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Diffstat (limited to 'net/batman-adv/vis.c')
-rw-r--r--net/batman-adv/vis.c726
1 files changed, 353 insertions, 373 deletions
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index cec216fb77c..2a2ea068146 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -1,5 +1,4 @@
-/*
- * Copyright (C) 2008-2012 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2008-2012 B.A.T.M.A.N. contributors:
*
* Simon Wunderlich
*
@@ -16,7 +15,6 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
- *
*/
#include "main.h"
@@ -28,16 +26,19 @@
#include "hash.h"
#include "originator.h"
-#define MAX_VIS_PACKET_SIZE 1000
+#define BATADV_MAX_VIS_PACKET_SIZE 1000
-static void start_vis_timer(struct bat_priv *bat_priv);
+static void batadv_start_vis_timer(struct batadv_priv *bat_priv);
/* free the info */
-static void free_info(struct kref *ref)
+static void batadv_free_info(struct kref *ref)
{
- struct vis_info *info = container_of(ref, struct vis_info, refcount);
- struct bat_priv *bat_priv = info->bat_priv;
- struct recvlist_node *entry, *tmp;
+ struct batadv_vis_info *info;
+ struct batadv_priv *bat_priv;
+ struct batadv_recvlist_node *entry, *tmp;
+
+ info = container_of(ref, struct batadv_vis_info, refcount);
+ bat_priv = info->bat_priv;
list_del_init(&info->send_list);
spin_lock_bh(&bat_priv->vis_list_lock);
@@ -52,29 +53,30 @@ static void free_info(struct kref *ref)
}
/* Compare two vis packets, used by the hashing algorithm */
-static int vis_info_cmp(const struct hlist_node *node, const void *data2)
+static int batadv_vis_info_cmp(const struct hlist_node *node, const void *data2)
{
- const struct vis_info *d1, *d2;
- const struct vis_packet *p1, *p2;
+ const struct batadv_vis_info *d1, *d2;
+ const struct batadv_vis_packet *p1, *p2;
- d1 = container_of(node, struct vis_info, hash_entry);
+ d1 = container_of(node, struct batadv_vis_info, hash_entry);
d2 = data2;
- p1 = (struct vis_packet *)d1->skb_packet->data;
- p2 = (struct vis_packet *)d2->skb_packet->data;
- return compare_eth(p1->vis_orig, p2->vis_orig);
+ p1 = (struct batadv_vis_packet *)d1->skb_packet->data;
+ p2 = (struct batadv_vis_packet *)d2->skb_packet->data;
+ return batadv_compare_eth(p1->vis_orig, p2->vis_orig);
}
-/* hash function to choose an entry in a hash table of given size */
-/* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */
-static uint32_t vis_info_choose(const void *data, uint32_t size)
+/* hash function to choose an entry in a hash table of given size
+ * hash algorithm from http://en.wikipedia.org/wiki/Hash_table
+ */
+static uint32_t batadv_vis_info_choose(const void *data, uint32_t size)
{
- const struct vis_info *vis_info = data;
- const struct vis_packet *packet;
+ const struct batadv_vis_info *vis_info = data;
+ const struct batadv_vis_packet *packet;
const unsigned char *key;
uint32_t hash = 0;
size_t i;
- packet = (struct vis_packet *)vis_info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)vis_info->skb_packet->data;
key = packet->vis_orig;
for (i = 0; i < ETH_ALEN; i++) {
hash += key[i];
@@ -89,24 +91,24 @@ static uint32_t vis_info_choose(const void *data, uint32_t size)
return hash % size;
}
-static struct vis_info *vis_hash_find(struct bat_priv *bat_priv,
- const void *data)
+static struct batadv_vis_info *
+batadv_vis_hash_find(struct batadv_priv *bat_priv, const void *data)
{
- struct hashtable_t *hash = bat_priv->vis_hash;
+ struct batadv_hashtable *hash = bat_priv->vis_hash;
struct hlist_head *head;
struct hlist_node *node;
- struct vis_info *vis_info, *vis_info_tmp = NULL;
+ struct batadv_vis_info *vis_info, *vis_info_tmp = NULL;
uint32_t index;
if (!hash)
return NULL;
- index = vis_info_choose(data, hash->size);
+ index = batadv_vis_info_choose(data, hash->size);
head = &hash->table[index];
rcu_read_lock();
hlist_for_each_entry_rcu(vis_info, node, head, hash_entry) {
- if (!vis_info_cmp(node, data))
+ if (!batadv_vis_info_cmp(node, data))
continue;
vis_info_tmp = vis_info;
@@ -118,16 +120,17 @@ static struct vis_info *vis_hash_find(struct bat_priv *bat_priv,
}
/* insert interface to the list of interfaces of one originator, if it
- * does not already exist in the list */
-static void vis_data_insert_interface(const uint8_t *interface,
- struct hlist_head *if_list,
- bool primary)
+ * does not already exist in the list
+ */
+static void batadv_vis_data_insert_interface(const uint8_t *interface,
+ struct hlist_head *if_list,
+ bool primary)
{
- struct if_list_entry *entry;
+ struct batadv_if_list_entry *entry;
struct hlist_node *pos;
hlist_for_each_entry(entry, pos, if_list, list) {
- if (compare_eth(entry->addr, interface))
+ if (batadv_compare_eth(entry->addr, interface))
return;
}
@@ -140,195 +143,145 @@ static void vis_data_insert_interface(const uint8_t *interface,
hlist_add_head(&entry->list, if_list);
}
-static ssize_t vis_data_read_prim_sec(char *buff,
- const struct hlist_head *if_list)
+static void batadv_vis_data_read_prim_sec(struct seq_file *seq,
+ const struct hlist_head *if_list)
{
- struct if_list_entry *entry;
+ struct batadv_if_list_entry *entry;
struct hlist_node *pos;
- size_t len = 0;
hlist_for_each_entry(entry, pos, if_list, list) {
if (entry->primary)
- len += sprintf(buff + len, "PRIMARY, ");
+ seq_printf(seq, "PRIMARY, ");
else
- len += sprintf(buff + len, "SEC %pM, ", entry->addr);
+ seq_printf(seq, "SEC %pM, ", entry->addr);
}
-
- return len;
-}
-
-static size_t vis_data_count_prim_sec(struct hlist_head *if_list)
-{
- struct if_list_entry *entry;
- struct hlist_node *pos;
- size_t count = 0;
-
- hlist_for_each_entry(entry, pos, if_list, list) {
- if (entry->primary)
- count += 9;
- else
- count += 23;
- }
-
- return count;
}
/* read an entry */
-static ssize_t vis_data_read_entry(char *buff,
- const struct vis_info_entry *entry,
- const uint8_t *src, bool primary)
+static ssize_t
+batadv_vis_data_read_entry(struct seq_file *seq,
+ const struct batadv_vis_info_entry *entry,
+ const uint8_t *src, bool primary)
{
- /* maximal length: max(4+17+2, 3+17+1+3+2) == 26 */
if (primary && entry->quality == 0)
- return sprintf(buff, "TT %pM, ", entry->dest);
- else if (compare_eth(entry->src, src))
- return sprintf(buff, "TQ %pM %d, ", entry->dest,
- entry->quality);
+ return seq_printf(seq, "TT %pM, ", entry->dest);
+ else if (batadv_compare_eth(entry->src, src))
+ return seq_printf(seq, "TQ %pM %d, ", entry->dest,
+ entry->quality);
return 0;
}
-int vis_seq_print_text(struct seq_file *seq, void *offset)
+static void
+batadv_vis_data_insert_interfaces(struct hlist_head *list,
+ struct batadv_vis_packet *packet,
+ struct batadv_vis_info_entry *entries)
{
- struct hard_iface *primary_if;
- struct hlist_node *node;
- struct hlist_head *head;
- struct vis_info *info;
- struct vis_packet *packet;
- struct vis_info_entry *entries;
- struct net_device *net_dev = (struct net_device *)seq->private;
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- struct hashtable_t *hash = bat_priv->vis_hash;
- HLIST_HEAD(vis_if_list);
- struct if_list_entry *entry;
- struct hlist_node *pos, *n;
- uint32_t i;
- int j, ret = 0;
- int vis_server = atomic_read(&bat_priv->vis_mode);
- size_t buff_pos, buf_size;
- char *buff;
- int compare;
-
- primary_if = primary_if_get_selected(bat_priv);
- if (!primary_if)
- goto out;
+ int i;
- if (vis_server == VIS_TYPE_CLIENT_UPDATE)
- goto out;
+ for (i = 0; i < packet->entries; i++) {
+ if (entries[i].quality == 0)
+ continue;
- buf_size = 1;
- /* Estimate length */
- spin_lock_bh(&bat_priv->vis_hash_lock);
- for (i = 0; i < hash->size; i++) {
- head = &hash->table[i];
+ if (batadv_compare_eth(entries[i].src, packet->vis_orig))
+ continue;
- rcu_read_lock();
- hlist_for_each_entry_rcu(info, node, head, hash_entry) {
- packet = (struct vis_packet *)info->skb_packet->data;
- entries = (struct vis_info_entry *)
- ((char *)packet + sizeof(*packet));
+ batadv_vis_data_insert_interface(entries[i].src, list, false);
+ }
+}
- for (j = 0; j < packet->entries; j++) {
- if (entries[j].quality == 0)
- continue;
- compare =
- compare_eth(entries[j].src, packet->vis_orig);
- vis_data_insert_interface(entries[j].src,
- &vis_if_list,
- compare);
- }
+static void batadv_vis_data_read_entries(struct seq_file *seq,
+ struct hlist_head *list,
+ struct batadv_vis_packet *packet,
+ struct batadv_vis_info_entry *entries)
+{
+ int i;
+ struct batadv_if_list_entry *entry;
+ struct hlist_node *pos;
- hlist_for_each_entry(entry, pos, &vis_if_list, list) {
- buf_size += 18 + 26 * packet->entries;
+ hlist_for_each_entry(entry, pos, list, list) {
+ seq_printf(seq, "%pM,", entry->addr);
- /* add primary/secondary records */
- if (compare_eth(entry->addr, packet->vis_orig))
- buf_size +=
- vis_data_count_prim_sec(&vis_if_list);
+ for (i = 0; i < packet->entries; i++)
+ batadv_vis_data_read_entry(seq, &entries[i],
+ entry->addr, entry->primary);
- buf_size += 1;
- }
+ /* add primary/secondary records */
+ if (batadv_compare_eth(entry->addr, packet->vis_orig))
+ batadv_vis_data_read_prim_sec(seq, list);
- hlist_for_each_entry_safe(entry, pos, n, &vis_if_list,
- list) {
- hlist_del(&entry->list);
- kfree(entry);
- }
- }
- rcu_read_unlock();
+ seq_printf(seq, "\n");
}
+}
- buff = kmalloc(buf_size, GFP_ATOMIC);
- if (!buff) {
- spin_unlock_bh(&bat_priv->vis_hash_lock);
- ret = -ENOMEM;
- goto out;
- }
- buff[0] = '\0';
- buff_pos = 0;
+static void batadv_vis_seq_print_text_bucket(struct seq_file *seq,
+ const struct hlist_head *head)
+{
+ struct hlist_node *node;
+ struct batadv_vis_info *info;
+ struct batadv_vis_packet *packet;
+ uint8_t *entries_pos;
+ struct batadv_vis_info_entry *entries;
+ struct batadv_if_list_entry *entry;
+ struct hlist_node *pos, *n;
- for (i = 0; i < hash->size; i++) {
- head = &hash->table[i];
