+2006-12-12 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
+
+ * bgp_nexthop.c: (bgp_connected_add, bgp_connected_delete)
+ Simplify logic by using new CONNECTED_PREFIX macro.
+
2006-12-07 Paul Jakma <paul.jakma@sun.com>
* bgp_fsm.c: Bug #302 fix, diagnosis, suggestions and testing
{
struct prefix p;
struct prefix *addr;
- struct prefix *dest;
struct interface *ifp;
struct bgp_node *rn;
struct bgp_connected_ref *bc;
return;
addr = ifc->address;
- dest = ifc->destination;
if (addr->family == AF_INET)
{
- memset (&p, 0, sizeof (struct prefix));
- p.family = AF_INET;
- p.prefixlen = addr->prefixlen;
-
- if (CONNECTED_POINTOPOINT_HOST(ifc))
- p.u.prefix4 = dest->u.prefix4;
- else
- p.u.prefix4 = addr->u.prefix4;
-
+ PREFIX_COPY_IPV4(&p, CONNECTED_PREFIX(ifc));
apply_mask_ipv4 ((struct prefix_ipv4 *) &p);
if (prefix_ipv4_any ((struct prefix_ipv4 *) &p))
}
}
#ifdef HAVE_IPV6
- if (addr->family == AF_INET6)
+ else if (addr->family == AF_INET6)
{
- memset (&p, 0, sizeof (struct prefix));
- p.family = AF_INET6;
- p.prefixlen = addr->prefixlen;
-
- if (if_is_pointopoint (ifp) && dest)
- p.u.prefix6 = dest->u.prefix6;
- else
- p.u.prefix6 = addr->u.prefix6;
-
+ PREFIX_COPY_IPV6(&p, CONNECTED_PREFIX(ifc));
apply_mask_ipv6 ((struct prefix_ipv6 *) &p);
if (IN6_IS_ADDR_UNSPECIFIED (&p.u.prefix6))
{
struct prefix p;
struct prefix *addr;
- struct prefix *dest;
struct interface *ifp;
struct bgp_node *rn;
struct bgp_connected_ref *bc;
return;
addr = ifc->address;
- dest = ifc->destination;
if (addr->family == AF_INET)
{
- memset (&p, 0, sizeof (struct prefix));
- p.family = AF_INET;
- p.prefixlen = addr->prefixlen;
-
- if (CONNECTED_POINTOPOINT_HOST(ifc))
- p.u.prefix4 = dest->u.prefix4;
- else
- p.u.prefix4 = addr->u.prefix4;
-
+ PREFIX_COPY_IPV4(&p, CONNECTED_PREFIX(ifc));
apply_mask_ipv4 ((struct prefix_ipv4 *) &p);
if (prefix_ipv4_any ((struct prefix_ipv4 *) &p))
#ifdef HAVE_IPV6
else if (addr->family == AF_INET6)
{
- memset (&p, 0, sizeof (struct prefix));
- p.family = AF_INET6;
- p.prefixlen = addr->prefixlen;
-
- if (if_is_pointopoint (ifp) && dest)
- p.u.prefix6 = dest->u.prefix6;
- else
- p.u.prefix6 = addr->u.prefix6;
-
+ PREFIX_COPY_IPV6(&p, CONNECTED_PREFIX(ifc));
apply_mask_ipv6 ((struct prefix_ipv6 *) &p);
if (IN6_IS_ADDR_UNSPECIFIED (&p.u.prefix6))
+2006-12-12 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
+
+ * if.h: (struct connected) Add new ZEBRA_IFA_PEER flag indicating
+ whether a peer address has been configured. Comment now shows
+ the new interpretation of the destination addr: if ZEBRA_IFA_PEER
+ is set, then it must contain the destination address, otherwise
+ it may contain the broadcast address or be NULL.
+ (CONNECTED_DEST_HOST,CONNECTED_POINTOPOINT_HOST) Remove obsolete
+ macros that were specific to IPv4 and not fully general.
+ (CONNECTED_PEER) New macro to check ZEBRA_IFA_PEER flag.
+ (CONNECTED_PREFIX) New macro giving the prefix to insert into
+ the RIB: if CONNECTED_PEER, then use the destination (peer) address,
+ else use the address field.
+ (CONNECTED_ID) New macro to come up with an identifying address
+ for the struct connected.
+ * if.c: (if_lookup_address, connected_lookup_address) Streamline
+ logic with new CONNECTED_PREFIX macro.
+ * prefix.h: (PREFIX_COPY_IPV4, PREFIX_COPY_IPV6) New macros
+ for better performance than the general prefix_copy function.
+ * zclient.c: (zebra_interface_address_read) For non-null destination
+ addresses, set prefixlen to equal the address prefixlen. This
+ is needed to get the new CONNECTED_PREFIX macro to work properly.
