batman-adv: Drop deprecated sysfs support

The sysfs in batman-adv support was marked as deprecated by the commit
42cdd52 ("batman-adv: ABI: Mark sysfs files as deprecated") and
scheduled for removal in 2021.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

MAINTAINERS

@@ -3120,8 +3120,6 @@ Q:	https://patchwork.open-mesh.org/project/batman/list/
 B:	https://www.open-mesh.org/projects/batman-adv/issues
 C:	irc://chat.freenode.net/batman
 T:	git https://git.open-mesh.org/linux-merge.git
-F:	Documentation/ABI/obsolete/sysfs-class-net-batman-adv
-F:	Documentation/ABI/obsolete/sysfs-class-net-mesh
 F:	Documentation/networking/batman-adv.rst
 F:	include/uapi/linux/batadv_packet.h
 F:	include/uapi/linux/batman_adv.h

net/batman-adv/Kconfig

@@ -97,17 +97,6 @@ config BATMAN_ADV_DEBUG
 	  buffer. The output is controlled via the batadv netdev specific
 	  log_level setting.
 
-config BATMAN_ADV_SYSFS
-	bool "batman-adv sysfs entries"
-	depends on BATMAN_ADV
-	help
-	  Say Y here if you want to enable batman-adv device configuration and
-	  status interface through sysfs attributes. It is replaced by the
-	  batadv generic netlink family but still used by various userspace
-	  tools and scripts.
-
-	  If unsure, say Y.
-
 config BATMAN_ADV_TRACING
 	bool "B.A.T.M.A.N. tracing support"
 	depends on BATMAN_ADV

net/batman-adv/Makefile

@@ -28,7 +28,6 @@ batman-adv-y += originator.o
 batman-adv-y += routing.o
 batman-adv-y += send.o
 batman-adv-y += soft-interface.o
-batman-adv-$(CONFIG_BATMAN_ADV_SYSFS) += sysfs.o
 batman-adv-$(CONFIG_BATMAN_ADV_TRACING) += trace.o
 batman-adv-y += tp_meter.o
 batman-adv-y += translation-table.o

net/batman-adv/bat_v.c

@@ -13,7 +13,6 @@
 #include <linux/if_ether.h>
 #include <linux/init.h>
 #include <linux/jiffies.h>
-#include <linux/kernel.h>
 #include <linux/kref.h>
 #include <linux/list.h>
 #include <linux/minmax.h>
@@ -686,13 +685,6 @@ static ssize_t batadv_v_store_sel_class(struct batadv_priv *bat_priv,
 	return count;
 }
 
-static ssize_t batadv_v_show_sel_class(struct batadv_priv *bat_priv, char *buff)
-{
-	u32 class = atomic_read(&bat_priv->gw.sel_class);
-
-	return sprintf(buff, "%u.%u MBit\n", class / 10, class % 10);
-}
-
 /**
  * batadv_v_gw_throughput_get() - retrieve the GW-bandwidth for a given GW
  * @gw_node: the GW to retrieve the metric for
@@ -1061,7 +1053,6 @@ static struct batadv_algo_ops batadv_batman_v __read_mostly = {
 	.gw = {
 		.init_sel_class = batadv_v_init_sel_class,
 		.store_sel_class = batadv_v_store_sel_class,
-		.show_sel_class = batadv_v_show_sel_class,
 		.get_best_gw_node = batadv_v_gw_get_best_gw_node,
 		.is_eligible = batadv_v_gw_is_eligible,
 #ifdef CONFIG_BATMAN_ADV_DEBUGFS

net/batman-adv/hard-interface.c

@@ -39,7 +39,6 @@
 #include "originator.h"
 #include "send.h"
 #include "soft-interface.h"
-#include "sysfs.h"
 #include "translation-table.h"
 
 /**
@@ -889,13 +888,9 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface,
 	batadv_hardif_recalc_extra_skbroom(hard_iface->soft_iface);
 
 	/* nobody uses this interface anymore */
-	if (batadv_hardif_cnt(hard_iface->soft_iface) <= 1) {
+	if (batadv_hardif_cnt(hard_iface->soft_iface) <= 1)
 		batadv_gw_check_client_stop(bat_priv);
 
-		if (autodel == BATADV_IF_CLEANUP_AUTO)
-			batadv_softif_destroy_sysfs(hard_iface->soft_iface);
-	}
-
 	hard_iface->soft_iface = NULL;
 	batadv_hardif_put(hard_iface);
 
@@ -908,7 +903,6 @@ static struct batadv_hard_iface *
 batadv_hardif_add_interface(struct net_device *net_dev)
 {
 	struct batadv_hard_iface *hard_iface;
-	int ret;
 
 	ASSERT_RTNL();
 
@@ -921,10 +915,6 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 	if (!hard_iface)
 		goto release_dev;
 
-	ret = batadv_sysfs_add_hardif(&hard_iface->hardif_obj, net_dev);
-	if (ret)
-		goto free_if;
-
 	hard_iface->net_dev = net_dev;
 	hard_iface->soft_iface = NULL;
 	hard_iface->if_status = BATADV_IF_NOT_IN_USE;
@@ -954,8 +944,6 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 
 	return hard_iface;
 
-free_if:
-	kfree(hard_iface);
 release_dev:
 	dev_put(net_dev);
 out:
@@ -976,7 +964,6 @@ static void batadv_hardif_remove_interface(struct batadv_hard_iface *hard_iface)
 
 	hard_iface->if_status = BATADV_IF_TO_BE_REMOVED;
 	batadv_debugfs_del_hardif(hard_iface);
-	batadv_sysfs_del_hardif(&hard_iface->hardif_obj);
 	batadv_hardif_put(hard_iface);
 }
 
@@ -994,7 +981,6 @@ static int batadv_hard_if_event_softif(unsigned long event,
 
 	switch (event) {
 	case NETDEV_REGISTER:
-		batadv_sysfs_add_meshif(net_dev);
 		bat_priv = netdev_priv(net_dev);
 		batadv_softif_create_vlan(bat_priv, BATADV_NO_FLAGS);
 		break;

net/batman-adv/hard-interface.h

@@ -42,12 +42,6 @@ enum batadv_hard_if_state {
 
 	/** @BATADV_IF_TO_BE_ACTIVATED: interface is getting activated */
 	BATADV_IF_TO_BE_ACTIVATED,
-
-	/**
-	 * @BATADV_IF_I_WANT_YOU: interface is queued up (using sysfs) for being
-	 * added as slave interface of a batman-adv soft interface
-	 */
-	BATADV_IF_I_WANT_YOU,
 };
 
 /**