mirror of https://gerrit.osmocom.org/libosmocore
137 lines
4.1 KiB
C
137 lines
4.1 KiB
C
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/* (C) 2017 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <osmocom/core/sercomm.h>
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#include <osmocom/core/msgb.h>
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struct osmo_sercomm_inst g_osi;
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static const uint8_t valid_dlci3[] = { 0x7E, 3, 0x03, 'f', 'o', 'o', 0x7E };
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static const uint8_t valid_dlci23[] = { 0x7E, 23, 0x03, '2', '3', 0x7E };
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static const uint8_t valid_dlci23esc[] = { 0x7E, 23, 0x03, 0x7D, '2' ^ (1 << 5), '3', 0x7E };
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static const uint8_t valid_echo[] = { 0x7E, SC_DLCI_ECHO, 0x03, 'e', 'c', 'h', 'o', 0x7E };
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static void rx_ser_data(struct osmo_sercomm_inst *sc, const uint8_t *data, unsigned int len)
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{
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unsigned int i;
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printf("Feeding data into sercomm: %s\n", osmo_hexdump(data, len));
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for (i = 0; i < len; i++) {
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int rc = osmo_sercomm_drv_rx_char(sc, data[i]);
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OSMO_ASSERT(rc == 1);
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}
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}
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static void dlci_rx_cb(struct osmo_sercomm_inst *sercomm, uint8_t dlci, struct msgb *msg)
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{
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printf("%s(): %s\n", __func__, msgb_hexdump(msg));
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}
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static struct msgb *create_mahlzeit_msg(void)
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{
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struct msgb *msg = osmo_sercomm_alloc_msgb(10);
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OSMO_ASSERT(msg);
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msgb_put_u8(msg, 'M');
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msgb_put_u8(msg, 'a');
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msgb_put_u8(msg, 'h');
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msgb_put_u8(msg, 'l');
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msgb_put_u8(msg, 'z');
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msgb_put_u8(msg, 'e');
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msgb_put_u8(msg, 'i');
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msgb_put_u8(msg, 't');
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return msg;
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}
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static void drain_from_uart_side(struct osmo_sercomm_inst *osi)
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{
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uint8_t ch;
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int rc;
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printf("Draining from UART: ");
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while ((rc = osmo_sercomm_drv_pull(osi, &ch) == 1))
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printf("0x%02x ", ch);
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printf("\n");
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}
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static void test_echo(struct osmo_sercomm_inst *osi)
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{
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printf("Testing built-in echo DLCI\n");
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0);
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rx_ser_data(osi, valid_echo, sizeof(valid_echo));
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 1);
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drain_from_uart_side(osi);
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0);
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}
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static void test_sercomm(void)
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{
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int rc;
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uint8_t ch;
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struct msgb *msg;
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printf("Initializing sercomm_inst\n");
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osmo_sercomm_init(&g_osi);
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g_osi.uart_id = 2342;
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printf("Registering callback for invalid DLCI\n");
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rc = osmo_sercomm_register_rx_cb(&g_osi, 255, NULL);
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OSMO_ASSERT(rc == -EINVAL);
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printf("Registering callback for valid DLCI\n");
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rc = osmo_sercomm_register_rx_cb(&g_osi, 23, &dlci_rx_cb);
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OSMO_ASSERT(rc == 0);
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printf("Checking reject of overlod of valid DLCI\n");
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rc = osmo_sercomm_register_rx_cb(&g_osi, 23, NULL);
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OSMO_ASSERT(rc == -EBUSY);
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printf("Checking Rx of incoming msg for valid DLCI\n");
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rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23));
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printf("Checking Rx of incoming msg for unequipped DLCI\n");
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rx_ser_data(&g_osi, valid_dlci3, sizeof(valid_dlci3));
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printf("Checking Rx of incoming msg for valid DLCI\n");
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rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23));
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printf("Checking Rx of incoming msg with escaped char for valid DLCI\n");
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rx_ser_data(&g_osi, valid_dlci23esc, sizeof(valid_dlci23esc));
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printf("Checking that no chars are to be transmitted\n");
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OSMO_ASSERT(osmo_sercomm_drv_pull(&g_osi, &ch) == 0);
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printf("Transmitting msgb through sercomm\n");
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0);
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msg = create_mahlzeit_msg();
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osmo_sercomm_sendmsg(&g_osi, 42, msg);
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 1);
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drain_from_uart_side(&g_osi);
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0);
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test_echo(&g_osi);
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}
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int main(int argc, char **argv)
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{
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test_sercomm();
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}
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