Patrick McHardy wrote:

François Valenduc wrote:

quoted

Patrick McHardy a écrit :

quoted

quoted

In file included from net/mac80211/main.c:11:
include/net/mac80211.h: In function ‘IEEE80211_SKB_CB’:
include/net/mac80211.h:347: erreur: size of array ‘type name’ is 
negative

I was afraid that might happen. This means skb->cb is not large
enough to hold both the qdisc and the ieee80211 structs.

Just for testing, changing (include/net/mac80211.h):

#define IEEE80211_TX_INFO_DRIVER_DATA_SIZE \
        (sizeof(((struct sk_buff *)0)->cb) - 8)

to

#define IEEE80211_TX_INFO_DRIVER_DATA_SIZE \
        (sizeof(((struct sk_buff *)0)->cb) - 12)

might help to get it to compile. If that doesn't work, try -16.

That didn't work, neither with -12 or -16.

I'll give it a try myself, please wait a few minutes.

We can't fit them into the cb together, I don't see a way to
shrink ieee80211_tx_info.

Maybe one of the wireless folks can suggest something? Is it
really necessary to pass the full struct ieee80211_tx_info
through the qdisc layer, or could the struct be split? It
needs to find a way to co-exist peacefully with qdiscs'
skb->cb usage.