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netinit.c
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netinit.c
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/****************************************************************************
* apps/netutils/netinit/netinit.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>
/* Is network initialization debug forced on? */
#ifdef CONFIG_NETINIT_DEBUG
# undef CONFIG_DEBUG_INFO
# define CONFIG_DEBUG_INFO 1
# undef CONFIG_DEBUG_NET
# define CONFIG_DEBUG_NET 1
#endif
#include <sys/ioctl.h>
#include <stdint.h>
#include <string.h>
#include <pthread.h>
#include <semaphore.h>
#include <signal.h>
#include <assert.h>
#include <debug.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <nuttx/net/mii.h>
#include "netutils/netlib.h"
#if defined(CONFIG_NETUTILS_DHCPC) || defined(CONFIG_NETINIT_DNS)
# include "netutils/dhcpc.h"
#endif
#ifdef CONFIG_NET_6LOWPAN
# include <nuttx/net/sixlowpan.h>
#endif
#ifdef CONFIG_NET_IEEE802154
# include <nuttx/net/ieee802154.h>
#endif
#ifdef CONFIG_NETUTILS_NTPCLIENT
# include "netutils/ntpclient.h"
#endif
#if defined(CONFIG_FSUTILS_IPCFG)
# include "fsutils/ipcfg.h"
#endif
#include "netutils/netinit.h"
#ifdef CONFIG_NETUTILS_NETINIT
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Pick one and at most one supported link layer so that all decisions are
* made consistently.
*
* NOTE: Ethernet should always be selected with IEEE 802.11
*/
#if defined(CONFIG_NET_ETHERNET)
# undef CONFIG_NET_6LOWPAN
# undef CONFIG_NET_SLIP
# undef CONFIG_NET_TUN
# undef CONFIG_NET_LOCAL
# undef CONFIG_NET_USRSOCK
# undef CONFIG_NET_IEEE802154
# undef CONFIG_NET_CAN
# undef CONFIG_NET_LOOPBACK
#elif defined(CONFIG_NET_6LOWPAN)
# undef CONFIG_NET_SLIP
# undef CONFIG_NET_TUN
# undef CONFIG_NET_LOCAL
# undef CONFIG_NET_USRSOCK
# undef CONFIG_NET_IEEE802154
# undef CONFIG_NET_CAN
# undef CONFIG_NET_LOOPBACK
#elif defined(CONFIG_NET_SLIP)
# undef CONFIG_NET_TUN
# undef CONFIG_NET_LOCAL
# undef CONFIG_NET_USRSOCK
# undef CONFIG_NET_IEEE802154
# undef CONFIG_NET_CAN
# undef CONFIG_NET_LOOPBACK
#elif defined(CONFIG_NET_TUN)
# undef CONFIG_NET_LOCAL
# undef CONFIG_NET_USRSOCK
# undef CONFIG_NET_IEEE802154
# undef CONFIG_NET_CAN
# undef CONFIG_NET_LOOPBACK
#elif defined(CONFIG_NET_LOCAL)
# undef CONFIG_NET_USRSOCK
# undef CONFIG_NET_IEEE802154
# undef CONFIG_NET_CAN
# undef CONFIG_NET_LOOPBACK
#elif defined(CONFIG_NET_USRSOCK)
# undef CONFIG_NET_IEEE802154
# undef CONFIG_NET_CAN
# undef CONFIG_NET_LOOPBACK
#elif defined(CONFIG_NET_IEEE802154)
# undef CONFIG_NET_CAN
# undef CONFIG_NET_LOOPBACK
#elif defined(CONFIG_NET_CAN)
# undef CONFIG_NET_LOOPBACK
#endif
/* Only Ethernet and 6LoWPAN have MAC layer addresses */
#undef HAVE_MAC
#if defined(CONFIG_NET_ETHERNET) || defined(CONFIG_NET_6LOWPAN)
# define HAVE_MAC 1
#endif
/* Currently there is only logic in 6LoWPAN configurations to
* set the IEEE 802.15.4 addresses.
