aboutsummaryrefslogtreecommitdiffstats
path: root/openbsc/src/libabis/input
diff options
context:
space:
mode:
Diffstat (limited to 'openbsc/src/libabis/input')
-rw-r--r--openbsc/src/libabis/input/dahdi.c527
-rw-r--r--openbsc/src/libabis/input/hsl.c458
-rw-r--r--openbsc/src/libabis/input/ipaccess.c842
-rw-r--r--openbsc/src/libabis/input/lapd.c730
-rw-r--r--openbsc/src/libabis/input/lapd.h58
-rw-r--r--openbsc/src/libabis/input/misdn.c541
6 files changed, 0 insertions, 3156 deletions
diff --git a/openbsc/src/libabis/input/dahdi.c b/openbsc/src/libabis/input/dahdi.c
deleted file mode 100644
index 6802a1e8..00000000
--- a/openbsc/src/libabis/input/dahdi.c
+++ /dev/null
@@ -1,527 +0,0 @@
-/* OpenBSC Abis input driver for DAHDI */
-
-/* (C) 2008-2011 by Harald Welte <laforge@gnumonks.org>
- * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
- * (C) 2010 by Digium and Matthew Fredrickson <creslin@digium.com>
- *
- * All Rights Reserved
- *
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#include "../../../bscconfig.h"
-
-#ifdef HAVE_DAHDI_USER_H
-
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <time.h>
-#include <sys/fcntl.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <arpa/inet.h>
-#include <dahdi/user.h>
-
-#include <osmocom/core/select.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/rate_ctr.h>
-
-#include <openbsc/debug.h>
-#include <openbsc/gsm_data.h>
-#include <openbsc/abis_nm.h>
-#include <openbsc/abis_rsl.h>
-#include <openbsc/subchan_demux.h>
-#include <openbsc/e1_input.h>
-#include <openbsc/signal.h>
-#include <osmocom/core/talloc.h>
-
-#include "lapd.h"
-
-#define TS1_ALLOC_SIZE 300
-
-/* Corresponds to dahdi/user.h, only PRI related events */
-static const struct value_string dahdi_evt_names[] = {
- { DAHDI_EVENT_NONE, "NONE" },
- { DAHDI_EVENT_ALARM, "ALARM" },
- { DAHDI_EVENT_NOALARM, "NOALARM" },
- { DAHDI_EVENT_ABORT, "HDLC ABORT" },
- { DAHDI_EVENT_OVERRUN, "HDLC OVERRUN" },
- { DAHDI_EVENT_BADFCS, "HDLC BAD FCS" },
- { DAHDI_EVENT_REMOVED, "REMOVED" },
- { 0, NULL }
-};
-
-static void handle_dahdi_exception(struct e1inp_ts *ts)
-{
- int rc, evt;
- struct e1inp_line *line = ts->line;
- struct input_signal_data isd;
-
- rc = ioctl(ts->driver.dahdi.fd.fd, DAHDI_GETEVENT, &evt);
- if (rc < 0)
- return;
-
- LOGP(DMI, LOGL_NOTICE, "Line %u(%s) / TS %u DAHDI EVENT %s\n",
- ts->line->num, ts->line->name, ts->num,
- get_value_string(dahdi_evt_names, evt));
-
- isd.line = ts->line;
-
- switch (evt) {
- case DAHDI_EVENT_ALARM:
- /* we should notify the code that the line is gone */
- osmo_signal_dispatch(SS_INPUT, S_INP_LINE_ALARM, &isd);
- rate_ctr_inc(&line->rate_ctr->ctr[E1I_CTR_ALARM]);
- break;
- case DAHDI_EVENT_NOALARM:
- /* alarm has gone, we should re-start the SABM requests */
- osmo_signal_dispatch(SS_INPUT, S_INP_LINE_NOALARM, &isd);
- break;
- case DAHDI_EVENT_ABORT:
- rate_ctr_inc(&line->rate_ctr->ctr[E1I_CTR_HDLC_ABORT]);
- break;
- case DAHDI_EVENT_OVERRUN:
- rate_ctr_inc(&line->rate_ctr->ctr[E1I_CTR_HDLC_OVERR]);
- break;
- case DAHDI_EVENT_BADFCS:
- rate_ctr_inc(&line->rate_ctr->ctr[E1I_CTR_HDLC_BADFCS]);
- break;
- case DAHDI_EVENT_REMOVED:
- rate_ctr_inc(&line->rate_ctr->ctr[E1I_CTR_REMOVED]);
- break;
- }
-}
-
-static int handle_ts1_read(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "DAHDI TS1");
- lapd_mph_type prim;
- unsigned int sapi, tei;
- int ilen, ret, error = 0;
- uint8_t *idata;
-
- if (!msg)
- return -ENOMEM;
-
- ret = read(bfd->fd, msg->data, TS1_ALLOC_SIZE - 16);
- if (ret == -1)
- handle_dahdi_exception(e1i_ts);
- else if (ret < 0) {
- perror("read ");
- }
- msgb_put(msg, ret - 2);
- if (ret <= 3) {
- perror("read ");
- }
-
- sapi = msg->data[0] >> 2;
- tei = msg->data[1] >> 1;
-
- DEBUGP(DMI, "<= len = %d, sapi(%d) tei(%d)", ret, sapi, tei);
-
- idata = lapd_receive(e1i_ts->driver.dahdi.lapd, msg->data, msg->len, &ilen, &prim, &error);
- if (!idata) {
- switch(error) {
- case LAPD_ERR_UNKNOWN_TEI:
- /* We don't know about this TEI, probably the BSC
- * lost local states (it crashed or it was stopped),
- * notify the driver to see if it can do anything to
- * recover the existing signalling links with the BTS.
- */
- e1inp_event(e1i_ts, S_INP_TEI_UNKNOWN, tei, sapi);
- return -EIO;
- }
- if (prim == 0)
- return -EIO;
- }
-
- msgb_pull(msg, 2);
-
- DEBUGP(DMI, "prim %08x\n", prim);
-
- switch (prim) {
- case 0:
- break;
- case LAPD_MPH_ACTIVATE_IND:
- DEBUGP(DMI, "MPH_ACTIVATE_IND: sapi(%d) tei(%d)\n", sapi, tei);
- ret = e1inp_event(e1i_ts, S_INP_TEI_UP, tei, sapi);
- break;
- case LAPD_MPH_DEACTIVATE_IND:
- DEBUGP(DMI, "MPH_DEACTIVATE_IND: sapi(%d) tei(%d)\n", sapi, tei);
- ret = e1inp_event(e1i_ts, S_INP_TEI_DN, tei, sapi);
- break;
- case LAPD_DL_DATA_IND:
- case LAPD_DL_UNITDATA_IND:
- if (prim == LAPD_DL_DATA_IND)
- msg->l2h = msg->data + 2;
- else
- msg->l2h = msg->data + 1;
- DEBUGP(DMI, "RX: %s\n", osmo_hexdump(msgb_l2(msg), ret));
- ret = e1inp_rx_ts(e1i_ts, msg, tei, sapi);
- break;
- default:
- printf("ERROR: unknown prim\n");
- break;
- }
-
- DEBUGP(DMI, "Returned ok\n");
- return ret;
-}
-
-static int ts_want_write(struct e1inp_ts *e1i_ts)
-{
- /* We never include the DAHDI B-Channel FD into the
- * writeset, since it doesn't support poll() based
- * write flow control */
- if (e1i_ts->type == E1INP_TS_TYPE_TRAU) {
- fprintf(stderr, "Trying to write TRAU ts\n");
- return 0;
- }
-
- e1i_ts->driver.dahdi.fd.when |= BSC_FD_WRITE;
-
- return 0;
-}
-
-static void timeout_ts1_write(void *data)
-{
- struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data;
-
- /* trigger write of ts1, due to tx delay timer */
- ts_want_write(e1i_ts);
-}
-
-static void dahdi_write_msg(uint8_t *data, int len, void *cbdata)
-{
- struct osmo_fd *bfd = cbdata;
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- int ret;
-
- ret = write(bfd->fd, data, len + 2);
- if (ret == -1)
- handle_dahdi_exception(e1i_ts);
- else if (ret < 0)
- LOGP(DMI, LOGL_NOTICE, "%s write failed %d\n", __func__, ret);
-}
-
-static int handle_ts1_write(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct e1inp_sign_link *sign_link;
- struct msgb *msg;
-
- bfd->when &= ~BSC_FD_WRITE;
-
- /* get the next msg for this timeslot */
- msg = e1inp_tx_ts(e1i_ts, &sign_link);
- if (!msg) {
- /* no message after tx delay timer */
- return 0;
- }
-
- DEBUGP(DMI, "TX: %s\n", osmo_hexdump(msg->data, msg->len));
- lapd_transmit(e1i_ts->driver.dahdi.lapd, sign_link->tei,
- sign_link->sapi, msg->data, msg->len);
- msgb_free(msg);
-
- /* set tx delay timer for next event */
- e1i_ts->sign.tx_timer.cb = timeout_ts1_write;
- e1i_ts->sign.tx_timer.data = e1i_ts;
- osmo_timer_schedule(&e1i_ts->sign.tx_timer, 0, 50000);
-
- return 0;
-}
-
-
-static int invertbits = 1;
-
-static uint8_t flip_table[256];
-
-static void init_flip_bits(void)
-{
- int i,k;
-
- for (i = 0 ; i < 256 ; i++) {
- uint8_t sample = 0 ;
- for (k = 0; k<8; k++) {
- if ( i & 1 << k ) sample |= 0x80 >> k;
- }
- flip_table[i] = sample;
- }
-}
-
-static uint8_t * flip_buf_bits ( uint8_t * buf , int len)
-{
- int i;
- uint8_t * start = buf;
-
- for (i = 0 ; i < len; i++) {
- buf[i] = flip_table[(uint8_t)buf[i]];
- }
-
- return start;
-}
-
-#define D_BCHAN_TX_GRAN 160
-/* write to a B channel TS */
-static int handle_tsX_write(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- uint8_t tx_buf[D_BCHAN_TX_GRAN];
- struct subch_mux *mx = &e1i_ts->trau.mux;
- int ret;
-
- ret = subchan_mux_out(mx, tx_buf, D_BCHAN_TX_GRAN);
-
- if (ret != D_BCHAN_TX_GRAN) {
- fprintf(stderr, "Huh, got ret of %d\n", ret);
- if (ret < 0)
- return ret;
- }
-
- DEBUGP(DMIB, "BCHAN TX: %s\n",
- osmo_hexdump(tx_buf, D_BCHAN_TX_GRAN));
-
- if (invertbits) {
- flip_buf_bits(tx_buf, ret);
- }
-
- ret = write(bfd->fd, tx_buf, ret);
- if (ret < D_BCHAN_TX_GRAN)
- fprintf(stderr, "send returns %d instead of %d\n", ret,
- D_BCHAN_TX_GRAN);
-
- return ret;
-}
-
-#define D_TSX_ALLOC_SIZE (D_BCHAN_TX_GRAN)
-/* FIXME: read from a B channel TS */
-static int handle_tsX_read(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct msgb *msg = msgb_alloc(D_TSX_ALLOC_SIZE, "DAHDI TSx");
- int ret;
-
- if (!msg)
- return -ENOMEM;
-
- ret = read(bfd->fd, msg->data, D_TSX_ALLOC_SIZE);
- if (ret < 0 || ret != D_TSX_ALLOC_SIZE) {
- fprintf(stderr, "read error %d %s\n", ret, strerror(errno));
- return ret;
- }
-
- if (invertbits) {
- flip_buf_bits(msg->data, ret);
- }
-
- msgb_put(msg, ret);
-
- msg->l2h = msg->data;
- DEBUGP(DMIB, "BCHAN RX: %s\n",
- osmo_hexdump(msgb_l2(msg), ret));
- ret = e1inp_rx_ts(e1i_ts, msg, 0, 0);
- /* physical layer indicates that data has been sent,
- * we thus can send some more data */
- ret = handle_tsX_write(bfd);
- msgb_free(msg);
-
- return ret;
-}
-
-/* callback from select.c in case one of the fd's can be read/written */
-static int dahdi_fd_cb(struct osmo_fd *bfd, unsigned int what)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- unsigned int idx = ts_nr-1;
- struct e1inp_ts *e1i_ts = &line->ts[idx];
- int rc = 0;
-
- switch (e1i_ts->type) {
- case E1INP_TS_TYPE_SIGN:
- if (what & BSC_FD_EXCEPT)
- handle_dahdi_exception(e1i_ts);
- if (what & BSC_FD_READ)
- rc = handle_ts1_read(bfd);
- if (what & BSC_FD_WRITE)
- rc = handle_ts1_write(bfd);
- break;
- case E1INP_TS_TYPE_TRAU:
- if (what & BSC_FD_EXCEPT)
- handle_dahdi_exception(e1i_ts);
- if (what & BSC_FD_READ)
- rc = handle_tsX_read(bfd);
- if (what & BSC_FD_WRITE)
- rc = handle_tsX_write(bfd);
- /* We never include the DAHDI B-Channel FD into the
- * writeset, since it doesn't support poll() based
- * write flow control */
- break;
- default:
- fprintf(stderr, "unknown E1 TS type %u\n", e1i_ts->type);
- break;
- }
-
- return rc;
