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
|
/*
* Copyright (c) 2016 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/lisp-cp/lisp_types.h>
#define IP_DF 0x4000 /* don't fragment */
void *
pkt_push_ip (vlib_main_t * vm, vlib_buffer_t *b, ip_address_t *src,
ip_address_t *dst, u32 proto);
void *
pkt_push_udp_and_ip (vlib_main_t * vm, vlib_buffer_t *b, u16 sp, u16 dp,
ip_address_t *sip, ip_address_t *dip);
void *
pkt_push_ecm_hdr (vlib_buffer_t *b);
always_inline u8 *
vlib_buffer_get_tail (vlib_buffer_t *b)
{
return b->data + b->current_data + b->current_length;
}
always_inline void *
vlib_buffer_put_uninit (vlib_buffer_t *b, u8 size)
{
/* XXX should make sure there's enough space! */
void * p = vlib_buffer_get_tail (b);
b->current_length += size;
return p;
}
always_inline void *
vlib_buffer_push_uninit (vlib_buffer_t *b, u8 size)
{
/* XXX should make sure there's enough space! */
ASSERT (b->current_data >= size);
b->current_data -= size;
b->current_length += size;
return vlib_buffer_get_current(b);
}
always_inline void *
vlib_buffer_make_headroom (vlib_buffer_t *b, u8 size)
{
/* XXX should make sure there's enough space! */
b->current_data += size;
return vlib_buffer_get_current (b);
}
always_inline void *
vlib_buffer_pull (vlib_buffer_t * b, u8 size)
{
if (b->current_length < size)
return 0;
void * data = vlib_buffer_get_current (b);
vlib_buffer_advance (b, size);
return data;
}
|
