kernel/linux.git/include/net/sch_generic.h, branch v3.16.50

net_sched: fix order of queue length updates in qdisc_replace()

2017-11-11T13:33:23+00:00

commit 68a66d149a8c78ec6720f268597302883e48e9fa upstream. This important to call qdisc_tree_reduce_backlog() after changing queue length. Parent qdisc should deactivate class in ->qlen_notify() called from qdisc_tree_reduce_backlog() but this happens only if qdisc->q.qlen in zero. Missed class deactivations leads to crashes/warnings at picking packets from empty qdisc and corrupting state at reactivating this class in future. Signed-off-by: Konstantin Khlebnikov Fixes: 86a7996cc8a0 ("net_sched: introduce qdisc_replace() helper") Acked-by: Cong Wang Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings

net_sched: update hierarchical backlog too

2016-08-22T21:38:15+00:00

commit 2ccccf5fb43ff62b2b96cc58d95fc0b3596516e4 upstream. When the bottom qdisc decides to, for example, drop some packet, it calls qdisc_tree_decrease_qlen() to update the queue length for all its ancestors, we need to update the backlog too to keep the stats on root qdisc accurate. Cc: Jamal Hadi Salim Acked-by: Jamal Hadi Salim Signed-off-by: Cong Wang Signed-off-by: David S. Miller [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings

net_sched: introduce qdisc_replace() helper

2016-08-22T21:38:15+00:00

commit 86a7996cc8a078793670d82ed97d5a99bb4e8496 upstream. Remove nearly duplicated code and prepare for the following patch. Cc: Jamal Hadi Salim Acked-by: Jamal Hadi Salim Signed-off-by: Cong Wang Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings

sched, cls: check if we could overwrite actions when changing a filter

2014-04-28T03:42:39+00:00

When actions are attached to a filter, they are a part of the filter itself, so when changing a filter we should allow to overwrite the actions inside as well. In my specific case, when I tried to _append_ a new action to an existing filter which already has an action, I got EEXIST since kernel refused to overwrite the existing one in kernel. This patch checks if we are changing the filter checking NLM_F_CREATE flag (Sigh, filters don't use NLM_F_REPLACE...) and then passes the boolean down to actions. This fixes the problem above. Cc: Jamal Hadi Salim Cc: David S. Miller Signed-off-by: Cong Wang Signed-off-by: Cong Wang Signed-off-by: Jamal Hadi Salim Signed-off-by: David S. Miller

net_sched: add struct net pointer to tcf_proto_ops->dump

2014-01-13T19:50:14+00:00

It will be needed by the next patch. Cc: Jamal Hadi Salim Cc: David S. Miller Signed-off-by: Cong Wang Signed-off-by: Jamal Hadi Salim Signed-off-by: David S. Miller

net_sched: convert tcf_proto_ops to use struct list_head

2013-12-18T17:52:08+00:00

We don't need to maintain our own singly linked list code. Cc: Jamal Hadi Salim Cc: David S. Miller Signed-off-by: Cong Wang Signed-off-by: Jamal Hadi Salim Signed-off-by: David S. Miller

net_sched: add u64 rate to psched_ratecfg_precompute()

2013-09-20T18:41:02+00:00

Add an extra u64 rate parameter to psched_ratecfg_precompute() so that some qdisc can opt-in for 64bit rates in the future, to overcome the ~34 Gbits limit. psched_ratecfg_getrate() reports a legacy structure to tc utility, so if actual rate is above the 32bit rate field, cap it to the 34Gbit limit. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

qdisc: make args to qdisc_create_default const

2013-08-31T22:09:45+00:00

Fixes warnings introduced by the qdisc default patch. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

qdisc: allow setting default queuing discipline

2013-08-31T04:32:32+00:00

By default, the pfifo_fast queue discipline has been used by default for all devices. But we have better choices now. This patch allow setting the default queueing discipline with sysctl. This allows easy use of better queueing disciplines on all devices without having to use tc qdisc scripts. It is intended to allow an easy path for distributions to make fq_codel or sfq the default qdisc. This patch also makes pfifo_fast more of a first class qdisc, since it is now possible to manually override the default and explicitly use pfifo_fast. The behavior for systems who do not use the sysctl is unchanged, they still get pfifo_fast Also removes leftover random # in sysctl net core. Signed-off-by: Stephen Hemminger Acked-by: Eric Dumazet Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2013-08-16T22:37:26+00:00