-/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2015 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich, Antonio Quartulli
*
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#include "main.h"
#include "translation-table.h"
-#include "soft-interface.h"
+#include "main.h"
+
+#include <linux/atomic.h>
+#include <linux/bitops.h>
+#include <linux/bug.h>
+#include <linux/byteorder/generic.h>
+#include <linux/compiler.h>
+#include <linux/crc32c.h>
+#include <linux/errno.h>
+#include <linux/etherdevice.h>
+#include <linux/fs.h>
+#include <linux/if_ether.h>
+#include <linux/jhash.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/lockdep.h>
+#include <linux/netdevice.h>
+#include <linux/rculist.h>
+#include <linux/rcupdate.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/stddef.h>
+#include <linux/string.h>
+#include <linux/workqueue.h>
+#include <net/net_namespace.h>
+
+#include "bridge_loop_avoidance.h"
#include "hard-interface.h"
-#include "send.h"
#include "hash.h"
-#include "originator.h"
-#include "routing.h"
-#include "bridge_loop_avoidance.h"
#include "multicast.h"
-
-#include <linux/crc32c.h>
+#include "originator.h"
+#include "packet.h"
+#include "soft-interface.h"
/* hash class keys */
static struct lock_class_key batadv_tt_local_hash_lock_class_key;
static struct lock_class_key batadv_tt_global_hash_lock_class_key;
-static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
+static void batadv_send_roam_adv(struct batadv_priv *bat_priv, u8 *client,
unsigned short vid,
struct batadv_orig_node *orig_node);
static void batadv_tt_purge(struct work_struct *work);
unsigned short vid, const char *message,
bool roaming);
-/* returns 1 if they are the same mac addr */
+/* returns 1 if they are the same mac addr and vid */
static int batadv_compare_tt(const struct hlist_node *node, const void *data2)
{
const void *data1 = container_of(node, struct batadv_tt_common_entry,
hash_entry);
+ const struct batadv_tt_common_entry *tt1 = data1;
+ const struct batadv_tt_common_entry *tt2 = data2;
- return batadv_compare_eth(data1, data2);
+ return (tt1->vid == tt2->vid) && batadv_compare_eth(data1, data2);
}
/**
* Returns the hash index where the object represented by 'data' should be
* stored at.
*/
-static inline uint32_t batadv_choose_tt(const void *data, uint32_t size)
+static inline u32 batadv_choose_tt(const void *data, u32 size)
{
struct batadv_tt_common_entry *tt;
- uint32_t hash = 0;
+ u32 hash = 0;
tt = (struct batadv_tt_common_entry *)data;
- hash = batadv_hash_bytes(hash, &tt->addr, ETH_ALEN);
- hash = batadv_hash_bytes(hash, &tt->vid, sizeof(tt->vid));
-
- hash += (hash << 3);
- hash ^= (hash >> 11);
- hash += (hash << 15);
+ hash = jhash(&tt->addr, ETH_ALEN, hash);
+ hash = jhash(&tt->vid, sizeof(tt->vid), hash);
return hash % size;
}
* found, NULL otherwise.
*/
static struct batadv_tt_common_entry *
-batadv_tt_hash_find(struct batadv_hashtable *hash, const uint8_t *addr,
+batadv_tt_hash_find(struct batadv_hashtable *hash, const u8 *addr,
unsigned short vid)
{
struct hlist_head *head;
struct batadv_tt_common_entry to_search, *tt, *tt_tmp = NULL;
- uint32_t index;
+ u32 index;
if (!hash)
return NULL;
* found, NULL otherwise.
*/
static struct batadv_tt_local_entry *
-batadv_tt_local_hash_find(struct batadv_priv *bat_priv, const uint8_t *addr,
+batadv_tt_local_hash_find(struct batadv_priv *bat_priv, const u8 *addr,
unsigned short vid)
{
struct batadv_tt_common_entry *tt_common_entry;
* is found, NULL otherwise.
*/
static struct batadv_tt_global_entry *
-batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const uint8_t *addr,
+batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const u8 *addr,
unsigned short vid)
{
struct batadv_tt_common_entry *tt_common_entry;
* (excluding ourself).
*/
int batadv_tt_global_hash_count(struct batadv_priv *bat_priv,
- const uint8_t *addr, unsigned short vid)
+ const u8 *addr, unsigned short vid)
{
struct batadv_tt_global_entry *tt_global_entry;
int count;
return count;
}
-static void batadv_tt_orig_list_entry_free_rcu(struct rcu_head *rcu)
-{
- struct batadv_tt_orig_list_entry *orig_entry;
-
- orig_entry = container_of(rcu, struct batadv_tt_orig_list_entry, rcu);
-
- /* We are in an rcu callback here, therefore we cannot use
- * batadv_orig_node_free_ref() and its call_rcu():
- * An rcu_barrier() wouldn't wait for that to finish
- */
- batadv_orig_node_free_ref_now(orig_entry->orig_node);
- kfree(orig_entry);
-}
-
/**
* batadv_tt_local_size_mod - change the size by v of the local table identified
* by vid
if (atomic_add_return(v, &vlan->tt.num_entries) == 0) {
spin_lock_bh(&orig_node->vlan_list_lock);
- list_del_rcu(&vlan->list);
+ hlist_del_init_rcu(&vlan->list);
spin_unlock_bh(&orig_node->vlan_list_lock);
batadv_orig_node_vlan_free_ref(vlan);
}
batadv_tt_global_size_mod(orig_node, vid, -1);
}
+/**
+ * batadv_tt_orig_list_entry_release - release tt orig entry from lists and
+ * queue for free after rcu grace period
+ * @orig_entry: tt orig entry to be free'd
+ */
+static void
+batadv_tt_orig_list_entry_release(struct batadv_tt_orig_list_entry *orig_entry)
+{
+ batadv_orig_node_free_ref(orig_entry->orig_node);
+ kfree_rcu(orig_entry, rcu);
+}
+
static void
batadv_tt_orig_list_entry_free_ref(struct batadv_tt_orig_list_entry *orig_entry)
{
if (!atomic_dec_and_test(&orig_entry->refcount))
return;
- call_rcu(&orig_entry->rcu, batadv_tt_orig_list_entry_free_rcu);
+ batadv_tt_orig_list_entry_release(orig_entry);
}
/**
*/
static void batadv_tt_local_event(struct batadv_priv *bat_priv,
struct batadv_tt_local_entry *tt_local_entry,
- uint8_t event_flags)
+ u8 event_flags)
{
struct batadv_tt_change_node *tt_change_node, *entry, *safe;
struct batadv_tt_common_entry *common = &tt_local_entry->common;
- uint8_t flags = common->flags | event_flags;
+ u8 flags = common->flags | event_flags;
bool event_removed = false;
bool del_op_requested, del_op_entry;
*
* Returns the number of entries.
