ip: Use the IP4 lookup functions

Type: refactor

as opposed to wrtiing out the mtrie steps one by one each time.

Signed-off-by: Neale Ranns <neale@graphiant.com>
Change-Id: I1248861350f9189f9a67ac6e68940813af279e03

2 files changed, 15 insertions, 76 deletions

diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index be381718312..ea67005176f 100644
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -1517,8 +1517,6 @@ static inline void
 ip4_local_check_src (vlib_buffer_t * b, ip4_header_t * ip0,
 		     ip4_local_last_check_t * last_check, u8 * error0)
 {
-  ip4_fib_mtrie_leaf_t leaf0;
-  ip4_fib_mtrie_t *mtrie0;
   const dpo_id_t *dpo0;
   load_balance_t *lb0;
   u32 lbi0;
@@ -1536,11 +1534,8 @@ ip4_local_check_src (vlib_buffer_t * b, ip4_header_t * ip0,
   if (PREDICT_TRUE (last_check->src.as_u32 != ip0->src_address.as_u32) ||
       last_check->first)
     {
-      mtrie0 = &ip4_fib_get (vnet_buffer (b)->ip.fib_index)->mtrie;
-      leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address);
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 2);
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 3);
-      lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
+      lbi0 = ip4_fib_forwarding_lookup (vnet_buffer (b)->ip.fib_index,
+					&ip0->src_address);
 
       vnet_buffer (b)->ip.adj_index[VLIB_RX] =
 	vnet_buffer (b)->ip.adj_index[VLIB_TX];
@@ -1586,8 +1581,6 @@ static inline void
 ip4_local_check_src_x2 (vlib_buffer_t ** b, ip4_header_t ** ip,
 			ip4_local_last_check_t * last_check, u8 * error)
 {
-  ip4_fib_mtrie_leaf_t leaf[2];
-  ip4_fib_mtrie_t *mtrie[2];
   const dpo_id_t *dpo[2];
   load_balance_t *lb[2];
   u32 not_last_hit;
@@ -1615,24 +1608,9 @@ ip4_local_check_src_x2 (vlib_buffer_t ** b, ip4_header_t ** ip,
    */
   if (PREDICT_TRUE (not_last_hit))
     {
-      mtrie[0] = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie;
-      mtrie[1] = &ip4_fib_get (vnet_buffer (b[1])->ip.fib_index)->mtrie;
-
-      leaf[0] = ip4_fib_mtrie_lookup_step_one (mtrie[0], &ip[0]->src_address);
-      leaf[1] = ip4_fib_mtrie_lookup_step_one (mtrie[1], &ip[1]->src_address);
-
-      leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0],
-					   &ip[0]->src_address, 2);
-      leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1],
-					   &ip[1]->src_address, 2);
-
-      leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0],
-					   &ip[0]->src_address, 3);
-      leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1],
-					   &ip[1]->src_address, 3);
-
-      lbi[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf[0]);
-      lbi[1] = ip4_fib_mtrie_leaf_get_adj_index (leaf[1]);
+      ip4_fib_forwarding_lookup_x2 (
+	vnet_buffer (b[0])->ip.fib_index, vnet_buffer (b[1])->ip.fib_index,
+	&ip[0]->src_address, &ip[1]->src_address, &lbi[0], &lbi[1]);
 
       vnet_buffer (b[0])->ip.adj_index[VLIB_RX] =
 	vnet_buffer (b[0])->ip.adj_index[VLIB_TX];
diff --git a/src/vnet/ip/ip4_forward.h b/src/vnet/ip/ip4_forward.h
index 8779d2ded6b..54150d4dab4 100644
--- a/src/vnet/ip/ip4_forward.h
+++ b/src/vnet/ip/ip4_forward.h
@@ -74,8 +74,6 @@ ip4_lookup_inline (vlib_main_t * vm,
     {
       ip4_header_t *ip0, *ip1, *ip2, *ip3;
       const load_balance_t *lb0, *lb1, *lb2, *lb3;
-      ip4_fib_mtrie_t *mtrie0, *mtrie1, *mtrie2, *mtrie3;
-      ip4_fib_mtrie_leaf_t leaf0, leaf1, leaf2, leaf3;
       ip4_address_t *dst_addr0, *dst_addr1, *dst_addr2, *dst_addr3;
       u32 lb_index0, lb_index1, lb_index2, lb_index3;
       flow_hash_config_t flow_hash_config0, flow_hash_config1;
@@ -112,30 +110,11 @@ ip4_lookup_inline (vlib_main_t * vm,
       ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[2]);
       ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[3]);
 