+ HLIST_HEAD(vis_if_list);
- rcu_read_lock();
- hlist_for_each_entry_rcu(info, node, head, hash_entry) {
- packet = (struct vis_packet *)info->skb_packet->data;
- entries = (struct vis_info_entry *)
- ((char *)packet + sizeof(*packet));
+ hlist_for_each_entry_rcu(info, node, head, hash_entry) {
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
+ entries_pos = (uint8_t *)packet + sizeof(*packet);
+ entries = (struct batadv_vis_info_entry *)entries_pos;
- for (j = 0; j < packet->entries; j++) {
- if (entries[j].quality == 0)
- continue;
- compare =
- compare_eth(entries[j].src, packet->vis_orig);
- vis_data_insert_interface(entries[j].src,
- &vis_if_list,
- compare);
- }
+ batadv_vis_data_insert_interface(packet->vis_orig, &vis_if_list,
+ true);
+ batadv_vis_data_insert_interfaces(&vis_if_list, packet,
+ entries);
+ batadv_vis_data_read_entries(seq, &vis_if_list, packet,
+ entries);
- hlist_for_each_entry(entry, pos, &vis_if_list, list) {
- buff_pos += sprintf(buff + buff_pos, "%pM,",
- entry->addr);
+ hlist_for_each_entry_safe(entry, pos, n, &vis_if_list, list) {
+ hlist_del(&entry->list);
+ kfree(entry);
+ }
+ }
+}
- for (j = 0; j < packet->entries; j++)
- buff_pos += vis_data_read_entry(
- buff + buff_pos,
- &entries[j],
- entry->addr,
- entry->primary);
+int batadv_vis_seq_print_text(struct seq_file *seq, void *offset)
+{
+ struct batadv_hard_iface *primary_if;
+ struct hlist_head *head;
+ struct net_device *net_dev = (struct net_device *)seq->private;
+ struct batadv_priv *bat_priv = netdev_priv(net_dev);
+ struct batadv_hashtable *hash = bat_priv->vis_hash;
+ uint32_t i;
+ int ret = 0;
+ int vis_server = atomic_read(&bat_priv->vis_mode);
- /* add primary/secondary records */
- if (compare_eth(entry->addr, packet->vis_orig))
- buff_pos +=
- vis_data_read_prim_sec(buff + buff_pos,
- &vis_if_list);
+ primary_if = batadv_primary_if_get_selected(bat_priv);
+ if (!primary_if)
+ goto out;
- buff_pos += sprintf(buff + buff_pos, "\n");
- }
+ if (vis_server == BATADV_VIS_TYPE_CLIENT_UPDATE)
+ goto out;
- hlist_for_each_entry_safe(entry, pos, n, &vis_if_list,
- list) {
- hlist_del(&entry->list);
- kfree(entry);
- }
- }
- rcu_read_unlock();
+ spin_lock_bh(&bat_priv->vis_hash_lock);
+ for (i = 0; i < hash->size; i++) {
+ head = &hash->table[i];
+ batadv_vis_seq_print_text_bucket(seq, head);
}
-
spin_unlock_bh(&bat_priv->vis_hash_lock);
- seq_printf(seq, "%s", buff);
- kfree(buff);
-
out:
if (primary_if)
- hardif_free_ref(primary_if);
+ batadv_hardif_free_ref(primary_if);
return ret;
}
/* add the info packet to the send list, if it was not
- * already linked in. */
-static void send_list_add(struct bat_priv *bat_priv, struct vis_info *info)
+ * already linked in.
+ */
+static void batadv_send_list_add(struct batadv_priv *bat_priv,
+ struct batadv_vis_info *info)
{
if (list_empty(&info->send_list)) {
kref_get(&info->refcount);
@@ -337,20 +290,21 @@ static void send_list_add(struct bat_priv *bat_priv, struct vis_info *info)
}
/* delete the info packet from the send list, if it was
- * linked in. */
-static void send_list_del(struct vis_info *info)
+ * linked in.
+ */
+static void batadv_send_list_del(struct batadv_vis_info *info)
{
if (!list_empty(&info->send_list)) {
list_del_init(&info->send_list);
- kref_put(&info->refcount, free_info);
+ kref_put(&info->refcount, batadv_free_info);
}
}
/* tries to add one entry to the receive list. */
-static void recv_list_add(struct bat_priv *bat_priv,
- struct list_head *recv_list, const char *mac)
+static void batadv_recv_list_add(struct batadv_priv *bat_priv,
+ struct list_head *recv_list, const char *mac)
{
- struct recvlist_node *entry;
+ struct batadv_recvlist_node *entry;
entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
if (!entry)
@@ -363,14 +317,15 @@ static void recv_list_add(struct bat_priv *bat_priv,
}
/* returns 1 if this mac is in the recv_list */
-static int recv_list_is_in(struct bat_priv *bat_priv,
- const struct list_head *recv_list, const char *mac)
+static int batadv_recv_list_is_in(struct batadv_priv *bat_priv,
+ const struct list_head *recv_list,
+ const char *mac)
{
- const struct recvlist_node *entry;
+ const struct batadv_recvlist_node *entry;
spin_lock_bh(&bat_priv->vis_list_lock);
list_for_each_entry(entry, recv_list, list) {
- if (compare_eth(entry->mac, mac)) {
+ if (batadv_compare_eth(entry->mac, mac)) {
spin_unlock_bh(&bat_priv->vis_list_lock);
return 1;
}
@@ -381,17 +336,21 @@ static int recv_list_is_in(struct bat_priv *bat_priv,
/* try to add the packet to the vis_hash. return NULL if invalid (e.g. too old,
* broken.. ). vis hash must be locked outside. is_new is set when the packet
- * is newer than old entries in the hash. */
-static struct vis_info *add_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
- int vis_info_len, int *is_new,
- int make_broadcast)
+ * is newer than old entries in the hash.
