Harald Welte has submitted this change and it was merged. (
https://gerrit.osmocom.org/14085 )
Change subject: RSL: Reject RLL messages for lchans that are not active yet
......................................................................
RSL: Reject RLL messages for lchans that are not active yet
The Radio Link Layer (RLL) messages only make sense when a given
logical channel is active. If it isn't active, let's reject the
messages with an RSL ERROR REPORT with cause "Message sequence error",
wich according to spec means:
"A message with an existing message type which is not possible according
to the specification and to the state of the BTS is erroneous."
Related: OS#3750
Change-Id: I68dbb622aeaee657471664cdc0b69c2ac316d77e
---
M src/common/rsl.c
1 file changed, 8 insertions(+), 0 deletions(-)
Approvals:
Jenkins Builder: Verified
Harald Welte: Looks good to me, approved
diff --git a/src/common/rsl.c b/src/common/rsl.c
index 0fe50e0..b02f4e6 100644
--- a/src/common/rsl.c
+++ b/src/common/rsl.c
@@ -2559,6 +2559,14 @@
return rsl_reject_unknown_lchan(msg);
}
+ if (lchan->state != LCHAN_S_ACTIVE) {
+ LOGPLCHAN(lchan, DRLL, LOGL_NOTICE, "Rx RLL %s for lchan which
isn't active\n",
+ rsl_msg_name(rh->c.msg_type));
+ rsl_tx_error_report(trx, RSL_ERR_MSG_SEQ, &rh->chan_nr,
&rh->link_id, msg);
+ msgb_free(msg);
+ return -1;
+ }
+
DEBUGP(DRLL, "%s Rx RLL %s Abis -> LAPDm\n", gsm_lchan_name(lchan),
rsl_msg_name(rh->c.msg_type));
--
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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I68dbb622aeaee657471664cdc0b69c2ac316d77e
Gerrit-Change-Number: 14085
Gerrit-PatchSet: 4
Gerrit-Owner: Harald Welte <lafo...@gnumonks.org>
Gerrit-Reviewer: Harald Welte <lafo...@gnumonks.org>
Gerrit-Reviewer: Jenkins Builder (1000002)
Gerrit-CC: Vadim Yanitskiy <axilira...@gmail.com>
