Network: Misc fixes for clean complete with both Ethernet and SLIP enabled

drivers/net/slip.c

@@ -961,7 +961,8 @@ int slip_initialize(int intf, FAR const char *devname)
   argv[1] = NULL;
 
   priv->rxpid = task_create("rxslip", CONFIG_SLIP_DEFPRIO,
-                          CONFIG_SLIP_STACKSIZE, (main_t)slip_rxtask, argv);
+                          CONFIG_SLIP_STACKSIZE, (main_t)slip_rxtask,
+                          (FAR char * const *)argv);
   if (priv->rxpid < 0)
     {
       ndbg("ERROR: Failed to start receiver task\n");
@@ -975,7 +976,8 @@ int slip_initialize(int intf, FAR const char *devname)
   /* Start the SLIP transmitter task */
 
   priv->txpid = task_create("txslip", CONFIG_SLIP_DEFPRIO,
-                            CONFIG_SLIP_STACKSIZE, (main_t)slip_txtask, argv);
+                            CONFIG_SLIP_STACKSIZE, (main_t)slip_txtask,
+                            (FAR char * const *)argv);
   if (priv->txpid < 0)
     {
       ndbg("ERROR: Failed to start receiver task\n");

include/nuttx/net/netconfig.h

@@ -82,17 +82,12 @@
  * should be set to 0.
  */
 
-#undef CONFIG_NET_ETHERNET
-#undef CONFIG_NET_ARP
-
 #ifdef CONFIG_NET_SLIP
 #  ifdef CONFIG_NET_IPv6
-#    error "SLIP is not implemented for IPv6"
+#    error SLIP is not available for IPv6
 #  endif
 #  define NET_LL_HDRLEN       0
 #else
-#  define CONFIG_NET_ETHERNET 1
-#  define CONFIG_NET_ARP      1
 #  define NET_LL_HDRLEN       14
 #endif
 

net/Kconfig

@@ -88,42 +88,15 @@ config NET_GUARDSIZE
 		packet size will be chopped down to the size indicated in the TCP
 		header.
 
-source "net/socket/Kconfig"
-source "net/netdev/Kconfig"
-source "net/ipv6/Kconfig"
-source "net/pkt/Kconfig"
-source "net/tcp/Kconfig"
-source "net/udp/Kconfig"
-source "net/icmp/Kconfig"
-source "net/igmp/Kconfig"
-source "net/arp/Kconfig"
-source "net/iob/Kconfig"
-source "net/utils/Kconfig"
-
-config NET_STATISTICS
-	bool "Collect network statistics"
-	default n
-	---help---
-		uIP statistics on or off
-
-source "net/route/Kconfig"
-
-config NET_MULTICAST
-	bool "Multi-cast Tx support"
-	default n
-	---help---
-		Outgoing multi-cast address support
-
-# Select Data Link
+menu "Data link support"
 
 config NET_MULTILINK
 	bool
 	default n
 
 config NET_ETHERNET
-	bool
-	default y if !NET_SLIP
-	default n if NET_SLIP
+	bool "Ethernet support"
+	default y
 	select NETDEV_MULTINIC if NET_SLIP
 	select NET_MULTILINK if NET_SLIP
 	---help---
@@ -182,4 +155,32 @@ config SLIP_DEFPRIO
 		The priority of the SLIP RX and TX tasks. Default: 128
 
 endif # NET_SLIP
+endmenu # Data link support
+
+source "net/socket/Kconfig"
+source "net/netdev/Kconfig"
+source "net/ipv6/Kconfig"
+source "net/pkt/Kconfig"
+source "net/tcp/Kconfig"
+source "net/udp/Kconfig"
+source "net/icmp/Kconfig"
+source "net/igmp/Kconfig"
+source "net/arp/Kconfig"
+source "net/iob/Kconfig"
+source "net/utils/Kconfig"
+
+config NET_STATISTICS
+	bool "Collect network statistics"
+	default n
+	---help---
+		uIP statistics on or off
+
+source "net/route/Kconfig"
+
+config NET_MULTICAST
+	bool "Multi-cast Tx support"
+	default n
+	---help---
+		Outgoing multi-cast address support
+
 endif # NET

net/arp/arp_send.c

@@ -40,6 +40,7 @@
 #include <nuttx/config.h>
 
 #include <unistd.h>
+#include <string.h>
 #include <semaphore.h>
 #include <time.h>
 #include <debug.h>
@@ -97,7 +98,7 @@ static uint16_t arp_send_interrupt(FAR struct net_driver_s *dev,
 #ifdef CONFIG_NETDEV_MULTINIC
       /* Is this the device that we need to route this request? */
 
-      if (strncmp(dev->d_ifname, state->snd_ifname, IFNAMSIZ) != 0)
+      if (strncmp((FAR const char *)dev->d_ifname, (FAR const char *)state->snd_ifname, IFNAMSIZ) != 0)
         {
           /* No... pass on this one and wait for the device that we want */
 
@@ -295,7 +296,7 @@ int arp_send(in_addr_t ipaddr)
 #ifdef CONFIG_NETDEV_MULTINIC
   /* Remember the routing device name */
 
-  strncpy(state->snd_ifname, dev->d_ifname, IFNAMSIZ);
+  strncpy((FAR char *)state.snd_ifname, (FAR const char *)dev->d_ifname, IFNAMSIZ);
 #endif
 
   /* Now loop, testing if the address mapping is in the ARP table and re-sending the ARP request if it is not.

net/netdev/netdev_register.c

@@ -147,7 +147,6 @@ int netdev_register(FAR struct net_driver_s *dev, enum net_lltype_e lltype)
             dev->d_llhdrlen = 0;
             break;
 #endif
-            break;
 
             /* REVISIT:  Here we must also set the size of the link header
              * header the precedes network layer headers.
@@ -162,7 +161,7 @@ int netdev_register(FAR struct net_driver_s *dev, enum net_lltype_e lltype)
 
       /* Remember the verified link type */
 
-      dev->d_lltype = (uint8_t)lltype
+      dev->d_lltype = (uint8_t)lltype;
 #endif
 
       /* Assign a device name to the interface */