+
2006-10-14 Paul Jakma <paul.jakma@sun.com>
* if.c: (general) Handle upgrades from SUNWzebra, which tried
int bestlen = 0;
struct listnode *cnode;
struct interface *ifp;
- struct prefix *p;
struct connected *c;
struct interface *match;
{
for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, c))
{
- if (c->address && (c->address->family == AF_INET))
+ if (c->address && (c->address->family == AF_INET) &&
+ prefix_match(CONNECTED_PREFIX(c), &addr) &&
+ (c->address->prefixlen > bestlen))
{
- if (CONNECTED_POINTOPOINT_HOST(c))
- {
- /* PTP links are conventionally identified
- by the address of the far end - MAG */
- if (IPV4_ADDR_SAME (&c->destination->u.prefix4, &src))
- return ifp;
- }
- else
- {
- p = c->address;
-
- if (prefix_match (p, &addr) && p->prefixlen > bestlen)
- {
- bestlen = p->prefixlen;
- match = ifp;
- }
- }
+ bestlen = c->address->prefixlen;
+ match = ifp;
}
}
}
{
struct prefix addr;
struct listnode *cnode;
- struct prefix *p;
struct connected *c;
struct connected *match;
for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, c))
{
- if (c->address && (c->address->family == AF_INET))
- {
- if (CONNECTED_POINTOPOINT_HOST(c))
- {
- /* PTP links are conventionally identified
- by the address of the far end - MAG */
- if (IPV4_ADDR_SAME (&c->destination->u.prefix4, &dst))
- return c;
- }
- else
- {
- p = c->address;
-
- if (prefix_match (p, &addr) &&
- (!match || (p->prefixlen > match->address->prefixlen)))
- match = c;
- }
- }
+ if (c->address && (c->address->family == AF_INET) &&
+ prefix_match(CONNECTED_PREFIX(c), &addr) &&
+ (!match || (c->address->prefixlen > match->address->prefixlen)))
+ match = c;
}
return match;
}
/* Flags for connected address. */
u_char flags;
-#define ZEBRA_IFA_SECONDARY (1 << 0)
+#define ZEBRA_IFA_SECONDARY (1 << 0)
+#define ZEBRA_IFA_PEER (1 << 1)
+ /* N.B. the ZEBRA_IFA_PEER flag should be set if and only if
+ a peer address has been configured. If this flag is set,
+ the destination field must contain the peer address.
+ Otherwise, if this flag is not set, the destination address
+ will either contain a broadcast address or be NULL.
+ */
/* Address of connected network. */
struct prefix *address;
- struct prefix *destination; /* broadcast or peer address; may be NULL */
+
+ /* Peer or Broadcast address, depending on whether ZEBRA_IFA_PEER is set.
+ Note: destination may be NULL if ZEBRA_IFA_PEER is not set. */
+ struct prefix *destination;
/* Label for Linux 2.2.X and upper. */
char *label;
};
-/* Given an IPV4 struct connected, this macro determines whether a /32
- peer address has been supplied (i.e. there is no subnet assigned) */
-#define CONNECTED_DEST_HOST(C) \
- ((C)->destination && ((C)->address->prefixlen == IPV4_MAX_PREFIXLEN))
+/* Does the destination field contain a peer address? */
+#define CONNECTED_PEER(C) CHECK_FLAG((C)->flags, ZEBRA_IFA_PEER)
+
+/* Prefix to insert into the RIB */
+#define CONNECTED_PREFIX(C) \
+ (CONNECTED_PEER(C) ? (C)->destination : (C)->address)
-/* Given an IPV4 struct connected, this macro determins whether it is
- a point-to-point link with a /32 peer address (i.e. there
- is no dedicated subnet for the PtP link) */
-#define CONNECTED_POINTOPOINT_HOST(C) \
- (((C)->ifp->flags & IFF_POINTOPOINT) && CONNECTED_DEST_HOST(C))
+/* Identifying address. We guess that if there's a peer address, but the
+ local address is in the same prefix, then the local address may be unique. */
+#define CONNECTED_ID(C) \
+ ((CONNECTED_PEER(C) && !prefix_match((C)->destination, (C)->address)) ?\
+ (C)->destination : (C)->address)
/* Interface hook sort. */
#define IF_NEW_HOOK 0
extern int str2prefix_ipv4 (const char *, struct prefix_ipv4 *);
extern void apply_mask_ipv4 (struct prefix_ipv4 *);
+#define PREFIX_COPY_IPV4(DST, SRC) \
+ *((struct prefix_ipv4 *)(DST)) = *((const struct prefix_ipv4 *)(SRC));
+
extern int prefix_ipv4_any (const struct prefix_ipv4 *);
extern void apply_classful_mask_ipv4 (struct prefix_ipv4 *);
extern int str2prefix_ipv6 (const char *, struct prefix_ipv6 *);
extern void apply_mask_ipv6 (struct prefix_ipv6 *);
+#define PREFIX_COPY_IPV6(DST, SRC) \
+ *((struct prefix_ipv6 *)(DST)) = *((const struct prefix_ipv6 *)(SRC));
+
extern int ip6_masklen (struct in6_addr);
extern void masklen2ip6 (int, struct in6_addr *);
ifc = connected_add_by_prefix(ifp, &p,(memconstant(&d.u.prefix,0,plen) ?
NULL : &d));
if (ifc != NULL)
- ifc->flags = ifc_flags;
+ {
+ ifc->flags = ifc_flags;
+ if (ifc->destination)
+ ifc->destination->prefixlen = ifc->address->prefixlen;
+ }
}
else
{
+2006-12-12 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
+
+ * ospf_interface.c: (ospf_if_is_configured, ospf_if_lookup_by_prefix,
+ ospf_if_lookup_recv_if) Simplify logic using new CONNECTED_PREFIX
+ macro.
+ * ospf_lsa.c: (lsa_link_ptop_set) Using the new CONNECTED_PREFIX
+ macro, both options collapse into the same code.
+ * ospf_snmp.c: (ospf_snmp_if_update) Simplify logic using new
+ CONNECTED_ID macro.
+ (ospf_snmp_is_if_have_addr) Simplify logic using new CONNECTED_PREFIX
+ macro.
+ * ospf_vty.c: (show_ip_ospf_interface_sub) Use new CONNECTED_PEER macro
+ instead of testing the IFF_POINTOPOINT flag.
+ * ospfd.c: (ospf_network_match_iface) Use new CONNECTED_PEER macro
+ instead of testing with if_is_pointopoint. And add commented-out
+ code to implement alternative (in my opinion) more elegant behavior
+ that has no special-case treatment for PtP addresses.
+ (ospf_network_run) Use new CONNECTED_ID macro to simplify logic.
+
2006-12-04 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
* ospfd.c: (ospf_network_run) Remove an offending 'break' statement.
addr.family = AF_INET;
addr.prefix = *address;
addr.prefixlen = IPV4_MAX_PREFIXLEN;
-
+
for (ALL_LIST_ELEMENTS (ospf->oiflist, node, nnode, oi))
if (oi->type != OSPF_IFTYPE_VIRTUALLINK)
{
- if (oi->type == OSPF_IFTYPE_POINTOPOINT)
+ if (oi->type == OSPF_IFTYPE_POINTOPOINT)
{
- if (CONNECTED_DEST_HOST(oi->connected))
- {
- /* match only destination addr, since local addr is most likely
- * not unique (borrowed from another interface) */
- if (IPV4_ADDR_SAME (address,
- &oi->connected->destination->u.prefix4))
- return oi;
- }
- else
- {
- /* special leniency: match if addr is anywhere on PtP subnet */
- if (prefix_match(oi->address,(struct prefix *)&addr))
- return oi;
- }
+ /* special leniency: match if addr is anywhere on peer subnet */
+ if (prefix_match(CONNECTED_PREFIX(oi->connected),
+ (struct prefix *)&addr))
+ return oi;
}
- else
+ else
{
if (IPV4_ADDR_SAME (address, &oi->address->u.prefix4))
return oi;
{
struct listnode *node;
struct ospf_interface *oi;
- struct prefix ptmp;
/* Check each Interface. */
for (ALL_LIST_ELEMENTS_RO (ospf->oiflist, node, oi))
{
if (oi->type != OSPF_IFTYPE_VIRTUALLINK)
{
- if ((oi->type == OSPF_IFTYPE_POINTOPOINT) &&
- CONNECTED_DEST_HOST(oi->connected))
- {
- prefix_copy (&ptmp, oi->connected->destination);
- ptmp.prefixlen = IPV4_MAX_BITLEN;
- }
- else
- prefix_copy (&ptmp, oi->address);
-
+ struct prefix ptmp;
+
+ prefix_copy (&ptmp, CONNECTED_PREFIX(oi->connected));
apply_mask (&ptmp);
if (prefix_same (&ptmp, (struct prefix *) p))
return oi;
if (if_is_loopback (oi->ifp))
continue;
-
- if ((oi->type == OSPF_IFTYPE_POINTOPOINT) &&
- CONNECTED_DEST_HOST(oi->connected))
- {
- if (IPV4_ADDR_SAME (&oi->connected->destination->u.prefix4, &src))
- return oi;
- }
- else
+
+ if (prefix_match (CONNECTED_PREFIX(oi->connected),
+ (struct prefix *) &addr))
{
- if (prefix_match (oi->address, (struct prefix *) &addr))
- {
- if ( (match == NULL) ||
- (match->address->prefixlen < oi->address->prefixlen)
- )
- match = oi;
- }
+ if ( (match == NULL) ||
+ (match->address->prefixlen < oi->address->prefixlen)
+ )
+ match = oi;
}
}
return 1;
}
-/* Describe Point-to-Point link. */
+/* Describe Point-to-Point link (Section 12.4.1.1). */
static int
lsa_link_ptop_set (struct stream *s, struct ospf_interface *oi)
{
LSA_LINK_TYPE_POINTOPOINT, 0, cost);
}
- if (CONNECTED_DEST_HOST(oi->connected))
- {
- /* Option 1:
- link_type = LSA_LINK_TYPE_STUB;
- link_id = nbr->address.u.prefix4;
- link_data.s_addr = 0xffffffff;
- link_cost = o->output_cost; */
-
- id.s_addr = oi->connected->destination->u.prefix4.s_addr;
- mask.s_addr = 0xffffffff;
- links += link_info_set (s, id, mask, LSA_LINK_TYPE_STUB, 0,
- oi->output_cost);
- }
- else
- {
- /* Option 2: We need to include link to a stub
- network regardless of the state of the neighbor */
- masklen2ip (oi->address->prefixlen, &mask);
- id.s_addr = oi->address->u.prefix4.s_addr & mask.s_addr;
- links += link_info_set (s, id, mask, LSA_LINK_TYPE_STUB, 0,
- oi->output_cost);
- }
+ /* Regardless of the state of the neighboring router, we must
+ add a Type 3 link (stub network).
+ N.B. Options 1 & 2 share basically the same logic. */
+ masklen2ip (oi->address->prefixlen, &mask);
+ id.s_addr = CONNECTED_PREFIX(oi->connected)->u.prefix4.s_addr & mask.s_addr;
+ links += link_info_set (s, id, mask, LSA_LINK_TYPE_STUB, 0,
+ oi->output_cost);
return links;
}
/* Lookup first IPv4 address entry. */
for (ALL_LIST_ELEMENTS_RO (ifp->connected, node, ifc))
{
- if (CONNECTED_POINTOPOINT_HOST(ifc))
- p = ifc->destination;
- else
- p = ifc->address;
+ p = CONNECTED_ID(ifc);
if (p->family == AF_INET)
{
int
ospf_snmp_is_if_have_addr (struct interface *ifp)
{
- struct prefix *p;
struct listnode *nn;
struct connected *ifc;
/* Is this interface having any connected IPv4 address ? */
for (ALL_LIST_ELEMENTS_RO (ifp->connected, nn, ifc))
{
- if (if_is_pointopoint (ifp))
- p = ifc->destination;
- else
- p = ifc->address;
-
- if (p->family == AF_INET)
+ if (CONNECTED_PREFIX(ifc)->family == AF_INET)
return 1;
}
struct in_addr *dest;
const char *dstr;
- if ((ifp->flags & IFF_POINTOPOINT)
- || oi->type == OSPF_IFTYPE_VIRTUALLINK)
+ if (CONNECTED_PEER(oi->connected)
+ || oi->type == OSPF_IFTYPE_VIRTUALLINK)
dstr = "Peer";
else
dstr = "Broadcast";
int
ospf_network_match_iface(struct connected *co, struct prefix *net)
{
+#define COMPATIBILITY_MODE
+ /* The old code used to have a special case for PtP interfaces:
+
+ if (if_is_pointopoint (co->ifp) && co->destination &&
+ IPV4_ADDR_SAME ( &(co->destination->u.prefix4), &(net->u.prefix4)))
+ return 1;
+
+ The new approach is much more general. If a peer address is supplied,
+ then we are routing to that prefix, so that's the address to compare
+ against (not the local address, which may not be unique).
+ */
+#ifndef COMPATIBILITY_MODE
+ /* new approach: more elegant and conceptually clean */
+ return prefix_match(net, CONNECTED_PREFIX(co));
+#else /* COMPATIBILITY_MODE */
+ /* match old (strange?) behavior */
+
/* Behaviour to match both Cisco where:
* iface address lies within network specified -> ospf
* and zebra 0.9[2ish-3]:
* exactly; this is not a test for falling within the prefix. This
* test is solely for compatibility with zebra.
*/
- if (if_is_pointopoint (co->ifp) && co->destination &&
+ if (CONNECTED_PEER(co) &&
IPV4_ADDR_SAME ( &(co->destination->u.prefix4), &(net->u.prefix4)))
return 1;
return 1;
return 0; /* no match */
+
+#endif /* COMPATIBILITY_MODE */
}
void
if (CHECK_FLAG(co->flags,ZEBRA_IFA_SECONDARY))
continue;
- if (CONNECTED_POINTOPOINT_HOST(co))
- addr = co->destination;
- else
- addr = co->address;
+ addr = CONNECTED_ID(co);
if (p->family == co->address->family
&& ! ospf_if_is_configured (ospf, &(addr->u.prefix4))
+2006-12-12 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
+
+ * rip_interface.c: (rip_interface_multicast_set) Use new CONNECTED_ID
+ macro to simplify logic.
+ (rip_request_interface_send) Fix minor bug: ipv4_broadcast_addr does
+ not give a useful result if prefixlen is 32 (we require a peer
+ address in such cases).
+ * ripd.c: (rip_update_interface) Fix same bug as above.
+
2006-09-11 Paul Jakma <paul.jakma@sun.com>
* ripd.c: (rip_read) remove gratuitous use of mid-function
rip_interface_multicast_set (int sock, struct connected *connected)
{
struct in_addr addr;
- struct prefix_ipv4 *p;
assert (connected != NULL);
- if (if_is_pointopoint(connected->ifp) && CONNECTED_DEST_HOST(connected))
- p = (struct prefix_ipv4 *) connected->destination;
- else
- p = (struct prefix_ipv4 *) connected->address;
-
- addr = p->prefix;
+ addr = CONNECTED_ID(connected)->u.prefix4;
if (setsockopt_multicast_ipv4 (sock, IP_MULTICAST_IF, addr, 0,
connected->ifp->ifindex) < 0)
memset (&to, 0, sizeof (struct sockaddr_in));
to.sin_port = htons (RIP_PORT_DEFAULT);
if (connected->destination)
- /* use specified broadcast or point-to-point destination addr */
+ /* use specified broadcast or peer destination addr */
to.sin_addr = connected->destination->u.prefix4;
- else
+ else if (connected->address->prefixlen < IPV4_MAX_PREFIXLEN)
/* calculate the appropriate broadcast address */
to.sin_addr.s_addr =
ipv4_broadcast_addr(connected->address->u.prefix4.s_addr,
connected->address->prefixlen);
+ else
+ /* do not know where to send the packet */
+ continue;
if (IS_RIP_DEBUG_EVENT)
zlog_debug ("SEND request to %s", inet_ntoa (to.sin_addr));
/* Destination address and port setting. */
memset (&to, 0, sizeof (struct sockaddr_in));
if (ifc->destination)
- /* use specified broadcast or point-to-point destination addr */
+ /* use specified broadcast or peer destination addr */
to.sin_addr = ifc->destination->u.prefix4;
- else
+ else if (ifc->address->prefixlen < IPV4_MAX_PREFIXLEN)
/* calculate the appropriate broadcast address */
to.sin_addr.s_addr =
ipv4_broadcast_addr(ifc->address->u.prefix4.s_addr,
ifc->address->prefixlen);
+ else
+ /* do not know where to send the packet */
+ return;
to.sin_port = htons (RIP_PORT_DEFAULT);
if (IS_RIP_DEBUG_EVENT)
- zlog_debug ("%s announce to %s on %s",
- if_is_pointopoint (ifc->ifp) ? "unicast" : "broadcast",
- inet_ntoa (to.sin_addr), ifc->ifp->name);
+ zlog_debug("%s announce to %s on %s",
+ CONNECTED_PEER(ifc) ? "unicast" : "broadcast",
+ inet_ntoa (to.sin_addr), ifc->ifp->name);
rip_output_process (ifc, &to, route_type, version);
}
+2006-12-12 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
+
+ * connected.c: (connected_up_ipv4, connected_down_ipv4,
+ connected_up_ipv6, connected_down_ipv6) Simplify logic using the
+ new CONNECTED_PREFIX macro.
+ (connected_add_ipv4) Set prefixlen in destination addresses (required
+ by the CONNECTED_PREFIX macro). Use CONNECTED_PEER macro instead
+ of testing for IFF_POINTOPOINT. Delete invalid warning message.
+ Warn about cases where the ZEBRA_IFA_PEER is set but no
+ destination address has been supplied (and turn off the flag).
+ (connected_add_ipv6) Add new flags argument so callers may set
+ the ZEBRA_IFA_PEER flag. If peer/broadcast address satisfies
+ IN6_IS_ADDR_UNSPECIFIED, then reject it with a warning.
+ Set prefixlen in destination address so CONNECTED_PREFIX will work.
+ * connected.h: (connected_add_ipv6) Add new flags argument so
+ callers may set the ZEBRA_IFA_PEER flag.
+ * interface.c: (connected_dump_vty) Use CONNECTED_PEER macro
+ to decide whether the destination address is a peer or broadcast
+ address (instead of checking IFF_BROADCAST and IFF_POINTOPOINT).
+ * if_ioctl.c: (if_getaddrs) Instead of setting a peer address
+ only when the IFF_POINTOPOINT is set, we now accept a peer
+ address whenever it is available and not the same as the local
+ address. Otherwise (no peer address assigned), we check
+ for a broadcast address (regardless of the IFF_BROADCAST flag).
+ And must now pass a flags value of ZEBRA_IFA_PEER to
+ connected_add_ipv4 when a peer address is assigned.
+ The same new logic is used with the IPv6 code as well (and we
+ pass the new flags argument to connected_add_ipv6).
+ (if_get_addr) Do not bother to check IFF_POINTOPOINT: just
+ issue the SIOCGIFDSTADDR ioctl and see if we get back
+ a peer address not matching the local address (and set
+ the ZEBRA_IFA_PEER in that case). If there's no peer address,
+ try to grab SIOCGIFBRDADDR regardless of whether IFF_BROADCAST is set.
+ * if_ioctl_solaris.c: (if_get_addr) Just try the SIOCGLIFDSTADDR ioctl
+ without bothering to check the IFF_POINTOPOINT flag. And if
+ no peer address was found, just try the SIOCGLIFBRDADDR ioctl
+ without checking the IFF_BROADCAST flag. Call connected_add_ipv4
+ and connected_add_ipv6 with appropriate flags.
+ * if_proc.c: (ifaddr_proc_ipv6) Must pass new flags argument to
+ connected_add_ipv6.
+ * kernel_socket.c: (ifam_read) Must pass new flags argument to
+ connected_add_ipv6.
+ * rt_netlink.c: (netlink_interface_addr) Copy logic from iproute2
+ to determine local and possible peer address (so there's no longer
+ a test for IFF_POINTOPOINT). Set ZEBRA_IFA_PEER flag appropriately.
+ Pass new flags argument to connected_add_ipv6.
+ (netlink_address) Test !CONNECTED_PEER instead of if_is_broadcast
+ to determine whether the connected destination address is a
+ broadcast address.
+
2006-12-08 Piotr Chytla <pch@packetconsulting.pl>
* zebra_rib.c: (static_install_ipv{4,6}) Case where existing
connected_up_ipv4 (struct interface *ifp, struct connected *ifc)
{
struct prefix_ipv4 p;
- struct prefix_ipv4 *addr;
- struct prefix_ipv4 *dest;
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
return;
- addr = (struct prefix_ipv4 *) ifc->address;
- dest = (struct prefix_ipv4 *) ifc->destination;
-
- memset (&p, 0, sizeof (struct prefix_ipv4));
- p.family = AF_INET;
- p.prefixlen = addr->prefixlen;
-
- /* Point-to-point check. */
- if (CONNECTED_POINTOPOINT_HOST(ifc))
- p.prefix = dest->prefix;
- else
- p.prefix = addr->prefix;
+ PREFIX_COPY_IPV4(&p, CONNECTED_PREFIX(ifc));
/* Apply mask to the network. */
apply_mask_ipv4 (&p);
p->prefixlen = prefixlen;
ifc->address = (struct prefix *) p;
- /* If there is broadcast or pointopoint address. */
+ /* 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 (ifp->flags & IFF_POINTOPOINT)
+ if (CONNECTED_PEER(ifc))
{
if (IPV4_ADDR_SAME(addr,broad))
- zlog_warn("warning: PtP interface %s has same local and peer "
+ zlog_warn("warning: 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
{
}
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);
+ {
+ 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)
connected_down_ipv4 (struct interface *ifp, struct connected *ifc)
{
struct prefix_ipv4 p;
- struct prefix_ipv4 *addr;
- struct prefix_ipv4 *dest;
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
return;
- addr = (struct prefix_ipv4 *)ifc->address;
- dest = (struct prefix_ipv4 *)ifc->destination;
-
- memset (&p, 0, sizeof (struct prefix_ipv4));
- p.family = AF_INET;
- p.prefixlen = addr->prefixlen;
-
- /* Point-to-point check. */
- if (CONNECTED_POINTOPOINT_HOST(ifc))
- p.prefix = dest->prefix;
- else
- p.prefix = addr->prefix;
+ PREFIX_COPY_IPV4(&p, CONNECTED_PREFIX(ifc));
/* Apply mask to the network. */
apply_mask_ipv4 (&p);
connected_up_ipv6 (struct interface *ifp, struct connected *ifc)
{
struct prefix_ipv6 p;
- struct prefix_ipv6 *addr;
- struct prefix_ipv6 *dest;
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
return;
- addr = (struct prefix_ipv6 *) ifc->address;
- dest = (struct prefix_ipv6 *) ifc->destination;
-
- memset (&p, 0, sizeof (struct prefix_ipv6));
- p.family = AF_INET6;
- p.prefixlen = addr->prefixlen;
-
- if (if_is_pointopoint (ifp) && dest)
- {
- if (IN6_IS_ADDR_UNSPECIFIED (&dest->prefix))
- p.prefix = addr->prefix;
- else
- p.prefix = dest->prefix;
- }
- else
- p.prefix = addr->prefix;
+ PREFIX_COPY_IPV6(&p, CONNECTED_PREFIX(ifc));
/* Apply mask to the network. */
apply_mask_ipv6 (&p);
/* Add connected IPv6 route to the interface. */
void
-connected_add_ipv6 (struct interface *ifp, struct in6_addr *addr,
+connected_add_ipv6 (struct interface *ifp, int flags, struct in6_addr *addr,
u_char prefixlen, struct in6_addr *broad,
const char *label)
{
/* Make connected structure. */
ifc = connected_new ();
ifc->ifp = ifp;
+ ifc->flags = flags;
/* Allocate new connected address. */
p = prefix_ipv6_new ();
p->prefixlen = prefixlen;
ifc->address = (struct prefix *) p;
- /* If there is broadcast or pointopoint address. */
+ /* If there is broadcast or peer address. */
if (broad)
{
- p = prefix_ipv6_new ();
- p->family = AF_INET6;
- IPV6_ADDR_COPY (&p->prefix, broad);
- ifc->destination = (struct prefix *) p;
+ 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. */
connected_down_ipv6 (struct interface *ifp, struct connected *ifc)
{
struct prefix_ipv6 p;
- struct prefix_ipv6 *addr;
- struct prefix_ipv6 *dest;
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
return;
- addr = (struct prefix_ipv6 *) ifc->address;
- dest = (struct prefix_ipv6 *) ifc->destination;
-
- memset (&p, 0, sizeof (struct prefix_ipv6));
- p.family = AF_INET6;
- p.prefixlen = addr->prefixlen;
-
- if (if_is_pointopoint (ifp) && dest)
- {
- if (IN6_IS_ADDR_UNSPECIFIED (&dest->prefix))
- p.prefix = addr->prefix;
- else
- p.prefix = dest->prefix;
- }
- else
- p.prefix = addr->prefix;
+ PREFIX_COPY_IPV6(&p, CONNECTED_PREFIX(ifc));
apply_mask_ipv6 (&p);
#ifdef HAVE_IPV6
extern void
-connected_add_ipv6 (struct interface *ifp, struct in6_addr *address,
+connected_add_ipv6 (struct interface *ifp, int flags, struct in6_addr *address,
u_char prefixlen, struct in6_addr *broad,
const char *label);
extern void
struct sockaddr_in *mask;
struct sockaddr_in *dest;
struct in_addr *dest_pnt;
+ int flags = 0;
addr = (struct sockaddr_in *) ifap->ifa_addr;
mask = (struct sockaddr_in *) ifap->ifa_netmask;
dest_pnt = NULL;
- if (ifap->ifa_flags & IFF_POINTOPOINT)
+ if (ifap->ifa_dstaddr &&
+ !IPV4_ADDR_SAME(&addr->sin_addr,
+ &((struct sockaddr_in *)
+ ifap->ifa_dstaddr)->sin_addr))
{
dest = (struct sockaddr_in *) ifap->ifa_dstaddr;
dest_pnt = &dest->sin_addr;
+ flags = ZEBRA_IFA_PEER;
}
-
- if (ifap->ifa_flags & IFF_BROADCAST)
+ else if (ifap->ifa_broadaddr &&
+ !IPV4_ADDR_SAME(&addr->sin_addr,
+ &((struct sockaddr_in *)
+ ifap->ifa_broadaddr)->sin_addr))
{
dest = (struct sockaddr_in *) ifap->ifa_broadaddr;
dest_pnt = &dest->sin_addr;
}
- connected_add_ipv4 (ifp, 0, &addr->sin_addr,
+ connected_add_ipv4 (ifp, flags, &addr->sin_addr,
prefixlen, dest_pnt, NULL);
}
#ifdef HAVE_IPV6
struct sockaddr_in6 *mask;
struct sockaddr_in6 *dest;
struct in6_addr *dest_pnt;
+ int flags = 0;
addr = (struct sockaddr_in6 *) ifap->ifa_addr;
mask = (struct sockaddr_in6 *) ifap->ifa_netmask;
dest_pnt = NULL;
- if (ifap->ifa_flags & IFF_POINTOPOINT)
+ if (ifap->ifa_dstaddr &&
+ !IPV6_ADDR_SAME(&addr->sin6_addr,
+ &((struct sockaddr_in6 *)
+ ifap->ifa_dstaddr)->sin6_addr))
{
- if (ifap->ifa_dstaddr)
- {
- dest = (struct sockaddr_in6 *) ifap->ifa_dstaddr;
- dest_pnt = &dest->sin6_addr;
- }
+ dest = (struct sockaddr_in6 *) ifap->ifa_dstaddr;
+ dest_pnt = &dest->sin6_addr;
+ flags = ZEBRA_IFA_PEER;
}
-
- if (ifap->ifa_flags & IFF_BROADCAST)
+ else if (ifap->ifa_broadaddr &&
+ !IPV6_ADDR_SAME(&addr->sin6_addr,
+ &((struct sockaddr_in6 *)
+ ifap->ifa_broadaddr)->sin6_addr))
{
- if (ifap->ifa_broadaddr)
- {
- dest = (struct sockaddr_in6 *) ifap->ifa_broadaddr;
- dest_pnt = &dest->sin6_addr;
- }
+ dest = (struct sockaddr_in6 *) ifap->ifa_broadaddr;
+ dest_pnt = &dest->sin6_addr;
}
#if defined(KAME)
}
#endif
- connected_add_ipv6 (ifp, &addr->sin6_addr, prefixlen,
+ connected_add_ipv6 (ifp, flags, &addr->sin6_addr, prefixlen,
dest_pnt, NULL);
}
#endif /* HAVE_IPV6 */
struct sockaddr_in dest;
struct in_addr *dest_pnt;
u_char prefixlen;
+ int flags = 0;
/* Interface's name and address family. */
strncpy (ifreq.ifr_name, ifp->name, IFNAMSIZ);
/* Point to point or borad cast address pointer init. */
dest_pnt = NULL;
- if (ifp->flags & IFF_POINTOPOINT)
+ ret = if_ioctl (SIOCGIFDSTADDR, (caddr_t) &ifreq);
+ if (ret < 0)
+ {
+ if (errno != EADDRNOTAVAIL)
+ zlog_warn ("SIOCGIFDSTADDR fail: %s", safe_strerror (errno));
+ }
+ else if (!IPV4_ADDR_SAME(&addr.sin_addr, &ifreq.ifr_dstaddr.sin_addr))
{
- ret = if_ioctl (SIOCGIFDSTADDR, (caddr_t) &ifreq);
- if (ret < 0)
- {
- if (errno != EADDRNOTAVAIL)
- {
- zlog_warn ("SIOCGIFDSTADDR fail: %s", safe_strerror (errno));
- return ret;
- }
- return 0;
- }
memcpy (&dest, &ifreq.ifr_dstaddr, sizeof (struct sockaddr_in));
dest_pnt = &dest.sin_addr;
+ flags = ZEBRA_IFA_PEER;
}
- if (ifp->flags & IFF_BROADCAST)
+ if (!dest_pnt)
{
ret = if_ioctl (SIOCGIFBRDADDR, (caddr_t) &ifreq);
if (ret < 0)
{
if (errno != EADDRNOTAVAIL)
- {
- zlog_warn ("SIOCGIFBRDADDR fail: %s", safe_strerror (errno));
- return ret;
- }
- return 0;
+ zlog_warn ("SIOCGIFBRDADDR fail: %s", safe_strerror (errno));
}
- memcpy (&dest, &ifreq.ifr_broadaddr, sizeof (struct sockaddr_in));
- dest_pnt = &dest.sin_addr;
+ else if (!IPV4_ADDR_SAME(&addr.sin_addr, &ifreq.ifr_broadaddr.sin_addr))
+ {
+ memcpy (&dest, &ifreq.ifr_broadaddr, sizeof (struct sockaddr_in));
+ dest_pnt = &dest.sin_addr;
+ }
}
/* Set address to the interface. */
- connected_add_ipv4 (ifp, 0, &addr.sin_addr, prefixlen, dest_pnt, NULL);
+ connected_add_ipv4 (ifp, flags, &addr.sin_addr, prefixlen, dest_pnt, NULL);
return 0;
}
char *dest_pnt = NULL;
u_char prefixlen = 0;
afi_t af;
+ int flags = 0;
/* Interface's name and address family.
* We need to use the logical interface name / label, if we've been
/* Point to point or broad cast address pointer init. */
dest_pnt = NULL;
- if (ifp->flags & IFF_POINTOPOINT)
+ if (AF_IOCTL (af, SIOCGLIFDSTADDR, (caddr_t) & lifreq) >= 0)
{
- ret = AF_IOCTL (af, SIOCGLIFDSTADDR, (caddr_t) & lifreq);
-
- if (ret < 0)
- {
- zlog_warn ("SIOCGLIFDSTADDR (%s) fail: %s",
- ifp->name, safe_strerror (errno));
- return ret;
- }
memcpy (&dest, &lifreq.lifr_dstaddr, ADDRLEN (addr));
if (af == AF_INET)
dest_pnt = (char *) &(SIN (&dest)->sin_addr);
else
dest_pnt = (char *) &(SIN6 (&dest)->sin6_addr);
+ flags = ZEBRA_IFA_PEER;
}
if (af == AF_INET)
memcpy (&mask, &lifreq.lifr_addr, ADDRLEN (addr));
prefixlen = ip_masklen (SIN (&mask)->sin_addr);
- if (ifp->flags & IFF_BROADCAST)
- {
- ret = if_ioctl (SIOCGLIFBRDADDR, (caddr_t) & lifreq);
- if (ret < 0)
- {
- if (errno != EADDRNOTAVAIL)
- {
- zlog_warn ("SIOCGLIFBRDADDR (%s) fail: %s",
- ifp->name, safe_strerror (errno));
- return ret;
- }
- return 0;
- }
+ if (!dest_pnt && (if_ioctl (SIOCGLIFBRDADDR, (caddr_t) & lifreq) >= 0))
+ {
memcpy (&dest, &lifreq.lifr_broadaddr, sizeof (struct sockaddr_in));
dest_pnt = (char *) &SIN (&dest)->sin_addr;
}
/* Set address to the interface. */
if (af == AF_INET)
- connected_add_ipv4 (ifp, 0, &SIN (addr)->sin_addr, prefixlen,
+ connected_add_ipv4 (ifp, flags, &SIN (addr)->sin_addr, prefixlen,
(struct in_addr *) dest_pnt, label);
#ifdef HAVE_IPV6
else if (af == AF_INET6)
- connected_add_ipv6 (ifp, &SIN6 (addr)->sin6_addr, prefixlen,
+ connected_add_ipv6 (ifp, flags, &SIN6 (addr)->sin6_addr, prefixlen,
(struct in6_addr *) dest_pnt, label);
#endif /* HAVE_IPV6 */
str2in6_addr (addr, &p.prefix);
p.prefixlen = plen;
- connected_add_ipv6 (ifp, &p.prefix, p.prefixlen, NULL, ifname);
+ connected_add_ipv6 (ifp, 0, &p.prefix, p.prefixlen, NULL, ifname);
}
fclose (fp);
return 0;
connected_dump_vty (struct vty *vty, struct connected *connected)
{
struct prefix *p;
- struct interface *ifp;
-
- /* Set interface pointer. */
- ifp = connected->ifp;
/* Print interface address. */
p = connected->address;
vty_out (vty, "/%d", p->prefixlen);
/* If there is destination address, print it. */
- p = connected->destination;
- if (p)
+ if (connected->destination)
{
- if (p->family == AF_INET)
- if (ifp->flags & IFF_BROADCAST)
- {
- vty_out (vty, " broadcast ");
- prefix_vty_out (vty, p);
- }
-
- if (ifp->flags & IFF_POINTOPOINT)
- {
- vty_out (vty, " pointopoint ");
- prefix_vty_out (vty, p);
- }
+ vty_out (vty, (CONNECTED_PEER(connected) ? " peer " : " broadcast "));
+ prefix_vty_out (vty, connected->destination);
}
if (CHECK_FLAG (connected->flags, ZEBRA_IFA_SECONDARY))
SET_IN6_LINKLOCAL_IFINDEX (addr.sin6.sin6_addr, 0);
if (ifam->ifam_type == RTM_NEWADDR)
- connected_add_ipv6 (ifp,
+ connected_add_ipv6 (ifp, 0,
&addr.sin6.sin6_addr,
ip6_masklen (mask.sin6.sin6_addr),
&brd.sin6.sin6_addr,
struct ifaddrmsg *ifa;
struct rtattr *tb[IFA_MAX + 1];
struct interface *ifp;
- void *addr = NULL;
- void *broad = NULL;
+ void *addr;
+ void *broad;
u_char flags = 0;
char *label = NULL;
}
}
+ /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */
+ if (tb[IFA_LOCAL] == NULL)
+ tb[IFA_LOCAL] = tb[IFA_ADDRESS];
if (tb[IFA_ADDRESS] == NULL)
tb[IFA_ADDRESS] = tb[IFA_LOCAL];
- if (ifp->flags & IFF_POINTOPOINT)
+ /* local interface address */
+ addr = (tb[IFA_LOCAL] ? RTA_DATA(tb[IFA_LOCAL]) : NULL);
+
+ /* is there a peer address? */
+ /* N.B. I do not understand why the memcmp compares 4 bytes regardless
+ of address family, but this is exactly how it appears in
+ print_addrinfo. I wonder if it should be RTA_PAYLOAD(tb[IFA_ADDRESS])
+ instead of 4... */
+ if (tb[IFA_ADDRESS] &&
+ memcmp(RTA_DATA(tb[IFA_ADDRESS]), RTA_DATA(tb[IFA_LOCAL]), 4))
{
- if (tb[IFA_LOCAL])
- {
- addr = RTA_DATA (tb[IFA_LOCAL]);
- if (tb[IFA_ADDRESS] &&
- memcmp(RTA_DATA(tb[IFA_ADDRESS]),RTA_DATA(tb[IFA_LOCAL]),4))
- /* if IFA_ADDRESS != IFA_LOCAL, then it's the peer address */
- broad = RTA_DATA (tb[IFA_ADDRESS]);
- else
- broad = NULL;
- }
- else
- {
- if (tb[IFA_ADDRESS])
- addr = RTA_DATA (tb[IFA_ADDRESS]);
- else
- addr = NULL;
- }
+ broad = RTA_DATA(tb[IFA_ADDRESS]);
+ SET_FLAG (flags, ZEBRA_IFA_PEER);
}
else
- {
- if (tb[IFA_ADDRESS])
- addr = RTA_DATA (tb[IFA_ADDRESS]);
- else
- addr = NULL;
-
- if (tb[IFA_BROADCAST])
- broad = RTA_DATA(tb[IFA_BROADCAST]);
- else
- broad = NULL;
- }
+ /* seeking a broadcast address */
+ broad = (tb[IFA_BROADCAST] ? RTA_DATA(tb[IFA_BROADCAST]) : NULL);
/* addr is primary key, SOL if we don't have one */
if (addr == NULL)
if (ifa->ifa_family == AF_INET6)
{
if (h->nlmsg_type == RTM_NEWADDR)
- connected_add_ipv6 (ifp,
+ connected_add_ipv6 (ifp, flags,
(struct in6_addr *) addr, ifa->ifa_prefixlen,
(struct in6_addr *) broad, label);
else
if (family == AF_INET && cmd == RTM_NEWADDR)
{
- if (if_is_broadcast (ifp) && ifc->destination)
+ if (!CONNECTED_PEER(ifc) && ifc->destination)
{
p = ifc->destination;
addattr_l (&req.n, sizeof req, IFA_BROADCAST, &p->u.prefix,
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