Change in libosmocore[master]: bssgp_bvc_fsm: Handle block request from application correctly

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daniel gerrit-no-reply at lists.osmocom.org
Thu Jan 7 13:58:51 UTC 2021


daniel has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmocore/+/22029 )


Change subject: bssgp_bvc_fsm: Handle block request from application correctly
......................................................................

bssgp_bvc_fsm: Handle block request from application correctly

This is no event from an incoming message so rx is NULL, and we can't send a
status PDU. Also blocking the signalling BVC is not allowed (unblocking it is already
forbidden).

Change-Id: I3e384b71d57e939efc1596ac1d92380ed5eb916d
Fixes: CID#215716
---
M src/gb/bssgp_bvc_fsm.c
1 file changed, 4 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/29/22029/1

diff --git a/src/gb/bssgp_bvc_fsm.c b/src/gb/bssgp_bvc_fsm.c
index cc634a5..6de0028 100644
--- a/src/gb/bssgp_bvc_fsm.c
+++ b/src/gb/bssgp_bvc_fsm.c
@@ -456,7 +456,10 @@
 	case BSSGP_BVCFSM_E_REQ_BLOCK:
 		if (bfp->role_sgsn) {
 			LOGPFSML(fi, LOGL_ERROR, "SGSN may not initiate BVC-BLOCK\n");
-			_tx_status(fi, BSSGP_CAUSE_SEM_INCORR_PDU, rx);
+			break;
+		}
+		if (bfp->bvci == 0) {
+			LOGPFSML(fi, LOGL_ERROR, "BVCI 0 cannot be blocked\n");
 			break;
 		}
 		bfp->locally_blocked = true;

-- 
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Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Change-Id: I3e384b71d57e939efc1596ac1d92380ed5eb916d
Gerrit-Change-Number: 22029
Gerrit-PatchSet: 1
Gerrit-Owner: daniel <dwillmann at sysmocom.de>
Gerrit-MessageType: newchange
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