| /* Message connection list handling */ |
| |
| /* |
| * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| * All Rights Reserved |
| * |
| * Author: Philipp Maier |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| #pragma once |
| |
| #include <osmocom/mgcp/mgcp.h> |
| #include <osmocom/mgcp/mgcp_network.h> |
| #include <osmocom/mgcp/osmux.h> |
| #include <osmocom/core/linuxlist.h> |
| #include <osmocom/core/rate_ctr.h> |
| #include <inttypes.h> |
| |
| #define LOGPCONN(conn, cat, level, fmt, args...) \ |
| LOGPENDP((conn)->endp, cat, level, "CI:%s " fmt, \ |
| (conn)->id, \ |
| ## args) |
| |
| #define LOG_CONN(conn, level, fmt, args...) \ |
| LOGP(DRTP, level, "(%s I:%s) " fmt, \ |
| (conn)->endp ? (conn)->endp->name : "none", (conn)->id, ## args) |
| |
| #define LOG_CONN_RTP(conn_rtp, level, fmt, args...) \ |
| LOG_CONN((conn_rtp)->conn, level, fmt, ## args) |
| |
| /* Specific rtp connection type (see struct mgcp_conn_rtp) */ |
| enum mgcp_conn_rtp_type { |
| MGCP_RTP_DEFAULT = 0, |
| MGCP_OSMUX_BSC, |
| MGCP_OSMUX_BSC_NAT, |
| }; |
| |
| /*! Connection type, specifies which member of the union "u" in mgcp_conn |
| * contains a useful connection description (currently only RTP) */ |
| enum mgcp_conn_type { |
| MGCP_CONN_TYPE_RTP, |
| }; |
| |
| /* MGCP connection (RTP) */ |
| struct mgcp_conn_rtp { |
| |
| /* Backpointer to conn struct */ |
| struct mgcp_conn *conn; |
| |
| /* Specific connection type */ |
| enum mgcp_conn_rtp_type type; |
| |
| /* Port status */ |
| struct mgcp_rtp_end end; |
| |
| /* Sequence bits */ |
| struct mgcp_rtp_state state; |
| |
| /* taps for the rtp connection; one per direction */ |
| struct mgcp_rtp_tap tap_in; |
| struct mgcp_rtp_tap tap_out; |
| |
| /* Osmux states (optional) */ |
| struct { |
| /* Osmux state: disabled, activating, active */ |
| enum osmux_state state; |
| /* Is cid holding valid data? is it allocated from pool? */ |
| bool cid_allocated; |
| /* Allocated Osmux circuit ID for this conn */ |
| uint8_t cid; |
| /* handle to batch messages */ |
| struct osmux_in_handle *in; |
| /* handle to unbatch messages */ |
| struct osmux_out_handle out; |
| /* statistics */ |
| struct { |
| uint32_t chunks; |
| uint32_t octets; |
| } stats; |
| } osmux; |
| |
| struct rate_ctr_group *rate_ctr_group; |
| }; |
| |
| /*! MGCP connection (untyped) */ |
| struct mgcp_conn { |
| /*! list head */ |
| struct llist_head entry; |
| |
| /*! Backpointer to the endpoint where the conn belongs to */ |
| struct mgcp_endpoint *endp; |
| |
| /*! type of the connection (union) */ |
| enum mgcp_conn_type type; |
| |
| /*! mode of the connection */ |
| enum mgcp_connection_mode mode; |
| |
| /*! copy of the mode to restore the original setting (VTY) */ |
| enum mgcp_connection_mode mode_orig; |
| |
| /*! connection id to identify the connection */ |
| char id[MGCP_CONN_ID_MAXLEN]; |
| |
| /*! human readable name (vty, logging) */ |
| char name[256]; |
| |
| /*! activity tracker (for cleaning up inactive connections) */ |
| struct osmo_timer_list watchdog; |
| |
| /*! union with connection description */ |
| union { |
| struct mgcp_conn_rtp rtp; |
| } u; |
| |
