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-rw-r--r--ripd/ChangeLog12
-rw-r--r--ripd/rip_interface.c30
-rw-r--r--ripd/ripd.c216
3 files changed, 125 insertions, 133 deletions
diff --git a/ripd/ChangeLog b/ripd/ChangeLog
index ae67e72d..8618cb6f 100644
--- a/ripd/ChangeLog
+++ b/ripd/ChangeLog
@@ -1,3 +1,15 @@
+2004-10-22 Paul Jakma <paul@dishone.st>
+
+ * ripd.c: Collapse redundant passing of various address structs,
+ struct interface and struct connected as arguments to functions
+ down to two key arguments, namely struct connected and, possibly,
+ address of source/destination. Testing for RIPv1 would be useful.
+ (rip_read) lookup struct connected for the received packet, pass
+ it on.
+ * rip_interface.c: With previous changes, we no longer have to tread
+ carefully with struct connected, as it will always be there and
+ valid.
+
2004-10-19 Andrew J. Schorr <aschorr@telemetry-investments.com>
* ripd.c: (rip_update_interface) if connected->destination is NULL,
diff --git a/ripd/rip_interface.c b/ripd/rip_interface.c
index 19f6f114..c1c0a45a 100644
--- a/ripd/rip_interface.c
+++ b/ripd/rip_interface.c
@@ -145,19 +145,15 @@ rip_interface_multicast_set (int sock, struct connected *connected)
struct sockaddr_in from;
struct in_addr addr;
struct prefix_ipv4 *p;
-
- if (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;
- }
- else
- {
- addr.s_addr = INADDR_ANY;
- }
+
+ 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;
if (setsockopt_multicast_ipv4 (sock, IP_MULTICAST_IF, addr, 0,
connected->ifp->ifindex) < 0)
@@ -165,7 +161,7 @@ rip_interface_multicast_set (int sock, struct connected *connected)
zlog_warn ("Can't setsockopt IP_MULTICAST_IF on fd %d to "
"source address %s for interface %s",
sock, inet_ntoa(addr),
- (connected ? connected->ifp->name : "(unknown)"));
+ connected->ifp->name);
return;
}
@@ -181,9 +177,7 @@ rip_interface_multicast_set (int sock, struct connected *connected)
/* Address should be any address. */
from.sin_family = AF_INET;
- if (connected)
- addr = ((struct prefix_ipv4 *) connected->address)->prefix;
- from.sin_addr = addr;
+ from.sin_addr = connected->address->u.prefix4;
#ifdef HAVE_SIN_LEN
from.sin_len = sizeof (struct sockaddr_in);
#endif /* HAVE_SIN_LEN */
@@ -198,7 +192,7 @@ rip_interface_multicast_set (int sock, struct connected *connected)
"interface %s: %s",
sock,inet_ntoa(from.sin_addr),
(int)ntohs(from.sin_port),
- (connected ? connected->ifp->name : "(unknown)"),
+ connected->ifp->name,
strerror (errno));
}
diff --git a/ripd/ripd.c b/ripd/ripd.c
index 94324f03..0f854cf3 100644
--- a/ripd/ripd.c
+++ b/ripd/ripd.c
@@ -64,9 +64,7 @@ long rip_global_queries = 0;
/* Prototypes. */
void rip_event (enum rip_event, int);
-void rip_output_process (struct interface *, struct prefix *,
- struct sockaddr_in *, int, u_char,
- struct connected *, struct prefix_ipv4 *);
+void rip_output_process (struct connected *, struct sockaddr_in *, int, u_char);
/* RIP output routes type. */
enum
@@ -1042,13 +1040,12 @@ rip_auth_md5_set (struct stream *s, struct interface *ifp)
/* RIP routing information. */
void
rip_response_process (struct rip_packet *packet, int size,
- struct sockaddr_in *from, struct interface *ifp)
+ struct sockaddr_in *from, struct connected *ifc)
{
caddr_t lim;
struct rte *rte;
struct prefix_ipv4 ifaddr;
struct prefix_ipv4 ifaddrclass;
- struct connected *c;
int subnetted;
/* We don't know yet. */
@@ -1207,18 +1204,14 @@ rip_response_process (struct rip_packet *packet, int size,
u_int32_t destination;
if (subnetted == -1)
- {
- c = connected_lookup_address (ifp, from->sin_addr);
