MPLS Mcast
1 - interface-DPO
Used in the Data-plane to change a packet's input interface
2 - MPLS multicast FIB entry
Same as a unicast entry but it links to a replicate not a load-balance DPO
3 - Multicast MPLS tunnel
Update MPLS tunnels to use a FIB path-list to describe the endpoint[s]. Use the path-list to generate the forwarding chain (DPOs) to link to .
4 - Resolve a path via a local label (of an mLDP LSP)
For IP multicast entries to use an LSP in the replication list, we need to decribe the 'resolve-via-label' where the label is that of a multicast LSP.
5 - MPLS disposition path sets RPF-ID
For a interface-less LSP (i.e. mLDP not RSVP-TE) at the tail of the LSP we still need to perform an RPF check. An MPLS disposition DPO performs the MPLS pop validation checks and sets the RPF-ID in the packet.
6 - RPF check with per-entry RPF-ID
An RPF-ID is used instead of a real interface SW if index in the case the IP traffic arrives from an LSP that does not have an associated interface.
Change-Id: Ib92e177be919147bafeb599729abf3d1abc2f4b3
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/mfib/ip4_mfib.c b/src/vnet/mfib/ip4_mfib.c
index 164cafa..3ed7cba 100644
--- a/src/vnet/mfib/ip4_mfib.c
+++ b/src/vnet/mfib/ip4_mfib.c
@@ -72,6 +72,7 @@
mfib_table_entry_update(mfib_table->mft_index,
&prefix,
MFIB_SOURCE_DEFAULT_ROUTE,
+ MFIB_RPF_ID_NONE,
MFIB_ENTRY_FLAG_DROP);
}
diff --git a/src/vnet/mfib/ip6_mfib.c b/src/vnet/mfib/ip6_mfib.c
index 991b91c..116fee2 100644
--- a/src/vnet/mfib/ip6_mfib.c
+++ b/src/vnet/mfib/ip6_mfib.c
@@ -195,6 +195,7 @@
mfib_table_entry_update(mfib_table->mft_index,
&all_zeros,
MFIB_SOURCE_DEFAULT_ROUTE,
+ MFIB_RPF_ID_NONE,
MFIB_ENTRY_FLAG_DROP);
/*
diff --git a/src/vnet/mfib/mfib_entry.c b/src/vnet/mfib/mfib_entry.c
index 1aa8e08..847f25e 100644
--- a/src/vnet/mfib/mfib_entry.c
+++ b/src/vnet/mfib/mfib_entry.c
@@ -49,6 +49,15 @@
#endif
/**
+ * MFIB extensions to each path
+ */
+typedef struct mfib_path_ext_t_
+{
+ mfib_itf_flags_t mfpe_flags;
+ fib_node_index_t mfpe_path;
+} mfib_path_ext_t;
+
+/**
* The source of an MFIB entry
*/
typedef struct mfib_entry_src_t_
@@ -59,22 +68,39 @@
mfib_source_t mfes_src;
/**
- * The path-list of forwarding interfaces
- */
- fib_node_index_t mfes_pl;
-
- /**
* Route flags
*/
mfib_entry_flags_t mfes_flags;
/**
- * The hash table of all interfaces
+ * The path-list of forwarding interfaces
+ */
+ fib_node_index_t mfes_pl;
+
+ /**
+ * RPF-ID
+ */
+ fib_rpf_id_t mfes_rpf_id;
+
+ /**
+ * Hash table of path extensions
+ */
+ mfib_path_ext_t *mfes_exts;
+
+ /**
+ * The hash table of all interfaces.
+ * This is forwarding time information derived from the paths
+ * and their extensions.
