/* Interface adding function */
int
ifan_read (struct if_announcemsghdr *ifan)
{
struct interface *ifp;
ifp = if_lookup_by_index (ifan->ifan_index);
if (ifp == NULL && ifan->ifan_what == IFAN_ARRIVAL)
{
/* Create Interface */
ifp = if_get_by_name (ifan->ifan_name);
ifp->ifindex = ifan->ifan_index;
if_add_update (ifp);
}
else if (ifp != NULL && ifan->ifan_what == IFAN_DEPARTURE)
{
if_delete_update (ifp);
if_delete (ifp);
}
if_get_flags (ifp);
if_get_mtu (ifp);
if_get_metric (ifp);
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_info ("interface %s index %d", ifp->name, ifp->ifindex);
return 0;
}
void
if_refresh (struct interface *ifp)
{
if (if_is_up (ifp))
{
if_get_flags (ifp);
if (! if_is_up (ifp))
if_down (ifp);
}
else
{
if_get_flags (ifp);
if (if_is_up (ifp))
if_up (ifp);
}
}
void
if_refresh (struct interface_FOO *ifp)
{
if (if_is_operative (ifp))
{
if_get_flags (ifp);
if (! if_is_operative (ifp))
if_down (ifp);
}
else
{
if_get_flags (ifp);
if (if_is_operative (ifp))
if_up (ifp);
}
}
/* Interface information */
void if_getinf(const char *ifname, struct if_info *info)
{
struct ifreq ifr;
int skfd = socket(AF_INET, SOCK_DGRAM, 0);
if (skfd < 0)
err_sys("%s: can not open socket", __func__);
memset(&ifr, 0, sizeof(struct ifreq));
memset(info, 0, sizeof(struct if_info));
info->flags = if_get_flags(skfd, ifname);
strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
if (ioctl(skfd, SIOCGIFMTU, &ifr) == 0)
info->mtu = ifr.ifr_mtu;
if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) >= 0)
info->txqlen = ifr.ifr_qlen;
/* Copy the 6 byte Ethernet address and the 4 byte struct in_addrs */
if (ioctl(skfd, SIOCGIFHWADDR, &ifr) >= 0)
memcpy(&info->hwaddr, &ifr.ifr_hwaddr.sa_data, 6);
if (ioctl(skfd, SIOCGIFADDR, &ifr) >= 0)
memcpy(&info->addr, &ifr.ifr_addr.sa_data[2], 4);
if (ioctl(skfd, SIOCGIFNETMASK, &ifr) >= 0)
memcpy(&info->netmask, &ifr.ifr_netmask.sa_data[2], 4);
if (ioctl(skfd, SIOCGIFBRDADDR, &ifr) >= 0)
memcpy(&info->bcast, &ifr.ifr_broadaddr.sa_data[2], 4);
close(skfd);
}
/* Fetch interface information via ioctl(). */
static void
interface_info_ioctl (struct interface *ifp)
{
if_get_index (ifp);
if_get_flags (ifp);
if_get_mtu (ifp);
if_get_metric (ifp);
}
// Return true if network interface is 'up'.
