN) == 0) {
1988 hlist_del(&entry->next);
1989 del_timer(&entry->timer);
1990 tmp = lec_arp_find(priv, mac_addr);
1992 del_timer(&tmp->timer);
1993 tmp->status = ESI_FORWARD_DIRECT;
1994 memcpy(tmp->atm_addr, atm_addr, ATM_ESA_LEN);
1995 tmp->vcc = entry->vcc;
1996 tmp->old_push = entry->old_push;
1997 tmp->last_used = jiffies;
1998 del_timer(&entry->timer);
2002 entry->status = ESI_FORWARD_DIRECT;
2003 memcpy(entry->mac_addr, mac_addr, ETH_ALEN);
2004 entry->last_used = jiffies;
2005 lec_arp_add(priv, entry);
2008 entry->flags |= LEC_REMOTE_FLAG;
2010 entry->flags &= ~LEC_REMOTE_FLAG;
2011 pr_debug("After update\n");
2012 dump_arp_table(priv);
2018 entry = lec_arp_find(priv, mac_addr);
2020 entry = make_entry(priv, mac_addr);
2023 entry->status = ESI_UNKNOWN;
2024 lec_arp_add(priv, entry);
2025 /* Temporary, changes before end of function */
2027 memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN);
2028 del_timer(&entry->timer);
2029 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
2030 hlist_for_each_entry(tmp, node,
2031 &priv->lec_arp_tables[i], next) {
2033 !memcmp(tmp->atm_addr, atm_addr, ATM_ESA_LEN)) {
2034 /* Vcc to this host exists */
2035 if (tmp->status > ESI_VC_PENDING) {
2037 * ESI_FLUSH_PENDING,
2038 * ESI_FORWARD_DIRECT
2040 entry->vcc = tmp->vcc;
2041 entry->old_push = tmp->old_push;
2043 entry->status = tmp->status;
2049 entry->flags |= LEC_REMOTE_FLAG;
2051 entry->flags &= ~LEC_REMOTE_FLAG;
2052 if (entry->status == ESI_ARP_PENDING || entry->status == ESI_UNKNOWN) {
2053 entry->status = ESI_VC_PENDING;
2054 send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL);
2056 pr_debug("After update2\n");
2057 dump_arp_table(priv);
2059 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
2063 * Notifies: Vcc setup ready
2066 lec_vcc_added(struct lec_priv *priv, const struct atmlec_ioc *ioc_data,
2067 struct atm_vcc *vcc,
2068 void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb))
2070 unsigned long flags;
2071 struct hlist_node *node;
2072 struct lec_arp_table *entry;
2073 int i, found_entry = 0;
2075 spin_lock_irqsave(&priv->lec_arp_lock, flags);
2076 /* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */
2077 if (ioc_data->receive == 2) {
2078 pr_debug("LEC_ARP: Attaching mcast forward\n");
2080 entry = lec_arp_find(priv, bus_mac);
2082 pr_info("LEC_ARP: Multicast entry not found!\n");
2085 memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
2086 entry->recv_vcc = vcc;
2087 entry->old_recv_push = old_push;
2089 entry = make_entry(priv, bus_mac);
2092 del_timer(&entry->timer);
2093 memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
2094 entry->recv_vcc = vcc;
2095 entry->old_recv_push = old_push;
2096 hlist_add_head(&entry->next, &priv->mcast_fwds);
2098 } else if (ioc_data->receive == 1) {
2100 * Vcc which we don't want to make default vcc,
2103 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",
2104 ioc_data->atm_addr[0], ioc_data->atm_addr[1],
2105 ioc_data->atm_addr[2], ioc_data->atm_addr[3],
2106 ioc_data->atm_addr[4], ioc_data->atm_addr[5],
2107 ioc_data->atm_addr[6], ioc_data->atm_addr[7],
2108 ioc_data->atm_addr[8], ioc_data->atm_addr[9],
2109 ioc_data->atm_addr[10], ioc_data->atm_addr[11],
2110 ioc_data->atm_addr[12], ioc_data->atm_addr[13],
2111 ioc_data->atm_addr[14], ioc_data->atm_addr[15],
2112 ioc_data->atm_addr[16], ioc_data->atm_addr[17],
2113 ioc_data->atm_addr[18], ioc_data->atm_addr[19]);
2114 entry = make_entry(priv, bus_mac);
2117 memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
2118 memset(entry->mac_addr, 0, ETH_ALEN);
2119 entry->recv_vcc = vcc;
