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Dave Johnson 1d464c26b5 [MIPS] Fix wrong checksum for split TCP packets on 64-bit MIPS 
I've traced down an off-by-one TCP checksum calculation error under
the following conditions:

1) The TCP code needs to split a full-sized packet due to a reduced
   MSS (typically due to the addition of TCP options mid-stream like
   SACK).
   _AND_
2) The checksum of the 2nd fragment is larger than the checksum of the
   original packet.  After subtraction this results in a checksum for
   the 1st fragment with bits 16..31 set to 1. (this is ok)
   _AND_
3) The checksum of the 1st fragment's TCP header plus the previously
   32bit checksum of the 1st fragment DOES NOT cause a 32bit overflow
   when added together.  This results in a checksum of the TCP header
   plus TCP data that still has the upper 16 bits as 1's.
   _THEN_
4) The TCP+data checksum is added to the checksum of the pseudo IP
   header with csum_tcpudp_nofold() incorrectly (the bug).
    
The problem is the checksum of the TCP+data is passed to
csum_tcpudp_nofold() as an 32bit unsigned value, however the assembly
code acts on it as if it is a 64bit unsigned value.

This causes an incorrect 32->64bit extension if the sum has bit 31
set.  The resulting checksum is off by one.
    
This problems is data and TCP header dependent due to #2 and #3
above so it doesn't occur on every TCP packet split.
    
Signed-off-by: Dave Johnson <djohnson+linux-mips@sw.starentnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-04-20 14:58:37 +01:00
..
arc
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
ddb5xxx
[MIPS] Make I8259A_IRQ_BASE customizable
2007-02-06 16:53:09 +00:00
dec
[TC] TURBOchannel support for the DECstation
2007-02-09 16:23:16 +00:00
emma2rh
[MIPS] Define MIPS_CPU_IRQ_BASE in generic header
2007-02-06 16:53:08 +00:00
ip32
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
jmr3927
[MIPS] Convert to RTC-class ds1742 driver
2007-03-04 19:02:34 +00:00
lasat
[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.
2007-03-04 19:02:37 +00:00
mach-atlas
[MIPS] SNI: Fix mc146818_decode_year
2007-03-04 19:02:31 +00:00
mach-au1x00
ide: remove static prototypes from include/asm-mips/mach-au1x00/au1xxx_ide.h
2007-03-17 21:57:24 +01:00
mach-cobalt
[MIPS] Define MIPS_CPU_IRQ_BASE in generic header
2007-02-06 16:53:08 +00:00
mach-db1x00
[PATCH] Au1550/1200: add missing PSC #define's, make OSS driver use the proper ones
2006-06-23 07:42:56 -07:00
mach-dec
[PATCH] char/rtc: Handle memory-mapped chips properly
2006-07-10 13:24:25 -07:00
mach-emma2rh
[MIPS] Define MIPS_CPU_IRQ_BASE in generic header
2007-02-06 16:53:08 +00:00
mach-ev64120
[MIPS] Add UART IRQ number for EV64120
2006-10-01 23:16:59 +01:00
mach-excite
[MIPS] s/__ASSEMBLER__/__ASSEMBLY__/ for clarity sake.
2006-09-27 13:37:57 +01:00
mach-generic
[MIPS] DMA: Fix a bunch of warnings due to missing inline keywords.
2007-03-04 19:02:39 +00:00
mach-ip22
Merge git://git.infradead.org/hdrcleanup-2.6
2006-06-20 15:10:08 -07:00
mach-ip27
[MIPS] IP27, IP35: Fix warnings.
2007-03-17 01:03:24 +00:00
mach-ip32
[MIPS] IP27, IP35: Fix warnings.
2007-03-17 01:03:24 +00:00
mach-ja
[MIPS] Use the proper technical term for naming some of the cache macros.
2006-07-13 21:26:04 +01:00
mach-jazz
[MIPS] Unify dma-{coherent,noncoherent.ip27,ip32}
2007-02-13 22:40:50 +00:00
mach-jmr3927
[MIPS] Convert to RTC-class ds1742 driver
2007-03-04 19:02:34 +00:00
mach-lasat
…
mach-mips
[MIPS] SNI: Fix mc146818_decode_year
2007-03-04 19:02:31 +00:00
mach-ocelot
…
mach-ocelot3
[MIPS] Use the proper technical term for naming some of the cache macros.
