netdev - [PATCH net 0/2] add checking sq is full inside xdp xmit

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Date:   Mon,  6 Mar 2023 12:15:33 +0800
From:   Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To:     netdev@...r.kernel.org
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        virtualization@...ts.linux-foundation.org, bpf@...r.kernel.org
Subject: [PATCH net 0/2] add checking sq is full inside xdp xmit

If the queue of xdp xmit is not an independent queue, then when the xdp
xmit used all the desc, the xmit from the __dev_queue_xmit() may encounter
the following error.

net ens4: Unexpected TXQ (0) queue failure: -28

This patch adds a check whether sq is full in XDP Xmit.

Thanks.

Xuan Zhuo (2):
  virtio_net: separate the logic of checking whether sq is full
  virtio_net: add checking sq is full inside xdp xmit

 drivers/net/virtio_net.c | 78 ++++++++++++++++++++++++----------------
 1 file changed, 47 insertions(+), 31 deletions(-)

--
2.32.0.3.g01195cf9f