diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2010-01-26 13:19:52 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-01-26 16:53:21 (GMT) |
| commit | 56007a028c51cbf800a6c969d6f6431d23443b99 (patch) | |
| tree | 8bc0280467824ed3b5f95810444b1f8e1ebc2750 /drivers/net/wireless/mwl8k.c | |
| parent | c21dbf9214bce129f92e1af05552553ff0e318ed (diff) | |
| download | linux-56007a028c51cbf800a6c969d6f6431d23443b99.tar.xz | |
mac80211: wait for beacon before enabling powersave
Because DTIM information is required for powersave
but is only conveyed in beacons, wait for a beacon
before enabling powersave, and change the way the
information is conveyed to the driver accordingly.
mwl8k doesn't currently seem to implement PS but
requires the DTIM period in a different way; after
talking to Lennert we agreed to just have mwl8k do
the parsing itself in the finalize_join work.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/mwl8k.c')
| -rw-r--r-- | drivers/net/wireless/mwl8k.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c index 68546ca..f0f08f3 100644 --- a/drivers/net/wireless/mwl8k.c +++ b/drivers/net/wireless/mwl8k.c @@ -3881,12 +3881,16 @@ static void mwl8k_finalize_join_worker(struct work_struct *work) struct mwl8k_priv *priv = container_of(work, struct mwl8k_priv, finalize_join_worker); struct sk_buff *skb = priv->beacon_skb; - struct mwl8k_vif *mwl8k_vif; + struct ieee80211_mgmt *mgmt = (void *)skb->data; + int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); + const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, + mgmt->u.beacon.variable, len); + int dtim_period = 1; + + if (tim && tim[1] >= 2) + dtim_period = tim[3]; - mwl8k_vif = mwl8k_first_vif(priv); - if (mwl8k_vif != NULL) - mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, - mwl8k_vif->vif->bss_conf.dtim_period); + mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); dev_kfree_skb(skb); priv->beacon_skb = NULL; |