12 files changed, 5 insertions, 478 deletions

diff --git a/net/quagga/Makefile b/net/quagga/Makefile
index afd9764b8416..fb516807917a 100644
--- a/net/quagga/Makefile
+++ b/net/quagga/Makefile
@@ -6,8 +6,7 @@
 #
 
 PORTNAME=	quagga
-PORTVERSION=	0.99.11
-PORTREVISION=	3
+PORTVERSION=	0.99.12
 CATEGORIES=	net ipv6
 MASTER_SITES=	http://quagga.net/download/ \
 		http://www.ru.quagga.net/download/ \
@@ -44,8 +43,7 @@ OPTIONS=	ISISD		"Enable experimental ISIS daemon"	off \
 .include <bsd.port.pre.mk>
 
 CONFIGURE_ARGS+=--includedir=${PREFIX}/include --enable-exampledir=${PREFIX}/share/examples/quagga --enable-pidfile-mask=0644
-CONFIGURE_ENV+=	CFLAGS="${CFLAGS} -I${LOCALBASE}/include" \
-		LDFLAGS="${LDFLAGS} -L${LOCALBASE}/lib" \
+CONFIGURE_ENV+=	LDFLAGS="${LDFLAGS} -L${LOCALBASE}/lib" \
 		LIBTOOL=${LIBTOOL} LIBTOOLIZE=${LIBTOOLIZE} \
 		LIBTOOL_VERSION=${LIBTOOL_VERSION}
 
diff --git a/net/quagga/distinfo b/net/quagga/distinfo
index 9bfda733f498..bb60cc1a7dfb 100644
--- a/net/quagga/distinfo
+++ b/net/quagga/distinfo
@@ -1,3 +1,3 @@
-MD5 (quagga-0.99.11.tar.gz) = 903e40c744730ad4d62bee872eeb813b
-SHA256 (quagga-0.99.11.tar.gz) = a83a357d6de23d7062360ca931371d2d65c0e1a2ba11c57c7a35c6e36b47a646
-SIZE (quagga-0.99.11.tar.gz) = 2192249
+MD5 (quagga-0.99.12.tar.gz) = d2bb513f4ac113dbb300c15a0bd0a241
+SHA256 (quagga-0.99.12.tar.gz) = 2d4897a56774fe78da58e3951e8e365175fcde366036f0071f75c391720997e1
+SIZE (quagga-0.99.12.tar.gz) = 2162403
diff --git a/net/quagga/files/patch-bgp_aspath.c b/net/quagga/files/patch-bgp_aspath.c
deleted file mode 100644
index dcee86a45f7c..000000000000
--- a/net/quagga/files/patch-bgp_aspath.c
+++ /dev/null
@@ -1,127 +0,0 @@
---- bgpd/bgp_aspath.c.orig	2008-09-05 22:27:26.000000000 +0800
-+++ bgpd/bgp_aspath.c	2009-04-30 16:33:56.000000000 +0800
-@@ -393,25 +393,6 @@
-   return ' ';
- }
- 
--/* countup asns from this segment and index onward */
--static int
--assegment_count_asns (struct assegment *seg, int from)
--{
--  int count = 0;
--  while (seg)
--    {
--      if (!from)
--        count += seg->length;
--      else
--        {
--          count += (seg->length - from);
--          from = 0;
--        }
--      seg = seg->next;
--    }
--  return count;
--}
--
- unsigned int
- aspath_count_confeds (struct aspath *aspath)
- {
-@@ -521,6 +502,21 @@
-   return num;
- }
- 
-+static void
-+aspath_make_str_big_enough (int len,
-+			    char **str_buf,
-+			    int *str_size,
-+			    int count_to_be_added)
-+{
-+#define TERMINATOR 1
-+  while (len + count_to_be_added + TERMINATOR > *str_size)
-+    {
-+      *str_size *= 2;
-+      *str_buf = XREALLOC (MTYPE_AS_STR, *str_buf, *str_size);
-+    }
-+#undef TERMINATOR
-+}
-+
- /* Convert aspath structure to string expression. */
- static char *
- aspath_make_str_count (struct aspath *as)
-@@ -540,18 +536,7 @@
-   
-   seg = as->segments;
-   
--  /* ASN takes 5 chars at least, plus seperator, see below.
