Hanic
The Hardware Accelerated Network Interface Card, abbreviated as HANIC, is both software and firmware that brings additional functionality to the COMBO family cards. 10G HANIC is dual-port 10 Gbps network interface card with hardware accelerated features. The main feature of HANIC is the distribution of incoming traffic among 8 software interfaces (DMA channels), which can be then processed by a single CPU core each. The HANIC packet distribution among channels is based on a hash computed from extracted packet header fields, and therefore preserves the flow-to-core mapping. The selection of the input fields to hash is configurable and the following header fields are supported:
- IP version
- Source and destination IP address (version 4 and 6)
- L4 protocol
- Ports (TCP and UDP)
Simplified scheme of HANIC firmware
Features
Apart from the features already mentioned, HANIC firmware also supports the following:
- Sampling of packets 1:N.
- Swapping source and destination address and port for the hash computation (for monitoring of both directions of communication at the same CPU core).
- Round-robin distribution of packets.
- Trimming of packets to set length.
- Precise timestamps.
- Hash-based sampling of packets.
- Basic filtering of packets by given rules.
- Basic firewall.
- Export of parsed packet header fields to software (instead of full packet).