diff options
Diffstat (limited to 'osdep/OSXEthernetTap.cpp')
| -rw-r--r-- | osdep/OSXEthernetTap.cpp | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/osdep/OSXEthernetTap.cpp b/osdep/OSXEthernetTap.cpp index 53c9ba98..f5e1c43f 100644 --- a/osdep/OSXEthernetTap.cpp +++ b/osdep/OSXEthernetTap.cpp @@ -338,9 +338,6 @@ OSXEthernetTap::OSXEthernetTap( Utils::snprintf(nwids,sizeof(nwids),"%.16llx",nwid); - if (mtu > 2800) - throw std::runtime_error("max tap MTU is 2800"); - Mutex::Lock _gl(globalTapCreateLock); if (::stat("/dev/zt0",&stattmp)) { @@ -574,7 +571,7 @@ std::vector<InetAddress> OSXEthernetTap::ips() const void OSXEthernetTap::put(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len) { - char putBuf[4096]; + char putBuf[ZT_MAX_MTU + 64]; if ((_fd > 0)&&(len <= _mtu)&&(_enabled)) { to.copyTo(putBuf,6); from.copyTo(putBuf + 6,6); @@ -632,13 +629,30 @@ void OSXEthernetTap::scanMulticastGroups(std::vector<MulticastGroup> &added,std: _multicastGroups.swap(newGroups); } +void OSXEthernetTap::setMtu(unsigned int mtu) +{ + if (mtu != _mtu) { + _mtu = mtu; + long cpid = (long)vfork(); + if (cpid == 0) { + char tmp[64]; + Utils::snprintf(tmp,sizeof(tmp),"%u",mtu); + execl("/sbin/ifconfig","/sbin/ifconfig",_dev.c_str(),"mtu",tmp,(const char *)0); + _exit(-1); + } else if (cpid > 0) { + int exitcode = -1; + waitpid(cpid,&exitcode,0); + } + } +} + void OSXEthernetTap::threadMain() throw() { fd_set readfds,nullfds; MAC to,from; int n,nfds,r; - char getBuf[8194]; + char getBuf[ZT_MAX_MTU + 64]; Thread::sleep(500); |