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authorAlberto Compagno <acompagn+fdio@cisco.com>2020-04-07 11:43:39 +0200
committerAlberto Compagno <acompagn+fdio@cisco.com>2020-05-04 11:16:59 +0200
commitc61e2e149421b849888bea0239c50607edce35ac (patch)
treef1191d338c9e27c77484c0d8bed6118c6d4612b6 /hicn-plugin/src/faces/face_node.c
parentdee66271e7f84cb756dae31d154982d5b6bb9807 (diff)
[HICN-590] Removed andjacency type specific face implementation
Changes in the new implementation are: - the adjacency index is replaced with a dpo that allows the single face node to dispatch the packet to the right vlib node. - local and remote address in the face are replaced with a single nat address which is used to perform the nat operation when rewriting an interest or a data (in case of tunnels the nat address will be equal to 0) - the list of next hop in the load balance is no longer a list of dpos but a list of face id (this makes the code easier and increases the number of next hop we supports) Signed-off-by: Alberto Compagno <acompagn+fdio@cisco.com> Change-Id: I4ac2b4eb09425bfe1b3ca9f82d7d0ff564297b0d
Diffstat (limited to 'hicn-plugin/src/faces/face_node.c')
-rw-r--r--hicn-plugin/src/faces/face_node.c934
1 files changed, 934 insertions, 0 deletions
diff --git a/hicn-plugin/src/faces/face_node.c b/hicn-plugin/src/faces/face_node.c
new file mode 100644
index 000000000..b146e3a6f
--- /dev/null
+++ b/hicn-plugin/src/faces/face_node.c
@@ -0,0 +1,934 @@
+/*
+ * Copyright (c) 2020 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.h"
+#include "face_node.h"
+#include "dpo_face.h"
+//#include "app/face_prod.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 hicn4_face_input_node;
+vlib_node_registration_t hicn4_face_output_node;
+vlib_node_registration_t hicn6_face_input_node;
+vlib_node_registration_t hicn6_face_output_node;
+
+#define ip_v4 4
+#define ip_v6 6
+
+static char *hicn4_face_input_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+static char *hicn6_face_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;
+ u8 packet_data[60];
+}
+hicn4_face_input_trace_t;
+
+typedef enum
+{
+ HICN4_FACE_INPUT_NEXT_DATA,
+ //HICN4_FACE_INPUT_NEXT_MAPME,
+ HICN4_FACE_INPUT_NEXT_ERROR_DROP,
+ HICN4_FACE_INPUT_N_NEXT,
+} hicn4_face_input_next_t;
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+ u8 packet_data[60];
+}
+hicn6_face_input_trace_t;
+
+typedef enum
+{
+ HICN6_FACE_INPUT_NEXT_DATA,
+ //HICN6_FACE_INPUT_NEXT_MAPME,
+ HICN6_FACE_INPUT_NEXT_ERROR_DROP,
+ HICN6_FACE_INPUT_N_NEXT,
+} hicn6_face_input_next_t;
+
+#define NEXT_MAPME_IP4 HICN4_FACE_INPUT_NEXT_ERROR_DROP//HICN4_FACE_INPUT_NEXT_MAPME
+#define NEXT_MAPME_IP6 HICN6_FACE_INPUT_NEXT_ERROR_DROP//HICN6_FACE_INPUT_NEXT_MAPME
+#define NEXT_DATA_IP4 HICN4_FACE_INPUT_NEXT_DATA
+#define NEXT_DATA_IP6 HICN6_FACE_INPUT_NEXT_DATA
+
+#define NEXT_ERROR_DROP_IP4 HICN4_FACE_INPUT_NEXT_ERROR_DROP
+#define NEXT_ERROR_DROP_IP6 HICN6_FACE_INPUT_NEXT_ERROR_DROP
+
+#define IP_HEADER_4 ip4_header_t
+#define IP_HEADER_6 ip6_header_t
+
+#define LOCK_DPO_FACE_IP4 hicn_dpo_face_ip4_lock
+#define LOCK_DPO_FACE_IP6 hicn_dpo_face_ip6_lock
+
+#define TRACE_INPUT_PKT_IP4 hicn4_face_input_trace_t
