From 06cc8254314e7fca34d8f6b59a96fa35cd355073 Mon Sep 17 00:00:00 2001
From: Dirk Ziegelmeier <dirk@ziegelmeier.net>
Date: Mon, 22 Oct 2018 20:53:37 +0200
Subject: [PATCH] Whitespace cleanup lwIP

---
 src/api/tcpip.c                        |  2 +-
 src/apps/altcp_tls/altcp_tls_mbedtls.c |  2 +-
 src/apps/http/fsdata.c                 |  1 -
 src/apps/http/http_client.c            |  8 +++----
 src/apps/http/httpd.c                  |  2 +-
 src/apps/smtp/smtp.c                   | 12 +++++-----
 src/core/altcp.c                       |  6 ++---
 src/core/ipv6/ip6.c                    |  2 +-
 src/core/ipv6/mld6.c                   |  2 +-
 src/core/ipv6/nd6.c                    |  6 ++---
 src/core/netif.c                       |  2 +-
 src/core/stats.c                       |  1 -
 src/core/sys.c                         | 12 +++++-----
 src/core/tcp_out.c                     |  2 +-
 src/core/timeouts.c                    |  4 ++--
 src/core/udp.c                         |  8 +++----
 src/include/compat/posix/net/if.h      | 22 +++++++++---------
 src/include/lwip/api.h                 | 16 ++++++-------
 src/include/lwip/apps/fs.h             | 28 +++++++++++-----------
 src/include/lwip/apps/http_client.h    | 10 ++++----
 src/include/lwip/apps/httpd_opts.h     |  2 +-
 src/include/lwip/apps/mdns_opts.h      |  1 -
 src/include/lwip/apps/mqtt.h           |  4 ++--
 src/include/lwip/apps/smtp_opts.h      |  7 +++---
 src/include/lwip/apps/snmp_core.h      |  2 +-
 src/include/lwip/apps/tftp_opts.h      |  2 +-
 src/include/lwip/arch.h                |  4 ++--
 src/include/lwip/dhcp.h                |  2 +-
 src/include/lwip/igmp.h                |  2 +-
 src/include/lwip/inet_chksum.h         |  1 -
 src/include/lwip/ip.h                  |  2 --
 src/include/lwip/ip4.h                 |  2 --
 src/include/lwip/ip_addr.h             |  2 +-
 src/include/lwip/mld6.h                |  2 +-
 src/include/lwip/pbuf.h                |  2 +-
 src/include/lwip/prot/ieee.h           |  2 +-
 src/include/lwip/sys.h                 | 26 ++++++++++-----------
 src/include/netif/lowpan6_ble.h        |  6 ++---
 src/include/netif/lowpan6_opts.h       |  2 +-
 src/include/netif/slipif.h             |  1 -
 src/netif/bridgeif_fdb.c               |  6 ++---
 src/netif/lowpan6_ble.c                | 32 +++++++++++++-------------
 src/netif/lowpan6_common.c             |  2 +-
 43 files changed, 126 insertions(+), 136 deletions(-)

diff --git a/src/api/tcpip.c b/src/api/tcpip.c
index 743553a5..b0382e83 100644
--- a/src/api/tcpip.c
+++ b/src/api/tcpip.c
@@ -519,7 +519,7 @@ tcpip_api_call(tcpip_api_call_fn fn, struct tcpip_api_call_data *call)
  * e.g. the message is allocated once and posted several times from an IRQ
  * using tcpip_callbackmsg_trycallback().
  * Example usage: Trigger execution of an ethernet IRQ DPC routine in lwIP thread context.
- * 
+ *
  * @param function the function to call
  * @param ctx parameter passed to function
  * @return a struct pointer to pass to tcpip_callbackmsg_trycallback().
diff --git a/src/apps/altcp_tls/altcp_tls_mbedtls.c b/src/apps/altcp_tls/altcp_tls_mbedtls.c
index d241a061..2e1e23fe 100644
--- a/src/apps/altcp_tls/altcp_tls_mbedtls.c
+++ b/src/apps/altcp_tls/altcp_tls_mbedtls.c
@@ -880,7 +880,7 @@ altcp_tls_free_config(struct altcp_tls_config *conf)
   }
   if (conf->ca) {
     mbedtls_x509_crt_free(conf->ca);
-  }  
+  }
   altcp_mbedtls_free_config(conf);
 }
 
diff --git a/src/apps/http/fsdata.c b/src/apps/http/fsdata.c
index ab9da7e1..50bc87ac 100644
--- a/src/apps/http/fsdata.c
+++ b/src/apps/http/fsdata.c
@@ -334,4 +334,3 @@ FS_FILE_FLAGS_HEADER_INCLUDED | FS_FILE_FLAGS_HEADER_PERSISTENT,
 
 #define FS_ROOT file__index_html
 #define FS_NUMFILES 3
-
diff --git a/src/apps/http/http_client.c b/src/apps/http/http_client.c
index 9198c89d..5b4054fa 100644
--- a/src/apps/http/http_client.c
+++ b/src/apps/http/http_client.c
@@ -614,7 +614,7 @@ httpc_init_connection_addr(httpc_state_t **connection, const httpc_connection_t
 }
 
 /**
- * @ingroup httpc 
+ * @ingroup httpc
  * HTTP client API: get a file by passing server IP address
  *
  * @param server_addr IP address of the server to connect
@@ -659,7 +659,7 @@ httpc_get_file(const ip_addr_t* server_addr, u16_t port, const char* uri, const
 }
 
 /**
- * @ingroup httpc 
+ * @ingroup httpc
  * HTTP client API: get a file by passing server name as string (DNS name or IP address string)
  *
  * @param server_name server name as string (DNS name or IP address string)
@@ -801,7 +801,7 @@ httpc_fs_tcp_recv(void *arg, struct altcp_pcb *pcb, struct pbuf *p, err_t err)
 }
 
