/* Handle changes to addresses and send the neccesary announcements
* to clients. */
static void connected_update(struct interface *ifp, struct connected *ifc)
{
struct connected *current;
/* Check same connected route. */
if ((current = connected_check(ifp, (struct prefix *)ifc->address))) {
if (CHECK_FLAG(current->conf, ZEBRA_IFC_CONFIGURED))
SET_FLAG(ifc->conf, ZEBRA_IFC_CONFIGURED);
/* Avoid spurious withdraws, this might be just the kernel 'reflecting'
* back an address we have already added.
*/
if (connected_same(current, ifc)) {
/* nothing to do */
connected_free(ifc);
return;
}
/* Clear the configured flag on the old ifc, so it will be freed by
* connected withdraw. */
UNSET_FLAG(current->conf, ZEBRA_IFC_CONFIGURED);
connected_withdraw(current); /* implicit withdraw - freebsd does this */
}
/* If the connected is new or has changed, announce it, if it is usable */
if (CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL))
connected_announce(ifp, ifc);
}
/* Add connected IPv6 route to the interface. */
void
connected_add_ipv6 (struct interface *ifp, int flags, struct in6_addr *addr,
u_char prefixlen, struct in6_addr *broad,
const char *label)
{
struct prefix_ipv6 *p;
struct connected *ifc;
/* Make connected structure. */
ifc = connected_new ();
ifc->ifp = ifp;
ifc->flags = flags;
/* Allocate new connected address. */
p = prefix_ipv6_new ();
p->family = AF_INET6;
IPV6_ADDR_COPY (&p->prefix, addr);
p->prefixlen = prefixlen;
ifc->address = (struct prefix *) p;
/* If there is broadcast or peer address. */
if (broad)
{
if (IN6_IS_ADDR_UNSPECIFIED(broad))
zlog_warn("warning: %s called for interface %s with unspecified "
"destination address; ignoring!", __func__, ifp->name);
else
{
p = prefix_ipv6_new ();
p->family = AF_INET6;
IPV6_ADDR_COPY (&p->prefix, broad);
p->prefixlen = prefixlen;
ifc->destination = (struct prefix *) p;
}
}
if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER) && !ifc->destination)
{
zlog_warn("warning: %s called for interface %s "
"with peer flag set, but no peer address supplied",
__func__, ifp->name);
UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER);
}
/* Label of this address. */
if (label)
ifc->label = XSTRDUP (MTYPE_CONNECTED_LABEL, label);
if ((ifc = connected_implicit_withdraw (ifp, ifc)) == NULL)
return;
connected_announce (ifp, ifc);
}
/* Add connected IPv6 route to the interface. */
void
connected_add_ipv6 (struct interface *ifp, struct in6_addr *addr,
u_char prefixlen, struct in6_addr *broad,
const char *label)
{
struct prefix_ipv6 *p;
struct connected *ifc;
/* Make connected structure. */
ifc = connected_new ();
ifc->ifp = ifp;
/* Allocate new connected address. */
p = prefix_ipv6_new ();
p->family = AF_INET6;
IPV6_ADDR_COPY (&p->prefix, addr);
p->prefixlen = prefixlen;
ifc->address = (struct prefix *) p;
/* If there is broadcast or pointopoint address. */
if (broad)
{
p = prefix_ipv6_new ();
p->family = AF_INET6;
IPV6_ADDR_COPY (&p->prefix, broad);
ifc->destination = (struct prefix *) p;
}
/* Label of this address. */
if (label)
ifc->label = XSTRDUP (MTYPE_CONNECTED_LABEL, label);
if ((ifc = connected_implicit_withdraw (ifp, ifc)) == NULL)
return;
connected_announce (ifp, ifc);
}
/* Add connected IPv4 route to the interface. */
void
connected_add_ipv4 (struct interface *ifp, int flags, struct in_addr *addr,
u_char prefixlen, struct in_addr *broad,
const char *label)
{
struct prefix_ipv4 *p;
struct connected *ifc;
/* Make connected structure. */
ifc = connected_new ();
ifc->ifp = ifp;
ifc->flags = flags;
/* Allocate new connected address. */
p = prefix_ipv4_new ();
p->family = AF_INET;
p->prefix = *addr;
p->prefixlen = prefixlen;
ifc->address = (struct prefix *) p;
/* If there is broadcast or peer address. */
if (broad)
{
p = prefix_ipv4_new ();
p->family = AF_INET;
p->prefix = *broad;
p->prefixlen = prefixlen;
ifc->destination = (struct prefix *) p;
/* validate the destination address */
if (CONNECTED_PEER(ifc))
{
if (IPV4_ADDR_SAME(addr,broad))
zlog_warn("warning: interface %s has same local and peer "
"address %s, routing protocols may malfunction",
ifp->name,inet_ntoa(*addr));
}
else
{
if (broad->s_addr != ipv4_broadcast_addr(addr->s_addr,prefixlen))
{
char buf[2][INET_ADDRSTRLEN];
struct in_addr bcalc;
bcalc.s_addr = ipv4_broadcast_addr(addr->s_addr,prefixlen);
zlog_warn("warning: interface %s broadcast addr %s/%d != "
"calculated %s, routing protocols may malfunction",
ifp->name,
inet_ntop (AF_INET, broad, buf[0], sizeof(buf[0])),
prefixlen,
inet_ntop (AF_INET, &bcalc, buf[1], sizeof(buf[1])));
}
}
}
else
{
if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER))
{
zlog_warn("warning: %s called for interface %s "
"with peer flag set, but no peer address supplied",
__func__, ifp->name);
UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER);
}
/* no broadcast or destination address was supplied */
if ((prefixlen == IPV4_MAX_PREFIXLEN) && if_is_pointopoint(ifp))
zlog_warn("warning: PtP interface %s with addr %s/%d needs a "
"peer address",ifp->name,inet_ntoa(*addr),prefixlen);
}
/* Label of this address. */
if (label)
ifc->label = XSTRDUP (MTYPE_CONNECTED_LABEL, label);
/* nothing to do? */
if ((ifc = connected_implicit_withdraw (ifp, ifc)) == NULL)
return;
connected_announce (ifp, ifc);
}
/* Add connected IPv4 route to the interface. */
void
connected_add_ipv4 (struct interface *ifp, int flags, struct in_addr *addr,
u_char prefixlen, struct in_addr *broad,
const char *label)
{
struct prefix_ipv4 *p;
struct connected *ifc;
/* Make connected structure. */
ifc = connected_new ();
ifc->ifp = ifp;
ifc->flags = flags;
/* Allocate new connected address. */
p = prefix_ipv4_new ();
p->family = AF_INET;
p->prefix = *addr;
p->prefixlen = prefixlen;
ifc->address = (struct prefix *) p;
/* If there is broadcast or pointopoint address. */
if (broad)
{
p = prefix_ipv4_new ();
p->family = AF_INET;
p->prefix = *broad;
ifc->destination = (struct prefix *) p;
/* validate the destination address */
if (ifp->flags & IFF_POINTOPOINT)
{
if (IPV4_ADDR_SAME(addr,broad))
zlog_warn("warning: PtP interface %s has same local and peer "
"address %s, routing protocols may malfunction",
ifp->name,inet_ntoa(*addr));
else if ((prefixlen != IPV4_MAX_PREFIXLEN) &&
(ipv4_network_addr(addr->s_addr,prefixlen) !=
ipv4_network_addr(broad->s_addr,prefixlen)))
{
char buf[2][INET_ADDRSTRLEN];
zlog_warn("warning: PtP interface %s network mismatch: local "
"%s/%d vs. peer %s, routing protocols may malfunction",
ifp->name,
inet_ntop (AF_INET, addr, buf[0], sizeof(buf[0])),
prefixlen,
inet_ntop (AF_INET, broad, buf[1], sizeof(buf[1])));
}
}
else
{
if (broad->s_addr != ipv4_broadcast_addr(addr->s_addr,prefixlen))
{
char buf[2][INET_ADDRSTRLEN];
struct in_addr bcalc;
bcalc.s_addr = ipv4_broadcast_addr(addr->s_addr,prefixlen);
zlog_warn("warning: interface %s broadcast addr %s/%d != "
"calculated %s, routing protocols may malfunction",
ifp->name,
inet_ntop (AF_INET, broad, buf[0], sizeof(buf[0])),
prefixlen,
inet_ntop (AF_INET, &bcalc, buf[1], sizeof(buf[1])));
}
/*gjd : for Rtsuit restart , ip address write show running.*/
if(!CHECK_FLAG(ifc->ip_config,RTMD_RESTART_IP_CONFIG)&&(keep_kernel_mode == 1))
{
SET_FLAG(ifc->ip_config,RTMD_RESTART_IP_CONFIG);
/*zlog_err("%s : line %d ifc->conf(%u), ifc->ipconfig(%u).\n",
__func__,__LINE__,ifc->conf,ifc->ip_config);*/
}
}
}
else
/* no broadcast or destination address was supplied */
if ((prefixlen == IPV4_MAX_PREFIXLEN) && if_is_pointopoint(ifp))
zlog_warn("warning: PtP interface %s with addr %s/%d needs a "
"peer address",ifp->name,inet_ntoa(*addr),prefixlen);
/* Label of this address. */
if (label)
ifc->label = XSTRDUP (MTYPE_CONNECTED_LABEL, label);
/* nothing to do? */
if ((ifc = connected_implicit_withdraw (ifp, ifc)) == NULL)
return;
connected_announce (ifp, ifc);
}