*/
mfib_itf_t *mfes_itfs;
} mfib_entry_src_t;
/**
+ * Pool of path extensions
+ */
+static mfib_path_ext_t *mfib_path_ext_pool;
+
+/**
* String names for each source
*/
static const char *mfib_source_names[] = MFIB_SOURCE_NAMES;
@@ -123,6 +149,24 @@
MFIB_ENTRY_FORMAT_BRIEF));
}
+static inline mfib_path_ext_t *
+mfib_entry_path_ext_get (index_t mi)
+{
+ return (pool_elt_at_index(mfib_path_ext_pool, mi));
+}
+
+static u8 *
+format_mfib_entry_path_ext (u8 * s, va_list * args)
+{
+ mfib_path_ext_t *path_ext;
+ index_t mpi = va_arg(*args, index_t);
+
+ path_ext = mfib_entry_path_ext_get(mpi);
+ return (format(s, "path:%d flags:%U",
+ path_ext->mfpe_path,
+ format_mfib_itf_flags, path_ext->mfpe_flags));
+}
+
u8 *
format_mfib_entry (u8 * s, va_list * args)
{
@@ -141,6 +185,8 @@
if (level >= MFIB_ENTRY_FORMAT_DETAIL)
{
+ fib_node_index_t path_index, mpi;
+
s = format (s, "\n");
s = format (s, " fib:%d", mfib_entry->mfe_fib_index);
s = format (s, " index:%d", mfib_entry_get_index(mfib_entry));
@@ -153,6 +199,14 @@
{
s = fib_path_list_format(msrc->mfes_pl, s);
}
+ s = format (s, " Extensions:\n",
+ mfib_source_names[msrc->mfes_src]);
+ hash_foreach(path_index, mpi, msrc->mfes_exts,
+ ({
+ s = format(s, " %U\n", format_mfib_entry_path_ext, mpi);
+ }));
+ s = format (s, " Interface-Forwarding:\n",
+ mfib_source_names[msrc->mfes_src]);
hash_foreach(sw_if_index, mfi, msrc->mfes_itfs,
({
s = format(s, " %U\n", format_mfib_itf, mfi);
@@ -165,7 +219,7 @@
({
s = format(s, "\n %U", format_mfib_itf, mfi);
}));
-
+ s = format(s, "\n RPF-ID:%d", mfib_entry->mfe_rpf_id);
s = format(s, "\n %U-chain\n %U",
format_fib_forw_chain_type,
mfib_entry_get_default_chain_type(mfib_entry),
@@ -314,13 +368,6 @@
}
}
-static int
-mfib_entry_src_n_itfs (const mfib_entry_src_t *msrc)
-{
- return (hash_elts(msrc->mfes_itfs));
-}
-
-
static void
mfib_entry_last_lock_gone (fib_node_t *node)
{
@@ -338,7 +385,6 @@
mfib_entry_src_flush(msrc);
}
- fib_path_list_unlock(mfib_entry->mfe_parent);
vec_free(mfib_entry->mfe_srcs);
fib_node_deinit(&mfib_entry->mfe_node);
@@ -417,10 +463,9 @@
mfib_entry->mfe_flags = 0;
mfib_entry->mfe_fib_index = fib_index;
mfib_entry->mfe_prefix = *prefix;
- mfib_entry->mfe_parent = FIB_NODE_INDEX_INVALID;
- mfib_entry->mfe_sibling = FIB_NODE_INDEX_INVALID;
mfib_entry->mfe_srcs = NULL;
mfib_entry->mfe_itfs = NULL;
+ mfib_entry->mfe_rpf_id = MFIB_RPF_ID_NONE;
dpo_reset(&mfib_entry->mfe_rep);
@@ -431,10 +476,57 @@
return (mfib_entry);
}
+static inline mfib_path_ext_t *
+mfib_entry_path_ext_find (mfib_path_ext_t *exts,
+ fib_node_index_t path_index)
+{
+ uword *p;
+
+ p = hash_get(exts, path_index);
+
+ if (NULL != p)
+ {
+ return (mfib_entry_path_ext_get(p[0]));
+ }
+
+ return (NULL);
+}
+
+static mfib_path_ext_t*
+mfib_path_ext_add (mfib_entry_src_t *msrc,
+ fib_node_index_t path_index,
+ mfib_itf_flags_t mfi_flags)
+{
+ mfib_path_ext_t *path_ext;
+
+ pool_get(mfib_path_ext_pool, path_ext);
+
+ path_ext->mfpe_flags = mfi_flags;
+ path_ext->mfpe_path = path_index;
+
+ hash_set(msrc->mfes_exts, path_index,
+ path_ext - mfib_path_ext_pool);
+
+ return (path_ext);
+}
+
+static void
+mfib_path_ext_remove (mfib_entry_src_t *msrc,
+ fib_node_index_t path_index)
+{
+ mfib_path_ext_t *path_ext;
+
+ path_ext = mfib_entry_path_ext_find(msrc->mfes_exts, path_index);
+
+ hash_unset(msrc->mfes_exts, path_index);
+ pool_put(mfib_path_ext_pool, path_ext);
+}
+
typedef struct mfib_entry_collect_forwarding_ctx_t_
{
load_balance_path_t * next_hops;
fib_forward_chain_type_t fct;
+ mfib_entry_src_t *msrc;
} mfib_entry_collect_forwarding_ctx_t;
static int
@@ -455,6 +547,20 @@
return (!0);
}
+ /*
+ * If the path is not forwarding to use it
+ */
+ mfib_path_ext_t *path_ext;
+
+ path_ext = mfib_entry_path_ext_find(ctx->msrc->mfes_exts,
+ path_index);
+
+ if (NULL != path_ext &&
+ !(path_ext->mfpe_flags & MFIB_ITF_FLAG_FORWARD))
+ {
+ return (!0);
+ }
+
switch (ctx->fct)
{
case FIB_FORW_CHAIN_TYPE_MCAST_IP4:
@@ -483,46 +589,61 @@
}
static void
-mfib_entry_stack (mfib_entry_t *mfib_entry)
+mfib_entry_stack (mfib_entry_t *mfib_entry,
+ mfib_entry_src_t *msrc)
{
dpo_proto_t dp;
dp = fib_proto_to_dpo(mfib_entry_get_proto(mfib_entry));
- if (FIB_NODE_INDEX_INVALID != mfib_entry->mfe_parent)
+ if (NULL != msrc &&
+ FIB_NODE_INDEX_INVALID != msrc->mfes_pl)
{
mfib_entry_collect_forwarding_ctx_t ctx = {
.next_hops = NULL,
.fct = mfib_entry_get_default_chain_type(mfib_entry),
+ .msrc = msrc,
};
- fib_path_list_walk(mfib_entry->mfe_parent,
+ fib_path_list_walk(msrc->mfes_pl,
mfib_entry_src_collect_forwarding,
&ctx);
if (!(MFIB_ENTRY_FLAG_EXCLUSIVE & mfib_entry->mfe_flags))
{
- /*
- * each path contirbutes a next-hop. form a replicate
- * from those choices.
