MSGGLOBAL_HEADER_LEN Macro

#define MSGGLOBAL_HEADER_LEN(x) ( x= (2 \
                              +1+1+4 \
                              +1+1+4 \
                              +1+1+1  \
                              +1+1+1)\
                            )

Length of the SNMPv3 msg header(x) = Header length (2 bytes)

• MSGID size (type(1 byte) + length of value(1 byte)+4 bytes value)
• msgMAXSIZE(type + length of value +4 bytes value)
• msg flag(type + length of value +1 byte value)
• security model type(type + length of value +1 byte value)