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authorToshiaki Makita <makita.toshiaki@lab.ntt.co.jp>2018-07-23 17:36:07 +0300
committerDavid S. Miller <davem@davemloft.net>2018-07-25 22:53:37 +0300
commit2a43565c06465323e33b117bcf2ce604c0594659 (patch)
treeb72459fa91fee9d6848186b22c3ae5a964cf9746 /drivers/net/virtio_net.c
parent2c4a2f7d826329966e8ab86f842a95d3234c64da (diff)
downloadlinux-2a43565c06465323e33b117bcf2ce604c0594659.tar.xz
virtio_net: Factor out the logic to determine xdp sq
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>
Diffstat (limited to 'drivers/net/virtio_net.c')
-rw-r--r--drivers/net/virtio_net.c22
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 7a47ce750a43..eca9b13b859e 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -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);
}