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b5af3f30a7
freebsd/sys
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Conrad Meyer b5af3f30a7 nfsclient: Protest loudly when GETATTR responses are invalid 
BROKEN NFS SERVER OR MIDDLEWARE: Certain WAN "accelerators" attempt to cache
NFS GETATTR traffic, but actually corrupt it (e.g., responding to requests
with attributes for totally different files).

Warn very verbosely when this is detected. Linux' NFS client has a similar
warning.

Adds a sysctl/tunable (vfs.nfs.fileid_maxwarnings) to configure the quantity
of warnings; default to 10. (Zero disables; -1 is unlimited.)

Adds a failpoint to aid in validating the warning / behavior with a
non-broken server. Use something like:

    sysctl 'debug.fail_point.nfscl_force_fileid_warning=10%return(1)'

Reviewed by:	rmacklem
Approved by:	markj (mentor)
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D3304
2015-08-05 22:27:30 +00:00
..
amd64 Rationalize BSD license on sys/*/include/in_cksum.h 2015-08-05 19:05:12 +00:00
arm Rationalize BSD license on sys/*/include/float.h 2015-08-05 17:05:35 +00:00
arm64 Rationalize BSD license on sys/*/include/in_cksum.h 2015-08-05 19:05:12 +00:00
boot Fix a problem which made loader(8) load non-kld files twice. 2015-08-03 16:27:36 +00:00
bsm
cam Pass SYNCHRONIZE CACHE command parameters to backends. 2015-08-05 22:24:49 +00:00
cddl Remove a couple of unused fields from the FBT probe struct. 2015-08-03 17:39:36 +00:00
compat Correct the previous commit: remove the DECLARE_MODULE(). 2015-08-05 16:53:49 +00:00
conf cxgbe(4): Update T5 and T4 firmwares bundled with the driver to 1.14.4.0. The 2015-08-05 19:45:11 +00:00
contrib Add a missing method - ath_hal_settsf64(). 2015-08-05 21:16:12 +00:00
crypto const'ify an arg that we don't update... 2015-07-29 23:37:15 +00:00
ddb Various changes to the registers displayed in DDB for x86. 2015-07-22 01:09:02 +00:00
dev Add a hack-around to this fatal taskqueue running whilst the NIC 2015-08-05 21:22:25 +00:00
fs nfsclient: Protest loudly when GETATTR responses are invalid 2015-08-05 22:27:30 +00:00
gdb CALLOUT_MPSAFE has lost its meaning since r141428, i.e., for more than ten 2015-05-22 17:05:21 +00:00
geom Fix panic triggered by code like this: 2015-08-04 10:40:08 +00:00
gnu
i386 Rationalize BSD license on sys/*/include/in_cksum.h 2015-08-05 19:05:12 +00:00
isa
kern Allow the creation of kqueues with a restricted set of Capsicum rights. 2015-08-05 07:36:50 +00:00
kgssapi
libkern Remove checks for __ARM_EABI__, we only build for EABI now. 2015-07-09 21:02:40 +00:00
mips Rationalize BSD license on sys/*/include/in_cksum.h 2015-08-05 19:05:12 +00:00
modules cxgbe(4): Update T5 and T4 firmwares bundled with the driver to 1.14.4.0. The 2015-08-05 19:45:11 +00:00
net Remove the mtx_sleep() from the kqueue f_event filter. 2015-08-03 22:14:45 +00:00
net80211 Break out the current 802.11 software scan methods into an indirect table. 2015-06-08 02:35:43 +00:00
netgraph * Address review (and add a bit myself). 2015-07-12 18:14:38 +00:00
netinet The mbuf parameter to ip_output_pfil() must be an output parameter since 2015-08-03 17:47:02 +00:00
netinet6 Decompose TCP INP_INFO lock to increase short-lived TCP connections scalability: 2015-08-03 12:13:54 +00:00
netipsec Make IPsec work with AES-GCM and AES-ICM (aka CTR) in OCF... IPsec 2015-08-04 17:47:11 +00:00
netnatm
netpfil Reduce overhead of ipfw's me6 opcode. 2015-07-29 10:53:42 +00:00
netsmb
nfs
nfsclient
nfsserver
nlm
ofed Avoid calling into the random subsystem before it is initialized. 2015-08-04 09:45:10 +00:00
opencrypto Make IPsec work with AES-GCM and AES-ICM (aka CTR) in OCF... IPsec 2015-08-04 17:47:11 +00:00
pc98 Spell crypto correctly. 2015-07-14 10:47:56 +00:00
powerpc Rationalize BSD license on sys/*/include/in_cksum.h 2015-08-05 19:05:12 +00:00
rpc Remove useless acquire semantic from the atomic_add operation before 2015-07-28 06:58:10 +00:00
security fd: make 'rights' a manadatory argument to fget* functions 2015-07-05 19:05:16 +00:00
sparc64 Rationalize BSD license on sys/*/include/in_cksum.h 2015-08-05 19:05:12 +00:00
sys Allow the creation of kqueues with a restricted set of Capsicum rights. 2015-08-05 07:36:50 +00:00
teken
tools
ufs - Make 'struct buf *buf' private to vfs_bio.c. Having a global variable 2015-07-29 02:26:57 +00:00
vm Properly sort the function declarations added in r286296 2015-08-05 10:48:32 +00:00
x86 Fix more style issues. 2015-08-05 17:21:42 +00:00
xdr
xen Add support for Xen blkif indirect segment I/Os. This makes it possible for 2015-07-30 03:50:01 +00:00
Makefile Kill EoL whitespace. 2015-05-29 14:03:07 +00:00