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| author |   Shyam Prasad N <sprasad@microsoft.com> | 2022-06-06 09:17:56 +0000 |
|---|---|---|
| committer |   Steve French <stfrench@microsoft.com> | 2022-06-22 19:51:43 -0500 |
| commit | 6e1c1c08cdf3d7d7b8c571c0f032a283af6ca024 (patch) | |
| tree | 6ee1a07b667229231b055c0225d3f7e28cbc9cc5 /fs/cifs/cifsglob.h | |
| parent | cifs: during reconnect, update interface if necessary (diff) | |
| download | linux-dev-6e1c1c08cdf3d7d7b8c571c0f032a283af6ca024.tar.xz linux-dev-6e1c1c08cdf3d7d7b8c571c0f032a283af6ca024.zip | |
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>
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 7fc2addc95a3..a643c84ff1e9 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -80,6 +80,9 @@ #define SMB_DNS_RESOLVE_INTERVAL_MIN 120 #define SMB_DNS_RESOLVE_INTERVAL_DEFAULT 600 +/* smb multichannel query server interfaces interval in seconds */ +#define SMB_INTERFACE_POLL_INTERVAL 600 + /* maximum number of PDUs in one compound */ #define MAX_COMPOUND 5 @@ -1255,6 +1258,7 @@ struct cifs_tcon { #ifdef CONFIG_CIFS_DFS_UPCALL struct list_head ulist; /* cache update list */ #endif + struct delayed_work query_interfaces; /* query interfaces workqueue job */ }; /* |