# Copyright (c) 2020 Cisco and/or its affiliates.
#
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
#
# Licensed under the Apache License 2.0 or
# GNU General Public License v2.0 or later; you may not use this file
# except in compliance with one of these Licenses. You
# may obtain a copy of the Licenses at:
#
# http://www.apache.org/licenses/LICENSE-2.0
# https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
#
# Note: If this file is linked with Scapy, which is GPLv2+, your use of it
# must be under GPLv2+. If at any point in the future it is no longer linked
# with Scapy (or other GPLv2+ licensed software), you are free to choose Apache 2.
#
# 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.
"""Stream profile for T-rex traffic generator.
Stream profile:
- Two streams sent in directions 0 --> 1 and 1 --> 0 at the same time.
- Packet: ETH / IP /
- Direction 0 --> 1:
- Source IP address range: 10.0.0.1
- Destination IP address range: 20.0.0.0 - 20.0.3.231
- Direction 1 --> 0:
- Source IP address range: 20.0.0.1
- Destination IP address range: 10.0.0.0 - 10.0.3.231
"""
from trex.stl.api import *
from profile_trex_stateless_base_class import TrafficStreamsBaseClass
class TrafficStreams(TrafficStreamsBaseClass):
"""Stream profile."""
def __init__(self):
"""Initialization and setting of streams' parameters."""
super(TrafficStreamsBaseClass, self).__init__()
self.p1_dst_start_mac = u"02:02:00:00:12:00"
self.p2_dst_start_mac = u"02:02:00:00:02:00"
# IPs used in packet headers.
self.p1_src_start_ip = u"10.0.0.1"
self.p1_dst_start_ip = u"20.0.0.0"
self.p1_dst_end_ip = u"20.0.3.231"
self.p2_src_start_ip = u"20.0.0.1"
self.p2_dst_start_ip = u"10.0.0.0"
self.p2_dst_end_ip = u"10.0.3.231"
def define_packets(self):
"""Defines the packets to be sent from the traffic generator.
Packet definition: | ETH | IP |
:returns: Packets to be sent from the traffic generator.
:rtype: tuple
"""
# Direction 0 --> 1
base_pkt_a = (
Ether(
dst=self.p1_dst_start_mac
) /
IP(
src=self.p1_src_start_ip,
dst=self.p1_dst_start_ip,
proto=61
)
)
# Direction 1 --> 0
base_pkt_b = (
Ether(
dst=self.p2_dst_start_mac
) /
IP(
src=self.p2_src_start_ip,
dst=self.p2_dst_start_ip,
proto=61
)
)
# Direction 0 --> 1
vm1 = STLScVmRaw(
[
STLVmFlowVar(
name=u"mac_dst",
min_value=0,
max_value=0,
size=1,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"mac_dst",
pkt_offset=5
),
STLVmFlowVar(
name=u"dst",
min_value=self.p1_dst_start_ip,
max_value=self.p1_dst_end_ip,
size=4,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"dst",
pkt_offset=u"IP.dst"
),
STLVmFixIpv4(
offset=u"IP"
)
]
)
# Direction 1 --> 0
vm2 = STLScVmRaw(
[
STLVmFlowVar(
name=u"mac_dst",
min_value=0,
max_value=0,
size=1,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"mac_dst",
pkt_offset=5
),
STLVmFlowVar(
name=u"dst",
min_value=self.p2_dst_start_ip,
max_value=self.p2_dst_end_ip,
size=4,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"dst",
pkt_offset=u"IP.dst"
),
STLVmFixIpv4(
offset=u"IP"
)
]
)
return base_pkt_a, base_pkt_b, vm1, vm2
def register():
"""Register this/*
* 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 <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/ip/ip_packet.h>
#include "face_udp.h"
#include "face_udp_node.h"
#include "dpo_udp.h"
#include "../face.h"
#include "../../strategy.h"
#include "../../strategy_dpo_manager.h"
#include "../../hicn.h"
/**
* @File
*
* Definition of the nodes for udp faces.
