A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 19:51:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

{nl,cfg,mac}80211: Implement RSSI threshold for mesh peering

Browse source 
Mesh peer links are established only if average rssi of the peer
candidate satisfies the threshold. This is not in 802.11s specification
but was requested by David Fulgham, an open80211s user. This is a way to avoid
marginal peer links with stations that are barely within range.

This patch adds a new mesh configuration parameter, mesh_rssi_threshold. This
feature is supported only for hardwares that report signal in dBm.

Signed-off-by: Ashok Nagarajan <[email protected]>
Signed-off-by: Javier Cardona <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
This commit is contained in:
Ashok Nagarajan 2012-02-28 17:04:08 -08:00 • committed by John W. Linville
commit 5533513784
7 changed files with 39 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

8
net/mac80211/cfg.c
View file

@ -1314,6 +1314,14 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy,
}
if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
/* our RSSI threshold implementation is supported only for
* devices that report signal in dBm.
*/
if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
return -ENOTSUPP;
conf->rssi_threshold = nconf->rssi_threshold;
}
return 0;
}

2
net/mac80211/debugfs_netdev.c
View file

@ -443,6 +443,7 @@ IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol,
IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,
u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);
IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC);
IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC);
#endif
@ -581,6 +582,7 @@ static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
MESHPARAMS_ADD(dot11MeshHWMPRootMode);
MESHPARAMS_ADD(dot11MeshHWMPRannInterval);
MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol);
MESHPARAMS_ADD(rssi_threshold);
#undef MESHPARAMS_ADD
}
#endif

16
net/mac80211/mesh_plink.c
View file

@ -31,6 +31,11 @@
#define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout)
#define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks)
#define sta_meets_rssi_threshold(sta, sdata) \
(sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\
(s8) -ewma_read(&sta->avg_signal) > \
sdata->u.mesh.mshcfg.rssi_threshold)
enum plink_event {
PLINK_UNDEFINED,
OPN_ACPT,
@ -301,7 +306,8 @@ void mesh_neighbour_update(u8 *hw_addr, u32 rates,
if (mesh_peer_accepts_plinks(elems) &&
sta->plink_state == NL80211_PLINK_LISTEN &&
sdata->u.mesh.accepting_plinks &&
sdata->u.mesh.mshcfg.auto_open_plinks)
sdata->u.mesh.mshcfg.auto_open_plinks &&
sta_meets_rssi_threshold(sta, sdata))
mesh_plink_open(sta);
rcu_read_unlock();
@ -531,6 +537,14 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
return;
}
if (ftype == WLAN_SP_MESH_PEERING_OPEN &&
!sta_meets_rssi_threshold(sta, sdata)) {
mpl_dbg("Mesh plink: %pM does not meet rssi threshold\n",
sta->sta.addr);
rcu_read_unlock();
return;
}
if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) {
mpl_dbg("Mesh plink: Action frame from non-authed peer\n");
rcu_read_unlock();