Update support for Solaris.
Adds support for the latest TAP driver from http://www.whiteboard.ne.jp/~admin2/tuntap/, so tinc now also works in switch mode on Solaris 11.
This commit is contained in:
Guus Sliepen
parent
06943e828c
commit
c9bdac68e1
1 changed files with 270 additions and 75 deletions
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@ -1,6 +1,7 @@
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/*
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device.c -- Interaction with Solaris tun device
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Copyright (C) 2001-2005 Ivo Timmermans,
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2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
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2001-2013 Guus Sliepen <guus@tinc-vpn.org>
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This program is free software; you can redistribute it and/or modify
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@ -23,95 +24,253 @@
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#include <sys/stropts.h>
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#include <sys/sockio.h>
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#include <net/if_tun.h>
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#include "../conf.h"
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#include "../device.h"
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#include "../logger.h"
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#include "../names.h"
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#include "../net.h"
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#include "../route.h"
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#include "../utils.h"
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#include "../xalloc.h"
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#include "../if_tun.h"
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#define DEFAULT_DEVICE "/dev/tun"
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#define DEFAULT_TUN_DEVICE "/dev/tun"
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#define DEFAULT_TAP_DEVICE "/dev/tap"
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static enum {
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DEVICE_TYPE_TUN,
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DEVICE_TYPE_TAP,
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} device_type = DEVICE_TYPE_TUN;
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int device_fd = -1;
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static int ip_fd = -1, if_fd = -1;
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static int if_fd = -1;
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static int ip_fd = -1;
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static int arp_fd = -1;
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char *device = NULL;
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char *iface = NULL;
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static char *device_info = NULL;
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static uint64_t device_total_in = 0;
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static uint64_t device_total_out = 0;
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uint64_t device_in_packets = 0;
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uint64_t device_in_bytes = 0;
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uint64_t device_out_packets = 0;
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uint64_t device_out_bytes = 0;
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static bool setup_device(void) {
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int ppa;
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char *ptr;
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char *type;
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if(!get_config_string(lookup_config(config_tree, "Device"), &device))
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device = xstrdup(DEFAULT_DEVICE);
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if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", device, strerror(errno));
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return false;
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if(!get_config_string(lookup_config(config_tree, "Device"), &device)) {
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if(routing_mode == RMODE_ROUTER)
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device = xstrdup(DEFAULT_TUN_DEVICE);
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else
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device = xstrdup(DEFAULT_TAP_DEVICE);
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}
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#ifdef FD_CLOEXEC
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fcntl(device_fd, F_SETFD, FD_CLOEXEC);
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#endif
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if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
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if(!strcasecmp(type, "tun"))
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/* use default */;
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else if(!strcasecmp(type, "tap"))
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device_type = DEVICE_TYPE_TAP;
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else {
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logger(DEBUG_ALWAYS, LOG_ERR, "Unknown device type %s!", type);
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return false;
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}
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} else {
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if(strstr(device, "tap") || routing_mode != RMODE_ROUTER)
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device_type = DEVICE_TYPE_TAP;
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}
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ppa = 0;
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if(device_type == DEVICE_TYPE_TUN)
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device_info = "Solaris tun device";
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else
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device_info = "Solaris tap device";
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ptr = device;
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while(*ptr && !isdigit((int) *ptr))
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ptr++;
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ppa = atoi(ptr);
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/* The following is black magic copied from OpenVPN. */
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if((ip_fd = open("/dev/ip", O_RDWR, 0)) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not open /dev/ip: %s", strerror(errno));
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s\n", "/dev/ip", strerror(errno));
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return false;
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}
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#ifdef FD_CLOEXEC
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fcntl(ip_fd, F_SETFD, FD_CLOEXEC);
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#endif
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if((device_fd = open(device, O_RDWR, 0)) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s\n", device, strerror(errno));
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return false;
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}
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/* Get unit number. */
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char *ptr = device;
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get_config_string(lookup_config(config_tree, "Interface"), &ptr);
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while(*ptr && !isdigit(*ptr))
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ptr++;
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int ppa = atoi(ptr);
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/* Assign a new PPA and get its unit number. */
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if((ppa = ioctl(device_fd, TUNNEWPPA, ppa)) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Can't assign new interface: %s", strerror(errno));
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return false;
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struct strioctl strioc_ppa = {
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.ic_cmd = TUNNEWPPA,
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.ic_len = sizeof ppa,
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.ic_dp = (char *)&ppa,
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};
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if(!*ptr) { /* no number given, try dynamic */
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bool found = false;
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while(!found && ppa < 64) {
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int new_ppa = ioctl(device_fd, I_STR, &strioc_ppa);
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if(new_ppa >= 0) {
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ppa = new_ppa;
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found = true;
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break;
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}
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ppa++;
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}