 /**
- * @ingroup httpc 
+ * @ingroup httpc
  * HTTP client API: get a file to disk by passing server IP address
  *
  * @param server_addr IP address of the server to connect
@@ -853,7 +853,7 @@ httpc_get_file_to_disk(const ip_addr_t* server_addr, u16_t port, const char* uri
 }
 
 /**
- * @ingroup httpc 
+ * @ingroup httpc
  * HTTP client API: get a file to disk by passing server name as string (DNS name or IP address string)
  *
  * @param server_name server name as string (DNS name or IP address string)
diff --git a/src/apps/http/httpd.c b/src/apps/http/httpd.c
index ccc9ba72..6e53b484 100644
--- a/src/apps/http/httpd.c
+++ b/src/apps/http/httpd.c
@@ -233,7 +233,7 @@ struct http_ssi_state {
 
 struct http_ssi_tag_description {
   const char *lead_in;
-  const char *lead_out; 
+  const char *lead_out;
 };
 
 #endif /* LWIP_HTTPD_SSI */
diff --git a/src/apps/smtp/smtp.c b/src/apps/smtp/smtp.c
index 8a87533a..aa8380d6 100644
--- a/src/apps/smtp/smtp.c
+++ b/src/apps/smtp/smtp.c
@@ -1,12 +1,12 @@
 /**
  * @file
  * SMTP client module
- * 
+ *
  * Author: Simon Goldschmidt
  *
  * @defgroup smtp SMTP client
  * @ingroup apps
- * 
+ *
  * This is simple SMTP client for raw API.
  * It is a minimal implementation of SMTP as specified in RFC 5321.
  *
@@ -29,7 +29,7 @@
 
  * When using from any other thread than the tcpip_thread (for NO_SYS==0), use
  * smtp_send_mail_int()!
- * 
+ *
  * SMTP_BODYDH usage:
 @code{.c}
  int my_smtp_bodydh_fn(void *arg, struct smtp_bodydh *bdh)
@@ -42,11 +42,11 @@
     ++bdh->state;
     return BDH_WORKING;
  }
- 
- smtp_send_mail_bodycback("sender", "recipient", "subject", 
+
+ smtp_send_mail_bodycback("sender", "recipient", "subject",
                 my_smtp_bodydh_fn, my_smtp_result_fn, some_argument);
 @endcode
- * 
+ *
  * @todo:
  * - attachments (the main difficulty here is streaming base64-encoding to
  *   prevent having to allocate a buffer for the whole encoded file at once)
diff --git a/src/core/altcp.c b/src/core/altcp.c
index d46d6cdb..1156307a 100644
--- a/src/core/altcp.c
+++ b/src/core/altcp.c
@@ -158,7 +158,7 @@ altcp_free(struct altcp_pcb *conn)
 
 /**
  * @ingroup altcp
- * altcp_new_ip6: @ref altcp_new for IPv6 
+ * altcp_new_ip6: @ref altcp_new for IPv6
  */
 struct altcp_pcb *
 altcp_new_ip6(altcp_allocator_t *allocator)
@@ -166,9 +166,9 @@ altcp_new_ip6(altcp_allocator_t *allocator)
   return altcp_new_ip_type(allocator, IPADDR_TYPE_V6);
 }
 
-/** 
+/**
  * @ingroup altcp
- * altcp_new: @ref altcp_new for IPv4 
+ * altcp_new: @ref altcp_new for IPv4
  */
 struct altcp_pcb *
 altcp_new(altcp_allocator_t *allocator)
diff --git a/src/core/ipv6/ip6.c b/src/core/ipv6/ip6.c
index eda11dc8..afa69f1b 100644
--- a/src/core/ipv6/ip6.c
+++ b/src/core/ipv6/ip6.c
@@ -1047,7 +1047,7 @@ options_done:
   LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: p->len %"U16_F" p->tot_len %"U16_F"\n", p->len, p->tot_len));
 
   ip_data.current_ip_header_tot_len = hlen_tot;
-  
+
 #if LWIP_RAW
   /* p points to IPv6 header again for raw_input. */
   pbuf_add_header_force(p, hlen_tot);
diff --git a/src/core/ipv6/mld6.c b/src/core/ipv6/mld6.c
index 6387d468..fb4e9ef4 100644
--- a/src/core/ipv6/mld6.c
+++ b/src/core/ipv6/mld6.c
@@ -6,7 +6,7 @@
  * @ingroup ip6
  * Multicast listener discovery for IPv6. Aims to be compliant with RFC 2710.
  * No support for MLDv2.\n
- * Note: The allnodes (ff01::1, ff02::1) group is assumed be received by your 
+ * Note: The allnodes (ff01::1, ff02::1) group is assumed be received by your
  * netif since it must always be received for correct IPv6 operation (e.g. SLAAC).
  * Ensure the netif filters are configured accordingly!\n
  * The netif flags also need NETIF_FLAG_MLD6 flag set to enable MLD6 on a
diff --git a/src/core/ipv6/nd6.c b/src/core/ipv6/nd6.c
index db0c132e..75899c65 100644
--- a/src/core/ipv6/nd6.c
+++ b/src/core/ipv6/nd6.c
@@ -1835,9 +1835,9 @@ nd6_new_router(const ip6_addr_t *router_addr, struct netif *netif)
   for (router_index = LWIP_ND6_NUM_ROUTERS - 1; router_index >= 0; router_index--) {
     /* check if router already exists (this is a special case for 2 netifs on the same subnet
        - e.g. wifi and cable) */
-    if(default_router_list[router_index].neighbor_entry == &(neighbor_cache[neighbor_index])){ 
-      return router_index; 
-    } 
+    if(default_router_list[router_index].neighbor_entry == &(neighbor_cache[neighbor_index])){
+      return router_index;
+    }
     if (default_router_list[router_index].neighbor_entry == NULL) {
       /* remember lowest free index to create a new entry */
       free_router_index = router_index;
diff --git a/src/core/netif.c b/src/core/netif.c
index 56967770..4e1dcfcd 100644
--- a/src/core/netif.c
+++ b/src/core/netif.c
@@ -895,7 +895,7 @@ netif_issue_reports(struct netif *netif, u8_t report_type)
 #if LWIP_ARP && !LWIP_ACD
     /* For Ethernet network interfaces:
      * we would like to send a "gratuitous ARP".
-     * Only needs to be done here if ACD isn't configured. 
+     * Only needs to be done here if ACD isn't configured.
      */
     if (netif->flags & (NETIF_FLAG_ETHARP)) {
       etharp_gratuitous(netif);
diff --git a/src/core/stats.c b/src/core/stats.c
index 34e9b270..95445ec9 100644
--- a/src/core/stats.c
+++ b/src/core/stats.c
@@ -166,4 +166,3 @@ stats_display(void)
 #endif /* LWIP_STATS_DISPLAY */
 
