Merge pull request #473 from ecsv/batadv-for-17.01

lede-17.01: batman-adv: Fix duplicated OGMs on NETDEV_UP

batman-adv/Makefile

@@ -11,7 +11,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=batman-adv
 
 PKG_VERSION:=2016.5
-PKG_RELEASE:=14
+PKG_RELEASE:=15
 PKG_MD5SUM:=6717a933a08dd2a01b00df30cb9f16a8
 PKG_HASH:=d0a0fc90c4f410b57d043215e253bb0b855efa5edbe165d87c17bfdcfafd0db7
 

batman-adv/patches/0066-batman-adv-Fix-duplicated-OGMs-on-NETDEV_UP.patch

@@ -0,0 +1,83 @@
+From: Sven Eckelmann <sven@narfation.org>
+Date: Sun, 2 Jun 2019 10:57:31 +0200
+Subject: batman-adv: Fix duplicated OGMs on NETDEV_UP
+
+The state of slave interfaces are handled differently depending on whether
+the interface is up or not. All active interfaces (IFF_UP) will transmit
+OGMs. But for B.A.T.M.A.N. IV, also non-active interfaces are scheduling
+(low TTL) OGMs on active interfaces. The code which setups and schedules
+the OGMs must therefore already be called when the interfaces gets added as
+slave interface and the transmit function must then check whether it has to
+send out the OGM or not on the specific slave interface.
+
+But the commit 0d8468553c3c ("batman-adv: remove ogm_emit and ogm_schedule
+API calls") moved the setup code from the enable function to the activate
+function. The latter is called either when the added slave was already up
+when batadv_hardif_enable_interface processed the new interface or when a
+NETDEV_UP event was received for this slave interfac. As result, each
+NETDEV_UP would schedule a new OGM worker for the interface and thus OGMs
+would be send a lot more than expected.
+
+Fixes: 0d8468553c3c ("batman-adv: remove ogm_emit and ogm_schedule API calls")
+Reported-by: Linus Lüssing <linus.luessing@c0d3.blue>
+Signed-off-by: Sven Eckelmann <sven@narfation.org>
+
+Origin: backport, https://git.open-mesh.org/batman-adv.git/commit/c92331e0df3c0c5645ee5a897eb018c5da5e4aa5
+
+diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
+index f0174a17b30d14e5c127106b364b8fbc8ec384ee..73ea771287fd8babc6c8858643e84c1d9cba3691 100644
+--- a/net/batman-adv/bat_iv_ogm.c
++++ b/net/batman-adv/bat_iv_ogm.c
+@@ -2475,7 +2475,7 @@ batadv_iv_ogm_neigh_is_sob(struct batadv_neigh_node *neigh1,
+ 	return ret;
+ }
+ 
+-static void batadv_iv_iface_activate(struct batadv_hard_iface *hard_iface)
++static void batadv_iv_iface_enabled(struct batadv_hard_iface *hard_iface)
+ {
+ 	/* begin scheduling originator messages on that interface */
+ 	batadv_iv_ogm_schedule(hard_iface);
+@@ -2815,8 +2815,8 @@ unlock:
+ static struct batadv_algo_ops batadv_batman_iv __read_mostly = {
+ 	.name = "BATMAN_IV",
+ 	.iface = {
+-		.activate = batadv_iv_iface_activate,
+ 		.enable = batadv_iv_ogm_iface_enable,
++		.enabled = batadv_iv_iface_enabled,
+ 		.disable = batadv_iv_ogm_iface_disable,
+ 		.update_mac = batadv_iv_ogm_iface_update_mac,
+ 		.primary_set = batadv_iv_ogm_primary_iface_set,
+diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
+index c9a3b7bc07bcc443281c4f12c750c4d925c3b2c3..6d96ecd14fb0881e3384850bc34063b999fe5c93 100644
+--- a/net/batman-adv/hard-interface.c
++++ b/net/batman-adv/hard-interface.c
+@@ -799,6 +799,9 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
+ 
+ 	batadv_hardif_recalc_extra_skbroom(soft_iface);
+ 
++	if (bat_priv->algo_ops->iface.enabled)
++		bat_priv->algo_ops->iface.enabled(hard_iface);
++
+ out:
+ 	return 0;
+ 
+diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
+index 1d8ee2bdbe01067ae4dbb9441cebeaa20735cdf9..5c5762f0f89c8b79b52288104d975dc3753bbf82 100644
+--- a/net/batman-adv/types.h
++++ b/net/batman-adv/types.h
+@@ -1428,6 +1428,7 @@ struct batadv_forw_packet {
+  * @activate: start routing mechanisms when hard-interface is brought up
+  *  (optional)
+  * @enable: init routing info when hard-interface is enabled
++ * @enabled: notification when hard-interface was enabled (optional)
+  * @disable: de-init routing info when hard-interface is disabled
+  * @update_mac: (re-)init mac addresses of the protocol information
+  *  belonging to this hard-interface
+@@ -1436,6 +1437,7 @@ struct batadv_forw_packet {
+ struct batadv_algo_iface_ops {
+ 	void (*activate)(struct batadv_hard_iface *hard_iface);
+ 	int (*enable)(struct batadv_hard_iface *hard_iface);
++	void (*enabled)(struct batadv_hard_iface *hard_iface);
+ 	void (*disable)(struct batadv_hard_iface *hard_iface);
+ 	void (*update_mac)(struct batadv_hard_iface *hard_iface);
+ 	void (*primary_set)(struct batadv_hard_iface *hard_iface);