This assigns the netdev's needed_headroom/tailroom members to take advantage of pre-allocated space for 802.11 headers. Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> --- net/mac80211/iface.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- everything.orig/net/mac80211/iface.c 2008-05-04 23:24:17.000000000 +0200 +++ everything/net/mac80211/iface.c 2008-05-04 23:31:46.000000000 +0200 @@ -53,6 +53,15 @@ int ieee80211_if_add(struct net_device * if (!ndev) return -ENOMEM; + ndev->needed_headroom = local->tx_headroom + + 4*6 /* four MAC addresses */ + + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ + + 6 /* mesh */ + + 8 /* rfc1042/bridge tunnel */ + - ETH_HLEN /* ethernet hard_header_len */ + + IEEE80211_ENCRYPT_HEADROOM; + ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; + ret = dev_alloc_name(ndev, ndev->name); if (ret < 0) goto fail; -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
