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authorHolger Hans Peter Freyther <zecke@selfish.org>2012-05-11 15:02:19 +0200
committerHolger Hans Peter Freyther <zecke@selfish.org>2012-05-17 09:37:22 +0200
commit41a93dc2f082111b8dbfea38cfd61855dd5cfd81 (patch)
treea219825e9000deffdcf6d04fd61b916ec2860710 /openbsc/src/osmo-bsc/osmo_bsc_rf.c
parenta8090d54d621af8781b3321270e9064813a5a814 (diff)
bsc: Move the osmo_bsc_rf file into the libbsc code and rename
The nitb will provide the RF interface as well.
Diffstat (limited to 'openbsc/src/osmo-bsc/osmo_bsc_rf.c')
-rw-r--r--openbsc/src/osmo-bsc/osmo_bsc_rf.c365
1 files changed, 0 insertions, 365 deletions
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_rf.c b/openbsc/src/osmo-bsc/osmo_bsc_rf.c
deleted file mode 100644
index e3f4e997..00000000
--- a/openbsc/src/osmo-bsc/osmo_bsc_rf.c
+++ /dev/null
@@ -1,365 +0,0 @@
-/* RF Ctl handling socket */
-
-/* (C) 2010 by Harald Welte <laforge@gnumonks.org>
- * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
- * (C) 2010 by On-Waves
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <openbsc/osmo_bsc_rf.h>
-#include <openbsc/debug.h>
-#include <openbsc/gsm_data.h>
-#include <openbsc/signal.h>
-#include <openbsc/osmo_msc_data.h>
-#include <openbsc/ipaccess.h>
-
-#include <osmocom/core/talloc.h>
-#include <osmocom/gsm/protocol/gsm_12_21.h>
-
-#include <sys/socket.h>
-#include <sys/un.h>
-
-#include <errno.h>
-#include <unistd.h>
-
-#define RF_CMD_QUERY '?'
-#define RF_CMD_OFF '0'
-#define RF_CMD_ON '1'
-#define RF_CMD_D_OFF 'd'
-#define RF_CMD_ON_G 'g'
-
-static int lock_each_trx(struct gsm_network *net, int lock)
-{
- struct gsm_bts *bts;
-
- llist_for_each_entry(bts, &net->bts_list, list) {
- struct gsm_bts_trx *trx;
- llist_for_each_entry(trx, &bts->trx_list, list) {
- gsm_trx_lock_rf(trx, lock);
- }
- }
-
- return 0;
-}
-
-static void send_resp(struct osmo_bsc_rf_conn *conn, char send)
-{
- struct msgb *msg;
-
- msg = msgb_alloc(10, "RF Query");
- if (!msg) {
- LOGP(DLINP, LOGL_ERROR, "Failed to allocate response msg.\n");
- return;
- }
-
- msg->l2h = msgb_put(msg, 1);
- msg->l2h[0] = send;
-
- if (osmo_wqueue_enqueue(&conn->queue, msg) != 0) {
- LOGP(DLINP, LOGL_ERROR, "Failed to enqueue the answer.\n");
- msgb_free(msg);
- return;
- }
-
- return;
-}
-
-
-/*
- * Send a
- * 'g' when we are in grace mode
- * '1' when one TRX is online,
- * '0' otherwise
- */
-static void handle_query(struct osmo_bsc_rf_conn *conn)
-{
- struct gsm_bts *bts;
- char send = RF_CMD_OFF;
-
- if (conn->rf->policy == S_RF_GRACE)
- return send_resp(conn, RF_CMD_ON_G);
-
- llist_for_each_entry(bts, &conn->rf->gsm_network->bts_list, list) {
- struct gsm_bts_trx *trx;
- llist_for_each_entry(trx, &bts->trx_list, list) {
- if (trx->mo.nm_state.availability == NM_AVSTATE_OK &&
- trx->mo.nm_state.operational != NM_OPSTATE_DISABLED) {
- send = RF_CMD_ON;
- break;
- }
- }
- }
-
- send_resp(conn, send);
