microsoft
/
WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
WSL2-Linux-Kernel/net/mac80211/mesh_ps.c

606 строки
16 KiB
C
Исходник Обычный вид История

mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
/*
* Copyright 2012-2013, Marco Porsch <marco.porsch@s2005.tu-chemnitz.de>
* Copyright 2012-2013, cozybit Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include "mesh.h"
#include "wme.h"
/* mesh PS management */
/**
* mps_qos_null_get - create pre-addressed QoS Null frame for mesh powersave
*/
static struct sk_buff *mps_qos_null_get(struct sta_info *sta)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_local *local = sdata->local;
struct ieee80211_hdr *nullfunc; /* use 4addr header */
struct sk_buff *skb;
int size = sizeof(*nullfunc);
__le16 fc;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + size + 2);
if (!skb)
return NULL;
skb_reserve(skb, local->hw.extra_tx_headroom);
networking: make skb_put & friends return void pointers It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 15:29:21 +03:00
nullfunc = skb_put(skb, size);
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
ieee80211_fill_mesh_addresses(nullfunc, &fc, sta->sta.addr,
sdata->vif.addr);
nullfunc->frame_control = fc;
nullfunc->duration_id = 0;
mac80211: clear sequence/fragment number in QoS-null frames Avoid leaking data by sending uninitialized memory and setting an invalid (non-zero) fragment number (the sequence number is ignored anyway) by setting the seq_ctrl field to zero. Cc: stable@vger.kernel.org Fixes: 3f52b7e328c5 ("mac80211: mesh power save basics") Fixes: ce662b44ce22 ("mac80211: send (QoS) Null if no buffered frames") Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-03-04 16:46:53 +04:00
nullfunc->seq_ctrl = 0;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
/* no address resolution for this frame -> set addr 1 immediately */
memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
networking: convert many more places to skb_put_zero() There were many places that my previous spatch didn't find, as pointed out by yuan linyu in various patches. The following spatch found many more and also removes the now unnecessary casts: @@ identifier p, p2; expression len; expression skb; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_zero(skb, len); | -p = (t)skb_put(skb, len); +p = skb_put_zero(skb, len); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, len); | -memset(p, 0, len); ) @@ type t, t2; identifier p, p2; expression skb; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_zero(skb, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_zero(skb, sizeof(t)); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, sizeof(*p)); | -memset(p, 0, sizeof(*p)); ) @@ expression skb, len; @@ -memset(skb_put(skb, len), 0, len); +skb_put_zero(skb, len); Apply it to the tree (with one manual fixup to keep the comment in vxlan.c, which spatch removed.) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 15:29:19 +03:00
skb_put_zero(skb, 2); /* append QoS control field */
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
ieee80211_mps_set_frame_flags(sdata, sta, nullfunc);
return skb;
}
/**
* mps_qos_null_tx - send a QoS Null to indicate link-specific power mode
*/
static void mps_qos_null_tx(struct sta_info *sta)
{
struct sk_buff *skb;
skb = mps_qos_null_get(sta);
if (!skb)
return;
mps_dbg(sta->sdata, "announcing peer-specific power mode to %pM\n",
sta->sta.addr);
/* don't unintentionally start a MPSP */
if (!test_sta_flag(sta, WLAN_STA_PS_STA)) {
u8 *qc = ieee80211_get_qos_ctl((void *) skb->data);
qc[0] |= IEEE80211_QOS_CTL_EOSP;
}
ieee80211_tx_skb(sta->sdata, skb);
}
/**
* ieee80211_mps_local_status_update - track status of local link-specific PMs
*
* @sdata: local mesh subif
*
* sets the non-peer power mode and triggers the driver PS (re-)configuration
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
* Return BSS_CHANGED_BEACON if a beacon update is necessary.
