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wifi: cfg80211/mac80211: Add support to get radio index

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Currently, per-radio attributes are set on per-phy basis, i.e., all the
radios present in a wiphy will take attributes values sent from user. But
each radio in a wiphy can get different values from userspace based on
its requirement.

To extend support to set per-radio attributes, add support to get radio
index from userspace. Add an NL attribute - NL80211_ATTR_WIPHY_RADIO_INDEX,
to get user specified radio index for which attributes should be changed.
Pass this to individual drivers, so that the drivers can use this radio
index to change per-radio attributes when necessary. Currently, per-radio
attributes identified are:
NL80211_ATTR_WIPHY_TX_POWER_LEVEL
NL80211_ATTR_WIPHY_ANTENNA_TX
NL80211_ATTR_WIPHY_ANTENNA_RX
NL80211_ATTR_WIPHY_RETRY_SHORT
NL80211_ATTR_WIPHY_RETRY_LONG
NL80211_ATTR_WIPHY_FRAG_THRESHOLD
NL80211_ATTR_WIPHY_RTS_THRESHOLD
NL80211_ATTR_WIPHY_COVERAGE_CLASS
NL80211_ATTR_TXQ_LIMIT
NL80211_ATTR_TXQ_MEMORY_LIMIT
NL80211_ATTR_TXQ_QUANTUM

By default, the radio index is set to -1. This means the attribute should
be treated as a global configuration. If the user has not specified any
index, then the radio index passed to individual drivers would be -1. This
would indicate that the attribute applies to all radios in that wiphy.

Signed-off-by: Roopni Devanathan <quic_rdevanat@quicinc.com>
Link: https://patch.msgid.link/20250615082312.619639-2-quic_rdevanat@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Roopni Devanathan
2025-06-15 13:53:09 +05:30
committed by Johannes Berg
parent 4cb1ce7e25
commit b74947b4f6
93 changed files with 525 additions and 296 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/uapi/linux/nl80211.h
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@@ -2907,6 +2907,14 @@ enum nl80211_commands {
* APs Support". Drivers may set additional flags that they support
* in the kernel or device.
*
* @NL80211_ATTR_WIPHY_RADIO_INDEX: (int) Integer attribute denoting the index
* of the radio in interest. Internally a value of -1 is used to
* indicate that the radio id is not given in user-space. This means
* that all the attributes are applicable to all the radios. If there is
* a radio index provided in user-space, the attributes will be
* applicable to that specific radio only. If the radio id is greater
* thank the number of radios, error denoting invalid value is returned.
*
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -3464,6 +3472,8 @@ enum nl80211_attrs {
NL80211_ATTR_ASSOC_MLD_EXT_CAPA_OPS,
NL80211_ATTR_WIPHY_RADIO_INDEX,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,