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authorFlorin Coras <fcoras@cisco.com>2018-06-01 12:22:23 -0700
committerDave Barach <openvpp@barachs.net>2018-06-04 11:09:25 +0000
commit3a0325f9cab7838c21b19698b89cfc65e3236085 (patch)
treeb5addaa466251d1cd771c9772b1810f69e048dd9
parent61f7912466098773f789bd3ce57431e5dcff8978 (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>
-rw-r--r--src/vnet/ip/ip4_forward.c41
-rw-r--r--src/vnet/ip/ip4_forward.h57
-rw-r--r--src/vnet/ip/ip6_forward.c30
-rw-r--r--src/vnet/ip/ip6_forward.h39
-rw-r--r--src/vnet/ip/lookup.h12
5 files changed, 65 insertions, 114 deletions
diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index 40fe9dc447e..04cfac0d6be 100644
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -1202,8 +1202,8 @@ ip4_local_inline (vlib_main_t * vm,
ip4_fib_mtrie_leaf_t leaf0, leaf1;
const dpo_id_t *dpo0, *dpo1;
const load_balance_t *lb0, *lb1;
- u32 pi0, next0, fib_index0, lbi0;
- u32 pi1, next1, fib_index1, lbi1;
+ u32 pi0, next0, lbi0;
+ u32 pi1, next1, lbi1;
u8 error0, is_udp0, is_tcp_udp0, good_tcp_udp0, proto0;
u8 error1, is_udp1, is_tcp_udp1, good_tcp_udp1, proto1;
u32 sw_if_index0, sw_if_index1;
@@ -1268,22 +1268,19 @@ ip4_local_inline (vlib_main_t * vm,
error1 = (is_tcp_udp1 && !good_tcp_udp1
? IP4_ERROR_TCP_CHECKSUM + is_udp1 : error1);
- fib_index0 = vec_elt (im->fib_index_by_sw_if_index, sw_if_index0);
- fib_index0 =
- (vnet_buffer (p0)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX];
+ vnet_buffer (p0)->ip.fib_index =
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] != ~0 ?
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] :
+ vnet_buffer (p0)->ip.fib_index;
- fib_index1 = vec_elt (im->fib_index_by_sw_if_index, sw_if_index1);
- fib_index1 =
- (vnet_buffer (p1)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? fib_index1 : vnet_buffer (p1)->sw_if_index[VLIB_TX];
+ vnet_buffer (p1)->ip.fib_index =
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] != ~0 ?
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] :
+ vnet_buffer (p1)->ip.fib_index;
- /* TODO maybe move to lookup? */
- vnet_buffer (p0)->ip.fib_index = fib_index0;
- vnet_buffer (p1)->ip.fib_index = fib_index1;
- mtrie0 = &ip4_fib_get (fib_index0)->mtrie;
- mtrie1 = &ip4_fib_get (fib_index1)->mtrie;
+ mtrie0 = &ip4_fib_get (vnet_buffer (p0)->ip.fib_index)->mtrie;
+ mtrie1 = &ip4_fib_get (vnet_buffer (p1)->ip.fib_index)->mtrie;
leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address);
leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, &ip1->src_address);
@@ -1374,7 +1371,7 @@ ip4_local_inline (vlib_main_t * vm,
ip4_header_t *ip0;
ip4_fib_mtrie_t *mtrie0;
ip4_fib_mtrie_leaf_t leaf0;
- u32 pi0, next0, fib_index0, lbi0;
+ u32 pi0, next0, lbi0;
u8 error0, is_udp0, is_tcp_udp0, good_tcp_udp0, proto0;
load_balance_t *lb0;
const dpo_id_t *dpo0;
@@ -1417,12 +1414,12 @@ ip4_local_inline (vlib_main_t * vm,
error0 = (is_tcp_udp0 && !good_tcp_udp0
? IP4_ERROR_TCP_CHECKSUM + is_udp0 : error0);
- fib_index0 = vec_elt (im->fib_index_by_sw_if_index, sw_if_index0);
- fib_index0 =
- (vnet_buffer (p0)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX];
- vnet_buffer (p0)->ip.fib_index = fib_index0;
- mtrie0 = &ip4_fib_get (fib_index0)->mtrie;
+ vnet_buffer (p0)->ip.fib_index =
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] != ~0 ?
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] :
+ vnet_buffer (p0)->ip.fib_index;
+
+ mtrie0 = &ip4_fib_get (vnet_buffer (p0)->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);
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);
}
diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c
index f4c51e22bfc..275bcc67b69 100644
--- a/src/vnet/ip/ip6_forward.c
+++ b/src/vnet/ip/ip6_forward.c
@@ -1213,23 +1213,15 @@ ip6_local_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
? IP6_ERROR_SRC_LOOKUP_MISS : error1);
}
- /* TODO maybe move to lookup? */
vnet_buffer (p0)->ip.fib_index =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p0)->sw_if_index[VLIB_RX]);
- vnet_buffer (p0)->ip.fib_index =
- (vnet_buffer (p0)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? vnet_buffer (p0)->ip.