+#define TRACE_INPUT_PKT_IP6 hicn6_face_input_trace_t
+
+/*
+ * NOTE: Both hicn4_face_input_node_fn and hicn6_face_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_DPO_FACE_IP##ipv \
+ (&(hicnb0->face_id), \
+ &(hicnb0->in_faces_vec_id), \
+ &hicnb0->flags, \
+ &(ip_hdr->dst_address)); \
+ \
+ if ( PREDICT_FALSE(ret != HICN_ERROR_NONE) ) \
+ next0 = NEXT_ERROR_DROP_IP##ipv; \
+ else \
+ { \
+ vlib_increment_combined_counter ( \
+ &counters[hicnb0->face_id \
+ * HICN_N_COUNTER], thread_index, \
+ HICN_FACE_COUNTERS_DATA_RX, \
+ 1, \
+ vlib_buffer_length_in_chain(vm, b0)); \
+ 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; \
+ clib_memcpy_fast (t->packet_data, \
+ vlib_buffer_get_current (b0), \
+ sizeof (t->packet_data)); \
+ } \
+ \
+ \
+ /* 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_DPO_FACE_IP##ipv \
+ (&(hicnb0->face_id), \
+ &(hicnb0->in_faces_vec_id), \
+ &hicnb0->flags, \
+ &(ip_hdr0->dst_address)); \
+ \
+ ret1 = LOCK_DPO_FACE_IP##ipv \
+ (&(hicnb1->face_id), \
+ &(hicnb1->in_faces_vec_id), \
+ &hicnb1->flags, \
+ &(ip_hdr1->dst_address)); \
+ \
+ if ( PREDICT_FALSE(ret0 != HICN_ERROR_NONE) ) \
+ next0 = NEXT_ERROR_DROP_IP##ipv; \
+ else \
+ { \
+ vlib_increment_combined_counter ( \
+ &counters[hicnb0->face_id \
+ * HICN_N_COUNTER], thread_index, \
+ HICN_FACE_COUNTERS_DATA_RX, \
+ 1, \
+ vlib_buffer_length_in_chain(vm, b0)); \
+ stats.pkts_data_count += 1; \
+ } \
+ \
+ if ( PREDICT_FALSE(ret1 != HICN_ERROR_NONE) ) \
+ next1 = NEXT_ERROR_DROP_IP##ipv; \
+ else \
+ { \
+ vlib_increment_combined_counter ( \
+ &counters[hicnb1->face_id \
+ * HICN_N_COUNTER], thread_index,\
+ HICN_FACE_COUNTERS_DATA_RX, \
+ 1, \
+ vlib_buffer_length_in_chain(vm, b1)); \
+ 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; \
+ clib_memcpy_fast (t->packet_data, \
+ vlib_buffer_get_current (b0), \
+ sizeof (t->packet_data)); \
+ } \
+ \
+ 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; \
+ clib_memcpy_fast (t->packet_data, \
+ vlib_buffer_get_current (b1), \
+ sizeof (t->packet_data)); \
+ } \
+ \
+ \
+ /* 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
+hicn4_face_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 };
+ u32 thread_index = vm->thread_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_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 *
+hicn4_face_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 *);
+ hicn4_face_input_trace_t *t =
+ va_arg (*args, hicn4_face_input_trace_t *);
+
+ s = format (s, "FACE_IP4_INPUT: pkt: %d, sw_if_index %d, next index %d\n%U",
+ (int) t->pkt_type, t->sw_if_index, t->next_index,
+ format_ip4_header, t->packet_data, sizeof (t->packet_data));
+ return (s);
+}
+
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE(hicn4_face_input_node) =
+{
+ .function = hicn4_face_input_node_fn,
+ .name = "hicn4-face-input",
+ .vector_size = sizeof(u32),
+ .format_trace = hicn4_face_input_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(hicn4_face_input_error_strings),
+ .error_strings = hicn4_face_input_error_strings,
+ .n_next_nodes = HICN4_FACE_INPUT_N_NEXT,
+ /* edit / add dispositions here */
+ .next_nodes =
+ {
+ [HICN4_FACE_INPUT_NEXT_DATA] = "hicn-data-pcslookup",
