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[ATM]: [lec] convert lec_arp_table to hlist 

Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Chas Williams 2006-09-29 17:14:27 -07:00 committed by David S. Miller
parent 1c9d3e72a7
commit d0732f649f
3 changed files with 170 additions and 282 deletions
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370
net/atm/lec.c
View File

@ -806,7 +806,7 @@ static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb)
dev_kfree_skb(skb);
return;
}
if (priv->lec_arp_empty_ones) {
if (!hlist_empty(&priv->lec_arp_empty_ones)) {
lec_arp_check_empties(priv, vcc, skb);
}
skb->dev = dev;
@ -998,29 +998,32 @@ static void lec_info(struct seq_file *seq, struct lec_arp_table *entry)
struct lec_state {
unsigned long flags;
struct lec_priv *locked;
struct lec_arp_table *entry;
struct hlist_node *node;
struct net_device *dev;
int itf;
int arp_table;
int misc_table;
};
static void *lec_tbl_walk(struct lec_state *state, struct lec_arp_table *tbl,
static void *lec_tbl_walk(struct lec_state *state, struct hlist_head *tbl,
loff_t *l)
{
struct lec_arp_table *e = state->entry;
struct hlist_node *e = state->node;
struct lec_arp_table *tmp;
if (!e)
e = tbl;
e = tbl->first;
if (e == (void *)1) {
e = tbl;
e = tbl->first;
--*l;
}
for (; e; e = e->next) {
hlist_for_each_entry_from(tmp, e, next) {
if (--*l < 0)
break;
}
state->entry = e;
state->node = e;
return (*l < 0) ? state : NULL;
}
@ -1031,7 +1034,7 @@ static void *lec_arp_walk(struct lec_state *state, loff_t *l,
int p;
for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) {
v = lec_tbl_walk(state, priv->lec_arp_tables[p], l);
v = lec_tbl_walk(state, &priv->lec_arp_tables[p], l);
if (v)
break;
}
@ -1042,10 +1045,10 @@ static void *lec_arp_walk(struct lec_state *state, loff_t *l,
static void *lec_misc_walk(struct lec_state *state, loff_t *l,
struct lec_priv *priv)
{
struct lec_arp_table *lec_misc_tables[] = {
priv->lec_arp_empty_ones,
priv->lec_no_forward,
priv->mcast_fwds
struct hlist_head *lec_misc_tables[] = {
&priv->lec_arp_empty_ones,
&priv->lec_no_forward,
&priv->mcast_fwds
};
void *v = NULL;
int q;
@ -1112,7 +1115,7 @@ static void *lec_seq_start(struct seq_file *seq, loff_t *pos)
state->locked = NULL;
state->arp_table = 0;
state->misc_table = 0;
state->entry = (void *)1;
state->node = (void *)1;
return *pos ? lec_get_idx(state, *pos) : (void *)1;
}
@ -1148,9 +1151,10 @@ static int lec_seq_show(struct seq_file *seq, void *v)
else {
struct lec_state *state = seq->private;
struct net_device *dev = state->dev;
struct lec_arp_table *entry = hlist_entry(state->node, struct lec_arp_table, next);
seq_printf(seq, "%s ", dev->name);
lec_info(seq, state->entry);
lec_info(seq, entry);
}
return 0;
}
@ -1455,8 +1459,11 @@ static void lec_arp_init(struct lec_priv *priv)
unsigned short i;
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
priv->lec_arp_tables[i] = NULL;
INIT_HLIST_HEAD(&priv->lec_arp_tables[i]);
}
INIT_HLIST_HEAD(&priv->lec_arp_empty_ones);
INIT_HLIST_HEAD(&priv->lec_no_forward);
INIT_HLIST_HEAD(&priv->mcast_fwds);
spin_lock_init(&priv->lec_arp_lock);
init_timer(&priv->lec_arp_timer);
priv->lec_arp_timer.expires = jiffies + LEC_ARP_REFRESH_INTERVAL;
@ -1479,7 +1486,7 @@ static void lec_arp_clear_vccs(struct lec_arp_table *entry)
vcc->user_back = NULL;
vcc->push = entry->old_push;
vcc_release_async(vcc, -EPIPE);
vcc = NULL;
entry->vcc = NULL;
}
if (entry->recv_vcc) {
entry->recv_vcc->push = entry->old_recv_push;
@ -1493,27 +1500,17 @@ static void lec_arp_clear_vccs(struct lec_arp_table *entry)
