* [RFC] cfg80211: Allow self managed devices to update global regulatory
@ 2019-09-06 3:15 Sriram R
2019-09-06 7:44 ` Johannes Berg
0 siblings, 1 reply; 2+ messages in thread
From: Sriram R @ 2019-09-06 3:15 UTC (permalink / raw)
To: johannes; +Cc: linux-wireless, Sriram R
Currently, self managed drivers cannot update the global regulatory
using a regulatory hint from driver if the wiphy regd is already set
from other sources.
Due to this, when a regulatory hint is provided to cfg80211 from
self managed devices, the request gets ignored and global reg is
always at default, i.e World reg, DFS-UNSET.
Hence in such systems, the result of 'iw reg get' does not indicate a
valid global regd.
Hence, Allow setting the cfg80211 global regulatory when it is unset
and the requestor is a self managed device. At the same time, do not
propagate these hints to other devices in the system.
Signed-off-by: Sriram R <srirrama@codeaurora.org>
---
net/wireless/reg.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 646107a..86c4460 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -3550,6 +3550,20 @@ static int reg_set_rd_driver(const struct ieee80211_regdomain *rd,
if (!request_wiphy)
return -ENODEV;
+ /* Update cfg80211 regdomain only if it's unset, in case a hint
+ * is received from self managed wiphy. Ignore all other
+ * processing from self managed wiphy's. Return EALREADY to avoid
+ * updating other drivers.
+ */
+ if (request_wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) {
+ regd = get_cfg80211_regdom();
+
+ if (regd == cfg80211_world_regdom) {
+ reset_regdomains(false, rd);
+ }
+ return -EALREADY;
+ }
+
if (!driver_request->intersect) {
if (request_wiphy->regd)
return -EALREADY;
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [RFC] cfg80211: Allow self managed devices to update global regulatory
2019-09-06 3:15 [RFC] cfg80211: Allow self managed devices to update global regulatory Sriram R
@ 2019-09-06 7:44 ` Johannes Berg
0 siblings, 0 replies; 2+ messages in thread
From: Johannes Berg @ 2019-09-06 7:44 UTC (permalink / raw)
To: Sriram R; +Cc: linux-wireless
On Fri, 2019-09-06 at 08:45 +0530, Sriram R wrote:
> Currently, self managed drivers cannot update the global regulatory
> using a regulatory hint from driver if the wiphy regd is already set
> from other sources.
> Due to this, when a regulatory hint is provided to cfg80211 from
> self managed devices, the request gets ignored and global reg is
> always at default, i.e World reg, DFS-UNSET.
> Hence in such systems, the result of 'iw reg get' does not indicate a
> valid global regd.
Yeah, but ... if you have a self-managed PHY you should anyway use
iw phy0 reg get
instead of plain
iw reg get
so I'm not sure I understand?
johannes
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2019-09-06 7:44 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-09-06 3:15 [RFC] cfg80211: Allow self managed devices to update global regulatory Sriram R
2019-09-06 7:44 ` Johannes Berg
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).