-}
-
-static void rf_check_cb(void *_data)
-{
- struct gsm_bts *bts;
- struct osmo_bsc_rf *rf = _data;
-
- llist_for_each_entry(bts, &rf->gsm_network->bts_list, list) {
- struct gsm_bts_trx *trx;
-
- /* don't bother to check a booting or missing BTS */
- if (!bts->oml_link || !is_ipaccess_bts(bts))
- continue;
-
- llist_for_each_entry(trx, &bts->trx_list, list) {
- if (trx->mo.nm_state.availability != NM_AVSTATE_OK ||
- trx->mo.nm_state.operational != NM_OPSTATE_ENABLED ||
- trx->mo.nm_state.administrative != NM_STATE_UNLOCKED) {
- LOGP(DNM, LOGL_ERROR, "RF activation failed. Starting again.\n");
- ipaccess_drop_oml(bts);
- break;
- }
- }
- }
-}
-
-static void send_signal(struct osmo_bsc_rf *rf, int val)
-{
- struct rf_signal_data sig;
- sig.net = rf->gsm_network;
-
- rf->policy = val;
- osmo_signal_dispatch(SS_RF, val, &sig);
-}
-
-static int switch_rf_off(struct osmo_bsc_rf *rf)
-{
- lock_each_trx(rf->gsm_network, 1);
- send_signal(rf, S_RF_OFF);
-
- return 0;
-}
-
-static void grace_timeout(void *_data)
-{
- struct osmo_bsc_rf *rf = (struct osmo_bsc_rf *) _data;
-
- LOGP(DLINP, LOGL_NOTICE, "Grace timeout. Disabling the TRX.\n");
- switch_rf_off(rf);
-}
-
-static int enter_grace(struct osmo_bsc_rf *rf)
-{
- rf->grace_timeout.cb = grace_timeout;
- rf->grace_timeout.data = rf;
- osmo_timer_schedule(&rf->grace_timeout, rf->gsm_network->bsc_data->mid_call_timeout, 0);
- LOGP(DLINP, LOGL_NOTICE, "Going to switch RF off in %d seconds.\n",
- rf->gsm_network->bsc_data->mid_call_timeout);
-
- send_signal(rf, S_RF_GRACE);
- return 0;
-}
-
-static void rf_delay_cmd_cb(void *data)
-{
- struct osmo_bsc_rf *rf = data;
-
- switch (rf->last_request) {
- case RF_CMD_D_OFF:
- rf->last_state_command = "RF Direct Off";
- osmo_timer_del(&rf->rf_check);
- osmo_timer_del(&rf->grace_timeout);
- switch_rf_off(rf);
- break;
- case RF_CMD_ON:
- rf->last_state_command = "RF Direct On";
- osmo_timer_del(&rf->grace_timeout);
- lock_each_trx(rf->gsm_network, 0);
- send_signal(rf, S_RF_ON);
- osmo_timer_schedule(&rf->rf_check, 3, 0);
- break;
- case RF_CMD_OFF:
- rf->last_state_command = "RF Scheduled Off";
- osmo_timer_del(&rf->rf_check);
- enter_grace(rf);
- break;
- }
-}
-
-static int rf_read_cmd(struct osmo_fd *fd)
-{
- struct osmo_bsc_rf_conn *conn = fd->data;
- char buf[1];
- int rc;
-
- rc = read(fd->fd, buf, sizeof(buf));
- if (rc != sizeof(buf)) {
- LOGP(DLINP, LOGL_ERROR, "Short read %d/%s\n", errno, strerror(errno));
- osmo_fd_unregister(fd);
- close(fd->fd);
- osmo_wqueue_clear(&conn->queue);
- talloc_free(conn);
- return -1;
- }
-
- switch (buf[0]) {
- case RF_CMD_QUERY:
- handle_query(conn);
- break;
- case RF_CMD_D_OFF:
- case RF_CMD_ON:
- case RF_CMD_OFF:
- conn->rf->last_request = buf[0];
- if (!osmo_timer_pending(&conn->rf->delay_cmd))
- osmo_timer_schedule(&conn->rf->delay_cmd, 1, 0);
- break;
- default:
- conn->rf->last_state_command = "Unknown command";
