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Merge pull request #1863 from metalefty/bsdunixvlan-bridge

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FreeBSD: Make sure to destroy tap device for bridge
This commit is contained in:
Ilya Shipitsin 2023-07-03 22:45:37 +02:00 committed by GitHub
commit 8ac021a38c
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 46 additions and 21 deletions
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8
src/Cedar/BridgeUnix.c
View File

@ -321,7 +321,7 @@ TOKEN_LIST *GetEthListLinux(bool enum_normal, bool enum_rawip)
{
if (IsInListStr(o, name) == false)
{
if (StartWith(name, "tap_") == false)
if (StartWith(name, UNIX_VLAN_BRIDGE_IFACE_PREFIX"_") == false)
{
Add(o, CopyStr(name));
}
@ -506,7 +506,7 @@ ETH *OpenEthLinux(char *name, bool local, bool tapmode, char *tapaddr)
{
#ifndef NO_VLAN
// In tap mode
VLAN *v = NewTap(name, tapaddr, true);
VLAN *v = NewBridgeTap(name, tapaddr, true);
if (v == NULL)
{
return NULL;
@ -1399,7 +1399,7 @@ ETH *OpenEthBSD(char *name, bool local, bool tapmode, char *tapaddr)
{
#ifndef NO_VLAN
// In tap mode
VLAN *v = NewTap(name, tapaddr, true);
VLAN *v = NewBridgeTap(name, tapaddr, true);
if (v == NULL)
{
return NULL;
@ -1475,7 +1475,7 @@ void CloseEth(ETH *e)
if (e->Tap != NULL)
{
#ifndef NO_VLAN
FreeTap(e->Tap);
FreeBridgeTap(e->Tap);
#endif // NO_VLAN
}

3
src/Cedar/Cedar.h
View File

@ -675,7 +675,8 @@
//
//////////////////////////////////////////////////////////////////////
#define UNIX_VLAN_IFACE_PREFIX "vpn" // Prefix of UNIX virual LAN card interface
#define UNIX_VLAN_CLIENT_IFACE_PREFIX "vpn" // Prefix of UNIX virtual LAN card interface (used for client)
#define UNIX_VLAN_BRIDGE_IFACE_PREFIX "tap" // Prefix of UNIX virtual LAN card interface (used for bridge destination)
#ifndef UNIX_BSD
#define TAP_FILENAME_1 "/dev/net/tun"

3
src/Cedar/SM.c
View File

@ -7987,7 +7987,8 @@ void SmBridgeDlgOnOk(HWND hWnd, SM_SERVER *s)
StrCpy(t.HubName, sizeof(t.HubName), hub);
t.TapMode = tapmode;
if (InStrEx(t.DeviceName, UNIX_VLAN_IFACE_PREFIX, false)
if (InStrEx(t.DeviceName, UNIX_VLAN_CLIENT_IFACE_PREFIX, false)
|| InStrEx(t.DeviceName, UNIX_VLAN_BRIDGE_IFACE_PREFIX, false)
|| InStrEx(t.DeviceName, "tun", false)
|| InStrEx(t.DeviceName, "tap", false))
{