+ */
+static struct batadv_vis_info *
+batadv_add_packet(struct batadv_priv *bat_priv,
+ struct batadv_vis_packet *vis_packet, int vis_info_len,
+ int *is_new, int make_broadcast)
{
- struct vis_info *info, *old_info;
- struct vis_packet *search_packet, *old_packet;
- struct vis_info search_elem;
- struct vis_packet *packet;
+ struct batadv_vis_info *info, *old_info;
+ struct batadv_vis_packet *search_packet, *old_packet;
+ struct batadv_vis_info search_elem;
+ struct batadv_vis_packet *packet;
+ struct sk_buff *tmp_skb;
int hash_added;
+ size_t len;
+ size_t max_entries;
*is_new = 0;
/* sanity check */
@@ -402,20 +361,23 @@ static struct vis_info *add_packet(struct bat_priv *bat_priv,
search_elem.skb_packet = dev_alloc_skb(sizeof(*search_packet));
if (!search_elem.skb_packet)
return NULL;
- search_packet = (struct vis_packet *)skb_put(search_elem.skb_packet,
- sizeof(*search_packet));
+ len = sizeof(*search_packet);
+ tmp_skb = search_elem.skb_packet;
+ search_packet = (struct batadv_vis_packet *)skb_put(tmp_skb, len);
memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN);
- old_info = vis_hash_find(bat_priv, &search_elem);
+ old_info = batadv_vis_hash_find(bat_priv, &search_elem);
kfree_skb(search_elem.skb_packet);
if (old_info) {
- old_packet = (struct vis_packet *)old_info->skb_packet->data;
- if (!seq_after(ntohl(vis_packet->seqno),
- ntohl(old_packet->seqno))) {
+ tmp_skb = old_info->skb_packet;
+ old_packet = (struct batadv_vis_packet *)tmp_skb->data;
+ if (!batadv_seq_after(ntohl(vis_packet->seqno),
+ ntohl(old_packet->seqno))) {
if (old_packet->seqno == vis_packet->seqno) {
- recv_list_add(bat_priv, &old_info->recv_list,
- vis_packet->sender_orig);
+ batadv_recv_list_add(bat_priv,
+ &old_info->recv_list,
+ vis_packet->sender_orig);
return old_info;
} else {
/* newer packet is already in hash. */
@@ -423,52 +385,53 @@ static struct vis_info *add_packet(struct bat_priv *bat_priv,
}
}
/* remove old entry */
- hash_remove(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
- old_info);
- send_list_del(old_info);
- kref_put(&old_info->refcount, free_info);
+ batadv_hash_remove(bat_priv->vis_hash, batadv_vis_info_cmp,
+ batadv_vis_info_choose, old_info);
+ batadv_send_list_del(old_info);
+ kref_put(&old_info->refcount, batadv_free_info);
}
info = kmalloc(sizeof(*info), GFP_ATOMIC);
if (!info)
return NULL;
- info->skb_packet = dev_alloc_skb(sizeof(*packet) + vis_info_len +
- ETH_HLEN);
+ len = sizeof(*packet) + vis_info_len;
+ info->skb_packet = dev_alloc_skb(len + ETH_HLEN);
if (!info->skb_packet) {
kfree(info);
return NULL;
}
skb_reserve(info->skb_packet, ETH_HLEN);
- packet = (struct vis_packet *)skb_put(info->skb_packet, sizeof(*packet)
- + vis_info_len);
+ packet = (struct batadv_vis_packet *)skb_put(info->skb_packet, len);
kref_init(&info->refcount);
INIT_LIST_HEAD(&info->send_list);
INIT_LIST_HEAD(&info->recv_list);
info->first_seen = jiffies;
info->bat_priv = bat_priv;
- memcpy(packet, vis_packet, sizeof(*packet) + vis_info_len);
+ memcpy(packet, vis_packet, len);
/* initialize and add new packet. */
*is_new = 1;
/* Make it a broadcast packet, if required */
if (make_broadcast)
- memcpy(packet->target_orig, broadcast_addr, ETH_ALEN);
+ memcpy(packet->target_orig, batadv_broadcast_addr, ETH_ALEN);
/* repair if entries is longer than packet. */
- if (packet->entries * sizeof(struct vis_info_entry) > vis_info_len)
- packet->entries = vis_info_len / sizeof(struct vis_info_entry);
+ max_entries = vis_info_len / sizeof(struct batadv_vis_info_entry);
+ if (packet->entries > max_entries)
+ packet->entries = max_entries;
- recv_list_add(bat_priv, &info->recv_list, packet->sender_orig);
+ batadv_recv_list_add(bat_priv, &info->recv_list, packet->sender_orig);
/* try to add it */
- hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
- info, &info->hash_entry);
+ hash_added = batadv_hash_add(bat_priv->vis_hash, batadv_vis_info_cmp,
+ batadv_vis_info_choose, info,
+ &info->hash_entry);
if (hash_added != 0) {
/* did not work (for some reason) */
- kref_put(&info->refcount, free_info);
+ kref_put(&info->refcount, batadv_free_info);
info = NULL;
}
@@ -476,37 +439,38 @@ static struct vis_info *add_packet(struct bat_priv *bat_priv,
}
/* handle the server sync packet, forward if needed. */
-void receive_server_sync_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
- int vis_info_len)
+void batadv_receive_server_sync_packet(struct batadv_priv *bat_priv,
+ struct batadv_vis_packet *vis_packet,
+ int vis_info_len)
{
- struct vis_info *info;
+ struct batadv_vis_info *info;
int is_new, make_broadcast;
int vis_server = atomic_read(&bat_priv->vis_mode);
- make_broadcast = (vis_server == VIS_TYPE_SERVER_SYNC);
+ make_broadcast = (vis_server == BATADV_VIS_TYPE_SERVER_SYNC);
spin_lock_bh(&bat_priv->vis_hash_lock);
- info = add_packet(bat_priv, vis_packet, vis_info_len,
- &is_new, make_broadcast);
+ info = batadv_add_packet(bat_priv, vis_packet, vis_info_len,
+ &is_new, make_broadcast);
if (!info)
goto end;
/* only if we are server ourselves and packet is newer than the one in
- * hash.*/
- if (vis_server == VIS_TYPE_SERVER_SYNC && is_new)
- send_list_add(bat_priv, info);
+ * hash.
