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-rw-r--r--src/vnet/mpls/mpls_lookup.c236
1 files changed, 158 insertions, 78 deletions
diff --git a/src/vnet/mpls/mpls_lookup.c b/src/vnet/mpls/mpls_lookup.c
index ace6a70fe80..3c6be7e85ec 100644
--- a/src/vnet/mpls/mpls_lookup.c
+++ b/src/vnet/mpls/mpls_lookup.c
@@ -20,8 +20,17 @@
#include <vnet/mpls/mpls.h>
#include <vnet/fib/mpls_fib.h>
#include <vnet/dpo/load_balance.h>
+#include <vnet/dpo/replicate_dpo.h>
-vlib_node_registration_t mpls_lookup_node;
+/**
+ * Static MPLS VLIB forwarding node
+ */
+static vlib_node_registration_t mpls_lookup_node;
+
+/**
+ * The arc/edge from the MPLS lookup node to the MPLS replicate node
+ */
+static u32 mpls_lookup_to_replicate_edge;
typedef struct {
u32 next_index;
@@ -156,81 +165,123 @@ mpls_lookup (vlib_main_t * vm,
lbi2 = mpls_fib_table_forwarding_lookup (lfib_index2, h2);
lbi3 = mpls_fib_table_forwarding_lookup (lfib_index3, h3);
- lb0 = load_balance_get(lbi0);
- lb1 = load_balance_get(lbi1);
- lb2 = load_balance_get(lbi2);
- lb3 = load_balance_get(lbi3);
-
hash_c0 = vnet_buffer(b0)->ip.flow_hash = 0;
hash_c1 = vnet_buffer(b1)->ip.flow_hash = 0;
hash_c2 = vnet_buffer(b2)->ip.flow_hash = 0;
hash_c3 = vnet_buffer(b3)->ip.flow_hash = 0;
- if (PREDICT_FALSE(lb0->lb_n_buckets > 1))
+ if (MPLS_IS_REPLICATE & lbi0)
{
- hash_c0 = vnet_buffer (b0)->ip.flow_hash =
- mpls_compute_flow_hash(h0, lb0->lb_hash_config);
+ next0 = mpls_lookup_to_replicate_edge;
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] =
+ (lbi0 & ~MPLS_IS_REPLICATE);
}
- if (PREDICT_FALSE(lb1->lb_n_buckets > 1))
+ else
{
- hash_c1 = vnet_buffer (b1)->ip.flow_hash =
- mpls_compute_flow_hash(h1, lb1->lb_hash_config);
+ lb0 = load_balance_get(lbi0);
+
+ if (PREDICT_FALSE(lb0->lb_n_buckets > 1))
+ {
+ hash_c0 = vnet_buffer (b0)->ip.flow_hash =
+ mpls_compute_flow_hash(h0, lb0->lb_hash_config);
+ }
+ ASSERT (lb0->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb0->lb_n_buckets));
+ dpo0 = load_balance_get_bucket_i(lb0,
+ (hash_c0 &
+ (lb0->lb_n_buckets_minus_1)));
+ next0 = dpo0->dpoi_next_node;
+
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+
+ vlib_increment_combined_counter
+ (cm, thread_index, lbi0, 1,
+ vlib_buffer_length_in_chain (vm, b0));
}
- if (PREDICT_FALSE(lb2->lb_n_buckets > 1))
+ if (MPLS_IS_REPLICATE & lbi1)
{
- hash_c2 = vnet_buffer (b2)->ip.flow_hash =
- mpls_compute_flow_hash(h2, lb2->lb_hash_config);
+ next1 = mpls_lookup_to_replicate_edge;
+ vnet_buffer (b1)->ip.adj_index[VLIB_TX] =
+ (lbi1 & ~MPLS_IS_REPLICATE);
}
- if (PREDICT_FALSE(lb3->lb_n_buckets > 1))
+ else
{
- hash_c3 = vnet_buffer (b3)->ip.flow_hash =
- mpls_compute_flow_hash(h3, lb3->lb_hash_config);
- }
-
- ASSERT (lb0->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb0->lb_n_buckets));
- ASSERT (lb1->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb1->lb_n_buckets));
- ASSERT (lb2->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb2->lb_n_buckets));
- ASSERT (lb3->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb3->lb_n_buckets));
-
- dpo0 = load_balance_get_bucket_i(lb0,
- (hash_c0 &
- (lb0->lb_n_buckets_minus_1)));
