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Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +09001/*
2 * Copyright (C)2006 USAGI/WIDE Project
Stephen Hemmingerae665a52006-12-05 10:10:22 -08003 *
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +09004 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
Stephen Hemmingerae665a52006-12-05 10:10:22 -08008 *
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +09009 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
Stephen Hemmingerae665a52006-12-05 10:10:22 -080013 *
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +090014 * You should have received a copy of the GNU General Public License
Stephen Hemminger4d98ab02013-12-06 15:05:07 -080015 * along with this program; if not, see <http://www.gnu.org/licenses>.
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +090016 */
17/*
18 * split from ip_tunnel.c
19 */
20/*
21 * Author:
22 * Masahide NAKAMURA @USAGI
23 */
24
25#include <stdio.h>
26#include <string.h>
27#include <unistd.h>
Alexandre Cassen3979ef92010-04-04 22:40:14 +020028#include <errno.h>
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +090029#include <sys/types.h>
30#include <sys/socket.h>
31#include <sys/ioctl.h>
32#include <netinet/in.h>
33#include <linux/if.h>
34#include <linux/ip.h>
35#include <linux/if_tunnel.h>
36
37#include "utils.h"
38#include "tunnel.h"
39
40const char *tnl_strproto(__u8 proto)
41{
42 static char buf[16];
43
44 switch (proto) {
45 case IPPROTO_IPIP:
46 strcpy(buf, "ip");
47 break;
48 case IPPROTO_GRE:
49 strcpy(buf, "gre");
50 break;
51 case IPPROTO_IPV6:
52 strcpy(buf, "ipv6");
53 break;
Stephen Hemminger14e97672014-12-03 19:08:41 -080054 case IPPROTO_ESP:
55 strcpy(buf, "esp");
56 break;
YOSHIFUJI Hideaki / 吉藤英明0b959b02007-10-12 16:51:22 +090057 case 0:
58 strcpy(buf, "any");
59 break;
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +090060 default:
61 strcpy(buf, "unknown");
62 break;
63 }
64
65 return buf;
66}
67
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +090068int tnl_get_ioctl(const char *basedev, void *p)
69{
70 struct ifreq ifr;
71 int fd;
72 int err;
73
74 strncpy(ifr.ifr_name, basedev, IFNAMSIZ);
75 ifr.ifr_ifru.ifru_data = (void*)p;
Zhang Shengjucb89c7c2015-07-24 12:11:32 -040076
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +090077 fd = socket(preferred_family, SOCK_DGRAM, 0);
Zhang Shengjucb89c7c2015-07-24 12:11:32 -040078 if (fd < 0) {
79 fprintf(stderr, "create socket failed: %s\n", strerror(errno));
80 return -1;
81 }
82
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +090083 err = ioctl(fd, SIOCGETTUNNEL, &ifr);
84 if (err)
Kees van Reeuwijk14645ec2013-02-08 03:32:36 +000085 fprintf(stderr, "get tunnel \"%s\" failed: %s\n", basedev,
Stephen Hemmingerea71bea2010-11-28 10:35:28 -080086 strerror(errno));
87
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +090088 close(fd);
89 return err;
90}
91
92int tnl_add_ioctl(int cmd, const char *basedev, const char *name, void *p)
93{
94 struct ifreq ifr;
95 int fd;
96 int err;
97
98 if (cmd == SIOCCHGTUNNEL && name[0])
99 strncpy(ifr.ifr_name, name, IFNAMSIZ);
100 else
101 strncpy(ifr.ifr_name, basedev, IFNAMSIZ);
102 ifr.ifr_ifru.ifru_data = p;
Zhang Shengjucb89c7c2015-07-24 12:11:32 -0400103
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +0900104 fd = socket(preferred_family, SOCK_DGRAM, 0);
Zhang Shengjucb89c7c2015-07-24 12:11:32 -0400105 if (fd < 0) {
106 fprintf(stderr, "create socket failed: %s\n", strerror(errno));
107 return -1;
108 }
109
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +0900110 err = ioctl(fd, cmd, &ifr);
111 if (err)
Kees van Reeuwijk14645ec2013-02-08 03:32:36 +0000112 fprintf(stderr, "add tunnel \"%s\" failed: %s\n", ifr.ifr_name,
Stephen Hemmingerea71bea2010-11-28 10:35:28 -0800113 strerror(errno));
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +0900114 close(fd);
115 return err;
116}
117
118int tnl_del_ioctl(const char *basedev, const char *name, void *p)
119{
120 struct ifreq ifr;
121 int fd;
122 int err;
123
124 if (name[0])
125 strncpy(ifr.ifr_name, name, IFNAMSIZ);
126 else
127 strncpy(ifr.ifr_name, basedev, IFNAMSIZ);
Stephen Hemmingerea71bea2010-11-28 10:35:28 -0800128
