Hi everyone, I am using BPF_MAP_TYPE_HASH in BPF map definition and my program is working as expected. I have read eBPF-map type BPF_MAP_TYPE_PERCPU_HASH allows for lock free uses of hash-tables in eB

Hi All, Thanks for dialing in to the call today. Here are notes from the discussion. Thanks, Brenden === Discussion === Alexei: * Spinlock patches being worked on * Proposal to standardize the BPF ELF

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 land Y

Hi All, Thanks for joining the call today after a short holiday hiatus. Below are my notes from the call. === Discussion === Brenden * Adopted new project kubectl-trace into github.com/iovisor from th

*** Resuming after a holiday break *** 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

Is there anything that can go haywire if an eBPF map gets too big in an XDP program? I am looking into importing a large database of unique IPs (10,000-100,000) into a eBPF hash map in a XDP program t

I want to messages from iovisor-dev@...

Can you give link or some code to understand, how can i get data from maps in c. I saw example, but as i begginer in such programming, i can understand map_fd, obj...etc. I create xdp prog, inserted i

Yes currently i believe only Netronome NFP based Agilio CX NICs support xdpoffload.

Hi, everyone! I've written a small script using bcc python lib for qemu block io latency tracing. I attach two uprobes to block_acct_start and block_acct_done. On some servers i can see unexpectedly h

Dear eBPF community If I understand correctly, per_cpu maps are meant to avoid threading issues, and for example the need to call BPF_XADD to keep counters safe. There is something I am unclear about:

The patch adds the test framework for OVS using afxdp. Most of the test cases are slightly modified from the existing test cases at system-traffic.at. All the veth creations, ADD_VETH, are replaced by

There are still two issues causing some test cases failed. This patch provides an work-around. Signed-off-by: William Tu <u9012063@...> --- lib/dpif-netdev.c | 2 +- tests/system-afxdp-macros.at | 2 ++

The patch creates a new netdev type called "afxdp" and re-uses some of the AF_XDP API implementation from xdpsock_user.c at linux sample code. By default, it binds a device's queue 0 and uses the gene

The patch series introduces AF_XDP support for OVS netdev. AF_XDP is a new address family working together with eBPF. In short, a socket with AF_XDP family can receive and send packets from an eBPF/XD

Thanks all for joining in to the call today. As usual, here are my notes. === Discussion === Jiong: Continuing work on jmp32 - some work on verifier side - needs to work on test support - new test mod

Hi, Is there a particular version of LLVM that is recommended to use with bcc 0.7.0? Thanks, Tom

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 land Y

Hi, Can anyone suggest a way to adjust the packet length(for example to strip off the payload and have only headers) using eBPF TC program? Thanks, Kanthi

hi, this is RFC patchset on 2 tools that our customer wants and perhaps would like to see them upstream. The sofdsnoop traces FDs passed through unix sockets: # ./sofdsnoop ACTION TID COMM SOCKET FD N