linux.git/fs/smb/client, branch v6.4 Linux kernel source tree cifs: add a warning when the in-flight count goes negative 2023-06-14T15:15:05+00:00 Shyam Prasad N sprasad@microsoft.com 2023-06-09T17:46:56+00:00 e4645cc2f1e2d6f268bb8dcfac40997c52432aed We've seen the in-flight count go into negative with some internal stress testing in Microsoft. Adding a WARN when this happens, in hope of understanding why this happens when it happens. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Reviewed-by: Bharath SM <bharathsm@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> 
We've seen the in-flight count go into negative with some
internal stress testing in Microsoft.

Adding a WARN when this happens, in hope of understanding
why this happens when it happens.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
cifs: fix lease break oops in xfstest generic/098 2023-06-14T15:15:01+00:00 Steve French stfrench@microsoft.com 2023-06-11T16:23:32+00:00 c774e6779f38bf36f0cce65e30793704bab4b0d7 umount can race with lease break so need to check if tcon->ses->server is still valid to send the lease break response. Reviewed-by: Bharath SM <bharathsm@microsoft.com> Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Fixes: 59a556aebc43 ("SMB3: drop reference to cfile before sending oplock break") Signed-off-by: Steve French <stfrench@microsoft.com> 
umount can race with lease break so need to check if
tcon->ses->server is still valid to send the lease
break response.

Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Fixes: 59a556aebc43 ("SMB3: drop reference to cfile before sending oplock break")
Signed-off-by: Steve French <stfrench@microsoft.com>
cifs: fix max_credits implementation 2023-06-12T01:52:49+00:00 Shyam Prasad N sprasad@microsoft.com 2023-06-09T17:46:58+00:00 5e90aa21eb1372736e08cee0c0bf47735c5c4b95 The current implementation of max_credits on the client does not work because the CreditRequest logic for several commands does not take max_credits into account. Still, we can end up asking the server for more credits, depending on the number of credits in flight. For this, we need to limit the credits while parsing the responses too. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> 
The current implementation of max_credits on the client does
not work because the CreditRequest logic for several commands
does not take max_credits into account.

Still, we can end up asking the server for more credits, depending
on the number of credits in flight. For this, we need to
limit the credits while parsing the responses too.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
cifs: fix sockaddr comparison in iface_cmp 2023-06-12T01:52:49+00:00 Shyam Prasad N sprasad@microsoft.com 2023-06-09T17:46:59+00:00 2991b77409891e14a10b96899755c004b0c07edb iface_cmp used to simply do a memcmp of the two provided struct sockaddrs. The comparison needs to do more based on the address family. Similar logic was already present in cifs_match_ipaddr. Doing something similar now. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Steve French <stfrench@microsoft.com> 
iface_cmp used to simply do a memcmp of the two
provided struct sockaddrs. The comparison needs to do more
based on the address family. Similar logic was already
present in cifs_match_ipaddr. Doing something similar now.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
smb/client: print "Unknown" instead of bogus link speed value 2023-06-12T01:52:49+00:00 Enzo Matsumiya ematsumiya@suse.de 2023-06-09T21:29:59+00:00 50e63d6db6fd30a6dd9a33c49aa5b0bba36e1a92 The virtio driver for Linux guests will not set a link speed to its paravirtualized NICs. This will be seen as -1 in the ethernet layer, and when some servers (e.g. samba) fetches it, it's converted to an unsigned value (and multiplied by 1000 * 1000), so in client side we end up with: 1) Speed: 4294967295000000 bps in DebugData. This patch introduces a helper that returns a speed string (in Mbps or Gbps) if interface speed is valid (>= SPEED_10 and <= SPEED_800000), or "Unknown" otherwise. The reason to not change the value in iface->speed is because we don't know the real speed of the HW backing the server NIC, so let's keep considering these as the fastest NICs available. Also print "Capabilities: None" when the interface doesn't support any. Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de> Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> 
The virtio driver for Linux guests will not set a link speed to its
paravirtualized NICs.  This will be seen as -1 in the ethernet layer, and
when some servers (e.g. samba) fetches it, it's converted to an unsigned
value (and multiplied by 1000 * 1000), so in client side we end up with:

1)      Speed: 4294967295000000 bps

in DebugData.

This patch introduces a helper that returns a speed string (in Mbps or
Gbps) if interface speed is valid (>= SPEED_10 and <= SPEED_800000), or
"Unknown" otherwise.

The reason to not change the value in iface->speed is because we don't
know the real speed of the HW backing the server NIC, so let's keep
considering these as the fastest NICs available.

Also print "Capabilities: None" when the interface doesn't support any.

Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
cifs: print all credit counters in DebugData 2023-06-12T01:52:48+00:00 Shyam Prasad N sprasad@microsoft.com 2023-06-09T17:46:55+00:00 2a44b389664c193dc06cb37d9663d3c5a2a2b743 Output of /proc/fs/cifs/DebugData shows only the per-connection counter for the number of credits of regular type. i.e. the credits reserved for echo and oplocks are not displayed. There have been situations recently where having this info would have been useful. This change prints the credit counters of all three types: regular, echo, oplocks. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> 
Output of /proc/fs/cifs/DebugData shows only the per-connection
counter for the number of credits of regular type. i.e. the
credits reserved for echo and oplocks are not displayed.

There have been situations recently where having this info
would have been useful. This change prints the credit counters
of all three types: regular, echo, oplocks.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
cifs: fix status checks in cifs_tree_connect 2023-06-12T01:52:48+00:00 Shyam Prasad N sprasad@microsoft.com 2023-06-09T17:46:54+00:00 91f4480c41f56f7c723323cf7f581f1d95d9ffbc The ordering of status checks at the beginning of cifs_tree_connect is wrong. As a result, a tcon which is good may stay marked as needing reconnect infinitely. Fixes: 2f0e4f034220 ("cifs: check only tcon status on tcon related functions") Cc: stable@vger.kernel.org # 6.3 Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> 
The ordering of status checks at the beginning of
cifs_tree_connect is wrong. As a result, a tcon
which is good may stay marked as needing reconnect
infinitely.

Fixes: 2f0e4f034220 ("cifs: check only tcon status on tcon related functions")
Cc: stable@vger.kernel.org # 6.3
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
smb: remove obsolete comment 2023-06-12T01:52:48+00:00 鑫华 jixianghua@xfusion.com 2023-06-06T15:34:56+00:00 a5998a9ec3c03297a5b7f3df5c1979cd469a0da3 Because do_gettimeofday has been removed and replaced by ktime_get_real_ts64, So just remove the comment as it's not needed now. Signed-off-by: 鑫华 <jixianghua@xfusion.com> Signed-off-by: Steve French <stfrench@microsoft.com> 
Because do_gettimeofday has been removed and replaced by ktime_get_real_ts64,
So just remove the comment as it's not needed now.

Signed-off-by: 鑫华 <jixianghua@xfusion.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
cifs: address unused variable warning 2023-05-27T08:33:23+00:00 Steve French stfrench@microsoft.com 2023-05-27T08:33:23+00:00 fdd7d1fff4e3b97c4706f4c0e000a38b134b7ae5 Fix trivial unused variable warning (when SMB1 support disabled) "ioctl.c:324:17: warning: variable 'caps' set but not used [-Wunused-but-set-variable]" Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202305250056.oZhsJmdD-lkp@intel.com/ Signed-off-by: Steve French <stfrench@microsoft.com> 
Fix trivial unused variable warning (when SMB1 support disabled)

"ioctl.c:324:17: warning: variable 'caps' set but not used [-Wunused-but-set-variable]"

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202305250056.oZhsJmdD-lkp@intel.com/
Signed-off-by: Steve French <stfrench@microsoft.com>
smb: delete an unnecessary statement 2023-05-27T02:07:16+00:00 Dan Carpenter dan.carpenter@linaro.org 2023-05-26T12:01:33+00:00 396ac4c982f6d6cd7c0293a546a0ba5d77fe7f90 We don't need to set the list iterators to NULL before a list_for_each_entry() loop because they are assigned inside the macro. Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com> Signed-off-by: Steve French <stfrench@microsoft.com> 
We don't need to set the list iterators to NULL before a
list_for_each_entry() loop because they are assigned inside the
macro.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com>
Signed-off-by: Steve French <stfrench@microsoft.com>