According to 802.11-2012 13.3.1, a mesh STA should assign an AID
upon receipt of a mesh peering open frame rather than using the link
id of the peer. Using the peer link id has two potential issues:
it may not be unique among the peers, and by its nature it is random,
so the TIM may not compress well.
In preparation for allocating it properly, use sta->sta.aid, but keep
the existing behavior of using the plid.
Additionally, fix a bug where the AID is written into the wrong place
in peering confirm frame skbs.
Signed-off-by: Bob Copeland <m...@bobcopeland.com>
---
net/mac80211/mesh_plink.c | 20 ++++++++++++--------
net/mac80211/sta_info.c | 5 +----
2 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 7b071e36e55e..9dca16bd3eb9 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -200,6 +200,7 @@ static u32 mesh_set_ht_prot_mode(struct
ieee80211_sub_if_data *sdata)
}
static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta,
enum ieee80211_self_protected_actioncode action,
u8 *da, u16 llid, u16 plid, u16 reason)
{
@@ -249,7 +250,7 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data
*sdata,
if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
/* AID */
pos = skb_put(skb, 2);
- put_unaligned_le16(plid, pos + 2);
+ put_unaligned_le16(sta->sta.aid, pos);
}
if (ieee80211_add_srates_ie(sdata, skb, true, band) ||
ieee80211_add_ext_srates_ie(sdata, skb, true, band) ||
@@ -362,7 +363,7 @@ u32 mesh_plink_deactivate(struct sta_info *sta)
spin_lock_bh(&sta->mesh->plink_lock);
changed = __mesh_plink_deactivate(sta);
sta->mesh->reason = WLAN_REASON_MESH_PEER_CANCELED;
- mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+ mesh_plink_frame_tx(sdata, sta, WLAN_SP_MESH_PEERING_CLOSE,
sta->sta.addr, sta->mesh->llid, sta->mesh->plid,
sta->mesh->reason);
spin_unlock_bh(&sta->mesh->plink_lock);
@@ -619,7 +620,7 @@ static void mesh_plink_timer(unsigned long data)
}
spin_unlock_bh(&sta->mesh->plink_lock);
if (action)
- mesh_plink_frame_tx(sdata, action, sta->sta.addr,
+ mesh_plink_frame_tx(sdata, sta, action, sta->sta.addr,
sta->mesh->llid, sta->mesh->plid, reason);
}
@@ -689,7 +690,7 @@ u32 mesh_plink_open(struct sta_info *sta)
/* set the non-peer mode to active during peering */
changed = ieee80211_mps_local_status_update(sdata);
- mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
+ mesh_plink_frame_tx(sdata, sta, WLAN_SP_MESH_PEERING_OPEN,
sta->sta.addr, sta->mesh->llid, 0, 0);
return changed;
}
@@ -871,13 +872,13 @@ static u32 mesh_plink_fsm(struct ieee80211_sub_if_data
*sdata,
}
spin_unlock_bh(&sta->mesh->plink_lock);
if (action) {
- mesh_plink_frame_tx(sdata, action, sta->sta.addr,
+ mesh_plink_frame_tx(sdata, sta, action, sta->sta.addr,
sta->mesh->llid, sta->mesh->plid,
sta->mesh->reason);
/* also send confirm in open case */
if (action == WLAN_SP_MESH_PEERING_OPEN) {
- mesh_plink_frame_tx(sdata,
+ mesh_plink_frame_tx(sdata, sta,
WLAN_SP_MESH_PEERING_CONFIRM,
sta->sta.addr, sta->mesh->llid,
sta->mesh->plid, 0);
@@ -1067,8 +1068,9 @@ mesh_process_plink_frame(struct ieee80211_sub_if_data
*sdata,
goto unlock_rcu;
}
sta->mesh->plid = plid;
+ sta->sta.aid = plid;
} else if (!sta && event == OPN_RJCT) {
- mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+ mesh_plink_frame_tx(sdata, NULL, WLAN_SP_MESH_PEERING_CLOSE,
mgmt->sa, 0, plid,
WLAN_REASON_MESH_CONFIG);
goto unlock_rcu;
@@ -1078,8 +1080,10 @@ mesh_process_plink_frame(struct ieee80211_sub_if_data
*sdata,
}
/* 802.11-2012 13.3.7.2 - update plid on CNF if not set */
- if (!sta->mesh->plid && event == CNF_ACPT)
+ if (!sta->mesh->plid && event == CNF_ACPT) {
sta->mesh->plid = plid;
+ sta->sta.aid = sta->mesh->plid;
+ }
changed |= mesh_plink_fsm(sdata, sta, event);
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 9da7d2bc271a..70cd9fa57424 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -635,7 +635,7 @@ static void __sta_info_recalc_tim(struct sta_info *sta,
bool ignore_pending)
bool indicate_tim = false;
u8 ignore_for_tim = sta->sta.uapsd_queues;
int ac;
- u16 id;
+ u16 id = sta->sta.aid;
if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
@@ -643,12 +643,9 @@ static void __sta_info_recalc_tim(struct sta_info *sta,
bool ignore_pending)
return;
ps = &sta->sdata->bss->ps;
- id = sta->sta.aid;
#ifdef CONFIG_MAC80211_MESH
} else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) {
ps = &sta->sdata->u.mesh.ps;
- /* TIM map only for 1 <= PLID <= IEEE80211_MAX_AID */
- id = sta->mesh->plid % (IEEE80211_MAX_AID + 1);
#endif
} else {
return;
--
2.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
