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cfg80211: change GO_CONCURRENT to IR_CONCURRENT for STA 

The GO_CONCURRENT regulatory definition can be extended to station
interfaces requesting to IR as part of TDLS off-channel operations.
Rename the GO_CONCURRENT flag to IR_CONCURRENT and allow the added
use-case.

Change internal users of GO_CONCURRENT to use the new definition.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arik Nemtsov 2015-05-06 16:28:31 +03:00 committed by Johannes Berg
parent 8aca9b2913
commit 06f207fc54
6 changed files with 45 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
View File

@ -248,7 +248,7 @@ static u32 iwl_get_channel_flags(u8 ch_num, int ch_idx, bool is_5ghz,
*/
if ((nvm_flags & NVM_CHANNEL_GO_CONCURRENT) &&
(flags & IEEE80211_CHAN_NO_IR))
flags |= IEEE80211_CHAN_GO_CONCURRENT;
flags |= IEEE80211_CHAN_IR_CONCURRENT;
return flags;
}

4
include/net/cfg80211.h
View File

@ -111,7 +111,7 @@ enum ieee80211_band {
* This may be due to the driver or due to regulatory bandwidth
* restrictions.
* @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY
* @IEEE80211_CHAN_GO_CONCURRENT: see %NL80211_FREQUENCY_ATTR_GO_CONCURRENT
* @IEEE80211_CHAN_IR_CONCURRENT: see %NL80211_FREQUENCY_ATTR_IR_CONCURRENT
* @IEEE80211_CHAN_NO_20MHZ: 20 MHz bandwidth is not permitted
* on this channel.
* @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted
@ -129,7 +129,7 @@ enum ieee80211_channel_flags {
IEEE80211_CHAN_NO_80MHZ = 1<<7,
IEEE80211_CHAN_NO_160MHZ = 1<<8,
IEEE80211_CHAN_INDOOR_ONLY = 1<<9,
IEEE80211_CHAN_GO_CONCURRENT = 1<<10,
IEEE80211_CHAN_IR_CONCURRENT = 1<<10,
IEEE80211_CHAN_NO_20MHZ = 1<<11,
IEEE80211_CHAN_NO_10MHZ = 1<<12,
};

