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path: root/net/batman-adv/hard-interface.c
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Diffstat (limited to 'net/batman-adv/hard-interface.c')
-rw-r--r--net/batman-adv/hard-interface.c420
1 files changed, 218 insertions, 202 deletions
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 4f95777ce080..b3058e46ee6b 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich
*
@@ -31,36 +31,40 @@
#include <linux/if_arp.h>
-/* protect update critical side of if_list - but not the content */
-static DEFINE_SPINLOCK(if_list_lock);
+/* protect update critical side of hardif_list - but not the content */
+static DEFINE_SPINLOCK(hardif_list_lock);
-static void hardif_free_rcu(struct rcu_head *rcu)
+
+static int batman_skb_recv(struct sk_buff *skb,
+ struct net_device *dev,
+ struct packet_type *ptype,
+ struct net_device *orig_dev);
+
+void hardif_free_rcu(struct rcu_head *rcu)
{
- struct batman_if *batman_if;
+ struct hard_iface *hard_iface;
- batman_if = container_of(rcu, struct batman_if, rcu);
- dev_put(batman_if->net_dev);
- kref_put(&batman_if->refcount, hardif_free_ref);
+ hard_iface = container_of(rcu, struct hard_iface, rcu);
+ dev_put(hard_iface->net_dev);
+ kfree(hard_iface);
}
-struct batman_if *get_batman_if_by_netdev(struct net_device *net_dev)
+struct hard_iface *hardif_get_by_netdev(struct net_device *net_dev)
{
- struct batman_if *batman_if;
+ struct hard_iface *hard_iface;
rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if (batman_if->net_dev == net_dev)
+ list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
+ if (hard_iface->net_dev == net_dev &&
+ atomic_inc_not_zero(&hard_iface->refcount))
goto out;
}
- batman_if = NULL;
+ hard_iface = NULL;
out:
- if (batman_if)
- kref_get(&batman_if->refcount);
-
rcu_read_unlock();
- return batman_if;
+ return hard_iface;
}
static int is_valid_iface(struct net_device *net_dev)
@@ -75,13 +79,8 @@ static int is_valid_iface(struct net_device *net_dev)
return 0;
/* no batman over batman */
-#ifdef HAVE_NET_DEVICE_OPS
- if (net_dev->netdev_ops->ndo_start_xmit == interface_tx)
- return 0;
-#else
- if (net_dev->hard_start_xmit == interface_tx)
+ if (softif_is_valid(net_dev))
return 0;
-#endif
/* Device is being bridged */
/* if (net_dev->priv_flags & IFF_BRIDGE_PORT)
@@ -90,27 +89,25 @@ static int is_valid_iface(struct net_device *net_dev)
return 1;
}
-static struct batman_if *get_active_batman_if(struct net_device *soft_iface)
+static struct hard_iface *hardif_get_active(struct net_device *soft_iface)
{
- struct batman_if *batman_if;
+ struct hard_iface *hard_iface;
rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if (batman_if->soft_iface != soft_iface)
+ list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
+ if (hard_iface->soft_iface != soft_iface)
continue;
- if (batman_if->if_status == IF_ACTIVE)
+ if (hard_iface->if_status == IF_ACTIVE &&
+ atomic_inc_not_zero(&hard_iface->refcount))
goto out;
}
- batman_if = NULL;
+ hard_iface = NULL;
out:
- if (batman_if)
- kref_get(&batman_if->refcount);
-
rcu_read_unlock();
- return batman_if;
+ return hard_iface;
}
static void update_primary_addr(struct bat_priv *bat_priv)
@@ -126,24 +123,24 @@ static void update_primary_addr(struct bat_priv *bat_priv)
}
static void set_primary_if(struct bat_priv *bat_priv,