* LANE2: Add to the end of the list to satisfy 8.1.13
*/
static inline void
lec_arp_add(struct lec_priv *priv, struct lec_arp_table *to_add)
lec_arp_add(struct lec_priv *priv, struct lec_arp_table *entry)
{
unsigned short place;
struct lec_arp_table *tmp;
struct hlist_head *tmp;
place = HASH(to_add->mac_addr[ETH_ALEN - 1]);
tmp = priv->lec_arp_tables[place];
to_add->next = NULL;
if (tmp == NULL)
priv->lec_arp_tables[place] = to_add;
else { /* add to the end */
while (tmp->next)
tmp = tmp->next;
tmp->next = to_add;
}
tmp = &priv->lec_arp_tables[HASH(entry->mac_addr[ETH_ALEN - 1])];
hlist_add_head(&entry->next, tmp);
DPRINTK("LEC_ARP: Added entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
0xff & to_add->mac_addr[0], 0xff & to_add->mac_addr[1],
0xff & to_add->mac_addr[2], 0xff & to_add->mac_addr[3],
0xff & to_add->mac_addr[4], 0xff & to_add->mac_addr[5]);
0xff & entry->mac_addr[0], 0xff & entry->mac_addr[1],
0xff & entry->mac_addr[2], 0xff & entry->mac_addr[3],
0xff & entry->mac_addr[4], 0xff & entry->mac_addr[5]);
}
/*
@ -1522,40 +1519,26 @@ lec_arp_add(struct lec_priv *priv, struct lec_arp_table *to_add)
static int
lec_arp_remove(struct lec_priv *priv, struct lec_arp_table *to_remove)
{
unsigned short place;
struct lec_arp_table *tmp;
int remove_vcc = 1;
struct hlist_node *node;
struct lec_arp_table *entry;
int i, remove_vcc = 1;
if (!to_remove) {
return -1;
}
place = HASH(to_remove->mac_addr[ETH_ALEN - 1]);
tmp = priv->lec_arp_tables[place];
if (tmp == to_remove) {
priv->lec_arp_tables[place] = tmp->next;
} else {
while (tmp && tmp->next != to_remove) {
tmp = tmp->next;
}
if (!tmp) { /* Entry was not found */
return -1;
}
}
tmp->next = to_remove->next;
hlist_del(&to_remove->next);
del_timer(&to_remove->timer);
/* If this is the only MAC connected to this VCC, also tear down
the VCC */
/* If this is the only MAC connected to this VCC, also tear down the VCC */
if (to_remove->status >= ESI_FLUSH_PENDING) {
/*
* ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT
*/
for (place = 0; place < LEC_ARP_TABLE_SIZE; place++) {
for (tmp = priv->lec_arp_tables[place]; tmp != NULL;
tmp = tmp->next) {
if (memcmp
(tmp->atm_addr, to_remove->atm_addr,
ATM_ESA_LEN) == 0) {
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) {
if (memcmp(to_remove->atm_addr,
entry->atm_addr, ATM_ESA_LEN) == 0) {
remove_vcc = 0;
break;
}
@ -1591,28 +1574,19 @@ static char *get_status_string(unsigned char st)
return "<UNKNOWN>";
}
}
#endif
static void dump_arp_table(struct lec_priv *priv)
{
#if DEBUG_ARP_TABLE
int i, j, offset;
struct hlist_node *node;
struct lec_arp_table *rulla;
char buf[1024];
struct lec_arp_table **lec_arp_tables =
(struct lec_arp_table **)priv->lec_arp_tables;
struct lec_arp_table *lec_arp_empty_ones =
(struct lec_arp_table *)priv->lec_arp_empty_ones;
struct lec_arp_table *lec_no_forward =
(struct lec_arp_table *)priv->lec_no_forward;
struct lec_arp_table *mcast_fwds = priv->mcast_fwds;
char buf[256];
int i, j, offset;
printk("Dump %p:\n", priv);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
rulla = lec_arp_tables[i];
hlist_for_each_entry(rulla, node, &priv->lec_arp_tables[i], next) {
offset = 0;
offset += sprintf(buf, "%d: %p\n", i, rulla);
while (rulla) {
offset += sprintf(buf + offset, "Mac:");
for (j = 0; j < ETH_ALEN; j++) {
offset += sprintf(buf + offset,
@ -1639,15 +1613,13 @@ static void dump_arp_table(struct lec_priv *priv)
"Flags:%x, Packets_flooded:%x, Status: %s ",
rulla->flags, rulla->packets_flooded,
