#include "hard-interface.h"
#include "hash.h"
+#define MAX_VIS_PACKET_SIZE 1000
+
/* Returns the smallest signed integer in two's complement with the sizeof x */
#define smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u)))
/* Checks if a sequence number x is a predecessor/successor of y.
- they handle overflows/underflows and can correctly check for a
- predecessor/successor unless the variable sequence number has grown by
- more then 2**(bitwidth(x)-1)-1.
- This means that for a uint8_t with the maximum value 255, it would think:
- * when adding nothing - it is neither a predecessor nor a successor
- * before adding more than 127 to the starting value - it is a predecessor,
- * when adding 128 - it is neither a predecessor nor a successor,
- * after adding more than 127 to the starting value - it is a successor */
+ * they handle overflows/underflows and can correctly check for a
+ * predecessor/successor unless the variable sequence number has grown by
+ * more then 2**(bitwidth(x)-1)-1.
+ * This means that for a uint8_t with the maximum value 255, it would think:
+ * - when adding nothing - it is neither a predecessor nor a successor
+ * - before adding more than 127 to the starting value - it is a predecessor,
+ * - when adding 128 - it is neither a predecessor nor a successor,
+ * - after adding more than 127 to the starting value - it is a successor */
#define seq_before(x, y) ({typeof(x) _dummy = (x - y); \
_dummy > smallest_signed_int(_dummy); })
#define seq_after(x, y) seq_before(y, x)
-static struct hashtable_t *vis_hash;
-static DEFINE_SPINLOCK(vis_hash_lock);
-static DEFINE_SPINLOCK(recv_list_lock);
-static struct vis_info *my_vis_info;
-static struct list_head send_list; /* always locked with vis_hash_lock */
-
-static void start_vis_timer(void);
+static void start_vis_timer(struct bat_priv *bat_priv);
/* free the info */
static void 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;
unsigned long flags;
list_del_init(&info->send_list);
- spin_lock_irqsave(&recv_list_lock, flags);
+ spin_lock_irqsave(&bat_priv->vis_list_lock, flags);
list_for_each_entry_safe(entry, tmp, &info->recv_list, list) {
list_del(&entry->list);
kfree(entry);
}
- spin_unlock_irqrestore(&recv_list_lock, flags);
- kfree(info);
+
+ spin_unlock_irqrestore(&bat_priv->vis_list_lock, flags);
+ kfree_skb(info->skb_packet);
}
/* Compare two vis packets, used by the hashing algorithm */
static int vis_info_cmp(void *data1, void *data2)
{
struct vis_info *d1, *d2;
+ struct vis_packet *p1, *p2;
d1 = data1;
d2 = data2;
- return compare_orig(d1->packet.vis_orig, d2->packet.vis_orig);
+ p1 = (struct vis_packet *)d1->skb_packet->data;
+ p2 = (struct vis_packet *)d2->skb_packet->data;
+ return compare_orig(p1->vis_orig, p2->vis_orig);
}
/* hash function to choose an entry in a hash table of given size */
static int vis_info_choose(void *data, int size)
{
struct vis_info *vis_info = data;
+ struct vis_packet *packet;
unsigned char *key;
uint32_t hash = 0;
size_t i;
- key = vis_info->packet.vis_orig;
+ packet = (struct vis_packet *)vis_info->skb_packet->data;
+ key = packet->vis_orig;
for (i = 0; i < ETH_ALEN; i++) {
hash += key[i];
hash += (hash << 10);
{
struct if_list_entry *entry;
struct hlist_node *pos;
- char tmp_addr_str[ETH_STR_LEN];
size_t len = 0;
hlist_for_each_entry(entry, pos, if_list, list) {
if (entry->primary)
len += sprintf(buff + len, "PRIMARY, ");
else {
- addr_to_string(tmp_addr_str, entry->addr);
- len += sprintf(buff + len, "SEC %s, ", tmp_addr_str);
+ len += sprintf(buff + len, "SEC %pM, ", entry->addr);
