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2007-04-26[NET_SCHED]: qdisc: remove unnecessary memory barriersPatrick McHardy1-2/+0
We're holding dev->queue_lock in qdisc_watchdog_schedule and qdisc_watchdog_cancel, no need for the barriers. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: Unline tcf_destroyPatrick McHardy8-70/+28
Uninline tcf_destroy and add a helper function to destroy an entire filter chain. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: turn PSCHED_GET_TIME into inline functionPatrick McHardy6-28/+22
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: turn PSCHED_TDIFF_SAFE into inline functionPatrick McHardy3-7/+7
Also rename to psched_tdiff_bounded. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: kill PSCHED_TDIFFPatrick McHardy1-7/+7
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: kill PSCHED_SET_PASTPERFECT/PSCHED_IS_PASTPERFECTPatrick McHardy2-10/+9
Use direct assignment and comparison instead. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: kill PSCHED_TLESSPatrick McHardy2-7/+6
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: kill PSCHED_TADD/PSCHED_TADD2Patrick McHardy2-7/+7
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: kill PSCHED_AUDIT_TDIFFPatrick McHardy1-2/+0
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: sch_netem: fix off-by-one in send time comparisonPatrick McHardy1-1/+1
netem checks PSCHED_TLESS(cb->time_to_send, now) to find out whether it is allowed to send a packet, which is equivalent to cb->time_to_send < now. Use !PSCHED_TLESS(now, cb->time_to_send) instead to properly handle cb->time_to_send == now. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NETEM]: spelling errorsStephen Hemminger1-3/+3
Get rid of some of my creative spelling. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED] qdisc: avoid transmit softirq on watchdog wakeupStephen Hemminger1-1/+7
If possible, avoid having to do a transmit softirq when a qdisc watchdog decides to re-enable. The watchdog routine runs off a timer, so it is already in the same effective context as the softirq. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NETEM]: avoid excessive requeuesStephen Hemminger2-10/+16
The netem code would call getnstimeofday() and dequeue/requeue after every packet, even if it was waiting. Avoid this overhead by using the throttled flag. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NETEM]: Optimize tfifoStephen Hemminger1-4/+11
In most cases, the next packet will be sent after the last one. So optimize that case. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NETEM]: use better types for time valuesStephen Hemminger1-9/+12
The random number generator always generates 32 bit values. The time values are limited by psched_tdiff_t Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NETEM]: report reorder percent correctly.Stephen Hemminger1-1/+2
If you setup netem to just delay packets; "tc qdisc ls" will report the reordering as 100%. Well it's a lie, reorder isn't used unless gap is set, so just set value to 0 so the output of utility is correct. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[PKT_SCHED] act: Use rtnl registration interfaceThomas Graf1-9/+3
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[PKT_SCHED] cls: Use rtnl registration interfaceThomas Graf1-12/+4
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[PKT_SCHED] qdisc: Use rtnl registration interfaceThomas Graf1-20/+7
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NETLINK]: Use nlmsg_trim() where appropriateArnaldo Carvalho de Melo26-44/+70
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[SK_BUFF]: Convert skb->tail to sk_buff_data_tArnaldo Carvalho de Melo25-95/+98
So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes on 64bit architectures, allowing us to combine the 4 bytes hole left by the layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4 64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN... :-) Many calculations that previously required that skb->{transport,network, mac}_header be first converted to a pointer now can be done directly, being meaningful as offsets or pointers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: Fix warningPatrick McHardy1-1/+2
net/sched/sch_api.c: In function 'psched_show': net/sched/sch_api.c:1219: warning: format '%08x' expects type 'unsigned int', but argument 6 has type 's64' Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: sch_cbq: fix watchdog scheduled too latePatrick McHardy1-1/+1
q->now is increased during dequeue and doesn't contain the current time afterwards, resulting in a too large timeout value for the qdisc watchdog. Use "now" instead, which still contains the current time. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: Export real timer resolution in /proc/net/pschedPatrick McHardy1-1/+1
The timer resolution exported in /proc/net/psched is used by userspace to calculate HTB's burst values. Currently it is set to HZ, since we're now using hrtimers, use KTIME_MONOTONIC_RES, which makes HTB use smaller burst values. This patch also affects libnl, which incorrectly uses this value for the SFQ perturbation parameter, which is always in seconds, and some routing cache values, which are in USER_HZ, so both cases are broken anyway. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: kill jiffie conversion macrosPatrick McHardy2-7/+7
Now that all packet schedulers have been converted to hrtimers most users of PSCHED_JIFFIE2US and PSCHED_US2JIFFIE are gone. The remaining users use it to convert external time units to packet scheduler clock ticks, so use PSCHED_TICKS_PER_SEC instead. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: sch_htb: use hrtimer based watchdogPatrick McHardy1-60/+31