*/
-static uint16_t batadv_tt_entries(uint16_t tt_len)
+static u16 batadv_tt_entries(u16 tt_len)
{
return tt_len / batadv_tt_len(1);
}
*/
static int batadv_tt_local_table_transmit_size(struct batadv_priv *bat_priv)
{
- uint16_t num_vlan = 0, tt_local_entries = 0;
+ u16 num_vlan = 0;
+ u16 tt_local_entries = 0;
struct batadv_softif_vlan *vlan;
int hdr_size;
*
* Returns true if the client was successfully added, false otherwise.
*/
-bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
- unsigned short vid, int ifindex, uint32_t mark)
+bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr,
+ unsigned short vid, int ifindex, u32 mark)
{
struct batadv_priv *bat_priv = netdev_priv(soft_iface);
struct batadv_tt_local_entry *tt_local;
struct hlist_head *head;
struct batadv_tt_orig_list_entry *orig_entry;
int hash_added, table_size, packet_size_max;
- bool ret = false, roamed_back = false;
- uint8_t remote_flags;
- uint32_t match_mark;
+ bool ret = false;
+ bool roamed_back = false;
+ u8 remote_flags;
+ u32 match_mark;
if (ifindex != BATADV_NULL_IFINDEX)
in_dev = dev_get_by_index(&init_net, ifindex);
/* increase the refcounter of the related vlan */
vlan = batadv_softif_vlan_get(bat_priv, vid);
+ if (WARN(!vlan, "adding TT local entry %pM to non-existent VLAN %d",
+ addr, BATADV_PRINT_VID(vid))) {
+ kfree(tt_local);
+ tt_local = NULL;
+ goto out;
+ }
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Creating new local tt entry: %pM (vid: %d, ttvn: %d)\n",
addr, BATADV_PRINT_VID(vid),
- (uint8_t)atomic_read(&bat_priv->tt.vn));
+ (u8)atomic_read(&bat_priv->tt.vn));
ether_addr_copy(tt_local->common.addr, addr);
/* The local entry has to be marked as NEW to avoid to send it in
*
* Return the size of the allocated buffer or 0 in case of failure.
*/
-static uint16_t
+static u16
batadv_tt_prepare_tvlv_global_data(struct batadv_orig_node *orig_node,
struct batadv_tvlv_tt_data **tt_data,
struct batadv_tvlv_tt_change **tt_change,
- int32_t *tt_len)
+ s32 *tt_len)
{
- uint16_t num_vlan = 0, num_entries = 0, change_offset, tvlv_len;
+ u16 num_vlan = 0;
+ u16 num_entries = 0;
+ u16 change_offset;
+ u16 tvlv_len;
struct batadv_tvlv_tt_vlan_data *tt_vlan;
struct batadv_orig_node_vlan *vlan;
- uint8_t *tt_change_ptr;
+ u8 *tt_change_ptr;
rcu_read_lock();
- list_for_each_entry_rcu(vlan, &orig_node->vlan_list, list) {
+ hlist_for_each_entry_rcu(vlan, &orig_node->vlan_list, list) {
num_vlan++;
num_entries += atomic_read(&vlan->tt.num_entries);
}
(*tt_data)->num_vlan = htons(num_vlan);
tt_vlan = (struct batadv_tvlv_tt_vlan_data *)(*tt_data + 1);
- list_for_each_entry_rcu(vlan, &orig_node->vlan_list, list) {
+ hlist_for_each_entry_rcu(vlan, &orig_node->vlan_list, list) {
tt_vlan->vid = htons(vlan->vid);
tt_vlan->crc = htonl(vlan->tt.crc);
tt_vlan++;
}
- tt_change_ptr = (uint8_t *)*tt_data + change_offset;
+ tt_change_ptr = (u8 *)*tt_data + change_offset;
*tt_change = (struct batadv_tvlv_tt_change *)tt_change_ptr;
out:
*
* Return the size of the allocated buffer or 0 in case of failure.
