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pespin gerrit-no-reply at lists.osmocom.orgpespin has submitted this change. ( https://gerrit.osmocom.org/c/osmo-mgw/+/24862 ) Change subject: mgw: rx CRCX: Avoid sending dummy rtp if remote address not provided ...................................................................... mgw: rx CRCX: Avoid sending dummy rtp if remote address not provided The following sequence of events was seen frequently in a osmo-mgw instance running on the field with heavy traffic: """ endpoint:rtpbridge/1 at mgw CRCX: creating new connection ... mgcp_network.c:236 endpoint:rtpbridge/1 at mgw CI:1C8CCFA9 Failed to send dummy RTP packet. """ Allegedly, that happens because at CRCX time the remote address may still not be known, hence we end up trying to send a dummy rtp packet to, for instance, host 0.0.0.0 port 0, which will of course fail. Let's avoid sending it if the address is not yet known. Similary, same issue could be seen during MDCX, since at MDCX we don't necessarily need to have a valid addr+port (there could be several MDCX and only last one set it). Finally, the keepalive timer also needs the check, since it iterates over all connections, and it could be that some is still not fully configured. Related: SYS#5498 Change-Id: I8ceafda691146823b12232b4a804b4ce74acbdc8 --- M include/osmocom/mgcp/mgcp_network.h M src/libosmo-mgcp/mgcp_network.c M src/libosmo-mgcp/mgcp_protocol.c 3 files changed, 16 insertions(+), 5 deletions(-) Approvals: neels: Looks good to me, but someone else must approve dexter: Looks good to me, approved Jenkins Builder: Verified diff --git a/include/osmocom/mgcp/mgcp_network.h b/include/osmocom/mgcp/mgcp_network.h index 1ed00e4..75b342d 100644 --- a/include/osmocom/mgcp/mgcp_network.h +++ b/include/osmocom/mgcp/mgcp_network.h @@ -132,6 +132,8 @@ char local_addr[INET6_ADDRSTRLEN]; }; +bool mgcp_rtp_end_remote_addr_available(const struct mgcp_rtp_end *rtp_end); + struct mgcp_rtp_tap { /* is this tap active (1) or not (0) */ int enabled; diff --git a/src/libosmo-mgcp/mgcp_network.c b/src/libosmo-mgcp/mgcp_network.c index 5b3ea51..d18c7cb 100644 --- a/src/libosmo-mgcp/mgcp_network.c +++ b/src/libosmo-mgcp/mgcp_network.c @@ -88,6 +88,11 @@ } } +bool mgcp_rtp_end_remote_addr_available(const struct mgcp_rtp_end *rtp_end) +{ + return rtp_end->rtp_port && !addr_is_any(&rtp_end->addr); +} + /*! Determine the local rtp bind IP-address. * \param[out] addr caller provided memory to store the resulting IP-Address. * \param[in] endp mgcp endpoint, that holds a copy of the VTY parameters. diff --git a/src/libosmo-mgcp/mgcp_protocol.c b/src/libosmo-mgcp/mgcp_protocol.c index 8d6f6f5..4fb93b0 100644 --- a/src/libosmo-mgcp/mgcp_protocol.c +++ b/src/libosmo-mgcp/mgcp_protocol.c @@ -990,8 +990,9 @@ /* Send dummy packet, see also comments in mgcp_keepalive_timer_cb() */ OSMO_ASSERT(trunk->keepalive_interval >= MGCP_KEEPALIVE_ONCE); - if (conn->conn->mode & MGCP_CONN_RECV_ONLY - && trunk->keepalive_interval != MGCP_KEEPALIVE_NEVER) + if (conn->conn->mode & MGCP_CONN_RECV_ONLY && + mgcp_rtp_end_remote_addr_available(&conn->end) && + trunk->keepalive_interval != MGCP_KEEPALIVE_NEVER) send_dummy(endp, conn); LOGPCONN(_conn, DLMGCP, LOGL_NOTICE, @@ -1232,8 +1233,9 @@ /* Send dummy packet, see also comments in mgcp_keepalive_timer_cb() */ OSMO_ASSERT(endp->trunk->keepalive_interval >= MGCP_KEEPALIVE_ONCE); - if (conn->conn->mode & MGCP_CONN_RECV_ONLY - && endp->trunk->keepalive_interval != MGCP_KEEPALIVE_NEVER) + if (conn->conn->mode & MGCP_CONN_RECV_ONLY && + mgcp_rtp_end_remote_addr_available(&conn->end) && + endp->trunk->keepalive_interval != MGCP_KEEPALIVE_NEVER) send_dummy(endp, conn); rate_ctr_inc(rate_ctr_group_get_ctr(rate_ctrs, MGCP_MDCX_SUCCESS)); @@ -1495,7 +1497,9 @@ for (i = 1; i < trunk->number_endpoints; ++i) { struct mgcp_endpoint *endp = trunk->endpoints[i]; llist_for_each_entry(conn, &endp->conns, entry) { - if (conn->mode == MGCP_CONN_RECV_ONLY) + if (conn->type == MGCP_CONN_TYPE_RTP && + conn->mode == MGCP_CONN_RECV_ONLY && + mgcp_rtp_end_remote_addr_available(&conn->u.rtp.end)) send_dummy(endp, &conn->u.rtp); } } -- To view, visit https://gerrit.osmocom.org/c/osmo-mgw/+/24862 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-mgw Gerrit-Branch: master Gerrit-Change-Id: I8ceafda691146823b12232b4a804b4ce74acbdc8 Gerrit-Change-Number: 24862 Gerrit-PatchSet: 4 Gerrit-Owner: pespin <pespin at sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: dexter <pmaier at sysmocom.de> Gerrit-Reviewer: neels <nhofmeyr at sysmocom.de> Gerrit-Reviewer: pespin <pespin at sysmocom.de> Gerrit-MessageType: merged -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20210707/d8e71892/attachment.htm>