android_kernel_motorola_sm6375/include
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Filename Latest commit message Latest commit date
Patrick McHardy 43effa1e57 [NET_SCHED]: Fix endless loops caused by inaccurate qlen counters (part 1)
There are multiple problems related to qlen adjustment that can lead
to an upper qdisc getting out of sync with the real number of packets
queued, leading to endless dequeueing attempts by the upper layer code.

All qdiscs must maintain an accurate q.qlen counter. There are basically
two groups of operations affecting the qlen: operations that propagate
down the tree (enqueue, dequeue, requeue, drop, reset) beginning at the
root qdisc and operations only affecting a subtree or single qdisc
(change, graft, delete class). Since qlen changes during operations from
the second group don't propagate to ancestor qdiscs, their qlen values
become desynchronized.

This patch adds a function to propagate qlen changes up the qdisc tree,
optionally calling a callback function to perform qdisc-internal
maintenance when the child qdisc becomes empty. The follow-up patches
will convert all qdiscs to use this function where necessary.

Noticed by Timo Steinbach <tsteinbach@astaro.com>.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:31:42 -08:00
..
acpi
asm-alpha
asm-arm [NET]: ARM checksum annotations and cleanups. 2006-12-02 21:23:15 -08:00
asm-arm26 [NET]: ARM26 checksum annotations and cleanups. 2006-12-02 21:23:16 -08:00
asm-avr32 [NET]: AVR32 checksum annotations and cleanups. 2006-12-02 21:23:18 -08:00
asm-cris
asm-frv
asm-generic
asm-h8300
asm-i386 [NET]: I386 checksum annotations and cleanups. 2006-12-02 21:23:19 -08:00
asm-ia64
asm-m32r
asm-m68k
asm-m68knommu [NET]: M68Knommu checksum annotations and cleanups. 2006-12-02 21:23:08 -08:00
asm-mips [NET]: MIPS checksum annotations and cleanups. 2006-12-02 21:23:09 -08:00
asm-parisc [NET]: PARISC checksum annotations and cleanups. 2006-12-02 21:23:10 -08:00
asm-powerpc [NET]: POWERPC checksum annotations and cleanups. 2006-12-02 21:23:20 -08:00
asm-ppc
asm-s390 [NET]: S390 checksum annotations and cleanups. 2006-12-02 21:23:21 -08:00
asm-sh [NET]: SH checksum annotations and cleanups. 2006-12-02 21:23:22 -08:00
asm-sh64 [NET]: SH64 checksum annotations and cleanups. 2006-12-02 21:23:11 -08:00
asm-sparc [NET]: SPARC checksum annotations and cleanups. 2006-12-02 21:23:22 -08:00
asm-sparc64 [NET]: SPARC64 checksum annotations and cleanups. 2006-12-02 21:23:23 -08:00
asm-um
asm-v850 [NET]: V850 checksum annotations and cleanups. 2006-12-02 21:23:13 -08:00
asm-x86_64 [NET]: X86_64 checksum annotations and cleanups. 2006-12-02 21:23:14 -08:00
asm-xtensa [NET]: XTENSA checksum annotations and cleanups. 2006-12-02 21:23:24 -08:00
crypto
keys
linux [NETFILTER]: ebtables: add --snap-arp option 2006-12-02 21:31:32 -08:00
math-emu
media
mtd
net [NET_SCHED]: Fix endless loops caused by inaccurate qlen counters (part 1) 2006-12-02 21:31:42 -08:00
pcmcia
rdma
rxrpc
scsi
sound
video
Kbuild