batman-adv: ELP - use wifi tx bitrate as fallback throughput
Commit Message
From: René Treffer <treffer@measite.de>
Some wifi drivers (e.g. ath10k) provide per-station rx/tx values but no
estimated throughput. Setting a better estimate than the default 1 MBit
makes these devices work well with B.A.T.M.A.N. V.
Signed-off-by: René Treffer <treffer@measite.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
net/batman-adv/bat_v_elp.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
Comments
On Tuesday, 26 November 2019 10:27:38 HKT Marek Lindner wrote:
> Some wifi drivers (e.g. ath10k) provide per-station rx/tx values but no
> estimated throughput. Setting a better estimate than the default 1 MBit
> makes these devices work well with B.A.T.M.A.N. V.
I have been testing this patch for 2-3 months in production setups and while
the approach isn't perfect, it produced acceptable results.
Cheers,
Marek
@@ -107,10 +107,15 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh)
}
if (ret)
goto default_throughput;
- if (!(sinfo.filled & BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT)))
- goto default_throughput;
- return sinfo.expected_throughput / 100;
+ if (sinfo.filled & BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT))
+ return sinfo.expected_throughput / 100;
+
+ /* try to estimate en expected throughput based on reported tx rates */
+ if (sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE))
+ return cfg80211_calculate_bitrate(&sinfo.txrate) / 3;
+
+ goto default_throughput;
}
/* if not a wifi interface, check if this device provides data via