From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35721) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b6hFH-0007BM-BH for qemu-devel@nongnu.org; Sat, 28 May 2016 12:37:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b6hFE-0006SP-41 for qemu-devel@nongnu.org; Sat, 28 May 2016 12:37:51 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48864) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b6hFD-0006SJ-V1 for qemu-devel@nongnu.org; Sat, 28 May 2016 12:37:48 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8D70CC057EC7 for ; Sat, 28 May 2016 16:37:47 +0000 (UTC) From: wexu@redhat.com Date: Sun, 29 May 2016 00:37:34 +0800 Message-Id: <1464453454-5703-4-git-send-email-wexu@redhat.com> In-Reply-To: <1464453454-5703-1-git-send-email-wexu@redhat.com> References: <1464453454-5703-1-git-send-email-wexu@redhat.com> Subject: [Qemu-devel] [ RFC Patch v6 3/3] virtio-net rsc: add 2 new rsc information fields to 'virtio_net_hdr' List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: jasowang@redhat.com, marcel@redhat.com, mst@redhat.com, victork@redhat.com, dfleytma@redhat.com, yvugenfi@redhat.com, Wei Xu From: Wei Xu Field 'coalesced' is to indicate how many packets are coalesced and field 'dup_ack' is how many duplicate acks are merged, guest driver can use these information to notify what's the exact scene of original traffic over the networks. Signed-off-by: Wei Xu --- hw/net/virtio-net.c | 8 ++++++++ include/standard-headers/linux/virtio_net.h | 2 ++ 2 files changed, 10 insertions(+) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index cc8cbe4..20f552a 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -1768,6 +1768,10 @@ static size_t virtio_net_rsc_drain_seg(NetRscChain *chain, NetRscSeg *seg) if ((chain->proto == ETH_P_IP) && seg->is_coalesced) { virtio_net_rsc_ipv4_checksum(h, seg->unit.ip); } + h->coalesced = seg->packets; + h->dup_ack = seg->dup_ack; + h->gso_type = chain->gso_type; + h->gso_size = chain->max_payload; ret = virtio_net_do_receive(seg->nc, seg->buf, seg->size); QTAILQ_REMOVE(&chain->buffers, seg, next); g_free(seg->buf); @@ -2302,9 +2306,13 @@ static ssize_t virtio_net_receive(NetClientState *nc, const uint8_t *buf, size_t size) { VirtIONet *n; + struct virtio_net_hdr *h; n = qemu_get_nic_opaque(nc); if (n->host_features & (1ULL << VIRTIO_NET_F_GUEST_RSC)) { + h = (struct virtio_net_hdr *)buf; + h->coalesced = 0; + h->dup_ack = 0; return virtio_net_rsc_receive(nc, buf, size); } else { return virtio_net_do_receive(nc, buf, size); diff --git a/include/standard-headers/linux/virtio_net.h b/include/standard-headers/linux/virtio_net.h index 5b95762..c837417 100644 --- a/include/standard-headers/linux/virtio_net.h +++ b/include/standard-headers/linux/virtio_net.h @@ -114,6 +114,8 @@ struct virtio_net_hdr { __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ __virtio16 csum_start; /* Position to start checksumming from */ __virtio16 csum_offset; /* Offset after that to place checksum */ + __virtio16 coalesced; /* packets coalesced by host */ + __virtio16 dup_ack; /* duplicate ack count */ }; /* This is the version of the header to use when the MRG_RXBUF -- 2.7.1