fib_entry_src_vft[source].fesv_init(&esrc);
}
- if (fib_entry_has_multiple_srcs(fib_entry))
- {
- vec_add1(fib_entry->fe_u_src.fe_srcs, esrc);
-
- vec_sort_with_function(fib_entry->fe_u_src.fe_srcs,
- fib_entry_src_cmp_for_sort);
- }
- else
- {
- /*
- * is this the very first source
- */
- if (FIB_SOURCE_INVALID == fib_entry->fe_u_src.fe_src.fes_src)
- {
- clib_memcpy(&fib_entry->fe_u_src.fe_src, &esrc, sizeof(esrc));
- }
- else
- {
- /*
- * transitioning to multiple sources.
- * allocate the vecotr of sources.
- */
- fib_entry_src_t *srcs = NULL;
-
- vec_validate(srcs, 1);
-
- /*
- * sorted insert
- */
- if (fib_entry->fe_u_src.fe_src.fes_src < esrc.fes_src)
- {
- srcs[0] = fib_entry->fe_u_src.fe_src;
- srcs[1] = esrc;
- }
- else
- {
- srcs[0] = esrc;
- srcs[1] = fib_entry->fe_u_src.fe_src;
- }
- memset(&fib_entry->fe_u_src.fe_src, 0,
- sizeof(fib_entry->fe_u_src.fe_src));
- fib_entry->fe_u_src.fe_srcs = srcs;
-
- fib_entry->fe_node.fn_pad |= FIB_ENTRY_NODE_FLAG_MULTIPLE_SRCS;
- }
- }
-}
-
-u32
-fib_entry_has_multiple_srcs(const fib_entry_t * fib_entry)
-{
- return (fib_entry->fe_node.fn_pad & FIB_ENTRY_NODE_FLAG_MULTIPLE_SRCS);
+ vec_add1(fib_entry->fe_srcs, esrc);
+ vec_sort_with_function(fib_entry->fe_srcs,
+ fib_entry_src_cmp_for_sort);
}
static fib_entry_src_t *
-fib_entry_src_find (fib_entry_t *fib_entry,
+fib_entry_src_find (const fib_entry_t *fib_entry,
fib_source_t source,
u32 *index)
int ii;
ii = 0;
- if (fib_entry_has_multiple_srcs(fib_entry))
- {
- vec_foreach(esrc, fib_entry->fe_u_src.fe_srcs)
- {
- if (esrc->fes_src == source)
- {
- if (NULL != index)
- {
- *index = ii;
- }
- return (esrc);
- }
- else
- {
- ii++;
- }
- }
- }
- else
- {
- esrc = &fib_entry->fe_u_src.fe_src;
- if (esrc->fes_src == source)
- {
- if (NULL != index)
- {
- *index = -1;
- }
- return (esrc);
- }
- }
-
- return (NULL);
-}
-
-static fib_entry_src_t *
-fib_entry_src_delete (fib_entry_t *fib_entry,
- u32 index)
-
-{
- if (-1 == index)
- {
- ASSERT(!fib_entry_has_multiple_srcs(fib_entry));
- memset(&fib_entry->fe_u_src.fe_src, 0,
- sizeof(fib_entry->fe_u_src.fe_src));
- }
- else
+ vec_foreach(esrc, fib_entry->fe_srcs)
{
- vec_del1(fib_entry->fe_u_src.fe_srcs, index);
-
- ASSERT(vec_len(fib_entry->fe_u_src.fe_srcs));
- if (1 == vec_len(fib_entry->fe_u_src.fe_srcs))
- {
- /*
- * Is there much point in transitioning back?
- * We've paid the cost of the malloc for the vector,
- * why not keep it.