}
}
static ssize_t vis_data_read_entry(char *buff, struct vis_info_entry *entry,
uint8_t *src, bool primary)
{
- char to[18];
-
/* maximal length: max(4+17+2, 3+17+1+3+2) == 26 */
- addr_to_string(to, entry->dest);
if (primary && entry->quality == 0)
- return sprintf(buff, "HNA %s, ", to);
+ return sprintf(buff, "HNA %pM, ", entry->dest);
else if (compare_orig(entry->src, src))
- return sprintf(buff, "TQ %s %d, ", to, entry->quality);
+ return sprintf(buff, "TQ %pM %d, ", entry->dest,
+ entry->quality);
return 0;
}
HASHIT(hashit);
HASHIT(hashit_count);
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 if_list_entry *entry;
struct hlist_node *pos, *n;
int i;
- char tmp_addr_str[ETH_STR_LEN];
unsigned long flags;
int vis_server = atomic_read(&bat_priv->vis_mode);
size_t buff_pos, buf_size;
buf_size = 1;
/* Estimate length */
- spin_lock_irqsave(&vis_hash_lock, flags);
- while (hash_iterate(vis_hash, &hashit_count)) {
+ spin_lock_irqsave(&bat_priv->vis_hash_lock, flags);
+ while (hash_iterate(bat_priv->vis_hash, &hashit_count)) {
info = hashit_count.bucket->data;
+ packet = (struct vis_packet *)info->skb_packet->data;
entries = (struct vis_info_entry *)
- ((char *)info + sizeof(struct vis_info));
+ ((char *)packet + sizeof(struct vis_packet));
- for (i = 0; i < info->packet.entries; i++) {
+ for (i = 0; i < packet->entries; i++) {
if (entries[i].quality == 0)
continue;
vis_data_insert_interface(entries[i].src, &vis_if_list,
- compare_orig(entries[i].src,
- info->packet.vis_orig));
+ compare_orig(entries[i].src, packet->vis_orig));
}
hlist_for_each_entry(entry, pos, &vis_if_list, list) {
- buf_size += 18 + 26 * info->packet.entries;
+ buf_size += 18 + 26 * packet->entries;
/* add primary/secondary records */
- if (compare_orig(entry->addr, info->packet.vis_orig))
+ if (compare_orig(entry->addr, packet->vis_orig))
buf_size +=
vis_data_count_prim_sec(&vis_if_list);
buff = kmalloc(buf_size, GFP_ATOMIC);
if (!buff) {
- spin_unlock_irqrestore(&vis_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
return -ENOMEM;
}
buff[0] = '\0';
buff_pos = 0;
- while (hash_iterate(vis_hash, &hashit)) {
+ while (hash_iterate(bat_priv->vis_hash, &hashit)) {
info = hashit.bucket->data;
+ packet = (struct vis_packet *)info->skb_packet->data;
entries = (struct vis_info_entry *)
- ((char *)info + sizeof(struct vis_info));
+ ((char *)packet + sizeof(struct vis_packet));
- for (i = 0; i < info->packet.entries; i++) {
+ for (i = 0; i < packet->entries; i++) {
if (entries[i].quality == 0)
continue;
vis_data_insert_interface(entries[i].src, &vis_if_list,
- compare_orig(entries[i].src,
- info->packet.vis_orig));
+ compare_orig(entries[i].src, packet->vis_orig));
}
hlist_for_each_entry(entry, pos, &vis_if_list, list) {
- addr_to_string(tmp_addr_str, entry->addr);
- buff_pos += sprintf(buff + buff_pos, "%s,",
- tmp_addr_str);
+ buff_pos += sprintf(buff + buff_pos, "%pM,",
+ entry->addr);
- for (i = 0; i < info->packet.entries; i++)
+ for (i = 0; i < packet->entries; i++)
buff_pos += vis_data_read_entry(buff + buff_pos,
&entries[i],
entry->addr,
entry->primary);
/* add primary/secondary records */
- if (compare_orig(entry->addr, info->packet.vis_orig))
+ if (compare_orig(entry->addr, packet->vis_orig))
buff_pos +=
vis_data_read_prim_sec(buff + buff_pos,
&vis_if_list);
}
}
- spin_unlock_irqrestore(&vis_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
seq_printf(seq, "%s", buff);
kfree(buff);
/* add the info packet to the send list, if it was not
* already linked in. */
-static void send_list_add(struct vis_info *info)
