bpf: add XDP_TX xdp_action for direct forwarding

Brenden Blanco · davem330 · commit 6ce96ca348a9 · 2016-07-19T21:46:32.000-07:00
XDP enabled drivers must transmit received packets back out on the same
port they were received on when a program returns this action.

Signed-off-by: Brenden Blanco &lt;bblanco@plumgrid.com&gt;
Acked-by: Alexei Starovoitov &lt;ast@kernel.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
@@ -449,6 +449,7 @@ enum xdp_action {
 	XDP_ABORTED = 0,
 	XDP_DROP,
 	XDP_PASS,
+	XDP_TX,
 };
 
 /* user accessible metadata for XDP packet hook
