We are pleased to announce the Call for Proposals (CFP) for the Networking and BPF track at the 2022 edition of the Linux Plumbers Conference (LPC), which is planned to be held in Dublin, Ireland, on

I installed on latest Raspbian (bullseye) with Snapcraft. However, when I tried to run hello_world.py with python3, I got modprobe: FATAL: Module kheaders not found in directory /lib/modules/5.10.63-v

Thought I added the #bcc tag but I no longer see it :( So just in case, it's not clear, this is with BCC.

Hi, Was wondering if there is a way to count the number of times map.ringbuf_reserve() fails for a BPF_RINGBUF_OUTPUT buffer? This way I can get notified in userspace that I have missed events, and mi

Dear all, how can I access the payload of the packet in a program attached to the TC egress hook (SCHED_CLS attached to clsact qdisc)? ctx->data_end points to the end of the L4 header, while on the in

Hi, Can someone please let me know that there is any way to get a CPU profile for a specific function using eBPF? Thanks & Regards, Ragalahari

This is a reminder for the Call for Proposals (CFP) for the Networking and BPF track at the 2021 edition of the Linux Plumbers Conference (LPC), which will be held virtually on the wider Internet, on

This is a reminder for the Call for Proposals (CFP) for the Networking and BPF track at the 2021 edition of the Linux Plumbers Conference (LPC), which will be held virtually on the wider Internet, on

Hi everyone, I am trying to use XDP to track outgoing traffic from docker containers deployed using docker swarm and running in a network using the driver overlay. I am using a simple xdp program base

Hi, Can someone please help me to pin a BPF map in custom path for a TC program. My requirement is pin a map in interface-specific path (like /sys/fs/bpf/eth0/) Regards, Ragalahari

Is there a reason why map.increment() internally copies the key into a stack variable? When building a key inline, it uses double the stack space and incurs the cost of a copy. For u64 keys this is fi

1. How do I attach `BPF_PROG_TYPE_SCHED_CLS`/`classifier` BPF programs to specific data path(i.e. ingress or egress) using libbpf ? I found some comments related in the source: ``` The **BPF_F_INGRESS

I still digging into this issue, and have hacked memleak/bcc to show addresses when they cant be resolved. In other places, I'm seeing jit complied java stack frames showing up alongside C ones, which

Hi, I’m just starting to come to grips with bcc & perf-map-agent for introspecting java on linux, with the goal of identifying what appears to be an off-heap memory leak (using memleak). I appear to b

We are pleased to announce the Call for Proposals (CFP) for the Networking and BPF track at the 2021 edition of the Linux Plumbers Conference (LPC), which is planned to be held in Dublin, Ireland, on

Hi, when I looked into the runqlen script yesterday, I found that, sadly, I misunderstood the "queue length" all the time not only the "length" part but also the "queue" part. Queue ===== Only CFS run

Hi! Is it possible to pass full ethernet packet from XDP to user-mode app using BCC? I wrote C code like this: BPF_PERF_OUTPUT(captured_data); int capture(struct xdp_md *ctx) { captured_data.perf_subm

I'v read this blog post https://facebookmicrosites.github.io/bpf/blog/2020/02/19/bpf-portability-and-co-re.html And want to apply this technique to my program: extern u32 LINUX_KERNEL_VERSION __kconfi

Hi, I'm looking into BTF and it's use case. Based on the document I understood to run BPF programs across different kernel versions, it needs to build with libbpf which depends on the BTF information.

Hello, I was wondering if BCC implements the new BPF feature (as of kernel 5.10) to allow BPF programs to utilize both BPF tail calls and BPF subprograms. This behavior is described near the end of th