get_status_string(rulla->status));
offset += sprintf(buf + offset, "->%p\n", rulla->next);
rulla = rulla->next;
printk("%s\n", buf);
}
printk("%s", buf);
}
rulla = lec_no_forward;
if (rulla)
if (!hlist_empty(&priv->lec_no_forward))
printk("No forward\n");
while (rulla) {
hlist_for_each_entry(rulla, node, &priv->lec_no_forward, next) {
offset = 0;
offset += sprintf(buf + offset, "Mac:");
for (j = 0; j < ETH_ALEN; j++) {
@ -1671,14 +1643,12 @@ static void dump_arp_table(struct lec_priv *priv)
"Flags:%x, Packets_flooded:%x, Status: %s ",
rulla->flags, rulla->packets_flooded,
get_status_string(rulla->status));
offset += sprintf(buf + offset, "->%lx\n", (long)rulla->next);
rulla = rulla->next;
printk("%s", buf);
printk("%s\n", buf);
}
rulla = lec_arp_empty_ones;
if (rulla)
if (!hlist_empty(&priv->lec_arp_empty_ones))
printk("Empty ones\n");
while (rulla) {
hlist_for_each_entry(rulla, node, &priv->lec_arp_empty_ones, next) {
offset = 0;
offset += sprintf(buf + offset, "Mac:");
for (j = 0; j < ETH_ALEN; j++) {
@ -1702,15 +1672,12 @@ static void dump_arp_table(struct lec_priv *priv)
"Flags:%x, Packets_flooded:%x, Status: %s ",
rulla->flags, rulla->packets_flooded,
get_status_string(rulla->status));
offset += sprintf(buf + offset, "->%lx\n", (long)rulla->next);
rulla = rulla->next;
printk("%s", buf);
}
rulla = mcast_fwds;
if (rulla)
if (!hlist_empty(&priv->mcast_fwds))
printk("Multicast Forward VCCs\n");
while (rulla) {
hlist_for_each_entry(rulla, node, &priv->mcast_fwds, next) {
offset = 0;
offset += sprintf(buf + offset, "Mac:");
for (j = 0; j < ETH_ALEN; j++) {
@ -1734,13 +1701,13 @@ static void dump_arp_table(struct lec_priv *priv)
"Flags:%x, Packets_flooded:%x, Status: %s ",
rulla->flags, rulla->packets_flooded,
get_status_string(rulla->status));
offset += sprintf(buf + offset, "->%lx\n", (long)rulla->next);
rulla = rulla->next;
printk("%s", buf);
printk("%s\n", buf);
}
#endif
}
#else
#define dump_arp_table(priv) do { } while (0)
#endif
/*
* Destruction of arp-cache
@ -1748,7 +1715,8 @@ static void dump_arp_table(struct lec_priv *priv)
static void lec_arp_destroy(struct lec_priv *priv)
{
unsigned long flags;
struct lec_arp_table *entry, *next;
struct hlist_node *node, *next;
struct lec_arp_table *entry;
int i;
del_timer_sync(&priv->lec_arp_timer);
@ -1759,43 +1727,37 @@ static void lec_arp_destroy(struct lec_priv *priv)
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
for (entry = priv->lec_arp_tables[i]; entry != NULL;
entry = next) {
next = entry->next;
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) {
lec_arp_remove(priv, entry);
kfree(entry);
}
INIT_HLIST_HEAD(&priv->lec_arp_tables[i]);
}
entry = priv->lec_arp_empty_ones;
while (entry) {
next = entry->next;
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) {
del_timer_sync(&entry->timer);
lec_arp_clear_vccs(entry);
hlist_del(&entry->next);
kfree(entry);
entry = next;
}
priv->lec_arp_empty_ones = NULL;
entry = priv->lec_no_forward;
while (entry) {
next = entry->next;
INIT_HLIST_HEAD(&priv->lec_arp_empty_ones);
hlist_for_each_entry_safe(entry, node, next, &priv->lec_no_forward, next) {
del_timer_sync(&entry->timer);
lec_arp_clear_vccs(entry);
hlist_del(&entry->next);
kfree(entry);
entry = next;
}
priv->lec_no_forward = NULL;
entry = priv->mcast_fwds;
while (entry) {
next = entry->next;
INIT_HLIST_HEAD(&priv->lec_no_forward);
hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) {
/* No timer, LANEv2 7.1.20 and 2.3.5.3 */
lec_arp_clear_vccs(entry);
hlist_del(&entry->next);
kfree(entry);