*/
#undef HAVE_EADDR
#if defined(CONFIG_NET_6LOWPAN)
# if defined(CONFIG_WIRELESS_IEEE802154)
# define HAVE_EADDR 1
# elif defined(CONFIG_WIRELESS_PKTRADIO)
# warning Missing logic
# endif
#endif
/* Provide a default DNS address */
#if defined(CONFIG_NETINIT_DRIPADDR) && !defined(CONFIG_NETINIT_DNSIPADDR)
# define CONFIG_NETINIT_DNSIPADDR CONFIG_NETINIT_DRIPADDR
#endif
/* Select the single network device name supported this this network
* initialization logic. If multiple interfaces are present with different
* link types, the order of definition in the following conditional
* logic will select the one interface that will be used (which might
* not be the one that you want).
*/
#undef NETINIT_HAVE_NETDEV
#if defined(CONFIG_DRIVERS_IEEE80211) /* Usually also has CONFIG_NET_ETHERNET */
# define NET_DEVNAME "wlan0"
# define NETINIT_HAVE_NETDEV
#elif defined(CONFIG_NET_ETHERNET)
# define NET_DEVNAME "eth0"
# define NETINIT_HAVE_NETDEV
#elif defined(CONFIG_NET_6LOWPAN) || defined(CONFIG_NET_IEEE802154)
# define NET_DEVNAME "wpan0"
# define NETINIT_HAVE_NETDEV
#elif defined(CONFIG_NET_BLUETOOTH)
# define NET_DEVNAME "bnep0"
# define NETINIT_HAVE_NETDEV
#elif defined(CONFIG_NET_SLIP)
# define NET_DEVNAME "sl0"
# ifndef CONFIG_NETINIT_NOMAC
# error "CONFIG_NETINIT_NOMAC must be defined for SLIP"
# endif
# define NETINIT_HAVE_NETDEV
#elif defined(CONFIG_NET_TUN)
# define NET_DEVNAME "tun0"
# define NETINIT_HAVE_NETDEV
#elif defined(CONFIG_NET_LOCAL)
# define NET_DEVNAME "lo"
# define NETINIT_HAVE_NETDEV
#elif defined(CONFIG_NET_CAN)
# define NET_DEVNAME "can0"
# define NETINIT_HAVE_NETDEV
#endif
/* If we have no network device (perhaps only USRSOCK, local loopback, or
* Netlink sockets), then we cannot support the network monitor.
*/
#ifndef NETINIT_HAVE_NETDEV
# undef CONFIG_NETINIT_MONITOR
#endif
/* We need a valid IP domain (any domain) to create a socket that we can use
* to communicate with the network device.
*/
#if defined(CONFIG_NET_IPv4)
# define AF_INETX AF_INET
#elif defined(CONFIG_NET_IPv6)
# define AF_INETX AF_INET6
#endif
/* While the network is up, the network monitor really does nothing. It
* will wait for a very long time while waiting, it can be awakened by a
* signal indicating a change in network status.
*/
#define LONG_TIME_SEC (60*60) /* One hour in seconds */
#define SHORT_TIME_SEC (2) /* 2 seconds */
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef CONFIG_NETINIT_MONITOR
static sem_t g_notify_sem;
#endif
#ifdef CONFIG_NETUTILS_DHCPC
bool g_use_dhcpc;
#endif
#if defined(CONFIG_NET_IPv6) && !defined(CONFIG_NET_ICMPv6_AUTOCONF) && \
!defined(CONFIG_NET_6LOWPAN)
/* Host IPv6 address */
static const uint16_t g_ipv6_hostaddr[8] =
{
HTONS(CONFIG_NETINIT_IPv6ADDR_1),
HTONS(CONFIG_NETINIT_IPv6ADDR_2),
HTONS(CONFIG_NETINIT_IPv6ADDR_3),
HTONS(CONFIG_NETINIT_IPv6ADDR_4),
HTONS(CONFIG_NETINIT_IPv6ADDR_5),
HTONS(CONFIG_NETINIT_IPv6ADDR_6),
HTONS(CONFIG_NETINIT_IPv6ADDR_7),
HTONS(CONFIG_NETINIT_IPv6ADDR_8),
};
/* Default routine IPv6 address */
static const uint16_t g_ipv6_draddr[8] =
{
HTONS(CONFIG_NETINIT_DRIPv6ADDR_1),
HTONS(CONFIG_NETINIT_DRIPv6ADDR_2),
