From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark McLoughlin Subject: [PATCH 0/5] kvm: qemu: virtio_net: add support for mergeable rx buffers Date: Wed, 26 Nov 2008 14:50:33 +0000 Message-ID: <1227711038-21942-1-git-send-email-markmc@redhat.com> References: <1223991840.11098.29.camel@blaa> Cc: kvm@vger.kernel.org, Rusty Russell , Herbert Xu , Anthony Liguori To: Avi Kivity Return-path: Received: from mail19.svc.cra.dublin.eircom.net ([159.134.118.218]:38235 "HELO mail19.svc.cra.dublin.eircom.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752188AbYKZOvy (ORCPT ); Wed, 26 Nov 2008 09:51:54 -0500 In-Reply-To: <1223991840.11098.29.camel@blaa> Sender: kvm-owner@vger.kernel.org List-ID: Hi, The mergeable receive buffers scheme has been in the Linux virtio_net driver in net-next-2.6 for a while now, so it's probably safe to assume what's there now is the final iteration of the ABI. The following patches implement support for the scheme in KVM. Only the 5/5 patch contains functional changes. Changes since last time: + We now peak at how much buffer space is actually available in the ring and no longer assume that buffers are at least 4k + The new header is now 'struct virtio_net_hdr_mrg_rxbuf' rather than 'struct virtio_net_hdr2' + The new header no longer is padded to 32 bytes Cheers, Mark.