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
*/
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
u32 ieee80211_mps_local_status_update(struct ieee80211_sub_if_data *sdata)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct sta_info *sta;
bool peering = false;
int light_sleep_cnt = 0;
int deep_sleep_cnt = 0;
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
u32 changed = 0;
enum nl80211_mesh_power_mode nonpeer_pm;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
rcu_read_lock();
list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
if (sdata != sta->sdata)
continue;
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
switch (sta->mesh->plink_state) {
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
case NL80211_PLINK_OPN_SNT:
case NL80211_PLINK_OPN_RCVD:
case NL80211_PLINK_CNF_RCVD:
peering = true;
break;
case NL80211_PLINK_ESTAB:
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
if (sta->mesh->local_pm == NL80211_MESH_POWER_LIGHT_SLEEP)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
light_sleep_cnt++;
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
else if (sta->mesh->local_pm == NL80211_MESH_POWER_DEEP_SLEEP)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
deep_sleep_cnt++;
break;
default:
break;
}
}
rcu_read_unlock();
/*
* Set non-peer mode to active during peering/scanning/authentication
* (see IEEE802.11-2012 13.14.8.3). The non-peer mesh power mode is
* deep sleep if the local STA is in light or deep sleep towards at
* least one mesh peer (see 13.14.3.1). Otherwise, set it to the
* user-configured default value.
*/
if (peering) {
mps_dbg(sdata, "setting non-peer PM to active for peering\n");
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
} else if (light_sleep_cnt || deep_sleep_cnt) {
mps_dbg(sdata, "setting non-peer PM to deep sleep\n");
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
nonpeer_pm = NL80211_MESH_POWER_DEEP_SLEEP;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
} else {
mps_dbg(sdata, "setting non-peer PM to user value\n");
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
nonpeer_pm = ifmsh->mshcfg.power_mode;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
}
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
/* need update if sleep counts move between 0 and non-zero */
if (ifmsh->nonpeer_pm != nonpeer_pm ||
!ifmsh->ps_peers_light_sleep != !light_sleep_cnt ||
!ifmsh->ps_peers_deep_sleep != !deep_sleep_cnt)
changed = BSS_CHANGED_BEACON;
ifmsh->nonpeer_pm = nonpeer_pm;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
ifmsh->ps_peers_light_sleep = light_sleep_cnt;
ifmsh->ps_peers_deep_sleep = deep_sleep_cnt;
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
return changed;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
}
/**
* ieee80211_mps_set_sta_local_pm - set local PM towards a mesh STA
*
* @sta: mesh STA
* @pm: the power mode to set
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
* Return BSS_CHANGED_BEACON if a beacon update is in order.
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
*/
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
u32 ieee80211_mps_set_sta_local_pm(struct sta_info *sta,
enum nl80211_mesh_power_mode pm)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
if (sta->mesh->local_pm == pm)
mac80211: fixes for mesh powersave logic This patch fixes errors in the mesh powersave logic which cause that remote peers do not get peer power mode change notifications and mesh peer service periods (MPSPs) got stuck. When closing a peer link, set the (now invalid) peer-specific power mode to 'unknown'. Avoid overhead when local power mode is unchanged. Reliably clear MPSP flags on peering status update. Avoid MPSP flags getting stuck by not requesting a further MPSP ownership if we already are an MPSP owner. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-15 14:29:24 +04:00
return 0;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
mps_dbg(sdata, "local STA operates in mode %d with %pM\n",
pm, sta->sta.addr);
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
sta->mesh->local_pm = pm;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
/*
* announce peer-specific power mode transition
* (see IEEE802.11-2012 13.14.3.2 and 13.14.3.3)
*/
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
mps_qos_null_tx(sta);
mac80211: consolidate MBSS change notification A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-14 00:14:19 +04:00
return ieee80211_mps_local_status_update(sdata);
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
}
/**