- fib_index : vnet_buffer (p0)->sw_if_index[VLIB_TX];
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] != ~0 ?
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] :
+ vnet_buffer (p0)->ip.fib_index;
vnet_buffer (p1)->ip.fib_index =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p1)->sw_if_index[VLIB_RX]);
- vnet_buffer (p1)->ip.fib_index =
- (vnet_buffer (p1)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? vnet_buffer (p1)->ip.
- fib_index : vnet_buffer (p1)->sw_if_index[VLIB_TX];
-
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] != ~0 ?
+ vnet_buffer (p1)->sw_if_index[VLIB_TX] :
+ vnet_buffer (p1)->ip.fib_index;
skip_checks:
@@ -1343,14 +1335,10 @@ ip6_local_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
error0 = (!ip6_urpf_loose_check (im, p0, ip0)
? IP6_ERROR_SRC_LOOKUP_MISS : error0);
}
-
- vnet_buffer (p0)->ip.fib_index =
- vec_elt (im->fib_index_by_sw_if_index,
- vnet_buffer (p0)->sw_if_index[VLIB_RX]);
vnet_buffer (p0)->ip.fib_index =
- (vnet_buffer (p0)->sw_if_index[VLIB_TX] ==
- (u32) ~ 0) ? vnet_buffer (p0)->ip.
- fib_index : vnet_buffer (p0)->sw_if_index[VLIB_TX];
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] != ~0 ?
+ vnet_buffer (p0)->sw_if_index[VLIB_TX] :
+ vnet_buffer (p0)->ip.fib_index;
skip_check:
diff --git a/src/vnet/ip/ip6_forward.h b/src/vnet/ip/ip6_forward.h
index 790a2bb1ac1..fcdcabd1e00 100644
--- a/src/vnet/ip/ip6_forward.h
+++ b/src/vnet/ip/ip6_forward.h
@@ -76,7 +76,6 @@ ip6_lookup_inline (vlib_main_t * vm,
ip_lookup_next_t next0, next1;
ip6_header_t *ip0, *ip1;
ip6_address_t *dst_addr0, *dst_addr1;
- u32 fib_index0, fib_index1;
u32 flow_hash_config0, flow_hash_config1;
const dpo_id_t *dpo0, *dpo1;
const load_balance_t *lb0, *lb1;
@@ -106,20 +105,15 @@ ip6_lookup_inline (vlib_main_t * vm,
dst_addr0 = &ip0->dst_address;
dst_addr1 = &ip1->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]);
+ 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);
- 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];
-
- lbi0 = ip6_fib_table_fwding_lookup (im, fib_index0, dst_addr0);
- lbi1 = ip6_fib_table_fwding_lookup (im, fib_index1, dst_addr1);
+ lbi0 = ip6_fib_table_fwding_lookup (im,
+ vnet_buffer (p0)->ip.fib_index,
+ dst_addr0);
+ lbi1 = ip6_fib_table_fwding_lookup (im,
+ vnet_buffer (p1)->ip.fib_index,
+ dst_addr1);
lb0 = load_balance_get (lbi0);
lb1 = load_balance_get (lbi1);
@@ -233,26 +227,19 @@ ip6_lookup_inline (vlib_main_t * vm,
ip_lookup_next_t next0;
load_balance_t *lb0;
ip6_address_t *dst_addr0;
- u32 fib_index0, flow_hash_config0;
+ u32 flow_hash_config0;
const dpo_id_t *dpo0;
pi0 = from[0];
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];
-
- lbi0 = ip6_fib_table_fwding_lookup (im, fib_index0, dst_addr0);
+ ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p0);
+ lbi0 = ip6_fib_table_fwding_lookup (im,
+ vnet_buffer (p0)->ip.fib_index,
+ dst_addr0);
lb0 = load_balance_get (lbi0);
flow_hash_config0 = lb0->lb_hash_config;
diff --git a/src/vnet/ip/lookup.h b/src/vnet/ip/lookup.h
index a89546f5d92..ecabd817a00 100644
--- a/src/vnet/ip/lookup.h
+++ b/src/vnet/ip/lookup.h
@@ -211,6 +211,18 @@ do { \
} while (0)
/* *INDENT-ON* */
+always_inline void
+ip_lookup_set_buffer_fib_index (u32 * fib_index_by_sw_if_index,
+ vlib_buffer_t * b)
+{
+ vnet_buffer (b)->ip.fib_index =
+ vec_elt (fib_index_by_sw_if_index, vnet_buffer (b)->sw_if_index[VLIB_RX]);
+ vnet_buffer (b)->ip.fib_index =
+ (vnet_buffer (b)->sw_if_index[VLIB_TX] ==
+ (u32) ~ 0) ? vnet_buffer (b)->ip.
+ fib_index : vnet_buffer (b)->sw_if_index[VLIB_TX];
+}
+
typedef struct _vnet_ip_container_proxy_args
{
fib_prefix_t prefix;