From 5431126ac94bf81743852493a041e80e82918741 Mon Sep 17 00:00:00 2001
From: Baruch Siach <baruch@tkos.co.il>
Date: Fri, 8 Jun 2018 06:05:26 +0300
Subject: [PATCH] configure: fix build with kernel headers v4.17+

Kernel v4.17 removed the linux/irda.h header. Skip the irda test when
this header is missing.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
---
Upstream status: https://github.com/kernelslacker/trinity/pull/25

 configure        | 1 +
 net/proto-irda.c | 6 +++++-
 net/protocols.c  | 2 ++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index c0166af33048..944c8cf77d1b 100755
--- a/configure
+++ b/configure
@@ -316,6 +316,7 @@ fi
 check_header linux/caif/caif_socket.h USE_CAIF
 check_header linux/fsmap.h USE_FSMAP
 check_header linux/if_alg.h USE_IF_ALG
+check_header linux/irda.h USE_IRDA
 check_header linux/rds.h USE_RDS
 check_header linux/vfio.h USE_VFIO
 check_header drm/drm.h USE_DRM
diff --git a/net/proto-irda.c b/net/proto-irda.c
index 02d51bcd2ee0..264e36dfa040 100644
--- a/net/proto-irda.c
+++ b/net/proto-irda.c
@@ -4,13 +4,15 @@
 #include <sys/un.h>
 /* old irda.h does not include something which defines sa_family_t */
 #include <netinet/in.h>
-#include <linux/irda.h>
 #include <stdlib.h>
 #include "net.h"
 #include "random.h"
 #include "utils.h"	// RAND_ARRAY
 #include "compat.h"
 
+#ifdef USE_IRDA
+#include <linux/irda.h>
+
 static void irda_gen_sockaddr(struct sockaddr **addr, socklen_t *addrlen)
 {
 	struct sockaddr_irda *irda;
@@ -53,3 +55,5 @@ const struct netproto proto_irda = {
 	.valid_triplets = irda_triplets,
 	.nr_triplets = ARRAY_SIZE(irda_triplets),
 };
+
+#endif
diff --git a/net/protocols.c b/net/protocols.c
index 90a60affedca..87acf85c707f 100644
--- a/net/protocols.c
+++ b/net/protocols.c
@@ -26,7 +26,9 @@ const struct protoptr net_protocols[TRINITY_PF_MAX] = {
 #ifdef USE_RDS
 	[PF_RDS] = { .proto = &proto_rds },
 #endif
+#ifdef USE_IRDA
 	[PF_IRDA] = { .proto = &proto_irda },
+#endif
 	[PF_LLC] = { .proto = &proto_llc },
 	[PF_CAN] = { .proto = &proto_can },
 	[PF_TIPC] = { .proto = &proto_tipc },
-- 
2.17.1