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-rw-r--r--src/vnet/adj/adj.c9
-rw-r--r--src/vnet/adj/adj.h84
-rw-r--r--src/vnet/adj/adj_delegate.c14
-rw-r--r--src/vnet/adj/adj_delegate.h7
-rw-r--r--src/vnet/adj/adj_dp.h66
-rw-r--r--src/vnet/adj/adj_internal.h3
-rw-r--r--src/vnet/adj/adj_l2.c44
-rw-r--r--src/vnet/adj/adj_midchain.c546
-rw-r--r--src/vnet/adj/adj_midchain.h23
-rw-r--r--src/vnet/adj/adj_nbr.c11
-rw-r--r--src/vnet/adj/rewrite.c2
-rw-r--r--src/vnet/adj/rewrite.h19
12 files changed, 483 insertions, 345 deletions
diff --git a/src/vnet/adj/adj.c b/src/vnet/adj/adj.c
index c601e6bd19d..2fb77fe78d3 100644
--- a/src/vnet/adj/adj.c
+++ b/src/vnet/adj/adj.c
@@ -79,6 +79,7 @@ adj_alloc (fib_protocol_t proto)
adj->ia_nh_proto = proto;
adj->ia_flags = 0;
+ adj->ia_cfg_index = 0;
adj->rewrite_header.sw_if_index = ~0;
adj->rewrite_header.flags = 0;
adj->lookup_next_index = 0;
@@ -399,10 +400,18 @@ adj_feature_update_walk_cb (adj_index_t ai,
((ctx->arc == mpls_main.output_feature_arc_index) &&
(VNET_LINK_MPLS == adj->ia_link)))
{
+ vnet_feature_main_t *fm = &feature_main;
+ vnet_feature_config_main_t *cm;
+
+ cm = &fm->feature_config_mains[ctx->arc];
+
if (ctx->enable)
adj->rewrite_header.flags |= VNET_REWRITE_HAS_FEATURES;
else
adj->rewrite_header.flags &= ~VNET_REWRITE_HAS_FEATURES;
+
+ adj->ia_cfg_index = vec_elt (cm->config_index_by_sw_if_index,
+ adj->rewrite_header.sw_if_index);
}
return (ADJ_WALK_RC_CONTINUE);
}
diff --git a/src/vnet/adj/adj.h b/src/vnet/adj/adj.h
index e22e7ecd58a..a53122711a8 100644
--- a/src/vnet/adj/adj.h
+++ b/src/vnet/adj/adj.h
@@ -181,6 +181,10 @@ typedef enum adj_attr_t_
* If the midchain were to stack on its FIB entry a loop would form.
*/
ADJ_ATTR_MIDCHAIN_LOOPED,
+ /**
+ * the fixup function is standard IP4o4 header
+ */
+ ADJ_ATTR_MIDCHAIN_FIXUP_IP4O4_HDR,
} adj_attr_t;
#define ADJ_ATTR_NAMES { \
@@ -188,11 +192,12 @@ typedef enum adj_attr_t_
[ADJ_ATTR_MIDCHAIN_NO_COUNT] = "midchain-no-count", \
[ADJ_ATTR_MIDCHAIN_IP_STACK] = "midchain-ip-stack", \
[ADJ_ATTR_MIDCHAIN_LOOPED] = "midchain-looped", \
+ [ADJ_ATTR_MIDCHAIN_FIXUP_IP4O4_HDR] = "midchain-ip4o4-hdr-fixup", \
}
-#define FOR_EACH_ADJ_ATTR(_attr) \
- for (_attr = ADJ_ATTR_SYNC_WALK_ACTIVE; \
- _attr <= ADJ_ATTR_MIDCHAIN_LOOPED; \
+#define FOR_EACH_ADJ_ATTR(_attr) \
+ for (_attr = ADJ_ATTR_SYNC_WALK_ACTIVE; \
+ _attr <= ADJ_ATTR_MIDCHAIN_FIXUP_IP4O4_HDR; \
_attr++)
/**
@@ -205,6 +210,7 @@ typedef enum adj_flags_t_
ADJ_FLAG_MIDCHAIN_NO_COUNT = (1 << ADJ_ATTR_MIDCHAIN_NO_COUNT),
ADJ_FLAG_MIDCHAIN_IP_STACK = (1 << ADJ_ATTR_MIDCHAIN_IP_STACK),
ADJ_FLAG_MIDCHAIN_LOOPED = (1 << ADJ_ATTR_MIDCHAIN_LOOPED),
+ ADJ_FLAG_MIDCHAIN_FIXUP_IP4O4_HDR = (1 << ADJ_ATTR_MIDCHAIN_FIXUP_IP4O4_HDR),
} __attribute__ ((packed)) adj_flags_t;
/**
@@ -227,32 +233,10 @@ typedef struct ip_adjacency_t_
* has 8 byte alignment requirements.
*/
fib_node_t ia_node;
-
- /**
- * Next hop after ip4-lookup.
- * This is not accessed in the rewrite nodes.
- * 1-bytes
- */
- ip_lookup_next_t lookup_next_index;
-
- /**
- * link/ether-type
- * 1 bytes
- */
- vnet_link_t ia_link;
-
/**
- * The protocol of the neighbor/peer. i.e. the protocol with
- * which to interpret the 'next-hop' attributes of the sub-types.
- * 1-bytes
+ * feature [arc] config index
*/
- fib_protocol_t ia_nh_proto;
-
- /**
- * Flags on the adjacency
- * 1-bytes
- */
- adj_flags_t ia_flags;
+ u32 ia_cfg_index;
union
{
@@ -298,6 +282,10 @@ typedef struct ip_adjacency_t_
* loop detection.