2006-07-13 21:26:04 +01:00
mach-pb1x00
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
mach-pnx8550
[MIPS] PNX8550 fixups
2006-10-04 18:06:15 +01:00
mach-qemu
[MIPS] Qemu does not have D-cache aliases
2006-09-27 13:37:49 +01:00
mach-rm
[MIPS] RM: It should be #ifdef CONFIG_FOO not #if CONFIG_FOO ...
2007-03-04 19:02:38 +00:00
mach-sibyte
[MIPS] Use the proper technical term for naming some of the cache macros.
2006-07-13 21:26:04 +01:00
mach-sim
[MIPS] Use the proper technical term for naming some of the cache macros.
2006-07-13 21:26:04 +01:00
mach-vr41xx
[MIPS] Make I8259A_IRQ_BASE customizable
2007-02-06 16:53:09 +00:00
mach-wrppmc
[MIPS] Wind River 4KC PPMC Eval Board Support
2006-06-19 17:39:18 +01:00
mach-yosemite
[MIPS] Use the proper technical term for naming some of the cache macros.
2006-07-13 21:26:04 +01:00
mips-boards
[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.
2007-03-04 19:02:37 +00:00
pci
[MIPS] SN: include asm/sn/types.h for nasid_t.
2006-06-19 17:39:24 +01:00
sgi
[MIPS] Define MIPS_CPU_IRQ_BASE in generic header
2007-02-06 16:53:08 +00:00
sibyte
[MIPS] Add missing silicon revisions for BCM112x
2007-04-20 14:58:37 +01:00
sn
[MIPS] IP27: Move definition of nic_t to its sole user.
2006-12-12 01:46:24 +00:00
tx4927
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
tx4938
fix file specification in comments
2006-10-03 23:01:26 +02:00
vr41xx
[MIPS] Make I8259A_IRQ_BASE customizable
2007-02-06 16:53:09 +00:00
xtalk
…
8253pit.h
…
a.out.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
abi.h
[MIPS] signals: Share even more code.
2007-02-18 21:31:35 +00:00
addrspace.h
[MIPS] Use "long" for 64-bit values on 64-bit kernel.
2006-11-30 01:14:43 +00:00
asm.h
[MIPS] 16K & 64K page size fixes
2006-11-01 17:46:09 +00:00
asmmacro-32.h
[MIPS] Fix fpu_save_double on 64-bit.
2006-06-19 17:39:13 +01:00
asmmacro-64.h
[MIPS] Fix fpu_save_double on 64-bit.
2006-06-19 17:39:13 +01:00
asmmacro.h
[MIPS] Fix use of ehb instruction for non-R2 configurations.
2006-06-29 21:10:49 +01:00
atomic.h
[MIPS] Lockdep: Fix recursion bug.
2007-03-17 01:03:29 +00:00
auxvec.h
[PATCH] auxiliary vector cleanups
2005-09-07 16:57:21 -07:00
barrier.h
[MIPS] Cleanup memory barriers for weakly ordered systems.
2006-12-04 22:43:14 +00:00
bcache.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
bitops.h
[MIPS] Lockdep: Fix recursion bug.
2007-03-17 01:03:29 +00:00
bootinfo.h
[MIPS] prom_free_prom_memory cleanup
2007-02-06 16:53:09 +00:00
branch.h
…
break.h
Allocate break code 513 to KDB.
2005-10-29 19:30:34 +01:00
bug.h
[MIPS] Fix BUG(), BUG_ON() handling
2007-04-20 14:58:37 +01:00
bugs.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
byteorder.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
cache.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
cachectl.h
…
cacheflush.h
[MIPS] Implement flush_anon_page().
2007-03-24 17:01:49 +00:00
cacheops.h
…
checksum.h
[MIPS] Fix wrong checksum for split TCP packets on 64-bit MIPS
2007-04-20 14:58:37 +01:00
compat-signal.h
[MIPS] signals: Share even more code.
2007-02-18 21:31:35 +00:00
compat.h
[MIPS] compat.h uses struct pt_regs so needs to include ptrace.h.