-}
-
-static int dahdi_e1_line_update(struct e1inp_line *line);
-
-struct e1inp_driver dahdi_driver = {
- .name = "dahdi",
- .want_write = ts_want_write,
- .line_update = &dahdi_e1_line_update,
-};
-
-void dahdi_set_bufinfo(int fd, int as_sigchan)
-{
- struct dahdi_bufferinfo bi;
- int x = 0;
-
- if (ioctl(fd, DAHDI_GET_BUFINFO, &bi)) {
- fprintf(stderr, "Error getting bufinfo\n");
- exit(-1);
- }
-
- if (as_sigchan) {
- bi.numbufs = 4;
- bi.bufsize = 512;
- } else {
- bi.numbufs = 8;
- bi.bufsize = D_BCHAN_TX_GRAN;
- bi.txbufpolicy = DAHDI_POLICY_WHEN_FULL;
- }
-
- if (ioctl(fd, DAHDI_SET_BUFINFO, &bi)) {
- fprintf(stderr, "Error setting bufinfo\n");
- exit(-1);
- }
-
- if (!as_sigchan) {
- if (ioctl(fd, DAHDI_AUDIOMODE, &x)) {
- fprintf(stderr, "Error setting bufinfo\n");
- exit(-1);
- }
- } else {
- int one = 1;
- ioctl(fd, DAHDI_HDLCFCSMODE, &one);
- /* we cannot reliably check for the ioctl return value here
- * as this command will fail if the slot _already_ was a
- * signalling slot before :( */
- }
-}
-
-static int dahdi_e1_setup(struct e1inp_line *line)
-{
- int ts, ret;
-
- /* TS0 is CRC4, don't need any fd for it */
- for (ts = 1; ts < NUM_E1_TS; ts++) {
- unsigned int idx = ts-1;
- char openstr[128];
- struct e1inp_ts *e1i_ts = &line->ts[idx];
- struct osmo_fd *bfd = &e1i_ts->driver.dahdi.fd;
- int dev_nr;
-
- /* DAHDI device names/numbers just keep incrementing
- * even over multiple boards. So TS1 of the second
- * board will be 32 */
- dev_nr = line->num * (NUM_E1_TS-1) + ts;
-
- bfd->data = line;
- bfd->priv_nr = ts;
- bfd->cb = dahdi_fd_cb;
- snprintf(openstr, sizeof(openstr), "/dev/dahdi/%d", dev_nr);
-
- switch (e1i_ts->type) {
- case E1INP_TS_TYPE_NONE:
- continue;
- break;
- case E1INP_TS_TYPE_SIGN:
- bfd->fd = open(openstr, O_RDWR | O_NONBLOCK);
- if (bfd->fd == -1) {
- fprintf(stderr, "%s could not open %s %s\n",
- __func__, openstr, strerror(errno));
- exit(-1);
- }
- bfd->when = BSC_FD_READ | BSC_FD_EXCEPT;
- dahdi_set_bufinfo(bfd->fd, 1);
- e1i_ts->driver.dahdi.lapd = lapd_instance_alloc(1, dahdi_write_msg, bfd);
- break;
- case E1INP_TS_TYPE_TRAU:
- bfd->fd = open(openstr, O_RDWR | O_NONBLOCK);
- if (bfd->fd == -1) {
- fprintf(stderr, "%s could not open %s %s\n",
- __func__, openstr, strerror(errno));
- exit(-1);
- }
- dahdi_set_bufinfo(bfd->fd, 0);
- /* We never include the DAHDI B-Channel FD into the
- * writeset, since it doesn't support poll() based
- * write flow control */
- bfd->when = BSC_FD_READ | BSC_FD_EXCEPT;// | BSC_FD_WRITE;
- break;
- }
-
- if (bfd->fd < 0) {
- fprintf(stderr, "%s could not open %s %s\n",
- __func__, openstr, strerror(errno));
- return bfd->fd;
- }
-
- ret = osmo_fd_register(bfd);
- if (ret < 0) {
- fprintf(stderr, "could not register FD: %s\n",
- strerror(ret));
- return ret;
- }
- }
-
- return 0;
-}
-
-static int dahdi_e1_line_update(struct e1inp_line *line)
-{
- if (line->driver != &dahdi_driver)
- return -EINVAL;
-
- return dahdi_e1_setup(line);
-}
-
-int e1inp_dahdi_init(void)
-{
- init_flip_bits();
-
- /* register the driver with the core */
- return e1inp_driver_register(&dahdi_driver);
-}
-
-#endif /* HAVE_DAHDI_USER_H */
diff --git a/openbsc/src/libabis/input/hsl.c b/openbsc/src/libabis/input/hsl.c
deleted file mode 100644
index 7f2e75d6..00000000
--- a/openbsc/src/libabis/input/hsl.c
+++ /dev/null
@@ -1,458 +0,0 @@
-/* OpenBSC Abis input driver for HSL Femto */
-
-/* (C) 2011 by Harald Welte <laforge@gnumonks.org>
- * (C) 2011 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/>.
- *
- */
-
-/* HSL uses a much more primitive/simplified version of the IPA multiplex.
- *
- * They have taken out the nice parts like the ID_GET / ID_RESP for resolving
- * the UNIT ID, as well as the keepalive ping/pong messages. Furthermore, the
- * Stream Identifiers are fixed on the BTS side (RSL always 0, OML always 0xff)
- * and both OML+RSL share a single TCP connection.
- *
- * Other oddities include the encapsulation of BSSGP messages in the L3_INFO IE
- * of RSL
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <time.h>
-#include <sys/fcntl.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <arpa/inet.h>
-
-#include <osmocom/core/select.h>
-#include <osmocom/gsm/tlv.h>
-#include <osmocom/core/msgb.h>
-#include <openbsc/debug.h>
-#include <openbsc/gsm_data.h>
-#include <openbsc/abis_nm.h>
-#include <openbsc/abis_rsl.h>
-#include <openbsc/subchan_demux.h>
-#include <openbsc/e1_input.h>
-#include <openbsc/ipaccess.h>
-#include <openbsc/socket.h>
-#include <openbsc/signal.h>
-#include <osmocom/core/talloc.h>
-
-#define HSL_TCP_PORT 2500
-#define HSL_PROTO_DEBUG 0xdd
-
-#define PRIV_OML 1
-#define PRIV_RSL 2
-
-/* data structure for one E1 interface with A-bis */
-struct hsl_e1_handle {
- struct osmo_fd listen_fd;
- struct gsm_network *gsmnet;
-};
-
-static struct hsl_e1_handle *e1h;
-
-
-#define TS1_ALLOC_SIZE 900
-
-#define OML_UP 0x0001
-#define RSL_UP 0x0002
-
-int hsl_drop_oml(struct gsm_bts *bts)
-{
- struct gsm_bts_trx *trx;
- struct e1inp_ts *ts;
- struct e1inp_line *line;
- struct osmo_fd *bfd;
-
- if (!bts || !bts->oml_link)
- return -1;
-
- /* send OML down */
- ts = bts->oml_link->ts;
- line = ts->line;
- e1inp_event(ts, S_INP_TEI_DN, bts->oml_link->tei, bts->oml_link->sapi);
-
- bfd = &ts->driver.ipaccess.fd;
- osmo_fd_unregister(bfd);
- close(bfd->fd);
- bfd->fd = -1;
-
- /* clean up OML and RSL */
- e1inp_sign_link_destroy(bts->oml_link);
- bts->oml_link = NULL;
- e1inp_sign_link_destroy(bts->c0->rsl_link);
- bts->c0->rsl_link = NULL;
- bts->ip_access.flags = 0;
-
- /* kill the E1 line now... as we have no one left to use it */
- talloc_free(line);
-
- return -1;
-}
-
-static int hsl_drop_ts_fd(struct e1inp_ts *ts, struct osmo_fd *bfd)
-{
- struct e1inp_sign_link *link, *link2;
- int bts_nr = -1;
-
- llist_for_each_entry_safe(link, link2, &ts->sign.sign_links, list) {
- bts_nr = link->trx->bts->bts_nr;
- e1inp_sign_link_destroy(link);
- }
-
- osmo_fd_unregister(bfd);
- close(bfd->fd);
- bfd->fd = -1;
-
- talloc_free(ts->line);
-
- return bts_nr;
-}
-
-struct gsm_bts *find_bts_by_serno(struct gsm_network *net, unsigned long serno)
-{
- struct gsm_bts *bts;
-
- llist_for_each_entry(bts, &net->bts_list, list) {
- if (bts->type != GSM_BTS_TYPE_HSL_FEMTO)
- continue;
-
- if (serno == bts->hsl.serno)
- return bts;
- }
-
- return NULL;
-}
-
-
-static int process_hsl_rsl(struct msgb *msg, struct e1inp_line *line)
-{
- char serno_buf[16];
- uint8_t serno_len;
- unsigned long serno;
- struct gsm_bts *bts;
-
- switch (msg->l2h[1]) {
- case 0x80:
- /*, contains Serial Number + SW version */
- if (msg->l2h[2] != 0xc0)
- break;
- serno_len = msg->l2h[3];
- if (serno_len > sizeof(serno_buf)-1)
- serno_len = sizeof(serno_buf)-1;
- memcpy(serno_buf, msg->l2h+4, serno_len);
- serno_buf[serno_len] = '\0';
- serno = strtoul(serno_buf, NULL, 10);
- bts = find_bts_by_serno(e1h->gsmnet, serno);
- if (!bts) {
- LOGP(DINP, LOGL_ERROR, "Unable to find BTS config for "
- "serial number %lu(%s)\n", serno, serno_buf);
- return -EIO;
- }
-
- DEBUGP(DINP, "Identified HSL BTS Serial Number %lu\n", serno);
-
- /* we shouldn't hardcode it, but HSL femto also hardcodes it... */
- bts->oml_tei = 255;
- bts->c0->rsl_tei = 0;
- bts->oml_link = e1inp_sign_link_create(&line->ts[PRIV_OML - 1],
- E1INP_SIGN_OML, bts->c0,
- bts->oml_tei, 0);
- bts->c0->rsl_link = e1inp_sign_link_create(&line->ts[PRIV_OML - 1],
- E1INP_SIGN_RSL, bts->c0,
- bts->c0->rsl_tei, 0);
- e1inp_event(&line->ts[PRIV_OML-1], S_INP_TEI_UP, 255, 0);
- e1inp_event(&line->ts[PRIV_OML-1], S_INP_TEI_UP, 0, 0);
- bts->ip_access.flags |= OML_UP;
- bts->ip_access.flags |= (RSL_UP << 0);
- msgb_free(msg);
- return 1; /* == we have taken over the msg */
- case 0x82:
- /* FIXME: do something with BSSGP, i.e. forward it over
- * NSIP to OsmoSGSN */
- msgb_free(msg);
- return 1;
- }
- return 0;
-}
-
-static int handle_ts1_read(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct e1inp_sign_link *link;
- struct msgb *msg;
- struct ipaccess_head *hh;
- int ret = 0, error;
-
- msg = ipaccess_read_msg(bfd, &error);
- if (!msg) {
- if (error == 0) {
- int ret = hsl_drop_ts_fd(e1i_ts, bfd);
- if (ret >= 0)
- LOGP(DINP, LOGL_NOTICE, "BTS %u disappeared, dead socket\n",
- ret);
- else
- LOGP(DINP, LOGL_NOTICE, "unknown BTS disappeared, dead socket\n");
- }
- return error;
- }
-
- DEBUGP(DMI, "RX %u: %s\n", ts_nr, osmo_hexdump(msgb_l2(msg), msgb_l2len(msg)));
-
- hh = (struct ipaccess_head *) msg->data;
- if (hh->proto == HSL_PROTO_DEBUG) {
- LOGP(DINP, LOGL_NOTICE, "HSL debug: %s\n", msg->data + sizeof(*hh));
- msgb_free(msg);
- return ret;
- }
-
- /* HSL proprietary RSL extension */
- if (hh->proto == 0 && (msg->l2h[0] == 0x81 || msg->l2h[0] == 0x80)) {
- ret = process_hsl_rsl(msg, line);
- if (ret < 0) {
- /* FIXME: close connection */
- hsl_drop_ts_fd(e1i_ts, bfd);
- return ret;
- } else if (ret == 1)
- return 0;
- /* else: continue... */
- }
-#ifdef HSL_SR_1_0
- /* HSL for whatever reason chose to use 0x81 instead of 0x80 for FOM */
- if (hh->proto == 255 && msg->l2h[0] == (ABIS_OM_MDISC_FOM | 0x01))
- msg->l2h[0] = ABIS_OM_MDISC_FOM;
-#endif
- link = e1inp_lookup_sign_link(e1i_ts, hh->proto, 0);
- if (!link) {
- LOGP(DINP, LOGL_ERROR, "no matching signalling link for "
- "hh->proto=0x%02x\n", hh->proto);
- msgb_free(msg);
- return -EIO;
- }
- msg->dst = link;
-
- switch (link->type) {
- case E1INP_SIGN_RSL:
- if (!(link->trx->bts->ip_access.flags & (RSL_UP << link->trx->nr))) {
- e1inp_event(e1i_ts, S_INP_TEI_UP, link->tei, link->sapi);
- link->trx->bts->ip_access.flags |= (RSL_UP << link->trx->nr);
- }
- ret = abis_rsl_rcvmsg(msg);
- break;
- case E1INP_SIGN_OML:
