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
|
// SPDX-License-Identifier: GPL-2.0-or-later
/* RIP offset-list
* Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
*/
#include <zebra.h>
#include "if.h"
#include "prefix.h"
#include "filter.h"
#include "command.h"
#include "linklist.h"
#include "memory.h"
#include "ripd/ripd.h"
DEFINE_MTYPE_STATIC(RIPD, RIP_OFFSET_LIST, "RIP offset list");
#define OFFSET_LIST_IN_NAME(O) ((O)->direct[RIP_OFFSET_LIST_IN].alist_name)
#define OFFSET_LIST_IN_METRIC(O) ((O)->direct[RIP_OFFSET_LIST_IN].metric)
#define OFFSET_LIST_OUT_NAME(O) ((O)->direct[RIP_OFFSET_LIST_OUT].alist_name)
#define OFFSET_LIST_OUT_METRIC(O) ((O)->direct[RIP_OFFSET_LIST_OUT].metric)
struct rip_offset_list *rip_offset_list_new(struct rip *rip, const char *ifname)
{
struct rip_offset_list *offset;
offset = XCALLOC(MTYPE_RIP_OFFSET_LIST, sizeof(struct rip_offset_list));
offset->rip = rip;
offset->ifname = strdup(ifname);
listnode_add_sort(rip->offset_list_master, offset);
return offset;
}
void offset_list_del(struct rip_offset_list *offset)
{
listnode_delete(offset->rip->offset_list_master, offset);
offset_list_free(offset);
}
void offset_list_free(struct rip_offset_list *offset)
{
if (OFFSET_LIST_IN_NAME(offset))
free(OFFSET_LIST_IN_NAME(offset));
if (OFFSET_LIST_OUT_NAME(offset))
free(OFFSET_LIST_OUT_NAME(offset));
free(offset->ifname);
XFREE(MTYPE_RIP_OFFSET_LIST, offset);
}
struct rip_offset_list *rip_offset_list_lookup(struct rip *rip,
const char *ifname)
{
struct rip_offset_list *offset;
struct listnode *node, *nnode;
for (ALL_LIST_ELEMENTS(rip->offset_list_master, node, nnode, offset)) {
if (strcmp(offset->ifname, ifname) == 0)
return offset;
}
return NULL;
}
/* If metric is modified return 1. */
int rip_offset_list_apply_in(struct prefix_ipv4 *p, struct interface *ifp,
uint32_t *metric)
{
struct rip_interface *ri = ifp->info;
struct rip_offset_list *offset;
struct access_list *alist;
/* Look up offset-list with interface name. */
offset = rip_offset_list_lookup(ri->rip, ifp->name);
if (offset && OFFSET_LIST_IN_NAME(offset)) {
alist = access_list_lookup(AFI_IP, OFFSET_LIST_IN_NAME(offset));
if (alist
&& access_list_apply(alist, (struct prefix *)p)
== FILTER_PERMIT) {
*metric += OFFSET_LIST_IN_METRIC(offset);
return 1;
}
return 0;
}
/* Look up offset-list without interface name. */
offset = rip_offset_list_lookup(ri->rip, "*");
if (offset && OFFSET_LIST_IN_NAME(offset)) {
alist = access_list_lookup(AFI_IP, OFFSET_LIST_IN_NAME(offset));
if (alist
&& access_list_apply(alist, (struct prefix *)p)
== FILTER_PERMIT) {
*metric += OFFSET_LIST_IN_METRIC(offset);
return 1;
}
return 0;
}
return 0;
}
/* If metric is modified return 1. */
int rip_offset_list_apply_out(struct prefix_ipv4 *p, struct interface *ifp,
uint32_t *metric)
{
struct rip_interface *ri = ifp->info;
struct rip_offset_list *offset;
struct access_list *alist;
/* Look up offset-list with interface name. */
offset = rip_offset_list_lookup(ri->rip, ifp->name);
if (offset && OFFSET_LIST_OUT_NAME(offset)) {
alist = access_list_lookup(AFI_IP,
OFFSET_LIST_OUT_NAME(offset));
if (alist
&& access_list_apply(alist, (struct prefix *)p)
== FILTER_PERMIT) {
*metric += OFFSET_LIST_OUT_METRIC(offset);
return 1;
}
return 0;
}
/* Look up offset-list without interface name. */
offset = rip_offset_list_lookup(ri->rip, "*");
if (offset && OFFSET_LIST_OUT_NAME(offset)) {
alist = access_list_lookup(AFI_IP,
OFFSET_LIST_OUT_NAME(offset));
if (alist
&& access_list_apply(alist, (struct prefix *)p)
== FILTER_PERMIT) {
*metric += OFFSET_LIST_OUT_METRIC(offset);
return 1;
}
return 0;
}
return 0;
}
int offset_list_cmp(struct rip_offset_list *o1, struct rip_offset_list *o2)
{
return strcmp(o1->ifname, o2->ifname);
}
|
