1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* Copyright (c) 2015 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/vnet.h>
#include <vnet/devices/devices.h>
#include <vnet/feature/feature.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <vlib/stats/stats.h>
vnet_device_main_t vnet_device_main;
static uword
device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return 0;
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (device_input_node) = {
.function = device_input_fn,
.name = "device-input",
.runtime_data_bytes = sizeof (vnet_hw_if_rx_node_runtime_t),
.type = VLIB_NODE_TYPE_INPUT,
.state = VLIB_NODE_STATE_DISABLED,
.n_next_nodes = VNET_DEVICE_INPUT_N_NEXT_NODES,
.next_nodes = VNET_DEVICE_INPUT_NEXT_NODES,
};
/* Table defines how much we need to advance current data pointer
in the buffer if we shortcut to l3 nodes */
const u32 __attribute__((aligned (CLIB_CACHE_LINE_BYTES)))
device_input_next_node_advance[((VNET_DEVICE_INPUT_N_NEXT_NODES /
CLIB_CACHE_LINE_BYTES) +1) * CLIB_CACHE_LINE_BYTES] =
{
[VNET_DEVICE_INPUT_NEXT_IP4_INPUT] = sizeof (ethernet_header_t),
[VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT] = sizeof (ethernet_header_t),
[VNET_DEVICE_INPUT_NEXT_IP6_INPUT] = sizeof (ethernet_header_t),
[VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = sizeof (ethernet_header_t),
};
const u32 __attribute__((aligned (CLIB_CACHE_LINE_BYTES)))
device_input_next_node_flags[((VNET_DEVICE_INPUT_N_NEXT_NODES /
CLIB_CACHE_LINE_BYTES) +1) * CLIB_CACHE_LINE_BYTES] =
{
[VNET_DEVICE_INPUT_NEXT_IP4_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
[VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
[VNET_DEVICE_INPUT_NEXT_IP6_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
[VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
};
VNET_FEATURE_ARC_INIT (device_input, static) =
{
.arc_name = "device-input",
.start_nodes = VNET_FEATURES ("device-input"),
.last_in_arc = "ethernet-input",
.arc_index_ptr = &feature_main.device_input_feature_arc_index,
};
VNET_FEATURE_INIT (l2_patch, static) = {
.arc_name = "device-input",
.node_name = "l2-patch",
.runs_before = VNET_FEATURES ("ethernet-input"),
};
VNET_FEATURE_INIT (worker_handoff, static) = {
.arc_name = "device-input",
.node_name = "worker-handoff",
.runs_before = VNET_FEATURES ("ethernet-input"),
};
VNET_FEATURE_INIT (span_input, static) = {
.arc_name = "device-input",
.node_name = "span-input",
.runs_before = VNET_FEATURES ("ethernet-input"),
};
VNET_FEATURE_INIT (p2p_ethernet_node, static) = {
.arc_name = "device-input",
.node_name = "p2p-ethernet-input",
.runs_before = VNET_FEATURES ("ethernet-input"),
};
VNET_FEATURE_INIT (ethernet_input, static) = {
.arc_name = "device-input",
.node_name = "ethernet-input",
.runs_before = 0, /* not before any other features */
};
/* *INDENT-ON* */
static void
input_rate_collector_fn (vlib_stats_collector_data_t *d)
{
vlib_stats_segment_t *sm = vlib_stats_get_segment ();
vlib_stats_entry_t *e2 = sm->directory_vector + d->private_data;
static u64 last_input_packets = 0;
f64 dt, now;
now = vlib_time_now (vlib_get_main ());
u64 input_packets = vnet_get_aggregate_rx_packets ();
dt = now - e2->value;
d->entry->value = (f64) (input_packets - last_input_packets) / dt;
last_input_packets = input_packets;
e2->value = now;
}
static clib_error_t *
vnet_device_init (vlib_main_t * vm)
{
vnet_device_main_t *vdm = &vnet_device_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
vlib_thread_registration_t *tr;
vlib_stats_collector_reg_t reg = {};
uword *p;
vec_validate_aligned (vdm->workers, tm->n_vlib_mains - 1,
CLIB_CACHE_LINE_BYTES);
p = hash_get_mem (tm->thread_registrations_by_name, "workers");
tr = p ? (vlib_thread_registration_t *) p[0] : 0;
if (tr && tr->count > 0)
{
vdm->first_worker_thread_index = tr->first_index;
vdm->next_worker_thread_index = tr->first_index;
vdm->last_worker_thread_index = tr->first_index + tr->count - 1;
}
reg.private_data = vlib_stats_add_timestamp ("/sys/last_update");
reg.entry_index = vlib_stats_add_gauge ("/sys/input_rate");
reg.collect_fn = input_rate_collector_fn;
vlib_stats_register_collector_fn (®);
return 0;
}
VLIB_INIT_FUNCTION (vnet_device_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