+static void send_list_add(struct bat_priv *bat_priv, struct vis_info *info)
{
if (list_empty(&info->send_list)) {
kref_get(&info->refcount);
- list_add_tail(&info->send_list, &send_list);
+ list_add_tail(&info->send_list, &bat_priv->vis_send_list);
}
}
}
/* tries to add one entry to the receive list. */
-static void recv_list_add(struct list_head *recv_list, char *mac)
+static void recv_list_add(struct bat_priv *bat_priv,
+ struct list_head *recv_list, char *mac)
{
struct recvlist_node *entry;
unsigned long flags;
return;
memcpy(entry->mac, mac, ETH_ALEN);
- spin_lock_irqsave(&recv_list_lock, flags);
+ spin_lock_irqsave(&bat_priv->vis_list_lock, flags);
list_add_tail(&entry->list, recv_list);
- spin_unlock_irqrestore(&recv_list_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->vis_list_lock, flags);
}
/* returns 1 if this mac is in the recv_list */
-static int recv_list_is_in(struct list_head *recv_list, char *mac)
+static int recv_list_is_in(struct bat_priv *bat_priv,
+ struct list_head *recv_list, char *mac)
{
struct recvlist_node *entry;
unsigned long flags;
- spin_lock_irqsave(&recv_list_lock, flags);
+ spin_lock_irqsave(&bat_priv->vis_list_lock, flags);
list_for_each_entry(entry, recv_list, list) {
if (memcmp(entry->mac, mac, ETH_ALEN) == 0) {
- spin_unlock_irqrestore(&recv_list_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->vis_list_lock,
+ flags);
return 1;
}
}
- spin_unlock_irqrestore(&recv_list_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->vis_list_lock, flags);
return 0;
}
/* 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 vis_packet *vis_packet,
+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)
{
struct vis_info *info, *old_info;
+ struct vis_packet *search_packet, *old_packet;
struct vis_info search_elem;
+ struct vis_packet *packet;
*is_new = 0;
/* sanity check */
- if (vis_hash == NULL)
+ if (!bat_priv->vis_hash)
return NULL;
/* see if the packet is already in vis_hash */
- memcpy(search_elem.packet.vis_orig, vis_packet->vis_orig, ETH_ALEN);
- old_info = hash_find(vis_hash, &search_elem);
+ search_elem.skb_packet = dev_alloc_skb(sizeof(struct vis_packet));
+ if (!search_elem.skb_packet)
+ return NULL;
+ search_packet = (struct vis_packet *)skb_put(search_elem.skb_packet,
+ sizeof(struct vis_packet));
+
+ memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN);
+ old_info = hash_find(bat_priv->vis_hash, &search_elem);
+ kfree_skb(search_elem.skb_packet);
if (old_info != NULL) {
+ old_packet = (struct vis_packet *)old_info->skb_packet->data;
if (!seq_after(ntohl(vis_packet->seqno),
- ntohl(old_info->packet.seqno))) {
- if (old_info->packet.seqno == vis_packet->seqno) {
- recv_list_add(&old_info->recv_list,
+ ntohl(old_packet->seqno))) {
+ if (old_packet->seqno == vis_packet->seqno) {
+ recv_list_add(bat_priv, &old_info->recv_list,
vis_packet->sender_orig);
return old_info;
} else {
}
}
/* remove old entry */
- hash_remove(vis_hash, old_info);
+ hash_remove(bat_priv->vis_hash, old_info);
send_list_del(old_info);
kref_put(&old_info->refcount, free_info);
}
- info = kmalloc(sizeof(struct vis_info) + vis_info_len, GFP_ATOMIC);
- if (info == NULL)
+ info = kmalloc(sizeof(struct vis_info), GFP_ATOMIC);
+ if (!info)
return NULL;
+ info->skb_packet = dev_alloc_skb(sizeof(struct vis_packet) +
+ vis_info_len + sizeof(struct ethhdr));
+ if (!info->skb_packet) {
+ kfree(info);
+ return NULL;
+ }
+ skb_reserve(info->skb_packet, sizeof(struct ethhdr));
+ packet = (struct vis_packet *)skb_put(info->skb_packet,
+ sizeof(struct vis_packet) +
+ vis_info_len);
+
kref_init(&info->refcount);