- if (c != NULL)
- {
- memcpy (&ifaddr, c->address, sizeof (struct prefix_ipv4));
- memcpy (&ifaddrclass, &ifaddr, sizeof (struct prefix_ipv4));
- apply_classful_mask_ipv4 (&ifaddrclass);
- subnetted = 0;
- if (ifaddr.prefixlen > ifaddrclass.prefixlen)
- subnetted = 1;
- }
- }
+ {
+ memcpy (&ifaddr, ifc->address, sizeof (struct prefix_ipv4));
+ memcpy (&ifaddrclass, &ifaddr, sizeof (struct prefix_ipv4));
+ apply_classful_mask_ipv4 (&ifaddrclass);
+ subnetted = 0;
+ if (ifaddr.prefixlen > ifaddrclass.prefixlen)
+ subnetted = 1;
+ }
destination = ntohl (rte->prefix.s_addr);
@@ -1277,18 +1270,23 @@ rip_response_process (struct rip_packet *packet, int size,
}
/* Routing table updates. */
- rip_rte_process (rte, from, ifp);
+ rip_rte_process (rte, from, ifc->ifp);
}
}
-/* RIP packet send to destination address. */
+/* RIP packet send to destination address, on interface denoted by
+ * by connected argument. NULL to argument denotes destination should be
+ * should be RIP multicast group
+ */
int
-rip_send_packet (u_char * buf, int size, struct sockaddr_in *to,
- struct interface *ifp, struct connected *connected)
+rip_send_packet (u_char * buf, int size, struct sockaddr_in *to,
+ struct connected *ifc)
{
int ret, send_sock;
struct sockaddr_in sin;
-
+
+ assert (ifc != NULL);
+
if (IS_RIP_DEBUG_PACKET)
{
char dst[20];
@@ -1302,10 +1300,10 @@ rip_send_packet (u_char * buf, int size, struct sockaddr_in *to,
strcpy(dst, inet_ntoa(sin.sin_addr));
}
zlog_info("rip_send_packet %s > %s (%s)",
- (connected ? inet_ntoa(connected->address->u.prefix4) : ""),
- dst, ifp->name);
+ inet_ntoa(ifc->address->u.prefix4),
+ dst, ifc->ifp->name);
}
- if (connected && connected->flags & ZEBRA_IFA_SECONDARY)
+ if ( CHECK_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY) )
{
/*
* ZEBRA_IFA_SECONDARY is set on linux when an interface is configured
@@ -1361,7 +1359,7 @@ rip_send_packet (u_char * buf, int size, struct sockaddr_in *to,
#ifdef RIP_RECVMSG
setsockopt_pktinfo (send_sock);
#endif /* RIP_RECVMSG */
- rip_interface_multicast_set (send_sock, connected);
+ rip_interface_multicast_set (send_sock, ifc);
}
ret = sendto (send_sock, buf, size, 0, (struct sockaddr *)&sin,
@@ -1507,7 +1505,7 @@ rip_redistribute_delete (int type, int sub_type, struct prefix_ipv4 *p,
/* Response to request called from rip_read ().*/
void
rip_request_process (struct rip_packet *packet, int size,
- struct sockaddr_in *from, struct interface *ifp)
+ struct sockaddr_in *from, struct connected *ifc)
{
caddr_t lim;
struct rte *rte;
@@ -1517,18 +1515,18 @@ rip_request_process (struct rip_packet *packet, int size,
struct rip_interface *ri;
/* Does not reponse to the requests on the loopback interfaces */
- if (if_is_loopback (ifp))
+ if (if_is_loopback (ifc->ifp))
return;
/* Check RIP process is enabled on this interface. */
- ri = ifp->info;
+ ri = ifc->ifp->info;
if (! ri->running)
return;
/* When passive interface is specified, suppress responses */
if (ri->passive)
return;
-
+
/* RIP peer update. */
rip_peer_update (from, packet->version);
@@ -1559,8 +1557,7 @@ rip_request_process (struct rip_packet *packet, int size,
saddr.prefix = from->sin_addr;
/* All route with split horizon */
- rip_output_process (ifp, NULL, from, rip_all_route, packet->version,
- NULL, &saddr);
+ rip_output_process (ifc, from, rip_all_route, packet->version);
}
else
{
@@ -1592,7 +1589,7 @@ rip_request_process (struct rip_packet *packet, int size,
}
packet->command = RIP_RESPONSE;
- rip_send_packet ((u_char *)packet, size, from, ifp, NULL);
+ rip_send_packet ((u_char *)packet, size, from, ifc);
