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| author | Simon Wunderlich <sw@simonwunderlich.de> | 2013-12-02 20:38:31 +0100 |
|---|---|---|
| committer | Antonio Quartulli <antonio@meshcoding.com> | 2013-12-28 12:51:16 +0100 |
| commit | a40d9b075c21f06872de3f05cc2eb3d06665e2ff (patch) | |
| tree | 85aefae654246aa4f89e046bb0bca6b5b85b76f6 /net/batman-adv/soft-interface.c | |
| parent | 46b76e0b8b5e21fa5a2387d6f72b193514e7f722 (diff) | |
| download | linux-a40d9b075c21f06872de3f05cc2eb3d06665e2ff.tar.gz linux-a40d9b075c21f06872de3f05cc2eb3d06665e2ff.tar.bz2 linux-a40d9b075c21f06872de3f05cc2eb3d06665e2ff.zip | |
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>
Diffstat (limited to 'net/batman-adv/soft-interface.c')
| -rw-r--r-- | net/batman-adv/soft-interface.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 36f050876f82..b4881f8e28e8 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -264,11 +264,11 @@ static int batadv_interface_tx(struct sk_buff *skb, goto dropped; bcast_packet = (struct batadv_bcast_packet *)skb->data; - bcast_packet->header.version = BATADV_COMPAT_VERSION; - bcast_packet->header.ttl = BATADV_TTL; + bcast_packet->version = BATADV_COMPAT_VERSION; + bcast_packet->ttl = BATADV_TTL; /* batman packet type: broadcast */ - bcast_packet->header.packet_type = BATADV_BCAST; + bcast_packet->packet_type = BATADV_BCAST; bcast_packet->reserved = 0; /* hw address of first interface is the orig mac because only @@ -328,7 +328,7 @@ void batadv_interface_rx(struct net_device *soft_iface, struct sk_buff *skb, struct batadv_hard_iface *recv_if, int hdr_size, struct batadv_orig_node *orig_node) { - struct batadv_header *batadv_header = (struct batadv_header *)skb->data; + struct batadv_bcast_packet *batadv_bcast_packet; struct batadv_priv *bat_priv = netdev_priv(soft_iface); __be16 ethertype = htons(ETH_P_BATMAN); struct vlan_ethhdr *vhdr; @@ -336,7 +336,8 @@ void batadv_interface_rx(struct net_device *soft_iface, unsigned short vid; bool is_bcast; - is_bcast = (batadv_header->packet_type == BATADV_BCAST); + batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data; + is_bcast = (batadv_bcast_packet->packet_type == BATADV_BCAST); /* check if enough space is available for pulling, and pull */ if (!pskb_may_pull(skb, hdr_size)) |