From d88c5b79db7f84c6bce15b0d7cf461d725cb8824 Mon Sep 17 00:00:00 2001
From: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Date: Mon, 11 Sep 2017 21:04:59 +0200
Subject: Backport patch: netfilter: nfnetlink: extended ACK reporting

---
 configure.ac | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index c818557..26883d7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -560,8 +560,8 @@ else
 fi
 
 AC_MSG_CHECKING([kernel source for passing extended ACK struct to parsing functions])
-if test -f $ksourcedir/include/linux/netlink.h && \
-   $AWK '/^static inline int nla_parse_nested/ {for(i=1; i<=4; i++) {getline; print}}' $ksourcedir/include/linux/netlink.h | $GREP -q 'struct netlink_ext_ack'; then
+if test -f $ksourcedir/include/net/netlink.h && \
+   $AWK '/^static inline int nla_parse_nested/ {for(i=1; i<=4; i++) {getline; print}}' $ksourcedir/include/net/netlink.h | $GREP -q 'struct netlink_ext_ack'; then
 	AC_MSG_RESULT(yes)
 	AC_SUBST(HAVE_PASSING_EXTENDED_ACK_TO_PARSERS, define)
 else
@@ -569,6 +569,16 @@ else
 	AC_SUBST(HAVE_PASSING_EXTENDED_ACK_TO_PARSERS, undef)
 fi
 
+AC_MSG_CHECKING([kernel source for passing extended ACK struct to callback functions])
+if test -f $ksourcedir/include/linux/netfilter/nfnetlink.h && \
+   $AWK '/^struct nfnl_callback / {for(i=1; i<=5; i++) {getline; print}}' $ksourcedir/include/linux/netfilter/nfnetlink.h | $GREP -q 'struct netlink_ext_ack'; then
+	AC_MSG_RESULT(yes)
+	AC_SUBST(HAVE_PASSING_EXTENDED_ACK_TO_CALLBACKS, define)
+else
+	AC_MSG_RESULT(no)
+	AC_SUBST(HAVE_PASSING_EXTENDED_ACK_TO_CALLBACKS, undef)
+fi
+
 AC_MSG_CHECKING([kernel source for struct net_generic])
 if test -f $ksourcedir/include/net/netns/generic.h && \
    $GREP -q 'struct net_generic' $ksourcedir/include/net/netns/generic.h; then
-- 
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