- if (!(link->trx->bts->ip_access.flags & OML_UP)) {
- e1inp_event(e1i_ts, S_INP_TEI_UP, link->tei, link->sapi);
- link->trx->bts->ip_access.flags |= OML_UP;
- }
- ret = abis_nm_rcvmsg(msg);
- break;
- default:
- LOGP(DINP, LOGL_NOTICE, "Unknown HSL protocol class 0x%02x\n", hh->proto);
- msgb_free(msg);
- break;
- }
- return ret;
-}
-
-static int ts_want_write(struct e1inp_ts *e1i_ts)
-{
- e1i_ts->driver.ipaccess.fd.when |= BSC_FD_WRITE;
-
- return 0;
-}
-
-static void timeout_ts1_write(void *data)
-{
- struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data;
-
- /* trigger write of ts1, due to tx delay timer */
- ts_want_write(e1i_ts);
-}
-
-static int handle_ts1_write(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct e1inp_sign_link *sign_link;
- struct msgb *msg;
- uint8_t proto;
- int ret;
-
- bfd->when &= ~BSC_FD_WRITE;
-
- /* get the next msg for this timeslot */
- msg = e1inp_tx_ts(e1i_ts, &sign_link);
- if (!msg) {
- /* no message after tx delay timer */
- return 0;
- }
-
- switch (sign_link->type) {
- case E1INP_SIGN_OML:
- proto = IPAC_PROTO_OML;
-#ifdef HSL_SR_1_0
- /* HSL uses 0x81 for FOM for some reason */
- if (msg->data[0] == ABIS_OM_MDISC_FOM)
- msg->data[0] = ABIS_OM_MDISC_FOM | 0x01;
-#endif
- break;
- case E1INP_SIGN_RSL:
- proto = IPAC_PROTO_RSL;
- break;
- default:
- msgb_free(msg);
- bfd->when |= BSC_FD_WRITE; /* come back for more msg */
- return -EINVAL;
- }
-
- msg->l2h = msg->data;
- ipaccess_prepend_header(msg, sign_link->tei);
-
- DEBUGP(DMI, "TX %u: %s\n", ts_nr, osmo_hexdump(msg->l2h, msgb_l2len(msg)));
-
- ret = send(bfd->fd, msg->data, msg->len, 0);
- msgb_free(msg);
-
- /* set tx delay timer for next event */
- e1i_ts->sign.tx_timer.cb = timeout_ts1_write;
- e1i_ts->sign.tx_timer.data = e1i_ts;
-
- /* Reducing this might break the nanoBTS 900 init. */
- osmo_timer_schedule(&e1i_ts->sign.tx_timer, 0, e1i_ts->sign.delay);
-
- return ret;
-}
-
-/* callback from select.c in case one of the fd's can be read/written */
-static int hsl_fd_cb(struct osmo_fd *bfd, unsigned int what)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- unsigned int idx = ts_nr-1;
- struct e1inp_ts *e1i_ts;
- int rc = 0;
-
- /* In case of early RSL we might not yet have a line */
-
- if (line)
- e1i_ts = &line->ts[idx];
-
- if (!line || e1i_ts->type == E1INP_TS_TYPE_SIGN) {
- if (what & BSC_FD_READ)
- rc = handle_ts1_read(bfd);
- if (what & BSC_FD_WRITE)
- rc = handle_ts1_write(bfd);
- } else
- LOGP(DINP, LOGL_ERROR, "unknown E1 TS type %u\n", e1i_ts->type);
-
- return rc;
-}
-
-struct e1inp_driver hsl_driver = {
- .name = "HSL",
- .want_write = ts_want_write,
- .default_delay = 0,
-};
-
-/* callback of the OML listening filedescriptor */
-static int listen_fd_cb(struct osmo_fd *listen_bfd, unsigned int what)
-{
- int ret;
- int idx = 0;
- int i;
- struct e1inp_line *line;
- struct e1inp_ts *e1i_ts;
- struct osmo_fd *bfd;
- struct sockaddr_in sa;
- socklen_t sa_len = sizeof(sa);
-
- if (!(what & BSC_FD_READ))
- return 0;
-
- ret = accept(listen_bfd->fd, (struct sockaddr *) &sa, &sa_len);
- if (ret < 0) {
- perror("accept");
- return ret;
- }
- LOGP(DINP, LOGL_NOTICE, "accept()ed new HSL link from %s\n",
- inet_ntoa(sa.sin_addr));
-
- line = talloc_zero(tall_bsc_ctx, struct e1inp_line);
- if (!line) {
- close(ret);
- return -ENOMEM;
- }
- line->driver = &hsl_driver;
- //line->driver_data = e1h;
- /* create virrtual E1 timeslots for signalling */
- e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN);
-
- /* initialize the fds */
- for (i = 0; i < ARRAY_SIZE(line->ts); ++i)
- line->ts[i].driver.ipaccess.fd.fd = -1;
-
- e1i_ts = &line->ts[idx];
-
- bfd = &e1i_ts->driver.ipaccess.fd;
- bfd->fd = ret;
- bfd->data = line;
- bfd->priv_nr = PRIV_OML;
- bfd->cb = hsl_fd_cb;
- bfd->when = BSC_FD_READ;
- ret = osmo_fd_register(bfd);
- if (ret < 0) {
- LOGP(DINP, LOGL_ERROR, "could not register FD\n");
- close(bfd->fd);
- talloc_free(line);
- return ret;
- }
-
- return ret;
- //return e1inp_line_register(line);
-}
-
-int hsl_setup(struct gsm_network *gsmnet)
-{
- int ret;
-
- e1h = talloc_zero(tall_bsc_ctx, struct hsl_e1_handle);
- if (!e1h)
- return -ENOMEM;
-
- e1h->gsmnet = gsmnet;
-
- /* Listen for connections */
- ret = make_sock(&e1h->listen_fd, IPPROTO_TCP, INADDR_ANY, HSL_TCP_PORT,
- 0, listen_fd_cb, NULL);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-void e1inp_hsl_init(void)
-{
- e1inp_driver_register(&hsl_driver);
-}
diff --git a/openbsc/src/libabis/input/ipaccess.c b/openbsc/src/libabis/input/ipaccess.c
deleted file mode 100644
index 2d6764e2..00000000
--- a/openbsc/src/libabis/input/ipaccess.c
+++ /dev/null
@@ -1,842 +0,0 @@
-/* OpenBSC Abis input driver for ip.access */
-
-/* (C) 2009 by Harald Welte <laforge@gnumonks.org>
- * (C) 2010 by Holger Hans Peter Freyther
- * (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 <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <time.h>
-#include <sys/fcntl.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <arpa/inet.h>
-
-#include <osmocom/core/select.h>
-#include <osmocom/gsm/tlv.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/talloc.h>
-#include <openbsc/debug.h>
-#include <openbsc/gsm_data.h>
-#include <openbsc/abis_nm.h>
-#include <openbsc/abis_rsl.h>
-#include <openbsc/subchan_demux.h>
-#include <openbsc/e1_input.h>
-#include <openbsc/ipaccess.h>
-#include <openbsc/socket.h>
-#include <openbsc/signal.h>
-
-#define PRIV_OML 1
-#define PRIV_RSL 2
-
-/* data structure for one E1 interface with A-bis */
-struct ia_e1_handle {
- struct osmo_fd listen_fd;
- struct osmo_fd rsl_listen_fd;
- struct gsm_network *gsmnet;
-};
-
-static struct ia_e1_handle *e1h;
-
-
-#define TS1_ALLOC_SIZE 900
-
-/*
- * Common propietary IPA messages:
- * - PONG: in reply to PING.
- * - ID_REQUEST: first messages once OML has been established.
- * - ID_ACK: in reply to ID_ACK.
- */
-const uint8_t ipa_pong_msg[] = {
- 0, 1, IPAC_PROTO_IPACCESS, IPAC_MSGT_PONG
-};
-
-const uint8_t ipa_id_ack_msg[] = {
- 0, 1, IPAC_PROTO_IPACCESS, IPAC_MSGT_ID_ACK
-};
-
-const uint8_t ipa_id_req_msg[] = {
- 0, 17, IPAC_PROTO_IPACCESS, IPAC_MSGT_ID_GET,
- 0x01, IPAC_IDTAG_UNIT,
- 0x01, IPAC_IDTAG_MACADDR,
- 0x01, IPAC_IDTAG_LOCATION1,
- 0x01, IPAC_IDTAG_LOCATION2,
- 0x01, IPAC_IDTAG_EQUIPVERS,
- 0x01, IPAC_IDTAG_SWVERSION,
- 0x01, IPAC_IDTAG_UNITNAME,
- 0x01, IPAC_IDTAG_SERNR,
-};
-
-static const char *idtag_names[] = {
- [IPAC_IDTAG_SERNR] = "Serial_Number",
- [IPAC_IDTAG_UNITNAME] = "Unit_Name",
- [IPAC_IDTAG_LOCATION1] = "Location_1",
- [IPAC_IDTAG_LOCATION2] = "Location_2",
- [IPAC_IDTAG_EQUIPVERS] = "Equipment_Version",
- [IPAC_IDTAG_SWVERSION] = "Software_Version",
- [IPAC_IDTAG_IPADDR] = "IP_Address",
- [IPAC_IDTAG_MACADDR] = "MAC_Address",
- [IPAC_IDTAG_UNIT] = "Unit_ID",
-};
-
-const char *ipaccess_idtag_name(uint8_t tag)
-{
- if (tag >= ARRAY_SIZE(idtag_names))
- return "unknown";
-
- return idtag_names[tag];
-}
-
-int ipaccess_idtag_parse(struct tlv_parsed *dec, unsigned char *buf, int len)
-{
- uint8_t t_len;
- uint8_t t_tag;
- uint8_t *cur = buf;
-
- memset(dec, 0, sizeof(*dec));
-
- while (len >= 2) {
- len -= 2;
- t_len = *cur++;
- t_tag = *cur++;
-
- if (t_len > len + 1) {
- LOGP(DMI, LOGL_ERROR, "The tag does not fit: %d\n", t_len);
- return -EINVAL;
- }
-
- DEBUGPC(DMI, "%s='%s' ", ipaccess_idtag_name(t_tag), cur);
-
- dec->lv[t_tag].len = t_len;
- dec->lv[t_tag].val = cur;
-
- cur += t_len;
- len -= t_len;
- }
- return 0;
-}
-
-struct gsm_bts *find_bts_by_unitid(struct gsm_network *net,
- uint16_t site_id, uint16_t bts_id)
-{
- struct gsm_bts *bts;
-
- llist_for_each_entry(bts, &net->bts_list, list) {
-
- if (!is_ipaccess_bts(bts))
- continue;
-
- if (bts->ip_access.site_id == site_id &&
- bts->ip_access.bts_id == bts_id)
- return bts;
- }
-
- return NULL;
-}
-
-int ipaccess_parse_unitid(const char *str, uint16_t *site_id,
- uint16_t *bts_id, uint16_t *trx_id)
-{
- unsigned long ul;
- char *endptr;
- const char *nptr;
-
- nptr = str;
- ul = strtoul(nptr, &endptr, 10);
- if (endptr <= nptr)
- return -EINVAL;
- if (site_id)
- *site_id = ul & 0xffff;
-
- if (*endptr++ != '/')
- return -EINVAL;
-
- nptr = endptr;
- ul = strtoul(nptr, &endptr, 10);
- if (endptr <= nptr)
- return -EINVAL;
- if (bts_id)
- *bts_id = ul & 0xffff;
-
- if (*endptr++ != '/')
- return -EINVAL;
-
- nptr = endptr;
- ul = strtoul(nptr, &endptr, 10);
- if (endptr <= nptr)
- return -EINVAL;
- if (trx_id)
- *trx_id = ul & 0xffff;
-
- return 0;
-}
-
-static int ipaccess_send(int fd, const void *msg, size_t msglen)
-{
- int ret;
-
- ret = write(fd, msg, msglen);
- if (ret < 0)
- return ret;
- if (ret < msglen) {
- LOGP(DINP, LOGL_ERROR, "ipaccess_send: short write\n");
- return -EIO;
- }
- return ret;
-}
-
-int ipaccess_send_pong(int fd)
-{
- return ipaccess_send(fd, ipa_pong_msg, sizeof(ipa_pong_msg));
-}
-
-int ipaccess_send_id_ack(int fd)
-{
- return ipaccess_send(fd, ipa_id_ack_msg, sizeof(ipa_id_ack_msg));
-}
-
-int ipaccess_send_id_req(int fd)
-{
- return ipaccess_send(fd, ipa_id_req_msg, sizeof(ipa_id_req_msg));
-}
-
-/* base handling of the ip.access protocol */
-int ipaccess_rcvmsg_base(struct msgb *msg,
- struct osmo_fd *bfd)
-{
- uint8_t msg_type = *(msg->l2h);
- int ret = 0;
-
- switch (msg_type) {
- case IPAC_MSGT_PING:
- ret = ipaccess_send_pong(bfd->fd);
- break;
- case IPAC_MSGT_PONG:
- DEBUGP(DMI, "PONG!\n");
- break;
- case IPAC_MSGT_ID_ACK:
- DEBUGP(DMI, "ID_ACK? -> ACK!\n");
- ret = ipaccess_send_id_ack(bfd->fd);
- break;
- }
- return 0;
-}
-
-static int ipaccess_rcvmsg(struct e1inp_line *line, struct msgb *msg,
- struct osmo_fd *bfd)
-{
- struct tlv_parsed tlvp;
- uint8_t msg_type = *(msg->l2h);
