1 files changed, 0 insertions, 562 deletions
diff --git a/src/sysmo_l1_if.cpp b/src/sysmo_l1_if.cpp
deleted file mode 100644
index 09a31495..00000000
--- a/src/sysmo_l1_if.cpp
+++ /dev/null
@@ -1,562 +0,0 @@
-/* sysmo_l1_if.cpp
- *
- * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu>
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-extern "C" {
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/select.h>
-#include <osmocom/core/msgb.h>
-}
-
-#include <gprs_rlcmac.h>
-#include <pcu_l1_if.h>
-#include <gprs_debug.h>
-#include "../../osmo-bts/include/osmo-bts/pcuif_proto.h"
-
-static int pcu_sock_send(struct msgb *msg);
-static void pcu_sock_timeout(void *_priv);
-
-struct pcu_l1if_bts pcu_l1if_bts;
-
-// Variable for storage current FN.
-int frame_number;
-
-int get_current_fn()
-{
-	return frame_number;
-}
-
-void set_current_fn(int fn)
-{
-	frame_number = fn;
-}
-
-/*
- * PCU messages
- */
-
-struct msgb *pcu_msgb_alloc(uint8_t msg_type, uint8_t bts_nr)
-{
-	struct msgb *msg;
-	struct gsm_pcu_if *pcu_prim;
-
-	msg = msgb_alloc(sizeof(struct gsm_pcu_if), "pcu_sock_tx");
-	if (!msg)
-		return NULL;
-	msgb_put(msg, sizeof(struct gsm_pcu_if));
-	pcu_prim = (struct gsm_pcu_if *) msg->data;
-	pcu_prim->msg_type = msg_type;
-	pcu_prim->bts_nr = bts_nr;
-
-	return msg;
-}
-
-static int pcu_tx_act_req(uint8_t trx, uint8_t ts, uint8_t activate)
-{
-	struct msgb *msg;
-	struct gsm_pcu_if *pcu_prim;
-	struct gsm_pcu_if_act_req *act_req;
-
-	LOGP(DL1IF, LOGL_INFO, "Sending %s request: trx=%d ts=%d\n",
-		(activate) ? "activate" : "deactivate", trx, ts);
-
-	msg = pcu_msgb_alloc(PCU_IF_MSG_ACT_REQ, 0);
-	if (!msg)
-		return -ENOMEM;
-	pcu_prim = (struct gsm_pcu_if *) msg->data;
-	act_req = &pcu_prim->u.act_req;
-	act_req->activate = activate;
-	act_req->trx_nr = trx;
-	act_req->ts_nr = ts;
-
-	return pcu_sock_send(msg);
-}
-
-static int pcu_tx_data_req(uint8_t trx, uint8_t ts, uint8_t sapi,
-	uint16_t arfcn, uint32_t fn, uint8_t block_nr, uint8_t *data,
-	uint8_t len)
-{
-	struct msgb *msg;
-	struct gsm_pcu_if *pcu_prim;
-	struct gsm_pcu_if_data *data_req;
-
-	LOGP(DL1IF, LOGL_DEBUG, "Sending data request: trx=%d ts=%d sapi=%d "
-		"arfcn=%d fn=%d block=%d data=%s\n", trx, ts, sapi, arfcn, fn,
-		block_nr, osmo_hexdump(data, len));
-
-	msg = pcu_msgb_alloc(PCU_IF_MSG_DATA_REQ, 0);
-	if (!msg)
-		return -ENOMEM;
-	pcu_prim = (struct gsm_pcu_if *) msg->data;
-	data_req = &pcu_prim->u.data_req;
-
-	data_req->sapi = sapi;
-	data_req->fn = fn;
-	data_req->arfcn = arfcn;
-	data_req->trx_nr = trx;
-	data_req->ts_nr = ts;
-	data_req->block_nr = block_nr;
-	memcpy(data_req->data, data, len);
