[dpdk-dev] [PATCH v2] net/af_xdp: don't allow umem sharing for xsks with same ctx

[Ferruh Yigit]

On 10/13/2020 2:10 PM, Ciara Loftus wrote:
> AF_XDP PMDs who wish to share a UMEM must have a unique context
> (ctx) ie. netdev,qid tuple. For instance, the following will not
> work since both PMDs' contexts are identical.
> 
>    --vdev net_af_xdp0,iface=ens786f1,start_queue=0,shared_umem=1
>    --vdev net_af_xdp1,iface=ens786f1,start_queue=0,shared_umem=1
> 
> Supporting this scenario would require locks, which would impact
> the performance of the more typical cases - xsks with different
> netdev,qid tuples.
> 
 > Fixes: 74b46340e2d4 ("net/af_xdp: support shared UMEM")
 >
> Signed-off-by: Ciara Loftus <ciara.loftus at intel.com>
 >

Applied to dpdk-next-net/main, thanks.