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xdp: add flags argument to ndo_xdp_xmit API

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This patch only change the API and reject any use of flags. This is an
intermediate step that allows us to implement the flush flag operation
later, for each individual driver in a separate patch.

The plan is to implement flush operation via XDP_XMIT_FLUSH flag
and then remove XDP_XMIT_FLAGS_NONE when done.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jesper Dangaard Brouer
2018-05-31 10:59:47 +02:00
committed by Alexei Starovoitov
parent 69b4507891
commit 42b3346898
9 changed files with 32 additions and 11 deletions
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5
drivers/net/virtio_net.c
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@@ -468,7 +468,7 @@ static int __virtnet_xdp_tx_xmit(struct virtnet_info *vi,
}
static int virtnet_xdp_xmit(struct net_device *dev,
int n, struct xdp_frame **frames)
int n, struct xdp_frame **frames, u32 flags)
{
struct virtnet_info *vi = netdev_priv(dev);
struct receive_queue *rq = vi->rq;
@@ -481,6 +481,9 @@ static int virtnet_xdp_xmit(struct net_device *dev,
int err;
int i;
if (unlikely(flags & ~XDP_XMIT_FLAGS_NONE))
return -EINVAL;
qp = vi->curr_queue_pairs - vi->xdp_queue_pairs + smp_processor_id();
sq = &vi->sq[qp];