- */
- if (!dpo_id_is_valid(&mfib_entry->mfe_rep) ||
- dpo_is_drop(&mfib_entry->mfe_rep))
+ if (NULL == ctx.next_hops)
{
- dpo_id_t tmp_dpo = DPO_INVALID;
-
- dpo_set(&tmp_dpo,
- DPO_REPLICATE, dp,
- replicate_create(0, dp));
-
+ /*
+ * no next-hops, stack directly on the drop
+ */
dpo_stack(DPO_MFIB_ENTRY, dp,
&mfib_entry->mfe_rep,
- &tmp_dpo);
-
- dpo_reset(&tmp_dpo);
+ drop_dpo_get(dp));
}
- replicate_multipath_update(&mfib_entry->mfe_rep,
- ctx.next_hops);
+ else
+ {
+ /*
+ * each path contirbutes a next-hop. form a replicate
+ * from those choices.
+ */
+ if (!dpo_id_is_valid(&mfib_entry->mfe_rep) ||
+ dpo_is_drop(&mfib_entry->mfe_rep))
+ {
+ dpo_id_t tmp_dpo = DPO_INVALID;
+
+ dpo_set(&tmp_dpo,
+ DPO_REPLICATE, dp,
+ replicate_create(0, dp));
+
+ dpo_stack(DPO_MFIB_ENTRY, dp,
+ &mfib_entry->mfe_rep,
+ &tmp_dpo);
+
+ dpo_reset(&tmp_dpo);
+ }
+ replicate_multipath_update(&mfib_entry->mfe_rep,
+ ctx.next_hops);
+ }
}
else
{
@@ -548,11 +669,11 @@
}
}
-static void
-mfib_entry_forwarding_path_add (mfib_entry_src_t *msrc,
- const fib_route_path_t *rpath)
+static fib_node_index_t
+mfib_entry_src_path_add (mfib_entry_src_t *msrc,
+ const fib_route_path_t *rpath)
{
- fib_node_index_t old_pl_index;
+ fib_node_index_t path_index;
fib_route_path_t *rpaths;
ASSERT(!(MFIB_ENTRY_FLAG_EXCLUSIVE & msrc->mfes_flags));
@@ -563,32 +684,26 @@
rpaths = NULL;
vec_add1(rpaths, rpath[0]);
- old_pl_index = msrc->mfes_pl;
-
if (FIB_NODE_INDEX_INVALID == msrc->mfes_pl)
{
- msrc->mfes_pl =
- fib_path_list_create(FIB_PATH_LIST_FLAG_NO_URPF,
- rpaths);
+ /* A non-shared path-list */
+ msrc->mfes_pl = fib_path_list_create(FIB_PATH_LIST_FLAG_NO_URPF,
+ NULL);
+ fib_path_list_lock(msrc->mfes_pl);
}
- else
- {
- msrc->mfes_pl =
- fib_path_list_copy_and_path_add(msrc->mfes_pl,
- FIB_PATH_LIST_FLAG_NO_URPF,
- rpaths);
- }
- fib_path_list_lock(msrc->mfes_pl);
- fib_path_list_unlock(old_pl_index);
+
+ path_index = fib_path_list_path_add(msrc->mfes_pl, rpaths);
vec_free(rpaths);
+
+ return (path_index);
}
-static int
-mfib_entry_forwarding_path_remove (mfib_entry_src_t *msrc,
- const fib_route_path_t *rpath)
+static fib_node_index_t
+mfib_entry_src_path_remove (mfib_entry_src_t *msrc,
+ const fib_route_path_t *rpath)
{
- fib_node_index_t old_pl_index;
+ fib_node_index_t path_index;
fib_route_path_t *rpaths;
ASSERT(!(MFIB_ENTRY_FLAG_EXCLUSIVE & msrc->mfes_flags));
@@ -599,56 +714,31 @@
rpaths = NULL;
vec_add1(rpaths, rpath[0]);
- old_pl_index = msrc->mfes_pl;
-
- msrc->mfes_pl =
- fib_path_list_copy_and_path_remove(msrc->mfes_pl,
- FIB_PATH_LIST_FLAG_NONE,
- rpaths);
-
- fib_path_list_lock(msrc->mfes_pl);
