diff options
| author | Thomas Tsou <tom@tsou.cc> | 2013-11-14 15:28:23 -0500 |
|---|---|---|
| committer | Thomas Tsou <tom@tsou.cc> | 2013-11-15 23:35:07 -0500 |
| commit | 2d0c00bd3d8f52690aeb86001cb4a268fed59463 (patch) | |
| tree | adbe7398378fe18b7088f223f0553e072207994b /Transceiver52M | |
| parent | e90a42becce19e9adcbf648d34fec5332cebc5ba (diff) | |
Transceiver52M: Check time slot validity of incoming bursts
In errant cases, GSM core may send bursts with invalid slot values,
which is allowed by the GSM::Time object. If we find a burst like this
coming into the transceiver, then drop it immediately.
Signed-off-by: Thomas Tsou <tom@tsou.cc>
Diffstat (limited to 'Transceiver52M')
| -rw-r--r-- | Transceiver52M/Transceiver.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Transceiver52M/Transceiver.cpp b/Transceiver52M/Transceiver.cpp index eae4e06..33d22ad 100644 --- a/Transceiver52M/Transceiver.cpp +++ b/Transceiver52M/Transceiver.cpp @@ -176,6 +176,11 @@ void Transceiver::addRadioVector(size_t chan, BitVector &bits, return; } + if (wTime.TN() > 7) { + LOG(ALERT) << "Received burst with invalid slot " << wTime.TN(); + return; + } + burst = modulateBurst(bits, 8 + (wTime.TN() % 4 == 0), mSPSTx); scaleVector(*burst, txFullScale * pow(10, -RSSI / 10)); |