- uint16_t site_id = 0, bts_id = 0, trx_id = 0;
- struct gsm_bts *bts;
- char *unitid;
- int len, ret;
-
- /* handle base messages */
- ipaccess_rcvmsg_base(msg, bfd);
-
- switch (msg_type) {
- case IPAC_MSGT_ID_RESP:
- DEBUGP(DMI, "ID_RESP ");
- /* parse tags, search for Unit ID */
- ret = ipaccess_idtag_parse(&tlvp, (uint8_t *)msg->l2h + 2,
- msgb_l2len(msg)-2);
- DEBUGP(DMI, "\n");
- if (ret < 0) {
- LOGP(DINP, LOGL_ERROR, "ignoring IPA response message "
- "with malformed TLVs\n");
- return ret;
- }
- if (!TLVP_PRESENT(&tlvp, IPAC_IDTAG_UNIT))
- break;
-
- len = TLVP_LEN(&tlvp, IPAC_IDTAG_UNIT);
- if (len < 1)
- break;
-
- /* lookup BTS, create sign_link, ... */
- unitid = (char *) TLVP_VAL(&tlvp, IPAC_IDTAG_UNIT);
- unitid[len - 1] = '\0';
- ipaccess_parse_unitid(unitid, &site_id, &bts_id, &trx_id);
- bts = find_bts_by_unitid(e1h->gsmnet, site_id, bts_id);
- if (!bts) {
- LOGP(DINP, LOGL_ERROR, "Unable to find BTS configuration for "
- " %u/%u/%u, disconnecting\n", site_id, bts_id,
- trx_id);
- return -EIO;
- }
- DEBUGP(DINP, "Identified BTS %u/%u/%u\n", site_id, bts_id, trx_id);
- if (bfd->priv_nr == PRIV_OML) {
- /* drop any old oml connection */
- ipaccess_drop_oml(bts);
- bts->oml_link = e1inp_sign_link_create(&line->ts[PRIV_OML - 1],
- E1INP_SIGN_OML, bts->c0,
- bts->oml_tei, 0);
- } else if (bfd->priv_nr == PRIV_RSL) {
- struct e1inp_ts *e1i_ts;
- struct osmo_fd *newbfd;
- struct gsm_bts_trx *trx = gsm_bts_trx_num(bts, trx_id);
-
- /* drop any old rsl connection */
- ipaccess_drop_rsl(trx);
-
- if (!bts->oml_link) {
- osmo_fd_unregister(bfd);
- close(bfd->fd);
- bfd->fd = -1;
- talloc_free(bfd);
- return 0;
- }
-
- bfd->data = line = bts->oml_link->ts->line;
- e1i_ts = &line->ts[PRIV_RSL + trx_id - 1];
- newbfd = &e1i_ts->driver.ipaccess.fd;
- e1inp_ts_config(e1i_ts, line, E1INP_TS_TYPE_SIGN);
-
- trx->rsl_link = e1inp_sign_link_create(e1i_ts,
- E1INP_SIGN_RSL, trx,
- trx->rsl_tei, 0);
- trx->rsl_link->ts->sign.delay = 0;
-
- /* get rid of our old temporary bfd */
- memcpy(newbfd, bfd, sizeof(*newbfd));
- newbfd->priv_nr = PRIV_RSL + trx_id;
- osmo_fd_unregister(bfd);
- bfd->fd = -1;
- talloc_free(bfd);
- osmo_fd_register(newbfd);
- }
- break;
- }
- return 0;
-}
-
-#define OML_UP 0x0001
-#define RSL_UP 0x0002
-
-/*
- * read one ipa message from the socket
- * return NULL in case of error
- */
-struct msgb *ipaccess_read_msg(struct osmo_fd *bfd, int *error)
-{
- struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "Abis/IP");
- struct ipaccess_head *hh;
- int len, ret = 0;
-
- if (!msg) {
- *error = -ENOMEM;
- return NULL;
- }
-
- /* first read our 3-byte header */
- hh = (struct ipaccess_head *) msg->data;
- ret = recv(bfd->fd, msg->data, sizeof(*hh), 0);
- if (ret == 0) {
- msgb_free(msg);
- *error = ret;
- return NULL;
- } else if (ret != sizeof(*hh)) {
- if (errno != EAGAIN)
- LOGP(DINP, LOGL_ERROR, "recv error %d %s\n", ret, strerror(errno));
- msgb_free(msg);
- *error = ret;
- return NULL;
- }
-
- msgb_put(msg, ret);
-
- /* then read te length as specified in header */
- msg->l2h = msg->data + sizeof(*hh);
- len = ntohs(hh->len);
-
- if (len < 0 || TS1_ALLOC_SIZE < len + sizeof(*hh)) {
- LOGP(DINP, LOGL_ERROR, "Can not read this packet. %d avail\n", len);
- msgb_free(msg);
- *error = -EIO;
- return NULL;
- }
-
- ret = recv(bfd->fd, msg->l2h, len, 0);
- if (ret < len) {
- LOGP(DINP, LOGL_ERROR, "short read! Got %d from %d\n", ret, len);
- msgb_free(msg);
- *error = -EIO;
- return NULL;
- }
- msgb_put(msg, ret);
-
- return msg;
-}
-
-int ipaccess_drop_oml(struct gsm_bts *bts)
-{
- struct gsm_bts_trx *trx;
- struct e1inp_ts *ts;
- struct e1inp_line *line;
- struct osmo_fd *bfd;
-
- if (!bts || !bts->oml_link)
- return -1;
-
- /* send OML down */
- ts = bts->oml_link->ts;
- line = ts->line;
- e1inp_event(ts, S_INP_TEI_DN, bts->oml_link->tei, bts->oml_link->sapi);
-
- bfd = &ts->driver.ipaccess.fd;
- osmo_fd_unregister(bfd);
- close(bfd->fd);
- bfd->fd = -1;
-
- /* clean up OML and RSL */
- e1inp_sign_link_destroy(bts->oml_link);
- bts->oml_link = NULL;
- bts->ip_access.flags = 0;
-
- /* drop all RSL connections too */
- llist_for_each_entry(trx, &bts->trx_list, list)
- ipaccess_drop_rsl(trx);
-
- /* kill the E1 line now... as we have no one left to use it */
- talloc_free(line);
-
- return -1;
-}
-
-static int ipaccess_drop(struct e1inp_ts *ts, struct osmo_fd *bfd)
-{
- struct e1inp_sign_link *link;
- int bts_nr;
-
- if (!ts || !bfd->data) {
- /*
- * If we don't have a TS this means that this is a RSL
- * connection but we are not past the authentication
- * handling yet. So we can safely delete this bfd and
- * wait for a reconnect.
- * If we don't have bfd->data this means that a RSL
- * connection was accept()ed, but nothing was recv()ed
- * and the connection gets close()ed.
- */
- osmo_fd_unregister(bfd);
- close(bfd->fd);
- bfd->fd = -1;
- talloc_free(bfd);
- return -1;
- }
-
- /* attempt to find a signalling link */
- if (ts->type == E1INP_TS_TYPE_SIGN) {
- llist_for_each_entry(link, &ts->sign.sign_links, list) {
- bts_nr = link->trx->bts->bts_nr;
- /* we have issues just reconnecting RLS so we drop OML */
- ipaccess_drop_oml(link->trx->bts);
- return bts_nr;
- }
- }
-
- /* error case */
- LOGP(DINP, LOGL_ERROR, "Failed to find a signalling link for ts: %p\n", ts);
- osmo_fd_unregister(bfd);
- close(bfd->fd);
- bfd->fd = -1;
- return -1;
-}
-
-int ipaccess_drop_rsl(struct gsm_bts_trx *trx)
-{
- struct osmo_fd *bfd;
- struct e1inp_ts *ts;
-
- if (!trx || !trx->rsl_link)
- return -1;
-
- /* send RSL down */
- ts = trx->rsl_link->ts;
- e1inp_event(ts, S_INP_TEI_DN, trx->rsl_link->tei, trx->rsl_link->sapi);
-
- /* close the socket */
- bfd = &ts->driver.ipaccess.fd;
- osmo_fd_unregister(bfd);
- close(bfd->fd);
- bfd->fd = -1;
-
- /* destroy */
- e1inp_sign_link_destroy(trx->rsl_link);
- trx->rsl_link = NULL;
-
- return -1;
-}
-
-static int handle_ts1_read(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct e1inp_sign_link *link;
- struct msgb *msg;
- struct ipaccess_head *hh;
- int ret = 0, error;
-
- msg = ipaccess_read_msg(bfd, &error);
- if (!msg) {
- if (error == 0) {
- int ret = ipaccess_drop(e1i_ts, bfd);
- if (ret >= 0)
- LOGP(DINP, LOGL_NOTICE, "BTS %u disappeared, dead socket\n",
- ret);
- else
- LOGP(DINP, LOGL_NOTICE, "unknown BTS disappeared, dead socket\n");
- }
- return error;
- }
-
- DEBUGP(DMI, "RX %u: %s\n", ts_nr, osmo_hexdump(msgb_l2(msg), msgb_l2len(msg)));
-
- hh = (struct ipaccess_head *) msg->data;
- if (hh->proto == IPAC_PROTO_IPACCESS) {
- ret = ipaccess_rcvmsg(line, msg, bfd);
- if (ret < 0)
- ipaccess_drop(e1i_ts, bfd);
- msgb_free(msg);
- return ret;
- }
- /* BIG FAT WARNING: bfd might no longer exist here, since ipaccess_rcvmsg()
- * might have free'd it !!! */
-
- link = e1inp_lookup_sign_link(e1i_ts, hh->proto, 0);
- if (!link) {
- LOGP(DINP, LOGL_ERROR, "no matching signalling link for "
- "hh->proto=0x%02x\n", hh->proto);
- msgb_free(msg);
- return -EIO;
- }
- msg->dst = link;
-
- switch (link->type) {
- case E1INP_SIGN_RSL:
- if (!(link->trx->bts->ip_access.flags & (RSL_UP << link->trx->nr))) {
- e1inp_event(e1i_ts, S_INP_TEI_UP, link->tei, link->sapi);
- link->trx->bts->ip_access.flags |= (RSL_UP << link->trx->nr);
- }
- ret = abis_rsl_rcvmsg(msg);
- break;
- case E1INP_SIGN_OML:
- if (!(link->trx->bts->ip_access.flags & OML_UP)) {
- e1inp_event(e1i_ts, S_INP_TEI_UP, link->tei, link->sapi);
- link->trx->bts->ip_access.flags |= OML_UP;
- }
- ret = abis_nm_rcvmsg(msg);
- break;
- default:
- LOGP(DINP, LOGL_NOTICE, "Unknown IP.access protocol proto=0x%02x\n", hh->proto);
- msgb_free(msg);
- break;
- }
- return ret;
-}
-
-void ipaccess_prepend_header_ext(struct msgb *msg, int proto)
-{
- struct ipaccess_head_ext *hh_ext;
-
- /* prepend the osmo ip.access header extension */
- hh_ext = (struct ipaccess_head_ext *) msgb_push(msg, sizeof(*hh_ext));
- hh_ext->proto = proto;
-}
-
-void ipaccess_prepend_header(struct msgb *msg, int proto)
-{
- struct ipaccess_head *hh;
-
- /* prepend the ip.access header */
- hh = (struct ipaccess_head *) msgb_push(msg, sizeof(*hh));
- hh->len = htons(msg->len - sizeof(*hh));
- hh->proto = proto;
-}
-
-static int ts_want_write(struct e1inp_ts *e1i_ts)
-{
- e1i_ts->driver.ipaccess.fd.when |= BSC_FD_WRITE;
-
- return 0;
-}
-
-static void timeout_ts1_write(void *data)
-{
- struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data;
-
- /* trigger write of ts1, due to tx delay timer */
- ts_want_write(e1i_ts);
-}
-
-static int handle_ts1_write(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct e1inp_sign_link *sign_link;
- struct msgb *msg;
- uint8_t proto;
- int ret;
-
- bfd->when &= ~BSC_FD_WRITE;
-
- /* get the next msg for this timeslot */
- msg = e1inp_tx_ts(e1i_ts, &sign_link);
- if (!msg) {
- /* no message after tx delay timer */
- return 0;
- }
-
- switch (sign_link->type) {
- case E1INP_SIGN_OML:
- proto = IPAC_PROTO_OML;
- break;
- case E1INP_SIGN_RSL:
- proto = IPAC_PROTO_RSL;
- break;
- default:
- msgb_free(msg);
- bfd->when |= BSC_FD_WRITE; /* come back for more msg */
- return -EINVAL;
- }
-
- msg->l2h = msg->data;
- ipaccess_prepend_header(msg, sign_link->tei);
-
- DEBUGP(DMI, "TX %u: %s\n", ts_nr, osmo_hexdump(msg->l2h, msgb_l2len(msg)));
-
- ret = send(bfd->fd, msg->data, msg->len, 0);
- msgb_free(msg);
-
- /* set tx delay timer for next event */
- e1i_ts->sign.tx_timer.cb = timeout_ts1_write;
- e1i_ts->sign.tx_timer.data = e1i_ts;
-
- /* Reducing this might break the nanoBTS 900 init. */
- osmo_timer_schedule(&e1i_ts->sign.tx_timer, 0, e1i_ts->sign.delay);
-
- return ret;
-}
-
-/* callback from select.c in case one of the fd's can be read/written */
