Re: running an eBPF program

Hi,
Thanks for your reply. Where do I need to add this workaround?

Thanks,
Adel

On Mon, May 29, 2017 at 8:31 AM, Y Song [off-list ref] wrote:

On Sun, May 28, 2017 at 12:38 AM, Adel Fuchs [off-list ref] wrote:

quoted

Hi,
Is there any way to run this eBPF program without that patch?
Alternatively, is there any other eBPF sample that does run properly? I need
to run a program that filters packets according to IP address or port.

The following is temporary workaround you can use:
        int poff, nh_off = BPF_LL_OFF + ETH_HLEN;
-       __be16 proto = skb->protocol;
+       __be16 proto = (__be16)*(volatile __u32 *)&skb->protocol;
        __u8 ip_proto;