 #endif /* LWIP_STATS */
-
diff --git a/src/core/sys.c b/src/core/sys.c
index 5f08352b..69d7197a 100644
--- a/src/core/sys.c
+++ b/src/core/sys.c
@@ -45,30 +45,30 @@
  * No need to implement functions in this section in NO_SYS mode.
  * The OS-specific code should be implemented in arch/sys_arch.h
  * and sys_arch.c of your port.
- * 
+ *
  * The operating system emulation layer provides a common interface
  * between the lwIP code and the underlying operating system kernel. The
  * general idea is that porting lwIP to new architectures requires only
  * small changes to a few header files and a new sys_arch
  * implementation. It is also possible to do a sys_arch implementation
  * that does not rely on any underlying operating system.
- * 
+ *
  * The sys_arch provides semaphores, mailboxes and mutexes to lwIP. For the full
  * lwIP functionality, multiple threads support can be implemented in the
  * sys_arch, but this is not required for the basic lwIP
  * functionality. Timer scheduling is implemented in lwIP, but can be implemented
  * by the sys_arch port (LWIP_TIMERS_CUSTOM==1).
- * 
+ *
  * In addition to the source file providing the functionality of sys_arch,
  * the OS emulation layer must provide several header files defining
  * macros used throughout lwip.  The files required and the macros they
  * must define are listed below the sys_arch description.
- * 
+ *
  * Since lwIP 1.4.0, semaphore, mutexes and mailbox functions are prototyped in a way that
  * allows both using pointers or actual OS structures to be used. This way, memory
  * required for such types can be either allocated in place (globally or on the
  * stack) or on the heap (allocated internally in the "*_new()" functions).
- * 
+ *
  * Note:
  * -----
  * Be careful with using mem_malloc() in sys_arch. When malloc() refers to
@@ -96,7 +96,7 @@
  * Mailboxes should be implemented as a queue which allows multiple messages
  * to be posted (implementing as a rendez-vous point where only one message can be
  * posted at a time can have a highly negative impact on performance). A message
- * in a mailbox is just a pointer, nothing more. 
+ * in a mailbox is just a pointer, nothing more.
  *
  * @defgroup sys_time Time
  * @ingroup sys_layer
diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
index 724df109..a00ce23f 100644
--- a/src/core/tcp_out.c
+++ b/src/core/tcp_out.c
@@ -355,7 +355,7 @@ tcp_write_checks(struct tcp_pcb *pcb, u16_t len)
  * it can send them more efficiently by combining them together).
  * To prompt the system to send data now, call tcp_output() after
  * calling tcp_write().
- * 
+ *
  * This function enqueues the data pointed to by the argument dataptr. The length of
  * the data is passed as the len parameter. The apiflags can be one or more of:
  * - TCP_WRITE_FLAG_COPY: indicates whether the new memory should be allocated
diff --git a/src/core/timeouts.c b/src/core/timeouts.c
index 81e8450d..91657eb7 100644
--- a/src/core/timeouts.c
+++ b/src/core/timeouts.c
@@ -241,7 +241,7 @@ lwip_cyclic_timer(void *arg)
   cyclic->handler();
 
   now = sys_now();
-  next_timeout_time = (u32_t)(current_timeout_due_time + cyclic->interval_ms);  /* overflow handled by TIME_LESS_THAN macro */ 
+  next_timeout_time = (u32_t)(current_timeout_due_time + cyclic->interval_ms);  /* overflow handled by TIME_LESS_THAN macro */
   if (TIME_LESS_THAN(next_timeout_time, now)) {
     /* timer would immediately expire again -> "overload" -> restart without any correction */
 #if LWIP_DEBUG_TIMERNAMES
@@ -296,7 +296,7 @@ sys_timeout(u32_t msecs, sys_timeout_handler handler, void *arg)
 
   LWIP_ASSERT("Timeout time too long, max is LWIP_UINT32_MAX/4 msecs", msecs <= (LWIP_UINT32_MAX / 4));
 
-  next_timeout_time = (u32_t)(sys_now() + msecs); /* overflow handled by TIME_LESS_THAN macro */ 
+  next_timeout_time = (u32_t)(sys_now() + msecs); /* overflow handled by TIME_LESS_THAN macro */
 
 #if LWIP_DEBUG_TIMERNAMES
   sys_timeout_abs(next_timeout_time, handler, arg, handler_name);
diff --git a/src/core/udp.c b/src/core/udp.c
index 9d2cb4af..7c25912e 100644
--- a/src/core/udp.c
+++ b/src/core/udp.c
@@ -911,7 +911,7 @@ udp_sendto_if_src_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *d
 /**
  * @ingroup udp_raw
  * Bind an UDP PCB.
- * 
+ *
  * @param pcb UDP PCB to be bound with a local address ipaddr and port.
  * @param ipaddr local IP address to bind with. Use IP_ANY_TYPE to
  * bind to all local interfaces.
@@ -1168,8 +1168,8 @@ udp_recv(struct udp_pcb *pcb, udp_recv_fn recv, void *recv_arg)
 
