Ring buffer network

1. What is ring buffer in network?
2. Where is ring buffer used?
3. Why is it called a ring buffer?
4. What happens when ring buffer is full?

What is ring buffer in network?

Ring buffers, also known as circular buffers, are shared buffers between the device driver and Network Interface Card (NIC). These buffers store incoming packets until the device driver can process them. Ring buffers exist on both the receive (rx) and transmit (tx) side of each interface on the firewall.

Where is ring buffer used?

Ring Buffers are common data structures frequently used when the input and output to a data stream occur at different rates.

Why is it called a ring buffer?

What Does Ring Buffer Mean? A ring buffer is a data structure that is treated as circular although it its implementation is linear. A circular buffer is typically used as a data queue.

What happens when ring buffer is full?

If the buffer is full, we know that our capacity is at the maximum. If head is greater-than-or-equal-to the tail , we simply subtract the two values to get our size. If tail is greater than head , we need to offset the difference with max to get the correct size.