2006-12-12 01:46:24 +00:00
compiler.h
…
cpu-features.h
[MIPS] FPU ownership management & preemption fixes
2007-03-17 01:03:26 +00:00
cpu-info.h
[MIPS] FPU ownership management & preemption fixes
2007-03-17 01:03:26 +00:00
cpu.h
[MIPS] Use the proper technical term for naming some of the cache macros.
2006-07-13 21:26:04 +01:00
cputime.h
…
current.h
…
debug.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
delay.h
[MIPS] Make MIPS udelay() preempt safe under DEBUG_PREEMPT
2007-03-24 17:01:49 +00:00
device.h
Driver core: add dev_archdata to struct device
2006-12-01 14:52:01 -08:00
div64.h
[MIPS] Fixup migration to GENERIC_TIME
2006-10-31 20:13:23 +00:00
dma-mapping.h
[MIPS] Don't claim we support dma_declare_coherent_memory - we don't.
2007-02-13 22:40:50 +00:00
dma.h
[MIPS] ISA: Fix typo
2007-03-08 01:10:30 +00:00
ds1216.h
[MIPS] Support for several more SNI RM models.
2007-02-18 21:31:37 +00:00
ds1286.h
…
dsp.h
MIPS: DSP: Set all register masks to 0x3ff.
2006-01-10 13:39:04 +00:00
elf.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
emergency-restart.h
…
errno.h
Delete duplicate definitions.
2005-11-07 18:05:40 +00:00
fcntl.h
[MIPS] Remove F_SETSIG and F_GETSIG in favor of the asm-generic definitions.
2006-09-27 13:37:48 +01:00
fixmap.h
[MIPS] Fix aliasing bug in copy_to_user_page / copy_from_user_page
2006-10-21 23:17:35 +01:00
floppy.h
…
fpregdef.h
[PATCH] mips: nuke trailing whitespace
2005-09-05 00:06:07 -07:00
fpu_emulator.h
[MIPS] Unify mips_fpu_soft_struct and mips_fpu_hard_structs.
2006-06-19 17:39:18 +01:00
fpu.h
[MIPS] Retry {save,restore}_fp_context if failed in atomic context.
2007-04-20 14:58:37 +01:00
futex.h
[PATCH] mm: pagefault_{disable,enable}()
2006-12-07 08:39:21 -08:00
gdb-stub.h
…
gfx.h
…
gt64120.h
[MIPS] Rewrite GALILEO_INL/GALILEO_OUTL to GT_READ/GT_WRITE
2006-11-30 01:14:43 +00:00
gt64240.h
…
hardirq.h
…
hazards.h
[MIPS] Fix pipeline hazard.
2007-03-24 17:01:49 +00:00
highmem.h
[PATCH] mm: k{,um}map_atomic() vs in_atomic()
2006-12-07 08:39:21 -08:00
hw_irq.h
[PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend()
2006-06-29 10:26:23 -07:00
i8259.h
[MIPS] Make I8259A_IRQ_BASE customizable
2007-02-06 16:53:09 +00:00
ide.h
…
inst.h
[MIPS] Fix rdhwr_op definition.
2006-07-13 21:26:08 +01:00
inventory.h
Reformatting, remove debugging code.
2005-10-29 19:30:57 +01:00
io.h
[MIPS] Iomap implementation.
2007-02-18 21:31:34 +00:00
ioctl.h
[MIPS] Remove unreferenced _IOC_SLMASK macro in ioctl.h.
2007-02-26 23:06:06 +00:00
ioctls.h
…
ipc.h
…
ipcbuf.h
…
irq_cpu.h
[MIPS] Define MIPS_CPU_IRQ_BASE in generic header
2007-02-06 16:53:08 +00:00
irq_regs.h
[MIPS] Complete fixes after removal of pt_regs argument to int handlers.
2006-10-08 02:38:28 +01:00
irq.h
[MIPS] Make I8259A_IRQ_BASE customizable
2007-02-06 16:53:09 +00:00
irqflags.h
[MIPS] SMTC: Fix recursion in instant IPI replay code.
2007-03-29 23:46:36 +01:00
isadep.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
jazz.h
…
jazzdma.h
…
Kbuild
[MIPS] Have headers_install install <asm/cachectl.h> and <asm/sysmips.h>.
2006-09-27 13:37:56 +01:00
kexec.h
[MIPS] Add support for kexec
2006-11-30 01:14:44 +00:00
kmap_types.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
kspd.h
[MIPS] kpsd and other AP/SP improvements.
