kernel: backport flow dissector batman-adv support

Improves performance on multicore systems handling batman-adv traffic

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

target/linux/generic/backport-4.14/270-batman-adv-Let-packet.h-include-its-headers-directly.patch

@@ -0,0 +1,36 @@
+From: Sven Eckelmann <sven.eckelmann@openmesh.com>
+Date: Thu, 21 Dec 2017 10:17:38 +0100
+Subject: [PATCH] batman-adv: Let packet.h include its headers directly
+
+The headers used by packet.h should also be included by it directly. main.h
+is currently dealing with it in batman-adv, but this will no longer work
+when this header is moved to include/uapi/linux/.
+
+Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+--- a/net/batman-adv/main.h
++++ b/net/batman-adv/main.h
+@@ -184,10 +184,8 @@ enum batadv_uev_type {
+
+ /* Kernel headers */
+
+-#include <linux/bitops.h> /* for packet.h */
+ #include <linux/compiler.h>
+ #include <linux/etherdevice.h>
+-#include <linux/if_ether.h> /* for packet.h */
+ #include <linux/if_vlan.h>
+ #include <linux/jiffies.h>
+ #include <linux/percpu.h>
+--- a/net/batman-adv/packet.h
++++ b/net/batman-adv/packet.h
+@@ -19,6 +19,8 @@
+ #define _NET_BATMAN_ADV_PACKET_H_
+
+ #include <asm/byteorder.h>
++#include <linux/bitops.h>
++#include <linux/if_ether.h>
+ #include <linux/types.h>
+
+ #define batadv_tp_is_error(n) ((u8)(n) > 127 ? 1 : 0)

target/linux/generic/backport-4.14/271-batman-adv-Remove-usage-of-BIT-x-in-packet.h.patch

@@ -0,0 +1,72 @@
+From: Sven Eckelmann <sven.eckelmann@openmesh.com>
+Date: Thu, 21 Dec 2017 10:17:39 +0100
+Subject: [PATCH] batman-adv: Remove usage of BIT(x) in packet.h
+
+The BIT(x) macro is no longer available for uapi headers because it is
+defined outside of it (linux/bitops.h). The use of it must therefore be
+avoided and replaced by an appropriate other representation.
+
+Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+--- a/net/batman-adv/packet.h
++++ b/net/batman-adv/packet.h
+@@ -19,7 +19,6 @@
+ #define _NET_BATMAN_ADV_PACKET_H_
+
+ #include <asm/byteorder.h>
+-#include <linux/bitops.h>
+ #include <linux/if_ether.h>
+ #include <linux/types.h>
+
+@@ -85,9 +84,9 @@ enum batadv_subtype {
+  *     one hop neighbor on the interface where it was originally received.
+  */
+ enum batadv_iv_flags {
+-	BATADV_NOT_BEST_NEXT_HOP   = BIT(0),
+-	BATADV_PRIMARIES_FIRST_HOP = BIT(1),
+-	BATADV_DIRECTLINK          = BIT(2),
++	BATADV_NOT_BEST_NEXT_HOP   = 1UL << 0,
++	BATADV_PRIMARIES_FIRST_HOP = 1UL << 1,
++	BATADV_DIRECTLINK          = 1UL << 2,
+ };
+
+ /* ICMP message types */
+@@ -108,9 +107,9 @@ enum batadv_icmp_packettype {
+  * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets
+  */
+ enum batadv_mcast_flags {
+-	BATADV_MCAST_WANT_ALL_UNSNOOPABLES	= BIT(0),
+-	BATADV_MCAST_WANT_ALL_IPV4		= BIT(1),
+-	BATADV_MCAST_WANT_ALL_IPV6		= BIT(2),
++	BATADV_MCAST_WANT_ALL_UNSNOOPABLES	= 1UL << 0,
++	BATADV_MCAST_WANT_ALL_IPV4		= 1UL << 1,
++	BATADV_MCAST_WANT_ALL_IPV6		= 1UL << 2,
+ };
+
+ /* tt data subtypes */
+@@ -124,10 +123,10 @@ enum batadv_mcast_flags {
+  * @BATADV_TT_FULL_TABLE: contains full table to replace existing table
+  */
+ enum batadv_tt_data_flags {
+-	BATADV_TT_OGM_DIFF   = BIT(0),
+-	BATADV_TT_REQUEST    = BIT(1),
+-	BATADV_TT_RESPONSE   = BIT(2),
+-	BATADV_TT_FULL_TABLE = BIT(4),
++	BATADV_TT_OGM_DIFF   = 1UL << 0,
++	BATADV_TT_REQUEST    = 1UL << 1,
++	BATADV_TT_RESPONSE   = 1UL << 2,
++	BATADV_TT_FULL_TABLE = 1UL << 4,
+ };
+
+ /**
+@@ -135,7 +134,7 @@ enum batadv_tt_data_flags {
+  * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not
+  */
+ enum batadv_vlan_flags {
+-	BATADV_VLAN_HAS_TAG	= BIT(15),
++	BATADV_VLAN_HAS_TAG	= 1UL << 15,
+ };
+
+ /* claim frame types for the bridge loop avoidance */