From: Johannes Berg <johannes.berg@xxxxxxxxx>
Currently mac80211 implements these for all devices,
but given restrictions of some devices that isn't
really true, so prepare for being able to remove the
capability for some mac80211 devices.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
drivers/net/wireless/ath/ath6kl/init.c | 3 ++-
include/net/cfg80211.h | 4 ++++
net/mac80211/main.c | 4 +++-
net/wireless/nl80211.c | 16 +++++++++++-----
4 files changed, 20 insertions(+), 7 deletions(-)
--- a/include/net/cfg80211.h 2011-11-14 11:33:28.000000000 +0100
+++ b/include/net/cfg80211.h 2011-11-16 23:29:50.000000000 +0100
@@ -1700,6 +1700,8 @@ struct cfg80211_ops {
* cfg80211_report_obss_beacon().
* @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device
* responds to probe-requests in hardware.
+ * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX.
+ * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call.
*/
enum wiphy_flags {
WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0),
@@ -1721,6 +1723,8 @@ enum wiphy_flags {
WIPHY_FLAG_HAVE_AP_SME = BIT(17),
WIPHY_FLAG_REPORTS_OBSS = BIT(18),
WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19),
+ WIPHY_FLAG_OFFCHAN_TX = BIT(20),
+ WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21),
};
/**
--- a/net/wireless/nl80211.c 2011-11-14 11:33:28.000000000 +0100
+++ b/net/wireless/nl80211.c 2011-11-16 23:44:58.000000000 +0100
@@ -881,7 +881,8 @@ static int nl80211_send_wiphy(struct sk_
CMD(set_pmksa, SET_PMKSA);
CMD(del_pmksa, DEL_PMKSA);
CMD(flush_pmksa, FLUSH_PMKSA);
- CMD(remain_on_channel, REMAIN_ON_CHANNEL);
+ if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
+ CMD(remain_on_channel, REMAIN_ON_CHANNEL);
CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
CMD(mgmt_tx, FRAME);
CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
@@ -917,11 +918,12 @@ static int nl80211_send_wiphy(struct sk_
nla_nest_end(msg, nl_cmds);
- if (dev->ops->remain_on_channel)
+ if (dev->ops->remain_on_channel &&
+ dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
dev->wiphy.max_remain_on_channel_duration);
- if (dev->ops->mgmt_tx_cancel_wait)
+ if (dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)
NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
if (mgmt_stypes) {
@@ -5108,7 +5110,8 @@ static int nl80211_remain_on_channel(str
duration > rdev->wiphy.max_remain_on_channel_duration)
return -EINVAL;
- if (!rdev->ops->remain_on_channel)
+ if (!rdev->ops->remain_on_channel ||
+ !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
@@ -5321,7 +5324,7 @@ static int nl80211_tx_mgmt(struct sk_buf
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_DURATION]) {
- if (!rdev->ops->mgmt_tx_cancel_wait)
+ if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
return -EINVAL;
wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
}
@@ -5339,6 +5342,9 @@ static int nl80211_tx_mgmt(struct sk_buf
offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
+ if (offchan & !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
+ return -EINVAL;
+
no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
--- a/net/mac80211/main.c 2011-11-16 22:25:43.000000000 +0100
+++ b/net/mac80211/main.c 2011-11-16 23:31:44.000000000 +0100
@@ -594,7 +594,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(
wiphy->flags |= WIPHY_FLAG_NETNS_OK |
WIPHY_FLAG_4ADDR_AP |
WIPHY_FLAG_4ADDR_STATION |
- WIPHY_FLAG_REPORTS_OBSS;
+ WIPHY_FLAG_REPORTS_OBSS |
+ WIPHY_FLAG_OFFCHAN_TX |
+ WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
wiphy->features = NL80211_FEATURE_SK_TX_STATUS;
--- a/drivers/net/wireless/ath/ath6kl/init.c 2011-11-10 09:27:31.000000000 +0100
+++ b/drivers/net/wireless/ath/ath6kl/init.c 2011-11-16 23:35:08.000000000 +0100
@@ -1549,7 +1549,8 @@ static int ath6kl_init(struct net_device
ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST;
ar->wdev->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
- WIPHY_FLAG_HAVE_AP_SME;
+ WIPHY_FLAG_HAVE_AP_SME |
+ WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
status = ath6kl_target_config_wlan_params(ar);
if (!status)
--
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
