Add EHOSTUNREACH to nl_syserr2nlerr

For improved error-output.

Signed-off-by: Christoph Paasch <cpaasch@openai.com>

#433

Author: cpaasch-oai

include/netlink/errno.h

@@ -45,8 +45,9 @@ extern "C" {
 #define NLE_IMMUTABLE		32
 #define NLE_DUMP_INTR		33
 #define NLE_ATTRSIZE		34
+#define NLE_HOSTUNREACH		35
 
-#define NLE_MAX		NLE_ATTRSIZE
+#define NLE_MAX		NLE_HOSTUNREACH
 
 extern const char *	nl_geterror(int);
 extern void		nl_perror(int, const char *);

lib/error.c

@@ -43,6 +43,7 @@ static const char *errmsg[NLE_MAX+1] = {
 [NLE_IMMUTABLE]		= "Immutable attribute",
 [NLE_DUMP_INTR]		= "Dump inconsistency detected, interrupted",
 [NLE_ATTRSIZE]		= "Attribute max length exceeded",
+[NLE_HOSTUNREACH]	= "Host is unreachable",
 };
 
 /**
@@ -104,9 +105,9 @@ int nl_syserr2nlerr(int error)
 	case EBUSY:		return NLE_BUSY;
 	case ERANGE:		return NLE_RANGE;
 	case ENODEV:		return NLE_NODEV;
+	case EHOSTUNREACH:	return NLE_HOSTUNREACH;
 	default:		return NLE_FAILURE;
 	}
 }
 
 /** @} */
-