+ //[HICN4_FACE_INPUT_NEXT_MAPME] = "hicn-mapme-ack",
+ [HICN4_FACE_INPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+/**
+ * @brief IPv6 face input node function
+ * @see hicn6_face_input_node_fn
+ */
+static uword
+hicn6_face_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 };
+ u32 thread_index = vm->thread_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_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 *
+hicn6_face_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 *);
+ hicn6_face_input_trace_t *t =
+ va_arg (*args, hicn6_face_input_trace_t *);
+
+ s = format (s, "FACE_IP6_INPUT: pkt: %d, sw_if_index %d, next index %d\n%U",
+ (int) t->pkt_type, t->sw_if_index, t->next_index,
+ format_ip6_header, t->packet_data, sizeof (t->packet_data));
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE(hicn6_face_input_node) =
+{
+ .function = hicn6_face_input_node_fn,
+ .name = "hicn6-face-input",
+ .vector_size = sizeof(u32),
+ .format_trace = hicn6_face_input_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(hicn6_face_input_error_strings),
+ .error_strings = hicn6_face_input_error_strings,
+ .n_next_nodes = HICN6_FACE_INPUT_N_NEXT,
+ /* edit / add dispositions here */
+ .next_nodes =
+ {
+ [HICN6_FACE_INPUT_NEXT_DATA] = "hicn-data-pcslookup",
+ //[HICN6_FACE_INPUT_NEXT_MAPME] = "hicn-mapme-ack",
+ [HICN6_FACE_INPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+/**** FACE OUTPUT *****/
+
+typedef enum
+{
+ HICN4_FACE_OUTPUT_NEXT_ECHO_REPLY,
+ HICN4_FACE_OUTPUT_N_NEXT,
+} hicn4_face_output_next_t;
+
+typedef enum
+{
+ HICN6_FACE_OUTPUT_NEXT_ECHO_REPLY,
+ HICN6_FACE_OUTPUT_N_NEXT,
+} hicn6_face_output_next_t;
+
+/* static_always_inline void */
+/* hicn_reply_probe_v4 (vlib_buffer_t * b, hicn_face_t * face) */
+/* { */
+/* hicn_header_t *h0 = vlib_buffer_get_current (b); */
+/* hicn_face_ip_t * face_ip = (hicn_face_ip_t *)(&face->data); */
+/* h0->v4.ip.saddr = h0->v4.ip.daddr; */
+/* h0->v4.ip.daddr = face_ip->local_addr.ip4; */
+/* vnet_buffer (b)->sw_if_index[VLIB_RX] = face->shared.sw_if; */
+
+/* u16 * dst_port_ptr = (u16 *)(((u8*)h0) + sizeof(ip4_header_t) + sizeof(u16)); */
+/* u16 dst_port = *dst_port_ptr; */
+/* u16 * src_port_ptr = (u16 *)(((u8*)h0) + sizeof(ip4_header_t)); */
+
+/* *dst_port_ptr = *src_port_ptr; */
+/* *src_port_ptr = dst_port; */
+
+/* hicn_type_t type = hicn_get_buffer (b)->type; */
+/* hicn_ops_vft[type.l1]->set_lifetime (type, &h0->protocol, 0); */
+/* } */
+
+/* static_always_inline void */
+/* hicn_reply_probe_v6 (vlib_buffer_t * b, hicn_face_t * face) */
+/* { */
+/* hicn_header_t *h0 = vlib_buffer_get_current (b); */
+/* hicn_face_ip_t * face_ip = (hicn_face_ip_t *)(&face->data); */
+/* h0->v6.ip.saddr = h0->v6.ip.daddr; */
+/* h0->v6.ip.daddr = face_ip->local_addr.ip6; */
+/* vnet_buffer (b)->sw_if_index[VLIB_RX] = face->shared.sw_if; */
+
+/* u16 * dst_port_ptr = (u16 *)(((u8*)h0) + sizeof(ip6_header_t) + sizeof(u16)); */
+/* u16 dst_port = *dst_port_ptr; */
+/* u16 * src_port_ptr = (u16 *)(((u8*)h0) + sizeof(ip6_header_t)); */
+
+/* *dst_port_ptr = *src_port_ptr; */
+/* *src_port_ptr = dst_port; */
+
+/* hicn_type_t type = hicn_get_buffer (b)->type; */
