unix: add missing IFLA_* consts on linux

Add these based on uapi/linux/if_link.h as of Linux kernel 5.19.

Change-Id: I56be6e6178aad3d10194a45f774ccf307ed461b5
Reviewed-on: https://go-review.googlesource.com/c/sys/+/420694
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
diff --git a/unix/linux/types.go b/unix/linux/types.go
index 9a39c35..2287618 100644
--- a/unix/linux/types.go
+++ b/unix/linux/types.go
@@ -1487,6 +1487,11 @@
 	IFLA_ALT_IFNAME                            = C.IFLA_ALT_IFNAME
 	IFLA_PERM_ADDRESS                          = C.IFLA_PERM_ADDRESS
 	IFLA_PROTO_DOWN_REASON                     = C.IFLA_PROTO_DOWN_REASON
+	IFLA_PARENT_DEV_NAME                       = C.IFLA_PARENT_DEV_NAME
+	IFLA_PARENT_DEV_BUS_NAME                   = C.IFLA_PARENT_DEV_BUS_NAME
+	IFLA_GRO_MAX_SIZE                          = C.IFLA_GRO_MAX_SIZE
+	IFLA_TSO_MAX_SIZE                          = C.IFLA_TSO_MAX_SIZE
+	IFLA_TSO_MAX_SEGS                          = C.IFLA_TSO_MAX_SEGS
 	IFLA_PROTO_DOWN_REASON_UNSPEC              = C.IFLA_PROTO_DOWN_REASON_UNSPEC
 	IFLA_PROTO_DOWN_REASON_MASK                = C.IFLA_PROTO_DOWN_REASON_MASK
 	IFLA_PROTO_DOWN_REASON_VALUE               = C.IFLA_PROTO_DOWN_REASON_VALUE
diff --git a/unix/ztypes_linux.go b/unix/ztypes_linux.go
index f6de1ee..ff68811 100644
--- a/unix/ztypes_linux.go
+++ b/unix/ztypes_linux.go
@@ -1466,6 +1466,11 @@
 	IFLA_ALT_IFNAME                            = 0x35
 	IFLA_PERM_ADDRESS                          = 0x36
 	IFLA_PROTO_DOWN_REASON                     = 0x37
+	IFLA_PARENT_DEV_NAME                       = 0x38
+	IFLA_PARENT_DEV_BUS_NAME                   = 0x39
+	IFLA_GRO_MAX_SIZE                          = 0x3a
+	IFLA_TSO_MAX_SIZE                          = 0x3b
+	IFLA_TSO_MAX_SEGS                          = 0x3c
 	IFLA_PROTO_DOWN_REASON_UNSPEC              = 0x0
 	IFLA_PROTO_DOWN_REASON_MASK                = 0x1
 	IFLA_PROTO_DOWN_REASON_VALUE               = 0x2