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extmod/modlwip: Add ioctl method to socket, with poll implementation. 

Implementation of polling may need further fine tuning, but basic
functionality works (tested on esp8266).
This commit is contained in:
Damien George 2016-12-02 16:41:51 +11:00
parent 2d329c4a56
commit cb53226b0c
1 changed files with 29 additions and 0 deletions
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29
extmod/modlwip.c
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@ -1127,6 +1127,34 @@ STATIC mp_uint_t lwip_socket_write(mp_obj_t self_in, const void *buf, mp_uint_t
return MP_STREAM_ERROR;
}
STATIC mp_uint_t lwip_socket_ioctl(mp_obj_t self_in, mp_uint_t request, uintptr_t arg, int *errcode) {
lwip_socket_obj_t *socket = self_in;
mp_uint_t ret;
if (request == MP_STREAM_POLL) {
uintptr_t flags = arg;
ret = 0;
if (flags & MP_STREAM_POLL_RD && socket->incoming.pbuf != NULL) {
ret |= MP_STREAM_POLL_RD;
}
if (flags & MP_STREAM_POLL_WR && tcp_sndbuf(socket->pcb.tcp) > 0) {
ret |= MP_STREAM_POLL_WR;
}
if (flags & MP_STREAM_POLL_HUP && socket->state == STATE_PEER_CLOSED) {
ret |= MP_STREAM_POLL_HUP;
}
} else {
*errcode = MP_EINVAL;
ret = MP_STREAM_ERROR;
}
return ret;
}
STATIC const mp_map_elem_t lwip_socket_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___del__), (mp_obj_t)&lwip_socket_close_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_close), (mp_obj_t)&lwip_socket_close_obj },
@ -1153,6 +1181,7 @@ STATIC MP_DEFINE_CONST_DICT(lwip_socket_locals_dict, lwip_socket_locals_dict_tab
STATIC const mp_stream_p_t lwip_socket_stream_p = {
.read = lwip_socket_read,
.write = lwip_socket_write,
.ioctl = lwip_socket_ioctl,
};
STATIC const mp_obj_type_t lwip_socket_type = {