diff options
author | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2015-10-04 11:11:11 +0200 |
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committer | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2015-10-12 09:11:25 +0200 |
commit | 1afe7c7fe5e79435a1ebe9aff622ca20b901d923 (patch) | |
tree | 520d1516c16692a778c0db8aabb49bcd330ed656 /openbsc/src/libmgcp | |
parent | 20626dde8fd04c2ded3788a8417ea67abf17c4cf (diff) |
osmux: Remember the allocated CID and make sure it is released
There appears to be a leak of CIDs:
<000b> mgcp_osmux.c:544 All Osmux circuits are in use!
There are paths that a CID had been requested and never released
of the NAT. Remember the allocated CID inside the endpoint so it
can always be released. It is using a new variable as the behavior
for the NAT and MGCP MGW is different.
The allocated_cid must be signed so that we can assign outside
of the 0-255 range of it.
Fixes: OW#1493
Diffstat (limited to 'openbsc/src/libmgcp')
-rw-r--r-- | openbsc/src/libmgcp/mgcp_osmux.c | 13 | ||||
-rw-r--r-- | openbsc/src/libmgcp/mgcp_protocol.c | 4 |
2 files changed, 17 insertions, 0 deletions
diff --git a/openbsc/src/libmgcp/mgcp_osmux.c b/openbsc/src/libmgcp/mgcp_osmux.c index 30a81cbc3..2d39b2c5e 100644 --- a/openbsc/src/libmgcp/mgcp_osmux.c +++ b/openbsc/src/libmgcp/mgcp_osmux.c @@ -492,6 +492,19 @@ void osmux_disable_endpoint(struct mgcp_endpoint *endp) osmux_handle_put(endp->osmux.in); } +void osmux_release_cid(struct mgcp_endpoint *endp) +{ + if (endp->osmux.allocated_cid >= 0) + osmux_put_cid(endp->osmux.allocated_cid); + endp->osmux.allocated_cid = -1; +} + +void osmux_allocate_cid(struct mgcp_endpoint *endp) +{ + osmux_release_cid(endp); + endp->osmux.allocated_cid = osmux_get_cid(); +} + /* We don't need to send the dummy load for osmux so often as another endpoint * may have already punched the hole in the firewall. This approach is simple * though. diff --git a/openbsc/src/libmgcp/mgcp_protocol.c b/openbsc/src/libmgcp/mgcp_protocol.c index e2bda3aff..42ce8bb2f 100644 --- a/openbsc/src/libmgcp/mgcp_protocol.c +++ b/openbsc/src/libmgcp/mgcp_protocol.c @@ -1314,6 +1314,7 @@ int mgcp_endpoints_allocate(struct mgcp_trunk_config *tcfg) return -1; for (i = 0; i < tcfg->number_endpoints; ++i) { + tcfg->endpoints[i].osmux.allocated_cid = -1; tcfg->endpoints[i].ci = CI_UNUSED; tcfg->endpoints[i].cfg = tcfg->cfg; tcfg->endpoints[i].tcfg = tcfg; @@ -1354,6 +1355,9 @@ void mgcp_release_endp(struct mgcp_endpoint *endp) if (endp->osmux.state == OSMUX_STATE_ENABLED) osmux_disable_endpoint(endp); + /* release the circuit ID if it had been allocated */ + osmux_release_cid(endp); + memset(&endp->taps, 0, sizeof(endp->taps)); } |