diff options
Diffstat (limited to 'src/bts.cpp')
| -rw-r--r-- | src/bts.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/bts.cpp b/src/bts.cpp index cc53f25..0e45188 100644 --- a/src/bts.cpp +++ b/src/bts.cpp @@ -291,6 +291,45 @@ int BTS::tfi_find_free(enum gprs_rlcmac_tbf_direction dir, return -1; } +int BTS::rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn) +{ + struct gprs_rlcmac_tbf *tbf; + uint8_t plen; + uint32_t tlli; + + /* move to IA Rest Octets */ + plen = data[0] >> 2; + data += 1 + plen; + + if ((*data & 0xf0) != 0xd0) { + LOGP(DRLCMAC, LOGL_ERROR, "Got IMM.ASS confirm, but rest " + "octets do not start with bit sequence 'HH01' " + "(Packet Downlink Assignment)\n"); + return -EINVAL; + } + + /* get TLLI from downlink assignment */ + tlli = (*data++) << 28; + tlli |= (*data++) << 20; + tlli |= (*data++) << 12; + tlli |= (*data++) << 4; + tlli |= (*data++) >> 4; + + tbf = tbf_by_tlli(tlli, GPRS_RLCMAC_DL_TBF); + if (!tbf) { + LOGP(DRLCMAC, LOGL_ERROR, "Got IMM.ASS confirm, but TLLI=%08x " + "does not exit\n", tlli); + return -EINVAL; + } + + LOGP(DRLCMAC, LOGL_DEBUG, "Got IMM.ASS confirm for TLLI=%08x\n", tlli); + + if (tbf->dir.dl.wait_confirm) + tbf_timer_start(tbf, 0, Tassign_agch); + + return 0; +} + /* * PDCH code below. TODO: move to a separate file |