- LOGP(DLINP, LOGL_ERROR, "Unknown command %d\n", buf[0]);
- break;
- }
-
- return 0;
-}
-
-static int rf_write_cmd(struct osmo_fd *fd, struct msgb *msg)
-{
- int rc;
-
- rc = write(fd->fd, msg->data, msg->len);
- if (rc != msg->len) {
- LOGP(DLINP, LOGL_ERROR, "Short write %d/%s\n", errno, strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-static int rf_ctrl_accept(struct osmo_fd *bfd, unsigned int what)
-{
- struct osmo_bsc_rf_conn *conn;
- struct osmo_bsc_rf *rf = bfd->data;
- struct sockaddr_un addr;
- socklen_t len = sizeof(addr);
- int fd;
-
- fd = accept(bfd->fd, (struct sockaddr *) &addr, &len);
- if (fd < 0) {
- LOGP(DLINP, LOGL_ERROR, "Failed to accept. errno: %d/%s\n",
- errno, strerror(errno));
- return -1;
- }
-
- conn = talloc_zero(rf, struct osmo_bsc_rf_conn);
- if (!conn) {
- LOGP(DLINP, LOGL_ERROR, "Failed to allocate mem.\n");
- close(fd);
- return -1;
- }
-
- osmo_wqueue_init(&conn->queue, 10);
- conn->queue.bfd.data = conn;
- conn->queue.bfd.fd = fd;
- conn->queue.bfd.when = BSC_FD_READ | BSC_FD_WRITE;
- conn->queue.read_cb = rf_read_cmd;
- conn->queue.write_cb = rf_write_cmd;
- conn->rf = rf;
-
- if (osmo_fd_register(&conn->queue.bfd) != 0) {
- close(fd);
- talloc_free(conn);
- return -1;
- }
-
- return 0;
-}
-
-struct osmo_bsc_rf *osmo_bsc_rf_create(const char *path, struct gsm_network *net)
-{
- unsigned int namelen;
- struct sockaddr_un local;
- struct osmo_fd *bfd;
- struct osmo_bsc_rf *rf;
- int rc;
-
- rf = talloc_zero(NULL, struct osmo_bsc_rf);
- if (!rf) {
- LOGP(DLINP, LOGL_ERROR, "Failed to create osmo_bsc_rf.\n");
- return NULL;
- }
-
- bfd = &rf->listen;
- bfd->fd = socket(AF_UNIX, SOCK_STREAM, 0);
- if (bfd->fd < 0) {
- LOGP(DLINP, LOGL_ERROR, "Can not create socket. %d/%s\n",
- errno, strerror(errno));
- return NULL;
- }
-
- local.sun_family = AF_UNIX;
- strncpy(local.sun_path, path, sizeof(local.sun_path));
- local.sun_path[sizeof(local.sun_path) - 1] = '\0';
- unlink(local.sun_path);
-
- /* 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 = bind(bfd->fd, (struct sockaddr *) &local, namelen);
- if (rc != 0) {
- LOGP(DLINP, LOGL_ERROR, "Failed to bind '%s' errno: %d/%s\n",
- local.sun_path, errno, strerror(errno));
- close(bfd->fd);
- talloc_free(rf);
- return NULL;
- }
-
- if (listen(bfd->fd, 0) != 0) {
- LOGP(DLINP, LOGL_ERROR, "Failed to listen: %d/%s\n", errno, strerror(errno));
- close(bfd->fd);
- talloc_free(rf);
- return NULL;
- }
-
- bfd->when = BSC_FD_READ;
- bfd->cb = rf_ctrl_accept;
- bfd->data = rf;
-
- if (osmo_fd_register(bfd) != 0) {
- LOGP(DLINP, LOGL_ERROR, "Failed to register bfd.\n");
- close(bfd->fd);
- talloc_free(rf);
- return NULL;
- }
-
- rf->gsm_network = net;
- rf->policy = S_RF_ON;
- rf->last_state_command = "";
-
- /* check the rf state */
- rf->rf_check.data = rf;
- rf->rf_check.cb = rf_check_cb;
-
- /* delay cmd handling */
- rf->delay_cmd.data = rf;
- rf->delay_cmd.cb = rf_delay_cmd_cb;
-
- return rf;
-}
-