batman-adv: fix header alignment by unrolling batadv_header

The size of the batadv_header of 3 is problematic on some architectures
which automatically pad all structures to a 32 bit boundary. To not lose
performance by packing this struct, better embed it into the various
host structures.

Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 6c8c3934bd7b..b316a4cb6f14 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -349,7 +349,7 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
 
         unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;
 
-        switch (unicast_4addr_packet->u.header.packet_type) {
+        switch (unicast_4addr_packet->u.packet_type) {
         case BATADV_UNICAST:
                 batadv_dbg(BATADV_DBG_DAT, bat_priv,
                            "* encapsulated within a UNICAST packet\n");
@@ -374,7 +374,7 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
                         break;
                 default:
                         batadv_dbg(BATADV_DBG_DAT, bat_priv, "* type: Unknown (%u)!\n",
-                                   unicast_4addr_packet->u.header.packet_type);
+                                   unicast_4addr_packet->u.packet_type);
                 }
                 break;
         case BATADV_BCAST:
@@ -387,7 +387,7 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
         default:
                 batadv_dbg(BATADV_DBG_DAT, bat_priv,
                            "* encapsulated within an unknown packet type (0x%x)\n",
-                           unicast_4addr_packet->u.header.packet_type);
+                           unicast_4addr_packet->u.packet_type);
         }
 }