}
rip_global_queries++;
}
@@ -1686,6 +1683,7 @@ rip_read (struct thread *t)
int len;
socklen_t fromlen;
struct interface *ifp;
+ struct connected *ifc;
struct rip_interface *ri;
/* Fetch socket then register myself. */
@@ -1717,7 +1715,7 @@ rip_read (struct thread *t)
/* Which interface is this packet comes from. */
ifp = if_lookup_address (from.sin_addr);
-
+
/* RIP packet received */
if (IS_RIP_DEBUG_EVENT)
zlog_info ("RECV packet from %s port %d on %s",
@@ -1727,7 +1725,15 @@ rip_read (struct thread *t)
/* If this packet come from unknown interface, ignore it. */
if (ifp == NULL)
{
- zlog_info ("packet comes from unknown interface");
+ zlog_info ("rip_read: packet comes from unknown interface");
+ return -1;
+ }
+
+ ifc = connected_lookup_address (ifp, from.sin_addr);
+
+ if (ifc == NULL)
+ {
+ zlog_info ("rip_read: packet comes from unknown network");
return -1;
}
@@ -1924,11 +1930,11 @@ rip_read (struct thread *t)
switch (packet->command)
{
case RIP_RESPONSE:
- rip_response_process (packet, len, &from, ifp);
+ rip_response_process (packet, len, &from, ifc);
break;
case RIP_REQUEST:
case RIP_POLL:
- rip_request_process (packet, len, &from, ifp);
+ rip_request_process (packet, len, &from, ifc);
break;
case RIP_TRACEON:
case RIP_TRACEOFF:
@@ -2094,9 +2100,8 @@ rip_write_rte (int num, struct stream *s, struct prefix_ipv4 *p,
/* Send update to the ifp or spcified neighbor. */
void
-rip_output_process (struct interface *ifp, struct prefix *ifaddr,
- struct sockaddr_in *to, int route_type, u_char version,
- struct connected *connected, struct prefix_ipv4 *saddr)
+rip_output_process (struct connected *ifc, struct sockaddr_in *to,
+ int route_type, u_char version)
{
int ret;
struct stream *s;
@@ -2106,7 +2111,6 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
struct prefix_ipv4 *p;
struct prefix_ipv4 classfull;
struct prefix_ipv4 ifaddrclass;
- struct connected *c;
int num;
int rtemax;
int subnetted = 0;
@@ -2118,7 +2122,7 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
zlog_info ("update routes to neighbor %s", inet_ntoa (to->sin_addr));
else
zlog_info ("update routes on interface %s ifindex %d",
- ifp->name, ifp->ifindex);
+ ifc->ifp->name, ifc->ifp->ifindex);
}
/* Set output stream. */
@@ -2130,7 +2134,7 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
rtemax = (RIP_PACKET_MAXSIZ - 4) / 20;
/* Get RIP interface. */
- ri = ifp->info;
+ ri = ifc->ifp->info;
/* If output interface is in simple password authentication mode, we
need space for authentication data. */
@@ -2162,22 +2166,10 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
if (version == RIPv1)
{
- if (ifaddr == NULL)
- {
- c = connected_lookup_address (ifp, to->sin_addr);
- if (c != NULL)
- ifaddr = c->address;
- }
- if (ifaddr == NULL)
- {
- zlog_warn ("cannot find source address for packets to neighbor %s",
- inet_ntoa (to->sin_addr));
- return;
- }
- memcpy (&ifaddrclass, ifaddr, sizeof (struct prefix_ipv4));
+ memcpy (&ifaddrclass, ifc->address, sizeof (struct prefix_ipv4));
apply_classful_mask_ipv4 (&ifaddrclass);
subnetted = 0;
- if (ifaddr->prefixlen > ifaddrclass.prefixlen)
+ if (ifc->address->prefixlen > ifaddrclass.prefixlen)
subnetted = 1;
}
@@ -2199,7 +2191,7 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
if (subnetted &&
prefix_match ((struct prefix *) &ifaddrclass, &rp->p))
{
- if ((ifaddr->prefixlen != rp->p.prefixlen) &&
+ if ((ifc->address->prefixlen != rp->p.prefixlen) &&
(rp->p.prefixlen != 32))
continue;
}
@@ -2243,10 +2235,10 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
* configured on the same interface).