- * Favour memory use. If the expectation that multiple sources
- * is rare is correct, then we should expect this entry is
- * unlikely to need the vector again
- */
- fib_entry_src_t *srcs;
-
- srcs = fib_entry->fe_u_src.fe_srcs;
- fib_entry->fe_node.fn_pad &= ~FIB_ENTRY_NODE_FLAG_MULTIPLE_SRCS;
- clib_memcpy(&fib_entry->fe_u_src.fe_src,
- &srcs[0],
- sizeof(fib_entry->fe_u_src.fe_src));
- vec_free(srcs);
- }
- else
- {
- vec_sort_with_function(fib_entry->fe_u_src.fe_srcs,
- fib_entry_src_cmp_for_sort);
- }
+ if (esrc->fes_src == source)
+ {
+ if (NULL != index)
+ {
+ *index = ii;
+ }
+ return (esrc);
+ }
+ else
+ {
+ ii++;
+ }
}
return (NULL);
}
fib_path_ext_list_flush(&esrc->fes_path_exts);
- fib_entry_src_delete(fib_entry, index);
+ vec_del1(fib_entry->fe_srcs, index);
}
fib_entry_src_cover_res_t
vec_free(entries);
}
+/*
+ * fib_entry_src_action_copy
+ *
+ * copy a source data from another entry to this one
+ */
+fib_entry_t *
+fib_entry_src_action_copy (fib_entry_t *fib_entry,
+ const fib_entry_src_t *orig_src)
+{
+ fib_entry_src_t *esrc;
+
+ esrc = fib_entry_src_find_or_create(fib_entry, orig_src->fes_src);
+
+ *esrc = *orig_src;
+ esrc->fes_ref_count = 1;
+ esrc->fes_flags |= FIB_ENTRY_SRC_FLAG_INHERITED;
+ esrc->fes_flags &= ~FIB_ENTRY_SRC_FLAG_ACTIVE;
+ esrc->fes_entry_flags &= ~FIB_ENTRY_FLAG_COVERED_INHERIT;
+
+ /*
+ * the source owns a lock on the entry
+ */
+ fib_path_list_lock(esrc->fes_pl);
+ fib_entry_lock(fib_entry_get_index(fib_entry));
+
+ return (fib_entry);
+}
+
+/*
+ * fib_entry_src_action_update
+ *
+ * copy a source data from another entry to this one
+ */
+static fib_entry_src_t *
+fib_entry_src_action_update_from_cover (fib_entry_t *fib_entry,
+ const fib_entry_src_t *orig_src)
+{
+ fib_entry_src_t *esrc;
+
+ esrc = fib_entry_src_find_or_create(fib_entry, orig_src->fes_src);
+
+ /*
+ * the source owns a lock on the entry
+ */
+ fib_path_list_unlock(esrc->fes_pl);
+ esrc->fes_pl = orig_src->fes_pl;
+ fib_path_list_lock(esrc->fes_pl);
+
+ return (esrc);
+}
+
+static fib_table_walk_rc_t
+fib_entry_src_covered_inherit_add_i (fib_entry_t *fib_entry,
+ const fib_entry_src_t *cover_src)
+{
+ fib_entry_src_t *esrc;
+
+ esrc = fib_entry_src_find(fib_entry, cover_src->fes_src, NULL);
+
+ if (cover_src == esrc)
+ {
+ return (FIB_TABLE_WALK_CONTINUE);
+ }
+
+ if (NULL != esrc)
+ {
+ /*
+ * the covered entry already has this source.
+ */
+ if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT)
+ {
+ /*
+ * the covered source is itself a COVERED_INHERIT, i.e.
+ * it also pushes this source down the sub-tree.
+ * We consider this more specfic covered to be the owner
+ * of the sub-tree from this point down.
+ */
+ return (FIB_TABLE_WALK_SUB_TREE_STOP);
+ }
+ if (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED)
+ {
+ /*
+ * The covered's source data has been inherited, presumably
+ * from this cover, i.e. this is a modify.
+ */
+ esrc = fib_entry_src_action_update_from_cover(fib_entry, cover_src);
+ fib_entry_source_change(fib_entry, esrc->fes_src, esrc->fes_src);
+ }
+ else
+ {
+ /*
+ * The covered's source was not inherited and it is also
+ * not inherting. Nevertheless, it still owns the sub-tree from
+ * this point down.
+ */
+ return (FIB_TABLE_WALK_SUB_TREE_STOP);
+ }
+ }
+ else
+ {
+ /*
+ * The covered does not have this source - add it.
+ */
+ fib_source_t best_source;
+
+ best_source = fib_entry_get_best_source(
+ fib_entry_get_index(fib_entry));
+
+ fib_entry_src_action_copy(fib_entry, cover_src);
+ fib_entry_source_change(fib_entry, best_source, cover_src->fes_src);
+
+ }
+ return (FIB_TABLE_WALK_CONTINUE);
+}
+
+static fib_table_walk_rc_t
+fib_entry_src_covered_inherit_walk_add (fib_node_index_t fei,
+ void *ctx)
+{
+ return (fib_entry_src_covered_inherit_add_i(fib_entry_get(fei), ctx));
+}
+
+static fib_table_walk_rc_t
+fib_entry_src_covered_inherit_walk_remove (fib_node_index_t fei,
+ void *ctx)
+{
+ fib_entry_src_t *cover_src, *esrc;
+ fib_entry_t *fib_entry;
+
+ fib_entry = fib_entry_get(fei);
+
+ cover_src = ctx;
+ esrc = fib_entry_src_find(fib_entry, cover_src->fes_src, NULL);
+
+ if (cover_src == esrc)
+ {
+ return (FIB_TABLE_WALK_CONTINUE);
+ }
+
+ if (NULL != esrc)
+ {
+ /*
+ * the covered entry already has this source.
+ */
+ if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT)
+ {
+ /*
+ * the covered source is itself a COVERED_INHERIT, i.e.
+ * it also pushes this source down the sub-tree.
+ * We consider this more specfic covered to be the owner
+ * of the sub-tree from this point down.
+ */
+ return (FIB_TABLE_WALK_SUB_TREE_STOP);
+ }
+ if (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED)
+ {
+ /*
+ * The covered's source data has been inherited, presumably
+ * from this cover
+ */
+ fib_entry_src_flag_t remaining;
+
+ remaining = fib_entry_special_remove(fei, cover_src->fes_src);
+
+ ASSERT(FIB_ENTRY_SRC_FLAG_ADDED == remaining);
+ }
+ else
+ {
+ /*
+ * The covered's source was not inherited and it is also
+ * not inherting. Nevertheless, it still owns the sub-tree from
+ * this point down.
+ */
+ return (FIB_TABLE_WALK_SUB_TREE_STOP);
+ }
+ }
+ else
+ {
+ /*
+ * The covered does not have this source - that's an error,
+ * since it should have inherited, but there is nothing we can do
+ * about it now.
+ */
+ }
+ return (FIB_TABLE_WALK_CONTINUE);
+}
+
+void
+fib_entry_src_inherit (const fib_entry_t *cover,
+ fib_entry_t *covered)
+{
+ CLIB_UNUSED(fib_source_t source);
+ const fib_entry_src_t *src;
+
+ FOR_EACH_SRC_ADDED(cover, src, source,
+ ({
+ if ((src->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT) ||
+ (src->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED))
+ {
+ fib_entry_src_covered_inherit_add_i(covered, src);
+ }
+ }))
+}
+
+static void
+fib_entry_src_covered_inherit_add (fib_entry_t *fib_entry,
+ fib_source_t source)
+
+{
+ fib_entry_src_t *esrc;
+
+ esrc = fib_entry_src_find(fib_entry, source, NULL);
+
+ ASSERT(esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ACTIVE);
+
+ if ((esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT) ||
+ (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED))
+ {
+ fib_table_sub_tree_walk(fib_entry->fe_fib_index,
+ fib_entry->fe_prefix.fp_proto,
+ &fib_entry->fe_prefix,
+ fib_entry_src_covered_inherit_walk_add,
+ esrc);
+ }
+}
+
+static void
+fib_entry_src_covered_inherit_remove (fib_entry_t *fib_entry,
+ fib_entry_src_t *esrc)
+
+{
+ ASSERT(!(esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ACTIVE));
+
+ if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT)
+ {
+ fib_table_sub_tree_walk(fib_entry->fe_fib_index,
+ fib_entry->fe_prefix.fp_proto,
+ &fib_entry->fe_prefix,
+ fib_entry_src_covered_inherit_walk_remove,
+ esrc);
+ }
+}
+
void
fib_entry_src_action_activate (fib_entry_t *fib_entry,
fib_source_t source)
FIB_ENTRY_DBG(fib_entry, "activate: %d",
fib_entry->fe_parent);
+ /*
+ * If this source should push its state to covered prefixs, do that now.