INIT_LIST_HEAD(&info->send_list);
INIT_LIST_HEAD(&info->recv_list);
info->first_seen = jiffies;
- memcpy(&info->packet, vis_packet,
- sizeof(struct vis_packet) + vis_info_len);
+ info->bat_priv = bat_priv;
+ memcpy(packet, vis_packet, sizeof(struct vis_packet) + vis_info_len);
/* initialize and add new packet. */
*is_new = 1;
/* Make it a broadcast packet, if required */
if (make_broadcast)
- memcpy(info->packet.target_orig, broadcast_addr, ETH_ALEN);
+ memcpy(packet->target_orig, broadcast_addr, ETH_ALEN);
/* repair if entries is longer than packet. */
- if (info->packet.entries * sizeof(struct vis_info_entry) > vis_info_len)
- info->packet.entries = vis_info_len /
- sizeof(struct vis_info_entry);
+ if (packet->entries * sizeof(struct vis_info_entry) > vis_info_len)
+ packet->entries = vis_info_len / sizeof(struct vis_info_entry);
- recv_list_add(&info->recv_list, info->packet.sender_orig);
+ recv_list_add(bat_priv, &info->recv_list, packet->sender_orig);
/* try to add it */
- if (hash_add(vis_hash, info) < 0) {
+ if (hash_add(bat_priv->vis_hash, info) < 0) {
/* did not work (for some reason) */
kref_put(&old_info->refcount, free_info);
info = NULL;
make_broadcast = (vis_server == VIS_TYPE_SERVER_SYNC);
- spin_lock_irqsave(&vis_hash_lock, flags);
- info = add_packet(vis_packet, vis_info_len, &is_new, make_broadcast);
- if (info == NULL)
+ spin_lock_irqsave(&bat_priv->vis_hash_lock, flags);
+ info = 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(info);
+ send_list_add(bat_priv, info);
end:
- spin_unlock_irqrestore(&vis_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
}
/* handle an incoming client update packet and schedule forward if needed. */
int vis_info_len)
{
struct vis_info *info;
+ struct vis_packet *packet;
int is_new;
unsigned long flags;
int vis_server = atomic_read(&bat_priv->vis_mode);
is_my_mac(vis_packet->target_orig))
are_target = 1;
- spin_lock_irqsave(&vis_hash_lock, flags);
- info = add_packet(vis_packet, vis_info_len, &is_new, are_target);
- if (info == NULL)
+ spin_lock_irqsave(&bat_priv->vis_hash_lock, flags);
+ info = 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;
/* send only if we're the target server or ... */
if (are_target && is_new) {
- info->packet.vis_type = VIS_TYPE_SERVER_SYNC; /* upgrade! */
- send_list_add(info);
+ packet->vis_type = VIS_TYPE_SERVER_SYNC; /* upgrade! */
+ send_list_add(bat_priv, info);
/* ... we're not the recipient (and thus need to forward). */
- } else if (!is_my_mac(info->packet.target_orig)) {
- send_list_add(info);
+ } else if (!is_my_mac(packet->target_orig)) {
+ send_list_add(bat_priv, info);
}
+
end:
- spin_unlock_irqrestore(&vis_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
}
/* 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 vis_info *info)
+static int find_best_vis_server(struct bat_priv *bat_priv,
+ struct vis_info *info)
{
HASHIT(hashit);
struct orig_node *orig_node;
+ struct vis_packet *packet;
int best_tq = -1;
- while (hash_iterate(orig_hash, &hashit)) {
+ packet = (struct vis_packet *)info->skb_packet->data;
+
+ while (hash_iterate(bat_priv->orig_hash, &hashit)) {
orig_node = hashit.bucket->data;
- if ((orig_node != NULL) &&
- (orig_node->router != NULL) &&
+ if ((orig_node) && (orig_node->router) &&
(orig_node->flags & VIS_SERVER) &&
(orig_node->router->tq_avg > best_tq)) {
best_tq = orig_node->router->tq_avg;
- memcpy(info->packet.target_orig, orig_node->orig,
- ETH_ALEN);
+ memcpy(packet->target_orig, orig_node->orig, ETH_ALEN);
}
}
return best_tq;
/* Return true if the vis packet is full. */