28
include/uapi/linux/nl80211.h
View File

@ -2620,16 +2620,17 @@ enum nl80211_band_attr {
* an indoor surroundings, i.e., it is connected to AC power (and not
* through portable DC inverters) or is under the control of a master
* that is acting as an AP and is connected to AC power.
* @NL80211_FREQUENCY_ATTR_GO_CONCURRENT: GO operation is allowed on this
* @NL80211_FREQUENCY_ATTR_IR_CONCURRENT: IR operation is allowed on this
* channel if it's connected concurrently to a BSS on the same channel on
* the 2 GHz band or to a channel in the same UNII band (on the 5 GHz
* band), and IEEE80211_CHAN_RADAR is not set. Instantiating a GO on a
* channel that has the GO_CONCURRENT attribute set can be done when there
* is a clear assessment that the device is operating under the guidance of
* an authorized master, i.e., setting up a GO while the device is also
* connected to an AP with DFS and radar detection on the UNII band (it is
* up to user-space, i.e., wpa_supplicant to perform the required
* verifications)
* band), and IEEE80211_CHAN_RADAR is not set. Instantiating a GO or TDLS
* off-channel on a channel that has the IR_CONCURRENT attribute set can be
* done when there is a clear assessment that the device is operating under
* the guidance of an authorized master, i.e., setting up a GO or TDLS
* off-channel while the device is also connected to an AP with DFS and
* radar detection on the UNII band (it is up to user-space, i.e.,
* wpa_supplicant to perform the required verifications). Using this
* attribute for IR is disallowed for master interfaces (IBSS, AP).
* @NL80211_FREQUENCY_ATTR_NO_20MHZ: 20 MHz operation is not allowed
* on this channel in current regulatory domain.
* @NL80211_FREQUENCY_ATTR_NO_10MHZ: 10 MHz operation is not allowed
@ -2641,7 +2642,7 @@ enum nl80211_band_attr {
* See https://apps.fcc.gov/eas/comments/GetPublishedDocument.html?id=327&tn=528122
* for more information on the FCC description of the relaxations allowed
* by NL80211_FREQUENCY_ATTR_INDOOR_ONLY and
* NL80211_FREQUENCY_ATTR_GO_CONCURRENT.
* NL80211_FREQUENCY_ATTR_IR_CONCURRENT.
*/
enum nl80211_frequency_attr {
__NL80211_FREQUENCY_ATTR_INVALID,
@ -2659,7 +2660,7 @@ enum nl80211_frequency_attr {
NL80211_FREQUENCY_ATTR_NO_160MHZ,
NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
NL80211_FREQUENCY_ATTR_INDOOR_ONLY,
NL80211_FREQUENCY_ATTR_GO_CONCURRENT,
NL80211_FREQUENCY_ATTR_IR_CONCURRENT,
NL80211_FREQUENCY_ATTR_NO_20MHZ,
NL80211_FREQUENCY_ATTR_NO_10MHZ,
@ -2672,6 +2673,8 @@ enum nl80211_frequency_attr {
#define NL80211_FREQUENCY_ATTR_PASSIVE_SCAN NL80211_FREQUENCY_ATTR_NO_IR
#define NL80211_FREQUENCY_ATTR_NO_IBSS NL80211_FREQUENCY_ATTR_NO_IR
#define NL80211_FREQUENCY_ATTR_NO_IR NL80211_FREQUENCY_ATTR_NO_IR
#define NL80211_FREQUENCY_ATTR_GO_CONCURRENT \
NL80211_FREQUENCY_ATTR_IR_CONCURRENT
/**
* enum nl80211_bitrate_attr - bitrate attributes
@ -2830,7 +2833,7 @@ enum nl80211_sched_scan_match_attr {
* @NL80211_RRF_AUTO_BW: maximum available bandwidth should be calculated
* base on contiguous rules and wider channels will be allowed to cross
* multiple contiguous/overlapping frequency ranges.
* @NL80211_RRF_GO_CONCURRENT: See &NL80211_FREQUENCY_ATTR_GO_CONCURRENT
* @NL80211_RRF_IR_CONCURRENT: See &NL80211_FREQUENCY_ATTR_IR_CONCURRENT
* @NL80211_RRF_NO_HT40MINUS: channels can't be used in HT40- operation
* @NL80211_RRF_NO_HT40PLUS: channels can't be used in HT40+ operation
* @NL80211_RRF_NO_80MHZ: 80MHz operation not allowed
@ -2847,7 +2850,7 @@ enum nl80211_reg_rule_flags {
NL80211_RRF_NO_IR = 1<<7,
__NL80211_RRF_NO_IBSS = 1<<8,
NL80211_RRF_AUTO_BW = 1<<11,
NL80211_RRF_GO_CONCURRENT = 1<<12,
NL80211_RRF_IR_CONCURRENT = 1<<12,
NL80211_RRF_NO_HT40MINUS = 1<<13,
NL80211_RRF_NO_HT40PLUS = 1<<14,
NL80211_RRF_NO_80MHZ = 1<<15,
@ -2859,6 +2862,7 @@ enum nl80211_reg_rule_flags {
#define NL80211_RRF_NO_IR NL80211_RRF_NO_IR
#define NL80211_RRF_NO_HT40 (NL80211_RRF_NO_HT40MINUS |\
NL80211_RRF_NO_HT40PLUS)
#define NL80211_RRF_GO_CONCURRENT NL80211_RRF_IR_CONCURRENT
/* For backport compatibility with older userspace */
#define NL80211_RRF_NO_IR_ALL (NL80211_RRF_NO_IR | __NL80211_RRF_NO_IBSS)

