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d34e3e1813
On devices that support TC U32 offloads, this flag enables a filter to be
added only to HW. 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 p4p1 ingress
# enable hw tc offload.
ethtool -K p4p1 hw-tc-offload on
# add u32 filter with skip-sw flag.
tc filter add dev p4p1 parent ffff: protocol ip prio 99 \
handle 800:0:1 u32 ht 800: flowid 800:1 \
skip-sw \
match ip src 192.168.1.0/24 \
action drop
# add u32 filter with skip-hw flag.
tc filter add dev p4p1 parent ffff: protocol ip prio 99 \
handle 800:0:2 u32 ht 800: flowid 800:2 \
skip-hw \
match ip src 192.168.2.0/24 \
action drop
Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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