*/
fib_node_index_t fei;
+
+ /** spare space */
+ u8 __ia_midchain_pad[4];
+
} midchain;
/**
* IP_LOOKUP_NEXT_GLEAN
@@ -315,12 +303,14 @@ typedef struct ip_adjacency_t_
CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
- /* Rewrite in second/third cache lines */
+ /** Rewrite in second and third cache lines */
VNET_DECLARE_REWRITE;
/**
* more control plane members that do not fit on the first cacheline
*/
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline3);
+
/**
* A sorted vector of delegates
*/
@@ -330,6 +320,37 @@ typedef struct ip_adjacency_t_
* The VLIB node in which this adj is used to forward packets
*/
u32 ia_node_index;
+
+ /**
+ * Next hop after ip4-lookup.
+ * This is not accessed in the rewrite nodes.
+ * 1-bytes
+ */
+ ip_lookup_next_t lookup_next_index;
+
+ /**
+ * link/ether-type
+ * 1 bytes
+ */
+ vnet_link_t ia_link;
+
+ /**
+ * The protocol of the neighbor/peer. i.e. the protocol with
+ * which to interpret the 'next-hop' attributes of the sub-types.
+ * 1-bytes
+ */
+ fib_protocol_t ia_nh_proto;
+
+ /**
+ * Flags on the adjacency
+ * 1-bytes
+ */
+ adj_flags_t ia_flags;
+
+ /**
+ * Free space on the fourth cacheline (not used in the DP)
+ */
+ u8 __ia_pad[48];
} ip_adjacency_t;
STATIC_ASSERT ((STRUCT_OFFSET_OF (ip_adjacency_t, cacheline0) == 0),
@@ -337,6 +358,13 @@ STATIC_ASSERT ((STRUCT_OFFSET_OF (ip_adjacency_t, cacheline0) == 0),
STATIC_ASSERT ((STRUCT_OFFSET_OF (ip_adjacency_t, cacheline1) ==
CLIB_CACHE_LINE_BYTES),
"IP adjacency cacheline 1 is more than one cacheline size offset");
+#if defined __x86_64__
+STATIC_ASSERT ((STRUCT_OFFSET_OF (ip_adjacency_t, cacheline3) ==
+ 3 * CLIB_CACHE_LINE_BYTES),
+ "IP adjacency cacheline 3 is more than one cacheline size offset");
+/* An adj fits into 4 cachelines on your average machine */
+STATIC_ASSERT_SIZEOF (ip_adjacency_t, 4 * 64);
+#endif
/**
* @brief
diff --git a/src/vnet/adj/adj_delegate.c b/src/vnet/adj/adj_delegate.c
index 87a83fb4239..8f590461b20 100644
--- a/src/vnet/adj/adj_delegate.c
+++ b/src/vnet/adj/adj_delegate.c
@@ -125,6 +125,20 @@ adj_delegate_add (ip_adjacency_t *adj,
}
void
+adj_delegate_adj_modified (ip_adjacency_t *adj)
+{
+ adj_delegate_t *aed;
+
+ vec_foreach(aed, adj->ia_delegates)
+ {
+ if (ad_vfts[aed->ad_type].adv_adj_modified)
+ {
+ ad_vfts[aed->ad_type].adv_adj_modified(aed);
+ }
+ }
+}
+
+void
adj_delegate_adj_deleted (ip_adjacency_t *adj)
{
adj_delegate_t *aed;
diff --git a/src/vnet/adj/adj_delegate.h b/src/vnet/adj/adj_delegate.h
index d49c6661c19..c83a00cd271 100644
--- a/src/vnet/adj/adj_delegate.h
+++ b/src/vnet/adj/adj_delegate.h
@@ -83,11 +83,18 @@ typedef u8 * (*adj_delegate_format_t)(const adj_delegate_t *aed, u8 *s);
typedef void (*adj_delegate_adj_created_t)(adj_index_t ai);
/**
+ * Indication that the adjacency has been modified.
+ * the delegate.
+ */
+typedef void (*adj_delegate_adj_modified_t)(adj_delegate_t *aed);
+
+/**
* An ADJ delegate virtual function table
*/
typedef struct adj_delegate_vft_t_ {
adj_delegate_format_t adv_format;
adj_delegate_adj_deleted_t adv_adj_deleted;
+ adj_delegate_adj_modified_t adv_adj_modified;
adj_delegate_adj_created_t adv_adj_created;
} adj_delegate_vft_t;
diff --git a/src/vnet/adj/adj_dp.h b/src/vnet/adj/adj_dp.h
new file mode 100644
index 00000000000..27c0581fcfb
--- /dev/null
+++ b/src/vnet/adj/adj_dp.h
@@ -0,0 +1,66 @@
+/*
+ * 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.
