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nuttx/net/netdev/netdev_ioctl.c

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/****************************************************************************
* net/netdev/netdev_ioctl.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/net/net.h>
#include <nuttx/net/ip.h>
#include <net/if.h>
#include <net/route.h>
#include <net/ethernet.h>
#include <netinet/in.h>
#include <nuttx/net/netdev.h>
#include <nuttx/net/radiodev.h>
#include <nuttx/net/arp.h>
#ifdef CONFIG_NET_6LOWPAN
# include <nuttx/net/sixlowpan.h>
#endif
#include <sys/sockio.h>
#include <nuttx/net/igmp.h>
#ifdef CONFIG_NETDEV_WIRELESS_IOCTL
# include <nuttx/wireless/wireless.h>
#endif
#ifdef CONFIG_WIRELESS_BLUETOOTH
# include <nuttx/wireless/bluetooth/bt_ioctl.h>
#endif
#ifdef CONFIG_WIRELESS_IEEE802154
# include <nuttx/wireless/ieee802154/ieee802154_mac.h>
#endif
#ifdef CONFIG_WIRELESS_PKTRADIO
# include <nuttx/wireless/pktradio.h>
#endif
#include "arp/arp.h"
#include "socket/socket.h"
#include "netdev/netdev.h"
#include "devif/devif.h"
#include "igmp/igmp.h"
#include "icmpv6/icmpv6.h"
#include "route/route.h"
#include "netlink/netlink.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration */
#undef HAVE_WRITABLE_IPv4ROUTE
#undef HAVE_WRITABLE_IPv6ROUTE
#ifdef CONFIG_NET_ROUTE
# if defined(CONFIG_NET_IPv4) && !defined(CONFIG_ROUTE_IPv4_ROMROUTE)
# define HAVE_WRITABLE_IPv4ROUTE 1
# endif
# if defined(CONFIG_NET_IPv6) && !defined(CONFIG_ROUTE_IPv6_ROMROUTE)
# define HAVE_WRITABLE_IPv6ROUTE 1
# endif
#endif
#undef HAVE_IEEE802154_IOCTL
#undef HAVE_PKTRADIO_IOCTL
#undef HAVE_BLUETOOTH_IOCTL
#ifdef CONFIG_NETDEV_IOCTL
/* IEEE 802.15.4 6LoWPAN or raw packet support */
#if defined(CONFIG_NET_IEEE802154) || (defined(CONFIG_NET_6LOWPAN) && \
defined(CONFIG_WIRELESS_IEEE802154))
# define HAVE_IEEE802154_IOCTL 1
#endif
/* pktradio raw packet support not implemented */
#if defined(CONFIG_NET_6LOWPAN) && defined(CONFIG_WIRELESS_PKTRADIO)
# define HAVE_PKTRADIO_IOCTL 1
#endif
/* Bluetooth 6LoWPAN support not implemented */
#if defined(CONFIG_NET_BLUETOOTH)
# define HAVE_BLUETOOTH_IOCTL 1
#endif
#endif /* CONFIG_NETDEV_IOCTL */
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: ioctl_add_ipv4route
*
* Description:
* Add an IPv4 route to the routing table.
*
* Input Parameters:
* rentry - Describes the route to be added
*
****************************************************************************/
#ifdef HAVE_WRITABLE_IPv4ROUTE
static int ioctl_add_ipv4route(FAR struct rtentry *rtentry)
{
FAR struct sockaddr_in *addr;
in_addr_t target;
in_addr_t netmask;
in_addr_t router;
addr = (FAR struct sockaddr_in *)&rtentry->rt_dst;
target = (in_addr_t)addr->sin_addr.s_addr;
addr = (FAR struct sockaddr_in *)&rtentry->rt_genmask;
netmask = (in_addr_t)addr->sin_addr.s_addr;
addr = (FAR struct sockaddr_in *)&rtentry->rt_gateway;
router = (in_addr_t)addr->sin_addr.s_addr;
return net_addroute_ipv4(target, netmask, router);
}
#endif /* HAVE_WRITABLE_IPv4ROUTE */
/****************************************************************************
* Name: ioctl_add_ipv6route
*
* Description:
* Add an IPv6 route to the routing table.
*
* Input Parameters:
* rentry - Describes the route to be added
*
****************************************************************************/
#ifdef HAVE_WRITABLE_IPv6ROUTE
static int ioctl_add_ipv6route(FAR struct rtentry *rtentry)
{
FAR struct sockaddr_in6 *target;
FAR struct sockaddr_in6 *netmask;
FAR struct sockaddr_in6 *gateway;
net_ipv6addr_t router;
target = (FAR struct sockaddr_in6 *)&rtentry->rt_dst;
netmask = (FAR struct sockaddr_in6 *)&rtentry->rt_genmask;
/* The router is an optional argument */
gateway = (FAR struct sockaddr_in6 *)&rtentry->rt_gateway;
net_ipv6addr_copy(router, gateway->sin6_addr.s6_addr16);
return net_addroute_ipv6(target->sin6_addr.s6_addr16,
netmask->sin6_addr.s6_addr16, router);
}
#endif /* HAVE_WRITABLE_IPv6ROUTE */
/****************************************************************************
* Name: ioctl_del_ipv4route
*
* Description:
* Delete an IPv4 route to the routing table.