 /**
  * @ingroup udp_raw
- * Removes and deallocates the pcb.  
- * 
+ * Removes and deallocates the pcb.
+ *
  * @param pcb UDP PCB to be removed. The PCB is removed from the list of
  * UDP PCB's and the data structure is freed from memory.
  *
@@ -1242,7 +1242,7 @@ udp_new(void)
  * Create a UDP PCB for specific IP type.
  * The pcb is not active until it has either been bound to a local address
  * or connected to a remote address.
- * 
+ *
  * @param type IP address type, see @ref lwip_ip_addr_type definitions.
  * If you want to listen to IPv4 and IPv6 (dual-stack) packets,
  * supply @ref IPADDR_TYPE_ANY as argument and bind to @ref IP_ANY_TYPE.
diff --git a/src/include/compat/posix/net/if.h b/src/include/compat/posix/net/if.h
index 6b8e63a5..8b8e4819 100644
--- a/src/include/compat/posix/net/if.h
+++ b/src/include/compat/posix/net/if.h
@@ -7,7 +7,7 @@
  * Copyright (c) 2017 Joel Cunningham, Garmin International, Inc. <joel.cunningham@garmin.com>
  * All rights reserved.
  *
- * Redistribution and use in source and binary forms, with or without modification, 
+ * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright notice,
@@ -16,17 +16,17 @@
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission. 
+ *    derived from this software without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  * OF SUCH DAMAGE.
  *
  * This file is part of the lwIP TCP/IP stack.
diff --git a/src/include/lwip/api.h b/src/include/lwip/api.h
index c2afaf26..739f8be5 100644
--- a/src/include/lwip/api.h
+++ b/src/include/lwip/api.h
@@ -153,27 +153,27 @@ enum netconn_state {
 };
 
 /** Used to inform the callback function about changes
- * 
+ *
  * Event explanation:
- * 
+ *
  * In the netconn implementation, there are three ways to block a client:
- * 
+ *
  * - accept mbox (sys_arch_mbox_fetch(&conn->acceptmbox, &accept_ptr, 0); in netconn_accept())
  * - receive mbox (sys_arch_mbox_fetch(&conn->recvmbox, &buf, 0); in netconn_recv_data())
  * - send queue is full (sys_arch_sem_wait(LWIP_API_MSG_SEM(msg), 0); in lwip_netconn_do_write())
- * 
+ *
  * The events have to be seen as events signaling the state of these mboxes/semaphores. For non-blocking
  * connections, you need to know in advance whether a call to a netconn function call would block or not,
  * and these events tell you about that.
- * 
- * RCVPLUS events say: Safe to perform a potentially blocking call call once more. 
+ *
+ * RCVPLUS events say: Safe to perform a potentially blocking call call once more.
  * They are counted in sockets - three RCVPLUS events for accept mbox means you are safe
  * to call netconn_accept 3 times without being blocked.
  * Same thing for receive mbox.
- * 
+ *
  * RCVMINUS events say: Your call to to a possibly blocking function is "acknowledged".
  * Socket implementation decrements the counter.
- * 
+ *
  * For TX, there is no need to count, its merely a flag. SENDPLUS means you may send something.
  * SENDPLUS occurs when enough data was delivered to peer so netconn_send() can be called again.
  * A SENDMINUS event occurs when the next call to a netconn_send() would be blocking.
diff --git a/src/include/lwip/apps/fs.h b/src/include/lwip/apps/fs.h
index 67b9a60a..5be77c1b 100644
--- a/src/include/lwip/apps/fs.h
+++ b/src/include/lwip/apps/fs.h
@@ -1,8 +1,8 @@
 /*
  * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
- * All rights reserved. 
- * 
- * Redistribution and use in source and binary forms, with or without modification, 
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright notice,
@@ -11,21 +11,21 @@
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission. 
+ *    derived from this software without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  * OF SUCH DAMAGE.
  *
  * This file is part of the lwIP TCP/IP stack.
- * 
+ *
  * Author: Adam Dunkels <adam@sics.se>
  *
  */
diff --git a/src/include/lwip/apps/http_client.h b/src/include/lwip/apps/http_client.h
index 8a063083..d39e1bf8 100644
--- a/src/include/lwip/apps/http_client.h
+++ b/src/include/lwip/apps/http_client.h
@@ -52,7 +52,7 @@ extern "C" {
 #endif
 
 /**
- * @ingroup httpc 
+ * @ingroup httpc
  * HTTPC_HAVE_FILE_IO: define this to 1 to have functions dowloading directly
  * to disk via fopen/fwrite.
  * These functions are example implementations of the interface only.
@@ -62,13 +62,13 @@ extern "C" {
 #endif
 
 /**
- * @ingroup httpc 
+ * @ingroup httpc
  * The default TCP port used for HTTP
  */
 #define HTTP_DEFAULT_PORT         LWIP_IANA_PORT_HTTP
 
 /**
- * @ingroup httpc 
+ * @ingroup httpc
  * HTTP client result codes
  */
 typedef enum ehttpc_result {
@@ -97,7 +97,7 @@ typedef enum ehttpc_result {
 typedef struct _httpc_state httpc_state_t;
 
 /**
- * @ingroup httpc 
+ * @ingroup httpc
  * Prototype of a http client callback function
  *
  * @param arg argument specified when initiating the request
@@ -110,7 +110,7 @@ typedef struct _httpc_state httpc_state_t;
 typedef void (*httpc_result_fn)(void *arg, httpc_result_t httpc_result, u32_t rx_content_len, u32_t srv_res, err_t err);
 
 /**
- * @ingroup httpc 
+ * @ingroup httpc
  * Prototype of http client callback: called when the headers are received
  *
  * @param connection http client connection
diff --git a/src/include/lwip/apps/httpd_opts.h b/src/include/lwip/apps/httpd_opts.h
index 8723961f..dd0c075d 100644
--- a/src/include/lwip/apps/httpd_opts.h
+++ b/src/include/lwip/apps/httpd_opts.h
@@ -175,7 +175,7 @@
 #define HTTPD_DEBUG         LWIP_DBG_OFF
 #endif
 
