207 lines
6.7 KiB
C
207 lines
6.7 KiB
C
/* Message connection list handling */
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/*
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* (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved
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*
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* Author: Philipp Maier
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include <osmocom/mgcp/mgcp.h>
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#include <osmocom/mgcp/mgcp_network.h>
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#include <osmocom/mgcp/osmux.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/rate_ctr.h>
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#include <osmocom/gsm/iuup.h>
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#include <inttypes.h>
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#define LOGPCONN(conn, cat, level, fmt, args...) \
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LOGPENDP((conn)->endp, cat, level, "CI:%s " fmt, \
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(conn)->id, \
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## args)
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#define LOG_CONN(conn, level, fmt, args...) \
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LOGP(DRTP, level, "(%s I:%s) " fmt, \
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(conn)->endp ? (conn)->endp->name : "none", (conn)->id, ## args)
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#define LOG_CONN_RTP(conn_rtp, level, fmt, args...) \
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LOG_CONN((conn_rtp)->conn, level, fmt, ## args)
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/* Specific rtp connection type (see struct mgcp_conn_rtp) */
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enum mgcp_conn_rtp_type {
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MGCP_RTP_DEFAULT = 0,
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MGCP_OSMUX_BSC,
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MGCP_OSMUX_BSC_NAT,
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MGCP_RTP_IUUP,
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};
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/*! Connection type, specifies which member of the union "u" in mgcp_conn
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* contains a useful connection description (currently only RTP) */
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enum mgcp_conn_type {
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MGCP_CONN_TYPE_RTP,
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};
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/* MGCP connection (RTP) */
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struct mgcp_conn_rtp {
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/* Backpointer to conn struct */
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struct mgcp_conn *conn;
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/* Specific connection type */
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enum mgcp_conn_rtp_type type;
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/* Port status */
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struct mgcp_rtp_end end;
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/* Sequence bits */
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struct mgcp_rtp_state state;
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/* taps for the rtp connection; one per direction */
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struct mgcp_rtp_tap tap_in;
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struct mgcp_rtp_tap tap_out;
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/* Osmux states (optional) */
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struct {
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/* Osmux state: disabled, activating, active */
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enum osmux_state state;
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/* Is cid holding valid data? is it allocated from pool? */
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bool cid_allocated;
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/* Allocated Osmux circuit ID for this conn */
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uint8_t cid;
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/* handle to batch messages */
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struct osmux_in_handle *in;
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/* handle to unbatch messages */
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struct osmux_out_handle out;
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/* statistics */
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struct {
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uint32_t chunks;
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uint32_t octets;
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} stats;
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} osmux;
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struct {
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struct osmo_iuup_instance *iui;
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bool active_init; /* true: Send IuUP Init */
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int rfci_id_no_data; /* RFCI Id for RFCI NO_DATA (-1 if not available) */
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bool configured;
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struct osmo_iuup_rnl_prim *init_ind;
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} iuup;
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struct rate_ctr_group *rate_ctr_group;
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};
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/*! MGCP connection (untyped) */
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struct mgcp_conn {
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/*! list head */
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struct llist_head entry;
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/*! Backpointer to the endpoint where the conn belongs to */
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struct mgcp_endpoint *endp;
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/*! type of the connection (union) */
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enum mgcp_conn_type type;
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/*! mode of the connection */
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enum mgcp_connection_mode mode;
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/*! copy of the mode to restore the original setting (VTY) */
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enum mgcp_connection_mode mode_orig;
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/*! connection id to identify the connection */
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char id[MGCP_CONN_ID_MAXLEN];
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/*! human readable name (vty, logging) */
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char name[256];
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/*! activity tracker (for cleaning up inactive connections) */
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struct osmo_timer_list watchdog;
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/*! union with connection description */
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union {
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struct mgcp_conn_rtp rtp;
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} u;
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/*! pointer to optional private data */
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void *priv;
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};
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/* RTP connection related counters */
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enum {
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IN_STREAM_ERR_TSTMP_CTR,
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OUT_STREAM_ERR_TSTMP_CTR,
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RTP_PACKETS_RX_CTR,
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RTP_OCTETS_RX_CTR,
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RTP_PACKETS_TX_CTR,
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RTP_OCTETS_TX_CTR,
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RTP_DROPPED_PACKETS_CTR,
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RTP_NUM_CONNECTIONS,
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};
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/* RTP per-connection statistics. Instances of the corresponding rate counter group
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* exist for the lifetime of an RTP connection.
