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/*
* proto.h
*
* (C) 2019 by Sylvain Munaut <tnt@246tNt.com>
* (C) 2020 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* SPDX-License-Identifier: LGPL-3.0-or-later
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser 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 General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdint.h>
#include <osmocom/core/select.h>
#include <osmocom/core/utils.h>
/* E1DP_CMD_INTF_QUERY
* filter: intf (optional)
* in: n/a
* out: array of osmo_e1dp_intf_info
*
* E1DP_CMD_LINE_QUERY
* filter: intf (required), line (optional)
* in: n/a
* out: array of osmo_e1dp_line_info
*
* E1DP_CMD_TS_QUERY
* filter: intf (required), line (required), ts (optional)
* in: n/a
* out: array of osmo_e1dp_ts_info
*
* E1DP_CMD_LINE_CONFIG
* filter: intf (required), line (required)
* in: osmo_e1dp_line_config
* out: osmo_e1dp_line_info
*
* E1DP_CMD_TS_OPEN
* filter: intf (required), line (required), ts (required)
* in: osmo_e1dp_ts_config
* out: osmo_e1dp_ts_info with the opened TS (or an invalid one with id == -1 for errors)
* + message with the file descriptor
*/
enum osmo_e1dp_msg_type {
E1DP_CMD_INTF_QUERY = 0x00,
E1DP_CMD_LINE_QUERY = 0x01,
E1DP_CMD_TS_QUERY = 0x02,
E1DP_CMD_LINE_CONFIG = 0x03,
E1DP_CMD_TS_OPEN = 0x04,
E1DP_EVT_TYPE = 0x40,
E1DP_RESP_TYPE = 0x80,
E1DP_ERR_TYPE = 0xc0,
E1DP_TYPE_MSK = 0xc0,
};
enum osmo_e1dp_line_mode {
E1DP_LMODE_OFF = 0x00,
E1DP_LMODE_CHANNELIZED = 0x20,
E1DP_LMODE_SUPERCHANNEL = 0x21,
};
enum osmo_e1dp_ts_mode {
E1DP_TSMODE_OFF = 0x00,
E1DP_TSMODE_RAW = 0x10,
E1DP_TSMODE_HDLCFCS = 0x11,
};
/* osmo_e1dp_ts_config.flags */
#define E1DP_TS_OPEN_F_FORCE 0x80
/* the idea here is to use the first byte as a version number, to prevent incompatible
* clients from connecting to e1d */
#define E1DP_MAGIC 0x01e1
#define E1DP_MAX_LEN 4096
#define E1DP_TS_SUPERCHAN 0xfe
#define E1DP_INVALID 0xff
#define E1DP_DEFAULT_SOCKET "/tmp/osmo-e1d.ctl"
struct osmo_e1dp_msg_hdr {
uint16_t magic;
uint16_t len;
uint8_t type;
uint8_t intf;
uint8_t line;
uint8_t ts;
} __attribute__((packed));
struct osmo_e1dp_intf_info {
uint8_t id;
uint8_t n_lines;
} __attribute__((packed));
struct osmo_e1dp_line_config {
uint8_t mode;
} __attribute__((packed));
struct osmo_e1dp_line_info {
uint8_t id;
struct osmo_e1dp_line_config cfg;
uint8_t status; /* TBD */
} __attribute__((packed));
struct osmo_e1dp_ts_config {
uint8_t mode;
uint8_t flags;
uint16_t read_bufsize;
} __attribute__((packed));
struct osmo_e1dp_ts_info {
uint8_t id;
struct osmo_e1dp_ts_config cfg;
uint8_t status; /* TBD */
} __attribute__((packed));
struct msgb *osmo_e1dp_recv(struct osmo_fd *ofd, int *fd);
int osmo_e1dp_send(struct osmo_fd *ofd, struct msgb *msgb, int fd);
extern const struct value_string osmo_e1dp_msg_type_names[];
extern const struct value_string osmo_e1dp_line_mode_names[];
extern const struct value_string osmo_e1dp_ts_mode_names[];
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