-/** Set this to 1 to use a memp pool for allocating 
+/** Set this to 1 to use a memp pool for allocating
  * struct http_state instead of the heap.
  * If enabled, you'll need to define MEMP_NUM_PARALLEL_HTTPD_CONNS
  * (and MEMP_NUM_PARALLEL_HTTPD_SSI_CONNS for SSI) to set the size of
diff --git a/src/include/lwip/apps/mdns_opts.h b/src/include/lwip/apps/mdns_opts.h
index 45f2c50c..ac232200 100644
--- a/src/include/lwip/apps/mdns_opts.h
+++ b/src/include/lwip/apps/mdns_opts.h
@@ -78,4 +78,3 @@
  */
 
 #endif /* LWIP_HDR_APPS_MDNS_OPTS_H */
-
diff --git a/src/include/lwip/apps/mqtt.h b/src/include/lwip/apps/mqtt.h
index c2bb2288..f099812d 100644
--- a/src/include/lwip/apps/mqtt.h
+++ b/src/include/lwip/apps/mqtt.h
@@ -134,7 +134,7 @@ enum {
   MQTT_DATA_FLAG_LAST = 1
 };
 
-/** 
+/**
  * @ingroup mqtt
  * Function prototype for MQTT incoming publish data callback function. Called when data
  * arrives to a subscribed topic @see mqtt_subscribe
@@ -149,7 +149,7 @@ enum {
 typedef void (*mqtt_incoming_data_cb_t)(void *arg, const u8_t *data, u16_t len, u8_t flags);
 
 
-/** 
+/**
  * @ingroup mqtt
  * Function prototype for MQTT incoming publish function. Called when an incoming publish
  * arrives to a subscribed topic @see mqtt_subscribe
diff --git a/src/include/lwip/apps/smtp_opts.h b/src/include/lwip/apps/smtp_opts.h
index bc743f67..c588fb9d 100644
--- a/src/include/lwip/apps/smtp_opts.h
+++ b/src/include/lwip/apps/smtp_opts.h
@@ -6,14 +6,14 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-    
+
 /**
  * @defgroup smtp_opts Options
  * @ingroup smtp
- * 
+ *
  * @{
  */
-    
+
 /** Set this to 1 to enable data handler callback on BODY */
 #ifndef SMTP_BODYDH
 #define SMTP_BODYDH             0
@@ -78,4 +78,3 @@ extern "C" {
 #endif
 
 #endif /* SMTP_OPTS_H */
-
diff --git a/src/include/lwip/apps/snmp_core.h b/src/include/lwip/apps/snmp_core.h
index 6021c722..5a8a49f8 100644
--- a/src/include/lwip/apps/snmp_core.h
+++ b/src/include/lwip/apps/snmp_core.h
@@ -101,7 +101,7 @@ extern "C" {
 /** error codes predefined by SNMP prot. */
 typedef enum {
   SNMP_ERR_NOERROR             = 0,
-/* 
+/*
 outdated v1 error codes. do not use anmore!
 #define SNMP_ERR_NOSUCHNAME 2  use SNMP_ERR_NOSUCHINSTANCE instead
 #define SNMP_ERR_BADVALUE   3  use SNMP_ERR_WRONGTYPE,SNMP_ERR_WRONGLENGTH,SNMP_ERR_WRONGENCODING or SNMP_ERR_WRONGVALUE instead
diff --git a/src/include/lwip/apps/tftp_opts.h b/src/include/lwip/apps/tftp_opts.h
index 624f103d..509fabd6 100644
--- a/src/include/lwip/apps/tftp_opts.h
+++ b/src/include/lwip/apps/tftp_opts.h
@@ -11,7 +11,7 @@
  *
  */
 
-/* 
+/*
  * Redistribution and use in source and binary forms, with or without
  * modification,are permitted provided that the following conditions are met:
  *
diff --git a/src/include/lwip/arch.h b/src/include/lwip/arch.h
index f5164cc6..29494da1 100644
--- a/src/include/lwip/arch.h
+++ b/src/include/lwip/arch.h
@@ -74,7 +74,7 @@
 
 /** Platform specific diagnostic output.\n
  * Note the default implementation pulls in printf, which may
- * in turn pull in a lot of standard libary code. In resource-constrained 
+ * in turn pull in a lot of standard libary code. In resource-constrained
  * systems, this should be defined to something less resource-consuming.
  */
 #ifndef LWIP_PLATFORM_DIAG
@@ -85,7 +85,7 @@
 
 /** Platform specific assertion handling.\n
  * Note the default implementation pulls in printf, fflush and abort, which may
- * in turn pull in a lot of standard libary code. In resource-constrained 
+ * in turn pull in a lot of standard libary code. In resource-constrained
  * systems, this should be defined to something less resource-consuming.
  */
 #ifndef LWIP_PLATFORM_ASSERT
diff --git a/src/include/lwip/dhcp.h b/src/include/lwip/dhcp.h
index 95c62bff..49c266e8 100644
--- a/src/include/lwip/dhcp.h
+++ b/src/include/lwip/dhcp.h
@@ -78,7 +78,7 @@ struct dhcp
   u8_t state;
   /** retries of current request */
   u8_t tries;
-  
+
   u8_t subnet_mask_given;
 
   u16_t request_timeout; /* #ticks with period DHCP_FINE_TIMER_SECS for request timeout */
diff --git a/src/include/lwip/igmp.h b/src/include/lwip/igmp.h
index ffd80e68..0a16db03 100644
--- a/src/include/lwip/igmp.h
+++ b/src/include/lwip/igmp.h
@@ -99,7 +99,7 @@ err_t  igmp_leavegroup(const ip4_addr_t *ifaddr, const ip4_addr_t *groupaddr);
 err_t  igmp_leavegroup_netif(struct netif *netif, const ip4_addr_t *groupaddr);
 void   igmp_tmr(void);
 
