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-rwxr-xr-xhicn-plugin/src/faces/ip/face_ip_node.c761
1 files changed, 761 insertions, 0 deletions
diff --git a/hicn-plugin/src/faces/ip/face_ip_node.c b/hicn-plugin/src/faces/ip/face_ip_node.c
new file mode 100755
index 000000000..6081e4737
--- /dev/null
+++ b/hicn-plugin/src/faces/ip/face_ip_node.c
@@ -0,0 +1,761 @@
+/*
+ * Copyright (c) 2017-2019 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.
+ */
+
+#include <vnet/adj/adj.h>
+
+#include "face_ip.h"
+#include "face_ip_node.h"
+#include "dpo_ip.h"
+#include "../../strategy_dpo_manager.h"
+#include "../face.h"
+#include "../../cache_policies/cs_lru.h"
+#include "../../infra.h"
+#include "../../hicn.h"
+
+/**
+ * @File
+ *
+ * Definition of the nodes for ip incomplete faces.
+ */
+
+vlib_node_registration_t hicn_face_ip4_input_node;
+vlib_node_registration_t hicn_face_ip4_output_node;
+vlib_node_registration_t hicn_face_ip6_input_node;
+vlib_node_registration_t hicn_face_ip6_output_node;
+
+#define ip_v4 4
+#define ip_v6 6
+
+static char *hicn_face_ip4_input_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+static char *hicn_face_ip6_input_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_face_ip4_input_trace_t;
+
+typedef enum
+{
+ HICN_FACE_IP4_INPUT_NEXT_DATA,
+ HICN_FACE_IP4_INPUT_NEXT_MAPME,
+ HICN_FACE_IP4_INPUT_NEXT_ERROR_DROP,
+ HICN_FACE_IP4_INPUT_N_NEXT,
+} hicn_face_ip4_input_next_t;
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_face_ip6_input_trace_t;
+
+typedef enum
+{
+ HICN_FACE_IP6_INPUT_NEXT_DATA,
+ HICN_FACE_IP6_INPUT_NEXT_MAPME,
+ HICN_FACE_IP6_INPUT_NEXT_ERROR_DROP,
+ HICN_FACE_IP6_INPUT_N_NEXT,
+} hicn_face_ip6_input_next_t;
+
+#define NEXT_MAPME_IP4 HICN_FACE_IP4_INPUT_NEXT_MAPME
+#define NEXT_MAPME_IP6 HICN_FACE_IP6_INPUT_NEXT_MAPME
+#define NEXT_DATA_IP4 HICN_FACE_IP4_INPUT_NEXT_DATA
+#define NEXT_DATA_IP6 HICN_FACE_IP6_INPUT_NEXT_DATA
+
+#define NEXT_ERROR_DROP_IP4 HICN_FACE_IP4_INPUT_NEXT_ERROR_DROP
+#define NEXT_ERROR_DROP_IP6 HICN_FACE_IP6_INPUT_NEXT_ERROR_DROP
+
+#define IP_HEADER_4 ip4_header_t
+#define IP_HEADER_6 ip6_header_t
+
+#define LOCK_FROM_LOCAL_IP4 hicn_dpo_ip4_lock_from_local
+#define LOCK_FROM_LOCAL_IP6 hicn_dpo_ip6_lock_from_local
+
+#define TRACE_INPUT_PKT_IP4 hicn_face_ip4_input_trace_t
+#define TRACE_INPUT_PKT_IP6 hicn_face_ip6_input_trace_t
+
+/*
+ * NOTE: Both hicn_face_ip4_input_node_fn and hicn_face_ip6_input_node_fn
+ * present a similar codebase. Macro are hard to debug, although the
+ * followind code is pretty straighforward and most of the complexity is in
+ * functions that can be easily debug.
