According to IEEE80211s standard a mesh peering is always
associatedwith two mesh STAs. Both mesh STAs have their own mesh power
mode forthe mesh peering. This power mode is called as link-specific
powermode.
local_ps_mode field has been added to sta_info structure to
representlink-specific power mode at this station for station
represented bythis structure.
According to this standard mesh STA shall indicate its non-peer
meshpower mode with the Power Management field in the Frame Control
fieldand the Mesh Power Save Level field in the QoS Control field in
groupaddressed Mesh Data frames.
And mesh STA shall indicate link-specific power mode with the
PowerManagement field in the Frame Control field and the Mesh Power
SaveLevel field in the QoS Control field in all transmitted
individuallyaddressed Mesh Data frames and QoS Null frames.
The Power Management field set to 1 and the Mesh Power Save
Levelsubfield set to 0 indicate that the mesh STA is operating in
lightmode. The Power Management field set to 0 and the mesh Power
SaveLevel subfield set to 1 indicate that the mesh STA is operating
indeep sleep mode. The Mesh Power Save Level subfield is reserved,
ifthe Power Management subfield is set to 0.
Signed-off-by: Ivan Bezyazychnyy
<ivan.bezyazychnyy@xxxxxxxxx>Signed-off-by: Mike Krinkin
<krinkin.m.u@xxxxxxxxx>Signed-off-by: Max Filippov
<jcmvbkbc@xxxxxxxxx>Signed-off-by: Marco Porsch
<marco.porsch@xxxxxxxxxxxxxxxxxxx>--- include/linux/ieee80211.h | 3
+++ net/mac80211/sta_info.h | 2 ++ net/mac80211/tx.c |
43 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 48
insertions(+), 0 deletions(-)
diff --git a/include/linux/ieee80211.h
b/include/linux/ieee80211.hindex 48363c3..483fa46 100644---
a/include/linux/ieee80211.h+++ b/include/linux/ieee80211.h@@ -133,6
+133,9 @@ /* Mesh Control 802.11s */ #define
IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT 0x0100 +/* mesh power save
level subfield mask */+#define IEEE80211_QOS_CTL_MESH_PS_LEVEL
0x0200+ /* U-APSD queue for WMM IEs sent by AP */ #define
IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7) #define
IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK 0x0fdiff --git
a/net/mac80211/sta_info.h b/net/mac80211/sta_info.hindex
8c8ce05..8742668 100644--- a/net/mac80211/sta_info.h+++
b/net/mac80211/sta_info.h@@ -250,6 +250,7 @@ struct sta_ampdu_mlme {
* @plink_retries: Retries in establishment * @ignore_plink_timer:
ignore the peer-link timer (used internally) * @plink_state: peer
link state+ * @local_ps_mode: local link-specific power save mode *
@plink_timeout: timeout of peer link * @plink_timer: peer link watch
timer * @plink_timer_was_running: used by suspend/resume to restore
timers@@ -338,6 +339,7 @@ struct sta_info { bool ignore_plink_timer;
bool plink_timer_was_running; enum nl80211_plink_state
plink_state;+ enum nl80211_mesh_power_mode local_ps_mode; u32
plink_timeout; struct timer_list plink_timer; #endifdiff --git
a/net/mac80211/tx.c b/net/mac80211/tx.cindex 48bbb96..500c3ce
100644--- a/net/mac80211/tx.c+++ b/net/mac80211/tx.c@@ -1033,6
+1033,47 @@ ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data
*tx) return TX_CONTINUE; } +static enum
nl80211_mesh_power_mode+ieee80211s_get_ps_mode(struct
ieee80211_sub_if_data *sdata,+ struct ieee80211_hdr *hdr)+{+ enum
nl80211_mesh_power_mode pm = NL80211_MESH_POWER_ACTIVE;+ struct
mesh_path *mpath;++ if (is_multicast_ether_addr(hdr->addr1)) {+ pm =
(enum nl80211_mesh_power_mode)+ sdata->u.mesh.mshcfg.power_mode;+ }
else {+ rcu_read_lock();+ mpath = mesh_path_lookup(hdr->addr3,
sdata);+ if (mpath) {+ pm =
mpath->next_hop->local_ps_mode;+ }+ rcu_read_unlock();+ }++ return
pm;+}++static void ieee80211_set_mesh_ps_fields(struct
ieee80211_sub_if_data *sdata,+ struct ieee80211_hdr *hdr)+{+ if
(ieee80211_vif_is_mesh(&sdata->vif) &&+
(ieee80211_is_data_qos(hdr->frame_control)+ ||
ieee80211_is_qos_nullfunc(hdr->frame_control))) {+ enum
nl80211_mesh_power_mode+ pm = ieee80211s_get_ps_mode(sdata,
hdr);+ if (pm != NL80211_MESH_POWER_ACTIVE) {+ __le16 *qc = (__le16
*) ieee80211_get_qos_ctl(hdr);+ hdr->frame_control |=
cpu_to_le16(IEEE80211_FCTL_PM);+ if (pm ==
NL80211_MESH_POWER_DEEP_SLEEP) {+ *qc |=
cpu_to_le16(+ IEEE80211_QOS_CTL_MESH_PS_LEVEL);+ }+ }+ }+}+ /*
actual transmit path */ static bool ieee80211_tx_prep_agg(struct
ieee80211_tx_data *tx,@@ -1437,6 +1478,8 @@ void ieee80211_xmit(struct
ieee80211_sub_if_data *sdata, struct sk_buff *skb) }
ieee80211_set_qos_hdr(sdata, skb);+ if
(ieee80211_vif_is_mesh(&sdata->vif))+ ieee80211_set_mesh_ps_fields(sdata,
hdr); ieee80211_tx(sdata, skb, false); rcu_read_unlock(); }--
1.7.3.4
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