-/** @ingroup igmp 
+/** @ingroup igmp
  * Get list head of IGMP groups for netif.
  * Note: The allsystems group IP is contained in the list as first entry.
  * @see @ref netif_set_igmp_mac_filter()
diff --git a/src/include/lwip/inet_chksum.h b/src/include/lwip/inet_chksum.h
index 76893ef5..33296d28 100644
--- a/src/include/lwip/inet_chksum.h
+++ b/src/include/lwip/inet_chksum.h
@@ -102,4 +102,3 @@ u16_t ip_chksum_pseudo_partial(struct pbuf *p, u8_t proto, u16_t proto_len,
 #endif
 
 #endif /* LWIP_HDR_INET_H */
-
diff --git a/src/include/lwip/ip.h b/src/include/lwip/ip.h
index 653c3b2f..68aed6af 100644
--- a/src/include/lwip/ip.h
+++ b/src/include/lwip/ip.h
@@ -326,5 +326,3 @@ err_t ip_input(struct pbuf *p, struct netif *inp);
 #endif
 
 #endif /* LWIP_HDR_IP_H */
-
-
diff --git a/src/include/lwip/ip4.h b/src/include/lwip/ip4.h
index fd35a336..4d7228d0 100644
--- a/src/include/lwip/ip4.h
+++ b/src/include/lwip/ip4.h
@@ -107,5 +107,3 @@ void ip4_debug_print(struct pbuf *p);
 #endif /* LWIP_IPV4 */
 
 #endif /* LWIP_HDR_IP_H */
-
-
diff --git a/src/include/lwip/ip_addr.h b/src/include/lwip/ip_addr.h
index 2f977709..ee7a0c9d 100644
--- a/src/include/lwip/ip_addr.h
+++ b/src/include/lwip/ip_addr.h
@@ -404,7 +404,7 @@ extern const ip_addr_t ip_addr_broadcast;
 
 extern const ip_addr_t ip6_addr_any;
 
-/** 
+/**
  * @ingroup ip6addr
  * IP6_ADDR_ANY can be used as a fixed ip_addr_t
  * for the IPv6 wildcard address
diff --git a/src/include/lwip/mld6.h b/src/include/lwip/mld6.h
index 7fa0797f..2764fdd4 100644
--- a/src/include/lwip/mld6.h
+++ b/src/include/lwip/mld6.h
@@ -84,7 +84,7 @@ err_t  mld6_leavegroup_netif(struct netif *netif, const ip6_addr_t *groupaddr);
 
 /** @ingroup mld6
  * Get list head of MLD6 groups for netif.
- * Note: The allnodes group IP is NOT in the list, since it must always 
+ * Note: The allnodes group IP is NOT in the list, since it must always
  * be received for correct IPv6 operation.
  * @see @ref netif_set_mld_mac_filter()
  */
diff --git a/src/include/lwip/pbuf.h b/src/include/lwip/pbuf.h
index 82902a4e..2ddd913a 100644
--- a/src/include/lwip/pbuf.h
+++ b/src/include/lwip/pbuf.h
@@ -55,7 +55,7 @@ extern "C" {
 #define LWIP_SUPPORT_CUSTOM_PBUF ((IP_FRAG && !LWIP_NETIF_TX_SINGLE_PBUF) || (LWIP_IPV6 && LWIP_IPV6_FRAG))
 #endif
 