-static int ipaccess_fd_cb(struct osmo_fd *bfd, unsigned int what)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- unsigned int idx = ts_nr-1;
- struct e1inp_ts *e1i_ts;
- int rc = 0;
-
- /* In case of early RSL we might not yet have a line */
-
- if (line)
- e1i_ts = &line->ts[idx];
-
- if (!line || e1i_ts->type == E1INP_TS_TYPE_SIGN) {
- if (what & BSC_FD_READ)
- rc = handle_ts1_read(bfd);
- if (what & BSC_FD_WRITE)
- rc = handle_ts1_write(bfd);
- } else
- LOGP(DINP, LOGL_ERROR, "unknown E1 TS type %u\n", e1i_ts->type);
-
- return rc;
-}
-
-struct e1inp_driver ipaccess_driver = {
- .name = "ip.access",
- .want_write = ts_want_write,
- .default_delay = 0,
-};
-
-/* callback of the OML listening filedescriptor */
-static int listen_fd_cb(struct osmo_fd *listen_bfd, unsigned int what)
-{
- int ret;
- int idx = 0;
- int i;
- struct e1inp_line *line;
- struct e1inp_ts *e1i_ts;
- struct osmo_fd *bfd;
- struct sockaddr_in sa;
- socklen_t sa_len = sizeof(sa);
-
- if (!(what & BSC_FD_READ))
- return 0;
-
- ret = accept(listen_bfd->fd, (struct sockaddr *) &sa, &sa_len);
- if (ret < 0) {
- perror("accept");
- return ret;
- }
- LOGP(DINP, LOGL_NOTICE, "accept()ed new OML link from %s\n",
- inet_ntoa(sa.sin_addr));
-
- line = talloc_zero(tall_bsc_ctx, struct e1inp_line);
- if (!line) {
- close(ret);
- return -ENOMEM;
- }
- line->driver = &ipaccess_driver;
- //line->driver_data = e1h;
- /* create virrtual E1 timeslots for signalling */
- e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN);
-
- /* initialize the fds */
- for (i = 0; i < ARRAY_SIZE(line->ts); ++i)
- line->ts[i].driver.ipaccess.fd.fd = -1;
-
- e1i_ts = &line->ts[idx];
-
- bfd = &e1i_ts->driver.ipaccess.fd;
- bfd->fd = ret;
- bfd->data = line;
- bfd->priv_nr = PRIV_OML;
- bfd->cb = ipaccess_fd_cb;
- bfd->when = BSC_FD_READ;
- ret = osmo_fd_register(bfd);
- if (ret < 0) {
- LOGP(DINP, LOGL_ERROR, "could not register FD\n");
- close(bfd->fd);
- talloc_free(line);
- return ret;
- }
-
- /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */
- ret = ipaccess_send_id_req(bfd->fd);
-
- return ret;
- //return e1inp_line_register(line);
-}
-
-static int rsl_listen_fd_cb(struct osmo_fd *listen_bfd, unsigned int what)
-{
- struct sockaddr_in sa;
- socklen_t sa_len = sizeof(sa);
- struct osmo_fd *bfd;
- int ret;
-
- if (!(what & BSC_FD_READ))
- return 0;
-
- bfd = talloc_zero(tall_bsc_ctx, struct osmo_fd);
- if (!bfd)
- return -ENOMEM;
-
- /* Some BTS has connected to us, but we don't know yet which line
- * (as created by the OML link) to associate it with. Thus, we
- * allocate a temporary bfd until we have received ID from BTS */
-
- bfd->fd = accept(listen_bfd->fd, (struct sockaddr *) &sa, &sa_len);
- if (bfd->fd < 0) {
- perror("accept");
- return bfd->fd;
- }
- LOGP(DINP, LOGL_NOTICE, "accept()ed new RSL link from %s\n", inet_ntoa(sa.sin_addr));
- bfd->priv_nr = PRIV_RSL;
- bfd->cb = ipaccess_fd_cb;
- bfd->when = BSC_FD_READ;
- ret = osmo_fd_register(bfd);
- if (ret < 0) {
- LOGP(DINP, LOGL_ERROR, "could not register FD\n");
- close(bfd->fd);
- talloc_free(bfd);
- return ret;
- }
- /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */
- ret = ipaccess_send_id_req(bfd->fd);
-
- return 0;
-}
-
-/* Actively connect to a BTS. Currently used by ipaccess-config.c */
-int ipaccess_connect(struct e1inp_line *line, struct sockaddr_in *sa)
-{
- struct e1inp_ts *e1i_ts = &line->ts[0];
- struct osmo_fd *bfd = &e1i_ts->driver.ipaccess.fd;
- int ret, on = 1;
-
- bfd->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
- bfd->cb = ipaccess_fd_cb;
- bfd->when = BSC_FD_READ | BSC_FD_WRITE;
- bfd->data = line;
- bfd->priv_nr = PRIV_OML;
-
- if (bfd->fd < 0) {
- LOGP(DINP, LOGL_ERROR, "could not create TCP socket.\n");
- return -EIO;
- }
-
- setsockopt(bfd->fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
-
- ret = connect(bfd->fd, (struct sockaddr *) sa, sizeof(*sa));
- if (ret < 0) {
- LOGP(DINP, LOGL_ERROR, "could not connect socket\n");
- close(bfd->fd);
- return ret;
- }
-
- ret = osmo_fd_register(bfd);
- if (ret < 0) {
- close(bfd->fd);
- return ret;
- }
-
- line->driver = &ipaccess_driver;
-
- return ret;
- //return e1inp_line_register(line);
-}
-
-int ipaccess_setup(struct gsm_network *gsmnet)
-{
- int ret;
-
- e1h = talloc_zero(tall_bsc_ctx, struct ia_e1_handle);
- if (!e1h)
- return -ENOMEM;
-
- e1h->gsmnet = gsmnet;
-
- /* Listen for OML connections */
- ret = make_sock(&e1h->listen_fd, IPPROTO_TCP, INADDR_ANY,
- IPA_TCP_PORT_OML, 0, listen_fd_cb, NULL);
- if (ret < 0)
- return ret;
-
- /* Listen for RSL connections */
- ret = make_sock(&e1h->rsl_listen_fd, IPPROTO_TCP, INADDR_ANY,
- IPA_TCP_PORT_RSL, 0, rsl_listen_fd_cb, NULL);
- if (ret < 0)
- return ret;
-
- return ret;
-}
-
-void e1inp_ipaccess_init(void)
-{
- e1inp_driver_register(&ipaccess_driver);
-}
diff --git a/openbsc/src/libabis/input/lapd.c b/openbsc/src/libabis/input/lapd.c
deleted file mode 100644
index 2934b58c..00000000
--- a/openbsc/src/libabis/input/lapd.c
+++ /dev/null
@@ -1,730 +0,0 @@
-/* OpenBSC minimal LAPD implementation */
-
-/* (C) 2009 by oystein@homelien.no
- * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
- * (C) 2010 by Digium and Matthew Fredrickson <creslin@digium.com>
- * (C) 2011 by Harald Welte <laforge@gnumonks.org>
- *
- * All Rights Reserved
- *
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-/* TODO:
- * detect RR timeout and set SAP state back to SABM_RETRANSMIT
- * use of value_string
- * further code cleanup (spaghetti)
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-
-#include "lapd.h"
-
-#include <osmocom/core/linuxlist.h>
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/timer.h>
-#include <openbsc/debug.h>
-
-#define SABM_INTERVAL 0, 300000
-
-typedef enum {
- LAPD_TEI_NONE = 0,
- LAPD_TEI_ASSIGNED,
- LAPD_TEI_ACTIVE,
-} lapd_tei_state;
-
-const char *lapd_tei_states[] = {
- "NONE",
- "ASSIGNED",
- "ACTIVE",
-};
-
-typedef enum {
- LAPD_TYPE_NONE = 0,
-
- LAPD_TYPE_I,
- LAPD_TYPE_S,
- LAPD_TYPE_U,
-} lapd_msg_type;
-
-typedef enum {
- /* commands/responses */
- LAPD_CMD_NONE = 0,
-
- LAPD_CMD_I,
- LAPD_CMD_RR,
- LAPD_CMD_RNR,
- LAPD_CMD_REJ,
-
- LAPD_CMD_SABME,
- LAPD_CMD_DM,
- LAPD_CMD_UI,
- LAPD_CMD_DISC,
- LAPD_CMD_UA,
- LAPD_CMD_FRMR,
- LAPD_CMD_XID,
-} lapd_cmd_type;
-
-const char *lapd_cmd_types[] = {
- "NONE",
-
- "I",
- "RR",
- "RNR",
- "REJ",
-
- "SABME",
- "DM",
- "UI",
- "DISC",
- "UA",
- "FRMR",
- "XID",
-
-};
-
-enum lapd_sap_state {
- SAP_STATE_INACTIVE,
- SAP_STATE_SABM_RETRANS,
- SAP_STATE_ACTIVE,
-};
-
-const char *lapd_sap_states[] = {
- "INACTIVE",
- "SABM_RETRANS",
- "ACTIVE",
-};
-
-const char *lapd_msg_types = "?ISU";
-
-/* structure representing an allocated TEI within a LAPD instance */
-struct lapd_tei {
- struct llist_head list;
- struct lapd_instance *li;
- uint8_t tei;
- lapd_tei_state state;
-
- struct llist_head sap_list;
-};
-
-/* Structure representing a SAP within a TEI. We use this for TE-mode to
- * re-transmit SABM */
-struct lapd_sap {
- struct llist_head list;
- struct lapd_tei *tei;
- uint8_t sapi;
- enum lapd_sap_state state;
-
- /* A valid N(R) value is one that is in the range V(A) ≤ N(R) ≤ V(S). */
- int vs; /* next to be transmitted */
- int va; /* last acked by peer */
- int vr; /* next expected to be received */
-
- struct osmo_timer_list sabme_timer; /* timer to re-transmit SABM message */
-};
-
-/* 3.5.2.2 Send state variable V(S)
- * Each point-to-point data link connection endpoint shall have an associated V(S) when using I frame
- * commands. V(S) denotes the sequence number of the next I frame to be transmitted. The V(S) can
- * take on the value 0 through n minus 1. The value of V(S) shall be incremented by 1 with each
- * successive I frame transmission, and shall not exceed V(A) by more than the maximum number of
- * outstanding I frames k. The value of k may be in the range of 1 ≤ k ≤ 127.
- *
- * 3.5.2.3 Acknowledge state variable V(A)
- * Each point-to-point data link connection endpoint shall have an associated V(A) when using I frame
- * commands and supervisory frame commands/responses. V(A) identifies the last I frame that has been
- * acknowledged by its peer [V(A) − 1 equals the N(S) of the last acknowledged I frame]. V(A) can
- * take on the value 0 through n minus 1. The value of V(A) shall be updated by the valid N(R) values
- * received from its peer (see 3.5.2.6). A valid N(R) value is one that is in the range V(A) ≤ N(R) ≤
- * V(S).
- *
- * 3.5.2.5 Receive state variable V(R)
- * Each point-to-point data link connection endpoint shall have an associated V(R) when using I frame
- * commands and supervisory frame commands/responses. V(R) denotes the sequence number of the
- * next in-sequence I frame expected to be received. V(R) can take on the value 0 through n minus 1.
- * The value of V(R) shall be incremented by one with the receipt of an error-free, in-sequence I frame
- * whose N(S) equals V(R).
- */
-#define LAPD_NS(sap) (sap->vs)
-#define LAPD_NR(sap) (sap->vr)
-
-/* 3.5.2.4 Send sequence number N(S)
- * Only I frames contain N(S), the send sequence number of transmitted I frames. At the time that an in-
- * sequence I frame is designated for transmission, the value of N(S) is set equal to V(S).
- *
- * 3.5.2.6 Receive sequence number N(R)
- * All I frames and supervisory frames contain N(R), the expected send sequence number of the next
- * received I frame. At the time that a frame of the above types is designated for transmission, the value
- * of N(R) is set equal to V(R). N(R) indicates that the data link layer entity transmitting the N(R) has
- * correctly received all I frames numbered up to and including N(R) − 1.
