Hi, Can anyone help me with an example of a GO-bpf program using TC Thanks, Kanthi

Hi all, Recently I've been testing with ebpf sockmap. I know that after setting the sock fd in sockmap, the data send to this socket can redirect to another socket that register in the sockmap. I

Hi all, Let's skip the meeting this week, since there isn't a specific agenda to discuss. Going forward, I'll send out a call for agenda reminder 2 days in advance so the meeting isn't decided last

I have only received the following agenda from Brendan so far: Are there any further agenda items?

Hi All, As per the discussion from last meeting, this week's meeting will be provisional on having a proposed agenda rather than free-form. Therefore, please reply if there is a topic that you would

We just released bpftrace v0.9.1. This turned into a pretty big release, with almost 200 commits and 3 months since v0.9.0. We'll try to have smaller development cycles for the next releases. Some

On Wed, Jun 12, 2019 at 09:31 PM, Toshiaki Makita wrote: I cannot reproduce it. Is it an XDP-related problem? What happens if you use bridge in place of XDP_REDIRECT? Did you collect tcpdump result in

How will bpf_probe_read_user/bpf_probe_read_kernel be enforced in the Kernel? In other words, how bpf_probe_read_user will detect and report when it get's a Kernel address as parameter, and

G'Day, This is the biggest change afoot to the bpftrace API, and I think we can sort it out quickly without fuss, but it is worth sharing here. This is from

FWIW - I don't share the same consideration, and I'd be inclined to say that clear documentation helps educate folks, whereas inventing new terminology just because there's a wall of confusion, would

Just a personal comment. Talking about "BPF VM" to students raises a lot of confusion, as they expect a full fledged VM and do not undestand what "VM" means in this case. Comparing to Java does not

Because XDP core does not support checksum (or any other) offload. Any of necessary information for offloading will be discarded when converting skb into xdp_frame. Basically veth XDP is not so fast

Hi all, Thanks for dialing in to the meeting this week. Going forward, in order to conserve everyone's time, we will be polling ahead of time for an agenda, and foregoing the online meeting in favor

I'd probably drop the '(defined in filter.h, etc)' part, but otherwise I think it's fine. Thanks, Daniel

Following on from the call... Does this sound even better? (mapping from the JVM for comparison): The JVM is a specification of a virtual machine that runs Java bytecode. It is implemented by a Java

In https://lists.iovisor.org/g/iovisor-dev/topic/how_to_make_redirect_map/31867035 I have built up an environment to make veth+XDP work. There're some question when I do some performance test 1. When

Brenden, thanks for the bi-weekly reminders! All, if you have any topics to discuss, please email them to the list, so folks have better idea what to expect tomorrow. Thanks!

Please join us tomorrow for our bi-weekly call. As usual, this meeting is open to everybody and completely optional. You might be interested to join if: You want to know what is going on in BPF

Wouldn't you punt that to a userland xdp listener for action?  Dns packets are complicated.

Hi all, I am trying to create a header for the DNS protocol and parse DNS queries however I cannot parse headers with variable size e.g. the domain name (due to looping constraints of XDP). Is there a