+ */
+#define face_input_x1(ipv) \
+ do{ \
+ vlib_buffer_t *b0; \
+ u32 bi0; \
+ u32 next0 = NEXT_ERROR_DROP_IP##ipv; \
+ IP_HEADER_##ipv * ip_hdr = NULL; \
+ hicn_buffer_t * hicnb0; \
+ int ret; \
+ /* Prefetch for next iteration. */ \
+ if (n_left_from > 1) \
+ { \
+ vlib_buffer_t *b1; \
+ b1 = vlib_get_buffer (vm, from[1]); \
+ CLIB_PREFETCH (b1, 2*CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ from += 1; \
+ n_left_from -= 1; \
+ to_next[0] = bi0; \
+ to_next += 1; \
+ n_left_to_next -= 1; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ hicnb0 = hicn_get_buffer(b0); \
+ ip_hdr = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
+ \
+ u8 is_icmp = ip_hdr->protocol == IPPROTO_ICMPV##ipv; \
+ \
+ next0 = is_icmp*NEXT_MAPME_IP##ipv + \
+ (1-is_icmp)*NEXT_DATA_IP##ipv; \
+ \
+ ret = LOCK_FROM_LOCAL_IP##ipv \
+ (&(hicnb0->face_dpo_id), \
+ &hicnb0->is_appface, \
+ &(ip_hdr->dst_address), \
+ vnet_buffer (b0)->sw_if_index[VLIB_RX]); \
+ \
+ if ( PREDICT_FALSE(ret != HICN_ERROR_NONE) ) \
+ next0 = NEXT_ERROR_DROP_IP##ipv; \
+ else \
+ stats.pkts_data_count += 1; \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_INPUT_PKT_IP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, next0); \
+ }while(0)
+
+
+#define face_input_x2(ipv) \
+ do{ \
+ vlib_buffer_t *b0, *b1; \
+ u32 bi0, bi1; \
+ u32 next0 = NEXT_ERROR_DROP_IP##ipv; \
+ u32 next1 = NEXT_ERROR_DROP_IP##ipv; \
+ IP_HEADER_##ipv * ip_hdr0 = NULL; \
+ IP_HEADER_##ipv * ip_hdr1 = NULL; \
+ hicn_buffer_t * hicnb0; \
+ hicn_buffer_t * hicnb1; \
+ int ret0, ret1; \
+ /* Prefetch for next iteration. */ \
+ { \
+ vlib_buffer_t *b2, *b3; \
+ b2 = vlib_get_buffer (vm, from[2]); \
+ b3 = vlib_get_buffer (vm, from[3]); \
+ CLIB_PREFETCH (b2, 2*CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b3, 2*CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b2->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ CLIB_PREFETCH (b3->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ bi1 = from[1]; \
+ from += 2; \
+ n_left_from -= 2; \
+ to_next[0] = bi0; \
+ to_next[1] = bi1; \
+ to_next += 2; \
+ n_left_to_next -= 2; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ b1 = vlib_get_buffer (vm, bi1); \
+ hicnb0 = hicn_get_buffer(b0); \
+ hicnb1 = hicn_get_buffer(b1); \
+ ip_hdr0 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
+ ip_hdr1 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b1); \
+ \
+ u8 is_icmp0 = ip_hdr0->protocol == IPPROTO_ICMPV##ipv; \
+ u8 is_icmp1 = ip_hdr1->protocol == IPPROTO_ICMPV##ipv; \
+ \
+ next0 = is_icmp0*NEXT_MAPME_IP##ipv + \
+ (1-is_icmp0)*NEXT_DATA_IP##ipv; \
+ \
+ next1 = is_icmp1*NEXT_MAPME_IP##ipv + \
+ (1-is_icmp1)*NEXT_DATA_IP##ipv; \
+ \
+ \
+ ret0 = LOCK_FROM_LOCAL_IP##ipv \
+ (&(hicnb0->face_dpo_id), \
+ &hicnb0->is_appface, \
+ &(ip_hdr0->dst_address), \
+ vnet_buffer (b0)->sw_if_index[VLIB_RX]); \
+ \
+ ret1 = LOCK_FROM_LOCAL_IP##ipv \
+ (&(hicnb1->face_dpo_id), \
+ &hicnb1->is_appface, \
+ &(ip_hdr1->dst_address), \
+ vnet_buffer (b1)->sw_if_index[VLIB_RX]); \
+ \
+ if ( PREDICT_FALSE(ret0 != HICN_ERROR_NONE) ) \
+ next0 = NEXT_ERROR_DROP_IP##ipv; \
+ else \
+ stats.pkts_data_count += 1; \
+ \
+ if ( PREDICT_FALSE(ret1 != HICN_ERROR_NONE) ) \
+ next1 = NEXT_ERROR_DROP_IP##ipv; \
+ else \
+ stats.pkts_data_count += 1; \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_INPUT_PKT_IP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b1->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_INPUT_PKT_IP##ipv *t = \
+ vlib_add_trace (vm, node, b1, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; \
+ t->next_index = next1; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, bi1, next0, next1); \
+ }while(0)
+
+
+static uword
+hicn_face_ip4_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ face_input_x2 (4);
+ }
+
+ /* Dual loop, X1 */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ face_input_x1 (4);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_DATAS, stats.pkts_data_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_face_ip4_input_format_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 *);
+ hicn_face_ip4_input_trace_t *t =
+ va_arg (*args, hicn_face_ip4_input_trace_t *);
+
+ s = format (s, "FACE_IP4_INPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE(hicn_face_ip4_input_node) =