* ieee80211_mps_set_frame_flags - set mesh PS flags in FC (and QoS Control)
*
* @sdata: local mesh subif
* @sta: mesh STA
* @hdr: 802.11 frame header
*
* see IEEE802.11-2012 8.2.4.1.7 and 8.2.4.5.11
*
* NOTE: sta must be given when an individually-addressed QoS frame header
* is handled, for group-addressed and management frames it is not used
*/
void ieee80211_mps_set_frame_flags(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta,
struct ieee80211_hdr *hdr)
{
enum nl80211_mesh_power_mode pm;
u8 *qc;
if (WARN_ON(is_unicast_ether_addr(hdr->addr1) &&
ieee80211_is_data_qos(hdr->frame_control) &&
!sta))
return;
if (is_unicast_ether_addr(hdr->addr1) &&
ieee80211_is_data_qos(hdr->frame_control) &&
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
sta->mesh->plink_state == NL80211_PLINK_ESTAB)
pm = sta->mesh->local_pm;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
else
pm = sdata->u.mesh.nonpeer_pm;
if (pm == NL80211_MESH_POWER_ACTIVE)
hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_PM);
else
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
if (!ieee80211_is_data_qos(hdr->frame_control))
return;
qc = ieee80211_get_qos_ctl(hdr);
if ((is_unicast_ether_addr(hdr->addr1) &&
pm == NL80211_MESH_POWER_DEEP_SLEEP) ||
(is_multicast_ether_addr(hdr->addr1) &&
sdata->u.mesh.ps_peers_deep_sleep > 0))
qc[1] |= (IEEE80211_QOS_CTL_MESH_PS_LEVEL >> 8);
else
qc[1] &= ~(IEEE80211_QOS_CTL_MESH_PS_LEVEL >> 8);
}
/**
* ieee80211_mps_sta_status_update - update buffering status of neighbor STA
*
* @sta: mesh STA
*
* called after change of peering status or non-peer/peer-specific power mode
*/
void ieee80211_mps_sta_status_update(struct sta_info *sta)
{
enum nl80211_mesh_power_mode pm;
bool do_buffer;
mac80211: prevent the buffering or frame transmission to non-assoc mesh STA This patch is intended to avoid the buffering to non-assoc mesh STA and also to avoid the triggering of frame to non-assoc mesh STA which could cause kernel panic in specific hw. One of the examples, is kernel panic happens to ath9k if user space inserts the mesh STA and not proceed with the SAE and AMPE, and later the same mesh STA is detected again. The sta_state of the mesh STA remains at IEEE80211_STA_NONE and if the ieee80211_sta_ps_deliver_wakeup is called and subsequently the ath_tx_aggr_wakeup, the kernel panic due to ath_tx_node_init is not called before to initialize the require data structures. This issue is reported by Cedric Voncken before. http://www.spinics.net/lists/linux-wireless/msg106342.html [<831ea6b4>] ath_tx_aggr_wakeup+0x44/0xcc [ath9k] [<83084214>] ieee80211_sta_ps_deliver_wakeup+0xb8/0x208 [mac80211] [<830b9824>] ieee80211_mps_sta_status_update+0x94/0x108 [mac80211] [<83099398>] ieee80211_sta_ps_transition+0xc94/0x34d8 [mac80211] [<8022399c>] nf_iterate+0x98/0x104 [<8309bb60>] ieee80211_sta_ps_transition+0x345c/0x34d8 [mac80211] Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-07-19 13:37:39 +04:00
/* For non-assoc STA, prevent buffering or frame transmission */
if (sta->sta_state < IEEE80211_STA_ASSOC)
return;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
/*
* use peer-specific power mode if peering is established and the
* peer's power mode is known
*/
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
if (sta->mesh->plink_state == NL80211_PLINK_ESTAB &&
sta->mesh->peer_pm != NL80211_MESH_POWER_UNKNOWN)
pm = sta->mesh->peer_pm;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
else
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
pm = sta->mesh->nonpeer_pm;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
do_buffer = (pm != NL80211_MESH_POWER_ACTIVE);
mac80211: fixes for mesh powersave logic This patch fixes errors in the mesh powersave logic which cause that remote peers do not get peer power mode change notifications and mesh peer service periods (MPSPs) got stuck. When closing a peer link, set the (now invalid) peer-specific power mode to 'unknown'. Avoid overhead when local power mode is unchanged. Reliably clear MPSP flags on peering status update. Avoid MPSP flags getting stuck by not requesting a further MPSP ownership if we already are an MPSP owner. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-15 14:29:24 +04:00
/* clear the MPSP flags for non-peers or active STA */
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) {
