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| author | John Fastabend <john.fastabend@gmail.com> | 2017-07-17 09:27:07 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-17 09:48:05 -0700 |
| commit | 814abfabef3ceed390c10d06a0cc69a86454b6cf (patch) | |
| tree | fe6ae9f9007124e1ddd76efd152f5d60db0a5bd9 /include/uapi | |
| parent | d445516966dcb2924741b13b27738b54df2af01a (diff) | |
| download | op-kernel-dev-814abfabef3ceed390c10d06a0cc69a86454b6cf.zip op-kernel-dev-814abfabef3ceed390c10d06a0cc69a86454b6cf.tar.gz | |
xdp: add bpf_redirect helper function
This adds support for a bpf_redirect helper function to the XDP
infrastructure. For now this only supports redirecting to the egress
path of a port.
In order to support drivers handling a xdp_buff natively this patches
uses a new ndo operation ndo_xdp_xmit() that takes pushes a xdp_buff
to the specified device.
If the program specifies either (a) an unknown device or (b) a device
that does not support the operation a BPF warning is thrown and the
XDP_ABORTED error code is returned.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/bpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index e99e3e6..4dbb7a3 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -717,6 +717,7 @@ enum xdp_action { XDP_DROP, XDP_PASS, XDP_TX, + XDP_REDIRECT, }; /* user accessible metadata for XDP packet hook |
