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virtio_net: Factor out the logic to determine xdp sq

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Make sure to use the same logic in all places to determine xdp sq. This
is useful for xdp counters which the following commit will introduce as
well.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Toshiaki Makita 2018-07-23 23:36:07 +09:00 committed by David S. Miller
parent 2c4a2f7d82
commit 2a43565c06
1 changed files with 12 additions and 10 deletions
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22
drivers/net/virtio_net.c
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@ -457,16 +457,22 @@ static int __virtnet_xdp_xmit_one(struct virtnet_info *vi,
return 0;
}
static struct send_queue *virtnet_xdp_sq(struct virtnet_info *vi)
{
unsigned int qp;
qp = vi->curr_queue_pairs - vi->xdp_queue_pairs + smp_processor_id();
return &vi->sq[qp];
}
static int __virtnet_xdp_tx_xmit(struct virtnet_info *vi,
struct xdp_frame *xdpf)
{
struct xdp_frame *xdpf_sent;
struct send_queue *sq;
unsigned int len;
unsigned int qp;
qp = vi->curr_queue_pairs - vi->xdp_queue_pairs + smp_processor_id();
sq = &vi->sq[qp];
sq = virtnet_xdp_sq(vi);
/* Free up any pending old buffers before queueing new ones. */
while ((xdpf_sent = virtqueue_get_buf(sq->vq, &len)) != NULL)
@ -484,7 +490,6 @@ static int virtnet_xdp_xmit(struct net_device *dev,
struct bpf_prog *xdp_prog;
struct send_queue *sq;
unsigned int len;
unsigned int qp;
int drops = 0;
int err;
int i;
@ -492,8 +497,7 @@ static int virtnet_xdp_xmit(struct net_device *dev,
if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
return -EINVAL;
qp = vi->curr_queue_pairs - vi->xdp_queue_pairs + smp_processor_id();
sq = &vi->sq[qp];
sq = virtnet_xdp_sq(vi);
/* Only allow ndo_xdp_xmit if XDP is loaded on dev, as this
* indicate XDP resources have been successfully allocated.
@ -1349,7 +1353,7 @@ static int virtnet_poll(struct napi_struct *napi, int budget)
container_of(napi, struct receive_queue, napi);
struct virtnet_info *vi = rq->vq->vdev->priv;
struct send_queue *sq;
unsigned int received, qp;
unsigned int received;
unsigned int xdp_xmit = 0;
virtnet_poll_cleantx(rq);
@ -1364,9 +1368,7 @@ static int virtnet_poll(struct napi_struct *napi, int budget)
xdp_do_flush_map();
if (xdp_xmit & VIRTIO_XDP_TX) {
qp = vi->curr_queue_pairs - vi->xdp_queue_pairs +
smp_processor_id();
sq = &vi->sq[qp];
sq = virtnet_xdp_sq(vi);
virtqueue_kick(sq->vq);
}