diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2010-12-14 17:54:28 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-12-15 17:03:56 -0500 |
| commit | a293911d4fd5e8593dbf478399a77f990d466269 (patch) | |
| tree | 826f614f178e915c4d2c08aba9ca5b2a38f78c75 | |
| parent | 14a085e77063090fb12ad391d0f4d46e593be225 (diff) | |
| download | linux-a293911d4fd5e8593dbf478399a77f990d466269.tar.bz2 | |
nl80211: advertise maximum remain-on-channel duration
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>
| -rw-r--r-- | include/linux/nl80211.h | 5 | ||||
| -rw-r--r-- | include/net/cfg80211.h | 5 | ||||
| -rw-r--r-- | net/mac80211/main.c | 2 | ||||
| -rw-r--r-- | net/wireless/nl80211.c | 7 |
4 files changed, 18 insertions, 1 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index b8fa25d741ba..1cee56b3a79a 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -773,6 +773,9 @@ enum nl80211_commands { * cache, a wiphy attribute. * * @NL80211_ATTR_DURATION: Duration of an operation in milliseconds, u32. + * @NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION: Device attribute that + * specifies the maximum duration that can be requested with the + * remain-on-channel operation, in milliseconds, u32. * * @NL80211_ATTR_COOKIE: Generic 64-bit cookie to identify objects. * @@ -1035,6 +1038,8 @@ enum nl80211_attrs { NL80211_ATTR_KEY_DEFAULT_TYPES, + NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 22be7c625b70..f45e15f12446 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1474,6 +1474,9 @@ struct ieee80211_txrx_stypes { * * @available_antennas: bitmap of antennas which are available to configure. * antenna configuration commands will be rejected unless this is set. + * + * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation + * may request, if implemented. */ struct wiphy { /* assign these fields before you register the wiphy */ @@ -1511,6 +1514,8 @@ struct wiphy { char fw_version[ETHTOOL_BUSINFO_LEN]; u32 hw_version; + u16 max_remain_on_channel_duration; + u8 max_num_pmkids; u32 available_antennas; diff --git a/net/mac80211/main.c b/net/mac80211/main.c index f7bdb7c78879..d87eb005690f 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -745,6 +745,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) } } + local->hw.wiphy->max_remain_on_channel_duration = 5000; + result = wiphy_register(local->hw.wiphy); if (result < 0) goto fail_wiphy_register; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 53f044370cde..594a6ac8b9d2 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -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) |