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| author | Martin Hundebøll <martin@hundeboll.net> | 2013-03-14 21:30:21 +0100 |
|---|---|---|
| committer | Antonio Quartulli <ordex@autistici.org> | 2013-03-27 10:27:31 +0100 |
| commit | e6a0b495ffee1301c239da49818008e7de3c2ae1 (patch) | |
| tree | c68ffc41df3776d6b767c8d927a0d6d85868a6ee /net | |
| parent | 6bdeaba47d87f48a3943b6899d6c6e6f17d52f1d (diff) | |
| download | lwn-e6a0b495ffee1301c239da49818008e7de3c2ae1.tar.gz lwn-e6a0b495ffee1301c239da49818008e7de3c2ae1.zip | |
batman-adv: Fix endianness errors for network coding
Add a htonl() in network_coding.c when reading the sequence number
from received ogm_packet, to avoid wrong byte ordering when comparing
with a host value. This bug was introduced in
3ed7ada3f0bbcd058567bc0a8f9729a73eba7db6 ("batman-adv: network coding -
detect coding nodes and remove these after timeout").
Change the type of coded_packet->coded_len from uint16 to __be16 to
avoid wrong assumptions about endianness in later uses. Introduced in
c3289f3650d34b60296000a629c99f2488f7c3dd ("batman-adv: network coding -
code and transmit packets if possible").
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/batman-adv/network-coding.c | 2 | ||||
| -rw-r--r-- | net/batman-adv/packet.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c index 57280797bf4e..086c107a452e 100644 --- a/net/batman-adv/network-coding.c +++ b/net/batman-adv/network-coding.c @@ -654,7 +654,7 @@ static bool batadv_can_nc_with_orig(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, struct batadv_ogm_packet *ogm_packet) { - if (orig_node->last_real_seqno != ogm_packet->seqno) + if (orig_node->last_real_seqno != ntohl(ogm_packet->seqno)) return false; if (orig_node->last_ttl != ogm_packet->header.ttl + 1) return false; diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h index a07995834b84..a51ccfc39da4 100644 --- a/net/batman-adv/packet.h +++ b/net/batman-adv/packet.h @@ -308,7 +308,7 @@ struct batadv_coded_packet { uint8_t second_source[ETH_ALEN]; uint8_t second_orig_dest[ETH_ALEN]; __be32 second_crc; - uint16_t coded_len; + __be16 coded_len; }; #endif /* _NET_BATMAN_ADV_PACKET_H_ */ |