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|
/*
* 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;
u8 packet_data[60];
}
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;
u8 packet_data[60];
}
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->flags, \
&(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 \
{ \
vlib_increment_combined_counter ( \
&counters[hicnb0->face_dpo_id.dpoi_index \
* 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_FROM_LOCAL_IP##ipv \
(&(hicnb0->face_dpo_id), \
&hicnb0->flags, \
&(ip_hdr0->dst_address), \
vnet_buffer (b0)->sw_if_index[VLIB_RX]); \
\
ret1 = LOCK_FROM_LOCAL_IP##ipv \
(&(hicnb1->face_dpo_id), \
&hicnb1->flags, \
&(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 \
{ \
vlib_increment_combined_counter ( \
&counters[hicnb0->face_dpo_id.dpoi_index \
* 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_dpo_id.dpoi_index \
* 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
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 };
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 *
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\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(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 };
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 *
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\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(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,
hicn_face_t * face, u32 * next)
{
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);
int is_iface = 0;
ip_adjacency_t *adj;
if (PREDICT_FALSE (face->shared.adj == ~0))
is_iface = 1;
else
adj = adj_get (face->shared.adj);
/* In case the adj is not complete, we look if a better one exists, otherwise we send an arp request
* This is necessary to account for the case in which when we create a face, there isn't a /128(/32) adjacency and we match with a more general route which is in glean state
* In this case in fact, the general route will not be update upone receiving of a arp or neighbour responde, but a new /128(/32) will be created
*/
if (PREDICT_FALSE
(is_iface || adj->lookup_next_index < IP_LOOKUP_NEXT_REWRITE))
{
fib_prefix_t fib_pfx;
fib_node_index_t fib_entry_index;
fib_prefix_from_ip46_addr (&ip_face->remote_addr, &fib_pfx);
fib_pfx.fp_len = ip46_address_is_ip4(&ip_face->remote_addr)? 32 : 128;
u32 fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
HICN_FIB_TABLE,
FIB_SOURCE_PLUGIN_HI);
fib_entry_index = fib_table_lookup (fib_index, &fib_pfx);
face->shared.adj = fib_entry_get_adj (fib_entry_index);
face->shared.flags &= ~HICN_FACE_FLAGS_IFACE;
face->shared.flags |= HICN_FACE_FLAGS_FACE;
adj = adj_get (face->shared.adj);
hicn_ops_vft[type.l1]->rewrite_data (type, &hicn->protocol,
&ip_face->remote_addr, &temp_addr,
0);
}
vnet_buffer (b0)->ip.adj_index[VLIB_TX] = face->shared.adj;
*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;
u8 packet_data[60];
}
hicn_face_ip4_output_trace_t;
/* Trace context struct */
typedef struct
{
u32 next_index;
u32 sw_if_index;
u8 pkt_type;
u8 packet_data[60];
}
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); \
\
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
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 };
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 *
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\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(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 };
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 *
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\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(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:
*/
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