fix set never used warnings

(This patch was modified to leave calls to stream_getl() in place, they
are necessary for the stream's internal pointer to advance to the
correct position. -- Denis)

Signed-off-by: Denis Ovsienko <infrastation@yandex.ru>

Fix gcc warnings about varables that are set but never used.

* bgpd/bgp_attr.c
  * cluster_unintern(): ret
  * transit_unintern(): ret
  * bgp_attr_default_intern(): attre
  * bgp_mp_reach_parse(): rd_high, rd_low
* bgpd/bgp_route.c
  * bgp_announce_check_rsclient(): bgp
* bgpd/bgp_zebra.c
  * zebra_read_ipv4(): ifindex
  * zebra_read_ipv6(): ifindex
* bgpd/bgpd.c
  * bgp_config_write_peer(): filter
* lib/distribute.c
  * distribute_list_all(): dist
  * distribute_list(): dist
  * distribute_list_prefix_all(): dist
  * distribute_list_prefix(): dist
* lib/if_rmap.c
  * if_rmap(): if_rmap
* lib/vty.c
  * vty_accept(): vty
* lib/zclient.c
  * zclient_read(): ret
* zebra/irdp_interface.c
  * if_group(): zi
* zebra/rt_netlink.c
  * kernel_read(): ret, sock

bgpd/bgp_attr.c

@@ -175,14 +175,12 @@ cluster_intern (struct cluster_list *cluster)
 void
 cluster_unintern (struct cluster_list *cluster)
 {
-  struct cluster_list *ret;
-
   if (cluster->refcnt)
     cluster->refcnt--;
 
   if (cluster->refcnt == 0)
     {
-      ret = hash_release (cluster_hash, cluster);
+      hash_release (cluster_hash, cluster);
       cluster_free (cluster);
     }
 }
@@ -235,14 +233,12 @@ transit_intern (struct transit *transit)
 void
 transit_unintern (struct transit *transit)
 {
-  struct transit *ret;
-
   if (transit->refcnt)
     transit->refcnt--;
 
   if (transit->refcnt == 0)
     {
-      ret = hash_release (transit_hash, transit);
+      hash_release (transit_hash, transit);
       transit_free (transit);
     }
 }
@@ -552,10 +548,9 @@ bgp_attr_default_intern (u_char origin)
 {
   struct attr attr;
   struct attr *new;
-  struct attr_extra *attre;
   
   memset (&attr, 0, sizeof (struct attr));
-  attre = bgp_attr_extra_get (&attr);
+  bgp_attr_extra_get (&attr);
   
   bgp_attr_default_set(&attr, origin);
 
@@ -1516,14 +1511,9 @@ bgp_mp_reach_parse (struct peer *peer, const bgp_size_t length,
         memcpy(&attr->nexthop.s_addr, &attre->mp_nexthop_global_in, 4);
       break;
     case 12:
-      {
-	u_int32_t rd_high;
-	u_int32_t rd_low;
-
-	rd_high = stream_getl (s);
-	rd_low = stream_getl (s);
-	stream_get (&attre->mp_nexthop_global_in, s, 4);
-      }
+      stream_getl (s); /* RD high */
+      stream_getl (s); /* RD low */
+      stream_get (&attre->mp_nexthop_global_in, s, 4);
       break;
 #ifdef HAVE_IPV6
     case 16:

bgpd/bgp_route.c

@@ -1069,11 +1069,9 @@ bgp_announce_check_rsclient (struct bgp_info *ri, struct peer *rsclient,
   struct bgp_filter *filter;
   struct bgp_info info;
   struct peer *from;
-  struct bgp *bgp;
 
   from = ri->peer;
   filter = &rsclient->filter[afi][safi];
-  bgp = rsclient->bgp;
 
   if (DISABLE_BGP_ANNOUNCE)
     return 0;

bgpd/bgp_zebra.c

@@ -232,12 +232,10 @@ zebra_read_ipv4 (int command, struct zclient *zclient, zebra_size_t length)
 {
   struct stream *s;
   struct zapi_ipv4 api;
-  unsigned long ifindex;
   struct in_addr nexthop;
   struct prefix_ipv4 p;
 
   s = zclient->ibuf;
-  ifindex = 0;
   nexthop.s_addr = 0;
 