+ */
+ fib_entry_src_covered_inherit_add(fib_entry, source);
+
if (0 != houston_we_are_go_for_install)
{
fib_entry_src_action_install(fib_entry, source);
FIB_ENTRY_DBG(fib_entry, "deactivate: %d", fib_entry->fe_parent);
+ /*
+ * If this source should pull its state from covered prefixs, do that now.
+ * If this source also has the INHERITED flag set then it has a cover
+ * that wants to push down forwarding. We only want the covereds to see
+ * one update.
+ */
+ fib_entry_src_covered_inherit_remove(fib_entry, esrc);
+
/*
* un-link from an old path-list. Check for any loops this will clear
*/
fib_entry->fe_sibling = FIB_NODE_INDEX_INVALID;
}
+static void
+fib_entry_src_action_fwd_update (const fib_entry_t *fib_entry,
+ fib_source_t source)
+{
+ fib_entry_src_t *esrc;
+
+ vec_foreach(esrc, fib_entry->fe_srcs)
+ {
+ if (NULL != fib_entry_src_vft[esrc->fes_src].fesv_fwd_update)
+ {
+ fib_entry_src_vft[esrc->fes_src].fesv_fwd_update(esrc,
+ fib_entry,
+ source);
+ }
+ }
+}
+
void
fib_entry_src_action_reactivate (fib_entry_t *fib_entry,
fib_source_t source)
if (fib_entry->fe_parent != esrc->fes_pl)
{
+ int remain_installed;
+
/*
* un-link from an old path-list. Check for any loops this will clear
*/
fib_entry_recursive_loop_detect_i(fib_entry->fe_parent);
fib_path_list_unlock(path_list_index);
+
+ /*
+ * call the source to reactive and get the go/no-go to remain installed
+ */
+ if (NULL != fib_entry_src_vft[source].fesv_reactivate)
+ {
+ remain_installed =
+ fib_entry_src_vft[source].fesv_reactivate(esrc, fib_entry);
+ }
+ else
+ {
+ remain_installed = 1;
+ }
+
+ /*
+ * If this source should push its state to covered prefixs, do that now.
+ */
+ fib_entry_src_covered_inherit_add(fib_entry, source);
+
+ if (!remain_installed)
+ {
+ fib_entry_src_action_uninstall(fib_entry);
+ return;
+ }
}
fib_entry_src_action_install(fib_entry, source);
+ fib_entry_src_action_fwd_update(fib_entry, source);
}
void
-fib_entry_src_action_installed (fib_entry_t *fib_entry,
+fib_entry_src_action_installed (const fib_entry_t *fib_entry,
fib_source_t source)
{
fib_entry_src_t *esrc;
fib_entry_src_vft[source].fesv_installed(esrc,
fib_entry);
}
+
+ fib_entry_src_action_fwd_update(fib_entry, source);
}
/*
esrc = fib_entry_src_find_or_create(fib_entry, source);
if (NULL == esrc)
+ {
return (fib_entry_src_action_add(fib_entry, source, flags, dpo));
+ }
old_path_list_index = esrc->fes_pl;
esrc->fes_entry_flags = flags;
return (fib_entry);
}
+fib_entry_src_flag_t
+fib_entry_src_action_remove_or_update_inherit (fib_entry_t *fib_entry,
+ fib_source_t source)
+{
+ fib_entry_src_t *esrc;
+
+ esrc = fib_entry_src_find(fib_entry, source, NULL);
+
+ if (NULL == esrc)
+ return (FIB_ENTRY_SRC_FLAG_ACTIVE);
+
+ if ((esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT) &&
+ (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED))
+ {
+ fib_entry_src_t *cover_src;
+ fib_node_index_t coveri;
+ fib_entry_t *cover;
+
+ /*
+ * this source was pushing inherited state, but so is its
+ * cover. Now that this source is going away, we need to
+ * pull the covers forwarding and use it to update the covereds.
