[dpdk-dev] [PATCH 5/8] lib/librte_vhost:dequeue vhost TSO offload
Jijiang Liu
jijiang.liu at intel.com
Wed Sep 16 19:10:35 CEST 2015
Dequeue host TSO4/6 offload in host side.
Signed-off-by: Jijiang Liu <jijiang.liu at intel.com>
---
lib/librte_vhost/vhost_rxtx.c | 29 ++++++++++++++++++++++++++++-
1 files changed, 28 insertions(+), 1 deletions(-)
diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
index 0d07338..b84ec64 100644
--- a/lib/librte_vhost/vhost_rxtx.c
+++ b/lib/librte_vhost/vhost_rxtx.c
@@ -545,6 +545,30 @@ rte_vhost_enqueue_burst(struct virtio_net *dev, uint16_t queue_id,
return virtio_dev_rx(dev, queue_id, pkts, count);
}
+static inline void __attribute__((always_inline))
+vhost_dequeue_offload(uint64_t addr, struct rte_mbuf *m)
+{
+ struct virtio_net_hdr *hdr =
+ (struct virtio_net_hdr *)((uintptr_t)addr);
+
+ if (hdr->gso_type != VIRTIO_NET_HDR_GSO_NONE) {
+ switch (hdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN) {
+ case VIRTIO_NET_HDR_GSO_TCPV4:
+ m->ol_flags |= (PKT_TX_IPV4 | PKT_TX_TCP_SEG);
+ m->tso_segsz = hdr->gso_size;
+ break;
+ case VIRTIO_NET_HDR_GSO_TCPV6:
+ m->ol_flags |= (PKT_TX_IPV6 | PKT_TX_TCP_SEG);
+ m->tso_segsz = hdr->gso_size;
+ break;
+ default:
+ RTE_LOG(WARNING, VHOST_DATA,
+ "unsupported gso type %u.\n", hdr->gso_type);
+ break;
+ }
+ }
+}
+
uint16_t
rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count)
@@ -553,6 +577,7 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
struct vhost_virtqueue *vq;
struct vring_desc *desc;
uint64_t vb_addr = 0;
+ uint64_t vb_net_hdr_addr = 0;
uint32_t head[MAX_PKT_BURST];
uint32_t used_idx;
uint32_t i;
@@ -604,6 +629,8 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
desc = &vq->desc[head[entry_success]];
+ vb_net_hdr_addr = gpa_to_vva(dev, desc->addr);
+
/* Discard first buffer as it is the virtio header */
if (desc->flags & VRING_DESC_F_NEXT) {
desc = &vq->desc[desc->next];
@@ -742,7 +769,7 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
break;
m->nb_segs = seg_num;
-
+ vhost_dequeue_offload(vb_net_hdr_addr, m);
pkts[entry_success] = m;
vq->last_used_idx++;
entry_success++;
--
1.7.7.6
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