Neil Horman 3b885787ea net: Generalize socket rx gap / receive queue overflow cmsg ... Create a new socket level option to report number of queue overflows Recently I augmented the AF_PACKET protocol to report the number of frames lost on the socket receive queue between any two enqueued frames. This value was exported via a SOL_PACKET level cmsg. AFter I completed that work it was requested that this feature be generalized so that any datagram oriented socket could make use of this option. As such I've created this patch, It creates a new SOL_SOCKET level option called SO_RXQ_OVFL, which when enabled exports a SOL_SOCKET level cmsg that reports the nubmer of times the sk_receive_queue overflowed between any two given frames. It also augments the AF_PACKET protocol to take advantage of this new feature (as it previously did not touch sk->sk_drops, which this patch uses to record the overflow count). Tested successfully by me. Notes: 1) Unlike my previous patch, this patch simply records the sk_drops value, which is not a number of drops between packets, but rather a total number of drops. Deltas must be computed in user space. 2) While this patch currently works with datagram oriented protocols, it will also be accepted by non-datagram oriented protocols. I'm not sure if thats agreeable to everyone, but my argument in favor of doing so is that, for those protocols which aren't applicable to this option, sk_drops will always be zero, and reporting no drops on a receive queue that isn't used for those non-participating protocols seems reasonable to me. This also saves us having to code in a per-protocol opt in mechanism. 3) This applies cleanly to net-next assuming that commit 977750076d (my af packet cmsg patch) is reverted Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2009-10-12 13:26:31 -07:00
..
dec	…
emma	MIPS: Eleminate filenames from comments	2009-08-03 17:52:40 +01:00
fw	…
ip32	…
lasat	MIPS: Lasat: Fix compilation	2009-09-17 20:07:42 +02:00
mach-ar7	MIPS: Add support for Texas Instruments AR7 System-on-a-Chip	2009-07-03 15:45:23 +01:00
mach-au1x00	MIPS: Alchemy: add gpio_request/gpio_free stubs for CONFIG_GPIOLIB=n	2009-09-17 20:07:42 +02:00
mach-bcm47xx	MIPS: BCM47xx: Fix gpio_direction_output	2009-06-17 11:06:28 +01:00
mach-bcm63xx	MIPS: BCM63xx: Add PCMCIA & Cardbus support.	2009-09-30 21:47:01 +02:00
mach-cavium-octeon	MIPS: Octeon: Set kernel_uses_llsc to false on non-SMP builds.	2009-09-17 20:07:50 +02:00
mach-cobalt	Update Yoichi Yuasa's e-mail address	2009-07-03 15:45:29 +01:00
mach-db1x00	…
mach-dec	…
mach-emma2rh	…
mach-excite	…
mach-generic	MIPS: Pass struct device to plat_dma_addr_to_phys()	2009-06-17 11:06:24 +01:00
mach-ip22	MIPS: IP22/28: Switch over to RTC class driver	2008-10-15 12:46:51 +01:00
mach-ip27	cpumask: remove obsolete node_to_cpumask now everyone uses cpumask_of_node	2009-09-24 09:34:34 +09:30
mach-ip28	MIPS: IP22/28: Switch over to RTC class driver	2008-10-15 12:46:51 +01:00
mach-ip32	MIPS: Pass struct device to plat_dma_addr_to_phys()	2009-06-17 11:06:24 +01:00