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if(!found) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not find free PPA for %s %s!", device_info, device);
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return false;
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}
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} else { /* try this particular one */
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if((ppa = ioctl(device_fd, I_STR, &strioc_ppa)) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not assign PPA %d for %s %s!", ppa, device_info, device);
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return false;
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}
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}
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if((if_fd = open(device, O_RDWR, 0)) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s twice: %s", device,
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strerror(errno));
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s\n", device, strerror(errno));
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return false;
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}
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#ifdef FD_CLOEXEC
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fcntl(if_fd, F_SETFD, FD_CLOEXEC);
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#endif
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if(ioctl(if_fd, I_PUSH, "ip") < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Can't push IP module: %s", strerror(errno));
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not push IP module onto %s %s!", device_info, device);
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return false;
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}
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/* Assign ppa according to the unit number returned by tun device */
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if(ioctl(if_fd, IF_UNITSEL, (char *) &ppa) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Can't set PPA %d: %s", ppa, strerror(errno));
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xasprintf(&iface, "%s%d", device_type == DEVICE_TYPE_TUN ? "tun" : "tap", ppa);
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{
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/* Remove muxes just in case they are left over from a crashed tincd */
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struct lifreq ifr = {};
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strncpy(ifr.lifr_name, iface, sizeof ifr.lifr_name);
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if(ioctl(ip_fd, SIOCGLIFMUXID, &ifr) >= 0) {
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int muxid = ifr.lifr_arp_muxid;
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ioctl(ip_fd, I_PUNLINK, muxid);
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muxid = ifr.lifr_ip_muxid;
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ioctl(ip_fd, I_PUNLINK, muxid);
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}
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}
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if(device_type == DEVICE_TYPE_TUN) {
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/* Assign ppa according to the unit number returned by tun device */
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if(ioctl(if_fd, IF_UNITSEL, (char *)&ppa) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not set PPA %d on %s %s!", ppa, device_info, device);
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return false;
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}
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}
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int arp_fd = -1;
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if(device_type == DEVICE_TYPE_TAP) {
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struct lifreq ifr = {};
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if(ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not set flags on %s %s!", device_info, device);
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return false;
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}
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strncpy(ifr.lifr_name, iface, sizeof(ifr.lifr_name));
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ifr.lifr_ppa = ppa;
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/* Assign ppa according to the unit number returned by tun device */
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if(ioctl(if_fd, SIOCSLIFNAME, &ifr) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not set PPA %d on %s %s!", ppa, device_info, device);
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return false;
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}
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if(ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not set flags on %s %s!", device_info, device);
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return false;
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}
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/* Push arp module to if_fd */
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if(ioctl(if_fd, I_PUSH, "arp") < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not push ARP module onto %s %s!", device_info, device);
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return false;
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}
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/* Pop any modules on the stream */
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while(true) {
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if(ioctl(ip_fd, I_POP, NULL) < 0)
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break;
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}
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/* Push arp module to ip_fd */
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if(ioctl(ip_fd, I_PUSH, "arp") < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not push ARP module onto %s!", "/dev/ip");
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return false;
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}
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/* Open arp_fd */
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if((arp_fd = open(device, O_RDWR, 0)) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s\n", device, strerror(errno));
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return false;
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}
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/* Push arp module to arp_fd */
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if(ioctl(arp_fd, I_PUSH, "arp") < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not push ARP module onto %s %s!", device_info, device);
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return false;
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}
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/* Set ifname to arp */
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struct strioctl strioc_if = {
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.ic_cmd = SIOCSLIFNAME,
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.ic_len = sizeof ifr,
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.ic_dp = (char *)&ifr,
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};
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if(ioctl(arp_fd, I_STR, &strioc_if) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not set ifname to %s %s", device_info, device);
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return false;
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}
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}
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int ip_muxid, arp_muxid;
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if((ip_muxid = ioctl(ip_fd, I_PLINK, if_fd)) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not link %s %s to IP", device_info, device);
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return false;
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}
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if(ioctl(ip_fd, I_LINK, if_fd) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Can't link TUN device to IP: %s", strerror(errno));
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if(device_type == DEVICE_TYPE_TAP) {
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if((arp_muxid = ioctl(ip_fd, I_PLINK, arp_fd)) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not link %s %s to ARP", device_info, device);
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return false;
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}
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close(arp_fd);
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}
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struct lifreq ifr = {};
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strncpy(ifr.lifr_name, iface, sizeof(ifr.lifr_name));
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ifr.lifr_ip_muxid = ip_muxid;
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if(device_type == DEVICE_TYPE_TAP) {
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ifr.lifr_arp_muxid = arp_muxid;
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}
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if(ioctl(ip_fd, SIOCSLIFMUXID, &ifr) < 0) {
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if(device_type == DEVICE_TYPE_TAP) {
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ioctl(ip_fd, I_PUNLINK, arp_muxid);
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}