+ */
+ if (vis_server == BATADV_VIS_TYPE_SERVER_SYNC && is_new)
+ batadv_send_list_add(bat_priv, info);
end:
spin_unlock_bh(&bat_priv->vis_hash_lock);
}
/* handle an incoming client update packet and schedule forward if needed. */
-void receive_client_update_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
- int vis_info_len)
+void batadv_receive_client_update_packet(struct batadv_priv *bat_priv,
+ struct batadv_vis_packet *vis_packet,
+ int vis_info_len)
{
- struct vis_info *info;
- struct vis_packet *packet;
+ struct batadv_vis_info *info;
+ struct batadv_vis_packet *packet;
int is_new;
int vis_server = atomic_read(&bat_priv->vis_mode);
int are_target = 0;
@@ -516,28 +480,28 @@ void receive_client_update_packet(struct bat_priv *bat_priv,
return;
/* Are we the target for this VIS packet? */
- if (vis_server == VIS_TYPE_SERVER_SYNC &&
- is_my_mac(vis_packet->target_orig))
+ if (vis_server == BATADV_VIS_TYPE_SERVER_SYNC &&
+ batadv_is_my_mac(vis_packet->target_orig))
are_target = 1;
spin_lock_bh(&bat_priv->vis_hash_lock);
- info = add_packet(bat_priv, vis_packet, vis_info_len,
- &is_new, are_target);
+ info = batadv_add_packet(bat_priv, vis_packet, vis_info_len,
+ &is_new, are_target);
if (!info)
goto end;
/* note that outdated packets will be dropped at this point. */
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
/* send only if we're the target server or ... */
if (are_target && is_new) {
- packet->vis_type = VIS_TYPE_SERVER_SYNC; /* upgrade! */
- send_list_add(bat_priv, info);
+ packet->vis_type = BATADV_VIS_TYPE_SERVER_SYNC; /* upgrade! */
+ batadv_send_list_add(bat_priv, info);
/* ... we're not the recipient (and thus need to forward). */
- } else if (!is_my_mac(packet->target_orig)) {
- send_list_add(bat_priv, info);
+ } else if (!batadv_is_my_mac(packet->target_orig)) {
+ batadv_send_list_add(bat_priv, info);
}
end:
@@ -547,37 +511,38 @@ end:
/* Walk the originators and find the VIS server with the best tq. Set the packet
* address to its address and return the best_tq.
*
- * Must be called with the originator hash locked */
-static int find_best_vis_server(struct bat_priv *bat_priv,
- struct vis_info *info)
+ * Must be called with the originator hash locked
+ */
+static int batadv_find_best_vis_server(struct batadv_priv *bat_priv,
+ struct batadv_vis_info *info)
{
- struct hashtable_t *hash = bat_priv->orig_hash;
- struct neigh_node *router;
+ struct batadv_hashtable *hash = bat_priv->orig_hash;
+ struct batadv_neigh_node *router;
struct hlist_node *node;
struct hlist_head *head;
- struct orig_node *orig_node;
- struct vis_packet *packet;
+ struct batadv_orig_node *orig_node;
+ struct batadv_vis_packet *packet;
int best_tq = -1;
uint32_t i;
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
rcu_read_lock();
hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
- router = orig_node_get_router(orig_node);
+ router = batadv_orig_node_get_router(orig_node);
if (!router)
continue;
- if ((orig_node->flags & VIS_SERVER) &&
+ if ((orig_node->flags & BATADV_VIS_SERVER) &&
(router->tq_avg > best_tq)) {
best_tq = router->tq_avg;
memcpy(packet->target_orig, orig_node->orig,
ETH_ALEN);
}
- neigh_node_free_ref(router);
+ batadv_neigh_node_free_ref(router);
}
rcu_read_unlock();
}
@@ -586,47 +551,52 @@ static int find_best_vis_server(struct bat_priv *bat_priv,
}
/* Return true if the vis packet is full. */
-static bool vis_packet_full(const struct vis_info *info)
+static bool batadv_vis_packet_full(const struct batadv_vis_info *info)
{
- const struct vis_packet *packet;
- packet = (struct vis_packet *)info->skb_packet->data;
+ const struct batadv_vis_packet *packet;
+ size_t num;
+
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
+ num = BATADV_MAX_VIS_PACKET_SIZE / sizeof(struct batadv_vis_info_entry);
- if (MAX_VIS_PACKET_SIZE / sizeof(struct vis_info_entry)
- < packet->entries + 1)
+ if (num < packet->entries + 1)
return true;
return false;
}
/* generates a packet of own vis data,
- * returns 0 on success, -1 if no packet could be generated */
-static int generate_vis_packet(struct bat_priv *bat_priv)
+ * returns 0 on success, -1 if no packet could be generated
+ */
+static int batadv_generate_vis_packet(struct batadv_priv *bat_priv)
{
- struct hashtable_t *hash = bat_priv->orig_hash;
+ struct batadv_hashtable *hash = bat_priv->orig_hash;
struct hlist_node *node;
struct hlist_head *head;
- struct orig_node *orig_node;
- struct neigh_node *router;
- struct vis_info *info = bat_priv->my_vis_info;
- struct vis_packet *packet = (struct vis_packet *)info->skb_packet->data;
- struct vis_info_entry *entry;
- struct tt_common_entry *tt_common_entry;
+ struct batadv_orig_node *orig_node;
+ struct batadv_neigh_node *router;
+ struct batadv_vis_info *info = bat_priv->my_vis_info;
