From: Alexander Lobakin <alobakin@pm.me>
To: "Magnus Karlsson" <magnus.karlsson@intel.com>,
"Björn Töpel" <bjorn@kernel.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Jonathan Lemon <jonathan.lemon@gmail.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>, KP Singh <kpsingh@kernel.org>,
Paolo Abeni <pabeni@redhat.com>,
Eric Dumazet <eric.dumazet@gmail.com>,
Xuan Zhuo <xuanzhuo@linux.alibaba.com>,
Dust Li <dust.li@linux.alibaba.com>,
Alexander Lobakin <alobakin@pm.me>,
virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
bpf@vger.kernel.org
Subject: [PATCH v5 bpf-next 4/6] virtio-net: support IFF_TX_SKB_NO_LINEAR
Date: Tue, 16 Feb 2021 14:34:39 +0000 [thread overview]
Message-ID: <20210216143333.5861-5-alobakin@pm.me> (raw)
In-Reply-To: <20210216143333.5861-1-alobakin@pm.me>
From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Virtio net supports the case where the skb linear space is empty, so add
priv_flags.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
---
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 ba8e63792549..f2ff6c3906c1 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2972,7 +2972,8 @@ static int virtnet_probe(struct virtio_device *vdev)
return -ENOMEM;
/* Set up network device as normal. */
- dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
+ dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE |
+ IFF_TX_SKB_NO_LINEAR;
dev->netdev_ops = &virtnet_netdev;
dev->features = NETIF_F_HIGHDMA;
--
2.30.1
next prev parent reply other threads:[~2021-02-16 14:38 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-16 14:33 [PATCH v5 bpf-next 0/6] xsk: build skb by page (aka generic zerocopy xmit) Alexander Lobakin
2021-02-16 14:34 ` [PATCH v5 bpf-next 1/6] netdev_priv_flags: add missing IFF_PHONY_HEADROOM self-definition Alexander Lobakin
2021-02-16 14:34 ` [PATCH v5 bpf-next 2/6] netdevice: check for net_device::priv_flags bitfield overflow Alexander Lobakin
2021-02-16 14:34 ` [PATCH v5 bpf-next 3/6] net: add priv_flags for allow tx skb without linear Alexander Lobakin
2021-02-16 14:34 ` Alexander Lobakin [this message]
2021-02-16 14:34 ` [PATCH v5 bpf-next 5/6] xsk: respect device's headroom and tailroom on generic xmit path Alexander Lobakin
2021-02-16 14:35 ` [PATCH v5 bpf-next 6/6] xsk: build skb by page (aka generic zerocopy xmit) Alexander Lobakin
2021-02-16 17:10 ` Alexander Lobakin
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