*/
if (rinfo->type == ZEBRA_ROUTE_RIP &&
- rinfo->ifindex == ifp->ifindex)
+ rinfo->ifindex == ifc->ifp->ifindex)
continue;
if (rinfo->type == ZEBRA_ROUTE_CONNECT &&
- prefix_match((struct prefix *)p, (struct prefix *)saddr))
+ prefix_match((struct prefix *)p, ifc->address))
continue;
}
@@ -2255,7 +2247,7 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
rinfo->nexthop_out.s_addr = 0;
rinfo->metric_out = rinfo->metric;
rinfo->tag_out = rinfo->tag;
- rinfo->ifindex_out = ifp->ifindex;
+ rinfo->ifindex_out = ifc->ifp->ifindex;
/* In order to avoid some local loops,
* if the RIP route has a nexthop via this interface, keep the nexthop,
@@ -2264,7 +2256,7 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
* to avoid an IGP multi-level recursive look-up.
* see (4.4)
*/
- if (rinfo->ifindex == ifp->ifindex)
+ if (rinfo->ifindex == ifc->ifp->ifindex)
rinfo->nexthop_out = rinfo->nexthop;
/* Interface route-map */
@@ -2321,7 +2313,7 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
/* Apply offset-list */
if (rinfo->metric != RIP_METRIC_INFINITY)
- rip_offset_list_apply_out (p, ifp, &rinfo->metric_out);
+ rip_offset_list_apply_out (p, ifc->ifp, &rinfo->metric_out);
if (rinfo->metric_out > RIP_METRIC_INFINITY)
rinfo->metric_out = RIP_METRIC_INFINITY;
@@ -2341,22 +2333,22 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
* configured on the same interface).
*/
if (rinfo->type == ZEBRA_ROUTE_RIP &&
- rinfo->ifindex == ifp->ifindex)
+ rinfo->ifindex == ifc->ifp->ifindex)
rinfo->metric_out = RIP_METRIC_INFINITY;
if (rinfo->type == ZEBRA_ROUTE_CONNECT &&
- prefix_match((struct prefix *)p, (struct prefix *)saddr))
+ prefix_match((struct prefix *)p, ifc->address))
rinfo->metric_out = RIP_METRIC_INFINITY;
}
/* Write RTE to the stream. */
- num = rip_write_rte (num, s, p, version, rinfo, to ? NULL : ifp);
+ num = rip_write_rte (num, s, p, version, rinfo, to ? NULL : ifc->ifp);
if (num == rtemax)
{
if (version == RIPv2 && ri->auth_type == RIP_AUTH_MD5)
- rip_auth_md5_set (s, ifp);
+ rip_auth_md5_set (s, ifc->ifp);
ret = rip_send_packet (STREAM_DATA (s), stream_get_endp (s),
- to, ifp, connected);
+ to, ifc);
if (ret >= 0 && IS_RIP_DEBUG_SEND)
rip_packet_dump ((struct rip_packet *)STREAM_DATA (s),
@@ -2370,10 +2362,9 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
if (num != 0)
{
if (version == RIPv2 && ri->auth_type == RIP_AUTH_MD5)
- rip_auth_md5_set (s, ifp);
+ rip_auth_md5_set (s, ifc->ifp);
- ret = rip_send_packet (STREAM_DATA (s), stream_get_endp (s), to, ifp,
- connected);
+ ret = rip_send_packet (STREAM_DATA (s), stream_get_endp (s), to, ifc);
if (ret >= 0 && IS_RIP_DEBUG_SEND)
rip_packet_dump ((struct rip_packet *)STREAM_DATA (s),
@@ -2388,55 +2379,44 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
/* Send RIP packet to the interface. */
void
-rip_update_interface (struct interface *ifp, u_char version, int route_type,
- struct connected *sconn)
+rip_update_interface (struct connected *ifc, u_char version, int route_type)
{
- struct connected *connected;
- struct listnode *node;
struct sockaddr_in to;
- struct prefix_ipv4 *saddr = (struct prefix_ipv4 *) sconn->address;
/* When RIP version is 2 and multicast enable interface. */
- if (version == RIPv2 && if_is_multicast (ifp))
+ if (version == RIPv2 && if_is_multicast (ifc->ifp))
{
if (IS_RIP_DEBUG_EVENT)
- zlog_info ("multicast announce on %s ", ifp->name);
+ zlog_info ("multicast announce on %s ", ifc->ifp->name);
- rip_output_process (ifp, NULL, NULL, route_type, version,
- sconn, saddr);
+ rip_output_process (ifc, NULL, route_type, version);
return;
}
-
+
/* If we can't send multicast packet, send it with unicast. */
- if (if_is_broadcast (ifp) || if_is_pointopoint (ifp))
+ if (if_is_broadcast (ifc->ifp) || if_is_pointopoint (ifc->ifp))
{
- for (node = listhead (ifp->connected); node; nextnode (node))
- {
- connected = getdata (node);
-
- if (connected->address->family == AF_INET)
- {
- /* Destination address and port setting. */
- memset (&to, 0, sizeof (struct sockaddr_in));
- if (connected->destination)
- /* use specified broadcast or point-to-point destination addr */
- to.sin_addr = connected->destination->u.prefix4;
- else
- /* calculate the appropriate broadcast address */
- to.sin_addr.s_addr =
- ipv4_broadcast_addr(connected->address->u.prefix4.s_addr,
- connected->address->prefixlen);
- to.sin_port = htons (RIP_PORT_DEFAULT);
+ if (ifc->address->family == AF_INET)
+ {
+ /* Destination address and port setting. */
+ memset (&to, 0, sizeof (struct sockaddr_in));
+ if (ifc->destination)
+ /* use specified broadcast or point-to-point destination addr */
+ to.sin_addr = ifc->destination->u.prefix4;
+ else
+ /* calculate the appropriate broadcast address */
+ to.sin_addr.s_addr =
+ ipv4_broadcast_addr(ifc->address->u.prefix4.s_addr,
+ ifc->address->prefixlen);
+ to.sin_port = htons (RIP_PORT_DEFAULT);
- if (IS_RIP_DEBUG_EVENT)
- zlog_info ("%s announce to %s on %s",
- if_is_pointopoint (ifp) ? "unicast" : "broadcast",
- inet_ntoa (to.sin_addr), ifp->name);
+ if (IS_RIP_DEBUG_EVENT)
+ zlog_info ("%s announce to %s on %s",
+ if_is_pointopoint (ifc->ifp) ? "unicast" : "broadcast",
+ inet_ntoa (to.sin_addr), ifc->ifp->name);
- rip_output_process (ifp, connected->address, &to, route_type,
- version, connected, saddr);
- }
- }
+ rip_output_process (ifc, &to, route_type, version);
+ }
}
}
@@ -2502,9 +2482,9 @@ rip_update_process (int route_type)
continue;
if ((vsend & RIPv1) && !done)
- rip_update_interface (ifp, RIPv1, route_type, connected);
+ rip_update_interface (connected, RIPv1, route_type);
if ((vsend & RIPv2) && if_is_multicast(ifp))
- rip_update_interface (ifp, RIPv2, route_type, connected);
+ rip_update_interface (connected, RIPv2, route_type);
done = 1;
if (!(vsend & RIPv2) || !if_is_multicast(ifp))
break;
@@ -2522,19 +2502,25 @@ rip_update_process (int route_type)
ifp = if_lookup_address (p->prefix);
if (! ifp)
{
- zlog_warn ("Neighbor %s doesn't exist direct connected network",
+ zlog_warn ("Neighbor %s doesnt have connected interface!",
inet_ntoa (p->prefix));
continue;
}
-
+
+ if ( (connected = connected_lookup_address (ifp, p->prefix)) == NULL)
+ {
+ zlog_warn ("Neighbor %s doesnt have connected network",
+ inet_ntoa (p->prefix));
+ continue;
+ }
+
/* Set destination address and port */
memset (&to, 0, sizeof (struct sockaddr_in));
to.sin_addr = p->prefix;
to.sin_port = htons (RIP_PORT_DEFAULT);
/* RIP version is rip's configuration. */
- rip_output_process (ifp, NULL, &to, route_type, rip->version_send,
- NULL, p);
+ rip_output_process (connected, &to, route_type, rip->version_send);
}
}
@@ -2731,7 +2717,7 @@ rip_request_send (struct sockaddr_in *to, struct interface *ifp,
* over each connected address for this case.
*/
if (rip_send_packet ((u_char *) &rip_packet, sizeof (rip_packet),
- to, ifp, connected) != sizeof (rip_packet))
+ to, connected) != sizeof (rip_packet))
return -1;
else
return sizeof (rip_packet);
@@ -2748,7 +2734,7 @@ rip_request_send (struct sockaddr_in *to, struct interface *ifp,
continue;
if (rip_send_packet ((u_char *) &rip_packet, sizeof (rip_packet),
- to, ifp, connected) != sizeof (rip_packet))
+ to, connected) != sizeof (rip_packet))
return -1;
}
return sizeof (rip_packet);
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-25 08:12:09 +0000