From: David Ahern <dsahern@gmail.com>
To: Peter Oskolkov <posk@google.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
netdev@vger.kernel.org
Cc: Peter Oskolkov <posk.devel@gmail.com>
Subject: Re: [PATCH bpf-next v5 0/5] bpf: add BPF_LWT_ENCAP_IP option to bpf_lwt_push_encap
Date: Thu, 31 Jan 2019 09:38:18 -0700 [thread overview]
Message-ID: <9a407aa4-0f2a-0770-108d-549602bbdb73@gmail.com> (raw)
In-Reply-To: <20190130235136.136527-1-posk@google.com>
On 1/30/19 4:51 PM, Peter Oskolkov wrote:
> This patchset implements BPF_LWT_ENCAP_IP mode in bpf_lwt_push_encap
> BPF helper. It enables BPF programs (specifically, BPF_PROG_TYPE_LWT_IN
> and BPF_PROG_TYPE_LWT_XMIT prog types) to add IP encapsulation headers
> to packets (e.g. IP/GRE, GUE, IPIP).
>
> This is useful when thousands of different short-lived flows should be
> encapped, each with different and dynamically determined destination.
> Although lwtunnels can be used in some of these scenarios, the ability
> to dynamically generate encap headers adds more flexibility, e.g.
> when routing depends on the state of the host (reflected in global bpf
> maps).
>
For the set:
Reviewed-by: David Ahern <dsahern@gmail.com>
prev parent reply other threads:[~2019-01-31 16:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-30 23:51 [PATCH bpf-next v5 0/5] bpf: add BPF_LWT_ENCAP_IP option to bpf_lwt_push_encap Peter Oskolkov
2019-01-30 23:51 ` [PATCH bpf-next v5 1/5] bpf: add plumbing for BPF_LWT_ENCAP_IP in bpf_lwt_push_encap Peter Oskolkov
2019-01-30 23:51 ` [PATCH bpf-next v5 2/5] bpf: implement BPF_LWT_ENCAP_IP mode " Peter Oskolkov
2019-01-31 23:43 ` Daniel Borkmann
2019-02-01 1:47 ` Willem de Bruijn
2019-02-01 16:48 ` Peter Oskolkov
2019-01-30 23:51 ` [PATCH bpf-next v5 3/5] bpf: add handling of BPF_LWT_REROUTE to lwt_bpf.c Peter Oskolkov
2019-01-30 23:51 ` [PATCH bpf-next v5 4/5] bpf: sync <kdir>/<uapi>/bpf.h with tools/<uapi>/bpf.h Peter Oskolkov
2019-01-30 23:51 ` [PATCH bpf-next v5 5/5] selftests: bpf: add test_lwt_ip_encap selftest Peter Oskolkov
2019-01-31 16:38 ` David Ahern [this message]
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