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Staging: batman-adv: multiple mesh clouds

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This patch removes all remaining global variables and includes the
necessary bits into the bat_priv structure. It is the last
remaining piece to allow multiple concurrent mesh clouds on the
same device.
A few global variables have been rendered obsolete during the process
and have been removed entirely.

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
[sven.eckelmann@gmx.de: Rework on top of current version]
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Marek Lindner 2010-09-05 01:58:35 +02:00 committed by Greg Kroah-Hartman
parent 6a0e9fa88d
commit 8c70f13832
20 changed files with 677 additions and 597 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/staging/batman-adv/aggregation.c
View File

@ -102,10 +102,10 @@ static void new_aggregated_packet(unsigned char *packet_buff, int packet_len,
struct batman_if *if_incoming,
int own_packet)
{
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct forw_packet *forw_packet_aggr;
unsigned long flags;
unsigned char *skb_buff;
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
/* own packet should always be scheduled */
if (!own_packet) {
@ -150,9 +150,9 @@ static void new_aggregated_packet(unsigned char *packet_buff, int packet_len,
forw_packet_aggr->direct_link_flags |= 1;
/* add new packet to packet list */
spin_lock_irqsave(&forw_bat_list_lock, flags);
hlist_add_head(&forw_packet_aggr->list, &forw_bat_list);
spin_unlock_irqrestore(&forw_bat_list_lock, flags);
spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags);
hlist_add_head(&forw_packet_aggr->list, &bat_priv->forw_bat_list);
spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags);
/* start timer for this packet */
INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work,
@ -198,11 +198,11 @@ void add_bat_packet_to_list(struct bat_priv *bat_priv,
unsigned long flags;
/* find position for the packet in the forward queue */
spin_lock_irqsave(&forw_bat_list_lock, flags);
spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags);
/* own packets are not to be aggregated */
if ((atomic_read(&bat_priv->aggregation_enabled)) && (!own_packet)) {
hlist_for_each_entry(forw_packet_pos, tmp_node, &forw_bat_list,
list) {
hlist_for_each_entry(forw_packet_pos, tmp_node,
&bat_priv->forw_bat_list, list) {
if (can_aggregate_with(batman_packet,
packet_len,
send_time,
@ -219,7 +219,7 @@ void add_bat_packet_to_list(struct bat_priv *bat_priv,
* suitable aggregation packet found */
if (forw_packet_aggr == NULL) {
/* the following section can run without the lock */
spin_unlock_irqrestore(&forw_bat_list_lock, flags);
spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags);
/**
* if we could not aggregate this packet with one of the others
@ -237,7 +237,7 @@ void add_bat_packet_to_list(struct bat_priv *bat_priv,
aggregate(forw_packet_aggr,
packet_buff, packet_len,
direct_link);
spin_unlock_irqrestore(&forw_bat_list_lock, flags);
spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags);
}
}

2
drivers/staging/batman-adv/bat_sysfs.c
View File

@ -411,7 +411,7 @@ static ssize_t show_mesh_iface(struct kobject *kobj, struct attribute *attr,
return sprintf(buff, "%s\n",
batman_if->if_status == IF_NOT_IN_USE ?
"none" : "bat0");
"none" : batman_if->soft_iface->name);
}
static ssize_t store_mesh_iface(struct kobject *kobj, struct attribute *attr,

48
drivers/staging/batman-adv/hard-interface.c
View File

@ -77,13 +77,15 @@ static int is_valid_iface(struct net_device *net_dev)
return 1;
}
static struct batman_if *get_active_batman_if(void)
static struct batman_if *get_active_batman_if(struct net_device *soft_iface)
{
struct batman_if *batman_if;
/* TODO: should check interfaces belonging to bat_priv */
rcu_read_lock();
list_for_each_entry_rcu(batman_if, &if_list, list) {
if (batman_if->soft_iface != soft_iface)
continue;
if (batman_if->if_status == IF_ACTIVE)
goto out;
}
@ -99,23 +101,29 @@ static void set_primary_if(struct bat_priv *bat_priv,
struct batman_if *batman_if)
{
struct batman_packet *batman_packet;
struct vis_packet *vis_packet;
bat_priv->primary_if = batman_if;
if (!bat_priv->primary_if)
return;
set_main_if_addr(batman_if->net_dev->dev_addr);
batman_packet = (struct batman_packet *)(batman_if->packet_buff);
batman_packet->flags = PRIMARIES_FIRST_HOP;
batman_packet->ttl = TTL;
vis_packet = (struct vis_packet *)
bat_priv->my_vis_info->skb_packet->data;
memcpy(vis_packet->vis_orig,
bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
memcpy(vis_packet->sender_orig,
bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
/***
* hacky trick to make sure that we send the HNA information via
* our new primary interface
*/
atomic_set(&hna_local_changed, 1);
atomic_set(&bat_priv->hna_local_changed, 1);
}
static bool hardif_is_iface_up(struct batman_if *batman_if)
@ -217,9 +225,6 @@ static void hardif_activate_interface(struct batman_if *batman_if)
bat_info(batman_if->soft_iface, "Interface activated: %s\n",
batman_if->dev);
if (atomic_read(&module_state) == MODULE_INACTIVE)
activate_module();
update_min_mtu(batman_if->soft_iface);
return;
}
@ -347,11 +352,16 @@ void hardif_disable_interface(struct batman_if *batman_if)
orig_hash_del_if(batman_if, bat_priv->num_ifaces);
if (batman_if == bat_priv->primary_if)
set_primary_if(bat_priv, get_active_batman_if());
set_primary_if(bat_priv,
get_active_batman_if(batman_if->soft_iface));
kfree(batman_if->packet_buff);
batman_if->packet_buff = NULL;
batman_if->if_status = IF_NOT_IN_USE;
/* delete all references to this batman_if */
purge_orig_ref(bat_priv);
purge_outstanding_packets(bat_priv, batman_if);
dev_put(batman_if->soft_iface);
/* nobody uses this interface anymore */
@ -359,10 +369,6 @@ void hardif_disable_interface(struct batman_if *batman_if)
softif_destroy(batman_if->soft_iface);
batman_if->soft_iface = NULL;
/*if ((atomic_read(&module_state) == MODULE_ACTIVE) &&
(bat_priv->num_ifaces == 0))
deactivate_module();*/
}
static struct batman_if *hardif_add_interface(struct net_device *net_dev)
@ -415,10 +421,6 @@ static void hardif_free_interface(struct rcu_head *rcu)
{
struct batman_if *batman_if = container_of(rcu, struct batman_if, rcu);
/* delete all references to this batman_if */
purge_orig(NULL);
purge_outstanding_packets(batman_if);
kfree(batman_if->dev);
kfree(batman_if);
}
@ -512,9 +514,6 @@ int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
if (!skb)
goto err_out;
if (atomic_read(&module_state) != MODULE_ACTIVE)
goto err_free;
/* packet should hold at least type and version */
if (unlikely(!pskb_may_pull(skb, 2)))
goto err_free;
@ -524,12 +523,19 @@ int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
|| !skb_mac_header(skb)))
goto err_free;
if (!batman_if->soft_iface)
goto err_free;
bat_priv = netdev_priv(batman_if->soft_iface);
if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
goto err_free;
/* discard frames on not active interfaces */
if (batman_if->if_status != IF_ACTIVE)
goto err_free;
batman_packet = (struct batman_packet *)skb->data;
bat_priv = netdev_priv(batman_if->soft_iface);
if (batman_packet->version != COMPAT_VERSION) {
bat_dbg(DBG_BATMAN, bat_priv,

11
drivers/staging/batman-adv/icmp_socket.c
View File

@ -218,11 +218,12 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
goto free_skb;
}
if (atomic_read(&module_state) != MODULE_ACTIVE)
if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
goto dst_unreach;
spin_lock_irqsave(&orig_hash_lock, flags);
orig_node = (struct orig_node *)hash_find(orig_hash, icmp_packet->dst);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
icmp_packet->dst));
if (!orig_node)
goto unlock;
@ -233,7 +234,7 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
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);
if (!batman_if)
goto dst_unreach;
@ -253,7 +254,7 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
goto out;
unlock:
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
dst_unreach:
icmp_packet->msg_type = DESTINATION_UNREACHABLE;
bat_socket_add_packet(socket_client, icmp_packet, packet_len);

