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>
30 #include <linux/atmdev.h>
31 #include <linux/atmlec.h>
33 /* Proxy LEC knows about bridging */
34 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
35 #include "../bridge/br_private.h"
37 static unsigned char bridge_ula_lec
[] = { 0x01, 0x80, 0xc2, 0x00, 0x00 };
41 #include <linux/module.h>
42 #include <linux/init.h>
46 #include "resources.h"
48 #define DUMP_PACKETS 0 /*
54 #define LEC_UNRES_QUE_LEN 8 /*
55 * number of tx packets to queue for a
56 * single destination while waiting for SVC
59 static int lec_open(struct net_device
*dev
);
60 static netdev_tx_t
lec_start_xmit(struct sk_buff
*skb
,
61 struct net_device
*dev
);
62 static int lec_close(struct net_device
*dev
);
63 static struct lec_arp_table
*lec_arp_find(struct lec_priv
*priv
,
64 const unsigned char *mac_addr
);
65 static int lec_arp_remove(struct lec_priv
*priv
,
66 struct lec_arp_table
*to_remove
);
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
,
71 u8
**tlvs
, u32
*sizeoftlvs
);
72 static int lane2_associate_req(struct net_device
*dev
, const u8
*lan_dst
,
73 const u8
*tlvs
, u32 sizeoftlvs
);
75 static int lec_addr_delete(struct lec_priv
*priv
, const unsigned char *atm_addr
,
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
);
81 static struct atm_vcc
*lec_arp_resolve(struct lec_priv
*priv
,
82 const unsigned char *mac_to_find
,
84 struct lec_arp_table
**ret_entry
);
85 static void lec_arp_update(struct lec_priv
*priv
, const unsigned char *mac_addr
,
86 const unsigned char *atm_addr
,
87 unsigned long remoteflag
,
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
,
92 const unsigned char *atm_addr
,
93 unsigned long tran_id
);
94 static void lec_vcc_added(struct lec_priv
*priv
,
95 const struct atmlec_ioc
*ioc_data
,
97 void (*old_push
)(struct atm_vcc
*vcc
,
98 struct sk_buff
*skb
));
99 static void lec_vcc_close(struct lec_priv
*priv
, struct atm_vcc
*vcc
);
101 /* must be done under lec_arp_lock */
102 static inline void lec_arp_hold(struct lec_arp_table
*entry
)
104 atomic_inc(&entry
->usage
);
107 static inline void lec_arp_put(struct lec_arp_table
*entry
)
109 if (atomic_dec_and_test(&entry
->usage
))
113 static struct lane2_ops lane2_ops
= {
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 */
119 static unsigned char bus_mac
[ETH_ALEN
] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
121 /* Device structures */
122 static struct net_device
*dev_lec
[MAX_LEC_ITF
];
124 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
125 static void lec_handle_bridge(struct sk_buff
*skb
, struct net_device
*dev
)
128 struct lec_priv
*priv
;
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
135 buff
= skb
->data
+ skb
->dev
->hard_header_len
;
136 if (*buff
++ == 0x42 && *buff
++ == 0x42 && *buff
++ == 0x03) {
138 struct sk_buff
*skb2
;
139 struct atmlec_msg
*mesg
;
141 skb2
= alloc_skb(sizeof(struct atmlec_msg
), GFP_ATOMIC
);
144 skb2
->len
= sizeof(struct atmlec_msg
);
145 mesg
= (struct atmlec_msg
*)skb2
->data
;
146 mesg
->type
= l_topology_change
;
148 mesg
->content
.normal
.flag
= *buff
& 0x01;
149 /* 0x01 is topology change */
151 priv
= netdev_priv(dev
);
152 atm_force_charge(priv
->lecd
, skb2
->truesize
);
153 sk
= sk_atm(priv
->lecd
);
154 skb_queue_tail(&sk
->sk_receive_queue
, skb2
);
155 sk
->sk_data_ready(sk
, skb2
->len
);
158 #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
161 * Open/initialize the netdevice. This is called (in the current kernel)
162 * sometime after booting when the 'ifconfig' program is run.
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.
169 static int lec_open(struct net_device
*dev
)
171 netif_start_queue(dev
);
177 lec_send(struct atm_vcc
*vcc
, struct sk_buff
*skb
)
179 struct net_device
*dev
= skb
->dev
;
181 ATM_SKB(skb
)->vcc
= vcc
;
182 ATM_SKB(skb
)->atm_options
= vcc
->atm_options
;
184 atomic_add(skb
->truesize
, &sk_atm(vcc
)->sk_wmem_alloc
);
185 if (vcc
->send(vcc
, skb
) < 0) {
186 dev
->stats
.tx_dropped
++;
190 dev
->stats
.tx_packets
++;
191 dev
->stats
.tx_bytes
+= skb
->len
;
194 static void lec_tx_timeout(struct net_device
*dev
)
196 pr_info("%s\n", dev
->name
);
197 dev
->trans_start
= jiffies
;
198 netif_wake_queue(dev
);
201 static netdev_tx_t
lec_start_xmit(struct sk_buff
*skb
,
202 struct net_device
*dev
)
204 struct sk_buff
*skb2
;
205 struct lec_priv
*priv
= netdev_priv(dev
);
206 struct lecdatahdr_8023
*lec_h
;
208 struct lec_arp_table
*entry
;
213 pr_debug("called\n");
215 pr_info("%s:No lecd attached\n", dev
->name
);
216 dev
->stats
.tx_errors
++;
217 netif_stop_queue(dev
);
222 pr_debug("skbuff head:%lx data:%lx tail:%lx end:%lx\n",
223 (long)skb
->head
, (long)skb
->data
, (long)skb_tail_pointer(skb
),
224 (long)skb_end_pointer(skb
));
225 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
226 if (memcmp(skb
->data
, bridge_ula_lec
, sizeof(bridge_ula_lec
)) == 0)
227 lec_handle_bridge(skb
, dev
);
230 /* Make sure we have room for lec_id */
231 if (skb_headroom(skb
) < 2) {
232 pr_debug("reallocating skb\n");
233 skb2
= skb_realloc_headroom(skb
, LEC_HEADER_LEN
);
241 /* Put le header to place */
242 lec_h
= (struct lecdatahdr_8023
*)skb
->data
;
243 lec_h
->le_header
= htons(priv
->lecid
);
245 #if DUMP_PACKETS >= 2
246 #define MAX_DUMP_SKB 99
247 #elif DUMP_PACKETS >= 1
248 #define MAX_DUMP_SKB 30
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);
255 #endif /* DUMP_PACKETS >= 1 */
257 /* Minimum ethernet-frame size */
258 min_frame_size
= LEC_MINIMUM_8023_SIZE
;
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
,
266 dev
->stats
.tx_dropped
++;
271 skb_put(skb
, min_frame_size
- skb
->len
);
274 /* Send to right vcc */
278 vcc
= lec_arp_resolve(priv
, dst
, is_rdesc
, &entry
);
279 pr_debug("%s:vcc:%p vcc_flags:%lx, entry:%p\n",
280 dev
->name
, vcc
, vcc
? vcc
->flags
: 0, entry
);
281 if (!vcc
|| !test_bit(ATM_VF_READY
, &vcc
->flags
)) {
282 if (entry
&& (entry
->tx_wait
.qlen
< LEC_UNRES_QUE_LEN
)) {
283 pr_debug("%s:queuing packet, MAC address %pM\n",
284 dev
->name
, lec_h
->h_dest
);
285 skb_queue_tail(&entry
->tx_wait
, skb
);
287 pr_debug("%s:tx queue full or no arp entry, dropping, MAC address: %pM\n",
288 dev
->name
, lec_h
->h_dest
);
289 dev
->stats
.tx_dropped
++;
295 printk(KERN_DEBUG
"%s:sending to vpi:%d vci:%d\n",
296 dev
->name
, vcc
->vpi
, vcc
->vci
);
297 #endif /* DUMP_PACKETS > 0 */
299 while (entry
&& (skb2
= skb_dequeue(&entry
->tx_wait
))) {
300 pr_debug("emptying tx queue, MAC address %pM\n", lec_h
->h_dest
);
306 if (!atm_may_send(vcc
, 0)) {
307 struct lec_vcc_priv
*vpriv
= LEC_VCC_PRIV(vcc
);
310 netif_stop_queue(dev
);
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.
