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xdp: add HW offload mode flag for installing programs

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Add an installation-time flag for requesting that the program
be installed only if it can be offloaded to HW.

Internally new command for ndo_xdp is added, this way we avoid
putting checks into drivers since they all return -EINVAL on
an unknown command.

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 18:25:04 -07:00 • committed by David S. Miller
parent 32d602771b
commit ee5d032f7d
4 changed files with 13 additions and 6 deletions
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1
include/linux/netdevice.h
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@ -807,6 +807,7 @@ enum xdp_netdev_command {
* when it is no longer used.
*/
XDP_SETUP_PROG,
XDP_SETUP_PROG_HW,
/* Check if a bpf program is set on the device. The callee should
* return true if a program is currently attached and running.
*/