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-rw-r--r--src/vnet/CMakeLists.txt1
-rw-r--r--src/vnet/dpo/dpo.c2
-rw-r--r--src/vnet/dpo/dpo.h2
-rw-r--r--src/vnet/dpo/pw_cw.c315
-rw-r--r--src/vnet/dpo/pw_cw.h80
-rw-r--r--src/vnet/fib/fib_api.c2
-rw-r--r--src/vnet/fib/fib_path.c13
-rw-r--r--src/vnet/fib/fib_path.h8
-rw-r--r--src/vnet/fib/fib_types.api6
-rw-r--r--src/vnet/fib/fib_types.c4
-rw-r--r--src/vnet/fib/fib_types.h5
11 files changed, 435 insertions, 3 deletions
diff --git a/src/vnet/CMakeLists.txt b/src/vnet/CMakeLists.txt
index 68e806ed412..91a5a77dc00 100644
--- a/src/vnet/CMakeLists.txt
+++ b/src/vnet/CMakeLists.txt
@@ -1365,6 +1365,7 @@ list(APPEND VNET_SOURCES
dpo/mpls_label_dpo.c
dpo/l3_proxy_dpo.c
dpo/dvr_dpo.c
+ dpo/pw_cw.c
)
list(APPEND VNET_MULTIARCH_SOURCES
diff --git a/src/vnet/dpo/dpo.c b/src/vnet/dpo/dpo.c
index 13ae37a74a8..d5865d13a1d 100644
--- a/src/vnet/dpo/dpo.c
+++ b/src/vnet/dpo/dpo.c
@@ -43,6 +43,7 @@
#include <vnet/dpo/dvr_dpo.h>
#include <vnet/dpo/l3_proxy_dpo.h>
#include <vnet/dpo/ip6_ll_dpo.h>
+#include <vnet/dpo/pw_cw.h>
/**
* Array of char* names for the DPO types and protos
@@ -588,6 +589,7 @@ dpo_module_init (vlib_main_t * vm)
mpls_disp_dpo_module_init();
dvr_dpo_module_init();
l3_proxy_dpo_module_init();
+ pw_cw_dpo_module_init();
return (NULL);
}
diff --git a/src/vnet/dpo/dpo.h b/src/vnet/dpo/dpo.h
index 0eeca67b74b..73ad9ad0ff0 100644
--- a/src/vnet/dpo/dpo.h
+++ b/src/vnet/dpo/dpo.h
@@ -124,6 +124,7 @@ typedef enum dpo_type_t_ {
DPO_BIER_DISP_TABLE,
DPO_BIER_DISP_ENTRY,
DPO_IP6_LL,
+ DPO_PW_CW,
DPO_LAST,
} __attribute__((packed)) dpo_type_t;
@@ -159,6 +160,7 @@ typedef enum dpo_type_t_ {
[DPO_BIER_DISP_ENTRY] = "bier-disp-entry", \
[DPO_BIER_DISP_TABLE] = "bier-disp-table", \
[DPO_IP6_LL] = "ip6-link-local", \
+ [DPO_PW_CW] = "PW-CW", \
}
/**
diff --git a/src/vnet/dpo/pw_cw.c b/src/vnet/dpo/pw_cw.c
new file mode 100644
index 00000000000..8c16c33cf24
--- /dev/null
+++ b/src/vnet/dpo/pw_cw.c
@@ -0,0 +1,315 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/dpo/pw_cw.h>
+#include <vnet/fib/fib_node.h>
+
+#ifndef CLIB_MARCH_VARIANT
+
+/*
+ * pool of all MPLS Label DPOs
+ */
+pw_cw_dpo_t *pw_cw_dpo_pool;
+
+static pw_cw_dpo_t *
+pw_cw_dpo_alloc (void)
+{
+ pw_cw_dpo_t *pwcw;
+
+ pool_get_aligned_zero(pw_cw_dpo_pool, pwcw, 8);
+
+ return (pwcw);
+}
+
+static index_t
+pw_cw_dpo_get_index (pw_cw_dpo_t *pwcw)
+{
+ return (pwcw - pw_cw_dpo_pool);
+}
+
+void
+pw_cw_dpo_create (const dpo_id_t *parent,
+ dpo_id_t *dpo)
+{
+ pw_cw_dpo_t *pwcw;
+
+ pwcw = pw_cw_dpo_alloc();
+
+ /*
+ * stack this disposition object on the parent given
+ */
+ dpo_stack(DPO_PW_CW,
+ parent->dpoi_proto,
+ &pwcw->pwcw_parent,
+ parent);
+
+ /*
+ * set up the return DPO to refer to this object
+ */
+ dpo_set(dpo,
+ DPO_PW_CW,
+ parent->dpoi_proto,
+ pw_cw_dpo_get_index(pwcw));
+}
+
+u8*
+format_pw_cw_dpo (u8 *s, va_list *args)
+{
+ index_t pwcwi = va_arg (*args, index_t);
+ u32 indent = va_arg (*args, u32);