-/** @ingroup pbuf 
+/** @ingroup pbuf
  * PBUF_NEEDS_COPY(p): return a boolean value indicating whether the given
  * pbuf needs to be copied in order to be kept around beyond the current call
  * stack without risking being corrupted. The default setting provides safety:
diff --git a/src/include/lwip/prot/ieee.h b/src/include/lwip/prot/ieee.h
index abbb9e31..cd4d2dea 100644
--- a/src/include/lwip/prot/ieee.h
+++ b/src/include/lwip/prot/ieee.h
@@ -53,7 +53,7 @@ enum lwip_ieee_eth_type {
   /** Internet protocol v4 */
   ETHTYPE_IP        = 0x0800U,
   /** Address resolution protocol */
-  ETHTYPE_ARP       = 0x0806U, 
+  ETHTYPE_ARP       = 0x0806U,
   /** Wake on lan */
   ETHTYPE_WOL       = 0x0842U,
   /** RARP */
diff --git a/src/include/lwip/sys.h b/src/include/lwip/sys.h
index 168e465b..cf13e1dc 100644
--- a/src/include/lwip/sys.h
+++ b/src/include/lwip/sys.h
@@ -130,7 +130,7 @@ typedef void (*lwip_thread_fn)(void *arg);
  * If the mutex has been created, ERR_OK should be returned. Returning any
  * other error will provide a hint what went wrong, but except for assertions,
  * no real error handling is implemented.
- * 
+ *
  * @param mutex pointer to the mutex to create
  * @return ERR_OK if successful, another err_t otherwise
  */
@@ -205,13 +205,13 @@ void sys_sem_signal(sys_sem_t *sem);
  * "timeout" argument is non-zero, the thread should only be blocked for the
  * specified time (measured in milliseconds). If the "timeout" argument is zero,
  * the thread should be blocked until the semaphore is signalled.
- * 
+ *
  * The return value is SYS_ARCH_TIMEOUT if the semaphore wasn't signaled within
  * the specified time or any other value if it was signaled (with or without
  * waiting).
  * Notice that lwIP implements a function with a similar name,
  * sys_sem_wait(), that uses the sys_arch_sem_wait() function.
- * 
+ *
  * @param sem the semaphore to wait for
  * @param timeout timeout in milliseconds to wait (0 = wait forever)
  * @return SYS_ARCH_TIMEOUT on timeout, any other value on success
@@ -277,7 +277,7 @@ void sys_msleep(u32_t ms); /* only has a (close to) 1 ms resolution. */
  * If the mailbox has been created, ERR_OK should be returned. Returning any
  * other error will provide a hint what went wrong, but except for assertions,
  * no real error handling is implemented.
- * 
+ *
  * @param mbox pointer to the mbox to create
  * @param size (minimum) number of messages in this mbox
  * @return ERR_OK if successful, another err_t otherwise
@@ -287,7 +287,7 @@ err_t sys_mbox_new(sys_mbox_t *mbox, int size);
  * @ingroup sys_mbox
  * Post a message to an mbox - may not fail
  * -> blocks if full, only to be used from tasks NOT from ISR!
- * 
+ *
  * @param mbox mbox to posts the message
  * @param msg message to post (ATTENTION: can be NULL)
  */
@@ -297,7 +297,7 @@ void sys_mbox_post(sys_mbox_t *mbox, void *msg);
  * Try to post a message to an mbox - may fail if full.
  * Can be used from ISR (if the sys arch layer allows this).
  * Returns ERR_MEM if it is full, else, ERR_OK if the "msg" is posted.
- * 
+ *
  * @param mbox mbox to posts the message
  * @param msg message to post (ATTENTION: can be NULL)
  */
@@ -307,7 +307,7 @@ err_t sys_mbox_trypost(sys_mbox_t *mbox, void *msg);
  * Try to post a message to an mbox - may fail if full.
  * To be be used from ISR.
  * Returns ERR_MEM if it is full, else, ERR_OK if the "msg" is posted.
- * 
+ *
  * @param mbox mbox to posts the message
  * @param msg message to post (ATTENTION: can be NULL)
  */
@@ -324,10 +324,10 @@ err_t sys_mbox_trypost_fromisr(sys_mbox_t *mbox, void *msg);
  * The return values are the same as for the sys_arch_sem_wait() function:
  * SYS_ARCH_TIMEOUT if there was a timeout, any other value if a messages
  * is received.
- * 
+ *
  * Note that a function with a similar name, sys_mbox_fetch(), is
- * implemented by lwIP. 
- * 
+ * implemented by lwIP.
+ *
  * @param mbox mbox to get a message from
  * @param msg pointer where the message is stored
  * @param timeout maximum time (in milliseconds) to wait for a message (0 = wait forever)
@@ -346,7 +346,7 @@ u32_t sys_arch_mbox_fetch(sys_mbox_t *mbox, void **msg, u32_t timeout);
  * example, a naive implementation could be:
  * \#define sys_arch_mbox_tryfetch(mbox,msg) sys_arch_mbox_fetch(mbox,msg,1)
  * although this would introduce unnecessary delays.
- * 
+ *
  * @param mbox mbox to get a message from
  * @param msg pointer where the message is stored
  * @return 0 (milliseconds) if a message has been received
@@ -363,7 +363,7 @@ u32_t sys_arch_mbox_tryfetch(sys_mbox_t *mbox, void **msg);
  * Deallocates a mailbox. If there are messages still present in the
  * mailbox when the mailbox is deallocated, it is an indication of a
  * programming error in lwIP and the developer should be notified.
- * 
+ *
  * @param mbox mbox to delete
  */
 void sys_mbox_free(sys_mbox_t *mbox);
@@ -411,7 +411,7 @@ void sys_mbox_set_invalid(sys_mbox_t *mbox);
  * the "stacksize" parameter. The id of the new thread is returned. Both the id
  * and the priority are system dependent.
  * ATTENTION: although this function returns a value, it MUST NOT FAIL (ports have to assert this!)
- * 
+ *
  * @param name human-readable name for the thread (used for debugging purposes)
  * @param thread thread-function
  * @param arg parameter passed to 'thread'
diff --git a/src/include/netif/lowpan6_ble.h b/src/include/netif/lowpan6_ble.h
index 01896a7f..5190e7bc 100644
--- a/src/include/netif/lowpan6_ble.h
+++ b/src/include/netif/lowpan6_ble.h
@@ -6,7 +6,7 @@
 /*
  * Copyright (c) 2017 Benjamin Aigner
  * Copyright (c) 2015 Inico Technologies Ltd. , Author: Ivan Delamer <delamer@inicotech.com>
- * 
+ *
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
@@ -32,10 +32,10 @@
  * OF SUCH DAMAGE.
  *
  * Author: Benjamin Aigner <aignerb@technikum-wien.at>
- * 
+ *
  * Based on the original 6lowpan implementation of lwIP ( @see 6lowpan.c)
  */
- 
+
 #ifndef LWIP_HDR_LOWPAN6_BLE_H
 #define LWIP_HDR_LOWPAN6_BLE_H
 
diff --git a/src/include/netif/lowpan6_opts.h b/src/include/netif/lowpan6_opts.h
index 17d46cdc..32e5c5ee 100644
--- a/src/include/netif/lowpan6_opts.h
+++ b/src/include/netif/lowpan6_opts.h
@@ -109,7 +109,7 @@
 #define LWIP_RFC7668_IP_UNCOMPRESSED_DEBUG    LWIP_DBG_OFF
 #endif
 
-/** LWIP_RFC7668_LINUX_WORKAROUND_PUBLIC_ADDRESS: 
+/** LWIP_RFC7668_LINUX_WORKAROUND_PUBLIC_ADDRESS:
  * Currently, the linux kernel driver for 6lowpan sets/clears a bit in
  * the address, depending on the BD address (either public or not).
  * Might not be RFC7668 conform, so you may select to do that (=1) or
diff --git a/src/include/netif/slipif.h b/src/include/netif/slipif.h
index 65ba31f8..46d20101 100644
--- a/src/include/netif/slipif.h
+++ b/src/include/netif/slipif.h
@@ -84,4 +84,3 @@ void slipif_received_bytes(struct netif *netif, u8_t *data, u8_t len);
 #endif
 
