STATUS ifUnnumberedSet
(
char *pIfName, /* Name of interface to configure */
char *pDstIp, /* Destination address of the point to point link */
char *pBorrowedIp, /* The borrowed IP address/router ID */
char *pDstMac /* Destination MAC address */
)
{
int s, ret;
struct ifnet *ifp;
struct sockaddr_in sock;
if(!(ifp = ifunit (pIfName)))
return (ERROR);
/*
* Make sure that the interface with the "real"
* pBorrowedIp is already brought up.
*/
bzero ((char *)&sock, sizeof (struct sockaddr_in));
sock.sin_family = AF_INET;
sock.sin_len = sizeof (struct sockaddr_in);
sock.sin_addr.s_addr = inet_addr (pBorrowedIp);
if (!ifa_ifwithaddr ((struct sockaddr *)&sock))
return (EINVAL);
/* We manually configure the interface to be IFF_UNNUMBERED */
s = splnet ();
ifp->if_flags &= ~IFF_BROADCAST;
ifp->if_flags |= IFF_UNNUMBERED; /* It's defined as IFF_POINTOPOINT */
splx (s);
ret = ifAddrAdd (pIfName, pBorrowedIp, pDstIp, 0);
if (ret != OK)
return (ret);
/*
* For ethernet devices, we need to complete the route entry
* just created by the above operation. The ATF_INCOMPLETE flag
* will change the routing entry to contain the MAC address
* of the destination's ethernet device.
*/
if (pDstMac != (char *)NULL)
ret = arpAdd (pDstIp, pDstMac, ATF_PERM | ATF_INCOMPLETE);
return (ret);
}
/* Configure a virtual IP interface. */
void ssh_virtual_adapter_configure(
SshInterceptor interceptor,
SshInterceptorIfnum adapter_ifnum,
SshVirtualAdapterState adapter_state,
SshUInt32 num_addresses,
SshIpAddr addresses,
SshVirtualAdapterParams params,
SshVirtualAdapterStatusCB callback,
void *context)
{
VxWorksVa *va;
char *addrstr;
SshIpAddr ipaddr;
int i, addrlen, mask, oldflags, newflags;
int inet_up = 0;
#if defined(WITH_IPV6) && defined(INET6)
int inet6_up = 0;
#endif /* defined(WITH_IPV6) && defined(INET6) */
SSH_DEBUG(SSH_D_HIGHOK, ("configure ifnum %d", (int)adapter_ifnum));
if (!(va = vxworks_va_find_va(adapter_ifnum)))
{
SSH_TRACE(
SSH_D_ERROR,
("trying to get status of a nonexistent ifnum %d",
(int)adapter_ifnum));
if (callback)
callback(
SSH_VIRTUAL_ADAPTER_ERROR_NONEXISTENT,
adapter_ifnum,
NULL,
SSH_VIRTUAL_ADAPTER_STATE_UNDEFINED,
NULL,
context);
return;
}
/* Check addresses to determine IFF_INET_UP and IFF_INET6_UP status */
if (adapter_state != SSH_VIRTUAL_ADAPTER_STATE_DOWN && addresses)
{
for (i = 0; i < num_addresses; i++)
{
ipaddr = &addresses[i];
if (SSH_IP_IS4(ipaddr))
inet_up = 1;
#if defined(WITH_IPV6) && defined(INET6)
else if (SSH_IP_IS6(ipaddr))
inet6_up = 1;
#endif /* defined(WITH_IPV6) && defined(INET6) */
}
}
/* Clear addresses if new addresses are being configured or
interface is being turned off */
if (addresses || adapter_state == SSH_VIRTUAL_ADAPTER_STATE_DOWN)
{
for (i = 0; i < va->ip4addr_num; i++)
{
addrstr = va->ip4addr_tab[i];
SSH_DEBUG(
SSH_D_MIDOK,
("deleting IPv4 address %s on %s, ifnum %d",
addrstr, va->name, (int)va->ifnum));
if (ifAddrDelete(va->name, addrstr) != OK)
SSH_TRACE(
SSH_D_ERROR,
("%s: deleting IPv4 address %s failed", va->name, addrstr));
}
va->ip4addr_num = 0;
if (ifRouteDelete(vxworks_va_devname, va->end.devObject.unit) ==
ERROR)
SSH_TRACE(SSH_D_ERROR, ("%s: deleting IPv4 routes failed", va->name));
#if defined(WITH_IPV6) && defined(INET6)
for (i = 0; i < va->ip6addr_num; i++)
{
addrstr = va->ip6addr_tab[i];
SSH_DEBUG(
SSH_D_MIDOK,
("deleting IPv6 address %s on %s, ifnum %d",
addrstr, va->name, (int)va->ifnum));
if (if6AddrDelete(va->name, addrstr) != OK)
SSH_TRACE(
SSH_D_ERROR,
("%s: deleting IPv6 address %s failed", va->name, addrstr));
}
va->ip6addr_num = 0;
#endif /* defined(WITH_IPV6) && defined(INET6) */
}
/* Set interface status. */
if (ifFlagGet(va->name, &oldflags) != OK)
{
SSH_TRACE(SSH_D_ERROR, ("%s: cannot get interface flags"));
return;
}
newflags = oldflags;
if (inet_up
#if defined(WITH_IPV6) && defined(INET6)
|| inet6_up
#endif /* defined(WITH_IPV6) && defined(INET6) */
)
newflags |= IFF_UP;
else
newflags &= ~IFF_UP;
#if VXWORKS_NETVER >= 55122
if (inet_up)
newflags |= IFF_INET_UP;
else
newflags &= ~IFF_INET_UP;
#if defined(WITH_IPV6) && defined(INET6)
if (inet6_up)
newflags |= IFF_INET6_UP;
else
newflags &= ~IFF_INET6_UP;
#endif /* defined(WITH_IPV6) && defined(INET6) */
#endif /* VXWORKS_NETVER >= 55122 */
if (newflags != oldflags && ifFlagSet(va->name, newflags) != OK)
{
SSH_TRACE(SSH_D_ERROR, ("%s: cannot set interface flags"));
return;
}
/* Add addresses if the addresses parameter is non-NULL and
interface is not being turned off */
if (addresses && adapter_state != SSH_VIRTUAL_ADAPTER_STATE_DOWN)
{
for (i = 0; i < num_addresses; i++)
{
ipaddr = &addresses[i];
if (SSH_IP_IS4(ipaddr))
{
if (va->ip4addr_num >=
sizeof va->ip4addr_tab / sizeof va->ip4addr_tab[0])
{
SSH_TRACE(
SSH_D_ERROR,
("%s: too many IPv4 addresses, ignoring some", va->name));
break;
}
addrstr = va->ip4addr_tab[va->ip4addr_num];
addrlen = sizeof va->ip4addr_tab[va->ip4addr_num];
ssh_ipaddr_print(ipaddr, addrstr, addrlen);
SSH_DEBUG(
SSH_D_MIDOK,
("adding IPv4 address %s on %s, ifnum %d",
addrstr, va->name, (int)va->ifnum));
mask = ~((1 << (32 - SSH_IP_MASK_LEN(ipaddr))) - 1) & 0xffffffff;
if (ifAddrAdd(va->name, addrstr, NULL, mask) != OK)
{
SSH_TRACE(
SSH_D_ERROR,
("%s: adding IPv4 address %s failed", va->name, addrstr));
continue;
}
va->ip4addr_num++;
}
#if defined(WITH_IPV6) && defined(INET6)
else if (SSH_IP_IS6(ipaddr))
{
if (va->ip6addr_num >=
sizeof va->ip6addr_tab / sizeof va->ip6addr_tab[0])
{
SSH_TRACE(
SSH_D_ERROR,
("%s: too many IPv6 addresses, ignoring some", va->name));
break;
}
addrstr = va->ip6addr_tab[va->ip6addr_num];
addrlen = sizeof va->ip6addr_tab[va->ip6addr_num];
ssh_ipaddr_print(ipaddr, addrstr, addrlen);
SSH_DEBUG(
SSH_D_MIDOK,
("adding IPv6 address %s on %s, ifnum %d",
addrstr, va->name, (int)va->ifnum));
if (if6AddrAdd(va->name, addrstr, SSH_IP_MASK_LEN(ipaddr), 0)
!= OK)
{
SSH_TRACE(
SSH_D_ERROR,
("%s: adding IPv6 address %s failed", va->name, addrstr));
continue;
}
va->ip6addr_num++;
}
#endif /* defined(WITH_IPV6) && defined(INET6) */
}
}
/* Change MTU */
if (params && params->mtu > 0)
MIB_VAR_UPDATE(va->end.pMib2Tbl, M2_varId_ifMtu, (ULONG)params->mtu);
/* Toggle IFF_UP twice to cause an interface event with up-to-date
addresses in effect. */
if (ifFlagGet(va->name, &oldflags) != OK)
{
SSH_TRACE(SSH_D_ERROR, ("%s: cannot get interface flags"));
vxworks_va_report(
va, SSH_VIRTUAL_ADAPTER_ERROR_UNKNOWN_ERROR, callback, context);
return;
}
newflags = oldflags ^ IFF_UP;
if (ifFlagSet(va->name, newflags) != OK)
{
SSH_TRACE(SSH_D_ERROR, ("%s: cannot set interface flags"));
vxworks_va_report(
va, SSH_VIRTUAL_ADAPTER_ERROR_UNKNOWN_ERROR, callback, context);
return;
}
newflags ^= IFF_UP;
if (ifFlagSet(va->name, newflags) != OK)
{
SSH_TRACE(SSH_D_ERROR, ("%s: cannot set interface flags"));
vxworks_va_report(
va, SSH_VIRTUAL_ADAPTER_ERROR_UNKNOWN_ERROR, callback, context);
return;
}
SSH_DEBUG(
SSH_D_HIGHOK, ("configured %s, ifnum %d", va->name, (int)va->ifnum));
vxworks_va_report(va, SSH_VIRTUAL_ADAPTER_ERROR_OK, callback, context);
}