- fib_path_list_unlock(old_pl_index);
+ path_index = fib_path_list_path_remove(msrc->mfes_pl, rpaths);
vec_free(rpaths);
- return (FIB_NODE_INDEX_INVALID != msrc->mfes_pl);
+ return (path_index);
}
static void
mfib_entry_recalculate_forwarding (mfib_entry_t *mfib_entry)
{
- fib_node_index_t old_pl_index;
mfib_entry_src_t *bsrc;
- old_pl_index = mfib_entry->mfe_parent;
-
/*
* copy the forwarding data from the bast source
*/
bsrc = mfib_entry_get_best_src(mfib_entry);
- if (NULL == bsrc)
+ if (NULL != bsrc)
{
- mfib_entry->mfe_parent = FIB_NODE_INDEX_INVALID;
- }
- else
- {
- mfib_entry->mfe_parent = bsrc->mfes_pl;
mfib_entry->mfe_flags = bsrc->mfes_flags;
mfib_entry->mfe_itfs = bsrc->mfes_itfs;
+ mfib_entry->mfe_rpf_id = bsrc->mfes_rpf_id;
}
- /*
- * re-stack the entry on the best forwarding info.
- */
- if (old_pl_index != mfib_entry->mfe_parent ||
- FIB_NODE_INDEX_INVALID == old_pl_index)
- {
- mfib_entry_stack(mfib_entry);
-
- fib_path_list_lock(mfib_entry->mfe_parent);
- fib_path_list_unlock(old_pl_index);
- }
+ mfib_entry_stack(mfib_entry, bsrc);
}
@@ -656,6 +746,7 @@
mfib_entry_create (u32 fib_index,
mfib_source_t source,
const mfib_prefix_t *prefix,
+ fib_rpf_id_t rpf_id,
mfib_entry_flags_t entry_flags)
{
fib_node_index_t mfib_entry_index;
@@ -666,6 +757,7 @@
&mfib_entry_index);
msrc = mfib_entry_src_find_or_create(mfib_entry, source);
msrc->mfes_flags = entry_flags;
+ msrc->mfes_rpf_id = rpf_id;
mfib_entry_recalculate_forwarding(mfib_entry);
@@ -682,13 +774,14 @@
mfib_entry_src_ok_for_delete (const mfib_entry_src_t *msrc)
{
return ((MFIB_ENTRY_FLAG_NONE == msrc->mfes_flags &&
- 0 == mfib_entry_src_n_itfs(msrc)));
+ 0 == fib_path_list_get_n_paths(msrc->mfes_pl)));
}
int
mfib_entry_update (fib_node_index_t mfib_entry_index,
mfib_source_t source,
mfib_entry_flags_t entry_flags,
+ fib_rpf_id_t rpf_id,
index_t repi)
{
mfib_entry_t *mfib_entry;
@@ -697,6 +790,7 @@
mfib_entry = mfib_entry_get(mfib_entry_index);
msrc = mfib_entry_src_find_or_create(mfib_entry, source);
msrc->mfes_flags = entry_flags;
+ msrc->mfes_rpf_id = rpf_id;
if (INDEX_INVALID != repi)
{
@@ -768,55 +862,79 @@
const fib_route_path_t *rpath,
mfib_itf_flags_t itf_flags)
{
+ fib_node_index_t path_index;
+ mfib_path_ext_t *path_ext;
+ mfib_itf_flags_t old, new;
mfib_entry_t *mfib_entry;
mfib_entry_src_t *msrc;
- mfib_itf_t *mfib_itf;
mfib_entry = mfib_entry_get(mfib_entry_index);
ASSERT(NULL != mfib_entry);
msrc = mfib_entry_src_find_or_create(mfib_entry, source);
/*
- * search for the interface in the current set
+ * add the path to the path-list. If it's a duplicate we'll get
+ * back the original path.
