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nl80211: Add support for STA opmode change events

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The nl80211 driver can report STA_OPMODE notification event as soon as
it receives an HT/VHT Action frame about modification of station's SMPS
mode/bandwidth/RX NSS. Add support to parse such events.

Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
This commit is contained in:
Tamizh chelvam 2018-03-09 18:19:08 +05:30 committed by Jouni Malinen
parent 72123a84cb
commit e8ada1600f
3 changed files with 108 additions and 0 deletions
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33
src/drivers/driver.h
View file

@ -1877,6 +1877,17 @@ enum wnm_oper {
WNM_SLEEP_TFS_IE_DEL /* AP delete the TFS IE */
};
/* enum smps_mode - SMPS mode definitions */
enum smps_mode {
SMPS_AUTOMATIC,
SMPS_OFF,
SMPS_DYNAMIC,
SMPS_STATIC,
/* Keep last */
SMPS_INVALID,
};
/* enum chan_width - Channel width definitions */
enum chan_width {
CHAN_WIDTH_20_NOHT,
@ -4568,6 +4579,12 @@ enum wpa_event_type {
* indicates the completion of IEEE 802.11 association.
*/
EVENT_PORT_AUTHORIZED,
/**
* EVENT_STATION_OPMODE_CHANGED - Notify STA's HT/VHT operation mode
* change event.
*/
EVENT_STATION_OPMODE_CHANGED,
};
@ -5373,6 +5390,22 @@ union wpa_event_data {
/* For EVENT_EXTERNAL_AUTH */
struct external_auth external_auth;
/**
* struct sta_opmode - Station's operation mode change event
* @addr: The station MAC address
* @smps_mode: SMPS mode of the station
* @chan_width: Channel width of the station
* @rx_nss: RX_NSS of the station
*
* This is used as data with EVENT_STATION_OPMODE_CHANGED.
*/
struct sta_opmode {
const u8 *addr;
enum smps_mode smps_mode;
enum chan_width chan_width;
u8 rx_nss;
} sta_opmode;
};
/**

1
src/drivers/driver_common.c
View file

@ -84,6 +84,7 @@ const char * event_to_string(enum wpa_event_type event)
E2S(DFS_PRE_CAC_EXPIRED);
E2S(EXTERNAL_AUTH);
E2S(PORT_AUTHORIZED);
E2S(STATION_OPMODE_CHANGED);
}
return "UNKNOWN";

74
src/drivers/driver_nl80211_event.c
View file

@ -132,6 +132,7 @@ static const char * nl80211_command_to_string(enum nl80211_commands cmd)
C2S(NL80211_CMD_ADD_TX_TS)
C2S(NL80211_CMD_DEL_TX_TS)
C2S(NL80211_CMD_EXTERNAL_AUTH)
C2S(NL80211_CMD_STA_OPMODE_CHANGED)
default:
return "NL80211_CMD_UNKNOWN";
}
@ -2246,6 +2247,76 @@ static void nl80211_port_authorized(struct wpa_driver_nl80211_data *drv,
}
static void nl80211_sta_opmode_change_event(struct wpa_driver_nl80211_data *drv,
struct nlattr **tb)
{
union wpa_event_data ed;
u8 smps_mode, max_bw;
if (!tb[NL80211_ATTR_MAC] ||
(!tb[NL80211_ATTR_CHANNEL_WIDTH] &&
!tb[NL80211_ATTR_SMPS_MODE] &&
!tb[NL80211_ATTR_NSS]))
return;
ed.sta_opmode.smps_mode = SMPS_INVALID;
ed.sta_opmode.chan_width = CHAN_WIDTH_UNKNOWN;
ed.sta_opmode.rx_nss = 0xff;
ed.sta_opmode.addr = nla_data(tb[NL80211_ATTR_MAC]);
if (tb[NL80211_ATTR_SMPS_MODE]) {
smps_mode = nla_get_u32(tb[NL80211_ATTR_SMPS_MODE]);
switch (smps_mode) {
case NL80211_SMPS_OFF:
ed.sta_opmode.smps_mode = SMPS_OFF;
break;
case NL80211_SMPS_STATIC:
ed.sta_opmode.smps_mode = SMPS_STATIC;
break;
case NL80211_SMPS_DYNAMIC:
ed.sta_opmode.smps_mode = SMPS_DYNAMIC;
break;
default:
ed.sta_opmode.smps_mode = SMPS_INVALID;
break;
}
}
if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
max_bw = nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]);
switch (max_bw) {
case NL80211_CHAN_WIDTH_20_NOHT:
ed.sta_opmode.chan_width = CHAN_WIDTH_20_NOHT;
break;
case NL80211_CHAN_WIDTH_20:
ed.sta_opmode.chan_width = CHAN_WIDTH_20;
break;
case NL80211_CHAN_WIDTH_40:
ed.sta_opmode.chan_width = CHAN_WIDTH_40;
break;
case NL80211_CHAN_WIDTH_80:
ed.sta_opmode.chan_width = CHAN_WIDTH_80;
break;
case NL80211_CHAN_WIDTH_80P80:
ed.sta_opmode.chan_width = CHAN_WIDTH_80P80;
break;
case NL80211_CHAN_WIDTH_160:
ed.sta_opmode.chan_width = CHAN_WIDTH_160;
break;
default:
ed.sta_opmode.chan_width = CHAN_WIDTH_UNKNOWN;
break;
}
}
if (tb[NL80211_ATTR_NSS])
ed.sta_opmode.rx_nss = nla_get_u8(tb[NL80211_ATTR_NSS]);
wpa_supplicant_event(drv->ctx, EVENT_STATION_OPMODE_CHANGED, &ed);
}
static void do_process_drv_event(struct i802_bss *bss, int cmd,
struct nlattr **tb)
{
@ -2447,6 +2518,9 @@ static void do_process_drv_event(struct i802_bss *bss, int cmd,
case NL80211_CMD_PORT_AUTHORIZED:
nl80211_port_authorized(drv, tb);
break;
case NL80211_CMD_STA_OPMODE_CHANGED:
nl80211_sta_opmode_change_event(drv, tb);
break;
default:
wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event "
"(cmd=%d)", cmd);