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ksmbd: smbd: change the default maximum read/write, receive size 

Due to restriction that cannot handle multiple
buffer descriptor structures, decrease the maximum
read/write size for Windows clients.

And set the maximum fragmented receive size
in consideration of the receive queue size.

Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Hyunchul Lee 2022-01-07 14:45:31 +09:00 committed by Steve French
parent c9f189271c
commit 4d02c4fdc0
1 changed files with 4 additions and 2 deletions
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4
fs/ksmbd/transport_rdma.c
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@ -80,7 +80,7 @@ static int smb_direct_max_fragmented_recv_size = 1024 * 1024;
/* The maximum single-message size which can be received */
static int smb_direct_max_receive_size = 8192;
static int smb_direct_max_read_write_size = 1024 * 1024;
static int smb_direct_max_read_write_size = 1048512;
static int smb_direct_max_outstanding_rw_ops = 8;
@ -1909,6 +1909,8 @@ static int smb_direct_prepare(struct ksmbd_transport *t)
le32_to_cpu(req->max_receive_size));
st->max_fragmented_send_size =
le32_to_cpu(req->max_fragmented_size);
st->max_fragmented_recv_size =
(st->recv_credit_max * st->max_recv_size) / 2;
ret = smb_direct_send_negotiate_response(st, ret);
out: