CIFS: Propagate min offload along with other parameters from primary to secondary channels.

commit 1821e90be08e7d4a54cd167dd818d80d06e064e9 upstream.

In a multichannel setup, it was observed that a few fields were not being
copied over to the secondary channels, which impacted performance in cases
where these options were relevant but not properly synchronized. To address
this, this patch introduces copying the following parameters from the
primary channel to the secondary channels:

- min_offload
- compression.requested
- dfs_conn
- ignore_signature
- leaf_fullpath
- noblockcnt
- retrans
- sign

By copying these parameters, we ensure consistency across channels and
prevent performance degradation due to missing or outdated settings.

Cc: stable@vger.kernel.org
Signed-off-by: Aman <aman1@microsoft.com>
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

fs/smb/client/connect.c

@@ -1722,6 +1722,7 @@ cifs_get_tcp_session(struct smb3_fs_context *ctx,
 	/* Grab netns reference for this server. */
 	cifs_set_net_ns(tcp_ses, get_net(current->nsproxy->net_ns));
 
+	tcp_ses->sign = ctx->sign;
 	tcp_ses->conn_id = atomic_inc_return(&tcpSesNextId);
 	tcp_ses->noblockcnt = ctx->rootfs;
 	tcp_ses->noblocksnd = ctx->noblocksnd || ctx->rootfs;

fs/smb/client/sess.c

@@ -550,6 +550,13 @@ cifs_ses_add_channel(struct cifs_ses *ses,
 	ctx->sockopt_tcp_nodelay = ses->server->tcp_nodelay;
 	ctx->echo_interval = ses->server->echo_interval / HZ;
 	ctx->max_credits = ses->server->max_credits;
+	ctx->min_offload = ses->server->min_offload;
+	ctx->compress = ses->server->compression.requested;
+	ctx->dfs_conn = ses->server->dfs_conn;
+	ctx->ignore_signature = ses->server->ignore_signature;
+	ctx->leaf_fullpath = ses->server->leaf_fullpath;
+	ctx->rootfs = ses->server->noblockcnt;
+	ctx->retrans = ses->server->retrans;
 
 	/*
 	 * This will be used for encoding/decoding user/domain/pw