samples/bpf: add option for native and skb mode for redirect apps
When testing with a driver that has both native and generic redirect support: $ sudo ./samples/bpf/xdp_redirect -N 5 6 input: 5 output: 6 ifindex 6: 4961879 pkt/s ifindex 6: 6391319 pkt/s ifindex 6: 6419468 pkt/s $ sudo ./samples/bpf/xdp_redirect -S 5 6 input: 5 output: 6 ifindex 6: 1845435 pkt/s ifindex 6: 3882850 pkt/s ifindex 6: 3893974 pkt/s $ sudo ./samples/bpf/xdp_redirect_map -N 5 6 input: 5 output: 6 map[0] (vports) = 4, map[1] (map) = 5, map[2] (count) = 0 ifindex 6: 2207374 pkt/s ifindex 6: 6212869 pkt/s ifindex 6: 6286515 pkt/s $ sudo ./samples/bpf/xdp_redirect_map -S 5 6 input: 5 output: 6 map[0] (vports) = 4, map[1] (map) = 5, map[2] (count) = 0 ifindex 6: 5052528 pkt/s ifindex 6: 5736631 pkt/s ifindex 6: 5739962 pkt/s Signed-off-by: Andy Gospodarek <andy@greyhouse.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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