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Message-Id: <4497004c8ba06fdb621689e40c2f801c493c83ea.1701929854.git.hengqi@linux.alibaba.com>
Date: Thu, 7 Dec 2023 14:29:17 +0800
From: Heng Qi <hengqi@...ux.alibaba.com>
To: netdev@...r.kernel.org,
virtualization@...ts.linux-foundation.org
Cc: jasowang@...hat.com,
mst@...hat.com,
pabeni@...hat.com,
kuba@...nel.org,
yinjun.zhang@...igine.com,
edumazet@...gle.com,
davem@...emloft.net,
hawk@...nel.org,
john.fastabend@...il.com,
ast@...nel.org,
horms@...nel.org,
xuanzhuo@...ux.alibaba.com
Subject: [PATCH net-next v7 1/4] virtio-net: returns whether napi is complete
rx netdim needs to count the traffic during a complete napi process,
and start updating and comparing samples to make decisions after
the napi ends. Let virtqueue_napi_complete() return true if napi is done,
otherwise vice versa.
Signed-off-by: Heng Qi <hengqi@...ux.alibaba.com>
Acked-by: Jason Wang <jasowang@...hat.com>
---
drivers/net/virtio_net.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index d16f592c2061..0ad2894e6a5e 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -431,7 +431,7 @@ static void virtqueue_napi_schedule(struct napi_struct *napi,
}
}
-static void virtqueue_napi_complete(struct napi_struct *napi,
+static bool virtqueue_napi_complete(struct napi_struct *napi,
struct virtqueue *vq, int processed)
{
int opaque;
@@ -440,9 +440,13 @@ static void virtqueue_napi_complete(struct napi_struct *napi,
if (napi_complete_done(napi, processed)) {
if (unlikely(virtqueue_poll(vq, opaque)))
virtqueue_napi_schedule(napi, vq);
+ else
+ return true;
} else {
virtqueue_disable_cb(vq);
}
+
+ return false;
}
static void skb_xmit_done(struct virtqueue *vq)
--
2.19.1.6.gb485710b
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