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authorJohannes Berg <johannes.berg@intel.com>2020-01-15 12:25:50 +0100
committerJohannes Berg <johannes.berg@intel.com>2020-02-07 11:32:27 +0100
commitf2b18baca9539c6a3116d48b70972c7a2ba5d766 (patch)
tree35a61cd2351716f3c4c5301a4bb95c295a0072ac /include/net/mac80211.h
parentnet: dsa: b53: Always use dev->vlan_enabled in b53_configure_vlan() (diff)
downloadlinux-dev-f2b18baca9539c6a3116d48b70972c7a2ba5d766.tar.xz
linux-dev-f2b18baca9539c6a3116d48b70972c7a2ba5d766.zip
mac80211: use more bits for ack_frame_id
It turns out that this wasn't a good idea, I hit a test failure in hwsim due to this. That particular failure was easily worked around, but it raised questions: if an AP needs to, for example, send action frames to each connected station, the current limit is nowhere near enough (especially if those stations are sleeping and the frames are queued for a while.) Shuffle around some bits to make more room for ack_frame_id to allow up to 8192 queued up frames, that's enough for queueing 4 frames to each connected station, even at the maximum of 2007 stations on a single AP. We take the bits from band (which currently only 2 but I leave 3 in case we add another band) and from the hw_queue, which can only need 4 since it has a limit of 16 queues. Fixes: 6912daed05e1 ("mac80211: Shrink the size of ack_frame_id to make room for tx_time_est") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/r/20200115122549.b9a4ef9f4980.Ied52ed90150220b83a280009c590b65d125d087c@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to '')
-rw-r--r--include/net/mac80211.h11
1 files changed, 5 insertions, 6 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index aa145808e57a..77e6b5a83b06 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1004,12 +1004,11 @@ ieee80211_rate_get_vht_nss(const struct ieee80211_tx_rate *rate)
struct ieee80211_tx_info {
/* common information */
u32 flags;
- u8 band;
-
- u8 hw_queue;
-
- u16 ack_frame_id:6;
- u16 tx_time_est:10;
+ u32 band:3,
+ ack_frame_id:13,
+ hw_queue:4,
+ tx_time_est:10;
+ /* 2 free bits */
union {
struct {