<palvarez=akamai.com@...> wrote: Pablo, I added the below comment in the bug report: === The table description for bpf_xadd operation is at BPFInstrInfo.td: // Atomics class

The following is an example in C++ to import an external map to BPF modules. https://github.com/iovisor/bcc/blob/master/examples/cpp/UseExternalMap.cc You can use libbpf function `bpf_obj_get` to get

The kernel needs to a constant offset from the stack for write. The corresponding kernel verifier code below: /* stack accesses must be at a fixed offset, so that we can

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

<palvarez=akamai.com@...> wrote: I added a comment to bugzilla. Thank you for bringing it up. It was considered a known quirk before, but we should improve it. __sync_add_and_fetch

Hi Daniel, Yes. If you look at the bug report, you will see that what it actually returns is some form of the increment. that is, __sync_add_and_fetch(myptr, increment) returns either increment or

Hi Pablo, I'm facing the same problem by compiling and running on kernel 4.15. Calls to __sync_fetch_and_add keeps returning the same value while the actual value has been incremented. Also I add

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

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

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

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

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

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

The patch initializes the bpf datapath when bridge starts. The check_support could be avoided since we know what datapath bpf program supports what feature. Signed-off-by: Joe Stringer

From: Joe Stringer <joe@...> Add an implementation of the API between the userspace "Open vSwitch Datapath Protocol" and the BPF datapath. Signed-off-by: Joe Stringer

From: Joe Stringer <joe@...> Implement a new datapath interface for use with BPF datapaths. Like dpif-netlink, dpif-bpf is backed by an implementation which resides within the kernel. It uses

From: Joe Stringer <joe@...> Through libbpf, the patch adds support for loading bpf program and maps, pinning the program and map to /sys/fs/bpf/ovs/, managing the file descriptor of each loaded

From: Joe Stringer <joe@...> A flow missed by the match action table in ebpf triggers an upcall, which forwards the information to ovs-vswitchd using skb_perf_event_output helper function. The

From: Joe Stringer <joe@...> To receive packets, an eBPF program has to be attached to a netdev through tc ingress/egress, an XDP program has to be attached to a netdev's xdp hook point. The