*/
- mfib_itf = mfib_entry_itf_find(msrc->mfes_itfs,
- rpath[0].frp_sw_if_index);
+ path_index = mfib_entry_src_path_add(msrc, rpath);
- if (NULL == mfib_itf)
+ /*
+ * find the path extension for that path
+ */
+ path_ext = mfib_entry_path_ext_find(msrc->mfes_exts, path_index);
+
+ if (NULL == path_ext)
{
- /*
- * this is a path we do not yet have. If it is forwarding then we
- * add it to the replication set
- */
- if (itf_flags & MFIB_ITF_FLAG_FORWARD)
- {
- mfib_entry_forwarding_path_add(msrc, rpath);
- }
- /*
- * construct a new ITF for this entry's list
- */
- mfib_entry_itf_add(msrc,
- rpath[0].frp_sw_if_index,
- mfib_itf_create(rpath[0].frp_sw_if_index,
- itf_flags));
+ old = MFIB_ITF_FLAG_NONE;
+ path_ext = mfib_path_ext_add(msrc, path_index, itf_flags);
}
else
{
- int was_forwarding = !!(mfib_itf->mfi_flags & MFIB_ITF_FLAG_FORWARD);
- int is_forwarding = !!(itf_flags & MFIB_ITF_FLAG_FORWARD);
+ old = path_ext->mfpe_flags;
+ path_ext->mfpe_flags = itf_flags;
+ }
- if (!was_forwarding && is_forwarding)
+ /*
+ * Has the path changed its contribution to the input interface set.
+ * Which only paths with interfaces can do...
+ */
+ if (~0 != rpath[0].frp_sw_if_index)
+ {
+ mfib_itf_t *mfib_itf;
+
+ new = itf_flags;
+
+ if (old != new)
{
- mfib_entry_forwarding_path_add(msrc, rpath);
+ if (MFIB_ITF_FLAG_NONE == new)
+ {
+ /*
+ * no more interface flags on this path, remove
+ * from the data-plane set
+ */
+ mfib_entry_itf_remove(msrc, rpath[0].frp_sw_if_index);
+ }
+ else if (MFIB_ITF_FLAG_NONE == old)
+ {
+ /*
+ * This interface is now contributing
+ */
+ mfib_entry_itf_add(msrc,
+ rpath[0].frp_sw_if_index,
+ mfib_itf_create(rpath[0].frp_sw_if_index,
+ itf_flags));
+ }
+ else
+ {
+ /*
+ * change of flag contributions
+ */
+ mfib_itf = mfib_entry_itf_find(msrc->mfes_itfs,
+ rpath[0].frp_sw_if_index);
+ /* Seen by packets inflight */
+ mfib_itf->mfi_flags = new;
+ }
}
- else if (was_forwarding && !is_forwarding)
- {
- mfib_entry_forwarding_path_remove(msrc, rpath);
- }
- /*
- * packets in flight see these updates.
- */
- mfib_itf->mfi_flags = itf_flags;
}
mfib_entry_recalculate_forwarding(mfib_entry);
@@ -833,9 +951,9 @@
mfib_source_t source,
const fib_route_path_t *rpath)
{
+ fib_node_index_t path_index;
mfib_entry_t *mfib_entry;
mfib_entry_src_t *msrc;
- mfib_itf_t *mfib_itf;
mfib_entry = mfib_entry_get(mfib_entry_index);
ASSERT(NULL != mfib_entry);
@@ -850,33 +968,23 @@
}
/*
- * search for the interface in the current set
+ * remove the path from the path-list. If it's not there we'll get
+ * back invalid
*/
- mfib_itf = mfib_entry_itf_find(msrc->mfes_itfs,
- rpath[0].frp_sw_if_index);
+ path_index = mfib_entry_src_path_remove(msrc, rpath);
- if (NULL == mfib_itf)
+ if (FIB_NODE_INDEX_INVALID != path_index)
{
/*
- * removing a path that does not exist
+ * don't need the extension, nor the interface anymore
*/
- return (mfib_entry_ok_for_delete(mfib_entry));
+ mfib_path_ext_remove(msrc, path_index);
+ if (~0 != rpath[0].frp_sw_if_index)
+ {
+ mfib_entry_itf_remove(msrc, rpath[0].frp_sw_if_index);
+ }
}
- /*
- * we have this path. If it is forwarding then we
- * remove it to the replication set
- */
- if (mfib_itf->mfi_flags & MFIB_ITF_FLAG_FORWARD)
- {
- mfib_entry_forwarding_path_remove(msrc, rpath);
- }
-
- /*
- * remove the interface/path from this entry's list
- */
- mfib_entry_itf_remove(msrc, rpath[0].frp_sw_if_index);
-
if (mfib_entry_src_ok_for_delete(msrc))
{
/*
@@ -1057,11 +1165,14 @@
fib_route_path_encode_t **api_rpaths)
{
mfib_entry_t *mfib_entry;
+ mfib_entry_src_t *bsrc;
mfib_entry = mfib_entry_get(mfib_entry_index);
- if (FIB_NODE_INDEX_INVALID != mfib_entry->mfe_parent)
+ bsrc = mfib_entry_get_best_src(mfib_entry);
+
+ if (FIB_NODE_INDEX_INVALID != bsrc->mfes_pl)
{
- fib_path_list_walk(mfib_entry->mfe_parent,
+ fib_path_list_walk(bsrc->mfes_pl,
fib_path_encode,
api_rpaths);
}
diff --git a/src/vnet/mfib/mfib_entry.h b/src/vnet/mfib/mfib_entry.h
index dc8f49a..4f62b18 100644
--- a/src/vnet/mfib/mfib_entry.h
+++ b/src/vnet/mfib/mfib_entry.h
@@ -42,17 +42,6 @@
* The index of the FIB table this entry is in
*/
u32 mfe_fib_index;
- /**
- * the path-list for which this entry is a child. This is also the path-list
- * that is contributing forwarding for this entry.
