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Low-level programming is machine-oriented and sits close to computer peripherals. Low-level programming allows the programmer to adapt the processor to precise minimum memory usage requirements while maintaining high performance.

Thumbnail of an article about P4 Network Programming Language — what is it all about?
SOFTWARE DEVELOPMENT
NETWORKS

P4 Network Programming Language — what is it all about?

The programming language P4 is gaining in popularity in the network industry and is considered the next step in the SDN evolution. In this blog post, I will take a closer look at P4 and try to show why it is so important. Network devices like switches or routers are most commonly designed ”bottom-up.” The switch vendors that offer products to their clients usually rely on external chips from 3rd party silicon vendors. The chip is the heart of the system and in practice determines how device OS is realized and what functionality it can offer.
Paweł Parol

Paweł Parol

Thumbnail of an article about How can DPDK access devices from user space?
SOFTWARE DEVELOPMENT
NETWORKS

How can DPDK access devices from user space?

DPDK (Data Plane Development Kit) is a set of libraries for implementing user space drivers for NICs (Network Interface Controllers). It provides a set of abstractions which allows a sophisticated packet processing pipeline to be programmed. But how does DPDK work? How is it able to access the hardware directly? How does it communicate with the hardware? Why does it require a UIO module (Userspace input-output)? What are hugepages and why are they so crucial? In this blog post I will try to explain, with a reasonable amount of detail, how a standard kernel space NIC driver works, how a user space program can access hardware and what can be gained from having it do so.
Dariusz Sosnowski

Dariusz Sosnowski

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