Add some helper macros to make the code a little more compac

include/net/if.h

@@ -114,6 +114,9 @@ struct lifreq
 #define lifr_mtu              lifr_ifru.lifru_mtu       /* MTU */
 #define lifr_count            lifr_ifru.lifru_count     /* Number of devices */
 #define lifr_flags            lifr_ifru.lifru_flags     /* interface flags */
+#define lifr_mii_notify_pid   lifr_ifru.llfru_mii_notify.pid   /* PID to be notified */
+#define lifr_mii_notify_signo lifr_ifru.llfru_mii_notify.signo /* Signal to notify with */
+#define lifr_mii_notify_arg   lifr_ifru.llfru_mii_notify.arg   /* sigval argument */
 #define lifr_mii_phy_id       lifr_ifru.lifru_mii_data.phy_id  /* PHY device address */
 #define lifr_mii_reg_num      lifr_ifru.lifru_mii_data.reg_num /* PHY register address */
 #define lifr_mii_val_in       lifr_ifru.lifru_mii_data.val_in  /* PHY input data */
@@ -151,6 +154,9 @@ struct ifreq
 #define ifr_mtu               ifr_ifru.ifru_mtu         /* MTU */
 #define ifr_count             ifr_ifru.ifru_count       /* Number of devices */
 #define ifr_flags             ifr_ifru.ifru_flags       /* interface flags */
+#define ifr_mii_notify_pid    ifr_ifru.ifru_mii_notify.pid   /* PID to be notified */
+#define ifr_mii_notify_signo  ifr_ifru.ifru_mii_notify.signo /* Signal to notify with */
+#define ifr_mii_notify_arg    ifr_ifru.ifru_mii_notify.arg   /* sigval argument */
 #define ifr_mii_phy_id        ifr_ifru.ifru_mii_data.phy_id  /* PHY device address */
 #define ifr_mii_reg_num       ifr_ifru.ifru_mii_data.reg_num /* PHY register address */
 #define ifr_mii_val_in        ifr_ifru.ifru_mii_data.val_in  /* PHY input data */