diff --git a/libc/kernel/uapi/linux/mii.h b/libc/kernel/uapi/linux/mii.h
index 3c6c564..4ee4448 100644
--- a/libc/kernel/uapi/linux/mii.h
+++ b/libc/kernel/uapi/linux/mii.h
@@ -120,6 +120,16 @@
 #define NWAYTEST_RESV1 0x00ff
 #define NWAYTEST_LOOPBACK 0x0100
 #define NWAYTEST_RESV2 0xfe00
+#define ADVERTISE_SGMII 0x0001
+#define LPA_SGMII 0x0001
+#define LPA_SGMII_DPX_SPD_MASK 0x1C00
+#define LPA_SGMII_10HALF 0x0000
+#define LPA_SGMII_10FULL 0x1000
+#define LPA_SGMII_100HALF 0x0400
+#define LPA_SGMII_100FULL 0x1400
+#define LPA_SGMII_1000HALF 0x0800
+#define LPA_SGMII_1000FULL 0x1800
+#define LPA_SGMII_LINK 0x8000
 #define ADVERTISE_1000FULL 0x0200
 #define ADVERTISE_1000HALF 0x0100
 #define CTL1000_AS_MASTER 0x0800