DPDK Flow Filtering Not Working as Expected

[Dmitry Kozlyuk]

2025-02-03 14:51 (UTC+0100), Sid ali cherrati:
> [...]
> if (!rte_flow_validate(port_id, &attr, pattern, actions, &error)){
> flow = rte_flow_create(port_id, &attr, pattern, actions, &error);
> }
> 
> if(flow != 0){
> printf("Filed to create drop flow filter \n");
> return -1;
> }
> [...] 
> The issue is that when I implement this, I get an error on the drop filter:
> "Failed to create rule." Do you have any idea why this might be happening?

There is no this exact error text in your code or DPDK,
I assume we're talking about the quoted fragment.
`flow` is a pointer, the correct error condition is `if (flow == NULL)`,
so your code probably misinterprets success as error.
Also `flow` is not assigned if `rte_flow_validate()` returns non-0.