--   * If there is one differing segment type, we need an additional
--   * 2 chars for segment delimiters, and the final '\0'.
--   * Hopefully this is large enough to avoid hitting the realloc
--   * code below for most common sequences.
--   *
--   * With 32bit ASNs, this range will increase, but only worth changing
--   * once there are significant numbers of ASN >= 100000
--   */
--#define ASN_STR_LEN (5 + 1)
--  str_size = MAX (assegment_count_asns (seg, 0) * ASN_STR_LEN + 2 + 1,
--                  ASPATH_STR_DEFAULT_LEN);
-+  str_size = ASPATH_STR_DEFAULT_LEN;
-   str_buf = XMALLOC (MTYPE_AS_STR, str_size);
- 
-   while (seg)
-@@ -575,32 +560,24 @@
-             return NULL;
-         }
-       
--      /* We might need to increase str_buf, particularly if path has
--       * differing segments types, our initial guesstimate above will
--       * have been wrong.  need 5 chars for ASN, a seperator each and
--       * potentially two segment delimiters, plus a space between each
--       * segment and trailing zero.
--       *
--       * This may need to revised if/when significant numbers of
--       * ASNs >= 100000 are assigned and in-use on the internet...
--       */
--#define SEGMENT_STR_LEN(X) (((X)->length * ASN_STR_LEN) + 2 + 1 + 1)
--      if ( (len + SEGMENT_STR_LEN(seg)) > str_size)
--        {
--          str_size = len + SEGMENT_STR_LEN(seg);
--          str_buf = XREALLOC (MTYPE_AS_STR, str_buf, str_size);
--        }
--#undef ASN_STR_LEN
--#undef SEGMENT_STR_LEN
--      
-       if (seg->type != AS_SEQUENCE)
--        len += snprintf (str_buf + len, str_size - len, 
--			 "%c", 
--                         aspath_delimiter_char (seg->type, AS_SEG_START));
-+	{
-+	  aspath_make_str_big_enough (len, &str_buf, &str_size, 1); /* %c */
-+	  len += snprintf (str_buf + len, str_size - len, 
-+			   "%c", 
-+			   aspath_delimiter_char (seg->type, AS_SEG_START));
-+	}
-       
-       /* write out the ASNs, with their seperators, bar the last one*/
-       for (i = 0; i < seg->length; i++)
-         {
-+#define APPROX_DIG_CNT(x) (x < 100000U ? 5 : 10)
-+	  /* %u + %c + %c + " " (last two are below loop) */
-+	  aspath_make_str_big_enough (len,
-+				      &str_buf,
-+				      &str_size,
-+				      APPROX_DIG_CNT(seg->as[i]) + 1 + 1 + 1);
-+
-           len += snprintf (str_buf + len, str_size - len, "%u", seg->as[i]);
-           
-           if (i < (seg->length - 1))
-@@ -1771,8 +1748,8 @@
- static int
- aspath_cmp (const void *arg1, const void *arg2)
- {
--  const struct assegment *seg1 = ((struct aspath *)arg1)->segments;
--  const struct assegment *seg2 = ((struct aspath *)arg2)->segments;
-+  const struct assegment *seg1 = ((const struct aspath *)arg1)->segments;
-+  const struct assegment *seg2 = ((const struct aspath *)arg2)->segments;
-   
-   while (seg1 || seg2)
