From 95dc19299f741c986227ec33e23cbf9b3321f812 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 5 Dec 2013 11:12:02 -0800 Subject: [PATCH] pkt_sched: give visibility to mq slave qdiscs Commit 6da7c8fcbcbd ("qdisc: allow setting default queuing discipline") added the ability to change default qdisc from pfifo_fast to say fq But as most modern ethernet devices are multiqueue, we cant really see all the statistics from "tc -s qdisc show", as the default root qdisc is mq. This patch adds the calls to qdisc_list_add() to mq and mqprio Signed-off-by: Eric Dumazet Cc: Stephen Hemminger Signed-off-by: David S. Miller --- include/net/pkt_sched.h | 1 + net/sched/sch_api.c | 3 ++- net/sched/sch_mq.c | 13 +++++++++---- net/sched/sch_mqprio.c | 10 ++++++---- 4 files changed, 18 insertions(+), 9 deletions(-) diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 59ec3cd15d68..891d80d2c4d2 100644 --- a/include/net/pkt_sched.h +++ b/include/net/pkt_sched.h @@ -88,6 +88,7 @@ int unregister_qdisc(struct Qdisc_ops *qops); void qdisc_get_default(char *id, size_t len); int qdisc_set_default(const char *id); +void qdisc_list_add(struct Qdisc *q); void qdisc_list_del(struct Qdisc *q); struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle); struct Qdisc *qdisc_lookup_class(struct net_device *dev, u32 handle); diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index cd81505662b8..547b4a88ae2a 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -271,11 +271,12 @@ static struct Qdisc *qdisc_match_from_root(struct Qdisc *root, u32 handle) return NULL; } -static void qdisc_list_add(struct Qdisc *q) +void qdisc_list_add(struct Qdisc *q) { if ((q->parent != TC_H_ROOT) && !(q->flags & TCQ_F_INGRESS)) list_add_tail(&q->list, &qdisc_dev(q)->qdisc->list); } +EXPORT_SYMBOL(qdisc_list_add); void qdisc_list_del(struct Qdisc *q) { diff --git a/net/sched/sch_mq.c b/net/sched/sch_mq.c index 2e56185736d6..a8b2864a696b 100644 --- a/net/sched/sch_mq.c +++ b/net/sched/sch_mq.c @@ -78,14 +78,19 @@ static void mq_attach(struct Qdisc *sch) { struct net_device *dev = qdisc_dev(sch); struct mq_sched *priv = qdisc_priv(sch); - struct Qdisc *qdisc; + struct Qdisc *qdisc, *old; unsigned int ntx; for (ntx = 0; ntx < dev->num_tx_queues; ntx++) { qdisc = priv->qdiscs[ntx]; - qdisc = dev_graft_qdisc(qdisc->dev_queue, qdisc); - if (qdisc) - qdisc_destroy(qdisc); + old = dev_graft_qdisc(qdisc->dev_queue, qdisc); + if (old) + qdisc_destroy(old); +#ifdef CONFIG_NET_SCHED + if (ntx < dev->real_num_tx_queues) + qdisc_list_add(qdisc); +#endif + } kfree(priv->qdiscs); priv->qdiscs = NULL; diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c index d44c868cb537..6749e2f540d0 100644 --- a/net/sched/sch_mqprio.c +++ b/net/sched/sch_mqprio.c @@ -167,15 +167,17 @@ static void mqprio_attach(struct Qdisc *sch) { struct net_device *dev = qdisc_dev(sch); struct mqprio_sched *priv = qdisc_priv(sch); - struct Qdisc *qdisc; + struct Qdisc *qdisc, *old; unsigned int ntx; /* Attach underlying qdisc */ for (ntx = 0; ntx < dev->num_tx_queues; ntx++) { qdisc = priv->qdiscs[ntx]; - qdisc = dev_graft_qdisc(qdisc->dev_queue, qdisc); - if (qdisc) - qdisc_destroy(qdisc); + old = dev_graft_qdisc(qdisc->dev_queue, qdisc); + if (old) + qdisc_destroy(old); + if (ntx < dev->real_num_tx_queues) + qdisc_list_add(qdisc); } kfree(priv->qdiscs); priv->qdiscs = NULL;