74
drivers/staging/batman-adv/main.c
View File

@ -34,28 +34,14 @@
#include "hash.h"
struct list_head if_list;
struct hlist_head forw_bat_list;
struct hlist_head forw_bcast_list;
struct hashtable_t *orig_hash;
DEFINE_SPINLOCK(orig_hash_lock);
DEFINE_SPINLOCK(forw_bat_list_lock);
DEFINE_SPINLOCK(forw_bcast_list_lock);
int16_t num_hna;
unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
atomic_t module_state;
struct workqueue_struct *bat_event_workqueue;
static int __init batman_init(void)
{
INIT_LIST_HEAD(&if_list);
INIT_HLIST_HEAD(&forw_bat_list);
INIT_HLIST_HEAD(&forw_bcast_list);
atomic_set(&module_state, MODULE_INACTIVE);
/* the name should not be longer than 10 chars - see
* http://lwn.net/Articles/23634/ */
@ -78,64 +64,78 @@ static int __init batman_init(void)
static void __exit batman_exit(void)
{
deactivate_module();
debugfs_destroy();
unregister_netdevice_notifier(&hard_if_notifier);
hardif_remove_interfaces();
flush_workqueue(bat_event_workqueue);
destroy_workqueue(bat_event_workqueue);
bat_event_workqueue = NULL;
}
/* activates the module, starts timer ... */
void activate_module(void)
int mesh_init(struct net_device *soft_iface)
{
if (originator_init() < 1)
struct bat_priv *bat_priv = netdev_priv(soft_iface);
spin_lock_init(&bat_priv->orig_hash_lock);
spin_lock_init(&bat_priv->forw_bat_list_lock);
spin_lock_init(&bat_priv->forw_bcast_list_lock);
spin_lock_init(&bat_priv->hna_lhash_lock);
spin_lock_init(&bat_priv->hna_ghash_lock);
spin_lock_init(&bat_priv->gw_list_lock);
spin_lock_init(&bat_priv->vis_hash_lock);
spin_lock_init(&bat_priv->vis_list_lock);
INIT_HLIST_HEAD(&bat_priv->forw_bat_list);
INIT_HLIST_HEAD(&bat_priv->forw_bcast_list);
INIT_HLIST_HEAD(&bat_priv->gw_list);
if (originator_init(bat_priv) < 1)
goto err;
if (hna_local_init() < 1)
if (hna_local_init(bat_priv) < 1)
goto err;
if (hna_global_init() < 1)
if (hna_global_init(bat_priv) < 1)
goto err;
/*hna_local_add(soft_device->dev_addr);*/
hna_local_add(soft_iface, soft_iface->dev_addr);
if (vis_init() < 1)
if (vis_init(bat_priv) < 1)
goto err;
/*update_min_mtu();*/
atomic_set(&module_state, MODULE_ACTIVE);
atomic_set(&bat_priv->mesh_state, MESH_ACTIVE);
goto end;
err:
pr_err("Unable to allocate memory for mesh information structures: "
"out of mem ?\n");
deactivate_module();
mesh_free(soft_iface);
return -1;
end:
return;
return 0;
}
/* shuts down the whole module.*/
void deactivate_module(void)
void mesh_free(struct net_device *soft_iface)
{
atomic_set(&module_state, MODULE_DEACTIVATING);
struct bat_priv *bat_priv = netdev_priv(soft_iface);
purge_outstanding_packets(NULL);
flush_workqueue(bat_event_workqueue);
atomic_set(&bat_priv->mesh_state, MESH_DEACTIVATING);
vis_quit();
purge_outstanding_packets(bat_priv, NULL);
originator_free();
vis_quit(bat_priv);
hna_local_free();
hna_global_free();
originator_free(bat_priv);
hna_local_free(bat_priv);
hna_global_free(bat_priv);
synchronize_net();
synchronize_rcu();
atomic_set(&module_state, MODULE_INACTIVE);
atomic_set(&bat_priv->mesh_state, MESH_INACTIVE);
}
void inc_module_count(void)

22
drivers/staging/batman-adv/main.h
View File

@ -76,9 +76,9 @@
#define EXPECTED_SEQNO_RANGE 65536
/* don't reset again within 30 seconds */
#define MODULE_INACTIVE 0
#define MODULE_ACTIVE 1
#define MODULE_DEACTIVATING 2
#define MESH_INACTIVE 0
#define MESH_ACTIVE 1
#define MESH_DEACTIVATING 2
#define BCAST_QUEUE_LEN 256
#define BATMAN_QUEUE_LEN 256
@ -128,22 +128,12 @@
#endif
extern struct list_head if_list;
extern struct hlist_head forw_bat_list;
extern struct hlist_head forw_bcast_list;
extern struct hashtable_t *orig_hash;
extern spinlock_t orig_hash_lock;
extern spinlock_t forw_bat_list_lock;
extern spinlock_t forw_bcast_list_lock;
extern int16_t num_hna;
extern unsigned char broadcast_addr[];
extern atomic_t module_state;
extern struct workqueue_struct *bat_event_workqueue;
void activate_module(void);
void deactivate_module(void);
int mesh_init(struct net_device *soft_iface);
void mesh_free(struct net_device *soft_iface);
void inc_module_count(void);
void dec_module_count(void);
int addr_to_string(char *buff, uint8_t *addr);
@ -154,7 +144,7 @@ int is_bcast(uint8_t *addr);
int is_mcast(uint8_t *addr);
#ifdef CONFIG_BATMAN_ADV_DEBUG
extern int debug_log(struct bat_priv *bat_priv, char *fmt, ...);
int debug_log(struct bat_priv *bat_priv, char *fmt, ...);
#define bat_dbg(type, bat_priv, fmt, arg...) \
do { \

119
drivers/staging/batman-adv/originator.c
View File

@ -29,31 +29,32 @@
#include "hard-interface.h"
#include "unicast.h"
static DECLARE_DELAYED_WORK(purge_orig_wq, purge_orig);
static void purge_orig(struct work_struct *work);
static void start_purge_timer(void)
static void start_purge_timer(struct bat_priv *bat_priv)
{
queue_delayed_work(bat_event_workqueue, &purge_orig_wq, 1 * HZ);
INIT_DELAYED_WORK(&bat_priv->orig_work, purge_orig);
queue_delayed_work(bat_event_workqueue, &bat_priv->orig_work, 1 * HZ);
}
int originator_init(void)
int originator_init(struct bat_priv *bat_priv)
{
unsigned long flags;
if (orig_hash)
if (bat_priv->orig_hash)
return 1;
spin_lock_irqsave(&orig_hash_lock, flags);
orig_hash = hash_new(128, compare_orig, choose_orig);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
bat_priv->orig_hash = hash_new(128, compare_orig, choose_orig);
if (!orig_hash)
if (!bat_priv->orig_hash)
goto err;
spin_unlock_irqrestore(&orig_hash_lock, flags);
start_purge_timer();
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
start_purge_timer(bat_priv);
return 1;
err:
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return 0;
}
@ -104,19 +105,19 @@ static void free_orig_node(void *data, void *arg)
kfree(orig_node);
}
void originator_free(void)
void originator_free(struct bat_priv *bat_priv)
{
unsigned long flags;
if (!orig_hash)
if (!bat_priv->orig_hash)
return;
cancel_delayed_work_sync(&purge_orig_wq);
cancel_delayed_work_sync(&bat_priv->orig_work);
spin_lock_irqsave(&orig_hash_lock, flags);
/*hash_delete(orig_hash, free_orig_node, bat_priv);*/
orig_hash = NULL;
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
hash_delete(bat_priv->orig_hash, free_orig_node, bat_priv);
bat_priv->orig_hash = NULL;
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
}
/* this function finds or creates an originator entry for the given
@ -127,9 +128,9 @@ struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr)
struct hashtable_t *swaphash;
int size;
orig_node = ((struct orig_node *)hash_find(orig_hash, addr));
orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, addr));
if (orig_node != NULL)
if (orig_node)
return orig_node;
bat_dbg(DBG_BATMAN, bat_priv,
@ -164,17 +165,18 @@ struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr)
if (!orig_node->bcast_own_sum)
goto free_bcast_own;
if (hash_add(orig_hash, orig_node) < 0)
if (hash_add(bat_priv->orig_hash, orig_node) < 0)
goto free_bcast_own_sum;
if (orig_hash->elements * 4 > orig_hash->size) {
swaphash = hash_resize(orig_hash, orig_hash->size * 2);
if (bat_priv->orig_hash->elements * 4 > bat_priv->orig_hash->size) {
swaphash = hash_resize(bat_priv->orig_hash,
bat_priv->orig_hash->size * 2);
if (swaphash == NULL)
if (!swaphash)
bat_dbg(DBG_BATMAN, bat_priv,
"Couldn't resize orig hash table\n");
else
orig_hash = swaphash;
bat_priv->orig_hash = swaphash;
}
return orig_node;
@ -203,8 +205,8 @@ static bool purge_orig_neighbors(struct bat_priv *bat_priv,
if ((time_after(jiffies,
neigh_node->last_valid + PURGE_TIMEOUT * HZ)) ||
(neigh_node->if_incoming->if_status ==
IF_TO_BE_REMOVED)) {
(neigh_node->if_incoming->if_status == IF_INACTIVE) ||
(neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) {
if (neigh_node->if_incoming->if_status ==
IF_TO_BE_REMOVED)
@ -260,34 +262,46 @@ static bool purge_orig_node(struct bat_priv *bat_priv,
return false;
}
void purge_orig(struct work_struct *work)
static void _purge_orig(struct bat_priv *bat_priv)
{
HASHIT(hashit);
struct orig_node *orig_node;
unsigned long flags;
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
/* for all origins... */
while (hash_iterate(orig_hash, &hashit)) {
while (hash_iterate(bat_priv->orig_hash, &hashit)) {
orig_node = hashit.bucket->data;
/*if (purge_orig_node(bat_priv, orig_node)) {
hash_remove_bucket(orig_hash, &hashit);
free_orig_node(orig_node);
}*/
if (purge_orig_node(bat_priv, orig_node)) {
hash_remove_bucket(bat_priv->orig_hash, &hashit);
free_orig_node(orig_node, bat_priv);
}
if (time_after(jiffies, (orig_node->last_frag_packet +
msecs_to_jiffies(FRAG_TIMEOUT))))
frag_list_free(&orig_node->frag_list);
}
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
/* if work == NULL we were not called by the timer
* and thus do not need to re-arm the timer */
if (work)
start_purge_timer();
}
static void purge_orig(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, orig_work);
_purge_orig(bat_priv);
start_purge_timer(bat_priv);
}
void purge_orig_ref(struct bat_priv *bat_priv)
{
_purge_orig(bat_priv);
}
int orig_seq_print_text(struct seq_file *seq, void *offset)
@ -325,9 +339,9 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
"outgoingIF", "Potential nexthops");
rcu_read_unlock();
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
while (hash_iterate(orig_hash, &hashit)) {
while (hash_iterate(bat_priv->orig_hash, &hashit)) {
orig_node = hashit.bucket->data;
@ -359,7 +373,7 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
batman_count++;
}
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
if ((batman_count == 0))
seq_printf(seq, "No batman nodes in range ...\n");
@ -399,26 +413,27 @@ static int orig_node_add_if(struct orig_node *orig_node, int max_if_num)
int orig_hash_add_if(struct batman_if *batman_if, int max_if_num)
{
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
struct orig_node *orig_node;
unsigned long flags;
HASHIT(hashit);
/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
* if_num */
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
while (hash_iterate(orig_hash, &hashit)) {
while (hash_iterate(bat_priv->orig_hash, &hashit)) {
orig_node = hashit.bucket->data;
if (orig_node_add_if(orig_node, max_if_num) == -1)
goto err;
}
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return 0;
err:
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return -ENOMEM;
}
@ -476,6 +491,7 @@ free_own_sum:
int orig_hash_del_if(struct batman_if *batman_if, int max_if_num)
{
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
struct batman_if *batman_if_tmp;
struct orig_node *orig_node;
unsigned long flags;
@ -484,9 +500,9 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num)
/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
* if_num */
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
while (hash_iterate(orig_hash, &hashit)) {
while (hash_iterate(bat_priv->orig_hash, &hashit)) {
orig_node = hashit.bucket->data;
ret = orig_node_del_if(orig_node, max_if_num,
@ -505,16 +521,19 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num)
if (batman_if == batman_if_tmp)
continue;
if (batman_if->soft_iface != batman_if_tmp->soft_iface)
continue;
if (batman_if_tmp->if_num > batman_if->if_num)
batman_if_tmp->if_num--;
}
rcu_read_unlock();
batman_if->if_num = -1;
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return 0;
err:
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return -ENOMEM;
}

