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Diffstat (limited to 'openbsc/src/libabis/input/misdn.c')
-rw-r--r--openbsc/src/libabis/input/misdn.c541
1 files changed, 0 insertions, 541 deletions
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);
-}