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authorNeale Ranns <nranns@cisco.com>2017-03-28 03:49:52 -0700
committerDamjan Marion <dmarion.lists@gmail.com>2017-04-01 16:48:31 +0000
commita3af337e06a79f7d1dacf42a319f241c907122fc (patch)
tree7f236558a16cf37298d57556ed8fa905a19b934b /src/vnet/dpo
parent8db1de83ec540e01bb0577b726770bbb2338edcb (diff)
MTRIE Optimisations 2
1) 16-8-8 stride. Reduce trie depth walk traded with increased memory in the top PLY. 2) separate the vector of protocol-independent (PI) fib_table_t with the vector of protocol dependent (PD) FIBs. PD FIBs are large structures, we don't want to burn the memory for ech PD type 3) Go straight to the PD FIB in the data-path thus avoiding an indirection through, e.g., a PLY pool. Change-Id: I800d1ed0b2049040d5da95213f3ed6b12bdd78b7 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/dpo')
-rw-r--r--src/vnet/dpo/load_balance.c6
-rw-r--r--src/vnet/dpo/lookup_dpo.c4
2 files changed, 5 insertions, 5 deletions
diff --git a/src/vnet/dpo/load_balance.c b/src/vnet/dpo/load_balance.c
index d5e98e4e32e..6b0eda0e8b1 100644
--- a/src/vnet/dpo/load_balance.c
+++ b/src/vnet/dpo/load_balance.c
@@ -827,14 +827,18 @@ const static char* const * const load_balance_nodes[DPO_PROTO_NUM] =
void
load_balance_module_init (void)
{
+ index_t lbi;
+
dpo_register(DPO_LOAD_BALANCE, &lb_vft, load_balance_nodes);
/*
* Special LB with index zero. we need to define this since the v4 mtrie
* assumes an index of 0 implies the ply is empty. therefore all 'real'
* adjs need a non-zero index.
+ * This should never be used, but just in case, stack it on a drop.
*/
- load_balance_create(0, DPO_PROTO_IP4, 0);
+ lbi = load_balance_create(1, DPO_PROTO_IP4, 0);
+ load_balance_set_bucket(lbi, 0, drop_dpo_get(DPO_PROTO_IP4));
load_balance_map_module_init();
}
diff --git a/src/vnet/dpo/lookup_dpo.c b/src/vnet/dpo/lookup_dpo.c
index 3726c8fe0d4..e94e871cd92 100644
--- a/src/vnet/dpo/lookup_dpo.c
+++ b/src/vnet/dpo/lookup_dpo.c
@@ -211,7 +211,6 @@ ip4_src_fib_lookup_one (u32 src_fib_index0,
mtrie0 = &ip4_fib_get (src_fib_index0)->mtrie;
leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, addr0);
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 1);
leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 2);
leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 3);
@@ -235,9 +234,6 @@ ip4_src_fib_lookup_two (u32 src_fib_index0,
leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, addr0);
leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, addr1);
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 1);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 1);
-
leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 2);
leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 2);