[PATCH] net/af_xdp: fix shared umem fill queue reserve

[Thomas Monjalon]

11/03/2022 14:45, Ciara Loftus:
> Commit 81fe6720f84f ("net/af_xdp: reserve fill queue before socket create")
> moves the fill queue reserve logic to before the creation of the socket in
> order to suppress kernel logs like:
> 
> XSK buffer pool does not provide enough addresses to fill 2047 buffers on
> Rx ring 0
> 
> However, for queues that share umem, the fill queue reserve must occur
> after the socket creation, because the fill queue is not valid until
> that point.
> 
> This commit uses the umem refcnt value to determine whether the queue is
> sharing a umem, and performs the fill queue reservation either before or
> after the socket creation, depending on the refcnt value.
> 
> The kernel logs will still be seen for the shared umem queues.
> 
> Fixes: 81fe6720f84f ("net/af_xdp: reserve fill queue before socket create")
> 
> Signed-off-by: Ciara Loftus <ciara.loftus at intel.com>

Applied, thanks.