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nl80211: advertise maximum remain-on-channel duration

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With the upcoming hardware offload implementation,
some devices will have a different maximum duration
for the remain-on-channel command. Advertise the
maximum duration in mac80211, and make mac80211 set
it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2010-12-14 17:54:28 +01:00
committed by John W. Linville
parent 14a085e770
commit a293911d4f
4 changed files with 18 additions and 1 deletions
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7
net/wireless/nl80211.c
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@@ -755,6 +755,10 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
nla_nest_end(msg, nl_cmds);
if (dev->ops->remain_on_channel)
NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
dev->wiphy.max_remain_on_channel_duration);
/* for now at least assume all drivers have it */
if (dev->ops->mgmt_tx)
NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
@@ -4228,7 +4232,8 @@ static int nl80211_remain_on_channel(struct sk_buff *skb,
* We should be on that channel for at least one jiffie,
* and more than 5 seconds seems excessive.
*/
if (!duration || !msecs_to_jiffies(duration) || duration > 5000)
if (!duration || !msecs_to_jiffies(duration) ||
duration > rdev->wiphy.max_remain_on_channel_duration)
return -EINVAL;
if (!rdev->ops->remain_on_channel)