diff options
Diffstat (limited to 'tests/sercomm/sercomm_test.c')
| -rw-r--r-- | tests/sercomm/sercomm_test.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/tests/sercomm/sercomm_test.c b/tests/sercomm/sercomm_test.c new file mode 100644 index 00000000..8b1ffdfa --- /dev/null +++ b/tests/sercomm/sercomm_test.c @@ -0,0 +1,136 @@ + +/* (C) 2017 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. + * + */ + +#include <stdio.h> +#include <errno.h> + +#include <osmocom/core/sercomm.h> +#include <osmocom/core/msgb.h> + +struct osmo_sercomm_inst g_osi; + +static const uint8_t valid_dlci3[] = { 0x7E, 3, 0x03, 'f', 'o', 'o', 0x7E }; +static const uint8_t valid_dlci23[] = { 0x7E, 23, 0x03, '2', '3', 0x7E }; +static const uint8_t valid_dlci23esc[] = { 0x7E, 23, 0x03, 0x7D, '2' ^ (1 << 5), '3', 0x7E }; +static const uint8_t valid_echo[] = { 0x7E, SC_DLCI_ECHO, 0x03, 'e', 'c', 'h', 'o', 0x7E }; + +static void rx_ser_data(struct osmo_sercomm_inst *sc, const uint8_t *data, unsigned int len) +{ + unsigned int i; + + printf("Feeding data into sercomm: %s\n", osmo_hexdump(data, len)); + for (i = 0; i < len; i++) { + int rc = osmo_sercomm_drv_rx_char(sc, data[i]); + OSMO_ASSERT(rc == 1); + } +} + + +static void dlci_rx_cb(struct osmo_sercomm_inst *sercomm, uint8_t dlci, struct msgb *msg) +{ + printf("%s(): %s\n", __func__, msgb_hexdump(msg)); +} + +static struct msgb *create_mahlzeit_msg(void) +{ + struct msgb *msg = osmo_sercomm_alloc_msgb(10); + OSMO_ASSERT(msg); + msgb_put_u8(msg, 'M'); + msgb_put_u8(msg, 'a'); + msgb_put_u8(msg, 'h'); + msgb_put_u8(msg, 'l'); + msgb_put_u8(msg, 'z'); + msgb_put_u8(msg, 'e'); + msgb_put_u8(msg, 'i'); + msgb_put_u8(msg, 't'); + return msg; +} + +static void drain_from_uart_side(struct osmo_sercomm_inst *osi) +{ + uint8_t ch; + int rc; + + printf("Draining from UART: "); + while ((rc = osmo_sercomm_drv_pull(osi, &ch) == 1)) + printf("0x%02x ", ch); + printf("\n"); +} + +static void test_echo(struct osmo_sercomm_inst *osi) +{ + printf("Testing built-in echo DLCI\n"); + OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0); + rx_ser_data(osi, valid_echo, sizeof(valid_echo)); + OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 1); + drain_from_uart_side(osi); + OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0); +} + +static void test_sercomm(void) +{ + int rc; + uint8_t ch; + struct msgb *msg; + + printf("Initializing sercomm_inst\n"); + osmo_sercomm_init(&g_osi); + g_osi.uart_id = 2342; + + printf("Registering callback for invalid DLCI\n"); + rc = osmo_sercomm_register_rx_cb(&g_osi, 255, NULL); + OSMO_ASSERT(rc == -EINVAL); + + printf("Registering callback for valid DLCI\n"); + rc = osmo_sercomm_register_rx_cb(&g_osi, 23, &dlci_rx_cb); + OSMO_ASSERT(rc == 0); + + printf("Checking reject of overlod of valid DLCI\n"); + rc = osmo_sercomm_register_rx_cb(&g_osi, 23, NULL); + OSMO_ASSERT(rc == -EBUSY); + + printf("Checking Rx of incoming msg for valid DLCI\n"); + rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23)); + printf("Checking Rx of incoming msg for unequipped DLCI\n"); + rx_ser_data(&g_osi, valid_dlci3, sizeof(valid_dlci3)); + printf("Checking Rx of incoming msg for valid DLCI\n"); + rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23)); + printf("Checking Rx of incoming msg with escaped char for valid DLCI\n"); + rx_ser_data(&g_osi, valid_dlci23esc, sizeof(valid_dlci23esc)); + + printf("Checking that no chars are to be transmitted\n"); + OSMO_ASSERT(osmo_sercomm_drv_pull(&g_osi, &ch) == 0); + + printf("Transmitting msgb through sercomm\n"); + OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0); + msg = create_mahlzeit_msg(); + osmo_sercomm_sendmsg(&g_osi, 42, msg); + OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 1); + drain_from_uart_side(&g_osi); + OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0); + + test_echo(&g_osi); +} + +int main(int argc, char **argv) +{ + test_sercomm(); +} |