/*
* Copyright (c) 2020-2021 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 "inlines.h"
#include "face_node.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_MAPME
#define NEXT_MAPME_IP6 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_face_ip4_lock
#define LOCK_DPO_FACE_IP6 hicn_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
*/
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",
},
};
/**
* @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
*/
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",
},
};
/**** FACE OUTPUT *****/
typedef enum
{
HICN4_FACE_OUTPUT_NEXT_ECHO_REPLY,
HICN4_FACE_OUTPUT_NEXT_UDP4_ENCAP,
HICN4_FACE_OUTPUT_NEXT_UDP6_ENCAP,
HICN4_FACE_OUTPUT_N_NEXT,
} hicn4_face_output_next_t;
typedef enum
{
HICN6_FACE_OUTPUT_NEXT_ECHO_REPLY,
HICN6_FACE_OUTPUT_NEXT_UDP4_ENCAP,
HICN6_FACE_OUTPUT_NEXT_UDP6_ENCAP,
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;
int ret = hicn_ops_vft[type.l1]->rewrite_interest (
type, &hicn->protocol, &face->nat_addr, &temp_addr);
if (ret == HICN_LIB_ERROR_REWRITE_CKSUM_REQUIRED)
{
ensure_offload_flags (b0, ip46_address_is_ip4 (&face->nat_addr));
}
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 = ~0; \
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 = ~0; \
u32 next1 = ~0; \
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
*/
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",
[HICN4_FACE_OUTPUT_NEXT_UDP4_ENCAP] = "udp4-encap",
[HICN4_FACE_OUTPUT_NEXT_UDP6_ENCAP] = "udp6-encap" }
};
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
*/
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",
[HICN6_FACE_OUTPUT_NEXT_UDP4_ENCAP] = "udp4-encap",
[HICN6_FACE_OUTPUT_NEXT_UDP6_ENCAP] = "udp6-encap" }
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/