*/
-static uint16_t
+static u16
batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv,
struct batadv_tvlv_tt_data **tt_data,
struct batadv_tvlv_tt_change **tt_change,
- int32_t *tt_len)
+ s32 *tt_len)
{
struct batadv_tvlv_tt_vlan_data *tt_vlan;
struct batadv_softif_vlan *vlan;
- uint16_t num_vlan = 0, num_entries = 0, tvlv_len;
- uint8_t *tt_change_ptr;
+ u16 num_vlan = 0;
+ u16 num_entries = 0;
+ u16 tvlv_len;
+ u8 *tt_change_ptr;
int change_offset;
rcu_read_lock();
tt_vlan++;
}
- tt_change_ptr = (uint8_t *)*tt_data + change_offset;
+ tt_change_ptr = (u8 *)*tt_data + change_offset;
*tt_change = (struct batadv_tvlv_tt_change *)tt_change_ptr;
out:
struct batadv_tvlv_tt_data *tt_data;
struct batadv_tvlv_tt_change *tt_change;
int tt_diff_len, tt_change_len = 0;
- int tt_diff_entries_num = 0, tt_diff_entries_count = 0;
- uint16_t tvlv_len;
+ int tt_diff_entries_num = 0;
+ int tt_diff_entries_count = 0;
+ u16 tvlv_len;
tt_diff_entries_num = atomic_read(&bat_priv->tt.local_changes);
tt_diff_len = batadv_tt_len(tt_diff_entries_num);
struct batadv_softif_vlan *vlan;
struct hlist_head *head;
unsigned short vid;
- uint32_t i;
+ u32 i;
int last_seen_secs;
int last_seen_msecs;
unsigned long last_seen_jiffies;
bool no_purge;
- uint16_t np_flag = BATADV_TT_CLIENT_NOPURGE;
+ u16 np_flag = BATADV_TT_CLIENT_NOPURGE;
primary_if = batadv_seq_print_text_primary_if_get(seq);
if (!primary_if)
seq_printf(seq,
"Locally retrieved addresses (from %s) announced via TT (TTVN: %u):\n",
- net_dev->name, (uint8_t)atomic_read(&bat_priv->tt.vn));
+ net_dev->name, (u8)atomic_read(&bat_priv->tt.vn));
seq_printf(seq, " %-13s %s %-8s %-9s (%-10s)\n", "Client", "VID",
"Flags", "Last seen", "CRC");
" * %pM %4i [%c%c%c%c%c%c] %3u.%03u (%#.8x)\n",
tt_common_entry->addr,
BATADV_PRINT_VID(tt_common_entry->vid),
- (tt_common_entry->flags &
- BATADV_TT_CLIENT_ROAM ? 'R' : '.'),
+ ((tt_common_entry->flags &
+ BATADV_TT_CLIENT_ROAM) ? 'R' : '.'),
no_purge ? 'P' : '.',
- (tt_common_entry->flags &
- BATADV_TT_CLIENT_NEW ? 'N' : '.'),
- (tt_common_entry->flags &
- BATADV_TT_CLIENT_PENDING ? 'X' : '.'),
- (tt_common_entry->flags &
- BATADV_TT_CLIENT_WIFI ? 'W' : '.'),
- (tt_common_entry->flags &
- BATADV_TT_CLIENT_ISOLA ? 'I' : '.'),
+ ((tt_common_entry->flags &
+ BATADV_TT_CLIENT_NEW) ? 'N' : '.'),
+ ((tt_common_entry->flags &
+ BATADV_TT_CLIENT_PENDING) ? 'X' : '.'),
+ ((tt_common_entry->flags &
+ BATADV_TT_CLIENT_WIFI) ? 'W' : '.'),
+ ((tt_common_entry->flags &
+ BATADV_TT_CLIENT_ISOLA) ? 'I' : '.'),
no_purge ? 0 : last_seen_secs,
no_purge ? 0 : last_seen_msecs,
vlan->tt.crc);
static void
batadv_tt_local_set_pending(struct batadv_priv *bat_priv,
struct batadv_tt_local_entry *tt_local_entry,
- uint16_t flags, const char *message)
+ u16 flags, const char *message)
{
batadv_tt_local_event(bat_priv, tt_local_entry, flags);
*
* Returns the flags assigned to the local entry before being deleted
*/
-uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
- const uint8_t *addr, unsigned short vid,
- const char *message, bool roaming)
+u16 batadv_tt_local_remove(struct batadv_priv *bat_priv, const u8 *addr,
+ unsigned short vid, const char *message,
+ bool roaming)
{
struct batadv_tt_local_entry *tt_local_entry;
- uint16_t flags, curr_flags = BATADV_NO_FLAGS;
+ u16 flags, curr_flags = BATADV_NO_FLAGS;
struct batadv_softif_vlan *vlan;
+ void *tt_entry_exists;
tt_local_entry = batadv_tt_local_hash_find(bat_priv, addr, vid);
if (!tt_local_entry)
* immediately purge it
*/
batadv_tt_local_event(bat_priv, tt_local_entry, BATADV_TT_CLIENT_DEL);
- hlist_del_rcu(&tt_local_entry->common.hash_entry);
+
+ tt_entry_exists = batadv_hash_remove(bat_priv->tt.local_hash,
+ batadv_compare_tt,
+ batadv_choose_tt,
+ &tt_local_entry->common);
+ if (!tt_entry_exists)
+ goto out;
+
+ /* extra call to free the local tt entry */
batadv_tt_local_entry_free_ref(tt_local_entry);
/* decrease the reference held for this vlan */
vlan = batadv_softif_vlan_get(bat_priv, vid);
+ if (!vlan)
+ goto out;
+
batadv_softif_vlan_free_ref(vlan);
batadv_softif_vlan_free_ref(vlan);
struct batadv_hashtable *hash = bat_priv->tt.local_hash;
struct hlist_head *head;
spinlock_t *list_lock; /* protects write access to the hash lists */
- uint32_t i;
+ u32 i;
for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
struct batadv_softif_vlan *vlan;
struct hlist_node *node_tmp;
struct hlist_head *head;
- uint32_t i;
+ u32 i;
if (!bat_priv->tt.local_hash)
return;
/* decrease the reference held for this vlan */
vlan = batadv_softif_vlan_get(bat_priv,
tt_common_entry->vid);
- batadv_softif_vlan_free_ref(vlan);
- batadv_softif_vlan_free_ref(vlan);
+ if (vlan) {
+ batadv_softif_vlan_free_ref(vlan);
+ batadv_softif_vlan_free_ref(vlan);
+ }
batadv_tt_local_entry_free_ref(tt_local);
}
static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
const unsigned char *tt_addr,
- unsigned short vid, uint16_t flags,
- uint8_t ttvn)
+ unsigned short vid, u16 flags, u8 ttvn)
{
struct batadv_tt_global_entry *tt_global_entry;
struct batadv_tt_local_entry *tt_local_entry;
bool ret = false;
int hash_added;
struct batadv_tt_common_entry *common;
- uint16_t local_flags;
+ u16 local_flags;
/* ignore global entries from backbone nodes */
if (batadv_bla_is_backbone_gw_orig(bat_priv, orig_node->orig, vid))
}
/* if the client was temporary added before receiving the first
- * OGM announcing it, we have to clear the TEMP flag
+ * OGM announcing it, we have to clear the TEMP flag. Also,
+ * remove the previous temporary orig node and re-add it
+ * if required. If the orig entry changed, the new one which
+ * is a non-temporary entry is preferred.
