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mt7603: move mt7603_cb to prevent conflict with ampdu_len/ampdu_ack_len

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Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2016-02-19 21:34:55 +01:00
parent ecde4472ea
commit 796c59fd18
1 changed files with 12 additions and 3 deletions
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mt7603.h
+12 -3
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@@ -119,9 +119,13 @@ struct mt7603_dev {
extern const struct ieee80211_ops mt7603_ops;
/* need offset to prevent conflict with ampdu_ack_len */
#define MT_RATE_DRIVER_DATA_OFFSET 4
static inline struct mt7603_cb *mt7603_skb_cb(struct sk_buff *skb)
{
return (void *) IEEE80211_SKB_CB(skb)->rate_driver_data;
return ((void *) IEEE80211_SKB_CB(skb)->rate_driver_data) +
MT_RATE_DRIVER_DATA_OFFSET;
}
static inline struct sk_buff *mt7603_cb_skb(struct mt7603_cb *cb)
@@ -129,8 +133,13 @@ static inline struct sk_buff *mt7603_cb_skb(struct mt7603_cb *cb)
struct ieee80211_tx_info *info;
void *ptr = cb;
BUILD_BUG_ON(sizeof(*cb) > sizeof(info->rate_driver_data));
info = container_of(ptr, struct ieee80211_tx_info, rate_driver_data);
BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.ampdu_len) >=
(offsetof(struct ieee80211_tx_info, rate_driver_data) +
MT_RATE_DRIVER_DATA_OFFSET));
BUILD_BUG_ON(sizeof(*cb) + MT_RATE_DRIVER_DATA_OFFSET >
sizeof(info->rate_driver_data));
info = container_of(ptr - MT_RATE_DRIVER_DATA_OFFSET,
struct ieee80211_tx_info, rate_driver_data);
ptr = info;
return container_of(ptr, struct sk_buff, cb);
}