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On cifs_reconnect, make sure that DNS resolution happens again.
It could be the cause of connection to go dead in the first place.
This also contains the fix for a build issue identified by Intel bot.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
CC: <stable@vger.kernel.org> # 5.11+
Signed-off-by: Steve French <stfrench@microsoft.com>
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Correct references to fs/cifs/README which has been replaced by
Documentation/filesystems/admin-guide/cifs/usage.rst, and also
correct a typo.
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Register a new generic netlink family to talk to the witness service
userspace daemon.
Signed-off-by: Samuel Cabrero <scabrero@suse.de>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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smbdirect support (SMB3 over RDMA) should be enabled by
default in many configurations.
It is not experimental and is stable enough and has enough
performance benefits to recommend that it be configured by
default. Change the "If unsure N" to "If unsure Y" in
the description of the configuration parameter.
Acked-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Pull cifs updates from Steve French:
"Various cifs/smb3 fixes (including for share deleted cases) and
features including improved encrypted read performance, and various
debugging improvements.
Note that since I am at a test event this week with the Samba team,
and at the annual Storage Developer Conference/SMB3 Plugfest test
event next week a higher than usual number of fixes is expected later
next week as other features in progress get additional testing and
review during these two events"
* tag '5.4-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: (38 commits)
cifs: update internal module version number
cifs: modefromsid: write mode ACE first
cifs: cifsroot: add more err checking
smb3: add missing worker function for SMB3 change notify
cifs: Add support for root file systems
cifs: modefromsid: make room for 4 ACE
smb3: fix potential null dereference in decrypt offload
smb3: fix unmount hang in open_shroot
smb3: allow disabling requesting leases
smb3: improve handling of share deleted (and share recreated)
smb3: display max smb3 requests in flight at any one time
smb3: only offload decryption of read responses if multiple requests
cifs: add a helper to find an existing readable handle to a file
smb3: enable offload of decryption of large reads via mount option
smb3: allow parallelizing decryption of reads
cifs: add a debug macro that prints \\server\share for errors
smb3: fix signing verification of large reads
smb3: allow skipping signature verification for perf sensitive configurations
smb3: add dynamic tracepoints for flush and close
smb3: log warning if CSC policy conflicts with cache mount option
...
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Introduce a new CONFIG_CIFS_ROOT option to handle root file systems
over a SMB share.
In order to mount the root file system during the init process, make
cifs.ko perform non-blocking socket operations while mounting and
accessing it.
Cc: Steve French <smfrench@gmail.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Paulo Alcantara (SUSE) <paulo@paulo.ac>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Some legacy code in the CIFS driver uses single DES to calculate
some password hash, and uses the crypto cipher API to do so. Given
that there is no point in invoking an accelerated cipher for doing
56-bit symmetric encryption on a single 8-byte block of input, the
flexibility of the crypto cipher API does not add much value here,
and so we're much better off using a library call into the generic
C implementation.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Pull cifs updates from Steve French:
"Fixes (three for stable) and improvements including much faster
encryption (SMB3.1.1 GCM)"
* tag '4.3-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: (27 commits)
smb3: smbdirect no longer experimental
cifs: fix crash in smb2_compound_op()/smb2_set_next_command()
cifs: fix crash in cifs_dfs_do_automount
cifs: fix parsing of symbolic link error response
cifs: refactor and clean up arguments in the reparse point parsing
SMB3: query inode number on open via create context
smb3: Send netname context during negotiate protocol
smb3: do not send compression info by default
smb3: add new mount option to retrieve mode from special ACE
smb3: Allow query of symlinks stored as reparse points
cifs: Fix a race condition with cifs_echo_request
cifs: always add credits back for unsolicited PDUs
fs: cifs: cifsssmb: Change return type of convert_ace_to_cifs_ace
add some missing definitions
cifs: fix typo in debug message with struct field ia_valid
smb3: minor cleanup of compound_send_recv
CIFS: Fix module dependency
cifs: simplify code by removing CONFIG_CIFS_ACL ifdef
cifs: Fix check for matching with existing mount
cifs: Properly handle auto disabling of serverino option
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clarify Kconfig to indicate that smb direct
(SMB3 over RDMA) is no longer experimental.
Over the last three releases Long Li has
fixed various problems uncovered by xfstesting.
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"Here is the crypto update for 5.3:
API:
- Test shash interface directly in testmgr
- cra_driver_name is now mandatory
Algorithms:
- Replace arc4 crypto_cipher with library helper
- Implement 5 way interleave for ECB, CBC and CTR on arm64
- Add xxhash
- Add continuous self-test on noise source to drbg
- Update jitter RNG
Drivers:
- Add support for SHA204A random number generator
- Add support for 7211 in iproc-rng200
- Fix fuzz test failures in inside-secure
- Fix fuzz test failures in talitos
- Fix fuzz test failures in qat"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (143 commits)
crypto: stm32/hash - remove interruptible condition for dma
crypto: stm32/hash - Fix hmac issue more than 256 bytes
crypto: stm32/crc32 - rename driver file
crypto: amcc - remove memset after dma_alloc_coherent
crypto: ccp - Switch to SPDX license identifiers
crypto: ccp - Validate the the error value used to index error messages
crypto: doc - Fix formatting of new crypto engine content
crypto: doc - Add parameter documentation
crypto: arm64/aes-ce - implement 5 way interleave for ECB, CBC and CTR
crypto: arm64/aes-ce - add 5 way interleave routines
crypto: talitos - drop icv_ool
crypto: talitos - fix hash on SEC1.
crypto: talitos - move struct talitos_edesc into talitos.h
lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE
crypto/NX: Set receive window credits to max number of CRBs in RxFIFO
crypto: asymmetric_keys - select CRYPTO_HASH where needed
crypto: serpent - mark __serpent_setkey_sbox noinline
crypto: testmgr - dynamically allocate crypto_shash
crypto: testmgr - dynamically allocate testvec_config
crypto: talitos - eliminate unneeded 'done' functions at build time
...
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KEYS is required not that CONFIG_CIFS_ACL is always on
and the ifdef for it removed.
Signed-off-by: Steve French <stfrench@microsoft.com>
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SMB3 ACL support is needed for many use cases now and should not be
ifdeffed out, even for SMB1 (CIFS). Remove the CONFIG_CIFS_ACL
ifdef so ACL support is always built into cifs.ko
Signed-off-by: Steve French <stfrench@microsoft.com>
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Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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The CIFS code uses the sync skcipher API to invoke the ecb(arc4) skcipher,
of which only a single generic C code implementation exists. This means
that going through all the trouble of using scatterlists etc buys us
very little, and we're better off just invoking the arc4 library directly.
This also reverts commit 5f4b55699aaf ("CIFS: Fix BUG() in calc_seckey()"),
since it is no longer necessary to allocate sec_key on the heap.
Cc: linux-cifs@vger.kernel.org
Cc: Steve French <sfrench@samba.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Clarify the use of the CONFIG_DFS_UPCALL for DNS name resolution
when server ip addresses change (e.g. on long running mounts)
Signed-off-by: Steve French <stfrench@microsoft.com>
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Missing a dependency. Shouldn't show cifs posix extensions
in Kconfig if CONFIG_CIFS_ALLOW_INSECURE_DIALECTS (ie SMB1
protocol) is disabled.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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This got lost in commit 0fdfef9aa7ee68ddd508aef7c98630cfc054f8d6,
which removed CONFIG_CIFS_SMB311.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Fixes: 0fdfef9aa7ee68ddd ("smb3: simplify code by removing CONFIG_CIFS_SMB311")
CC: Stable <stable@vger.kernel.org>
CC: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
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CONFIG_CIFS_STATS should always be enabled as Pavel recently
noted. Simple statistics are not a significant performance hit,
and removing the ifdef simplifies the code slightly.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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We really, really want to be encouraging use of secure dialects,
and SMB3.1.1 offers useful security features, and will soon
be the recommended dialect for many use cases. Simplify the code
by removing the CONFIG_CIFS_SMB311 ifdef so users don't disable
it in the build, and create compatibility and/or security issues
with modern servers - many of which have been supporting this
dialect for multiple years.
Also clarify some of the Kconfig text for cifs.ko about
SMB3.1.1 and current supported features in the module.
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
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allow disabling cifs (SMB1 ie vers=1.0) and vers=2.0 in the
config for the build of cifs.ko if want to always prevent mounting
with these less secure dialects.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
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Several subsystems depend on INFINIBAND_ADDR_TRANS, which in turn depends
on INFINIBAND. However, when with CONFIG_INIFIBAND=m, this leads to a
link error when another driver using it is built-in. The
INFINIBAND_ADDR_TRANS dependency is insufficient here as this is
a 'bool' symbol that does not force anything to be a module in turn.
fs/cifs/smbdirect.o: In function `smbd_disconnect_rdma_work':
smbdirect.c:(.text+0x1e4): undefined reference to `rdma_disconnect'
net/9p/trans_rdma.o: In function `rdma_request':
trans_rdma.c:(.text+0x7bc): undefined reference to `rdma_disconnect'
net/9p/trans_rdma.o: In function `rdma_destroy_trans':
trans_rdma.c:(.text+0x830): undefined reference to `ib_destroy_qp'
trans_rdma.c:(.text+0x858): undefined reference to `ib_dealloc_pd'
Fixes: 9533b292a7ac ("IB: remove redundant INFINIBAND kconfig dependencies")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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INFINIBAND_ADDR_TRANS depends on INFINIBAND. So there's no need for
options which depend INFINIBAND_ADDR_TRANS to also depend on INFINIBAND.
Remove the unnecessary INFINIBAND depends.
Signed-off-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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CIFS_SMB_DIRECT code depends on INFINIBAND_ADDR_TRANS provided symbols.
So declare the kconfig dependency. This is necessary to allow for
enabling INFINIBAND without INFINIBAND_ADDR_TRANS.
Signed-off-by: Greg Thelen <gthelen@google.com>
Cc: Tarick Bedeir <tarick@google.com>
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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SMB3.1.1 is a very important dialect, with much improved security.
We can remove the ExPERIMENTAL comments about it. It is widely
supported by servers.
Signed-off-by: Steve French <smfrench@gmail.com>
CC: Stable <stable@vger.kernel.org>
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* prepare for SMB3.11 pre-auth integrity
* enable sha512 when SMB311 is enabled in Kconfig
* add sha512 as a soft dependency
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <smfrench@gmail.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
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Pull documentation updates from Jonathan Corbet:
"Documentation updates for 4.16.
New stuff includes refcount_t documentation, errseq documentation,
kernel-doc support for nested structure definitions, the removal of
lots of crufty kernel-doc support for unused formats, SPDX tag
documentation, the beginnings of a manual for subsystem maintainers,
and lots of fixes and updates.
As usual, some of the changesets reach outside of Documentation/ to
effect kerneldoc comment fixes. It also adds the new LICENSES
directory, of which Thomas promises I do not need to be the
maintainer"
* tag 'docs-4.16' of git://git.lwn.net/linux: (65 commits)
linux-next: docs-rst: Fix typos in kfigure.py
linux-next: DOC: HWPOISON: Fix path to debugfs in hwpoison.txt
Documentation: Fix misconversion of #if
docs: add index entry for networking/msg_zerocopy
Documentation: security/credentials.rst: explain need to sort group_list
LICENSES: Add MPL-1.1 license
LICENSES: Add the GPL 1.0 license
LICENSES: Add Linux syscall note exception
LICENSES: Add the MIT license
LICENSES: Add the BSD-3-clause "Clear" license
LICENSES: Add the BSD 3-clause "New" or "Revised" License
LICENSES: Add the BSD 2-clause "Simplified" license
LICENSES: Add the LGPL-2.1 license
LICENSES: Add the LGPL 2.0 license
LICENSES: Add the GPL 2.0 license
Documentation: Add license-rules.rst to describe how to properly identify file licenses
scripts: kernel_doc: better handle show warnings logic
fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at
doc: md: Fix a file name to md-fault.c in fault-injection.txt
errseq: Add to documentation tree
...
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Prevent build errors when CIFS=y and INFINIBAND=m.
fs/cifs/smbdirect.o: In function `smbd_qp_async_error_upcall':
smbdirect.c:(.text+0x28c): undefined reference to `ib_event_msg'
fs/cifs/smbdirect.o: In function `smbd_destroy_rdma_work':
smbdirect.c:(.text+0xfde): undefined reference to `ib_drain_qp'
smbdirect.c:(.text+0xfea): undefined reference to `rdma_destroy_qp'
smbdirect.c:(.text+0x12a0): undefined reference to `ib_free_cq'
smbdirect.c:(.text+0x12ac): undefined reference to `ib_free_cq'
smbdirect.c:(.text+0x12b8): undefined reference to `ib_dealloc_pd'
smbdirect.c:(.text+0x12c4): undefined reference to `rdma_destroy_id'
fs/cifs/smbdirect.o: In function `_smbd_get_connection':
smbdirect.c:(.text+0x168c): undefined reference to `rdma_create_id'
smbdirect.c:(.text+0x1713): undefined reference to `rdma_resolve_addr'
smbdirect.c:(.text+0x1780): undefined reference to `rdma_resolve_route'
smbdirect.c:(.text+0x17e3): undefined reference to `rdma_destroy_id'
smbdirect.c:(.text+0x183d): undefined reference to `rdma_destroy_id'
smbdirect.c:(.text+0x199d): undefined reference to `ib_alloc_cq'
smbdirect.c:(.text+0x19d9): undefined reference to `ib_alloc_cq'
smbdirect.c:(.text+0x1a89): undefined reference to `rdma_create_qp'
smbdirect.c:(.text+0x1b3c): undefined reference to `rdma_connect'
smbdirect.c:(.text+0x2538): undefined reference to `rdma_destroy_qp'
smbdirect.c:(.text+0x2549): undefined reference to `ib_free_cq'
smbdirect.c:(.text+0x255a): undefined reference to `ib_free_cq'
smbdirect.c:(.text+0x2563): undefined reference to `ib_dealloc_pd'
smbdirect.c:(.text+0x256c): undefined reference to `rdma_destroy_id'
smbdirect.c:(.text+0x25f0): undefined reference to `__ib_alloc_pd'
smbdirect.c:(.text+0x26bb): undefined reference to `rdma_disconnect'
fs/cifs/smbdirect.o: In function `smbd_disconnect_rdma_work':
smbdirect.c:(.text+0x62): undefined reference to `rdma_disconnect'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Steve French <sfrench@samba.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org (moderated for non-subscribers)
Signed-off-by: Steve French <smfrench@gmail.com>
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Build SMB Direct code when this option is set.
Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Ronnie Sahlberg <lsahlber.redhat.com>
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This link is replicated in most filesystems' config stanzas. Referring
to an archived version of that site is pointless as it mostly deals with
patches; user documentation is available elsewhere.
Signed-off-by: Adam Borowski <kilobyte@angband.pl>
CC: Alexander Viro <viro@zeniv.linux.org.uk>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Acked-by: David Sterba <dsterba@suse.com>
Acked-by: "Yan, Zheng" <zyan@redhat.com>
Acked-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Acked-by: Steve French <smfrench@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Some dependencies were lost when CIFS_SMB2 was merged into CIFS.
Fixes: 2a38e12053b7 ("[SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred")
Signed-off-by: Benjamin Gilbert <benjamin.gilbert@coreos.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <smfrench@gmail.com>
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Remove the CONFIG_CIFS_SMB2 ifdef and Kconfig option since they
must always be on now.
For various security reasons, SMB3 and later are STRONGLY preferred
over CIFS and older dialects, and SMB3 (and later) will now be
the default dialects so we do not want to allow them to be
ifdeffed out.
In the longer term, we may be able to make older CIFS support
disableable in Kconfig with a new set of #ifdef, but we always
want SMB3 and later support enabled.
Signed-off-by: Steven French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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Add new config option that dumps AES keys to the console when they are
generated. This is obviously for debugging purposes only, and should not
be enabled otherwise.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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This change allows to encrypt packets if it is required by a server
for SMB sessions or tree connections.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
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The sha256 and cmac crypto modules are only needed for SMB2+, so move
the select statements to config CIFS_SMB2. Also select CRYPTO_AES
there as SMB2+ needs it.
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Steve French <sfrench@samba.org>
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* CIFS_SMB2 depends on CIFS, which depends on INET and selects NLS. So
these dependencies do not need to be repeated for CIFS_SMB2.
