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On devices that support TC flower offloads, these flags enable a filter to be added only to HW or only to SW. skip_sw and skip_hw are mutually exclusive flags. By default without any flags, the filter is added to both HW and SW, but no error checks are done in case of failure to add to HW. With skip-sw, failure to add to HW is treated as an error. Here is a sample script that adds 2 filters, one with skip_sw and the other with skip_hw flag. # add ingress qdisc tc qdisc add dev enp0s9 ingress # enable hw tc offload. ethtool -K enp0s9 hw-tc-offload on # add a flower filter with skip-sw flag. tc filter add dev enp0s9 protocol ip parent ffff: flower \ ip_proto 1 indev enp0s9 skip_sw \ action drop # add a flower filter with skip-hw flag. tc filter add dev enp0s9 protocol ip parent ffff: flower \ ip_proto 3 indev enp0s9 skip_hw \ action drop Signed-off-by: Amir Vadai <amirva@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> |
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