vxlan: reuse inner packet flow hash for tunnel outer header load balance

[vpp.git] / src / vnet / geneve / encap.c

diff --git a/src/vnet/geneve/encap.c b/src/vnet/geneve/encap.c
index 8e59aea..af52fd2 100644 (file)
--- a/src/vnet/geneve/encap.c
+++ b/src/vnet/geneve/encap.c
@@ -120,6 +120,7 @@ geneve_encap_inline (vlib_main_t * vm,
          flow_hash0 = vnet_l2_compute_flow_hash (b[0]);
          flow_hash1 = vnet_l2_compute_flow_hash (b[1]);
 
+
          /* Get next node index and adj index from tunnel next_dpo */
          if (sw_if_index0 != vnet_buffer (b[0])->sw_if_index[VLIB_TX])
            {
@@ -289,6 +290,10 @@ geneve_encap_inline (vlib_main_t * vm,
          stats_n_packets += 2;
          stats_n_bytes += len0 + len1;
 
+         /* save inner packet flow_hash for load-balance node */
+         vnet_buffer (b[0])->ip.flow_hash = flow_hash0;
+         vnet_buffer (b[1])->ip.flow_hash = flow_hash1;
+
          /* Batch stats increment on the same geneve tunnel so counter is not
             incremented per packet. Note stats are still incremented for deleted
             and admin-down tunnel where packets are dropped. It is not worthwhile
@@ -467,6 +472,9 @@ geneve_encap_inline (vlib_main_t * vm,
          stats_n_packets += 1;
          stats_n_bytes += len0;
 
+         /* save inner packet flow_hash for load-balance node */
+         vnet_buffer (b[0])->ip.flow_hash = flow_hash0;
+
          /* Batch stats increment on the same geneve tunnel so counter is not
             incremented per packet. Note stats are still incremented for deleted
             and admin-down tunnel where packets are dropped. It is not worthwhile