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| author | Jiri Pirko <jiri@mellanox.com> | 2017-11-27 18:37:21 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-28 16:04:26 -0500 |
| commit | d51aae68b142f48232257e96ce317db25445418d (patch) | |
| tree | 137141a72c691f4a5a286fa263473acd1715c2c4 /net/sched/sch_cbq.c | |
| parent | 0195a21079c077abfb475a56830b06b37424982a (diff) | |
| download | linux-stable-d51aae68b142f48232257e96ce317db25445418d.tar.gz linux-stable-d51aae68b142f48232257e96ce317db25445418d.tar.bz2 linux-stable-d51aae68b142f48232257e96ce317db25445418d.zip | |
net: sched: cbq: create block for q->link.block
q->link.block is not initialized, that leads to EINVAL when one tries to
add filter there. So initialize it properly.
This can be reproduced by:
$ tc qdisc add dev eth0 root handle 1: cbq avpkt 1000 rate 1000Mbit bandwidth 1000Mbit
$ tc filter add dev eth0 parent 1: protocol ip prio 100 u32 match ip protocol 0 0x00 flowid 1:1
Reported-by: Jaroslav Aster <jaster@redhat.com>
Reported-by: Ivan Vecera <ivecera@redhat.com>
Fixes: 6529eaba33f0 ("net: sched: introduce tcf block infractructure")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Reviewed-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_cbq.c')
| -rw-r--r-- | net/sched/sch_cbq.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index 6361be7881f1..525eb3a6d625 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -1158,9 +1158,13 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt) if ((q->link.R_tab = qdisc_get_rtab(r, tb[TCA_CBQ_RTAB])) == NULL) return -EINVAL; + err = tcf_block_get(&q->link.block, &q->link.filter_list, sch); + if (err) + goto put_rtab; + err = qdisc_class_hash_init(&q->clhash); if (err < 0) - goto put_rtab; + goto put_block; q->link.sibling = &q->link; q->link.common.classid = sch->handle; @@ -1194,6 +1198,9 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt) cbq_addprio(q, &q->link); return 0; +put_block: + tcf_block_put(q->link.block); + put_rtab: qdisc_put_rtab(q->link.R_tab); return err; |