2120 entry->old_recv_push = old_push;
2121 entry->status = ESI_UNKNOWN;
2122 entry->timer.expires = jiffies + priv->vcc_timeout_period;
2123 entry->timer.function = lec_arp_expire_vcc;
2124 hlist_add_head(&entry->next, &priv->lec_no_forward);
2125 add_timer(&entry->timer);
2126 dump_arp_table(priv);
2129 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",
2130 ioc_data->atm_addr[0], ioc_data->atm_addr[1],
2131 ioc_data->atm_addr[2], ioc_data->atm_addr[3],
2132 ioc_data->atm_addr[4], ioc_data->atm_addr[5],
2133 ioc_data->atm_addr[6], ioc_data->atm_addr[7],
2134 ioc_data->atm_addr[8], ioc_data->atm_addr[9],
2135 ioc_data->atm_addr[10], ioc_data->atm_addr[11],
2136 ioc_data->atm_addr[12], ioc_data->atm_addr[13],
2137 ioc_data->atm_addr[14], ioc_data->atm_addr[15],
2138 ioc_data->atm_addr[16], ioc_data->atm_addr[17],
2139 ioc_data->atm_addr[18], ioc_data->atm_addr[19]);
2140 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
2141 hlist_for_each_entry(entry, node,
2142 &priv->lec_arp_tables[i], next) {
2144 (ioc_data->atm_addr, entry->atm_addr,
2145 ATM_ESA_LEN) == 0) {
2146 pr_debug("LEC_ARP: Attaching data direct\n");
2147 pr_debug("Currently -> Vcc: %d, Rvcc:%d\n",
2148 entry->vcc ? entry->vcc->vci : 0,
2149 entry->recv_vcc ? entry->recv_vcc->
2152 del_timer(&entry->timer);
2154 entry->old_push = old_push;
2155 if (entry->status == ESI_VC_PENDING) {
2156 if (priv->maximum_unknown_frame_count
2161 entry->timestamp = jiffies;
2165 send_to_lecd(priv, l_flush_xmt,
2173 * They were forming a connection
2174 * to us, and we to them. Our
2175 * ATM address is numerically lower
2176 * than theirs, so we make connection
2177 * we formed into default VCC (8.1.11).
2178 * Connection they made gets torn
2179 * down. This might confuse some
2180 * clients. Can be changed if
2181 * someone reports trouble...
2189 pr_debug("After vcc was added\n");
2190 dump_arp_table(priv);
2194 * Not found, snatch address from first data packet that arrives
2197 entry = make_entry(priv, bus_mac);
2201 entry->old_push = old_push;
2202 memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
2203 memset(entry->mac_addr, 0, ETH_ALEN);
2204 entry->status = ESI_UNKNOWN;
2205 hlist_add_head(&entry->next, &priv->lec_arp_empty_ones);
2206 entry->timer.expires = jiffies + priv->vcc_timeout_period;
2207 entry->timer.function = lec_arp_expire_vcc;
2208 add_timer(&entry->timer);
2209 pr_debug("After vcc was added\n");
2210 dump_arp_table(priv);
2212 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
2215 static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id)
2217 unsigned long flags;
2218 struct hlist_node *node;
2219 struct lec_arp_table *entry;
2222 pr_debug("%lx\n", tran_id);
2224 spin_lock_irqsave(&priv->lec_arp_lock, flags);
2225 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
2226 hlist_for_each_entry(entry, node,
2227 &priv->lec_arp_tables[i], next) {
2228 if (entry->flush_tran_id == tran_id &&
2229 entry->status == ESI_FLUSH_PENDING) {
2230 struct sk_buff *skb;
2231 struct atm_vcc *vcc = entry->vcc;
2233 lec_arp_hold(entry);
2234 spin_unlock_irqrestore(&priv->lec_arp_lock,
2236 while ((skb = skb_dequeue(&entry->tx_wait)))
2238 entry->last_used = jiffies;
2239 entry->status = ESI_FORWARD_DIRECT;
2241 pr_debug("LEC_ARP: Flushed\n");
2246 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
2247 dump_arp_table(priv);
2251 lec_set_flush_tran_id(struct lec_priv *priv,
2252 const unsigned char *atm_addr, unsigned long tran_id)
2254 unsigned long flags;
2255 struct hlist_node *node;
2256 struct lec_arp_table *entry;
2259 spin_lock_irqsave(&priv->lec_arp_lock, flags);