318 if (atm_may_send(vcc
, 0))
319 netif_wake_queue(dev
);
325 dev
->trans_start
= jiffies
;
329 /* The inverse routine to net_open(). */
330 static int lec_close(struct net_device
*dev
)
332 netif_stop_queue(dev
);
336 static int lec_atm_send(struct atm_vcc
*vcc
, struct sk_buff
*skb
)
339 struct net_device
*dev
= (struct net_device
*)vcc
->proto_data
;
340 struct lec_priv
*priv
= netdev_priv(dev
);
341 struct atmlec_msg
*mesg
;
342 struct lec_arp_table
*entry
;
344 char *tmp
; /* FIXME */
346 atomic_sub(skb
->truesize
, &sk_atm(vcc
)->sk_wmem_alloc
);
347 mesg
= (struct atmlec_msg
*)skb
->data
;
349 tmp
+= sizeof(struct atmlec_msg
);
350 pr_debug("%s: msg from zeppelin:%d\n", dev
->name
, mesg
->type
);
351 switch (mesg
->type
) {
353 for (i
= 0; i
< 6; i
++)
354 dev
->dev_addr
[i
] = mesg
->content
.normal
.mac_addr
[i
];
357 for (i
= 0; i
< 6; i
++)
358 dev
->dev_addr
[i
] = 0;
361 lec_addr_delete(priv
, mesg
->content
.normal
.atm_addr
,
362 mesg
->content
.normal
.flag
);
364 case l_topology_change
:
365 priv
->topology_change
= mesg
->content
.normal
.flag
;
367 case l_flush_complete
:
368 lec_flush_complete(priv
, mesg
->content
.normal
.flag
);
370 case l_narp_req
: /* LANE2: see 7.1.35 in the lane2 spec */
371 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
372 entry
= lec_arp_find(priv
, mesg
->content
.normal
.mac_addr
);
373 lec_arp_remove(priv
, entry
);
374 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
376 if (mesg
->content
.normal
.no_source_le_narp
)
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
);
384 pr_debug("in l_arp_update\n");
385 if (mesg
->sizeoftlvs
!= 0) { /* LANE2 3.1.5 */
386 pr_debug("LANE2 3.1.5, got tlvs, size %d\n",
388 lane2_associate_ind(dev
, mesg
->content
.normal
.mac_addr
,
389 tmp
, mesg
->sizeoftlvs
);
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
);
406 priv
->lane_version
= mesg
->content
.config
.lane_version
;
408 priv
->lane2_ops
= NULL
;
409 if (priv
->lane_version
> 1)
410 priv
->lane2_ops
= &lane2_ops
;
411 if (dev_set_mtu(dev
, mesg
->content
.config
.mtu
))
412 pr_info("%s: change_mtu to %d failed\n",
413 dev
->name
, mesg
->content
.config
.mtu
);
414 priv
->is_proxy
= mesg
->content
.config
.is_proxy
;
416 case l_flush_tran_id
:
417 lec_set_flush_tran_id(priv
, mesg
->content
.normal
.atm_addr
,
418 mesg
->content
.normal
.flag
);
422 (unsigned short)(0xffff & mesg
->content
.normal
.flag
);
424 case l_should_bridge
:
425 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
427 pr_debug("%s: bridge zeppelin asks about %pM\n",
428 dev
->name
, mesg
->content
.proxy
.mac_addr
);
430 if (br_fdb_test_addr_hook
== NULL
)
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
;
438 pr_debug("%s: entry found, responding to zeppelin\n",
440 skb2
= alloc_skb(sizeof(struct atmlec_msg
), GFP_ATOMIC
);
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
);
451 #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
454 pr_info("%s: Unknown message type %d\n", dev
->name
, mesg
->type
);
462 static void lec_atm_close(struct atm_vcc
*vcc
)
465 struct net_device
*dev
= (struct net_device
*)vcc
->proto_data
;
466 struct lec_priv
*priv
= netdev_priv(dev
);
469 /* Do something needful? */
471 netif_stop_queue(dev
);
472 lec_arp_destroy(priv
);
474 if (skb_peek(&sk_atm(vcc
)->sk_receive_queue
))
475 pr_info("%s closing with messages pending\n", dev
->name
);
476 while ((skb
= skb_dequeue(&sk_atm(vcc
)->sk_receive_queue
))) {
477 atm_return(vcc
, skb
->truesize
);
481 pr_info("%s: Shut down!\n", dev
->name
);
482 module_put(THIS_MODULE
);
485 static struct atmdev_ops lecdev_ops
= {
486 .close
= lec_atm_close
,
490 static struct atm_dev lecatm_dev
= {
493 .number
= 999, /* dummy device number */
494 .lock
= __SPIN_LOCK_UNLOCKED(lecatm_dev
.lock
)
498 * LANE2: new argument struct sk_buff *data contains
499 * the LE_ARP based TLVs introduced in the LANE2 spec
502 send_to_lecd(struct lec_priv
*priv
, atmlec_msg_type type
,
503 const unsigned char *mac_addr
, const unsigned char *atm_addr
,
504 struct sk_buff
*data
)
508 struct atmlec_msg
*mesg
;
510 if (!priv
|| !priv
->lecd
)
512 skb
= alloc_skb(sizeof(struct atmlec_msg
), GFP_ATOMIC
);
515 skb
->len
= sizeof(struct atmlec_msg
);
516 mesg
= (struct atmlec_msg
*)skb
->data
;
517 memset(mesg
, 0, sizeof(struct atmlec_msg
));
520 mesg
->sizeoftlvs
= data
->len
;
522 memcpy(&mesg
->content
.normal
.mac_addr
, mac_addr
, ETH_ALEN
);
524 mesg
->content
.normal
.targetless_le_arp
= 1;
526 memcpy(&mesg
->content
.normal
.atm_addr
, atm_addr
, ATM_ESA_LEN
);
528 atm_force_charge(priv
->lecd
, skb
->truesize
);
529 sk
= sk_atm(priv
->lecd
);
530 skb_queue_tail(&sk
->sk_receive_queue
, skb
);
531 sk
->sk_data_ready(sk
, skb
->len
);
534 pr_debug("about to send %d bytes of data\n", data
->len
);
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
);
543 /* shamelessly stolen from drivers/net/net_init.c */
544 static int lec_change_mtu(struct net_device
*dev
, int new_mtu
)
546 if ((new_mtu
< 68) || (new_mtu
> 18190))
552 static void lec_set_multicast_list(struct net_device
*dev
)
555 * by default, all multicast frames arrive over the bus.
