Line data Source code
1 : /*
2 : * Copyright (c) 2015 Cisco and/or its affiliates.
3 : * Licensed under the Apache License, Version 2.0 (the "License");
4 : * you may not use this file except in compliance with the License.
5 : * You may obtain a copy of the License at:
6 : *
7 : * http://www.apache.org/licenses/LICENSE-2.0
8 : *
9 : * Unless required by applicable law or agreed to in writing, software
10 : * distributed under the License is distributed on an "AS IS" BASIS,
11 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 : * See the License for the specific language governing permissions and
13 : * limitations under the License.
14 : */
15 :
16 : #include <vnet/vnet.h>
17 : #include <vnet/devices/devices.h>
18 : #include <vnet/feature/feature.h>
19 : #include <vnet/ip/ip.h>
20 : #include <vnet/ethernet/ethernet.h>
21 : #include <vlib/stats/stats.h>
22 :
23 : vnet_device_main_t vnet_device_main;
24 :
25 : static uword
26 0 : device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
27 : vlib_frame_t * frame)
28 : {
29 0 : return 0;
30 : }
31 :
32 : /* *INDENT-OFF* */
33 178120 : VLIB_REGISTER_NODE (device_input_node) = {
34 : .function = device_input_fn,
35 : .name = "device-input",
36 : .runtime_data_bytes = sizeof (vnet_hw_if_rx_node_runtime_t),
37 : .type = VLIB_NODE_TYPE_INPUT,
38 : .state = VLIB_NODE_STATE_DISABLED,
39 : .n_next_nodes = VNET_DEVICE_INPUT_N_NEXT_NODES,
40 : .next_nodes = VNET_DEVICE_INPUT_NEXT_NODES,
41 : };
42 :
43 : /* Table defines how much we need to advance current data pointer
44 : in the buffer if we shortcut to l3 nodes */
45 :
46 : const u32 __attribute__((aligned (CLIB_CACHE_LINE_BYTES)))
47 : device_input_next_node_advance[((VNET_DEVICE_INPUT_N_NEXT_NODES /
48 : CLIB_CACHE_LINE_BYTES) +1) * CLIB_CACHE_LINE_BYTES] =
49 : {
50 : [VNET_DEVICE_INPUT_NEXT_IP4_INPUT] = sizeof (ethernet_header_t),
51 : [VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT] = sizeof (ethernet_header_t),
52 : [VNET_DEVICE_INPUT_NEXT_IP6_INPUT] = sizeof (ethernet_header_t),
53 : [VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = sizeof (ethernet_header_t),
54 : };
55 :
56 : const u32 __attribute__((aligned (CLIB_CACHE_LINE_BYTES)))
57 : device_input_next_node_flags[((VNET_DEVICE_INPUT_N_NEXT_NODES /
58 : CLIB_CACHE_LINE_BYTES) +1) * CLIB_CACHE_LINE_BYTES] =
59 : {
60 : [VNET_DEVICE_INPUT_NEXT_IP4_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
61 : [VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
62 : [VNET_DEVICE_INPUT_NEXT_IP6_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
63 : [VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
64 : };
65 :
66 1119 : VNET_FEATURE_ARC_INIT (device_input, static) =
67 : {
68 : .arc_name = "device-input",
69 : .start_nodes = VNET_FEATURES ("device-input"),
70 : .last_in_arc = "ethernet-input",
71 : .arc_index_ptr = &feature_main.device_input_feature_arc_index,
72 : };
73 :
74 70583 : VNET_FEATURE_INIT (l2_patch, static) = {
75 : .arc_name = "device-input",
76 : .node_name = "l2-patch",
77 : .runs_before = VNET_FEATURES ("ethernet-input"),
78 : };
79 :
80 70583 : VNET_FEATURE_INIT (worker_handoff, static) = {
81 : .arc_name = "device-input",
82 : .node_name = "worker-handoff",
83 : .runs_before = VNET_FEATURES ("ethernet-input"),
84 : };
85 :
86 70583 : VNET_FEATURE_INIT (span_input, static) = {
87 : .arc_name = "device-input",
88 : .node_name = "span-input",
89 : .runs_before = VNET_FEATURES ("ethernet-input"),
90 : };
91 :
92 70583 : VNET_FEATURE_INIT (p2p_ethernet_node, static) = {
93 : .arc_name = "device-input",
94 : .node_name = "p2p-ethernet-input",
95 : .runs_before = VNET_FEATURES ("ethernet-input"),
96 : };
97 :
98 70583 : VNET_FEATURE_INIT (ethernet_input, static) = {
99 : .arc_name = "device-input",
100 : .node_name = "ethernet-input",
101 : .runs_before = 0, /* not before any other features */
102 : };
103 : /* *INDENT-ON* */
104 :
105 : static void
106 1203 : input_rate_collector_fn (vlib_stats_collector_data_t *d)
107 : {
108 1203 : vlib_stats_segment_t *sm = vlib_stats_get_segment ();
109 1203 : vlib_stats_entry_t *e2 = sm->directory_vector + d->private_data;
110 : static u64 last_input_packets = 0;
111 : f64 dt, now;
112 :
113 1203 : now = vlib_time_now (vlib_get_main ());
114 1203 : u64 input_packets = vnet_get_aggregate_rx_packets ();
115 :
116 1203 : dt = now - e2->value;
117 1203 : d->entry->value = (f64) (input_packets - last_input_packets) / dt;
118 1203 : last_input_packets = input_packets;
119 1203 : e2->value = now;
120 1203 : }
121 :
122 : static clib_error_t *
123 559 : vnet_device_init (vlib_main_t * vm)
124 : {
125 559 : vnet_device_main_t *vdm = &vnet_device_main;
126 559 : vlib_thread_main_t *tm = vlib_get_thread_main ();
127 : vlib_thread_registration_t *tr;
128 559 : vlib_stats_collector_reg_t reg = {};
129 : uword *p;
130 :
131 559 : vec_validate_aligned (vdm->workers, tm->n_vlib_mains - 1,
132 : CLIB_CACHE_LINE_BYTES);
133 :
134 559 : p = hash_get_mem (tm->thread_registrations_by_name, "workers");
135 559 : tr = p ? (vlib_thread_registration_t *) p[0] : 0;
136 559 : if (tr && tr->count > 0)
137 : {
138 36 : vdm->first_worker_thread_index = tr->first_index;
139 36 : vdm->next_worker_thread_index = tr->first_index;
140 36 : vdm->last_worker_thread_index = tr->first_index + tr->count - 1;
141 : }
142 :
143 559 : reg.private_data = vlib_stats_add_timestamp ("/sys/last_update");
144 559 : reg.entry_index = vlib_stats_add_gauge ("/sys/input_rate");
145 559 : reg.collect_fn = input_rate_collector_fn;
146 559 : vlib_stats_register_collector_fn (®);
147 :
148 559 : return 0;
149 : }
150 :
151 8959 : VLIB_INIT_FUNCTION (vnet_device_init);
152 :
153 : /*
154 : * fd.io coding-style-patch-verification: ON
155 : *
156 : * Local Variables:
157 : * eval: (c-set-style "gnu")
158 : * End:
159 : */
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