summaryrefslogtreecommitdiff
path: root/net/batman-adv/icmp_socket.c
diff options
context:
space:
mode:
authorSven Eckelmann <sven@narfation.org>2012-11-04 20:11:45 +0400
committerAntonio Quartulli <ordex@autistici.org>2012-11-07 23:00:16 +0400
commit5b246574430f808e5b98ef40b8058bf5ac1df02d (patch)
tree7bc67e708ef2aee632de51020d7ba0d8c55a0883 /net/batman-adv/icmp_socket.c
parent6f0a0986e328dd61610d898a09c9f4aa960ae64a (diff)
downloadlinux-5b246574430f808e5b98ef40b8058bf5ac1df02d.tar.xz
batman-adv: Reserve extra bytes in skb for better alignment
The ethernet header is 14 bytes long. Therefore, the data after it is not 4 byte aligned and may cause problems on systems without unaligned data access. Reserving NET_IP_ALIGN more byes can fix the misalignment of the ethernet header. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Diffstat (limited to 'net/batman-adv/icmp_socket.c')
-rw-r--r--net/batman-adv/icmp_socket.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index 5874c0e84846..87ca8095b011 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -177,13 +177,13 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
if (len >= sizeof(struct batadv_icmp_packet_rr))
packet_len = sizeof(struct batadv_icmp_packet_rr);
- skb = dev_alloc_skb(packet_len + ETH_HLEN);
+ skb = dev_alloc_skb(packet_len + ETH_HLEN + NET_IP_ALIGN);
if (!skb) {
len = -ENOMEM;
goto out;
}
- skb_reserve(skb, ETH_HLEN);
+ skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
icmp_packet = (struct batadv_icmp_packet_rr *)skb_put(skb, packet_len);
if (copy_from_user(icmp_packet, buff, packet_len)) {