1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 9672781c593d..0f5837a9b1ba 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -125,6 +125,11 @@ enum {
 #define NETIF_F_HW_L2FW_DOFFLOAD        __NETIF_F(HW_L2FW_DOFFLOAD)
 #define NETIF_F_BUSY_POLL       __NETIF_F(BUSY_POLL)
 
+#define for_each_netdev_feature(mask_addr, feature)                             \
+        int bit;                                                                \
+        for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT) \
+                feature = __NETIF_F_BIT(bit);
+
 /* Features valid for ethtool to change */
 /* = all defined minus driver/device-class-related */
 #define NETIF_F_NEVER_CHANGE    (NETIF_F_VLAN_CHALLENGED | \
@@ -167,6 +172,12 @@ enum {
  */
 #define NETIF_F_ALL_FOR_ALL     (NETIF_F_NOCACHE_COPY | NETIF_F_FSO)
 
+/*
+ * If upper/master device has these features disabled, they must be disabled
+ * on all lower/slave devices as well.
+ */
+#define NETIF_F_UPPER_DISABLES  NETIF_F_LRO
+
 /* changeable features with no special hardware requirements */
 #define NETIF_F_SOFT_FEATURES   (NETIF_F_GSO | NETIF_F_GRO)