While investigating NPU-relevant issues, the following npu_state_err flags in the session table entry could help you identify the cause of the problem.
bit 0: npu shaper deny, can't install npu shaper
bit 1: npu accounting deny, can't install npu accounting
bit 2: npu protocol check deny, there is something wrong on protocol state check, can't pass it to npu for processing
bit 3: npu invalid protocol, npu can't handle this protocol
bit 4: npu ipsec tunnel deny,
bit 5: npu header deny, can't set npu header
bit 6: npu macvlan bridge deny and rst_tcp meanings tcp timeout reset
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