soft_uart: allow manually flushing the receive buffer
Change-Id: Id600a2db99e6cb84866cbdcfcd4f78265e067291
Related: OS#4396
diff --git a/include/osmocom/core/soft_uart.h b/include/osmocom/core/soft_uart.h
index df2faac..15cea81 100644
--- a/include/osmocom/core/soft_uart.h
+++ b/include/osmocom/core/soft_uart.h
@@ -92,3 +92,4 @@
int osmo_soft_uart_tx_ubits(struct osmo_soft_uart *suart, ubit_t *ubits, size_t n_ubits);
int osmo_soft_uart_set_status(struct osmo_soft_uart *suart, unsigned int status);
+void osmo_soft_uart_flush_rx(struct osmo_soft_uart *suart);
diff --git a/src/core/libosmocore.map b/src/core/libosmocore.map
index e6a1866..ae8a068 100644
--- a/src/core/libosmocore.map
+++ b/src/core/libosmocore.map
@@ -448,6 +448,7 @@
osmo_soft_uart_rx_ubits;
osmo_soft_uart_tx_ubits;
osmo_soft_uart_set_status;
+osmo_soft_uart_flush_rx;
osmo_stat_item_dec;
osmo_stat_item_flush;
osmo_stat_item_for_each_group;
diff --git a/src/core/soft_uart.c b/src/core/soft_uart.c
index 238425a..400ce5a 100644
--- a/src/core/soft_uart.c
+++ b/src/core/soft_uart.c
@@ -72,8 +72,9 @@
* Receiver
*************************************************************************/
-/* flush the receive buffer + allocate new one, as needed */
-static void suart_flush_rx(struct osmo_soft_uart *suart)
+/*! Flush the receive buffer, passing ownership of the msgb to the .rx_cb().
+ * \param[in] suart soft-UART instance holding the receive buffer. */
+void osmo_soft_uart_flush_rx(struct osmo_soft_uart *suart)
{
if ((suart->rx.msg && msgb_length(suart->rx.msg)) || suart->rx.flags) {
osmo_timer_del(&suart->rx.timer);
@@ -101,7 +102,7 @@
osmo_timer_schedule(&suart->rx.timer, suart->cfg.rx_timeout_ms / 1000,
(suart->cfg.rx_timeout_ms % 1000) * 1000);
} else if (msg_len >= suart->cfg.rx_buf_size || suart->rx.flags) {
- suart_flush_rx(suart);
+ osmo_soft_uart_flush_rx(suart);
}
}
@@ -173,7 +174,7 @@
static void suart_rx_timer_cb(void *data)
{
struct osmo_soft_uart *suart = data;
- suart_flush_rx(suart);
+ osmo_soft_uart_flush_rx(suart);
}
/*! Feed a number of unpacked bits into the soft-UART receiver.
@@ -349,7 +350,7 @@
if (suart->cfg.rx_buf_size > cfg->rx_buf_size ||
suart->cfg.rx_timeout_ms > cfg->rx_timeout_ms) {
- suart_flush_rx(suart);
+ osmo_soft_uart_flush_rx(suart);
}
suart->cfg = *cfg;
@@ -366,7 +367,7 @@
int osmo_soft_uart_set_rx(struct osmo_soft_uart *suart, bool enable)
{
if (!enable && suart->rx.running) {
- suart_flush_rx(suart);
+ osmo_soft_uart_flush_rx(suart);
suart->rx.running = false;
suart->rx.flow_state = SUART_FLOW_ST_IDLE;
} else if (enable && !suart->rx.running) {