- */
-
-/* Resolve TEI structure from given numeric TEI */
-static struct lapd_tei *teip_from_tei(struct lapd_instance *li, uint8_t tei)
-{
- struct lapd_tei *lt;
-
- llist_for_each_entry(lt, &li->tei_list, list) {
- if (lt->tei == tei)
- return lt;
- }
- return NULL;
-};
-
-static void lapd_tei_set_state(struct lapd_tei *teip, int newstate)
-{
- LOGP(DMI, LOGL_INFO, "LAPD state change on TEI %d: %s -> %s\n", teip->tei,
- lapd_tei_states[teip->state], lapd_tei_states[newstate]);
- teip->state = newstate;
-};
-
-/* Allocate a new TEI */
-struct lapd_tei *lapd_tei_alloc(struct lapd_instance *li, uint8_t tei)
-{
- struct lapd_tei *teip;
-
- teip = talloc_zero(li, struct lapd_tei);
- if (!teip)
- return NULL;
-
- teip->li = li;
- teip->tei = tei;
- llist_add(&teip->list, &li->tei_list);
- INIT_LLIST_HEAD(&teip->sap_list);
-
- lapd_tei_set_state(teip, LAPD_TEI_ASSIGNED);
-
- return teip;
-}
-
-/* Find a SAP within a given TEI */
-static struct lapd_sap *lapd_sap_find(struct lapd_tei *teip, uint8_t sapi)
-{
- struct lapd_sap *sap;
-
- llist_for_each_entry(sap, &teip->sap_list, list) {
- if (sap->sapi == sapi)
- return sap;
- }
-
- return NULL;
-}
-
-static void sabme_timer_cb(void *_sap);
-
-/* Allocate a new SAP within a given TEI */
-static struct lapd_sap *lapd_sap_alloc(struct lapd_tei *teip, uint8_t sapi)
-{
- struct lapd_sap *sap = talloc_zero(teip, struct lapd_sap);
-
- LOGP(DMI, LOGL_INFO, "LAPD Allocating SAP for SAPI=%u / TEI=%u\n",
- sapi, teip->tei);
-
- sap->sapi = sapi;
- sap->tei = teip;
- sap->sabme_timer.cb = &sabme_timer_cb;
- sap->sabme_timer.data = sap;
-
- llist_add(&sap->list, &teip->sap_list);
-
- return sap;
-}
-
-static void lapd_sap_set_state(struct lapd_tei *teip, uint8_t sapi,
- enum lapd_sap_state newstate)
-{
- struct lapd_sap *sap = lapd_sap_find(teip, sapi);
- if (!sap)
- return;
-
- LOGP(DMI, LOGL_INFO, "LAPD state change on TEI %u / SAPI %u: "
- "%s -> %s\n", teip->tei, sapi,
- lapd_sap_states[sap->state], lapd_sap_states[newstate]);
- switch (sap->state) {
- case SAP_STATE_SABM_RETRANS:
- if (newstate != SAP_STATE_SABM_RETRANS)
- osmo_timer_del(&sap->sabme_timer);
- break;
- default:
- if (newstate == SAP_STATE_SABM_RETRANS)
- osmo_timer_schedule(&sap->sabme_timer, SABM_INTERVAL);
- break;
- }
-
- sap->state = newstate;
-};
-
-/* Input function into TEI manager */
-static void lapd_tei_receive(struct lapd_instance *li, uint8_t *data, int len)
-{
- uint8_t entity = data[0];
- uint8_t ref = data[1];
- uint8_t mt = data[3];
- uint8_t action = data[4] >> 1;
- uint8_t e = data[4] & 1;
- uint8_t resp[8];
- struct lapd_tei *teip;
-
- DEBUGP(DMI, "LAPD TEIMGR: entity %x, ref %x, mt %x, action %x, e %x\n",
- entity, ref, mt, action, e);
-
- switch (mt) {
- case 0x01: /* IDENTITY REQUEST */
- DEBUGP(DMI, "LAPD TEIMGR: identity request for TEI %u\n", action);
-
- teip = teip_from_tei(li, action);
- if (!teip) {
- LOGP(DMI, LOGL_INFO, "TEI MGR: New TEI %u\n", action);
- teip = lapd_tei_alloc(li, action);
- }
-
- /* Send ACCEPT */
- memmove(resp, "\xfe\xff\x03\x0f\x00\x00\x02\x00", 8);
- resp[7] = (action << 1) | 1;
- li->transmit_cb(resp, 8, li->cbdata);
-
- if (teip->state == LAPD_TEI_NONE)
- lapd_tei_set_state(teip, LAPD_TEI_ASSIGNED);
- break;
- default:
- LOGP(DMI, LOGL_NOTICE, "LAPD TEIMGR: unknown mt %x action %x\n",
- mt, action);
- break;
- };
-};
-
-/* General input function for any data received for this LAPD instance */
-uint8_t *
-lapd_receive(struct lapd_instance *li, uint8_t * data, unsigned int len,
- int *ilen, lapd_mph_type *prim, int *error)
-{
- uint8_t sapi, cr, tei, command;
- int pf, ns, nr;
- uint8_t *contents;
- struct lapd_tei *teip;
- struct lapd_sap *sap;
-
- uint8_t resp[8];
- int l = 0;
-
- *ilen = 0;
- *prim = 0;
-
- if (len < 2) {
- LOGP(DMI, LOGL_ERROR, "LAPD receive len %d < 2, ignoring\n", len);
- *error = LAPD_ERR_BAD_LEN;
- return NULL;
- };
-
- if ((data[0] & 1) != 0 || (data[1] & 1) != 1) {
- LOGP(DMI, LOGL_ERROR, "LAPD address field %x/%x not well formed\n",
- data[0], data[1]);
- *error = LAPD_ERR_BAD_ADDR;
- return NULL;
- };
-
- sapi = data[0] >> 2;
- cr = (data[0] >> 1) & 1;
- tei = data[1] >> 1;
- command = li->network_side ^ cr;
- //DEBUGP(DMI, " address sapi %x tei %d cmd %d cr %d\n", sapi, tei, command, cr);
-
- if (len < 3) {
- LOGP(DMI, LOGL_ERROR, "LAPD receive len %d < 3, ignoring\n", len);
- *error = LAPD_ERR_BAD_LEN;
- return NULL;
- };
-
- lapd_msg_type typ = 0;
- lapd_cmd_type cmd = 0;
- pf = -1;
- ns = -1;
- nr = -1;
- if ((data[2] & 1) == 0) {
- typ = LAPD_TYPE_I;
- if (len < 4) {
- LOGP(DMI, LOGL_ERROR, "LAPD I frame, len %d < 4\n", len);
- *error = LAPD_ERR_BAD_LEN;
- return NULL;
- }
- ns = data[2] >> 1;
- nr = data[3] >> 1;
- pf = data[3] & 1;
- cmd = LAPD_CMD_I;
- } else if ((data[2] & 3) == 1) {
- typ = LAPD_TYPE_S;
- if (len < 4) {
- LOGP(DMI, LOGL_ERROR, "LAPD S frame, len %d < 4\n", len);
- *error = LAPD_ERR_BAD_LEN;
- return NULL;
- }
- nr = data[3] >> 1;
- pf = data[3] & 1;
- switch (data[2]) {
- case 0x1:
- cmd = LAPD_CMD_RR;
- break;
- case 0x5:
- cmd = LAPD_CMD_RNR;
- break;
- case 0x9:
- cmd = LAPD_CMD_REJ;
- break;
- default:
- LOGP(DMI, LOGL_ERROR, "LAPD unknown S cmd %x\n", data[2]);
- *error = LAPD_ERR_UNKNOWN_S_CMD;
- return NULL;
- };
- } else if ((data[2] & 3) == 3) {
- typ = LAPD_TYPE_U;
- pf = (data[2] >> 4) & 1;
- int val = data[2] & ~(1 << 4);
- switch (val) {
- case 0x6f:
- cmd = LAPD_CMD_SABME;
- break;
- case 0x0f:
- cmd = LAPD_CMD_DM;
- break;
- case 0x03:
- cmd = LAPD_CMD_UI;
- break;
- case 0x43:
- cmd = LAPD_CMD_DISC;
- break;
- case 0x63:
- cmd = LAPD_CMD_UA;
- break;
- case 0x87:
- cmd = LAPD_CMD_FRMR;
- break;
- case 0xaf:
- cmd = LAPD_CMD_XID;
- break;
-
- default:
- LOGP(DMI, LOGL_ERROR, "LAPD unknown U cmd %x "
- "(pf %x data %x)\n", val, pf, data[2]);
- *error = LAPD_ERR_UNKNOWN_U_CMD;
- return NULL;
- };
- };
-
- contents = &data[4];
- if (typ == LAPD_TYPE_U)
- contents--;
- *ilen = len - (contents - data);
-
- if (tei == 127)
- lapd_tei_receive(li, contents, *ilen);
-
- teip = teip_from_tei(li, tei);
- if (!teip) {
- LOGP(DMI, LOGL_NOTICE, "LAPD Unknown TEI %u\n", tei);
- *error = LAPD_ERR_UNKNOWN_TEI;
- return NULL;
- }
-
- sap = lapd_sap_find(teip, sapi);
- if (!sap) {
- LOGP(DMI, LOGL_INFO, "LAPD No SAP for TEI=%u / SAPI=%u, "
- "allocating\n", tei, sapi);
- sap = lapd_sap_alloc(teip, sapi);
- }
-
- DEBUGP(DMI, "<- %c %s sapi %x tei %3d cmd %x pf %x ns %3d nr %3d "
- "ilen %d teip %p vs %d va %d vr %d len %d\n",
- lapd_msg_types[typ], lapd_cmd_types[cmd], sapi, tei, command, pf,
- ns, nr, *ilen, teip, sap->vs, sap->va, sap->vr, len);
-
- switch (cmd) {
- case LAPD_CMD_I:
- if (ns != sap->vr) {
- DEBUGP(DMI, "LAPD ns %d != vr %d\n", ns, sap->vr);
- if (ns == ((sap->vr - 1) & 0x7f)) {
- LOGP(DMI, LOGL_NOTICE, "LAPD double frame, "
- "ignoring\n");
- cmd = 0; // ignore
- } else {
- LOGP(DMI, LOGL_ERROR, "LAPD Out of order "
- "ns %d != vr %d, ignoring\n", ns, sap->vr);
- return NULL;
- };
- } else {
- //printf("IN SEQUENCE\n");
- sap->vr = (ns + 1) & 0x7f; // FIXME: hack!