6
drivers/staging/batman-adv/originator.h
View File

@ -22,9 +22,9 @@
#ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
#define _NET_BATMAN_ADV_ORIGINATOR_H_
int originator_init(void);
void originator_free(void);
void purge_orig(struct work_struct *work);
int originator_init(struct bat_priv *bat_priv);
void originator_free(struct bat_priv *bat_priv);
void purge_orig_ref(struct bat_priv *bat_priv);
struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr);
struct neigh_node *
create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node,

115
drivers/staging/batman-adv/routing.c
View File

@ -34,8 +34,6 @@
#include "aggregation.h"
#include "unicast.h"
static DECLARE_WAIT_QUEUE_HEAD(thread_wait);
void slide_own_bcast_window(struct batman_if *batman_if)
{
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
@ -44,9 +42,9 @@ void slide_own_bcast_window(struct batman_if *batman_if)
TYPE_OF_WORD *word;
unsigned long flags;
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
while (hash_iterate(orig_hash, &hashit)) {
while (hash_iterate(bat_priv->orig_hash, &hashit)) {
orig_node = hashit.bucket->data;
word = &(orig_node->bcast_own[batman_if->if_num * NUM_WORDS]);
@ -55,7 +53,7 @@ void slide_own_bcast_window(struct batman_if *batman_if)
bit_packet_count(word);
}
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
}
static void update_HNA(struct bat_priv *bat_priv, struct orig_node *orig_node,
@ -568,6 +566,9 @@ void receive_bat_packet(struct ethhdr *ethhdr,
if (batman_if->if_status != IF_ACTIVE)
continue;
if (batman_if->soft_iface != if_incoming->soft_iface)
continue;
if (compare_orig(ethhdr->h_source,
batman_if->net_dev->dev_addr))
is_my_addr = 1;
@ -739,9 +740,9 @@ void receive_bat_packet(struct ethhdr *ethhdr,
0, hna_buff_len, if_incoming);
}
int recv_bat_packet(struct sk_buff *skb,
struct batman_if *batman_if)
int recv_bat_packet(struct sk_buff *skb, struct batman_if *batman_if)
{
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
struct ethhdr *ethhdr;
unsigned long flags;
@ -769,22 +770,20 @@ int recv_bat_packet(struct sk_buff *skb,
ethhdr = (struct ethhdr *)skb_mac_header(skb);
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
receive_aggr_bat_packet(ethhdr,
skb->data,
skb_headlen(skb),
batman_if);
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
kfree_skb(skb);
return NET_RX_SUCCESS;
}
static int recv_my_icmp_packet(struct sk_buff *skb,
struct batman_if *recv_if, size_t icmp_len)
static int recv_my_icmp_packet(struct bat_priv *bat_priv,
struct sk_buff *skb, size_t icmp_len)
{
/* FIXME: each batman_if will be attached to a softif */
struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
struct orig_node *orig_node;
struct icmp_packet_rr *icmp_packet;
struct ethhdr *ethhdr;
@ -807,8 +806,8 @@ static int recv_my_icmp_packet(struct sk_buff *skb,
/* answer echo request (ping) */
/* get routing information */
spin_lock_irqsave(&orig_hash_lock, flags);
orig_node = ((struct orig_node *)hash_find(orig_hash,
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
icmp_packet->orig));
ret = NET_RX_DROP;
@ -819,7 +818,7 @@ static int recv_my_icmp_packet(struct sk_buff *skb,
* 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);
/* create a copy of the skb, if needed, to modify it. */
if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
@ -838,16 +837,14 @@ static int recv_my_icmp_packet(struct sk_buff *skb,
ret = NET_RX_SUCCESS;
} else
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return ret;
}
static int recv_icmp_ttl_exceeded(struct sk_buff *skb,
struct batman_if *recv_if, size_t icmp_len)
static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv,
struct sk_buff *skb, size_t icmp_len)
{
/* FIXME: each batman_if will be attached to a softif */
struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
struct orig_node *orig_node;
struct icmp_packet *icmp_packet;
struct ethhdr *ethhdr;
@ -871,9 +868,9 @@ static int recv_icmp_ttl_exceeded(struct sk_buff *skb,
return NET_RX_DROP;
/* get routing information */
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
orig_node = ((struct orig_node *)
hash_find(orig_hash, icmp_packet->orig));
hash_find(bat_priv->orig_hash, icmp_packet->orig));
ret = NET_RX_DROP;
if ((orig_node != NULL) &&
@ -883,7 +880,7 @@ static int recv_icmp_ttl_exceeded(struct sk_buff *skb,
* 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);
/* create a copy of the skb, if needed, to modify it. */
if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
@ -902,7 +899,7 @@ static int recv_icmp_ttl_exceeded(struct sk_buff *skb,
ret = NET_RX_SUCCESS;
} else
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return ret;
}
@ -910,6 +907,7 @@ static int recv_icmp_ttl_exceeded(struct sk_buff *skb,
int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if)
{
struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
struct icmp_packet_rr *icmp_packet;
struct ethhdr *ethhdr;
struct orig_node *orig_node;
@ -955,18 +953,18 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if)
/* packet for me */
if (is_my_mac(icmp_packet->dst))
return recv_my_icmp_packet(skb, recv_if, hdr_size);
return recv_my_icmp_packet(bat_priv, skb, hdr_size);
/* TTL exceeded */
if (icmp_packet->ttl < 2)
return recv_icmp_ttl_exceeded(skb, recv_if, hdr_size);
return recv_icmp_ttl_exceeded(bat_priv, skb, hdr_size);
ret = NET_RX_DROP;
/* get routing information */
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
orig_node = ((struct orig_node *)
hash_find(orig_hash, icmp_packet->dst));
hash_find(bat_priv->orig_hash, icmp_packet->dst));
if ((orig_node != NULL) &&
(orig_node->router != NULL)) {
@ -975,7 +973,7 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if)
* 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);
/* create a copy of the skb, if needed, to modify it. */
if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
@ -992,7 +990,7 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if)
ret = NET_RX_SUCCESS;
} else
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return ret;
}
@ -1041,8 +1039,9 @@ struct neigh_node *find_router(struct orig_node *orig_node,
router_orig->orig, ETH_ALEN) == 0) {
primary_orig_node = router_orig;
} else {
primary_orig_node = hash_find(orig_hash,
primary_orig_node = hash_find(bat_priv->orig_hash,
router_orig->primary_addr);
if (!primary_orig_node)
return orig_node->router;
}
@ -1122,6 +1121,7 @@ static int check_unicast_packet(struct sk_buff *skb, int hdr_size)
static int route_unicast_packet(struct sk_buff *skb,
struct batman_if *recv_if, int hdr_size)
{
struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
struct orig_node *orig_node;
struct neigh_node *router;
struct batman_if *batman_if;
@ -1147,14 +1147,14 @@ static int route_unicast_packet(struct sk_buff *skb,
}
/* get routing information */
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
orig_node = ((struct orig_node *)
hash_find(orig_hash, unicast_packet->dest));
hash_find(bat_priv->orig_hash, unicast_packet->dest));
router = find_router(orig_node, recv_if);
if (!router) {
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return NET_RX_DROP;
}
@ -1164,13 +1164,13 @@ static int route_unicast_packet(struct sk_buff *skb,
batman_if = router->if_incoming;
memcpy(dstaddr, router->addr, ETH_ALEN);
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
/* create a copy of the skb, if needed, to modify it. */
if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
return NET_RX_DROP;
unicast_packet = (struct unicast_packet *) skb->data;
unicast_packet = (struct unicast_packet *)skb->data;
ethhdr = (struct ethhdr *)skb_mac_header(skb);
/* decrement ttl */
@ -1203,6 +1203,7 @@ int recv_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if)
int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if)
{
struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
struct unicast_frag_packet *unicast_packet;
struct orig_node *orig_node;
struct frag_packet_list_entry *tmp_frag_entry;
@ -1212,19 +1213,20 @@ int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if)
if (check_unicast_packet(skb, hdr_size) < 0)
return NET_RX_DROP;
unicast_packet = (struct unicast_frag_packet *) skb->data;
unicast_packet = (struct unicast_frag_packet *)skb->data;
/* packet for me */
if (is_my_mac(unicast_packet->dest)) {
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
orig_node = ((struct orig_node *)
hash_find(orig_hash, unicast_packet->orig));
hash_find(bat_priv->orig_hash, unicast_packet->orig));
if (!orig_node) {
pr_warning("couldn't find orig node for "
"fragmentation\n");
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock,
flags);
return NET_RX_DROP;
}
@ -1235,17 +1237,18 @@ int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if)
tmp_frag_entry =
search_frag_packet(&orig_node->frag_list,
unicast_packet);
unicast_packet);
if (!tmp_frag_entry) {
create_frag_entry(&orig_node->frag_list, skb);
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock,
flags);
return NET_RX_SUCCESS;
}
skb = merge_frag_packet(&orig_node->frag_list,
tmp_frag_entry, skb);
spin_unlock_irqrestore(&orig_hash_lock, flags);
tmp_frag_entry, skb);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
if (!skb)
return NET_RX_DROP;
@ -1257,12 +1260,12 @@ int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if)
}
int recv_bcast_packet(struct sk_buff *skb, struct batman_if *batman_if)
int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if)
{
struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
struct orig_node *orig_node;
struct bcast_packet *bcast_packet;
struct ethhdr *ethhdr;
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
int hdr_size = sizeof(struct bcast_packet);
int32_t seq_diff;
unsigned long flags;
@ -1294,12 +1297,12 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *batman_if)
if (bcast_packet->ttl < 2)
return NET_RX_DROP;
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
orig_node = ((struct orig_node *)
hash_find(orig_hash, bcast_packet->orig));
hash_find(bat_priv->orig_hash, bcast_packet->orig));
if (orig_node == NULL) {
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return NET_RX_DROP;
}
@ -1307,7 +1310,7 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *batman_if)
if (get_bit_status(orig_node->bcast_bits,
orig_node->last_bcast_seqno,
ntohl(bcast_packet->seqno))) {
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return NET_RX_DROP;
}
@ -1316,7 +1319,7 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *batman_if)
/* check whether the packet is old and the host just restarted. */
if (window_protected(bat_priv, seq_diff,
&orig_node->bcast_seqno_reset)) {
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
return NET_RX_DROP;
}
@ -1325,21 +1328,21 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *batman_if)
if (bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1))
orig_node->last_bcast_seqno = ntohl(bcast_packet->seqno);
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
/* rebroadcast packet */
add_bcast_packet_to_list(bat_priv, skb);
/* broadcast for me */
interface_rx(batman_if->soft_iface, skb, hdr_size);
interface_rx(recv_if->soft_iface, skb, hdr_size);
return NET_RX_SUCCESS;
}
int recv_vis_packet(struct sk_buff *skb, struct batman_if *batman_if)
int recv_vis_packet(struct sk_buff *skb, struct batman_if *recv_if)
{
struct vis_packet *vis_packet;
struct ethhdr *ethhdr;
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
int hdr_size = sizeof(struct vis_packet);
/* keep skb linear */