static int __lua_if_isup(lua_State *L)
{
short flags;
const char *ifn = luaL_checkstring(L, 1);
if(if_get_flags(IFC, ifn, &flags) == -1)
return eprintf(IFC->last_error);
lua_pushboolean(L, (flags & IFF_UP));
return 1;
}
/* Fetch interface information via ioctl(). */
static void interface_info_ioctl()
{
struct listnode *node, *nnode;
struct interface *ifp;
for (ALL_LIST_ELEMENTS(iflist, node, nnode, ifp)) {
if_get_index(ifp);
#ifdef SIOCGIFHWADDR
if_get_hwaddr(ifp);
#endif /* SIOCGIFHWADDR */
if_get_flags(ifp);
#ifndef HAVE_GETIFADDRS
if_get_addr(ifp);
#endif /* ! HAVE_GETIFADDRS */
if_get_mtu(ifp);
if_get_metric(ifp);
}
}
int wlan_fetch_ipconfig(WLanConfig* conf) {
if_t iface = nullptr;
CHECK(if_get_by_index(NETWORK_INTERFACE_WIFI_STA, &iface));
CHECK_TRUE(iface, SYSTEM_ERROR_INVALID_STATE);
unsigned flags = 0;
CHECK(if_get_flags(iface, &flags));
// MAC address
sockaddr_ll hwAddr = {};
CHECK(if_get_lladdr(iface, &hwAddr));
CHECK_TRUE((size_t)hwAddr.sll_halen == MAC_ADDRESS_SIZE, SYSTEM_ERROR_UNKNOWN);
memcpy(conf->nw.uaMacAddr, hwAddr.sll_addr, MAC_ADDRESS_SIZE);
CHECK_TRUE((flags & IFF_UP) && (flags & IFF_LOWER_UP), SYSTEM_ERROR_INVALID_STATE);
// IP address
if_addrs* ifAddrList = nullptr;
CHECK(if_get_addrs(iface, &ifAddrList));
SCOPE_GUARD({
if_free_if_addrs(ifAddrList);
});
/** Bring @ifname up if not already up. Return 0 if ok, < 0 on error. */
int if_set_up(const char *ifname)
{
struct ifreq ifr;
int ret, skfd = socket(AF_INET, SOCK_DGRAM, 0);
if (skfd < 0)
err_sys("%s: can not open socket", __func__);
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
ifr.ifr_flags = if_get_flags(skfd, ifname);
if (ifr.ifr_flags & IFF_UP)
return 0;
ifr.ifr_flags |= IFF_UP;
ret = ioctl(skfd, SIOCSIFFLAGS, &ifr);
close(skfd);
return ret;
}
/* Fetch interface information via ioctl(). */
static void
interface_info_ioctl ()
{
struct listnode *node;
struct interface_FOO *ifp;
LIST_LOOP (iflist, ifp, node)
{
ifp = getdata (node);
if_get_index (ifp);
#ifdef SIOCGIFHWADDR
if_get_hwaddr (ifp);
#endif /* SIOCGIFHWADDR */
if_get_flags (ifp);
#ifndef HAVE_GETIFADDRS
if_get_addr (ifp);
#endif /* ! HAVE_GETIFADDRS */
if_get_mtu (ifp);
if_get_metric (ifp);
}
/* Interface adding function */
static int
ifan_read (struct if_announcemsghdr *ifan)
{
struct interface *ifp;
ifp = if_lookup_by_index (ifan->ifan_index);
if (ifp)
assert ( (ifp->ifindex == ifan->ifan_index)
|| (ifp->ifindex == IFINDEX_INTERNAL) );
if ( (ifp == NULL)
|| ((ifp->ifindex == IFINDEX_INTERNAL)
&& (ifan->ifan_what == IFAN_ARRIVAL)) )
{
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug ("%s: creating interface for ifindex %d, name %s",
__func__, ifan->ifan_index, ifan->ifan_name);
/* Create Interface */
ifp = if_get_by_name_len(ifan->ifan_name,
strnlen(ifan->ifan_name,
sizeof(ifan->ifan_name)));
ifp->ifindex = ifan->ifan_index;
if_add_update (ifp);
}
else if (ifp != NULL && ifan->ifan_what == IFAN_DEPARTURE)
if_delete_update (ifp);
if_get_flags (ifp);
if_get_mtu (ifp);
if_get_metric (ifp);
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug ("%s: interface %s index %d",
__func__, ifan->ifan_name, ifan->ifan_index);
return 0;
}
/* Fetch interface information via ioctl(). */
static void
interface_info_ioctl ()
{
listnode node;
struct interface *ifp;
for (node = listhead (iflist); node; node = nextnode (node))
{
ifp = getdata (node);
if_get_index (ifp);
#ifdef SIOCGIFHWADDR
if_get_hwaddr (ifp);
#endif /* SIOCGIFHWADDR */
if_get_flags (ifp);
#ifndef HAVE_GETIFADDRS
if_get_addr (ifp);
#endif /* ! HAVE_GETIFADDRS */
if_get_mtu (ifp);
if_get_metric (ifp);
}
}
void
if_refresh (struct interface *ifp)
{
if_get_flags (ifp);
}
/* Return true if @ifname is known to be up. */
bool if_is_up(int skfd, const char *ifname)
{
return if_get_flags(skfd, ifname) & IFF_UP;
}
