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{nl,mac}80211: report gate connectivity in station info 

Capture the current state of gate connectivity from the mesh
formation field in mesh config whenever we receive a beacon,
and report that via GET_STATION.  This allows applications
doing mesh peering in userspace to make peering decisions
based on peers' current upstream connectivity.

Signed-off-by: Bob Copeland <bobcopeland@fb.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Bob Copeland 2018-10-25 15:48:53 -04:00 committed by Johannes Berg
parent 4a6ecd35f9
commit dbdaee7aa6
7 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/ieee80211.h
View File

@ -812,6 +812,8 @@ enum mesh_config_capab_flags {
IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL = 0x40,
};
#define IEEE80211_MESHCONF_FORM_CONNECTED_TO_GATE 0x1
/**
* mesh channel switch parameters element's flag indicator
*

3
include/net/cfg80211.h
View File

@ -1296,6 +1296,7 @@ struct cfg80211_tid_stats {
* @rx_beacon: number of beacons received from this peer
* @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received
* from this peer
* @connected_to_gate: true if mesh STA has a path to mesh gate
* @rx_duration: aggregate PPDU duration(usecs) for all the frames from a peer
* @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last
* (IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs.
@ -1350,6 +1351,8 @@ struct station_info {
u64 rx_beacon;
u64 rx_duration;
u8 rx_beacon_signal_avg;
u8 connected_to_gate;
struct cfg80211_tid_stats *pertid;
s8 ack_signal;
s8 avg_ack_signal;

3
include/uapi/linux/nl80211.h
View File

@ -3116,6 +3116,8 @@ enum nl80211_sta_bss_param {
* with an FCS error (u32, from this station). This count may not include
* some packets with an FCS error due to TA corruption. Hence this counter
* might not be fully accurate.
* @NL80211_STA_INFO_CONNECTED_TO_GATE: set to true if STA has a path to a
* mesh gate
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@ -3158,6 +3160,7 @@ enum nl80211_sta_info {
NL80211_STA_INFO_ACK_SIGNAL_AVG,
NL80211_STA_INFO_RX_MPDUS,
NL80211_STA_INFO_FCS_ERROR_COUNT,
NL80211_STA_INFO_CONNECTED_TO_GATE,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,

3
net/mac80211/mesh_plink.c
View File

@ -590,6 +590,9 @@ void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
if (!sta)
goto out;
sta->mesh->connected_to_gate = elems->mesh_config->meshconf_form &
IEEE80211_MESHCONF_FORM_CONNECTED_TO_GATE;
if (mesh_peer_accepts_plinks(elems) &&
sta->mesh->plink_state == NL80211_PLINK_LISTEN &&
sdata->u.mesh.accepting_plinks &&

4
net/mac80211/sta_info.c
View File

@ -2264,7 +2264,8 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo,
BIT_ULL(NL80211_STA_INFO_PLINK_STATE) |
BIT_ULL(NL80211_STA_INFO_LOCAL_PM) |
BIT_ULL(NL80211_STA_INFO_PEER_PM) |
BIT_ULL(NL80211_STA_INFO_NONPEER_PM);
BIT_ULL(NL80211_STA_INFO_NONPEER_PM) |
BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE);
sinfo->llid = sta->mesh->llid;
sinfo->plid = sta->mesh->plid;
@ -2276,6 +2277,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo,
sinfo->local_pm = sta->mesh->local_pm;
sinfo->peer_pm = sta->mesh->peer_pm;
sinfo->nonpeer_pm = sta->mesh->nonpeer_pm;
sinfo->connected_to_gate = sta->mesh->connected_to_gate;
#endif
}

2
net/mac80211/sta_info.h
View File

@ -364,6 +364,7 @@ DECLARE_EWMA(mesh_fail_avg, 20, 8)
* @nonpeer_pm: STA power save mode towards non-peer neighbors
* @processed_beacon: set to true after peer rates and capabilities are
* processed
* @connected_to_gate: true if mesh STA has a path to a mesh gate
* @fail_avg: moving percentage of failed MSDUs
*/
struct mesh_sta {
@ -381,6 +382,7 @@ struct mesh_sta {
u8 plink_retries;
bool processed_beacon;
bool connected_to_gate;
enum nl80211_plink_state plink_state;
u32 plink_timeout;

1
net/wireless/nl80211.c
View File

@ -4883,6 +4883,7 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
PUT_SINFO(LOCAL_PM, local_pm, u32);
PUT_SINFO(PEER_PM, peer_pm, u32);
PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);