3
drivers/staging/batman-adv/routing.h
View File

@ -37,8 +37,7 @@ int recv_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if);
int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if);
int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if);
int recv_vis_packet(struct sk_buff *skb, struct batman_if *recv_if);
int recv_bat_packet(struct sk_buff *skb,
struct batman_if *batman_if);
int recv_bat_packet(struct sk_buff *skb, struct batman_if *recv_if);
struct neigh_node *find_router(struct orig_node *orig_node,
struct batman_if *recv_if);
void update_bonding_candidates(struct bat_priv *bat_priv,

110
drivers/staging/batman-adv/send.c
View File

@ -160,8 +160,8 @@ static void send_packet_to_if(struct forw_packet *forw_packet,
static void send_packet(struct forw_packet *forw_packet)
{
struct batman_if *batman_if;
struct bat_priv *bat_priv =
netdev_priv(forw_packet->if_incoming->soft_iface);
struct net_device *soft_iface = forw_packet->if_incoming->soft_iface;
struct bat_priv *bat_priv = netdev_priv(soft_iface);
struct batman_packet *batman_packet =
(struct batman_packet *)(forw_packet->skb->data);
unsigned char directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0);
@ -199,18 +199,24 @@ static void send_packet(struct forw_packet *forw_packet)
/* broadcast on every interface */
rcu_read_lock();
list_for_each_entry_rcu(batman_if, &if_list, list)
list_for_each_entry_rcu(batman_if, &if_list, list) {
if (batman_if->soft_iface != soft_iface)
continue;
send_packet_to_if(forw_packet, batman_if);
}
rcu_read_unlock();
}
static void rebuild_batman_packet(struct batman_if *batman_if)
static void rebuild_batman_packet(struct bat_priv *bat_priv,
struct batman_if *batman_if)
{
int new_len;
unsigned char *new_buff;
struct batman_packet *batman_packet;
new_len = sizeof(struct batman_packet) + (num_hna * ETH_ALEN);
new_len = sizeof(struct batman_packet) +
(bat_priv->num_local_hna * ETH_ALEN);
new_buff = kmalloc(new_len, GFP_ATOMIC);
/* keep old buffer if kmalloc should fail */
@ -219,9 +225,9 @@ static void rebuild_batman_packet(struct batman_if *batman_if)
sizeof(struct batman_packet));
batman_packet = (struct batman_packet *)new_buff;
batman_packet->num_hna = hna_local_fill_buffer(
new_buff + sizeof(struct batman_packet),
new_len - sizeof(struct batman_packet));
batman_packet->num_hna = hna_local_fill_buffer(bat_priv,
new_buff + sizeof(struct batman_packet),
new_len - sizeof(struct batman_packet));
kfree(batman_if->packet_buff);
batman_if->packet_buff = new_buff;
@ -253,9 +259,9 @@ void schedule_own_packet(struct batman_if *batman_if)
batman_if->if_status = IF_ACTIVE;
/* if local hna has changed and interface is a primary interface */
if ((atomic_read(&hna_local_changed)) &&
if ((atomic_read(&bat_priv->hna_local_changed)) &&
(batman_if == bat_priv->primary_if))
rebuild_batman_packet(batman_if);
rebuild_batman_packet(bat_priv, batman_if);
/**
* NOTE: packet_buff might just have been re-allocated in
@ -351,16 +357,17 @@ static void forw_packet_free(struct forw_packet *forw_packet)
kfree(forw_packet);
}
static void _add_bcast_packet_to_list(struct forw_packet *forw_packet,
static void _add_bcast_packet_to_list(struct bat_priv *bat_priv,
struct forw_packet *forw_packet,
unsigned long send_time)
{
unsigned long flags;
INIT_HLIST_NODE(&forw_packet->list);
/* add new packet to packet list */
spin_lock_irqsave(&forw_bcast_list_lock, flags);
hlist_add_head(&forw_packet->list, &forw_bcast_list);
spin_unlock_irqrestore(&forw_bcast_list_lock, flags);
spin_lock_irqsave(&bat_priv->forw_bcast_list_lock, flags);
hlist_add_head(&forw_packet->list, &bat_priv->forw_bcast_list);
spin_unlock_irqrestore(&bat_priv->forw_bcast_list_lock, flags);
/* start timer for this packet */
INIT_DELAYED_WORK(&forw_packet->delayed_work,
@ -388,6 +395,9 @@ int add_bcast_packet_to_list(struct bat_priv *bat_priv, struct sk_buff *skb)
goto out;
}
if (!bat_priv->primary_if)
goto out;
forw_packet = kmalloc(sizeof(struct forw_packet), GFP_ATOMIC);
if (!forw_packet)
@ -409,7 +419,7 @@ int add_bcast_packet_to_list(struct bat_priv *bat_priv, struct sk_buff *skb)
/* how often did we send the bcast packet ? */
forw_packet->num_packets = 0;
_add_bcast_packet_to_list(forw_packet, 1);
_add_bcast_packet_to_list(bat_priv, forw_packet, 1);
return NETDEV_TX_OK;
packet_free:
@ -429,23 +439,26 @@ static void send_outstanding_bcast_packet(struct work_struct *work)
container_of(delayed_work, struct forw_packet, delayed_work);
unsigned long flags;
struct sk_buff *skb1;
struct bat_priv *bat_priv;
struct net_device *soft_iface = forw_packet->if_incoming->soft_iface;
struct bat_priv *bat_priv = netdev_priv(soft_iface);
spin_lock_irqsave(&forw_bcast_list_lock, flags);
spin_lock_irqsave(&bat_priv->forw_bcast_list_lock, flags);
hlist_del(&forw_packet->list);
spin_unlock_irqrestore(&forw_bcast_list_lock, flags);
spin_unlock_irqrestore(&bat_priv->forw_bcast_list_lock, flags);
if (atomic_read(&module_state) == MODULE_DEACTIVATING)
if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
goto out;
/* rebroadcast packet */
rcu_read_lock();
list_for_each_entry_rcu(batman_if, &if_list, list) {
if (batman_if->soft_iface != soft_iface)
continue;
/* send a copy of the saved skb */
skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC);
if (skb1)
send_skb_packet(skb1,
batman_if, broadcast_addr);
send_skb_packet(skb1, batman_if, broadcast_addr);
}
rcu_read_unlock();
@ -453,12 +466,12 @@ static void send_outstanding_bcast_packet(struct work_struct *work)
/* if we still have some more bcasts to send */
if (forw_packet->num_packets < 3) {
_add_bcast_packet_to_list(forw_packet, ((5 * HZ) / 1000));
_add_bcast_packet_to_list(bat_priv, forw_packet,
((5 * HZ) / 1000));
return;
}
out:
bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface);
forw_packet_free(forw_packet);
atomic_inc(&bat_priv->bcast_queue_left);
}
@ -472,11 +485,12 @@ void send_outstanding_bat_packet(struct work_struct *work)
unsigned long flags;
struct bat_priv *bat_priv;
spin_lock_irqsave(&forw_bat_list_lock, flags);
bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface);
spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags);
hlist_del(&forw_packet->list);
spin_unlock_irqrestore(&forw_bat_list_lock, flags);
spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags);
if (atomic_read(&module_state) == MODULE_DEACTIVATING)
if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
goto out;
send_packet(forw_packet);
@ -490,8 +504,6 @@ void send_outstanding_bat_packet(struct work_struct *work)
schedule_own_packet(forw_packet->if_incoming);
out:
bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface);
/* don't count own packet */
if (!forw_packet->own)
atomic_inc(&bat_priv->batman_queue_left);
@ -499,29 +511,25 @@ out:
forw_packet_free(forw_packet);
}
void purge_outstanding_packets(struct batman_if *batman_if)
void purge_outstanding_packets(struct bat_priv *bat_priv,
struct batman_if *batman_if)
{
struct bat_priv *bat_priv;
struct forw_packet *forw_packet;
struct hlist_node *tmp_node, *safe_tmp_node;
unsigned long flags;
if (batman_if->soft_iface) {
bat_priv = netdev_priv(batman_if->soft_iface);
if (batman_if)
bat_dbg(DBG_BATMAN, bat_priv,
"purge_outstanding_packets(): %s\n",
batman_if->dev);
else
bat_dbg(DBG_BATMAN, bat_priv,
"purge_outstanding_packets()\n");
}
if (batman_if)
bat_dbg(DBG_BATMAN, bat_priv,
"purge_outstanding_packets(): %s\n",
batman_if->dev);
else
bat_dbg(DBG_BATMAN, bat_priv,
"purge_outstanding_packets()\n");
/* free bcast list */
spin_lock_irqsave(&forw_bcast_list_lock, flags);
spin_lock_irqsave(&bat_priv->forw_bcast_list_lock, flags);
hlist_for_each_entry_safe(forw_packet, tmp_node, safe_tmp_node,
&forw_bcast_list, list) {
&bat_priv->forw_bcast_list, list) {
/**
* if purge_outstanding_packets() was called with an argmument
@ -531,21 +539,21 @@ void purge_outstanding_packets(struct batman_if *batman_if)
(forw_packet->if_incoming != batman_if))
continue;
spin_unlock_irqrestore(&forw_bcast_list_lock, flags);
spin_unlock_irqrestore(&bat_priv->forw_bcast_list_lock, flags);
/**
* send_outstanding_bcast_packet() will lock the list to
* delete the item from the list
*/
cancel_delayed_work_sync(&forw_packet->delayed_work);
spin_lock_irqsave(&forw_bcast_list_lock, flags);
spin_lock_irqsave(&bat_priv->forw_bcast_list_lock, flags);
}
spin_unlock_irqrestore(&forw_bcast_list_lock, flags);
spin_unlock_irqrestore(&bat_priv->forw_bcast_list_lock, flags);
/* free batman packet list */
spin_lock_irqsave(&forw_bat_list_lock, flags);
spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags);
hlist_for_each_entry_safe(forw_packet, tmp_node, safe_tmp_node,
&forw_bat_list, list) {
&bat_priv->forw_bat_list, list) {
/**
* if purge_outstanding_packets() was called with an argmument
@ -555,14 +563,14 @@ void purge_outstanding_packets(struct batman_if *batman_if)
(forw_packet->if_incoming != batman_if))
continue;
spin_unlock_irqrestore(&forw_bat_list_lock, flags);
spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags);
/**
* send_outstanding_bat_packet() will lock the list to
* delete the item from the list
*/
cancel_delayed_work_sync(&forw_packet->delayed_work);
spin_lock_irqsave(&forw_bat_list_lock, flags);
spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags);
}
spin_unlock_irqrestore(&forw_bat_list_lock, flags);
spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags);
}