+ struct batadv_vis_packet *packet;
+ struct batadv_vis_info_entry *entry;
+ struct batadv_tt_common_entry *tt_common_entry;
int best_tq = -1;
uint32_t i;
info->first_seen = jiffies;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
packet->vis_type = atomic_read(&bat_priv->vis_mode);
- memcpy(packet->target_orig, broadcast_addr, ETH_ALEN);
- packet->header.ttl = TTL;
+ memcpy(packet->target_orig, batadv_broadcast_addr, ETH_ALEN);
+ packet->header.ttl = BATADV_TTL;
packet->seqno = htonl(ntohl(packet->seqno) + 1);
packet->entries = 0;
+ packet->reserved = 0;
skb_trim(info->skb_packet, sizeof(*packet));
- if (packet->vis_type == VIS_TYPE_CLIENT_UPDATE) {
- best_tq = find_best_vis_server(bat_priv, info);
+ if (packet->vis_type == BATADV_VIS_TYPE_CLIENT_UPDATE) {
+ best_tq = batadv_find_best_vis_server(bat_priv, info);
if (best_tq < 0)
- return -1;
+ return best_tq;
}
for (i = 0; i < hash->size; i++) {
@@ -634,21 +604,21 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
rcu_read_lock();
hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
- router = orig_node_get_router(orig_node);
+ router = batadv_orig_node_get_router(orig_node);
if (!router)
continue;
- if (!compare_eth(router->addr, orig_node->orig))
+ if (!batadv_compare_eth(router->addr, orig_node->orig))
goto next;
- if (router->if_incoming->if_status != IF_ACTIVE)
+ if (router->if_incoming->if_status != BATADV_IF_ACTIVE)
goto next;
if (router->tq_avg < 1)
goto next;
/* fill one entry into buffer. */
- entry = (struct vis_info_entry *)
+ entry = (struct batadv_vis_info_entry *)
skb_put(info->skb_packet, sizeof(*entry));
memcpy(entry->src,
router->if_incoming->net_dev->dev_addr,
@@ -658,9 +628,9 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
packet->entries++;
next:
- neigh_node_free_ref(router);
+ batadv_neigh_node_free_ref(router);
- if (vis_packet_full(info))
+ if (batadv_vis_packet_full(info))
goto unlock;
}
rcu_read_unlock();
@@ -674,7 +644,7 @@ next:
rcu_read_lock();
hlist_for_each_entry_rcu(tt_common_entry, node, head,
hash_entry) {
- entry = (struct vis_info_entry *)
+ entry = (struct batadv_vis_info_entry *)
skb_put(info->skb_packet,
sizeof(*entry));
memset(entry->src, 0, ETH_ALEN);
@@ -682,7 +652,7 @@ next:
entry->quality = 0; /* 0 means TT */
packet->entries++;
- if (vis_packet_full(info))
+ if (batadv_vis_packet_full(info))
goto unlock;
}
rcu_read_unlock();
@@ -696,14 +666,15 @@ unlock:
}
/* free old vis packets. Must be called with this vis_hash_lock
- * held */
-static void purge_vis_packets(struct bat_priv *bat_priv)
+ * held
+ */
+static void batadv_purge_vis_packets(struct batadv_priv *bat_priv)
{
uint32_t i;
- struct hashtable_t *hash = bat_priv->vis_hash;
+ struct batadv_hashtable *hash = bat_priv->vis_hash;
struct hlist_node *node, *node_tmp;
struct hlist_head *head;
- struct vis_info *info;
+ struct batadv_vis_info *info;
for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
@@ -714,31 +685,32 @@ static void purge_vis_packets(struct bat_priv *bat_priv)
if (info == bat_priv->my_vis_info)
continue;
- if (has_timed_out(info->first_seen, VIS_TIMEOUT)) {
+ if (batadv_has_timed_out(info->first_seen,
+ BATADV_VIS_TIMEOUT)) {
hlist_del(node);
- send_list_del(info);
- kref_put(&info->refcount, free_info);
+ batadv_send_list_del(info);
+ kref_put(&info->refcount, batadv_free_info);
}
}
}
}
-static void broadcast_vis_packet(struct bat_priv *bat_priv,
- struct vis_info *info)
+static void batadv_broadcast_vis_packet(struct batadv_priv *bat_priv,
+ struct batadv_vis_info *info)
{
- struct neigh_node *router;
- struct hashtable_t *hash = bat_priv->orig_hash;
+ struct batadv_neigh_node *router;
+ struct batadv_hashtable *hash = bat_priv->orig_hash;
struct hlist_node *node;
struct hlist_head *head;
- struct orig_node *orig_node;
- struct vis_packet *packet;
+ struct batadv_orig_node *orig_node;
+ struct batadv_vis_packet *packet;
struct sk_buff *skb;
- struct hard_iface *hard_iface;
+ struct batadv_hard_iface *hard_iface;
uint8_t dstaddr[ETH_ALEN];
uint32_t i;
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
/* send to all routers in range. */
for (i = 0; i < hash->size; i++) {
@@ -747,18 +719,19 @@ static void broadcast_vis_packet(struct bat_priv *bat_priv,
rcu_read_lock();
hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
/* if it's a vis server and reachable, send it. */
- if (!(orig_node->flags & VIS_SERVER))
+ if (!(orig_node->flags & BATADV_VIS_SERVER))
continue;
- router = orig_node_get_router(orig_node);
+ router = batadv_orig_node_get_router(orig_node);
if (!router)
continue;
/* don't send it if we already received the packet from
- * this node. */
- if (recv_list_is_in(bat_priv, &info->recv_list,
- orig_node->orig)) {
- neigh_node_free_ref(router);
+ * this node.
