> -----Original Message----- > From: Steve French [mailto:smfrench@xxxxxxxxx] > Sent: Wednesday, November 1, 2017 10:21 AM > To: Long Li <longli@xxxxxxxxxxxxx> > Cc: linux-cifs@xxxxxxxxxxxxxxx; Pavel Shilovskiy <pshilov@xxxxxxxxxxxxx> > Subject: Re: [Patch v5 01/21] CIFS: SMBD: Add SMB Direct protocol initial > values and constants > > Remember to run scripts/checkpatch - you had some trivial whitespace > errors in this one (also always remember to run sparse compile with > endian checking before submission ie make C=1 M=fs/cifs modules > CF=-D__CHECK_ENDIAN__) Thanks. I will fix those. > > On Wed, Oct 18, 2017 at 6:09 PM, Long Li <longli@xxxxxxxxxxxxxxxxxxxxxx> > wrote: > > From: Long Li <longli@xxxxxxxxxxxxx> > > > > To prepare for protocol implementation, add constants and > > user-configurable values for the SMB Direct protocol. > > > > Signed-off-by: Long Li <longli@xxxxxxxxxxxxx> > > --- > > fs/cifs/smbdirect.c | 77 > > +++++++++++++++++++++++++++++++++++++++++++++++++++++ > > fs/cifs/smbdirect.h | 21 +++++++++++++++ > > 2 files changed, 98 insertions(+) > > create mode 100644 fs/cifs/smbdirect.c create mode 100644 > > fs/cifs/smbdirect.h > > > > diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c new file mode > > 100644 index 0000000..d3c16f8 > > --- /dev/null > > +++ b/fs/cifs/smbdirect.c > > @@ -0,0 +1,77 @@ > > +/* > > + * Copyright (C) 2017, Microsoft Corporation. > > + * > > + * Author(s): Long Li <longli@xxxxxxxxxxxxx> > > + * > > + * This program is free software; you can redistribute it and/or modify > > + * it under the terms of the GNU General Public License as published by > > + * the Free Software Foundation; either version 2 of the License, or > > + * (at your option) any later version. > > + * > > + * This program is distributed in the hope that it will be useful, > > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See > > + * the GNU General Public License for more details. > > + */ > > +#include "smbdirect.h" > > + > > +/* SMBD version number */ > > +#define SMBD_V1 0x0100 > > + > > +/* Port numbers for SMBD transport */ > > +#define SMB_PORT 445 > > +#define SMBD_PORT 5445 > > + > > +/* Address lookup and resolve timeout in ms */ > > +#define RDMA_RESOLVE_TIMEOUT 5000 > > + > > +/* SMBD negotiation timeout in seconds */ #define > > +SMBD_NEGOTIATE_TIMEOUT 120 > > + > > +/* SMBD minimum receive size and fragmented sized defined in [MS- > SMBD] */ > > +#define SMBD_MIN_RECEIVE_SIZE 128 > > +#define SMBD_MIN_FRAGMENTED_SIZE 131072 > > + > > +/* > > + * Default maximum number of RDMA read/write outstanding on this > > +connection > > + * This value is possibly decreased during QP creation on hardware > > +limit */ > > +#define SMBD_CM_RESPONDER_RESOURCES 32 > > + > > +/* Maximum number of retries on data transfer operations */ > > +#define SMBD_CM_RETRY 6 > > +/* No need to retry on Receiver Not Ready since SMBD manages credits > */ > > +#define SMBD_CM_RNR_RETRY 0 > > + > > +/* > > + * User configurable initial values per SMBD transport connection > > + * as defined in [MS-SMBD] 3.1.1.1 > > + * Those may change after a SMBD negotiation */ > > +/* The local peer's maximum number of credits to grant to the peer */ > > +int smbd_receive_credit_max = 255; > > + > > +/* The remote peer's credit request of local peer */ int > > +smbd_send_credit_target = 255; > > + > > +/* The maximum single message size can be sent to remote peer */ int > > +smbd_max_send_size = 1364; > > + > > +/* The maximum fragmented upper-layer payload receive size supported > > +*/ int smbd_max_fragmented_recv_size = 1024 * 1024; > > + > > +/* The maximum single-message size which can be received */ int > > +smbd_max_receive_size = 8192; > > + > > +/* The timeout to initiate send of a keepalive message on idle */ int > > +smbd_keep_alive_interval = 120; > > + > > +/* > > + * User configurable initial values for RDMA transport > > + * The actual values used may be lower and are limited to hardware > > +capabilities */ > > +/* Default maximum number of SGEs in a RDMA write/read */ int > > +smbd_max_frmr_depth = 2048; > > + > > +/* If payload is less than this byte, use RDMA send/recv not > > +read/write */ int rdma_readwrite_threshold = 4096; > > diff --git a/fs/cifs/smbdirect.h b/fs/cifs/smbdirect.h new file mode > > 100644 index 0000000..c55f28b > > --- /dev/null > > +++ b/fs/cifs/smbdirect.h > > @@ -0,0 +1,21 @@ > > +/* > > + * Copyright (C) 2017, Microsoft Corporation. > > + * > > + * Author(s): Long Li <longli@xxxxxxxxxxxxx> > > + * > > + * This program is free software; you can redistribute it and/or modify > > + * it under the terms of the GNU General Public License as published by > > + * the Free Software Foundation; either version 2 of the License, or > > + * (at your option) any later version. > > + * > > + * This program is distributed in the hope that it will be useful, > > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See > > + * the GNU General Public License for more details. > > + */ > > +#ifndef _SMBDIRECT_H > > +#define _SMBDIRECT_H > > + > > +/* Default maximum number of SGEs in a RDMA send/recv */ > > +#define SMBDIRECT_MAX_SGE 16 > > +#endif > > -- > > 2.7.4 > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-cifs" > > in the body of a message to majordomo@xxxxxxxxxxxxxxx More > majordomo > > info at > > > https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fvger.k > > ernel.org%2Fmajordomo- > info.html&data=02%7C01%7Clongli%40microsoft.com% > > > 7Cdb316e8fda6945138c0c08d5214d000b%7C72f988bf86f141af91ab2d7cd011d > b47% > > > 7C1%7C0%7C636451536959242180&sdata=ZN2BbAM1NRyofTbdc6OvF9Gnvr8 > D7%2FGui > > XFnNlRE2bs%3D&reserved=0 > > > > -- > Thanks, > > Steve ��.n��������+%������w��{.n�����{�����ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f