46
src/Cedar/VLanUnix.c
View File

@ -263,7 +263,7 @@ void FreeVLan(VLAN *v)
}
// Create a tap
VLAN *NewTap(char *name, char *mac_address, bool create_up)
VLAN *NewBridgeTap(char *name, char *mac_address, bool create_up)
{
int fd;
VLAN *v;
@ -273,7 +273,7 @@ VLAN *NewTap(char *name, char *mac_address, bool create_up)
return NULL;
}
fd = UnixCreateTapDeviceEx(name, "tap", mac_address, create_up);
fd = UnixCreateTapDeviceEx(name, UNIX_VLAN_BRIDGE_IFACE_PREFIX, mac_address, create_up);
if (fd == -1)
{
return NULL;
@ -288,7 +288,7 @@ VLAN *NewTap(char *name, char *mac_address, bool create_up)
}
// Close the tap
void FreeTap(VLAN *v)
void FreeBridgeTap(VLAN *v)
{
// Validate arguments
if (v == NULL)
@ -296,7 +296,11 @@ void FreeTap(VLAN *v)
return;
}
close(v->fd);
UnixCloseTapDevice(v->fd);
#ifdef UNIX_BSD
UnixDestroyBridgeTapDevice(v->InstanceName);
#endif
FreeVLan(v);
}
@ -565,7 +569,7 @@ int UnixCreateTapDeviceEx(char *name, char *prefix, UCHAR *mac_address, bool cre
}
int UnixCreateTapDevice(char *name, UCHAR *mac_address, bool create_up)
{
return UnixCreateTapDeviceEx(name, UNIX_VLAN_IFACE_PREFIX, mac_address, create_up);
return UnixCreateTapDeviceEx(name, UNIX_VLAN_CLIENT_IFACE_PREFIX, mac_address, create_up);
}
// Close the tap device
@ -582,7 +586,7 @@ void UnixCloseTapDevice(int fd)
// Destroy the tap device (for FreeBSD)
// FreeBSD tap device is still plumbed after closing fd so need to destroy after close
void UnixDestroyTapDevice(char *name)
void UnixDestroyTapDeviceEx(char *name, char *prefix)
{
#ifdef UNIX_BSD
struct ifreq ifr;
@ -590,7 +594,7 @@ void UnixDestroyTapDevice(char *name)
int s;
Zero(&ifr, sizeof(ifr));
GenerateTunName(name, UNIX_VLAN_IFACE_PREFIX, eth_name, sizeof(eth_name));
GenerateTunName(name, prefix, eth_name, sizeof(eth_name));
StrCpy(ifr.ifr_name, sizeof(ifr.ifr_name), eth_name);
s = socket(AF_INET, SOCK_DGRAM, 0);
@ -604,9 +608,23 @@ void UnixDestroyTapDevice(char *name)
#endif // UNIX_BSD
}
void UnixDestroyBridgeTapDevice(char *name)
{
#ifdef UNIX_BSD
UnixDestroyTapDeviceEx(name, UNIX_VLAN_BRIDGE_IFACE_PREFIX);
#endif // UNIX_BSD
}
void UnixDestroyClientTapDevice(char *name)
{
#ifdef UNIX_BSD
UnixDestroyTapDeviceEx(name, UNIX_VLAN_CLIENT_IFACE_PREFIX);
#endif // UNIX_BSD
}
#else // NO_VLAN
void UnixCloseTapDevice(int fd)
void UnixCloseDevice(int fd)
{
}
@ -614,6 +632,10 @@ void UnixDestroyTapDevice(char *name)
{
}
void UnixDestroyTapDeviceEx(char *name, char *prefix)
{
}
int UnixCreateTapDeviceEx(char *name, char *prefix, UCHAR *mac_address, bool create_up)
{
return -1;
@ -701,7 +723,7 @@ bool UnixVLanCreateEx(char *name, char *prefix, UCHAR *mac_address, bool create_
}
bool UnixVLanCreate(char *name, UCHAR *mac_address, bool create_up)
{
return UnixVLanCreateEx(name, UNIX_VLAN_IFACE_PREFIX, mac_address, create_up);
return UnixVLanCreateEx(name, UNIX_VLAN_CLIENT_IFACE_PREFIX, mac_address, create_up);
}
// Set a VLAN up/down
@ -728,7 +750,7 @@ bool UnixVLanSetState(char* name, bool state_up)
return false;
}
GenerateTunName(name, UNIX_VLAN_IFACE_PREFIX, eth_name, sizeof(eth_name));
GenerateTunName(name, UNIX_VLAN_CLIENT_IFACE_PREFIX, eth_name, sizeof(eth_name));
Zero(&ifr, sizeof(ifr));
StrCpy(ifr.ifr_name, sizeof(ifr.ifr_name), eth_name);
@ -809,7 +831,7 @@ void UnixVLanDelete(char *name)
{
UnixCloseTapDevice(t->fd);
#ifdef UNIX_BSD
UnixDestroyTapDevice(t->Name);
UnixDestroyClientTapDevice(t->Name);
#endif
Delete(unix_vlan, t);
Free(t);
@ -858,7 +880,7 @@ void UnixVLanFree()
UnixCloseTapDevice(t->fd);
#ifdef UNIX_BSD
UnixDestroyTapDevice(t->Name);
UnixDestroyClientTapDevice(t->Name);
#endif
Free(t);
}

7
src/Cedar/VLanUnix.h
View File

@ -31,9 +31,9 @@ struct VLAN
// Function prototype
VLAN *NewVLan(char *instance_name, VLAN_PARAM *param);
VLAN *NewTap(char *name, char *mac_address, bool create_up);
VLAN *NewBridgeTap(char *name, char *mac_address, bool create_up);
void FreeVLan(VLAN *v);
void FreeTap(VLAN *v);
void FreeBridgeTap(VLAN *v);
CANCEL *VLanGetCancel(VLAN *v);
bool VLanGetNextPacket(VLAN *v, void **buf, UINT *size);
bool VLanPutPacket(VLAN *v, void *buf, UINT size);
@ -60,7 +60,8 @@ struct UNIX_VLAN_LIST
int UnixCreateTapDevice(char *name, UCHAR *mac_address, bool create_up);
int UnixCreateTapDeviceEx(char *name, char *prefix, UCHAR *mac_address, bool create_up);
void UnixCloseTapDevice(int fd);
void UnixDestroyTapDevice(char *name);
void UnixDestroyBridgeTapDevice(char *name);
void UnixDestroyClientTapDevice(char *name);
void UnixVLanInit();
void UnixVLanFree();
bool UnixVLanCreate(char *name, UCHAR *mac_address, bool create_up);