entry = next;
}
priv->mcast_fwds = NULL;
INIT_HLIST_HEAD(&priv->mcast_fwds);
priv->mcast_vcc = NULL;
memset(priv->lec_arp_tables, 0,
sizeof(struct lec_arp_table *) * LEC_ARP_TABLE_SIZE);
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
}
@ -1805,20 +1767,19 @@ static void lec_arp_destroy(struct lec_priv *priv)
static struct lec_arp_table *lec_arp_find(struct lec_priv *priv,
unsigned char *mac_addr)
{
unsigned short place;
struct lec_arp_table *to_return;
struct hlist_node *node;
struct hlist_head *head;
struct lec_arp_table *entry;
DPRINTK("LEC_ARP: lec_arp_find :%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
mac_addr[0] & 0xff, mac_addr[1] & 0xff, mac_addr[2] & 0xff,
mac_addr[3] & 0xff, mac_addr[4] & 0xff, mac_addr[5] & 0xff);
place = HASH(mac_addr[ETH_ALEN - 1]);
to_return = priv->lec_arp_tables[place];
while (to_return) {
if (!compare_ether_addr(mac_addr, to_return->mac_addr)) {
return to_return;
head = &priv->lec_arp_tables[HASH(mac_addr[ETH_ALEN - 1])];
hlist_for_each_entry(entry, node, head, next) {
if (!compare_ether_addr(mac_addr, entry->mac_addr)) {
return entry;
}
to_return = to_return->next;
}
return NULL;
}
@ -1834,6 +1795,7 @@ static struct lec_arp_table *make_entry(struct lec_priv *priv,
return NULL;
}
memcpy(to_return->mac_addr, mac_addr, ETH_ALEN);
INIT_HLIST_NODE(&to_return->next);
init_timer(&to_return->timer);
to_return->timer.function = lec_arp_expire_arp;
to_return->timer.data = (unsigned long)to_return;
@ -1871,7 +1833,6 @@ static void lec_arp_expire_vcc(unsigned long data)
unsigned long flags;
struct lec_arp_table *to_remove = (struct lec_arp_table *)data;
struct lec_priv *priv = (struct lec_priv *)to_remove->priv;
struct lec_arp_table *entry = NULL;
del_timer(&to_remove->timer);
@ -1879,30 +1840,9 @@ static void lec_arp_expire_vcc(unsigned long data)
to_remove, priv,
to_remove->vcc ? to_remove->recv_vcc->vpi : 0,
to_remove->vcc ? to_remove->recv_vcc->vci : 0);
DPRINTK("eo:%p nf:%p\n", priv->lec_arp_empty_ones,
priv->lec_no_forward);
spin_lock_irqsave(&priv->lec_arp_lock, flags);
if (to_remove == priv->lec_arp_empty_ones)
priv->lec_arp_empty_ones = to_remove->next;
else {
entry = priv->lec_arp_empty_ones;
while (entry && entry->next != to_remove)
entry = entry->next;
if (entry)
entry->next = to_remove->next;
}
if (!entry) {
if (to_remove == priv->lec_no_forward) {
priv->lec_no_forward = to_remove->next;
} else {
entry = priv->lec_no_forward;
while (entry && entry->next != to_remove)
entry = entry->next;
if (entry)
entry->next = to_remove->next;
}
}
hlist_del(&to_remove->next);
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
lec_arp_clear_vccs(to_remove);
@ -1929,18 +1869,17 @@ static void lec_arp_check_expire(unsigned long data)
{
unsigned long flags;
struct lec_priv *priv = (struct lec_priv *)data;
struct lec_arp_table *entry, *next;
struct hlist_node *node, *next;
struct lec_arp_table *entry;
unsigned long now;
unsigned long time_to_check;
int i;
DPRINTK("lec_arp_check_expire %p\n", priv);
DPRINTK("expire: eo:%p nf:%p\n", priv->lec_arp_empty_ones,
priv->lec_no_forward);
now = jiffies;
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
for (entry = priv->lec_arp_tables[i]; entry != NULL;) {
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) {
if ((entry->flags) & LEC_REMOTE_FLAG &&
priv->topology_change)
time_to_check = priv->forward_delay_time;
@ -1954,10 +1893,8 @@ static void lec_arp_check_expire(unsigned long data)
&& !(entry->mac_addr[0] & 0x01)) { /* LANE2: 7.1.20 */
/* Remove entry */
