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GAS: End remain-on-channel due to delayed GAS comeback request

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During the sequence of exchanging GAS frames with the AP, the AP can
request to come back in X amount of time and resend the GAS request.

Previously, wpa_supplicant did not terminate the remain-on-channel
session, but rather waited until the requested comeback delay had
expired, and then tried to send the GAS frame (potentially to save the
time that is required to schedule a new remain on channel flow).

This might cause unnecessary idle time (can be close to 1000 ms) in
which the device might be off-channel. Ending the current
remain-on-channel session and then rescheduling makes better usage of
the time in this case.

End remain-on-channel session due to receiving a delayed GAS comeback
request from the AP.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
This commit is contained in:
Matti Gottlieb 2015-12-10 12:56:08 +02:00 committed by Jouni Malinen
parent dabdef9e04
commit 2c0d0ae370
1 changed files with 2 additions and 0 deletions
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2
wpa_supplicant/gas_query.c
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@ -319,6 +319,8 @@ static void gas_query_tx_comeback_req_delay(struct gas_query *gas,
{ {
unsigned int secs, usecs; unsigned int secs, usecs;
offchannel_send_action_done(gas->wpa_s);
secs = (comeback_delay * 1024) / 1000000; secs = (comeback_delay * 1024) / 1000000;
usecs = comeback_delay * 1024 - secs * 1000000; usecs = comeback_delay * 1024 - secs * 1000000;
wpa_printf(MSG_DEBUG, "GAS: Send comeback request to " MACSTR wpa_printf(MSG_DEBUG, "GAS: Send comeback request to " MACSTR