On 2018-03-27 18:17, Johannes Berg wrote:
On Tue, 2018-03-27 at 14:12 +0530, Vasanthakumar Thiagarajan wrote:
- * @set_noack_map: Set the NoAck Map for the TIDs.
+ * @set_noack_map: Set the NoAck Map for the TIDs. When peer is not
%NULL NoAck
+ * map will be applied for that particular peer. When peer is %NULL
NoAck
+ * map will be applied for all the connected stations (except the
ones
+ * which already have per-peer TID map configured) on the netdev.
+ * Driver should return -ENOSPC when the it does not have room for
+ * additional entries for per-peer NoAck map.
I guess it should also set the default for new stations when the peer
is
not given? At least that's how mac80211 would behave now, afaict.
Sure. May be setting -1 as the default value when the per-peer NoAck
policy is not
set would work.
The question is how that interacts with having enough space - are you
sure this is a concern?
This will not be an issue at lest for ath10k. This is mainly for a
(new)driver
which implements the offload but has limitation in supporting more than
certain
number of peers. Perhaps we can remove it now and add it when such
driver is
available?
* @NL80211_CMD_SET_NOACK_MAP: sets a bitmap for the individual TIDs
whether
- * No Acknowledgement Policy should be applied.
+ * No Acknowledgement Policy should be applied. %NL80211_ATTR_MAC is
used
+ * to apply No Acknowledgement policy for a particular connected
station.
+ * Station specific NoAck policy configuration is valid only for
STA's
+ * current connection, i.e. the configuration will not be used when
the
+ * station connects back after disconnection/roaming.
+ * When user-space does not include %NL80211_ATTR_MAC, the No
+ * Acknowledgement Policy setting should be treated as per-netdev
+ * configuration.
Here you describe different semantics - i.e. you didn't describe the
"previous per-station settings are kept" part. I'm not sure that part
makes much sense anyhow?
Not sure I got this comment right. As mentioned in the doc, the previous
settings
would be reset upon reconnection of the station and any ndev wide
configuration
will be used. As mentioned above, additionally default value will be set
to the
station to mark no per-station configuration is given so far.
Vasanth