+ * Go grab the path-list from the cover, rather than start a walk from
+ * the cover, so we don't recursively update this entry.
+ */
+ coveri = fib_table_get_less_specific(fib_entry->fe_fib_index,
+ &fib_entry->fe_prefix);
+
+ /*
+ * only the default route has itself as its own cover, but the
+ * default route cannot have inherited from something else.
+ */
+ ASSERT(coveri != fib_entry_get_index(fib_entry));
+
+ cover = fib_entry_get(coveri);
+ cover_src = fib_entry_src_find(cover, source, NULL);
+
+ ASSERT(NULL != cover_src);
+
+ esrc = fib_entry_src_action_update_from_cover(fib_entry, cover_src);
+ esrc->fes_entry_flags &= ~FIB_ENTRY_FLAG_COVERED_INHERIT;
+
+ /*
+ * Now push the new state from the cover down to the covereds
+ */
+ fib_entry_src_covered_inherit_add(fib_entry, source);
+
+ return (esrc->fes_flags);
+ }
+ else
+ {
+ return (fib_entry_src_action_remove(fib_entry, source));
+ }
+}
fib_entry_src_flag_t
fib_entry_src_action_remove (fib_entry_t *fib_entry,
if (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ACTIVE)
{
- fib_entry_src_action_deactivate(fib_entry, source);
+ fib_entry_src_action_deactivate(fib_entry, source);
}
old_path_list = esrc->fes_pl;
{
esrc->fes_entry_flags &= ~FIB_ENTRY_FLAG_ATTACHED;
}
+ if (rpath->frp_flags & FIB_ROUTE_PATH_DEAG)
+ {
+ esrc->fes_entry_flags |= FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT;
+ }
}
if (fib_route_attached_cross_table(fib_entry, rpath))
{
fib_entry_get_dpo_proto(fib_entry)));
esrc = fib_entry_src_find(fib_entry, source, NULL);
}
+ else
+ {
+ esrc->fes_entry_flags = flags;
+ }
/*
* swapping paths may create a new path-list (or may use an existing shared)
/*
* no more paths left from this source
*/
- fib_entry_src_action_remove(fib_entry, source);
+ fib_entry_src_action_remove_or_update_inherit(fib_entry, source);
return (FIB_ENTRY_SRC_FLAG_NONE);
}
}
fib_path_list_contribute_forwarding(
esrc->fes_pl,
fib_entry_get_default_chain_type(fib_entry),
+ FIB_PATH_LIST_FWD_FLAG_NONE,
dpo);
return (dpo_id_is_valid(dpo));
return (FIB_ENTRY_FLAG_NONE);
}
+fib_entry_flag_t
+fib_entry_get_flags_i (const fib_entry_t *fib_entry)
+{
+ fib_entry_flag_t flags;
+
+ /*
+ * the vector of sources is deliberately arranged in priority order
+ */
+ if (0 == vec_len(fib_entry->fe_srcs))
+ {
+ flags = FIB_ENTRY_FLAG_NONE;
+ }
+ else
+ {
+ fib_entry_src_t *esrc;
+
+ esrc = vec_elt_at_index(fib_entry->fe_srcs, 0);
+ flags = esrc->fes_entry_flags;
+ }
+
+ return (flags);
+}
+
void
fib_entry_set_source_data (fib_node_index_t fib_entry_index,
fib_source_t source,
Code Review / vpp.git / blobdiff