Apparatus and methods for hardware payload header suppression, expansion, and verification in a DOCSIS network

An apparatus for performing payload header verification, comprising:

• a descriptor/payload fetch circuit configured to isolate a header and a payload from a data packet from among a plurality of data packets;
• and
• a payload header verification circuit configured to:
• (i) receive at least a portion of the header from the descriptor/payload fetch circuit,
• (ii) compare the at least a portion of the header to an expected value, and
• (iii) set a verification pass indication if the at least a portion of the header equals the expected value.

A system for performing payload header verification and suppression, comprising:

• a payload header verification circuit, comprising:
• a mask shift register configured to receive and store a mask, wherein the mask includes a plurality of mask values, each mask value corresponding to a respective portion of a header;
• and
• a comparator circuit coupled to the mask shift register and configured to
• assert a verification pass indication when
• a portion of the header equals the expected value, and
• a mask shift value, stored in the mask shift register and corresponding to the portion of the header, is a first value.

A method for performing payload header verification using a payload header verification circuit, comprising:

• loading a mask into a mask shift register of the payload header verification circuit, wherein the mask includes a plurality of mask values, each mask value corresponding to a respective portion of a header;
• receiving a first portion of a header at a comparator circuit of the payload header verification circuit;
• receiving a first portion of an expected header value at the comparator circuit;
• enabling the comparator circuit based on a first mask value corresponding to the first portion of the header;
• and
• asserting a verification pass indication if the first portion of the header equals the first portion of the expected header value.