*
* Input Parameters:
* rentry - Describes the route to be deleted
*
****************************************************************************/
#ifdef HAVE_WRITABLE_IPv4ROUTE
static int ioctl_del_ipv4route(FAR struct rtentry *rtentry)
{
FAR struct sockaddr_in *addr;
in_addr_t target;
in_addr_t netmask;
addr = (FAR struct sockaddr_in *)&rtentry->rt_dst;
target = (in_addr_t)addr->sin_addr.s_addr;
addr = (FAR struct sockaddr_in *)&rtentry->rt_genmask;
netmask = (in_addr_t)addr->sin_addr.s_addr;
return net_delroute_ipv4(target, netmask);
}
#endif /* HAVE_WRITABLE_IPv4ROUTE */
/****************************************************************************
* Name: ioctl_del_ipv6route
*
* Description:
* Delete an IPv6 route to the routing table.
*
* Input Parameters:
* rentry - Describes the route to be deleted
*
****************************************************************************/
#ifdef HAVE_WRITABLE_IPv6ROUTE
static int ioctl_del_ipv6route(FAR struct rtentry *rtentry)
{
FAR struct sockaddr_in6 *target;
FAR struct sockaddr_in6 *netmask;
target = (FAR struct sockaddr_in6 *)&rtentry->rt_dst;
netmask = (FAR struct sockaddr_in6 *)&rtentry->rt_genmask;
return net_delroute_ipv6(target->sin6_addr.s6_addr16,
netmask->sin6_addr.s6_addr16);
}
#endif /* HAVE_WRITABLE_IPv6ROUTE */
/****************************************************************************
* Name: ioctl_get_ipv4addr
*
* Description:
* Copy IP addresses from device structure to user memory.
*
* Input Parameters:
* outaddr - Pointer to the user-provided memory to receive the address.
* inaddr - The source IP address in the device structure.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv4
static void ioctl_get_ipv4addr(FAR struct sockaddr *outaddr,
in_addr_t inaddr)
{
FAR struct sockaddr_in *dest = (FAR struct sockaddr_in *)outaddr;
dest->sin_family = AF_INET;
dest->sin_port = 0;
dest->sin_addr.s_addr = inaddr;
memset(dest->sin_zero, 0, sizeof(dest->sin_zero));
}
#endif
/****************************************************************************
* Name: ioctl_get_ipv4broadcast
*
* Description:
* Return the sub-net broadcast address to user memory.
*
* Input Parameters:
* outaddr - Pointer to the user-provided memory to receive the address.
* inaddr - The source IP address in the device structure.
* netmask - The netmask address mask in the device structure.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv4
static void ioctl_get_ipv4broadcast(FAR struct sockaddr *outaddr,
in_addr_t inaddr, in_addr_t netmask)
{
FAR struct sockaddr_in *dest = (FAR struct sockaddr_in *)outaddr;
dest->sin_family = AF_INET;
dest->sin_port = 0;
dest->sin_addr.s_addr = net_ipv4addr_broadcast(inaddr, netmask);
memset(dest->sin_zero, 0, sizeof(dest->sin_zero));
}
#endif
/****************************************************************************
* Name: ioctl_get_ipv6addr
*
* Description:
* Copy IP addresses from device structure to user memory.
*
* Input Parameters:
* outaddr - Pointer to the user-provided memory to receive the address.
* inaddr - The source IP address in the device structure.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv6
static void ioctl_get_ipv6addr(FAR struct sockaddr_storage *outaddr,
FAR const net_ipv6addr_t inaddr)
{
FAR struct sockaddr_in6 *dest = (FAR struct sockaddr_in6 *)outaddr;
dest->sin6_family = AF_INET6;
dest->sin6_port = 0;
memcpy(dest->sin6_addr.in6_u.u6_addr8, inaddr, 16);
}
#endif
/****************************************************************************
* Name: ioctl_set_ipv4addr
*
* Description:
* Copy IP addresses from user memory into the device structure
*
* Input Parameters:
* outaddr - Pointer to the source IP address in the device structure.
* inaddr - Pointer to the user-provided memory to containing the new IP
* address.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv4
static void ioctl_set_ipv4addr(FAR in_addr_t *outaddr,
FAR const struct sockaddr *inaddr)
{
FAR const struct sockaddr_in *src = (FAR const struct sockaddr_in *)inaddr;
*outaddr = src->sin_addr.s_addr;
}
#endif
/****************************************************************************
* Name: ioctl_set_ipv6addr
*
* Description:
* Copy IP addresses from user memory into the device structure
*
* Input Parameters:
* outaddr - Pointer to the source IP address in the device structure.
* inaddr - Pointer to the user-provided memory to containing the new IP
* address.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv6
static void ioctl_set_ipv6addr(FAR net_ipv6addr_t outaddr,
FAR const struct sockaddr_storage *inaddr)
{
FAR const struct sockaddr_in6 *src =
(FAR const struct sockaddr_in6 *)inaddr;
memcpy(outaddr, src->sin6_addr.in6_u.u6_addr8, 16);
}
#endif
/****************************************************************************
* Name: netdev_bluetooth_ioctl
*
* Description:
* Perform Bluetooth network device specific operations.
*
* Input Parameters:
* psock - Socket structure
* dev - Ethernet driver device structure
* cmd - The ioctl command
* req - The argument of the ioctl cmd
*
* Returned Value:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
#ifdef HAVE_BLUETOOTH_IOCTL
static int netdev_bluetooth_ioctl(FAR struct socket *psock, int cmd,
unsigned long arg)
{
FAR struct net_driver_s *dev;
FAR char *ifname;
int ret = -EINVAL;
if (arg != 0ul)
{
if (WL_IBLUETOOTHCMD(cmd))
{
/* Get the name of the Bluetooth device to receive the IOCTL
* command
*/
FAR struct btreq_s *btreq =
(FAR struct btreq_s *)((uintptr_t)arg);
ifname = btreq->btr_name;
}
else
{
/* Not a Bluetooth IOCTL command */
return -ENOTTY;
}
/* Find the device with this name */
dev = netdev_findbyname(ifname);
ret = -ENODEV;
if (dev != NULL && dev->d_lltype == NET_LL_BLUETOOTH)
{
/* Perform the device IOCTL */
ret = dev->d_ioctl(dev, cmd, arg);
}
}
return ret;
}
#endif
/****************************************************************************
* Name: netdev_iee802154_ioctl
*
* Description:
* Perform IEEE802.15.4 network device specific operations.