+ pw_cw_dpo_t *pwcw;
+
+ if (pool_is_free_index(pw_cw_dpo_pool, pwcwi))
+ {
+ /*
+ * the packet trace can be printed after the DPO has been deleted
+ */
+ return (format(s, "pw-cw[???,%d]:", pwcwi));
+ }
+
+ pwcw = pw_cw_dpo_get(pwcwi);
+ s = format(s, "pw-cw[%d]:", pwcwi);
+
+ s = format(s, "\n%U", format_white_space, indent);
+ s = format(s, "%U", format_dpo_id, &pwcw->pwcw_parent, indent+2);
+
+ return (s);
+}
+
+static void
+pw_cw_dpo_lock (dpo_id_t *dpo)
+{
+ pw_cw_dpo_t *pwcw;
+
+ pwcw = pw_cw_dpo_get(dpo->dpoi_index);
+
+ pwcw->pwcw_locks++;
+}
+
+static void
+pw_cw_dpo_unlock (dpo_id_t *dpo)
+{
+ pw_cw_dpo_t *pwcw;
+
+ pwcw = pw_cw_dpo_get(dpo->dpoi_index);
+
+ pwcw->pwcw_locks--;
+
+ if (0 == pwcw->pwcw_locks)
+ {
+ dpo_reset(&pwcw->pwcw_parent);
+ pool_put(pw_cw_dpo_pool, pwcw);
+ }
+}
+#endif /* CLIB_MARCH_VARIANT */
+
+/**
+ * @brief A struct to hold tracing information for the MPLS label imposition
+ * node.
+ */
+typedef struct pw_cw_trace_t_
+{
+ /**
+ * The CW popped
+ */
+ u32 cw;
+} pw_cw_trace_t;
+
+always_inline uword
+pw_cw_pop_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ u32 n_left_from, next_index, * from, * to_next;
+
+ from = vlib_frame_vector_args(from_frame);
+ n_left_from = from_frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ pw_cw_dpo_t *pwcw0, *pwcw1;
+ u32 bi0, pwcwi0, bi1, pwcwi1;
+ vlib_buffer_t * b0, *b1;
+ u32 next0, next1;
+
+ bi0 = to_next[0] = from[0];
+ bi1 = to_next[1] = from[1];
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t * p2, * p3;
+
+ p2 = vlib_get_buffer(vm, from[2]);
+ p3 = vlib_get_buffer(vm, from[3]);
+
+ vlib_prefetch_buffer_header(p2, STORE);
+ vlib_prefetch_buffer_header(p3, STORE);
+
+ CLIB_PREFETCH(p2->data, sizeof(pw_cw_t), STORE);
+ CLIB_PREFETCH(p3->data, sizeof(pw_cw_t), STORE);
+ }
+
+ from += 2;
+ to_next += 2;
+ n_left_from -= 2;
+ n_left_to_next -= 2;
+
+ b0 = vlib_get_buffer(vm, bi0);
+ b1 = vlib_get_buffer(vm, bi1);
+
+ /* get the next parent DPO for the next pop */
+ pwcwi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
+ pwcwi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
+ pwcw0 = pw_cw_dpo_get(pwcwi0);
+ pwcw1 = pw_cw_dpo_get(pwcwi1);
+
+ next0 = pwcw0->pwcw_parent.dpoi_next_node;
+ next1 = pwcw1->pwcw_parent.dpoi_next_node;
+
+ vnet_buffer(b0)->ip.adj_index[VLIB_TX] = pwcw0->pwcw_parent.dpoi_index;
+ vnet_buffer(b1)->ip.adj_index[VLIB_TX] = pwcw1->pwcw_parent.dpoi_index;
+
+ if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ pw_cw_trace_t *tr = vlib_add_trace(vm, node, b0, sizeof(*tr));
+
+ tr->cw = *((pw_cw_t*) vlib_buffer_get_current(b0));
+ }
+ if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ pw_cw_trace_t *tr = vlib_add_trace(vm, node, b1, sizeof(*tr));
+
+ tr->cw = *((pw_cw_t*) vlib_buffer_get_current(b1));
+ }
+
+ /* pop the PW CW */
+ vlib_buffer_advance (b0, sizeof(pw_cw_t));
+ vlib_buffer_advance (b1, sizeof(pw_cw_t));
+
+ vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
+ n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ pw_cw_dpo_t *pwcw0;
+ vlib_buffer_t * b0;
+ u32 bi0, pwcwi0;
+ u32 next0;
+
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer(vm, bi0);
+
+ pwcwi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
+ pwcw0 = pw_cw_dpo_get(pwcwi0);
+ next0 = pwcw0->pwcw_parent.dpoi_next_node;
+ vnet_buffer(b0)->ip.adj_index[VLIB_TX] = pwcw0->pwcw_parent.dpoi_index;
+
+ if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ pw_cw_trace_t *tr = vlib_add_trace(vm, node, b0, sizeof(*tr));
+
+ tr->cw = *((pw_cw_t*) vlib_buffer_get_current(b0));
+ }
+
+ vlib_buffer_advance (b0, sizeof(pw_cw_t));
+
+ vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+ vlib_put_next_frame(vm, node, next_index, n_left_to_next);
+ }
+ return from_frame->n_vectors;
+}
+
+static u8 *
+format_pw_cw_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED(vlib_main_t * vm) = va_arg(*args, vlib_main_t *);
+ CLIB_UNUSED(vlib_node_t * node) = va_arg(*args, vlib_node_t *);
+ CLIB_UNUSED(pw_cw_trace_t * t);
+
+ t = va_arg(*args, pw_cw_trace_t *);
+
+ s = format(s, "cw:0x%x", t->cw);
+
+ return (s);
+}
+
+VLIB_NODE_FN (pw_cw_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return (pw_cw_pop_inline(vm, node, frame));
+}
+
+VLIB_REGISTER_NODE(pw_cw_node) = {
+ .name = "pw-cw-pop",
+ .vector_size = sizeof(u32),
+ .format_trace = format_pw_cw_trace,
+};
+
+#ifndef CLIB_MARCH_VARIANT
+static void
+pw_cw_dpo_mem_show (void)
+{
+ fib_show_memory_usage("PW-CW",
+ pool_elts(pw_cw_dpo_pool),
+ pool_len(pw_cw_dpo_pool),
+ sizeof(pw_cw_dpo_t));
+}
+
+const static dpo_vft_t pwcw_vft = {
+ .dv_lock = pw_cw_dpo_lock,
+ .dv_unlock = pw_cw_dpo_unlock,
+ .dv_format = format_pw_cw_dpo,
+ .dv_mem_show = pw_cw_dpo_mem_show,
+};
+
+const static char* const pw_cw_proto_nodes[] =
+{
+ "pw-cw-pop",
+ NULL,
+};
+
+const static char* const * const pw_cw_nodes[DPO_PROTO_NUM] =
+{
+ [DPO_PROTO_IP4] = pw_cw_proto_nodes,
+ [DPO_PROTO_IP6] = pw_cw_proto_nodes,
+ [DPO_PROTO_MPLS] = pw_cw_proto_nodes,
+ [DPO_PROTO_ETHERNET] = pw_cw_proto_nodes,
+};
+
+void
+pw_cw_dpo_module_init (void)
+{
+ dpo_register(DPO_PW_CW, &pwcw_vft, pw_cw_nodes);
+}
+
+#endif /* CLIB_MARCH_VARIANT */
diff --git a/src/vnet/dpo/pw_cw.h b/src/vnet/dpo/pw_cw.h
new file mode 100644
index 00000000000..96f8c72c9d0
--- /dev/null
+++ b/src/vnet/dpo/pw_cw.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __PW_CW_DPO_H__
+#define __PW_CW_DPO_H__
+
+#include <vnet/vnet.h>
+#include <vnet/mpls/packet.h>
+#include <vnet/dpo/dpo.h>
+
+/**
+ * A Psuedo Wire Control Word is 4 bytes
+ */
+typedef u32 pw_cw_t;
+
+/**
+ * A representation of a Psuedo Wire Control Word pop DPO
+ */
+typedef struct pw_cw_dpo_t
+{
+ /**
+ * Next DPO in the graph
+ */
+ dpo_id_t pwcw_parent;
+
+ /**
+ * Number of locks/users of the label
+ */
+ u16 pwcw_locks;
+} pw_cw_dpo_t;
+
+/**
+ * @brief Assert that the MPLS label object is less than a cache line in size.