-     {
diff --git a/net/quagga/files/patch-bgp_attr.c b/net/quagga/files/patch-bgp_attr.c
deleted file mode 100644
index 49c4af383fa4..000000000000
--- a/net/quagga/files/patch-bgp_attr.c
+++ /dev/null
@@ -1,11 +0,0 @@
---- bgpd/bgp_attr.c.orig	2008-10-02 16:28:50.000000000 +0800
-+++ bgpd/bgp_attr.c	2009-04-30 16:33:56.000000000 +0800
-@@ -857,7 +857,7 @@
- 	  && ! aspath_firstas_check (attr->aspath, peer->as))
-  	{
-  	  zlog (peer->log, LOG_ERR,
-- 		"%s incorrect first AS (must be %d)", peer->host, peer->as);
-+ 		"%s incorrect first AS (must be %u)", peer->host, peer->as);
-  	  bgp_notify_send (peer,
-  			   BGP_NOTIFY_UPDATE_ERR,
-  			   BGP_NOTIFY_UPDATE_MAL_AS_PATH);
diff --git a/net/quagga/files/patch-bgp_community.c b/net/quagga/files/patch-bgp_community.c
deleted file mode 100644
index 76c98acb1a78..000000000000
--- a/net/quagga/files/patch-bgp_community.c
+++ /dev/null
@@ -1,11 +0,0 @@
---- bgpd/bgp_community.c.orig	2008-09-05 22:27:26.000000000 +0800
-+++ bgpd/bgp_community.c	2009-04-30 16:33:56.000000000 +0800
-@@ -282,7 +282,7 @@
- 	default:
- 	  as = (comval >> 16) & 0xFFFF;
- 	  val = comval & 0xFFFF;
--	  sprintf (pnt, "%d:%d", as, val);
-+	  sprintf (pnt, "%u:%d", as, val);
- 	  pnt += strlen (pnt);
- 	  break;
- 	}
diff --git a/net/quagga/files/patch-bgp_debug.c b/net/quagga/files/patch-bgp_debug.c
deleted file mode 100644
index 69f17331f1fb..000000000000
--- a/net/quagga/files/patch-bgp_debug.c
+++ /dev/null
@@ -1,10 +0,0 @@
---- bgpd/bgp_debug.c.orig	2008-09-05 22:27:26.000000000 +0800
-+++ bgpd/bgp_debug.c	2009-04-30 16:33:56.000000000 +0800
-@@ -205,7 +205,7 @@
-     snprintf (buf + strlen (buf), size - strlen (buf), ", atomic-aggregate");
- 
-   if (CHECK_FLAG (attr->flag, ATTR_FLAG_BIT (BGP_ATTR_AGGREGATOR)))
--    snprintf (buf + strlen (buf), size - strlen (buf), ", aggregated by %d %s",
-+    snprintf (buf + strlen (buf), size - strlen (buf), ", aggregated by %u %s",
- 	      attr->extra->aggregator_as,
- 	      inet_ntoa (attr->extra->aggregator_addr));
diff --git a/net/quagga/files/patch-bgp_ecommunity.c b/net/quagga/files/patch-bgp_ecommunity.c
deleted file mode 100644
index 624ee221a29a..000000000000
--- a/net/quagga/files/patch-bgp_ecommunity.c
+++ /dev/null
@@ -1,20 +0,0 @@
---- bgpd/bgp_ecommunity.c.orig	2008-09-05 22:27:26.000000000 +0800
-+++ bgpd/bgp_ecommunity.c	2009-04-30 16:33:56.000000000 +0800
-@@ -673,7 +673,7 @@
- 	  eas.val = (*pnt++ << 8);
- 	  eas.val |= (*pnt++);
- 
--	  len = sprintf( str_buf + str_pnt, "%s%d:%d", prefix,
-+	  len = sprintf( str_buf + str_pnt, "%s%u:%d", prefix,
-                         eas.as, eas.val );
- 	  str_pnt += len;
- 	  first = 0;
-@@ -688,7 +688,7 @@
- 	  eas.val |= (*pnt++ << 8);
- 	  eas.val |= (*pnt++);
- 
--	  len = sprintf (str_buf + str_pnt, "%s%d:%d", prefix,