*/
vlib_node_registration_t hicn_face_udp4_input_node;
vlib_node_registration_t hicn_face_udp6_input_node;
vlib_node_registration_t hicn_face_udp4_output_node;
vlib_node_registration_t hicn_face_udp6_output_node;
static char *hicn_face_udp4_input_error_strings[] = {
#define _(sym, string) string,
foreach_hicnfwd_error
#undef _
};
static char *hicn_face_udp6_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_udp4_input_trace_t;
typedef enum
{
HICN_FACE_UDP4_INPUT_NEXT_DATA,
HICN_FACE_UDP4_INPUT_NEXT_MAPME,
HICN_FACE_UDP4_INPUT_NEXT_ERROR_DROP,
HICN_FACE_UDP4_INPUT_N_NEXT,
} hicn_face_udp4_input_next_t;
/* Trace context struct */
typedef struct
{
u32 next_index;
u32 sw_if_index;
u8 pkt_type;
u8 packet_data[60];
}
hicn_face_udp6_input_trace_t;
typedef enum
{
HICN_FACE_UDP6_INPUT_NEXT_DATA,
HICN_FACE_UDP6_INPUT_NEXT_MAPME,
HICN_FACE_UDP6_INPUT_NEXT_ERROR_DROP,
HICN_FACE_UDP6_INPUT_N_NEXT,
} hicn_face_udp6_input_next_t;
#define ERROR_INPUT_UDP4 HICN_FACE_UDP4_INPUT_NEXT_ERROR_DROP
#define ERROR_INPUT_UDP6 HICN_FACE_UDP6_INPUT_NEXT_ERROR_DROP
#define NEXT_MAPME_UDP4 HICN_FACE_UDP4_INPUT_NEXT_MAPME
#define NEXT_MAPME_UDP6 HICN_FACE_UDP6_INPUT_NEXT_MAPME
#define NEXT_DATA_UDP4 HICN_FACE_UDP4_INPUT_NEXT_DATA
#define NEXT_DATA_UDP6 HICN_FACE_UDP6_INPUT_NEXT_DATA
#define IP_HEADER_4 ip4_header_t
#define IP_HEADER_6 ip6_header_t
#define HICN_DPO_UDP_LOCK_IP4 hicn_dpo_udp4_lock
#define HICN_DPO_UDP_LOCK_IP6 hicn_dpo_udp6_lock
#define TRACE_INPUT_PKT_UDP4 hicn_face_udp4_input_trace_t
#define TRACE_INPUT_PKT_UDP6 hicn_face_udp6_input_trace_t
#define SIZE_HICN_HEADER4 sizeof(ip4_header_t) + sizeof(udp_header_t)
#define SIZE_HICN_HEADER6 sizeof(ip6_header_t) + sizeof(udp_header_t)
#define face_input_x1(ipv) \
do { \
int ret; \
vlib_buffer_t *b0; \
u32 bi0; \
u32 next0 = ERROR_INPUT_UDP##ipv; \
IP_HEADER_##ipv * ip_hdr = NULL; \
u8 * inner_ip_hdr = NULL; \
udp_header_t * udp_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, 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); \
ip_hdr = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
udp_hdr = (udp_header_t *) (ip_hdr + 1); \
hicnb0 = hicn_get_buffer(b0); \
\
inner_ip_hdr = (u8 *)(udp_hdr + 1); \
u8 is_v6 = hicn_is_v6((hicn_header_t *)inner_ip_hdr); \
u8 is_icmp = is_v6*(inner_ip_hdr[6] == IPPROTO_ICMPV6) + \
(1 - is_v6)*(inner_ip_hdr[9] == IPPROTO_ICMPV4); \
\
ret = HICN_DPO_UDP_LOCK_IP##ipv \
(&(hicnb0->face_dpo_id), \
&(ip_hdr->dst_address), \
&(ip_hdr->src_address), \
(udp_hdr->dst_port), \
(udp_hdr->src_port), \
&hicnb0->flags); \
\
if ( PREDICT_FALSE(ret != HICN_ERROR_NONE) ) \
{ \
next0 = ERROR_INPUT_UDP##ipv; \
} \
else \
{ \
next0 = is_icmp*NEXT_MAPME_UDP##ipv + \
(1-is_icmp)*NEXT_DATA_UDP##ipv; \
stats.pkts_data_count += 1; \
\
vlib_buffer_advance(b0, sizeof(IP_HEADER_##ipv) + \
sizeof(udp_header_t)); \
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)); \
} \
\
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
(b0->flags & VLIB_BUFFER_IS_TRACED))) \
{ \
TRACE_INPUT_PKT_UDP##ipv *t = \
vlib_add_trace (vm, node, b0, sizeof (*t)); \
t->pkt_type = HICN_PKT_TYPE_CONTENT; \
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 { \
int ret0, ret1; \
vlib_buffer_t *b0, *b1; \
u32 bi0, bi1; \
u32 next0 = ERROR_INPUT_UDP##ipv; \
u32 next1 = ERROR_INPUT_UDP##ipv; \
IP_HEADER_##ipv * ip_hdr0 = NULL; \
IP_HEADER_##ipv * ip_hdr1 = NULL; \
u8 * inner_ip_hdr0 = NULL; \
u8 * inner_ip_hdr1 = NULL; \
udp_header_t * udp_hdr0 = NULL; \
udp_header_t * udp_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, CLIB_CACHE_LINE_BYTES, STORE); \
CLIB_PREFETCH (b3, 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); \
ip_hdr0 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
ip_hdr1 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b1); \
