lwip: Use the right error type.

Use lwip's err_t as return type for functions called from lwip
and error_t for functions called from the translator.

* lwip/io-ops.c: Include <errno.h>
	* as is not being included for other headers anymore.
* lwip/lwip-util.h: Likewise.
* lwip/port/include/netif/hurdethif.h:
	* Include <errno.h>
	* Change the return type of the init function to err_t.
* lwip/port/include/netif/hurdloopif.h: Liekwise.
* lwip/port/include/netif/hurdtunif.h: Likewise.
* lwip/port/include/netif/ifcommon.h: Likewise.
* lwip/port/netif/ifcommon.c: Likewise.
* lwip/port/netif/hurdloopif.c:
	* Include <errno.h>
	* Change output function return type to err_t.
        * Return lwip's err_t codes.
* lwip/port/netif/hurdethif.c:
	* Include <errno.h>
	* Change init function return type to err_t.
	* Change output function return type to err_t.
	* Return lwip's err_t codes.
* lwip/port/netif/hurdtunif.c: Likewise.
Message-Id: <20190331175541.7095-3-jlledom@member.fsf.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/lwip/port/netif/ifcommon.c b/lwip/port/netif/ifcommon.c
index c6179683..5a1c68a2 100644
--- a/lwip/port/netif/ifcommon.c
+++ b/lwip/port/netif/ifcommon.c
@@ -23,6 +23,7 @@
 #include <netif/ifcommon.h>
 
 #include <net/if.h>
+#include <errno.h>
 
 #include <lwip/netifapi.h>
 
@@ -70,8 +71,8 @@ if_close (struct netif *netif)
  * This function doesn't assume there's a device nor tries to open it.
  * If a device is present, it must be opened from the ifc->init() callback.
  */
-error_t
-if_init (struct netif * netif)
+err_t
+if_init (struct netif *netif)
 {
   struct ifcommon *ifc = netif_get_state (netif);