mac80211: fixes for mesh powersave logic This patch fixes errors in the mesh powersave logic which cause that remote peers do not get peer power mode change notifications and mesh peer service periods (MPSPs) got stuck. When closing a peer link, set the (now invalid) peer-specific power mode to 'unknown'. Avoid overhead when local power mode is unchanged. Reliably clear MPSP flags on peering status update. Avoid MPSP flags getting stuck by not requesting a further MPSP ownership if we already are an MPSP owner. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-15 14:29:24 +04:00
clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
clear_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
} else if (!do_buffer) {
clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
}
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
/* Don't let the same PS state be set twice */
if (test_sta_flag(sta, WLAN_STA_PS_STA) == do_buffer)
return;
if (do_buffer) {
set_sta_flag(sta, WLAN_STA_PS_STA);
atomic_inc(&sta->sdata->u.mesh.ps.num_sta_ps);
mps_dbg(sta->sdata, "start PS buffering frames towards %pM\n",
sta->sta.addr);
} else {
ieee80211_sta_ps_deliver_wakeup(sta);
}
}
static void mps_set_sta_peer_pm(struct sta_info *sta,
struct ieee80211_hdr *hdr)
{
enum nl80211_mesh_power_mode pm;
u8 *qc = ieee80211_get_qos_ctl(hdr);
/*
* Test Power Management field of frame control (PW) and
* mesh power save level subfield of QoS control field (PSL)
*
* | PM | PSL| Mesh PM |
* +----+----+---------+
* | 0 |Rsrv| Active |
* | 1 | 0 | Light |
* | 1 | 1 | Deep |
*/
if (ieee80211_has_pm(hdr->frame_control)) {
if (qc[1] & (IEEE80211_QOS_CTL_MESH_PS_LEVEL >> 8))
pm = NL80211_MESH_POWER_DEEP_SLEEP;
else
pm = NL80211_MESH_POWER_LIGHT_SLEEP;
} else {
pm = NL80211_MESH_POWER_ACTIVE;
}
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
if (sta->mesh->peer_pm == pm)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
return;
mps_dbg(sta->sdata, "STA %pM enters mode %d\n",
sta->sta.addr, pm);
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
sta->mesh->peer_pm = pm;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
ieee80211_mps_sta_status_update(sta);
}
static void mps_set_sta_nonpeer_pm(struct sta_info *sta,
struct ieee80211_hdr *hdr)
{
enum nl80211_mesh_power_mode pm;
if (ieee80211_has_pm(hdr->frame_control))
pm = NL80211_MESH_POWER_DEEP_SLEEP;
else
pm = NL80211_MESH_POWER_ACTIVE;
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
if (sta->mesh->nonpeer_pm == pm)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
return;
mps_dbg(sta->sdata, "STA %pM sets non-peer mode to %d\n",
sta->sta.addr, pm);
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
sta->mesh->nonpeer_pm = pm;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
ieee80211_mps_sta_status_update(sta);
}
/**
* ieee80211_mps_rx_h_sta_process - frame receive handler for mesh powersave
*
* @sta: STA info that transmitted the frame
* @hdr: IEEE 802.11 (QoS) Header
*/
void ieee80211_mps_rx_h_sta_process(struct sta_info *sta,
struct ieee80211_hdr *hdr)
{
if (is_unicast_ether_addr(hdr->addr1) &&
ieee80211_is_data_qos(hdr->frame_control)) {
/*
* individually addressed QoS Data/Null frames contain
* peer link-specific PS mode towards the local STA
*/
mps_set_sta_peer_pm(sta, hdr);
/* check for mesh Peer Service Period trigger frames */
ieee80211_mpsp_trigger_process(ieee80211_get_qos_ctl(hdr),
sta, false, false);
} else {
/*
* can only determine non-peer PS mode
* (see IEEE802.11-2012 8.2.4.1.7)
*/
mps_set_sta_nonpeer_pm(sta, hdr);
}
}
/* mesh PS frame release */
static void mpsp_trigger_send(struct sta_info *sta, bool rspi, bool eosp)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct sk_buff *skb;
struct ieee80211_hdr *nullfunc;
struct ieee80211_tx_info *info;
u8 *qc;
skb = mps_qos_null_get(sta);
if (!skb)
return;
nullfunc = (struct ieee80211_hdr *) skb->data;
if (!eosp)
nullfunc->frame_control |=
cpu_to_le16(IEEE80211_FCTL_MOREDATA);
/*
* | RSPI | EOSP | MPSP triggering |
* +------+------+--------------------+
* | 0 | 0 | local STA is owner |
* | 0 | 1 | no MPSP (MPSP end) |
* | 1 | 0 | both STA are owner |
* | 1 | 1 | peer STA is owner | see IEEE802.11-2012 13.14.9.2
*/
qc = ieee80211_get_qos_ctl(nullfunc);
if (rspi)
qc[1] |= (IEEE80211_QOS_CTL_RSPI >> 8);
if (eosp)
qc[0] |= IEEE80211_QOS_CTL_EOSP;
info = IEEE80211_SKB_CB(skb);
info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER |
IEEE80211_TX_CTL_REQ_TX_STATUS;
mps_dbg(sdata, "sending MPSP trigger%s%s to %pM\n",
rspi ? " RSPI" : "", eosp ? " EOSP" : "", sta->sta.addr);
ieee80211_tx_skb(sdata, skb);
}
/**
* mpsp_qos_null_append - append QoS Null frame to MPSP skb queue if needed
*
* To properly end a mesh MPSP the last transmitted frame has to set the EOSP
* flag in the QoS Control field. In case the current tailing frame is not a
* QoS Data frame, append a QoS Null to carry the flag.