-+	  len = sprintf (str_buf + str_pnt, "%s%u:%d", prefix,
- 			 eas.as, eas.val);
- 	  str_pnt += len;
- 	  first = 0;
diff --git a/net/quagga/files/patch-bgp_packet.c b/net/quagga/files/patch-bgp_packet.c
deleted file mode 100644
index 7b6cde9ee421..000000000000
--- a/net/quagga/files/patch-bgp_packet.c
+++ /dev/null
@@ -1,38 +0,0 @@
---- bgpd/bgp_packet.c.orig	2008-09-10 04:18:57.000000000 +0800
-+++ bgpd/bgp_packet.c	2009-04-30 16:33:56.000000000 +0800
-@@ -813,7 +813,7 @@
-   length = bgp_packet_set_size (s);
- 
-   if (BGP_DEBUG (normal, NORMAL))
--    zlog_debug ("%s sending OPEN, version %d, my as %d, holdtime %d, id %s", 
-+    zlog_debug ("%s sending OPEN, version %d, my as %u, holdtime %d, id %s", 
- 	       peer->host, BGP_VERSION_4, local_as,
- 	       send_holdtime, inet_ntoa (peer->local_id));
- 
-@@ -1184,7 +1184,7 @@
- 
-   /* Receive OPEN message log  */
-   if (BGP_DEBUG (normal, NORMAL))
--    zlog_debug ("%s rcv OPEN, version %d, remote-as (in open) %d,"
-+    zlog_debug ("%s rcv OPEN, version %d, remote-as (in open) %u,"
-                 " holdtime %d, id %s",
- 	        peer->host, version, remote_as, holdtime,
- 	        inet_ntoa (remote_id));
-@@ -1277,7 +1277,7 @@
- 	  else
- 	    {
- 	      if (BGP_DEBUG (normal, NORMAL))
--		zlog_debug ("%s bad OPEN, remote AS is %d, expected %d",
-+		zlog_debug ("%s bad OPEN, remote AS is %u, expected %u",
- 			    peer->host, remote_as, peer->as);
- 	      bgp_notify_send_with_data (peer, BGP_NOTIFY_OPEN_ERR,
- 					 BGP_NOTIFY_OPEN_BAD_PEER_AS,
-@@ -1430,7 +1430,7 @@
-   if (remote_as != peer->as)
-     {
-       if (BGP_DEBUG (normal, NORMAL))
--	zlog_debug ("%s bad OPEN, remote AS is %d, expected %d",
-+	zlog_debug ("%s bad OPEN, remote AS is %u, expected %u",
- 		   peer->host, remote_as, peer->as);
-       bgp_notify_send_with_data (peer, 
- 				 BGP_NOTIFY_OPEN_ERR, 
diff --git a/net/quagga/files/patch-bgp_route.c b/net/quagga/files/patch-bgp_route.c
deleted file mode 100644
index 28a8f6ae5bdb..000000000000
--- a/net/quagga/files/patch-bgp_route.c
+++ /dev/null
@@ -1,38 +0,0 @@
---- bgpd/bgp_route.c.orig	2008-10-02 16:28:50.000000000 +0800
-+++ bgpd/bgp_route.c	2009-04-30 16:33:56.000000000 +0800
-@@ -834,7 +834,7 @@
-     {
-       if (BGP_DEBUG (filter, FILTER))  
-         zlog (peer->log, LOG_DEBUG, 
--	      "%s [Update:SEND] suppress announcement to peer AS %d is AS path.",
-+	      "%s [Update:SEND] suppress announcement to peer AS %u is AS path.",
- 	      peer->host, peer->as);
-       return 0;
-     }
-@@ -847,7 +847,7 @@
- 	{
- 	  if (BGP_DEBUG (filter, FILTER))  
- 	    zlog (peer->log, LOG_DEBUG, 
--		  "%s [Update:SEND] suppress announcement to peer AS %d is AS path.",
-+		  "%s [Update:SEND] suppress announcement to peer AS %u is AS path.",
- 		  peer->host,
- 		  bgp->confed_id);
- 	  return 0;
-@@ -1163,7 +1163,7 @@