- };
-
- break;
- case LAPD_CMD_UI:
- break;
- case LAPD_CMD_SABME:
- sap->vs = 0;
- sap->vr = 0;
- sap->va = 0;
-
- // ua
- resp[l++] = data[0];
- resp[l++] = (tei << 1) | 1;
- resp[l++] = 0x73;
- li->transmit_cb(resp, l, li->cbdata);
- if (teip->state != LAPD_TEI_ACTIVE) {
- if (teip->state == LAPD_TEI_ASSIGNED) {
- lapd_tei_set_state(teip,
- LAPD_TEI_ACTIVE);
- //printf("ASSIGNED and ACTIVE\n");
- } else {
-#if 0
- DEBUGP(DMI, "rr in strange state, send rej\n");
-
- // rej
- resp[l++] = (sap-> sapi << 2) | (li->network_side ? 0 : 2);
- resp[l++] = (tei << 1) | 1;
- resp[l++] = 0x09; //rej
- resp[l++] = ((sap->vr + 1) << 1) | 0;
- li->transmit_cb(resp, l, li->cbdata);
- pf = 0; // dont reply
-#endif
- };
- };
-
- *prim = LAPD_MPH_ACTIVATE_IND;
- break;
- case LAPD_CMD_UA:
- sap->vs = 0;
- sap->vr = 0;
- sap->va = 0;
- lapd_tei_set_state(teip, LAPD_TEI_ACTIVE);
- lapd_sap_set_state(teip, sapi, SAP_STATE_ACTIVE);
- *prim = LAPD_MPH_ACTIVATE_IND;
- break;
- case LAPD_CMD_RR:
- sap->va = (nr & 0x7f);
-#if 0
- if (teip->state != LAPD_TEI_ACTIVE) {
- if (teip->state == LAPD_TEI_ASSIGNED) {
- lapd_tei_set_state(teip, LAPD_TEI_ACTIVE);
- *prim = LAPD_MPH_ACTIVATE_IND;
- //printf("ASSIGNED and ACTIVE\n");
- } else {
-#if 0
- DEBUGP(DMI, "rr in strange " "state, send rej\n");
-
- // rej
- resp[l++] = (sap-> sapi << 2) | (li->network_side ? 0 : 2);
- resp[l++] = (tei << 1) | 1;
- resp[l++] = 0x09; //rej
- resp[l++] =
- ((sap->vr + 1) << 1) | 0;
- li->transmit_cb(resp, l, li->cbdata);
- pf = 0; // dont reply
-#endif
- };
- };
-#endif
- if (pf) {
- // interrogating us, send rr
- resp[l++] = data[0];
- resp[l++] = (tei << 1) | 1;
- resp[l++] = 0x01; // rr
- resp[l++] = (LAPD_NR(sap) << 1) | (data[3] & 1); // pf bit from req
-
- li->transmit_cb(resp, l, li->cbdata);
-
- };
- break;
- case LAPD_CMD_FRMR:
- // frame reject
-#if 0
- if (teip->state == LAPD_TEI_ACTIVE)
- *prim = LAPD_MPH_DEACTIVATE_IND;
- lapd_tei_set_state(teip, LAPD_TEI_ASSIGNED);
-#endif
- LOGP(DMI, LOGL_NOTICE, "frame reject, ignoring\n");
- break;
- case LAPD_CMD_DISC:
- // disconnect
- resp[l++] = data[0];
- resp[l++] = (tei << 1) | 1;
- resp[l++] = 0x73;
- li->transmit_cb(resp, l, li->cbdata);
- lapd_tei_set_state(teip, LAPD_TEI_NONE);
- break;
- default:
- LOGP(DMI, LOGL_NOTICE, "unknown cmd for tei %d (cmd %x)\n",
- tei, cmd);
- break;
- }
-
- if (typ == LAPD_TYPE_I) {
- /* send rr
- * Thu Jan 22 19:17:13 2009 <4000> sangoma.c:340 read (62/25) 4: fa 33 01 0a
- * lapd <- S RR sapi 3e tei 25 cmd 0 pf 0 ns -1 nr 5 ilen 0 teip 0x613800 vs 7 va 5 vr 2 len 4
- */
-
- /* interrogating us, send rr */
- DEBUGP(DMI, "LAPD Sending RR response\n");
- resp[l++] = data[0];
- resp[l++] = (tei << 1) | 1;
- resp[l++] = 0x01; // rr
- resp[l++] = (LAPD_NR(sap) << 1) | (data[3] & 1); // pf bit from req
-
- li->transmit_cb(resp, l, li->cbdata);
-
- if (cmd != 0) {
- *prim = LAPD_DL_DATA_IND;
- return contents;
- }
- } else if (tei != 127 && typ == LAPD_TYPE_U && cmd == LAPD_CMD_UI) {
- *prim = LAPD_DL_UNITDATA_IND;
- return contents;
- }
-
- *error = LAPD_ERR_BAD_CMD;
- return NULL;
-};
-
-/* low-level function to send a single SABM message */
-static int lapd_send_sabm(struct lapd_instance *li, uint8_t tei, uint8_t sapi)
-{
- struct msgb *msg = msgb_alloc_headroom(1024, 128, "LAPD SABM");
- if (!msg)
- return -ENOMEM;
-
- LOGP(DMI, LOGL_INFO, "LAPD Sending SABM for TEI=%u, SAPI=%u\n", tei, sapi);
-
- msgb_put_u8(msg, (sapi << 2) | (li->network_side ? 2 : 0));
- msgb_put_u8(msg, (tei << 1) | 1);
- msgb_put_u8(msg, 0x7F);
-
- li->transmit_cb(msg->data, msg->len, li->cbdata);
-
- msgb_free(msg);
-
- return 0;
-}
-
-/* timer call-back function for SABM re-transmission */
-static void sabme_timer_cb(void *_sap)
-{
- struct lapd_sap *sap = _sap;
-
- lapd_send_sabm(sap->tei->li, sap->tei->tei, sap->sapi);
-
- if (sap->state == SAP_STATE_SABM_RETRANS)
- osmo_timer_schedule(&sap->sabme_timer, SABM_INTERVAL);
-}
-
-/* Start a (user-side) SAP for the specified TEI/SAPI on the LAPD instance */
-int lapd_sap_start(struct lapd_instance *li, uint8_t tei, uint8_t sapi)
-{
- struct lapd_sap *sap;
- struct lapd_tei *teip;
-
- teip = teip_from_tei(li, tei);
- if (!teip)
- teip = lapd_tei_alloc(li, tei);
-
- sap = lapd_sap_find(teip, sapi);
- if (sap)
- return -EEXIST;
-
- sap = lapd_sap_alloc(teip, sapi);
-
- lapd_sap_set_state(teip, sapi, SAP_STATE_SABM_RETRANS);
-
- return 0;
-}
-
-/* Stop a (user-side) SAP for the specified TEI/SAPI on the LAPD instance */
-int lapd_sap_stop(struct lapd_instance *li, uint8_t tei, uint8_t sapi)
-{
- struct lapd_tei *teip;
- struct lapd_sap *sap;
-
- teip = teip_from_tei(li, tei);
- if (!teip)
- return -ENODEV;
-
- sap = lapd_sap_find(teip, sapi);
- if (!sap)
- return -ENODEV;
-
- lapd_sap_set_state(teip, sapi, SAP_STATE_INACTIVE);
-
- llist_del(&sap->list);
- talloc_free(sap);
-
- return 0;
-}
-
-/* Transmit Data (I-Frame) on the given LAPD Instance / TEI / SAPI */
-void lapd_transmit(struct lapd_instance *li, uint8_t tei, uint8_t sapi,
- uint8_t *data, unsigned int len)
-{
- struct lapd_tei *teip = teip_from_tei(li, tei);
- struct lapd_sap *sap;
-
- if (!teip) {
- LOGP(DMI, LOGL_ERROR, "LAPD Cannot transmit on "
- "non-existing TEI %u\n", tei);
- return;
- }
-
- sap = lapd_sap_find(teip, sapi);
- if (!sap) {
- LOGP(DMI, LOGL_INFO, "LAPD Tx on unknown SAPI=%u "
- "in TEI=%u, allocating\n", sapi, tei);
- sap = lapd_sap_alloc(teip, sapi);
- }
-
- /* prepend stuff */
- uint8_t buf[10000];
- memset(buf, 0, sizeof(buf));
- memmove(buf + 4, data, len);
- len += 4;
-
- buf[0] = (sapi << 2) | (li->network_side ? 2 : 0);
- buf[1] = (tei << 1) | 1;
- buf[2] = (LAPD_NS(sap) << 1);
- buf[3] = (LAPD_NR(sap) << 1) | 0;
-
- sap->vs = (sap->vs + 1) & 0x7f;
-
- li->transmit_cb(buf, len, li->cbdata);
-};
-
-/* Allocate a new LAPD instance */
-struct lapd_instance *lapd_instance_alloc(int network_side,
- void (*tx_cb)(uint8_t *data, int len,
- void *cbdata), void *cbdata)
-{
- struct lapd_instance *li;
-
- li = talloc_zero(NULL, struct lapd_instance);
- if (!li)
- return NULL;
-
- li->transmit_cb = tx_cb;
- li->cbdata = cbdata;
- li->network_side = network_side;
- INIT_LLIST_HEAD(&li->tei_list);
-
- return li;
-}
diff --git a/openbsc/src/libabis/input/lapd.h b/openbsc/src/libabis/input/lapd.h
deleted file mode 100644
index dd22028a..00000000
--- a/openbsc/src/libabis/input/lapd.h
+++ /dev/null
@@ -1,58 +0,0 @@
-#ifndef OPENBSC_LAPD_H
-#define OPENBSC_LAPD_H
-
-#include <stdint.h>
-
-#include <osmocom/core/linuxlist.h>
-
-typedef enum {
- LAPD_MPH_NONE = 0,
-
- LAPD_MPH_ACTIVATE_IND,
- LAPD_MPH_DEACTIVATE_IND,
-
- LAPD_DL_DATA_IND,
- LAPD_DL_UNITDATA_IND,
-
-} lapd_mph_type;
-
-struct lapd_instance {
- struct llist_head list; /* list of LAPD instances */
- int network_side;
-
- void (*transmit_cb)(uint8_t *data, int len, void *cbdata);
- void *cbdata;
-
- struct llist_head tei_list; /* list of TEI in this LAPD instance */
-};
-
-enum lapd_recv_errors {
- LAPD_ERR_NONE = 0,
- LAPD_ERR_BAD_LEN,
- LAPD_ERR_BAD_ADDR,
- LAPD_ERR_UNKNOWN_S_CMD,
- LAPD_ERR_UNKNOWN_U_CMD,
- LAPD_ERR_UNKNOWN_TEI,
- LAPD_ERR_BAD_CMD,
- __LAPD_ERR_MAX
-};
-
-extern uint8_t *lapd_receive(struct lapd_instance *li, uint8_t *data,
- unsigned int len, int *ilen, lapd_mph_type *prim,
- int *error);
-
-extern void lapd_transmit(struct lapd_instance *li, uint8_t tei, uint8_t sapi,
- uint8_t *data, unsigned int len);
-
-struct lapd_instance *lapd_instance_alloc(int network_side,
- void (*tx_cb)(uint8_t *data, int len,
- void *cbdata), void *cbdata);
-
-
-/* Start a (user-side) SAP for the specified TEI/SAPI on the LAPD instance */
-int lapd_sap_start(struct lapd_instance *li, uint8_t tei, uint8_t sapi);
-
-/* Stop a (user-side) SAP for the specified TEI/SAPI on the LAPD instance */
-int lapd_sap_stop(struct lapd_instance *li, uint8_t tei, uint8_t sapi);
-
-#endif /* OPENBSC_LAPD_H */
diff --git a/openbsc/src/libabis/input/misdn.c b/openbsc/src/libabis/input/misdn.c
deleted file mode 100644
index ab92d612..00000000
--- a/openbsc/src/libabis/input/misdn.c
+++ /dev/null
@@ -1,541 +0,0 @@
-/* OpenBSC Abis input driver for mISDNuser */
-
-/* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org>
- * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
- *
- * 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 <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <time.h>
-#include <sys/fcntl.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <arpa/inet.h>
-#include <mISDNif.h>
-
-//#define AF_COMPATIBILITY_FUNC
-//#include <compat_af_isdn.h>
-#ifndef AF_ISDN
-#define AF_ISDN 34
-#define PF_ISDN AF_ISDN
-#endif
-
-#include <osmocom/core/select.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/core/talloc.h>
-#include <openbsc/debug.h>
-#include <openbsc/gsm_data.h>
-#include <openbsc/abis_nm.h>
-#include <openbsc/abis_rsl.h>
-#include <openbsc/subchan_demux.h>
-#include <openbsc/e1_input.h>
-#include <openbsc/signal.h>
-
-#define TS1_ALLOC_SIZE 300
-
-struct prim_name {
- unsigned int prim;
- const char *name;
-};
-
-const struct prim_name prim_names[] = {
- { PH_CONTROL_IND, "PH_CONTROL_IND" },
- { PH_DATA_IND, "PH_DATA_IND" },
- { PH_DATA_CNF, "PH_DATA_CNF" },
- { PH_ACTIVATE_IND, "PH_ACTIVATE_IND" },
- { DL_ESTABLISH_IND, "DL_ESTABLISH_IND" },
- { DL_ESTABLISH_CNF, "DL_ESTABLISH_CNF" },
- { DL_RELEASE_IND, "DL_RELEASE_IND" },
- { DL_RELEASE_CNF, "DL_RELEASE_CNF" },
- { DL_DATA_IND, "DL_DATA_IND" },
- { DL_UNITDATA_IND, "DL_UNITDATA_IND" },
- { DL_INFORMATION_IND, "DL_INFORMATION_IND" },
- { MPH_ACTIVATE_IND, "MPH_ACTIVATE_IND" },
- { MPH_DEACTIVATE_IND, "MPH_DEACTIVATE_IND" },
-};
-
-const char *get_prim_name(unsigned int prim)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(prim_names); i++) {
- if (prim_names[i].prim == prim)
- return prim_names[i].name;
- }
-
- return "UNKNOWN";
-}
-
-static int handle_ts1_read(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct e1inp_sign_link *link;
- struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "mISDN TS1");
- struct sockaddr_mISDN l2addr;
- struct mISDNhead *hh;
- socklen_t alen;
- int ret;
-
- if (!msg)
- return -ENOMEM;
-
- hh = (struct mISDNhead *) msg->data;
-
- alen = sizeof(l2addr);
- ret = recvfrom(bfd->fd, msg->data, 300, 0,
- (struct sockaddr *) &l2addr, &alen);
- if (ret < 0) {
- fprintf(stderr, "recvfrom error %s\n", strerror(errno));
- return ret;
- }
-
- if (alen != sizeof(l2addr)) {
- fprintf(stderr, "%s error len\n", __func__);
- return -EINVAL;
- }
-
- msgb_put(msg, ret);
-
- DEBUGP(DMI, "alen =%d, dev(%d) channel(%d) sapi(%d) tei(%d)\n",
- alen, l2addr.dev, l2addr.channel, l2addr.sapi, l2addr.tei);
-
- DEBUGP(DMI, "<= len = %d, prim(0x%x) id(0x%x): %s\n",
- ret, hh->prim, hh->id, get_prim_name(hh->prim));
-
- switch (hh->prim) {
- case DL_INFORMATION_IND:
- /* mISDN tells us which channel number is allocated for this