*
* Input Parameters:
* psock - Socket structure
* dev - Ethernet driver device structure
* cmd - The ioctl command
* req - The argument of the ioctl cmd
*
* Returned Value:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
#ifdef HAVE_IEEE802154_IOCTL
static int netdev_iee802154_ioctl(FAR struct socket *psock, int cmd,
unsigned long arg)
{
FAR struct net_driver_s *dev;
FAR char *ifname;
int ret = -ENOTTY;
if (arg != 0ul)
{
if (_MAC802154IOCVALID(cmd))
{
/* Get the IEEE802.15.4 MAC device to receive the radio IOCTL
* command
*/
FAR struct ieee802154_netmac_s *netmac =
(FAR struct ieee802154_netmac_s *)((uintptr_t)arg);
ifname = netmac->ifr_name;
}
else
{
/* Not an EEE802.15.4 MAC IOCTL command */
return -ENOTTY;
}
/* Find the device with this name */
dev = netdev_findbyname(ifname);
if (dev != NULL && dev->d_lltype == NET_LL_IEEE802154)
{
/* Perform the device IOCTL */
ret = dev->d_ioctl(dev, cmd, arg);
}
}
return ret;
}
#endif /* HAVE_IEEE802154_IOCTL */
/****************************************************************************
* Name: netdev_pktradio_ioctl
*
* Description:
* Perform non-IEEE802.15.4 packet radio network device specific operation.
*
* Input Parameters:
* psock - Socket structure
* dev - Ethernet driver device structure
* cmd - The ioctl command
* req - The argument of the ioctl cmd
*
* Returned Value:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
#ifdef HAVE_PKTRADIO_IOCTL
static int netdev_pktradio_ioctl(FAR struct socket *psock, int cmd,
unsigned long arg)
{
FAR struct net_driver_s *dev;
FAR char *ifname;
int ret = -ENOTTY;
if (arg != 0ul)
{
if (WL_ISPKTRADIOCMD(cmd))
{
/* Get the packet radio device to receive the radio IOCTL
* command
*/
FAR struct pktradio_ifreq_s *cmddata =
(FAR struct pktradio_ifreq_s *)((uintptr_t)arg);
ifname = cmddata->pifr_name;
}
else
{
/* Not a packet radio IOCTL command */
nwarn("WARNING: Not a packet radio IOCTL command: %d\n", cmd);
return -ENOTTY;
}
/* Find the device with this name */
dev = netdev_findbyname(ifname);
if (dev != NULL && dev->d_lltype == NET_LL_PKTRADIO)
{
/* Perform the device IOCTL */
ret = dev->d_ioctl(dev, cmd, arg);
}
}
return ret;
}
#endif /* HAVE_PKTRADIO_IOCTL */
/****************************************************************************
* Name: netdev_wifr_ioctl
*
* Description:
* Perform wireless network device specific operations.
*
* Input Parameters:
* psock Socket structure
* dev Ethernet driver device structure
* cmd The ioctl command
* req The argument of the ioctl cmd
*
* Returned Value:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
#if defined(CONFIG_NETDEV_IOCTL) && defined(CONFIG_NETDEV_WIRELESS_IOCTL)
static int netdev_wifr_ioctl(FAR struct socket *psock, int cmd,
FAR struct iwreq *req)
{
FAR struct net_driver_s *dev;
int ret = -ENOTTY;
/* Verify that this is a valid wireless network IOCTL command */
if (_WLIOCVALID(cmd) && (unsigned)_IOC_NR(cmd) <= WL_NNETCMDS)
{
/* Get the wireless device associated with the IOCTL command */
dev = netdev_findbyname(req->ifr_name);
if (dev != NULL)
{
/* Just forward the IOCTL to the wireless driver */
ret = dev->d_ioctl(dev, cmd, (unsigned long)(uintptr_t)req);
}
}
return ret;
}
#endif
/****************************************************************************
* Name: netdev_ifr_dev
*
* Description:
* Verify the struct ifreq and get the Ethernet device.
*
* Input Parameters:
* req - The argument of the ioctl cmd
*
* Returned Value:
* A pointer to the driver structure on success; NULL on failure.
*
****************************************************************************/
static FAR struct net_driver_s *netdev_ifr_dev(FAR struct ifreq *req)
{
if (req != NULL)
{
/* Find the network device associated with the device name
* in the request data.
*/
return netdev_findbyname(req->ifr_name);
}
return NULL;
}
/****************************************************************************
* Name: netdev_ifr_ioctl
*
* Description:
* Perform network device specific operations.
