| /* Endpoint types */ |
| |
| /* |
| * (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/core/msgb.h> |
| #include <osmocom/gsm/i460_mux.h> |
| #include <osmocom/mgcp/mgcp_protocol.h> |
| |
| struct sockaddr; |
| struct mgcp_conn; |
| struct mgcp_conn_rtp; |
| struct mgcp_endpoint; |
| |
| /* Number of E1 subslots (different variants, not all useable at the same time) */ |
| #define MGCP_ENDP_E1_SUBSLOTS 15 |
| |
| #define LOGPENDP(endp, cat, level, fmt, args...) \ |
| LOGP(cat, level, "endpoint:%s " fmt, \ |
| endp ? endp->name : "none", \ |
| ## args) |
| |
| struct osmo_rtp_msg_ctx { |
| int proto; |
| struct mgcp_conn_rtp *conn_src; |
| struct osmo_sockaddr *from_addr; |
| }; |
| |
| #define OSMO_RTP_MSG_CTX(MSGB) ((struct osmo_rtp_msg_ctx*)(MSGB)->cb) |
| |
| osmo_static_assert(sizeof(((struct msgb*)0)->cb) >= sizeof(struct osmo_rtp_msg_ctx), osmo_rtp_msg_ctx_fits_in_msgb_cb); |
| |
| /* Callback type for RTP dispatcher functions (e.g mgcp_dispatch_rtp_bridge_cb, see below). |
| * The OSMO_RTP_MSG_CTX() should be set appropriately on the msg. */ |
| typedef int (*mgcp_dispatch_rtp_cb) (struct msgb *msg); |
| |
| /* Callback type for endpoint specific cleanup actions. This function |
| * is automatically executed when a connection is freed (see mgcp_conn_free() |
| * in mgcp_conn.c). Depending on the type of the endpoint there may be endpoint |
| * specific things to take care of once a connection has been removed. */ |
| typedef void (*mgcp_cleanup_cp) (struct mgcp_endpoint *endp, |
| struct mgcp_conn *conn); |
| |
| /*! MGCP endpoint properties */ |
| struct mgcp_endpoint_type { |
| /*! maximum number of connections */ |
| int max_conns; |
| |
| /*! callback that defines how to dispatch incoming RTP data */ |
| mgcp_dispatch_rtp_cb dispatch_rtp_cb; |
| |
| /*! callback that implements endpoint specific cleanup actions */ |
| mgcp_cleanup_cp cleanup_cb; |
| }; |
| |
| /*! MGCP endpoint typeset */ |
| struct mgcp_endpoint_typeset { |
| struct mgcp_endpoint_type rtp; |
| struct mgcp_endpoint_type e1; |
| }; |
| |
| /*! static MGCP endpoint typeset (pre-initalized, read-only) */ |
| extern const struct mgcp_endpoint_typeset ep_typeset; |
| |
| /*! MGCP endpoint model */ |
| struct mgcp_endpoint { |
| |
| /*! Unique endpoint name, used for addressing via MGCP */ |
| char *name; |
| |
| /*! Call identifier string (as supplied by the call agant) */ |
| char *callid; |
| |
| /*! Local connection options (see mgcp_internal.h) */ |
| struct mgcp_lco local_options; |
| |
| /*! List of struct mgcp_conn, of the connections active on this endpoint */ |
| struct llist_head conns; |
| |
| /*! Backpointer to the trunk this endpoint belongs to */ |
| struct mgcp_trunk *trunk; |
| |
| /*! Endpoint properties (see above) */ |
| const struct mgcp_endpoint_type *type; |
| |
| /*! Last MGCP transmission (in case re-transmission is required) */ |
| char *last_trans; |
| |
| /*! Last MGCP response (in case re-transmission is required) */ |
| char *last_response; |
| |
| /*! MGCP_X_OSMO_IGN_* flags from 'X-Osmo-IGN:' header */ |
| uint32_t x_osmo_ign; |
| |
| /* E1 specific */ |
| struct { |
| struct osmo_i460_schan_desc scd; |
| struct osmo_i460_subchan *schan; |
| struct osmo_fsm_inst *trau_sync_fi; |
| struct osmo_trau2rtp_state *trau_rtp_st; |
| uint8_t last_amr_ft; |
| struct mgcp_rtp_codec *last_codec; |
| } e1; |
| |
| }; |
| |
| struct mgcp_endpoint *mgcp_endp_alloc(struct mgcp_trunk *trunk, unsigned int index); |
| void mgcp_endp_release(struct mgcp_endpoint *endp); |
| int mgcp_endp_claim(struct mgcp_endpoint *endp, const char *callid); |
| void mgcp_endp_update(struct mgcp_endpoint *endp); |
| bool mgcp_endp_is_wildcarded(const char *epname); |
| struct mgcp_endpoint *mgcp_endp_by_name_trunk(int *cause, const char *epname, |
| const struct mgcp_trunk *trunk); |
| struct mgcp_endpoint *mgcp_endp_by_name(int *cause, const char *epname, |
| struct mgcp_config *cfg); |
| bool mgcp_endp_avail(struct mgcp_endpoint *endp); |
| void mgcp_endp_add_conn(struct mgcp_endpoint *endp, struct mgcp_conn *conn); |
| void mgcp_endp_remove_conn(struct mgcp_endpoint *endp, struct mgcp_conn *conn); |
| void mgcp_endp_strip_name(char *epname_stripped, const char *epname, |
| const struct mgcp_trunk *trunk); |
| struct mgcp_endpoint *mgcp_endp_find_specific(const char *epname, |
| const struct mgcp_trunk *trunk); |