- dpo1 = load_balance_get_bucket_i(lb1,
- (hash_c1 &
- (lb1->lb_n_buckets_minus_1)));
- dpo2 = load_balance_get_bucket_i(lb2,
- (hash_c2 &
- (lb2->lb_n_buckets_minus_1)));
- dpo3 = load_balance_get_bucket_i(lb3,
- (hash_c3 &
- (lb3->lb_n_buckets_minus_1)));
+ lb1 = load_balance_get(lbi1);
- next0 = dpo0->dpoi_next_node;
- next1 = dpo1->dpoi_next_node;
- next2 = dpo2->dpoi_next_node;
- next3 = dpo3->dpoi_next_node;
+ if (PREDICT_FALSE(lb1->lb_n_buckets > 1))
+ {
+ hash_c1 = vnet_buffer (b1)->ip.flow_hash =
+ mpls_compute_flow_hash(h1, lb1->lb_hash_config);
+ }
+ ASSERT (lb1->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb1->lb_n_buckets));
+ dpo1 = load_balance_get_bucket_i(lb1,
+ (hash_c1 &
+ (lb1->lb_n_buckets_minus_1)));
+ next1 = dpo1->dpoi_next_node;
+
+ vnet_buffer (b1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
+
+ vlib_increment_combined_counter
+ (cm, thread_index, lbi1, 1,
+ vlib_buffer_length_in_chain (vm, b1));
+ }
+ if (MPLS_IS_REPLICATE & lbi2)
+ {
+ next2 = mpls_lookup_to_replicate_edge;
+ vnet_buffer (b2)->ip.adj_index[VLIB_TX] =
+ (lbi2 & ~MPLS_IS_REPLICATE);
+ }
+ else
+ {
+ lb2 = load_balance_get(lbi2);
- vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
- vnet_buffer (b1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
- vnet_buffer (b2)->ip.adj_index[VLIB_TX] = dpo2->dpoi_index;
- vnet_buffer (b3)->ip.adj_index[VLIB_TX] = dpo3->dpoi_index;
+ if (PREDICT_FALSE(lb2->lb_n_buckets > 1))
+ {
+ hash_c2 = vnet_buffer (b2)->ip.flow_hash =
+ mpls_compute_flow_hash(h2, lb2->lb_hash_config);
+ }
+ ASSERT (lb2->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb2->lb_n_buckets));
+ dpo2 = load_balance_get_bucket_i(lb2,
+ (hash_c2 &
+ (lb2->lb_n_buckets_minus_1)));
+ next2 = dpo2->dpoi_next_node;
+
+ vnet_buffer (b2)->ip.adj_index[VLIB_TX] = dpo2->dpoi_index;
+
+ vlib_increment_combined_counter
+ (cm, thread_index, lbi2, 1,
+ vlib_buffer_length_in_chain (vm, b2));
+ }
+ if (MPLS_IS_REPLICATE & lbi3)
+ {
+ next3 = mpls_lookup_to_replicate_edge;
+ vnet_buffer (b3)->ip.adj_index[VLIB_TX] =
+ (lbi3 & ~MPLS_IS_REPLICATE);
+ }
+ else
+ {
+ lb3 = load_balance_get(lbi3);
- vlib_increment_combined_counter
- (cm, thread_index, lbi0, 1,
- vlib_buffer_length_in_chain (vm, b0));
- vlib_increment_combined_counter
- (cm, thread_index, lbi1, 1,
- vlib_buffer_length_in_chain (vm, b1));
- vlib_increment_combined_counter
- (cm, thread_index, lbi2, 1,
- vlib_buffer_length_in_chain (vm, b2));
- vlib_increment_combined_counter
- (cm, thread_index, lbi3, 1,
- vlib_buffer_length_in_chain (vm, b3));
+ if (PREDICT_FALSE(lb3->lb_n_buckets > 1))
+ {
+ hash_c3 = vnet_buffer (b3)->ip.flow_hash =
+ mpls_compute_flow_hash(h3, lb3->lb_hash_config);
+ }
+ ASSERT (lb3->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb3->lb_n_buckets));
+ dpo3 = load_balance_get_bucket_i(lb3,
+ (hash_c3 &
+ (lb3->lb_n_buckets_minus_1)));
+ next3 = dpo3->dpoi_next_node;
+
+ vnet_buffer (b3)->ip.adj_index[VLIB_TX] = dpo3->dpoi_index;
+
+ vlib_increment_combined_counter
+ (cm, thread_index, lbi3, 1,
+ vlib_buffer_length_in_chain (vm, b3));
+ }
/*
* before we pop the label copy th values we need to maintain.