+ */
+
+#ifndef __ADJ_DP_H__
+#define __ADJ_DP_H__
+
+#include <vnet/adj/adj.h>
+#include <vnet/tunnel/tunnel_dp.h>
+
+static_always_inline void
+adj_midchain_ipip44_fixup (vlib_main_t * vm,
+ const ip_adjacency_t * adj,
+ vlib_buffer_t * b)
+{
+ tunnel_encap_decap_flags_t flags;
+ ip4_header_t *ip4;
+
+ flags = pointer_to_uword (adj->sub_type.midchain.fixup_data);
+
+ ip4 = vlib_buffer_get_current (b);
+ ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b));
+
+ if (PREDICT_TRUE(TUNNEL_ENCAP_DECAP_FLAG_NONE == flags))
+ {
+ ip_csum_t sum;
+ u16 old,new;
+
+ old = 0;
+ new = ip4->length;
+
+ sum = ip4->checksum;
+ sum = ip_csum_update (sum, old, new, ip4_header_t, length);
+ ip4->checksum = ip_csum_fold (sum);
+ }
+ else
+ {
+ tunnel_encap_fixup_4o4 (flags, ip4 + 1, ip4);
+ ip4->checksum = ip4_header_checksum (ip4);
+ }
+}
+
+static_always_inline void
+adj_midchain_fixup (vlib_main_t *vm,
+ const ip_adjacency_t *adj,
+ vlib_buffer_t * b)
+{
+ if (PREDICT_TRUE(adj->rewrite_header.flags & VNET_REWRITE_FIXUP_IP4_O_4))
+ adj_midchain_ipip44_fixup (vm, adj, b);
+ else if (adj->sub_type.midchain.fixup_func)
+ adj->sub_type.midchain.fixup_func
+ (vm, adj, b, adj->sub_type.midchain.fixup_data);
+}
+
+#endif
diff --git a/src/vnet/adj/adj_internal.h b/src/vnet/adj/adj_internal.h
index c4dda51324c..11214932a3a 100644
--- a/src/vnet/adj/adj_internal.h
+++ b/src/vnet/adj/adj_internal.h
@@ -53,7 +53,7 @@ adj_get_rewrite_node (vnet_link_t linkt)
case VNET_LINK_MPLS:
return (mpls_output_node.index);
case VNET_LINK_ETHERNET:
- return (adj_l2_rewrite_node.index);
+ return (adj_l2_rewrite_node.index);
case VNET_LINK_NSH:
return (adj_nsh_rewrite_node.index);
case VNET_LINK_ARP:
@@ -138,6 +138,7 @@ extern int adj_bfd_is_up (adj_index_t ai);
*/
extern void adj_delegate_adj_deleted(ip_adjacency_t *adj);
extern void adj_delegate_adj_created(ip_adjacency_t *adj);
+extern void adj_delegate_adj_modified(ip_adjacency_t *adj);
extern u8* adj_delegate_format(u8* s, ip_adjacency_t *adj);
#endif
diff --git a/src/vnet/adj/adj_l2.c b/src/vnet/adj/adj_l2.c
index a289158c7f3..5413eca6212 100644
--- a/src/vnet/adj/adj_l2.c
+++ b/src/vnet/adj/adj_l2.c
@@ -48,7 +48,8 @@ always_inline uword
adj_l2_rewrite_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame,
- int is_midchain)
+ int is_midchain,
+ int do_counters)
{
u32 * from = vlib_frame_vector_args (frame);
u32 n_left_from, n_left_to_next, * to_next, next_index;
@@ -67,7 +68,7 @@ adj_l2_rewrite_inline (vlib_main_t * vm,
ip_adjacency_t * adj0;
vlib_buffer_t * p0;
char *h0;
- u32 pi0, rw_len0, adj_index0, next0 = 0;
+ u32 pi0, rw_len0, len0, adj_index0, next0 = 0;
u32 tx_sw_if_index0;
pi0 = to_next[0] = from[0];
@@ -83,29 +84,30 @@ adj_l2_rewrite_inline (vlib_main_t * vm,
adj0 = adj_get (adj_index0);
- /* Guess we are only writing on simple Ethernet header. */
+ /* Guess we are writing on ip4 header. */
vnet_rewrite_one_header (adj0[0], h0,
- sizeof (ethernet_header_t));
+ //sizeof (gre_header_t) +
+ sizeof (ip4_header_t));
/* Update packet buffer attributes/set output interface. */
rw_len0 = adj0[0].rewrite_header.data_bytes;
vnet_buffer(p0)->ip.save_rewrite_length = rw_len0;
vnet_buffer(p0)->sw_if_index[VLIB_TX] = adj0->rewrite_header.sw_if_index;
+ len0 = vlib_buffer_length_in_chain (vm, p0);
/* since we are coming out of the L2 world, where the vlib_buffer
* union is used for other things, make sure it is clean for
* MPLS from now on.
*/
vnet_buffer(p0)->mpls.first = 0;
- vlib_increment_combined_counter(&adjacency_counters,
- thread_index,
- adj_index0,
- /* packet increment */ 0,
- /* byte increment */ rw_len0);
+ if (do_counters)
+ vlib_increment_combined_counter(&adjacency_counters,
+ thread_index,
+ adj_index0,
+ 0, len0);
/* Check MTU of outgoing interface. */
- if (PREDICT_TRUE((vlib_buffer_length_in_chain (vm, p0) <=
- adj0[0].rewrite_header.max_l3_packet_bytes)))
+ if (PREDICT_TRUE(len0 <= adj0[0].rewrite_header.max_l3_packet_bytes))
{
/* Don't adjust the buffer for ttl issue; icmp-error node wants
* to see the IP header */
@@ -126,7 +128,15 @@ adj_l2_rewrite_inline (vlib_main_t * vm,
* Follow the feature ARC. this will result eventually in
* the midchain-tx node
*/
- vnet_feature_arc_start(em->output_feature_arc_index, tx_sw_if_index0, &next0, p0);
+ if (PREDICT_FALSE (adj0->rewrite_header.flags &
+ VNET_REWRITE_HAS_FEATURES))
+ vnet_feature_arc_start_w_cfg_index (
+ em->output_feature_arc_index,
+ tx_sw_if_index0,
+ &next0, p0,
+ adj0->ia_cfg_index);
+ else
+ next0 = adj0[0].rewrite_header.next_index;
}
else
{
@@ -156,14 +166,20 @@ VLIB_NODE_FN (adj_l2_rewrite_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- return adj_l2_rewrite_inline (vm, node, frame, 0);
