netfilter: fix hardware offload regression (FS#1551)

The relevant code needs to be enabled even if flow table support is only
compiled as module

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/linux/generic/pending-4.14/642-net-8021q-support-hardware-flow-table-offload.patch

@@ -13,7 +13,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  #include <linux/phy.h>
  #include <net/arp.h>
  #include <net/switchdev.h>
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +#include <linux/netfilter.h>
 +#include <net/netfilter/nf_flow_table.h>
 +#endif
@@ -24,7 +24,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	return real_dev->ifindex;
  }
  
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +static int vlan_dev_flow_offload_check(struct flow_offload_hw_path *path)
 +{
 +	struct net_device *dev = path->dev;
@@ -52,7 +52,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	.ndo_fix_features	= vlan_dev_fix_features,
  	.ndo_get_lock_subclass  = vlan_dev_get_lock_subclass,
  	.ndo_get_iflink		= vlan_dev_get_iflink,
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +	.ndo_flow_offload_check = vlan_dev_flow_offload_check,
 +#endif
  };

target/linux/generic/pending-4.14/643-net-bridge-support-hardware-flow-table-offload.patch

@@ -13,7 +13,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  #include <linux/ethtool.h>
  #include <linux/list.h>
  #include <linux/netfilter_bridge.h>
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +#include <linux/netfilter.h>
 +#include <net/netfilter/nf_flow_table.h>
 +#endif
@@ -24,7 +24,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	.get_link	= ethtool_op_get_link,
  };
  
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +static int br_flow_offload_check(struct flow_offload_hw_path *path)
 +{
 +	struct net_device *dev = path->dev;
@@ -53,7 +53,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	.ndo_bridge_setlink	 = br_setlink,
  	.ndo_bridge_dellink	 = br_dellink,
  	.ndo_features_check	 = passthru_features_check,
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +	.ndo_flow_offload_check	 = br_flow_offload_check,
 +#endif
  };

target/linux/generic/pending-4.14/644-net-pppoe-support-hardware-flow-table-offload.patch

@@ -13,7 +13,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  #include <net/net_namespace.h>
  #include <net/netns/generic.h>
  
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +#include <linux/netfilter.h>
 +#include <net/netfilter/nf_flow_table.h>
 +#endif
@@ -25,7 +25,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  		ppp_destroy_interface(ppp);
  }
  
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +static int ppp_flow_offload_check(struct flow_offload_hw_path *path)
 +{
 +	struct ppp *ppp = netdev_priv(path->dev);
@@ -53,7 +53,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	.ndo_start_xmit  = ppp_start_xmit,
  	.ndo_do_ioctl    = ppp_net_ioctl,
  	.ndo_get_stats64 = ppp_get_stats64,
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +	.ndo_flow_offload_check = ppp_flow_offload_check,
 +#endif
  };
@@ -65,7 +65,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  #include <linux/proc_fs.h>
  #include <linux/seq_file.h>
  
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +#include <linux/netfilter.h>
 +#include <net/netfilter/nf_flow_table.h>
 +#endif
@@ -77,7 +77,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	return __pppoe_xmit(sk, skb);
  }
  
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +static int pppoe_flow_offload_check(struct ppp_channel *chan,
 +				    struct flow_offload_hw_path *path)
 +{
@@ -104,7 +104,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
 +
  static const struct ppp_channel_ops pppoe_chan_ops = {
  	.start_xmit = pppoe_xmit,
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +	.flow_offload_check = pppoe_flow_offload_check,
 +#endif
  };
@@ -117,7 +117,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	/* Handle an ioctl call that has come in via /dev/ppp. */
  	int	(*ioctl)(struct ppp_channel *, unsigned int, unsigned long);
 +
-+#ifdef CONFIG_NF_FLOW_TABLE
++#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
 +	int	(*flow_offload_check)(struct ppp_channel *, struct flow_offload_hw_path *);
 +#endif
  };