From 60e685bd74bca45a4be9528d97f5a2edcc954e7f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= <bjorn@mork.no>
Date: Thu, 22 Sep 2022 11:49:42 +0200
Subject: [PATCH] make MAX_NR_INTERFACES configurable
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Signed-off-by: Bjørn Mork <bjorn@mork.no>
---
 configure.ac | 9 +++++++++
 mini-snmpd.h | 1 -
 2 files changed, 9 insertions(+), 1 deletion(-)

--- a/configure.ac
+++ b/configure.ac
@@ -40,6 +40,10 @@ AC_ARG_WITH(systemd,
      [AS_HELP_STRING([--with-systemd=DIR], [Directory for systemd service files])],,
      [with_systemd=auto])
 
+AC_ARG_WITH(interfaces,
+   AS_HELP_STRING([--with-interfaces=NUM], [Support NUM interfaces, default: 8]),
+	[with_interfaces=$withval], [with_interfaces="8"])
+
 AC_ARG_ENABLE(debug,
    AS_HELP_STRING([--enable-debug], [Enable developer debug mode, disabled by default]),
    	[enable_debug=$enableval], [enable_debug=no])
@@ -56,6 +60,7 @@ AC_ARG_ENABLE(ethtool,
    AS_HELP_STRING([--enable-ethtool], [Enable ethtool interface stats, disabled by default]),
    	[enable_ethtool=$enableval], [enable_ethtool=no])
 
+
 ### Enable features ###########################################################################
 AS_IF([test "x$with_vendor" != "xno"],[
 	AS_IF([test "x$vendor" = "xyes"],[
@@ -69,6 +74,8 @@ AS_IF([test "x$with_config" != "xno"], [
 	PKG_CHECK_MODULES([confuse], [libconfuse >= 2.7])])
 AM_CONDITIONAL([HAVE_CONFUSE], [test "x$with_config" != "xno"])
 
+AC_DEFINE_UNQUOTED(MAX_NR_INTERFACES, $with_interfaces, [Max Number of Interfaces])
+
 AS_IF([test "x$enable_debug" = "xyes"],[
    AC_DEFINE(DEBUG, 1, [Define to enable debug mode.])])
 
@@ -81,6 +88,7 @@ AS_IF([test "x$enable_ipv6" != "xno"],[
 AS_IF([test "x$enable_ethtool" != "xno"],[
    AC_DEFINE(CONFIG_ENABLE_ETHTOOL, 1, [Define to enable ethtool stats.])])
 
+
 # Check where to install the systemd .service file
 AS_IF([test "x$with_systemd" = "xyes" -o "x$with_systemd" = "xauto"], [
      def_systemd=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
@@ -129,6 +137,7 @@ cat <<EOF
   vendor OID........: $vendor
   ipv6..............: $enable_ipv6
   mini-snmpd.conf...: $with_config
+  max interfaces....: $with_interfaces
   demo mode.........: $enable_demo
   systemd...........: $with_systemd
   ethtool stats.....: $enable_ethtool
--- a/mini-snmpd.h
+++ b/mini-snmpd.h
@@ -38,7 +38,6 @@
 #define MAX_NR_OIDS                                     20
 #define MAX_NR_SUBIDS                                   20
 #define MAX_NR_DISKS                                    4
-#define MAX_NR_INTERFACES                               8
 #define MAX_NR_VALUES                                   2048
 
 #define MAX_PACKET_SIZE                                 2048