556 * eventually support selective multicast service
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
,
566 .ndo_set_rx_mode
= lec_set_multicast_list
,
569 static const unsigned char lec_ctrl_magic
[] = {
576 #define LEC_DATA_DIRECT_8023 2
577 #define LEC_DATA_DIRECT_8025 3
579 static int lec_is_data_direct(struct atm_vcc
*vcc
)
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
));
585 static void lec_push(struct atm_vcc
*vcc
, struct sk_buff
*skb
)
588 struct net_device
*dev
= (struct net_device
*)vcc
->proto_data
;
589 struct lec_priv
*priv
= netdev_priv(dev
);
592 printk(KERN_DEBUG
"%s: vcc vpi:%d vci:%d\n",
593 dev
->name
, vcc
->vpi
, vcc
->vci
);
596 pr_debug("%s: null skb\n", dev
->name
);
597 lec_vcc_close(priv
, vcc
);
600 #if DUMP_PACKETS >= 2
601 #define MAX_SKB_DUMP 99
602 #elif DUMP_PACKETS >= 1
603 #define MAX_SKB_DUMP 30
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);
610 #endif /* DUMP_PACKETS > 0 */
611 if (memcmp(skb
->data
, lec_ctrl_magic
, 4) == 0) {
612 /* Control frame, to daemon */
613 struct sock
*sk
= sk_atm(vcc
);
615 pr_debug("%s: To daemon\n", dev
->name
);
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 */
619 struct lec_arp_table
*entry
;
620 unsigned char *src
, *dst
;
622 atm_return(vcc
, skb
->truesize
);
623 if (*(__be16
*) skb
->data
== htons(priv
->lecid
) ||
624 !priv
->lecd
|| !(dev
->flags
& IFF_UP
)) {
626 * Probably looping back, or if lecd is missing,
629 pr_debug("Ignoring frame...\n");
633 dst
= ((struct lecdatahdr_8023
*)skb
->data
)->h_dest
;
636 * If this is a Data Direct VCC, and the VCC does not match
637 * the LE_ARP cache entry, delete the LE_ARP cache entry.
639 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
640 if (lec_is_data_direct(vcc
)) {
641 src
= ((struct lecdatahdr_8023
*)skb
->data
)->h_source
;
642 entry
= lec_arp_find(priv
, src
);
643 if (entry
&& entry
->vcc
!= vcc
) {
644 lec_arp_remove(priv
, entry
);
648 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
650 if (!(dst
[0] & 0x01) && /* Never filter Multi/Broadcast */
651 !priv
->is_proxy
&& /* Proxy wants all the packets */
652 memcmp(dst
, dev
->dev_addr
, dev
->addr_len
)) {
656 if (!hlist_empty(&priv
->lec_arp_empty_ones
))
657 lec_arp_check_empties(priv
, vcc
, skb
);
658 skb_pull(skb
, 2); /* skip lec_id */
659 skb
->protocol
= eth_type_trans(skb
, dev
);
660 dev
->stats
.rx_packets
++;
661 dev
->stats
.rx_bytes
+= skb
->len
;
662 memset(ATM_SKB(skb
), 0, sizeof(struct atm_skb_data
));
667 static void lec_pop(struct atm_vcc
*vcc
, struct sk_buff
*skb
)
669 struct lec_vcc_priv
*vpriv
= LEC_VCC_PRIV(vcc
);
670 struct net_device
*dev
= skb
->dev
;
673 pr_info("vpriv = NULL!?!?!?\n");
677 vpriv
->old_pop(vcc
, skb
);
679 if (vpriv
->xoff
&& atm_may_send(vcc
, 0)) {
681 if (netif_running(dev
) && netif_queue_stopped(dev
))
682 netif_wake_queue(dev
);
686 static int lec_vcc_attach(struct atm_vcc
*vcc
, void __user
*arg
)
688 struct lec_vcc_priv
*vpriv
;
690 struct atmlec_ioc ioc_data
;
692 /* Lecd must be up in this case */
693 bytes_left
= copy_from_user(&ioc_data
, arg
, sizeof(struct atmlec_ioc
));
695 pr_info("copy from user failed for %d bytes\n", bytes_left
);
696 if (ioc_data
.dev_num
< 0 || ioc_data
.dev_num
>= MAX_LEC_ITF
||
697 !dev_lec
[ioc_data
.dev_num
])
699 vpriv
= kmalloc(sizeof(struct lec_vcc_priv
), GFP_KERNEL
);
703 vpriv
->old_pop
= vcc
->pop
;
704 vcc
->user_back
= vpriv
;
706 lec_vcc_added(netdev_priv(dev_lec
[ioc_data
.dev_num
]),
707 &ioc_data
, vcc
, vcc
->push
);
708 vcc
->proto_data
= dev_lec
[ioc_data
.dev_num
];
709 vcc
->push
= lec_push
;
713 static int lec_mcast_attach(struct atm_vcc
*vcc
, int arg
)
715 if (arg
< 0 || arg
>= MAX_LEC_ITF
|| !dev_lec
[arg
])
717 vcc
->proto_data
= dev_lec
[arg
];
718 return lec_mcast_make(netdev_priv(dev_lec
[arg
]), vcc
);
721 /* Initialize device. */
722 static int lecd_attach(struct atm_vcc
*vcc
, int arg
)
725 struct lec_priv
*priv
;
731 if (arg
>= MAX_LEC_ITF
)
736 size
= sizeof(struct lec_priv
);
737 dev_lec
[i
] = alloc_etherdev(size
);
740 dev_lec
[i
]->netdev_ops
= &lec_netdev_ops
;
741 snprintf(dev_lec
[i
]->name
, IFNAMSIZ
, "lec%d", i
);
742 if (register_netdev(dev_lec
[i
])) {
743 free_netdev(dev_lec
[i
]);
747 priv
= netdev_priv(dev_lec
[i
]);
749 priv
= netdev_priv(dev_lec
[i
]);
754 priv
->itfnum
= i
; /* LANE2 addition */
756 vcc
->dev
= &lecatm_dev
;
757 vcc_insert_socket(sk_atm(vcc
));
759 vcc
->proto_data
= dev_lec
[i
];
760 set_bit(ATM_VF_META
, &vcc
->flags
);
761 set_bit(ATM_VF_READY
, &vcc
->flags
);
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
);
775 if (dev_lec
[i
]->flags
& IFF_UP
)
776 netif_start_queue(dev_lec
[i
]);
777 __module_get(THIS_MODULE
);
781 #ifdef CONFIG_PROC_FS
782 static const char *lec_arp_get_status_string(unsigned char status
)
784 static const char *const lec_arp_status_string
[] = {
789 "ESI_FLUSH_PENDING ",
793 if (status
> ESI_FORWARD_DIRECT
)
794 status
= 3; /* ESI_UNDEFINED */
795 return lec_arp_status_string
[status
];
798 static void lec_info(struct seq_file
*seq
, struct lec_arp_table
*entry
)
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);
810 seq_printf(seq
, "%3d %3d ", entry
->vcc
->vpi
, entry
->vcc
->vci
);
812 seq_printf(seq
, " ");
813 if (entry
->recv_vcc
) {
814 seq_printf(seq
, " %3d %3d", entry
->recv_vcc
->vpi
,
815 entry
->recv_vcc
->vci
);
822 struct lec_priv
*locked
;
823 struct hlist_node
*node
;
824 struct net_device
*dev
;
830 static void *lec_tbl_walk(struct lec_state
*state
, struct hlist_head
*tbl
,
833 struct hlist_node
*e
= state
->node
;
834 struct lec_arp_table
*tmp
;
838 if (e
== SEQ_START_TOKEN
) {
843 hlist_for_each_entry_from(tmp
, e
, next
) {
849 return (*l
< 0) ? state
: NULL
;
852 static void *lec_arp_walk(struct lec_state
*state
, loff_t
*l
,
853 struct lec_priv
*priv
)
858 for (p
= state
->arp_table
; p
< LEC_ARP_TABLE_SIZE
; p
++) {
859 v
= lec_tbl_walk(state
, &priv
->lec_arp_tables
[p
], l
);
863 state
->arp_table
= p
;
867 static void *lec_misc_walk(struct lec_state
*state
, loff_t
*l
,
868 struct lec_priv
*priv
)
870 struct hlist_head
*lec_misc_tables
[] = {
871 &priv
->lec_arp_empty_ones
,
872 &priv
->lec_no_forward
,
878 for (q
= state
->misc_table
; q
< ARRAY_SIZE(lec_misc_tables
); q
++) {
879 v
= lec_tbl_walk(state
, lec_misc_tables
[q
], l
);
883 state
->misc_table
= q
;
887 static void *lec_priv_walk(struct lec_state
*state
, loff_t
*l
,
888 struct lec_priv
*priv
)
890 if (!state
->locked
) {
891 state
->locked
= priv
;
892 spin_lock_irqsave(&priv
->lec_arp_lock
, state
->flags
);
894 if (!lec_arp_walk(state
, l
, priv
) && !lec_misc_walk(state
, l
, priv
)) {
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;
900 return state
->locked
;
903 static void *lec_itf_walk(struct lec_state
*state
, loff_t
*l
)
905 struct net_device
*dev
;
908 dev
= state
->dev
? state
->dev
: dev_lec
[state
->itf
];
909 v
= (dev
&& netdev_priv(dev
)) ?
