#include <vnet/dpo/mpls_label_dpo.h>
#include <vnet/dpo/drop_dpo.h>
-#include "fib_entry_src.h"
-#include "fib_table.h"
-#include "fib_path_ext.h"
+#include <vnet/fib/fib_entry_src.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/fib/fib_path_ext.h>
+#include <vnet/fib/fib_urpf_list.h>
/*
* per-source type vft
return (fib_entry->fe_prefix.fp_proto);
}
+static dpo_proto_t
+fib_entry_get_payload_proto (const fib_entry_t * fib_entry)
+{
+ switch (fib_entry->fe_prefix.fp_proto)
+ {
+ case FIB_PROTOCOL_IP4:
+ case FIB_PROTOCOL_IP6:
+ return fib_proto_to_dpo(fib_entry->fe_prefix.fp_proto);
+ case FIB_PROTOCOL_MPLS:
+ return fib_entry->fe_prefix.fp_payload_proto;
+ }
+
+ return (fib_entry->fe_prefix.fp_proto);
+}
+
void
fib_entry_src_register (fib_source_t source,
const fib_entry_src_vft_t *vft)
}
break;
case FIB_FORW_CHAIN_TYPE_MPLS_EOS:
+ case FIB_FORW_CHAIN_TYPE_ETHERNET:
ASSERT(0);
break;
}
.fct = fct,
};
- lb_proto = fib_proto_to_dpo(fib_entry_get_proto(fib_entry));
+ lb_proto = fib_entry_get_payload_proto(fib_entry);
fib_path_list_walk(esrc->fes_pl,
fib_entry_src_collect_forwarding,
load_balance_multipath_update(dpo_lb,
ctx.next_hops,
fib_entry_calc_lb_flags(&ctx));
+ vec_free(ctx.next_hops);
+
+ /*
+ * if this entry is sourced by the uRPF-exempt source then we
+ * append the always present local0 interface (index 0) to the
+ * uRPF list so it is not empty. that way packets pass the loose check.
+ */
+ index_t ui = fib_path_list_get_urpf(esrc->fes_pl);
+
+ if (fib_entry_is_sourced(fib_entry_get_index(fib_entry),
+ FIB_SOURCE_URPF_EXEMPT) &&
+ (0 == fib_urpf_check_size(ui)))
+ {
+ /*
+ * The uRPF list we get from the path-list is shared by all
+ * other users of the list, but the uRPF exemption applies
+ * only to this prefix. So we need our own list.
+ */
+ ui = fib_urpf_list_alloc_and_lock();
+ fib_urpf_list_append(ui, 0);
+ fib_urpf_list_bake(ui);
+ load_balance_set_urpf(dpo_lb->dpoi_index, ui);
+ fib_urpf_list_unlock(ui);
+ }
+ else
+ {
+ load_balance_set_urpf(dpo_lb->dpoi_index, ui);
+ }
}
void
*/
fib_forward_chain_type_t fct;
fib_entry_src_t *esrc;
+ int insert;
fct = fib_entry_get_default_chain_type(fib_entry);
esrc = fib_entry_src_find(fib_entry, source, NULL);
+ /*
+ * Every entry has its own load-balance object. All changes to the entry's
+ * forwarding result in an inplace modify of the load-balance. This means
+ * the load-balance object only needs to be added to the forwarding
+ * DB once, when it is created.
+ */
+ insert = !dpo_id_is_valid(&fib_entry->fe_lb[fct]);
+
fib_entry_src_mk_lb(fib_entry, esrc, fct, &fib_entry->fe_lb[fct]);
- FIB_ENTRY_DBG(fib_entry, "install: %d",
- fib_entry->fe_lb[fct]);
+ ASSERT(dpo_id_is_valid(&fib_entry->fe_lb[fct]));
+ FIB_ENTRY_DBG(fib_entry, "install: %d", fib_entry->fe_lb[fct]);
/*
* insert the adj into the data-plane forwarding trie
*/
- fib_table_fwding_dpo_update(fib_entry->fe_fib_index,
- &fib_entry->fe_prefix,
- &fib_entry->fe_lb[fct]);
+ if (insert)
+ {
+ fib_table_fwding_dpo_update(fib_entry->fe_fib_index,
+ &fib_entry->fe_prefix,
+ &fib_entry->fe_lb[fct]);
+ }
if (FIB_FORW_CHAIN_TYPE_UNICAST_IP4 == fct ||
FIB_FORW_CHAIN_TYPE_UNICAST_IP6 == fct)
fct = fib_entry_get_default_chain_type(fib_entry);
/*
- * uninstall the forwarding chain for the given source from the
- * forwarding tables
+ * uninstall the forwarding chain from the forwarding tables
*/
FIB_ENTRY_DBG(fib_entry, "uninstall: %d",
fib_entry->fe_adj_index);
if (dpo_id_is_valid(&fib_entry->fe_lb[fct]))
{
- /* fib_forward_chain_type_t fct; */
- /* fib_path_ext_t *path_ext; */
-
fib_table_fwding_dpo_remove(
fib_entry->fe_fib_index,
&fib_entry->fe_prefix,
ASSERT(NULL != fib_entry_src_vft[source].fesv_path_swap);
- pl_flags = fib_entry_src_flags_2_path_list_flags(
- fib_entry_get_flags_i(fib_entry));
+ pl_flags = fib_entry_src_flags_2_path_list_flags(flags);
+
vec_foreach(rpath, rpaths)
{
fib_entry_flags_update(fib_entry, rpath, &pl_flags, esrc);
return (0);
}
+u32
+fib_entry_get_resolving_interface_for_source (fib_node_index_t entry_index,
+ fib_source_t source)
+{
+ fib_entry_t *fib_entry;
+ fib_entry_src_t *esrc;
+
+ fib_entry = fib_entry_get(entry_index);
+
+ esrc = fib_entry_src_find(fib_entry, source, NULL);
+
+ if (NULL != esrc)
+ {
+ if (FIB_NODE_INDEX_INVALID != esrc->fes_pl)
+ {
+ return (fib_path_list_get_resolving_interface(esrc->fes_pl));
+ }
+ }
+ return (~0);
+}
+
+fib_entry_flag_t
+fib_entry_get_flags_for_source (fib_node_index_t entry_index,
+ fib_source_t source)
+{
+ fib_entry_t *fib_entry;
+ fib_entry_src_t *esrc;
+
+ fib_entry = fib_entry_get(entry_index);
+
+ esrc = fib_entry_src_find(fib_entry, source, NULL);
+
+ if (NULL != esrc)
+ {
+ return (esrc->fes_entry_flags);
+ }
+
+ return (FIB_ENTRY_FLAG_NONE);
+}
+
fib_entry_flag_t
fib_entry_get_flags_i (const fib_entry_t *fib_entry)
{
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