+ * Should this get any bigger then we will need to reconsider how many labels
+ * can be pushed in one object.
+ */
+STATIC_ASSERT_SIZEOF(pw_cw_dpo_t, 2 * sizeof(u64));
+
+/* #define STATIC_ASSERT_ALIGNOF(d, s) \ */
+/* STATIC_ASSERT (alignof (d) == sizeof(s), "Align of " #d " must be " # s " bytes") */
+
+/* STATIC_ASSERT_AIGNOF(pw_cw_dpo_t, u64); */
+
+/**
+ * @brief Create an PW CW pop
+ *
+ * @param parent The parent of the created MPLS label object
+ * @param dpo The PW CW DPO created
+ */
+extern void pw_cw_dpo_create(const dpo_id_t *paremt,
+ dpo_id_t *dpo);
+
+extern u8* format_pw_cw_dpo(u8 *s, va_list *args);
+
+/*
+ * Encapsulation violation for fast data-path access
+ */
+extern pw_cw_dpo_t *pw_cw_dpo_pool;
+
+static inline pw_cw_dpo_t *
+pw_cw_dpo_get (index_t index)
+{
+ return (pool_elt_at_index(pw_cw_dpo_pool, index));
+}
+
+extern void pw_cw_dpo_module_init(void);
+
+#endif
diff --git a/src/vnet/fib/fib_api.c b/src/vnet/fib/fib_api.c
index e776235bc00..e020b26fd6e 100644
--- a/src/vnet/fib/fib_api.c
+++ b/src/vnet/fib/fib_api.c
@@ -186,6 +186,8 @@ fib_api_path_decode (vl_api_fib_path_t *in,
out->frp_flags |= FIB_ROUTE_PATH_RESOLVE_VIA_HOST;
if (in->flags & FIB_API_PATH_FLAG_RESOLVE_VIA_ATTACHED)
out->frp_flags |= FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED;
+ if (in->flags & FIB_API_PATH_FLAG_POP_PW_CW)
+ out->frp_flags |= FIB_ROUTE_PATH_POP_PW_CW;
switch (in->type)
{
diff --git a/src/vnet/fib/fib_path.c b/src/vnet/fib/fib_path.c
index eebba1b1548..ed7bc0262fc 100644
--- a/src/vnet/fib/fib_path.c
+++ b/src/vnet/fib/fib_path.c
@@ -26,6 +26,7 @@
#include <vnet/dpo/dvr_dpo.h>
#include <vnet/dpo/ip_null_dpo.h>
#include <vnet/dpo/classify_dpo.h>
+#include <vnet/dpo/pw_cw.h>
#include <vnet/adj/adj.h>
#include <vnet/adj/adj_mcast.h>
@@ -1233,6 +1234,8 @@ fib_path_route_flags_to_cfg_flags (const fib_route_path_t *rpath)
{
fib_path_cfg_flags_t cfg_flags = FIB_PATH_CFG_FLAG_NONE;
+ if (rpath->frp_flags & FIB_ROUTE_PATH_POP_PW_CW)
+ cfg_flags |= FIB_PATH_CFG_FLAG_POP_PW_CW;
if (rpath->frp_flags & FIB_ROUTE_PATH_RESOLVE_VIA_HOST)
cfg_flags |= FIB_PATH_CFG_FLAG_RESOLVE_HOST;
if (rpath->frp_flags & FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED)
@@ -2381,6 +2384,16 @@ fib_path_stack_mpls_disp (fib_node_index_t path_index,
case FIB_PATH_TYPE_DVR:
break;
}
+
+ if (path->fp_cfg_flags & FIB_PATH_CFG_FLAG_POP_PW_CW)
+ {
+ dpo_id_t tmp = DPO_INVALID;
+
+ dpo_copy(&tmp, dpo);
+
+ pw_cw_dpo_create(&tmp, dpo);
+ dpo_reset(&tmp);
+ }
}
void
diff --git a/src/vnet/fib/fib_path.h b/src/vnet/fib/fib_path.h
index 50aca9e1cf5..76f876d8f10 100644
--- a/src/vnet/fib/fib_path.h
+++ b/src/vnet/fib/fib_path.h
@@ -96,9 +96,13 @@ typedef enum fib_path_cfg_attribute_t_ {
*/
FIB_PATH_CFG_ATTRIBUTE_DEAG_SRC,
/**
+ * The path pops a Psuedo Wire Control Word
+ */
+ FIB_PATH_CFG_ATTRIBUTE_POP_PW_CW,
+ /**
* Marker. Add new types before this one, then update it.