- struct batman_if *batman_if)
+ struct hard_iface *hard_iface)
{
struct batman_packet *batman_packet;
- struct batman_if *old_if;
+ struct hard_iface *old_if;
- if (batman_if)
- kref_get(&batman_if->refcount);
+ if (hard_iface && !atomic_inc_not_zero(&hard_iface->refcount))
+ hard_iface = NULL;
old_if = bat_priv->primary_if;
- bat_priv->primary_if = batman_if;
+ bat_priv->primary_if = hard_iface;
if (old_if)
- kref_put(&old_if->refcount, hardif_free_ref);
+ hardif_free_ref(old_if);
if (!bat_priv->primary_if)
return;
- batman_packet = (struct batman_packet *)(batman_if->packet_buff);
+ batman_packet = (struct batman_packet *)(hard_iface->packet_buff);
batman_packet->flags = PRIMARIES_FIRST_HOP;
batman_packet->ttl = TTL;
@@ -156,42 +153,42 @@ static void set_primary_if(struct bat_priv *bat_priv,
atomic_set(&bat_priv->hna_local_changed, 1);
}
-static bool hardif_is_iface_up(struct batman_if *batman_if)
+static bool hardif_is_iface_up(struct hard_iface *hard_iface)
{
- if (batman_if->net_dev->flags & IFF_UP)
+ if (hard_iface->net_dev->flags & IFF_UP)
return true;
return false;
}
-static void update_mac_addresses(struct batman_if *batman_if)
+static void update_mac_addresses(struct hard_iface *hard_iface)
{
- memcpy(((struct batman_packet *)(batman_if->packet_buff))->orig,
- batman_if->net_dev->dev_addr, ETH_ALEN);
- memcpy(((struct batman_packet *)(batman_if->packet_buff))->prev_sender,
- batman_if->net_dev->dev_addr, ETH_ALEN);
+ memcpy(((struct batman_packet *)(hard_iface->packet_buff))->orig,
+ hard_iface->net_dev->dev_addr, ETH_ALEN);
+ memcpy(((struct batman_packet *)(hard_iface->packet_buff))->prev_sender,
+ hard_iface->net_dev->dev_addr, ETH_ALEN);
}
static void check_known_mac_addr(struct net_device *net_dev)
{
- struct batman_if *batman_if;
+ struct hard_iface *hard_iface;
rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if ((batman_if->if_status != IF_ACTIVE) &&
- (batman_if->if_status != IF_TO_BE_ACTIVATED))
+ list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
+ if ((hard_iface->if_status != IF_ACTIVE) &&
+ (hard_iface->if_status != IF_TO_BE_ACTIVATED))
continue;
- if (batman_if->net_dev == net_dev)
+ if (hard_iface->net_dev == net_dev)
continue;
- if (!compare_orig(batman_if->net_dev->dev_addr,
- net_dev->dev_addr))
+ if (!compare_eth(hard_iface->net_dev->dev_addr,
+ net_dev->dev_addr))
continue;
pr_warning("The newly added mac address (%pM) already exists "
"on: %s\n", net_dev->dev_addr,
- batman_if->net_dev->name);
+ hard_iface->net_dev->name);
pr_warning("It is strongly recommended to keep mac addresses "
"unique to avoid problems!\n");
}
@@ -201,7 +198,7 @@ static void check_known_mac_addr(struct net_device *net_dev)
int hardif_min_mtu(struct net_device *soft_iface)
{
struct bat_priv *bat_priv = netdev_priv(soft_iface);
- struct batman_if *batman_if;
+ struct hard_iface *hard_iface;
/* allow big frames if all devices are capable to do so
* (have MTU > 1500 + BAT_HEADER_LEN) */
int min_mtu = ETH_DATA_LEN;
@@ -210,15 +207,15 @@ int hardif_min_mtu(struct net_device *soft_iface)
goto out;
rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if ((batman_if->if_status != IF_ACTIVE) &&
- (batman_if->if_status != IF_TO_BE_ACTIVATED))
+ list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
+ if ((hard_iface->if_status != IF_ACTIVE) &&
+ (hard_iface->if_status != IF_TO_BE_ACTIVATED))
continue;
- if (batman_if->soft_iface != soft_iface)
+ if (hard_iface->soft_iface != soft_iface)
continue;
- min_mtu = min_t(int, batman_if->net_dev->mtu - BAT_HEADER_LEN,
+ min_mtu = min_t(int, hard_iface->net_dev->mtu - BAT_HEADER_LEN,
min_mtu);
}
rcu_read_unlock();
@@ -236,77 +233,95 @@ void update_min_mtu(struct net_device *soft_iface)
soft_iface->mtu = min_mtu;
}
-static void hardif_activate_interface(struct batman_if *batman_if)
+static void hardif_activate_interface(struct hard_iface *hard_iface)
{
struct bat_priv *bat_priv;
- if (batman_if->if_status != IF_INACTIVE)
+ if (hard_iface->if_status != IF_INACTIVE)
return;
- bat_priv = netdev_priv(batman_if->soft_iface);
+ bat_priv = netdev_priv(hard_iface->soft_iface);
- update_mac_addresses(batman_if);
- batman_if->if_status = IF_TO_BE_ACTIVATED;
+ update_mac_addresses(hard_iface);
+ hard_iface->if_status = IF_TO_BE_ACTIVATED;
/**
* the first active interface becomes our primary interface or
* the next active interface after the old primay interface was removed
*/
if (!bat_priv->primary_if)
- set_primary_if(bat_priv, batman_if);
+ set_primary_if(bat_priv, hard_iface);
- bat_info(batman_if->soft_iface, "Interface activated: %s\n",
- batman_if->net_dev->name);
+ bat_info(hard_iface->soft_iface, "Interface activated: %s\n",
+ hard_iface->net_dev->name);
- update_min_mtu(batman_if->soft_iface);
+ update_min_mtu(hard_iface->soft_iface);
return;
}
-static void hardif_deactivate_interface(struct batman_if *batman_if)
+static void hardif_deactivate_interface(struct hard_iface *hard_iface)
{
- if ((batman_if->if_status != IF_ACTIVE) &&
- (batman_if->if_status != IF_TO_BE_ACTIVATED))
+ if ((hard_iface->if_status != IF_ACTIVE) &&
+ (hard_iface->if_status != IF_TO_BE_ACTIVATED))
return;
- batman_if->if_status = IF_INACTIVE;
+ hard_iface->if_status = IF_INACTIVE;
- bat_info(batman_if->soft_iface, "Interface deactivated: %s\n",
- batman_if->net_dev->name);
+ bat_info(hard_iface->soft_iface, "Interface deactivated: %s\n",
+ hard_iface->net_dev->name);
- update_min_mtu(batman_if->soft_iface);
+ update_min_mtu(hard_iface->soft_iface);
}
-int hardif_enable_interface(struct batman_if *batman_if, char *iface_name)
+int hardif_enable_interface(struct hard_iface *hard_iface, char *iface_name)
{
struct bat_priv *bat_priv;
struct batman_packet *batman_packet;
+ struct net_device *soft_iface;
+ int ret;
- if (batman_if->if_status != IF_NOT_IN_USE)
+ if (hard_iface->if_status != IF_NOT_IN_USE)
goto out;
- batman_if->soft_iface = dev_get_by_name(&init_net, iface_name);
+ if (!atomic_inc_not_zero(&hard_iface->refcount))
+ goto out;
- if (!batman_if->soft_iface) {
- batman_if->soft_iface = softif_create(iface_name);
+ soft_iface = dev_get_by_name(&init_net, iface_name);
- if (!batman_if->soft_iface)
+ if (!soft_iface) {
+ soft_iface = softif_create(iface_name);
+
+ if (!soft_iface) {
+ ret = -ENOMEM;
goto err;
+ }
/* dev_get_by_name() increases the reference counter for us */
- dev_hold(batman_if->soft_iface);
+ dev_hold(soft_iface);
+ }
+
+ if (!softif_is_valid(soft_iface)) {
+ pr_err("Can't create batman mesh interface %s: "
+ "already exists as regular interface\n",
+ soft_iface->name);
+ dev_put(soft_iface);
+ ret = -EINVAL;
+ goto err;
}
- bat_priv = netdev_priv(batman_if->soft_iface);
- batman_if->packet_len = BAT_PACKET_LEN;
