shell: backends: select RING_BUFFER_LARGE when necessary

Depending on the ring buffer configuration, users may encounter the "size too big" assertion in runtime. Let's enable the RING_BUFFER_LARGE when we know that it is required. Signed-off-by: Yong Cong Sin <ycsin@meta.com> Signed-off-by: Yong Cong Sin <yongcong.sin@gmail.com>

Author: ycsin

subsys/shell/backends/Kconfig.backends

@@ -98,6 +98,15 @@ config SHELL_BACKEND_SERIAL_RX_RING_BUFFER_SIZE
  escape sequences). However, if bulk data is transferred it may be
  required to increase it.
 
+config SHELL_BACKEND_SERIAL_NEEDS_LARGE_RING_BUFFER
+bool
+default y if SHELL_BACKEND_SERIAL_TX_RING_BUFFER_SIZE > $(INT16_MAX)
+default y if SHELL_BACKEND_SERIAL_RX_RING_BUFFER_SIZE > $(INT16_MAX)
+select RING_BUFFER_LARGE
+help
+ This is a helper Kconfig to select RING_BUFFER_LARGE when the implementation
+ requires a ring buffer of > 32kB.
+
 if SHELL_BACKEND_SERIAL_API_ASYNC
 
 config SHELL_BACKEND_SERIAL_ASYNC_RX_TIMEOUT
@@ -322,6 +331,14 @@ config SHELL_MQTT_RX_BUF_SIZE
 help
  Buffer size for the MQTT data reception.
 
+config SHELL_MQTT_NEEDS_LARGE_RING_BUFFER
+bool
+default y if SHELL_MQTT_RX_BUF_SIZE > $(INT16_MAX)
+select RING_BUFFER_LARGE
+help
+ This is a helper Kconfig to select RING_BUFFER_LARGE when the implementation
+ requires a ring buffer of > 32kB.
+
 config SHELL_MQTT_TX_BUF_SIZE
 int "TX buffer size"
 range 32 $(UINT16_MAX)