+ if (adj_are_counters_enabled ())
+ return adj_l2_rewrite_inline (vm, node, frame, 0, 1);
+ else
+ return adj_l2_rewrite_inline (vm, node, frame, 0, 0);
}
VLIB_NODE_FN (adj_l2_midchain_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- return adj_l2_rewrite_inline (vm, node, frame, 1);
+ if (adj_are_counters_enabled ())
+ return adj_l2_rewrite_inline (vm, node, frame, 1, 1);
+ else
+ return adj_l2_rewrite_inline (vm, node, frame, 1, 0);
}
VLIB_REGISTER_NODE (adj_l2_rewrite_node) = {
diff --git a/src/vnet/adj/adj_midchain.c b/src/vnet/adj/adj_midchain.c
index 88648fea0a9..4741ec9a953 100644
--- a/src/vnet/adj/adj_midchain.c
+++ b/src/vnet/adj/adj_midchain.c
@@ -25,14 +25,6 @@
#include <vnet/fib/fib_entry.h>
/**
- * The two midchain tx feature node indices
- */
-static u32 adj_midchain_tx_feature_node[VNET_LINK_NUM];
-static u32 adj_midchain_tx_no_count_feature_node[VNET_LINK_NUM];
-
-static u32 *adj_midchain_feat_count_per_sw_if_index[VNET_LINK_NUM];
-
-/**
* @brief Trace data for packets traversing the midchain tx node
*/
typedef struct adj_midchain_tx_trace_t_
@@ -49,203 +41,158 @@ adj_midchain_tx_inline (vlib_main_t * vm,
vlib_frame_t * frame,
int interface_count)
{
- u32 * from, * to_next, n_left_from, n_left_to_next;
- u32 next_index;
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
+ u16 nexts[VLIB_FRAME_SIZE], *next;
+ u32 * from, n_left, thread_index;
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnm->interface_main;
- u32 thread_index = vm->thread_index;
- /* Vector of buffer / pkt indices we're supposed to process */
+ thread_index = vm->thread_index;
+ n_left = frame->n_vectors;
from = vlib_frame_vector_args (frame);
- /* Number of buffers / pkts */
- n_left_from = frame->n_vectors;
+ vlib_get_buffers (vm, from, bufs, n_left);
- /* Speculatively send the first buffer to the last disposition we used */
- next_index = node->cached_next_index;
+ next = nexts;
+ b = bufs;
- while (n_left_from > 0)
+ while (n_left > 8)
{
- /* set up to enqueue to our disposition with index = next_index */
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ u32 adj_index0, adj_index1, adj_index2, adj_index3;
+ const ip_adjacency_t *adj0, *adj1, *adj2, *adj3;
+ const dpo_id_t *dpo0, *dpo1, *dpo2, *dpo3;
- while (n_left_from >= 8 && n_left_to_next > 4)
- {
- const ip_adjacency_t *adj0, *adj1, *adj2, *adj3;
- const dpo_id_t *dpo0, *dpo1, *dpo2, *dpo3;
- vlib_buffer_t * b0, *b1, *b2, *b3;
- u32 bi0, adj_index0, next0;
- u32 bi1, adj_index1, next1;
- u32 bi2, adj_index2, next2;
- u32 bi3, adj_index3, next3;
-
- /* Prefetch next iteration. */
- {
- vlib_buffer_t * p4, * p5;
- vlib_buffer_t * p6, * p7;
-
- p4 = vlib_get_buffer (vm, from[4]);
- p5 = vlib_get_buffer (vm, from[5]);
- p6 = vlib_get_buffer (vm, from[6]);
- p7 = vlib_get_buffer (vm, from[7]);
-
- vlib_prefetch_buffer_header (p4, LOAD);
- vlib_prefetch_buffer_header (p5, LOAD);
- vlib_prefetch_buffer_header (p6, LOAD);
- vlib_prefetch_buffer_header (p7, LOAD);
- }
-
- bi0 = from[0];
- to_next[0] = bi0;
- bi1 = from[1];
- to_next[1] = bi1;
- bi2 = from[2];
- to_next[2] = bi2;
- bi3 = from[3];
- to_next[3] = bi3;
-
- from += 4;
- to_next += 4;
- n_left_from -= 4;
- n_left_to_next -= 4;
-
- b0 = vlib_get_buffer(vm, bi0);
- b1 = vlib_get_buffer(vm, bi1);
- b2 = vlib_get_buffer(vm, bi2);
- b3 = vlib_get_buffer(vm, bi3);
-
- /* Follow the DPO on which the midchain is stacked */
- adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
- adj_index1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
- adj_index2 = vnet_buffer(b2)->ip.adj_index[VLIB_TX];
- adj_index3 = vnet_buffer(b3)->ip.adj_index[VLIB_TX];
-
- adj0 = adj_get(adj_index0);
- adj1 = adj_get(adj_index1);
- adj2 = adj_get(adj_index2);
- adj3 = adj_get(adj_index3);
-
- dpo0 = &adj0->sub_type.midchain.next_dpo;
- dpo1 = &adj1->sub_type.midchain.next_dpo;
- dpo2 = &adj2->sub_type.midchain.next_dpo;
- dpo3 = &adj3->sub_type.midchain.next_dpo;
-
- next0 = dpo0->dpoi_next_node;
- next1 = dpo1->dpoi_next_node;
- next2 = dpo2->dpoi_next_node;
- next3 = dpo3->dpoi_next_node;
-
- vnet_buffer(b1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
- vnet_buffer(b0)->ip.adj_index[VLIB_TX] = dpo0->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 (interface_count)
- {
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_TX,
- thread_index,
- adj0->rewrite_header.sw_if_index,
- 1,
- vlib_buffer_length_in_chain (vm, b0));
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_TX,
- thread_index,
- adj1->rewrite_header.sw_if_index,
- 1,
- vlib_buffer_length_in_chain (vm, b1));
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_TX,
- thread_index,
