diff options
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/chan.c | 3 | ||||
| -rw-r--r-- | net/wireless/ibss.c | 24 | ||||
| -rw-r--r-- | net/wireless/nl80211.c | 8 | ||||
| -rw-r--r-- | net/wireless/util.c | 14 |
4 files changed, 38 insertions, 11 deletions
diff --git a/net/wireless/chan.c b/net/wireless/chan.c index 16f3c3a7b2c1..9b8cc877eb19 100644 --- a/net/wireless/chan.c +++ b/net/wireless/chan.c @@ -504,7 +504,8 @@ cfg80211_get_chan_state(struct wireless_dev *wdev, case NL80211_IFTYPE_ADHOC: if (wdev->current_bss) { *chan = wdev->current_bss->pub.channel; - *chanmode = wdev->ibss_fixed + *chanmode = (wdev->ibss_fixed && + !wdev->ibss_dfs_possible) ? CHAN_MODE_SHARED : CHAN_MODE_EXCLUSIVE; return; diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c index 39bff7d36768..fa7461b6ba39 100644 --- a/net/wireless/ibss.c +++ b/net/wireless/ibss.c @@ -83,6 +83,8 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, struct cfg80211_cached_keys *connkeys) { struct wireless_dev *wdev = dev->ieee80211_ptr; + struct ieee80211_channel *check_chan; + u8 radar_detect_width = 0; int err; ASSERT_WDEV_LOCK(wdev); @@ -114,14 +116,28 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, wdev->connect_keys = connkeys; wdev->ibss_fixed = params->channel_fixed; + wdev->ibss_dfs_possible = params->userspace_handles_dfs; #ifdef CONFIG_CFG80211_WEXT wdev->wext.ibss.chandef = params->chandef; #endif + check_chan = params->chandef.chan; + if (params->userspace_handles_dfs) { + /* use channel NULL to check for radar even if the current + * channel is not a radar channel - it might decide to change + * to DFS channel later. + */ + radar_detect_width = BIT(params->chandef.width); + check_chan = NULL; + } + + err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, + check_chan, + (params->channel_fixed && + !radar_detect_width) + ? CHAN_MODE_SHARED + : CHAN_MODE_EXCLUSIVE, + radar_detect_width); - err = cfg80211_can_use_chan(rdev, wdev, params->chandef.chan, - params->channel_fixed - ? CHAN_MODE_SHARED - : CHAN_MODE_EXCLUSIVE); if (err) { wdev->connect_keys = NULL; return err; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 460638ac2d73..7502d33a3a70 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -356,6 +356,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 }, [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, + [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, }; /* policy for the key attributes */ @@ -5768,9 +5769,9 @@ skip_beacons: if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef)) return -EINVAL; - /* DFS channels are only supported for AP/P2P GO ... for now. */ if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP || - dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) { + dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO || + dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) { err = cfg80211_chandef_dfs_required(wdev->wiphy, ¶ms.chandef); if (err < 0) { @@ -6602,6 +6603,9 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) ibss.control_port = nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); + ibss.userspace_handles_dfs = + nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); + err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); if (err) kfree(connkeys); diff --git a/net/wireless/util.c b/net/wireless/util.c index 3c8be6104ba4..935dea9485da 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1249,7 +1249,7 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev, enum cfg80211_chan_mode chmode; int num_different_channels = 0; int total = 1; - bool radar_required; + bool radar_required = false; int i, j; ASSERT_RTNL(); @@ -1264,14 +1264,20 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev, case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_WDS: - radar_required = !!(chan && - (chan->flags & IEEE80211_CHAN_RADAR)); + /* if the interface could potentially choose a DFS channel, + * then mark DFS as required. + */ + if (!chan) { + if (chanmode != CHAN_MODE_UNDEFINED && radar_detect) + radar_required = true; + break; + } + radar_required = !!(chan->flags & IEEE80211_CHAN_RADAR); break; case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_P2P_DEVICE: case NL80211_IFTYPE_MONITOR: - radar_required = false; break; case NUM_NL80211_IFTYPES: case NL80211_IFTYPE_UNSPECIFIED: |