diff options
| -rw-r--r-- | src/osmo-bts-virtual/l1_if.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/osmo-bts-virtual/l1_if.c b/src/osmo-bts-virtual/l1_if.c index 7f52f777..b3003ce0 100644 --- a/src/osmo-bts-virtual/l1_if.c +++ b/src/osmo-bts-virtual/l1_if.c @@ -153,6 +153,19 @@ static void virt_um_rcv_cb(struct virt_um_inst *vui, struct msgb *msg) chantype_gsmtap2rsl(gsmtap_chantype, &rsl_chantype, &link_id); chan_nr = rsl_enc_chan_nr(rsl_chantype, subslot, timeslot); + // Generally ignore all msgs that are either not received with the right arfcn... + if((arfcn & GSMTAP_ARFCN_MASK) != l1t->trx->arfcn) { + LOGP(LOGL_NOTICE, DL1P, + "Ignore incoming msg - msg arfcn=%d not equal trx arfcn=%d!\n", arfcn & GSMTAP_ARFCN_MASK, l1t->trx->arfcn); + goto nomessage; + } + // ... or not uplink + if(!(arfcn & GSMTAP_ARFCN_F_UPLINK)) { + LOGP(LOGL_NOTICE, DL1P, + "Ignore incoming msg - no uplink flag."); + goto nomessage; + } + // switch case with removed acch flag switch (gsmtap_chantype & ~GSMTAP_CHANNEL_ACCH & 0xff) { case GSMTAP_CHANNEL_RACH: |