142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
/*
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* proto.h
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*
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* (C) 2019 by Sylvain Munaut <tnt@246tNt.com>
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* (C) 2020 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* SPDX-License-Identifier: LGPL-3.0-or-later
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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 Lesser General Public License as published
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* by 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 General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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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#pragma once
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#include <stdint.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/utils.h>
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/* E1DP_CMD_INTF_QUERY
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* filter: intf (optional)
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* in: n/a
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* out: array of osmo_e1dp_intf_info
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*
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* E1DP_CMD_LINE_QUERY
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* filter: intf (required), line (optional)
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* in: n/a
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* out: array of osmo_e1dp_line_info
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*
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* E1DP_CMD_TS_QUERY
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* filter: intf (required), line (required), ts (optional)
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* in: n/a
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* out: array of osmo_e1dp_ts_info
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*
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* E1DP_CMD_LINE_CONFIG
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* filter: intf (required), line (required)
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* in: osmo_e1dp_line_config
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* out: osmo_e1dp_line_info
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*
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* E1DP_CMD_TS_OPEN
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* filter: intf (required), line (required), ts (required)
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* in: osmo_e1dp_ts_config
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* out: osmo_e1dp_ts_info with the opened TS (or an invalid one with id == -1 for errors)
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* + message with the file descriptor
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*/
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enum osmo_e1dp_msg_type {
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E1DP_CMD_INTF_QUERY = 0x00,
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E1DP_CMD_LINE_QUERY = 0x01,
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E1DP_CMD_TS_QUERY = 0x02,
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E1DP_CMD_LINE_CONFIG = 0x03,
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E1DP_CMD_TS_OPEN = 0x04,
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E1DP_EVT_TYPE = 0x40,
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E1DP_RESP_TYPE = 0x80,
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E1DP_ERR_TYPE = 0xc0,
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E1DP_TYPE_MSK = 0xc0,
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};
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enum osmo_e1dp_line_mode {
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E1DP_LMODE_OFF = 0x00,
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E1DP_LMODE_CHANNELIZED = 0x20,
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E1DP_LMODE_SUPERCHANNEL = 0x21,
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E1DP_LMODE_E1OIP = 0x22,
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};
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enum osmo_e1dp_ts_mode {
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E1DP_TSMODE_OFF = 0x00,
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E1DP_TSMODE_RAW = 0x10,
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E1DP_TSMODE_HDLCFCS = 0x11,
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};
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/* osmo_e1dp_ts_config.flags */
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#define E1DP_TS_OPEN_F_FORCE 0x80
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/* the idea here is to use the first byte as a version number, to prevent incompatible
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* clients from connecting to e1d */
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#define E1DP_MAGIC 0x01e1
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#define E1DP_MAX_LEN 4096
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#define E1DP_TS_SUPERCHAN 0xfe
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#define E1DP_INVALID 0xff
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#define E1DP_DEFAULT_SOCKET "/tmp/osmo-e1d.ctl"
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#define E1DP_MAX_SIZE_HDLC 264
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struct osmo_e1dp_msg_hdr {
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uint16_t magic;
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uint16_t len;
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uint8_t type;
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uint8_t intf;
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uint8_t line;
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uint8_t ts;
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} __attribute__((packed));
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struct osmo_e1dp_intf_info {
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uint8_t id;
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uint8_t n_lines;
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} __attribute__((packed));
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struct osmo_e1dp_line_config {
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uint8_t mode;
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} __attribute__((packed));
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struct osmo_e1dp_line_info {
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uint8_t id;
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struct osmo_e1dp_line_config cfg;
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uint8_t status; /* TBD */
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} __attribute__((packed));
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struct osmo_e1dp_ts_config {
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uint8_t mode;
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uint8_t flags;
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uint16_t read_bufsize;
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} __attribute__((packed));
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struct osmo_e1dp_ts_info {
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uint8_t id;
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struct osmo_e1dp_ts_config cfg;
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uint8_t status; /* TBD */
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} __attribute__((packed));
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struct msgb *osmo_e1dp_recv(struct osmo_fd *ofd, int *fd);
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int osmo_e1dp_send(struct osmo_fd *ofd, struct msgb *msgb, int fd);
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extern const struct value_string osmo_e1dp_msg_type_names[];
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extern const struct value_string osmo_e1dp_line_mode_names[];
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extern const struct value_string osmo_e1dp_ts_mode_names[];
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