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authorPhoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>2014-05-14 17:43:07 +0200
committerDavid S. Miller <davem@davemloft.net>2014-05-15 15:51:42 -0400
commit8c84296fd2867118944399ab7e9051515a70d60d (patch)
treec258f1be2848e07f75979202bce494acb610cfe0
parentc3a6114f31600b94ee10ebf62e4d493b401ade87 (diff)
downloadop-kernel-dev-8c84296fd2867118944399ab7e9051515a70d60d.zip
op-kernel-dev-8c84296fd2867118944399ab7e9051515a70d60d.tar.gz
mac802154: account for all header parts during wpan header creationg
The current WPAN header creation code checks for EMSGSIZE conditions, but does not account for the MIC field that link layer security may add at the end of the frame. Now that we can accurately calculate the maximum payload size of packets, use that to check for EMSGSIZE conditions. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/mac802154/wpan.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac802154/wpan.c b/net/mac802154/wpan.c
index 1df7a6a..cb34064 100644
--- a/net/mac802154/wpan.c
+++ b/net/mac802154/wpan.c
@@ -231,7 +231,7 @@ static int mac802154_header_create(struct sk_buff *skb,
skb_reset_mac_header(skb);
skb->mac_len = hlen;
- if (hlen + len + 2 > dev->mtu)
+ if (len > ieee802154_max_payload(&hdr))
return -EMSGSIZE;
return hlen;
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