Harald Welte | a362ee9 | 2017-05-15 16:39:56 +0200 | [diff] [blame] | 1 | |
| 2 | /* (C) 2017 by Harald Welte <laforge@gnumonks.org> |
| 3 | * |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | #include <errno.h> |
| 24 | |
| 25 | #include <osmocom/core/sercomm.h> |
| 26 | #include <osmocom/core/msgb.h> |
| 27 | |
| 28 | struct osmo_sercomm_inst g_osi; |
| 29 | |
| 30 | static const uint8_t valid_dlci3[] = { 0x7E, 3, 0x03, 'f', 'o', 'o', 0x7E }; |
| 31 | static const uint8_t valid_dlci23[] = { 0x7E, 23, 0x03, '2', '3', 0x7E }; |
| 32 | static const uint8_t valid_dlci23esc[] = { 0x7E, 23, 0x03, 0x7D, '2' ^ (1 << 5), '3', 0x7E }; |
| 33 | static const uint8_t valid_echo[] = { 0x7E, SC_DLCI_ECHO, 0x03, 'e', 'c', 'h', 'o', 0x7E }; |
| 34 | |
| 35 | static void rx_ser_data(struct osmo_sercomm_inst *sc, const uint8_t *data, unsigned int len) |
| 36 | { |
| 37 | unsigned int i; |
| 38 | |
| 39 | printf("Feeding data into sercomm: %s\n", osmo_hexdump(data, len)); |
| 40 | for (i = 0; i < len; i++) { |
| 41 | int rc = osmo_sercomm_drv_rx_char(sc, data[i]); |
| 42 | OSMO_ASSERT(rc == 1); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | |
| 47 | static void dlci_rx_cb(struct osmo_sercomm_inst *sercomm, uint8_t dlci, struct msgb *msg) |
| 48 | { |
| 49 | printf("%s(): %s\n", __func__, msgb_hexdump(msg)); |
| 50 | } |
| 51 | |
| 52 | static struct msgb *create_mahlzeit_msg(void) |
| 53 | { |
| 54 | struct msgb *msg = osmo_sercomm_alloc_msgb(10); |
| 55 | OSMO_ASSERT(msg); |
| 56 | msgb_put_u8(msg, 'M'); |
| 57 | msgb_put_u8(msg, 'a'); |
| 58 | msgb_put_u8(msg, 'h'); |
| 59 | msgb_put_u8(msg, 'l'); |
| 60 | msgb_put_u8(msg, 'z'); |
| 61 | msgb_put_u8(msg, 'e'); |
| 62 | msgb_put_u8(msg, 'i'); |
| 63 | msgb_put_u8(msg, 't'); |
| 64 | return msg; |
| 65 | } |
| 66 | |
| 67 | static void drain_from_uart_side(struct osmo_sercomm_inst *osi) |
| 68 | { |
| 69 | uint8_t ch; |
| 70 | int rc; |
| 71 | |
| 72 | printf("Draining from UART: "); |
| 73 | while ((rc = osmo_sercomm_drv_pull(osi, &ch) == 1)) |
| 74 | printf("0x%02x ", ch); |
| 75 | printf("\n"); |
| 76 | } |
| 77 | |
| 78 | static void test_echo(struct osmo_sercomm_inst *osi) |
| 79 | { |
| 80 | printf("Testing built-in echo DLCI\n"); |
| 81 | OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0); |
| 82 | rx_ser_data(osi, valid_echo, sizeof(valid_echo)); |
| 83 | OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 1); |
| 84 | drain_from_uart_side(osi); |
| 85 | OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0); |
| 86 | } |
| 87 | |
| 88 | static void test_sercomm(void) |
| 89 | { |
| 90 | int rc; |
| 91 | uint8_t ch; |
| 92 | struct msgb *msg; |
| 93 | |
| 94 | printf("Initializing sercomm_inst\n"); |
| 95 | osmo_sercomm_init(&g_osi); |
| 96 | g_osi.uart_id = 2342; |
| 97 | |
| 98 | printf("Registering callback for invalid DLCI\n"); |
| 99 | rc = osmo_sercomm_register_rx_cb(&g_osi, 255, NULL); |
| 100 | OSMO_ASSERT(rc == -EINVAL); |
| 101 | |
| 102 | printf("Registering callback for valid DLCI\n"); |
| 103 | rc = osmo_sercomm_register_rx_cb(&g_osi, 23, &dlci_rx_cb); |
| 104 | OSMO_ASSERT(rc == 0); |
| 105 | |
| 106 | printf("Checking reject of overlod of valid DLCI\n"); |
| 107 | rc = osmo_sercomm_register_rx_cb(&g_osi, 23, NULL); |
| 108 | OSMO_ASSERT(rc == -EBUSY); |
| 109 | |
| 110 | printf("Checking Rx of incoming msg for valid DLCI\n"); |
| 111 | rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23)); |
| 112 | printf("Checking Rx of incoming msg for unequipped DLCI\n"); |
| 113 | rx_ser_data(&g_osi, valid_dlci3, sizeof(valid_dlci3)); |
| 114 | printf("Checking Rx of incoming msg for valid DLCI\n"); |
| 115 | rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23)); |
| 116 | printf("Checking Rx of incoming msg with escaped char for valid DLCI\n"); |
| 117 | rx_ser_data(&g_osi, valid_dlci23esc, sizeof(valid_dlci23esc)); |
| 118 | |
| 119 | printf("Checking that no chars are to be transmitted\n"); |
| 120 | OSMO_ASSERT(osmo_sercomm_drv_pull(&g_osi, &ch) == 0); |
| 121 | |
| 122 | printf("Transmitting msgb through sercomm\n"); |
| 123 | OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0); |
| 124 | msg = create_mahlzeit_msg(); |
| 125 | osmo_sercomm_sendmsg(&g_osi, 42, msg); |
| 126 | OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 1); |
| 127 | drain_from_uart_side(&g_osi); |
| 128 | OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0); |
| 129 | |
| 130 | test_echo(&g_osi); |
| 131 | } |
| 132 | |
| 133 | int main(int argc, char **argv) |
| 134 | { |
| 135 | test_sercomm(); |
| 136 | } |