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Allow linking with multiple device drivers.

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Apart from the platform specific tun/tap driver, link with the dummy and
raw_socket devices, and optionally with support for UML and VDE devices.
At runtime, the DeviceType option can be used to select which driver to
use.
This commit is contained in:
Guus Sliepen 2011-12-04 01:20:59 +01:00
parent 5672863e59
commit 178e52f76e
19 changed files with 281 additions and 96 deletions
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20
src/linux/device.c
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@ -1,7 +1,7 @@
/*
device.c -- Interaction with Linux ethertap and tun/tap device
Copyright (C) 2001-2005 Ivo Timmermans,
2001-2009 Guus Sliepen <guus@tinc-vpn.org>
2001-2011 Guus Sliepen <guus@tinc-vpn.org>
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
@ -51,7 +51,7 @@ static char *device_info;
static uint64_t device_total_in = 0;
static uint64_t device_total_out = 0;
bool setup_device(void) {
static bool setup_device(void) {
struct ifreq ifr;
bool t1q = false;
@ -121,14 +121,14 @@ bool setup_device(void) {
return true;
}
void close_device(void) {
static void close_device(void) {
close(device_fd);
free(device);
free(iface);
}
bool read_packet(vpn_packet_t *packet) {
static bool read_packet(vpn_packet_t *packet) {
int lenin;
switch(device_type) {
@ -175,7 +175,7 @@ bool read_packet(vpn_packet_t *packet) {
return true;
}
bool write_packet(vpn_packet_t *packet) {
static bool write_packet(vpn_packet_t *packet) {
ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s",
packet->len, device_info);
@ -211,8 +211,16 @@ bool write_packet(vpn_packet_t *packet) {
return true;
}
void dump_device_stats(void) {
static void dump_device_stats(void) {
logger(LOG_DEBUG, "Statistics for %s %s:", device_info, device);
logger(LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in);
logger(LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out);
}
const devops_t os_devops = {
.setup = setup_device,
.close = close_device,
.read = read_packet,
.write = write_packet,
.dump_stats = dump_device_stats,
};