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batman-adv: Fix speedy join in gateway client mode

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Speedy join only works when the received packet is either broadcast or an
4addr unicast packet. Thus packets converted from broadcast to unicast via
the gateway handling code have to be converted to 4addr packets to allow
the receiving gateway server to add the sender address as temporary entry
to the translation table.

Not doing it will make the batman-adv gateway server drop the DHCP response
in many situations because it doesn't yet have the TT entry for the
destination of the DHCP response.

Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com>
This commit is contained in:
Sven Eckelmann 2016-06-17 15:54:03 +02:00
parent 14e98d86ac
commit 0d86d08be9
2 changed files with 36 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
batman-adv/Makefile
View File

@ -11,7 +11,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=batman-adv
PKG_VERSION:=2016.1
PKG_RELEASE:=2
PKG_RELEASE:=3
PKG_MD5SUM:=8c8e449009b4d29512d26ee308960bb5
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz

35
batman-adv/patches/0022-batman-adv-Fix-speedy-join-in-gateway-client-mode.patch Normal file
View File

@ -0,0 +1,35 @@
From: Sven Eckelmann <sven@narfation.org>
Date: Sun, 12 Jun 2016 10:43:19 +0200
Subject: [PATCH] batman-adv: Fix speedy join in gateway client mode
Speedy join only works when the received packet is either broadcast or an
4addr unicast packet. Thus packets converted from broadcast to unicast via
the gateway handling code have to be converted to 4addr packets to allow
the receiving gateway server to add the sender address as temporary entry
to the translation table.
Not doing it will make the batman-adv gateway server drop the DHCP response
in many situations because it doesn't yet have the TT entry for the
destination of the DHCP response.
Fixes: 9cbc67d9da47 ("batman-adv: change interface_rx to get orig node")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
net/batman-adv/send.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 7641785..e5be212 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -423,8 +423,8 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
struct batadv_orig_node *orig_node;
orig_node = batadv_gw_get_selected_orig(bat_priv);
- return batadv_send_skb_unicast(bat_priv, skb, BATADV_UNICAST, 0,
- orig_node, vid);
+ return batadv_send_skb_unicast(bat_priv, skb, BATADV_UNICAST_4ADDR,
+ BATADV_P_DATA, orig_node, vid);
}
void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface)