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
|
/*
* 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.
*/
#ifndef __POLICE_INLINES_H__
#define __POLICE_INLINES_H__
#include <vnet/policer/police.h>
#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#define IP4_NON_DSCP_BITS 0x03
#define IP4_DSCP_SHIFT 2
#define IP6_NON_DSCP_BITS 0xf03fffff
#define IP6_DSCP_SHIFT 22
static_always_inline void
vnet_policer_mark (vlib_buffer_t * b, u8 dscp)
{
ethernet_header_t *eh;
ip4_header_t *ip4h;
ip6_header_t *ip6h;
u16 type;
eh = (ethernet_header_t *) b->data;
type = clib_net_to_host_u16 (eh->type);
if (PREDICT_TRUE (type == ETHERNET_TYPE_IP4))
{
ip4h = (ip4_header_t *) & (b->data[sizeof (ethernet_header_t)]);;
ip4h->tos &= IP4_NON_DSCP_BITS;
ip4h->tos |= dscp << IP4_DSCP_SHIFT;
ip4h->checksum = ip4_header_checksum (ip4h);
}
else
{
if (PREDICT_TRUE (type == ETHERNET_TYPE_IP6))
{
ip6h = (ip6_header_t *) & (b->data[sizeof (ethernet_header_t)]);
ip6h->ip_version_traffic_class_and_flow_label &=
clib_host_to_net_u32 (IP6_NON_DSCP_BITS);
ip6h->ip_version_traffic_class_and_flow_label |=
clib_host_to_net_u32 (dscp << IP6_DSCP_SHIFT);
}
}
}
static_always_inline u8
vnet_policer_police (vlib_main_t * vm,
vlib_buffer_t * b,
u32 policer_index,
u64 time_in_policer_periods,
policer_result_e packet_color)
{
u8 act;
u32 len;
u32 col;
policer_read_response_type_st *pol;
vnet_policer_main_t *pm = &vnet_policer_main;
len = vlib_buffer_length_in_chain (vm, b);
pol = &pm->policers[policer_index];
col = vnet_police_packet (pol, len, packet_color, time_in_policer_periods);
act = pol->action[col];
if (PREDICT_TRUE (act == SSE2_QOS_ACTION_MARK_AND_TRANSMIT))
vnet_policer_mark (b, pol->mark_dscp[col]);
return act;
}
#endif // __POLICE_INLINES_H__
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
