From 89bcb4b22f0eb8f4eef87cd66d6f3507e7ef832a Mon Sep 17 00:00:00 2001
From: Sven Eckelmann <sven@narfation.org>
Date: Thu, 1 Aug 2019 16:39:32 +0200
Subject: [PATCH] batman-adv: Drop compat-hacks for unsupported kernel versions

OpenWrt only supports kernel 4.9, 4.14 and 4.19. Older kernel versions than
4.9 therefore don't require support.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
 batman-adv/Makefile           |  2 +-
 batman-adv/src/compat-hacks.h | 92 ++---------------------------------
 2 files changed, 5 insertions(+), 89 deletions(-)

diff --git a/batman-adv/Makefile b/batman-adv/Makefile
index a7c6a79..e689d72 100644
--- a/batman-adv/Makefile
+++ b/batman-adv/Makefile
@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=batman-adv
 
 PKG_VERSION:=2019.2
-PKG_RELEASE:=4
+PKG_RELEASE:=5
 PKG_HASH:=70c3f6a6cf88d2b25681a76768a52ed92d9fe992ba8e358368b6a8088757adc8
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
diff --git a/batman-adv/src/compat-hacks.h b/batman-adv/src/compat-hacks.h
index d8de483..9dd4597 100644
--- a/batman-adv/src/compat-hacks.h
+++ b/batman-adv/src/compat-hacks.h
@@ -5,24 +5,7 @@
 #include <linux/version.h>	/* LINUX_VERSION_CODE */
 #include <linux/types.h>
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0)
-
-#define dev_get_iflink(_net_dev) ((_net_dev)->iflink)
-
-#endif /* < KERNEL_VERSION(4, 1, 0) */
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
-
-#include <linux/netdevice.h>
-
-#define netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info, extack) ({\
-	BUILD_BUG_ON(upper_priv != NULL); \
-	BUILD_BUG_ON(upper_info != NULL); \
-	BUILD_BUG_ON(extack != NULL); \
-	netdev_master_upper_dev_link(dev, upper_dev); \
-})
-
-#elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
 
 #include <linux/netdevice.h>
 
@@ -31,27 +14,10 @@
 	netdev_master_upper_dev_link(dev, upper_dev, upper_priv, upper_info); \
 })
 
-#endif /* < KERNEL_VERSION(4, 5, 0) */
-
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 0, 0)
-
-/* wild hack for batadv_getlink_net only */
-#define get_link_net get_xstats_size || 1 ? fallback_net : (struct net*)netdev->rtnl_link_ops->get_xstats_size
-
-#endif /* < KERNEL_VERSION(4, 0, 0) */
-
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0)
-
-struct sk_buff *skb_checksum_trimmed(struct sk_buff *skb,
-				     unsigned int transport_len,
-				     __sum16(*skb_chkf)(struct sk_buff *skb));
+#endif /* < KERNEL_VERSION(4, 15, 0) */
 
-int ip_mc_check_igmp(struct sk_buff *skb);
-int ipv6_mc_check_mld(struct sk_buff *skb);
 
-#elif LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0)
 
 #include_next <linux/igmp.h>
 #include_next <net/addrconf.h>
@@ -86,57 +52,7 @@ static inline int batadv_ip_mc_check_igmp2(struct sk_buff *skb,
 #define ip_mc_check_igmp(...) \
 	ip_mc_check_igmp_get(__VA_ARGS__, batadv_ip_mc_check_igmp2, batadv_ip_mc_check_igmp1)(__VA_ARGS__)
 
-#endif /* < KERNEL_VERSION(4, 2, 0) */
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
-
-#define IFF_NO_QUEUE	0; dev->tx_queue_len = 0
-
-static inline bool hlist_fake(struct hlist_node *h)
-{
-	return h->pprev == &h->next;
-}
-
-#endif /* < KERNEL_VERSION(4, 3, 0) */
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0)
-
-#include <linux/ethtool.h>
-
-#define ethtool_link_ksettings batadv_ethtool_link_ksettings
-
-struct batadv_ethtool_link_ksettings {
-	struct {
-		__u32	speed;
-		__u8	duplex;
-		__u8    autoneg;
-	} base;
-};
-
-#define __ethtool_get_link_ksettings(__dev, __link_settings) \
-	batadv_ethtool_get_link_ksettings(__dev, __link_settings)
-
-static inline int
-batadv_ethtool_get_link_ksettings(struct net_device *dev,
-				  struct ethtool_link_ksettings *link_ksettings)
-{
-	struct ethtool_cmd cmd;
-	int ret;
-
-	memset(&cmd, 0, sizeof(cmd));
-	ret = __ethtool_get_settings(dev, &cmd);
-
-	if (ret != 0)
-		return ret;
-
-	link_ksettings->base.duplex = cmd.duplex;
-	link_ksettings->base.speed = ethtool_cmd_speed(&cmd);
-	link_ksettings->base.autoneg = cmd.autoneg;
-
-	return 0;
-}
-
-#endif /* < KERNEL_VERSION(4, 6, 0) */
+#endif /* < KERNEL_VERSION(5, 1, 0) */
 
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
-- 
2.30.2