- batman_if->packet_buff = kmalloc(batman_if->packet_len, GFP_ATOMIC);
+ hard_iface->soft_iface = soft_iface;
+ bat_priv = netdev_priv(hard_iface->soft_iface);
+ hard_iface->packet_len = BAT_PACKET_LEN;
+ hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
- if (!batman_if->packet_buff) {
- bat_err(batman_if->soft_iface, "Can't add interface packet "
- "(%s): out of memory\n", batman_if->net_dev->name);
+ if (!hard_iface->packet_buff) {
+ bat_err(hard_iface->soft_iface, "Can't add interface packet "
+ "(%s): out of memory\n", hard_iface->net_dev->name);
+ ret = -ENOMEM;
goto err;
}
- batman_packet = (struct batman_packet *)(batman_if->packet_buff);
+ batman_packet = (struct batman_packet *)(hard_iface->packet_buff);
batman_packet->packet_type = BAT_PACKET;
batman_packet->version = COMPAT_VERSION;
batman_packet->flags = 0;
@@ -314,107 +329,107 @@ int hardif_enable_interface(struct batman_if *batman_if, char *iface_name)
batman_packet->tq = TQ_MAX_VALUE;
batman_packet->num_hna = 0;
- batman_if->if_num = bat_priv->num_ifaces;
+ hard_iface->if_num = bat_priv->num_ifaces;
bat_priv->num_ifaces++;
- batman_if->if_status = IF_INACTIVE;
- orig_hash_add_if(batman_if, bat_priv->num_ifaces);
+ hard_iface->if_status = IF_INACTIVE;
+ orig_hash_add_if(hard_iface, bat_priv->num_ifaces);
- batman_if->batman_adv_ptype.type = __constant_htons(ETH_P_BATMAN);
- batman_if->batman_adv_ptype.func = batman_skb_recv;
- batman_if->batman_adv_ptype.dev = batman_if->net_dev;
- kref_get(&batman_if->refcount);
- dev_add_pack(&batman_if->batman_adv_ptype);
+ hard_iface->batman_adv_ptype.type = __constant_htons(ETH_P_BATMAN);
+ hard_iface->batman_adv_ptype.func = batman_skb_recv;
+ hard_iface->batman_adv_ptype.dev = hard_iface->net_dev;
+ dev_add_pack(&hard_iface->batman_adv_ptype);
- atomic_set(&batman_if->seqno, 1);
- atomic_set(&batman_if->frag_seqno, 1);
- bat_info(batman_if->soft_iface, "Adding interface: %s\n",
- batman_if->net_dev->name);
+ atomic_set(&hard_iface->seqno, 1);
+ atomic_set(&hard_iface->frag_seqno, 1);
+ bat_info(hard_iface->soft_iface, "Adding interface: %s\n",
+ hard_iface->net_dev->name);
- if (atomic_read(&bat_priv->fragmentation) && batman_if->net_dev->mtu <
+ if (atomic_read(&bat_priv->fragmentation) && hard_iface->net_dev->mtu <
ETH_DATA_LEN + BAT_HEADER_LEN)
- bat_info(batman_if->soft_iface,
+ bat_info(hard_iface->soft_iface,
"The MTU of interface %s is too small (%i) to handle "
"the transport of batman-adv packets. Packets going "
"over this interface will be fragmented on layer2 "
"which could impact the performance. Setting the MTU "
"to %zi would solve the problem.\n",
- batman_if->net_dev->name, batman_if->net_dev->mtu,
+ hard_iface->net_dev->name, hard_iface->net_dev->mtu,
ETH_DATA_LEN + BAT_HEADER_LEN);
- if (!atomic_read(&bat_priv->fragmentation) && batman_if->net_dev->mtu <
+ if (!atomic_read(&bat_priv->fragmentation) && hard_iface->net_dev->mtu <
ETH_DATA_LEN + BAT_HEADER_LEN)
- bat_info(batman_if->soft_iface,
+ bat_info(hard_iface->soft_iface,
"The MTU of interface %s is too small (%i) to handle "
"the transport of batman-adv packets. If you experience"
" problems getting traffic through try increasing the "
"MTU to %zi.\n",
- batman_if->net_dev->name, batman_if->net_dev->mtu,
+ hard_iface->net_dev->name, hard_iface->net_dev->mtu,
ETH_DATA_LEN + BAT_HEADER_LEN);
- if (hardif_is_iface_up(batman_if))
- hardif_activate_interface(batman_if);
+ if (hardif_is_iface_up(hard_iface))
+ hardif_activate_interface(hard_iface);
else
- bat_err(batman_if->soft_iface, "Not using interface %s "
+ bat_err(hard_iface->soft_iface, "Not using interface %s "
"(retrying later): interface not active\n",
- batman_if->net_dev->name);
+ hard_iface->net_dev->name);
/* begin scheduling originator messages on that interface */
- schedule_own_packet(batman_if);
+ schedule_own_packet(hard_iface);
out:
return 0;
err:
- return -ENOMEM;
+ hardif_free_ref(hard_iface);
+ return ret;
}
-void hardif_disable_interface(struct batman_if *batman_if)
+void hardif_disable_interface(struct hard_iface *hard_iface)
{
- struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
+ struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
- if (batman_if->if_status == IF_ACTIVE)
- hardif_deactivate_interface(batman_if);
+ if (hard_iface->if_status == IF_ACTIVE)
+ hardif_deactivate_interface(hard_iface);
- if (batman_if->if_status != IF_INACTIVE)
+ if (hard_iface->if_status != IF_INACTIVE)
return;
- bat_info(batman_if->soft_iface, "Removing interface: %s\n",
- batman_if->net_dev->name);
- dev_remove_pack(&batman_if->batman_adv_ptype);
- kref_put(&batman_if->refcount, hardif_free_ref);
+ bat_info(hard_iface->soft_iface, "Removing interface: %s\n",
+ hard_iface->net_dev->name);
+ dev_remove_pack(&hard_iface->batman_adv_ptype);
bat_priv->num_ifaces--;
- orig_hash_del_if(batman_if, bat_priv->num_ifaces);
+ orig_hash_del_if(hard_iface, bat_priv->num_ifaces);
- if (batman_if == bat_priv->primary_if) {
- struct batman_if *new_if;
+ if (hard_iface == bat_priv->primary_if) {
+ struct hard_iface *new_if;
- new_if = get_active_batman_if(batman_if->soft_iface);
+ new_if = hardif_get_active(hard_iface->soft_iface);
set_primary_if(bat_priv, new_if);
if (new_if)
- kref_put(&new_if->refcount, hardif_free_ref);
+ hardif_free_ref(new_if);
}
- kfree(batman_if->packet_buff);
- batman_if->packet_buff = NULL;
- batman_if->if_status = IF_NOT_IN_USE;
+ kfree(hard_iface->packet_buff);
+ hard_iface->packet_buff = NULL;
+ hard_iface->if_status = IF_NOT_IN_USE;
- /* delete all references to this batman_if */
+ /* delete all references to this hard_iface */
purge_orig_ref(bat_priv);
- purge_outstanding_packets(bat_priv, batman_if);
- dev_put(batman_if->soft_iface);
+ purge_outstanding_packets(bat_priv, hard_iface);
+ dev_put(hard_iface->soft_iface);
/* nobody uses this interface anymore */
if (!bat_priv->num_ifaces)
- softif_destroy(batman_if->soft_iface);
+ softif_destroy(hard_iface->soft_iface);
- batman_if->soft_iface = NULL;
+ hard_iface->soft_iface = NULL;
+ hardif_free_ref(hard_iface);
}
-static struct batman_if *hardif_add_interface(struct net_device *net_dev)
+static struct hard_iface *hardif_add_interface(struct net_device *net_dev)
{
- struct batman_if *batman_if;
+ struct hard_iface *hard_iface;
int ret;
ret = is_valid_iface(net_dev);
@@ -423,73 +438,73 @@ static struct batman_if *hardif_add_interface(struct net_device *net_dev)
dev_hold(net_dev);
- batman_if = kmalloc(sizeof(struct batman_if), GFP_ATOMIC);
- if (!batman_if) {
+ hard_iface = kmalloc(sizeof(struct hard_iface), GFP_ATOMIC);
+ if (!hard_iface) {
pr_err("Can't add interface (%s): out of memory\n",
net_dev->name);
goto release_dev;
}
- ret = sysfs_add_hardif(&batman_if->hardif_obj, net_dev);