- adj2->rewrite_header.sw_if_index,
- 1,
- vlib_buffer_length_in_chain (vm, b2));
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_TX,
- thread_index,
- adj3->rewrite_header.sw_if_index,
- 1,
- vlib_buffer_length_in_chain (vm, b3));
- }
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
- b0, sizeof (*tr));
- tr->ai = adj_index0;
- }
- if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
- {
- adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
- b1, sizeof (*tr));
- tr->ai = adj_index1;
- }
- if (PREDICT_FALSE(b2->flags & VLIB_BUFFER_IS_TRACED))
- {
- adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
- b2, sizeof (*tr));
- tr->ai = adj_index2;
- }
- if (PREDICT_FALSE(b3->flags & VLIB_BUFFER_IS_TRACED))
- {
- adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
- b3, sizeof (*tr));
- tr->ai = adj_index3;
- }
-
- vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, bi1, bi2, bi3,
- next0, next1, next2, next3);
- }
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0, adj_index0, next0;
- const ip_adjacency_t * adj0;
- const dpo_id_t *dpo0;
- vlib_buffer_t * b0;
-
- 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);
-
- /* Follow the DPO on which the midchain is stacked */
- adj_index0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
- adj0 = adj_get(adj_index0);
- dpo0 = &adj0->sub_type.midchain.next_dpo;
- next0 = dpo0->dpoi_next_node;
- vnet_buffer(b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
-
- if (interface_count)
- {
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_TX,
- thread_index,
- adj0->rewrite_header.sw_if_index,
- 1,
- vlib_buffer_length_in_chain (vm, b0));
- }
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
- b0, sizeof (*tr));
- tr->ai = adj_index0;
- }
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, next0);
- }
+ /* Prefetch next iteration. */
+ {
+ vlib_prefetch_buffer_header (b[4], LOAD);
+ vlib_prefetch_buffer_header (b[5], LOAD);
+ vlib_prefetch_buffer_header (b[6], LOAD);
+ vlib_prefetch_buffer_header (b[7], LOAD);
+ }
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ /* Follow the DPO on which the midchain is stacked */
+ adj_index0 = vnet_buffer(b[0])->ip.adj_index[VLIB_TX];
+ adj_index1 = vnet_buffer(b[1])->ip.adj_index[VLIB_TX];
+ adj_index2 = vnet_buffer(b[2])->ip.adj_index[VLIB_TX];
+ adj_index3 = vnet_buffer(b[3])->ip.adj_index[VLIB_TX];
+
+ adj0 = adj_get(adj_index0);
+ adj1 = adj_get(adj_index1);
+ adj2 = adj_get(adj_index2);
+ adj3 = adj_get(adj_index3);
+
+ dpo0 = &adj0->sub_type.midchain.next_dpo;
+ dpo1 = &adj1->sub_type.midchain.next_dpo;
+ dpo2 = &adj2->sub_type.midchain.next_dpo;
+ dpo3 = &adj3->sub_type.midchain.next_dpo;
+
+ next[0] = dpo0->dpoi_next_node;
+ next[1] = dpo1->dpoi_next_node;
+ next[2] = dpo2->dpoi_next_node;
+ next[3] = dpo3->dpoi_next_node;
+
+ vnet_buffer(b[0])->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+ vnet_buffer(b[1])->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
+ vnet_buffer(b[2])->ip.adj_index[VLIB_TX] = dpo2->dpoi_index;
+ vnet_buffer(b[3])->ip.adj_index[VLIB_TX] = dpo3->dpoi_index;
+
+ if (interface_count)
+ {
+ vlib_increment_combined_counter (im->combined_sw_if_counters
+ + VNET_INTERFACE_COUNTER_TX,
+ thread_index,
+ adj0->rewrite_header.sw_if_index,
+ 1,
+ vlib_buffer_length_in_chain (vm, b[0]));
+ vlib_increment_combined_counter (im->combined_sw_if_counters
+ + VNET_INTERFACE_COUNTER_TX,
+ thread_index,
+ adj1->rewrite_header.sw_if_index,
+ 1,
+ vlib_buffer_length_in_chain (vm, b[1]));
+ vlib_increment_combined_counter (im->combined_sw_if_counters
+ + VNET_INTERFACE_COUNTER_TX,
+ thread_index,
+ adj2->rewrite_header.sw_if_index,
+ 1,
+ vlib_buffer_length_in_chain (vm, b[2]));
+ vlib_increment_combined_counter (im->combined_sw_if_counters
+ + VNET_INTERFACE_COUNTER_TX,
+ thread_index,
+ adj3->rewrite_header.sw_if_index,
+ 1,
+ vlib_buffer_length_in_chain (vm, b[3]));
+ }
+
+ if (PREDICT_FALSE(node->flags & VLIB_NODE_FLAG_TRACE))
+ {
+ if (PREDICT_FALSE(b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
+ b[0], sizeof (*tr));
+ tr->ai = adj_index0;
+ }
+ if (PREDICT_FALSE(b[1]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
+ b[1], sizeof (*tr));
+ tr->ai = adj_index1;
+ }
+ if (PREDICT_FALSE(b[2]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
+ b[2], sizeof (*tr));
+ tr->ai = adj_index2;
+ }
+ if (PREDICT_FALSE(b[3]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
+ b[3], sizeof (*tr));
+ tr->ai = adj_index3;
+ }
+ }
+ n_left -= 4;
+ b += 4;
+ next += 4;
}
+ while (n_left)
+ {
+ const ip_adjacency_t * adj0;
+ const dpo_id_t *dpo0;
+ u32 adj_index0;
+
+ /* Follow the DPO on which the midchain is stacked */
