Bug 128 - AVX became unaccessible when trying to assign vlan to VF

Review Request #50 — Created Oct. 13, 2023 and updated — Latest diff uploaded

Information
timlai
AVX2
rel_avx_2_7_2
128
Reviewers
jasonchou, peteryeh, wli 
Root cause:

    When using spin_lock() and usleep_range() at the same time, it cause race condition.


Solution:

    Patch modification in newer i40e driver source code

        1. Use udelay instead of usleep_range

        2. Avoid use spin_lock() and usleep_range() at the same time
AVX#tail -f /var/log/messages

Oct 13 17:57:29 AN kernel: i40e 0000:60:00.0: VF 0 has already configured VLAN filters and the administrator is requesting a port VLAN override.#012Please unload and reload the VF driver for this change to take effect.

Oct 13 17:57:29 AN kernel: i40e 0000:60:00.0: VF 0 cannot do promisc due to not promisc or pf has set it

Oct 13 17:57:29 AN kernel: i40e 0000:60:00.0: Setting VLAN 6, QOS 0x0 on VF 0

Oct 13 17:57:29 AN backend: avx_system [/usr/sbin/ip link set enp96s0f0 vf 0 vlan 6] 0,1,0

Oct 13 17:57:29 AN backend: port1,enp96s0f0 vf 0 has been set vlan 6
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