diff options
| author | Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be> | 2020-11-04 10:18:22 +0400 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2020-11-06 11:03:43 +0100 |
| commit | 70c5e40ca959ad48e932a343116a76dd78859e5e (patch) | |
| tree | eac3472bf9788c06b5fc057f6c7b89490bdd1492 | |
| parent | 527d675969a1dff17baa270d4447ac1c87058299 (diff) | |
| download | linux-70c5e40ca959ad48e932a343116a76dd78859e5e.tar.bz2 | |
mac80211: assure that certain drivers adhere to DONT_REORDER flag
Some drivers use skb->priority to determine on which queue to send
a frame. An example is mt76x2u (this was tested on an AWUS036ACM).
This means these drivers currently do not adhere to the DONT_REORDER
flag. To fix this, we do not set skb->priority based on the QoS TID
of injected frames when the DONT_REORDER flag is set.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201104061823.197407-5-Mathy.Vanhoef@kuleuven.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| -rw-r--r-- | net/mac80211/tx.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 8bf80b6757dc..1651cf7b2500 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -2271,8 +2271,13 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, payload[7]); } - /* Initialize skb->priority for QoS frames */ - if (ieee80211_is_data_qos(hdr->frame_control)) { + /* Initialize skb->priority for QoS frames. If the DONT_REORDER flag + * is set, stick to the default value for skb->priority to assure + * frames injected with this flag are not reordered relative to each + * other. + */ + if (ieee80211_is_data_qos(hdr->frame_control) && + !(info->control.flags & IEEE80211_TX_CTRL_DONT_REORDER)) { u8 *p = ieee80211_get_qos_ctl(hdr); skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK; } |