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| author | Sven Eckelmann <sven@narfation.org> | 2012-11-04 17:11:45 +0100 |
|---|---|---|
| committer | Antonio Quartulli <ordex@autistici.org> | 2012-11-07 20:00:16 +0100 |
| commit | 5b246574430f808e5b98ef40b8058bf5ac1df02d (patch) | |
| tree | 7bc67e708ef2aee632de51020d7ba0d8c55a0883 /net/batman-adv/translation-table.c | |
| parent | 6f0a0986e328dd61610d898a09c9f4aa960ae64a (diff) | |
| download | op-kernel-dev-5b246574430f808e5b98ef40b8058bf5ac1df02d.zip op-kernel-dev-5b246574430f808e5b98ef40b8058bf5ac1df02d.tar.gz | |
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/translation-table.c')
| -rw-r--r-- | net/batman-adv/translation-table.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index a570d95..f8b9c32 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -1472,11 +1472,11 @@ batadv_tt_response_fill_table(uint16_t tt_len, uint8_t ttvn, tt_tot = tt_len / sizeof(struct batadv_tt_change); len = tt_query_size + tt_len; - skb = dev_alloc_skb(len + ETH_HLEN); + skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN); if (!skb) goto out; - skb_reserve(skb, ETH_HLEN); + skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN); tt_response = (struct batadv_tt_query_packet *)skb_put(skb, len); tt_response->ttvn = ttvn; @@ -1538,11 +1538,11 @@ static int batadv_send_tt_request(struct batadv_priv *bat_priv, if (!tt_req_node) goto out; - skb = dev_alloc_skb(sizeof(*tt_request) + ETH_HLEN); + skb = dev_alloc_skb(sizeof(*tt_request) + ETH_HLEN + NET_IP_ALIGN); if (!skb) goto out; - skb_reserve(skb, ETH_HLEN); + skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN); tt_req_len = sizeof(*tt_request); tt_request = (struct batadv_tt_query_packet *)skb_put(skb, tt_req_len); @@ -1653,11 +1653,11 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv, tt_tot = tt_len / sizeof(struct batadv_tt_change); len = sizeof(*tt_response) + tt_len; - skb = dev_alloc_skb(len + ETH_HLEN); + skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN); if (!skb) goto unlock; - skb_reserve(skb, ETH_HLEN); + skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN); packet_pos = skb_put(skb, len); tt_response = (struct batadv_tt_query_packet *)packet_pos; tt_response->ttvn = req_ttvn; @@ -1780,11 +1780,11 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv, tt_tot = tt_len / sizeof(struct batadv_tt_change); len = sizeof(*tt_response) + tt_len; - skb = dev_alloc_skb(len + ETH_HLEN); + skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN); if (!skb) goto unlock; - skb_reserve(skb, ETH_HLEN); + skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN); packet_pos = skb_put(skb, len); tt_response = (struct batadv_tt_query_packet *)packet_pos; tt_response->ttvn = req_ttvn; @@ -2118,11 +2118,11 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client, if (!batadv_tt_check_roam_count(bat_priv, client)) goto out; - skb = dev_alloc_skb(sizeof(*roam_adv_packet) + ETH_HLEN); + skb = dev_alloc_skb(sizeof(*roam_adv_packet) + ETH_HLEN + NET_IP_ALIGN); if (!skb) goto out; - skb_reserve(skb, ETH_HLEN); + skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN); roam_adv_packet = (struct batadv_roam_adv_packet *)skb_put(skb, len); |
