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| author | Xuan Zhuo <xuanzhuo@linux.alibaba.com> | 2023-05-08 14:14:13 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-05-09 19:44:27 -0700 |
| commit | fc8ce84b09bcc7306f3128f783967ecbfa617207 (patch) | |
| tree | aacbc8947a4d3389f9b194783fce736b8f7085ff /drivers/net/virtio_net.c | |
| parent | c5f3e72f04c02cc2a0671adbb16224e61dc4bd8a (diff) | |
| download | lwn-fc8ce84b09bcc7306f3128f783967ecbfa617207.tar.gz lwn-fc8ce84b09bcc7306f3128f783967ecbfa617207.zip | |
virtio_net: small: remove the delta
In the case of XDP-PASS, skb_reserve uses the "delta" to compatible
non-XDP, now that is not shared between xdp and non-xdp, so we can
remove this logic.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/virtio_net.c')
| -rw-r--r-- | drivers/net/virtio_net.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index bc3bf190e614..abf4ddcb686e 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -949,9 +949,7 @@ static struct sk_buff *receive_small_xdp(struct net_device *dev, unsigned int buflen; struct xdp_buff xdp; struct sk_buff *skb; - unsigned int delta = 0; unsigned int metasize = 0; - void *orig_data; u32 act; if (unlikely(hdr->hdr.gso_type)) @@ -984,14 +982,12 @@ static struct sk_buff *receive_small_xdp(struct net_device *dev, xdp_init_buff(&xdp, buflen, &rq->xdp_rxq); xdp_prepare_buff(&xdp, buf + VIRTNET_RX_PAD + vi->hdr_len, xdp_headroom, len, true); - orig_data = xdp.data; act = virtnet_xdp_handler(xdp_prog, &xdp, dev, xdp_xmit, stats); switch (act) { case XDP_PASS: /* Recalculate length in case bpf program changed it */ - delta = orig_data - xdp.data; len = xdp.data_end - xdp.data; metasize = xdp.data - xdp.data_meta; break; @@ -1008,7 +1004,7 @@ static struct sk_buff *receive_small_xdp(struct net_device *dev, if (!skb) goto err; - skb_reserve(skb, headroom - delta); + skb_reserve(skb, xdp.data - buf); skb_put(skb, len); if (metasize) skb_metadata_set(skb, metasize); |