static bool vis_packet_full(struct vis_info *info)
{
- if (info->packet.entries + 1 >
- (1000 - sizeof(struct vis_info)) / sizeof(struct vis_info_entry))
+ struct vis_packet *packet;
+ packet = (struct vis_packet *)info->skb_packet->data;
+
+ if (MAX_VIS_PACKET_SIZE / sizeof(struct vis_info_entry)
+ < packet->entries + 1)
return true;
return false;
}
HASHIT(hashit_local);
HASHIT(hashit_global);
struct orig_node *orig_node;
- struct vis_info *info = (struct vis_info *)my_vis_info;
- struct vis_info_entry *entry, *entry_array;
+ struct vis_info *info = (struct vis_info *)bat_priv->my_vis_info;
+ struct vis_packet *packet = (struct vis_packet *)info->skb_packet->data;
+ struct vis_info_entry *entry;
struct hna_local_entry *hna_local_entry;
int best_tq = -1;
unsigned long flags;
info->first_seen = jiffies;
- info->packet.vis_type = atomic_read(&bat_priv->vis_mode);
+ packet->vis_type = atomic_read(&bat_priv->vis_mode);
- spin_lock_irqsave(&orig_hash_lock, flags);
- memcpy(info->packet.target_orig, broadcast_addr, ETH_ALEN);
- info->packet.ttl = TTL;
- info->packet.seqno = htonl(ntohl(info->packet.seqno) + 1);
- info->packet.entries = 0;
+ spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
+ memcpy(packet->target_orig, broadcast_addr, ETH_ALEN);
+ packet->ttl = TTL;
+ packet->seqno = htonl(ntohl(packet->seqno) + 1);
+ packet->entries = 0;
+ skb_trim(info->skb_packet, sizeof(struct vis_packet));
+
+ if (packet->vis_type == VIS_TYPE_CLIENT_UPDATE) {
+ best_tq = find_best_vis_server(bat_priv, info);
- if (info->packet.vis_type == VIS_TYPE_CLIENT_UPDATE) {
- best_tq = find_best_vis_server(info);
if (best_tq < 0) {
- spin_unlock_irqrestore(&orig_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->orig_hash_lock,
+ flags);
return -1;
}
}
- entry_array = (struct vis_info_entry *)
- ((char *)info + sizeof(struct vis_info));
-
- while (hash_iterate(orig_hash, &hashit_global)) {
+ while (hash_iterate(bat_priv->orig_hash, &hashit_global)) {
orig_node = hashit_global.bucket->data;
- if (orig_node->router != NULL
- && compare_orig(orig_node->router->addr,
- orig_node->orig)
- && (orig_node->router->if_incoming->if_status ==
- IF_ACTIVE)
- && orig_node->router->tq_avg > 0) {
-
- /* fill one entry into buffer. */
- entry = &entry_array[info->packet.entries];
- memcpy(entry->src,
- orig_node->router->if_incoming->net_dev->dev_addr,
- ETH_ALEN);
- memcpy(entry->dest, orig_node->orig, ETH_ALEN);
- entry->quality = orig_node->router->tq_avg;
- info->packet.entries++;
-
- if (vis_packet_full(info)) {
- spin_unlock_irqrestore(&orig_hash_lock, flags);
- return 0;
- }
+
+ if (!orig_node->router)
+ continue;
+
+ if (!compare_orig(orig_node->router->addr, orig_node->orig))
+ continue;
+
+ if (orig_node->router->if_incoming->if_status != IF_ACTIVE)
+ continue;
+
+ if (orig_node->router->tq_avg < 1)
+ continue;
+
+ /* fill one entry into buffer. */
+ entry = (struct vis_info_entry *)
+ skb_put(info->skb_packet, sizeof(*entry));
+ memcpy(entry->src,
+ orig_node->router->if_incoming->net_dev->dev_addr,
+ ETH_ALEN);
+ memcpy(entry->dest, orig_node->orig, ETH_ALEN);
+ entry->quality = orig_node->router->tq_avg;
+ packet->entries++;
+
+ if (vis_packet_full(info)) {
+ spin_unlock_irqrestore(
+ &bat_priv->orig_hash_lock, flags);
+ return 0;
}
}
- spin_unlock_irqrestore(&orig_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
- spin_lock_irqsave(&hna_local_hash_lock, flags);
- while (hash_iterate(hna_local_hash, &hashit_local)) {
+ spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
+ while (hash_iterate(bat_priv->hna_local_hash, &hashit_local)) {
