diff options
| author |   Jesper Dangaard Brouer <brouer@redhat.com> | 2018-05-31 10:59:52 +0200 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2018-06-03 08:11:34 -0700 |
| commit | cdb57ed07fafb79a250e62d714b8910f2d341ef2 (patch) | |
| tree | 353ca80fdedcf529ed7aed7b82f0c9e17ffadfe5 /drivers/net/ethernet/intel/i40e | |
| parent | xdp: add flags argument to ndo_xdp_xmit API (diff) | |
| download | linux-dev-cdb57ed07fafb79a250e62d714b8910f2d341ef2.tar.xz linux-dev-cdb57ed07fafb79a250e62d714b8910f2d341ef2.zip | |
i40e: implement flush flag for ndo_xdp_xmit
When passed the XDP_XMIT_FLUSH flag i40e_xdp_xmit now performs the
same kind of ring tail update as in i40e_xdp_flush. The advantage is
that all the necessary checks have been performed and xdp_ring can be
updated, instead of having to perform the exact same steps/checks in
i40e_xdp_flush
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index c0451d6e0790..5f01e4ce9c92 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -3676,6 +3676,7 @@ int i40e_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, struct i40e_netdev_priv *np = netdev_priv(dev); unsigned int queue_index = smp_processor_id(); struct i40e_vsi *vsi = np->vsi; + struct i40e_ring *xdp_ring; int drops = 0; int i; @@ -3685,20 +3686,25 @@ int i40e_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, if (!i40e_enabled_xdp_vsi(vsi) || queue_index >= vsi->num_queue_pairs) return -ENXIO; - if (unlikely(flags & ~XDP_XMIT_FLAGS_NONE)) + if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) return -EINVAL; + xdp_ring = vsi->xdp_rings[queue_index]; + for (i = 0; i < n; i++) { struct xdp_frame *xdpf = frames[i]; int err; - err = i40e_xmit_xdp_ring(xdpf, vsi->xdp_rings[queue_index]); + err = i40e_xmit_xdp_ring(xdpf, xdp_ring); if (err != I40E_XDP_TX) { xdp_return_frame_rx_napi(xdpf); drops++; } } + if (unlikely(flags & XDP_XMIT_FLUSH)) + i40e_xdp_ring_update_tail(xdp_ring); + return n - drops; } |