-     {
-       if (BGP_DEBUG (filter, FILTER))
-         zlog (rsclient->log, LOG_DEBUG,
--             "%s [Update:SEND] suppress announcement to peer AS %d is AS path.",
-+             "%s [Update:SEND] suppress announcement to peer AS %u is AS path.",
-              rsclient->host, rsclient->as);
-       return 0;
-     }
-@@ -5956,7 +5956,7 @@
-       if (CHECK_FLAG (binfo->flags, BGP_INFO_STALE))
- 	vty_out (vty, ", (stale)");
-       if (CHECK_FLAG (attr->flag, ATTR_FLAG_BIT (BGP_ATTR_AGGREGATOR)))
--	vty_out (vty, ", (aggregated by %d %s)", 
-+	vty_out (vty, ", (aggregated by %u %s)", 
- 	         attr->extra->aggregator_as,
- 		 inet_ntoa (attr->extra->aggregator_addr));
-       if (CHECK_FLAG (binfo->peer->af_flags[afi][safi], PEER_FLAG_REFLECTOR_CLIENT))
diff --git a/net/quagga/files/patch-bgp_vty.c b/net/quagga/files/patch-bgp_vty.c
deleted file mode 100644
index 713b94db6a12..000000000000
--- a/net/quagga/files/patch-bgp_vty.c
+++ /dev/null
@@ -1,76 +0,0 @@
---- bgpd/bgp_vty.c.orig	2008-09-11 13:46:49.000000000 +0800
-+++ bgpd/bgp_vty.c	2009-04-30 16:33:56.000000000 +0800
-@@ -334,11 +334,11 @@
- 	       VTY_NEWLINE);
-       return CMD_WARNING;
-     case BGP_ERR_AS_MISMATCH:
--      vty_out (vty, "BGP is already running; AS is %d%s", as, VTY_NEWLINE);
-+      vty_out (vty, "BGP is already running; AS is %u%s", as, VTY_NEWLINE);
-       return CMD_WARNING;
-     case BGP_ERR_INSTANCE_MISMATCH:
-       vty_out (vty, "BGP view name and AS number mismatch%s", VTY_NEWLINE);
--      vty_out (vty, "BGP instance is already running; AS is %d%s",
-+      vty_out (vty, "BGP instance is already running; AS is %u%s",
- 	       as, VTY_NEWLINE);
-       return CMD_WARNING;
-     }
-@@ -1280,10 +1280,10 @@
-   switch (ret)
-     {
-     case BGP_ERR_PEER_GROUP_MEMBER:
--      vty_out (vty, "%% Peer-group AS %d. Cannot configure remote-as for member%s", as, VTY_NEWLINE);
-+      vty_out (vty, "%% Peer-group AS %u. Cannot configure remote-as for member%s", as, VTY_NEWLINE);
-       return CMD_WARNING;
-     case BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT:
--      vty_out (vty, "%% The AS# can not be changed from %d to %s, peer-group members must be all internal or all external%s", as, as_str, VTY_NEWLINE);
-+      vty_out (vty, "%% The AS# can not be changed from %u to %s, peer-group members must be all internal or all external%s", as, as_str, VTY_NEWLINE);
-       return CMD_WARNING;
-     }
-   return bgp_vty_return (vty, ret);
-@@ -1601,7 +1601,7 @@
- 
-   if (ret == BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT)
-     {
--      vty_out (vty, "%% Peer with AS %d cannot be in this peer-group, members must be all internal or all external%s", as, VTY_NEWLINE);
-+      vty_out (vty, "%% Peer with AS %u cannot be in this peer-group, members must be all internal or all external%s", as, VTY_NEWLINE);
