vendor wgctrl

Signed-off-by: leonnicolas <leonloechner@gmx.de>

vendor/github.com/mdlayher/netlink/align.go

@@ -0,0 +1,37 @@
+package netlink
+
+import "unsafe"
+
+// Functions and values used to properly align netlink messages, headers,
+// and attributes.  Definitions taken from Linux kernel source.
+
+// #define NLMSG_ALIGNTO   4U
+const nlmsgAlignTo = 4
+
+// #define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
+func nlmsgAlign(len int) int {
+	return ((len) + nlmsgAlignTo - 1) & ^(nlmsgAlignTo - 1)
+}
+
+// #define NLMSG_LENGTH(len) ((len) + NLMSG_HDRLEN)
+func nlmsgLength(len int) int {
+	return len + nlmsgHeaderLen
+}
+
+// #define NLMSG_HDRLEN     ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
+var nlmsgHeaderLen = nlmsgAlign(int(unsafe.Sizeof(Header{})))
+
+// #define NLA_ALIGNTO             4
+const nlaAlignTo = 4
+
+// #define NLA_ALIGN(len)          (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
+func nlaAlign(len int) int {
+	return ((len) + nlaAlignTo - 1) & ^(nlaAlignTo - 1)
+}
+
+// Because this package's Attribute type contains a byte slice, unsafe.Sizeof
+// can't be used to determine the correct length.
+const sizeofAttribute = 4
+
+// #define NLA_HDRLEN              ((int) NLA_ALIGN(sizeof(struct nlattr)))
+var nlaHeaderLen = nlaAlign(sizeofAttribute)