+ adj_index0 = vnet_buffer(b[0])->ip.adj_index[VLIB_TX];
+ adj0 = adj_get(adj_index0);
+ dpo0 = &adj0->sub_type.midchain.next_dpo;
+ next[0] = dpo0->dpoi_next_node;
+ vnet_buffer(b[0])->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
+
+ if (interface_count)
+ {
+ vlib_increment_combined_counter (im->combined_sw_if_counters
+ + VNET_INTERFACE_COUNTER_TX,
+ thread_index,
+ adj0->rewrite_header.sw_if_index,
+ 1,
+ vlib_buffer_length_in_chain (vm, b[0]));
+ }
+
+ if (PREDICT_FALSE(b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ adj_midchain_tx_trace_t *tr = vlib_add_trace (vm, node,
+ b[0], sizeof (*tr));
+ tr->ai = adj_index0;
+ }
+
+ n_left -= 1;
+ b += 1;
+ next += 1;
+ }
+
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
+
return frame->n_vectors;
}
@@ -271,7 +218,7 @@ adj_midchain_tx (vlib_main_t * vm,
return (adj_midchain_tx_inline(vm, node, frame, 1));
}
-VLIB_REGISTER_NODE (adj_midchain_tx_node, static) = {
+VLIB_REGISTER_NODE (adj_midchain_tx_node) = {
.function = adj_midchain_tx,
.name = "adj-midchain-tx",
.vector_size = sizeof (u32),
@@ -292,79 +239,44 @@ adj_midchain_tx_no_count (vlib_main_t * vm,
return (adj_midchain_tx_inline(vm, node, frame, 0));
}
-VLIB_REGISTER_NODE (adj_midchain_tx_no_count_node, static) = {
+VLIB_REGISTER_NODE (adj_midchain_tx_no_count_node) = {
.function = adj_midchain_tx_no_count,
.name = "adj-midchain-tx-no-count",
.vector_size = sizeof (u32),
.format_trace = format_adj_midchain_tx_trace,
-
- .n_next_nodes = 1,
- .next_nodes = {
- [0] = "error-drop",
- },
+ .sibling_of = "adj-midchain-tx",
};
-VNET_FEATURE_INIT (adj_midchain_tx_ip4, static) = {
- .arc_name = "ip4-output",
- .node_name = "adj-midchain-tx",
- .runs_before = VNET_FEATURES ("interface-output"),
- .feature_index_ptr = &adj_midchain_tx_feature_node[VNET_LINK_IP4],
-};
-VNET_FEATURE_INIT (adj_midchain_tx_no_count_ip4, static) = {
- .arc_name = "ip4-output",
- .node_name = "adj-midchain-tx-no-count",
- .runs_before = VNET_FEATURES ("interface-output"),
- .feature_index_ptr = &adj_midchain_tx_no_count_feature_node[VNET_LINK_IP4],
-};
-VNET_FEATURE_INIT (adj_midchain_tx_ip6, static) = {
- .arc_name = "ip6-output",
- .node_name = "adj-midchain-tx",
- .runs_before = VNET_FEATURES ("interface-output"),
- .feature_index_ptr = &adj_midchain_tx_feature_node[VNET_LINK_IP6],
-};
-VNET_FEATURE_INIT (adj_midchain_tx_no_count_ip6, static) = {
- .arc_name = "ip6-output",
- .node_name = "adj-midchain-tx-no-count",
- .runs_before = VNET_FEATURES ("interface-output"),
- .feature_index_ptr = &adj_midchain_tx_no_count_feature_node[VNET_LINK_IP6],
-};
-VNET_FEATURE_INIT (adj_midchain_tx_mpls, static) = {
- .arc_name = "mpls-output",
- .node_name = "adj-midchain-tx",
- .runs_before = VNET_FEATURES ("interface-output"),
- .feature_index_ptr = &adj_midchain_tx_feature_node[VNET_LINK_MPLS],
-};
-VNET_FEATURE_INIT (adj_midchain_tx_no_count_mpls, static) = {
- .arc_name = "mpls-output",
- .node_name = "adj-midchain-tx-no-count",
- .runs_before = VNET_FEATURES ("interface-output"),
- .feature_index_ptr = &adj_midchain_tx_no_count_feature_node[VNET_LINK_MPLS],
-};
-VNET_FEATURE_INIT (adj_midchain_tx_ethernet, static) = {
- .arc_name = "ethernet-output",
- .node_name = "adj-midchain-tx",
- .runs_before = VNET_FEATURES ("error-drop"),
- .feature_index_ptr = &adj_midchain_tx_feature_node[VNET_LINK_ETHERNET],
-};
-VNET_FEATURE_INIT (adj_midchain_tx_no_count_ethernet, static) = {
- .arc_name = "ethernet-output",
- .node_name = "adj-midchain-tx-no-count",
- .runs_before = VNET_FEATURES ("error-drop"),
- .feature_index_ptr = &adj_midchain_tx_no_count_feature_node[VNET_LINK_ETHERNET],
-};
-VNET_FEATURE_INIT (adj_midchain_tx_nsh, static) = {
- .arc_name = "nsh-output",
- .node_name = "adj-midchain-tx",
- .runs_before = VNET_FEATURES ("error-drop"),
- .feature_index_ptr = &adj_midchain_tx_feature_node[VNET_LINK_NSH],
-};
-VNET_FEATURE_INIT (adj_midchain_tx_no_count_nsh, static) = {
- .arc_name = "nsh-output",
- .node_name = "adj-midchain-tx-no-count",
- .runs_before = VNET_FEATURES ("error-drop"),
- .feature_index_ptr = &adj_midchain_tx_no_count_feature_node[VNET_LINK_NSH],
-};
+#ifndef CLIB_MARCH_VARIANT
+
+u8
+adj_is_midchain (adj_index_t ai)
+{
+ ip_adjacency_t *adj;
+
+ adj = adj_get(ai);
+
+ switch (adj->lookup_next_index)
+ {
+ case IP_LOOKUP_NEXT_MIDCHAIN:
+ case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
+ return (1);
+ case IP_LOOKUP_NEXT_ARP:
+ case IP_LOOKUP_NEXT_GLEAN:
+ case IP_LOOKUP_NEXT_BCAST:
+ case IP_LOOKUP_NEXT_MCAST:
+ case IP_LOOKUP_NEXT_DROP:
+ case IP_LOOKUP_NEXT_PUNT:
+ case IP_LOOKUP_NEXT_LOCAL:
+ case IP_LOOKUP_NEXT_REWRITE:
+ case IP_LOOKUP_NEXT_ICMP_ERROR:
+ case IP_LOOKUP_N_NEXT:
