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-rw-r--r--src/plugins/dpdk/device/device.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/plugins/dpdk/device/device.c b/src/plugins/dpdk/device/device.c
index 806749ccb5d..e9c1a557a75 100644
--- a/src/plugins/dpdk/device/device.c
+++ b/src/plugins/dpdk/device/device.c
@@ -289,6 +289,7 @@ VNET_DEVICE_CLASS_TX_FN (dpdk_device_class) (vlib_main_t * vm,
n_left = n_packets;
mb = ptd->mbufs;
+#if (CLIB_N_PREFETCHES >= 8)
while (n_left >= 8)
{
u32 or_flags;
@@ -353,6 +354,62 @@ VNET_DEVICE_CLASS_TX_FN (dpdk_device_class) (vlib_main_t * vm,
mb += 4;
n_left -= 4;
}
+#elif (CLIB_N_PREFETCHES >= 4)
+ while (n_left >= 4)
+ {
+ vlib_buffer_t *b2, *b3;
+ u32 or_flags;
+
+ CLIB_PREFETCH (mb[2], CLIB_CACHE_LINE_BYTES, STORE);
+ CLIB_PREFETCH (mb[3], CLIB_CACHE_LINE_BYTES, STORE);
+ b2 = vlib_buffer_from_rte_mbuf (mb[2]);
+ CLIB_PREFETCH (b2, CLIB_CACHE_LINE_BYTES, LOAD);
+ b3 = vlib_buffer_from_rte_mbuf (mb[3]);
+ CLIB_PREFETCH (b3, CLIB_CACHE_LINE_BYTES, LOAD);
+
+ b[0] = vlib_buffer_from_rte_mbuf (mb[0]);
+ b[1] = vlib_buffer_from_rte_mbuf (mb[1]);
+
+ or_flags = b[0]->flags | b[1]->flags;
+ all_or_flags |= or_flags;
+
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[0]);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[1]);
+
+ if (or_flags & VLIB_BUFFER_NEXT_PRESENT)
+ {
+ dpdk_validate_rte_mbuf (vm, b[0], 1);
+ dpdk_validate_rte_mbuf (vm, b[1], 1);
+ }
+ else
+ {
+ dpdk_validate_rte_mbuf (vm, b[0], 0);
+ dpdk_validate_rte_mbuf (vm, b[1], 0);
+ }
+
+ if (PREDICT_FALSE ((xd->flags & DPDK_DEVICE_FLAG_TX_OFFLOAD) &&
+ (or_flags &
+ (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM
+ | VNET_BUFFER_F_OFFLOAD_IP_CKSUM
+ | VNET_BUFFER_F_OFFLOAD_UDP_CKSUM))))
+ {
+ dpdk_buffer_tx_offload (xd, b[0], mb[0]);
+ dpdk_buffer_tx_offload (xd, b[1], mb[1]);
+ }
+
+ if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
+ {
+ if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
+ dpdk_tx_trace_buffer (dm, node, xd, queue_id, b[0]);
+ if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
+ dpdk_tx_trace_buffer (dm, node, xd, queue_id, b[1]);
+ }
+
+ mb += 2;
+ n_left -= 2;
+ }
+#endif
+
while (n_left > 0)
{
b[0] = vlib_buffer_from_rte_mbuf (mb[0]);