cifs: periodically query network interfaces from server
authorShyam Prasad N <sprasad@microsoft.com>
Mon, 6 Jun 2022 09:17:56 +0000 (09:17 +0000)
committerSteve French <stfrench@microsoft.com>
Thu, 23 Jun 2022 00:51:43 +0000 (19:51 -0500)
commit6e1c1c08cdf3d7d7b8c571c0f032a283af6ca024
tree6ee1a07b667229231b055c0225d3f7e28cbc9cc5
parentb54034a73baf9fe31fb3f218c17bd5308a27a1ca
cifs: periodically query network interfaces from server

Currently, we only query the server for network interfaces
information at the time of mount, and never afterwards.
This can be a problem, especially for services like Azure,
where the IP address of the channel endpoints can change
over time.

With this change, we schedule a 600s polling of this info
from the server for each tree connect.

An alternative for periodic polling was to do this only at
the time of reconnect. But this could delay the reconnect
time slightly. Also, there are some challenges w.r.t how
we have cifs_reconnect implemented today.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
fs/cifs/cifsglob.h
fs/cifs/cifsproto.h
fs/cifs/connect.c
fs/cifs/smb2ops.c