laforge has submitted this change. ( https://gerrit.osmocom.org/c/osmo-msc/+/38305?usp=email )

Change subject: Release BSS connection when SS message is rejected ......................................................................

Release BSS connection when SS message is rejected

When an initial call-independent supplementary service message is received, it is checked whether the message is a REGISTER message. If it is not, the MSC will reject it by sending a RELEASE COMPLETE message.

This patch ensures that the MSC_A use counter is decremented, so that the BSS connection is released, if it is not used by any other transaction.

Without this patch, the msc_a_fsm would wait 5 seconds for an initial transaction before releasing the BSS connection.

Related: OS#6427 Change-Id: Ic6765e5d480735e67d97f0f560da24653b26d487 --- M src/libmsc/gsm_09_11.c 1 file changed, 6 insertions(+), 0 deletions(-)

Approvals: Jenkins Builder: Verified fixeria: Looks good to me, but someone else must approve dexter: Looks good to me, but someone else must approve laforge: Looks good to me, approved

diff --git a/src/libmsc/gsm_09_11.c b/src/libmsc/gsm_09_11.c index e293890..ab40f02 100644 --- a/src/libmsc/gsm_09_11.c +++ b/src/libmsc/gsm_09_11.c @@ -142,6 +142,9 @@ gsm48_tx_simple(msc_a, GSM48_PDISC_NC_SS | (tid << 4), GSM0480_MTYPE_RELEASE_COMPLETE); + /* Decrement use counter that has been incremented by CM Service Request (SS). + * If there is no other service request, the BSS connection will be released. */ + msc_a_put(msc_a, MSC_A_USE_CM_SERVICE_SS); return -EINVAL; }

@@ -151,6 +154,9 @@ gsm48_tx_simple(msc_a, GSM48_PDISC_NC_SS | (tid << 4), GSM0480_MTYPE_RELEASE_COMPLETE); + /* Decrement use counter that has been incremented by CM Service Request (SS). + * If there is no other service request, the BSS connection will be released. */ + msc_a_put(msc_a, MSC_A_USE_CM_SERVICE_SS); return -ENOMEM; }