Systems and methods for emulating a NIC for packet transmission on hardware RSS unaware NICs in a multi-core system

A system for emulating a network interface card (NIC) by a core in a multi-core system, comprising:

• a device comprising a plurality of cores;
• a slave packet engine executed by a first core of the plurality of cores and comprising a local queue, the slave packet engine configured for:
• processing a first packet for transmission from the device,
• writing the processed first packet to the local queue of the slave packet engine, and
• incrementing a write pointer of the local queue of the slave packet engine, responsive to writing the processed first packet to the local queue of the slave packet engine;
• and
• a master packet engine executed by a second core of the plurality of cores, configured for:
• reading the processed first packet from the local queue of the slave packet engine,
• incrementing a read pointer of the local queue of the slave packet engine, responsive to reading the processed first packet from the local queue of the slave packet engine,
• transmitting the processed first packet from the device,
• incrementing a transmission pointer of the local queue of the slave packet engine, responsive to transmitting the processed first packet from the device;
• and
• wherein the slave packet engine is further configured for performing a congestion handling protocol based on a detecting that a difference exists between a value of the write pointer and a value of one of the read pointer or transmission pointer of the local queue of the slave packet engine.

A system comprising:

• a device comprising a plurality of cores;
• a slave packet engine executed by a first core of the plurality of cores and comprising a local queue, the slave packet engine configured for:
• processing a first packet for transmission from the device,
• writing the processed first packet to the local queue of the slave packet engine,
• wherein writing comprises writing information about the first packet to a data structure shared by the slave packet engine and a master packet engine, and
• incrementing a write pointer of the local queue of the slave packet engine, responsive to writing the processed first packet to the local queue of the slave packet engine;
• and
• the master packet engine executed by a second core of the plurality of cores, configured for:
• reading the processed first packet from the local queue of the slave packet engine wherein reading comprises reading the information about the first packet from the shared data structure;
• incrementing a read pointer of the local queue of the slave packet engine, responsive to reading the processed first packet from the local queue of the slave packet engine,
• transmitting the processed first packet from the device,
• incrementing a transmission pointer of the local queue of the slave packet engine, responsive to transmitting the processed first packet from the device;
• and
• wherein the slave packet engine is further configured for deleting the information about the first packet from the shared data structure, responsive to the master packet engine incrementing the transmission pointer of the local queue of the slave packet engine.