HTONS(CONFIG_NETINIT_DRIPv6ADDR_3),
HTONS(CONFIG_NETINIT_DRIPv6ADDR_4),
HTONS(CONFIG_NETINIT_DRIPv6ADDR_5),
HTONS(CONFIG_NETINIT_DRIPv6ADDR_6),
HTONS(CONFIG_NETINIT_DRIPv6ADDR_7),
HTONS(CONFIG_NETINIT_DRIPv6ADDR_8),
};
/* IPv6 netmask */
static const uint16_t g_ipv6_netmask[8] =
{
HTONS(CONFIG_NETINIT_IPv6NETMASK_1),
HTONS(CONFIG_NETINIT_IPv6NETMASK_2),
HTONS(CONFIG_NETINIT_IPv6NETMASK_3),
HTONS(CONFIG_NETINIT_IPv6NETMASK_4),
HTONS(CONFIG_NETINIT_IPv6NETMASK_5),
HTONS(CONFIG_NETINIT_IPv6NETMASK_6),
HTONS(CONFIG_NETINIT_IPv6NETMASK_7),
HTONS(CONFIG_NETINIT_IPv6NETMASK_8),
};
#endif /* CONFIG_NET_IPv6 && !CONFIG_NET_ICMPv6_AUTOCONF && !CONFIG_NET_6LOWPAN */
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: netinit_set_macaddr
*
* Description:
* Set the hardware MAC address if the hardware is not capable of doing
* that for itself.
*
****************************************************************************/
#if defined(NETINIT_HAVE_NETDEV) && defined(CONFIG_NETINIT_NOMAC) && \
defined(HAVE_MAC)
static void netinit_set_macaddr(void)
{
#if defined(CONFIG_NET_ETHERNET)
uint8_t mac[IFHWADDRLEN];
#elif defined(HAVE_EADDR)
uint8_t eaddr[8];
#endif
/* Many embedded network interfaces must have a software assigned MAC */
#if defined(CONFIG_NET_ETHERNET)
/* Use the configured, fixed MAC address */
mac[0] = (CONFIG_NETINIT_MACADDR_2 >> (8 * 1)) & 0xff;
mac[1] = (CONFIG_NETINIT_MACADDR_2 >> (8 * 0)) & 0xff;
mac[2] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 3)) & 0xff;
mac[3] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 2)) & 0xff;
mac[4] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 1)) & 0xff;
mac[5] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 0)) & 0xff;
/* Set the MAC address */
netlib_setmacaddr(NET_DEVNAME, mac);
#elif defined(HAVE_EADDR)
/* Use the configured, fixed extended address */
eaddr[0] = (CONFIG_NETINIT_MACADDR_2 >> (8 * 3)) & 0xff;
eaddr[1] = (CONFIG_NETINIT_MACADDR_2 >> (8 * 2)) & 0xff;
eaddr[2] = (CONFIG_NETINIT_MACADDR_2 >> (8 * 1)) & 0xff;
eaddr[3] = (CONFIG_NETINIT_MACADDR_2 >> (8 * 0)) & 0xff;
eaddr[4] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 3)) & 0xff;
eaddr[5] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 2)) & 0xff;
eaddr[6] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 1)) & 0xff;
eaddr[7] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 0)) & 0xff;
/* Set the 6LoWPAN extended address */
netlib_seteaddr(NET_DEVNAME, eaddr);
#endif /* CONFIG_NET_ETHERNET or HAVE_EADDR */
}
#else
# define netinit_set_macaddr()
#endif
/****************************************************************************
* Name: netinit_set_ipv4addrs
*
* Description:
* Setup IPv4 addresses.
*
****************************************************************************/
#if defined(NETINIT_HAVE_NETDEV) && !defined(CONFIG_NET_6LOWPAN) && ! \
defined(CONFIG_NET_IEEE802154) && defined(CONFIG_NET_IPv4)
static inline void netinit_set_ipv4addrs(void)
{
struct in_addr addr;
#ifdef CONFIG_FSUTILS_IPCFG
struct ipv4cfg_s ipv4cfg;
int ret;
/* Attempt to obtain IPv4 address configuration from the IP configuration
* file.
*/
ret = ipcfg_read(NET_DEVNAME, (FAR struct ipcfg_s *)&ipv4cfg, AF_INET);
#ifdef CONFIG_NETUTILS_DHCPC
if (ret >= 0 && ipv4cfg.proto != IPv4PROTO_NONE)
#else
if (ret >= 0 && IPCFG_HAVE_STATIC(ipv4cfg.proto))
#endif
{
/* Check if we are using DHCPC */
#ifdef CONFIG_NETUTILS_DHCPC
if (IPCFG_USE_DHCPC(ipv4cfg.proto))
{
g_use_dhcpc = true;
addr.s_addr = 0;
}
else
#endif
{
/* We are not using DHCPC. We need an IP address */
#ifdef CONFIG_NETINIT_IPADDR
/* Check if we have a static IP address in the configuration file */
if (IPCFG_HAVE_STATIC(ipv4cfg.proto))
{
addr.s_addr = ipv4cfg.ipaddr;
}
else
{
/* This is not a good option, but in this case what else can
* we do?
*/
addr.s_addr = HTONL(CONFIG_NETINIT_IPADDR);
}
#else
/* Use whatever was provided in the file (might be zero) */
addr.s_addr = ipv4cfg.ipaddr;
#endif
}
netlib_set_ipv4addr(NET_DEVNAME, &addr);
/* Set up the remaining addresses */
if (IPCFG_HAVE_STATIC(ipv4cfg.proto))
{
/* Set up the default router address */
addr.s_addr = ipv4cfg.router;
netlib_set_dripv4addr(NET_DEVNAME, &addr);
/* Setup the subnet mask */
addr.s_addr = ipv4cfg.netmask;
netlib_set_ipv4netmask(NET_DEVNAME, &addr);
}
#ifdef CONFIG_NETUTILS_DHCPC
/* No static addresses? That is fine if we are have addresses
* provided by the configuration, or if we are using DHCP.
*/
else if (g_use_dhcpc)
{
/* Set up the default router address and sub-net mask */
addr.s_addr = 0;
netlib_set_dripv4addr(NET_DEVNAME, &addr);
netlib_set_ipv4netmask(NET_DEVNAME, &addr);
}
#endif
else
{
/* Otherwise, set up the configured default router address */
addr.s_addr = HTONL(CONFIG_NETINIT_DRIPADDR);
netlib_set_dripv4addr(NET_DEVNAME, &addr);
/* Setup the subnet mask */
addr.s_addr = HTONL(CONFIG_NETINIT_NETMASK);
netlib_set_ipv4netmask(NET_DEVNAME, &addr);
}
#ifdef CONFIG_NETINIT_DNS
/* Set up the DNS address. Was one provided in the configuration? */
if (ipv4cfg.dnsaddr == 0)
{
/* No, use the configured default */
addr.s_addr = HTONL(CONFIG_NETINIT_DNSIPADDR);
}
else
{
addr.s_addr = ipv4cfg.dnsaddr;
}
netlib_set_ipv4dnsaddr(&addr);
#endif
}
else
#endif
{
/* Set up our host address */
#ifdef CONFIG_NETINIT_DHCPC
g_use_dhcpc = true;
addr.s_addr = 0;
#else
addr.s_addr = HTONL(CONFIG_NETINIT_IPADDR);
#endif
netlib_set_ipv4addr(NET_DEVNAME, &addr);
/* Set up the default router address */
addr.s_addr = HTONL(CONFIG_NETINIT_DRIPADDR);
netlib_set_dripv4addr(NET_DEVNAME, &addr);
/* Setup the subnet mask */
addr.s_addr = HTONL(CONFIG_NETINIT_NETMASK);
netlib_set_ipv4netmask(NET_DEVNAME, &addr);
#ifdef CONFIG_NETINIT_DNS
addr.s_addr = HTONL(CONFIG_NETINIT_DNSIPADDR);
netlib_set_ipv4dnsaddr(&addr);
#endif
}
}
#endif
/****************************************************************************
* Name: netinit_set_ipv6addrs
*
* Description:
* Setup IPv6 addresses.
*
****************************************************************************/
#if defined(NETINIT_HAVE_NETDEV) && !defined(CONFIG_NET_6LOWPAN) && ! \
defined(CONFIG_NET_IEEE802154) && defined(CONFIG_NET_IPv6)
static inline void netinit_set_ipv6addrs(void)
{
#ifndef CONFIG_NET_ICMPv6_AUTOCONF
#ifdef CONFIG_FSUTILS_IPCFG
struct ipv6cfg_s ipv6cfg;
int ret;
#endif
#ifdef CONFIG_FSUTILS_IPCFG
/* Attempt to obtain IPv6 address configuration from the IP configuration
* file.
*/
ret = ipcfg_read(NET_DEVNAME, (FAR struct ipcfg_s *)&ipv6cfg, AF_INET6);
if (ret >= 0 && IPCFG_HAVE_STATIC(ipv6cfg.proto))
{
/* Set up our fixed host address */
netlib_set_ipv6addr(NET_DEVNAME, &ipv6cfg.ipaddr);
/* Set up the default router address */
netlib_set_dripv6addr(NET_DEVNAME, &ipv6cfg.router);
/* Setup the subnet mask */
netlib_set_ipv6netmask(NET_DEVNAME, &ipv6cfg.netmask);
}
else
#endif
{
/* Set up our fixed host address */
netlib_set_ipv6addr(NET_DEVNAME,
(FAR const struct in6_addr *)g_ipv6_hostaddr);
/* Set up the default router address */
netlib_set_dripv6addr(NET_DEVNAME,
(FAR const struct in6_addr *)g_ipv6_draddr);
/* Setup the subnet mask */
netlib_set_ipv6netmask(NET_DEVNAME,
(FAR const struct in6_addr *)g_ipv6_netmask);
}
#endif /* CONFIG_NET_ICMPv6_AUTOCONF */
}
#endif
/****************************************************************************
* Name: netinit_set_ipaddrs
*
* Description:
* Setup IP addresses.
*
* For 6LoWPAN, the IP address derives from the MAC address. Setting it
* to any user provided value is asking for trouble.
*
****************************************************************************/
#if defined(NETINIT_HAVE_NETDEV) && !defined(CONFIG_NET_6LOWPAN) && ! \
defined(CONFIG_NET_IEEE802154)
static void netinit_set_ipaddrs(void)
{
#ifdef CONFIG_NET_IPv4
netinit_set_ipv4addrs();
#endif
#ifdef CONFIG_NET_IPv6
netinit_set_ipv6addrs();
#endif
}
#else
# define netinit_set_ipaddrs()
#endif
/****************************************************************************
* Name: netinit_net_bringup()
*
* Description:
* Bring up the configured network
*
****************************************************************************/
#if defined(NETINIT_HAVE_NETDEV) && !defined(CONFIG_NETINIT_NETLOCAL)
static void netinit_net_bringup(void)
{
#ifdef CONFIG_NETUTILS_DHCPC
uint8_t mac[IFHWADDRLEN];
struct dhcpc_state ds;
FAR void *handle;
#endif
/* Bring the network up. */
if (netlib_ifup(NET_DEVNAME) < 0)
{
return;
}
#ifdef CONFIG_WIRELESS_WAPI
/* Associate the wlan with an access point. */
if (netinit_associate(NET_DEVNAME) < 0)
{
return;
}
#endif
#ifdef CONFIG_NET_ICMPv6_AUTOCONF
/* Perform ICMPv6 auto-configuration */
netlib_icmpv6_autoconfiguration(NET_DEVNAME);
#endif
#ifdef CONFIG_NETUTILS_DHCPC
if (g_use_dhcpc)
{
/* Get the MAC address of the NIC */
netlib_getmacaddr(NET_DEVNAME, mac);
/* Set up the DHCPC modules */
handle = dhcpc_open(NET_DEVNAME, &mac, IFHWADDRLEN);
if (handle == NULL)
{
return;
}
/* Get an IP address. Note that there is no logic for renewing the
* IP address in this example. The address should be renewed in
* (ds.lease_time / 2) seconds.
*/
if (dhcpc_request(handle, &ds) == OK)
{
netlib_set_ipv4addr(NET_DEVNAME, &ds.ipaddr);
if (ds.netmask.s_addr != 0)
{
netlib_set_ipv4netmask(NET_DEVNAME, &ds.netmask);
}
if (ds.default_router.s_addr != 0)
{
netlib_set_dripv4addr(NET_DEVNAME, &ds.default_router);
}
if (ds.dnsaddr.s_addr != 0)
{
netlib_set_ipv4dnsaddr(&ds.dnsaddr);
}
}
dhcpc_close(handle);
}
#endif
#ifdef CONFIG_NETUTILS_NTPCLIENT
/* Start the NTP client */
ntpc_start();
#endif
}
#else
# define netinit_net_bringup()
#endif
/****************************************************************************
* Name: netinit_configure
*
* Description:
* Initialize the network per the selected NuttX configuration
*
****************************************************************************/
static void netinit_configure(void)
{
#ifdef NETINIT_HAVE_NETDEV
/* Many embedded network interfaces must have a software assigned MAC */
netinit_set_macaddr();
/* Set up IP addresses */
netinit_set_ipaddrs();
/* That completes the 'local' initialization of the network device. */
#ifndef CONFIG_NETINIT_NETLOCAL
/* Bring the network up. */
netinit_net_bringup();
#endif
#endif /* NETINIT_HAVE_NETDEV */
}
/****************************************************************************
* Name: netinit_signal
*
* Description:
* This signal handler responds to changes in PHY status.
*
****************************************************************************/
#ifdef CONFIG_NETINIT_MONITOR
static void netinit_signal(int signo, FAR siginfo_t *siginfo,
FAR void * context)
{
int semcount;
int ret;
/* What is the count on the semaphore? Don't over-post */
ret = sem_getvalue(&g_notify_sem, &semcount);
ninfo("Entry: semcount=%d\n", semcount);
if (ret == OK && semcount <= 0)
{
sem_post(&g_notify_sem);
}
ninfo("Exit\n");
}
#endif
/****************************************************************************
* Name: netinit_monitor
*
* Description:
* Monitor link status, gracefully taking the link up and down as the
* link becomes available or as the link is lost.
*
****************************************************************************/
#ifdef CONFIG_NETINIT_MONITOR
static int netinit_monitor(void)
{
struct timespec abstime;
struct timespec reltime;
struct ifreq ifr;
struct sigaction act;
struct sigaction oact;
bool devup;
int ret;
int sd;
ninfo("Entry\n");
/* Initialize the notification semaphore */
DEBUGVERIFY(sem_init(&g_notify_sem, 0, 0));
/* Get a socket descriptor that we can use to communicate with the network
* interface driver.
*/
sd = socket(AF_INETX, SOCK_DGRAM, 0);
if (sd < 0)
{
ret = -errno;
DEBUGASSERT(ret < 0);
nerr("ERROR: Failed to create a socket: %d\n", ret);
goto errout;
}
/* Attach a signal handler so that we do not lose PHY events */
act.sa_sigaction = netinit_signal;
act.sa_flags = SA_SIGINFO;
ret = sigaction(CONFIG_NETINIT_SIGNO, &act, &oact);
if (ret < 0)
{
ret = -errno;
DEBUGASSERT(ret < 0);
nerr("ERROR: sigaction() failed: %d\n", ret);
goto errout_with_socket;
}
/* Now loop, waiting for changes in link status */
for (; ; )
{
/* Configure to receive a signal on changes in link status */
memset(&ifr, 0, sizeof(struct ifreq));
strncpy(ifr.ifr_name, NET_DEVNAME, IFNAMSIZ);
ifr.ifr_mii_notify_event.sigev_notify = SIGEV_SIGNAL;
ifr.ifr_mii_notify_event.sigev_signo = CONFIG_NETINIT_SIGNO;
ret = ioctl(sd, SIOCMIINOTIFY, (unsigned long)&ifr);
if (ret < 0)
{
ret = -errno;
DEBUGASSERT(ret < 0);
nerr("ERROR: ioctl(SIOCMIINOTIFY) failed: %d\n", ret);
goto errout_with_sigaction;
}
/* Does the driver think that the link is up or down? */
ret = ioctl(sd, SIOCGIFFLAGS, (unsigned long)&ifr);
if (ret < 0)
{
ret = -errno;
DEBUGASSERT(ret < 0);
nerr("ERROR: ioctl(SIOCGIFFLAGS) failed: %d\n", ret);
goto errout_with_notification;
}
devup = ((ifr.ifr_flags & IFF_UP) != 0);
/* Get the current PHY address in use. This probably does not change,
* but just in case...
*
* NOTE: We are assuming that the network device name is preserved in
* the ifr structure.
*/
ret = ioctl(sd, SIOCGMIIPHY, (unsigned long)&ifr);
if (ret < 0)
{
ret = -errno;
DEBUGASSERT(ret < 0);
nerr("ERROR: ioctl(SIOCGMIIPHY) failed: %d\n", ret);
goto errout_with_notification;
}
/* Read the PHY status register */
ifr.ifr_mii_reg_num = MII_MSR;
ret = ioctl(sd, SIOCGMIIREG, (unsigned long)&ifr);
if (ret < 0)
{
ret = -errno;
DEBUGASSERT(ret < 0);
nerr("ERROR: ioctl(SIOCGMIIREG) failed: %d\n", ret);
goto errout_with_notification;
}
ninfo("%s: devup=%d PHY address=%02x MSR=%04x\n",
ifr.ifr_name, devup, ifr.ifr_mii_phy_id, ifr.ifr_mii_val_out);
/* Check for link up or down */
if ((ifr.ifr_mii_val_out & MII_MSR_LINKSTATUS) != 0)
{
/* Link up... does the drive think that the link is up? */
if (!devup)
{
/* No... We just transitioned from link down to link up.
* Bring the link up.
*/
ninfo("Bringing the link up\n");
ifr.ifr_flags = IFF_UP;
ret = ioctl(sd, SIOCSIFFLAGS, (unsigned long)&ifr);
if (ret < 0)
{
ret = -errno;
DEBUGASSERT(ret < 0);
nerr("ERROR: ioctl(SIOCSIFFLAGS) failed: %d\n", ret);
goto errout_with_notification;
}
/* And wait for a short delay. We will want to recheck the
* link status again soon.
*/
reltime.tv_sec = SHORT_TIME_SEC;
reltime.tv_nsec = 0;
}
else
{
/* The link is still up. Take a long, well-deserved rest */
reltime.tv_sec = LONG_TIME_SEC;
reltime.tv_nsec = 0;
}
}
else
{
/* Link down... Was the driver link state already down? */
if (devup)
{
/* No... we just transitioned from link up to link down. Take
* the link down.
*/
ninfo("Taking the link down\n");
ifr.ifr_flags = IFF_DOWN;
ret = ioctl(sd, SIOCSIFFLAGS, (unsigned long)&ifr);
if (ret < 0)
{
ret = -errno;
DEBUGASSERT(ret < 0);
nerr("ERROR: ioctl(SIOCSIFFLAGS) failed: %d\n", ret);
goto errout_with_notification;
}
}
/* In either case, wait for the short, configurable delay */
reltime.tv_sec = CONFIG_NETINIT_RETRYMSEC / 1000;
reltime.tv_nsec = (CONFIG_NETINIT_RETRYMSEC % 1000) * 1000000;
}
/* Now wait for either the semaphore to be posted for a timed-out to
* occur.
*/
sched_lock();
DEBUGVERIFY(clock_gettime(CLOCK_REALTIME, &abstime));
abstime.tv_sec += reltime.tv_sec;
abstime.tv_nsec += reltime.tv_nsec;
if (abstime.tv_nsec >= 1000000000)
{
abstime.tv_sec++;
abstime.tv_nsec -= 1000000000;
}
sem_timedwait(&g_notify_sem, &abstime);
sched_unlock();
}
/* TODO: Stop the PHY notifications and remove the signal handler. */
errout_with_notification:
ifr.ifr_mii_notify_event.sigev_notify = SIGEV_NONE;
ioctl(sd, SIOCMIINOTIFY, (unsigned long)&ifr);
errout_with_sigaction:
sigaction(CONFIG_NETINIT_SIGNO, &oact, NULL);
errout_with_socket:
close(sd);
errout:
nerr("ERROR: Aborting\n");
return ret;
}
#endif
/****************************************************************************
* Name: netinit_thread
*
* Description:
* Initialize the network per the selected NuttX configuration
*
****************************************************************************/
#ifdef CONFIG_NETINIT_THREAD
static pthread_addr_t netinit_thread(pthread_addr_t arg)
{
ninfo("Entry\n");
/* Configure the network */
netinit_configure();
#ifdef CONFIG_NETINIT_MONITOR
/* Monitor the network status */
netinit_monitor();
#endif
ninfo("Exit\n");
return NULL;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: netinit_bringup
*
* Description: