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|
/*
* 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 "face.h"
#include "inlines.h"
#include "../strategy_dpo_manager.h"
#include "../hicn.h"
#include "../infra.h"
#include "../cache_policies/cs_lru.h"
/**
* @File
*
* Definition of the nodes for ip incomplete faces.
*/
vlib_node_registration_t hicn4_iface_input_node;
vlib_node_registration_t hicn4_iface_output_node;
vlib_node_registration_t hicn6_iface_input_node;
vlib_node_registration_t hicn6_iface_output_node;
u32 data_fwd_iface_ip4_vlib_edge;
u32 data_fwd_iface_ip6_vlib_edge;
static char *hicn4_iface_input_error_strings[] = {
#define _(sym, string) string,
foreach_hicnfwd_error
#undef _
};
static char *hicn6_iface_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_iface_input_trace_t;
typedef enum
{
HICN4_IFACE_INPUT_NEXT_INTEREST,
HICN4_IFACE_INPUT_NEXT_MAPME,
HICN4_IFACE_INPUT_NEXT_ERROR_DROP,
HICN4_IFACE_INPUT_N_NEXT,
} hicn4_iface_input_next_t;
/* Trace context struct */
typedef struct
{
u32 next_index;
u32 sw_if_index;
u8 pkt_type;
u8 packet_data[60];
} hicn6_iface_input_trace_t;
typedef enum
{
HICN6_IFACE_INPUT_NEXT_INTEREST,
HICN6_IFACE_INPUT_NEXT_MAPME,
HICN6_IFACE_INPUT_NEXT_ERROR_DROP,
HICN6_IFACE_INPUT_N_NEXT,
} hicn6_iface_input_next_t;
#define NEXT_MAPME_IP4 HICN4_IFACE_INPUT_NEXT_MAPME
#define NEXT_MAPME_IP6 HICN6_IFACE_INPUT_NEXT_MAPME
#define NEXT_INTEREST_IP4 HICN4_IFACE_INPUT_NEXT_INTEREST
#define NEXT_INTEREST_IP6 HICN6_IFACE_INPUT_NEXT_INTEREST
#define ADDRESS_IP4 \
ip_interface_address_t *ia = 0; \
ip4_address_t *local_address = \
ip4_interface_first_address (&ip4_main, swif, &ia)
#define ADDRESS_IP6 \
ip6_address_t *local_address = ip6_interface_first_address (&ip6_main, swif)
#define ADDRESSX2_IP4 \
ip_interface_address_t *ia0, *ia1; \
ia0 = ia1 = 0; \
ip4_address_t *local_address0 = \
ip4_interface_first_address (&ip4_main, swif0, &ia0); \
ip4_address_t *local_address1 = \
ip4_interface_first_address (&ip4_main, swif1, &ia1);
#define ADDRESSX2_IP6 \
ip6_address_t *local_address0 = \
ip6_interface_first_address (&ip6_main, swif0); \
ip6_address_t *local_address1 = \
ip6_interface_first_address (&ip6_main, swif1);
#define DPO_ADD_LOCK_IFACE_IP4 hicn_iface_ip4_add_and_lock
#define DPO_ADD_LOCK_IFACE_IP6 hicn_iface_ip6_add_and_lock
//#define VLIB_EDGE_IP4 data_fwd_iface_ip4_vlib_edge
//#define VLIB_EDGE_IP6 data_fwd_iface_ip6_vlib_edge
#define IP_HEADER_4 ip4_header_t
#define IP_HEADER_6 ip6_header_t
#define TRACE_INPUT_PKT_IP4 hicn4_iface_input_trace_t
#define TRACE_INPUT_PKT_IP6 hicn6_iface_input_trace_t
// NODE OUTPUT
static char *hicn4_iface_output_error_strings[] = {
#define _(sym, string) string,
foreach_hicnfwd_error
#undef _
};
static char *hicn6_iface_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_iface_output_trace_t;
typedef enum
{
HICN4_IFACE_OUTPUT_NEXT_LOOKUP,
HICN4_IFACE_OUTPUT_NEXT_UDP4_ENCAP,
HICN4_IFACE_OUTPUT_NEXT_UDP6_ENCAP,
HICN4_IFACE_OUTPUT_N_NEXT,
} hicn4_iface_output_next_t;
/* Trace context struct */
typedef struct
{
u32 next_index;
u32 sw_if_index;
u8 pkt_type;
u8 packet_data[60];
} hicn6_iface_output_trace_t;
typedef enum
{
HICN6_IFACE_OUTPUT_NEXT_LOOKUP,
HICN6_IFACE_OUTPUT_NEXT_UDP4_ENCAP,
HICN6_IFACE_OUTPUT_NEXT_UDP6_ENCAP,
HICN6_IFACE_OUTPUT_N_NEXT,
} hicn6_iface_output_next_t;
//#define ERROR_OUTPUT_IP4 HICN4_IFACE_OUTPUT_NEXT_ERROR_DROP
//#define ERROR_OUTPUT_IP6 HICN6_IFACE_OUTPUT_NEXT_ERROR_DROP
#define NEXT_DATA_LOOKUP_IP4 HICN4_IFACE_OUTPUT_NEXT_LOOKUP
#define NEXT_DATA_LOOKUP_IP6 HICN6_IFACE_OUTPUT_NEXT_LOOKUP