+ ret = sysfs_add_hardif(&hard_iface->hardif_obj, net_dev);
if (ret)
goto free_if;
- batman_if->if_num = -1;
- batman_if->net_dev = net_dev;
- batman_if->soft_iface = NULL;
- batman_if->if_status = IF_NOT_IN_USE;
- INIT_LIST_HEAD(&batman_if->list);
- kref_init(&batman_if->refcount);
+ hard_iface->if_num = -1;
+ hard_iface->net_dev = net_dev;
+ hard_iface->soft_iface = NULL;
+ hard_iface->if_status = IF_NOT_IN_USE;
+ INIT_LIST_HEAD(&hard_iface->list);
+ /* extra reference for return */
+ atomic_set(&hard_iface->refcount, 2);
- check_known_mac_addr(batman_if->net_dev);
+ check_known_mac_addr(hard_iface->net_dev);
- spin_lock(&if_list_lock);
- list_add_tail_rcu(&batman_if->list, &if_list);
- spin_unlock(&if_list_lock);
+ spin_lock(&hardif_list_lock);
+ list_add_tail_rcu(&hard_iface->list, &hardif_list);
+ spin_unlock(&hardif_list_lock);
- /* extra reference for return */
- kref_get(&batman_if->refcount);
- return batman_if;
+ return hard_iface;
free_if:
- kfree(batman_if);
+ kfree(hard_iface);
release_dev:
dev_put(net_dev);
out:
return NULL;
}
-static void hardif_remove_interface(struct batman_if *batman_if)
+static void hardif_remove_interface(struct hard_iface *hard_iface)
{
/* first deactivate interface */
- if (batman_if->if_status != IF_NOT_IN_USE)
- hardif_disable_interface(batman_if);
+ if (hard_iface->if_status != IF_NOT_IN_USE)
+ hardif_disable_interface(hard_iface);
- if (batman_if->if_status != IF_NOT_IN_USE)
+ if (hard_iface->if_status != IF_NOT_IN_USE)
return;
- batman_if->if_status = IF_TO_BE_REMOVED;
- sysfs_del_hardif(&batman_if->hardif_obj);
- call_rcu(&batman_if->rcu, hardif_free_rcu);
+ hard_iface->if_status = IF_TO_BE_REMOVED;
+ sysfs_del_hardif(&hard_iface->hardif_obj);
+ hardif_free_ref(hard_iface);
}
void hardif_remove_interfaces(void)
{
- struct batman_if *batman_if, *batman_if_tmp;
+ struct hard_iface *hard_iface, *hard_iface_tmp;
struct list_head if_queue;
INIT_LIST_HEAD(&if_queue);
- spin_lock(&if_list_lock);
- list_for_each_entry_safe(batman_if, batman_if_tmp, &if_list, list) {
- list_del_rcu(&batman_if->list);
- list_add_tail(&batman_if->list, &if_queue);
+ spin_lock(&hardif_list_lock);
+ list_for_each_entry_safe(hard_iface, hard_iface_tmp,
+ &hardif_list, list) {
+ list_del_rcu(&hard_iface->list);
+ list_add_tail(&hard_iface->list, &if_queue);
}
- spin_unlock(&if_list_lock);
+ spin_unlock(&hardif_list_lock);
rtnl_lock();
- list_for_each_entry_safe(batman_if, batman_if_tmp, &if_queue, list) {
- hardif_remove_interface(batman_if);
+ list_for_each_entry_safe(hard_iface, hard_iface_tmp, &if_queue, list) {
+ hardif_remove_interface(hard_iface);
}
rtnl_unlock();
}
@@ -498,43 +513,43 @@ static int hard_if_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct net_device *net_dev = (struct net_device *)ptr;
- struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
+ struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
struct bat_priv *bat_priv;
- if (!batman_if && event == NETDEV_REGISTER)
- batman_if = hardif_add_interface(net_dev);
+ if (!hard_iface && event == NETDEV_REGISTER)
+ hard_iface = hardif_add_interface(net_dev);
- if (!batman_if)
+ if (!hard_iface)
goto out;
switch (event) {
case NETDEV_UP:
- hardif_activate_interface(batman_if);
+ hardif_activate_interface(hard_iface);
break;
case NETDEV_GOING_DOWN:
case NETDEV_DOWN:
