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Fix: Kill pending downlink TBF, if mobile requests uplink TBF on RACH 

If the mobile misses assignment, it changes back to idle mode. In this
case we must kill the pending downlink TBF, because it is not used by
mobile and we can assign a new downlink TBF for new downlink data.
(We may not have two downlink TBF with same TLLI!)
This commit is contained in:
Andreas Eversberg 2012-07-23 18:13:31 +02:00
parent 7438df7d70
commit bc65586917
1 changed files with 9 additions and 0 deletions
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9
src/gprs_rlcmac_data.cpp
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@ -644,6 +644,8 @@ int gprs_rlcmac_rcv_data_block_acknowledged(uint8_t trx, uint8_t ts,
/* get TLLI */
if (!tbf->tlli_valid) {
struct gprs_rlcmac_tbf *dl_tbf;
/* no TLLI yet */
if (!rh->ti) {
LOGP(DRLCMACUL, LOGL_NOTICE, "UL DATA TBF=%d without "
@ -659,6 +661,13 @@ int gprs_rlcmac_rcv_data_block_acknowledged(uint8_t trx, uint8_t ts,
tbf->tlli_valid = 1;
LOGP(DRLCMACUL, LOGL_INFO, "Decoded premier TLLI=0x%08x of "
"UL DATA TBF=%d.\n", tbf->tlli, rh->tfi);
if ((dl_tbf = tbf_by_tlli(tbf->tlli, GPRS_RLCMAC_DL_TBF))) {
LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from "
"TLLI=0x%08x while DL TBF=%d still exists. "
"Killing pending DL TBF\n", tbf->tlli,
dl_tbf->tfi);
tbf_free(dl_tbf);
}
/* already have TLLI, but we stille get another one */
} else if (rh->ti) {
uint32_t tlli;