*/
- common->flags &= ~BATADV_TT_CLIENT_TEMP;
+ if (common->flags & BATADV_TT_CLIENT_TEMP) {
+ batadv_tt_global_del_orig_list(tt_global_entry);
+ common->flags &= ~BATADV_TT_CLIENT_TEMP;
+ }
/* the change can carry possible "attribute" flags like the
* TT_CLIENT_WIFI, therefore they have to be copied in the
struct batadv_tt_common_entry *tt_common_entry;
struct batadv_orig_node_vlan *vlan;
struct hlist_head *head;
- uint8_t last_ttvn;
- uint16_t flags;
+ u8 last_ttvn;
+ u16 flags;
tt_common_entry = &tt_global_entry->common;
flags = tt_common_entry->flags;
BATADV_PRINT_VID(tt_global_entry->common.vid),
best_entry->ttvn, best_entry->orig_node->orig,
last_ttvn, vlan->tt.crc,
- (flags & BATADV_TT_CLIENT_ROAM ? 'R' : '.'),
- (flags & BATADV_TT_CLIENT_WIFI ? 'W' : '.'),
- (flags & BATADV_TT_CLIENT_ISOLA ? 'I' : '.'),
- (flags & BATADV_TT_CLIENT_TEMP ? 'T' : '.'));
+ ((flags & BATADV_TT_CLIENT_ROAM) ? 'R' : '.'),
+ ((flags & BATADV_TT_CLIENT_WIFI) ? 'W' : '.'),
+ ((flags & BATADV_TT_CLIENT_ISOLA) ? 'I' : '.'),
+ ((flags & BATADV_TT_CLIENT_TEMP) ? 'T' : '.'));
batadv_orig_node_vlan_free_ref(vlan);
}
BATADV_PRINT_VID(tt_global_entry->common.vid),
orig_entry->ttvn, orig_entry->orig_node->orig,
last_ttvn, vlan->tt.crc,
- (flags & BATADV_TT_CLIENT_ROAM ? 'R' : '.'),
- (flags & BATADV_TT_CLIENT_WIFI ? 'W' : '.'),
- (flags & BATADV_TT_CLIENT_ISOLA ? 'I' : '.'),
- (flags & BATADV_TT_CLIENT_TEMP ? 'T' : '.'));
+ ((flags & BATADV_TT_CLIENT_ROAM) ? 'R' : '.'),
+ ((flags & BATADV_TT_CLIENT_WIFI) ? 'W' : '.'),
+ ((flags & BATADV_TT_CLIENT_ISOLA) ? 'I' : '.'),
+ ((flags & BATADV_TT_CLIENT_TEMP) ? 'T' : '.'));
batadv_orig_node_vlan_free_ref(vlan);
}
struct batadv_tt_global_entry *tt_global;
struct batadv_hard_iface *primary_if;
struct hlist_head *head;
- uint32_t i;
+ u32 i;
primary_if = batadv_seq_print_text_primary_if_get(seq);
if (!primary_if)
}
/**
- * batadv_tt_global_del_orig_entry - remove and free an orig_entry
+ * _batadv_tt_global_del_orig_entry - remove and free an orig_entry
* @tt_global_entry: the global entry to remove the orig_entry from
* @orig_entry: the orig entry to remove and free
*
* Remove an orig_entry from its list in the given tt_global_entry and
* free this orig_entry afterwards.
+ *
+ * Caller must hold tt_global_entry->list_lock and ensure orig_entry->list is
+ * part of a list.