*/
- FIB_PATH_CFG_ATTRIBUTE_LAST = FIB_PATH_CFG_ATTRIBUTE_DEAG_SRC,
+ FIB_PATH_CFG_ATTRIBUTE_LAST = FIB_PATH_CFG_ATTRIBUTE_POP_PW_CW,
} __attribute__ ((packed)) fib_path_cfg_attribute_t;
/**
@@ -119,6 +123,7 @@ typedef enum fib_path_cfg_attribute_t_ {
[FIB_PATH_CFG_ATTRIBUTE_INTF_RX] = "interface-rx", \
[FIB_PATH_CFG_ATTRIBUTE_RPF_ID] = "rpf-id", \
[FIB_PATH_CFG_ATTRIBUTE_DEAG_SRC] = "deag-src", \
+ [FIB_PATH_CFG_ATTRIBUTE_POP_PW_CW] = "pop-pw-cw", \
}
#define FOR_EACH_FIB_PATH_CFG_ATTRIBUTE(_item) \
@@ -143,6 +148,7 @@ typedef enum fib_path_cfg_flags_t_ {
FIB_PATH_CFG_FLAG_INTF_RX = (1 << FIB_PATH_CFG_ATTRIBUTE_INTF_RX),
FIB_PATH_CFG_FLAG_RPF_ID = (1 << FIB_PATH_CFG_ATTRIBUTE_RPF_ID),
FIB_PATH_CFG_FLAG_DEAG_SRC = (1 << FIB_PATH_CFG_ATTRIBUTE_DEAG_SRC),
+ FIB_PATH_CFG_FLAG_POP_PW_CW = (1 << FIB_PATH_CFG_ATTRIBUTE_POP_PW_CW),
} __attribute__ ((packed)) fib_path_cfg_flags_t;
typedef enum fib_path_format_flags_t_
diff --git a/src/vnet/fib/fib_types.api b/src/vnet/fib/fib_types.api
index 9073192c3c4..4a5cea79064 100644
--- a/src/vnet/fib/fib_types.api
+++ b/src/vnet/fib/fib_types.api
@@ -44,9 +44,11 @@ enum fib_path_flags
{
FIB_API_PATH_FLAG_NONE = 0,
/* the path must resolve via an attached route */
- FIB_API_PATH_FLAG_RESOLVE_VIA_ATTACHED,
+ FIB_API_PATH_FLAG_RESOLVE_VIA_ATTACHED = 1,
/* the path must resolve via a host route */
- FIB_API_PATH_FLAG_RESOLVE_VIA_HOST,
+ FIB_API_PATH_FLAG_RESOLVE_VIA_HOST = 2,
+ /* pop a Pseudo Wire Control Word as well */
+ FIB_API_PATH_FLAG_POP_PW_CW = 4,
};
/* \brief A description of the 'next-hop' for a path
diff --git a/src/vnet/fib/fib_types.c b/src/vnet/fib/fib_types.c
index 4b1280f6fa8..386aece8753 100644
--- a/src/vnet/fib/fib_types.c
+++ b/src/vnet/fib/fib_types.c
@@ -537,6 +537,10 @@ unformat_fib_route_path (unformat_input_t * input, va_list * args)
{
rpath->frp_flags |= FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED;
}
+ else if (unformat (input, "pop-pw-cw"))
+ {
+ rpath->frp_flags |= FIB_ROUTE_PATH_POP_PW_CW;
+ }
else if (unformat (input,
"ip4-lookup-in-table %d",
&rpath->frp_fib_index))
diff --git a/src/vnet/fib/fib_types.h b/src/vnet/fib/fib_types.h
index 77b133fa9db..980fe3d1d0a 100644
--- a/src/vnet/fib/fib_types.h
+++ b/src/vnet/fib/fib_types.h
@@ -383,6 +383,11 @@ typedef enum fib_route_path_flags_t_
FIB_ROUTE_PATH_ICMP_UNREACH = (1 << 15),
FIB_ROUTE_PATH_ICMP_PROHIBIT = (1 << 16),
FIB_ROUTE_PATH_CLASSIFY = (1 << 17),
+
+ /**
+ * Pop a Psuedo Wire Control Word
+ */
+ FIB_ROUTE_PATH_POP_PW_CW = (1 << 18),
} fib_route_path_flags_t;
/**