diff options
Diffstat (limited to 'openbsc/src/libabis')
| -rw-r--r-- | openbsc/src/libabis/Makefile.am | 14 | ||||
| -rw-r--r-- | openbsc/src/libabis/e1_input.c | 689 | ||||
| -rw-r--r-- | openbsc/src/libabis/e1_input_vty.c | 264 | ||||
| -rw-r--r-- | openbsc/src/libabis/input/dahdi.c | 527 | ||||
| -rw-r--r-- | openbsc/src/libabis/input/hsl.c | 458 | ||||
| -rw-r--r-- | openbsc/src/libabis/input/ipaccess.c | 842 | ||||
| -rw-r--r-- | openbsc/src/libabis/input/lapd.c | 730 | ||||
| -rw-r--r-- | openbsc/src/libabis/input/lapd.h | 58 | ||||
| -rw-r--r-- | openbsc/src/libabis/input/misdn.c | 541 |
9 files changed, 0 insertions, 4123 deletions
diff --git a/openbsc/src/libabis/Makefile.am b/openbsc/src/libabis/Makefile.am deleted file mode 100644 index ffaa201ec..000000000 --- a/openbsc/src/libabis/Makefile.am +++ /dev/null @@ -1,14 +0,0 @@ -INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir) -AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(COVERAGE_CFLAGS) -AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(COVERAGE_LDFLAGS) - -noinst_LIBRARIES = libabis.a - -libabis_a_SOURCES = e1_input.c e1_input_vty.c \ - input/misdn.c \ - input/ipaccess.c \ - input/hsl.c \ - input/dahdi.c \ - input/lapd.c - -EXTRA_DIST = input/lapd.h diff --git a/openbsc/src/libabis/e1_input.c b/openbsc/src/libabis/e1_input.c deleted file mode 100644 index eab418a24..000000000 --- a/openbsc/src/libabis/e1_input.c +++ /dev/null @@ -1,689 +0,0 @@ -/* OpenBSC Abis interface to E1 */ - -/* (C) 2008-2009 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 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/linuxlist.h> -#include <osmocom/core/msgb.h> -#include <osmocom/core/talloc.h> -#include <osmocom/core/rate_ctr.h> - -#include <openbsc/debug.h> -#include <openbsc/gsm_data.h> -#include <openbsc/e1_input.h> -#include <openbsc/abis_nm.h> -#include <openbsc/abis_rsl.h> -#include <openbsc/subchan_demux.h> -#include <openbsc/trau_frame.h> -#include <openbsc/trau_mux.h> -#include <openbsc/signal.h> -#include <openbsc/misdn.h> - -#include "../../bscconfig.h" - -#define NUM_E1_TS 32 - -/* list of all E1 drivers */ -LLIST_HEAD(e1inp_driver_list); - -/* list of all E1 lines */ -LLIST_HEAD(e1inp_line_list); - -static void *tall_sigl_ctx; - -static const struct rate_ctr_desc e1inp_ctr_d[] = { - [E1I_CTR_HDLC_ABORT] = { - "hdlc.abort", "HDLC abort" - }, - [E1I_CTR_HDLC_BADFCS] = { - "hdlc.bad_fcs", "HLDC Bad FCS" - }, - [E1I_CTR_HDLC_OVERR] = { - "hdlc.overrun", "HDLC Overrun" - }, - [E1I_CTR_ALARM] = { - "alarm", "Alarm" - }, - [E1I_CTR_REMOVED] = { - "removed", "Line removed" - }, -}; - -static const struct rate_ctr_group_desc e1inp_ctr_g_d = { - .group_name_prefix = "e1inp", - .group_description = "E1 Input subsystem", - .num_ctr = ARRAY_SIZE(e1inp_ctr_d), - .ctr_desc = e1inp_ctr_d, -}; - -/* - * pcap writing of the misdn load - * pcap format is from http://wiki.wireshark.org/Development/LibpcapFileFormat - */ -#define DLT_LINUX_LAPD 177 -#define PCAP_INPUT 0 -#define PCAP_OUTPUT 1 - -struct pcap_hdr { - uint32_t magic_number; - uint16_t version_major; - uint16_t version_minor; - int32_t thiszone; - uint32_t sigfigs; - uint32_t snaplen; - uint32_t network; -} __attribute__((packed)); - -struct pcaprec_hdr { - uint32_t ts_sec; - uint32_t