udp_hdr0 = (udp_header_t *) (ip_hdr0 + 1); \
udp_hdr1 = (udp_header_t *) (ip_hdr1 + 1); \
hicnb0 = hicn_get_buffer(b0); \
hicnb1 = hicn_get_buffer(b1); \
\
inner_ip_hdr0 = (u8 *)(udp_hdr0 + 1); \
u8 is_v6_0 = hicn_is_v6((hicn_header_t *)inner_ip_hdr0); \
u8 is_icmp0 = is_v6_0*(inner_ip_hdr0[6] == IPPROTO_ICMPV6) + \
(1 - is_v6_0)*(inner_ip_hdr0[9] == IPPROTO_ICMPV4); \
\
inner_ip_hdr1 = (u8 *)(udp_hdr1 + 1); \
u8 is_v6_1 = hicn_is_v6((hicn_header_t *)inner_ip_hdr1); \
u8 is_icmp1 = is_v6_1*(inner_ip_hdr1[6] == IPPROTO_ICMPV6) + \
(1 - is_v6_1)*(inner_ip_hdr1[9] == IPPROTO_ICMPV4); \
\
ret0 = HICN_DPO_UDP_LOCK_IP##ipv \
(&(hicnb0->face_dpo_id), \
&(ip_hdr0->dst_address), \
&(ip_hdr0->src_address), \
(udp_hdr0->dst_port), \
(udp_hdr0->src_port), \
&hicnb0->flags); \
\
ret1 = HICN_DPO_UDP_LOCK_IP##ipv \
(&(hicnb1->face_dpo_id), \
&(ip_hdr1->dst_address), \
&(ip_hdr1->src_address), \
(udp_hdr1->dst_port), \
(udp_hdr1->src_port), \
&hicnb1->flags); \
\
if ( PREDICT_FALSE(ret0 != HICN_ERROR_NONE) ) \
{ \
next0 = ERROR_INPUT_UDP##ipv; \
} \
else \
{ \
stats.pkts_data_count += 1; \
next0 = is_icmp0*NEXT_MAPME_UDP##ipv + \
(1-is_icmp0)*NEXT_DATA_UDP##ipv; \
\
vlib_buffer_advance(b0, sizeof(IP_HEADER_##ipv) + \
sizeof(udp_header_t)); \
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)); \
} \
\
if ( PREDICT_FALSE(ret1 != HICN_ERROR_NONE) ) \
{ \
next1 = ERROR_INPUT_UDP##ipv; \
} \
else \
{ \
stats.pkts_data_count += 1; \
next1 = is_icmp1*NEXT_MAPME_UDP##ipv + \
(1-is_icmp1)*NEXT_DATA_UDP##ipv; \
\
vlib_buffer_advance(b1, sizeof(IP_HEADER_##ipv) + \
sizeof(udp_header_t)); \
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)); \
} \
\
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
(b0->flags & VLIB_BUFFER_IS_TRACED))) \
{ \
TRACE_INPUT_PKT_UDP##ipv *t = \
vlib_add_trace (vm, node, b0, sizeof (*t)); \
t->pkt_type = HICN_PKT_TYPE_CONTENT; \
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_UDP##ipv *t = \
vlib_add_trace (vm, node, b1, sizeof (*t)); \
t->pkt_type = HICN_PKT_TYPE_CONTENT; \
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_udp4_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_udp4_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_udp4_input_trace_t *t =
va_arg (*args, hicn_face_udp4_input_trace_t *);
s =
format (s, "FACE_UDP4_INPUT: pkt: %d, sw_if_index %d, next index %d\n%U",
(int) t->pkt_type, t->sw_if_index, t->next_index,
(t->packet_data[0] & 0xf0) ==
0x40 ? format_ip4_header : 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_udp4_input_node) =
{
.function = hicn_face_udp4_input_node_fn,
.name = "hicn-face-udp4-input",
.vector_size = sizeof (u32),
.format_trace = hicn_face_udp4_input_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn_face_udp4_input_error_strings),
.error_strings = hicn_face_udp4_input_error_strings,
.n_next_nodes = HICN_FACE_UDP4_INPUT_N_NEXT,
/* edit / add dispositions here */
.next_nodes =
{
[HICN_FACE_UDP4_INPUT_NEXT_DATA] = "hicn-data-pcslookup",
[HICN_FACE_UDP4_INPUT_NEXT_MAPME] = "hicn-mapme-ack",
[HICN_FACE_UDP4_INPUT_NEXT_ERROR_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
static uword
hicn_face_udp6_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_PROCESSED, stats.pkts_processed);
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_udp6_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_udp6_input_trace_t *t =
va_arg (*args, hicn_face_udp6_input_trace_t *);
s =
format (s, "FACE_UDP6_INPUT: pkt: %d, sw_if_index %d, next index %d\n%U",
(int) t->pkt_type, t->sw_if_index, t->next_index,
(t->packet_data[0] & 0xf0) ==
0x40 ? format_ip4_header : 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_udp6_input_node) =
{
.function = hicn_face_udp6_input_node_fn,
.name = "hicn-face-udp6-input",
.vector_size = sizeof (u32),
