mac80211: disable fq until performance issues have been found and fixed
authorFelix Fietkau <nbd@nbd.name>
Tue, 12 Jul 2016 10:32:54 +0000 (12:32 +0200)
committerFelix Fietkau <nbd@nbd.name>
Tue, 12 Jul 2016 13:05:26 +0000 (15:05 +0200)
Signed-off-by: Felix Fietkau <nbd@nbd.name>
package/kernel/mac80211/patches/220-fq_disable_hack.patch [new file with mode: 0644]

diff --git a/package/kernel/mac80211/patches/220-fq_disable_hack.patch b/package/kernel/mac80211/patches/220-fq_disable_hack.patch
new file mode 100644 (file)
index 0000000..c5721b5
--- /dev/null
@@ -0,0 +1,15 @@
+mac80211 fq has been found to cause a regression in multi-stream TCP
+performance. Disable it until the cause has been found and fixed
+
+--- a/include/net/fq_impl.h
++++ b/include/net/fq_impl.h
+@@ -104,6 +104,9 @@ static struct fq_flow *fq_flow_classify(
+       lockdep_assert_held(&fq->lock);
++      /* HACK: disable fq for now until TCP issues are fixed */
++      return get_default_func(fq, tin, idx, skb);
++
+       hash = skb_get_hash_perturb(skb, fq->perturbation);
+       idx = reciprocal_scale(hash, fq->flows_cnt);
+       flow = &fq->flows[idx];