ts_usec; - uint32_t incl_len; - uint32_t orig_len; -} __attribute__((packed)); - -struct fake_linux_lapd_header { - uint16_t pkttype; - uint16_t hatype; - uint16_t halen; - uint64_t addr; - int16_t protocol; -} __attribute__((packed)); - -struct lapd_header { - uint8_t ea1 : 1; - uint8_t cr : 1; - uint8_t sapi : 6; - uint8_t ea2 : 1; - uint8_t tei : 7; - uint8_t control_foo; /* fake UM's ... */ -} __attribute__((packed)); - -osmo_static_assert(offsetof(struct fake_linux_lapd_header, hatype) == 2, hatype_offset); -osmo_static_assert(offsetof(struct fake_linux_lapd_header, halen) == 4, halen_offset); -osmo_static_assert(offsetof(struct fake_linux_lapd_header, addr) == 6, addr_offset); -osmo_static_assert(offsetof(struct fake_linux_lapd_header, protocol) == 14, proto_offset); -osmo_static_assert(sizeof(struct fake_linux_lapd_header) == 16, lapd_header_size); - - -static int pcap_fd = -1; - -void e1_set_pcap_fd(int fd) -{ - int ret; - struct pcap_hdr header = { - .magic_number = 0xa1b2c3d4, - .version_major = 2, - .version_minor = 4, - .thiszone = 0, - .sigfigs = 0, - .snaplen = 65535, - .network = DLT_LINUX_LAPD, - }; - - pcap_fd = fd; - ret = write(pcap_fd, &header, sizeof(header)); -} - -/* This currently only works for the D-Channel */ -static void write_pcap_packet(int direction, int sapi, int tei, - struct msgb *msg) { - if (pcap_fd < 0) - return; - - int ret; - time_t cur_time; - struct tm *tm; - - struct fake_linux_lapd_header header = { - .pkttype = 4, - .hatype = 0, - .halen = 0, - .addr = direction == PCAP_OUTPUT ? 0x0 : 0x1, - .protocol = ntohs(48), - }; - - struct lapd_header lapd_header = { - .ea1 = 0, - .cr = direction == PCAP_OUTPUT ? 1 : 0, - .sapi = sapi & 0x3F, - .ea2 = 1, - .tei = tei & 0x7F, - .control_foo = 0x03 /* UI */, - }; - - struct pcaprec_hdr payload_header = { - .ts_sec = 0, - .ts_usec = 0, - .incl_len = msgb_l2len(msg) + sizeof(struct fake_linux_lapd_header) - + sizeof(struct lapd_header), - .orig_len = msgb_l2len(msg) + sizeof(struct fake_linux_lapd_header) - + sizeof(struct lapd_header), - }; - - - cur_time = time(NULL); - tm = localtime(&cur_time); - payload_header.ts_sec = mktime(tm); - - ret = write(pcap_fd, &payload_header, sizeof(payload_header)); - ret = write(pcap_fd, &header, sizeof(header)); - ret = write(pcap_fd, &lapd_header, sizeof(lapd_header)); - ret = write(pcap_fd, msg->l2h, msgb_l2len(msg)); -} - -static const char *sign_types[] = { - [E1INP_SIGN_NONE] = "None", - [E1INP_SIGN_OML] = "OML", - [E1INP_SIGN_RSL] = "RSL", -}; -const char *e1inp_signtype_name(enum e1inp_sign_type tp) -{ - if (tp >= ARRAY_SIZE(sign_types)) - return "undefined"; - return sign_types[tp]; -} - -static const char *ts_types[] = { - [E1INP_TS_TYPE_NONE] = "None", - [E1INP_TS_TYPE_SIGN] = "Signalling", - [E1INP_TS_TYPE_TRAU] = "TRAU", -}; - -const char *e1inp_tstype_name(enum e1inp_ts_type tp) -{ - if (tp >= ARRAY_SIZE(ts_types)) - return "undefined"; - return ts_types[tp]; -} - -/* callback when a TRAU frame was received */ -static int subch_cb(struct subch_demux *dmx, int ch, uint8_t *data, int len, - void *_priv) -{ - struct e1inp_ts *e1i_ts = _priv; - struct gsm_e1_subslot src_ss; - - src_ss.e1_nr = e1i_ts->line->num; - src_ss.e1_ts = e1i_ts->num; - src_ss.e1_ts_ss = ch; - - return