path: root/net
diff options
authorJouni Malinen <>2016-06-19 23:51:02 +0300
committerJohannes Berg <>2016-06-28 12:39:50 +0200
commit126e7557328a1cd576be4fca95b133a2695283ff (patch)
treef40789d70bc935d47031c580ffbd72f8417bf746 /net
parent3d5fdff46c4b2b9534fa2f9fc78e90a48e0ff724 (diff)
mac80211: Fix mesh estab_plinks counting in STA removal case
If a user space program (e.g., wpa_supplicant) deletes a STA entry that is currently in NL80211_PLINK_ESTAB state, the number of established plinks counter was not decremented and this could result in rejecting new plink establishment before really hitting the real maximum plink limit. For !user_mpm case, this decrementation is handled by mesh_plink_deactive(). Fix this by decrementing estab_plinks on STA deletion (mesh_sta_cleanup() gets called from there) so that the counter has a correct value and the Beacon frame advertisement in Mesh Configuration element shows the proper value for capability to accept additional peers. Cc: Signed-off-by: Jouni Malinen <> Signed-off-by: Johannes Berg <>
Diffstat (limited to 'net')
1 files changed, 5 insertions, 2 deletions
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 21b1fdf5d01d..6a1603bcdced 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -148,14 +148,17 @@ u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
void mesh_sta_cleanup(struct sta_info *sta)
struct ieee80211_sub_if_data *sdata = sta->sdata;
- u32 changed;
+ u32 changed = 0;
* maybe userspace handles peer allocation and peering, but in either
* case the beacon is still generated by the kernel and we might need
* an update.
- changed = mesh_accept_plinks_update(sdata);
+ if (sdata->u.mesh.user_mpm &&
+ sta->mesh->plink_state == NL80211_PLINK_ESTAB)
+ changed |= mesh_plink_dec_estab_count(sdata);
+ changed |= mesh_accept_plinks_update(sdata);
if (!sdata->u.mesh.user_mpm) {
changed |= mesh_plink_deactivate(sta);