bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-07-08 00:23:23 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

xdp: add bpf_redirect helper function

Browse source 
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>
This commit is contained in:
John Fastabend 2017-07-17 09:27:07 -07:00 • committed by David S. Miller
parent d445516966
commit 814abfabef
4 changed files with 63 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/uapi/linux/bpf.h
View file

@ -717,6 +717,7 @@ enum xdp_action {
XDP_DROP,
XDP_PASS,
XDP_TX,
XDP_REDIRECT,
};
/* user accessible metadata for XDP packet hook