xdp: add reporting of offload mode
authorJakub Kicinski <jakub.kicinski@netronome.com>
Thu, 22 Jun 2017 01:25:09 +0000 (18:25 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 23 Jun 2017 17:42:20 +0000 (13:42 -0400)
commitce158e580a5bdc93286a3b630638bdd47d4ec663
tree7273eafe12b38183b57db46abcf7da7dc6139c3c
parentcafa92ac255337517ca2466ab05ca9f24c0ca9de
xdp: add reporting of offload mode

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>
include/linux/netdevice.h
include/uapi/linux/if_link.h
net/core/dev.c
net/core/rtnetlink.c