-       return CMD_WARNING;
-     }
- 
-@@ -6669,7 +6669,7 @@
-               
-               /* Usage summary and header */
-               vty_out (vty,
--                       "BGP router identifier %s, local AS number %d%s",
-+                       "BGP router identifier %s, local AS number %u%s",
-                        inet_ntoa (bgp->router_id), bgp->as, VTY_NEWLINE);
- 
-               ents = bgp_table_count (bgp->rib[afi][safi]);
-@@ -6716,7 +6716,7 @@
- 
- 	  vty_out (vty, "4 ");
- 
--	  vty_out (vty, "%5d %7d %7d %8d %4d %4lu ",
-+	  vty_out (vty, "%5u %7d %7d %8d %4d %4lu ",
- 		   peer->as,
- 		   peer->open_in + peer->update_in + peer->keepalive_in
- 		   + peer->notify_in + peer->refresh_in + peer->dynamic_cap_in,
-@@ -7226,8 +7226,8 @@
- 
-   /* Configured IP address. */
-   vty_out (vty, "BGP neighbor is %s, ", p->host);
--  vty_out (vty, "remote AS %d, ", p->as);
--  vty_out (vty, "local AS %d%s, ",
-+  vty_out (vty, "remote AS %u, ", p->as);
-+  vty_out (vty, "local AS %u%s, ",
- 	   p->change_local_as ? p->change_local_as : p->local_as,
- 	   CHECK_FLAG (p->flags, PEER_FLAG_LOCAL_AS_NO_PREPEND) ?
- 	   " no-prepend" : "");
-@@ -8009,7 +8009,7 @@
-                       "Route Server's BGP router identifier %s%s",
-                       inet_ntoa (bgp->router_id), VTY_NEWLINE);
-              vty_out (vty,
--              "Route Server's local AS number %d%s", bgp->as,
-+              "Route Server's local AS number %u%s", bgp->as,
-                        VTY_NEWLINE);
- 
-              vty_out (vty, "%s", VTY_NEWLINE);
diff --git a/net/quagga/files/patch-bgpd.c b/net/quagga/files/patch-bgpd.c
deleted file mode 100644
index f64b62d35a69..000000000000
--- a/net/quagga/files/patch-bgpd.c
+++ /dev/null
@@ -1,45 +0,0 @@
---- bgpd/bgpd.c.orig	2008-09-11 13:46:49.000000000 +0800
-+++ bgpd/bgpd.c	2009-04-30 16:33:56.000000000 +0800
-@@ -4512,13 +4512,13 @@
- 	    vty_out (vty, " neighbor %s peer-group%s", addr,
- 		     VTY_NEWLINE);
- 	  if (peer->as)
--	    vty_out (vty, " neighbor %s remote-as %d%s", addr, peer->as,
-+	    vty_out (vty, " neighbor %s remote-as %u%s", addr, peer->as,
- 		     VTY_NEWLINE);
- 	}
-       else
- 	{
- 	  if (! g_peer->as)
--	    vty_out (vty, " neighbor %s remote-as %d%s", addr, peer->as,
-+	    vty_out (vty, " neighbor %s remote-as %u%s", addr, peer->as,
- 		     VTY_NEWLINE);
- 	  if (peer->af_group[AFI_IP][SAFI_UNICAST])
- 	    vty_out (vty, " neighbor %s peer-group %s%s", addr,
-@@ -4528,7 +4528,7 @@
-       /* local-as. */
-       if (peer->change_local_as)
- 	if (! peer_group_active (peer))
--	  vty_out (vty, " neighbor %s local-as %d%s%s", addr,
-+	  vty_out (vty, " neighbor %s local-as %u%s%s", addr,
- 		   peer->change_local_as,
- 		   CHECK_FLAG (peer->flags, PEER_FLAG_LOCAL_AS_NO_PREPEND) ?
