diff options
| author |   Florin Coras <fcoras@cisco.com> | 2018-06-01 12:22:23 -0700 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2018-06-04 11:09:25 +0000 |
| commit | 3a0325f9cab7838c21b19698b89cfc65e3236085 (patch) | |
| tree | b5addaa466251d1cd771c9772b1810f69e048dd9 /src/vnet/ip/ip4_forward.h | |
| parent | 61f7912466098773f789bd3ce57431e5dcff8978 (diff) | |
ip: save fib index for buffer in ip lookup
Avoids recomputing the fib index in ip local for locally delivered
packets and should incur no extra cost when forwarding packets.
Change-Id: Id826ffa8206392087327f154337eabc8a801b4d7
Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/ip/ip4_forward.h')
| -rw-r--r-- | src/vnet/ip/ip4_forward.h | 57 |
1 files changed, 12 insertions, 45 deletions
diff --git a/src/vnet/ip/ip4_forward.h b/src/vnet/ip/ip4_forward.h index 71f58f14e6d..553a0536c6c 100644 --- a/src/vnet/ip/ip4_forward.h +++ b/src/vnet/ip/ip4_forward.h @@ -79,10 +79,7 @@ ip4_lookup_inline (vlib_main_t * vm, 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 pi0, fib_index0, lb_index0; - u32 pi1, fib_index1, lb_index1; - u32 pi2, fib_index2, lb_index2; - u32 pi3, fib_index3, lb_index3; + u32 pi0, pi1, pi2, pi3, lb_index0, lb_index1, lb_index2, lb_index3; flow_hash_config_t flow_hash_config0, flow_hash_config1; flow_hash_config_t flow_hash_config2, flow_hash_config3; u32 hash_c0, hash_c1, hash_c2, hash_c3; @@ -133,38 +130,17 @@ ip4_lookup_inline (vlib_main_t * vm, dst_addr2 = &ip2->dst_address; dst_addr3 = &ip3->dst_address; - fib_index0 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p0)->sw_if_index[VLIB_RX]); - fib_index1 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p1)->sw_if_index[VLIB_RX]); - fib_index2 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p2)->sw_if_index[VLIB_RX]); - fib_index3 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p3)->sw_if_index[VLIB_RX]); - fib_index0 = - (vnet_buffer (p0)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX]; - fib_index1 = - (vnet_buffer (p1)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index1 : vnet_buffer (p1)->sw_if_index[VLIB_TX]; - fib_index2 = - (vnet_buffer (p2)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index2 : vnet_buffer (p2)->sw_if_index[VLIB_TX]; - fib_index3 = - (vnet_buffer (p3)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index3 : vnet_buffer (p3)->sw_if_index[VLIB_TX]; - + ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p0); + ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p1); + ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p2); + ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p3); if (!lookup_for_responses_to_locally_received_packets) { - mtrie0 = &ip4_fib_get (fib_index0)->mtrie; - mtrie1 = &ip4_fib_get (fib_index1)->mtrie; - mtrie2 = &ip4_fib_get (fib_index2)->mtrie; - mtrie3 = &ip4_fib_get (fib_index3)->mtrie; + mtrie0 = &ip4_fib_get (vnet_buffer (p0)->ip.fib_index)->mtrie; + mtrie1 = &ip4_fib_get (vnet_buffer (p1)->ip.fib_index)->mtrie; + mtrie2 = &ip4_fib_get (vnet_buffer (p2)->ip.fib_index)->mtrie; + mtrie3 = &ip4_fib_get (vnet_buffer (p3)->ip.fib_index)->mtrie; leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0); leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, dst_addr1); @@ -317,7 +293,7 @@ ip4_lookup_inline (vlib_main_t * vm, ip4_fib_mtrie_t *mtrie0; ip4_fib_mtrie_leaf_t leaf0; ip4_address_t *dst_addr0; - u32 pi0, fib_index0, lbi0; + u32 pi0, lbi0; flow_hash_config_t flow_hash_config0; const dpo_id_t *dpo0; u32 hash_c0; @@ -326,22 +302,13 @@ ip4_lookup_inline (vlib_main_t * vm, to_next[0] = pi0; p0 = vlib_get_buffer (vm, pi0); - ip0 = vlib_buffer_get_current (p0); - dst_addr0 = &ip0->dst_address; - - fib_index0 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p0)->sw_if_index[VLIB_RX]); - fib_index0 = - (vnet_buffer (p0)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX]; + ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p0); if (!lookup_for_responses_to_locally_received_packets) { - mtrie0 = &ip4_fib_get (fib_index0)->mtrie; - + mtrie0 = &ip4_fib_get (vnet_buffer (p0)->ip.fib_index)->mtrie; leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0); } |