mach-jazz	MIPS: Pass struct device to plat_dma_addr_to_phys()	2009-06-17 11:06:24 +01:00
mach-lasat	…
mach-loongson	MIPS: Loongson: Add a machtype kernel command line argument	2009-09-17 20:07:47 +02:00
mach-malta	MIPS: Malta: Remove pointless use use of CONFIG_CPU_HAS_LLSC	2009-09-17 20:07:49 +02:00
mach-mipssim	…
mach-pb1x00	…
mach-pnx833x	MIPS: Add support for NXP PNX833x (STB222/5) into linux kernel	2008-10-27 16:18:29 +00:00
mach-pnx8550	…
mach-rc32434	MIPS: RB532: Cleanup cpu-features-overrides	2009-06-17 11:06:26 +01:00
mach-rm	…
mach-sibyte	…
mach-tx39xx	…
mach-tx49xx	MIPS: RBTX4939: Add smc91x support	2008-10-27 16:18:27 +00:00
mach-vr41xx	…
mach-wrppmc	…
mach-yosemite	…
mips-boards	MIPS: Loongson: Change naming methods	2009-09-17 20:07:47 +02:00
octeon	MIPS: Octeon: Add hardware RNG platform device.	2009-09-17 20:07:51 +02:00
pci	…
pmc-sierra/msp71xx	MIPS: MSPxxxx: define MIPS34K_MISSED_ITLB_WAR for other PMC-Sierra SoC	2009-08-03 17:52:43 +01:00
sgi	…
sibyte	…
sn	MIPS: Build fix - include <linux/smp.h> into all smp_processor_id() users.	2009-06-24 18:34:39 +01:00
txx9	MIPS: TXx9: Add TX4939 RNG support	2009-06-17 11:06:27 +01:00
vr41xx	Update Yoichi Yuasa's e-mail address	2009-07-03 15:45:29 +01:00
xtalk	…
Kbuild	byteorder: make swab.h include asm/swab.h like a regular header	2009-01-14 19:56:50 -08:00
abi.h	…
addrspace.h	…
amon.h	MIPS: CMP: activate CMP support	2009-07-03 15:45:26 +01:00
asm.h	…
asmmacro-32.h	…
asmmacro-64.h	…
asmmacro.h	MIPS: Use EI/DI for MIPS R2.	2008-12-12 18:12:23 +00:00
atomic.h	MIPS: Allow kernel use of LL/SC to be separate from the presence of LL/SC.	2009-09-17 20:07:50 +02:00
auxvec.h	…
barrier.h	…
bcache.h	…
bitops.h	MIPS: Allow kernel use of LL/SC to be separate from the presence of LL/SC.	2009-09-17 20:07:50 +02:00
bitsperlong.h	asm-generic: introduce asm/bitsperlong.h	2009-06-11 21:02:14 +02:00
bootinfo.h	MIPS: Loongson: Add a machtype kernel command line argument	2009-09-17 20:07:47 +02:00
branch.h	…
break.h	MIPS: Switch FPU emulator trap to BREAK instruction.	2008-10-30 14:44:34 +00:00
bug.h	MIPS: bug.h Build fix - include <linux/compiler.h>.	2009-06-24 18:34:38 +01:00
bugs.h	MIPS: Build fix - include <linux/smp.h> into all smp_processor_id() users.	2009-06-24 18:34:39 +01:00
byteorder.h	byteorder: make swab.h include asm/swab.h like a regular header	2009-01-14 19:56:50 -08:00
cache.h	…
cachectl.h	…
cacheflush.h	…
cacheops.h	…
cevt-r4k.h	MIPS: Have a heart for a lonely, lost header file ...	2008-10-15 12:46:49 +01:00
checksum.h	MIPS: uaccess: Switch lock annotations to might_fault().	2009-05-14 13:50:28 +01:00
cmp.h	…
cmpxchg.h	MIPS: Allow kernel use of LL/SC to be separate from the presence of LL/SC.	2009-09-17 20:07:50 +02:00
compat-signal.h	…
compat.h	MIPS: Do not include seccomp.h from compat.h	2009-05-14 13:50:26 +01:00
compiler.h	…
cpu-features.h	MIPS: Allow kernel use of LL/SC to be separate from the presence of LL/SC.	2009-09-17 20:07:50 +02:00