+{
+ .function = hicn_face_ip4_input_node_fn,
+ .name = "hicn-face-ip4-input",
+ .vector_size = sizeof(u32),
+ .format_trace = hicn_face_ip4_input_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(hicn_face_ip4_input_error_strings),
+ .error_strings = hicn_face_ip4_input_error_strings,
+ .n_next_nodes = HICN_FACE_IP4_INPUT_N_NEXT,
+ /* edit / add dispositions here */
+ .next_nodes =
+ {
+ [HICN_FACE_IP4_INPUT_NEXT_DATA] = "hicn-data-pcslookup",
+ [HICN_FACE_IP4_INPUT_NEXT_MAPME] = "hicn-mapme-ack",
+ [HICN_FACE_IP4_INPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+/**
+ * @brief IPv6 face input node function
+ * @see hicn_face_ip4_input_node_fn
+ */
+static uword
+hicn_face_ip6_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ face_input_x2 (6);
+ }
+
+ /* Dual loop, X1 */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ face_input_x1 (6);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_DATAS, stats.pkts_data_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_face_ip6_input_format_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 *);
+ hicn_face_ip6_input_trace_t *t =
+ va_arg (*args, hicn_face_ip6_input_trace_t *);
+
+ s = format (s, "FACE_IP6_INPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE(hicn_face_ip6_input_node) =
+{
+ .function = hicn_face_ip6_input_node_fn,
+ .name = "hicn-face-ip6-input",
+ .vector_size = sizeof(u32),
+ .format_trace = hicn_face_ip6_input_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(hicn_face_ip6_input_error_strings),
+ .error_strings = hicn_face_ip6_input_error_strings,
+ .n_next_nodes = HICN_FACE_IP6_INPUT_N_NEXT,
+ /* edit / add dispositions here */
+ .next_nodes =
+ {
+ [HICN_FACE_IP6_INPUT_NEXT_DATA] = "hicn-data-pcslookup",
+ [HICN_FACE_IP6_INPUT_NEXT_MAPME] = "hicn-mapme-ack",
+ [HICN_FACE_IP6_INPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+/**** FACE OUTPUT *****/
+
+static inline void
+hicn_face_rewrite_interest (vlib_main_t * vm, vlib_buffer_t * b0,
+ const hicn_face_t * face, u32 * next)
+{
+ ip_adjacency_t *adj = adj_get (face->shared.adj);
+
+ /* We assume the ip adjacency has already the MAC/link layer address */
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = face->shared.adj;
+ hicn_header_t *hicn = vlib_buffer_get_current (b0);
+
+ hicn_face_ip_t *ip_face = (hicn_face_ip_t *) face->data;
+
+ ip46_address_t temp_addr;
+ ip46_address_reset (&temp_addr);
+ hicn_type_t type = hicn_get_buffer (b0)->type;
+ hicn_ops_vft[type.l1]->rewrite_interest (type, &hicn->protocol,
+ &ip_face->local_addr, &temp_addr);
+
+ /* We rewrite the dst address to send an arp/neighbour discovert request */
+ if (PREDICT_FALSE
+ (adj->lookup_next_index == IP_LOOKUP_NEXT_ARP
+ || adj->lookup_next_index == IP_LOOKUP_NEXT_GLEAN))
+ hicn_ops_vft[type.l1]->rewrite_data (type, &hicn->protocol,
+ &ip_face->remote_addr, &temp_addr,
+ 0);
+
+ *next = adj->lookup_next_index;
+}
+
+static char *hicn_face_ip4_output_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+static char *hicn_face_ip6_output_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_face_ip4_output_trace_t;
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_face_ip6_output_trace_t;
+
+#define TRACE_OUTPUT_PKT_IP4 hicn_face_ip4_output_trace_t
+#define TRACE_OUTPUT_PKT_IP6 hicn_face_ip6_output_trace_t
+
+#define face_output_x1(ipv) \
+ do { \
+ vlib_buffer_t *b0; \
+ u32 bi0; \
+ u32 next0 = IP_LOOKUP_NEXT_DROP; \
+ hicn_face_t * face; \
+ \
+ /* Prefetch for next iteration. */ \
+ if (n_left_from > 1) \
+ { \
+ vlib_buffer_t *b1; \
+ b1 = vlib_get_buffer (vm, from[1]); \
+ CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES , STORE); \
+ } \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ from += 1; \
+ n_left_from -= 1; \
+ to_next[0] = bi0; \
+ to_next += 1; \
+ n_left_to_next -= 1; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ \
+ face = \
+ hicn_dpoi_get_from_idx (vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
+ \
+ if (PREDICT_TRUE(face != NULL)) \
+ { \
+ hicn_face_rewrite_interest \
+ (vm, b0, face, &next0); \
+ stats.pkts_interest_count += 1; \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_OUTPUT_PKT_IP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, next0); \
+ }while(0)
+
+#define face_output_x2(ipv) \