 #endif /* LWIP_HDR_NETIF_SLIPIF_H */
-
diff --git a/src/netif/bridgeif_fdb.c b/src/netif/bridgeif_fdb.c
index 6739fc24..2f052ec0 100644
--- a/src/netif/bridgeif_fdb.c
+++ b/src/netif/bridgeif_fdb.c
@@ -69,7 +69,7 @@ typedef struct bridgeif_dfdb_s {
  * remembers known src mac addresses to know which port to send frames destined for that
  * mac address.
  *
- * ATTENTION: This is meant as an example only, in real-world use, you should 
+ * ATTENTION: This is meant as an example only, in real-world use, you should
  * provide a better implementation :-)
  */
 void
@@ -120,9 +120,9 @@ bridgeif_fdb_update_src(void *fdb_ptr, struct eth_addr *src_addr, u8_t port_idx)
   /* not found, no free entry -> flood */
 }
 
-/** 
+/**
  * @ingroup bridgeif_fdb
- * Walk our list of auto-learnt fdb entries and return a port to forward or BR_FLOOD if unknown 
+ * Walk our list of auto-learnt fdb entries and return a port to forward or BR_FLOOD if unknown
  */
 bridgeif_portmask_t
 bridgeif_fdb_get_dst_ports(void *fdb_ptr, struct eth_addr *dst_addr)
diff --git a/src/netif/lowpan6_ble.c b/src/netif/lowpan6_ble.c
index d89816d3..d59b432f 100644
--- a/src/netif/lowpan6_ble.c
+++ b/src/netif/lowpan6_ble.c
@@ -6,7 +6,7 @@
 /*
  * Copyright (c) 2017 Benjamin Aigner
  * Copyright (c) 2015 Inico Technologies Ltd. , Author: Ivan Delamer <delamer@inicotech.com>
- * 
+ *
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
@@ -32,7 +32,7 @@
  * OF SUCH DAMAGE.
  *
  * Author: Benjamin Aigner <aignerb@technikum-wien.at>
- * 
+ *
  * Based on the original 6lowpan implementation of lwIP ( @see 6lowpan.c)
  */
 
@@ -95,15 +95,15 @@ static struct lowpan6_link_addr rfc7668_peer_addr;
 /**
  * @ingroup rfc7668if
  *  convert BT address to EUI64 addr
- * 
+ *
  * This method converts a Bluetooth MAC address to an EUI64 address,
  * which is used within IPv6 communication
- * 
+ *
  * @param dst IPv6 destination space
  * @param src BLE MAC address source
  * @param public_addr If the LWIP_RFC7668_LINUX_WORKAROUND_PUBLIC_ADDRESS
  * option is set, bit 0x02 will be set if param=0 (no public addr); cleared otherwise
- * 
+ *
  * @see LWIP_RFC7668_LINUX_WORKAROUND_PUBLIC_ADDRESS
  */
 void
@@ -128,12 +128,12 @@ ble_addr_to_eui64(uint8_t *dst, const uint8_t *src, int public_addr)
 /**
  * @ingroup rfc7668if
  *  convert EUI64 address to Bluetooth MAC addr
- * 
+ *
  * This method converts an EUI64 address to a Bluetooth MAC address,
- * 
+ *
  * @param dst BLE MAC address destination
  * @param src IPv6 source
- * 
+ *
  */
 void
 eui64_to_ble_addr(uint8_t *dst, const uint8_t *src)
@@ -214,16 +214,16 @@ rfc7668_set_peer_addr_mac48(struct netif *netif, const u8_t *peer_addr, size_t p
 }
 
 /** Encapsulate IPv6 frames for BLE transmission
- * 
+ *
  * This method implements the IPv6 header compression:
  *  *) According to RFC6282
  *  *) See Figure 2, contains base format of bit positions
  *  *) Fragmentation not necessary (done at L2CAP layer of BLE)
  * @note Currently the pbuf allocation uses 256 bytes. If longer packets are used (possible due to MTU=1480Bytes), increase it here!
- * 
+ *
  * @param p Pbuf struct, containing the payload data
  * @param netif Output network interface. Should be of RFC7668 type
- * 
+ *
  * @return Same as netif->output.
  */
 static err_t
@@ -340,7 +340,7 @@ rfc7668_output(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr)
  * @param p the received packet, p->payload pointing to the
  *        IPv6 header (maybe compressed)
  * @param netif the network interface on which the packet was received
- * 
+ *
  * @return ERR_OK if everything was fine
  */
 err_t
@@ -352,7 +352,7 @@ rfc7668_input(struct pbuf * p, struct netif *netif)
 
   /* Load first header byte */
   puc = (u8_t*)p->payload;
-  
+
   /* no IP header compression */
   if (*puc == 0x41) {
     LWIP_DEBUGF(LWIP_LOWPAN6_DECOMPRESSION_DEBUG, ("Completed packet, removing dispatch: 0x%2x \n", *puc));
@@ -398,12 +398,12 @@ rfc7668_input(struct pbuf * p, struct netif *netif)
 /**
  * @ingroup rfc7668if
  * Initialize the netif
- * 
+ *
  * No flags are used (broadcast not possible, not ethernet, ...)
  * The shortname for this netif is "BT"
  *
  * @param netif the network interface to be initialized as RFC7668 netif
- * 
+ *
  * @return ERR_OK if everything went fine
  */
 err_t
@@ -433,7 +433,7 @@ rfc7668_if_init(struct netif *netif)
  * @param p the received packet, p->payload pointing to the
  *          IEEE 802.15.4 header.
  * @param inp the network interface on which the packet was received
- * 
+ *
  * @return see @ref tcpip_inpkt, same return values
  */
 err_t
diff --git a/src/netif/lowpan6_common.c b/src/netif/lowpan6_common.c
index baea206a..89758d94 100644
--- a/src/netif/lowpan6_common.c
+++ b/src/netif/lowpan6_common.c
@@ -430,7 +430,7 @@ lowpan6_decompress_hdr(u8_t *lowpan6_buffer, size_t lowpan6_bufsize,
 
   /* offset for inline IP headers (RFC 6282 ch3)*/
   lowpan6_offset = 2;
-  /* if CID is set (context identifier), the context byte 
+  /* if CID is set (context identifier), the context byte
    * follows immediately after the header, so other IPHC fields are @+3 */
   if (lowpan6_buffer[1] & 0x80) {
     lowpan6_offset++;