910 lec_priv_walk(state
, l
, netdev_priv(dev
)) : NULL
;
913 /* Partial state reset for the next time we get called */
920 static void *lec_get_idx(struct lec_state
*state
, loff_t l
)
924 for (; state
->itf
< MAX_LEC_ITF
; state
->itf
++) {
925 v
= lec_itf_walk(state
, &l
);
932 static void *lec_seq_start(struct seq_file
*seq
, loff_t
*pos
)
934 struct lec_state
*state
= seq
->private;
938 state
->locked
= NULL
;
939 state
->arp_table
= 0;
940 state
->misc_table
= 0;
941 state
->node
= SEQ_START_TOKEN
;
943 return *pos
? lec_get_idx(state
, *pos
) : SEQ_START_TOKEN
;
946 static void lec_seq_stop(struct seq_file
*seq
, void *v
)
948 struct lec_state
*state
= seq
->private;
951 spin_unlock_irqrestore(&state
->locked
->lec_arp_lock
,
957 static void *lec_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
959 struct lec_state
*state
= seq
->private;
961 v
= lec_get_idx(state
, 1);
962 *pos
+= !!PTR_ERR(v
);
966 static int lec_seq_show(struct seq_file
*seq
, void *v
)
968 static const char lec_banner
[] =
969 "Itf MAC ATM destination"
971 "VPI/VCI Recv VPI/VCI\n";
973 if (v
== SEQ_START_TOKEN
)
974 seq_puts(seq
, lec_banner
);
976 struct lec_state
*state
= seq
->private;
977 struct net_device
*dev
= state
->dev
;
978 struct lec_arp_table
*entry
= hlist_entry(state
->node
,
979 struct lec_arp_table
,
982 seq_printf(seq
, "%s ", dev
->name
);
983 lec_info(seq
, entry
);
988 static const struct seq_operations lec_seq_ops
= {
989 .start
= lec_seq_start
,
990 .next
= lec_seq_next
,
991 .stop
= lec_seq_stop
,
992 .show
= lec_seq_show
,
995 static int lec_seq_open(struct inode
*inode
, struct file
*file
)
997 return seq_open_private(file
, &lec_seq_ops
, sizeof(struct lec_state
));
1000 static const struct file_operations lec_seq_fops
= {
1001 .owner
= THIS_MODULE
,
1002 .open
= lec_seq_open
,
1004 .llseek
= seq_lseek
,
1005 .release
= seq_release_private
,
1009 static int lane_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
1011 struct atm_vcc
*vcc
= ATM_SD(sock
);
1018 if (!capable(CAP_NET_ADMIN
))
1022 return -ENOIOCTLCMD
;
1027 err
= lecd_attach(vcc
, (int)arg
);
1029 sock
->state
= SS_CONNECTED
;
1032 err
= lec_mcast_attach(vcc
, (int)arg
);
1035 err
= lec_vcc_attach(vcc
, (void __user
*)arg
);
1042 static struct atm_ioctl lane_ioctl_ops
= {
1043 .owner
= THIS_MODULE
,
1044 .ioctl
= lane_ioctl
,
1047 static int __init
lane_module_init(void)
1049 #ifdef CONFIG_PROC_FS
1050 struct proc_dir_entry
*p
;
1052 p
= proc_create("lec", S_IRUGO
, atm_proc_root
, &lec_seq_fops
);
1054 pr_err("Unable to initialize /proc/net/atm/lec\n");
1059 register_atm_ioctl(&lane_ioctl_ops
);
1060 pr_info("lec.c: initialized\n");
1064 static void __exit
lane_module_cleanup(void)
1068 remove_proc_entry("lec", atm_proc_root
);
1070 deregister_atm_ioctl(&lane_ioctl_ops
);
1072 for (i
= 0; i
< MAX_LEC_ITF
; i
++) {
1073 if (dev_lec
[i
] != NULL
) {
1074 unregister_netdev(dev_lec
[i
]);
1075 free_netdev(dev_lec
[i
]);
1081 module_init(lane_module_init
);
1082 module_exit(lane_module_cleanup
);
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
1089 * If dst_mac == NULL, targetless LE_ARP will be sent
1091 static int lane2_resolve(struct net_device
*dev
, const u8
*dst_mac
, int force
,
1092 u8
**tlvs
, u32
*sizeoftlvs
)
1094 unsigned long flags
;
1095 struct lec_priv
*priv
= netdev_priv(dev
);
1096 struct lec_arp_table
*table
;
1097 struct sk_buff
*skb
;
1101 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
1102 table
= lec_arp_find(priv
, dst_mac
);
1103 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
1107 *tlvs
= kmemdup(table
->tlvs
, table
->sizeoftlvs
, GFP_ATOMIC
);
1111 *sizeoftlvs
= table
->sizeoftlvs
;
1116 if (sizeoftlvs
== NULL
)
1117 retval
= send_to_lecd(priv
, l_arp_xmt
, dst_mac
, NULL
, NULL
);
1120 skb
= alloc_skb(*sizeoftlvs
, GFP_ATOMIC
);
1123 skb
->len
= *sizeoftlvs
;
1124 skb_copy_to_linear_data(skb
, *tlvs
, *sizeoftlvs
);
1125 retval
= send_to_lecd(priv
, l_arp_xmt
, dst_mac
, NULL
, skb
);
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)
1137 static int lane2_associate_req(struct net_device
*dev
, const u8
*lan_dst
,
1138 const u8
*tlvs
, u32 sizeoftlvs
)
1141 struct sk_buff
*skb
;
1142 struct lec_priv
*priv
= netdev_priv(dev
);
1144 if (!ether_addr_equal(lan_dst
, dev
->dev_addr
))
1145 return 0; /* not our mac address */
1147 kfree(priv
->tlvs
); /* NULL if there was no previous association */
1149 priv
->tlvs
= kmemdup(tlvs
, sizeoftlvs
, GFP_KERNEL
);
1150 if (priv
->tlvs
== NULL
)
1152 priv
->sizeoftlvs
= sizeoftlvs
;
1154 skb
= alloc_skb(sizeoftlvs
, GFP_ATOMIC
);
1157 skb
->len
= sizeoftlvs
;
1158 skb_copy_to_linear_data(skb
, tlvs
, sizeoftlvs
);
1159 retval
= send_to_lecd(priv
, l_associate_req
, NULL
, NULL
, skb
);
1161 pr_info("lec.c: lane2_associate_req() failed\n");
1163 * If the previous association has changed we must
1164 * somehow notify other LANE entities about the change
1170 * LANE2: 3.1.5, LE_ASSOCIATE.indication
1173 static void lane2_associate_ind(struct net_device
*dev
, const u8
*mac_addr
,
1174 const u8
*tlvs
, u32 sizeoftlvs
)
1179 struct lec_priv
*priv
= netdev_priv(dev
);
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
1186 struct lec_arp_table