*/
static void mpsp_qos_null_append(struct sta_info *sta,
struct sk_buff_head *frames)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct sk_buff *new_skb, *skb = skb_peek_tail(frames);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct ieee80211_tx_info *info;
if (ieee80211_is_data_qos(hdr->frame_control))
return;
new_skb = mps_qos_null_get(sta);
if (!new_skb)
return;
mps_dbg(sdata, "appending QoS Null in MPSP towards %pM\n",
sta->sta.addr);
/*
* This frame has to be transmitted last. Assign lowest priority to
* make sure it cannot pass other frames when releasing multiple ACs.
*/
new_skb->priority = 1;
skb_set_queue_mapping(new_skb, IEEE80211_AC_BK);
ieee80211_set_qos_hdr(sdata, new_skb);
info = IEEE80211_SKB_CB(new_skb);
info->control.vif = &sdata->vif;
info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
__skb_queue_tail(frames, new_skb);
}
/**
* mps_frame_deliver - transmit frames during mesh powersave
*
* @sta: STA info to transmit to
* @n_frames: number of frames to transmit. -1 for all
*/
static void mps_frame_deliver(struct sta_info *sta, int n_frames)
{
mac80211: fixes for mesh powersave logic This patch fixes errors in the mesh powersave logic which cause that remote peers do not get peer power mode change notifications and mesh peer service periods (MPSPs) got stuck. When closing a peer link, set the (now invalid) peer-specific power mode to 'unknown'. Avoid overhead when local power mode is unchanged. Reliably clear MPSP flags on peering status update. Avoid MPSP flags getting stuck by not requesting a further MPSP ownership if we already are an MPSP owner. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-15 14:29:24 +04:00
struct ieee80211_local *local = sta->sdata->local;
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
int ac;
struct sk_buff_head frames;
struct sk_buff *skb;
bool more_data = false;
skb_queue_head_init(&frames);
/* collect frame(s) from buffers */
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
while (n_frames != 0) {
skb = skb_dequeue(&sta->tx_filtered[ac]);
if (!skb) {
skb = skb_dequeue(
&sta->ps_tx_buf[ac]);
if (skb)
local->total_ps_buffered--;
}
if (!skb)
break;
n_frames--;
__skb_queue_tail(&frames, skb);
}
if (!skb_queue_empty(&sta->tx_filtered[ac]) ||
!skb_queue_empty(&sta->ps_tx_buf[ac]))
more_data = true;
}
/* nothing to send? -> EOSP */
if (skb_queue_empty(&frames)) {
mpsp_trigger_send(sta, false, true);
return;
}
/* in a MPSP make sure the last skb is a QoS Data frame */
if (test_sta_flag(sta, WLAN_STA_MPSP_OWNER))
mpsp_qos_null_append(sta, &frames);
mps_dbg(sta->sdata, "sending %d frames to PS STA %pM\n",
skb_queue_len(&frames), sta->sta.addr);
/* prepare collected frames for transmission */
skb_queue_walk(&frames, skb) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (void *) skb->data;
/*
* Tell TX path to send this frame even though the
* STA may still remain is PS mode after this frame
* exchange.
