linux/include
Andy Adamson 0733d21338 nfsd41: exchange_id operation
Implement the exchange_id operation confoming to
http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-28

Based on the client provided name, hash a client id.
If a confirmed one is found, compare the op's creds and
verifier.  If the creds match and the verifier is different
then expire the old client (client re-incarnated), otherwise,
if both match, assume it's a replay and ignore it.

If an unconfirmed client is found, then copy the new creds
and verifer if need update, otherwise assume replay.

The client is moved to a confirmed state on create_session.

In the nfs41 branch set the exchange_id flags to
EXCHGID4_FLAG_USE_NON_PNFS | EXCHGID4_FLAG_SUPP_MOVED_REFER
(pNFS is not supported, Referrals are supported,
Migration is not.).

Address various scenarios from section 18.35 of the spec:

1. Check for EXCHGID4_FLAG_UPD_CONFIRMED_REC_A and set
   EXCHGID4_FLAG_CONFIRMED_R as appropriate.

2. Return error codes per 18.35.4 scenarios.

3. Update client records or generate new client ids depending on
   scenario.

Note: 18.35.4 case 3 probably still needs revisiting.  The handling
seems not quite right.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Andy Adamosn <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfsd41: use utsname for major_id (and copy to server_scope)]
[nfsd41: fix handling of various exchange id scenarios]
Signed-off-by: Mike Sager <sager@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfsd41: reverse use of EXCHGID4_INVAL_FLAG_MASK_A]
[simplify nfsd4_encode_exchange_id error handling]
[nfsd41: embed an xdr_netobj in nfsd4_exchange_id]
[nfsd41: return nfserr_serverfault for spa_how == SP4_MACH_CRED]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-04-03 17:41:15 -07:00
..
acpi ACPI: Enable bit 11 in _PDC to advertise hw coord 2009-02-07 00:41:14 -05:00
asm-arm
asm-frv FRV: __pte_to_swp_entry doesn't expand correctly 2009-02-17 14:05:30 -08:00
asm-generic Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-01-26 09:47:28 -08:00
asm-h8300
asm-m32r byteorder: make swab.h include asm/swab.h like a regular header 2009-01-14 19:56:50 -08:00
asm-mn10300 byteorder: make swab.h include asm/swab.h like a regular header 2009-01-14 19:56:50 -08:00
crypto crypto: shash - Fix tfm destruction 2009-02-05 16:51:25 +11:00
drm drm: fix EDID parser problem with positive/negative hsync/vsync 2009-03-11 12:18:48 +10:00
keys
linux nfsd41: exchange_id operation 2009-04-03 17:41:15 -07:00
math-emu
media Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2009-02-02 19:26:06 -08:00
mtd headers_check fix: mtd/inftl-user.h 2009-01-31 00:13:34 +05:30
net netns: Remove net_alive 2009-03-03 01:14:27 -08:00
pcmcia
rdma
rxrpc
scsi [SCSI] fcoe: Out of order tx frames was causing several check condition SCSI status 2009-03-10 09:09:21 -05:00
sound headers_check fix: sound/hdsp.h 2009-01-31 00:13:56 +05:30
trace sched, trace: update trace_sched_wakeup() 2008-12-25 13:10:21 +01:00
video atyfb: fix CONFIG_ namespace violations 2009-02-05 12:56:48 -08:00
xen xen: add xenfs to allow usermode <-> Xen interaction 2009-01-08 08:30:59 -08:00
Kbuild