   /* Type, flags, message. */
@@ -260,7 +258,7 @@ zebra_read_ipv4 (int command, struct zclient *zclient, zebra_size_t length)
   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
     {
       api.ifindex_num = stream_getc (s);
-      ifindex = stream_getl (s);
+      stream_getl (s); /* ifindex, unused */
     }
   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
     api.distance = stream_getc (s);
@@ -310,12 +308,10 @@ zebra_read_ipv6 (int command, struct zclient *zclient, zebra_size_t length)
 {
   struct stream *s;
   struct zapi_ipv6 api;
-  unsigned long ifindex;
   struct in6_addr nexthop;
   struct prefix_ipv6 p;
 
   s = zclient->ibuf;
-  ifindex = 0;
   memset (&nexthop, 0, sizeof (struct in6_addr));
 
   /* Type, flags, message. */
@@ -338,7 +334,7 @@ zebra_read_ipv6 (int command, struct zclient *zclient, zebra_size_t length)
   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
     {
       api.ifindex_num = stream_getc (s);
-      ifindex = stream_getl (s);
+      stream_getl (s); /* ifindex, unused */
     }
   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
     api.distance = stream_getc (s);

bgpd/bgpd.c

@@ -4721,12 +4721,10 @@ static void
 bgp_config_write_peer (struct vty *vty, struct bgp *bgp,
 		       struct peer *peer, afi_t afi, safi_t safi)
 {
-  struct bgp_filter *filter;
   struct peer *g_peer = NULL;
   char buf[SU_ADDRSTRLEN];
   char *addr;
 
-  filter = &peer->filter[afi][safi];
   addr = peer->host;
   if (peer_group_active (peer))
     g_peer = peer->group->conf;

lib/distribute.c

@@ -299,7 +299,6 @@ DEFUN (distribute_list_all,
        "Filter outgoing routing updates\n")
 {
   enum distribute_type type;
-  struct distribute *dist;
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
@@ -314,7 +313,7 @@ DEFUN (distribute_list_all,
     }
 
   /* Get interface name corresponding distribute list. */
-  dist = distribute_list_set (NULL, type, argv[0]);
+  distribute_list_set (NULL, type, argv[0]);
 
   return CMD_SUCCESS;
 }
@@ -379,7 +378,6 @@ DEFUN (distribute_list,
        "Interface name\n")
 {
   enum distribute_type type;
-  struct distribute *dist;
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
@@ -393,7 +391,7 @@ DEFUN (distribute_list,
     }
 
   /* Get interface name corresponding distribute list. */
-  dist = distribute_list_set (argv[2], type, argv[0]);
+  distribute_list_set (argv[2], type, argv[0]);
 
   return CMD_SUCCESS;
 }       
@@ -458,7 +456,6 @@ DEFUN (distribute_list_prefix_all,
        "Filter outgoing routing updates\n")
 {
   enum distribute_type type;
-  struct distribute *dist;
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
@@ -473,7 +470,7 @@ DEFUN (distribute_list_prefix_all,
     }
 
   /* Get interface name corresponding distribute list. */
-  dist = distribute_list_prefix_set (NULL, type, argv[0]);
+  distribute_list_prefix_set (NULL, type, argv[0]);
 
   return CMD_SUCCESS;
 }       
@@ -541,7 +538,6 @@ DEFUN (distribute_list_prefix, distribute_list_prefix_cmd,
        "Interface name\n")
 {
   enum distribute_type type;
-  struct distribute *dist;
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
@@ -556,7 +552,7 @@ DEFUN (distribute_list_prefix, distribute_list_prefix_cmd,
     }
 
   /* Get interface name corresponding distribute list. */
-  dist = distribute_list_prefix_set (argv[2], type, argv[0]);
+  distribute_list_prefix_set (argv[2], type, argv[0]);
 
   return CMD_SUCCESS;
 }       

lib/if_rmap.c

@@ -207,7 +207,6 @@ DEFUN (if_rmap,
        "Route map interface name\n")
 {
   enum if_rmap_type type;
-  struct if_rmap *if_rmap;
 
   if (strncmp (argv[1], "i", 1) == 0)
     type = IF_RMAP_IN;
@@ -219,7 +218,7 @@ DEFUN (if_rmap,
       return CMD_WARNING;
     }
 
-  if_rmap = if_rmap_set (argv[2], type, argv[0]);
+  if_rmap_set (argv[2], type, argv[0]);
 
   return CMD_SUCCESS;
 }      

lib/vty.c

@@ -1685,7 +1685,6 @@ static int
 vty_accept (struct thread *thread)
 {
   int vty_sock;
-  struct vty *vty;
   union sockunion su;
   int ret;
   unsigned int on;
@@ -1770,7 +1769,7 @@ vty_accept (struct thread *thread)
   if (bufp)
     XFREE (MTYPE_TMP, bufp);
 
-  vty = vty_create (vty_sock, &su);
+  vty_create (vty_sock, &su);
 
   return 0;
 }

lib/zclient.c

@@ -816,7 +816,6 @@ zebra_interface_address_read (int type, struct stream *s)
 static int
 zclient_read (struct thread *thread)
 {
-  int ret;
   size_t already;
   uint16_t length, command;
   uint8_t marker, version;
@@ -911,47 +910,47 @@ zclient_read (struct thread *thread)
     {
     case ZEBRA_ROUTER_ID_UPDATE:
       if (zclient->router_id_update)
-	ret = (*zclient->router_id_update) (command, zclient, length);
+	(*zclient->router_id_update) (command, zclient, length);
       break;
     case ZEBRA_INTERFACE_ADD:
       if (zclient->interface_add)
-	ret = (*zclient->interface_add) (command, zclient, length);
+	(*zclient->interface_add) (command, zclient, length);
       break;
     case ZEBRA_INTERFACE_DELETE:
       if (zclient->interface_delete)
-	ret = (*zclient->interface_delete) (command, zclient, length);
+	(*zclient->interface_delete) (command, zclient, length);
       break;
     case ZEBRA_INTERFACE_ADDRESS_ADD:
       if (zclient->interface_address_add)
-	ret = (*zclient->interface_address_add) (command, zclient, length);
+	(*zclient->interface_address_add) (command, zclient, length);
       break;
     case ZEBRA_INTERFACE_ADDRESS_DELETE:
       if (zclient->interface_address_delete)
-	ret = (*zclient->interface_address_delete) (command, zclient, length);
+	(*zclient->interface_address_delete) (command, zclient, length);
       break;
     case ZEBRA_INTERFACE_UP:
       if (zclient->interface_up)
-	ret = (*zclient->interface_up) (command, zclient, length);
+	(*zclient->interface_up) (command, zclient, length);
       break;
     case ZEBRA_INTERFACE_DOWN:
       if (zclient->interface_down)
-	ret = (*zclient->interface_down) (command, zclient, length);
+	(*zclient->interface_down) (command, zclient, length);
       break;
     case ZEBRA_IPV4_ROUTE_ADD:
       if (zclient->ipv4_route_add)
-	ret = (*zclient->ipv4_route_add) (command, zclient, length);
+	(*zclient->ipv4_route_add) (command, zclient, length);
       break;
     case ZEBRA_IPV4_ROUTE_DELETE:
       if (zclient->ipv4_route_delete)
-	ret = (*zclient->ipv4_route_delete) (command, zclient, length);
+	(*zclient->ipv4_route_delete) (command, zclient, length);
       break;
     case ZEBRA_IPV6_ROUTE_ADD:
       if (zclient->ipv6_route_add)
-	ret = (*zclient->ipv6_route_add) (command, zclient, length);
+	(*zclient->ipv6_route_add) (command, zclient, length);
       break;
     case ZEBRA_IPV6_ROUTE_DELETE:
       if (zclient->ipv6_route_delete)
-	ret = (*zclient->ipv6_route_delete) (command, zclient, length);
+	(*zclient->ipv6_route_delete) (command, zclient, length);
       break;
     default:
       break;

zebra/irdp_interface.c

@@ -99,14 +99,11 @@ if_group (struct interface *ifp,
 	  u_int32_t group, 
 	  int add_leave)
 {
-  struct zebra_if *zi;
   struct ip_mreq m;
   struct prefix *p;
   int ret;
   char b1[INET_ADDRSTRLEN];
 
-  zi = ifp->info;
-
   memset (&m, 0, sizeof (m));
   m.imr_multiaddr.s_addr = htonl (group);
   p = irdp_get_prefix(ifp);

zebra/rt_netlink.c

@@ -1827,11 +1827,7 @@ extern struct thread_master *master;
 static int
 kernel_read (struct thread *thread)
 {
-  int ret;
-  int sock;
-
-  sock = THREAD_FD (thread);
-  ret = netlink_parse_info (netlink_information_fetch, &netlink);
+  netlink_parse_info (netlink_information_fetch, &netlink);
   thread_add_read (zebrad.master, kernel_read, NULL, netlink.sock);
 
   return 0;