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From: Shirley Ma <mashirle@us.ibm.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
	Avi Kivity <avi@redhat.com>,
	netdev@vger.kernel.org, kvm@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Anthony Liguori <anthony@codemonkey.ws>
Subject: Re: PATCH v2 3/4] Defer skb allocation -- new recvbuf alloc & receive calls
Date: Mon, 14 Dec 2009 16:37:15 -0800	[thread overview]
Message-ID: <1260837435.4387.11.camel@localhost.localdomain> (raw)
In-Reply-To: <1260828518.8716.105.camel@localhost.localdomain>

Hello Michael,

On Mon, 2009-12-14 at 14:08 -0800, Shirley Ma wrote:
> > > +
> > > +     err = vi->rvq->vq_ops->add_buf(vi->rvq, sg, 0, 2, skb);
> > > +     if (err < 0)
> > > +             kfree_skb(skb);
> > > +     else
> > > +             skb_queue_head(&vi->recv, skb);
> > 
> > So why are we queueing this still?
> This is for small packet. I didn't change that code since it will
> involve extra copy by using page.

I think I can remove skb link for small packet as well by adding
kfree_skb() in virtio_net_free_bufs for small packet.

Thanks
Shirley


  reply	other threads:[~2009-12-15  0:37 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-20  6:09 [PATCH 0/1] Defer skb allocation for both mergeable buffers and big packets in virtio_net Shirley Ma
2009-11-23  0:53 ` Rusty Russell
2009-11-23  8:51   ` Mark McLoughlin
2009-12-08 12:21   ` Michael S. Tsirkin
2009-12-11 12:28     ` [PATCH v2 0/4] " Shirley Ma
2009-12-11 12:33       ` [PATCH v2 1/4] Defer skb allocation -- add destroy buffers function for virtio Shirley Ma
2009-12-13 10:26         ` Michael S. Tsirkin
2009-12-14 20:08           ` Shirley Ma
2009-12-14 20:22             ` Michael S. Tsirkin
2009-12-14 23:22               ` Shirley Ma
2009-12-15 10:57                 ` Michael S. Tsirkin
2009-12-15 22:36               ` Rusty Russell
2009-12-15 22:40                 ` Michael S. Tsirkin
2009-12-16  5:04                   ` Rusty Russell
2009-12-14  3:25         ` Rusty Russell
2009-12-14 22:09           ` Shirley Ma
2009-12-11 12:43       ` [PATCH v2 2/4] Defer skb allocation -- new skb_set calls & chain pages in virtio_net Shirley Ma
2009-12-13 11:24         ` Michael S. Tsirkin
2009-12-14 21:23           ` Shirley Ma
2009-12-15 11:21             ` Michael S. Tsirkin
2009-12-14  6:54         ` Rusty Russell
2009-12-14 22:10           ` Shirley Ma
2009-12-11 12:46       ` PATCH v2 3/4] Defer skb allocation -- new recvbuf alloc & receive calls Shirley Ma
2009-12-13 11:43         ` Michael S. Tsirkin
2009-12-14 22:08           ` Shirley Ma
2009-12-15  0:37             ` Shirley Ma [this message]
2009-12-15 11:33             ` Michael S. Tsirkin
2009-12-15 16:25               ` Shirley Ma
2009-12-15 16:39                 ` Michael S. Tsirkin
2009-12-15 18:42                   ` [RFC PATCH] Subject: virtio: Add unused buffers detach from vring Shirley Ma
2009-12-15 18:47                     ` Michael S. Tsirkin
2009-12-15 19:08                       ` Shirley Ma
2009-12-15 19:14                       ` Shirley Ma
2009-12-15 21:14                         ` Michael S. Tsirkin
2009-12-11 12:49       ` [PATCH v2 4/4] Defer skb allocation -- change allocation & receiving in recv path Shirley Ma
2009-12-13 11:08         ` Michael S. Tsirkin
2009-12-15  8:43           ` Shirley Ma
2009-12-13 10:19       ` [PATCH v2 0/4] Defer skb allocation for both mergeable buffers and big packets in virtio_net Michael S. Tsirkin
2009-12-14 19:59         ` Shirley Ma

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