.format_trace = hicn_face_udp6_input_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn_face_udp6_input_error_strings),
.error_strings = hicn_face_udp6_input_error_strings,
.n_next_nodes = HICN_FACE_UDP6_INPUT_N_NEXT,
/* edit / add dispositions here */
.next_nodes =
{
[HICN_FACE_UDP6_INPUT_NEXT_DATA] = "hicn-data-pcslookup",
[HICN_FACE_UDP6_INPUT_NEXT_MAPME] = "hicn-mapme-ack",
[HICN_FACE_UDP6_INPUT_NEXT_ERROR_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
/******* Face Output *******/
always_inline void
hicn_face_udp4_encap (vlib_main_t * vm,
vlib_buffer_t * outer_b0,
hicn_face_t * face, u32 * next)
{
u16 old_l0 = 0, new_l0;
ip_csum_t sum0;
ip4_header_t *ip0;
udp_header_t *udp0;
hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
/* ip */
ip0 = vlib_buffer_get_current (outer_b0);
clib_memcpy (ip0, &(face_udp->hdrs.ip4.ip), sizeof (ip4_header_t) +
sizeof (udp_header_t));
/* Fix UDP length */
udp0 = (udp_header_t *) (ip0 + 1);
new_l0 =
clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, outer_b0) -
sizeof (*ip0));
udp0->length = new_l0;
old_l0 = ip0->length;
ip0->length =
clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, outer_b0));
sum0 = ip0->checksum;
//old_l0 always 0, see the rewrite setup
new_l0 = ip0->length;
sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
length /* changed member */ );
ip0->checksum = sum0;
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;
ip46_address_t ip46 =
to_ip46 (0, (u8 *) & (face_udp->hdrs.ip4.ip.dst_address));
fib_prefix_from_ip46_addr (&ip46, &fib_pfx);
fib_pfx.fp_len = 32;
u32 fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
HICN_FIB_TABLE,
FIB_SOURCE_PRIORITY_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);
}
vnet_buffer (outer_b0)->ip.adj_index[VLIB_TX] = face->shared.adj;
*next = adj->lookup_next_index;
}
always_inline void
hicn_face_udp6_encap (vlib_main_t * vm,
vlib_buffer_t * outer_b0,
hicn_face_t * face, u32 * next)
{
int bogus0;
u16 new_l0;
ip6_header_t *ip0;
udp_header_t *udp0;
hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
/* ip */
ip0 = vlib_buffer_get_current (outer_b0);
clib_memcpy (ip0, &(face_udp->hdrs.ip6.ip), sizeof (ip6_header_t) +
sizeof (udp_header_t));
new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, outer_b0)
- sizeof (*ip0));
ip0->payload_length = new_l0;
/* Fix UDP length */
udp0 = (udp_header_t *) (ip0 + 1);
udp0->length = new_l0;
udp0->checksum =
ip6_tcp_udp_icmp_compute_checksum (vm, outer_b0, ip0, &bogus0);
ASSERT (bogus0 == 0);
if (udp0->checksum == 0)
udp0->checksum = 0xffff;
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;
ip46_address_t ip46 =
to_ip46 (1, (u8 *) & (face_udp->hdrs.ip6.ip.dst_address));
fib_prefix_from_ip46_addr (&ip46, &fib_pfx);
fib_pfx.fp_len = 128;
u32 fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
HICN_FIB_TABLE,
FIB_SOURCE_PRIORITY_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);
}
vnet_buffer (outer_b0)->ip.adj_index[VLIB_TX] = face->shared.adj;
*next = adj->lookup_next_index;
}
static char *hicn_face_udp4_output_error_strings[] = {
#define _(sym, string) string,
foreach_hicnfwd_error
#undef _
};
static char *hicn_face_udp6_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_udp4_output_trace_t;
/* Trace context struct */
typedef struct
{
u32 next_index;
u32 sw_if_index;
u8 pkt_type;
u8 packet_data[60];
}
hicn_face_udp6_output_trace_t;
#define HICN_FACE_UDP_ENCAP_IP4 hicn_face_udp4_encap
#define HICN_FACE_UDP_ENCAP_IP6 hicn_face_udp6_encap
#define TRACE_OUTPUT_PKT_UDP4 hicn_face_udp4_output_trace_t
#define TRACE_OUTPUT_PKT_UDP6 hicn_face_udp6_output_trace_t
#define IP_HEADER_4 ip4_header_t
#define IP_HEADER_6 ip6_header_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 , LOAD); \
} \
/* Dequeue a packet buffer */ \
bi0 = from[0]; \
