rename sysmo_sock.cpp to osmobts_sock.cpp

This also renames the --enable-sysmbts option to --enable-osmobts

This socket interface was nevery sysmoBTS specific, but it is a generic
socket interface to any OsmoBTS supported layer1/hardware.  So it was a
mis-nomer so far.

1 files changed, 0 insertions, 310 deletions

diff --git a/src/sysmo_sock.cpp b/src/sysmo_sock.cpp
deleted file mode 100644
index 951653e2..00000000
--- a/src/sysmo_sock.cpp
+++ /dev/null
@@ -1,310 +0,0 @@
-/* sysmo_sock.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 <gprs_bssgp_pcu.h>
-#include <pcuif_proto.h>
-#include <bts.h>
-#include <tbf.h>
-
-extern void *tall_pcu_ctx;
-
-extern "C" {
-int l1if_close_pdch(void *obj);
-}
-
-/*
- * 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 void pcu_sock_timeout(void *_priv);
-
-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, int lost)
-{
-	struct osmo_fd *bfd = &state->conn_bfd;
-	struct gprs_rlcmac_bts *bts = bts_main_data();
-	uint8_t trx, ts;
-
-	LOGP(DL1IF, LOGL_NOTICE, "PCU socket has %s connection\n",
-		(lost) ? "LOST" : "closed");
-
-	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, kick all TBFs */
-	for (trx = 0; trx < 8; trx++) {
-#ifdef ENABLE_SYSMODSP
-		if (bts->trx[trx].fl1h) {
-			l1if_close_pdch(bts->trx[trx].fl1h);
-			bts->trx[trx].fl1h = NULL;
-		}
-#endif
-		for (ts = 0; ts < 8; ts++)
-			bts->trx[trx].pdch[ts].disable();
-#warning "NOT ALL RESOURCES are freed in this case... inconsistent with the other code. Share the code with pcu_l1if.c for the reset."
-		gprs_rlcmac_tbf::free_all(&bts->trx[trx]);
-	}
-
-	gprs_bssgp_destroy();
-	exit(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, 1);
-	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, 1);
-
-	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;
-
-	state = pcu_sock_state;
-	if (!state) {
-		state = talloc_zero(tall_pcu_ctx, 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);
-		pcu_sock_state = state;
-		close(bfd->fd);
-		bfd->fd = -1;
-		state->timer.cb = pcu_sock_timeout;
-		osmo_timer_schedule(&state->timer, 5, 0);
-		return 0;
-	}
-
-	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;
-
-	osmo_timer_del(&state->timer);
-
-	bfd = &state->conn_bfd;
-	if (bfd->fd > 0)
-		pcu_sock_close(state, 0);
-	talloc_free(state);
-	pcu_sock_state = NULL;
-}
-
-static void pcu_sock_timeout(void *_priv)
-{
-	pcu_l1if_open();
-}