linux-toradex.git/net/sched/sch_api.c, branch v3.0.7

pkt_sched: Kill set but unused variable 'protocol' in tc_classify()

2011-05-19T22:32:55+00:00

I checked the history and this has been like this since the
beginning of time.

Signed-off-by: David S. Miller

sched: protocol only needed when CONFIG_NET_CLS_ACT is enabled

2011-02-25T22:00:23+00:00

Signed-off-by: Hagen Paul Pfeifer 
Signed-off-by: David S. Miller

net_sched: RCU conversion of stab

2011-01-21T00:59:32+00:00

This patch converts stab qdisc management to RCU, so that we can perform
the qdisc_calculate_pkt_len() call before getting qdisc lock.

This shortens the lock's held time in __dev_xmit_skb().

This permits more qdiscs to get TCQ_F_CAN_BYPASS status, avoiding lot of
cache misses and so reducing latencies.

Signed-off-by: Eric Dumazet 
CC: Patrick McHardy 
CC: Jesper Dangaard Brouer 
CC: Jarek Poplawski 
CC: Jamal Hadi Salim 
CC: Stephen Hemminger 
Signed-off-by: David S. Miller

net_sched: move TCQ_F_THROTTLED flag

2011-01-21T00:59:32+00:00

In commit 371121057607e (net: QDISC_STATE_RUNNING dont need atomic bit
ops) I moved QDISC_STATE_RUNNING flag to __state container, located in
the cache line containing qdisc lock and often dirtied fields.

I now move TCQ_F_THROTTLED bit too, so that we let first cache line read
mostly, and shared by all cpus. This should speedup HTB/CBQ for example.

Not using test_bit()/__clear_bit()/__test_and_set_bit allows to use an
"unsigned int" for __state container, reducing by 8 bytes Qdisc size.

Introduce helpers to hide implementation details.

Signed-off-by: Eric Dumazet 
CC: Patrick McHardy 
CC: Jesper Dangaard Brouer 
CC: Jarek Poplawski 
CC: Jamal Hadi Salim 
CC: Stephen Hemminger 
Signed-off-by: David S. Miller

net_sched: cleanups

2011-01-20T07:31:12+00:00

Cleanup net/sched code to current CodingStyle and practices.

Reduce inline abuse

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

net: dynamic ingress_queue allocation

2010-10-05T07:23:44+00:00

ingress being not used very much, and net_device->ingress_queue being
quite a big object (128 or 256 bytes), use a dynamic allocation if
needed (tc qdisc add dev eth0 ingress ...)

dev_ingress_queue(dev) helper should be used only with RTNL taken.

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

net: rename netdev rx_queue to ingress_queue

2010-09-29T20:25:53+00:00

There is some confusion with rx_queue name after RPS, and net drivers
private rx_queue fields.

I suggest to rename "struct net_device"->rx_queue to ingress_queue.

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

net/sched: remove unneeded NULL check

2010-08-18T21:24:51+00:00

There is no need to check "s".  nla_data() doesn't return NULL.  Also we
already dereferenced "s" at this point so it would have oopsed ealier if
it were NULL.

Signed-off-by: Dan Carpenter 
Signed-off-by: David S. Miller

pkt_sched: Check .walk and .leaf class handlers

2010-08-11T08:37:00+00:00

Require qdisc class ops .walk and .leaf for classful qdisc in
register_qdisc(). The checks could be done later insted, but these
ops are really needed and used by most of classful qdiscs.

Signed-off-by: Jarek Poplawski 
Signed-off-by: David S. Miller

pkt_sched: Add some basic qdisc class ops verification. Was: [PATCH] sfq: add dummy bind/unbind handles

2010-08-10T08:39:14+00:00

Verify in register_qdisc() some basic qdisc class handlers are present.

Signed-off-by: Jarek Poplawski 
Signed-off-by: David S. Miller