Thu, Apr 02, 2015 at 05:00:47PM CEST, daniel@xxxxxxxxxxxxx wrote:
>On 04/02/2015 02:12 AM, Alexei Starovoitov wrote:
>>Commit 608cd71a9c7c ("tc: bpf: generalize pedit action") has added the
>>possibility to mangle packet data to BPF programs in the tc pipeline.
>>This patch adds two helpers bpf_l3_csum_replace() and bpf_l4_csum_replace()
>>for fixing up the protocol checksums after the packet mangling.
>>
>>It also adds 'flags' argument to bpf_skb_store_bytes() helper to avoid
>>unnecessary checksum recomputations when BPF programs adjusting l3/l4
>>checksums and documents all three helpers in uapi header.
>>
>>Moreover, a sample program is added to show how BPF programs can make use
>>of the mangle and csum helpers.
>>
>>Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxxxx>
>
>I think in future we need to find a better place for these helpers,
>as they are for cls_bpf and act_bpf.
Yeah, makes sense to now have it in net/core/filter.c. How about to
create net/bpf dir for these?
>
>Acked-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
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