3
drivers/staging/batman-adv/send.h
View File

@ -35,6 +35,7 @@ void schedule_forward_packet(struct orig_node *orig_node,
struct batman_if *if_outgoing);
int add_bcast_packet_to_list(struct bat_priv *bat_priv, struct sk_buff *skb);
void send_outstanding_bat_packet(struct work_struct *work);
void purge_outstanding_packets(struct batman_if *batman_if);
void purge_outstanding_packets(struct bat_priv *bat_priv,
struct batman_if *batman_if);
#endif /* _NET_BATMAN_ADV_SEND_H_ */

48
drivers/staging/batman-adv/soft-interface.c
View File

@ -35,10 +35,7 @@
#include <linux/etherdevice.h>
#include "unicast.h"
static uint32_t bcast_seqno = 1; /* give own bcast messages seq numbers to avoid
* broadcast storms */
unsigned char main_if_addr[ETH_ALEN];
static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd);
static void bat_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info);
@ -58,11 +55,6 @@ static const struct ethtool_ops bat_ethtool_ops = {
.set_rx_csum = bat_set_rx_csum
};
void set_main_if_addr(uint8_t *addr)
{
memcpy(main_if_addr, addr, ETH_ALEN);
}
int my_skb_head_push(struct sk_buff *skb, unsigned int len)
{
int result;
@ -76,7 +68,6 @@ int my_skb_head_push(struct sk_buff *skb, unsigned int len)
* to write freely in that area.
*/
result = skb_cow_head(skb, len);
if (result < 0)
return result;
@ -111,7 +102,7 @@ static int interface_set_mac_addr(struct net_device *dev, void *p)
return -EADDRNOTAVAIL;
/* only modify hna-table if it has been initialised before */
if (atomic_read(&module_state) == MODULE_ACTIVE) {
if (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) {
hna_local_remove(bat_priv, dev->dev_addr,
"mac address changed");
hna_local_add(dev, addr->sa_data);
@ -140,7 +131,7 @@ int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
struct bcast_packet *bcast_packet;
int data_len = skb->len, ret;
if (atomic_read(&module_state) != MODULE_ACTIVE)
if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
goto dropped;
soft_iface->trans_start = jiffies;
@ -150,6 +141,8 @@ int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
/* ethernet packet should be broadcasted */
if (is_bcast(ethhdr->h_dest) || is_mcast(ethhdr->h_dest)) {
if (!bat_priv->primary_if)
goto dropped;
if (my_skb_head_push(skb, sizeof(struct bcast_packet)) < 0)
goto dropped;
@ -163,14 +156,14 @@ int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
/* hw address of first interface is the orig mac because only
* this mac is known throughout the mesh */
memcpy(bcast_packet->orig, main_if_addr, ETH_ALEN);
memcpy(bcast_packet->orig,
bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
/* set broadcast sequence number */
bcast_packet->seqno = htonl(bcast_seqno);
bcast_packet->seqno =
htonl(atomic_inc_return(&bat_priv->bcast_seqno));
/* broadcast packet. on success, increase seqno. */
if (add_bcast_packet_to_list(bat_priv, skb) == NETDEV_TX_OK)
bcast_seqno++;
add_bcast_packet_to_list(bat_priv, skb);
/* a copy is stored in the bcast list, therefore removing
* the original skb. */
@ -179,10 +172,8 @@ int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
/* unicast packet */
} else {
ret = unicast_send_skb(skb, bat_priv);
if (ret != 0) {
bat_priv->stats.tx_dropped++;
goto end;
}
if (ret != 0)
goto dropped_freed;
}
bat_priv->stats.tx_packets++;
@ -190,8 +181,9 @@ int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
goto end;
dropped:
bat_priv->stats.tx_dropped++;
kfree_skb(skb);
dropped_freed:
bat_priv->stats.tx_dropped++;
end:
return NETDEV_TX_OK;
}
@ -292,7 +284,6 @@ struct net_device *softif_create(char *name)
}
ret = register_netdev(soft_iface);
if (ret < 0) {
pr_err("Unable to register the batman interface '%s': %i\n",
name, ret);
@ -310,21 +301,29 @@ struct net_device *softif_create(char *name)
atomic_set(&bat_priv->bcast_queue_left, BCAST_QUEUE_LEN);
atomic_set(&bat_priv->batman_queue_left, BATMAN_QUEUE_LEN);
atomic_set(&bat_priv->mesh_state, MESH_INACTIVE);
atomic_set(&bat_priv->bcast_seqno, 1);
atomic_set(&bat_priv->hna_local_changed, 0);
bat_priv->primary_if = NULL;
bat_priv->num_ifaces = 0;
ret = sysfs_add_meshif(soft_iface);
if (ret < 0)
goto unreg_soft_iface;
ret = debugfs_add_meshif(soft_iface);
if (ret < 0)
goto unreg_sysfs;
ret = mesh_init(soft_iface);
if (ret < 0)
goto unreg_debugfs;
return soft_iface;
unreg_debugfs:
debugfs_del_meshif(soft_iface);
unreg_sysfs:
sysfs_del_meshif(soft_iface);
unreg_soft_iface:
@ -341,6 +340,7 @@ void softif_destroy(struct net_device *soft_iface)
{
debugfs_del_meshif(soft_iface);
sysfs_del_meshif(soft_iface);
mesh_free(soft_iface);
unregister_netdevice(soft_iface);
}

3
drivers/staging/batman-adv/soft-interface.h
View File

@ -22,7 +22,6 @@
#ifndef _NET_BATMAN_ADV_SOFT_INTERFACE_H_
#define _NET_BATMAN_ADV_SOFT_INTERFACE_H_
void set_main_if_addr(uint8_t *addr);
int my_skb_head_push(struct sk_buff *skb, unsigned int len);
int interface_tx(struct sk_buff *skb, struct net_device *soft_iface);
void interface_rx(struct net_device *soft_iface,
@ -30,6 +29,4 @@ void interface_rx(struct net_device *soft_iface,
struct net_device *softif_create(char *name);
void softif_destroy(struct net_device *soft_iface);
extern unsigned char main_if_addr[];
#endif /* _NET_BATMAN_ADV_SOFT_INTERFACE_H_ */