+ do { \
+ vlib_buffer_t *b0, *b1; \
+ u32 bi0, bi1; \
+ u32 next0 = IP_LOOKUP_NEXT_DROP; \
+ u32 next1 = IP_LOOKUP_NEXT_DROP; \
+ hicn_face_t *face0, *face1; \
+ \
+ /* Prefetch for next iteration. */ \
+ { \
+ vlib_buffer_t *b2, *b3; \
+ b2 = vlib_get_buffer (vm, from[2]); \
+ b3 = vlib_get_buffer (vm, from[3]); \
+ CLIB_PREFETCH (b2, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b3, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b2->data, CLIB_CACHE_LINE_BYTES , STORE); \
+ CLIB_PREFETCH (b3->data, CLIB_CACHE_LINE_BYTES , STORE); \
+ } \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ bi1 = from[1]; \
+ from += 2; \
+ n_left_from -= 2; \
+ to_next[0] = bi0; \
+ to_next[1] = bi1; \
+ to_next += 2; \
+ n_left_to_next -= 2; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ b1 = vlib_get_buffer (vm, bi1); \
+ \
+ face0 = \
+ hicn_dpoi_get_from_idx (vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
+ face1 = \
+ hicn_dpoi_get_from_idx (vnet_buffer (b1)->ip.adj_index[VLIB_TX]); \
+ \
+ if (PREDICT_TRUE(face0 != NULL)) \
+ { \
+ hicn_face_rewrite_interest \
+ (vm, b0, face0, &next0); \
+ stats.pkts_interest_count += 1; \
+ } \
+ \
+ if (PREDICT_TRUE(face1 != NULL)) \
+ { \
+ hicn_face_rewrite_interest \
+ (vm, b1, face1, &next1); \
+ stats.pkts_interest_count += 1; \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_OUTPUT_PKT_IP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b1->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_OUTPUT_PKT_IP##ipv *t = \
+ vlib_add_trace (vm, node, b1, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; \
+ t->next_index = next1; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, bi1, next0, next1); \
+ }while(0)
+
+
+static uword
+hicn_face_ip4_output_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ from = vlib_frame_vector_args (frame);
+ n_left_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);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ face_output_x2 (4);
+ }
+
+ /* Dual loop, X1 */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ face_output_x1 (4);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_INTERESTS,
+ stats.pkts_interest_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_face_ip4_output_format_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 *);
+ hicn_face_ip4_output_trace_t *t =
+ va_arg (*args, hicn_face_ip4_output_trace_t *);
+
+ s = format (s, "FACE_IP4_OUTPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE(hicn_face_ip4_output_node) =
+{
+ .function = hicn_face_ip4_output_node_fn,
+ .name = "hicn-face-ip4-output",
+ .vector_size = sizeof(u32),
+ .format_trace = hicn_face_ip4_output_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(hicn_face_ip4_output_error_strings),
+ .error_strings = hicn_face_ip4_output_error_strings,
+ .n_next_nodes = IP4_LOOKUP_N_NEXT,
+ /* Reusing the list of nodes from lookup to be compatible with arp */
+ .next_nodes = IP4_LOOKUP_NEXT_NODES,
+};
+/* *INDENT-ON* */
+
+
+static uword
+hicn_face_ip6_output_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ from = vlib_frame_vector_args (frame);
+ n_left_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);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ face_output_x2 (6);
+ }
+
+ /* Dual loop, X1 */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ face_output_x1 (6);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_INTERESTS,
+ stats.pkts_interest_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_face_ip6_output_format_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 *);
+ hicn_face_ip6_output_trace_t *t =
+ va_arg (*args, hicn_face_ip6_output_trace_t *);
+
+ s = format (s, "FACE_IP6_OUTPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE(hicn_face_ip6_output_node) =
+{
+ .function = hicn_face_ip6_output_node_fn,
+ .name = "hicn-face-ip6-output",
+ .vector_size = sizeof(u32),
+ .format_trace = hicn_face_ip6_output_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(hicn_face_ip6_output_error_strings),
+ .error_strings = hicn_face_ip6_output_error_strings,
+ .n_next_nodes = IP6_LOOKUP_N_NEXT,
+ /* Reusing the list of nodes from lookup to be compatible with neighbour discovery */
+ .next_nodes = IP6_LOOKUP_NEXT_NODES,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */