https://bugs.dpdk.org/show_bug.cgi?id=1382
Bug ID: 1382
Summary: tap device does not support multiple flow rules with
same priority
Product: DPDK
Version: 23.11
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: ethdev
Assignee: dev@dpdk.org
Reporter: step...@networkplumber.org
Target Milestone: ---
Internally TAP device appears to be using priority as TC index. Which leads to
the following buggy behavior. Drivers should allow multiple flow rules with
same priority.
testpmd> flow create 0 priority 2 ingress pattern eth src is 06:05:04:03:02:01
/ end actions queue index 2 / end
Flow rule #0 created
testpmd> flow create 0 priority 2 ingress pattern eth src is 06:05:04:03:02:00
/ end actions queue index 3 / end
tap_nl_dump_ext_ack(): Filter already exists
tap_flow_create(): Kernel refused TC filter rule creation (17): File exists
port_flow_complain(): Caught PMD error type 2 (flow rule (handle)): overlapping
rules or Kernel too old for flower support: File exists
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