2260 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++)
2261 hlist_for_each_entry(entry, node,
2262 &priv->lec_arp_tables[i], next) {
2263 if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) {
2264 entry->flush_tran_id = tran_id;
2265 pr_debug("Set flush transaction id to %lx for %p\n",
2269 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
2272 static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc)
2274 unsigned long flags;
2275 unsigned char mac_addr[] = {
2276 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2278 struct lec_arp_table *to_add;
2279 struct lec_vcc_priv *vpriv;
2282 vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL);
2286 vpriv->old_pop = vcc->pop;
2287 vcc->user_back = vpriv;
2289 spin_lock_irqsave(&priv->lec_arp_lock, flags);
2290 to_add = make_entry(priv, mac_addr);
2292 vcc->pop = vpriv->old_pop;
2297 memcpy(to_add->atm_addr, vcc->remote.sas_addr.prv, ATM_ESA_LEN);
2298 to_add->status = ESI_FORWARD_DIRECT;
2299 to_add->flags |= LEC_PERMANENT_FLAG;
2301 to_add->old_push = vcc->push;
2302 vcc->push = lec_push;
2303 priv->mcast_vcc = vcc;
2304 lec_arp_add(priv, to_add);
2306 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
2310 static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc)
2312 unsigned long flags;
2313 struct hlist_node *node, *next;
2314 struct lec_arp_table *entry;
2317 pr_debug("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n", vcc->vpi, vcc->vci);
2318 dump_arp_table(priv);
2320 spin_lock_irqsave(&priv->lec_arp_lock, flags);
2322 for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
2323 hlist_for_each_entry_safe(entry, node, next,
2324 &priv->lec_arp_tables[i], next) {
2325 if (vcc == entry->vcc) {
2326 lec_arp_remove(priv, entry);
2328 if (priv->mcast_vcc == vcc)
2329 priv->mcast_vcc = NULL;
2334 hlist_for_each_entry_safe(entry, node, next,
2335 &priv->lec_arp_empty_ones, next) {
2336 if (entry->vcc == vcc) {
2337 lec_arp_clear_vccs(entry);
2338 del_timer(&entry->timer);
2339 hlist_del(&entry->next);
2344 hlist_for_each_entry_safe(entry, node, next,
2345 &priv->lec_no_forward, next) {
2346 if (entry->recv_vcc == vcc) {
2347 lec_arp_clear_vccs(entry);
2348 del_timer(&entry->timer);
2349 hlist_del(&entry->next);
2354 hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) {
2355 if (entry->recv_vcc == vcc) {
2356 lec_arp_clear_vccs(entry);
2357 /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
2358 hlist_del(&entry->next);
2363 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
2364 dump_arp_table(priv);
2368 lec_arp_check_empties(struct lec_priv *priv,
2369 struct atm_vcc *vcc, struct sk_buff *skb)
2371 unsigned long flags;
2372 struct hlist_node *node, *next;
2373 struct lec_arp_table *entry, *tmp;
2374 struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data;
2377 struct lecdatahdr_8025 *tr_hdr = (struct lecdatahdr_8025 *)skb->data;
2380 src = tr_hdr->h_source;
2383 src = hdr->h_source;
2385 spin_lock_irqsave(&priv->lec_arp_lock, flags);
2386 hlist_for_each_entry_safe(entry, node, next,
2387 &priv->lec_arp_empty_ones, next) {
2388 if (vcc == entry->vcc) {
2389 del_timer(&entry->timer);
2390 memcpy(entry->mac_addr, src, ETH_ALEN);
2391 entry->status = ESI_FORWARD_DIRECT;
2392 entry->last_used = jiffies;
2393 /* We might have got an entry */
2394 tmp = lec_arp_find(priv, src);
2396 lec_arp_remove(priv, tmp);
2399 hlist_del(&entry->next);
2400 lec_arp_add(priv, entry);
2404 pr_debug("LEC_ARP: Arp_check_empties: entry not found!\n");
2406 spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
2409 MODULE_LICENSE("GPL");