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Date: Tue, 8 Aug 2023 11:19:05 +0800
From: Albert Huang <huangjie.albert@...edance.com>
To: davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com
Cc: Albert Huang <huangjie.albert@...edance.com>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Jesper Dangaard Brouer <hawk@...nel.org>,
John Fastabend <john.fastabend@...il.com>,
Björn Töpel <bjorn@...nel.org>,
Magnus Karlsson <magnus.karlsson@...el.com>,
Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
Jonathan Lemon <jonathan.lemon@...il.com>,
Pavel Begunkov <asml.silence@...il.com>,
Yunsheng Lin <linyunsheng@...wei.com>,
Kees Cook <keescook@...omium.org>,
Richard Gobert <richardbgobert@...il.com>,
"open list:NETWORKING DRIVERS" <netdev@...r.kernel.org>,
open list <linux-kernel@...r.kernel.org>,
"open list:XDP (eXpress Data Path)" <bpf@...r.kernel.org>
Subject: [RFC v3 Optimizing veth xsk performance 1/9] veth: Implement ethtool's get_ringparam() callback
some xsk library calls get_ringparam() API to get the queue length
to init the xsk umem.
Implement that in veth so those scenarios can work properly.
Signed-off-by: Albert Huang <huangjie.albert@...edance.com>
---
drivers/net/veth.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 614f3e3efab0..77e12d52ca2b 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -255,6 +255,17 @@ static void veth_get_channels(struct net_device *dev,
static int veth_set_channels(struct net_device *dev,
struct ethtool_channels *ch);
+static void veth_get_ringparam(struct net_device *dev,
+ struct ethtool_ringparam *ring,
+ struct kernel_ethtool_ringparam *kernel_ring,
+ struct netlink_ext_ack *extack)
+{
+ ring->rx_max_pending = VETH_RING_SIZE;
+ ring->tx_max_pending = VETH_RING_SIZE;
+ ring->rx_pending = VETH_RING_SIZE;
+ ring->tx_pending = VETH_RING_SIZE;
+}
+
static const struct ethtool_ops veth_ethtool_ops = {
.get_drvinfo = veth_get_drvinfo,
.get_link = ethtool_op_get_link,
@@ -265,6 +276,7 @@ static const struct ethtool_ops veth_ethtool_ops = {
.get_ts_info = ethtool_op_get_ts_info,
.get_channels = veth_get_channels,
.set_channels = veth_set_channels,
+ .get_ringparam = veth_get_ringparam,
};
/* general routines */
--
2.20.1
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