- */
- fib_node_index_t mfe_parent;
- /**
- * index of this entry in the parent's child list.
- * This is set when this entry is added as a child, but can also
- * be changed by the parent as it manages its list.
- */
- u32 mfe_sibling;
/**
* A vector of sources contributing forwarding
@@ -65,7 +54,7 @@
CLIB_CACHE_LINE_ALIGN_MARK(cacheline1);
/**
- * The Replicate DPO used for forwarding.
+ * The DPO used for forwarding; replicate, drop, etc..
*/
dpo_id_t mfe_rep;
@@ -75,6 +64,11 @@
mfib_entry_flags_t mfe_flags;
/**
+ * RPF-ID used when the packets ingress not from an interface
+ */
+ fib_rpf_id_t mfe_rpf_id;
+
+ /**
* A hash table of interfaces
*/
mfib_itf_t *mfe_itfs;
@@ -90,11 +84,13 @@
extern fib_node_index_t mfib_entry_create(u32 fib_index,
mfib_source_t source,
const mfib_prefix_t *prefix,
+ fib_rpf_id_t rpf_id,
mfib_entry_flags_t entry_flags);
extern int mfib_entry_update(fib_node_index_t fib_entry_index,
mfib_source_t source,
mfib_entry_flags_t entry_flags,
+ fib_rpf_id_t rpf_id,
index_t rep_dpo);
extern void mfib_entry_path_update(fib_node_index_t fib_entry_index,
diff --git a/src/vnet/mfib/mfib_forward.c b/src/vnet/mfib/mfib_forward.c
index 5fe0a57..3d8f4f9 100644
--- a/src/vnet/mfib/mfib_forward.c
+++ b/src/vnet/mfib/mfib_forward.c
@@ -380,13 +380,27 @@
* for the case of throughput traffic that is not replicated
* to the host stack nor sets local flags
*/
- if (PREDICT_TRUE(NULL != mfi0))
+
+ /*
+ * If the mfib entry has a configured RPF-ID check that
+ * in preference to an interface based RPF
+ */
+ if (MFIB_RPF_ID_NONE != mfe0->mfe_rpf_id)
{
- iflags0 = mfi0->mfi_flags;
+ iflags0 = (mfe0->mfe_rpf_id == vnet_buffer(b0)->ip.rpf_id ?
+ MFIB_ITF_FLAG_ACCEPT :
+ MFIB_ITF_FLAG_NONE);
}
else
{
- iflags0 = MFIB_ITF_FLAG_NONE;
+ if (PREDICT_TRUE(NULL != mfi0))
+ {
+ iflags0 = mfi0->mfi_flags;
+ }
+ else
+ {
+ iflags0 = MFIB_ITF_FLAG_NONE;
+ }
}
eflags0 = mfe0->mfe_flags;
@@ -436,17 +450,16 @@
{
mfib_forward_rpf_trace_t *t0;
- t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
+ t0 = vlib_add_trace (vm, node, b0, sizeof (*t0));
t0->entry_index = mfei0;
+ t0->itf_flags = iflags0;
if (NULL == mfi0)
{
t0->sw_if_index = ~0;
- t0->itf_flags = MFIB_ITF_FLAG_NONE;
}
else
{
t0->sw_if_index = mfi0->mfi_sw_if_index;
- t0->itf_flags = mfi0->mfi_flags;
}
}
vlib_validate_buffer_enqueue_x1 (vm, node, next,
@@ -478,7 +491,7 @@
.n_next_nodes = MFIB_FORWARD_RPF_N_NEXT,
.next_nodes = {
- [MFIB_FORWARD_RPF_NEXT_DROP] = "error-drop",
+ [MFIB_FORWARD_RPF_NEXT_DROP] = "ip4-drop",
},
};
@@ -503,7 +516,7 @@
.n_next_nodes = MFIB_FORWARD_RPF_N_NEXT,
.next_nodes = {
- [MFIB_FORWARD_RPF_NEXT_DROP] = "error-drop",
+ [MFIB_FORWARD_RPF_NEXT_DROP] = "ip6-drop",
},
};
diff --git a/src/vnet/mfib/mfib_table.c b/src/vnet/mfib/mfib_table.c
index 3b4bd98..7ffe894 100644
--- a/src/vnet/mfib/mfib_table.c