#define NEXT_UDP_ENCAP_IP4 HICN4_IFACE_OUTPUT_NEXT_UDP4_ENCAP
#define NEXT_UDP_ENCAP_IP6 HICN6_IFACE_OUTPUT_NEXT_UDP6_ENCAP
#define HICN_REWRITE_DATA_IP4 hicn_rewrite_iface_data4
#define HICN_REWRITE_DATA_IP6 hicn_rewrite_iface_data6
#define TRACE_OUTPUT_PKT_IP4 hicn4_iface_output_trace_t
#define TRACE_OUTPUT_PKT_IP6 hicn6_iface_output_trace_t
// NODES IMPLEMENTATIONS
#define iface_input_x1(ipv) \
do \
{ \
vlib_buffer_t *b0; \
u32 bi0, next0, next_iface0; \
IP_HEADER_##ipv *ip_hdr = NULL; \
hicn_buffer_t *hicnb0; \
/* 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); \
\
stats.pkts_interest_count += 1; \
\
u8 is_icmp = ip_hdr->protocol == IPPROTO_ICMPV##ipv; \
\
next0 = \
is_icmp * NEXT_MAPME_IP##ipv + (1 - is_icmp) * NEXT_INTEREST_IP##ipv; \
\
next_iface0 = NEXT_DATA_LOOKUP_IP##ipv; \
\
if (hicnb0->flags & HICN_BUFFER_FLAGS_FROM_UDP4_TUNNEL) \
next_iface0 = NEXT_UDP_ENCAP_IP4; \
else if (hicnb0->flags & HICN_BUFFER_FLAGS_FROM_UDP6_TUNNEL) \
next_iface0 = NEXT_UDP_ENCAP_IP6; \
\
DPO_ADD_LOCK_IFACE_IP##ipv ( \
&(hicnb0->face_id), &hicnb0->flags, &(ip_hdr->src_address), \
vnet_buffer (b0)->sw_if_index[VLIB_RX], \
vnet_buffer (b0)->ip.adj_index[VLIB_RX], next_iface0); \
\
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)); \
} \
\
vlib_increment_combined_counter ( \
&counters[hicnb0->face_id * HICN_N_COUNTER], thread_index, \
HICN_FACE_COUNTERS_INTEREST_RX, 1, \
vlib_buffer_length_in_chain (vm, b0)); \
\
/* 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 iface_input_x2(ipv) \
do \
{ \
vlib_buffer_t *b0, *b1; \
u32 bi0, bi1, next0, next1, next_iface0, next_iface1; \
IP_HEADER_##ipv *ip_hdr0 = NULL; \
IP_HEADER_##ipv *ip_hdr1 = NULL; \
hicn_buffer_t *hicnb0, *hicnb1; \
\
/* 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); \
\
stats.pkts_interest_count += 2; \
\
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_INTEREST_IP##ipv; \
\
next1 = is_icmp1 * NEXT_MAPME_IP##ipv + \
(1 - is_icmp1) * NEXT_INTEREST_IP##ipv; \
\
next_iface0 = NEXT_DATA_LOOKUP_IP##ipv; \
\
if (hicnb0->flags & HICN_BUFFER_FLAGS_FROM_UDP4_TUNNEL) \
next_iface0 = NEXT_UDP_ENCAP_IP4; \
else if (hicnb0->flags & HICN_BUFFER_FLAGS_FROM_UDP6_TUNNEL) \
next_iface0 = NEXT_UDP_ENCAP_IP6; \
\
next_iface1 = NEXT_DATA_LOOKUP_IP##ipv; \
\
if (hicnb1->flags & HICN_BUFFER_FLAGS_FROM_UDP4_TUNNEL) \
next_iface1 = NEXT_UDP_ENCAP_IP4; \
else if (hicnb1->flags & HICN_BUFFER_FLAGS_FROM_UDP6_TUNNEL) \
next_iface1 = NEXT_UDP_ENCAP_IP6; \
\
DPO_ADD_LOCK_IFACE_IP##ipv ( \
&(hicnb0->face_id), &hicnb0->flags, &(ip_hdr0->src_address), \
vnet_buffer (b0)->sw_if_index[VLIB_RX], \
vnet_buffer (b0)->ip.adj_index[VLIB_RX], next_iface0); \
\
DPO_ADD_LOCK_IFACE_IP##ipv ( \
&(hicnb1->face_id), &hicnb1->flags, &(ip_hdr1->src_address), \
vnet_buffer (b1)->sw_if_index[VLIB_RX], \
vnet_buffer (b1)->ip.adj_index[VLIB_RX], next_iface1); \
\
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)); \
} \
\
vlib_increment_combined_counter ( \
&counters[hicnb0->face_id * HICN_N_COUNTER], thread_index, \
HICN_FACE_COUNTERS_INTEREST_RX, 1, \
vlib_buffer_length_in_chain (vm, b0)); \
\
vlib_increment_combined_counter ( \
&counters[hicnb1->face_id * HICN_N_COUNTER], thread_index, \
HICN_FACE_COUNTERS_INTEREST_RX, 1, \
vlib_buffer_length_in_chain (vm, b1)); \
\
/* 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_iface_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)
{
iface_input_x2 (4);
}
/* Dual loop, X1 */
while (n_left_from > 0 && n_left_to_next > 0)
{
iface_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_INTERESTS,
stats.pkts_interest_count);
return (frame->n_vectors);
}