cpu-info.h	MIPS: Outline udelay and fix a few issues.	2009-06-08 16:57:51 +01:00
cpu.h	MIPS: BCM63xx: Add Broadcom 63xx CPU definitions.	2009-09-17 20:07:52 +02:00
cputime.h	…
current.h	…
debug.h	…
delay.h	MIPS: Fix potencial build error in <asm/delay.h>	2009-09-17 20:07:41 +02:00
device.h	…
div64.h	MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0.	2009-05-14 13:50:29 +01:00
dma-mapping.h	MIPS: Synchronize dma_map_page and dma_map_single	2009-05-14 13:50:26 +01:00
dma.h	…
ds1287.h	Update Yoichi Yuasa's e-mail address	2009-07-03 15:45:29 +01:00
dsp.h	…
edac.h	…
elf.h	MIPS: 64-bit: Fix o32 core dump	2009-07-03 15:45:27 +01:00
emergency-restart.h	…
errno.h	cfg80211: errno.h: define ERFKILL	2009-06-07 05:01:00 -07:00
fb.h	…
fcntl.h	…
fixmap.h	MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.	2009-09-17 20:07:52 +02:00
floppy.h	…
fpregdef.h	…
fpu.h	…
fpu_emulator.h	MIPS: Switch FPU emulator trap to BREAK instruction.	2008-10-30 14:44:34 +00:00
ftrace.h	tracing: make CALLER_ADDRx overwriteable	2009-03-02 16:49:37 -05:00
futex.h	…
gcmpregs.h	MIPS: CMP: Move gcmp_probe to before the SMP ops	2009-07-03 15:45:26 +01:00
gic.h	MIPS: Fix compile for !CONFIG_SMP	2009-08-03 17:52:40 +01:00
gpio.h	…
gt64120.h	…
hardirq.h	MIPS: Convert to asm-generic/hardirq.h	2009-09-17 20:07:48 +02:00
hazards.h	MIPS: Loongson 2 needs no hazard barriers.	2009-05-14 13:50:26 +01:00
highmem.h	MIPS: Fix highmem.	2009-05-14 13:50:29 +01:00
hugetlb.h	MIPS: Add support files for hugetlbfs.	2009-06-17 11:06:30 +01:00
hw_irq.h	…
i8253.h	time: move PIT_TICK_RATE to linux/timex.h	2009-06-16 19:47:27 -07:00
i8259.h	…
ide.h	…
inst.h	…
io.h	MIPS: Modify core io.h macros to account for the Octeon Errata Core-301.	2009-01-11 09:57:22 +00:00
ioctl.h	MIPS: ioctl.h: Cleanup.	2009-06-17 11:06:28 +01:00
ioctls.h	…
ipcbuf.h	…
irq.h	MIPS: Build fix - include <linux/smp.h> into all smp_processor_id() users.	2009-06-24 18:34:39 +01:00
irq_cpu.h	…
irq_gt641xx.h	Update Yoichi Yuasa's e-mail address	2009-07-03 15:45:29 +01:00
irq_regs.h	…
irqflags.h	…
isadep.h	…
jazz.h	…
jazzdma.h	…
kdebug.h	…
kexec.h	…
kgdb.h	…
kmap_types.h	kmap_types: make most arches use generic header file	2009-06-16 19:47:51 -07:00
kspd.h	…
linkage.h	…
local.h	MIPS: Allow kernel use of LL/SC to be separate from the presence of LL/SC.	2009-09-17 20:07:50 +02:00
m48t37.h	…
mc146818-time.h	mips: use bcd2bin/bin2bcd	2008-10-20 08:52:41 -07:00
mc146818rtc.h	…
mips_mt.h	…
mipsmtregs.h	…
mipsprom.h	…
mipsregs.h	MIPS: Add hugetlbfs page defines.	2009-06-17 11:06:30 +01:00
mman.h	mm: add MAP_HUGETLB for mmaping pseudo-anonymous huge page regions	2009-09-22 07:17:41 -07:00
mmu.h	…
mmu_context.h	cpumask: use mm_cpumask() wrapper: mips	2009-09-24 09:34:51 +09:30
mmzone.h	…
module.h	MIPS: Add Cavium OCTEON processor constants and CPU probe.	2009-01-11 09:57:22 +00:00
msc01_ic.h	…
msgbuf.h	…
mutex.h	…
nile4.h	…
paccess.h	…
page.h	MIPS: make page.h constants available to assembly.	2009-09-17 20:07:42 +02:00
param.h	…
parport.h	…
pci.h	PCI: remove pcibios_scan_all_fns()	2009-09-09 13:29:18 -07:00
