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Setup MTU for WG/AWG protocol (#576)

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Setup MTU for AWG/WG protocol
This commit is contained in:
Mykola Baibuz 2024-03-18 12:41:53 +02:00 • committed by GitHub
parent 9f82b4c21f
commit e646b85e56
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GPG key ID: B5690EEEBB952194
29 changed files with 512 additions and 56 deletions
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9
client/platforms/linux/daemon/iputilslinux.cpp
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@ -16,9 +16,6 @@
#include "leakdetector.h"
#include "logger.h"
constexpr uint32_t ETH_MTU = 1500;
constexpr uint32_t WG_MTU_OVERHEAD = 80;
namespace {
Logger logger("IPUtilsLinux");
}
@ -38,8 +35,6 @@ bool IPUtilsLinux::addInterfaceIPs(const InterfaceConfig& config) {
}
bool IPUtilsLinux::setMTUAndUp(const InterfaceConfig& config) {
Q_UNUSED(config);
// Create socket file descriptor to perform the ioctl operations on
int sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
if (sockfd < 0) {
@ -56,10 +51,10 @@ bool IPUtilsLinux::setMTUAndUp(const InterfaceConfig& config) {
// FIXME: We need to know how many layers deep this particular
// interface is into a tunnel to work effectively. Otherwise
// we will run into fragmentation issues.
ifr.ifr_mtu = ETH_MTU - WG_MTU_OVERHEAD;
ifr.ifr_mtu = config.m_deviceMTU;
int ret = ioctl(sockfd, SIOCSIFMTU, &ifr);
if (ret) {
logger.error() << "Failed to set MTU -- Return code: " << ret;
logger.error() << "Failed to set MTU -- " << config.m_deviceMTU << " -- Return code: " << ret;
return false;
}