-	data_req->len = len;
-
-	return pcu_sock_send(msg);
-}
-
-void pcu_l1if_tx_pdtch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn,
-	uint32_t fn, uint8_t block_nr)
-{
-	pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PDTCH, arfcn, fn, block_nr,
-		msg->data, msg->len);
-	msgb_free(msg);
-}
-
-void pcu_l1if_tx_ptcch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn,
-	uint32_t fn, uint8_t block_nr)
-{
-	pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PTCCH, arfcn, fn, block_nr,
-		msg->data, msg->len);
-	msgb_free(msg);
-}
-
-void pcu_l1if_tx_agch(bitvec * block, int len)
-{
-	uint8_t data[24]; /* prefix PLEN */
-	
-	/* FIXME: why does OpenBTS has no PLEN and no fill in message? */
-	bitvec_pack(block, data + 1);
-	data[0] = (len << 2) | 0x01;
-	pcu_tx_data_req(0, 0, PCU_IF_SAPI_AGCH, 0, 0, 0, data, 23);
-}
-
-static void pcu_l1if_tx_bcch(uint8_t *data, int len)
-{
-	pcu_tx_data_req(0, 0, PCU_IF_SAPI_BCCH, 0, 0, 0, data, len);
-}
-
-static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind)
-{
-	int rc = 0;
-	bitvec *block;
-
-	LOGP(DL1IF, LOGL_DEBUG, "Data indication received: sapi=%d arfcn=%d "
-		"block=%d data=%s\n", data_ind->sapi,
-		data_ind->arfcn, data_ind->block_nr,
-		osmo_hexdump(data_ind->data, data_ind->len));
-
-	switch (data_ind->sapi) {
-	case PCU_IF_SAPI_PDTCH:
-		block = bitvec_alloc(data_ind->len);
-		if (!block) {
-			rc = -ENOMEM;
-			break;
-		}
-		bitvec_unpack(block, data_ind->data);
-		gprs_rlcmac_rcv_block(block);
-		bitvec_free(block);
-		break;
-	default:
-		LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with "
-			"unsupported sapi %d\n", data_ind->sapi);
-		rc = -EINVAL;
-	}
-
-	return rc;
-}
-
-static int pcu_rx_rts_req(struct gsm_pcu_if_rts_req *rts_req)
-{
-	int rc = 0;
-
-	LOGP(DL1IF, LOGL_DEBUG, "RTS request received: trx=%d ts=%d sapi=%d "
-		"arfcn=%d fn=%d block=%d\n", rts_req->trx_nr, rts_req->ts_nr,
-		rts_req->sapi, rts_req->arfcn, rts_req->fn, rts_req->block_nr);
-
-	switch (rts_req->sapi) {
-	case PCU_IF_SAPI_PDTCH:
-		gprs_rlcmac_rcv_rts_block(rts_req->trx_nr, rts_req->ts_nr,
-			rts_req->arfcn, rts_req->fn, rts_req->block_nr);
-		break;
-	case PCU_IF_SAPI_PTCCH:
-		/* FIXME */
-		{
-			struct msgb *msg = msgb_alloc(23, "l1_prim");
-			memset(msgb_put(msg, 23), 0x2b, 23);
-			pcu_l1if_tx_ptcch(msg, rts_req->trx_nr, rts_req->ts_nr,
-				rts_req->arfcn, rts_req->fn, rts_req->block_nr);
-		}
-		break;
-	default:
-		LOGP(DL1IF, LOGL_ERROR, "Received PCU RTS request with "
-			"unsupported sapi %d\n", rts_req->sapi);
-		rc = -EINVAL;
-	}
-
-	return rc;
-}
-
-static int pcu_rx_rach_ind(struct gsm_pcu_if_rach_ind *rach_ind)
