Fix a bug that prevented tcpflow picking up traffic when

listening on the loopback interface.
Bump PORTREVISION.

PR:		ports/89672
Submitted by:	Oles Hnatkevych <don_oles@able.com.ua>
Approved by:	jose@we.lc.ehu.es (maintainer, timeout 14 days)

net/tcpflow/Makefile

@@ -7,6 +7,7 @@
 
 PORTNAME=	tcpflow
 PORTVERSION=	0.21
+PORTREVISION=	1
 CATEGORIES=	net
 MASTER_SITES=	ftp://ftp.circlemud.org/pub/jelson/tcpflow/
 

net/tcpflow/files/patch-datalink.c

@@ -0,0 +1,26 @@
+--- src/datalink.c.orig     Mon May  9 12:00:38 2005
++++ src/datalink.c  Mon May  9 12:23:47 2005
+@@ -42,6 +42,13 @@
+
+ #include "tcpflow.h"
+
++/*
++ * Byte-swap a 32-bit number.
++ * ("htonl()" or "ntohl()" won't work - we want to byte-swap even on
++ * big-endian platforms.)
++ */
++#define SWAPLONG(y) \
++((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff))
+
+
+ /* The DLT_NULL packet header is 4 bytes long. It contains a network
+@@ -71,7 +78,8 @@
+ #ifndef DLT_NULL_BROKEN
+   /* make sure this is AF_INET */
+   memcpy((char *)&family, (char *)p, sizeof(family));
+-  family = ntohl(family);
++  // family = ntohl(family);
++  if ((family & 0xFFFF0000) != 0) family = SWAPLONG(family);
+   if (family != AF_INET) {
+     DEBUG(6) ("warning: received non-AF_INET null frame (type %d)", family);
+     return;