2006-04-19 04:14:27 +02:00
linkage.h
[PATCH] abstract type/size specification for assembly
2006-03-24 07:33:25 -08:00
local.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
m48t35.h
…
m48t37.h
…
marvell.h
[MIPS] MV64340: Add missing prototype for mv64340_irq_init().
2007-03-29 23:46:35 +01:00
mc146818-time.h
[PATCH] RTC: Remove RTC UIP synchronization on MIPS MC146818
2006-03-28 09:16:00 -08:00
mc146818rtc.h
…
mips_mt.h
[MIPS] SMTC: <asm/mips_mt.h> must include <linux/cpumask.h>
2007-03-07 00:07:15 +00:00
mipsmtregs.h
[MIPS] MT: Nuke duplicate mips_mt_regdump() prototype.
2007-02-06 16:53:24 +00:00
mipsprom.h
…
mipsregs.h
[MIPS] Remove unused R10000 performance counter definitions.
2006-11-30 01:14:45 +00:00
mman.h
[PATCH] Remove final references to deprecated "MAP_ANON" page protection flag
2007-02-11 10:51:17 -08:00
mmu_context.h
[MIPS] Reformat missformated SMTC bits.
2006-09-27 13:37:49 +01:00
mmu.h
…
mmzone.h
[PATCH] Delete unused definitions of kvaddr_to_nid
2006-06-23 07:42:52 -07:00
module.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
msc01_ic.h
[MIPS] Complete fixes after removal of pt_regs argument to int handlers.
2006-10-08 02:38:28 +01:00
msgbuf.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
mutex.h
[PATCH] mutex subsystem, add default include/asm-*/mutex.h files
2006-01-09 15:59:19 -08:00
namei.h
…
nile4.h
…
paccess.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
page.h
[MIPS] FLATMEM: introduce PHYS_OFFSET.
2007-02-06 16:53:13 +00:00
param.h
[MIPS] Make timer interrupt frequency configurable from kconfig.
2006-06-19 17:39:27 +01:00
parport.h
…
pci.h
[MIPS] Iomap implementation.
2007-02-18 21:31:34 +00:00
percpu.h
…
pgalloc.h
[MIPS] Add external declaration of pagetable_init() to pgalloc.h
2007-02-18 21:31:36 +00:00
pgtable-32.h
[MIPS] pte_offset(dir,addr): parenthesis fix
2006-12-06 20:16:08 +00:00
pgtable-64.h
[MIPS] Always use virt_to_phys() when translating kernel addresses
2007-03-24 17:01:49 +00:00
pgtable-bits.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
pgtable.h
[MIPS] Always use virt_to_phys() when translating kernel addresses
2007-03-24 17:01:49 +00:00
pmon.h
…
poll.h
[PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications
2006-03-25 08:22:56 -08:00
posix_types.h
…
prctl.h
…
prefetch.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
processor.h
Merge git://git.infradead.org/hdrcleanup-2.6
2006-06-20 15:10:08 -07:00
ptrace.h
[MIPS] Add basic SMARTMIPS ASE support
2007-02-22 00:50:44 +00:00
qemu.h
[MIPS] Qemu system shutdown support
2006-06-19 17:39:19 +01:00
r4kcache.h
[MIPS] MT: Improved multithreading support.
2006-04-19 04:14:28 +02:00
reboot.h
[MIPS] Rename _machine_power_off to pm_power_off so the kernel builds again.
2006-02-07 13:30:22 +00:00
reg.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
regdef.h
…
resource.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
rm9k-ocd.h
[MIPS] Support for the RM9000-based Basler eXcite smart camera platform.
2006-06-19 17:39:26 +01:00
rtc.h
[MIPS] Fix genrtc compilation.
2006-04-19 04:14:22 +02:00
rtlx.h
[MIPS] RTLX: Handle copy_*_user return values.
2007-03-17 01:03:29 +00:00
scatterlist.h
…
sections.h
[MIPS] Remove _fdata from asm-mips/sections.h
2007-02-06 16:53:15 +00:00
segment.h
…
semaphore.h
[PATCH] semaphore: Remove __MUTEX_INITIALIZER()
2005-10-30 17:37:27 -08:00
sembuf.h
…
serial.h
[MIPS] Remove IT8172-based platforms, ITE 8172G and Globespan IVR support.