-{
-	int rc = 0;
-
-	LOGP(DL1IF, LOGL_INFO, "RACH request received: sapi=%d "
-		"qta=%d, ra=%d, fn=%d\n", rach_ind->sapi, rach_ind->qta,
-		rach_ind->ra, rach_ind->fn);
-
-	switch (rach_ind->sapi) {
-	case PCU_IF_SAPI_RACH:
-		rc = gprs_rlcmac_rcv_rach(rach_ind->ra, rach_ind->fn,
-			rach_ind->qta);
-		break;
-	default:
-		LOGP(DL1IF, LOGL_ERROR, "Received PCU rach request with "
-			"unsupported sapi %d\n", rach_ind->sapi);
-		rc = -EINVAL;
-	}
-
-	return rc;
-}
-
-static int pcu_rx_info_ind(struct gsm_pcu_if_info_ind *info_ind)
-{
-	int rc = 0;
-	int trx, ts;
-//	uint8_t si13[23];
-
-	LOGP(DL1IF, LOGL_INFO, "Info indication received:\n");
-
-	if (!(info_ind->flags & PCU_IF_FLAG_ACTIVE)) {
-		LOGP(DL1IF, LOGL_NOTICE, "BTS not available\n");
-		return 0;
-	}
-	LOGP(DL1IF, LOGL_INFO, "BTS available\n");
-
-	for (trx = 0; trx < 8; trx++) {
-		pcu_l1if_bts.trx[trx].arfcn = info_ind->trx[trx].arfcn;
-		for (ts = 0; ts < 8; ts++) {
-			if ((info_ind->trx[trx].pdch_mask & (1 << ts))) {
-				/* FIXME: activate dynamically at RLCMAC */
-				if (!pcu_l1if_bts.trx[trx].ts[ts].enable)
-					pcu_tx_act_req(trx, ts, 1);
-				pcu_l1if_bts.trx[trx].ts[ts].enable = 1;
-				pcu_l1if_bts.trx[trx].ts[ts].tsc =
-					info_ind->trx[trx].tsc[ts];
-				LOGP(DL1IF, LOGL_INFO, "PDCH: trx=%d ts=%d\n",
-					trx, ts);
-			} else {
-				if (pcu_l1if_bts.trx[trx].ts[ts].enable)
-					pcu_tx_act_req(trx, ts, 0);
-				pcu_l1if_bts.trx[trx].ts[ts].enable = 0;
-			}
-		}
-	}
-
-#warning FIXME: RAC
-//	rc = generate_si13(si13, 0 /* rac */);
-//	printf("rc=%d\n", rc);
-//	pcu_l1if_tx_bcch(si13, 23);
-
-	return rc;
-}
-
-static int pcu_rx(uint8_t msg_type, struct gsm_pcu_if *pcu_prim)
-{
-	int rc = 0;
-
-	switch (msg_type) {
-	case PCU_IF_MSG_DATA_IND:
-		rc = pcu_rx_data_ind(&pcu_prim->u.data_ind);
-		break;
-	case PCU_IF_MSG_RTS_REQ:
-		rc = pcu_rx_rts_req(&pcu_prim->u.rts_req);
-		break;
-	case PCU_IF_MSG_RACH_IND:
-		rc = pcu_rx_rach_ind(&pcu_prim->u.rach_ind);
-		break;
-	case PCU_IF_MSG_INFO_IND:
-		rc = pcu_rx_info_ind(&pcu_prim->u.info_ind);
-		break;
-	default:
-		LOGP(DL1IF, LOGL_ERROR, "Received unknwon PCU msg type %d\n",
-			msg_type);
-		rc = -EINVAL;
-	}
-
-	return rc;
-}
-
-/*
- * SYSMO-PCU socket functions
- */
-
-struct pcu_sock_state {
-	struct osmo_fd conn_bfd;	/* fd for connection to lcr */
-	struct osmo_timer_list timer;	/* socket connect retry timer */
-	struct llist_head upqueue;	/* queue for sending messages */
-} *pcu_sock_state = NULL;
-
-static int pcu_sock_send(struct msgb *msg)
-{
-	struct pcu_sock_state *state = pcu_sock_state;
-	struct osmo_fd *conn_bfd;
-
-	if (!state) {
-		LOGP(DL1IF, LOGL_NOTICE, "PCU socket not created, dropping "
-			"message\n");
-		return -EINVAL;
-	}
-	conn_bfd = &state->conn_bfd;
-	if (conn_bfd->fd <= 0) {
-		LOGP(DL1IF, LOGL_NOTICE, "PCU socket not connected, dropping "
-			"message\n");
-		return -EIO;
-	}
-	msgb_enqueue(&state->upqueue, msg);
-	conn_bfd->when |= BSC_FD_WRITE;
-
-	return 0;
-}
-
-static void pcu_sock_close(struct pcu_sock_state *state)
-{
-	struct osmo_fd *bfd = &state->conn_bfd;
-
-	LOGP(DL1IF, LOGL_NOTICE, "PCU socket has LOST connection\n");
-
-	close(bfd->fd);
-	bfd->fd = -1;
-	osmo_fd_unregister(bfd);
-
-	/* flush the queue */
-	while (!llist_empty(&state->upqueue)) {
-		struct msgb *msg = msgb_dequeue(&state->upqueue);
-		msgb_free(msg);
-	}
-
-	/* disable all slots */
-	memset(&pcu_l1if_bts, 0, sizeof(pcu_l1if_bts));
-
-	state->timer.cb = pcu_sock_timeout;
-	osmo_timer_schedule(&state->timer, 5, 0);
-}
-
-static int pcu_sock_read(struct osmo_fd *bfd)
-{
-	struct pcu_sock_state *state = (struct pcu_sock_state *)bfd->data;
-	struct gsm_pcu_if *pcu_prim;
-	struct msgb *msg;
-	int rc;
-
-	msg = msgb_alloc(sizeof(*pcu_prim), "pcu_sock_rx");
-	if (!msg)
-		return -ENOMEM;
-
-	pcu_prim = (struct gsm_pcu_if *) msg->tail;
-
-	rc = recv(bfd->fd, msg->tail, msgb_tailroom(msg), 0);
-	if (rc == 0)
-		goto close;
-
-	if (rc < 0) {
-		if (errno == EAGAIN)
-			return 0;
-		goto close;
-	}
-
-	rc = pcu_rx(pcu_prim->msg_type, pcu_prim);
-
-	/* as we always synchronously process the message in pcu_rx() and
-	 * its callbacks, we can free the message here. */
-	msgb_free(msg);
-
-	return rc;
-
-close:
-	msgb_free(msg);
-	pcu_sock_close(state);
-	return -1;
-}
-
-static int pcu_sock_write(struct osmo_fd *bfd)
-{
-	struct pcu_sock_state *state = (struct pcu_sock_state *)bfd->data;
-	int rc;
-
-	while (!llist_empty(&state->upqueue)) {
-		struct msgb *msg, *msg2;
-		struct gsm_pcu_if *pcu_prim;
-
-		/* peek at the beginning of the queue */
-		msg = llist_entry(state->upqueue.next, struct msgb, list);
-		pcu_prim = (struct gsm_pcu_if *)msg->data;
-
-		bfd->when &= ~BSC_FD_WRITE;
-
-		/* bug hunter 8-): maybe someone forgot msgb_put(...) ? */
-		if (!msgb_length(msg)) {
-			LOGP(DL1IF, LOGL_ERROR, "message type (%d) with ZERO "
-				"bytes!\n", pcu_prim->msg_type);
-			goto dontsend;
-		}
-
-		/* try to send it over the socket */
-		rc = write(bfd->fd, msgb_data(msg), msgb_length(msg));
-		if (rc == 0)
-			goto close;
-		if (rc < 0) {
-			if (errno == EAGAIN) {
-				bfd->when |= BSC_FD_WRITE;
-				break;
-			}
-			goto close;
-		}
-
-dontsend:
-		/* _after_ we send it, we can deueue */