DPRINTK("LEC:Entry timed out\n");
next = entry->next;
lec_arp_remove(priv, entry);
kfree(entry);
entry = next;
} else {
/* Something else */
if ((entry->status == ESI_VC_PENDING ||
@ -1988,7 +1925,6 @@ static void lec_arp_check_expire(unsigned long data)
entry->last_used = jiffies;
entry->status = ESI_FORWARD_DIRECT;
}
entry = entry->next;
}
}
}
@ -2100,15 +2036,14 @@ lec_addr_delete(struct lec_priv *priv, unsigned char *atm_addr,
unsigned long permanent)
{
unsigned long flags;
struct lec_arp_table *entry, *next;
struct hlist_node *node, *next;
struct lec_arp_table *entry;
int i;
DPRINTK("lec_addr_delete\n");
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
for (entry = priv->lec_arp_tables[i]; entry != NULL;
entry = next) {
next = entry->next;
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) {
if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)
&& (permanent ||
!(entry->flags & LEC_PERMANENT_FLAG))) {
@ -2132,6 +2067,7 @@ lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
unsigned int targetless_le_arp)
{
unsigned long flags;
struct hlist_node *node, *next;
struct lec_arp_table *entry, *tmp;
int i;
@ -2147,23 +2083,10 @@ lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
* LANE2: ignore targetless LE_ARPs for which
* we have no entry in the cache. 7.1.30
*/
if (priv->lec_arp_empty_ones) {
entry = priv->lec_arp_empty_ones;
if (!memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN)) {
priv->lec_arp_empty_ones = entry->next;
} else {
while (entry->next && memcmp(entry->next->atm_addr,
atm_addr, ATM_ESA_LEN))
entry = entry->next;
if (entry->next) {
tmp = entry;
entry = entry->next;
tmp->next = entry->next;
} else
entry = NULL;
}
if (entry) {
if (!hlist_empty(&priv->lec_arp_empty_ones)) {
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) {
if (memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN) == 0) {
hlist_del(&entry->next);
del_timer(&entry->timer);
tmp = lec_arp_find(priv, mac_addr);
if (tmp) {
@ -2191,6 +2114,8 @@ lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
goto out;
}
}
}
entry = lec_arp_find(priv, mac_addr);
if (!entry) {
entry = make_entry(priv, mac_addr);
@ -2203,7 +2128,7 @@ lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN);
del_timer(&entry->timer);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
for (tmp = priv->lec_arp_tables[i]; tmp; tmp = tmp->next) {
hlist_for_each_entry(tmp, node, &priv->lec_arp_tables[i], next) {
if (entry != tmp &&
!memcmp(tmp->atm_addr, atm_addr, ATM_ESA_LEN)) {
/* Vcc to this host exists */
@ -2226,8 +2151,7 @@ lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
entry->flags &= ~LEC_REMOTE_FLAG;
if (entry->status == ESI_ARP_PENDING || entry->status == ESI_UNKNOWN) {
entry->status = ESI_VC_PENDING;
send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr,
NULL);
send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL);
}
DPRINTK("After update2\n");
dump_arp_table(priv);
@ -2244,6 +2168,7 @@ lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb))
{
unsigned long flags;
struct hlist_node *node;
struct lec_arp_table *entry;
int i, found_entry = 0;
@ -2269,8 +2194,7 @@ lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
entry->recv_vcc = vcc;
entry->old_recv_push = old_push;
entry->next = priv->mcast_fwds;
priv->mcast_fwds = entry;
hlist_add_head(&entry->next, &priv->mcast_fwds);
goto out;
} else if (ioc_data->receive == 1) {
/*
@ -2300,9 +2224,8 @@ lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
entry->status = ESI_UNKNOWN;