+ */
+ if (batadv_recv_list_is_in(bat_priv, &info->recv_list,
+ orig_node->orig)) {
+ batadv_neigh_node_free_ref(router);
continue;
}
@@ -766,57 +739,59 @@ static void broadcast_vis_packet(struct bat_priv *bat_priv,
hard_iface = router->if_incoming;
memcpy(dstaddr, router->addr, ETH_ALEN);
- neigh_node_free_ref(router);
+ batadv_neigh_node_free_ref(router);
skb = skb_clone(info->skb_packet, GFP_ATOMIC);
if (skb)
- send_skb_packet(skb, hard_iface, dstaddr);
+ batadv_send_skb_packet(skb, hard_iface,
+ dstaddr);
}
rcu_read_unlock();
}
}
-static void unicast_vis_packet(struct bat_priv *bat_priv,
- struct vis_info *info)
+static void batadv_unicast_vis_packet(struct batadv_priv *bat_priv,
+ struct batadv_vis_info *info)
{
- struct orig_node *orig_node;
- struct neigh_node *router = NULL;
+ struct batadv_orig_node *orig_node;
+ struct batadv_neigh_node *router = NULL;
struct sk_buff *skb;
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
- orig_node = orig_hash_find(bat_priv, packet->target_orig);
+ orig_node = batadv_orig_hash_find(bat_priv, packet->target_orig);
if (!orig_node)
goto out;
- router = orig_node_get_router(orig_node);
+ router = batadv_orig_node_get_router(orig_node);
if (!router)
goto out;
skb = skb_clone(info->skb_packet, GFP_ATOMIC);
if (skb)
- send_skb_packet(skb, router->if_incoming, router->addr);
+ batadv_send_skb_packet(skb, router->if_incoming, router->addr);
out:
if (router)
- neigh_node_free_ref(router);
+ batadv_neigh_node_free_ref(router);
if (orig_node)
- orig_node_free_ref(orig_node);
+ batadv_orig_node_free_ref(orig_node);
}
-/* only send one vis packet. called from send_vis_packets() */
-static void send_vis_packet(struct bat_priv *bat_priv, struct vis_info *info)
+/* only send one vis packet. called from batadv_send_vis_packets() */
+static void batadv_send_vis_packet(struct batadv_priv *bat_priv,
+ struct batadv_vis_info *info)
{
- struct hard_iface *primary_if;
- struct vis_packet *packet;
+ struct batadv_hard_iface *primary_if;
+ struct batadv_vis_packet *packet;
- primary_if = primary_if_get_selected(bat_priv);
+ primary_if = batadv_primary_if_get_selected(bat_priv);
if (!primary_if)
goto out;
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
if (packet->header.ttl < 2) {
pr_debug("Error - can't send vis packet: ttl exceeded\n");
goto out;
@@ -826,31 +801,31 @@ static void send_vis_packet(struct bat_priv *bat_priv, struct vis_info *info)
packet->header.ttl--;
if (is_broadcast_ether_addr(packet->target_orig))
- broadcast_vis_packet(bat_priv, info);
+ batadv_broadcast_vis_packet(bat_priv, info);
else
- unicast_vis_packet(bat_priv, info);
+ batadv_unicast_vis_packet(bat_priv, info);
packet->header.ttl++; /* restore TTL */
out:
if (primary_if)
- hardif_free_ref(primary_if);
+ batadv_hardif_free_ref(primary_if);
}
/* called from timer; send (and maybe generate) vis packet. */
-static void send_vis_packets(struct work_struct *work)
+static void batadv_send_vis_packets(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, vis_work);
- struct vis_info *info;
+ struct batadv_priv *bat_priv;
+ struct batadv_vis_info *info;
+ bat_priv = container_of(delayed_work, struct batadv_priv, vis_work);
spin_lock_bh(&bat_priv->vis_hash_lock);
- purge_vis_packets(bat_priv);
+ batadv_purge_vis_packets(bat_priv);
- if (generate_vis_packet(bat_priv) == 0) {
+ if (batadv_generate_vis_packet(bat_priv) == 0) {
/* schedule if generation was successful */
- send_list_add(bat_priv, bat_priv->my_vis_info);
+ batadv_send_list_add(bat_priv, bat_priv->my_vis_info);
}
while (!list_empty(&bat_priv->vis_send_list)) {
@@ -860,98 +835,103 @@ static void send_vis_packets(struct work_struct *work)
kref_get(&info->refcount);
spin_unlock_bh(&bat_priv->vis_hash_lock);
- send_vis_packet(bat_priv, info);
+ batadv_send_vis_packet(bat_priv, info);
spin_lock_bh(&bat_priv->vis_hash_lock);
- send_list_del(info);
- kref_put(&info->refcount, free_info);
+ batadv_send_list_del(info);
+ kref_put(&info->refcount, batadv_free_info);
}
spin_unlock_bh(&bat_priv->vis_hash_lock);
- start_vis_timer(bat_priv);
+ batadv_start_vis_timer(bat_priv);
}
/* init the vis server. this may only be called when if_list is already
- * initialized (e.g. bat0 is initialized, interfaces have been added) */
-int vis_init(struct bat_priv *bat_priv)
+ * initialized (e.g. bat0 is initialized, interfaces have been added)
+ */
+int batadv_vis_init(struct batadv_priv *bat_priv)