hna_local_entry = hashit_local.bucket->data;
- entry = &entry_array[info->packet.entries];
+ entry = (struct vis_info_entry *)skb_put(info->skb_packet,
+ sizeof(*entry));
memset(entry->src, 0, ETH_ALEN);
memcpy(entry->dest, hna_local_entry->addr, ETH_ALEN);
entry->quality = 0; /* 0 means HNA */
- info->packet.entries++;
+ packet->entries++;
if (vis_packet_full(info)) {
- spin_unlock_irqrestore(&hna_local_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->hna_lhash_lock,
+ flags);
return 0;
}
}
- spin_unlock_irqrestore(&hna_local_hash_lock, flags);
+
+ spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
return 0;
}
/* free old vis packets. Must be called with this vis_hash_lock
* held */
-static void purge_vis_packets(void)
+static void purge_vis_packets(struct bat_priv *bat_priv)
{
HASHIT(hashit);
struct vis_info *info;
- while (hash_iterate(vis_hash, &hashit)) {
+ while (hash_iterate(bat_priv->vis_hash, &hashit)) {
info = hashit.bucket->data;
- if (info == my_vis_info) /* never purge own data. */
+
+ /* never purge own data. */
+ if (info == bat_priv->my_vis_info)
continue;
+
if (time_after(jiffies,
info->first_seen + VIS_TIMEOUT * HZ)) {
- hash_remove_bucket(vis_hash, &hashit);
+ hash_remove_bucket(bat_priv->vis_hash, &hashit);
send_list_del(info);
kref_put(&info->refcount, free_info);
}
}
}
-static void broadcast_vis_packet(struct vis_info *info, int packet_length)
+static void broadcast_vis_packet(struct bat_priv *bat_priv,
+ struct vis_info *info)
{
HASHIT(hashit);
struct orig_node *orig_node;
+ struct vis_packet *packet;
+ struct sk_buff *skb;
unsigned long flags;
struct batman_if *batman_if;
uint8_t dstaddr[ETH_ALEN];
- spin_lock_irqsave(&orig_hash_lock, flags);
+
+ spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
+ packet = (struct vis_packet *)info->skb_packet->data;
/* send to all routers in range. */
- while (hash_iterate(orig_hash, &hashit)) {
+ while (hash_iterate(bat_priv->orig_hash, &hashit)) {
orig_node = hashit.bucket->data;
/* if it's a vis server and reachable, send it. */
continue;
/* don't send it if we already received the packet from
* this node. */
- if (recv_list_is_in(&info->recv_list, orig_node->orig))
+ if (recv_list_is_in(bat_priv, &info->recv_list,
+ orig_node->orig))
continue;
- memcpy(info->packet.target_orig, orig_node->orig, ETH_ALEN);
+ memcpy(packet->target_orig, orig_node->orig, ETH_ALEN);
batman_if = orig_node->router->if_incoming;
memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
- spin_unlock_irqrestore(&orig_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
- send_raw_packet((unsigned char *)&info->packet,
- packet_length, batman_if, dstaddr);
+ skb = skb_clone(info->skb_packet, GFP_ATOMIC);
+ if (skb)
+ send_skb_packet(skb, batman_if, dstaddr);
- spin_lock_irqsave(&orig_hash_lock, flags);
+ spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
}
- spin_unlock_irqrestore(&orig_hash_lock, flags);
- memcpy(info->packet.target_orig, broadcast_addr, ETH_ALEN);
+
+ spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
}
-static void unicast_vis_packet(struct vis_info *info, int packet_length)
+static void unicast_vis_packet(struct bat_priv *bat_priv,
+ struct vis_info *info)
{
struct orig_node *orig_node;
+ struct sk_buff *skb;
+ struct vis_packet *packet;
unsigned long flags;
struct batman_if *batman_if;
uint8_t dstaddr[ETH_ALEN];
- spin_lock_irqsave(&orig_hash_lock, flags);
- orig_node = ((struct orig_node *)
- hash_find(orig_hash, info->packet.target_orig));
+ spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
+ packet = (struct vis_packet *)info->skb_packet->data;
+ orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
+ packet->target_orig));
if ((!orig_node) || (!orig_node->router))
goto out;
* copy the required data before sending */
batman_if = orig_node->router->if_incoming;
memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
- spin_unlock_irqrestore(&orig_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
+
+ skb = skb_clone(info->skb_packet, GFP_ATOMIC);
+ if (skb)
+ send_skb_packet(skb, batman_if, dstaddr);
- send_raw_packet((unsigned char *)&info->packet,
- packet_length, batman_if, dstaddr);
return;
out:
- spin_unlock_irqrestore(&orig_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
}
/* only send one vis packet. called from send_vis_packets() */
-static void send_vis_packet(struct vis_info *info)
+static void send_vis_packet(struct bat_priv *bat_priv, struct vis_info *info)
{
- int packet_length;
+ struct vis_packet *packet;
- if (info->packet.ttl < 2) {
- pr_warning("Error - can't send vis packet: ttl exceeded\n");
+ packet = (struct vis_packet *)info->skb_packet->data;
+ if (packet->ttl < 2) {
+ pr_debug("Error - can't send vis packet: ttl exceeded\n");
return;
}
- memcpy(info->packet.sender_orig, main_if_addr, ETH_ALEN);
- info->packet.ttl--;
-
- packet_length = sizeof(struct vis_packet) +
- info->packet.entries * sizeof(struct vis_info_entry);
+ memcpy(packet->sender_orig, bat_priv->primary_if->net_dev->dev_addr,
+ ETH_ALEN);
+ packet->ttl--;
- if (is_bcast(info->packet.target_orig))
- broadcast_vis_packet(info, packet_length);
+ if (is_bcast(packet->target_orig))
+ broadcast_vis_packet(bat_priv, info);
else
- unicast_vis_packet(info, packet_length);
- info->packet.ttl++; /* restore TTL */
+ unicast_vis_packet(bat_priv, info);
+ packet->ttl++; /* restore TTL */
}
/* called from timer; send (and maybe generate) vis packet. */
static void 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, *temp;
unsigned long flags;
- /* FIXME: each batman_if will be attached to a softif */
- struct bat_priv *bat_priv = netdev_priv(soft_device);
- spin_lock_irqsave(&vis_hash_lock, flags);
-
- purge_vis_packets();
+ spin_lock_irqsave(&bat_priv->vis_hash_lock, flags);
+ purge_vis_packets(bat_priv);
if (generate_vis_packet(bat_priv) == 0) {
/* schedule if generation was successful */
- send_list_add(my_vis_info);
+ send_list_add(bat_priv, bat_priv->my_vis_info);
}
- list_for_each_entry_safe(info, temp, &send_list, send_list) {
+ list_for_each_entry_safe(info, temp, &bat_priv->vis_send_list,
+ send_list) {
kref_get(&info->refcount);
- spin_unlock_irqrestore(&vis_hash_lock, flags);
+ spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
- send_vis_packet(info);
+ if (bat_priv->primary_if)
+ send_vis_packet(bat_priv, info);
- spin_lock_irqsave(&vis_hash_lock, flags);
+ spin_lock_irqsave(&bat_priv->vis_hash_lock, flags);
send_list_del(info);
kref_put(&info->refcount, free_info);
}
- spin_unlock_irqrestore(&vis_hash_lock, flags);
- start_vis_timer();
+ spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
+ start_vis_timer(bat_priv);
}
-static DECLARE_DELAYED_WORK(vis_timer_wq, send_vis_packets);
/* 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(void)
+int vis_init(struct bat_priv *bat_priv)
{
+ struct vis_packet *packet;
unsigned long flags;
- if (vis_hash)
+
+ if (bat_priv->vis_hash)
return 1;
- spin_lock_irqsave(&vis_hash_lock, flags);
+ spin_lock_irqsave(&bat_priv->vis_hash_lock, flags);
- vis_hash = hash_new(256, vis_info_cmp, vis_info_choose);
- if (!vis_hash) {