*entry
= lec_arp_find(priv
, mac_addr
);
1189 return; /* should not happen */
1193 entry
->tlvs
= kmemdup(tlvs
, sizeoftlvs
, GFP_KERNEL
);
1194 if (entry
->tlvs
== NULL
)
1196 entry
->sizeoftlvs
= sizeoftlvs
;
1200 pr_info("dump of tlvs, sizeoftlvs=%d\n", sizeoftlvs
);
1201 while (i
< sizeoftlvs
)
1202 pr_cont("%02x ", tlvs
[i
++]);
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
,
1215 * Here starts what used to lec_arpc.c
1217 * lec_arpc.c was added here when making
1218 * lane client modular. October 1997
1221 #include <linux/types.h>
1222 #include <linux/timer.h>
1223 #include <linux/param.h>
1224 #include <linux/atomic.h>
1225 #include <linux/inetdevice.h>
1226 #include <net/route.h>
1229 #define pr_debug(format, args...)
1231 #define pr_debug printk
1234 #define DEBUG_ARP_TABLE 0
1236 #define LEC_ARP_REFRESH_INTERVAL (3*HZ)
1238 static void lec_arp_check_expire(struct work_struct
*work
);
1239 static void lec_arp_expire_arp(unsigned long data
);
1245 #define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE - 1))
1248 * Initialization of arp-cache
1250 static void lec_arp_init(struct lec_priv
*priv
)
1254 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++)
1255 INIT_HLIST_HEAD(&priv
->lec_arp_tables
[i
]);
1256 INIT_HLIST_HEAD(&priv
->lec_arp_empty_ones
);
1257 INIT_HLIST_HEAD(&priv
->lec_no_forward
);
1258 INIT_HLIST_HEAD(&priv
->mcast_fwds
);
1259 spin_lock_init(&priv
->lec_arp_lock
);
1260 INIT_DELAYED_WORK(&priv
->lec_arp_work
, lec_arp_check_expire
);
1261 schedule_delayed_work(&priv
->lec_arp_work
, LEC_ARP_REFRESH_INTERVAL
);
1264 static void lec_arp_clear_vccs(struct lec_arp_table
*entry
)
1267 struct atm_vcc
*vcc
= entry
->vcc
;
1268 struct lec_vcc_priv
*vpriv
= LEC_VCC_PRIV(vcc
);
1269 struct net_device
*dev
= (struct net_device
*)vcc
->proto_data
;
1271 vcc
->pop
= vpriv
->old_pop
;
1273 netif_wake_queue(dev
);
1275 vcc
->user_back
= NULL
;
1276 vcc
->push
= entry
->old_push
;
1277 vcc_release_async(vcc
, -EPIPE
);
1280 if (entry
->recv_vcc
) {
1281 entry
->recv_vcc
->push
= entry
->old_recv_push
;
1282 vcc_release_async(entry
->recv_vcc
, -EPIPE
);
1283 entry
->recv_vcc
= NULL
;
1288 * Insert entry to lec_arp_table
1289 * LANE2: Add to the end of the list to satisfy 8.1.13
1292 lec_arp_add(struct lec_priv
*priv
, struct lec_arp_table
*entry
)
1294 struct hlist_head
*tmp
;
1296 tmp
= &priv
->lec_arp_tables
[HASH(entry
->mac_addr
[ETH_ALEN
- 1])];
1297 hlist_add_head(&entry
->next
, tmp
);
1299 pr_debug("Added entry:%pM\n", entry
->mac_addr
);
1303 * Remove entry from lec_arp_table
1306 lec_arp_remove(struct lec_priv
*priv
, struct lec_arp_table
*to_remove
)
1308 struct hlist_node
*node
;
1309 struct lec_arp_table
*entry
;
1310 int i
, remove_vcc
= 1;
1315 hlist_del(&to_remove
->next
);
1316 del_timer(&to_remove
->timer
);
1319 * If this is the only MAC connected to this VCC,
1320 * also tear down the VCC
1322 if (to_remove
->status
>= ESI_FLUSH_PENDING
) {
1324 * ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT
1326 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++) {
1327 hlist_for_each_entry(entry
, node
,
1328 &priv
->lec_arp_tables
[i
], next
) {
1329 if (memcmp(to_remove
->atm_addr
,
1330 entry
->atm_addr
, ATM_ESA_LEN
) == 0) {
1337 lec_arp_clear_vccs(to_remove
);
1339 skb_queue_purge(&to_remove
->tx_wait
); /* FIXME: good place for this? */
1341 pr_debug("Removed entry:%pM\n", to_remove
->mac_addr
);
1346 static const char *get_status_string(unsigned char st
)
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";
1363 static void dump_arp_table(struct lec_priv
*priv
)
1365 struct hlist_node
*node
;
1366 struct lec_arp_table
*rulla
;
1370 pr_info("Dump %p:\n", priv
);
1371 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++) {
1372 hlist_for_each_entry(rulla
, node
,
1373 &priv
->lec_arp_tables
[i
], next
) {
1375 offset
+= sprintf(buf
, "%d: %p\n", i
, rulla
);
1376 offset
+= sprintf(buf
+ offset
, "Mac: %pM",
1378 offset
+= sprintf(buf
+ offset
, " Atm:");
1379 for (j
= 0; j
< ATM_ESA_LEN
; j
++) {
1380 offset
+= sprintf(buf
+ offset
,
1382 rulla
->atm_addr
[j
] & 0xff);
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
->
1390 rulla
->recv_vcc
? rulla
->recv_vcc
->
1391 vci
: 0, rulla
->last_used
,
1392 rulla
->timestamp
, rulla
->no_tries
);
1394 sprintf(buf
+ offset
,
1395 "Flags:%x, Packets_flooded:%x, Status: %s ",
1396 rulla
->flags
, rulla
->packets_flooded
,
1397 get_status_string(rulla
->status
));
1398 pr_info("%s\n", buf
);
1402 if (!hlist_empty(&priv
->lec_no_forward
))
1403 pr_info("No forward\n");
1404 hlist_for_each_entry(rulla
, node
, &priv
->lec_no_forward
, next
) {
1406 offset
+= sprintf(buf
+ offset
, "Mac: %pM", rulla
->mac_addr
);
1407 offset
+= sprintf(buf
+ offset
, " Atm:");
1408 for (j
= 0; j
< ATM_ESA_LEN
; j
++) {
1409 offset
+= sprintf(buf
+ offset
, "%2.2x ",
1410 rulla
->atm_addr
[j
] & 0xff);
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,
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
));
1424 pr_info("%s\n", buf
);
1427 if (!hlist_empty(&priv
->lec_arp_empty_ones
))
1428 pr_info("Empty ones\n");
1429 hlist_for_each_entry(rulla
, node
, &priv
->lec_arp_empty_ones
, next