*/
static void
-batadv_tt_global_del_orig_entry(struct batadv_tt_global_entry *tt_global_entry,
- struct batadv_tt_orig_list_entry *orig_entry)
+_batadv_tt_global_del_orig_entry(struct batadv_tt_global_entry *tt_global_entry,
+ struct batadv_tt_orig_list_entry *orig_entry)
{
+ lockdep_assert_held(&tt_global_entry->list_lock);
+
batadv_tt_global_size_dec(orig_entry->orig_node,
tt_global_entry->common.vid);
atomic_dec(&tt_global_entry->orig_list_count);
+ /* requires holding tt_global_entry->list_lock and orig_entry->list
+ * being part of a list
+ */
hlist_del_rcu(&orig_entry->list);
batadv_tt_orig_list_entry_free_ref(orig_entry);
}
spin_lock_bh(&tt_global_entry->list_lock);
head = &tt_global_entry->orig_list;
hlist_for_each_entry_safe(orig_entry, safe, head, list)
- batadv_tt_global_del_orig_entry(tt_global_entry, orig_entry);
+ _batadv_tt_global_del_orig_entry(tt_global_entry, orig_entry);
spin_unlock_bh(&tt_global_entry->list_lock);
}
orig_node->orig,
tt_global_entry->common.addr,
BATADV_PRINT_VID(vid), message);
- batadv_tt_global_del_orig_entry(tt_global_entry,
- orig_entry);
+ _batadv_tt_global_del_orig_entry(tt_global_entry,
+ orig_entry);
}
}
spin_unlock_bh(&tt_global_entry->list_lock);
*/
void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
- int32_t match_vid,
+ s32 match_vid,
const char *message)
{
struct batadv_tt_global_entry *tt_global;
struct batadv_tt_common_entry *tt_common_entry;
- uint32_t i;
+ u32 i;
struct batadv_hashtable *hash = bat_priv->tt.global_hash;
struct hlist_node *safe;
struct hlist_head *head;
}
spin_unlock_bh(list_lock);
}
- orig_node->capa_initialized &= ~BATADV_ORIG_CAPA_HAS_TT;
+ clear_bit(BATADV_ORIG_CAPA_HAS_TT, &orig_node->capa_initialized);
}
static bool batadv_tt_global_to_purge(struct batadv_tt_global_entry *tt_global,
struct hlist_head *head;
struct hlist_node *node_tmp;
spinlock_t *list_lock; /* protects write access to the hash lists */
- uint32_t i;
+ u32 i;
char *msg = NULL;
struct batadv_tt_common_entry *tt_common;
struct batadv_tt_global_entry *tt_global;
struct batadv_tt_global_entry *tt_global;
struct hlist_node *node_tmp;
struct hlist_head *head;
- uint32_t i;
+ u32 i;
if (!bat_priv->tt.global_hash)
return;
* If the two clients are AP isolated the function returns NULL.
*/
struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv,
- const uint8_t *src,
- const uint8_t *addr,
+ const u8 *src,
+ const u8 *addr,
unsigned short vid)
{
struct batadv_tt_local_entry *tt_local_entry = NULL;
*
* Returns the checksum of the global table of a given originator.
*/
-static uint32_t batadv_tt_global_crc(struct batadv_priv *bat_priv,
- struct batadv_orig_node *orig_node,
- unsigned short vid)
+static u32 batadv_tt_global_crc(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig_node,
+ unsigned short vid)
{
struct batadv_hashtable *hash = bat_priv->tt.global_hash;
struct batadv_tt_common_entry *tt_common;
struct batadv_tt_global_entry *tt_global;
struct hlist_head *head;
- uint32_t i, crc_tmp, crc = 0;
- uint8_t flags;
+ u32 i, crc_tmp, crc = 0;
+ u8 flags;
__be16 tmp_vid;
for (i = 0; i < hash->size; i++) {
*
* Returns the checksum of the local table
*/
-static uint32_t batadv_tt_local_crc(struct batadv_priv *bat_priv,
- unsigned short vid)
+static u32 batadv_tt_local_crc(struct batadv_priv *bat_priv,
+ unsigned short vid)
{
struct batadv_hashtable *hash = bat_priv->tt.local_hash;
struct batadv_tt_common_entry *tt_common;
struct hlist_head *head;
- uint32_t i, crc_tmp, crc = 0;
- uint8_t flags;
+ u32 i, crc_tmp, crc = 0;
+ u8 flags;
__be16 tmp_vid;
for (i = 0; i < hash->size; i++) {
static void batadv_tt_req_list_free(struct batadv_priv *bat_priv)
{
- struct batadv_tt_req_node *node, *safe;
+ struct batadv_tt_req_node *node;
+ struct hlist_node *safe;
spin_lock_bh(&bat_priv->tt.req_list_lock);
- list_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
- list_del(&node->list);
+ hlist_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
+ hlist_del_init(&node->list);
kfree(node);
}
static void batadv_tt_save_orig_buffer(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
const void *tt_buff,
- uint16_t tt_buff_len)
+ u16 tt_buff_len)
{
/* Replace the old buffer only if I received something in the
* last OGM (the OGM could carry no changes)
static void batadv_tt_req_purge(struct batadv_priv *bat_priv)
{
- struct batadv_tt_req_node *node, *safe;
+ struct batadv_tt_req_node *node;
+ struct hlist_node *safe;
spin_lock_bh(&bat_priv->tt.req_list_lock);
- list_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
+ hlist_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
if (batadv_has_timed_out(node->issued_at,
BATADV_TT_REQUEST_TIMEOUT)) {
- list_del(&node->list);
+ hlist_del_init(&node->list);
kfree(node);
}
}
spin_unlock_bh(&bat_priv->tt.req_list_lock);
}
-/* returns the pointer to the new tt_req_node struct if no request
- * has already been issued for this orig_node, NULL otherwise
+/**
+ * batadv_tt_req_node_new - search and possibly create a tt_req_node object
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: orig node this request is being issued for
+ *
+ * Returns the pointer to the new tt_req_node struct if no request
+ * has already been issued for this orig_node, NULL otherwise.