{
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
int hash_added;
+ unsigned int len;
+ unsigned long first_seen;
+ struct sk_buff *tmp_skb;
if (bat_priv->vis_hash)
- return 1;
+ return 0;
spin_lock_bh(&bat_priv->vis_hash_lock);
- bat_priv->vis_hash = hash_new(256);
+ bat_priv->vis_hash = batadv_hash_new(256);
if (!bat_priv->vis_hash) {
pr_err("Can't initialize vis_hash\n");
goto err;
}
- bat_priv->my_vis_info = kmalloc(MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
+ bat_priv->my_vis_info = kmalloc(BATADV_MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
if (!bat_priv->my_vis_info)
goto err;
- bat_priv->my_vis_info->skb_packet = dev_alloc_skb(sizeof(*packet) +
- MAX_VIS_PACKET_SIZE +
- ETH_HLEN);
+ len = sizeof(*packet) + BATADV_MAX_VIS_PACKET_SIZE + ETH_HLEN;
+ bat_priv->my_vis_info->skb_packet = dev_alloc_skb(len);
if (!bat_priv->my_vis_info->skb_packet)
goto free_info;
skb_reserve(bat_priv->my_vis_info->skb_packet, ETH_HLEN);
- packet = (struct vis_packet *)skb_put(bat_priv->my_vis_info->skb_packet,
- sizeof(*packet));
+ tmp_skb = bat_priv->my_vis_info->skb_packet;
+ packet = (struct batadv_vis_packet *)skb_put(tmp_skb, sizeof(*packet));
/* prefill the vis info */
- bat_priv->my_vis_info->first_seen = jiffies -
- msecs_to_jiffies(VIS_INTERVAL);
+ first_seen = jiffies - msecs_to_jiffies(BATADV_VIS_INTERVAL);
+ bat_priv->my_vis_info->first_seen = first_seen;
INIT_LIST_HEAD(&bat_priv->my_vis_info->recv_list);
INIT_LIST_HEAD(&bat_priv->my_vis_info->send_list);
kref_init(&bat_priv->my_vis_info->refcount);
bat_priv->my_vis_info->bat_priv = bat_priv;
- packet->header.version = COMPAT_VERSION;
- packet->header.packet_type = BAT_VIS;
- packet->header.ttl = TTL;
+ packet->header.version = BATADV_COMPAT_VERSION;
+ packet->header.packet_type = BATADV_VIS;
+ packet->header.ttl = BATADV_TTL;
packet->seqno = 0;
+ packet->reserved = 0;
packet->entries = 0;
INIT_LIST_HEAD(&bat_priv->vis_send_list);
- hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
- bat_priv->my_vis_info,
- &bat_priv->my_vis_info->hash_entry);
+ hash_added = batadv_hash_add(bat_priv->vis_hash, batadv_vis_info_cmp,
+ batadv_vis_info_choose,
+ bat_priv->my_vis_info,
+ &bat_priv->my_vis_info->hash_entry);
if (hash_added != 0) {
pr_err("Can't add own vis packet into hash\n");
/* not in hash, need to remove it manually. */
- kref_put(&bat_priv->my_vis_info->refcount, free_info);
+ kref_put(&bat_priv->my_vis_info->refcount, batadv_free_info);
goto err;
}
spin_unlock_bh(&bat_priv->vis_hash_lock);
- start_vis_timer(bat_priv);
- return 1;
+ batadv_start_vis_timer(bat_priv);
+ return 0;
free_info:
kfree(bat_priv->my_vis_info);
bat_priv->my_vis_info = NULL;
err:
spin_unlock_bh(&bat_priv->vis_hash_lock);
- vis_quit(bat_priv);
- return 0;
+ batadv_vis_quit(bat_priv);
+ return -ENOMEM;
}
/* Decrease the reference count on a hash item info */
-static void free_info_ref(struct hlist_node *node, void *arg)
+static void batadv_free_info_ref(struct hlist_node *node, void *arg)
{
- struct vis_info *info;
+ struct batadv_vis_info *info;
- info = container_of(node, struct vis_info, hash_entry);
- send_list_del(info);
- kref_put(&info->refcount, free_info);
+ info = container_of(node, struct batadv_vis_info, hash_entry);
+ batadv_send_list_del(info);
+ kref_put(&info->refcount, batadv_free_info);
}
/* shutdown vis-server */
-void vis_quit(struct bat_priv *bat_priv)
+void batadv_vis_quit(struct batadv_priv *bat_priv)
{
if (!bat_priv->vis_hash)
return;
@@ -960,16 +940,16 @@ void vis_quit(struct bat_priv *bat_priv)
spin_lock_bh(&bat_priv->vis_hash_lock);
/* properly remove, kill timers ... */
- hash_delete(bat_priv->vis_hash, free_info_ref, NULL);
+ batadv_hash_delete(bat_priv->vis_hash, batadv_free_info_ref, NULL);
bat_priv->vis_hash = NULL;
bat_priv->my_vis_info = NULL;
spin_unlock_bh(&bat_priv->vis_hash_lock);
}
/* schedule packets for (re)transmission */
-static void start_vis_timer(struct bat_priv *bat_priv)
+static void batadv_start_vis_timer(struct batadv_priv *bat_priv)
{
- INIT_DELAYED_WORK(&bat_priv->vis_work, send_vis_packets);
- queue_delayed_work(bat_event_workqueue, &bat_priv->vis_work,
- msecs_to_jiffies(VIS_INTERVAL));
+ INIT_DELAYED_WORK(&bat_priv->vis_work, batadv_send_vis_packets);
+ queue_delayed_work(batadv_event_workqueue, &bat_priv->vis_work,
+ msecs_to_jiffies(BATADV_VIS_INTERVAL));
}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 02:29:36 +0000