linux-toradex.git/net/sched/sch_tbf.c, branch v4.0.7

net: sched: avoid costly atomic operation in fq_dequeue()

2014-10-06T04:55:10+00:00

Standard qdisc API to setup a timer implies an atomic operation on every
packet dequeue : qdisc_unthrottled()

It turns out this is not really needed for FQ, as FQ has no concept of
global qdisc throttling, being a qdisc handling many different flows,
some of them can be throttled, while others are not.

Fix is straightforward : add a 'bool throttle' to
qdisc_watchdog_schedule_ns(), and remove calls to qdisc_unthrottled()
in sch_fq.

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

net: sched: implement qstat helper routines

2014-09-30T05:02:26+00:00

This adds helpers to manipulate qstats logic and replaces locations
that touch the counters directly. This simplifies future patches
to push qstats onto per cpu counters.

Signed-off-by: John Fastabend 
Signed-off-by: David S. Miller

net: use ktime_get_ns() and ktime_get_real_ns() helpers

2014-08-23T02:57:23+00:00

ktime_get_ns() replaces ktime_to_ns(ktime_get())

ktime_get_real_ns() replaces ktime_to_ns(ktime_get_real())

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

net_sched: return nla_nest_end() instead of skb->len

2014-03-13T19:39:20+00:00

nla_nest_end() already has return skb->len, so replace
return skb->len with return nla_nest_end instead().

Signed-off-by: Yang Yingliang 
Signed-off-by: David S. Miller

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

2014-03-06T01:32:02+00:00

Conflicts:
	drivers/net/wireless/ath/ath9k/recv.c
	drivers/net/wireless/mwifiex/pcie.c
	net/ipv6/sit.c

The SIT driver conflict consists of a bug fix being done by hand
in 'net' (missing u64_stats_init()) whilst in 'net-next' a helper
was created (netdev_alloc_pcpu_stats()) which takes care of this.

The two wireless conflicts were overlapping changes.

Signed-off-by: David S. Miller

sch_tbf: Remove holes in struct tbf_sched_data.

2014-03-03T20:43:47+00:00

On x86_64 we have 3 holes in struct tbf_sched_data.

The member peak_present can be replaced with peak.rate_bytes_ps,
because peak.rate_bytes_ps is set only when peak is specified in
tbf_change(). tbf_peak_present() is introduced to test
peak.rate_bytes_ps.

The member max_size is moved to fill 32bit hole.

Signed-off-by: Hiroaki SHIMODA 
Signed-off-by: David S. Miller

sch_tbf: Fix potential memory leak in tbf_change().

2014-02-27T17:53:50+00:00

The allocated child qdisc is not freed in error conditions.
Defer the allocation after user configuration turns out to be
valid and acceptable.

Fixes: cc106e441a63b ("net: sched: tbf: fix the calculation of max_size")
Signed-off-by: Hiroaki SHIMODA 
Cc: Yang Yingliang 
Acked-by: Eric Dumazet 
Signed-off-by: David S. Miller

net: add and use skb_gso_transport_seglen()

2014-01-27T06:38:23+00:00

This moves part of Eric Dumazets skb_gso_seglen helper from tbf sched to
skbuff core so it may be reused by upcoming ip forwarding path patch.

Signed-off-by: Florian Westphal 
Acked-by: Eric Dumazet 
Signed-off-by: David S. Miller

sch_tbf: add TBF_BURST/TBF_PBURST attribute

2013-12-26T18:54:22+00:00

When we set burst to 1514 with low rate in userspace,
the kernel get a value of burst that less than 1514,
which doesn't work.

Because it may make some loss when transform burst
to buffer in userspace. This makes burst lose some
bytes, when the kernel transform the buffer back to
burst.

This patch adds two new attributes to support sending
burst/mtu to kernel directly to avoid the loss.

Signed-off-by: Yang Yingliang 
Acked-by: Eric Dumazet 
Signed-off-by: David S. Miller

sch_tbf: use do_div() for 64-bit divide

2013-12-12T03:53:26+00:00

It's doing a 64-bit divide which is not supported
on 32-bit architectures in psched_ns_t2l(). The
correct way to do this is to use do_div().

It's introduced by commit cc106e441a63
("net: sched: tbf: fix the calculation of max_size")

Reported-by: kbuild test robot 
Signed-off-by: Yang Yingliang 
Signed-off-by: David S. Miller