Re: [EXTERNAL] [PATCH net] octeontx2-af: cn10k: restrict LMTLINE sharing to same PF

[Junrui Luo]

On Wed, May 27, 2026 at 05:20:12AM +0000, Geethasowjanya Akula wrote:
> Hi Junrui and Jakub,
> 
> This patch enforces that the requester’s pcifunc and req->base_pcifunc belong to the same PF.
> However, this assumption is not always valid.
> We have valid use cases where LMTST lines are intentionally shared across multiple PFs. In such scenarios, 
> the base_pcifunc may legitimately belong to a different PF, and restricting access to the same PF would 
> break these existing use cases.
   
Thanks for the review. To preserve cross-PF sharing while still
restricting VF callers, would the check below match your expectation?

	if (is_vf(req->hdr.pcifunc) &&
	    rvu_get_pf(rvu->pdev, req->hdr.pcifunc) !=
	    rvu_get_pf(rvu->pdev, req->base_pcifunc))
	        return -EPERM;

Thanks,
Junrui Luo