VHT uses peer AID in the PARTIAL_AID field in TDLS frames. The current design for TDLS is to first add a dummy STA entry before completing TDLS Setup and then update information on this STA entry based on what was received from the peer during the setup exchange. In theory, this could use NL80211_ATTR_STA_AID to set the peer AID just like this is used in AP mode to set the AID of an association station. However, existing cfg80211 validation rules prevent this attribute from being used with set_station operation. To avoid interoperability issues between different kernel and user space version combinations, introduce a new nl80211 attribute for the purpose of setting TDLS peer AID. This attribute can be used in both the new_station and set_station operations. It is not supposed to be allowed to change the AID value during the lifetime of the STA entry, but that validation is left for drivers to do in the change_station callback.
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| @@ -1431,6 +1431,11 @@ enum nl80211_commands { · 1430 unmodified lines | ||
| 1431 | 1431 | * @NL80211_ATTR_MAX_CRIT_PROT_DURATION: duration in milliseconds in which |
| 1432 | 1432 | * the connection should have increased reliability (u16). |
| 1433 | 1433 | * |
| 1434 | + * @NL80211_ATTR_PEER_AID: Association ID for the peer TDLS station (u16). | |
| 1435 | + * This is similar to @NL80211_ATTR_STA_AID but with a difference of being | |
| 1436 | + * allowed to be used with the first @NL80211_CMD_SET_STATION command to | |
| 1437 | + * update a TDLS peer STA entry. | |
| 1438 | + * | |
| 1434 | 1439 | * @NL80211_ATTR_MAX: highest attribute number currently defined |
| 1435 | 1440 | * @__NL80211_ATTR_AFTER_LAST: internal use |
| 1436 | 1441 | */ |
| @@ -1729,6 +1734,8 @@ enum nl80211_attrs { · 292 unmodified lines | ||
| 1729 | 1734 | NL80211_ATTR_CRIT_PROT_ID, |
| 1730 | 1735 | NL80211_ATTR_MAX_CRIT_PROT_DURATION, |
| 1731 | 1736 | |
| 1737 | + NL80211_ATTR_PEER_AID, | |
| 1738 | + | |
| 1732 | 1739 | /* add attributes here, update the policy in nl80211.c */ |
| 1733 | 1740 | |
| 1734 | 1741 | __NL80211_ATTR_AFTER_LAST, |