feat: dynamic length event#654
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Change from a fixed type for events from BPF to a variable length one. This is done by using a helper map in which we can write all the information for a given event, then submit it to the ringbuffer with the bpf_ringbuf_output helper. On the userspace, we get a RingBufItem which can be treated as a slice of bytes we can split to retrieve fields one by one. This change needs to be properly tested for performance, we should use a lot less space for each event in the ringbuffer but serializing and deserializing each event might require more CPU. TODO: Document the format for the serialized event in the ringbuffer. TODO: Add tests for the event::parser module.
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Description
Change from a fixed type for events from BPF to a variable length one. This is done by using a helper map in which we can write all the information for a given event, then submit it to the ringbuffer with the bpf_ringbuf_output helper.
On the userspace, we get a RingBufItem which can be treated as a slice of bytes we can split to retrieve fields one by one.
This change needs to be properly tested for performance, we should use a lot less space for each event in the ringbuffer but serializing and deserializing each event might require more CPU.
Supersedes #179
Checklist
Automated testing
If any of these don't apply, please comment below.
Testing Performed
TBD