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2003-10-15 sowmini.varadhan@sun.com
* ripd/ripd.c: (rip_send_packet) use rip->sock for mcast sends,
instead of creating one socket per send. send source addr to
rip_update_interface.
(rip_update_process) should send an update on every connected
network for each interface.
(rip_request_send) should send a request on every connected
network for each interface.
* ripd/ripd.h: update prototype for rip_interface_multicast_set
* ripd/rip_interface.c: (rip_interface_multicast_set) reorganized
so that it can be called repeatedly for aliased interfaces (on
multiple networks).
This commit is contained in:
paul
parent
bf547fed75
commit
cc1131ab01
@ -137,28 +137,25 @@ rip_interface_new ()
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}
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void
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rip_interface_multicast_set (int sock, struct interface *ifp)
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rip_interface_multicast_set (int sock, struct connected *connected,
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int if_pointopoint)
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{
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int ret;
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listnode node;
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struct servent *sp;
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struct sockaddr_in from;
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for (node = listhead (ifp->connected); node; nextnode (node))
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{
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struct prefix_ipv4 *p;
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struct connected *connected;
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struct in_addr addr;
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struct prefix_ipv4 *p;
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connected = getdata (node);
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if (if_pointopoint)
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p = (struct prefix_ipv4 *) connected->destination;
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else
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p = (struct prefix_ipv4 *) connected->address;
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if (p->family == AF_INET)
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{
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addr = p->prefix;
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if (setsockopt_multicast_ipv4 (sock, IP_MULTICAST_IF,
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addr, 0, ifp->ifindex) < 0)
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addr, 0, 0) < 0)
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{
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zlog_warn ("Can't setsockopt IP_MULTICAST_IF to fd %d", sock);
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return;
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@ -176,6 +173,7 @@ rip_interface_multicast_set (int sock, struct interface *ifp)
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/* Address shoud be any address. */
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from.sin_family = AF_INET;
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addr = ((struct prefix_ipv4 *) connected->address)->prefix;
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from.sin_addr = addr;
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#ifdef HAVE_SIN_LEN
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from.sin_len = sizeof (struct sockaddr_in);
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@ -184,12 +182,11 @@ rip_interface_multicast_set (int sock, struct interface *ifp)
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if (ripd_privs.change (ZPRIVS_RAISE))
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zlog_err ("rip_interface_multicast_set: could not raise privs");
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ret = bind (sock, (struct sockaddr *) & from,
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sizeof (struct sockaddr_in));
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bind (sock, NULL, 0); /* unbind any previous association */
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ret = bind (sock, (struct sockaddr *) & from, sizeof (struct sockaddr_in));
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if (ret < 0)
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{
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zlog_warn ("Can't bind socket: %s", strerror (errno));
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return;
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}
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if (ripd_privs.change (ZPRIVS_LOWER))
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@ -198,8 +195,6 @@ rip_interface_multicast_set (int sock, struct interface *ifp)
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return;
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}
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}
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}
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/* Send RIP request packet to specified interface. */
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void
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95
ripd/ripd.c
95
ripd/ripd.c
@ -60,7 +60,8 @@ long rip_global_queries = 0;
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void rip_event (enum rip_event, int);
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void rip_output_process (struct interface *, struct prefix *,
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struct sockaddr_in *, int, u_char);
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struct sockaddr_in *, int, u_char,
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struct prefix_ipv4 *);
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/* RIP output routes type. */
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enum
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@ -1238,7 +1239,6 @@ rip_send_packet (caddr_t buf, int size, struct sockaddr_in *to,
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{
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int ret;
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struct sockaddr_in sin;
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int sock;
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/* Make destination address. */
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memset (&sin, 0, sizeof (struct sockaddr_in));
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@ -1250,39 +1250,29 @@ rip_send_packet (caddr_t buf, int size, struct sockaddr_in *to,
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/* When destination is specified, use it's port and address. */
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if (to)
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{
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sock = rip->sock;
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sin.sin_port = to->sin_port;
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sin.sin_addr = to->sin_addr;
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}
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else
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{
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sock = socket (AF_INET, SOCK_DGRAM, 0);
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sockopt_broadcast (sock);
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sockopt_reuseaddr (sock);
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sockopt_reuseport (sock);
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sin.sin_port = htons (RIP_PORT_DEFAULT);
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sin.sin_addr.s_addr = htonl (INADDR_RIP_GROUP);
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/* Set multicast interface. */
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rip_interface_multicast_set (sock, ifp);
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/* caller has set multicast interface */
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}
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ret = sendto (sock, buf, size, 0, (struct sockaddr *)&sin,
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ret = sendto (rip->sock, buf, size, 0, (struct sockaddr *)&sin,
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sizeof (struct sockaddr_in));
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if (IS_RIP_DEBUG_EVENT)
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zlog_info ("SEND to socket %d port %d addr %s",
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sock, ntohs (sin.sin_port), inet_ntoa(sin.sin_addr));
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zlog_info ("SEND to %s.%d", inet_ntoa(sin.sin_addr),
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ntohs (sin.sin_port));
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if (ret < 0)
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zlog_warn ("can't send packet : %s", strerror (errno));
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if (! to)
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close (sock);
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return ret;
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}
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@ -1454,8 +1444,19 @@ rip_request_process (struct rip_packet *packet, int size,
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ntohs (rte->family) == 0 &&
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ntohl (rte->metric) == RIP_METRIC_INFINITY)
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{
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struct prefix_ipv4 saddr;
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/* saddr will be used for determining which routes to split-horizon.
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Since the source address we'll pick will be on the same subnet as the
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destination, for the purpose of split-horizoning, we'll
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pretend that "from" is our source address. */
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saddr.family = AF_INET;
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saddr.prefixlen = IPV4_MAX_BITLEN;
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saddr.prefix = from->sin_addr;
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/* All route with split horizon */
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rip_output_process (ifp, NULL, from, rip_all_route, packet->version);
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rip_output_process (ifp, NULL, from, rip_all_route, packet->version,
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&saddr);
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}
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else
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{
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@ -1979,7 +1980,8 @@ rip_write_rte (int num, struct stream *s, struct prefix_ipv4 *p,
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/* Send update to the ifp or spcified neighbor. */
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void
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rip_output_process (struct interface *ifp, struct prefix *ifaddr,
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struct sockaddr_in *to, int route_type, u_char version)
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struct sockaddr_in *to, int route_type, u_char version,
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struct prefix_ipv4 *saddr)
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{
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int ret;
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struct stream *s;
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@ -2118,7 +2120,7 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
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/* We perform split horizon for RIP and connected route. */
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if ((rinfo->type == ZEBRA_ROUTE_RIP ||
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rinfo->type == ZEBRA_ROUTE_CONNECT) &&
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rinfo->ifindex == ifp->ifindex)
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prefix_match((struct prefix *)p, (struct prefix *)saddr))
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continue;
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}
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@ -2247,7 +2249,8 @@ rip_output_process (struct interface *ifp, struct prefix *ifaddr,
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/* Send RIP packet to the interface. */
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void
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rip_update_interface (struct interface *ifp, u_char version, int route_type)
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rip_update_interface (struct interface *ifp, u_char version, int route_type,
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struct prefix_ipv4 *saddr)
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{
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struct prefix_ipv4 *p;
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struct connected *connected;
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@ -2260,7 +2263,8 @@ rip_update_interface (struct interface *ifp, u_char version, int route_type)
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if (IS_RIP_DEBUG_EVENT)
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zlog_info ("multicast announce on %s ", ifp->name);
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rip_output_process (ifp, NULL, NULL, route_type, rip->version_send);
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rip_output_process (ifp, NULL, NULL, route_type, rip->version_send,
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saddr);
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return;
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}
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@ -2288,7 +2292,7 @@ rip_update_interface (struct interface *ifp, u_char version, int route_type)
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inet_ntoa (to.sin_addr), ifp->name);
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rip_output_process (ifp, connected->address, &to, route_type,
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rip->version_send);
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rip->version_send, saddr);
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}
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}
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}
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@ -2298,7 +2302,8 @@ rip_update_interface (struct interface *ifp, u_char version, int route_type)
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void
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rip_update_process (int route_type)
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{
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listnode node;
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listnode node, ifnode;
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struct connected *connected;
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struct interface *ifp;
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struct rip_interface *ri;
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struct route_node *rp;
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@ -2336,15 +2341,29 @@ rip_update_process (int route_type)
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ifp->ifindex);
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}
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/* send update on each connected network */
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LIST_LOOP(ifp->connected, connected, ifnode)
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{
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struct prefix_ipv4 *ifaddr;
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/* If there is no version configuration in the interface,
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use rip's version setting. */
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{
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int vsend = ((ri->ri_send == RI_RIP_UNSPEC) ?
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rip->version_send : ri->ri_send);
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ifaddr = (struct prefix_ipv4 *) connected->address;
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if (ifaddr->family != AF_INET)
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continue;
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rip_interface_multicast_set(rip->sock, connected,
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if_is_pointopoint(ifp));
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if (vsend & RIPv1)
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rip_update_interface (ifp, RIPv1, route_type);
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rip_update_interface (ifp, RIPv1, route_type, ifaddr);
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if (vsend & RIPv2)
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rip_update_interface (ifp, RIPv2, route_type);
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rip_update_interface (ifp, RIPv2, route_type, ifaddr);
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}
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}
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}
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@ -2369,7 +2388,7 @@ rip_update_process (int route_type)
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to.sin_port = htons (RIP_PORT_DEFAULT);
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/* RIP version is rip's configuration. */
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rip_output_process (ifp, NULL, &to, route_type, rip->version_send);
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rip_output_process (ifp, NULL, &to, route_type, rip->version_send, p);
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}
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}
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@ -2549,6 +2568,8 @@ rip_request_send (struct sockaddr_in *to, struct interface *ifp,
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{
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struct rte *rte;
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struct rip_packet rip_packet;
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listnode node;
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struct connected *connected;
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memset (&rip_packet, 0, sizeof (rip_packet));
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@ -2557,7 +2578,23 @@ rip_request_send (struct sockaddr_in *to, struct interface *ifp,
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rte = rip_packet.rte;
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rte->metric = htonl (RIP_METRIC_INFINITY);
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return rip_send_packet ((caddr_t) &rip_packet, sizeof (rip_packet), to, ifp);
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/* send request on each connected network */
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LIST_LOOP(ifp->connected, connected, node)
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{
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struct prefix_ipv4 *p;
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p = (struct prefix_ipv4 *) connected->address;
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if (p->family != AF_INET)
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continue;
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rip_interface_multicast_set(rip->sock, connected,
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if_is_pointopoint(ifp));
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if (rip_send_packet ((caddr_t) &rip_packet, sizeof (rip_packet),
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to, ifp) != sizeof (rip_packet))
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return -1;
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}
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return sizeof (rip_packet);
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}
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int
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@ -385,7 +385,7 @@ void rip_redistribute_delete (int, int, struct prefix_ipv4 *, unsigned int);
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void rip_redistribute_withdraw (int);
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void rip_zebra_ipv4_add (struct prefix_ipv4 *, struct in_addr *, u_int32_t, u_char);
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void rip_zebra_ipv4_delete (struct prefix_ipv4 *, struct in_addr *, u_int32_t);
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void rip_interface_multicast_set (int, struct interface *);
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void rip_interface_multicast_set (int, struct connected *, int);
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void rip_distribute_update_interface (struct interface *);
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void rip_if_rmap_update_interface (struct interface *);
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