how to restrict the BPDU flood logs.

This log means TC flag of BPDU packet received by the port is set. You need to check whether some ports in the network had changed up/down.
And you can configure TC protection on the device and it won’t affect the network

https://support.huawei.com/hedex ... 525253E&lang=en

stp tc-protection
After this command is configured, the device processes only one entry update every 2 seconds after receiving TC BPDUs. This reduces the number of CPU processing tasks caused by frequent MAC address entries and ARP entries.

arp topology-change disable
MAC-address update arp
After receiving a TC packet, the device clears the MAC address and ages the ARP entry by default. When there are a large number of ARP entries on the device, ARP learning will cause excessive ARP packets on the network. After arp topology-change disable and MAC-address update arp are configured, the outbound interface in the ARP entry can be updated based on the outbound interface of the MAC address when the network topology changes. This reduces the number of unnecessary ARP entries.

It’s not recommended to disable the STP, because in that situation there may be network loop, in which the serious result may be caused.