On Mon, Jan 20, 2025 at 04:37:55PM +0000, Simon Horman wrote:
> On Mon, Jan 20, 2025 at 04:50:16PM +0100, Maciej Fijalkowski wrote:
> > Idea behind having ice_rx_buf::act was to simplify and speed up the Rx
> > data path by walking through buffers that were representing cleaned HW
> > Rx descriptors. Since it caused us a major headache recently and we
> > rolled back to old approach that 'puts' Rx buffers right after running
> > XDP prog/creating skb, this is useless now and should be removed.
> >
> > Get rid of ice_rx_buf::act and related logic. We still need to take care
> > of a corner case where XDP program releases a particular fragment.
> >
> > Make ice_run_xdp() to return its result and use it within
> > ice_put_rx_mbuf().
> >
> > Fixes: 2fba7dc5157b ("ice: Add support for XDP multi-buffer on Rx side")
> > Reviewed-by: Przemek Kitszel <[email protected]>
> > Signed-off-by: Maciej Fijalkowski <[email protected]>
> > ---
> > drivers/net/ethernet/intel/ice/ice_txrx.c | 60 +++++++++++--------
> > drivers/net/ethernet/intel/ice/ice_txrx.h | 1 -
> > drivers/net/ethernet/intel/ice/ice_txrx_lib.h | 43 -------------
> > 3 files changed, 35 insertions(+), 69 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c
> > b/drivers/net/ethernet/intel/ice/ice_txrx.c
> > index 9aa53ad2d8f2..77d75664c14d 100644
> > --- a/drivers/net/ethernet/intel/ice/ice_txrx.c
> > +++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
> > @@ -532,10 +532,10 @@ int ice_setup_rx_ring(struct ice_rx_ring *rx_ring)
> > *
> > * Returns any of ICE_XDP_{PASS, CONSUMED, TX, REDIR}
> > */
> > -static void
> > +static u32
> > ice_run_xdp(struct ice_rx_ring *rx_ring, struct xdp_buff *xdp,
> > struct bpf_prog *xdp_prog, struct ice_tx_ring *xdp_ring,
> > - struct ice_rx_buf *rx_buf, union ice_32b_rx_flex_desc *eop_desc)
> > + union ice_32b_rx_flex_desc *eop_desc)
> > {
> > unsigned int ret = ICE_XDP_PASS;
> > u32 act;
>
> nit: The Kernel doc for ice_run_xdp should also be updated to no
> longer document the rx_buf parameter.
Heh - but after making it to return the verdict again the return
description is valid:D
I have been missing the kdoc descriptions for introduced functions in this
patchset so let me add them as well.
Thanks for review!
>
> ...
