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git.proxmox.com Git - mirror_iproute2.git/blob - lib/ll_map.c
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
22 #include "libnetlink.h"
32 unsigned char addr
[8];
36 static struct idxmap
*idxmap
[16];
38 int ll_remember_index(struct sockaddr_nl
*who
, struct nlmsghdr
*n
, void *arg
)
41 struct ifinfomsg
*ifi
= NLMSG_DATA(n
);
42 struct idxmap
*im
, **imp
;
43 struct rtattr
*tb
[IFLA_MAX
+1];
45 if (n
->nlmsg_type
!= RTM_NEWLINK
)
48 if (n
->nlmsg_len
< NLMSG_LENGTH(sizeof(ifi
)))
52 memset(tb
, 0, sizeof(tb
));
53 parse_rtattr(tb
, IFLA_MAX
, IFLA_RTA(ifi
), IFLA_PAYLOAD(n
));
54 if (tb
[IFLA_IFNAME
] == NULL
)
57 h
= ifi
->ifi_index
&0xF;
59 for (imp
=&idxmap
[h
]; (im
=*imp
)!=NULL
; imp
= &im
->next
)
60 if (im
->index
== ifi
->ifi_index
)
64 im
= malloc(sizeof(*im
));
68 im
->index
= ifi
->ifi_index
;
72 im
->type
= ifi
->ifi_type
;
73 im
->flags
= ifi
->ifi_flags
;
74 if (tb
[IFLA_ADDRESS
]) {
76 im
->alen
= alen
= RTA_PAYLOAD(tb
[IFLA_ADDRESS
]);
77 if (alen
> sizeof(im
->addr
))
78 alen
= sizeof(im
->addr
);
79 memcpy(im
->addr
, RTA_DATA(tb
[IFLA_ADDRESS
]), alen
);
82 memset(im
->addr
, 0, sizeof(im
->addr
));
84 strcpy(im
->name
, RTA_DATA(tb
[IFLA_IFNAME
]));
88 const char *ll_idx_n2a(int idx
, char *buf
)
94 for (im
= idxmap
[idx
&0xF]; im
; im
= im
->next
)
97 snprintf(buf
, 16, "if%d", idx
);
102 const char *ll_index_to_name(int idx
)
104 static char nbuf
[16];
106 return ll_idx_n2a(idx
, nbuf
);
109 int ll_index_to_type(int idx
)
115 for (im
= idxmap
[idx
&0xF]; im
; im
= im
->next
)
116 if (im
->index
== idx
)
121 unsigned ll_index_to_flags(int idx
)
128 for (im
= idxmap
[idx
&0xF]; im
; im
= im
->next
)
129 if (im
->index
== idx
)
134 int ll_name_to_index(char *name
)
136 static char ncache
[16];
143 if (icache
&& strcmp(name
, ncache
) == 0)
145 for (i
=0; i
<16; i
++) {
146 for (im
= idxmap
[i
]; im
; im
= im
->next
) {
147 if (strcmp(im
->name
, name
) == 0) {
149 strcpy(ncache
, name
);
157 int ll_init_map(struct rtnl_handle
*rth
)
159 if (rtnl_wilddump_request(rth
, AF_UNSPEC
, RTM_GETLINK
) < 0) {
160 perror("Cannot send dump request");
164 if (rtnl_dump_filter(rth
, ll_remember_index
, &idxmap
, NULL
, NULL
) < 0) {
165 fprintf(stderr
, "Dump terminated\n");