From: "Jiawen Wu" <jiawenwu@trustnetic.com>
To: "'Andrew Lunn'" <andrew@lunn.ch>
Cc: <netdev@vger.kernel.org>, <davem@davemloft.net>,
<edumazet@google.com>, <kuba@kernel.org>, <pabeni@redhat.com>,
<linux@armlinux.org.uk>, <horms@kernel.org>,
<mengyuanlou@net-swift.com>
Subject: RE: [PATCH net-next 2/5] net: wangxun: add ethtool_ops for ring parameters
Date: Thu, 30 Nov 2023 11:32:22 +0800 [thread overview]
Message-ID: <029601da233d$d4b8a9a0$7e29fce0$@trustnetic.com> (raw)
In-Reply-To: <4a36b46d-3f71-430f-8158-da58769ae52a@lunn.ch>
> > +int wx_set_ring(struct wx *wx, u32 new_tx_count, u32 new_rx_count)
> > +{
> > + struct wx_ring *temp_ring;
> > + int i, err = 0;
> > +
> > + /* allocate temporary buffer to store rings in */
> > + i = max_t(int, wx->num_tx_queues, wx->num_rx_queues);
> > + temp_ring = vmalloc(i * sizeof(struct wx_ring));
>
> So it is O.K. for the pages to be scattered around the physical
> address space, not contiguous. Does this memory ever get passed to the
> hardware?
No, this memory is only used to temporarily store ring info. It will be freed after
restoring the ring info.
next prev parent reply other threads:[~2023-11-30 3:34 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-22 10:22 [PATCH net-next 0/5] Implement more ethtool_ops for Wangxun Jiawen Wu
2023-11-22 10:22 ` [PATCH net-next 1/5] net: wangxun: add flow control support Jiawen Wu
2023-11-22 16:15 ` Andrew Lunn
2023-11-22 16:30 ` Russell King (Oracle)
2023-11-22 17:24 ` Andrew Lunn
2023-11-22 17:26 ` Russell King (Oracle)
2023-11-23 9:20 ` Jiawen Wu
2023-11-22 10:22 ` [PATCH net-next 2/5] net: wangxun: add ethtool_ops for ring parameters Jiawen Wu
2023-11-22 16:24 ` Andrew Lunn
2023-11-23 9:25 ` Jiawen Wu
2023-11-23 15:14 ` Andrew Lunn
2023-11-30 3:32 ` Jiawen Wu [this message]
2023-11-22 10:22 ` [PATCH net-next 3/5] net: wangxun: add coalesce options support Jiawen Wu
2023-11-22 10:22 ` [PATCH net-next 4/5] net: wangxun: add ethtool_ops for channel number Jiawen Wu
2023-11-22 16:35 ` Andrew Lunn
2023-11-22 10:22 ` [PATCH net-next 5/5] net: wangxun: add ethtool_ops for msglevel Jiawen Wu
2023-11-22 16:36 ` Andrew Lunn
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