- * tuple of (SAPI, TEI). */
- DEBUGP(DMI, "DL_INFORMATION_IND: use channel(%d) sapi(%d) tei(%d) for now\n",
- l2addr.channel, l2addr.sapi, l2addr.tei);
- link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi);
- if (!link) {
- DEBUGPC(DMI, "mISDN message for unknown sign_link\n");
- msgb_free(msg);
- return -EINVAL;
- }
- /* save the channel number in the driver private struct */
- link->driver.misdn.channel = l2addr.channel;
- break;
- case DL_ESTABLISH_IND:
- DEBUGP(DMI, "DL_ESTABLISH_IND: channel(%d) sapi(%d) tei(%d)\n",
- l2addr.channel, l2addr.sapi, l2addr.tei);
- /* For some strange reason, sometimes the DL_INFORMATION_IND tells
- * us the wrong channel, and we only get the real channel number
- * during the DL_ESTABLISH_IND */
- link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi);
- if (!link) {
- DEBUGPC(DMI, "mISDN message for unknown sign_link\n");
- msgb_free(msg);
- return -EINVAL;
- }
- /* save the channel number in the driver private struct */
- link->driver.misdn.channel = l2addr.channel;
- ret = e1inp_event(e1i_ts, S_INP_TEI_UP, l2addr.tei, l2addr.sapi);
- break;
- case DL_RELEASE_IND:
- DEBUGP(DMI, "DL_RELEASE_IND: channel(%d) sapi(%d) tei(%d)\n",
- l2addr.channel, l2addr.sapi, l2addr.tei);
- ret = e1inp_event(e1i_ts, S_INP_TEI_DN, l2addr.tei, l2addr.sapi);
- break;
- case DL_DATA_IND:
- case DL_UNITDATA_IND:
- msg->l2h = msg->data + MISDN_HEADER_LEN;
- DEBUGP(DMI, "RX: %s\n", osmo_hexdump(msgb_l2(msg), ret - MISDN_HEADER_LEN));
- ret = e1inp_rx_ts(e1i_ts, msg, l2addr.tei, l2addr.sapi);
- break;
- case PH_ACTIVATE_IND:
- DEBUGP(DMI, "PH_ACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n",
- l2addr.channel, l2addr.sapi, l2addr.tei);
- break;
- case PH_DEACTIVATE_IND:
- DEBUGP(DMI, "PH_DEACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n",
- l2addr.channel, l2addr.sapi, l2addr.tei);
- break;
- default:
- break;
- }
- return ret;
-}
-
-static int ts_want_write(struct e1inp_ts *e1i_ts)
-{
- /* We never include the mISDN B-Channel FD into the
- * writeset, since it doesn't support poll() based
- * write flow control */
- if (e1i_ts->type == E1INP_TS_TYPE_TRAU)
- return 0;
-
- e1i_ts->driver.misdn.fd.when |= BSC_FD_WRITE;
-
- return 0;
-}
-
-static void timeout_ts1_write(void *data)
-{
- struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data;
-
- /* trigger write of ts1, due to tx delay timer */
- ts_want_write(e1i_ts);
-}
-
-static int handle_ts1_write(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct e1inp_sign_link *sign_link;
- struct sockaddr_mISDN sa;
- struct msgb *msg;
- struct mISDNhead *hh;
- uint8_t *l2_data;
- int ret;
-
- bfd->when &= ~BSC_FD_WRITE;
-
- /* get the next msg for this timeslot */
- msg = e1inp_tx_ts(e1i_ts, &sign_link);
- if (!msg) {
- /* no message after tx delay timer */
- return 0;
- }
-
- l2_data = msg->data;
-
- /* prepend the mISDNhead */
- hh = (struct mISDNhead *) msgb_push(msg, sizeof(*hh));
- hh->prim = DL_DATA_REQ;
-
- DEBUGP(DMI, "TX channel(%d) TEI(%d) SAPI(%d): %s\n",
- sign_link->driver.misdn.channel, sign_link->tei,
- sign_link->sapi, osmo_hexdump(l2_data, msg->len - MISDN_HEADER_LEN));
-
- /* construct the sockaddr */
- sa.family = AF_ISDN;
- sa.sapi = sign_link->sapi;
- sa.dev = sign_link->tei;
- sa.channel = sign_link->driver.misdn.channel;
-
- ret = sendto(bfd->fd, msg->data, msg->len, 0,
- (struct sockaddr *)&sa, sizeof(sa));
- if (ret < 0)
- fprintf(stderr, "%s sendto failed %d\n", __func__, ret);
- msgb_free(msg);
-
- /* set tx delay timer for next event */
- e1i_ts->sign.tx_timer.cb = timeout_ts1_write;
- e1i_ts->sign.tx_timer.data = e1i_ts;
- osmo_timer_schedule(&e1i_ts->sign.tx_timer, 0, e1i_ts->sign.delay);
-
- return ret;
-}
-
-#define BCHAN_TX_GRAN 160
-/* write to a B channel TS */
-static int handle_tsX_write(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct mISDNhead *hh;
- uint8_t tx_buf[BCHAN_TX_GRAN + sizeof(*hh)];
- struct subch_mux *mx = &e1i_ts->trau.mux;
- int ret;
-
- hh = (struct mISDNhead *) tx_buf;
- hh->prim = PH_DATA_REQ;
-
- subchan_mux_out(mx, tx_buf+sizeof(*hh), BCHAN_TX_GRAN);
-
- DEBUGP(DMIB, "BCHAN TX: %s\n",
- osmo_hexdump(tx_buf+sizeof(*hh), BCHAN_TX_GRAN));
-
- ret = send(bfd->fd, tx_buf, sizeof(*hh) + BCHAN_TX_GRAN, 0);
- if (ret < sizeof(*hh) + BCHAN_TX_GRAN)
- DEBUGP(DMIB, "send returns %d instead of %zu\n", ret,
- sizeof(*hh) + BCHAN_TX_GRAN);
-
- return ret;
-}
-
-#define TSX_ALLOC_SIZE 4096
-/* FIXME: read from a B channel TS */
-static int handle_tsX_read(struct osmo_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct msgb *msg = msgb_alloc(TSX_ALLOC_SIZE, "mISDN TSx");
- struct mISDNhead *hh;
- int ret;
-
- if (!msg)
- return -ENOMEM;
-
- hh = (struct mISDNhead *) msg->data;
-
- ret = recv(bfd->fd, msg->data, TSX_ALLOC_SIZE, 0);
- if (ret < 0) {
- fprintf(stderr, "recvfrom error %s\n", strerror(errno));
- return ret;
- }
-
- msgb_put(msg, ret);
-
- if (hh->prim != PH_CONTROL_IND)
- DEBUGP(DMIB, "<= BCHAN len = %d, prim(0x%x) id(0x%x): %s\n",
- ret, hh->prim, hh->id, get_prim_name(hh->prim));
-
- switch (hh->prim) {
- case PH_DATA_IND:
- msg->l2h = msg->data + MISDN_HEADER_LEN;
- DEBUGP(DMIB, "BCHAN RX: %s\n",
- osmo_hexdump(msgb_l2(msg), ret - MISDN_HEADER_LEN));
- ret = e1inp_rx_ts(e1i_ts, msg, 0, 0);
- break;
- case PH_ACTIVATE_IND:
- case PH_DATA_CNF:
- /* physical layer indicates that data has been sent,
- * we thus can send some more data */
- ret = handle_tsX_write(bfd);
- default:
- break;
- }
- /* FIXME: why do we free signalling msgs in the caller, and trau not? */
- msgb_free(msg);
-
- return ret;
-}
-
-/* callback from select.c in case one of the fd's can be read/written */
-static int misdn_fd_cb(struct osmo_fd *bfd, unsigned int what)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- unsigned int idx = ts_nr-1;
- struct e1inp_ts *e1i_ts = &line->ts[idx];
- int rc = 0;
-
- switch (e1i_ts->type) {
- case E1INP_TS_TYPE_SIGN:
- if (what & BSC_FD_READ)
- rc = handle_ts1_read(bfd);
- if (what & BSC_FD_WRITE)
- rc = handle_ts1_write(bfd);
- break;
- case E1INP_TS_TYPE_TRAU:
- if (what & BSC_FD_READ)
- rc = handle_tsX_read(bfd);
- /* We never include the mISDN B-Channel FD into the
- * writeset, since it doesn't support poll() based
- * write flow control */
- break;
- default:
- fprintf(stderr, "unknown E1 TS type %u\n", e1i_ts->type);
- break;
- }
-
- return rc;
-}
-
-static int activate_bchan(struct e1inp_line *line, int ts, int act)
-{
- struct mISDNhead hh;
- int ret;
- unsigned int idx = ts-1;
- struct e1inp_ts *e1i_ts = &line->ts[idx];
- struct osmo_fd *bfd = &e1i_ts->driver.misdn.fd;
-
- fprintf(stdout, "activate bchan\n");
- if (act)
- hh.prim = PH_ACTIVATE_REQ;
- else
- hh.prim = PH_DEACTIVATE_REQ;
-
- hh.id = MISDN_ID_ANY;
- ret = sendto(bfd->fd, &hh, sizeof(hh), 0, NULL, 0);
- if (ret < 0) {
- fprintf(stdout, "could not send ACTIVATE_RQ %s\n",
- strerror(errno));
- }
-
- return ret;
-}
-
-static int mi_e1_line_update(struct e1inp_line *line);
-
-struct e1inp_driver misdn_driver = {
- .name = "misdn",
- .want_write = ts_want_write,
- .default_delay = 50000,
- .line_update = &mi_e1_line_update,
-};
-
-static int mi_e1_setup(struct e1inp_line *line, int release_l2)
-{
- int ts, ret;
-
- /* TS0 is CRC4, don't need any fd for it */
- for (ts = 1; ts < NUM_E1_TS; ts++) {
- unsigned int idx = ts-1;
- struct e1inp_ts *e1i_ts = &line->ts[idx];
- struct osmo_fd *bfd = &e1i_ts->driver.misdn.fd;
- struct sockaddr_mISDN addr;
-
- bfd->data = line;
- bfd->priv_nr = ts;
- bfd->cb = misdn_fd_cb;
-
- switch (e1i_ts->type) {
- case E1INP_TS_TYPE_NONE:
- continue;
- break;
- case E1INP_TS_TYPE_SIGN:
- bfd->fd = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_LAPD_NT);
- bfd->when = BSC_FD_READ;
- break;
- case E1INP_TS_TYPE_TRAU:
- bfd->fd = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_RAW);
- /* We never include the mISDN B-Channel FD into the
- * writeset, since it doesn't support poll() based
- * write flow control */
- bfd->when = BSC_FD_READ;
- break;
- }
-
- if (bfd->fd < 0) {
- fprintf(stderr, "%s could not open socket %s\n",
- __func__, strerror(errno));
- return bfd->fd;
- }
-
- memset(&addr, 0, sizeof(addr));
- addr.family = AF_ISDN;
- addr.dev = line->num;
- switch (e1i_ts->type) {
- case E1INP_TS_TYPE_SIGN:
- addr.channel = 0;
- /* SAPI not supported yet in kernel */
- //addr.sapi = e1inp_ts->sign.sapi;
- addr.sapi = 0;
- addr.tei = GROUP_TEI;
- break;
- case E1INP_TS_TYPE_TRAU:
- addr.channel = ts;
- break;
- default:
- DEBUGP(DMI, "unsupported E1 TS type: %u\n",
- e1i_ts->type);
- break;
- }
-
- ret = bind(bfd->fd, (struct sockaddr *) &addr, sizeof(addr));
- if (ret < 0) {
- fprintf(stderr, "could not bind l2 socket %s\n",
- strerror(errno));
- return -EIO;
- }
-
- if (e1i_ts->type == E1INP_TS_TYPE_SIGN) {
- ret = ioctl(bfd->fd, IMCLEAR_L2, &release_l2);
- if (ret < 0) {
- fprintf(stderr, "could not send IOCTL IMCLEAN_L2 %s\n", strerror(errno));
- return -EIO;
- }
- }
-
- /* FIXME: only activate B-Channels once we start to
- * use them to conserve CPU power */
- if (e1i_ts->type == E1INP_TS_TYPE_TRAU)
- activate_bchan(line, ts, 1);
-
- ret = osmo_fd_register(bfd);
- if (ret < 0) {
- fprintf(stderr, "could not register FD: %s\n",
- strerror(ret));
- return ret;
- }
- }
-
- return 0;
-}
-
-static int mi_e1_line_update(struct e1inp_line *line)
-{
- struct mISDN_devinfo devinfo;
- int sk, ret, cnt;
-
- if (line->driver != &misdn_driver)
- return -EINVAL;
-
- /* open the ISDN card device */
- sk = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE);
- if (sk < 0) {
- fprintf(stderr, "%s could not open socket %s\n",
- __func__, strerror(errno));
- return sk;
- }
-
- ret = ioctl(sk, IMGETCOUNT, &cnt);
- if (ret) {
- fprintf(stderr, "%s error getting interf count: %s\n",
- __func__, strerror(errno));
- close(sk);
- return -ENODEV;
- }
- //DEBUGP(DMI,"%d device%s found\n", cnt, (cnt==1)?"":"s");
- printf("%d device%s found\n", cnt, (cnt==1)?"":"s");
-#if 1
- devinfo.id = line->num;
- ret = ioctl(sk, IMGETDEVINFO, &devinfo);
- if (ret < 0) {
- fprintf(stdout, "error getting info for device %d: %s\n",
- line->num, strerror(errno));
- return -ENODEV;
- }
- fprintf(stdout, " id: %d\n", devinfo.id);
- fprintf(stdout, " Dprotocols: %08x\n", devinfo.Dprotocols);
- fprintf(stdout, " Bprotocols: %08x\n", devinfo.Bprotocols);
- fprintf(stdout, " protocol: %d\n", devinfo.protocol);
- fprintf(stdout, " nrbchan: %d\n", devinfo.nrbchan);
- fprintf(stdout, " name: %s\n", devinfo.name);
-#endif
-
- if (!(devinfo.Dprotocols & (1 << ISDN_P_NT_E1))) {
- fprintf(stderr, "error: card is not of type E1 (NT-mode)\n");
- return -EINVAL;
- }
-
- ret = mi_e1_setup(line, 1);
- if (ret)
- return ret;
-
- return 0;
-}
-
-void e1inp_misdn_init(void)
-{
- /* register the driver with the core */
- e1inp_driver_register(&misdn_driver);
-}