*/
static struct batadv_tt_req_node *
-batadv_new_tt_req_node(struct batadv_priv *bat_priv,
+batadv_tt_req_node_new(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node)
{
struct batadv_tt_req_node *tt_req_node_tmp, *tt_req_node = NULL;
spin_lock_bh(&bat_priv->tt.req_list_lock);
- list_for_each_entry(tt_req_node_tmp, &bat_priv->tt.req_list, list) {
+ hlist_for_each_entry(tt_req_node_tmp, &bat_priv->tt.req_list, list) {
if (batadv_compare_eth(tt_req_node_tmp, orig_node) &&
!batadv_has_timed_out(tt_req_node_tmp->issued_at,
BATADV_TT_REQUEST_TIMEOUT))
ether_addr_copy(tt_req_node->addr, orig_node->orig);
tt_req_node->issued_at = jiffies;
- list_add(&tt_req_node->list, &bat_priv->tt.req_list);
+ hlist_add_head(&tt_req_node->list, &bat_priv->tt.req_list);
unlock:
spin_unlock_bh(&bat_priv->tt.req_list_lock);
return tt_req_node;
*/
static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv,
struct batadv_hashtable *hash,
- void *tvlv_buff, uint16_t tt_len,
+ void *tvlv_buff, u16 tt_len,
int (*valid_cb)(const void *, const void *),
void *cb_data)
{
struct batadv_tt_common_entry *tt_common_entry;
struct batadv_tvlv_tt_change *tt_change;
struct hlist_head *head;
- uint16_t tt_tot, tt_num_entries = 0;
- uint32_t i;
+ u16 tt_tot, tt_num_entries = 0;
+ u32 i;
tt_tot = batadv_tt_entries(tt_len);
tt_change = (struct batadv_tvlv_tt_change *)tvlv_buff;
*/
static bool batadv_tt_global_check_crc(struct batadv_orig_node *orig_node,
struct batadv_tvlv_tt_vlan_data *tt_vlan,
- uint16_t num_vlan)
+ u16 num_vlan)
{
struct batadv_tvlv_tt_vlan_data *tt_vlan_tmp;
struct batadv_orig_node_vlan *vlan;
- uint32_t crc;
+ u32 crc;
int i;
/* check if each received CRC matches the locally stored one */
struct batadv_orig_node *orig_node)
{
struct batadv_orig_node_vlan *vlan;
- uint32_t crc;
+ u32 crc;
/* recompute the global CRC for each VLAN */
rcu_read_lock();
- list_for_each_entry_rcu(vlan, &orig_node->vlan_list, list) {
+ hlist_for_each_entry_rcu(vlan, &orig_node->vlan_list, list) {
/* if orig_node is a backbone node for this VLAN, don't compute
* the CRC as we ignore all the global entries over it
*/
*/
static int batadv_send_tt_request(struct batadv_priv *bat_priv,
struct batadv_orig_node *dst_orig_node,
- uint8_t ttvn,
+ u8 ttvn,
struct batadv_tvlv_tt_vlan_data *tt_vlan,
- uint16_t num_vlan, bool full_table)
+ u16 num_vlan, bool full_table)
{
struct batadv_tvlv_tt_data *tvlv_tt_data = NULL;
struct batadv_tt_req_node *tt_req_node = NULL;
/* The new tt_req will be issued only if I'm not waiting for a
* reply from the same orig_node yet
*/
- tt_req_node = batadv_new_tt_req_node(bat_priv, dst_orig_node);
+ tt_req_node = batadv_tt_req_node_new(bat_priv, dst_orig_node);
if (!tt_req_node)
goto out;
batadv_hardif_free_ref(primary_if);
if (ret && tt_req_node) {
spin_lock_bh(&bat_priv->tt.req_list_lock);
- list_del(&tt_req_node->list);
+ /* hlist_del_init() verifies tt_req_node still is in the list */
+ hlist_del_init(&tt_req_node->list);
spin_unlock_bh(&bat_priv->tt.req_list_lock);
kfree(tt_req_node);
}
*/
static bool batadv_send_other_tt_response(struct batadv_priv *bat_priv,
struct batadv_tvlv_tt_data *tt_data,
- uint8_t *req_src, uint8_t *req_dst)
+ u8 *req_src, u8 *req_dst)
{
struct batadv_orig_node *req_dst_orig_node;
struct batadv_orig_node *res_dst_orig_node = NULL;
struct batadv_tvlv_tt_data *tvlv_tt_data = NULL;
struct batadv_tvlv_tt_vlan_data *tt_vlan;
bool ret = false, full_table;
- uint8_t orig_ttvn, req_ttvn;
- uint16_t tvlv_len;
- int32_t tt_len;
+ u8 orig_ttvn, req_ttvn;
+ u16 tvlv_len;
+ s32 tt_len;
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Received TT_REQUEST from %pM for ttvn: %u (%pM) [%c]\n",
req_src, tt_data->ttvn, req_dst,
- (tt_data->flags & BATADV_TT_FULL_TABLE ? 'F' : '.'));
+ ((tt_data->flags & BATADV_TT_FULL_TABLE) ? 'F' : '.'));
/* Let's get the orig node of the REAL destination */
req_dst_orig_node = batadv_orig_hash_find(bat_priv, req_dst);
if (!res_dst_orig_node)
goto out;
- orig_ttvn = (uint8_t)atomic_read(&req_dst_orig_node->last_ttvn);
+ orig_ttvn = (u8)atomic_read(&req_dst_orig_node->last_ttvn);
req_ttvn = tt_data->ttvn;
tt_vlan = (struct batadv_tvlv_tt_vlan_data *)(tt_data + 1);
*/
