|
HIF stands for Host interface and the HIF-Stats shows traffic handled between NP6XLite and the CPU. Drops often occur when the CPU cannot process packets quickly enough, usually due to high CPU load, traffic bursts, or buffer limits.
To investigate HIF-related drops run the following commands. It is best to execute them multiple times while the issue is present to see which counters are increasing.
fnsysctl date
fnsysctl cat /proc/net/np6xlite_0/hif-stats
fnsysctl cat /proc/net/np6xlite_0/hifdrop
diagnose npu np6xlite session-stats
fnsysctl cat /proc/net/np6xlite_0/hif-stats
Example output:
fnsysctl cat /proc/net/np6xlite_0/hif-st
rid rx_pkts tx_pkts egr_pkts byte_nr ipsec_rx ipsec_ar_d ipsec_ol ipt_rx skalloc_e nturbo_e
rx_drop tx_drop tx_full ipsec_vif ipsec_olv6 ipt_rx_d len_e
0 8810118 5902555 0 0 4112076 0 0 0 0 0
0 0 0 0 4973515 0 0
1 15223298 7048933 0 0 7823923 0 0 0 0 0
0 0 0 0 3714827 0 0
2 8669675 5853756 0 0 2291279 0 0 0 0 0
0 0 0 0 4527004 0 0
3 9169775 7274266 0 0 4111992 0 0 0 0 0
0 0 0 0 3641667 0 0
Key fields:
- rx_pkts: Packets received by the CPU from NP6XLite.
- tx_pkts: Packets sent from the CPU back to NP6XLite.
- egr_pkts: Packets egressed through NP (typically 0 in HIF context).
- ipsec_rx: Decrypted IPsec packets passed to the CPU.
- rx_drop: Packets dropped when receiving from NP.
- tx_drop: Packets dropped while sending to NP.
- tx_full: Transmit queue congestion – should ideally remain 0.
- nturbo_e: Errors in nTurbo fast-path software, indicating issues with CPU packet acceleration.
|