) {
1431 offset
+= sprintf(buf
+ offset
, "Mac: %pM", rulla
->mac_addr
);
1432 offset
+= sprintf(buf
+ offset
, " Atm:");
1433 for (j
= 0; j
< ATM_ESA_LEN
; j
++) {
1434 offset
+= sprintf(buf
+ offset
, "%2.2x ",
1435 rulla
->atm_addr
[j
] & 0xff);
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,
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
));
1452 if (!hlist_empty(&priv
->mcast_fwds
))
1453 pr_info("Multicast Forward VCCs\n");
1454 hlist_for_each_entry(rulla
, node
, &priv
->mcast_fwds
, next
) {
1456 offset
+= sprintf(buf
+ offset
, "Mac: %pM", rulla
->mac_addr
);
1457 offset
+= sprintf(buf
+ offset
, " Atm:");
1458 for (j
= 0; j
< ATM_ESA_LEN
; j
++) {
1459 offset
+= sprintf(buf
+ offset
, "%2.2x ",
1460 rulla
->atm_addr
[j
] & 0xff);
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,
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
));
1474 pr_info("%s\n", buf
);
1479 #define dump_arp_table(priv) do { } while (0)
1483 * Destruction of arp-cache
1485 static void lec_arp_destroy(struct lec_priv
*priv
)
1487 unsigned long flags
;
1488 struct hlist_node
*node
, *next
;
1489 struct lec_arp_table
*entry
;
1492 cancel_delayed_work_sync(&priv
->lec_arp_work
);
1495 * Remove all entries
1498 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
1499 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++) {
1500 hlist_for_each_entry_safe(entry
, node
, next
,
1501 &priv
->lec_arp_tables
[i
], next
) {
1502 lec_arp_remove(priv
, entry
);
1505 INIT_HLIST_HEAD(&priv
->lec_arp_tables
[i
]);
1508 hlist_for_each_entry_safe(entry
, node
, next
,
1509 &priv
->lec_arp_empty_ones
, next
) {
1510 del_timer_sync(&entry
->timer
);
1511 lec_arp_clear_vccs(entry
);
1512 hlist_del(&entry
->next
);
1515 INIT_HLIST_HEAD(&priv
->lec_arp_empty_ones
);
1517 hlist_for_each_entry_safe(entry
, node
, next
,
1518 &priv
->lec_no_forward
, next
) {
1519 del_timer_sync(&entry
->timer
);
1520 lec_arp_clear_vccs(entry
);
1521 hlist_del(&entry
->next
);
1524 INIT_HLIST_HEAD(&priv
->lec_no_forward
);
1526 hlist_for_each_entry_safe(entry
, node
, next
, &priv
->mcast_fwds
, next
) {
1527 /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
1528 lec_arp_clear_vccs(entry
);
1529 hlist_del(&entry
->next
);
1532 INIT_HLIST_HEAD(&priv
->mcast_fwds
);
1533 priv
->mcast_vcc
= NULL
;
1534 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
1538 * Find entry by mac_address
1540 static struct lec_arp_table
*lec_arp_find(struct lec_priv
*priv
,
1541 const unsigned char *mac_addr
)
1543 struct hlist_node
*node
;
1544 struct hlist_head
*head
;
1545 struct lec_arp_table
*entry
;
1547 pr_debug("%pM\n", mac_addr
);
1549 head
= &priv
->lec_arp_tables
[HASH(mac_addr
[ETH_ALEN
- 1])];
1550 hlist_for_each_entry(entry
, node
, head
, next
) {
1551 if (ether_addr_equal(mac_addr
, entry
->mac_addr
))
1557 static struct lec_arp_table
*make_entry(struct lec_priv
*priv
,
1558 const unsigned char *mac_addr
)
1560 struct lec_arp_table
*to_return
;
1562 to_return
= kzalloc(sizeof(struct lec_arp_table
), GFP_ATOMIC
);
1564 pr_info("LEC: Arp entry kmalloc failed\n");
1567 memcpy(to_return
->mac_addr
, mac_addr
, ETH_ALEN
);
1568 INIT_HLIST_NODE(&to_return
->next
);
1569 setup_timer(&to_return
->timer
, lec_arp_expire_arp
,
1570 (unsigned long)to_return
);
1571 to_return
->last_used
= jiffies
;
1572 to_return
->priv
= priv
;
1573 skb_queue_head_init(&to_return
->tx_wait
);
1574 atomic_set(&to_return
->usage
, 1);
1578 /* Arp sent timer expired */
1579 static void lec_arp_expire_arp(unsigned long data
)
1581 struct lec_arp_table
*entry
;
1583 entry
= (struct lec_arp_table
*)data
;
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
);
1592 send_to_lecd(entry
->priv
, l_arp_xmt
,
1593 entry
->mac_addr
, NULL
, NULL
);
1596 mod_timer(&entry
->timer
, jiffies
+ (1 * HZ
));
1600 /* Unknown/unused vcc expire, remove associated entry */
1601 static void lec_arp_expire_vcc(unsigned long data
)
1603 unsigned long flags
;
1604 struct lec_arp_table
*to_remove
= (struct lec_arp_table
*)data
;
1605 struct lec_priv
*priv
= (struct lec_priv
*)to_remove
->priv
;
1607 del_timer(&to_remove
->timer
);
1609 pr_debug("%p %p: vpi:%d vci:%d\n",
1611 to_remove
->vcc
? to_remove
->recv_vcc
->vpi
: 0,
1612 to_remove
->vcc
? to_remove
->recv_vcc
->vci
: 0);
1614 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
1615 hlist_del(&to_remove
->next
);
1616 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
1618 lec_arp_clear_vccs(to_remove
);
1619 lec_arp_put(to_remove
);
1622 static bool __lec_arp_check_expire(struct lec_arp_table
*entry
,
1624 struct lec_priv
*priv
)
1626 unsigned long time_to_check
;
1628 if ((entry
->flags
) & LEC_REMOTE_FLAG
&& priv
->topology_change
)
1629 time_to_check
= priv
->forward_delay_time
;
1631 time_to_check
= priv
->aging_time
;
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 */
1639 pr_debug("Entry timed out\n");
1640 lec_arp_remove(priv
, entry
);
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
,
1656 if (entry
->status
== ESI_FLUSH_PENDING
&&
1657 time_after_eq(now
, entry
->timestamp
+
1658 priv
->path_switching_delay
)) {
1659 lec_arp_hold(entry
);
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.