@@ -331,31 +382,41 @@ mpls_lookup (vlib_main_t * vm,
vnet_buffer(b0)->sw_if_index[VLIB_RX]);
lbi0 = mpls_fib_table_forwarding_lookup(lfib_index0, h0);
- lb0 = load_balance_get(lbi0);
-
hash_c0 = vnet_buffer(b0)->ip.flow_hash = 0;
- if (PREDICT_FALSE(lb0->lb_n_buckets > 1))
+
+ if (MPLS_IS_REPLICATE & lbi0)
{
- hash_c0 = vnet_buffer (b0)->ip.flow_hash =
- mpls_compute_flow_hash(h0, lb0->lb_hash_config);
+ next0 = mpls_lookup_to_replicate_edge;
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] =
+ (lbi0 & ~MPLS_IS_REPLICATE);
}
+ else
+ {
+ lb0 = load_balance_get(lbi0);
- ASSERT (lb0->lb_n_buckets > 0);
- ASSERT (is_pow2 (lb0->lb_n_buckets));
+ if (PREDICT_FALSE(lb0->lb_n_buckets > 1))
+ {
+ hash_c0 = vnet_buffer (b0)->ip.flow_hash =
+ mpls_compute_flow_hash(h0, lb0->lb_hash_config);
+ }
- dpo0 = load_balance_get_bucket_i(lb0,
- (hash_c0 &
- (lb0->lb_n_buckets_minus_1)));
+ ASSERT (lb0->lb_n_buckets > 0);
+ ASSERT (is_pow2 (lb0->lb_n_buckets));
- next0 = dpo0->dpoi_next_node;
- vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+ dpo0 = load_balance_get_bucket_i(lb0,
+ (hash_c0 &
+ (lb0->lb_n_buckets_minus_1)));
- vlib_increment_combined_counter
- (cm, thread_index, lbi0, 1,
- vlib_buffer_length_in_chain (vm, b0));
+ next0 = dpo0->dpoi_next_node;
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+
+ vlib_increment_combined_counter
+ (cm, thread_index, lbi0, 1,
+ vlib_buffer_length_in_chain (vm, b0));
+ }
/*
- * before we pop the label copy th values we need to maintain.
+ * before we pop the label copy, values we need to maintain.
* The label header is in network byte order.
* last byte is the TTL.
* bits 2 to 4 inclusive are the EXP bits
@@ -398,7 +459,7 @@ static char * mpls_error_strings[] = {
#undef mpls_error
};
-VLIB_REGISTER_NODE (mpls_lookup_node) = {
+VLIB_REGISTER_NODE (mpls_lookup_node, static) = {
.function = mpls_lookup,
.name = "mpls-lookup",
/* Takes a vector of packets. */
@@ -621,3 +682,22 @@ VLIB_REGISTER_NODE (mpls_load_balance_node) = {
};
VLIB_NODE_FUNCTION_MULTIARCH (mpls_load_balance_node, mpls_load_balance)
+
+
+static clib_error_t *
+mpls_lookup_init (vlib_main_t * vm)
+{
+ clib_error_t * error;
+
+ if ((error = vlib_call_init_function (vm, mpls_init)))
+ return error;
+
+ mpls_lookup_to_replicate_edge =
+ vlib_node_add_named_next(vm,
+ mpls_lookup_node.index,
+ "mpls-replicate");
+
+ return (NULL);
+}
+
+VLIB_INIT_FUNCTION (mpls_lookup_init);