38
net/wireless/chan.c
View File

@ -698,19 +698,20 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
EXPORT_SYMBOL(cfg80211_chandef_usable);
/*
* For GO only, check if the channel can be used under permissive conditions
* mandated by the some regulatory bodies, i.e., the channel is marked with
* IEEE80211_CHAN_GO_CONCURRENT and there is an additional station interface
* Check if the channel can be used under permissive conditions mandated by
* some regulatory bodies, i.e., the channel is marked with
* IEEE80211_CHAN_IR_CONCURRENT and there is an additional station interface
* associated to an AP on the same channel or on the same UNII band
* (assuming that the AP is an authorized master).
* In addition allow the GO to operate on a channel on which indoor operation is
* In addition allow operation on a channel on which indoor operation is
* allowed, iff we are currently operating in an indoor environment.
*/
static bool cfg80211_go_permissive_chan(struct cfg80211_registered_device *rdev,
static bool cfg80211_ir_permissive_chan(struct wiphy *wiphy,
enum nl80211_iftype iftype,
struct ieee80211_channel *chan)
{
struct wireless_dev *wdev;
struct wiphy *wiphy = wiphy_idx_to_wiphy(rdev->wiphy_idx);
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
ASSERT_RTNL();
@ -718,16 +719,22 @@ static bool cfg80211_go_permissive_chan(struct cfg80211_registered_device *rdev,
!(wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR))
return false;
/* only valid for GO and TDLS off-channel (station/p2p-CL) */
if (iftype != NL80211_IFTYPE_P2P_GO &&
iftype != NL80211_IFTYPE_STATION &&
iftype != NL80211_IFTYPE_P2P_CLIENT)
return false;
if (regulatory_indoor_allowed() &&
(chan->flags & IEEE80211_CHAN_INDOOR_ONLY))
return true;
if (!(chan->flags & IEEE80211_CHAN_GO_CONCURRENT))
if (!(chan->flags & IEEE80211_CHAN_IR_CONCURRENT))
return false;
/*
* Generally, it is possible to rely on another device/driver to allow
* the GO concurrent relaxation, however, since the device can further
* the IR concurrent relaxation, however, since the device can further
* enforce the relaxation (by doing a similar verifications as this),
* and thus fail the GO instantiation, consider only the interfaces of
* the current registered device.
@ -748,7 +755,8 @@ static bool cfg80211_go_permissive_chan(struct cfg80211_registered_device *rdev,
* GO_CONCURRENT is disconnected now. But then we must make sure
* we're not outdoor on an indoor-only channel.
*/
if (wdev->iftype == NL80211_IFTYPE_P2P_GO &&
if (iftype == NL80211_IFTYPE_P2P_GO &&
wdev->iftype == NL80211_IFTYPE_P2P_GO &&
wdev->beacon_interval &&
!(chan->flags & IEEE80211_CHAN_INDOOR_ONLY))
other_chan = wdev->chandef.chan;
@ -793,7 +801,6 @@ bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
enum nl80211_iftype iftype)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
bool res;
u32 prohibited_flags = IEEE80211_CHAN_DISABLED |
IEEE80211_CHAN_RADAR;
@ -801,13 +808,12 @@ bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
trace_cfg80211_reg_can_beacon(wiphy, chandef, iftype);
/*
* Under certain conditions suggested by the some regulatory bodies
* a GO can operate on channels marked with IEEE80211_NO_IR
* so set this flag only if such relaxations are not enabled and
* the conditions are not met.
* Under certain conditions suggested by some regulatory bodies a
* GO/STA can IR on channels marked with IEEE80211_NO_IR. Set this flag
* only if such relaxations are not enabled and the conditions are not
* met.
*/
if (iftype != NL80211_IFTYPE_P2P_GO ||
!cfg80211_go_permissive_chan(rdev, chandef->chan))
if (!cfg80211_ir_permissive_chan(wiphy, iftype, chandef->chan))
prohibited_flags |= IEEE80211_CHAN_NO_IR;
if (cfg80211_chandef_dfs_required(wiphy, chandef, iftype) > 0 &&

4
net/wireless/nl80211.c
View File

@ -639,8 +639,8 @@ static int nl80211_msg_put_channel(struct sk_buff *msg,
if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))

4
net/wireless/reg.c
View File

@ -989,8 +989,8 @@ static u32 map_regdom_flags(u32 rd_flags)
channel_flags |= IEEE80211_CHAN_NO_OFDM;
if (rd_flags & NL80211_RRF_NO_OUTDOOR)
channel_flags |= IEEE80211_CHAN_INDOOR_ONLY;
if (rd_flags & NL80211_RRF_GO_CONCURRENT)
channel_flags |= IEEE80211_CHAN_GO_CONCURRENT;
if (rd_flags & NL80211_RRF_IR_CONCURRENT)
channel_flags |= IEEE80211_CHAN_IR_CONCURRENT;
if (rd_flags & NL80211_RRF_NO_HT40MINUS)
channel_flags |= IEEE80211_CHAN_NO_HT40MINUS;
if (rd_flags & NL80211_RRF_NO_HT40PLUS)