+++ b/src/vnet/mfib/mfib_table.c
@@ -165,6 +165,7 @@
mfib_table_entry_update (u32 fib_index,
const mfib_prefix_t *prefix,
mfib_source_t source,
+ fib_rpf_id_t rpf_id,
mfib_entry_flags_t entry_flags)
{
fib_node_index_t mfib_entry_index;
@@ -181,7 +182,8 @@
* update to a non-existing entry with non-zero flags
*/
mfib_entry_index = mfib_entry_create(fib_index, source,
- prefix, entry_flags);
+ prefix, rpf_id,
+ entry_flags);
mfib_table_entry_insert(mfib_table, prefix, mfib_entry_index);
}
@@ -198,6 +200,7 @@
if (mfib_entry_update(mfib_entry_index,
source,
entry_flags,
+ rpf_id,
INDEX_INVALID))
{
/*
@@ -230,6 +233,7 @@
mfib_entry_index = mfib_entry_create(fib_index,
source,
prefix,
+ MFIB_RPF_ID_NONE,
MFIB_ENTRY_FLAG_NONE);
mfib_table_entry_insert(mfib_table, prefix, mfib_entry_index);
@@ -304,6 +308,7 @@
mfib_entry_index = mfib_entry_create(fib_index,
source,
prefix,
+ MFIB_RPF_ID_NONE,
MFIB_ENTRY_FLAG_NONE);
mfib_table_entry_insert(mfib_table, prefix, mfib_entry_index);
@@ -311,6 +316,7 @@
mfib_entry_update(mfib_entry_index, source,
(MFIB_ENTRY_FLAG_EXCLUSIVE | entry_flags),
+ MFIB_RPF_ID_NONE,
rep_dpo);
return (mfib_entry_index);
diff --git a/src/vnet/mfib/mfib_table.h b/src/vnet/mfib/mfib_table.h
index 95239f7..83aa04e 100644
--- a/src/vnet/mfib/mfib_table.h
+++ b/src/vnet/mfib/mfib_table.h
@@ -122,6 +122,7 @@
extern fib_node_index_t mfib_table_entry_update(u32 fib_index,
const mfib_prefix_t *prefix,
mfib_source_t source,
+ fib_rpf_id_t rpf_id,
mfib_entry_flags_t flags);
/**
diff --git a/src/vnet/mfib/mfib_test.c b/src/vnet/mfib/mfib_test.c
index 36a303e..7c92ae9 100644
--- a/src/vnet/mfib/mfib_test.c
+++ b/src/vnet/mfib/mfib_test.c
@@ -20,6 +20,8 @@
#include <vnet/mfib/mfib_signal.h>
#include <vnet/mfib/ip6_mfib.h>
#include <vnet/fib/fib_path_list.h>
+#include <vnet/fib/fib_test.h>
+#include <vnet/fib/fib_table.h>
#include <vnet/dpo/replicate_dpo.h>
#include <vnet/adj/adj_mcast.h>
@@ -201,8 +203,8 @@
if (DPO_RECEIVE != dt)
{
MFIB_TEST_REP((ai == dpo->dpoi_index),
- "bucket %d stacks on %U",
- bucket,
+ "bucket %d [exp:%d] stacks on %U",
+ bucket, ai,
format_dpo_id, dpo, 0);
}
}
@@ -734,6 +736,7 @@
mfib_table_entry_update(fib_index,
pfx_s_g,
MFIB_SOURCE_API,
+ MFIB_RPF_ID_NONE,
MFIB_ENTRY_FLAG_SIGNAL);
MFIB_TEST(mfib_test_entry(mfei,
MFIB_ENTRY_FLAG_SIGNAL,
@@ -824,6 +827,7 @@
mfib_table_entry_update(fib_index,
pfx_s_g,
MFIB_SOURCE_API,
+ MFIB_RPF_ID_NONE,
(MFIB_ENTRY_FLAG_SIGNAL |
MFIB_ENTRY_FLAG_CONNECTED));
MFIB_TEST(mfib_test_entry(mfei,
@@ -965,6 +969,7 @@
mfib_table_entry_update(fib_index,
pfx_s_g,
MFIB_SOURCE_API,
+ MFIB_RPF_ID_NONE,
MFIB_ENTRY_FLAG_NONE);
mfei = mfib_table_lookup_exact_match(fib_index,
pfx_s_g);
@@ -1074,6 +1079,117 @@
dpo_reset(&td);
/*
+ * A Multicast LSP. This a mLDP head-end
+ */
+ fib_node_index_t ai_mpls_10_10_10_1, lfei;
