From e6924e525ded73f85c302202384ec71a4b1690a2 Mon Sep 17 00:00:00 2001
From: Akshai M <akshai.kannan@gmail.com>
Date: Sun, 26 Apr 2020 17:31:49 +0530
Subject: [PATCH] drivers/slipdev : Expose to Kconfig

Expose configurations to Kconfig
---
 drivers/Kconfig.net       |  1 +
 drivers/include/slipdev.h |  4 ++++
 drivers/slipdev/Kconfig   | 25 +++++++++++++++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 drivers/slipdev/Kconfig

diff --git a/drivers/Kconfig.net b/drivers/Kconfig.net
index 973d928b92..f2013853ea 100644
--- a/drivers/Kconfig.net
+++ b/drivers/Kconfig.net
@@ -14,6 +14,7 @@ rsource "cc110x/Kconfig"
 rsource "dose/Kconfig"
 rsource "mrf24j40/Kconfig"
 rsource "pn532/Kconfig"
+rsource "slipdev/Kconfig"
 source "$(RIOTCPU)/nrf52/radio/nrf802154/Kconfig"
 endmenu # Network Device Drivers
 
diff --git a/drivers/include/slipdev.h b/drivers/include/slipdev.h
index 787d599072..1e304cd1a6 100644
--- a/drivers/include/slipdev.h
+++ b/drivers/include/slipdev.h
@@ -45,6 +45,10 @@ extern "C" {
  *
  * @pre Needs to be power of two and `<= INT_MAX`
  */
+#ifdef CONFIG_SLIPDEV_BUFSIZE_EXP
+#define CONFIG_SLIPDEV_BUFSIZE (1<<CONFIG_SLIPDEV_BUFSIZE_EXP)
+#endif
+
 #ifndef CONFIG_SLIPDEV_BUFSIZE
 #define CONFIG_SLIPDEV_BUFSIZE (2048U)
 #endif
diff --git a/drivers/slipdev/Kconfig b/drivers/slipdev/Kconfig
new file mode 100644
index 0000000000..68d0204846
--- /dev/null
+++ b/drivers/slipdev/Kconfig
@@ -0,0 +1,25 @@
+# Copyright (c) 2020 Freie Universitaet Berlin
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+#
+menuconfig KCONFIG_MODULE_SLIPDEV
+    bool "Configure SLIPDEV driver"
+    depends on MODULE_SLIPDEV
+    help
+        Configure the SLIPDEV driver using Kconfig.
+
+if KCONFIG_MODULE_SLIPDEV
+
+config SLIPDEV_BUFSIZE_EXP
+    int "Buffer size (as exponent of 2^n)"
+    default 11
+    range 0 31
+    help
+        UART buffer size used for TX and RX buffers.
+        Reduce this value if your expected traffic does
+        not include full IPv6 MTU.
+        Value represents the exponent n of 2^n.
+
+endif # KCONFIG_MODULE_SLIPDEV