entry->timer.expires = jiffies + priv->vcc_timeout_period;
entry->timer.function = lec_arp_expire_vcc;
hlist_add_head(&entry->next, &priv->lec_no_forward);
add_timer(&entry->timer);
entry->next = priv->lec_no_forward;
priv->lec_no_forward = entry;
dump_arp_table(priv);
goto out;
}
@ -2320,8 +2243,7 @@ lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
ioc_data->atm_addr[16], ioc_data->atm_addr[17],
ioc_data->atm_addr[18], ioc_data->atm_addr[19]);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
for (entry = priv->lec_arp_tables[i]; entry;
entry = entry->next) {
hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) {
if (memcmp
(ioc_data->atm_addr, entry->atm_addr,
ATM_ESA_LEN) == 0) {
@ -2384,8 +2306,7 @@ lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
memset(entry->mac_addr, 0, ETH_ALEN);
entry->status = ESI_UNKNOWN;
entry->next = priv->lec_arp_empty_ones;
priv->lec_arp_empty_ones = entry;
hlist_add_head(&entry->next, &priv->lec_arp_empty_ones);
entry->timer.expires = jiffies + priv->vcc_timeout_period;
entry->timer.function = lec_arp_expire_vcc;
add_timer(&entry->timer);
@ -2398,14 +2319,14 @@ out:
static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id)
{
unsigned long flags;
struct hlist_node *node;
struct lec_arp_table *entry;
int i;
DPRINTK("LEC:lec_flush_complete %lx\n", tran_id);
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
for (entry = priv->lec_arp_tables[i]; entry;
entry = entry->next) {
hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) {
if (entry->flush_tran_id == tran_id
&& entry->status == ESI_FLUSH_PENDING) {
struct sk_buff *skb;
@ -2427,19 +2348,19 @@ lec_set_flush_tran_id(struct lec_priv *priv,
unsigned char *atm_addr, unsigned long tran_id)
{
unsigned long flags;
struct hlist_node *node;
struct lec_arp_table *entry;
int i;
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++)
for (entry = priv->lec_arp_tables[i]; entry;
entry = entry->next)
hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) {
if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) {
entry->flush_tran_id = tran_id;
DPRINTK
("Set flush transaction id to %lx for %p\n",
DPRINTK("Set flush transaction id to %lx for %p\n",
tran_id, entry);
}
}
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
}
@ -2483,15 +2404,17 @@ out:
static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc)
{
unsigned long flags;
struct lec_arp_table *entry, *next;
struct hlist_node *node, *next;
struct lec_arp_table *entry;
int i;
DPRINTK("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n", vcc->vpi, vcc->vci);
dump_arp_table(priv);
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
for (entry = priv->lec_arp_tables[i]; entry; entry = next) {
next = entry->next;
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) {
if (vcc == entry->vcc) {
lec_arp_remove(priv, entry);
kfree(entry);
@ -2502,49 +2425,31 @@ static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc)
}
}
entry = priv->lec_arp_empty_ones;
priv->lec_arp_empty_ones = NULL;
while (entry != NULL) {
next = entry->next;
if (entry->vcc == vcc) { /* leave it out from the list */
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) {
if (entry->vcc == vcc) {
lec_arp_clear_vccs(entry);
del_timer(&entry->timer);
hlist_del(&entry->next);
kfree(entry);
} else { /* put it back to the list */
entry->next = priv->lec_arp_empty_ones;
priv->lec_arp_empty_ones = entry;
}
entry = next;
}
entry = priv->lec_no_forward;
priv->lec_no_forward = NULL;
while (entry != NULL) {
next = entry->next;