1682 static void lec_arp_check_expire(struct work_struct
*work
)
1684 unsigned long flags
;
1685 struct lec_priv
*priv
=
1686 container_of(work
, struct lec_priv
, lec_arp_work
.work
);
1687 struct hlist_node
*node
, *next
;
1688 struct lec_arp_table
*entry
;
1692 pr_debug("%p\n", priv
);
1695 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
1696 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++) {
1697 hlist_for_each_entry_safe(entry
, node
, next
,
1698 &priv
->lec_arp_tables
[i
], next
) {
1699 if (__lec_arp_check_expire(entry
, now
, priv
)) {
1700 struct sk_buff
*skb
;
1701 struct atm_vcc
*vcc
= entry
->vcc
;
1703 spin_unlock_irqrestore(&priv
->lec_arp_lock
,
1705 while ((skb
= skb_dequeue(&entry
->tx_wait
)))
1707 entry
->last_used
= jiffies
;
1708 entry
->status
= ESI_FORWARD_DIRECT
;
1715 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
1717 schedule_delayed_work(&priv
->lec_arp_work
, LEC_ARP_REFRESH_INTERVAL
);
1721 * Try to find vcc where mac_address is attached.
1724 static struct atm_vcc
*lec_arp_resolve(struct lec_priv
*priv
,
1725 const unsigned char *mac_to_find
,
1727 struct lec_arp_table
**ret_entry
)
1729 unsigned long flags
;
1730 struct lec_arp_table
*entry
;
1731 struct atm_vcc
*found
;
1733 if (mac_to_find
[0] & 0x01) {
1734 switch (priv
->lane_version
) {
1736 return priv
->mcast_vcc
;
1737 case 2: /* LANE2 wants arp for multicast addresses */
1738 if (ether_addr_equal(mac_to_find
, bus_mac
))
1739 return priv
->mcast_vcc
;
1746 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
1747 entry
= lec_arp_find(priv
, mac_to_find
);
1750 if (entry
->status
== ESI_FORWARD_DIRECT
) {
1752 entry
->last_used
= jiffies
;
1753 lec_arp_hold(entry
);
1759 * If the LE_ARP cache entry is still pending, reset count to 0
1760 * so another LE_ARP request can be made for this frame.
1762 if (entry
->status
== ESI_ARP_PENDING
)
1763 entry
->no_tries
= 0;
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
1770 if (entry
->status
!= ESI_FLUSH_PENDING
&&
1771 entry
->packets_flooded
<
1772 priv
->maximum_unknown_frame_count
) {
1773 entry
->packets_flooded
++;
1774 pr_debug("Flooding..\n");
1775 found
= priv
->mcast_vcc
;
1779 * We got here because entry->status == ESI_FLUSH_PENDING
1780 * or BUS flood limit was reached for an entry which is
1781 * in ESI_ARP_PENDING or ESI_VC_PENDING state.
1783 lec_arp_hold(entry
);
1785 pr_debug("entry->status %d entry->vcc %p\n", entry
->status
,
1789 /* No matching entry was found */
1790 entry
= make_entry(priv
, mac_to_find
);
1791 pr_debug("Making entry\n");
1793 found
= priv
->mcast_vcc
;
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
,
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
;
1815 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
1820 lec_addr_delete(struct lec_priv
*priv
, const unsigned char *atm_addr
,
1821 unsigned long permanent
)
1823 unsigned long flags
;
1824 struct hlist_node
*node
, *next
;
1825 struct lec_arp_table
*entry
;
1829 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
1830 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++) {
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
) &&
1835 !(entry
->flags
& LEC_PERMANENT_FLAG
))) {
1836 lec_arp_remove(priv
, entry
);
1839 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
1843 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
1848 * Notifies: Response to arp_request (atm_addr != NULL)
1851 lec_arp_update(struct lec_priv
*priv
, const unsigned char *mac_addr
,
1852 const unsigned char *atm_addr
, unsigned long remoteflag
,
1853 unsigned int targetless_le_arp
)
1855 unsigned long flags
;
1856 struct hlist_node
*node
, *next
;
1857 struct lec_arp_table
*entry
, *tmp
;
1860 pr_debug("%smac:%pM\n",
1861 (targetless_le_arp
) ? "targetless " : "", mac_addr
);
1863 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
1864 entry
= lec_arp_find(priv
, mac_addr
);
1865 if (entry
== NULL
&& targetless_le_arp
)
1867 * LANE2: ignore targetless LE_ARPs for which
1868 * we have no entry in the cache. 7.1.30
1870 if (!hlist_empty(&priv
->lec_arp_empty_ones
)) {
1871 hlist_for_each_entry_safe(entry
, node
, next
,
1872 &priv
->lec_arp_empty_ones
, next
) {
1873 if (memcmp(entry
->atm_addr
, atm_addr
, ATM_ESA_LEN
) == 0) {
1874 hlist_del(&entry
->next
);
1875 del_timer(&entry
->timer
);
1876 tmp
= lec_arp_find(priv
, mac_addr
);
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
);
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
);
1894 entry
->flags
|= LEC_REMOTE_FLAG
;
1896 entry
->flags
&= ~LEC_REMOTE_FLAG
;
1897 pr_debug("After update\n");
1898 dump_arp_table(priv
);
1904 entry
= lec_arp_find(priv
, mac_addr
);
1906 entry
= make_entry(priv
, mac_addr
);
1909 entry
->status
= ESI_UNKNOWN
;
1910 lec_arp_add(priv
, entry
);
1911 /* Temporary, changes before end of function */
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
++) {
1916 hlist_for_each_entry(tmp
, node
,
1917 &priv
->lec_arp_tables
[i
], next
) {
1919 !memcmp(tmp
->atm_addr
, atm_addr
, ATM_ESA_LEN
)) {
1920 /* Vcc to this host exists */
1921 if (tmp
->status
> ESI_VC_PENDING
) {
1923 * ESI_FLUSH_PENDING,
1924 * ESI_FORWARD_DIRECT
1926 entry
->vcc
= tmp
->vcc
;
1927 entry
->old_push
= tmp
->old_push
;
1929 entry
->status
= tmp
->status
;
1935 entry
->flags
|= LEC_REMOTE_FLAG
;
1937 entry
->flags
&= ~LEC_REMOTE_FLAG
;
1938 if (entry
->status
== ESI_ARP_PENDING
|| entry
->status
== ESI_UNKNOWN
) {
1939 entry
->status
= ESI_VC_PENDING
;
1940 send_to_lecd(priv
, l_svc_setup
, entry
->mac_addr
, atm_addr
, NULL
);
1942 pr_debug("After update2\n");
1943 dump_arp_table(priv
);
1945 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
1949 * Notifies: Vcc setup ready
1952 lec_vcc_added(struct lec_priv
*priv
, const struct atmlec_ioc
*ioc_data
,
1953 struct atm_vcc
*vcc
,
1954 void (*old_push
) (struct atm_vcc
*vcc
, struct sk_buff
*skb
))
1956 unsigned long flags
;
1957 struct hlist_node
*node
;
1958 struct lec_arp_table
*entry
;
1959 int i
, found_entry
= 0;
1961 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
1962 /* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */
1963 if (ioc_data
->receive
== 2) {
1964 pr_debug("LEC_ARP: Attaching mcast forward\n");
1966 entry
= lec_arp_find(priv
, bus_mac
);
1968 pr_info("LEC_ARP: Multicast entry not found!\n");
1971 memcpy(entry
->atm_addr
, ioc_data
->atm_addr
, ATM_ESA_LEN
);
1972 entry
->recv_vcc
= vcc
;
1973 entry
->old_recv_push
= old_push
;
1975 entry
= make_entry(priv
, bus_mac
);
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
;
1982 hlist_add_head(&entry
->next
, &priv
->mcast_fwds
);
1984 } else if (ioc_data
->receive
== 1) {
1986 * Vcc which we don't want to make default vcc,
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]);
2000 entry
= make_entry(priv
, bus_mac
);
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
;
2010 hlist_add_head(&entry
->next
, &priv
->lec_no_forward
);
2011 add_timer(&entry
->timer
);
2012 dump_arp_table(priv
);
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]);
2026 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++) {
2027 hlist_for_each_entry(entry
, node
,
2028 &priv
->lec_arp_tables
[i
], next
) {
2030 (ioc_data
->atm_addr
, entry
->atm_addr
,
2031 ATM_ESA_LEN
) == 0) {
2032 pr_debug("LEC_ARP: Attaching data direct\n");
2033 pr_debug("Currently -> Vcc: %d, Rvcc:%d\n",
2034 entry
->vcc
? entry
->vcc
->vci
: 0,
2035 entry
->recv_vcc
? entry
->recv_vcc
->
2038 del_timer(&entry
->timer
);
2040 entry
->old_push
= old_push
;
2041 if (entry
->status
== ESI_VC_PENDING
) {
2042 if (priv
->maximum_unknown_frame_count
2047 entry
->timestamp
= jiffies
;
2051 send_to_lecd(priv
, l_flush_xmt
,
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...