/* packet trace format function */
static u8 *
hicn4_iface_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_iface_input_trace_t *t = va_arg (*args, hicn4_iface_input_trace_t *);
s = format (s, "IFACE_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_iface_input_node) =
{
.function = hicn4_iface_input_node_fn,
.name = "hicn4-iface-input",
.vector_size = sizeof (u32),
.format_trace = hicn4_iface_input_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn4_iface_input_error_strings),
.error_strings = hicn4_iface_input_error_strings,
.n_next_nodes = HICN4_IFACE_INPUT_N_NEXT,
/* edit / add dispositions*/
.next_nodes =
{
[HICN4_IFACE_INPUT_NEXT_INTEREST] = "hicn-interest-pcslookup",
[HICN4_IFACE_INPUT_NEXT_MAPME] = "hicn-mapme-ctrl",
[HICN4_IFACE_INPUT_NEXT_ERROR_DROP] = "error-drop",
},
};
static uword
hicn6_iface_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)
{
iface_input_x2 (6);
}
/* Dual loop, X1 */
while (n_left_from > 0 && n_left_to_next > 0)
{
iface_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_INTERESTS,
stats.pkts_interest_count);
return (frame->n_vectors);
}
/* packet trace format function */
static u8 *
hicn6_iface_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_iface_input_trace_t *t = va_arg (*args, hicn6_iface_input_trace_t *);
s = format (s, "IFACE_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_iface_input_node) =
{
.function = hicn6_iface_input_node_fn,
.name = "hicn6-iface-input",
.vector_size = sizeof (u32),
.format_trace = hicn6_iface_input_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn6_iface_input_error_strings),
.error_strings = hicn6_iface_input_error_strings,
.n_next_nodes = HICN6_IFACE_INPUT_N_NEXT,
/* edit / add dispositions*/
.next_nodes =
{
[HICN6_IFACE_INPUT_NEXT_INTEREST] = "hicn-interest-pcslookup",
[HICN6_IFACE_INPUT_NEXT_MAPME] = "hicn-mapme-ctrl",
[HICN6_IFACE_INPUT_NEXT_ERROR_DROP] = "error-drop",
},
};
/**** IFACE OUTPUT *****/
static inline void
hicn_rewrite_iface_data4 (vlib_main_t *vm, vlib_buffer_t *b0,
const hicn_face_t *iface, u32 *next)
{
ip4_header_t *ip0;
/* Get the pointer to the old ip and tcp header */
ip0 = vlib_buffer_get_current (b0);
/* Set up the ip6 header */
/* IP4 lenght contains the size of the ip4 header too */
u16 sval = (vlib_buffer_length_in_chain (vm, b0));
ip0->length = clib_host_to_net_u16 (sval);
ip0->ttl = 254; // FIXME TTL
vnet_buffer (b0)->ip.adj_index[VLIB_TX] = iface->dpo.dpoi_index;
*next = iface->dpo.dpoi_next_node;
hicn_header_t *hicn = vlib_buffer_get_current (b0);
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_data (
type, &hicn->protocol, &(iface->nat_addr), &(temp_addr), iface->pl_id);
if (ret == HICN_LIB_ERROR_REWRITE_CKSUM_REQUIRED)
{
ensure_offload_flags (b0, 1 /* is_v4 */);
}
}
static inline void
hicn_rewrite_iface_data6 (vlib_main_t *vm, vlib_buffer_t *b0,
const hicn_face_t *iface, u32 *next)
{
ip6_header_t *ip0;
/* Get the pointer to the old ip and tcp header */
/* Copy the previous ip and tcp header to the new portion of memory */
ip0 = vlib_buffer_get_current (b0);
/* Set up the ip6 header */
/* IP6 lenght does not include the size of the ip6 header */
u16 sval = (vlib_buffer_length_in_chain (vm, b0) - (sizeof (ip6_header_t)));
ip0->payload_length = clib_host_to_net_u16 (sval);
ip0->hop_limit = HICN_IP6_HOP_LIMIT;
vnet_buffer (b0)->ip.adj_index[VLIB_TX] = iface->dpo.dpoi_index;
*next = iface->dpo.dpoi_next_node;
hicn_header_t *hicn = vlib_buffer_get_current (b0);
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_data (
type, &hicn->protocol, &(iface->nat_addr), &(temp_addr), iface->pl_id);