+/* hicn_ops_vft[type.l1]->set_lifetime (type, &h0->protocol, 0); */
+
+/* } */
+
+/* static_always_inline u32 */
+/* hicn_face_match_probe (vlib_buffer_t * b, hicn_face_t * face, u32 * next) */
+/* { */
+
+/* u8 *ptr = vlib_buffer_get_current (b); */
+/* u8 v = *ptr & 0xf0; */
+/* u8 res = 0; */
+
+/* if ( v == 0x40 ) */
+/* { */
+/* u16 * dst_port = (u16 *)(ptr + sizeof(ip4_header_t) + sizeof(u16)); */
+/* if (*dst_port == clib_net_to_host_u16(DEFAULT_PROBING_PORT)) */
+/* { */
+/* hicn_reply_probe_v6(b, face); */
+/* *next = HICN4_FACE_NEXT_ECHO_REPLY; */
+/* res = 1; */
+/* } */
+/* } */
+/* else if ( v == 0x60 ) */
+/* { */
+/* u16 * dst_port = (u16 *)(ptr + sizeof(ip6_header_t) + sizeof(u16)); */
+/* if (*dst_port == clib_net_to_host_u16(DEFAULT_PROBING_PORT)) */
+/* { */
+/* hicn_reply_probe_v6(b, face); */
+/* *next = HICN6_FACE_NEXT_ECHO_REPLY; */
+/* res = 1; */
+/* } */
+/* } */
+/* return res; */
+/* } */
+
+
+static inline void
+hicn_face_rewrite_interest (vlib_main_t * vm, vlib_buffer_t * b0,
+ hicn_face_t * face, u32 * next)
+{
+
+ /* if ((face->flags & HICN_FACE_FLAGS_APPFACE_PROD) && hicn_face_match_probe(b0, face, next)) */
+ /* return; */
+
+ 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,
+ &face->nat_addr, &temp_addr);
+
+ if (ip46_address_is_ip4(&face->nat_addr))
+ b0->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
+
+ b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+
+ ASSERT(face->flags & HICN_FACE_FLAGS_FACE);
+
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = face->dpo.dpoi_index;
+ *next = face->dpo.dpoi_next_node;
+}
+
+static char *hicn4_face_output_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+static char *hicn6_face_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;
+ u8 packet_data[60];
+}
+hicn4_face_output_trace_t;
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+ u8 packet_data[60];
+}
+hicn6_face_output_trace_t;
+
+#define TRACE_OUTPUT_PKT_IP4 hicn4_face_output_trace_t
+#define TRACE_OUTPUT_PKT_IP6 hicn6_face_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); \
+ \
+ hicn_face_id_t face_id = vnet_buffer (b0)->ip.adj_index[VLIB_TX]; \
+ face = \
+ hicn_dpoi_get_from_idx (face_id); \
+ \
+ if (PREDICT_TRUE(face != NULL)) \
+ { \
+ hicn_face_rewrite_interest \
+ (vm, b0, face, &next0); \
+ stats.pkts_interest_count += 1; \
+ vlib_increment_combined_counter ( \
+ &counters[face_id * HICN_N_COUNTER], \
+ thread_index, \
+ HICN_FACE_COUNTERS_INTEREST_TX, \
+ 1, \
+ vlib_buffer_length_in_chain(vm, b0)); \
+ } \
+ \
+ 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; \
+ clib_memcpy_fast (t->packet_data, \
+ vlib_buffer_get_current (b0), \
+ sizeof (t->packet_data)); \
+ } \
+ \
+ \
+ /* 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); \
+ \
+ hicn_face_id_t face_id0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX]; \
+ hicn_face_id_t face_id1 = vnet_buffer (b1)->ip.adj_index[VLIB_TX]; \
+ face0 = \
+ hicn_dpoi_get_from_idx (face_id0); \
+ face1 = \
+ hicn_dpoi_get_from_idx (face_id1); \
+ \
+ if (PREDICT_TRUE(face0 != NULL)) \
+ { \
+ hicn_face_rewrite_interest \
+ (vm, b0, face0, &next0); \
+ stats.pkts_interest_count += 1; \
+ vlib_increment_combined_counter ( \
+ &counters[face_id0 * HICN_N_COUNTER], \
+ thread_index, \
+ HICN_FACE_COUNTERS_INTEREST_TX, \
+ 1, \
+ vlib_buffer_length_in_chain(vm, b0)); \
+ } \
+ \
+ if (PREDICT_TRUE(face1 != NULL)) \
+ { \
+ hicn_face_rewrite_interest \
+ (vm, b1, face1, &next1); \
+ stats.pkts_interest_count += 1; \
+ vlib_increment_combined_counter ( \
+ &counters[face_id1 * HICN_N_COUNTER], \
+ thread_index, \
+ HICN_FACE_COUNTERS_INTEREST_TX, \
+ 1, \
+ vlib_buffer_length_in_chain(vm, b1)); \
+ } \
+ \
+ 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; \
+ clib_memcpy_fast (t->packet_data, \
+ vlib_buffer_get_current (b0), \
+ sizeof (t->packet_data)); \
+ } \
+ \
+ 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; \
+ clib_memcpy_fast (t->packet_data, \
+ vlib_buffer_get_current (b1), \
+ sizeof (t->packet_data)); \
+ } \
+ \
+ \
+ /* 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
+hicn4_face_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 };
+ u32 thread_index = vm->thread_index;
+
+ 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 *
+hicn4_face_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 *);
+ hicn4_face_output_trace_t *t =
+ va_arg (*args, hicn4_face_output_trace_t *);
+
+ s =
+ format (s, "FACE_IP4_OUTPUT: pkt: %d, sw_if_index %d, next index %d\n%U",
+ (int) t->pkt_type, t->sw_if_index, t->next_index,
+ format_ip4_header, t->packet_data, sizeof (t->packet_data));
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE(hicn4_face_output_node) =
+{
+ .function = hicn4_face_output_node_fn,
+ .name = "hicn4-face-output",
+ .vector_size = sizeof(u32),
+ .format_trace = hicn4_face_output_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(hicn4_face_output_error_strings),
+ .error_strings = hicn4_face_output_error_strings,
+ .n_next_nodes = HICN4_FACE_OUTPUT_N_NEXT,
+ /* Reusing the list of nodes from lookup to be compatible with arp */
+ .next_nodes =
+ {
+ [HICN4_FACE_OUTPUT_NEXT_ECHO_REPLY] = "hicn4-face-input",
+ }
+};
+/* *INDENT-ON* */
+
+
+static uword
+hicn6_face_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 };
+ u32 thread_index = vm->thread_index;
+
+ 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 *
+hicn6_face_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 *);
+ hicn6_face_output_trace_t *t =
+ va_arg (*args, hicn6_face_output_trace_t *);
+
+ s =
+ format (s, "FACE_IP6_OUTPUT: pkt: %d, sw_if_index %d, next index %d\n%U",
+ (int) t->pkt_type, t->sw_if_index, t->next_index,
+ format_ip6_header, t->packet_data, sizeof (t->packet_data));
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE(hicn6_face_output_node) =
+{
+ .function = hicn6_face_output_node_fn,
+ .name = "hicn6-face-output",
+ .vector_size = sizeof(u32),
+ .format_trace = hicn6_face_output_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(hicn6_face_output_error_strings),
+ .error_strings = hicn6_face_output_error_strings,
+ .n_next_nodes = HICN6_FACE_OUTPUT_N_NEXT,
+ /* Reusing the list of nodes from lookup to be compatible with neighbour discovery */
+ .next_nodes =
+ {
+ [HICN6_FACE_OUTPUT_NEXT_ECHO_REPLY] = "hicn6-face-input"
+ }
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */