[PtP over ethernet] New peer flag allows much more addressing flexibility
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.
* 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.
* bgp_nexthop.c: (bgp_connected_add, bgp_connected_delete)
Simplify logic by using new CONNECTED_PREFIX macro.
* 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.
* 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.
diff --git a/zebra/ChangeLog b/zebra/ChangeLog
index 3ea4f57..6b50cf0 100644
--- a/zebra/ChangeLog
+++ b/zebra/ChangeLog
@@ -1,3 +1,53 @@
+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
diff --git a/zebra/connected.c b/zebra/connected.c
index 44002e7..3fe9717 100644
--- a/zebra/connected.c
+++ b/zebra/connected.c
@@ -173,24 +173,11 @@
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);
@@ -227,33 +214,22 @@
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
{
@@ -273,10 +249,20 @@
}
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)
@@ -293,24 +279,11 @@
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);
@@ -350,28 +323,11 @@
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);
@@ -390,7 +346,7 @@
/* 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)
{
@@ -400,6 +356,7 @@
/* Make connected structure. */
ifc = connected_new ();
ifc->ifp = ifp;
+ ifc->flags = flags;
/* Allocate new connected address. */
p = prefix_ipv6_new ();
@@ -408,13 +365,27 @@
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. */
@@ -431,28 +402,11 @@
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);
diff --git a/zebra/connected.h b/zebra/connected.h
index 28387e9..9595ddb 100644
--- a/zebra/connected.h
+++ b/zebra/connected.h
@@ -40,7 +40,7 @@
#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
diff --git a/zebra/if_ioctl.c b/zebra/if_ioctl.c
index 788184f..f357e15 100644
--- a/zebra/if_ioctl.c
+++ b/zebra/if_ioctl.c
@@ -249,6 +249,7 @@
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;
@@ -256,19 +257,25 @@
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
@@ -278,6 +285,7 @@
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;
@@ -285,22 +293,22 @@
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)
@@ -312,7 +320,7 @@
}
#endif
- connected_add_ipv6 (ifp, &addr->sin6_addr, prefixlen,
+ connected_add_ipv6 (ifp, flags, &addr->sin6_addr, prefixlen,
dest_pnt, NULL);
}
#endif /* HAVE_IPV6 */
@@ -335,6 +343,7 @@
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);
@@ -374,40 +383,36 @@
/* 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)
{
- 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;
- }
+ if (errno != EADDRNOTAVAIL)
+ zlog_warn ("SIOCGIFDSTADDR fail: %s", safe_strerror (errno));
+ }
+ else if (!IPV4_ADDR_SAME(&addr.sin_addr, &ifreq.ifr_dstaddr.sin_addr))
+ {
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;
}
diff --git a/zebra/if_ioctl_solaris.c b/zebra/if_ioctl_solaris.c
index 095bcab..4cb16c7 100644
--- a/zebra/if_ioctl_solaris.c
+++ b/zebra/if_ioctl_solaris.c
@@ -258,6 +258,7 @@
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
@@ -272,21 +273,14 @@
/* 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)
@@ -306,19 +300,8 @@
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;
}
@@ -348,11 +331,11 @@
/* 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 */
diff --git a/zebra/if_proc.c b/zebra/if_proc.c
index 367b0d6..3aec530 100644
--- a/zebra/if_proc.c
+++ b/zebra/if_proc.c
@@ -240,7 +240,7 @@
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;
diff --git a/zebra/interface.c b/zebra/interface.c
index 69124b3..ceee0e2 100644
--- a/zebra/interface.c
+++ b/zebra/interface.c
@@ -564,10 +564,6 @@
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;
@@ -576,21 +572,10 @@
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))
diff --git a/zebra/kernel_socket.c b/zebra/kernel_socket.c
index f384e97..ac06566 100644
--- a/zebra/kernel_socket.c
+++ b/zebra/kernel_socket.c
@@ -609,7 +609,7 @@
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,
diff --git a/zebra/rt_netlink.c b/zebra/rt_netlink.c
index 216625e..e2f1f9d 100644
--- a/zebra/rt_netlink.c
+++ b/zebra/rt_netlink.c
@@ -577,8 +577,8 @@
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;
@@ -637,41 +637,29 @@
}
}
+ /* 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)
@@ -707,7 +695,7 @@
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
@@ -1849,7 +1837,7 @@
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,