*
* Input Parameters:
* psock Socket structure
* cmd The ioctl command
* req The argument of the ioctl cmd
*
* Returned Value:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
static int netdev_ifr_ioctl(FAR struct socket *psock, int cmd,
FAR struct ifreq *req)
{
FAR struct net_driver_s *dev;
int ret = -EINVAL;
ninfo("cmd: %d\n", cmd);
net_lock();
/* Execute the command */
switch (cmd)
{
#ifdef CONFIG_NET_IPv4
case SIOCGIFADDR: /* Get IP address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
ioctl_get_ipv4addr(&req->ifr_addr, dev->d_ipaddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCSIFADDR: /* Set IP address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
ioctl_set_ipv4addr(&dev->d_ipaddr, &req->ifr_addr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCGIFDSTADDR: /* Get P-to-P address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
ioctl_get_ipv4addr(&req->ifr_dstaddr, dev->d_draddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCSIFDSTADDR: /* Set P-to-P address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
ioctl_set_ipv4addr(&dev->d_draddr, &req->ifr_dstaddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCGIFBRDADDR: /* Get broadcast IP address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
ioctl_get_ipv4broadcast(&req->ifr_broadaddr, dev->d_ipaddr,
dev->d_netmask);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCSIFBRDADDR: /* Set broadcast IP address */
{
ret = -ENOSYS;
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCGIFNETMASK: /* Get network mask */
{
dev = netdev_ifr_dev(req);
if (dev)
{
ioctl_get_ipv4addr(&req->ifr_addr, dev->d_netmask);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCSIFNETMASK: /* Set network mask */
{
dev = netdev_ifr_dev(req);
if (dev)
{
ioctl_set_ipv4addr(&dev->d_netmask, &req->ifr_addr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCGLIFADDR: /* Get IP address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_get_ipv6addr(&lreq->lifr_addr, dev->d_ipv6addr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCSLIFADDR: /* Set IP address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_set_ipv6addr(dev->d_ipv6addr, &lreq->lifr_addr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCGLIFDSTADDR: /* Get P-to-P address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_get_ipv6addr(&lreq->lifr_dstaddr, dev->d_ipv6draddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCSLIFDSTADDR: /* Set P-to-P address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_set_ipv6addr(dev->d_ipv6draddr, &lreq->lifr_dstaddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCGLIFBRDADDR: /* Get broadcast IP address */
case SIOCSLIFBRDADDR: /* Set broadcast IP address */
{
ret = -ENOSYS;
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCGLIFNETMASK: /* Get network mask */
{
dev = netdev_ifr_dev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_get_ipv6addr(&lreq->lifr_addr, dev->d_ipv6netmask);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCSLIFNETMASK: /* Set network mask */
{
dev = netdev_ifr_dev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_set_ipv6addr(dev->d_ipv6netmask, &lreq->lifr_addr);
ret = OK;
}
}
break;
#endif
case SIOCGLIFMTU: /* Get MTU size */
case SIOCGIFMTU: /* Get MTU size */
{
dev = netdev_ifr_dev(req);
if (dev)
{
req->ifr_mtu = NETDEV_PKTSIZE(dev);
ret = OK;
}
}
break;
#ifdef CONFIG_NET_ICMPv6_AUTOCONF
case SIOCIFAUTOCONF: /* Perform ICMPv6 auto-configuration */
{
dev = netdev_ifr_dev(req);
if (dev)
{
ret = icmpv6_autoconfig(dev);
}
}
break;
#endif
case SIOCSIFFLAGS: /* Sets the interface flags */
{
/* Is this a request to bring the interface up? */
dev = netdev_ifr_dev(req);
if (dev)
{
if ((req->ifr_flags & IFF_UP) != 0)
{
/* Yes.. bring the interface up */
ret = netdev_ifup(dev);
}
/* Is this a request to take the interface down? */
else if ((req->ifr_flags & IFF_DOWN) != 0)
{
/* Yes.. take the interface down */
ret = netdev_ifdown(dev);
}
}
else
{
ret = -ENODEV;
}
}
break;
case SIOCGIFFLAGS: /* Gets the interface flags */
{
dev = netdev_ifr_dev(req);
if (dev)
{
req->ifr_flags = dev->d_flags;
}
ret = OK;
}
break;
/* MAC address operations only make sense if Ethernet or 6LoWPAN are
* supported.
*/
#if defined(CONFIG_NET_ETHERNET) || defined(CONFIG_NET_6LOWPAN)
case SIOCGIFHWADDR: /* Get hardware address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
#ifdef CONFIG_NET_ETHERNET
if (dev->d_lltype == NET_LL_ETHERNET ||
dev->d_lltype == NET_LL_IEEE80211)
{
req->ifr_hwaddr.sa_family = NET_SOCK_FAMILY;
memcpy(req->ifr_hwaddr.sa_data,
dev->d_mac.ether.ether_addr_octet, IFHWADDRLEN);
ret = OK;
}
else
#endif
#ifdef CONFIG_NET_6LOWPAN
if (dev->d_lltype == NET_LL_IEEE802154 ||
dev->d_lltype == NET_LL_PKTRADIO)
{
req->ifr_hwaddr.sa_family = NET_SOCK_FAMILY;
