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authorJohannes Berg <johannes@sipsolutions.net>2008-02-27 09:56:40 +0100
committerJohn W. Linville <linville@tuxdriver.com>2008-03-06 15:30:47 -0500
commit03e4497ebeaa8011eb0ab0a54496ed6413b9d1a4 (patch)
tree96eb34d88a56f84f06f155e1d4a0d6d34d0f7933 /net/mac80211/mesh_plink.c
parentdbbea6713d6096cd1c411cb453a6b71292c78b33 (diff)
downloadlinux-03e4497ebeaa8011eb0ab0a54496ed6413b9d1a4.tar.bz2
mac80211: fix sta_info mesh timer bug
I noticed a bug I introduced when mesh is enabled: sta_info_destroy() will end up calling cancel_timer() on a timer that has never been initialized because the timer is only initialized in mesh_plink_alloc(), not in sta_info_alloc(). This patch moves the initialization of all mesh related fields into sta_info_alloc(), adds a bit of sanity checking to the cfg80211 handlers and sta_info_insert() and makes mesh_plink_alloc() a static helper function that is only used from the mesh plink code. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Luis Carlos Cobo <luisca@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/mesh_plink.c')
-rw-r--r--net/mac80211/mesh_plink.c31
1 files changed, 5 insertions, 26 deletions
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 85cb75d53c43..7f02ae8abe90 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -88,40 +88,19 @@ static inline void mesh_plink_fsm_restart(struct sta_info *sta)
sta->llid = sta->plid = sta->reason = sta->plink_retries = 0;
}
-/**
- * mesh_plink_alloc - allocate a new mesh peer link
- *
- * @sdata: local mesh interface
- * @hw_addr: hardware address (ETH_ALEN length)
- * @rates: rates the mesh peer supports
- *
- * The initial state of the new plink is set to LISTEN
- *
- * Returns: NULL on error.
- */
-struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
- u8 *hw_addr, u64 rates, gfp_t gfp)
+static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
+ u8 *hw_addr, u64 rates)
{
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
- if (compare_ether_addr(hw_addr, sdata->dev->dev_addr) == 0)
- /* never add ourselves as neighbours */
- return NULL;
-
- if (is_multicast_ether_addr(hw_addr))
- return NULL;
-
if (local->num_sta >= MESH_MAX_PLINKS)
return NULL;
- sta = sta_info_alloc(sdata, hw_addr, gfp);
+ sta = sta_info_alloc(sdata, hw_addr, GFP_ATOMIC);
if (!sta)
return NULL;
- sta->plink_state = LISTEN;
- spin_lock_init(&sta->plink_lock);
- init_timer(&sta->plink_timer);
sta->flags |= WLAN_STA_AUTHORIZED;
sta->supp_rates[local->hw.conf.channel->band] = rates;
@@ -249,7 +228,7 @@ void mesh_neighbour_update(u8 *hw_addr, u64 rates, struct net_device *dev,
sta = sta_info_get(local, hw_addr);
if (!sta) {
- sta = mesh_plink_alloc(sdata, hw_addr, rates, GFP_ATOMIC);
+ sta = mesh_plink_alloc(sdata, hw_addr, rates);
if (!sta) {
rcu_read_unlock();
return;
@@ -518,7 +497,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
}
rates = ieee80211_sta_get_rates(local, &elems, rx_status->band);
- sta = mesh_plink_alloc(sdata, mgmt->sa, rates, GFP_ATOMIC);
+ sta = mesh_plink_alloc(sdata, mgmt->sa, rates);
if (!sta) {
mpl_dbg("Mesh plink error: plink table full\n");
rcu_read_unlock();