percpu.h	…
pgalloc.h	mm: Remove duplicate definitions in MIPS and SH	2009-07-27 17:26:44 -07:00
pgtable-32.h	…
pgtable-64.h	MIPS: Shrink the size of tlb handler	2009-09-17 20:07:51 +02:00
pgtable-bits.h	MIPS: Add hugetlbfs page defines.	2009-06-17 11:06:30 +01:00
pgtable.h	mm: ZERO_PAGE without PTE_SPECIAL	2009-09-22 07:17:41 -07:00
pmon.h	…
poll.h	…
posix_types.h	…
prefetch.h	MIPS: NEC VR5500 processor support fixup	2009-03-11 21:11:07 +01:00
processor.h	MIPS: Avoid clobbering struct pt_regs in kthreads	2009-08-03 17:52:41 +01:00
ptrace.h	MIPS: Fix a typo in watchpoint register structure.	2009-01-30 21:32:58 +00:00
r4k-timer.h	…
r4kcache.h	MIPS: Support 64-byte D-cache line size	2009-06-17 11:06:24 +01:00
reboot.h	…
reg.h	MIPS: 64-bit: Fix o32 core dump	2009-07-03 15:45:27 +01:00
regdef.h	…
resource.h	…
rm9k-ocd.h	…
rtlx.h	…
scatterlist.h	…
seccomp.h	MIPS: Fix TIF_32BIT undefined problem when seccomp is disabled	2009-03-13 23:07:59 +01:00
sections.h	…
segment.h	…
sembuf.h	…
serial.h	…
setup.h	…
sgialib.h	…
sgiarcs.h	…
sgidefs.h	…
shmbuf.h	…
shmparam.h	…
sigcontext.h	headers_check fix: mips, sigcontext.h	2009-02-01 11:01:26 +05:30
siginfo.h	…
signal.h	asm-generic: rename termios.h, signal.h and mman.h	2009-06-11 21:01:52 +02:00
sim.h	…
smp-ops.h	cpumask: arch_send_call_function_ipi_mask: mips	2009-09-24 09:34:45 +09:30
smp.h	MIPS: SMP: Inline arch_send_call_function_{single_ipi,ipi_mask}	2009-09-30 21:47:00 +02:00
smtc.h	…
smtc_ipi.h	…
smtc_proc.h	…
smvp.h	…
sni.h	…
socket.h	net: Generalize socket rx gap / receive queue overflow cmsg	2009-10-12 13:26:31 -07:00
sockios.h	…
sparsemem.h	…
spinlock.h	Allow rwlocks to re-enable interrupts	2009-04-02 19:05:11 -07:00
spinlock_types.h	…
stackframe.h	MIPS: Cavium OCTEON multiplier state preservation.	2009-01-11 09:57:24 +00:00
stacktrace.h	…
stat.h	…
statfs.h	…
string.h	…
suspend.h	MIPS: Add hibernation support	2009-06-17 11:06:31 +01:00
swab.h	MIPS: Define __arch_swab64 for all mips r2 cpus	2009-07-03 15:45:25 +01:00
sysmips.h	…
system.h	MIPS: Allow kernel use of LL/SC to be separate from the presence of LL/SC.	2009-09-17 20:07:50 +02:00
termbits.h	…
termios.h	MIPS: Add return value checks to user_termio_to_kernel_termios()	2009-01-30 21:32:57 +00:00
thread_info.h	KEYS: Extend TIF_NOTIFY_RESUME to (almost) all architectures [try #6]	2009-09-02 21:29:19 +10:00
time.h	MIPS: Fix build error if CONFIG_CEVT_R4K is undefined.	2009-05-14 13:50:25 +01:00
timex.h	…
titan_dep.h	…
tlb.h	…
tlbdebug.h	…
tlbflush.h	…
topology.h	…
traps.h	…
txx9irq.h	…
txx9pio.h	…
txx9tmr.h	…
types.h	asm-generic: introduce asm/bitsperlong.h	2009-06-11 21:02:14 +02:00
uaccess.h	MIPS: Fix sparse warning in incompatiable argument type of clear_user.	2009-05-22 13:52:05 +01:00
ucontext.h	…
unaligned.h	MIPS: Avoid spurious make includecheck message	2009-09-30 21:47:02 +02:00
unistd.h	perf: Do the big rename: Performance Counters -> Performance Events	2009-09-21 14:28:04 +02:00
user.h	…
vga.h	…
vpe.h	…
war.h	…
watch.h	…
wbflush.h	…
xor.h	…