trau_mux_input(&src_ss, data, len); -} - -int abis_sendmsg(struct msgb *msg) -{ - struct e1inp_sign_link *sign_link = msg->dst; - struct e1inp_driver *e1inp_driver; - struct e1inp_ts *e1i_ts; - - msg->l2h = msg->data; - - /* don't know how to route this message. */ - if (sign_link == NULL) { - LOGP(DLINP, LOGL_ERROR, "abis_sendmsg: msg->dst == NULL: %s\n", - osmo_hexdump(msg->data, msg->len)); - talloc_free(msg); - return -EINVAL; - } - e1i_ts = sign_link->ts; - if (!osmo_timer_pending(&e1i_ts->sign.tx_timer)) { - /* notify the driver we have something to write */ - e1inp_driver = sign_link->ts->line->driver; - e1inp_driver->want_write(e1i_ts); - } - msgb_enqueue(&sign_link->tx_list, msg); - - /* dump it */ - write_pcap_packet(PCAP_OUTPUT, sign_link->sapi, sign_link->tei, msg); - - return 0; -} - -int abis_rsl_sendmsg(struct msgb *msg) -{ - struct e1inp_sign_link *sign_link = (struct e1inp_sign_link *)msg->dst; - struct e1inp_driver *e1inp_driver; - struct e1inp_ts *e1i_ts; - - msg->l2h = msg->data; - - if (!sign_link) { - LOGP(DRSL, LOGL_ERROR, "rsl_sendmsg: msg->dst == NULL: %s\n", - osmo_hexdump(msg->data, msg->len)); - talloc_free(msg); - return -EINVAL; - } - e1i_ts = sign_link->ts; - if (!osmo_timer_pending(&e1i_ts->sign.tx_timer)) { - /* notify the driver we have something to write */ - e1inp_driver = sign_link->ts->line->driver; - e1inp_driver->want_write(e1i_ts); - } - msgb_enqueue(&sign_link->tx_list, msg); - - /* dump it */ - write_pcap_packet(PCAP_OUTPUT, sign_link->sapi, sign_link->tei, msg); - - return 0; -} - -int _abis_nm_sendmsg(struct msgb *msg, int to_trx_oml) -{ - struct e1inp_sign_link *sign_link = msg->dst; - - msg->l2h = msg->data; - - if (!msg->dst) { - LOGP(DNM, LOGL_ERROR, "_abis_nm_sendmsg: msg->dst == NULL\n"); - return -EINVAL; - } - - /* Check for TRX-specific OML link first */ - if (to_trx_oml) { - if (!sign_link->trx->oml_link) - return -ENODEV; - msg->dst = sign_link->trx->oml_link; - } - return abis_sendmsg(msg); -} - -/* Timeslot */ - -/* configure and initialize one e1inp_ts */ -int e1inp_ts_config(struct e1inp_ts *ts, struct e1inp_line *line, - enum e1inp_ts_type type) -{ - if (ts->type == type && ts->line && line) - return 0; - - ts->type = type; - ts->line = line; - - switch (type) { - case E1INP_TS_TYPE_SIGN: - if (line && line->driver) - ts->sign.delay = line->driver->default_delay; - else - ts->sign.delay = 100000; - INIT_LLIST_HEAD(&ts->sign.sign_links); - break; - case E1INP_TS_TYPE_TRAU: - subchan_mux_init(&ts->trau.mux); - ts->trau.demux.out_cb = subch_cb; - ts->trau.demux.data = ts; - subch_demux_init(&ts->trau.demux); - break; - default: - LOGP(DMI, LOGL_ERROR, "unsupported E1 timeslot type %u\n", - ts->type); - return -EINVAL; - } - return 0; -} - -struct e1inp_line *e1inp_line_get(uint8_t e1_nr) -{ - struct e1inp_line *e1i_line; - - /* iterate over global list of e1 lines */ - llist_for_each_entry(e1i_line, &e1inp_line_list, list) { - if (e1i_line->num == e1_nr) - return e1i_line; - } - return NULL; -} - -struct e1inp_line *e1inp_line_create(uint8_t e1_nr, const char *driver_name) -{ - struct e1inp_driver *driver; - struct e1inp_line *line; - int i; - - line = e1inp_line_get(e1_nr); - if (line) { - LOGP(DINP, LOGL_ERROR, "E1 Line %u already exists\n", - e1_nr); - return NULL; - } - - driver = e1inp_driver_find(driver_name); - if (!driver) { - LOGP(DINP, LOGL_ERROR, "No such E1 driver '%s'\n", - driver_name); - return NULL; - } - - line = talloc_zero(tall_bsc_ctx, struct e1inp_line); - if (!line) - return NULL; - - line->driver = driver; - line->num = e1_nr; - - line->rate_ctr = rate_ctr_group_alloc(line, &e1inp_ctr_g_d, line->num); - - for (i = 0; i < NUM_E1_TS; i++) { - line->ts[i].num = i+1; - line->ts[i].line = line; - } - llist_add_tail(&line->list, &e1inp_line_list); - - return line; -} - -#if 0 -struct e1inp_line *e1inp_line_get_create(uint8_t e1_nr) -{ - struct e1inp_line *line; - int i; - - line = e1inp_line_get(e1_nr); - if (line) - return line; - - line = talloc_zero(tall_bsc_ctx, struct e1inp_line); - if (!line) - return NULL; - - line->num = e1_nr; - for (i = 0; i < NUM_E1_TS; i++) { - line->ts[i].num = i+1; - line->ts[i].line = line; - } - llist_add_tail(&line->list, &e1inp_line_list); - - return line; -} -#endif - -static struct e1inp_ts *e1inp_ts_get(uint8_t e1_nr, uint8_t ts_nr) -{ - struct e1inp_line *e1i_line; - - e1i_line = e1inp_line_get(e1_nr); - if (!e1i_line) - return NULL; - - return &e1i_line->ts[ts_nr-1]; -} - -struct subch_mux *e1inp_get_mux(uint8_t e1_nr, uint8_t ts_nr) -{ - struct e1inp_ts *e1i_ts = e1inp_ts_get(e1_nr, ts_nr); - - if (!e1i_ts) - return NULL; - - return &e1i_ts->trau.mux; -} - -/* Signalling Link */ - -struct e1inp_sign_link *e1inp_lookup_sign_link(struct e1inp_ts *e1i, - uint8_t tei, uint8_t sapi) -{ - struct e1inp_sign_link *link; - - llist_for_each_entry(link, &e1i->sign.sign_links, list) { - if (link->sapi == sapi && link->tei == tei) - return link; - } - - return NULL; -} - -/* create a new signalling link in a E1 timeslot */ - -struct e1inp_sign_link * -e1inp_sign_link_create(struct e1inp_ts *ts, enum e1inp_sign_type type, - struct gsm_bts_trx *trx, uint8_t tei, - uint8_t sapi) -{ - struct e1inp_sign_link *link; - - if (ts->type != E1INP_TS_TYPE_SIGN) - return NULL; - - link = talloc_zero(tall_sigl_ctx, struct e1inp_sign_link); - if (!link) - return NULL; - - link->ts = ts; - link->type = type; - INIT_LLIST_HEAD(&link->tx_list); - link->trx = trx; - link->tei = tei; - link->sapi = sapi; - - llist_add_tail(&link->list, &ts->sign.sign_links); - - return link; -} - -void e1inp_sign_link_destroy(struct e1inp_sign_link *link) -{ - struct msgb *msg; - - llist_del(&link->list); - while (!llist_empty(&link->tx_list)) { - msg = msgb_dequeue(&link->tx_list); - msgb_free(msg); - } - - if (link->ts->type == E1INP_TS_TYPE_SIGN) - osmo_timer_del(&link->ts->sign.tx_timer); - - talloc_free(link); -} - -/* the E1 driver tells us he has received something on a TS */ -int e1inp_rx_ts(struct e1inp_ts *ts, struct msgb *msg, - uint8_t tei, uint8_t sapi) -{ - struct e1inp_sign_link *link; - struct gsm_bts *bts; - int ret; - - switch (ts->type) { - case E1INP_TS_TYPE_SIGN: - /* consult the list of signalling links */ - write_pcap_packet(PCAP_INPUT, sapi, tei, msg); - link = e1inp_lookup_sign_link(ts, tei, sapi); - if (!link) { - LOGP(DMI, LOGL_ERROR, "didn't find signalling link for " - "tei %d, sapi %d\n", tei, sapi); - return -EINVAL; - } - - log_set_context(BSC_CTX_BTS, link->trx->bts); - switch (link->type) { - case E1INP_SIGN_OML: - msg->dst = link; - bts = link->trx->bts; - ret = bts->model->oml_rcvmsg(msg); - break; - case E1INP_SIGN_RSL: - msg->dst = link; - ret = abis_rsl_rcvmsg(msg); - break; - default: - ret = -EINVAL; - LOGP(DMI, LOGL_ERROR, "unknown link type %u\n", link->type); - break; - } - break; - case E1INP_TS_TYPE_TRAU: - ret = subch_demux_in(&ts->trau.demux, msg->l2h, msgb_l2len(msg)); - break; - default: - ret = -EINVAL; - LOGP(DMI, LOGL_ERROR, "unknown TS type %u\n", ts->type); - break; - } - - return ret; -} - -#define TSX_ALLOC_SIZE 4096 - -/* called by driver if it wants to transmit on a given TS */ -struct msgb *e1inp_tx_ts(struct e1inp_ts *e1i_ts, - struct e1inp_sign_link **sign_link) -{ - struct e1inp_sign_link *link; - struct msgb *msg = NULL; - int len; - - switch (e1i_ts->type) { - case E1INP_TS_TYPE_SIGN: - /* FIXME: implement this round robin */ - llist_for_each_entry(link, &e1i_ts->sign.sign_links, list) { - msg = msgb_dequeue(&link->tx_list); - if (msg) { - if (sign_link) - *sign_link = link; - break; - } - } - break; - case E1INP_TS_TYPE_TRAU: - msg = msgb_alloc(TSX_ALLOC_SIZE, "TRAU_TX"); - if (!msg) - return NULL; - len = subchan_mux_out(&e1i_ts->trau.mux, msg->data, 40); - msgb_put(msg, 40); - break; - default: - LOGP(DMI, LOGL_ERROR, "unsupported E1 TS type %u\n", e1i_ts->type); - return NULL; - } - return msg; -} - -/* called by driver in case some kind of link state event */ -int e1inp_event(struct e1inp_ts *ts, int evt, uint8_t tei, uint8_t sapi) -{ - struct e1inp_sign_link *link; - struct input_signal_data isd; - - link = e1inp_lookup_sign_link(ts, tei, sapi); - if (!link) - return -EINVAL; - - isd.line = ts->line; - isd.link_type = link->type; - isd.trx = link->trx; - isd.tei = tei; - isd.sapi = sapi; - - /* report further upwards */ - osmo_signal_dispatch(SS_INPUT, evt, &isd); - return 0; -} - -/* register a driver with the E1 core */ -int e1inp_driver_register(struct e1inp_driver *drv) -{ - llist_add_tail(&drv->list, &e1inp_driver_list); - return 0; -} - -struct e1inp_driver *e1inp_driver_find(const char *name) -{ - struct e1inp_driver *drv; - - llist_for_each_entry(drv, &e1inp_driver_list, list) { - if (!strcasecmp(name, drv->name)) - return drv; - } - return NULL; -} - -int e1inp_line_update(struct e1inp_line *line) -{ - struct input_signal_data isd; - int rc; - - if (line->driver && line->driver->line_update) - rc = line->driver->line_update(line); - else - rc = 0; - - /* Send a signal to anyone who is interested in new lines being - * configured */ - memset(&isd, 0, sizeof(isd)); - isd.line = line; - osmo_signal_dispatch(SS_INPUT, S_INP_LINE_INIT, &isd); - - return rc; -} - -static int e1i_sig_cb(unsigned int subsys, unsigned int signal, - void *handler_data, void *signal_data) -{ - if (subsys != SS_GLOBAL || - signal != S_GLOBAL_SHUTDOWN) - return 0; - - if (pcap_fd) { - close(pcap_fd); - pcap_fd = -1; - } - - return 0; -} - -void e1inp_misdn_init(void); -void e1inp_dahdi_init(void); -void e1inp_ipaccess_init(void); -void e1inp_hsl_init(void); - -void e1inp_init(void) -{ - tall_sigl_ctx = talloc_named_const(tall_bsc_ctx, 1, - "e1inp_sign_link"); - osmo_signal_register_handler(SS_GLOBAL, e1i_sig_cb, NULL); - - e1inp_misdn_init(); -#ifdef HAVE_DAHDI_USER_H - e1inp_dahdi_init(); -#endif - e1inp_ipaccess_init(); - e1inp_hsl_init(); -} diff --git a/openbsc/src/libabis/e1_input_vty.c b/openbsc/src/libabis/e1_input_vty.c deleted file mode 100644 index eb34aa188..000000000 --- a/openbsc/src/libabis/e1_input_vty.c +++ /dev/null @@ -1,264 +0,0 @@ -/* OpenBSC E1 vty interface */ -/* (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 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 <stdlib.h> -#include <unistd.h> - -#include <osmocom/core/linuxlist.h> -#include <osmocom/core/talloc.h> -#include <osmocom/core/utils.h> -#include <osmocom/gsm/gsm_utils.h> - -#include <osmocom/vty/command.h> -#include <osmocom/vty/buffer.h> -#include <osmocom/vty/vty.h> -#include <osmocom/vty/logging.h> -#include <osmocom/vty/misc.h> -#include <osmocom/vty/telnet_interface.h> - -#include <openbsc/gsm_data.h> -#include <openbsc/e1_input.h> -#include <openbsc/vty.h> -#include <openbsc/debug.h> - -#include "../../bscconfig.h" - -/* CONFIG */ - -#define E1_DRIVER_NAMES "(misdn|dahdi)" -#define E1_DRIVER_HELP "mISDN supported E1 Card\n" \ - "DAHDI supported E1/T1/J1 Card\n" - -#define E1_LINE_HELP "Configure E1/T1/J1 Line\n" "Line Number\n" - -DEFUN(cfg_e1line_driver, cfg_e1_line_driver_cmd, - "e1_line <0-255> driver " E1_DRIVER_NAMES, - E1_LINE_HELP "Set driver for this line\n" - E1_DRIVER_HELP) -{ - struct e1inp_line *line; - int e1_nr = atoi(argv[0]); - - line = e1inp_line_get(e1_nr); - if (line) { - vty_out(vty, "%% Line %d already exists%s", e1_nr, VTY_NEWLINE); - return CMD_WARNING; - } - line = e1inp_line_create(e1_nr, argv[1]); - if (!line) { - vty_out(vty, "%% Error creating line %d%s", e1_nr, VTY_NEWLINE); - return CMD_WARNING; - } - - return CMD_SUCCESS; -} - -DEFUN(cfg_e1line_name, cfg_e1_line_name_cmd, - "e1_line <0-255> name .LINE", - E1_LINE_HELP "Set name for this line\n" "Human readable name\n") -{ - struct e1inp_line *line; - int e1_nr = atoi(argv[0]); - - line = e1inp_line_get(e1_nr); - if (!line) { - vty_out(vty, "%% Line %d doesn't exist%s", e1_nr, VTY_NEWLINE); - return CMD_WARNING; - } - if (line->name) { - talloc_free((void *)line->name); - line->name = NULL; - } - line->name = talloc_strdup(line, argv[1]); - - return CMD_SUCCESS; -} - -DEFUN(cfg_e1inp, cfg_e1inp_cmd, - "e1_input", - "Configure E1/T1/J1 TDM input\n") -{ - vty->node = E1INP_NODE; - - return CMD_SUCCESS; -} - -static int e1inp_config_write(struct vty *vty) -{ - struct e1inp_line *line; - - if (llist_empty(&e1inp_line_list)) - return CMD_SUCCESS; - - vty_out(vty, "e1_input%s", VTY_NEWLINE); - - llist_for_each_entry(line, &e1inp_line_list, list) { - vty_out(vty, " e1_line %u driver %s%s", line->num, - line->driver->name, VTY_NEWLINE); - if (line->name) - vty_out(vty, " e1_line %u name %s%s", line->num, - line->name, VTY_NEWLINE); - } - return CMD_SUCCESS; -} - -/* SHOW */ - -static void e1drv_dump_vty(struct vty *vty, struct e1inp_driver *drv) -{ - vty_out(vty, "E1 Input Driver %s%s", drv->name, VTY_NEWLINE); -} - -DEFUN(show_e1drv, - show_e1drv_cmd, - "show e1_driver", - SHOW_STR "Display information about available E1 drivers\n") -{ - struct e1inp_driver *drv; - - llist_for_each_entry(drv, &e1inp_driver_list, list) - e1drv_dump_vty(vty, drv); - - return CMD_SUCCESS; -} - -static void e1line_dump_vty(struct vty *vty, struct e1inp_line *line, - int stats) -{ - vty_out(vty, "E1 Line Number %u, Name %s, Driver %s%s", - line->num, line->name ? line->name : "", - line->driver->name, VTY_NEWLINE); - if (stats) - vty_out_rate_ctr_group(vty, " ", line->rate_ctr); -} - -DEFUN(show_e1line, - show_e1line_cmd, - "show e1_line [line_nr] [stats]", - SHOW_STR "Display information about a E1 line\n" - "E1 Line Number\n") -{ - struct e1inp_line *line; - int stats = 0; - - if (argc >= 1 && strcmp(argv[0], "stats")) { - int num = atoi(argv[0]); - if (argc >= 2) - stats = 1; - llist_for_each_entry(line, &e1inp_line_list, list) { - if (line->num == num) { - e1line_dump_vty(vty, line, stats); - return CMD_SUCCESS; - } - } - return CMD_WARNING; - } - - if (argc >= 1 && !strcmp(argv[0], "stats")) - stats = 1; - - llist_for_each_entry(line, &e1inp_line_list, list) - e1line_dump_vty(vty, line, stats); - - return CMD_SUCCESS; -} - -static void e1ts_dump_vty(struct vty *vty, struct e1inp_ts *ts) -{ - if (ts->type == E1INP_TS_TYPE_NONE) - return; - vty_out(vty, "E1 Timeslot %2u of Line %u is Type %s%s", - ts->num, ts->line->num, e1inp_tstype_name(ts->type), - VTY_NEWLINE); -} - -DEFUN(show_e1ts, - show_e1ts_cmd, - "show e1_timeslot [line_nr] [ts_nr]", - SHOW_STR "Display information about a E1 timeslot\n" - "E1 Line Number\n" "E1 Timeslot Number\n") -{ - struct e1inp_line *line = NULL; - struct e1inp_ts *ts; - int ts_nr; - - if (argc == 0) { - llist_for_each_entry(line, &e1inp_line_list, list) { - for (ts_nr = 0; ts_nr < NUM_E1_TS; ts_nr++) { - ts = &line->ts[ts_nr]; - e1ts_dump_vty(vty, ts); - } - } - return CMD_SUCCESS; - } - if (argc >= 1) { - int num = atoi(argv[0]); - struct e1inp_line *l; - llist_for_each_entry(l, &e1inp_line_list, list) { - if (l->num == num) { - line = l; - break; - } - } - if (!line) { - vty_out(vty, "E1 line %s is invalid%s", - argv[0], VTY_NEWLINE); - return CMD_WARNING; - } - } - if (argc >= 2) { - ts_nr = atoi(argv[1]); - if (ts_nr >= NUM_E1_TS) { - vty_out(vty, "E1 timeslot %s is invalid%s", - argv[1], VTY_NEWLINE); - return CMD_WARNING; - } - ts = &line->ts[ts_nr]; - e1ts_dump_vty(vty, ts); - return CMD_SUCCESS; - } else { - for (ts_nr = 0; ts_nr < NUM_E1_TS; ts_nr++) { - ts = &line->ts[ts_nr]; - e1ts_dump_vty(vty, ts); - } - return CMD_SUCCESS; - } - return CMD_SUCCESS; -} - - -struct cmd_node e1inp_node = { - E1INP_NODE, - "%s(e1_input)#", - 1, -}; - -int e1inp_vty_init(void) -{ - install_element(CONFIG_NODE, &cfg_e1inp_cmd); - install_node(&e1inp_node, e1inp_config_write); - install_element(E1INP_NODE, &cfg_e1_line_driver_cmd); - install_element(E1INP_NODE, &cfg_e1_line_name_cmd); - - install_element_ve(&show_e1drv_cmd); - install_element_ve(&show_e1line_cmd); - install_element_ve(&show_e1ts_cmd); - - return 0; -} diff --git a/openbsc/src/libabis/input/dahdi.c b/openbsc/src/libabis/input/dahdi.c deleted file mode 100644 index 6802a1e85..000000000 --- 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 7f2e75d62..000000000 --- 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 2d6764e25..000000000 --- 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 2934b58ca..000000000 --- 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 dd22028ab..000000000 --- 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 ab92d612f..000000000 --- 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); -} |