from += 1; \
n_left_from -= 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)) \
{ \
/* Adjust vlib buffer. Create space for the udp tunnel. */ \
vlib_buffer_advance(b0, -(sizeof (IP_HEADER_##ipv) + \
sizeof (udp_header_t))); \
\
\
HICN_FACE_UDP_ENCAP_IP##ipv \
(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_UDP##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) + \
SIZE_HICN_HEADER##ipv, \
sizeof (t->packet_data)); \
} \
\
to_next[0] = bi0; \
to_next += 1; \
n_left_to_next -= 1; \
\
\
/* 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 , 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); \
\
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(vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
face1 = \
hicn_dpoi_get_from_idx(vnet_buffer (b1)->ip.adj_index[VLIB_TX]); \
\
if (PREDICT_TRUE(face0 != NULL)) \
{ \
/* Adjust vlib buffer. Create space for the udp tunnel. */ \
vlib_buffer_advance(b0, -(sizeof (IP_HEADER_##ipv) + \
sizeof (udp_header_t))); \
\
\
HICN_FACE_UDP_ENCAP_IP##ipv \
(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)) \
{ \
/* Adjust vlib buffer. Create space for the udp tunnel. */ \
vlib_buffer_advance(b1, -(sizeof (IP_HEADER_##ipv) + \
sizeof (udp_header_t))); \
\
\
HICN_FACE_UDP_ENCAP_IP##ipv \
(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_UDP##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) + \
SIZE_HICN_HEADER##ipv, \
sizeof (t->packet_data)); \
} \
\
\
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
(b1->flags & VLIB_BUFFER_IS_TRACED))) \
{ \
TRACE_OUTPUT_PKT_UDP##ipv *t = \
vlib_add_trace (vm, node, b0, 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) + \
SIZE_HICN_HEADER##ipv, \
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_udp4_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_udp4_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_udp4_output_trace_t *t =
va_arg (*args, hicn_face_udp4_output_trace_t *);
s =
format (s, "FACE_UDP4_OUTPUT: pkt: %d, sw_if_index %d, next index %d\n%U",
(int) t->pkt_type, t->sw_if_index, t->next_index,
(t->packet_data[0] & 0xf0) ==
0x40 ? format_ip4_header : format_ip6_header, t->packet_data,
sizeof (t->packet_data));
return (s);
}
/* *INDENT-OFF* */
/*
* Node registration for the interest forwarder node
*/
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (hicn_face_udp4_output_node) =
{
.function = hicn_face_udp4_output_node_fn,
.name = "hicn-face-udp4-output",
.vector_size = sizeof (u32),
.format_trace = hicn_face_udp4_output_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn_face_udp4_output_error_strings),
.error_strings = hicn_face_udp4_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* */
/* *INDENT-ON* */
static uword
hicn_face_udp6_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);
}
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_udp6_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_udp6_output_trace_t *t =
va_arg (*args, hicn_face_udp6_output_trace_t *);
s =
format (s, "FACE_UDP6_OUTPUT: pkt: %d, sw_if_index %d, next index %d\n%u",
(int) t->pkt_type, t->sw_if_index, t->next_index,
(t->packet_data[0] & 0xf0) ==
0x40 ? format_ip4_header : format_ip6_header, t->packet_data,
sizeof (t->packet_data));
return (s);
}
/* *INDENT-OFF* */
/*
* Node registration for the interest forwarder node
*/
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (hicn_face_udp6_output_node) =
{
.function = hicn_face_udp6_output_node_fn,
.name = "hicn-face-udp6-output",
.vector_size = sizeof (u32),
.format_trace = hicn_face_udp6_output_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn_face_udp6_output_error_strings),
.error_strings = hicn_face_udp6_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* */
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