+ bat_priv->vis_hash = hash_new(256, vis_info_cmp, vis_info_choose);
+ if (!bat_priv->vis_hash) {
pr_err("Can't initialize vis_hash\n");
goto err;
}
- my_vis_info = kmalloc(1000, GFP_ATOMIC);
- if (!my_vis_info) {
+ bat_priv->my_vis_info = kmalloc(MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
+ if (!bat_priv->my_vis_info) {
pr_err("Can't initialize vis packet\n");
goto err;
}
+ bat_priv->my_vis_info->skb_packet = dev_alloc_skb(
+ sizeof(struct vis_packet) +
+ MAX_VIS_PACKET_SIZE +
+ sizeof(struct ethhdr));
+ if (!bat_priv->my_vis_info->skb_packet)
+ goto free_info;
+
+ skb_reserve(bat_priv->my_vis_info->skb_packet, sizeof(struct ethhdr));
+ packet = (struct vis_packet *)skb_put(
+ bat_priv->my_vis_info->skb_packet,
+ sizeof(struct vis_packet));
+
/* prefill the vis info */
- my_vis_info->first_seen = jiffies - msecs_to_jiffies(VIS_INTERVAL);
- INIT_LIST_HEAD(&my_vis_info->recv_list);
- INIT_LIST_HEAD(&my_vis_info->send_list);
- kref_init(&my_vis_info->refcount);
- my_vis_info->packet.version = COMPAT_VERSION;
- my_vis_info->packet.packet_type = BAT_VIS;
- my_vis_info->packet.ttl = TTL;
- my_vis_info->packet.seqno = 0;
- my_vis_info->packet.entries = 0;
-
- INIT_LIST_HEAD(&send_list);
-
- memcpy(my_vis_info->packet.vis_orig, main_if_addr, ETH_ALEN);
- memcpy(my_vis_info->packet.sender_orig, main_if_addr, ETH_ALEN);
-
- if (hash_add(vis_hash, my_vis_info) < 0) {
+ bat_priv->my_vis_info->first_seen = jiffies -
+ msecs_to_jiffies(VIS_INTERVAL);
+ 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->version = COMPAT_VERSION;
+ packet->packet_type = BAT_VIS;
+ packet->ttl = TTL;
+ packet->seqno = 0;
+ packet->entries = 0;
+
+ INIT_LIST_HEAD(&bat_priv->vis_send_list);
+
+ if (hash_add(bat_priv->vis_hash, bat_priv->my_vis_info) < 0) {
pr_err("Can't add own vis packet into hash\n");
/* not in hash, need to remove it manually. */
- kref_put(&my_vis_info->refcount, free_info);
+ kref_put(&bat_priv->my_vis_info->refcount, free_info);
goto err;
}
- spin_unlock_irqrestore(&vis_hash_lock, flags);
- start_vis_timer();
+ spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
+ start_vis_timer(bat_priv);
return 1;
+free_info:
+ kfree(bat_priv->my_vis_info);
+ bat_priv->my_vis_info = NULL;
err:
- spin_unlock_irqrestore(&vis_hash_lock, flags);
- vis_quit();
+ spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
+ vis_quit(bat_priv);
return 0;
}
/* Decrease the reference count on a hash item info */
-static void free_info_ref(void *data)
+static void free_info_ref(void *data, void *arg)
{
struct vis_info *info = data;
}
/* shutdown vis-server */
-void vis_quit(void)
+void vis_quit(struct bat_priv *bat_priv)
{
unsigned long flags;
- if (!vis_hash)
+ if (!bat_priv->vis_hash)
return;
- cancel_delayed_work_sync(&vis_timer_wq);
+ cancel_delayed_work_sync(&bat_priv->vis_work);
- spin_lock_irqsave(&vis_hash_lock, flags);
+ spin_lock_irqsave(&bat_priv->vis_hash_lock, flags);
/* properly remove, kill timers ... */
- hash_delete(vis_hash, free_info_ref);
- vis_hash = NULL;
- my_vis_info = NULL;
- spin_unlock_irqrestore(&vis_hash_lock, flags);
+ hash_delete(bat_priv->vis_hash, free_info_ref, NULL);
+ bat_priv->vis_hash = NULL;
+ bat_priv->my_vis_info = NULL;
+ spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
}
/* schedule packets for (re)transmission */
-static void start_vis_timer(void)
+static void start_vis_timer(struct bat_priv *bat_priv)
{
- queue_delayed_work(bat_event_workqueue, &vis_timer_wq,
- (VIS_INTERVAL * HZ) / 1000);
+ 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));
}
projects / mv-sheeva.git / blobdiff