| /* |
| * Copyright (C)2006 USAGI/WIDE Project |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, see <http://www.gnu.org/licenses>. |
| */ |
| /* |
| * split from ip_tunnel.c |
| */ |
| /* |
| * Author: |
| * Masahide NAKAMURA @USAGI |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| #include <sys/ioctl.h> |
| #include <netinet/in.h> |
| #include <linux/if.h> |
| #include <linux/ip.h> |
| #include <linux/if_tunnel.h> |
| |
| #include "utils.h" |
| #include "tunnel.h" |
| |
| const char *tnl_strproto(__u8 proto) |
| { |
| static char buf[16]; |
| |
| switch (proto) { |
| case IPPROTO_IPIP: |
| strcpy(buf, "ip"); |
| break; |
| case IPPROTO_GRE: |
| strcpy(buf, "gre"); |
| break; |
| case IPPROTO_IPV6: |
| strcpy(buf, "ipv6"); |
| break; |
| case IPPROTO_ESP: |
| strcpy(buf, "esp"); |
| break; |
| case 0: |
| strcpy(buf, "any"); |
| break; |
| default: |
| strcpy(buf, "unknown"); |
| break; |
| } |
| |
| return buf; |
| } |
| |
| int tnl_get_ioctl(const char *basedev, void *p) |
| { |
| struct ifreq ifr; |
| int fd; |
| int err; |
| |
| strncpy(ifr.ifr_name, basedev, IFNAMSIZ); |
| ifr.ifr_ifru.ifru_data = (void*)p; |
| |
| fd = socket(preferred_family, SOCK_DGRAM, 0); |
| if (fd < 0) { |
| fprintf(stderr, "create socket failed: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| err = ioctl(fd, SIOCGETTUNNEL, &ifr); |
| if (err) |
| fprintf(stderr, "get tunnel \"%s\" failed: %s\n", basedev, |
| strerror(errno)); |
| |
| close(fd); |
| return err; |
| } |
| |
| int tnl_add_ioctl(int cmd, const char *basedev, const char *name, void *p) |
| { |
| struct ifreq ifr; |
| int fd; |
| int err; |
| |
| if (cmd == SIOCCHGTUNNEL && name[0]) |
| strncpy(ifr.ifr_name, name, IFNAMSIZ); |
| else |
| strncpy(ifr.ifr_name, basedev, IFNAMSIZ); |
| ifr.ifr_ifru.ifru_data = p; |
| |
| fd = socket(preferred_family, SOCK_DGRAM, 0); |
| if (fd < 0) { |
| fprintf(stderr, "create socket failed: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| err = ioctl(fd, cmd, &ifr); |
| if (err) |
| fprintf(stderr, "add tunnel \"%s\" failed: %s\n", ifr.ifr_name, |
| strerror(errno)); |
| close(fd); |
| return err; |
| } |
| |
| int tnl_del_ioctl(const char *basedev, const char *name, void *p) |
| { |
| struct ifreq ifr; |
| int fd; |
| int err; |
| |
| if (name[0]) |
| strncpy(ifr.ifr_name, name, IFNAMSIZ); |
| else |
| strncpy(ifr.ifr_name, basedev, IFNAMSIZ); |
| |
| ifr.ifr_ifru.ifru_data = p; |
| |
| fd = socket(preferred_family, SOCK_DGRAM, 0); |
| if (fd < 0) { |
| fprintf(stderr, "create socket failed: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| err = ioctl(fd, SIOCDELTUNNEL, &ifr); |
| if (err) |
| fprintf(stderr, "delete tunnel \"%s\" failed: %s\n", |
| ifr.ifr_name, strerror(errno)); |
| close(fd); |
| return err; |
| } |
| |
| static int tnl_gen_ioctl(int cmd, const char *name, |
| void *p, int skiperr) |
| { |
| struct ifreq ifr; |
| int fd; |
| int err; |
| |
| strncpy(ifr.ifr_name, name, IFNAMSIZ); |
| ifr.ifr_ifru.ifru_data = p; |
| |
| fd = socket(preferred_family, SOCK_DGRAM, 0); |
| if (fd < 0) { |
| fprintf(stderr, "create socket failed: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| err = ioctl(fd, cmd, &ifr); |
| if (err && errno != skiperr) |
| fprintf(stderr, "%s: ioctl %x failed: %s\n", name, |
| cmd, strerror(errno)); |
| close(fd); |
| return err; |
| } |
| |
| int tnl_prl_ioctl(int cmd, const char *name, void *p) |
| { |
| return tnl_gen_ioctl(cmd, name, p, -1); |
| } |
| |
| int tnl_6rd_ioctl(int cmd, const char *name, void *p) |
| { |
| return tnl_gen_ioctl(cmd, name, p, -1); |
| } |
| |
| int tnl_ioctl_get_6rd(const char *name, void *p) |
| { |
| return tnl_gen_ioctl(SIOCGET6RD, name, p, EINVAL); |
| } |
| |
| __be32 tnl_parse_key(const char *name, const char *key) |
| { |
| unsigned uval; |
| |
| if (strchr(key, '.')) |
| return get_addr32(key); |
| |
| if (get_unsigned(&uval, key, 0) < 0) { |
| fprintf(stderr, "invalid value for \"%s\": \"%s\";", name, key); |
| fprintf(stderr, " it should be an unsigned integer\n"); |
| exit(-1); |
| } |
| return htonl(uval); |
| } |
| |
| /* tnl_print_stats - print tunnel statistics |
| * |
| * @buf - tunnel interface's line in /proc/net/dev, |
| * starting past the interface name and following colon |
| */ |
| void tnl_print_stats(const char *buf) |
| { |
| unsigned long rx_bytes, rx_packets, rx_errs, rx_drops, |
| rx_fifo, rx_frame, |
| tx_bytes, tx_packets, tx_errs, tx_drops, |
| tx_fifo, tx_colls, tx_carrier, rx_multi; |
| |
| if (sscanf(buf, "%lu%lu%lu%lu%lu%lu%lu%*d%lu%lu%lu%lu%lu%lu%lu", |
| &rx_bytes, &rx_packets, &rx_errs, &rx_drops, |
| &rx_fifo, &rx_frame, &rx_multi, |
| &tx_bytes, &tx_packets, &tx_errs, &tx_drops, |
| &tx_fifo, &tx_colls, &tx_carrier) != 14) |
| return; |
| |
| printf("%s", _SL_); |
| printf("RX: Packets Bytes Errors CsumErrs OutOfSeq Mcasts%s", _SL_); |
| printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-8ld%s", |
| rx_packets, rx_bytes, rx_errs, rx_frame, rx_fifo, rx_multi, _SL_); |
| printf("TX: Packets Bytes Errors DeadLoop NoRoute NoBufs%s", _SL_); |
| printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-6ld", |
| tx_packets, tx_bytes, tx_errs, tx_colls, tx_carrier, tx_drops); |
| } |