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Adding the ability to set the tun/tap link type #6

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Adding the ability to set the tun/tap link type #6

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50 changes: 50 additions & 0 deletions pytun.c
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Original file line number Diff line number Diff line change
Expand Up @@ -721,6 +721,33 @@ PyDoc_STRVAR(pytun_tuntap_persist_doc,
"persist(flag) -> None \"Make the TUN/TAP persistent if flags is True else\n\
make it non-persistent\"");

static PyObject* pytun_tuntap_setlinktype(PyObject* self, PyObject* args)
{
pytun_tuntap_t* tuntap = (pytun_tuntap_t*)self;
int ret;
int linktype;

if (!PyArg_ParseTuple(args, "i", &linktype))
{
return NULL;
}

Py_BEGIN_ALLOW_THREADS
ret = ioctl(tuntap->fd, TUNSETLINK, linktype);
Py_END_ALLOW_THREADS
if (ret < 0)
{
raise_error_from_errno();
return NULL;
}

Py_RETURN_NONE;
}

PyDoc_STRVAR(pytun_tuntap_setlinktype_doc,
"setlinktype(link_type) -> None \"Set the link type of the TUN/TAP\n\
For example: LINK_TYPE_ETHER\"");

static PyMethodDef pytun_tuntap_meth[] =
{
{"close", (PyCFunction)pytun_tuntap_close, METH_NOARGS, pytun_tuntap_close_doc},
Expand All @@ -730,6 +757,7 @@ static PyMethodDef pytun_tuntap_meth[] =
{"write", (PyCFunction)pytun_tuntap_write, METH_VARARGS, pytun_tuntap_write_doc},
{"fileno", (PyCFunction)pytun_tuntap_fileno, METH_NOARGS, pytun_tuntap_fileno_doc},
{"persist", (PyCFunction)pytun_tuntap_persist, METH_VARARGS, pytun_tuntap_persist_doc},
{"setlinktype", (PyCFunction)pytun_tuntap_setlinktype, METH_VARARGS, pytun_tuntap_setlinktype_doc},
{NULL, NULL, 0, NULL}
};

Expand Down Expand Up @@ -820,6 +848,28 @@ PyMODINIT_FUNC initpytun(void)
{
goto error;
}

if (PyModule_AddIntConstant(m, "IFF_MULTI_QUEUE", IFF_MULTI_QUEUE) != 0)
{
goto error;
}

if (PyModule_AddIntConstant(m, "LINK_TYPE_ETHER", ARPHRD_ETHER) != 0)
{
goto error;
}

if (PyModule_AddIntConstant(m, "LINK_TYPE_IEEE80211", ARPHRD_IEEE80211) != 0)
{
goto error;
}

if (PyModule_AddIntConstant(m, "LINK_TYPE_IEEE80211_RADIOTAP", ARPHRD_IEEE80211_RADIOTAP) != 0)
{
goto error;
}


#ifdef IFF_NO_PI
if (PyModule_AddIntConstant(m, "IFF_NO_PI", IFF_NO_PI) != 0)
{
Expand Down