if (ret == HICN_LIB_ERROR_REWRITE_CKSUM_REQUIRED)
{
ensure_offload_flags (b0, 0 /* is_v4 */);
}
}
#define iface_output_x1(ipv) \
do \
{ \
vlib_buffer_t *b0; \
u32 bi0; \
u32 next0 = next_index; \
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_REWRITE_DATA_IP##ipv (vm, b0, face, &next0); \
stats.pkts_data_count += 1; \
vlib_increment_combined_counter ( \
&counters[face_id * HICN_N_COUNTER], thread_index, \
HICN_FACE_COUNTERS_DATA_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 iface_output_x2(ipv) \
do \
{ \
vlib_buffer_t *b0, *b1; \
u32 bi0, bi1; \
u32 next0 = next_index; \
u32 next1 = next_index; \
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_REWRITE_DATA_IP##ipv (vm, b0, face0, &next0); \
stats.pkts_data_count += 1; \
vlib_increment_combined_counter ( \
&counters[face_id0 * HICN_N_COUNTER], thread_index, \
HICN_FACE_COUNTERS_DATA_TX, 1, \
vlib_buffer_length_in_chain (vm, b0)); \
} \
\
if (PREDICT_TRUE (face1 != NULL)) \
{ \
HICN_REWRITE_DATA_IP##ipv (vm, b1, face1, &next1); \
stats.pkts_data_count += 1; \
vlib_increment_combined_counter ( \
&counters[face_id1 * HICN_N_COUNTER], thread_index, \
HICN_FACE_COUNTERS_DATA_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_iface_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);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
iface_output_x2 (4);
}
while (n_left_from > 0 && n_left_to_next > 0)
{
iface_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_DATAS,
stats.pkts_data_count);
return (frame->n_vectors);
}
/* packet trace format function */
static u8 *
hicn4_iface_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_iface_output_trace_t *t = va_arg (*args, hicn4_iface_output_trace_t *);
s =
format (s, "IFACE_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_iface_output_node) = {
.function = hicn4_iface_output_node_fn,
.name = "hicn4-iface-output",
.vector_size = sizeof (u32),
.format_trace = hicn4_iface_output_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn4_iface_output_error_strings),
.error_strings = hicn4_iface_output_error_strings,
.n_next_nodes = HICN4_IFACE_OUTPUT_N_NEXT,
/* edit / add dispositions here */
.next_nodes = { [HICN4_IFACE_OUTPUT_NEXT_LOOKUP] = "ip4-lookup",
[HICN4_IFACE_OUTPUT_NEXT_UDP4_ENCAP] = "udp4-encap",
[HICN4_IFACE_OUTPUT_NEXT_UDP6_ENCAP] = "udp6-encap" },
};
static uword
hicn6_iface_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);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
iface_output_x2 (6);
}
while (n_left_from > 0 && n_left_to_next > 0)
{
iface_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_DATAS,
stats.pkts_data_count);
return (frame->n_vectors);
}
/* packet trace format function */
static u8 *
hicn6_iface_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_iface_output_trace_t *t = va_arg (*args, hicn6_iface_output_trace_t *);
s =
format (s, "IFACE_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_iface_output_node) = {
.function = hicn6_iface_output_node_fn,
.name = "hicn6-iface-output",
.vector_size = sizeof (u32),
.format_trace = hicn6_iface_output_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn6_iface_output_error_strings),
.error_strings = hicn6_iface_output_error_strings,
.n_next_nodes = HICN6_IFACE_OUTPUT_N_NEXT,
/* edit / add dispositions here */
.next_nodes = { [HICN6_IFACE_OUTPUT_NEXT_LOOKUP] = "ip6-lookup",
[HICN6_IFACE_OUTPUT_NEXT_UDP4_ENCAP] = "udp4-encap",
[HICN6_IFACE_OUTPUT_NEXT_UDP6_ENCAP] = "udp6-encap"
},
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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