- 		   " no-prepend" : "", VTY_NEWLINE);
-@@ -4917,7 +4917,7 @@
- 	vty_out (vty, "!%s", VTY_NEWLINE);
- 
-       /* Router bgp ASN */
--      vty_out (vty, "router bgp %d", bgp->as);
-+      vty_out (vty, "router bgp %u", bgp->as);
- 
-       if (bgp_option_check (BGP_OPT_MULTIPLE_INSTANCE))
- 	{
-@@ -4978,7 +4978,7 @@
- 	  vty_out (vty, " bgp confederation peers");
- 
-          for (i = 0; i < bgp->confed_peers_cnt; i++)
--           vty_out(vty, " %d", bgp->confed_peers[i]);
-+           vty_out(vty, " %u", bgp->confed_peers[i]);
- 
-           vty_out (vty, "%s", VTY_NEWLINE);
- 	}
diff --git a/net/quagga/files/patch-git-1-fletcher_checkusm b/net/quagga/files/patch-git-1-fletcher_checkusm
deleted file mode 100644
index 89e57992b383..000000000000
--- a/net/quagga/files/patch-git-1-fletcher_checkusm
+++ /dev/null
@@ -1,95 +0,0 @@
-diff --git lib/checksum.c lib/checksum.c
-index 88ec72a..f6d74d3 100644
---- lib/checksum.c
-+++ lib/checksum.c
-@@ -52,34 +52,31 @@ in_cksum(void *parg, int nbytes)
- /* To be consistent, offset is 0-based index, rather than the 1-based 
-    index required in the specification ISO 8473, Annex C.1 */
- u_int16_t
--fletcher_checksum(u_char * buffer, int len, u_int16_t offset)
-+fletcher_checksum(u_char * buffer, const size_t len, const uint16_t offset)
- {
-   u_int8_t *p;
--  int x;
--  int y;
--  u_int32_t mul;
--  u_int32_t c0;
--  u_int32_t c1;
-+  int x, y, c0, c1;
-   u_int16_t checksum;
-   u_int16_t *csum;
--  int i, init_len, partial_len;
--
-+  size_t partial_len, i, left = len;
-+  
-   checksum = 0;
- 
-+  assert (offset < len);
-+
-   /*
-    * Zero the csum in the packet.
-    */
-   csum = (u_int16_t *) (buffer + offset);
--  *(csum) = checksum;
-+  *(csum) = 0;
- 
-   p = buffer;
-   c0 = 0;
-   c1 = 0;
--  init_len = len;
- 
--  while (len != 0)
-+  while (left != 0)
-     {
--      partial_len = MIN(len, MODX);
-+      partial_len = MIN(left, MODX);
- 
-       for (i = 0; i < partial_len; i++)
- 	{
-@@ -90,27 +87,18 @@ fletcher_checksum(u_char * buffer, int len, u_int16_t offset)
-       c0 = c0 % 255;
-       c1 = c1 % 255;
- 
--      len -= partial_len;
-+      left -= partial_len;
-     }
--
--  mul = (init_len - offset)*(c0);
--
--  x = mul - c0 - c1;
--  y = c1 - mul - 1;
--
--  if (y > 0)
--    y++;
--  if (x < 0)
--    x--;
--
--  x %= 255;
--  y %= 255;
--
--  if (x == 0)
--    x = 255;
--  if (y == 0)
--    y = 1;
--
-+  
-+  /* The cast is important, to ensure the mod is taken as a signed value. */
-+  x = (int)((len - offset - 1) * c0 - c1) % 255;
-+
-+  if (x <= 0)
-+    x += 255;
-+  y = 510 - c0 - x;
-+  if (y > 255)  
-+    y -= 255;
-+  
-   /*
-    * Now we write this to the packet.
-    * We could skip this step too, since the checksum returned would
-diff --git a/lib/checksum.h b/lib/checksum.h
-index d3ce930..da1d3cb 100644
---- lib/checksum.h
-+++ lib/checksum.h
-@@ -1,2 +1,2 @@
- extern int in_cksum(void *, int);
--extern u_int16_t fletcher_checksum(u_char * buffer, int len, u_int16_t offset);
-+extern u_int16_t fletcher_checksum(u_char *, const size_t len, const uint16_t offset);