Displaying 10 results from an estimated 10 matches for "do_xdp_prog".
2016 Dec 23
0
[PATCH net 9/9] virtio-net: XDP support for small buffers
...;mergeable_rx_bufs) {
+ struct page *page = virt_to_head_page(xdp->data);
+
+ put_page(page);
+ } else /* small buffer */
+ kfree_skb(data);
return; // On error abort to avoid unnecessary kick
}
@@ -366,23 +391,26 @@ static void virtnet_xdp_xmit(struct virtnet_info *vi,
static u32 do_xdp_prog(struct virtnet_info *vi,
struct receive_queue *rq,
struct bpf_prog *xdp_prog,
- struct page *page, int offset, int len)
+ void *data, int len)
{
int hdr_padded_len;
struct xdp_buff xdp;
+ void *buf;
unsigned int qp;
u32 act;
- u8 *buf;
-
- buf = page_add...
2016 Dec 23
21
[PATCH net 0/9] several fixups for virtio-net XDP
Merry Xmas and a Happy New year to all:
This series tries to fixes several issues for virtio-net XDP which
could be categorized into several parts:
- fix several issues during XDP linearizing
- allow csumed packet to work for XDP_PASS
- make EWMA rxbuf size estimation works for XDP
- forbid XDP when GUEST_UFO is support
- remove big packet XDP support
- add XDP support or small buffer
Please
2016 Dec 23
21
[PATCH net 0/9] several fixups for virtio-net XDP
Merry Xmas and a Happy New year to all:
This series tries to fixes several issues for virtio-net XDP which
could be categorized into several parts:
- fix several issues during XDP linearizing
- allow csumed packet to work for XDP_PASS
- make EWMA rxbuf size estimation works for XDP
- forbid XDP when GUEST_UFO is support
- remove big packet XDP support
- add XDP support or small buffer
Please
2016 Dec 23
1
[RFC PATCH] virtio_net: XDP support for adjust_head
....1a93158 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -159,6 +159,9 @@ struct virtnet_info {
/* Ethtool settings */
u8 duplex;
u32 speed;
+
+ /* Headroom allocated in RX Queue */
+ unsigned int headroom;
};
struct padded_vnet_hdr {
@@ -392,6 +395,7 @@ static u32 do_xdp_prog(struct virtnet_info *vi,
else
hdr_padded_len = sizeof(struct padded_vnet_hdr);
+ xdp.data_hard_start = buf - vi->headroom;
xdp.data = buf + hdr_padded_len;
xdp.data_end = xdp.data + (len - vi->hdr_len);
@@ -430,9 +434,12 @@ static struct sk_buff *receive_big(struct net_device *de...
2016 Dec 23
1
[RFC PATCH] virtio_net: XDP support for adjust_head
....1a93158 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -159,6 +159,9 @@ struct virtnet_info {
/* Ethtool settings */
u8 duplex;
u32 speed;
+
+ /* Headroom allocated in RX Queue */
+ unsigned int headroom;
};
struct padded_vnet_hdr {
@@ -392,6 +395,7 @@ static u32 do_xdp_prog(struct virtnet_info *vi,
else
hdr_padded_len = sizeof(struct padded_vnet_hdr);
+ xdp.data_hard_start = buf - vi->headroom;
xdp.data = buf + hdr_padded_len;
xdp.data_end = xdp.data + (len - vi->hdr_len);
@@ -430,9 +434,12 @@ static struct sk_buff *receive_big(struct net_device *de...
2016 Dec 23
0
[PATCH net 2/9] virtio-net: correctly xmit linearized page on XDP_TX
..._net.c b/drivers/net/virtio_net.c
index 1067253..fe4562d 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -572,7 +572,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
if (unlikely(hdr->hdr.gso_type || hdr->hdr.flags))
goto err_xdp;
- act = do_xdp_prog(vi, rq, xdp_prog, page, offset, len);
+ act = do_xdp_prog(vi, rq, xdp_prog, xdp_page, offset, len);
switch (act) {
case XDP_PASS:
if (unlikely(xdp_page != page))
--
2.7.4
2016 Dec 23
0
[PATCH net 5/9] virtio-net: unbreak csumed packets for XDP_PASS
....c
+++ b/drivers/net/virtio_net.c
@@ -440,7 +440,7 @@ static struct sk_buff *receive_big(struct net_device *dev,
struct virtio_net_hdr_mrg_rxbuf *hdr = buf;
u32 act;
- if (unlikely(hdr->hdr.gso_type || hdr->hdr.flags))
+ if (unlikely(hdr->hdr.gso_type))
goto err_xdp;
act = do_xdp_prog(vi, rq, xdp_prog, page, 0, len);
switch (act) {
@@ -572,7 +572,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
* the receive path after XDP is loaded. In practice I
* was not able to create this condition.
*/
- if (unlikely(hdr->hdr.gso_type || hdr->hdr.f...
2016 Dec 23
1
[PATCH net 4/9] virtio-net: correctly handle XDP_PASS for linearized packets
...eletions(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 58ad40e..470293e 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -578,8 +578,14 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
> act = do_xdp_prog(vi, rq, xdp_prog, xdp_page, offset, len);
> switch (act) {
> case XDP_PASS:
> - if (unlikely(xdp_page != page))
> - __free_pages(xdp_page, 0);
> + /* We can only create skb based on xdp_page. */
> + if (unlikely(xdp_page != page)) {
> + rcu_read_unlock();
>...
2016 Dec 23
1
[PATCH net 4/9] virtio-net: correctly handle XDP_PASS for linearized packets
...eletions(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 58ad40e..470293e 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -578,8 +578,14 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
> act = do_xdp_prog(vi, rq, xdp_prog, xdp_page, offset, len);
> switch (act) {
> case XDP_PASS:
> - if (unlikely(xdp_page != page))
> - __free_pages(xdp_page, 0);
> + /* We can only create skb based on xdp_page. */
> + if (unlikely(xdp_page != page)) {
> + rcu_read_unlock();
>...
2016 Dec 23
0
[PATCH net 4/9] virtio-net: correctly handle XDP_PASS for linearized packets
...file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 58ad40e..470293e 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -578,8 +578,14 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
act = do_xdp_prog(vi, rq, xdp_prog, xdp_page, offset, len);
switch (act) {
case XDP_PASS:
- if (unlikely(xdp_page != page))
- __free_pages(xdp_page, 0);
+ /* We can only create skb based on xdp_page. */
+ if (unlikely(xdp_page != page)) {
+ rcu_read_unlock();
+ put_page(page);
+ head_skb = pa...