Initial code import

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

4 files changed, 206 insertions, 0 deletions

diff --git a/include/Makefile.am b/include/Makefile.am
new file mode 100644
index 0000000..e74dd6e
--- /dev/null
+++ b/include/Makefile.am
@@ -0,0 +1 @@
+nobase_include_HEADERS = osmocom/e1d/proto_clnt.h  osmocom/e1d/proto.h  osmocom/e1d/proto_srv.h
diff --git a/include/osmocom/e1d/proto.h b/include/osmocom/e1d/proto.h
new file mode 100644
index 0000000..a3c94bb
--- /dev/null
+++ b/include/osmocom/e1d/proto.h
@@ -0,0 +1,109 @@
+/*
+ * proto.h
+ *
+ * (C) 2019 by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * 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 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.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include <osmocom/core/select.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_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_TS_OPEN	= 0x04,
+	E1DP_EVT_TYPE		= 0x40,
+	E1DP_RESP_TYPE		= 0x80,
+	E1DP_ERR_TYPE		= 0xc0,
+	E1DP_TYPE_MSK		= 0xc0,
+};
+
+enum osmo_e1dp_ts_mode {
+	E1DP_TSMODE_OFF		= 0x00,
+	E1DP_TSMODE_RAW		= 0x10,
+	E1DP_TSMODE_HDLCFCS	= 0x11,
+};
+
+
+#define E1DP_MAGIC	0x00e1
+#define E1DP_MAX_LEN	4096
+#define E1DP_INVALID	0xff
+
+
+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_info {
+	uint8_t id;
+	uint8_t status;		/* TBD */
+} __attribute__((packed));
+
+struct osmo_e1dp_ts_config {
+	uint8_t mode;
+} __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);
diff --git a/include/osmocom/e1d/proto_clnt.h b/include/osmocom/e1d/proto_clnt.h
new file mode 100644
index 0000000..9288af9
--- /dev/null
+++ b/include/osmocom/e1d/proto_clnt.h
@@ -0,0 +1,47 @@
+/*
+ * proto_clnt.h
+ *
+ * (C) 2019 by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * 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 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.
+ */
+
+#pragma once
+
+#include <osmocom/core/msgb.h>
+
+#include <osmocom/e1d/proto.h>
+
+struct osmo_e1dp_client;
+
+struct osmo_e1dp_client *osmo_e1dp_client_create(void *ctx, const char *path);
+void osmo_e1dp_client_destroy(struct osmo_e1dp_client *srv);
+
+int osmo_e1dp_client_intf_query(struct osmo_e1dp_client *clnt,
+	struct osmo_e1dp_intf_info **ii, int *n,
+	uint8_t intf);
+int osmo_e1dp_client_line_query(struct osmo_e1dp_client *clnt,
+	struct osmo_e1dp_line_info **li, int *n,
+	uint8_t intf, uint8_t line);
+int osmo_e1dp_client_ts_query(struct osmo_e1dp_client *clnt,
+	struct osmo_e1dp_ts_info **ti, int *n,
+	uint8_t intf, uint8_t line, uint8_t ts);
+int osmo_e1dp_client_ts_open(struct osmo_e1dp_client *clnt,
+	uint8_t intf, uint8_t line, uint8_t ts,
+	enum osmo_e1dp_ts_mode mode);
diff --git a/include/osmocom/e1d/proto_srv.h b/include/osmocom/e1d/proto_srv.h
new file mode 100644
index 0000000..c5faec8
--- /dev/null
+++ b/include/osmocom/e1d/proto_srv.h
@@ -0,0 +1,49 @@
+/*
+ * proto_srv.h
+ *
+ * (C) 2019 by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * 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 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.
+ */
+
+#pragma once
+
+#include <osmocom/core/msgb.h>
+
+struct osmo_e1dp_server;
+
+#define E1DP_SF_INTF_OPT	(1<<0)
+#define E1DP_SF_INTF_REQ	(1<<1)
+#define E1DP_SF_LINE_OPT	(1<<2)
+#define E1DP_SF_LINE_REQ	(1<<3)
+#define E1DP_SF_TS_OPT		(1<<4)
+#define E1DP_SF_TS_REQ		(1<<5)
+
+typedef int (*osmo_e1dp_server_handler_fn)(void *data, struct msgb *msgb, struct msgb *rmsgb, int *rfd);
+
+struct osmo_e1dp_server_handler {
+	uint8_t type;
+	int flags;
+	int payload_len;
+	osmo_e1dp_server_handler_fn fn;
+};
+
+struct osmo_e1dp_server *osmo_e1dp_server_create(void *ctx, const char *path,
+	struct osmo_e1dp_server_handler *handlers, void *handler_data);
+void osmo_e1dp_server_destroy(struct osmo_e1dp_server *srv);