-		msg2 = msgb_dequeue(&state->upqueue);
-		assert(msg == msg2);
-		msgb_free(msg);
-	}
-	return 0;
-
-close:
-	pcu_sock_close(state);
-
-	return -1;
-}
-
-static int pcu_sock_cb(struct osmo_fd *bfd, unsigned int flags)
-{
-	int rc = 0;
-
-	if (flags & BSC_FD_READ)
-		rc = pcu_sock_read(bfd);
-	if (rc < 0)
-		return rc;
-
-	if (flags & BSC_FD_WRITE)
-		rc = pcu_sock_write(bfd);
-
-	return rc;
-}
-
-int pcu_l1if_open(void)
-{
-	struct pcu_sock_state *state;
-	struct osmo_fd *bfd;
-	struct sockaddr_un local;
-	unsigned int namelen;
-	int rc;
-
-	memset(&pcu_l1if_bts, 0, sizeof(pcu_l1if_bts));
-
-	state = pcu_sock_state;
-	if (!state) {
-		state = talloc_zero(NULL, struct pcu_sock_state);
-		if (!state)
-			return -ENOMEM;
-		INIT_LLIST_HEAD(&state->upqueue);
-	}
-
-	bfd = &state->conn_bfd;
-
-	bfd->fd = socket(AF_UNIX, SOCK_SEQPACKET, 0);
-	if (bfd->fd < 0) {
-		LOGP(DL1IF, LOGL_ERROR, "Failed to create PCU-SYSMO socket.\n");
-		talloc_free(state);
-		return -1;
-	}
-
-	local.sun_family = AF_UNIX;
-	strncpy(local.sun_path, "/tmp/pcu_bts", sizeof(local.sun_path));
-	local.sun_path[sizeof(local.sun_path) - 1] = '\0';
-
-	/* we use the same magic that X11 uses in Xtranssock.c for
-	 * calculating the proper length of the sockaddr */
-#if defined(BSD44SOCKETS) || defined(__UNIXWARE__)
-	local.sun_len = strlen(local.sun_path);
-#endif
-#if defined(BSD44SOCKETS) || defined(SUN_LEN)
-	namelen = SUN_LEN(&local);
-#else
-	namelen = strlen(local.sun_path) +
-		  offsetof(struct sockaddr_un, sun_path);
-#endif
-	rc = connect(bfd->fd, (struct sockaddr *) &local, namelen);
-	if (rc != 0) {
-		LOGP(DL1IF, LOGL_ERROR, "Failed to Connect the PCU-SYSMO "
-			"socket, delaying... '%s'\n", local.sun_path);
-		close(bfd->fd);
-		bfd->fd = -1;
-		state->timer.cb = pcu_sock_timeout;
-		osmo_timer_schedule(&state->timer, 5, 0);
-		return -1;
-	}
-
-	bfd->when = BSC_FD_READ;
-	bfd->cb = pcu_sock_cb;
-	bfd->data = state;
-
-	rc = osmo_fd_register(bfd);
-	if (rc < 0) {
-		LOGP(DL1IF, LOGL_ERROR, "Could not register PCU fd: %d\n", rc);
-		close(bfd->fd);
-		talloc_free(state);
-		return rc;
-	}
-
-	LOGP(DL1IF, LOGL_NOTICE, "PCU-SYSMO socket has been connected\n");
-
-	pcu_sock_state = state;
-
-	return 0;
-}
-
-void pcu_l1if_close(void)
-{
-	struct pcu_sock_state *state = pcu_sock_state;
-	struct osmo_fd *bfd;
-
-	if (!state)
-		return;
-
-	if (osmo_timer_pending(&state->timer))
-		osmo_timer_del(&state->timer);
-
-	bfd = &state->conn_bfd;
-	if (bfd->fd > 0)
-		pcu_sock_close(state);
-	talloc_free(state);
-	pcu_sock_state = NULL;
-}
-
-static void pcu_sock_timeout(void *_priv)
-{
-	pcu_l1if_open();
-}
-
-
-
-