diff options
Diffstat (limited to 'src/tbf_dl.cpp')
| -rw-r--r-- | src/tbf_dl.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/tbf_dl.cpp b/src/tbf_dl.cpp index c894f5eb..9baa1cd0 100644 --- a/src/tbf_dl.cpp +++ b/src/tbf_dl.cpp @@ -349,7 +349,23 @@ struct msgb *gprs_rlcmac_dl_tbf::create_new_bsn(const uint32_t fn, const uint8_t delimiter = data; /* where next length header would be stored */ space = block_data_len - sizeof(*rh); while (1) { + if (m_llc.frame_length() == 0) { + /* A header will need to by added, so we just need + * space-1 octets */ + m_llc.put_dummy_frame(space - 1); + + /* It is not clear, when the next real data will + * arrive, so request a DL ack/nack now */ + request_dl_ack(); + + LOGP(DRLCMACDL, LOGL_DEBUG, + "-- Empty chunk, " + "added LLC dummy command of size %d\n", + m_llc.frame_length()); + } + chunk = m_llc.chunk_size(); + /* if chunk will exceed block limit */ if (chunk > space) { LOGP(DRLCMACDL, LOGL_DEBUG, "-- Chunk with length %d " |