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ioctl(ip_fd, I_PUNLINK, ip_muxid);
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not set multiplexor id for %s %s", device_info, device);
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return false;
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}
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if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
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xasprintf(&iface, "tun%d", ppa);
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close(if_fd);
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device_info = "Solaris tun device";
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#ifdef FD_CLOEXEC
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fcntl(device_fd, F_SETFD, FD_CLOEXEC);
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fcntl(ip_fd, F_SETFD, FD_CLOEXEC);
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#endif
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logger(DEBUG_ALWAYS, LOG_INFO, "%s is a %s", device, device_info);
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@ -119,7 +278,17 @@ static bool setup_device(void) {
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}
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static void close_device(void) {
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close(if_fd);
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if(iface) {
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struct lifreq ifr = {};
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strncpy(ifr.lifr_name, iface, sizeof ifr.lifr_name);
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if(ioctl(ip_fd, SIOCGLIFMUXID, &ifr) >= 0) {
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int muxid = ifr.lifr_arp_muxid;
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ioctl(ip_fd, I_PUNLINK, muxid);
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muxid = ifr.lifr_ip_muxid;
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ioctl(ip_fd, I_PUNLINK, muxid);
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}
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}
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close(ip_fd);
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close(device_fd);
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@ -130,58 +299,84 @@ static void close_device(void) {
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static bool read_packet(vpn_packet_t *packet) {
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int inlen;
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if((inlen = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info,
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device, strerror(errno));
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return false;
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}
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switch(device_type) {
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case DEVICE_TYPE_TUN:
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if((inlen = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno));
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return false;
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}
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switch(packet->data[14] >> 4) {
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case 4:
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packet->data[12] = 0x08;
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packet->data[13] = 0x00;
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switch(packet->data[14] >> 4) {
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case 4:
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packet->data[12] = 0x08;
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packet->data[13] = 0x00;
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break;
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case 6:
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packet->data[12] = 0x86;
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packet->data[13] = 0xDD;
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break;
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default:
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logger(DEBUG_TRAFFIC, LOG_ERR, "Unknown IP version %d while reading packet from %s %s", packet->data[14] >> 4, device_info, device);
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return false;
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}
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memset(packet->data, 0, 12);
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packet->len = inlen + 14;
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break;
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case 6:
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packet->data[12] = 0x86;
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packet->data[13] = 0xDD;
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case DEVICE_TYPE_TAP:
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if((inlen = read(device_fd, packet->data, MTU)) <= 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno));
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return false;
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}
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packet->len = inlen + 14;
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break;
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default:
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logger(DEBUG_TRAFFIC, LOG_ERR,
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"Unknown IP version %d while reading packet from %s %s",
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packet->data[14] >> 4, device_info, device);
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return false;
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abort();
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}
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memset(packet->data, 0, 12);
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packet->len = inlen + 14;
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device_in_packets++;
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device_in_bytes += packet->len;
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device_total_in += packet->len;
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logger(DEBUG_TRAFFIC, LOG_DEBUG, "Read packet of %d bytes from %s", packet->len,
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device_info);
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logger(DEBUG_TRAFFIC, LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, device_info);
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return true;
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}
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static bool write_packet(vpn_packet_t *packet) {
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logger(DEBUG_TRAFFIC, LOG_DEBUG, "Writing packet of %d bytes to %s",
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packet->len, device_info);
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logger(DEBUG_TRAFFIC, LOG_DEBUG, "Writing packet of %d bytes to %s", packet->len, device_info);
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if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info,
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device, strerror(errno));
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return false;
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switch(device_type) {
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case DEVICE_TYPE_TUN:
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if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno));
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return false;
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}
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break;
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case DEVICE_TYPE_TAP:
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if(write(device_fd, packet->data, packet->len) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno));
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return false;
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}
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break;
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default:
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abort();
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}
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device_total_out += packet->len;
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device_out_packets++;
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device_out_bytes += packet->len;
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return true;
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}
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static void dump_device_stats(void) {
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logger(DEBUG_ALWAYS, LOG_DEBUG, "Statistics for %s %s:", device_info, device);
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logger(DEBUG_ALWAYS, LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in);
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logger(DEBUG_ALWAYS, LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out);
|
||||
logger(DEBUG_ALWAYS, LOG_DEBUG, " total bytes in: %10"PRIu64, device_in_bytes);
|
||||
logger(DEBUG_ALWAYS, LOG_DEBUG, " total bytes out: %10"PRIu64, device_out_bytes);
|
||||
}
|
||||
|
||||
const devops_t os_devops = {
|
||||
|
|
|
|||
Loading…
Reference in a new issue