net/ieee80211/ieee80211_crypt_tkip.c: In function 'michael_mic_hdr': net/ieee80211/ieee80211_crypt_tkip.c:587: warning: overflow in implicit constant conversion The reason is pretty obvious: hdr[12] = qoshdr->qos_ctl & cpu_to_le16(IEEE80211_QCTL_TID); where IEEE80211_QCTL_TID is 0xF, so that's made into 0xF00 on BE and then truncated to 0x00. Not very useful. This was introduced in this commit: commit 65b6a2775102cd81e57158ef4b1cb89641f76cfd Author: Zhu Yi <yi.zhu@xxxxxxxxx> Date: Mon Aug 21 11:32:31 2006 +0800 with the change - hdr[12] = le16_to_cpu(qoshdr->qos_ctl) & IEEE80211_QCTL_TID; + hdr[12] = qoshdr->qos_ctl & cpu_to_le16(IEEE80211_QCTL_TID); The code before the change looks much saner since you're accessing the header as bytes... johannes
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