memcpy(req->ifr_hwaddr.sa_data,
dev->d_mac.radio.nv_addr,
dev->d_mac.radio.nv_addrlen);
ret = OK;
}
else
#endif
{
nerr("Unsupported link layer\n");
}
}
}
break;
case SIOCSIFHWADDR: /* Set hardware address -- will not take effect until ifup */
{
dev = netdev_ifr_dev(req);
if (dev)
{
#ifdef CONFIG_NET_ETHERNET
if (dev->d_lltype == NET_LL_ETHERNET ||
dev->d_lltype == NET_LL_IEEE80211)
{
memcpy(dev->d_mac.ether.ether_addr_octet,
req->ifr_hwaddr.sa_data, IFHWADDRLEN);
ret = OK;
}
else
#endif
#ifdef CONFIG_NET_6LOWPAN
if (dev->d_lltype == NET_LL_IEEE802154 ||
dev->d_lltype == NET_LL_PKTRADIO)
{
FAR struct radio_driver_s *radio;
struct radiodev_properties_s properties;
/* Get the radio properties */
radio = (FAR struct radio_driver_s *)dev;
DEBUGASSERT(radio->r_properties != NULL);
ret = radio->r_properties(radio, &properties);
if (ret >= 0)
{
dev->d_mac.radio.nv_addrlen = properties.sp_addrlen;
memcpy(dev->d_mac.radio.nv_addr,
req->ifr_hwaddr.sa_data, NET_6LOWPAN_ADDRSIZE);
}
}
else
#endif
{
nerr("Unsupported link layer\n");
}
}
}
break;
#endif
case SIOCDIFADDR: /* Delete IP address */
{
dev = netdev_ifr_dev(req);
if (dev)
{
#ifdef CONFIG_NET_IPv4
dev->d_ipaddr = 0;
#endif
#ifdef CONFIG_NET_IPv6
memset(&dev->d_ipv6addr, 0, sizeof(net_ipv6addr_t));
#endif
ret = OK;
}
}
break;
case SIOCGIFCOUNT: /* Get number of devices */
{
req->ifr_count = netdev_count();
ret = -ENOSYS;
}
break;
#ifdef CONFIG_NET_IPv4
case SIOCGIFCONF: /* Return an interface list (IPv4) */
{
ret = netdev_ipv4_ifconf((FAR struct ifconf *)req);
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCGLIFCONF: /* Return an interface list (IPv6) */
{
ret = netdev_ipv6_ifconf((FAR struct lifconf *)req);
}
break;
#endif
#if defined(CONFIG_NETDEV_IOCTL) && defined(CONFIG_NETDEV_PHY_IOCTL)
#ifdef CONFIG_ARCH_PHY_INTERRUPT
case SIOCMIINOTIFY: /* Set up for PHY event notifications */
{
dev = netdev_ifr_dev(req);
if (dev && dev->d_ioctl)
{
struct mii_ioctl_notify_s *notify =
&req->ifr_ifru.ifru_mii_notify;
ret = dev->d_ioctl(dev, cmd, (unsigned long)(uintptr_t)notify);
}
}
break;
#endif
case SIOCGMIIPHY: /* Get address of MII PHY in use */
case SIOCGMIIREG: /* Get MII register via MDIO */
case SIOCSMIIREG: /* Set MII register via MDIO */
{
dev = netdev_ifr_dev(req);
if (dev && dev->d_ioctl)
{
struct mii_ioctl_data_s *mii_data =
&req->ifr_ifru.ifru_mii_data;
ret = dev->d_ioctl(dev, cmd,
(unsigned long)(uintptr_t)mii_data);
}
}
break;
#endif
#if defined(CONFIG_NETDEV_IOCTL) && defined(CONFIG_NETDEV_CAN_BITRATE_IOCTL)
case SIOCGCANBITRATE: /* Get bitrate from a CAN controller */
case SIOCSCANBITRATE: /* Set bitrate of a CAN controller */
{
dev = netdev_ifr_dev(req);
if (dev && dev->d_ioctl)
{
struct can_ioctl_data_s *can_bitrate_data =
&req->ifr_ifru.ifru_can_data;
ret = dev->d_ioctl(dev, cmd,
(unsigned long)(uintptr_t)can_bitrate_data);
}
}
break;
#endif
#if defined(CONFIG_NETDEV_IOCTL) && defined(CONFIG_NETDEV_CAN_FILTER_IOCTL)
case SIOCACANEXTFILTER: /* Add an extended-ID filter */
case SIOCDCANEXTFILTER: /* Delete an extended-ID filter */
case SIOCACANSTDFILTER: /* Add a standard-ID filter */
case SIOCDCANSTDFILTER: /* Delete a standard-ID filter */
{
dev = netdev_ifr_dev(req);
if (dev && dev->d_ioctl)
{
struct can_ioctl_filter_s *can_filter =
&req->ifr_ifru.ifru_can_filter;
ret = dev->d_ioctl(dev, cmd,
(unsigned long)(uintptr_t)can_filter);
}
}
break;
#endif
#ifdef CONFIG_NETDEV_IFINDEX
case SIOCGIFNAME: /* Get interface name */
{
dev = netdev_findbyindex(req->ifr_ifindex);
if (dev != NULL)
{
strlcpy(req->ifr_name, dev->d_ifname, IFNAMSIZ);
ret = OK;
}
else
{
ret = -ENODEV;
}
}
break;
case SIOCGIFINDEX: /* Index to name mapping */
{
dev = netdev_findbyname(req->ifr_name);
if (dev != NULL)
{
req->ifr_ifindex = dev->d_ifindex;
ret = OK;
}
else
{
ret = -ENODEV;
}
}
break;
#endif
default:
{
ret = -ENOTTY;
}
break;
}
net_unlock();
return ret;
}
/****************************************************************************
* Name: netdev_imsfdev
*
* Description:
* Verify the struct ip_msfilter and get the Ethernet device.
*
* Input Parameters:
* req - The argument of the ioctl cmd
*
* Returned Value:
* A pointer to the driver structure on success; NULL on failure.
*
****************************************************************************/
#ifdef CONFIG_NET_IGMP
static FAR struct net_driver_s *netdev_imsfdev(FAR struct ip_msfilter *imsf)
{
if (imsf == NULL)
{
return NULL;
}
/* Find the network device associated with the address of the IP address
* of the local device.
*/
return netdev_findby_lipv4addr(imsf->imsf_interface.s_addr);
}
#endif
/****************************************************************************
* Name: netdev_imsf_ioctl
*
* Description:
* Perform network device specific operations.
*
* Input Parameters:
* psock Socket structure
* dev Ethernet driver device structure
* cmd The ioctl command
* imsf The argument of the ioctl cmd
*
* Returned Value:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
#ifdef CONFIG_NET_IGMP
static int netdev_imsf_ioctl(FAR struct socket *psock, int cmd,
FAR struct ip_msfilter *imsf)
{
FAR struct net_driver_s *dev;
int ret = -EINVAL;
ninfo("cmd: %d\n", cmd);
/* Execute the command */
switch (cmd)
{
case SIOCSIPMSFILTER: /* Set source filter content */
{
dev = netdev_imsfdev(imsf);
if (dev)
{
if (imsf->imsf_fmode == MCAST_INCLUDE)
{
ret = igmp_joingroup(dev, &imsf->imsf_multiaddr);
}
else
{
DEBUGASSERT(imsf->imsf_fmode == MCAST_EXCLUDE);
ret = igmp_leavegroup(dev, &imsf->imsf_multiaddr);
}
}
}
break;
case SIOCGIPMSFILTER: /* Retrieve source filter addresses */
default:
ret = -ENOTTY;
break;
}
return ret;
}
#endif
/****************************************************************************
* Name: netdev_arp_callback
*
* Description:
* This is a callback that checks if the Ethernet network device has the
* indicated name
*
* Input Parameters:
* dev Ethernet driver device structure
* req The argument of the ioctl cmd
*
* Returned Value:
* 1 on success
* 0 on error
****************************************************************************/
#ifdef CONFIG_NET_ARP
static int netdev_arp_callback(FAR struct net_driver_s *dev, FAR void *arg)
{
FAR struct arpreq *req = arg;
FAR struct sockaddr_in *addr = (FAR struct sockaddr_in *)&req->arp_pa;
if (strncmp(dev->d_ifname, (FAR const char *)req->arp_dev,
sizeof(dev->d_ifname)))
{
return 0;
}
arp_update(dev, addr->sin_addr.s_addr,
(FAR uint8_t *)req->arp_ha.sa_data);
return 1;
}
#endif
/****************************************************************************
* Name: netdev_arp_ioctl
*
* Description:
* Perform ARP table specific operations.
*
* Input Parameters:
* psock Socket structure
* dev Ethernet driver device structure
* cmd The ioctl command
* req The argument of the ioctl cmd
*
* Returned Value:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
#ifdef CONFIG_NET_ARP
static int netdev_arp_ioctl(FAR struct socket *psock, int cmd,
FAR struct arpreq *req)
{
int ret;
/* Execute the command */
switch (cmd)
{
case SIOCSARP: /* Set an ARP mapping */
{
if (req != NULL &&
req->arp_pa.sa_family == AF_INET &&
req->arp_ha.sa_family == ARPHRD_ETHER)
{
/* Update any existing ARP table entry for this protocol
* address -OR- add a new ARP table entry if there is not.
*/
ret = netdev_foreach(netdev_arp_callback, req) ? OK : -EINVAL;
}
else
{
ret = -EINVAL;
}
}
break;
case SIOCDARP: /* Delete an ARP mapping */
{
if (req != NULL && req->arp_pa.sa_family == AF_INET)
{
FAR struct sockaddr_in *addr =
(FAR struct sockaddr_in *)&req->arp_pa;
/* Find the existing ARP entry for this protocol address. */
FAR struct arp_entry_s *entry =
arp_lookup(addr->sin_addr.s_addr);
if (entry != NULL)
{
/* The ARP table is fixed size; an entry is deleted
* by nullifying its protocol address.
*/
entry->at_ipaddr = 0;
ret = OK;
}
else
{
ret = -ENOENT;
}
}
else
{
ret = -EINVAL;
}
}
break;
case SIOCGARP: /* Get an ARP mapping */
{
if (req != NULL && req->arp_pa.sa_family == AF_INET)
{
FAR struct sockaddr_in *addr =
(FAR struct sockaddr_in *)&req->arp_pa;
/* Get the hardware address from an existing ARP table entry
* matching this protocol address.
*/
ret = arp_find(addr->sin_addr.s_addr,
(FAR struct ether_addr *)req->arp_ha.sa_data);
if (ret >= 0)
{
/* Return the mapped hardware address. */
req->arp_ha.sa_family = ARPHRD_ETHER;
ret = OK;
}
}
else
{
ret = -EINVAL;
}
}
break;
default:
ret = -ENOTTY;
break;
}
return ret;
}
#endif
/****************************************************************************
* Name: netdev_rt_ioctl
*
* Description:
* Perform routing table specific operations.
*
* Input Parameters:
* psock Socket structure
* dev Ethernet driver device structure
* cmd The ioctl command
* rtentry The argument of the ioctl cmd
*
* Returned Value:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
#ifdef CONFIG_NET_ROUTE
static int netdev_rt_ioctl(FAR struct socket *psock, int cmd,
FAR struct rtentry *rtentry)
{
int ret = -EAFNOSUPPORT;
/* Execute the command */
switch (cmd)
{
case SIOCADDRT: /* Add an entry to the routing table */
{
/* The target address and the netmask are required values */
if (rtentry == NULL)
{
return -EINVAL;
}
#ifdef CONFIG_NET_IPv4
#ifdef CONFIG_NET_IPv6
if (rtentry->rt_dst.ss_family == AF_INET)
#endif
{
#ifdef HAVE_WRITABLE_IPv4ROUTE
ret = ioctl_add_ipv4route(rtentry);
#else
ret = -EACCES;
#endif
}
#endif /* CONFIG_NET_IPv4 */
#ifdef CONFIG_NET_IPv6
#ifdef CONFIG_NET_IPv4
else
#endif
{
#ifdef HAVE_WRITABLE_IPv6ROUTE
ret = ioctl_add_ipv6route(rtentry);
#else
ret = -EACCES;
#endif
}
#endif /* CONFIG_NET_IPv6 */
}
break;
case SIOCDELRT: /* Delete an entry from the routing table */
{
/* The target address and the netmask are required values */
if (rtentry == 0)
{
return -EINVAL;
}
#ifdef CONFIG_NET_IPv4
#ifdef CONFIG_NET_IPv6
if (rtentry->rt_dst.ss_family == AF_INET)
#endif
{
#ifdef HAVE_WRITABLE_IPv4ROUTE
ret = ioctl_del_ipv4route(rtentry);
#else
ret = -EACCES;
#endif
}
#endif /* CONFIG_NET_IPv4 */
#ifdef CONFIG_NET_IPv6
#ifdef CONFIG_NET_IPv4
else
#endif
{
#ifdef HAVE_WRITABLE_IPv6ROUTE
ret = ioctl_del_ipv6route(rtentry);
#else
ret = -EACCES;
#endif
}
#endif /* CONFIG_NET_IPv6 */
}
break;
default:
ret = -ENOTTY;
break;
}
return ret;
}
#endif
/****************************************************************************
* Name: netdev_file_ioctl
*
* Description:
* Perform file ioctl operations.