-      mtrie0 = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie;
-      mtrie1 = &ip4_fib_get (vnet_buffer (b[1])->ip.fib_index)->mtrie;
-      mtrie2 = &ip4_fib_get (vnet_buffer (b[2])->ip.fib_index)->mtrie;
-      mtrie3 = &ip4_fib_get (vnet_buffer (b[3])->ip.fib_index)->mtrie;
-
-      leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0);
-      leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, dst_addr1);
-      leaf2 = ip4_fib_mtrie_lookup_step_one (mtrie2, dst_addr2);
-      leaf3 = ip4_fib_mtrie_lookup_step_one (mtrie3, dst_addr3);
-
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2);
-      leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 2);
-      leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, dst_addr2, 2);
-      leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, dst_addr3, 2);
-
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
-      leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 3);
-      leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, dst_addr2, 3);
-      leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, dst_addr3, 3);
-
-      lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
-      lb_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
-      lb_index2 = ip4_fib_mtrie_leaf_get_adj_index (leaf2);
-      lb_index3 = ip4_fib_mtrie_leaf_get_adj_index (leaf3);
+      ip4_fib_forwarding_lookup_x4 (
+	vnet_buffer (b[0])->ip.fib_index, vnet_buffer (b[1])->ip.fib_index,
+	vnet_buffer (b[2])->ip.fib_index, vnet_buffer (b[3])->ip.fib_index,
+	dst_addr0, dst_addr1, dst_addr2, dst_addr3, &lb_index0, &lb_index1,
+	&lb_index2, &lb_index3);
 
       ASSERT (lb_index0 && lb_index1 && lb_index2 && lb_index3);
       lb0 = load_balance_get (lb_index0);
@@ -245,8 +224,6 @@ ip4_lookup_inline (vlib_main_t * vm,
     {
       ip4_header_t *ip0, *ip1;
       const load_balance_t *lb0, *lb1;
-      ip4_fib_mtrie_t *mtrie0, *mtrie1;
-      ip4_fib_mtrie_leaf_t leaf0, leaf1;
       ip4_address_t *dst_addr0, *dst_addr1;
       u32 lb_index0, lb_index1;
       flow_hash_config_t flow_hash_config0, flow_hash_config1;
@@ -271,20 +248,9 @@ ip4_lookup_inline (vlib_main_t * vm,
       ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[0]);
       ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[1]);
 
-      mtrie0 = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie;
-      mtrie1 = &ip4_fib_get (vnet_buffer (b[1])->ip.fib_index)->mtrie;
-
-      leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0);
-      leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, dst_addr1);
-
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2);
-      leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 2);
-
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
-      leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 3);
-
-      lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
-      lb_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
+      ip4_fib_forwarding_lookup_x2 (
+	vnet_buffer (b[0])->ip.fib_index, vnet_buffer (b[1])->ip.fib_index,
+	dst_addr0, dst_addr1, &lb_index0, &lb_index1);
 
       ASSERT (lb_index0 && lb_index1);
       lb0 = load_balance_get (lb_index0);
@@ -348,8 +314,6 @@ ip4_lookup_inline (vlib_main_t * vm,
     {
       ip4_header_t *ip0;
       const load_balance_t *lb0;
-      ip4_fib_mtrie_t *mtrie0;
-      ip4_fib_mtrie_leaf_t leaf0;
       ip4_address_t *dst_addr0;
       u32 lbi0;
       flow_hash_config_t flow_hash_config0;
@@ -360,11 +324,8 @@ ip4_lookup_inline (vlib_main_t * vm,
       dst_addr0 = &ip0->dst_address;
       ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[0]);
 
-      mtrie0 = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie;
-      leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0);
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2);
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
-      lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
+      lbi0 = ip4_fib_forwarding_lookup (vnet_buffer (b[0])->ip.fib_index,
+					dst_addr0);
 
       ASSERT (lbi0);
       lb0 = load_balance_get (lbi0);