| /*! pointer to optional private data */ |
| void *priv; |
| }; |
| |
| /* RTP connection related counters */ |
| enum { |
| IN_STREAM_ERR_TSTMP_CTR, |
| OUT_STREAM_ERR_TSTMP_CTR, |
| RTP_PACKETS_RX_CTR, |
| RTP_OCTETS_RX_CTR, |
| RTP_PACKETS_TX_CTR, |
| RTP_OCTETS_TX_CTR, |
| RTP_DROPPED_PACKETS_CTR, |
| RTP_NUM_CONNECTIONS, |
| }; |
| |
| /* RTP per-connection statistics. Instances of the corresponding rate counter group |
| * exist for the lifetime of an RTP connection. |
| * Must be kept in sync with all_rtp_conn_rate_ctr_desc below */ |
| static const struct rate_ctr_desc mgcp_conn_rate_ctr_desc[] = { |
| [IN_STREAM_ERR_TSTMP_CTR] = {"stream_err_tstmp:in", "Inbound rtp-stream timestamp errors."}, |
| [OUT_STREAM_ERR_TSTMP_CTR] = {"stream_err_tstmp:out", "Outbound rtp-stream timestamp errors."}, |
| [RTP_PACKETS_RX_CTR] = {"rtp:packets_rx", "Inbound rtp packets."}, |
| [RTP_OCTETS_RX_CTR] = {"rtp:octets_rx", "Inbound rtp octets."}, |
| [RTP_PACKETS_TX_CTR] = {"rtp:packets_tx", "Outbound rtp packets."}, |
| [RTP_OCTETS_TX_CTR] = {"rtp:octets_tx", "Outbound rtp octets."}, |
| [RTP_DROPPED_PACKETS_CTR] = {"rtp:dropped", "dropped rtp packets."} |
| }; |
| |
| /* Aggregated RTP connection stats. These are updated when an RTP connection is freed. |
| * Must be kept in sync with mgcp_conn_rate_ctr_desc above */ |
| static const struct rate_ctr_desc all_rtp_conn_rate_ctr_desc[] = { |
| [IN_STREAM_ERR_TSTMP_CTR] = {"all_rtp:err_tstmp_in", "Total inbound rtp-stream timestamp errors."}, |
| [OUT_STREAM_ERR_TSTMP_CTR] = {"all_rtp:err_tstmp_out", "Total outbound rtp-stream timestamp errors."}, |
| [RTP_PACKETS_RX_CTR] = {"all_rtp:packets_rx", "Total inbound rtp packets."}, |
| [RTP_OCTETS_RX_CTR] = {"all_rtp:octets_rx", "Total inbound rtp octets."}, |
| [RTP_PACKETS_TX_CTR] = {"all_rtp:packets_tx", "Total outbound rtp packets."}, |
| [RTP_OCTETS_TX_CTR] = {"all_rtp:octets_tx", "Total outbound rtp octets."}, |
| [RTP_DROPPED_PACKETS_CTR] = {"all_rtp:dropped", "Total dropped rtp packets."}, |
| |
| /* This last counter does not exist in per-connection stats, only here. */ |
| [RTP_NUM_CONNECTIONS] = {"all_rtp:num_closed_conns", "Total number of rtp connections closed."} |
| }; |
| |
| /* Was conn configured to handle Osmux? */ |
| static inline bool mgcp_conn_rtp_is_osmux(const struct mgcp_conn_rtp *conn) { |
| return conn->type == MGCP_OSMUX_BSC || conn->type == MGCP_OSMUX_BSC_NAT; |
| } |
| |
| struct mgcp_conn *mgcp_conn_alloc(void *ctx, struct mgcp_endpoint *endp, |
| enum mgcp_conn_type type, char *name); |
| struct mgcp_conn *mgcp_conn_get(struct mgcp_endpoint *endp, const char *id); |
| struct mgcp_conn_rtp *mgcp_conn_get_rtp(struct mgcp_endpoint *endp, |
| const char *id); |
| void mgcp_conn_free(struct mgcp_endpoint *endp, const char *id); |
| void mgcp_conn_free_oldest(struct mgcp_endpoint *endp); |
| void mgcp_conn_free_all(struct mgcp_endpoint *endp); |
| char *mgcp_conn_dump(struct mgcp_conn *conn); |
| struct mgcp_conn *mgcp_find_dst_conn(struct mgcp_conn *conn); |
| struct mgcp_conn *mgcp_conn_get_oldest(struct mgcp_endpoint *endp); |
| void mgcp_conn_watchdog_kick(struct mgcp_conn *conn); |