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circuitpython/ports/stm32/modnwcc3k.c
Damien George 6b51eb22c8 stm32: Consolidate include of genhdr/pins.h to single location in pin.h. 
genhdr/pins.h is an internal header file that defines all of the pin
objects and it's cleaner to have pin.h include it (where the struct's for
these objects are defined) rather than an explicit include by every user.
2018-03-27 20:25:24 +11:00

601 lines
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
#include <stdarg.h>
// CC3000 defines its own ENOBUFS (different to standard one!)
#undef ENOBUFS
#include "py/objtuple.h"
#include "py/objlist.h"
#include "py/stream.h"
#include "py/runtime.h"
#include "py/mperrno.h"
#include "py/mphal.h"
#include "lib/netutils/netutils.h"
#include "modnetwork.h"
#include "pin.h"
#include "spi.h"
#include "hci.h"
#include "socket.h"
#include "inet_ntop.h"
#include "inet_pton.h"
#include "ccspi.h"
#include "wlan.h"
#include "nvmem.h"
#include "netapp.h"
#include "patch_prog.h"
#define MAX_ADDRSTRLEN (128)
#define MAX_RX_PACKET (CC3000_RX_BUFFER_SIZE-CC3000_MINIMAL_RX_SIZE-1)
#define MAX_TX_PACKET (CC3000_TX_BUFFER_SIZE-CC3000_MINIMAL_TX_SIZE-1)
#define MAKE_SOCKADDR(addr, ip, port) \
sockaddr addr; \
addr.sa_family = AF_INET; \
addr.sa_data[0] = port >> 8; \
addr.sa_data[1] = port; \
addr.sa_data[2] = ip[0]; \
addr.sa_data[3] = ip[1]; \
addr.sa_data[4] = ip[2]; \
addr.sa_data[5] = ip[3];
#define UNPACK_SOCKADDR(addr, ip, port) \
port = (addr.sa_data[0] << 8) | addr.sa_data[1]; \
ip[0] = addr.sa_data[2]; \
ip[1] = addr.sa_data[3]; \
ip[2] = addr.sa_data[4]; \
ip[3] = addr.sa_data[5];
STATIC int cc3k_socket_ioctl(mod_network_socket_obj_t *socket, mp_uint_t request, mp_uint_t arg, int *_errno);
int CC3000_EXPORT(errno); // for cc3000 driver
STATIC volatile uint32_t fd_closed_state = 0;
STATIC volatile bool wlan_connected = false;
STATIC volatile bool ip_obtained = false;
STATIC int cc3k_get_fd_closed_state(int fd) {
return fd_closed_state & (1 << fd);
}
STATIC void cc3k_set_fd_closed_state(int fd) {
fd_closed_state |= 1 << fd;
}
STATIC void cc3k_reset_fd_closed_state(int fd) {
fd_closed_state &= ~(1 << fd);
}
STATIC void cc3k_callback(long event_type, char *data, unsigned char length) {
switch (event_type) {
case HCI_EVNT_WLAN_UNSOL_CONNECT:
wlan_connected = true;
break;
case HCI_EVNT_WLAN_UNSOL_DISCONNECT:
// link down
wlan_connected = false;
ip_obtained = false;
break;
case HCI_EVNT_WLAN_UNSOL_DHCP:
ip_obtained = true;
break;
case HCI_EVNT_BSD_TCP_CLOSE_WAIT:
// mark socket for closure
cc3k_set_fd_closed_state(data[0]);
break;
}
}
STATIC int cc3k_gethostbyname(mp_obj_t nic, const char *name, mp_uint_t len, uint8_t *out_ip) {
uint32_t ip;
// CC3000 gethostbyname is unreliable and usually returns -95 on first call
for (int retry = 5; CC3000_EXPORT(gethostbyname)((char*)name, len, &ip) < 0; retry--) {
if (retry == 0 || CC3000_EXPORT(errno) != -95) {
return CC3000_EXPORT(errno);
}
mp_hal_delay_ms(50);
}
