int hna_global_seq_print_text(struct seq_file *seq, void *offset)
{
struct net_device *net_dev = (struct net_device *)seq->private;
struct bat_priv *bat_priv = netdev_priv(net_dev);
struct hna_global_entry *hna_global_entry;
HASHIT(hashit);
HASHIT(hashit_count);
unsigned long flags;
size_t buf_size, pos;
char *buff;
if (!bat_priv->primary_if) {
return seq_printf(seq, "BATMAN mesh %s disabled - "
"please specify interfaces to enable it\n",
net_dev->name);
}
seq_printf(seq, "Globally announced HNAs received via the mesh %s\n",
net_dev->name);
spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags);
buf_size = 1;
/* Estimate length for: " * xx:xx:xx:xx:xx:xx via xx:xx:xx:xx:xx:xx\n"*/
while (hash_iterate(bat_priv->hna_global_hash, &hashit_count))
buf_size += 43;
buff = kmalloc(buf_size, GFP_ATOMIC);
if (!buff) {
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags);
return -ENOMEM;
}
buff[0] = '\0';
pos = 0;
while (hash_iterate(bat_priv->hna_global_hash, &hashit)) {
hna_global_entry = hashit.bucket->data;
pos += snprintf(buff + pos, 44,
" * %pM via %pM\n", hna_global_entry->addr,
hna_global_entry->orig_node->orig);
}
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags);
seq_printf(seq, "%s", buff);
kfree(buff);
return 0;
}
static void hna_local_purge(struct work_struct *work)
{
struct delayed_work *delayed_work =
container_of(work, struct delayed_work, work);
struct bat_priv *bat_priv =
container_of(delayed_work, struct bat_priv, hna_work);
struct hna_local_entry *hna_local_entry;
HASHIT(hashit);
unsigned long flags;
unsigned long timeout;
spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
while (hash_iterate(bat_priv->hna_local_hash, &hashit)) {
hna_local_entry = hashit.bucket->data;
timeout = hna_local_entry->last_seen + LOCAL_HNA_TIMEOUT * HZ;
if ((!hna_local_entry->never_purge) &&
time_after(jiffies, timeout))
hna_local_del(bat_priv, hna_local_entry,
"address timed out");
}
spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
hna_local_start_timer(bat_priv);
}
int hna_local_fill_buffer(struct bat_priv *bat_priv,
unsigned char *buff, int buff_len)
{
struct hna_local_entry *hna_local_entry;
HASHIT(hashit);
int i = 0;
unsigned long flags;
spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
while (hash_iterate(bat_priv->hna_local_hash, &hashit)) {
if (buff_len < (i + 1) * ETH_ALEN)
break;
hna_local_entry = hashit.bucket->data;
memcpy(buff + (i * ETH_ALEN), hna_local_entry->addr, ETH_ALEN);
i++;
}
/* if we did not get all new local hnas see you next time ;-) */
if (i == bat_priv->num_local_hna)
atomic_set(&bat_priv->hna_local_changed, 0);
spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
return i;
}
int hna_global_fill_buffer_text(struct net_device *net_dev, char *buff,
size_t count, loff_t off)
{
struct bat_priv *bat_priv = netdev_priv(net_dev);
struct hna_global_entry *hna_global_entry;
HASHIT(hashit);
int bytes_written = 0;
unsigned long flags;
size_t hdr_len;
if (!bat_priv->primary_if) {
if (off == 0)
return sprintf(buff,
"BATMAN mesh %s disabled - "
"please specify interfaces to enable it\n",
net_dev->name);
return 0;
}
hdr_len = sprintf(buff,
"Globally announced HNAs received via the mesh %s "
"(translation table):\n",
net_dev->name);
if (off < hdr_len)
bytes_written = hdr_len;
spin_lock_irqsave(&hna_global_hash_lock, flags);
while (hash_iterate(hna_global_hash, &hashit)) {
hdr_len += 43;
if (count < bytes_written + 44)
break;
if (off >= hdr_len)
continue;
hna_global_entry = hashit.bucket->data;
bytes_written += snprintf(buff + bytes_written, 44,
" * " MAC_FMT " via " MAC_FMT "\n",
hna_global_entry->addr[0],
hna_global_entry->addr[1],
hna_global_entry->addr[2],
hna_global_entry->addr[3],
hna_global_entry->addr[4],
hna_global_entry->addr[5],
hna_global_entry->orig_node->orig[0],
hna_global_entry->orig_node->orig[1],
hna_global_entry->orig_node->orig[2],
hna_global_entry->orig_node->orig[3],
hna_global_entry->orig_node->orig[4],
hna_global_entry->orig_node->orig[5]);
}
spin_unlock_irqrestore(&hna_global_hash_lock, flags);
return bytes_written;
}
int hna_local_fill_buffer_text(struct net_device *net_dev, char *buff,
size_t count, loff_t off)
{
struct bat_priv *bat_priv = netdev_priv(net_dev);
struct hna_local_entry *hna_local_entry;
HASHIT(hashit);
int bytes_written = 0;
unsigned long flags;
size_t hdr_len;
if (!bat_priv->primary_if) {
if (off == 0)
return sprintf(buff,
"BATMAN mesh %s disabled - "
"please specify interfaces to enable it\n",
net_dev->name);
return 0;
}
hdr_len = sprintf(buff,
"Locally retrieved addresses (from %s) "
"announced via HNA:\n",
net_dev->name);
if (off < hdr_len)
bytes_written = hdr_len;
spin_lock_irqsave(&hna_local_hash_lock, flags);
while (hash_iterate(hna_local_hash, &hashit)) {
hdr_len += 21;
if (count < bytes_written + 22)
break;
if (off >= hdr_len)
continue;
hna_local_entry = hashit.bucket->data;
bytes_written += snprintf(buff + bytes_written, 22,
" * " MAC_FMT "\n",
hna_local_entry->addr[0],
hna_local_entry->addr[1],
hna_local_entry->addr[2],
hna_local_entry->addr[3],
hna_local_entry->addr[4],
hna_local_entry->addr[5]);
}
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
return bytes_written;
}
void hna_local_purge(struct work_struct *work)
{
struct hna_local_entry *hna_local_entry;
HASHIT(hashit);
unsigned long flags;
unsigned long timeout;
spin_lock_irqsave(&hna_local_hash_lock, flags);
while (hash_iterate(hna_local_hash, &hashit)) {
hna_local_entry = hashit.bucket->data;
timeout = hna_local_entry->last_seen +
((LOCAL_HNA_TIMEOUT / 1000) * HZ);
if ((!hna_local_entry->never_purge) &&
time_after(jiffies, timeout))
hna_local_del(hna_local_entry, "address timed out");
}
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
hna_local_start_timer();
}