X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=src%2Fvnet%2Fip%2Fip4.h;h=31ca10feece1f8cb38dfe0187d10464b5e301602;hp=fcef559010c3338a9d118b2bcf73e84e3470bb95;hb=2af0e3a;hpb=1855b8e48d95289cc9f0a6e339f2148d64ac705c

diff --git a/src/vnet/ip/ip4.h b/src/vnet/ip/ip4.h
index fcef559010c..31ca10feece 100644
--- a/src/vnet/ip/ip4.h
+++ b/src/vnet/ip/ip4.h
@@ -45,6 +45,7 @@
 #include <vnet/buffer.h>
 #include <vnet/feature/feature.h>
 #include <vnet/ip/icmp46_packet.h>
+#include <vnet/util/throttle.h>
 
 typedef struct ip4_mfib_t
 {
@@ -154,8 +155,14 @@ typedef struct ip4_main_t
 
   /** The memory heap for the mtries */
   void *mtrie_mheap;
+
+  /** ARP throttling */
+  throttle_t arp_throttle;
+
 } ip4_main_t;
 
+#define ARP_THROTTLE_BITS	(512)
+
 /** Global ip4 main structure. */
 extern ip4_main_t ip4_main;
 
@@ -301,7 +308,6 @@ ip4_compute_flow_hash (const ip4_header_t * ip,
 
   a = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t2 : t1;
   b = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t1 : t2;
-  b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? ip->protocol : 0;
 
   t1 = is_tcp_udp ? tcp->src : 0;
   t2 = is_tcp_udp ? tcp->dst : 0;
@@ -309,6 +315,23 @@ ip4_compute_flow_hash (const ip4_header_t * ip,
   t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0;
   t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 0;
 
+  if (flow_hash_config & IP_FLOW_HASH_SYMMETRIC)
+    {
+      if (b < a)
+	{
+	  c = a;
+	  a = b;
+	  b = c;
+	}
+      if (t2 < t1)
+	{
+	  t2 += t1;
+	  t1 = t2 - t1;
+	  t2 = t2 - t1;
+	}
+    }
+
+  b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? ip->protocol : 0;
   c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ?
     (t1 << 16) | t2 : (t2 << 16) | t1;