2006-10-03 17:59:17 +01:00
setup.h
[PATCH] cleanup asm/setup.h userspace visibility
2006-12-07 08:39:46 -08:00
sgialib.h
[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.
2007-03-04 19:02:37 +00:00
sgiarcs.h
[MIPS] ARC: Fix warning.
2007-03-24 17:01:49 +00:00
sgidefs.h
…
shmbuf.h
…
shmparam.h
…
sigcontext.h
[MIPS] Add basic SMARTMIPS ASE support
2007-02-22 00:50:44 +00:00
siginfo.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
signal.h
[MIPS] signals: Share even more code.
2007-02-18 21:31:35 +00:00
sim.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
smp.h
Merge git://git.infradead.org/hdrcleanup-2.6
2006-06-20 15:10:08 -07:00
smtc_ipi.h
[MIPS] SMTC: Fix recursion in instant IPI replay code.
2007-03-29 23:46:36 +01:00
smtc_proc.h
[MIPS] MT: Improved multithreading support.
2006-04-19 04:14:28 +02:00
smtc.h
[MIPS] SMTC: Add fordward declarations for mm_struct and task_struct.
2007-03-07 00:07:16 +00:00
sni.h
[MIPS] SNI: MIPS_CPU_IRQ_BASE cleanup
2007-02-26 23:06:06 +00:00
socket.h
[AF_UNIX]: Datagram getpeersec
2006-06-29 16:58:06 -07:00
sockios.h
…
sparsemem.h
[MIPS] Fix sparsemem support.
2006-06-06 00:15:20 +01:00
spinlock_types.h
[PATCH] spinlock consolidation
2005-09-10 10:06:21 -07:00
spinlock.h
[MIPS] Fix __raw_read_trylock() to allow multiple readers
2007-03-07 00:07:17 +00:00
stackframe.h
[MIPS] Add basic SMARTMIPS ASE support
2007-02-22 00:50:44 +00:00
stacktrace.h
[MIPS] Make unwind_stack() can dig into interrupted context
2006-10-01 23:16:59 +01:00
stat.h
…
statfs.h
[PATCH] mips: nuke trailing whitespace
2005-09-05 00:06:07 -07:00
string.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
suspend.h
…
sysmips.h
…
system.h
[MIPS] Lockdep: Fix recursion bug.
2007-03-17 01:03:29 +00:00
termbits.h
[PATCH] tty: preparatory structures for termios revamp
2006-12-08 08:28:56 -08:00
termios.h
[PATCH] consolidate line discipline number definitions
2007-02-11 10:51:26 -08:00
thread_info.h
[MIPS] Disallow CpU exception in kernel again.
2007-04-20 14:58:37 +01:00
time.h
[MIPS] mips HPT cleanup: make clocksource_mips public
2006-11-30 01:14:49 +00:00
timex.h
[MIPS] Fix errors detected by "make headers_check"
2006-09-27 13:37:40 +01:00
titan_dep.h
[PATCH] mips: nuke trailing whitespace
2005-09-05 00:06:07 -07:00
tlb.h
…
tlbdebug.h
…
tlbflush.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
topology.h
…
traps.h
More AP / SP bits for the 34K, the Malta bits and things. Still wants
2005-10-29 19:31:53 +01:00
tx3912.h
…
types.h
[PATCH] Centralise definitions of sector_t and blkcnt_t
2006-12-04 19:41:15 -08:00
uaccess.h
[MIPS] Export __copy_user_inatomic.
2007-03-07 00:07:17 +00:00
ucontext.h
…
unaligned.h
…
unistd.h
[MIPS] Wire up ioprio_set and ioprio_get.
2007-03-07 00:07:18 +00:00
user.h
[MIPS] Fix errors detected by "make headers_check"
2006-09-27 13:37:40 +01:00
vga.h
[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use
2006-06-22 15:05:58 -07:00
vpe.h
[MIPS] kpsd and other AP/SP improvements.
2006-04-19 04:14:27 +02:00
war.h
[MIPS] Rename SNI_RM200_PCI to just SNI_RM preparing for more RM machines
2006-12-09 01:03:58 +00:00
watch.h
…
wbflush.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
xor.h
…
xxs1500.h
[PATCH] mips: nuke trailing whitespace
2005-09-05 00:06:07 -07:00