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implement station inactivity timeout

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After the max station inactivity has expired, a probe request
(a data null frame) is sent to the station. It the station does
not ACK this frame, it is removed from the WTP.

Note: inactivity timeout is not the same as the CAPWAP Idle Timeout.
The CAPWAP Idle Timeout would remove a station due to inactivity
even when it is still reachable from the WTP. In contrast, the
inactivity timeout probes whether the station is still present
and only removes it when not.
This commit is contained in:
Andreas Schultz
2016-04-07 15:15:50 +02:00
parent bca5c91ae1
commit 813f24b8ac
9 changed files with 432 additions and 38 deletions
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24
src/common/binding/ieee80211/ieee80211.c
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@ -764,3 +764,27 @@ int ieee80211_create_deauthentication(uint8_t* buffer, int length, struct ieee80
return (int)((uint8_t*)&header->deauthetication.ie[0] - (uint8_t*)header);
}
/* */
int ieee80211_create_disassociation(uint8_t* buffer, int length,
struct ieee80211_disassociation_params* params)
{
struct ieee80211_header_mgmt* header;
ASSERT(buffer != NULL);
/* */
header = (struct ieee80211_header_mgmt*)buffer;
/* Management header frame */
header->framecontrol = IEEE80211_FRAME_CONTROL(IEEE80211_FRAMECONTROL_TYPE_MGMT,
IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_DISASSOCIATION);
header->durationid = __cpu_to_le16(0);
memcpy(header->da, params->station, ETH_ALEN);
memcpy(header->sa, params->bssid, ETH_ALEN);
memcpy(header->bssid, params->bssid, ETH_ALEN);
header->sequencecontrol = __cpu_to_le16(0);
header->disassociation.reasoncode = __cpu_to_le16(params->reasoncode);
return (int)((uint8_t*)&header->disassociation.ie[0] - (uint8_t*)header);
}