The example is made by two parts, a eBPF program that consumes elements from a FIFO queue and prints them in the screen and a user space application that inserts new elements into the queue each time

Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@...> --- tools/include/uapi/linux/bpf.h | 5 ++ tools/testing/selftests/bpf/test_maps.c | 71 +++++++++++++++++++++++++++++++ 2 files changed, 76 inse

Bpf queue implements a LIFO/FIFO data containers for ebpf programs. It allows to push an element to the queue by using the update operation and to pop an element from the queue by using the lookup ope

Hi, We will have a BPF hackfest in Berlin on September 26th and 27th, 10am to 5pm in the Kinvolk office. This is just before the All Systems Go! conference (https://all-systems-go.io/), so there will

Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@...> --- tools/include/uapi/linux/bpf.h | 5 ++ tools/testing/selftests/bpf/test_maps.c | 72 +++++++++++++++++++++++++++++++ 2 files changed, 77 inse

Bpf queue map is a new kind of map that provides a LIFO/FIFO queue implementation. In some applications, like a SNAT, it is necessary to keep track of a pool of free elemenets, network ports in this c

Hi All, I'm still working this issue https://github.com/iovisor/bcc/issues/1329. I have added tests under samples/bpf, here is test calling this new helper. Inside the container ping-10619 [000] d.s1

Hi All, Thanks for dialing in today. As usual, here are my notes. Cheers! -Brenden === Discussion === Brenden: * f28 and ubuntu18.04 support * 0.6.1 tagged with those packages * will try to get python

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 I am writing a bpf program for packet processing and have loaded my ingress function at BPF.XDP. I'm updating the destination IPv6 address and want to update the TCP checksum, but when I try to cal

Hi! Imagine I have an interpreter that runs some program in some custom language. If I were to get a stack trace, it would look like: sys_read() [k] read() execute_fn() execute_fn() execute_fn() execu

Hi, I have an eBPF map created and pinned by a userspace process. Now I would like several eBPF programs to access this pinned eBPF map. Is there any bcc APIs that can be used? BPF_TABLE(), etc create

Hi all, A while ago, I filed a bug with LLVM about __sync_add_and_fetch as compiled into eBPF code. https://bugs.llvm.org/show_bug.cgi?id=36573 Both it and __sync_fetch_and_add fail to return the corr

I'm hoping someone knows a workaround here. I have a char buf[128] and I'd like to write to arbitrary offsets, but keep hitting this error. Any workaround? I've included a sample bcc program below, wh

If not using ipv6, drop it in XDP. Signed-off-by: William Tu <u9012063@...> --- bpf/xdp.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/bpf/xdp.h b/bpf/xdp.h index 2d2102a6ba28

BPF datapath is always exact match. Signed-off-by: William Tu <u9012063@...> --- ofproto/ofproto-dpif-upcall.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/ofproto/ofproto-dpif-upcall.c b/ofp

Add a separate test file tests/system-bpf-traffic.at for bpf testing. The test cases are a subset of the existing system-traffic.at, and with additional bpf-specific tests. When test passes, the log f

VAGRANT_VAGRANTFILE=Vagrantfile-eBPF vagrant up Signed-off-by: William Tu <u9012063@...> Signed-off-by: Yifeng Sun <pkusunyifeng@...> --- Makefile.am | 1 + Vagrantfile-eBPF | 99 ++++++++++++++++++++++

From: Joe Stringer <joe@...> This new utility is used for standalone probing of BPF datapath state. Signed-off-by: Joe Stringer <joe@...> Signed-off-by: William Tu <u9012063@...> Signed-off-by: Yifeng

This patch adds the OVS-eBPF datapath implementation for dpif-bpf. Three stages are added: parse, lookup, and actions. Each stages are tail called to the next stage. When executing multiple actions, t