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Davide Caratti 3a62fed2fd net/sched: fq_pie: re-factor fix for fq_pie endless loop 
the patch that fixed an endless loop in_fq_pie_init() was not considering
that 65535 is a valid class id. The correct bugfix for this infinite loop
is to change 'idx' to become an u32, like Colin proposed in the past [1].

Fix this as follows:
 - restore 65536 as maximum possible values of 'flows_cnt'
 - use u32 'idx' when iterating on 'q->flows'
 - fix the TDC selftest

This reverts commit bb2f930d6d.

[1] https://lore.kernel.org/netdev/20210407163808.499027-1-colin.king@canonical.com/

CC: Colin Ian King <colin.king@canonical.com>
CC: stable@vger.kernel.org
Fixes: bb2f930d6d ("net/sched: fix infinite loop in sch_fq_pie")
Fixes: ec97ecf1eb ("net: sched: add Flow Queue PIE packet scheduler")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-05-23 17:16:09 -07:00
..
ets.json selftests: qdiscs: Add test coverage for ETS Qdisc 2019-12-18 13:32:30 -08:00
fifo.json tc-testing: use dedicated DUMMY interface name for dummy dev 2019-08-19 18:19:47 -07:00
fq_pie.json net/sched: fq_pie: re-factor fix for fq_pie endless loop 2021-05-23 17:16:09 -07:00
ingress.json tc-testing: use dedicated DUMMY interface name for dummy dev 2019-08-19 18:19:47 -07:00
prio.json tc-testing: use dedicated DUMMY interface name for dummy dev 2019-08-19 18:19:47 -07:00
red.json selftests: qdiscs: RED: Add nodrop tests 2020-03-14 21:03:46 -07:00