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +0900129 ifr.ifr_ifru.ifru_data = p;
Zhang Shengjucb89c7c2015-07-24 12:11:32 -0400130
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +0900131 fd = socket(preferred_family, SOCK_DGRAM, 0);
Zhang Shengjucb89c7c2015-07-24 12:11:32 -0400132 if (fd < 0) {
133 fprintf(stderr, "create socket failed: %s\n", strerror(errno));
134 return -1;
135 }
136
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +0900137 err = ioctl(fd, SIOCDELTUNNEL, &ifr);
138 if (err)
Kees van Reeuwijk14645ec2013-02-08 03:32:36 +0000139 fprintf(stderr, "delete tunnel \"%s\" failed: %s\n",
Stephen Hemmingerea71bea2010-11-28 10:35:28 -0800140 ifr.ifr_name, strerror(errno));
Masahide NAKAMURAd9bd1bd2006-11-24 12:27:03 +0900141 close(fd);
142 return err;
143}
Sascha Hlusiaka07e9912009-05-04 01:44:47 +0200144
Stephen Hemminger06125192014-02-17 10:55:31 -0800145static int tnl_gen_ioctl(int cmd, const char *name,
Stephen Hemmingerea71bea2010-11-28 10:35:28 -0800146 void *p, int skiperr)
Sascha Hlusiaka07e9912009-05-04 01:44:47 +0200147{
148 struct ifreq ifr;
149 int fd;
150 int err;
151
152 strncpy(ifr.ifr_name, name, IFNAMSIZ);
153 ifr.ifr_ifru.ifru_data = p;
Zhang Shengjucb89c7c2015-07-24 12:11:32 -0400154
Sascha Hlusiaka07e9912009-05-04 01:44:47 +0200155 fd = socket(preferred_family, SOCK_DGRAM, 0);
Zhang Shengjucb89c7c2015-07-24 12:11:32 -0400156 if (fd < 0) {
157 fprintf(stderr, "create socket failed: %s\n", strerror(errno));
158 return -1;
159 }
160
Sascha Hlusiaka07e9912009-05-04 01:44:47 +0200161 err = ioctl(fd, cmd, &ifr);
Alexandre Cassen3979ef92010-04-04 22:40:14 +0200162 if (err && errno != skiperr)
Stephen Hemmingerea71bea2010-11-28 10:35:28 -0800163 fprintf(stderr, "%s: ioctl %x failed: %s\n", name,
164 cmd, strerror(errno));
Sascha Hlusiaka07e9912009-05-04 01:44:47 +0200165 close(fd);
166 return err;
167}
Alexandre Cassenb88215c2009-12-16 02:38:29 +0000168
169int tnl_prl_ioctl(int cmd, const char *name, void *p)
170{
Alexandre Cassen3979ef92010-04-04 22:40:14 +0200171 return tnl_gen_ioctl(cmd, name, p, -1);
Alexandre Cassenb88215c2009-12-16 02:38:29 +0000172}
173
174int tnl_6rd_ioctl(int cmd, const char *name, void *p)
175{
Alexandre Cassen3979ef92010-04-04 22:40:14 +0200176 return tnl_gen_ioctl(cmd, name, p, -1);
Alexandre Cassenb88215c2009-12-16 02:38:29 +0000177}
178
179int tnl_ioctl_get_6rd(const char *name, void *p)
180{
Alexandre Cassen3979ef92010-04-04 22:40:14 +0200181 return tnl_gen_ioctl(SIOCGET6RD, name, p, EINVAL);
Alexandre Cassenb88215c2009-12-16 02:38:29 +0000182}
Phil Suttera7ed1522015-11-13 18:08:55 +0100183
184__be32 tnl_parse_key(const char *name, const char *key)
185{
186 unsigned uval;
187
188 if (strchr(key, '.'))
189 return get_addr32(key);
190
191 if (get_unsigned(&uval, key, 0) < 0) {
192 fprintf(stderr, "invalid value for \"%s\": \"%s\";", name, key);
193 fprintf(stderr, " it should be an unsigned integer\n");
194 exit(-1);
195 }
196 return htonl(uval);
197}
Phil Sutter7d6aadc2015-12-18 11:58:06 +0100198
199/* tnl_print_stats - print tunnel statistics
200 *
201 * @buf - tunnel interface's line in /proc/net/dev,
202 * starting past the interface name and following colon
203 */
204void tnl_print_stats(const char *buf)
205{
206 unsigned long rx_bytes, rx_packets, rx_errs, rx_drops,
207 rx_fifo, rx_frame,
208 tx_bytes, tx_packets, tx_errs, tx_drops,
209 tx_fifo, tx_colls, tx_carrier, rx_multi;
210
Phil Sutterf8fc1d12015-12-21 20:42:56 +0100211 if (sscanf(buf, "%lu%lu%lu%lu%lu%lu%lu%*d%lu%lu%lu%lu%lu%lu%lu",
Phil Sutter7d6aadc2015-12-18 11:58:06 +0100212 &rx_bytes, &rx_packets, &rx_errs, &rx_drops,
213 &rx_fifo, &rx_frame, &rx_multi,
214 &tx_bytes, &tx_packets, &tx_errs, &tx_drops,
215 &tx_fifo, &tx_colls, &tx_carrier) != 14)
216 return;
217
218 printf("%s", _SL_);
219 printf("RX: Packets Bytes Errors CsumErrs OutOfSeq Mcasts%s", _SL_);
220 printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-8ld%s",
221 rx_packets, rx_bytes, rx_errs, rx_frame, rx_fifo, rx_multi, _SL_);
222 printf("TX: Packets Bytes Errors DeadLoop NoRoute NoBufs%s", _SL_);
223 printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-6ld",
224 tx_packets, tx_bytes, tx_errs, tx_colls, tx_carrier, tx_drops);
225}