Hi,
just quickly, because I am on a run:
On Sun, Apr 30, 2017, at 04:06, Alexei Starovoitov wrote:
> On 4/28/17 2:13 PM, Hannes Frederic Sowa wrote:
> >
> > Let's assume the following program with a constant key lookup and
> > different tables:
> >
> > action = bpf_map_lookup_elem(, 0);
> > if
On 4/28/17 2:13 PM, Hannes Frederic Sowa wrote:
Let's assume the following program with a constant key lookup and
different tables:
action = bpf_map_lookup_elem(, 0);
if (!*action)
return XDP_DROP;
else
return bpf_redirect(skb->ifindex, 0);
It does something completely
Hello,
On 28.04.2017 21:31, Alexei Starovoitov wrote:
>> jit on:
>>
>> perf record -e bpf_redirect -agR
>>
>> The unwinder walks the stack, extracts address of upper function and
>> sends it to user space (perf) or handles it inside the kernel/kallsyms
>> (ftrace).
>>
>> User takes tag of bpf
On 4/28/17 4:50 AM, Hannes Frederic Sowa wrote:
Hello Alexei,
On 28.04.2017 03:11, Alexei Starovoitov wrote:
On 4/27/17 6:36 AM, Hannes Frederic Sowa wrote:
On 27.04.2017 08:24, Martin KaFai Lau wrote:
This patchset introduces the bpf_prog ID and a new bpf cmd to
iterate all bpf_prog in the
On 28.04.2017 20:51, Hannes Frederic Sowa wrote:
> Doesn't this break if I have 2 mlx4 cards in the system with different
> XDP programs attached? I would have to add an additional parameter to
> one of the mlx4 functions to extract the net_device pointer to make the
> correlation then. Probably
Hello,
On 28.04.2017 20:24, Daniel Borkmann wrote:
> On 04/28/2017 01:50 PM, Hannes Frederic Sowa wrote:
>> On 28.04.2017 03:11, Alexei Starovoitov wrote:
> [...]
>>> i disagree re: kallsyms. The goal of prog_tag is to let program writers
>>> understand which program is running in a stable way.
On 04/28/2017 01:50 PM, Hannes Frederic Sowa wrote:
On 28.04.2017 03:11, Alexei Starovoitov wrote:
[...]
i disagree re: kallsyms. The goal of prog_tag is to let program writers
understand which program is running in a stable way.
But exactly it doesn't let program writers do that, it just
Hello Alexei,
On 28.04.2017 03:11, Alexei Starovoitov wrote:
> On 4/27/17 6:36 AM, Hannes Frederic Sowa wrote:
>> On 27.04.2017 08:24, Martin KaFai Lau wrote:
>>> This patchset introduces the bpf_prog ID and a new bpf cmd to
>>> iterate all bpf_prog in the system.
>>>
>>> It is still incomplete.
On 4/27/17 6:36 AM, Hannes Frederic Sowa wrote:
On 27.04.2017 08:24, Martin KaFai Lau wrote:
This patchset introduces the bpf_prog ID and a new bpf cmd to
iterate all bpf_prog in the system.
It is still incomplete. The idea can be extended to bpf_map.
Martin KaFai Lau (2):
bpf: Introduce
