move everything to src/ subdirectory

The code corresponds to commit a9aa4777cc1144897a77dfb6c5c3d7325705251e
in openbts-p2.8.git (Tue Jun 12 18:14:49 2012 +0400)

1 files changed, 191 insertions, 0 deletions

diff --git a/src/pcu_main.cpp b/src/pcu_main.cpp
new file mode 100644
index 00000000..f26c6d86
--- /dev/null
+++ b/src/pcu_main.cpp
@@ -0,0 +1,191 @@
+/* pcu_main.cpp
+ *
+ * Copyright (C) 2012 Ivan Klyuchnikov
+ *
+ * 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 <gprs_bssgp_pcu.h>
+#include <arpa/inet.h>
+#include <pcu_l1_if.h>
+#include <gsm_timer.h>
+#include <gprs_debug.h>
+
+// TODO: We should move this parameters to config file.
+#define SGSN_IP "127.0.0.1"
+#define SGSN_PORT 23000
+#define NSVCI 4
+#define PCU_L1_IF_PORT 5944
+
+struct l1fwd_hdl *l1fh = talloc_zero(NULL, struct l1fwd_hdl);
+
+int sgsn_ns_cb(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, struct msgb *msg, uint16_t bvci)
+{
+	int rc = 0;
+	switch (event) {
+	case GPRS_NS_EVT_UNIT_DATA:
+		/* hand the message into the BSSGP implementation */
+		rc = gprs_bssgp_pcu_rcvmsg(msg);
+		break;
+	default:
+		LOGP(DPCU, LOGL_ERROR, "RLCMAC: Unknown event %u from NS\n", event);
+		if (msg)
+			talloc_free(msg);
+		rc = -EIO;
+		break;
+	}
+	return rc;
+}
+
+/* data has arrived on the udp socket */
+static int udp_read_cb(struct osmo_fd *ofd)
+{
+	struct msgb *msg = msgb_alloc_headroom(2048, 128, "udp_rx");
+	struct l1fwd_hdl *l1fh = (l1fwd_hdl *)ofd->data;
+	struct femtol1_hdl *fl1h = l1fh->fl1h;
+	int rc;
+
+	if (!msg)
+		return -ENOMEM;
+
+	msg->l1h = msg->data;
+
+	l1fh->remote_sa_len = sizeof(l1fh->remote_sa);
+	rc = recvfrom(ofd->fd, msg->l1h, msgb_tailroom(msg), 0,
+			(struct sockaddr *) &l1fh->remote_sa, &l1fh->remote_sa_len);
+	if (rc < 0) {
+		perror("read from udp");
+		msgb_free(msg);
+		return rc;
+	} else if (rc == 0) {
+		perror("len=0 read from udp");
+		msgb_free(msg);
+		return rc;
+	}
+	msgb_put(msg, rc);
+
+	rc = pcu_l1if_handle_l1prim(fl1h, msg);
+	return rc;
+}
+
+/* callback when we can write to the UDP socket */
+static int udp_write_cb(struct osmo_fd *ofd, struct msgb *msg)
+{
+	int rc;
+	struct l1fwd_hdl *l1fh = (l1fwd_hdl *)ofd->data;
+
+	//DEBUGP(DGPRS, "UDP: Writing %u bytes for MQ_L1_WRITE queue\n", msgb_l1len(msg));
+
+	rc = sendto(ofd->fd, msg->l1h, msgb_l1len(msg), 0,
+			(const struct sockaddr *)&l1fh->remote_sa, l1fh->remote_sa_len);
+	if (rc < 0) {
+		LOGP(DPCU, LOGL_ERROR, "error writing to L1 msg_queue: %s\n",
+			strerror(errno));
+		return rc;
+	} else if (rc < msgb_l1len(msg)) {
+		LOGP(DPCU, LOGL_ERROR, "short write to L1 msg_queue: "
+			"%u < %u\n", rc, msgb_l1len(msg));
+		return -EIO;
+	}
+
+	return 0;
+}
+
+int pcu_l1if_open()
+{
+	//struct l1fwd_hdl *l1fh;
+	struct femtol1_hdl *fl1h;
+	int rc;
+
+	/* allocate new femtol1_handle */
+	fl1h = talloc_zero(NULL, struct femtol1_hdl);
+	INIT_LLIST_HEAD(&fl1h->wlc_list);
+
+	l1fh->fl1h = fl1h;
+	fl1h->priv = l1fh;
+
+	struct osmo_wqueue * queue = &((l1fh->fl1h)->write_q);
+	osmo_wqueue_init(queue, 10);
+	queue->bfd.when |= BSC_FD_READ;
+	queue->bfd.data = l1fh;
+	queue->bfd.priv_nr = 0;
+
+	/* Open UDP */
+	struct osmo_wqueue *wq = &l1fh->udp_wq;
+
+	osmo_wqueue_init(wq, 10);
+	wq->write_cb = udp_write_cb;
+	wq->read_cb = udp_read_cb;
+	wq->bfd.when |= BSC_FD_READ;
+	wq->bfd.data = l1fh;
+	wq->bfd.priv_nr = 0;
+	rc = osmo_sock_init_ofd(&wq->bfd, AF_UNSPEC, SOCK_DGRAM,
+				IPPROTO_UDP, NULL, PCU_L1_IF_PORT,
+				OSMO_SOCK_F_BIND);
+	if (rc < 0) {
+		perror("sock_init");
+		exit(1);
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	uint16_t nsvci = NSVCI;
+	struct gprs_ns_inst *sgsn_nsi;
+	struct gprs_nsvc *nsvc;
+	osmo_init_logging(&gprs_log_info);
+	pcu_l1if_open();
+
+	sgsn_nsi = gprs_ns_instantiate(&sgsn_ns_cb);
+	bssgp_nsi = sgsn_nsi;
+
+	if (!bssgp_nsi)
+	{
+		LOGP(DPCU, LOGL_ERROR, "Unable to instantiate NS\n");
+		exit(1);
+	}
+	bctx = btsctx_alloc(BVCI, NSEI);
+	bctx->cell_id = CELL_ID;
+	bctx->nsei = NSEI;
+	bctx->ra_id.mnc = MNC;
+	bctx->ra_id.mcc = MCC;
+	bctx->ra_id.lac = PCU_LAC;
+	bctx->ra_id.rac = PCU_RAC;
+	bctx->bvci = BVCI;
+	uint8_t cause = 39;
+	gprs_ns_nsip_listen(sgsn_nsi);
+
+	struct sockaddr_in dest;
+	dest.sin_family = AF_INET;
+	dest.sin_port = htons(SGSN_PORT);
+	inet_aton(SGSN_IP, &dest.sin_addr);
+
+	nsvc = nsip_connect(sgsn_nsi, &dest, NSEI, nsvci);
+	unsigned i = 0;
+	while (1) 
+	{
+		osmo_gsm_timers_check();
+		osmo_gsm_timers_prepare();
+		osmo_gsm_timers_update();
+
+		osmo_select_main(0);
+		if (i == 7)
+		{
+			bssgp_tx_bvc_reset(bctx, BVCI, cause);
+		}
+		i++;
+	}
+}
+