/* Message connection list handling */ /* * (C) 2017 by sysmocom s.f.m.c. GmbH * 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 . * */ #pragma once #include #include #include #include #include #include #include #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, MGCP_RTP_IUUP, }; /*! 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 { struct osmo_iuup_instance *iui; bool active_init; /* true: Send IuUP Init */ int rfci_id_no_data; /* RFCI Id for RFCI NO_DATA (-1 if not available) */ bool configured; struct osmo_iuup_rnl_prim *init_ind; } iuup; 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; } /* Was conn configured to handle Osmux? */ static inline bool mgcp_conn_rtp_is_iuup(const struct mgcp_conn_rtp *conn) { return conn->type == MGCP_RTP_IUUP; } 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);