// Open Ethernet device (Linux)
ETH *OpenEthLinux(char *name, bool local, bool tapmode, char *tapaddr)
{
ETH *e;
struct ifreq ifr;
struct sockaddr_ll addr;
int s;
int index;
CANCEL *c;
// Validate arguments
if (name == NULL)
{
return NULL;
}
if (tapmode)
{
#ifndef NO_VLAN
// In tap mode
VLAN *v = NewTap(name, tapaddr);
if (v == NULL)
{
return NULL;
}
e = ZeroMalloc(sizeof(ETH));
e->Name = CopyStr(name);
e->Title = CopyStr(name);
e->Cancel = VLanGetCancel(v);
e->IfIndex = 0;
e->Socket = INVALID_SOCKET;
e->Tap = v;
return e;
#else // NO_VLAN
return NULL;
#endif // NO_VLAN
}
s = UnixEthOpenRawSocket();
if (s == INVALID_SOCKET)
{
return NULL;
}
Zero(&ifr, sizeof(ifr));
StrCpy(ifr.ifr_name, sizeof(ifr.ifr_name), name);
if (ioctl(s, SIOCGIFINDEX, &ifr) < 0)
{
closesocket(s);
return NULL;
}
index = ifr.ifr_ifindex;
Zero(&addr, sizeof(addr));
addr.sll_family = PF_PACKET;
addr.sll_protocol = htons(ETH_P_ALL);
addr.sll_ifindex = index;
if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0)
{
closesocket(s);
return NULL;
}
if (local == false)
{
// Enable promiscious mode
Zero(&ifr, sizeof(ifr));
StrCpy(ifr.ifr_name, sizeof(ifr.ifr_name), name);
if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0)
{
// Failed
closesocket(s);
return NULL;
}
ifr.ifr_flags |= IFF_PROMISC;
if (ioctl(s, SIOCSIFFLAGS, &ifr) < 0)
{
// Failed
closesocket(s);
return NULL;
}
}
e = ZeroMalloc(sizeof(ETH));
e->Name = CopyStr(name);
e->Title = CopyStr(name);
e->IfIndex = index;
e->Socket = s;
c = NewCancel();
UnixDeletePipe(c->pipe_read, c->pipe_write);
c->pipe_read = c->pipe_write = -1;
UnixSetSocketNonBlockingMode(s, true);
c->SpecialFlag = true;
c->pipe_read = s;
e->Cancel = c;
// Get MTU
e->InitialMtu = EthGetMtu(e);
if (tapmode == false)
{
// Disable hardware offloading
UnixDisableInterfaceOffload(name);
}
return e;
}
// Open Ethernet device (Linux)
ETH *OpenEthLinux(char *name, bool local, bool tapmode, char *tapaddr)
{
ETH *e;
struct ifreq ifr;
struct sockaddr_ll addr;
int s;
int index;
bool aux_ok = false;
CANCEL *c;
// Validate arguments
if (name == NULL)
{
return NULL;
}
if (tapmode)
{
#ifndef NO_VLAN
// In tap mode
VLAN *v = NewTap(name, tapaddr);
if (v == NULL)
{
return NULL;
}
e = ZeroMalloc(sizeof(ETH));
e->Name = CopyStr(name);
e->Title = CopyStr(name);
e->Cancel = VLanGetCancel(v);
e->IfIndex = 0;
e->Socket = INVALID_SOCKET;
e->Tap = v;
return e;
#else // NO_VLAN
return NULL;
#endif // NO_VLAN
}
s = UnixEthOpenRawSocket();
if (s == INVALID_SOCKET)
{
return NULL;
}
Zero(&ifr, sizeof(ifr));
StrCpy(ifr.ifr_name, sizeof(ifr.ifr_name), name);
if (ioctl(s, SIOCGIFINDEX, &ifr) < 0)
{
closesocket(s);
return NULL;
}
index = ifr.ifr_ifindex;
Zero(&addr, sizeof(addr));
addr.sll_family = PF_PACKET;
addr.sll_protocol = htons(ETH_P_ALL);
addr.sll_ifindex = index;
if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0)
{
closesocket(s);
return NULL;
}
if (local == false)
{
// Enable promiscious mode
Zero(&ifr, sizeof(ifr));
StrCpy(ifr.ifr_name, sizeof(ifr.ifr_name), name);
if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0)
{
// Failed
closesocket(s);
return NULL;
}
ifr.ifr_flags |= IFF_PROMISC;
if (ioctl(s, SIOCSIFFLAGS, &ifr) < 0)
{
// Failed
closesocket(s);
return NULL;
}
}
if (true)
{
int val = 1;
int ss_ret = setsockopt(s, SOL_PACKET, MY_PACKET_AUXDATA, &val, sizeof(val));
if (ss_ret < 0)
{
Debug("eth(%s): setsockopt: PACKET_AUXDATA failed.\n", name);
}
else
{
Debug("eth(%s): setsockopt: PACKET_AUXDATA ok.\n", name);
aux_ok = true;
}
}
e = ZeroMalloc(sizeof(ETH));
e->Name = CopyStr(name);
e->Title = CopyStr(name);
e->IfIndex = index;
e->Socket = s;
e->Linux_IsAuxDataSupported = aux_ok;
c = NewCancel();
UnixDeletePipe(c->pipe_read, c->pipe_write);
c->pipe_read = c->pipe_write = -1;
UnixSetSocketNonBlockingMode(s, true);
c->SpecialFlag = true;
c->pipe_read = s;
e->Cancel = c;
// Get MTU
e->InitialMtu = EthGetMtu(e);
if (tapmode == false)
{
if (GetGlobalServerFlag(GSF_LOCALBRIDGE_NO_DISABLE_OFFLOAD) == false)
{
bool b = false;
LockList(eth_offload_list);
{
if (IsInListStr(eth_offload_list, name) == false)
{
b = true;
Add(eth_offload_list, CopyStr(name));
}
}
UnlockList(eth_offload_list);
if (b)
{
// Disable hardware offloading
UnixDisableInterfaceOffload(name);
}
}
}
return e;
}