- hardif_deactivate_interface(batman_if);
+ hardif_deactivate_interface(hard_iface);
break;
case NETDEV_UNREGISTER:
- spin_lock(&if_list_lock);
- list_del_rcu(&batman_if->list);
- spin_unlock(&if_list_lock);
+ spin_lock(&hardif_list_lock);
+ list_del_rcu(&hard_iface->list);
+ spin_unlock(&hardif_list_lock);
- hardif_remove_interface(batman_if);
+ hardif_remove_interface(hard_iface);
break;
case NETDEV_CHANGEMTU:
- if (batman_if->soft_iface)
- update_min_mtu(batman_if->soft_iface);
+ if (hard_iface->soft_iface)
+ update_min_mtu(hard_iface->soft_iface);
break;
case NETDEV_CHANGEADDR:
- if (batman_if->if_status == IF_NOT_IN_USE)
+ if (hard_iface->if_status == IF_NOT_IN_USE)
goto hardif_put;
- check_known_mac_addr(batman_if->net_dev);
- update_mac_addresses(batman_if);
+ check_known_mac_addr(hard_iface->net_dev);
+ update_mac_addresses(hard_iface);
- bat_priv = netdev_priv(batman_if->soft_iface);
- if (batman_if == bat_priv->primary_if)
+ bat_priv = netdev_priv(hard_iface->soft_iface);
+ if (hard_iface == bat_priv->primary_if)
update_primary_addr(bat_priv);
break;
default:
@@ -542,22 +557,23 @@ static int hard_if_event(struct notifier_block *this,
};
hardif_put:
- kref_put(&batman_if->refcount, hardif_free_ref);
+ hardif_free_ref(hard_iface);
out:
return NOTIFY_DONE;
}
/* receive a packet with the batman ethertype coming on a hard
* interface */
-int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *ptype, struct net_device *orig_dev)
+static int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *ptype,
+ struct net_device *orig_dev)
{
struct bat_priv *bat_priv;
struct batman_packet *batman_packet;
- struct batman_if *batman_if;
+ struct hard_iface *hard_iface;
int ret;
- batman_if = container_of(ptype, struct batman_if, batman_adv_ptype);
+ hard_iface = container_of(ptype, struct hard_iface, batman_adv_ptype);
skb = skb_share_check(skb, GFP_ATOMIC);
/* skb was released by skb_share_check() */
@@ -573,16 +589,16 @@ int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
|| !skb_mac_header(skb)))
goto err_free;
- if (!batman_if->soft_iface)
+ if (!hard_iface->soft_iface)
goto err_free;
- bat_priv = netdev_priv(batman_if->soft_iface);
+ bat_priv = netdev_priv(hard_iface->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)
+ if (hard_iface->if_status != IF_ACTIVE)
goto err_free;
batman_packet = (struct batman_packet *)skb->data;
@@ -600,32 +616,32 @@ int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
switch (batman_packet->packet_type) {
/* batman originator packet */
case BAT_PACKET:
- ret = recv_bat_packet(skb, batman_if);
+ ret = recv_bat_packet(skb, hard_iface);
break;
/* batman icmp packet */
case BAT_ICMP:
- ret = recv_icmp_packet(skb, batman_if);
+ ret = recv_icmp_packet(skb, hard_iface);
break;
/* unicast packet */
case BAT_UNICAST:
- ret = recv_unicast_packet(skb, batman_if);
+ ret = recv_unicast_packet(skb, hard_iface);
break;
/* fragmented unicast packet */
case BAT_UNICAST_FRAG:
- ret = recv_ucast_frag_packet(skb, batman_if);
+ ret = recv_ucast_frag_packet(skb, hard_iface);
break;
/* broadcast packet */
case BAT_BCAST:
- ret = recv_bcast_packet(skb, batman_if);
+ ret = recv_bcast_packet(skb, hard_iface);
break;
/* vis packet */
case BAT_VIS:
- ret = recv_vis_packet(skb, batman_if);
+ ret = recv_vis_packet(skb, hard_iface);
break;
default:
ret = NET_RX_DROP;