ethtool: add speed/duplex validation functions

Add functions which check if the speed/duplex are defined.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 57fa390..b2e1801 100644 (file)
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -1319,11 +1319,45 @@ enum ethtool_sfeatures_retval_bits {
 
 #define SPEED_UNKNOWN          -1
 
+static inline int ethtool_validate_speed(__u32 speed)
+{
+       switch (speed) {
+       case SPEED_10:
+       case SPEED_100:
+       case SPEED_1000:
+       case SPEED_2500:
+       case SPEED_5000:
+       case SPEED_10000:
+       case SPEED_20000:
+       case SPEED_25000:
+       case SPEED_40000:
+       case SPEED_50000:
+       case SPEED_56000:
+       case SPEED_100000:
+       case SPEED_UNKNOWN:
+               return 1;
+       }
+
+       return 0;
+}
+
 /* Duplex, half or full. */
 #define DUPLEX_HALF            0x00
 #define DUPLEX_FULL            0x01
 #define DUPLEX_UNKNOWN         0xff
 
+static inline int ethtool_validate_duplex(__u8 duplex)
+{
+       switch (duplex) {
+       case DUPLEX_HALF:
+       case DUPLEX_FULL:
+       case DUPLEX_UNKNOWN:
+               return 1;
+       }
+
+       return 0;
+}
+
 /* Which connector port. */
 #define PORT_TP                        0x00
 #define PORT_AUI               0x01