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: sch_cbq: use hrtimer for delay_timerPatrick McHardy1-29/+41
Switch delay_timer to hrtimer. The class penalty parameter is changed to use psched ticks as units. Since iproute never supported using this and the only existing user (libnl) incorrectly assumes psched ticks as units anyway, this shouldn't break anything. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: sch_cbq: fix cbq_undelay_prio for non-active prioritesPatrick McHardy1-1/+1
cbq_undelay_prio is supposed to return a time delta, but returns the current time for non-active priorities, causing cbq_undelay to mark the priority as active and schedule a timer for twice the current time. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: sch_cbq: use hrtimer based watchdogPatrick McHardy1-21/+7
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: sch_netem: use hrtimer based watchdogPatrick McHardy1-20/+5
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: sch_tbf: use hrtimer based watchdogPatrick McHardy1-24/+7
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: sch_hfsc: use hrtimer based watchdogPatrick McHardy1-25/+7
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: Add hrtimer based qdisc watchdogPatrick McHardy1-0/+36
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET_SCHED]: Use ktime as clocksourcePatrick McHardy3-159/+5
Get rid of the manual clock source selection mess and use ktime. Also use a scalar representation, which allows to clean up pkt_sched.h a bit more and results in less ktime_to_ns() calls in most cases. The PSCHED_US2JIFFIE/PSCHED_JIFFIE2US macros are implemented quite inefficient by this patch, following patches will convert all qdiscs to hrtimers and get rid of them entirely. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6hArnaldo Carvalho de Melo3-4/+4
Now the skb->nh union has just one member, .raw, i.e. it is just like the skb->mac union, strange, no? I'm just leaving it like that till the transport layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or ->mac_header_offset?), ditto for ->{h,nh}. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iphArnaldo Carvalho de Melo4-6/+6
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[SK_BUFF]: Introduce skb_network_header()Arnaldo Carvalho de Melo3-3/+3
For the places where we need a pointer to the network header, it is still legal to touch skb->nh.raw directly if just adding to, subtracting from or setting it to another layer header. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[SK_BUFF]: Introduce skb_network_offset()Arnaldo Carvalho de Melo1-1/+1
For the quite common 'skb->nh.raw - skb->data' sequence. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[NET] SCHED: Use htons() where appropriate.YOSHIFUJI Hideaki2-2/+2
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-10[NET_SCHED]: cls_tcindex: fix compatibility breakagePatrick McHardy1-2/+2
Userspace uses an integer for TCA_TCINDEX_SHIFT, the kernel was changed to expect and use a u16 value in 2.6.11, which broke compatibility on big endian machines. Change back to use int. Reported by Ole Reinartz <ole.reinartz@gmx.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-03[NET_SCHED]: cls_basic: fix memory leak in basic_destroyPatrick McHardy1-0/+1
tp->root is not freed on destruction. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-29[IFB]: Fix crash on input device removalPatrick McHardy1-1/+1
The input_device pointer is not refcounted, which means the device may disappear while packets are queued, causing a crash when ifb passes packets with a stale skb->dev pointer to netif_rx(). Fix by storing the interface index instead and do a lookup where neccessary. Signed-off-by: Patrick McHardy <kaber@trash.net> Acked-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-28[NET_SCHED]: sch_htb/sch_hfsc: fix oops in qlen_notifyPatrick McHardy2-4/+6
During both HTB and HFSC class deletion the class is removed from the class hash before calling qdisc_tree_decrease_qlen. This makes the ->get operation in qdisc_tree_decrease_qlen fail, so it passes a NULL pointer to ->qlen_notify, causing an oops. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-27[NET]: Remove dead net/sched/Makefile entry for sch_hpfq.o.Robert P. J. Day1-1/+0
Remove the worthless net/sched/Makefile entry for the non-existent source file sch_hpfq.c. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-26[NET_SCHED]: cls_basic: fix NULL pointer dereferencePatrick McHardy1-9/+7
cls_basic doesn't allocate tp->root before it is linked into the active classifier list, resulting in a NULL pointer dereference when packets hit the classifier before its ->change function is called. Reported by Chris Madden <chris@reflexsecurity.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-22[NET]: fix up misplaced inlines.Dave Jones1-1/+1
Turning up the warnings on gcc makes it emit warnings about the placement of 'inline' in function declarations. Here's everything that was under net/ Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-14[PATCH] remove many unneeded #includes of sched.hTim Schmielau21-21/+0
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-13[NET_SCHED]: sch_hfsc: replace ASSERT macro by WARN_ONPatrick McHardy1-14/+1
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-12[PATCH] mark struct file_operations const 8Arjan van de Ven1-1/+1
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[NET] SCHED: Fix whitespace errors.YOSHIFUJI Hideaki33-207/+207
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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