219
drivers/staging/batman-adv/translation-table.c
View File

@ -25,36 +25,29 @@
#include "types.h"
#include "hash.h"
struct hashtable_t *hna_local_hash;
static struct hashtable_t *hna_global_hash;
atomic_t hna_local_changed;
DEFINE_SPINLOCK(hna_local_hash_lock);
static DEFINE_SPINLOCK(hna_global_hash_lock);
static void hna_local_purge(struct work_struct *work);
static DECLARE_DELAYED_WORK(hna_local_purge_wq, hna_local_purge);
static void _hna_global_del_orig(struct bat_priv *bat_priv,
struct hna_global_entry *hna_global_entry,
char *message);
static void hna_local_start_timer(void)
static void hna_local_start_timer(struct bat_priv *bat_priv)
{
queue_delayed_work(bat_event_workqueue, &hna_local_purge_wq, 10 * HZ);
INIT_DELAYED_WORK(&bat_priv->hna_work, hna_local_purge);
queue_delayed_work(bat_event_workqueue, &bat_priv->hna_work, 10 * HZ);
}
int hna_local_init(void)
int hna_local_init(struct bat_priv *bat_priv)
{
if (hna_local_hash)
if (bat_priv->hna_local_hash)
return 1;
hna_local_hash = hash_new(128, compare_orig, choose_orig);
bat_priv->hna_local_hash = hash_new(128, compare_orig, choose_orig);
if (!hna_local_hash)
if (!bat_priv->hna_local_hash)
return 0;
atomic_set(&hna_local_changed, 0);
hna_local_start_timer();
atomic_set(&bat_priv->hna_local_changed, 0);
hna_local_start_timer(bat_priv);
return 1;
}
@ -67,12 +60,13 @@ void hna_local_add(struct net_device *soft_iface, uint8_t *addr)
struct hashtable_t *swaphash;
unsigned long flags;
spin_lock_irqsave(&hna_local_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
hna_local_entry =
((struct hna_local_entry *)hash_find(hna_local_hash, addr));
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
((struct hna_local_entry *)hash_find(bat_priv->hna_local_hash,
addr));
spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
if (hna_local_entry != NULL) {
if (hna_local_entry) {
hna_local_entry->last_seen = jiffies;
return;
}
@ -80,8 +74,9 @@ void hna_local_add(struct net_device *soft_iface, uint8_t *addr)
/* only announce as many hosts as possible in the batman-packet and
space in batman_packet->num_hna That also should give a limit to
MAC-flooding. */
if ((num_hna + 1 > (ETH_DATA_LEN - BAT_PACKET_LEN) / ETH_ALEN) ||
(num_hna + 1 > 255)) {
if ((bat_priv->num_local_hna + 1 > (ETH_DATA_LEN - BAT_PACKET_LEN)
/ ETH_ALEN) ||
(bat_priv->num_local_hna + 1 > 255)) {
bat_dbg(DBG_ROUTES, bat_priv,
"Can't add new local hna entry (%pM): "
"number of local hna entries exceeds packet size\n",
@ -105,47 +100,49 @@ void hna_local_add(struct net_device *soft_iface, uint8_t *addr)
else
hna_local_entry->never_purge = 0;
spin_lock_irqsave(&hna_local_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
hash_add(hna_local_hash, hna_local_entry);
num_hna++;
atomic_set(&hna_local_changed, 1);
hash_add(bat_priv->hna_local_hash, hna_local_entry);
bat_priv->num_local_hna++;
atomic_set(&bat_priv->hna_local_changed, 1);
if (hna_local_hash->elements * 4 > hna_local_hash->size) {
swaphash = hash_resize(hna_local_hash,
hna_local_hash->size * 2);
if (bat_priv->hna_local_hash->elements * 4 >
bat_priv->hna_local_hash->size) {
swaphash = hash_resize(bat_priv->hna_local_hash,
bat_priv->hna_local_hash->size * 2);
if (swaphash == NULL)
if (!swaphash)
pr_err("Couldn't resize local hna hash table\n");
else
hna_local_hash = swaphash;
bat_priv->hna_local_hash = swaphash;
}
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
/* remove address from global hash if present */
spin_lock_irqsave(&hna_global_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags);
hna_global_entry =
((struct hna_global_entry *)hash_find(hna_global_hash, addr));
hna_global_entry = ((struct hna_global_entry *)
hash_find(bat_priv->hna_global_hash, addr));
if (hna_global_entry != NULL)
if (hna_global_entry)
_hna_global_del_orig(bat_priv, hna_global_entry,
"local hna received");
spin_unlock_irqrestore(&hna_global_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags);
}
int hna_local_fill_buffer(unsigned char *buff, int buff_len)
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(&hna_local_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
while (hash_iterate(hna_local_hash, &hashit)) {
while (hash_iterate(bat_priv->hna_local_hash, &hashit)) {
if (buff_len < (i + 1) * ETH_ALEN)
break;
@ -157,11 +154,10 @@ int hna_local_fill_buffer(unsigned char *buff, int buff_len)
}
/* if we did not get all new local hnas see you next time ;-) */
if (i == num_hna)
atomic_set(&hna_local_changed, 0);
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
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;
}
@ -186,29 +182,29 @@ int hna_local_seq_print_text(struct seq_file *seq, void *offset)
"announced via HNA:\n",
net_dev->name);
spin_lock_irqsave(&hna_local_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
buf_size = 1;
/* Estimate length for: " * xx:xx:xx:xx:xx:xx\n" */
while (hash_iterate(hna_local_hash, &hashit_count))
while (hash_iterate(bat_priv->hna_local_hash, &hashit_count))
buf_size += 21;
buff = kmalloc(buf_size, GFP_ATOMIC);
if (!buff) {
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
return -ENOMEM;
}
buff[0] = '\0';
pos = 0;
while (hash_iterate(hna_local_hash, &hashit)) {
while (hash_iterate(bat_priv->hna_local_hash, &hashit)) {
hna_local_entry = hashit.bucket->data;
pos += snprintf(buff + pos, 22, " * %pM\n",
hna_local_entry->addr);
}
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
seq_printf(seq, "%s", buff);
kfree(buff);
@ -217,9 +213,11 @@ int hna_local_seq_print_text(struct seq_file *seq, void *offset)
static void _hna_local_del(void *data, void *arg)
{
struct bat_priv *bat_priv = (struct bat_priv *)arg;
kfree(data);
num_hna--;
atomic_set(&hna_local_changed, 1);
bat_priv->num_local_hna--;
atomic_set(&bat_priv->hna_local_changed, 1);
}
static void hna_local_del(struct bat_priv *bat_priv,
@ -229,7 +227,7 @@ static void hna_local_del(struct bat_priv *bat_priv,
bat_dbg(DBG_ROUTES, bat_priv, "Deleting local hna entry (%pM): %s\n",
hna_local_entry->addr, message);
hash_remove(hna_local_hash, hna_local_entry->addr);
hash_remove(bat_priv->hna_local_hash, hna_local_entry->addr);
_hna_local_del(hna_local_entry, bat_priv);
}
@ -239,57 +237,62 @@ void hna_local_remove(struct bat_priv *bat_priv,
struct hna_local_entry *hna_local_entry;
unsigned long flags;
spin_lock_irqsave(&hna_local_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
hna_local_entry = (struct hna_local_entry *)
hash_find(hna_local_hash, addr);
hash_find(bat_priv->hna_local_hash, addr);
if (hna_local_entry)
hna_local_del(bat_priv, hna_local_entry, message);
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
}
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(&hna_local_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
while (hash_iterate(hna_local_hash, &hashit)) {
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) &&
if ((!hna_local_entry->never_purge) &&
time_after(jiffies, timeout))
hna_local_del(bat_priv, hna_local_entry,
"address timed out");*/
"address timed out");
}
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
hna_local_start_timer();
spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
hna_local_start_timer(bat_priv);
}
void hna_local_free(void)
void hna_local_free(struct bat_priv *bat_priv)
{
if (!hna_local_hash)
if (!bat_priv->hna_local_hash)
return;
cancel_delayed_work_sync(&hna_local_purge_wq);
hash_delete(hna_local_hash, _hna_local_del, NULL);
hna_local_hash = NULL;
cancel_delayed_work_sync(&bat_priv->hna_work);
hash_delete(bat_priv->hna_local_hash, _hna_local_del, bat_priv);
bat_priv->hna_local_hash = NULL;
}
int hna_global_init(void)
int hna_global_init(struct bat_priv *bat_priv)
{
if (hna_global_hash)
if (bat_priv->hna_global_hash)
return 1;
hna_global_hash = hash_new(128, compare_orig, choose_orig);
bat_priv->hna_global_hash = hash_new(128, compare_orig, choose_orig);
if (!hna_global_hash)
if (!bat_priv->hna_global_hash)
return 0;
return 1;
@ -307,14 +310,15 @@ void hna_global_add_orig(struct bat_priv *bat_priv,
unsigned char *hna_ptr;
while ((hna_buff_count + 1) * ETH_ALEN <= hna_buff_len) {
spin_lock_irqsave(&hna_global_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags);
hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN);
hna_global_entry = (struct hna_global_entry *)
hash_find(hna_global_hash, hna_ptr);
hash_find(bat_priv->hna_global_hash, hna_ptr);
if (hna_global_entry == NULL) {
spin_unlock_irqrestore(&hna_global_hash_lock, flags);
if (!hna_global_entry) {
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock,
flags);
hna_global_entry =
kmalloc(sizeof(struct hna_global_entry),
@ -330,26 +334,26 @@ void hna_global_add_orig(struct bat_priv *bat_priv,
"%pM (via %pM)\n",
hna_global_entry->addr, orig_node->orig);
spin_lock_irqsave(&hna_global_hash_lock, flags);
hash_add(hna_global_hash, hna_global_entry);
spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags);
hash_add(bat_priv->hna_global_hash, hna_global_entry);
}
hna_global_entry->orig_node = orig_node;
spin_unlock_irqrestore(&hna_global_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags);
/* remove address from local hash if present */
spin_lock_irqsave(&hna_local_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags);
hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN);
hna_local_entry = (struct hna_local_entry *)
hash_find(hna_local_hash, hna_ptr);
hash_find(bat_priv->hna_local_hash, hna_ptr);
if (hna_local_entry != NULL)
if (hna_local_entry)
hna_local_del(bat_priv, hna_local_entry,
"global hna received");
spin_unlock_irqrestore(&hna_local_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags);
hna_buff_count++;
}
@ -366,19 +370,20 @@ void hna_global_add_orig(struct bat_priv *bat_priv,
}
}
spin_lock_irqsave(&hna_global_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags);
if (hna_global_hash->elements * 4 > hna_global_hash->size) {
swaphash = hash_resize(hna_global_hash,
hna_global_hash->size * 2);
if (bat_priv->hna_global_hash->elements * 4 >
bat_priv->hna_global_hash->size) {
swaphash = hash_resize(bat_priv->hna_global_hash,
bat_priv->hna_global_hash->size * 2);
if (swaphash == NULL)
if (!swaphash)
pr_err("Couldn't resize global hna hash table\n");
else
hna_global_hash = swaphash;
bat_priv->hna_global_hash = swaphash;
}
spin_unlock_irqrestore(&hna_global_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags);
}
int hna_global_seq_print_text(struct seq_file *seq, void *offset)
@ -401,22 +406,22 @@ int hna_global_seq_print_text(struct seq_file *seq, void *offset)
seq_printf(seq, "Globally announced HNAs received via the mesh %s\n",
net_dev->name);
spin_lock_irqsave(&hna_global_hash_lock, flags);
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(hna_global_hash, &hashit_count))
while (hash_iterate(bat_priv->hna_global_hash, &hashit_count))
buf_size += 43;
buff = kmalloc(buf_size, GFP_ATOMIC);
if (!buff) {
spin_unlock_irqrestore(&hna_global_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags);
return -ENOMEM;
}
buff[0] = '\0';
pos = 0;
while (hash_iterate(hna_global_hash, &hashit)) {
while (hash_iterate(bat_priv->hna_global_hash, &hashit)) {
hna_global_entry = hashit.bucket->data;
pos += snprintf(buff + pos, 44,
@ -424,7 +429,7 @@ int hna_global_seq_print_text(struct seq_file *seq, void *offset)
hna_global_entry->orig_node->orig);
}
spin_unlock_irqrestore(&hna_global_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags);
seq_printf(seq, "%s", buff);
kfree(buff);
@ -440,7 +445,7 @@ static void _hna_global_del_orig(struct bat_priv *bat_priv,
hna_global_entry->addr, hna_global_entry->orig_node->orig,
message);
hash_remove(hna_global_hash, hna_global_entry->addr);
hash_remove(bat_priv->hna_global_hash, hna_global_entry->addr);
kfree(hna_global_entry);
}
@ -455,14 +460,14 @@ void hna_global_del_orig(struct bat_priv *bat_priv,
if (orig_node->hna_buff_len == 0)
return;
spin_lock_irqsave(&hna_global_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags);
while ((hna_buff_count + 1) * ETH_ALEN <= orig_node->hna_buff_len) {
hna_ptr = orig_node->hna_buff + (hna_buff_count * ETH_ALEN);
hna_global_entry = (struct hna_global_entry *)
hash_find(hna_global_hash, hna_ptr);
hash_find(bat_priv->hna_global_hash, hna_ptr);
if ((hna_global_entry != NULL) &&
if ((hna_global_entry) &&
(hna_global_entry->orig_node == orig_node))
_hna_global_del_orig(bat_priv, hna_global_entry,
message);
@ -470,7 +475,7 @@ void hna_global_del_orig(struct bat_priv *bat_priv,
hna_buff_count++;
}
spin_unlock_irqrestore(&hna_global_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags);
orig_node->hna_buff_len = 0;
kfree(orig_node->hna_buff);
@ -482,26 +487,26 @@ static void hna_global_del(void *data, void *arg)
kfree(data);
}
void hna_global_free(void)
void hna_global_free(struct bat_priv *bat_priv)
{
if (!hna_global_hash)
if (!bat_priv->hna_global_hash)
return;
hash_delete(hna_global_hash, hna_global_del, NULL);
hna_global_hash = NULL;
hash_delete(bat_priv->hna_global_hash, hna_global_del, NULL);
bat_priv->hna_global_hash = NULL;
}
struct orig_node *transtable_search(uint8_t *addr)
struct orig_node *transtable_search(struct bat_priv *bat_priv, uint8_t *addr)
{
struct hna_global_entry *hna_global_entry;
unsigned long flags;
spin_lock_irqsave(&hna_global_hash_lock, flags);
spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags);
hna_global_entry = (struct hna_global_entry *)
hash_find(hna_global_hash, addr);
spin_unlock_irqrestore(&hna_global_hash_lock, flags);
hash_find(bat_priv->hna_global_hash, addr);
spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags);
if (hna_global_entry == NULL)
if (!hna_global_entry)
return NULL;
return hna_global_entry->orig_node;

