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xdp: add reporting of offload mode

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Extend the XDP_ATTACHED_* values to include offloaded mode.
Let drivers report whether program is installed in the driver
or the HW by changing the prog_attached field from bool to
u8 (type of the netlink attribute).

Exploit the fact that the value of XDP_ATTACHED_DRV is 1,
therefore since all drivers currently assign the mode with
double negation:
       mode = !!xdp_prog;
no drivers have to be modified.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2017-06-21 18:25:09 -07:00 • committed by David S. Miller
parent cafa92ac25
commit ce158e580a
4 changed files with 9 additions and 8 deletions
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1
include/uapi/linux/if_link.h
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@ -903,6 +903,7 @@ enum {
XDP_ATTACHED_NONE = 0,
XDP_ATTACHED_DRV,
XDP_ATTACHED_SKB,
XDP_ATTACHED_HW,
};
enum {