linux-toradex.git/net/sched/sch_sfb.c, branch v4.17

net: sch: api: add extack support in qdisc_create_dflt

2017-12-21T17:32:51+00:00

This patch adds extack support for the function qdisc_create_dflt which is
a common used function in the tc subsystem. Callers which are interested
in the receiving error can assign extack to get a more detailed
information why qdisc_create_dflt failed. The function qdisc_create_dflt
will also call an init callback which can fail by any per-qdisc specific
handling.

Cc: David Ahern 
Acked-by: Jamal Hadi Salim 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

net: sch: api: add extack support in tcf_block_get

2017-12-21T17:32:51+00:00

This patch adds extack support for the function tcf_block_get which is
a common used function in the tc subsystem. Callers which are interested
in the receiving error can assign extack to get a more detailed
information why tcf_block_get failed.

Cc: David Ahern 
Acked-by: Jamal Hadi Salim 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

net: sched: sch: add extack for graft callback

2017-12-21T17:32:50+00:00

This patch adds extack support for graft callback to prepare per-qdisc
specific changes for extack.

Cc: David Ahern 
Acked-by: Jamal Hadi Salim 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

net: sched: sch: add extack for block callback

2017-12-21T17:32:50+00:00

This patch adds extack support for block callback to prepare per-qdisc
specific changes for extack.

Cc: David Ahern 
Acked-by: Jamal Hadi Salim 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

net: sched: sch: add extack to change class

2017-12-21T17:32:50+00:00

This patch adds extack support for class change callback api. This prepares
to handle extack support inside each specific class implementation.

Cc: David Ahern 
Acked-by: Jamal Hadi Salim 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

net: sched: sch: add extack for change qdisc ops

2017-12-21T17:32:50+00:00

This patch adds extack support for change callback for qdisc ops
structtur to prepare per-qdisc specific changes for extack.

Cc: David Ahern 
Acked-by: Jamal Hadi Salim 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

net: sched: sch: add extack for init callback

2017-12-21T17:32:50+00:00

This patch adds extack support for init callback to prepare per-qdisc
specific changes for extack.

Cc: David Ahern 
Acked-by: Jamal Hadi Salim 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

net: sched: mark expected switch fall-throughs

2017-10-22T01:07:08+00:00

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Signed-off-by: Gustavo A. R. Silva 
Signed-off-by: David S. Miller

net: sched: store Qdisc pointer in struct block

2017-10-16T20:00:40+00:00

Prepare for removal of tp->q and store Qdisc pointer in the block
structure.

Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller

net_sched: remove tc class reference counting

2017-08-26T00:19:10+00:00

For TC classes, their ->get() and ->put() are always paired, and the
reference counting is completely useless, because:

1) For class modification and dumping paths, we already hold RTNL lock,
   so all of these ->get(),->change(),->put() are atomic.

2) For filter bindiing/unbinding, we use other reference counter than
   this one, and they should have RTNL lock too.

3) For ->qlen_notify(), it is special because it is called on ->enqueue()
   path, but we already hold qdisc tree lock there, and we hold this
   tree lock when graft or delete the class too, so it should not be gone
   or changed until we release the tree lock.

Therefore, this patch removes ->get() and ->put(), but:

1) Adds a new ->find() to find the pointer to a class by classid, no
   refcnt.

2) Move the original class destroy upon the last refcnt into ->delete(),
   right after releasing tree lock. This is fine because the class is
   already removed from hash when holding the lock.

For those who also use ->put() as ->unbind(), just rename them to reflect
this change.

Cc: Jamal Hadi Salim 
Signed-off-by: Cong Wang 
Acked-by: Jiri Pirko 
Acked-by: Jamal Hadi Salim 
Signed-off-by: David S. Miller