17
drivers/staging/batman-adv/translation-table.h
View File

@ -24,25 +24,22 @@
#include "types.h"
int hna_local_init(void);
int hna_local_init(struct bat_priv *bat_priv);
void hna_local_add(struct net_device *soft_iface, uint8_t *addr);
void hna_local_remove(struct bat_priv *bat_priv,
uint8_t *addr, char *message);
int hna_local_fill_buffer(unsigned char *buff, int buff_len);
int hna_local_fill_buffer(struct bat_priv *bat_priv,
unsigned char *buff, int buff_len);
int hna_local_seq_print_text(struct seq_file *seq, void *offset);
void hna_local_free(void);
int hna_global_init(void);
void hna_local_free(struct bat_priv *bat_priv);
int hna_global_init(struct bat_priv *bat_priv);
void hna_global_add_orig(struct bat_priv *bat_priv,
struct orig_node *orig_node,
unsigned char *hna_buff, int hna_buff_len);
int hna_global_seq_print_text(struct seq_file *seq, void *offset);
void hna_global_del_orig(struct bat_priv *bat_priv,
struct orig_node *orig_node, char *message);
void hna_global_free(void);
struct orig_node *transtable_search(uint8_t *addr);
extern spinlock_t hna_local_hash_lock;
extern struct hashtable_t *hna_local_hash;
extern atomic_t hna_local_changed;
void hna_global_free(struct bat_priv *bat_priv);
struct orig_node *transtable_search(struct bat_priv *bat_priv, uint8_t *addr);
#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */

81
drivers/staging/batman-adv/types.h
View File

@ -51,18 +51,18 @@ struct batman_if {
};
/**
* orig_node - structure for orig_list maintaining nodes of mesh
* @primary_addr: hosts primary interface address
* @last_valid: when last packet from this node was received
* @bcast_seqno_reset: time when the broadcast seqno window was reset
* @batman_seqno_reset: time when the batman seqno window was reset
* @flags: for now only VIS_SERVER flag
* @last_real_seqno: last and best known squence number
* @last_ttl: ttl of last received packet
* @last_bcast_seqno: last broadcast sequence number received by this host
*
* @candidates: how many candidates are available
* @selected: next bonding candidate
* orig_node - structure for orig_list maintaining nodes of mesh
* @primary_addr: hosts primary interface address
* @last_valid: when last packet from this node was received
* @bcast_seqno_reset: time when the broadcast seqno window was reset
* @batman_seqno_reset: time when the batman seqno window was reset
* @flags: for now only VIS_SERVER flag
* @last_real_seqno: last and best known squence number
* @last_ttl: ttl of last received packet
* @last_bcast_seqno: last broadcast sequence number received by this host
*
* @candidates: how many candidates are available
* @selected: next bonding candidate
*/
struct orig_node {
uint8_t orig[ETH_ALEN];
@ -92,8 +92,8 @@ struct orig_node {
};
/**
* neigh_node
* @last_valid: when last packet via this neighbor was received
* neigh_node
* @last_valid: when last packet via this neighbor was received
*/
struct neigh_node {
struct list_head list;
@ -111,6 +111,7 @@ struct neigh_node {
};
struct bat_priv {
atomic_t mesh_state;
struct net_device_stats stats;
atomic_t aggregation_enabled;
atomic_t bonding_enabled;
@ -118,6 +119,7 @@ struct bat_priv {
atomic_t vis_mode;
atomic_t orig_interval;
atomic_t log_level;
atomic_t bcast_seqno;
atomic_t bcast_queue_left;
atomic_t batman_queue_left;
char num_ifaces;
@ -125,6 +127,29 @@ struct bat_priv {
struct batman_if *primary_if;
struct kobject *mesh_obj;
struct dentry *debug_dir;
struct hlist_head forw_bat_list;
struct hlist_head forw_bcast_list;
struct hlist_head gw_list;
struct list_head vis_send_list;
struct hashtable_t *orig_hash;
struct hashtable_t *hna_local_hash;
struct hashtable_t *hna_global_hash;
struct hashtable_t *vis_hash;
spinlock_t orig_hash_lock;
spinlock_t forw_bat_list_lock;
spinlock_t forw_bcast_list_lock;
spinlock_t hna_lhash_lock;
spinlock_t hna_ghash_lock;
spinlock_t gw_list_lock;
spinlock_t vis_hash_lock;
spinlock_t vis_list_lock;
int16_t num_local_hna;
atomic_t hna_local_changed;
struct delayed_work hna_work;
struct delayed_work orig_work;
struct delayed_work vis_work;
struct gw_node *curr_gw;
struct vis_info *my_vis_info;
};
struct socket_client {
@ -154,8 +179,8 @@ struct hna_global_entry {
};
/**
* forw_packet - structure for forw_list maintaining packets to be
* send/forwarded
* forw_packet - structure for forw_list maintaining packets to be
* send/forwarded
*/
struct forw_packet {
struct hlist_node list;
@ -193,4 +218,28 @@ struct frag_packet_list_entry {
struct sk_buff *skb;
};
struct vis_info {
unsigned long first_seen;
struct list_head recv_list;
/* list of server-neighbors we received a vis-packet
* from. we should not reply to them. */
struct list_head send_list;
struct kref refcount;
struct bat_priv *bat_priv;
/* this packet might be part of the vis send queue. */
struct sk_buff *skb_packet;
/* vis_info may follow here*/
} __attribute__((packed));
struct vis_info_entry {
uint8_t src[ETH_ALEN];
uint8_t dest[ETH_ALEN];
uint8_t quality; /* quality = 0 means HNA */
} __attribute__((packed));
struct recvlist_node {
struct list_head list;
uint8_t mac[ETH_ALEN];
};
#endif /* _NET_BATMAN_ADV_TYPES_H_ */