static bool batadv_send_my_tt_response(struct batadv_priv *bat_priv,
struct batadv_tvlv_tt_data *tt_data,
- uint8_t *req_src)
+ u8 *req_src)
{
struct batadv_tvlv_tt_data *tvlv_tt_data = NULL;
struct batadv_hard_iface *primary_if = NULL;
struct batadv_tvlv_tt_change *tt_change;
struct batadv_orig_node *orig_node;
- uint8_t my_ttvn, req_ttvn;
- uint16_t tvlv_len;
+ u8 my_ttvn, req_ttvn;
+ u16 tvlv_len;
bool full_table;
- int32_t tt_len;
+ s32 tt_len;
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Received TT_REQUEST from %pM for ttvn: %u (me) [%c]\n",
req_src, tt_data->ttvn,
- (tt_data->flags & BATADV_TT_FULL_TABLE ? 'F' : '.'));
+ ((tt_data->flags & BATADV_TT_FULL_TABLE) ? 'F' : '.'));
spin_lock_bh(&bat_priv->tt.commit_lock);
- my_ttvn = (uint8_t)atomic_read(&bat_priv->tt.vn);
+ my_ttvn = (u8)atomic_read(&bat_priv->tt.vn);
req_ttvn = tt_data->ttvn;
orig_node = batadv_orig_hash_find(bat_priv, req_src);
bat_priv->tt.last_changeset_len);
spin_unlock_bh(&bat_priv->tt.last_changeset_lock);
} else {
- req_ttvn = (uint8_t)atomic_read(&bat_priv->tt.vn);
+ req_ttvn = (u8)atomic_read(&bat_priv->tt.vn);
/* allocate the tvlv, put the tt_data and all the tt_vlan_data
* in the initial part
*/
static bool batadv_send_tt_response(struct batadv_priv *bat_priv,
struct batadv_tvlv_tt_data *tt_data,
- uint8_t *req_src, uint8_t *req_dst)
+ u8 *req_src, u8 *req_dst)
{
if (batadv_is_my_mac(bat_priv, req_dst))
return batadv_send_my_tt_response(bat_priv, tt_data, req_src);
static void _batadv_tt_update_changes(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
struct batadv_tvlv_tt_change *tt_change,
- uint16_t tt_num_changes, uint8_t ttvn)
+ u16 tt_num_changes, u8 ttvn)
{
int i;
int roams;
return;
}
}
- orig_node->capa_initialized |= BATADV_ORIG_CAPA_HAS_TT;
+ set_bit(BATADV_ORIG_CAPA_HAS_TT, &orig_node->capa_initialized);
}
static void batadv_tt_fill_gtable(struct batadv_priv *bat_priv,
struct batadv_tvlv_tt_change *tt_change,
- uint8_t ttvn, uint8_t *resp_src,
- uint16_t num_entries)
+ u8 ttvn, u8 *resp_src,
+ u16 num_entries)
{
struct batadv_orig_node *orig_node;
static void batadv_tt_update_changes(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
- uint16_t tt_num_changes, uint8_t ttvn,
+ u16 tt_num_changes, u8 ttvn,
struct batadv_tvlv_tt_change *tt_change)
{
_batadv_tt_update_changes(bat_priv, orig_node, tt_change,
*
* Returns true if the client is served by this node, false otherwise.
*/
-bool batadv_is_my_client(struct batadv_priv *bat_priv, const uint8_t *addr,
+bool batadv_is_my_client(struct batadv_priv *bat_priv, const u8 *addr,
unsigned short vid)
{
struct batadv_tt_local_entry *tt_local_entry;
*/
static void batadv_handle_tt_response(struct batadv_priv *bat_priv,
struct batadv_tvlv_tt_data *tt_data,
- uint8_t *resp_src, uint16_t num_entries)
+ u8 *resp_src, u16 num_entries)
{
- struct batadv_tt_req_node *node, *safe;
+ struct batadv_tt_req_node *node;
+ struct hlist_node *safe;
struct batadv_orig_node *orig_node = NULL;
struct batadv_tvlv_tt_change *tt_change;
- uint8_t *tvlv_ptr = (uint8_t *)tt_data;
- uint16_t change_offset;
+ u8 *tvlv_ptr = (u8 *)tt_data;
+ u16 change_offset;
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Received TT_RESPONSE from %pM for ttvn %d t_size: %d [%c]\n",
resp_src, tt_data->ttvn, num_entries,
- (tt_data->flags & BATADV_TT_FULL_TABLE ? 'F' : '.'));
+ ((tt_data->flags & BATADV_TT_FULL_TABLE) ? 'F' : '.'));
orig_node = batadv_orig_hash_find(bat_priv, resp_src);
if (!orig_node)
/* Delete the tt_req_node from pending tt_requests list */
spin_lock_bh(&bat_priv->tt.req_list_lock);
- list_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
+ hlist_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
if (!batadv_compare_eth(node->addr, resp_src))
continue;
- list_del(&node->list);
+ hlist_del_init(&node->list);
kfree(node);
}
*
* returns true if the ROAMING_ADV can be sent, false otherwise
*/
-static bool batadv_tt_check_roam_count(struct batadv_priv *bat_priv,
- uint8_t *client)
+static bool batadv_tt_check_roam_count(struct batadv_priv *bat_priv, u8 *client)
{
struct batadv_tt_roam_node *tt_roam_node;
bool ret = false;
* for this particular roamed client has to be forwarded to the sender of the
* roaming message.
