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/*
* e1d.h
*
* (C) 2019 by Sylvain Munaut <tnt@246tNt.com>
*
* All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdint.h>
#include <osmocom/core/isdnhdlc.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/rate_ctr.h>
#include <osmocom/vty/command.h>
enum e1d_vty_node {
E1D_NODE = _LAST_OSMOVTY_NODE + 1,
LINE_NODE
};
enum e1d_line_ctr {
LINE_CTR_LOS,
LINE_CTR_LOA,
LINE_CTR_CRC_ERR,
LINE_CTR_RX_OVFL,
LINE_CTR_TX_UNFL,
};
enum e1_ts_mode {
E1_TS_MODE_OFF = 0,
E1_TS_MODE_RAW,
E1_TS_MODE_HDLCFCS,
};
extern const struct value_string e1_ts_mode_names[];
struct e1_ts {
struct e1_line *line;
uint8_t id;
/* Mode */
enum e1_ts_mode mode;
/* HDLC handling */
struct {
struct osmo_isdnhdlc_vars tx;
struct osmo_isdnhdlc_vars rx;
uint8_t rx_buf[264];
uint8_t tx_buf[264];
int tx_ofs;
int tx_len;
} hdlc;
/* RAW handling */
struct {
uint8_t *rx_buf; /* actual buffer storage */
unsigned int rx_buf_size; /* size of 'buf' in bytes */
unsigned int rx_buf_used; /* number of bytes used so far */
} raw;
/* Remote end */
int fd;
};
enum e1_line_mode {
/* 31 individual 64k timeslots, as used on 3GPP Abis, 3GPP A or ISDN */
E1_LINE_MODE_CHANNELIZED,
/* 1 channel group spanning all 31 TS, as used e.g. when using Frame Relay
* or raw HDLC over channelized E1. */
E1_LINE_MODE_SUPERCHANNEL,
};
struct e1_line {
struct llist_head list;
struct e1_intf *intf;
uint8_t id;
enum e1_line_mode mode;
void *drv_data;
struct rate_ctr_group *ctrs;
/* timeslots for channelized mode */
struct e1_ts ts[32];
/* superchannel */
struct e1_ts superchan;
};
enum e1_driver {
E1_DRIVER_USB,
E1_DRIVER_VPAIR,
};
extern const struct value_string e1_driver_names[];
extern const struct value_string e1_line_mode_names[];
struct e1_intf {
struct llist_head list;
struct e1_daemon *e1d;
uint8_t id;
enum e1_driver drv;
void *drv_data;
struct llist_head lines;
};
struct e1_daemon {
void *ctx;
struct llist_head interfaces;
};
struct e1_line *
e1_intf_find_line(struct e1_intf *intf, uint8_t id);
struct e1_line *
e1_intf_find_line(struct e1_intf *intf, uint8_t id);
struct e1_intf *
e1_intf_new(struct e1_daemon *e1d, void *drv_data);
struct e1_intf *
e1d_find_intf(struct e1_daemon *e1d, uint8_t id);
void
e1_intf_destroy(struct e1_intf *intf);
struct e1_line *
e1_intf_find_line(struct e1_intf *intf, uint8_t id);
struct e1_line *
e1_line_new(struct e1_intf *intf, void *drv_data);
void
e1_line_destroy(struct e1_line *line);
int
e1_line_mux_out(struct e1_line *line, uint8_t *buf, int fts);
int
e1_line_demux_in(struct e1_line *line, const uint8_t *buf, int size);
void
e1_ts_stop(struct e1_ts *ts);
void
e1d_vty_init(struct e1_daemon *e1d);
int
e1d_vpair_create(struct e1_daemon *e1d, unsigned int num_lines);
struct e1_intf *
e1d_vpair_intf_peer(struct e1_intf *intf);
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