*/
info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER;
if (more_data || !skb_queue_is_last(&frames, skb))
hdr->frame_control |=
cpu_to_le16(IEEE80211_FCTL_MOREDATA);
else
hdr->frame_control &=
cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
if (skb_queue_is_last(&frames, skb) &&
ieee80211_is_data_qos(hdr->frame_control)) {
u8 *qoshdr = ieee80211_get_qos_ctl(hdr);
/* MPSP trigger frame ends service period */
*qoshdr |= IEEE80211_QOS_CTL_EOSP;
info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
}
}
ieee80211_add_pending_skbs(local, &frames);
sta_info_recalc_tim(sta);
}
/**
* ieee80211_mpsp_trigger_process - track status of mesh Peer Service Periods
*
* @qc: QoS Control field
* @sta: peer to start a MPSP with
* @tx: frame was transmitted by the local STA
* @acked: frame has been transmitted successfully
*
* NOTE: active mode STA may only serve as MPSP owner
*/
void ieee80211_mpsp_trigger_process(u8 *qc, struct sta_info *sta,
bool tx, bool acked)
{
u8 rspi = qc[1] & (IEEE80211_QOS_CTL_RSPI >> 8);
u8 eosp = qc[0] & IEEE80211_QOS_CTL_EOSP;
if (tx) {
if (rspi && acked)
set_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
if (eosp)
clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
else if (acked &&
test_sta_flag(sta, WLAN_STA_PS_STA) &&
!test_and_set_sta_flag(sta, WLAN_STA_MPSP_OWNER))
mps_frame_deliver(sta, -1);
} else {
if (eosp)
clear_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
else if (sta->mesh->local_pm != NL80211_MESH_POWER_ACTIVE)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
set_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
if (rspi && !test_and_set_sta_flag(sta, WLAN_STA_MPSP_OWNER))
mps_frame_deliver(sta, -1);
}
}
/**
mac80211: fixes for mesh powersave logic This patch fixes errors in the mesh powersave logic which cause that remote peers do not get peer power mode change notifications and mesh peer service periods (MPSPs) got stuck. When closing a peer link, set the (now invalid) peer-specific power mode to 'unknown'. Avoid overhead when local power mode is unchanged. Reliably clear MPSP flags on peering status update. Avoid MPSP flags getting stuck by not requesting a further MPSP ownership if we already are an MPSP owner. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-15 14:29:24 +04:00
* ieee80211_mps_frame_release - release frames buffered due to mesh power save
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
*
* @sta: mesh STA
mac80211: fixes for mesh powersave logic This patch fixes errors in the mesh powersave logic which cause that remote peers do not get peer power mode change notifications and mesh peer service periods (MPSPs) got stuck. When closing a peer link, set the (now invalid) peer-specific power mode to 'unknown'. Avoid overhead when local power mode is unchanged. Reliably clear MPSP flags on peering status update. Avoid MPSP flags getting stuck by not requesting a further MPSP ownership if we already are an MPSP owner. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-15 14:29:24 +04:00
* @elems: IEs of beacon or probe response
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
*
* For peers if we have individually-addressed frames buffered or the peer
* indicates buffered frames, send a corresponding MPSP trigger frame. Since
* we do not evaluate the awake window duration, QoS Nulls are used as MPSP
* trigger frames. If the neighbour STA is not a peer, only send single frames.
*/
void ieee80211_mps_frame_release(struct sta_info *sta,
struct ieee802_11_elems *elems)
{
int ac, buffer_local = 0;
bool has_buffered = false;
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
has_buffered = ieee80211_check_tim(elems->tim, elems->tim_len,
mac80211: mesh: separate plid and aid concepts 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 in the aid we send. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-14 15:31:58 +03:00
sta->mesh->aid);
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
if (has_buffered)
mps_dbg(sta->sdata, "%pM indicates buffered frames\n",
sta->sta.addr);
/* only transmit to PS STA with announced, non-zero awake window */
if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
(!elems->awake_window || !le16_to_cpu(*elems->awake_window)))
return;
mac80211: fixes for mesh powersave logic This patch fixes errors in the mesh powersave logic which cause that remote peers do not get peer power mode change notifications and mesh peer service periods (MPSPs) got stuck. When closing a peer link, set the (now invalid) peer-specific power mode to 'unknown'. Avoid overhead when local power mode is unchanged. Reliably clear MPSP flags on peering status update. Avoid MPSP flags getting stuck by not requesting a further MPSP ownership if we already are an MPSP owner. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-15 14:29:24 +04:00
if (!test_sta_flag(sta, WLAN_STA_MPSP_OWNER))
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
buffer_local += skb_queue_len(&sta->ps_tx_buf[ac]) +
skb_queue_len(&sta->tx_filtered[ac]);
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
if (!has_buffered && !buffer_local)
return;
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-17 11:31:00 +03:00
if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-30 21:14:08 +04:00
mpsp_trigger_send(sta, has_buffered, !buffer_local);
else
mps_frame_deliver(sta, 1);
}