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* Must be kept in sync with all_rtp_conn_rate_ctr_desc below */
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static const struct rate_ctr_desc mgcp_conn_rate_ctr_desc[] = {
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[IN_STREAM_ERR_TSTMP_CTR] = {"stream_err_tstmp:in", "Inbound rtp-stream timestamp errors."},
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[OUT_STREAM_ERR_TSTMP_CTR] = {"stream_err_tstmp:out", "Outbound rtp-stream timestamp errors."},
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[RTP_PACKETS_RX_CTR] = {"rtp:packets_rx", "Inbound rtp packets."},
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[RTP_OCTETS_RX_CTR] = {"rtp:octets_rx", "Inbound rtp octets."},
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[RTP_PACKETS_TX_CTR] = {"rtp:packets_tx", "Outbound rtp packets."},
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[RTP_OCTETS_TX_CTR] = {"rtp:octets_tx", "Outbound rtp octets."},
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[RTP_DROPPED_PACKETS_CTR] = {"rtp:dropped", "dropped rtp packets."}
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};
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/* Aggregated RTP connection stats. These are updated when an RTP connection is freed.
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* Must be kept in sync with mgcp_conn_rate_ctr_desc above */
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static const struct rate_ctr_desc all_rtp_conn_rate_ctr_desc[] = {
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[IN_STREAM_ERR_TSTMP_CTR] = {"all_rtp:err_tstmp_in", "Total inbound rtp-stream timestamp errors."},
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[OUT_STREAM_ERR_TSTMP_CTR] = {"all_rtp:err_tstmp_out", "Total outbound rtp-stream timestamp errors."},
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[RTP_PACKETS_RX_CTR] = {"all_rtp:packets_rx", "Total inbound rtp packets."},
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[RTP_OCTETS_RX_CTR] = {"all_rtp:octets_rx", "Total inbound rtp octets."},
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[RTP_PACKETS_TX_CTR] = {"all_rtp:packets_tx", "Total outbound rtp packets."},
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[RTP_OCTETS_TX_CTR] = {"all_rtp:octets_tx", "Total outbound rtp octets."},
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[RTP_DROPPED_PACKETS_CTR] = {"all_rtp:dropped", "Total dropped rtp packets."},
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/* This last counter does not exist in per-connection stats, only here. */
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[RTP_NUM_CONNECTIONS] = {"all_rtp:num_closed_conns", "Total number of rtp connections closed."}
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};
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/* Was conn configured to handle Osmux? */
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static inline bool mgcp_conn_rtp_is_osmux(const struct mgcp_conn_rtp *conn) {
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return conn->type == MGCP_OSMUX_BSC || conn->type == MGCP_OSMUX_BSC_NAT;
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}
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/* Was conn configured to handle Osmux? */
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static inline bool mgcp_conn_rtp_is_iuup(const struct mgcp_conn_rtp *conn)
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{
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return conn->type == MGCP_RTP_IUUP;
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}
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struct mgcp_conn *mgcp_conn_alloc(void *ctx, struct mgcp_endpoint *endp,
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enum mgcp_conn_type type, char *name);
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struct mgcp_conn *mgcp_conn_get(struct mgcp_endpoint *endp, const char *id);
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struct mgcp_conn_rtp *mgcp_conn_get_rtp(struct mgcp_endpoint *endp,
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const char *id);
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void mgcp_conn_free(struct mgcp_endpoint *endp, const char *id);
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void mgcp_conn_free_oldest(struct mgcp_endpoint *endp);
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void mgcp_conn_free_all(struct mgcp_endpoint *endp);
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char *mgcp_conn_dump(struct mgcp_conn *conn);
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struct mgcp_conn *mgcp_find_dst_conn(struct mgcp_conn *conn);
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struct mgcp_conn *mgcp_conn_get_oldest(struct mgcp_endpoint *endp);
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void mgcp_conn_watchdog_kick(struct mgcp_conn *conn);
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