Now, we support AF_XDP(xsk). Add NETDEV_XDP_ACT_XSK_ZEROCOPY to
xdp_features.
Signed-off-by: Xuan Zhuo
Acked-by: Jason Wang
---
drivers/net/virtio_net.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 091e3ed0cafa..
Now, this API is useless. remove it.
Signed-off-by: Xuan Zhuo
---
drivers/virtio/virtio_ring.c | 48
include/linux/virtio.h | 2 --
2 files changed, 50 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 525308d
The subsequent commit needs to know whether every indirect buffer is
premapped or not. So we need to introduce an extra struct for every
indirect buffer to record this info.
Signed-off-by: Xuan Zhuo
---
drivers/virtio/virtio_ring.c | 60 +---
1 file changed, 36 in
The subsequent commit needs to know whether every indirect buffer is
premapped or not. So we need to introduce an extra struct for every
indirect buffer to record this info.
Signed-off-by: Xuan Zhuo
---
drivers/virtio/virtio_ring.c | 112 ---
1 file changed, 52 in
v2:
1. use new api to submit premapped buffer instead of using sgs to pass this
info
2. some small fixes for
http://lore.kernel.org/all/20240924013204.13763-1-xuanz...@linux.alibaba.com
v1:
1. some small fixes for
http://lore.kernel.org/all/20240820073330.9161-1-xuanz...@linux.alib
virtio-net rq submits premapped per-buffer by setting sg page to NULL;
Signed-off-by: Xuan Zhuo
---
drivers/net/virtio_net.c | 24 +---
1 file changed, 13 insertions(+), 11 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 792e9eadbfc3..0975
Two APIs are introduced to submit premapped per-buffers.
int virtqueue_add_inbuf_premapped(struct virtqueue *vq,
struct scatterlist *sg, unsigned int num,
void *data,
void *ctx,
Because the af-xdp will introduce a new xmit type, so I refactor the
xmit type mechanism first.
We know both xdp_frame and sk_buff are at least 4 bytes aligned.
For the xdp tx, we do not pass any pointer to virtio core as data,
we just need to pass the len of the packet. So we will push len
to the
To make the code readable, introduce vring_need_unmap_buffer() to
replace do_unmap.
use_dma_api premapped -> vring_need_unmap_buffer()
1. false falsefalse
2. truefalsetrue
3. truetrue false
Signed-off-by: Xuan Zhuo
Acked-by: Jason Wang
---
drive
This patch implement the logic of bind/unbind xsk pool to sq and rq.
Signed-off-by: Xuan Zhuo
Acked-by: Jason Wang
---
drivers/net/virtio_net.c | 53
1 file changed, 53 insertions(+)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index
The driver's tx napi is very important for XSK. It is responsible for
obtaining data from the XSK queue and sending it out.
At the beginning, we need to trigger tx napi.
virtnet_free_old_xmit distinguishes three type ptr(skb, xdp frame, xsk
buffer) by the last bits of the pointer.
Signed-off-by:
Since xsk's TX queue is consumed by TX NAPI, if sq is bound to xsk, then
we must stop tx napi from being disabled.
Signed-off-by: Xuan Zhuo
Acked-by: Jason Wang
---
drivers/net/virtio_net.c | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/net/virtio_net.c b/
Hi Xuan,
kernel test robot noticed the following build warnings:
[auto build test WARNING on net-next/main]
url:
https://github.com/intel-lab-lkp/linux/commits/Xuan-Zhuo/virtio_ring-introduce-vring_need_unmap_buffer/20241030-162739
base: net-next/main
patch link:
https
The current configuration sets the virtqueue (vq) to premapped mode,
implying that all buffers submitted to this queue must be mapped ahead
of time. This presents a challenge for the virtnet send queue (sq): the
virtnet driver would be required to keep track of dma information for vq
size * 17, whi
If send queue sent some packets, we update the tx timeout
record to prevent the tx timeout.
Signed-off-by: Xuan Zhuo
Acked-by: Jason Wang
---
drivers/net/virtio_net.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 4d00d73d808
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