if (ip == 0) {
// unknown host
return -2;
}
out_ip[0] = ip >> 24;
out_ip[1] = ip >> 16;
out_ip[2] = ip >> 8;
out_ip[3] = ip;
return 0;
}
STATIC int cc3k_socket_socket(mod_network_socket_obj_t *socket, int *_errno) {
if (socket->u_param.domain != MOD_NETWORK_AF_INET) {
*_errno = MP_EAFNOSUPPORT;
return -1;
}
mp_uint_t type;
switch (socket->u_param.type) {
case MOD_NETWORK_SOCK_STREAM: type = SOCK_STREAM; break;
case MOD_NETWORK_SOCK_DGRAM: type = SOCK_DGRAM; break;
case MOD_NETWORK_SOCK_RAW: type = SOCK_RAW; break;
default: *_errno = MP_EINVAL; return -1;
}
// open socket
int fd = CC3000_EXPORT(socket)(AF_INET, type, 0);
if (fd < 0) {
*_errno = CC3000_EXPORT(errno);
return -1;
}
// clear socket state
cc3k_reset_fd_closed_state(fd);
// store state of this socket
socket->u_state = fd;
// make accept blocking by default
int optval = SOCK_OFF;
socklen_t optlen = sizeof(optval);
CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_ACCEPT_NONBLOCK, &optval, optlen);
return 0;
}
STATIC void cc3k_socket_close(mod_network_socket_obj_t *socket) {
CC3000_EXPORT(closesocket)(socket->u_state);
}
STATIC int cc3k_socket_bind(mod_network_socket_obj_t *socket, byte *ip, mp_uint_t port, int *_errno) {
MAKE_SOCKADDR(addr, ip, port)
int ret = CC3000_EXPORT(bind)(socket->u_state, &addr, sizeof(addr));
if (ret != 0) {
*_errno = ret;
return -1;
}
return 0;
}
STATIC int cc3k_socket_listen(mod_network_socket_obj_t *socket, mp_int_t backlog, int *_errno) {
int ret = CC3000_EXPORT(listen)(socket->u_state, backlog);
if (ret != 0) {
*_errno = ret;
return -1;
}
return 0;
}
STATIC int cc3k_socket_accept(mod_network_socket_obj_t *socket, mod_network_socket_obj_t *socket2, byte *ip, mp_uint_t *port, int *_errno) {
// accept incoming connection
int fd;
sockaddr addr;
socklen_t addr_len = sizeof(addr);
if ((fd = CC3000_EXPORT(accept)(socket->u_state, &addr, &addr_len)) < 0) {
if (fd == SOC_IN_PROGRESS) {
*_errno = MP_EAGAIN;
} else {
*_errno = -fd;
}
return -1;
}
// clear socket state
cc3k_reset_fd_closed_state(fd);
// store state in new socket object
socket2->u_state = fd;
// return ip and port
// it seems CC3000 returns little endian for accept??
//UNPACK_SOCKADDR(addr, ip, *port);
*port = (addr.sa_data[1] << 8) | addr.sa_data[0];
ip[3] = addr.sa_data[2];
ip[2] = addr.sa_data[3];
ip[1] = addr.sa_data[4];
ip[0] = addr.sa_data[5];
return 0;
}
STATIC int cc3k_socket_connect(mod_network_socket_obj_t *socket, byte *ip, mp_uint_t port, int *_errno) {
MAKE_SOCKADDR(addr, ip, port)
int ret = CC3000_EXPORT(connect)(socket->u_state, &addr, sizeof(addr));
if (ret != 0) {
*_errno = CC3000_EXPORT(errno);
return -1;
}
return 0;
}
STATIC mp_uint_t cc3k_socket_send(mod_network_socket_obj_t *socket, const byte *buf, mp_uint_t len, int *_errno) {
if (cc3k_get_fd_closed_state(socket->u_state)) {
CC3000_EXPORT(closesocket)(socket->u_state);
*_errno = MP_EPIPE;
return -1;
}
// CC3K does not handle fragmentation, and will overflow,
// split the packet into smaller ones and send them out.
mp_int_t bytes = 0;
while (bytes < len) {
int n = MIN((len - bytes), MAX_TX_PACKET);
n = CC3000_EXPORT(send)(socket->u_state, (uint8_t*)buf + bytes, n, 0);
if (n <= 0) {
*_errno = CC3000_EXPORT(errno);
return -1;
}
bytes += n;
}
return bytes;
}
STATIC mp_uint_t cc3k_socket_recv(mod_network_socket_obj_t *socket, byte *buf, mp_uint_t len, int *_errno) {
// check the socket is open
if (cc3k_get_fd_closed_state(socket->u_state)) {
// socket is closed, but CC3000 may have some data remaining in buffer, so check
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(socket->u_state, &rfds);
cc3000_timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 1;
int nfds = CC3000_EXPORT(select)(socket->u_state + 1, &rfds, NULL, NULL, &tv);
if (nfds == -1 || !FD_ISSET(socket->u_state, &rfds)) {
// no data waiting, so close socket and return 0 data
CC3000_EXPORT(closesocket)(socket->u_state);
return 0;
}
}
// cap length at MAX_RX_PACKET
len = MIN(len, MAX_RX_PACKET);
// do the recv
int ret = CC3000_EXPORT(recv)(socket->u_state, buf, len, 0);
if (ret < 0) {
*_errno = CC3000_EXPORT(errno);
return -1;
}
return ret;
}
STATIC mp_uint_t cc3k_socket_sendto(mod_network_socket_obj_t *socket, const byte *buf, mp_uint_t len, byte *ip, mp_uint_t port, int *_errno) {
MAKE_SOCKADDR(addr, ip, port)
int ret = CC3000_EXPORT(sendto)(socket->u_state, (byte*)buf, len, 0, (sockaddr*)&addr, sizeof(addr));
if (ret < 0) {
*_errno = CC3000_EXPORT(errno);
return -1;
}
return ret;
}
STATIC mp_uint_t cc3k_socket_recvfrom(mod_network_socket_obj_t *socket, byte *buf, mp_uint_t len, byte *ip, mp_uint_t *port, int *_errno) {
sockaddr addr;
socklen_t addr_len = sizeof(addr);
mp_int_t ret = CC3000_EXPORT(recvfrom)(socket->u_state, buf, len, 0, &addr, &addr_len);
if (ret < 0) {
*_errno = CC3000_EXPORT(errno);
return -1;
}
UNPACK_SOCKADDR(addr, ip, *port);
return ret;
}
STATIC int cc3k_socket_setsockopt(mod_network_socket_obj_t *socket, mp_uint_t level, mp_uint_t opt, const void *optval, mp_uint_t optlen, int *_errno) {
int ret = CC3000_EXPORT(setsockopt)(socket->u_state, level, opt, optval, optlen);
if (ret < 0) {
*_errno = CC3000_EXPORT(errno);
return -1;
}
return 0;
}
STATIC int cc3k_socket_settimeout(mod_network_socket_obj_t *socket, mp_uint_t timeout_ms, int *_errno) {
int ret;
if (timeout_ms == 0 || timeout_ms == -1) {
int optval;
socklen_t optlen = sizeof(optval);
if (timeout_ms == 0) {
// set non-blocking mode
optval = SOCK_ON;
} else {
// set blocking mode
optval = SOCK_OFF;
}
ret = CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_RECV_NONBLOCK, &optval, optlen);
if (ret == 0) {
ret = CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_ACCEPT_NONBLOCK, &optval, optlen);
}
} else {
// set timeout
socklen_t optlen = sizeof(timeout_ms);
ret = CC3000_EXPORT(setsockopt)(socket->u_state, SOL_SOCKET, SOCKOPT_RECV_TIMEOUT, &timeout_ms, optlen);
}
if (ret != 0) {
*_errno = CC3000_EXPORT(errno);
return -1;
}
return 0;
}
STATIC int cc3k_socket_ioctl(mod_network_socket_obj_t *socket, mp_uint_t request, mp_uint_t arg, int *_errno) {
mp_uint_t ret;
if (request == MP_STREAM_POLL) {
mp_uint_t flags = arg;
ret = 0;
int fd = socket->u_state;
// init fds
fd_set rfds, wfds, xfds;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
FD_ZERO(&xfds);
// set fds if needed
if (flags & MP_STREAM_POLL_RD) {
FD_SET(fd, &rfds);
// A socked that just closed is available for reading. A call to
// recv() returns 0 which is consistent with BSD.
if (cc3k_get_fd_closed_state(fd)) {
ret |= MP_STREAM_POLL_RD;
}
}
if (flags & MP_STREAM_POLL_WR) {
FD_SET(fd, &wfds);
}
if (flags & MP_STREAM_POLL_HUP) {
FD_SET(fd, &xfds);
}
// call cc3000 select with minimum timeout
cc3000_timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 1;
int nfds = CC3000_EXPORT(select)(fd + 1, &rfds, &wfds, &xfds, &tv);
// check for error
if (nfds == -1) {
*_errno = CC3000_EXPORT(errno);
return -1;
}
// check return of select
if (FD_ISSET(fd, &rfds)) {
ret |= MP_STREAM_POLL_RD;
}
if (FD_ISSET(fd, &wfds)) {
ret |= MP_STREAM_POLL_WR;
}
if (FD_ISSET(fd, &xfds)) {
ret |= MP_STREAM_POLL_HUP;
}
} else {
*_errno = MP_EINVAL;
ret = -1;
}
return ret;
}
/******************************************************************************/
// MicroPython bindings; CC3K class
typedef struct _cc3k_obj_t {
mp_obj_base_t base;
} cc3k_obj_t;
STATIC const cc3k_obj_t cc3k_obj = {{(mp_obj_type_t*)&mod_network_nic_type_cc3k}};
// \classmethod \constructor(spi, pin_cs, pin_en, pin_irq)
// Initialise the CC3000 using the given SPI bus and pins and return a CC3K object.
//
// Note: pins were originally hard-coded to:
// PYBv1.0: init(pyb.SPI(2), pyb.Pin.board.Y5, pyb.Pin.board.Y4, pyb.Pin.board.Y3)
// [SPI on Y position; Y6=B13=SCK, Y7=B14=MISO, Y8=B15=MOSI]
//
// STM32F4DISC: init(pyb.SPI(2), pyb.Pin.cpu.A15, pyb.Pin.cpu.B10, pyb.Pin.cpu.B11)
STATIC mp_obj_t cc3k_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
// check arguments
mp_arg_check_num(n_args, n_kw, 4, 4, false);
// set the pins to use
SpiInit(
spi_from_mp_obj(args[0])->spi,
pin_find(args[1]),
pin_find(args[2]),
pin_find(args[3])
);
// initialize and start the module
wlan_init(cc3k_callback, NULL, NULL, NULL,
ReadWlanInterruptPin, SpiResumeSpi, SpiPauseSpi, WriteWlanPin);
if (wlan_start(0) != 0) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "failed to init CC3000 module"));
}
// set connection policy. this should be called explicitly by the user
// wlan_ioctl_set_connection_policy(0, 0, 0);
// Mask out all non-required events from the CC3000
wlan_set_event_mask(HCI_EVNT_WLAN_KEEPALIVE|
HCI_EVNT_WLAN_UNSOL_INIT|
HCI_EVNT_WLAN_ASYNC_PING_REPORT|
HCI_EVNT_WLAN_ASYNC_SIMPLE_CONFIG_DONE);
// register with network module
mod_network_register_nic((mp_obj_t)&cc3k_obj);
return (mp_obj_t)&cc3k_obj;
}
// method connect(ssid, key=None, *, security=WPA2, bssid=None)
STATIC mp_obj_t cc3k_connect(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_ssid, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_key, MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_security, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = WLAN_SEC_WPA2} },
{ MP_QSTR_bssid, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
};
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
// get ssid
size_t ssid_len;
const char *ssid = mp_obj_str_get_data(args[0].u_obj, &ssid_len);
// get key and sec
size_t key_len = 0;
const char *key = NULL;
mp_uint_t sec = WLAN_SEC_UNSEC;
if (args[1].u_obj != mp_const_none) {
key = mp_obj_str_get_data(args[1].u_obj, &key_len);
sec = args[2].u_int;
}
// get bssid
const char *bssid = NULL;
if (args[3].u_obj != mp_const_none) {
bssid = mp_obj_str_get_str(args[3].u_obj);
}
// connect to AP
if (wlan_connect(sec, (char*)ssid, ssid_len, (uint8_t*)bssid, (uint8_t*)key, key_len) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "could not connect to ssid=%s, sec=%d, key=%s\n", ssid, sec, key));
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(cc3k_connect_obj, 1, cc3k_connect);
STATIC mp_obj_t cc3k_disconnect(mp_obj_t self_in) {
// should we check return value?
wlan_disconnect();
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_disconnect_obj, cc3k_disconnect);
STATIC mp_obj_t cc3k_isconnected(mp_obj_t self_in) {
return mp_obj_new_bool(wlan_connected && ip_obtained);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_isconnected_obj, cc3k_isconnected);
STATIC mp_obj_t cc3k_ifconfig(mp_obj_t self_in) {
tNetappIpconfigRetArgs ipconfig;
netapp_ipconfig(&ipconfig);
// render MAC address
VSTR_FIXED(mac_vstr, 18);
const uint8_t *mac = ipconfig.uaMacAddr;
vstr_printf(&mac_vstr, "%02x:%02x:%02x:%02x:%02x:%02x", mac[5], mac[4], mac[3], mac[2], mac[1], mac[0]);
// create and return tuple with ifconfig info
mp_obj_t tuple[7] = {
netutils_format_ipv4_addr(ipconfig.aucIP, NETUTILS_LITTLE),
netutils_format_ipv4_addr(ipconfig.aucSubnetMask, NETUTILS_LITTLE),
netutils_format_ipv4_addr(ipconfig.aucDefaultGateway, NETUTILS_LITTLE),
netutils_format_ipv4_addr(ipconfig.aucDNSServer, NETUTILS_LITTLE),
netutils_format_ipv4_addr(ipconfig.aucDHCPServer, NETUTILS_LITTLE),
mp_obj_new_str(mac_vstr.buf, mac_vstr.len),
mp_obj_new_str((const char*)ipconfig.uaSSID, strlen((const char*)ipconfig.uaSSID)),
};
return mp_obj_new_tuple(MP_ARRAY_SIZE(tuple), tuple);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_ifconfig_obj, cc3k_ifconfig);
STATIC mp_obj_t cc3k_patch_version(mp_obj_t self_in) {
uint8_t pver[2];
mp_obj_tuple_t *t_pver;
nvmem_read_sp_version(pver);
t_pver = mp_obj_new_tuple(2, NULL);
t_pver->items[0] = mp_obj_new_int(pver[0]);
t_pver->items[1] = mp_obj_new_int(pver[1]);
return t_pver;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_patch_version_obj, cc3k_patch_version);
STATIC mp_obj_t cc3k_patch_program(mp_obj_t self_in, mp_obj_t key_in) {
const char *key = mp_obj_str_get_str(key_in);
if (key[0] == 'p' && key[1] == 'g' && key[2] == 'm' && key[3] == '\0') {
patch_prog_start();
} else {
mp_print_str(&mp_plat_print, "pass 'pgm' as argument in order to program\n");
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(cc3k_patch_program_obj, cc3k_patch_program);
STATIC const mp_rom_map_elem_t cc3k_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_connect), MP_ROM_PTR(&cc3k_connect_obj) },
{ MP_ROM_QSTR(MP_QSTR_disconnect), MP_ROM_PTR(&cc3k_disconnect_obj) },
{ MP_ROM_QSTR(MP_QSTR_isconnected), MP_ROM_PTR(&cc3k_isconnected_obj) },
{ MP_ROM_QSTR(MP_QSTR_ifconfig), MP_ROM_PTR(&cc3k_ifconfig_obj) },
{ MP_ROM_QSTR(MP_QSTR_patch_version), MP_ROM_PTR(&cc3k_patch_version_obj) },
{ MP_ROM_QSTR(MP_QSTR_patch_program), MP_ROM_PTR(&cc3k_patch_program_obj) },
// class constants
{ MP_ROM_QSTR(MP_QSTR_WEP), MP_ROM_INT(WLAN_SEC_WEP) },
{ MP_ROM_QSTR(MP_QSTR_WPA), MP_ROM_INT(WLAN_SEC_WPA) },
{ MP_ROM_QSTR(MP_QSTR_WPA2), MP_ROM_INT(WLAN_SEC_WPA2) },
};
STATIC MP_DEFINE_CONST_DICT(cc3k_locals_dict, cc3k_locals_dict_table);
const mod_network_nic_type_t mod_network_nic_type_cc3k = {
.base = {
{ &mp_type_type },
.name = MP_QSTR_CC3K,
.make_new = cc3k_make_new,
.locals_dict = (mp_obj_dict_t*)&cc3k_locals_dict,
},
.gethostbyname = cc3k_gethostbyname,
.socket = cc3k_socket_socket,
.close = cc3k_socket_close,
.bind = cc3k_socket_bind,
.listen = cc3k_socket_listen,
.accept = cc3k_socket_accept,
.connect = cc3k_socket_connect,
.send = cc3k_socket_send,
.recv = cc3k_socket_recv,
.sendto = cc3k_socket_sendto,
.recvfrom = cc3k_socket_recvfrom,
.setsockopt = cc3k_socket_setsockopt,
.settimeout = cc3k_socket_settimeout,
.ioctl = cc3k_socket_ioctl,
};
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