+ return (0);
+ }
+
+ return (0);
+}
static inline u32
adj_get_midchain_node (vnet_link_t link)
@@ -436,17 +348,6 @@ adj_nbr_midchain_get_tx_node (ip_adjacency_t *adj)
adj_midchain_tx_node.index);
}
-static u32
-adj_nbr_midchain_get_feature_node (ip_adjacency_t *adj)
-{
- if (adj->ia_flags & ADJ_FLAG_MIDCHAIN_NO_COUNT)
- {
- return (adj_midchain_tx_no_count_feature_node[adj->ia_link]);
- }
-
- return (adj_midchain_tx_feature_node[adj->ia_link]);
-}
-
/**
* adj_midchain_setup
*
@@ -455,20 +356,17 @@ adj_nbr_midchain_get_feature_node (ip_adjacency_t *adj)
void
adj_midchain_teardown (ip_adjacency_t *adj)
{
- u32 feature_index;
- u8 arc_index;
+ vlib_main_t *vm = vlib_get_main();
dpo_reset(&adj->sub_type.midchain.next_dpo);
- arc_index = adj_midchain_get_feature_arc_index_for_link_type (adj);
- feature_index = adj_nbr_midchain_get_feature_node(adj);
-
- if (0 == --adj_midchain_feat_count_per_sw_if_index[adj->ia_link][adj->rewrite_header.sw_if_index])
- {
- vnet_feature_enable_disable_with_index (arc_index, feature_index,
- adj->rewrite_header.sw_if_index,
- 0, 0, 0);
- }
+ vlib_worker_thread_barrier_sync(vm);
+ vnet_feature_modify_end_node(
+ adj_midchain_get_feature_arc_index_for_link_type (adj),
+ adj->rewrite_header.sw_if_index,
+ vlib_get_node_by_name (vlib_get_main(),
+ (u8*) "interface-output")->index);
+ vlib_worker_thread_barrier_release(vm);
}
/**
@@ -482,9 +380,9 @@ adj_midchain_setup (adj_index_t adj_index,
const void *data,
adj_flags_t flags)
{
- u32 feature_index, tx_node;
+ vlib_main_t *vm = vlib_get_main();
ip_adjacency_t *adj;
- u8 arc_index;
+ u32 tx_node;
ASSERT(ADJ_INDEX_INVALID != adj_index);
@@ -495,19 +393,23 @@ adj_midchain_setup (adj_index_t adj_index,
adj->sub_type.midchain.fei = FIB_NODE_INDEX_INVALID;
adj->ia_flags |= flags;
- arc_index = adj_midchain_get_feature_arc_index_for_link_type (adj);
- feature_index = adj_nbr_midchain_get_feature_node(adj);
- tx_node = adj_nbr_midchain_get_tx_node(adj);
-
- vec_validate (adj_midchain_feat_count_per_sw_if_index[adj->ia_link],
- adj->rewrite_header.sw_if_index);
-
- if (0 == adj_midchain_feat_count_per_sw_if_index[adj->ia_link][adj->rewrite_header.sw_if_index]++)
+ if (flags & ADJ_FLAG_MIDCHAIN_FIXUP_IP4O4_HDR)
{
- vnet_feature_enable_disable_with_index (arc_index, feature_index,
- adj->rewrite_header.sw_if_index,
- 1 /* enable */, 0, 0);
+ adj->rewrite_header.flags |= VNET_REWRITE_FIXUP_IP4_O_4;
}
+ else
+ {
+ adj->rewrite_header.flags &= ~VNET_REWRITE_FIXUP_IP4_O_4;
+ }
+
+ tx_node = adj_nbr_midchain_get_tx_node(adj);
+
+ vlib_worker_thread_barrier_sync(vm);
+ vnet_feature_modify_end_node(
+ adj_midchain_get_feature_arc_index_for_link_type (adj),
+ adj->rewrite_header.sw_if_index,
+ tx_node);
+ vlib_worker_thread_barrier_release(vm);
/*
* stack the midchain on the drop so it's ready to forward in the adj-midchain-tx.
@@ -561,6 +463,58 @@ adj_nbr_midchain_update_rewrite (adj_index_t adj_index,
rewrite);
}
+void
+adj_nbr_midchain_update_next_node (adj_index_t adj_index,
+ u32 next_node)
+{
+ ip_adjacency_t *adj;
+ vlib_main_t * vm;
+
+ ASSERT(ADJ_INDEX_INVALID != adj_index);
+
+ adj = adj_get(adj_index);
+ vm = vlib_get_main();
+
+ vlib_worker_thread_barrier_sync(vm);
+
+ adj->rewrite_header.next_index = vlib_node_add_next(vlib_get_main(),
+ adj->ia_node_index,
+ next_node);
+
+ vnet_feature_modify_end_node(
+ adj_midchain_get_feature_arc_index_for_link_type (adj),
+ adj->rewrite_header.sw_if_index,
+ next_node);
+
+ vlib_worker_thread_barrier_release(vm);
+}
+
+void
+adj_nbr_midchain_reset_next_node(adj_index_t adj_index)
+{
+ ip_adjacency_t *adj;
+ vlib_main_t * vm;
+
+ ASSERT(ADJ_INDEX_INVALID != adj_index);
+
+ adj = adj_get(adj_index);
+ vm = vlib_get_main();
+
+ vlib_worker_thread_barrier_sync(vm);
+
+ adj->rewrite_header.next_index =
+ vlib_node_add_next(vlib_get_main(),
+ adj->ia_node_index,
+ adj_nbr_midchain_get_tx_node(adj));
+
+ vnet_feature_modify_end_node(
+ adj_midchain_get_feature_arc_index_for_link_type (adj),
+ adj->rewrite_header.sw_if_index,
+ adj_nbr_midchain_get_tx_node(adj));
+
+ vlib_worker_thread_barrier_release(vm);
+}
+
/**
* adj_nbr_midchain_unstack
*
@@ -810,3 +764,5 @@ adj_midchain_module_init (void)
{
dpo_register(DPO_ADJACENCY_MIDCHAIN, &adj_midchain_dpo_vft, midchain_nodes);
}
+
+#endif
diff --git a/src/vnet/adj/adj_midchain.h b/src/vnet/adj/adj_midchain.h
index 1f5deaecd95..5fb0ee8efb3 100644
--- a/src/vnet/adj/adj_midchain.h
+++ b/src/vnet/adj/adj_midchain.h
@@ -52,6 +52,27 @@ extern void adj_nbr_midchain_update_rewrite(adj_index_t adj_index,
/**
* @brief
+ * Return the adjacency's next node to its default value
+ *
+ * @param adj_index
+ * The index of the neighbour adjacency.