2075 pr_debug("After vcc was added\n");
2076 dump_arp_table(priv
);
2080 * Not found, snatch address from first data packet that arrives
2083 entry
= make_entry(priv
, bus_mac
);
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
;
2091 hlist_add_head(&entry
->next
, &priv
->lec_arp_empty_ones
);
2092 entry
->timer
.expires
= jiffies
+ priv
->vcc_timeout_period
;
2093 entry
->timer
.function
= lec_arp_expire_vcc
;
2094 add_timer(&entry
->timer
);
2095 pr_debug("After vcc was added\n");
2096 dump_arp_table(priv
);
2098 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
2101 static void lec_flush_complete(struct lec_priv
*priv
, unsigned long tran_id
)
2103 unsigned long flags
;
2104 struct hlist_node
*node
;
2105 struct lec_arp_table
*entry
;
2108 pr_debug("%lx\n", tran_id
);
2110 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
2111 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++) {
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
) {
2116 struct sk_buff
*skb
;
2117 struct atm_vcc
*vcc
= entry
->vcc
;
2119 lec_arp_hold(entry
);
2120 spin_unlock_irqrestore(&priv
->lec_arp_lock
,
2122 while ((skb
= skb_dequeue(&entry
->tx_wait
)))
2124 entry
->last_used
= jiffies
;
2125 entry
->status
= ESI_FORWARD_DIRECT
;
2127 pr_debug("LEC_ARP: Flushed\n");
2132 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
2133 dump_arp_table(priv
);
2137 lec_set_flush_tran_id(struct lec_priv
*priv
,
2138 const unsigned char *atm_addr
, unsigned long tran_id
)
2140 unsigned long flags
;
2141 struct hlist_node
*node
;
2142 struct lec_arp_table
*entry
;
2145 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
2146 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++)
2147 hlist_for_each_entry(entry
, node
,
2148 &priv
->lec_arp_tables
[i
], next
) {
2149 if (!memcmp(atm_addr
, entry
->atm_addr
, ATM_ESA_LEN
)) {
2150 entry
->flush_tran_id
= tran_id
;
2151 pr_debug("Set flush transaction id to %lx for %p\n",
2155 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
2158 static int lec_mcast_make(struct lec_priv
*priv
, struct atm_vcc
*vcc
)
2160 unsigned long flags
;
2161 unsigned char mac_addr
[] = {
2162 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
2164 struct lec_arp_table
*to_add
;
2165 struct lec_vcc_priv
*vpriv
;
2168 vpriv
= kmalloc(sizeof(struct lec_vcc_priv
), GFP_KERNEL
);
2172 vpriv
->old_pop
= vcc
->pop
;
2173 vcc
->user_back
= vpriv
;
2175 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
2176 to_add
= make_entry(priv
, mac_addr
);
2178 vcc
->pop
= vpriv
->old_pop
;
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
;
2187 to_add
->old_push
= vcc
->push
;
2188 vcc
->push
= lec_push
;
2189 priv
->mcast_vcc
= vcc
;
2190 lec_arp_add(priv
, to_add
);
2192 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
2196 static void lec_vcc_close(struct lec_priv
*priv
, struct atm_vcc
*vcc
)
2198 unsigned long flags
;
2199 struct hlist_node
*node
, *next
;
2200 struct lec_arp_table
*entry
;
2203 pr_debug("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n", vcc
->vpi
, vcc
->vci
);
2204 dump_arp_table(priv
);
2206 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
2208 for (i
= 0; i
< LEC_ARP_TABLE_SIZE
; i
++) {
2209 hlist_for_each_entry_safe(entry
, node
, next
,
2210 &priv
->lec_arp_tables
[i
], next
) {
2211 if (vcc
== entry
->vcc
) {
2212 lec_arp_remove(priv
, entry
);
2214 if (priv
->mcast_vcc
== vcc
)
2215 priv
->mcast_vcc
= NULL
;
2220 hlist_for_each_entry_safe(entry
, node
, next
,
2221 &priv
->lec_arp_empty_ones
, next
) {
2222 if (entry
->vcc
== vcc
) {
2223 lec_arp_clear_vccs(entry
);
2224 del_timer(&entry
->timer
);
2225 hlist_del(&entry
->next
);
2230 hlist_for_each_entry_safe(entry
, node
, next
,
2231 &priv
->lec_no_forward
, next
) {
2232 if (entry
->recv_vcc
== vcc
) {
2233 lec_arp_clear_vccs(entry
);
2234 del_timer(&entry
->timer
);
2235 hlist_del(&entry
->next
);
2240 hlist_for_each_entry_safe(entry
, node
, next
, &priv
->mcast_fwds
, next
) {
2241 if (entry
->recv_vcc
== vcc
) {
2242 lec_arp_clear_vccs(entry
);
2243 /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
2244 hlist_del(&entry
->next
);
2249 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
2250 dump_arp_table(priv
);
2254 lec_arp_check_empties(struct lec_priv
*priv
,
2255 struct atm_vcc
*vcc
, struct sk_buff
*skb
)
2257 unsigned long flags
;
2258 struct hlist_node
*node
, *next
;
2259 struct lec_arp_table
*entry
, *tmp
;
2260 struct lecdatahdr_8023
*hdr
= (struct lecdatahdr_8023
*)skb
->data
;
2261 unsigned char *src
= hdr
->h_source
;
2263 spin_lock_irqsave(&priv
->lec_arp_lock
, flags
);
2264 hlist_for_each_entry_safe(entry
, node
, next
,
2265 &priv
->lec_arp_empty_ones
, next
) {
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 */
2272 tmp
= lec_arp_find(priv
, src
);
2274 lec_arp_remove(priv
, tmp
);
2277 hlist_del(&entry
->next
);
2278 lec_arp_add(priv
, entry
);
2282 pr_debug("LEC_ARP: Arp_check_empties: entry not found!\n");
2284 spin_unlock_irqrestore(&priv
->lec_arp_lock
, flags
);
2287 MODULE_LICENSE("GPL");