* CIFS_SMB311 depends on CIFS_SMB2, which depends on INET. So this
dependency doesn't need to be repeated for CIFS_SMB311.
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Steve French <sfrench@samba.org>
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Parses and recognizes "vers=3.1.1" on cifs mount and allows sending
0x0311 as a new CIFS/SMB3 dialect. Subsequent patches will add
the new negotiate contexts and updated session setup
Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Steve French <steve.french@primarydata.com>
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Clarify descriptions of SMB2 and SMB3 support in Kconfig
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org>
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SMB3 uses a much faster method of signing (which is also better in other ways),
AES-CMAC. With the kernel now supporting AES-CMAC since last release, we
are overdue to allow SMB3 signing (today only CIFS and SMB2 and SMB2.1,
but not SMB3 and SMB3.1 can sign) - and we need this also for checking
secure negotation and also per-share encryption (two other new SMB3 features
which we need to implement).
This patch needs some work in a few areas - for example we need to
move signing for SMB2/SMB3 from per-socket to per-user (we may be able to
use the "nosharesock" mount option in the interim for the multiuser case),
and Shirish found a bug in the earlier authentication overhaul
(setting signing flags properly) - but those can be done in followon
patches.
Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.
CC: Steve French <sfrench@samba.org>
CC: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This can reduce the size of the module by ~120KB which
could be useful for embedded systems.
$ size fs/cifs/built-in.o*
text data bss dec hex filename
388567 34459 100440 523466 7fcca fs/cifs/built-in.o.new
495970 34599 117904 648473 9e519 fs/cifs/built-in.o.old
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
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make menuconfig for cifs shows multiple entries toward
the end of the list with the incorrect indentation
(probably a bug in Kconfig parsing of items
that are dependant on the module (cifs=m instead of
just CONFIG_CIFS). This patch fixes the indentation
of all but the last entry (CIFS_ACL) which I don't
know how to fix. It also clarifies wording in
two places
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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Now that the merge of the remaining pieces needed for
SMB2 (SMB2.1 dialect) are in, and most test cases pass,
we can consider SMB2.1 EXPERIMENTAL rather than "BROKEN."
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <smfrench@gmail.com>
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Use hmac-sha256 and rather than hmac-md5 that is used for CIFS/SMB.
Signature field in SMB2 header is 16 bytes instead of 8 bytes.
Automatically enable signing by client when requested by the server
when signing ability is available to the client.
Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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SMB2 is the followon to the CIFS (and SMB) protocols
and the default for Windows since Windows Vista, and also
now implemented by various non-Windows servers. SMB2
is more secure, has various performance advantages, including
larger i/o sizes, flow control, better caching model and more.
SMB2 also resolves some scalability limits in the CIFS
protocol and adds many new features while being much
simpler (only a few dozen commands instead of hundreds)
and since the protocol is clearer it is also more consistently
implemented across servers and thus easier to optimize.
After much discussion with Jeff Layton, Jeremy Allison
and others at Connectathon, we decided to move the SMB2
code from a distinct .ko and fstype into distinct
C files that optionally build in cifs.ko. As a result
the Kconfig gets simpler.
To avoid destabilizing CIFS, the SMB2 code is going
to be moved into its own experimental CONFIG_CIFS_SMB2 ifdef
as it is merged and rereviewed. The changes to stable
CIFS (builds with the SMB2 ifdef off) are expected to be
fairly small.
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
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Removed the dependency on CONFIG_EXPERIMENTAL but forgot to update
the text description to be consistent.
Signed-off-by: Steve French <smfrench@gmail.com>
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CIFS ACL support and FSCACHE support have been in long enough
to be no longer considered experimental. Remove obsolete Kconfig
dependency.
Signed-off-by: Steve French <sfrench@us.ibm.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
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This does not work properly with CIFS as current servers do not
enable support for the FILE_OPEN_BY_FILE_ID on SMB NTCreateX
and not all NFS clients handle ESTALE.
For now, it just plain doesn't work. Mark it BROKEN to discourage
distros from enabling it.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
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Build fails if CONFIG_KEYS is not selected.
Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>
Reviewed-by: Shirish Pargaonkar <shirishp@us.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
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