---
fs/cifs/smb2ops.c | 36 ++++++++++++++++++++++++++++++++++++
1 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index d81e1da..c0997ad 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -157,6 +157,40 @@ smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
return rc;
}
+static unsigned int
+smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
+{
+ struct TCP_Server_Info *server = tcon->ses->server;
+ unsigned int wsize;
+
+ /* start with specified wsize, or default */
+ wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
+ wsize = min_t(unsigned int, wsize, server->max_write);
+ /*
+ * limit write size to 2 ** 16, because we don't support multicredit
+ * requests now.
+ */
+ wsize = min_t(unsigned int, wsize, 2 << 15);
+ return wsize;
+}
+
+static unsigned int
+smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
+{
+ struct TCP_Server_Info *server = tcon->ses->server;
+ unsigned int rsize;
+
+ /* start with specified rsize, or default */
+ rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
+ rsize = min_t(unsigned int, rsize, server->max_read);
+ /*
+ * limit write size to 2 ** 16, because we don't support multicredit
+ * requests now.
+ */
+ rsize = min_t(unsigned int, rsize, 2 << 15);
+ return rsize;
+}
+
static int
smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const char *full_path)
@@ -352,6 +386,8 @@ struct smb_version_operations smb21_operations = {
.print_stats = smb2_print_stats,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
+ .negotiate_wsize = smb2_negotiate_wsize,
+ .negotiate_rsize = smb2_negotiate_rsize,
.sess_setup = SMB2_sess_setup,
.logoff = SMB2_logoff,
.tree_connect = SMB2_tcon,
--
1.7.1
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