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cfg80211: support multicast RX registration

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For DPP, there's a need to receive multicast action frames,
but many drivers need a special filter configuration for this.

Support announcing from userspace in the management registration
that multicast RX is required, with an extended feature flag if
the driver handles this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Link: https://lore.kernel.org/r/20200417124013.c46238801048.Ib041d437ce0bff28a0c6d5dc915f68f1d8591002@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2020-04-17 12:40:15 +02:00
parent 6cd536fe62
commit 9dba48a6ec
5 changed files with 59 additions and 9 deletions
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13
include/uapi/linux/nl80211.h
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@@ -687,6 +687,10 @@
* four bytes for vendor frames including the OUI. The registration
* cannot be dropped, but is removed automatically when the netlink
* socket is closed. Multiple registrations can be made.
* The %NL80211_ATTR_RECEIVE_MULTICAST flag attribute can be given if
* %NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS is available, in which
* case the registration can also be modified to include/exclude the
* flag, rather than requiring unregistration to change it.
* @NL80211_CMD_REGISTER_ACTION: Alias for @NL80211_CMD_REGISTER_FRAME for
* backward compatibility
* @NL80211_CMD_FRAME: Management frame TX request and RX notification. This
@@ -2477,6 +2481,9 @@ enum nl80211_commands {
* no roaming occurs between the reauth threshold and PMK expiration,
* disassociation is still forced.
*
* @NL80211_ATTR_RECEIVE_MULTICAST: multicast flag for the
* %NL80211_CMD_REGISTER_FRAME command, see the description there.
*
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2952,6 +2959,8 @@ enum nl80211_attrs {
NL80211_ATTR_PMK_LIFETIME,
NL80211_ATTR_PMK_REAUTH_THRESHOLD,
NL80211_ATTR_RECEIVE_MULTICAST,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -5691,6 +5700,9 @@ enum nl80211_feature_flags {
* @NL80211_EXT_FEATURE_DEL_IBSS_STA: The driver supports removing stations
* in IBSS mode, essentially by dropping their state.
*
* @NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS: management frame registrations
* are possible for multicast frames and those will be reported properly.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@@ -5742,6 +5754,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH,
NL80211_EXT_FEATURE_PROTECTED_TWT,
NL80211_EXT_FEATURE_DEL_IBSS_STA,
NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,