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net: sched: drop all special handling of tx_queue_len == 0

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Those were all workarounds for the formerly double meaning of
tx_queue_len, which broke scheduling algorithms if untreated.

Now that all in-tree drivers have been converted away from setting
tx_queue_len = 0, it should be safe to drop these workarounds for
categorically broken setups.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Phil Sutter
2015-08-18 10:30:49 +02:00
committed by David S. Miller
parent 906470c19d
commit 348e3435cb
5 changed files with 9 additions and 17 deletions
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8
net/sched/sch_gred.c
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@@ -512,11 +512,9 @@ static int gred_init(struct Qdisc *sch, struct nlattr *opt)
if (tb[TCA_GRED_LIMIT])
sch->limit = nla_get_u32(tb[TCA_GRED_LIMIT]);
else {
u32 qlen = qdisc_dev(sch)->tx_queue_len ? : 1;
sch->limit = qlen * psched_mtu(qdisc_dev(sch));
}
else
sch->limit = qdisc_dev(sch)->tx_queue_len
* psched_mtu(qdisc_dev(sch));
return gred_change_table_def(sch, tb[TCA_GRED_DPS]);
}