diff options
Diffstat (limited to 'src/rlc.cpp')
| -rw-r--r-- | src/rlc.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/rlc.cpp b/src/rlc.cpp index ee2635a..906f4cc 100644 --- a/src/rlc.cpp +++ b/src/rlc.cpp @@ -83,6 +83,32 @@ int gprs_rlc_dl_window::mark_for_resend() return resend; } +/* Update the receive block bitmap */ +uint16_t gprs_rlc_ul_window::update_egprs_rbb(uint8_t *rbb) +{ + int i; + uint16_t bsn; + uint16_t bitmask = 0x80; + int8_t pos = 0; + int8_t bit_pos = 0; + for (i = 0, bsn = (v_q()+1); ((bsn < (v_r())) && (i < ws())); i++, + bsn = this->mod_sns(bsn + 1)) { + if (m_v_n.is_received(bsn)) { + rbb[pos] = rbb[pos] | bitmask; + } else { + rbb[pos] = rbb[pos] & (~bitmask); + } + bitmask = bitmask >> 1; + bit_pos++; + bit_pos = bit_pos % 8; + if(bit_pos == 0) { + pos++; + bitmask = 0x80; + } + } + return i; +} + int gprs_rlc_dl_window::count_unacked() { uint16_t unacked = 0; |