+ */
+extern void adj_nbr_midchain_reset_next_node(adj_index_t adj_index);
+
+/**
+ * @brief
+ * Update the VLIB node to which packets are sent post processing
+ *
+ * @param adj_index
+ * The index of the neighbour adjacency.
+ *
+ * @param node node-index to send to
+ */
+extern void adj_nbr_midchain_update_next_node(adj_index_t adj_index,
+ u32 node_index);
+
+/**
+ * @brief
* [re]stack a midchain. 'Stacking' is the act of forming parent-child
* relationships in the data-plane graph. Do NOT use this function to
* stack on a DPO type that might form a loop.
@@ -139,4 +160,6 @@ extern void adj_midchain_delegate_restack(adj_index_t ai);
*/
extern void adj_midchain_delegate_unstack(adj_index_t ai);
+extern u8 adj_is_midchain (adj_index_t ai);
+
#endif
diff --git a/src/vnet/adj/adj_nbr.c b/src/vnet/adj/adj_nbr.c
index 7acdccc72b0..8604bf73dd6 100644
--- a/src/vnet/adj/adj_nbr.c
+++ b/src/vnet/adj/adj_nbr.c
@@ -168,9 +168,16 @@ adj_nbr_evaluate_feature (adj_index_t ai)
{
feature_count = fm->feature_count_by_sw_if_index[arc_index][sw_if_index];
if (feature_count > 0)
+ {
+ vnet_feature_config_main_t *cm;
+
adj->rewrite_header.flags |= VNET_REWRITE_HAS_FEATURES;
- }
+ cm = &fm->feature_config_mains[arc_index];
+ adj->ia_cfg_index = vec_elt (cm->config_index_by_sw_if_index,
+ sw_if_index);
+ }
+ }
return;
}
@@ -521,6 +528,7 @@ adj_nbr_update_rewrite_internal (ip_adjacency_t *adj,
walk_adj->ia_flags &= ~ADJ_FLAG_SYNC_WALK_ACTIVE;
}
+ adj_delegate_adj_modified(adj);
adj_unlock(ai);
adj_unlock(walk_ai);
}
@@ -578,7 +586,6 @@ adj_nbr_walk_cb (BVT(clib_bihash_kv) * kvp,
{
adj_walk_ctx_t *ctx = arg;
- // FIXME: can't stop early...
if (ADJ_WALK_RC_STOP == ctx->awc_cb(kvp->value, ctx->awc_ctx))
return (BIHASH_WALK_STOP);
return (BIHASH_WALK_CONTINUE);
diff --git a/src/vnet/adj/rewrite.c b/src/vnet/adj/rewrite.c
index c8508c4b37a..fc2df9af109 100644
--- a/src/vnet/adj/rewrite.c
+++ b/src/vnet/adj/rewrite.c
@@ -60,7 +60,7 @@ format_vnet_rewrite (u8 * s, va_list * args)
s = format (s, "DELETED:%d", rw->sw_if_index);
}
- s = format (s, " mtu:%d", rw->max_l3_packet_bytes);
+ s = format (s, " mtu:%d next:%d", rw->max_l3_packet_bytes, rw->next_index);
/* Format rewrite string. */
if (rw->data_bytes > 0)
diff --git a/src/vnet/adj/rewrite.h b/src/vnet/adj/rewrite.h
index 5c1d24ea890..c23edbe1f60 100644
--- a/src/vnet/adj/rewrite.h
+++ b/src/vnet/adj/rewrite.h
@@ -55,10 +55,15 @@ typedef enum vnet_rewrite_flags_t_
* This adjacency/interface has output features configured
*/
VNET_REWRITE_HAS_FEATURES = (1 << 0),
+
+ /**
+ * this adj performs IP4 over IP4 fixup
+ */
+ VNET_REWRITE_FIXUP_IP4_O_4 = (1 << 1),
} __attribute__ ((packed)) vnet_rewrite_flags_t;
-/* *INDENT-OFF* */
-typedef CLIB_PACKED (struct {
+typedef struct vnet_rewrite_header_t_
+{
/* Interface to mark re-written packets with. */
u32 sw_if_index;
@@ -83,8 +88,7 @@ typedef CLIB_PACKED (struct {
/* Rewrite string starting at end and going backwards. */
u8 data[0];
-}) vnet_rewrite_header_t;
-/* *INDENT-ON* */
+} __clib_packed vnet_rewrite_header_t;
/**
* At 16 bytes of rewrite herader we have enought space left for a IPv6
@@ -114,6 +118,13 @@ STATIC_ASSERT (sizeof (vnet_rewrite_header_t) <= 16,
sizeof (vnet_rewrite_header_t)]; \
}
+typedef struct __rewrite_unused_t__
+{
+ VNET_DECLARE_REWRITE;
+} __rewrite_unused_t;
+
+STATIC_ASSERT_SIZEOF (__rewrite_unused_t, 128);
+
always_inline void
vnet_rewrite_clear_data_internal (vnet_rewrite_header_t * rw, int max_size)
{