17
drivers/staging/batman-adv/unicast.c
View File

@ -34,7 +34,7 @@ struct sk_buff *merge_frag_packet(struct list_head *head,
struct sk_buff *skb)
{
struct unicast_frag_packet *up =
(struct unicast_frag_packet *) skb->data;
(struct unicast_frag_packet *)skb->data;
struct sk_buff *tmp_skb;
/* set skb to the first part and tmp_skb to the second part */
@ -66,7 +66,7 @@ void create_frag_entry(struct list_head *head, struct sk_buff *skb)
{
struct frag_packet_list_entry *tfp;
struct unicast_frag_packet *up =
(struct unicast_frag_packet *) skb->data;
(struct unicast_frag_packet *)skb->data;
/* free and oldest packets stand at the end */
tfp = list_entry((head)->prev, typeof(*tfp), list);
@ -115,7 +115,7 @@ struct frag_packet_list_entry *search_frag_packet(struct list_head *head,
if (tfp->seqno == ntohs(up->seqno))
goto mov_tail;
tmp_up = (struct unicast_frag_packet *) tfp->skb->data;
tmp_up = (struct unicast_frag_packet *)tfp->skb->data;
if (tfp->seqno == search_seqno) {
@ -210,14 +210,15 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv)
uint8_t dstaddr[6];
unsigned long flags;
spin_lock_irqsave(&orig_hash_lock, flags);
spin_lock_irqsave(&bat_priv->orig_hash_lock, flags);
/* get routing information */
orig_node = ((struct orig_node *)hash_find(orig_hash, ethhdr->h_dest));
orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
ethhdr->h_dest));
/* check for hna host */
if (!orig_node)
orig_node = transtable_search(ethhdr->h_dest);
orig_node = transtable_search(bat_priv, ethhdr->h_dest);
router = find_router(orig_node, NULL);
@ -230,7 +231,7 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv)
batman_if = router->if_incoming;
memcpy(dstaddr, router->addr, ETH_ALEN);
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
if (batman_if->if_status != IF_ACTIVE)
goto dropped;
@ -257,7 +258,7 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv)
return 0;
unlock:
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags);
dropped:
kfree_skb(skb);
return 1;

331
drivers/staging/batman-adv/vis.c
View File

@ -27,6 +27,8 @@
#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)))
@ -43,32 +45,25 @@
_dummy > smallest_signed_int(_dummy); })
#define seq_after(x, y) seq_before(y, x)
#define MAX_VIS_PACKET_SIZE 1000
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);
spin_unlock_irqrestore(&bat_priv->vis_list_lock, flags);
kfree_skb(info->skb_packet);
kfree(info);
}
/* Compare two vis packets, used by the hashing algorithm */
@ -207,8 +202,8 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
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 *)
@ -240,13 +235,13 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
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 *)
@ -285,7 +280,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
}
}
spin_unlock_irqrestore(&vis_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags);
seq_printf(seq, "%s", buff);
kfree(buff);
@ -295,11 +290,11 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
/* 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);
}
}
@ -314,7 +309,8 @@ static void send_list_del(struct vis_info *info)
}
/* 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;
@ -324,32 +320,35 @@ static void recv_list_add(struct list_head *recv_list, char *mac)
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)
{
@ -360,7 +359,7 @@ static struct vis_info *add_packet(struct vis_packet *vis_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 */
@ -371,15 +370,15 @@ static struct vis_info *add_packet(struct vis_packet *vis_packet,
sizeof(struct vis_packet));
memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN);
old_info = hash_find(vis_hash, &search_elem);
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_packet->seqno))) {
ntohl(old_packet->seqno))) {
if (old_packet->seqno == vis_packet->seqno) {
recv_list_add(&old_info->recv_list,
recv_list_add(bat_priv, &old_info->recv_list,
vis_packet->sender_orig);
return old_info;
} else {
@ -388,13 +387,13 @@ static struct vis_info *add_packet(struct vis_packet *vis_packet,
}
}
/* 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), GFP_ATOMIC);
if (info == NULL)
if (!info)
return NULL;
info->skb_packet = dev_alloc_skb(sizeof(struct vis_packet) +
@ -412,6 +411,7 @@ static struct vis_info *add_packet(struct vis_packet *vis_packet,
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(struct vis_packet) + vis_info_len);
/* initialize and add new packet. */
@ -425,10 +425,10 @@ static struct vis_info *add_packet(struct vis_packet *vis_packet,
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, 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;
@ -449,17 +449,18 @@ void receive_server_sync_packet(struct bat_priv *bat_priv,
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. */
@ -483,10 +484,11 @@ void receive_client_update_packet(struct bat_priv *bat_priv,
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);
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 == NULL)
if (!info)
goto end;
/* note that outdated packets will be dropped at this point. */
@ -495,22 +497,23 @@ void receive_client_update_packet(struct bat_priv *bat_priv,
/* 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(info);
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(info);
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;
@ -519,10 +522,9 @@ static int find_best_vis_server(struct vis_info *info)
packet = (struct vis_packet *)info->skb_packet->data;
while (hash_iterate(orig_hash, &hashit)) {
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;
@ -551,7 +553,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
HASHIT(hashit_local);
HASHIT(hashit_global);
struct orig_node *orig_node;
struct vis_info *info = (struct vis_info *)my_vis_info;
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;
@ -561,7 +563,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
info->first_seen = jiffies;
packet->vis_type = atomic_read(&bat_priv->vis_mode);
spin_lock_irqsave(&orig_hash_lock, flags);
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);
@ -569,43 +571,51 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
skb_trim(info->skb_packet, sizeof(struct vis_packet));
if (packet->vis_type == VIS_TYPE_CLIENT_UPDATE) {
best_tq = find_best_vis_server(info);
best_tq = find_best_vis_server(bat_priv, info);
if (best_tq < 0) {
spin_unlock_irqrestore(&orig_hash_lock, flags);
spin_unlock_irqrestore(&bat_priv->orig_hash_lock,
flags);
return -1;
}
}
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 = (struct vis_info_entry *)
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++;
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(&orig_hash_lock, flags);
return 0;
}
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 = (struct vis_info_entry *)skb_put(info->skb_packet,
sizeof(*entry));
@ -615,35 +625,41 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
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)
static void broadcast_vis_packet(struct bat_priv *bat_priv,
struct vis_info *info)
{
HASHIT(hashit);
struct orig_node *orig_node;
@ -653,11 +669,12 @@ static void broadcast_vis_packet(struct vis_info *info)
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. */
@ -667,26 +684,28 @@ static void broadcast_vis_packet(struct vis_info *info)
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(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);
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(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)
static void unicast_vis_packet(struct bat_priv *bat_priv,
struct vis_info *info)
{
struct orig_node *orig_node;
struct sk_buff *skb;
@ -695,9 +714,9 @@ static void unicast_vis_packet(struct vis_info *info)
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;
orig_node = ((struct orig_node *)hash_find(orig_hash,
orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
packet->target_orig));
if ((!orig_node) || (!orig_node->router))
@ -707,7 +726,7 @@ static void unicast_vis_packet(struct vis_info *info)
* 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)
@ -716,11 +735,11 @@ static void unicast_vis_packet(struct vis_info *info)
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)
{
struct vis_packet *packet;
@ -730,113 +749,120 @@ static void send_vis_packet(struct vis_info *info)
return;
}
memcpy(packet->sender_orig, main_if_addr, ETH_ALEN);
memcpy(packet->sender_orig, bat_priv->primary_if->net_dev->dev_addr,
ETH_ALEN);
packet->ttl--;
if (is_bcast(packet->target_orig))
broadcast_vis_packet(info);
broadcast_vis_packet(bat_priv, info);
else
unicast_vis_packet(info);
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;
/* struct bat_priv *bat_priv = netdev_priv(soft_device); */
spin_lock_irqsave(&vis_hash_lock, flags);
spin_lock_irqsave(&bat_priv->vis_hash_lock, flags);
purge_vis_packets(bat_priv);
purge_vis_packets();
/* if (generate_vis_packet(bat_priv) == 0) {*/
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(MAX_VIS_PACKET_SIZE, 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;
}
my_vis_info->skb_packet = dev_alloc_skb(sizeof(struct vis_packet) +
bat_priv->my_vis_info->skb_packet = dev_alloc_skb(
sizeof(struct vis_packet) +
MAX_VIS_PACKET_SIZE +
sizeof(struct ethhdr));
if (!my_vis_info->skb_packet)
if (!bat_priv->my_vis_info->skb_packet)
goto free_info;
skb_reserve(my_vis_info->skb_packet, sizeof(struct ethhdr));
packet = (struct vis_packet *)skb_put(my_vis_info->skb_packet,
sizeof(struct vis_packet));
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);
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(&send_list);
INIT_LIST_HEAD(&bat_priv->vis_send_list);
memcpy(packet->vis_orig, main_if_addr, ETH_ALEN);
memcpy(packet->sender_orig, main_if_addr, ETH_ALEN);
if (hash_add(vis_hash, my_vis_info) < 0) {
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(my_vis_info);
my_vis_info = NULL;
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;
}
@ -850,25 +876,26 @@ static void free_info_ref(void *data, void *arg)
}
/* 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, NULL);
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));
}

27
drivers/staging/batman-adv/vis.h
View File

@ -24,29 +24,6 @@
#define VIS_TIMEOUT 200 /* timeout of vis packets in seconds */
struct vis_info {
unsigned long first_seen;
struct list_head recv_list;
/* list of server-neighbors we received a vis-packet
* from. we should not reply to them. */
struct list_head send_list;
struct kref refcount;
/* this packet might be part of the vis send queue. */
struct sk_buff *skb_packet;
/* vis_info may follow here*/
} __attribute__((packed));
struct vis_info_entry {
uint8_t src[ETH_ALEN];
uint8_t dest[ETH_ALEN];
uint8_t quality; /* quality = 0 means HNA */
} __attribute__((packed));
struct recvlist_node {
struct list_head list;
uint8_t mac[ETH_ALEN];
};
int vis_seq_print_text(struct seq_file *seq, void *offset);
void receive_server_sync_packet(struct bat_priv *bat_priv,
struct vis_packet *vis_packet,
@ -54,7 +31,7 @@ void receive_server_sync_packet(struct bat_priv *bat_priv,
void receive_client_update_packet(struct bat_priv *bat_priv,
struct vis_packet *vis_packet,
int vis_info_len);
int vis_init(void);
void vis_quit(void);
int vis_init(struct bat_priv *bat_priv);
void vis_quit(struct bat_priv *bat_priv);
#endif /* _NET_BATMAN_ADV_VIS_H_ */