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Diffstat (limited to 'src/e1d-fr-test.c')
| -rw-r--r-- | src/e1d-fr-test.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/e1d-fr-test.c b/src/e1d-fr-test.c new file mode 100644 index 0000000..6df7634 --- /dev/null +++ b/src/e1d-fr-test.c @@ -0,0 +1,214 @@ +/* osmo-e1d client program implementing Frame Relay / ITU-T Q.933 Annex A LMI + * This can be used to verify the new "superchannel" support in osmo-e1d for + * transporting (among other things) frame relay. + * + * (C) 2020 by Harald Welte <laforge@osmocom.org> + * + * All Rights Reserved + * + * SPDX-License-Identifier: GPL-2.0+ + * + * 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 <stdint.h> +#include <stdio.h> +#include <unistd.h> +#include <errno.h> +#include <getopt.h> +#include <fcntl.h> +#include <sys/types.h> + +#include <osmocom/core/talloc.h> +#include <osmocom/core/select.h> +#include <osmocom/core/application.h> + +#include <osmocom/e1d/proto_clnt.h> + +#include "frame_relay.h" + + +static void *g_ctx; +static struct osmo_e1dp_client *g_client; +static struct osmo_fd ts_ofd; +struct fr_link *g_link; + + +static int ts_open(uint8_t intf_nr, uint8_t line_nr, uint8_t ts_nr, + enum osmo_e1dp_ts_mode mode) +{ + int rc = osmo_e1dp_client_ts_open(g_client, intf_nr, line_nr, ts_nr, mode, 1600); + if (rc < 0) + fprintf(stderr, "Cannot open e1d timeslot %u:%u:%u\n", intf_nr, line_nr, ts_nr); + return rc; +} + +int fr_tx(struct msgb *msg) +{ + int rc; + + OSMO_ASSERT(g_link == msg->dst); + + printf("Tx: %s\n", msgb_hexdump(msg)); + rc = write(ts_ofd.fd, msgb_data(msg), msgb_length(msg)); + if (rc != msgb_length(msg)) + exit(23); + + msgb_free(msg); + + return rc; +} + +static int dlc_rx_cb(struct fr_dlc *dlc, struct msgb *msg) +{ + printf("Rx DLCI %u: %s\n", dlc->dlci, msgb_hexdump(msg)); + msgb_free(msg); + return 0; +} + +static int ts_fd_cb(struct osmo_fd *ofd, unsigned int what) +{ + int rc; + + if (what & OSMO_FD_READ) { + struct msgb *rx = msgb_alloc(1600, "E1 Rx"); + rc = read(ofd->fd, msgb_data(rx), msgb_tailroom(rx)); + if (rc < 0 && errno != EAGAIN) + exit(3); + else if (rc == 0) + exit(4); + else if (rc > 0) { + msgb_put(rx, rc); + printf("Rx: %s\n", msgb_hexdump(rx)); + fr_rx(g_link, rx); + } + } + +#if 0 + if (what & OSMO_FD_WRITE) { + rc = read(infd, buf, sizeof(buf)); + if (rc < 0 && errno != EAGAIN) + exit(4); + else if (rc == 0) { /* EOF */ + rc = lseek(infd, 0, SEEK_SET); + if (rc < 0) { + perror("rewind input file"); + exit(5); + } + } else if (rc > 0) { + count = rc; + rc = write(ofd->fd, buf, count); + if (rc < 0 && errno != EAGAIN) + exit(4); + } + + } +#endif + + return 0; +} + +static void print_help(void) +{ + printf( + " -h --help This help message\n" + " -p --path PATH Path of the osmo-e1d control socket\n" + " -i --interface <0-255> E1 Interface Number\n" + " -l --line <0-255> E1 Line Number\n" + " -t --timeslot <0-31> E1 Timeslot Number\n" + " -m --mode (RAW|HDLC-FCS) E1 Timeslot Mode\n" + " -r --read FILE Read from FILE instead of STDIN\n" + ); +} + +int main(int argc, char **argv) +{ + int intf_nr = -1, line_nr = -1, ts_nr = -1; + char *path = E1DP_DEFAULT_SOCKET; + int tsfd; + int option_index; + + g_ctx = talloc_named_const(NULL, 0, "g_ctx"); + OSMO_ASSERT(g_ctx); + + osmo_init_logging2(g_ctx, NULL); + + /* FIXME: handle options */ + while (1) { + int c; + static const struct option long_options[] = { + { "help", 0, 0, 'h' }, + { "path", 1, 0, 'p' }, + { "interface", 1, 0, 'i' }, + { "line", 1, 0, 'l' }, + { "timeslot", 1, 0, 't' }, + { 0,0,0,0 } + }; + + c = getopt_long(argc, argv, "hp:i:l:t:m:r:", long_options, &option_index); + if (c == -1) + break; + + switch (c) { + case 'h': + print_help(); + exit(0); + case 'p': + path = optarg; + break; + case 'i': + intf_nr = atoi(optarg); + break; + case 'l': + line_nr = atoi(optarg); + break; + case 't': + ts_nr = atoi(optarg); + break; + } + } + + if (intf_nr == -1 || line_nr == -1 || ts_nr == -1) { + fprintf(stderr, "You must at least specify interface, line and timeslot numbers\n"); + exit(2); + } + + g_client = osmo_e1dp_client_create(g_ctx, path); + if (!g_client) { + fprintf(stderr, "Cannot establish connection to osmo-e1d at %s\n", path); + exit(1); + } + + tsfd = ts_open(intf_nr, line_nr, ts_nr, E1DP_TSMODE_HDLCFCS); + if (tsfd < 0) + exit(2); + + int rc = osmo_e1dp_client_line_config(g_client, intf_nr, line_nr, E1DP_LMODE_SUPERCHANNEL); + if (rc != 0) + exit(3); + + osmo_fd_setup(&ts_ofd, tsfd, OSMO_FD_READ/*|OSMO_FD_WRITE*/, ts_fd_cb, NULL, 0); + osmo_fd_register(&ts_ofd); + + struct fr_network *net = fr_network_alloc(NULL); + g_link = fr_link_alloc(net); + struct fr_dlc *dlc = fr_dlc_alloc(g_link, 23); + dlc->rx_cb = dlc_rx_cb; + + while (1) { + osmo_select_main(0); + } +} + |