From: Oliver Neukum <oneukum@suse.de>
To: Ming Lei <ming.lei@canonical.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Freddy Xin <freddy@asix.com.tw>,
Eric Dumazet <eric.dumazet@gmail.com>,
Ben Hutchings <bhutchings@solarflare.com>,
Grant Grundler <grundler@google.com>,
netdev@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: [PATCH 0/4] USB & USBNET: loose DMA SG check and support usbnet DMA SG
Date: Wed, 31 Jul 2013 13:12:08 +0200 [thread overview]
Message-ID: <1375269128.17175.8.camel@linux-fkkt.site> (raw)
In-Reply-To: <1375267909-30373-1-git-send-email-ming.lei@canonical.com>
On Wed, 2013-07-31 at 18:51 +0800, Ming Lei wrote:
> Hi,
>
> This patchset allows drivers to pass sg buffers which size can't be divided
> by max packet size of endpoint if the host controllers support this kind
> of sg buffers.
Cool. One question though. It makes sense to use sg only
if all elements are in memory capable of DMA. It seems to be possible
to have HCs which can do unlimited sg but are limited to 32bit DMA.
Regards
Oliver
next prev parent reply other threads:[~2013-07-31 11:12 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-31 10:51 [PATCH 0/4] USB & USBNET: loose DMA SG check and support usbnet DMA SG Ming Lei
2013-07-31 10:51 ` [PATCH 1/4] USB: introduce no_sg_limit field into usb_bus Ming Lei
2013-07-31 10:51 ` [PATCH 3/4] USBNET: support DMA SG Ming Lei
2013-07-31 10:51 ` [PATCH 4/4] USBNET: ax88179_178a: enable tso if host supports sg dma Ming Lei
2013-07-31 12:47 ` Greg Kroah-Hartman
2013-07-31 13:50 ` Ming Lei
2013-07-31 14:02 ` Oliver Neukum
[not found] ` <1375279366.14846.1.camel-B2T3B9s34ElbnMAlSieJcQ@public.gmane.org>
2013-07-31 15:15 ` Eric Dumazet
2013-07-31 15:25 ` Ming Lei
2013-08-01 2:04 ` Ming Lei
[not found] ` <1375267909-30373-5-git-send-email-ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2013-08-01 3:51 ` Eric Dumazet
2013-08-01 4:41 ` Ming Lei
2013-08-01 5:04 ` Eric Dumazet
2013-08-01 8:10 ` Ming Lei
[not found] ` <CACVXFVMt-TgRVU+iA3NVuUzJSeXUPGvV89OnDdHaLEB1Ua6aAw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-01 13:21 ` Eric Dumazet
2013-08-01 13:49 ` [PATCH net-next] ax88179_178a: avoid copy of tx tcp packets Eric Dumazet
2013-08-01 13:52 ` Eric Dumazet
2013-08-04 4:56 ` David Miller
2013-08-01 15:30 ` [PATCH 4/4] USBNET: ax88179_178a: enable tso if host supports sg dma Grant Grundler
2013-08-01 15:36 ` Eric Dumazet
2013-08-01 16:12 ` Grant Grundler
2013-07-31 11:12 ` Oliver Neukum [this message]
2013-07-31 11:55 ` [PATCH 0/4] USB & USBNET: loose DMA SG check and support usbnet DMA SG Ming Lei
[not found] ` <1375267909-30373-1-git-send-email-ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2013-07-31 10:51 ` [PATCH 2/4] USB: XHCI: mark no_sg_limit Ming Lei
2013-07-31 16:40 ` Sarah Sharp
2013-08-01 7:30 ` Greg Kroah-Hartman
2013-08-01 8:15 ` Oliver Neukum
2013-08-01 20:47 ` Sarah Sharp
2013-07-31 15:25 ` [PATCH 0/4] USB & USBNET: loose DMA SG check and support usbnet DMA SG Eric Dumazet
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