diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2008-05-12 20:51:44 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-05-12 20:51:44 -0700 |
| commit | f3994eceebf64cf356a82ffb2718ef538eb8d4f4 (patch) | |
| tree | f5d6b53c6026d721a9ba7e31b16e281f02f20a21 /net/mac80211 | |
| parent | f5184d267c1aedb9b7a8cc44e08ff6b8d382c3b5 (diff) | |
mac80211: assign needed_headroom/tailroom for netdevs
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@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/iface.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 80954a51218..06e88a5a036 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -54,6 +54,15 @@ int ieee80211_if_add(struct net_device *dev, const char *name, 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; |