diff options
| author | Daniel Willmann <dwillmann@sysmocom.de> | 2014-03-20 19:24:48 +0100 |
|---|---|---|
| committer | Daniel Willmann <daniel@totalueberwachung.de> | 2014-03-26 18:11:07 +0100 |
| commit | 3dc4e16786d1e5723e76ad7c70ad54134957f9e5 (patch) | |
| tree | c8a9609da0fff4967574b1d7af375d58a65f4788 /src/gsm/lapd_core.c | |
| parent | 09129352f99a90a784912ae3c8ff442268a35480 (diff) | |
gsm/lapdm: Prevent LAPD tx_queue from filling up in polling mode
If LAPDm receives an I-Frame while there already is an I-Frame in the
tx_queue the code generates an additional RR (to acknowledge the
received I-Frame). Instead, N(R) of the I-Frame in the tx_queue should
be updated to ACK the data.
Diffstat (limited to 'src/gsm/lapd_core.c')
| -rw-r--r-- | src/gsm/lapd_core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gsm/lapd_core.c b/src/gsm/lapd_core.c index ef1d22a7..8c5fe9c6 100644 --- a/src/gsm/lapd_core.c +++ b/src/gsm/lapd_core.c @@ -1607,6 +1607,12 @@ static int lapd_rx_i(struct msgb *msg, struct lapd_msg_ctx *lctx) if (!dl->own_busy) { /* NOTE: V(R) is already set above */ rc = lapd_send_i(lctx, __LINE__); + + /* if update_pending_iframe returns 0 it updated + * the lapd header of an iframe in the tx queue */ + if (rc && dl->update_pending_frames) + rc = dl->update_pending_frames(lctx); + if (rc) { LOGP(DLLAPD, LOGL_INFO, "we are not busy and " "have no pending data, send RR\n"); |