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authorNeale Ranns <nranns@cisco.com>2017-03-23 06:46:01 -0700
committerDamjan Marion <dmarion.lists@gmail.com>2017-03-29 13:00:52 +0000
commit04a75e3230ab71248fc29a56b9f64bdaee0c17ac (patch)
tree85977ecfdf1c4002451cbbcf075694ae1ba1173c /src/vnet/ip/ip4_source_check.c
parent9a69a6095f67b8979a02f128f44e449889454273 (diff)
Mtrie optimisations
1 - make the default route non-special, i.e. like any other less specific route. Consequently, all buckets have a valid valid index of either a leaf or a ply. Checks for special indeices in the data-path can thus be removed. 2 - since all leaves are now 'real' i.e. they represent a real load-balance object, to tell if a ply slot is 'empty' requeirs chekcing that the prefix length of the leaf occupying the slot is slot than the minium value for that ply. 3 - when removing a leaf find the cover first, then recurse down the ply and replace the old leaf with the cover. This saves us a ply walk. Change-Id: Idd523019e8bb1b6ef527b1f5279a5e24bcf18332 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/ip/ip4_source_check.c')
-rw-r--r--src/vnet/ip/ip4_source_check.c13
1 files changed, 3 insertions, 10 deletions
diff --git a/src/vnet/ip/ip4_source_check.c b/src/vnet/ip/ip4_source_check.c
index 3af32f2e13b..7c2b7be8cf1 100644
--- a/src/vnet/ip/ip4_source_check.c
+++ b/src/vnet/ip/ip4_source_check.c
@@ -162,12 +162,8 @@ ip4_source_check_inline (vlib_main_t * vm,
mtrie0 = &ip4_fib_get (c0->fib_index)->mtrie;
mtrie1 = &ip4_fib_get (c1->fib_index)->mtrie;
- leaf0 = leaf1 = IP4_FIB_MTRIE_LEAF_ROOT;
-
- leaf0 =
- ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 0);
- leaf1 =
- ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->src_address, 0);
+ leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address);
+ leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, &ip1->src_address);
leaf0 =
ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 1);
@@ -250,10 +246,7 @@ ip4_source_check_inline (vlib_main_t * vm,
mtrie0 = &ip4_fib_get (c0->fib_index)->mtrie;
- leaf0 = IP4_FIB_MTRIE_LEAF_ROOT;
-
- leaf0 =
- ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 0);
+ leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address);
leaf0 =
ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 1);