*/
-static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
+static void batadv_send_roam_adv(struct batadv_priv *bat_priv, u8 *client,
unsigned short vid,
struct batadv_orig_node *orig_node)
{
* @enable: whether to set or unset the flag
* @count: whether to increase the TT size by the number of changed entries
*/
-static void batadv_tt_local_set_flags(struct batadv_priv *bat_priv,
- uint16_t flags, bool enable, bool count)
+static void batadv_tt_local_set_flags(struct batadv_priv *bat_priv, u16 flags,
+ bool enable, bool count)
{
struct batadv_hashtable *hash = bat_priv->tt.local_hash;
struct batadv_tt_common_entry *tt_common_entry;
- uint16_t changed_num = 0;
+ u16 changed_num = 0;
struct hlist_head *head;
- uint32_t i;
+ u32 i;
if (!hash)
return;
struct hlist_node *node_tmp;
struct hlist_head *head;
spinlock_t *list_lock; /* protects write access to the hash lists */
- uint32_t i;
+ u32 i;
if (!hash)
return;
/* decrease the reference held for this vlan */
vlan = batadv_softif_vlan_get(bat_priv, tt_common->vid);
- batadv_softif_vlan_free_ref(vlan);
- batadv_softif_vlan_free_ref(vlan);
+ if (vlan) {
+ batadv_softif_vlan_free_ref(vlan);
+ batadv_softif_vlan_free_ref(vlan);
+ }
batadv_tt_local_entry_free_ref(tt_local);
}
*/
static void batadv_tt_local_commit_changes_nolock(struct batadv_priv *bat_priv)
{
+ lockdep_assert_held(&bat_priv->tt.commit_lock);
+
/* Update multicast addresses in local translation table */
batadv_mcast_mla_update(bat_priv);
atomic_inc(&bat_priv->tt.vn);
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Local changes committed, updating to ttvn %u\n",
- (uint8_t)atomic_read(&bat_priv->tt.vn));
+ (u8)atomic_read(&bat_priv->tt.vn));
/* reset the sending counter */
atomic_set(&bat_priv->tt.ogm_append_cnt, BATADV_TT_OGM_APPEND_MAX);
spin_unlock_bh(&bat_priv->tt.commit_lock);
}
-bool batadv_is_ap_isolated(struct batadv_priv *bat_priv, uint8_t *src,
- uint8_t *dst, unsigned short vid)
+bool batadv_is_ap_isolated(struct batadv_priv *bat_priv, u8 *src, u8 *dst,
+ unsigned short vid)
{
struct batadv_tt_local_entry *tt_local_entry = NULL;
struct batadv_tt_global_entry *tt_global_entry = NULL;
*/
static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
- const void *tt_buff, uint16_t tt_num_vlan,
+ const void *tt_buff, u16 tt_num_vlan,
struct batadv_tvlv_tt_change *tt_change,
- uint16_t tt_num_changes, uint8_t ttvn)
+ u16 tt_num_changes, u8 ttvn)
{
- uint8_t orig_ttvn = (uint8_t)atomic_read(&orig_node->last_ttvn);
+ u8 orig_ttvn = (u8)atomic_read(&orig_node->last_ttvn);
struct batadv_tvlv_tt_vlan_data *tt_vlan;
bool full_table = true;
bool has_tt_init;
tt_vlan = (struct batadv_tvlv_tt_vlan_data *)tt_buff;
- has_tt_init = orig_node->capa_initialized & BATADV_ORIG_CAPA_HAS_TT;
+ has_tt_init = test_bit(BATADV_ORIG_CAPA_HAS_TT,
+ &orig_node->capa_initialized);
/* orig table not initialised AND first diff is in the OGM OR the ttvn
* increased by one -> we can apply the attached changes
* deleted later by a DEL or because of timeout
*/
bool batadv_tt_global_client_is_roaming(struct batadv_priv *bat_priv,
- uint8_t *addr, unsigned short vid)
+ u8 *addr, unsigned short vid)
{
struct batadv_tt_global_entry *tt_global_entry;
bool ret = false;
* to keep the latter consistent with the node TTVN
*/
bool batadv_tt_local_client_is_roaming(struct batadv_priv *bat_priv,
- uint8_t *addr, unsigned short vid)
+ u8 *addr, unsigned short vid)
{
struct batadv_tt_local_entry *tt_local_entry;
bool ret = false;
*/
static void batadv_tt_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig,
- uint8_t flags, void *tvlv_value,
- uint16_t tvlv_value_len)
+ u8 flags, void *tvlv_value,
+ u16 tvlv_value_len)
{
struct batadv_tvlv_tt_vlan_data *tt_vlan;
struct batadv_tvlv_tt_change *tt_change;
struct batadv_tvlv_tt_data *tt_data;
- uint16_t num_entries, num_vlan;
+ u16 num_entries, num_vlan;
if (tvlv_value_len < sizeof(*tt_data))
return;
* otherwise.
*/
static int batadv_tt_tvlv_unicast_handler_v1(struct batadv_priv *bat_priv,
- uint8_t *src, uint8_t *dst,
+ u8 *src, u8 *dst,
void *tvlv_value,
- uint16_t tvlv_value_len)
+ u16 tvlv_value_len)
{
struct batadv_tvlv_tt_data *tt_data;
- uint16_t tt_vlan_len, tt_num_entries;
+ u16 tt_vlan_len, tt_num_entries;
char tt_flag;
bool ret;
* otherwise.
*/
static int batadv_roam_tvlv_unicast_handler_v1(struct batadv_priv *bat_priv,
- uint8_t *src, uint8_t *dst,
+ u8 *src, u8 *dst,
void *tvlv_value,
- uint16_t tvlv_value_len)
+ u16 tvlv_value_len)
{
struct batadv_tvlv_roam_adv *roaming_adv;
struct batadv_orig_node *orig_node = NULL;
* otherwise
*/
bool batadv_tt_global_is_isolated(struct batadv_priv *bat_priv,
- const uint8_t *addr, unsigned short vid)
+ const u8 *addr, unsigned short vid)
{
struct batadv_tt_global_entry *tt;
bool ret;
Code Review / kvmfornfv.git / blobdiff