hlist_for_each_entry_safe(entry, node, next, &priv->lec_no_forward, next) {
if (entry->recv_vcc == vcc) {
lec_arp_clear_vccs(entry);
del_timer(&entry->timer);
hlist_del(&entry->next);
kfree(entry);
} else {
entry->next = priv->lec_no_forward;
priv->lec_no_forward = entry;
}
entry = next;
}
entry = priv->mcast_fwds;
priv->mcast_fwds = NULL;
while (entry != NULL) {
next = entry->next;
hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) {
if (entry->recv_vcc == vcc) {
lec_arp_clear_vccs(entry);
/* No timer, LANEv2 7.1.20 and 2.3.5.3 */
hlist_del(&entry->next);
kfree(entry);
} else {
entry->next = priv->mcast_fwds;
priv->mcast_fwds = entry;
}
entry = next;
}
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
@ -2556,7 +2461,8 @@ lec_arp_check_empties(struct lec_priv *priv,
struct atm_vcc *vcc, struct sk_buff *skb)
{
unsigned long flags;
struct lec_arp_table *entry, *prev;
struct hlist_node *node, *next;
struct lec_arp_table *entry, *tmp;
struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data;
unsigned char *src;
#ifdef CONFIG_TR
@ -2569,41 +2475,23 @@ lec_arp_check_empties(struct lec_priv *priv,
src = hdr->h_source;
spin_lock_irqsave(&priv->lec_arp_lock, flags);
entry = priv->lec_arp_empty_ones;
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) {
if (vcc == entry->vcc) {
del_timer(&entry->timer);
memcpy(entry->mac_addr, src, ETH_ALEN);
entry->status = ESI_FORWARD_DIRECT;
entry->last_used = jiffies;
priv->lec_arp_empty_ones = entry->next;
/* We might have got an entry */
if ((prev = lec_arp_find(priv, src))) {
lec_arp_remove(priv, prev);
kfree(prev);
if ((tmp = lec_arp_find(priv, src))) {
lec_arp_remove(priv, tmp);
kfree(tmp);
}
hlist_del(&entry->next);
lec_arp_add(priv, entry);
goto out;
}
prev = entry;
entry = entry->next;
while (entry && entry->vcc != vcc) {
prev = entry;
entry = entry->next;
}
if (!entry) {
DPRINTK("LEC_ARP: Arp_check_empties: entry not found!\n");
goto out;
}
del_timer(&entry->timer);
memcpy(entry->mac_addr, src, ETH_ALEN);
entry->status = ESI_FORWARD_DIRECT;
entry->last_used = jiffies;
prev->next = entry->next;
if ((prev = lec_arp_find(priv, src))) {
lec_arp_remove(priv, prev);
kfree(prev);
}
lec_arp_add(priv, entry);
out:
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
}

8
net/atm/lec.h
View File

@ -72,18 +72,18 @@ struct lane2_ops {
struct lec_priv {
struct net_device_stats stats;
unsigned short lecid; /* Lecid of this client */
struct lec_arp_table *lec_arp_empty_ones;
struct hlist_head lec_arp_empty_ones;
/* Used for storing VCC's that don't have a MAC address attached yet */
struct lec_arp_table *lec_arp_tables[LEC_ARP_TABLE_SIZE];
struct hlist_head lec_arp_tables[LEC_ARP_TABLE_SIZE];
/* Actual LE ARP table */
struct lec_arp_table *lec_no_forward;
struct hlist_head lec_no_forward;
/*
* Used for storing VCC's (and forward packets from) which are to
* age out by not using them to forward packets.
* This is because to some LE clients there will be 2 VCCs. Only
* one of them gets used.
*/
struct lec_arp_table *mcast_fwds;
struct hlist_head mcast_fwds;
/*
* With LANEv2 it is possible that BUS (or a special multicast server)
* establishes multiple Multicast Forward VCCs to us. This list

2
net/atm/lec_arpc.h
View File

@ -11,7 +11,7 @@
#include <linux/atmlec.h>
struct lec_arp_table {
struct lec_arp_table *next; /* Linked entry list */
struct hlist_node next; /* Linked entry list */
unsigned char atm_addr[ATM_ESA_LEN]; /* Atm address */
unsigned char mac_addr[ETH_ALEN]; /* Mac address */
int is_rdesc; /* Mac address is a route descriptor */