diff options
| author |   Long Li <longli@microsoft.com> | 2018-04-17 12:17:08 -0700 |
|---|---|---|
| committer |   Steve French <stfrench@microsoft.com> | 2018-04-25 11:15:53 -0500 |
| commit | bb4c0419476bd3982ba802f0f49de83cd79532d8 (patch) | |
| tree | 725f1a7c9a3e35146aabd56bc5a29740b802bd3c /fs/cifs/cifssmb.c | |
| parent | SMB311: Fix reconnect (diff) | |
| download | linux-dev-bb4c0419476bd3982ba802f0f49de83cd79532d8.tar.xz linux-dev-bb4c0419476bd3982ba802f0f49de83cd79532d8.zip | |
cifs: smbd: Don't use RDMA read/write when signing is used
SMB server will not sign data transferred through RDMA read/write. When
signing is used, it's a good idea to have all the data signed.
In this case, use RDMA send/recv for all data transfers. This will degrade
performance as this is not generally configured in RDMA environemnt. So
warn the user on signing and RDMA send/recv.
Signed-off-by: Long Li <longli@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/cifssmb.c')
| -rw-r--r-- | fs/cifs/cifssmb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 6d3e40d7029c..1529a088383d 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -455,6 +455,9 @@ cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) server->sign = true; } + if (cifs_rdma_enabled(server) && server->sign) + cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled"); + return 0; } |