*
* Parameters:
* psock Socket structure
* cmd The ioctl command
* arg The argument of the ioctl cmd
*
* Return:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
static int netdev_file_ioctl(FAR struct socket *psock, int cmd,
unsigned long arg)
{
int ret;
switch (cmd)
{
case FIONBIO:
{
FAR struct socket_conn_s *conn = psock->s_conn;
FAR int *nonblock = (FAR int *)(uintptr_t)arg;
sockcaps_t sockcaps;
/* Non-blocking is the only configurable option. And it applies
* only Unix domain sockets and to read operations on TCP/IP
* and UDP/IP sockets when read-ahead is enabled.
*/
DEBUGASSERT(psock->s_sockif != NULL &&
psock->s_sockif->si_sockcaps != NULL);
sockcaps = psock->s_sockif->si_sockcaps(psock);
if ((sockcaps & SOCKCAP_NONBLOCKING) != 0)
{
if (nonblock && *nonblock)
{
conn->s_flags |= _SF_NONBLOCK;
}
else
{
conn->s_flags &= ~_SF_NONBLOCK;
}
ret = -ENOTTY; /* let file_vioctl update f_oflags */
}
else
{
nerr("ERROR: Non-blocking not supported for this socket\n");
ret = -ENOSYS;
}
}
break;
default:
ret = -ENOTTY;
break;
}
return ret;
}
/****************************************************************************
* Name: netdev_ioctl
*
* Description:
* Perform user private ioctl operations.
*
* Parameters:
* psock Socket structure
* cmd The ioctl command
* arg The argument of the ioctl cmd
*
* Return:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
static int netdev_ioctl(FAR struct socket *psock, int cmd,
unsigned long arg)
{
if (psock->s_sockif && psock->s_sockif->si_ioctl)
{
ssize_t arglen;
arglen = net_ioctl_arglen(cmd);
if (arglen < 0)
{
return arglen;
}
return psock->s_sockif->si_ioctl(psock, cmd, (FAR void *)arg, arglen);
}
else
{
return -ENOTTY;
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: net_ioctl_arglen
*
* Description:
* Calculate the ioctl argument buffer length.
*
* Input Parameters:
*
* cmd The ioctl command
*
* Returned Value:
* The argument buffer length, or error code.
*
****************************************************************************/
ssize_t net_ioctl_arglen(int cmd)
{
switch (cmd)
{
case FIONBIO:
case FIONSPACE:
case FIONREAD:
return sizeof(int);
case SIOCGIFADDR:
case SIOCSIFADDR:
case SIOCGIFDSTADDR:
case SIOCSIFDSTADDR:
case SIOCGIFBRDADDR:
case SIOCSIFBRDADDR:
case SIOCGIFNETMASK:
case SIOCSIFNETMASK:
case SIOCGIFMTU:
case SIOCGIFHWADDR:
case SIOCSIFHWADDR:
case SIOCDIFADDR:
case SIOCGIFCOUNT:
case SIOCSIFFLAGS:
case SIOCGIFFLAGS:
return sizeof(struct ifreq);
case SIOCGLIFADDR:
case SIOCSLIFADDR:
case SIOCGLIFDSTADDR:
case SIOCSLIFDSTADDR:
case SIOCGLIFBRDADDR:
case SIOCSLIFBRDADDR:
case SIOCGLIFNETMASK:
case SIOCSLIFNETMASK:
case SIOCGLIFMTU:
case SIOCIFAUTOCONF:
return sizeof(struct lifreq);
case SIOCGIFCONF:
return sizeof(struct ifconf);
case SIOCGLIFCONF:
return sizeof(struct lifconf);
case SIOCGIPMSFILTER:
case SIOCSIPMSFILTER:
return sizeof(struct ip_msfilter);
case SIOCSARP:
case SIOCDARP:
case SIOCGARP:
return sizeof(struct arpreq);
case SIOCADDRT:
case SIOCDELRT:
return sizeof(struct rtentry);
case SIOCMIINOTIFY:
return sizeof(struct mii_ioctl_notify_s);
case SIOCGMIIPHY:
case SIOCGMIIREG:
case SIOCSMIIREG:
return sizeof(struct mii_ioctl_data_s);
default:
#ifdef CONFIG_NETDEV_IOCTL
# ifdef CONFIG_NETDEV_WIRELESS_IOCTL
if (_WLIOCVALID(cmd) && _IOC_NR(cmd) <= WL_NNETCMDS)
{
return sizeof(struct iwreq);
}
# endif
# ifdef CONFIG_WIRELESS_IEEE802154
if (_MAC802154IOCVALID(cmd))
{
return sizeof(struct ieee802154_netmac_s);
}
# endif
# ifdef CONFIG_WIRELESS_PKTRADIO
if (WL_ISPKTRADIOCMD(cmd))
{
return sizeof(struct pktradio_ifreq_s);
}
# endif
# ifdef CONFIG_WIRELESS_BLUETOOTH
if (WL_IBLUETOOTHCMD(cmd))
{
return sizeof(struct btreq_s);
}
# endif
#endif
return -ENOTTY;
}
}
/****************************************************************************
* Name: psock_ioctl and psock_vioctl
*
* Description:
* Perform network device specific operations.
*
* Input Parameters:
* psock A pointer to a NuttX-specific, internal socket structure
* cmd The ioctl command
* arg The argument of the ioctl cmd
*
* Returned Value:
* A non-negative value is returned on success; a negated errno value is
* returned on any failure to indicate the nature of the failure:
*
* EBADF
* 'psock' is not a valid, connected socket structure.
* EFAULT
* 'arg' references an inaccessible memory area.
* ENOTTY
* 'cmd' not valid.
* EINVAL
* 'arg' is not valid.
* ENOTTY
* 'sockfd' is not associated with a network device.
* ENOTTY
* The specified request does not apply to the kind of object that the
* descriptor 'sockfd' references.
*
****************************************************************************/
int psock_vioctl(FAR struct socket *psock, int cmd, va_list ap)
{
unsigned long arg;
int ret;
/* Verify that the psock corresponds to valid, allocated socket */
if (psock == NULL || psock->s_conn == NULL)
{
return -EBADF;
}
arg = va_arg(ap, unsigned long);
/* Check for socket specific ioctl command */
ret = netdev_ioctl(psock, cmd, arg);
/* Check for file ioctl command */
if (ret == -ENOTTY)
{
ret = netdev_file_ioctl(psock, cmd, arg);
}
/* Check for a standard network IOCTL command. */
if (ret == -ENOTTY)
{
ret = netdev_ifr_ioctl(psock, cmd, (FAR struct ifreq *)(uintptr_t)arg);
}
#if defined(CONFIG_NETDEV_IOCTL) && defined(CONFIG_NETDEV_WIRELESS_IOCTL)
/* Check for a wireless network command */
if (ret == -ENOTTY)
{
FAR struct iwreq *wifrreq;
wifrreq = (FAR struct iwreq *)((uintptr_t)arg);
ret = netdev_wifr_ioctl(psock, cmd, wifrreq);
}
#endif
#ifdef HAVE_IEEE802154_IOCTL
/* Check for a IEEE802.15.4 network device IOCTL command */
if (ret == -ENOTTY)
{
ret = netdev_iee802154_ioctl(psock, cmd, arg);
}
#endif
#ifdef HAVE_PKTRADIO_IOCTL
/* Check for a non-IEEE802.15.4 packet radio network device IOCTL command */
if (ret == -ENOTTY)
{
ret = netdev_pktradio_ioctl(psock, cmd, arg);
}
#endif
#ifdef HAVE_BLUETOOTH_IOCTL
/* Check for Bluetooth network device IOCTL command */
if (ret == -ENOTTY)
{
ret = netdev_bluetooth_ioctl(psock, cmd, arg);
}
#endif
#ifdef CONFIG_NET_IGMP
/* Check for address filtering commands */
if (ret == -ENOTTY)
{
ret = netdev_imsf_ioctl(psock, cmd,
(FAR struct ip_msfilter *)(uintptr_t)arg);
}
#endif
#ifdef CONFIG_NET_ARP
/* Check for ARP table IOCTL commands */
if (ret == -ENOTTY)
{
ret = netdev_arp_ioctl(psock, cmd,
(FAR struct arpreq *)(uintptr_t)arg);
}
#endif
#ifdef CONFIG_NET_ROUTE
/* Check for Routing table IOCTL commands */
if (ret == -ENOTTY)
{
ret = netdev_rt_ioctl(psock, cmd,
(FAR struct rtentry *)(uintptr_t)arg);
}
#endif
return ret;
}
int psock_ioctl(FAR struct socket *psock, int cmd, ...)
{
va_list ap;
int ret;
/* Setup to access the variable argument list */
va_start(ap, cmd);
/* Let psock_vfcntl() do the real work. The errno is not set on
* failures.
*/
ret = psock_vioctl(psock, cmd, ap);
va_end(ap);
return ret;
}
/****************************************************************************
* Name: netdev_ifup / netdev_ifdown
*
* Description:
* Bring the interface up/down
*
****************************************************************************/
int netdev_ifup(FAR struct net_driver_s *dev)
{
int ret = -ENOSYS;
/* Make sure that the device supports the d_ifup() method */
if (dev->d_ifup != NULL)
{
/* Is the interface already up? */
if ((dev->d_flags & IFF_UP) == 0)
{
/* No, bring the interface up now */
if ((ret = dev->d_ifup(dev)) == OK)
{
/* Mark the interface as up */
dev->d_flags |= IFF_UP;
/* Update the driver status */
netlink_device_notify(dev);
}
}
else
{
ret = OK;
}
}
return ret;
}
int netdev_ifdown(FAR struct net_driver_s *dev)
{
int ret = -ENOSYS;
/* Check sure that the device supports the d_ifdown() method */
if (dev->d_ifdown != NULL)
{
/* Is the interface already down? */
if ((dev->d_flags & IFF_UP) != 0)
{
/* No, take the interface down now */
if ((ret = dev->d_ifdown(dev)) == OK)
{
/* Mark the interface as down */
dev->d_flags &= ~(IFF_UP | IFF_RUNNING);
/* Update the driver status */
netlink_device_notify(dev);
/* Notify clients that the network has been taken down */
devif_dev_event(dev, NETDEV_DOWN);
#ifdef CONFIG_NETDOWN_NOTIFIER
/* Provide signal notifications to threads that want to be
* notified of the network down state via signal.
*/
netdown_notifier_signal(dev);
#endif
}
}
else
{
ret = OK;
}
}
return ret;
}
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