+ ip46_address_t nh_10_10_10_1 = {
+ .ip4 = {
+ .as_u32 = clib_host_to_net_u32(0x0a0a0a01),
+ },
+ };
+ ai_mpls_10_10_10_1 = adj_nbr_add_or_lock(FIB_PROTOCOL_IP4,
+ VNET_LINK_MPLS,
+ &nh_10_10_10_1,
+ tm->hw[0]->sw_if_index);
+
+ fib_prefix_t pfx_3500 = {
+ .fp_len = 21,
+ .fp_proto = FIB_PROTOCOL_MPLS,
+ .fp_label = 3500,
+ .fp_eos = MPLS_EOS,
+ .fp_payload_proto = DPO_PROTO_IP4,
+ };
+ fib_test_rep_bucket_t mc_0 = {
+ .type = FT_REP_LABEL_O_ADJ,
+ .label_o_adj = {
+ .adj = ai_mpls_10_10_10_1,
+ .label = 3300,
+ .eos = MPLS_EOS,
+ },
+ };
+ mpls_label_t *l3300 = NULL;
+ vec_add1(l3300, 3300);
+
+ /*
+ * MPLS enable an interface so we get the MPLS table created
+ */
+ mpls_sw_interface_enable_disable(&mpls_main,
+ tm->hw[0]->sw_if_index,
+ 1);
+
+ lfei = fib_table_entry_update_one_path(0, // default MPLS Table
+ &pfx_3500,
+ FIB_SOURCE_API,
+ FIB_ENTRY_FLAG_MULTICAST,
+ FIB_PROTOCOL_IP4,
+ &nh_10_10_10_1,
+ tm->hw[0]->sw_if_index,
+ ~0, // invalid fib index
+ 1,
+ l3300,
+ FIB_ROUTE_PATH_FLAG_NONE);
+ MFIB_TEST(fib_test_validate_entry(lfei,
+ FIB_FORW_CHAIN_TYPE_MPLS_EOS,
+ 1,
+ &mc_0),
+ "3500 via replicate over 10.10.10.1");
+
+ /*
+ * An (S,G) that resolves via the mLDP head-end
+ */
+ fib_route_path_t path_via_mldp = {
+ .frp_proto = FIB_PROTOCOL_MPLS,
+ .frp_local_label = pfx_3500.fp_label,
+ .frp_eos = MPLS_EOS,
+ .frp_sw_if_index = 0xffffffff,
+ .frp_fib_index = 0,
+ .frp_weight = 1,
+ .frp_flags = FIB_ROUTE_PATH_FLAG_NONE,
+ };
+ dpo_id_t mldp_dpo = DPO_INVALID;
+
+ fib_entry_contribute_forwarding(lfei,
+ FIB_FORW_CHAIN_TYPE_MPLS_EOS,
+ &mldp_dpo);
+
+ mfei = mfib_table_entry_path_update(fib_index,
+ pfx_s_g,
+ MFIB_SOURCE_API,
+ &path_via_mldp,
+ MFIB_ITF_FLAG_FORWARD);
+
+ MFIB_TEST(mfib_test_entry(mfei,
+ MFIB_ENTRY_FLAG_NONE,
+ 1,
+ DPO_REPLICATE, mldp_dpo.dpoi_index),
+ "%U over-mLDP replicate OK",
+ format_mfib_prefix, pfx_s_g);
+
+ /*
+ * add a for-us path. this tests two types of non-attached paths on one entry
+ */
+ mfei = mfib_table_entry_path_update(fib_index,
+ pfx_s_g,
+ MFIB_SOURCE_API,
+ &path_for_us,
+ MFIB_ITF_FLAG_FORWARD);
+ MFIB_TEST(mfib_test_entry(mfei,
+ MFIB_ENTRY_FLAG_NONE,
+ 2,
+ DPO_REPLICATE, mldp_dpo.dpoi_index,
+ DPO_RECEIVE, 0),
+ "%U mLDP+for-us replicate OK",
+ format_mfib_prefix, pfx_s_g);
+
+ mfib_table_entry_delete(fib_index,
+ pfx_s_g,
+ MFIB_SOURCE_API);
+ fib_table_entry_delete(0,
+ &pfx_3500,
+ FIB_SOURCE_API);
+ dpo_reset(&mldp_dpo);
+
+ /*
* Unlock the table - it's the last lock so should be gone thereafter
*/
mfib_table_unlock(fib_index, PROTO);
@@ -1087,6 +1203,13 @@
adj_unlock(ai_3);
/*
+ * MPLS disable the interface
+ */
+ mpls_sw_interface_enable_disable(&mpls_main,
+ tm->hw[0]->sw_if_index,
+ 0);
+
+ /*
* test we've leaked no resources
*/
MFIB_TEST(0 == adj_mcast_db_size(), "%d MCAST adjs", adj_mcast_db_size());