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libcxgb: add library module for Chelsio drivers 

Add common library module(libcxgb.ko) for
Chelsio drivers to remove duplicate code.

Code for iSCSI DDP Page Pod Manager is moved
from cxgb4.ko to libcxgb.ko. Earlier only cxgbit.ko
was using this code, now cxgb3i and cxgb4i will
also use common Page Pod manager code.

In future this module will have common connection
management and hardware specific code that can be
shared by multiple Chelsio drivers.

Signed-off-by: Varun Prakash <varun@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Varun Prakash 2016-07-21 22:57:14 +05:30 committed by David S. Miller
parent 9e0b27fe5a
commit b8b9d81b36
9 changed files with 81 additions and 26 deletions
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16
drivers/net/ethernet/chelsio/Kconfig
View File

@ -96,17 +96,6 @@ config CHELSIO_T4_DCB
If unsure, say N.
config CHELSIO_T4_UWIRE
bool "Unified Wire Support for Chelsio T5 cards"
default n
depends on CHELSIO_T4
---help---
Enable unified-wire offload features.
Say Y here if you want to enable unified-wire over Ethernet
in the driver.
If unsure, say N.
config CHELSIO_T4_FCOE
bool "Fibre Channel over Ethernet (FCoE) Support for Chelsio T5 cards"
default n
@ -137,4 +126,9 @@ config CHELSIO_T4VF
To compile this driver as a module choose M here; the module
will be called cxgb4vf.
config CHELSIO_LIB
tristate
---help---
Common library for Chelsio drivers.
endif # NET_VENDOR_CHELSIO

1
drivers/net/ethernet/chelsio/Makefile
View File

@ -6,3 +6,4 @@ obj-$(CONFIG_CHELSIO_T1) += cxgb/
obj-$(CONFIG_CHELSIO_T3) += cxgb3/
obj-$(CONFIG_CHELSIO_T4) += cxgb4/
obj-$(CONFIG_CHELSIO_T4VF) += cxgb4vf/
obj-$(CONFIG_CHELSIO_LIB) += libcxgb/

1
drivers/net/ethernet/chelsio/cxgb4/Makefile
View File

@ -7,5 +7,4 @@ obj-$(CONFIG_CHELSIO_T4) += cxgb4.o
cxgb4-objs := cxgb4_main.o l2t.o t4_hw.o sge.o clip_tbl.o cxgb4_ethtool.o
cxgb4-$(CONFIG_CHELSIO_T4_DCB) += cxgb4_dcb.o
cxgb4-$(CONFIG_CHELSIO_T4_FCOE) += cxgb4_fcoe.o
cxgb4-$(CONFIG_CHELSIO_T4_UWIRE) += cxgb4_ppm.o
cxgb4-$(CONFIG_DEBUG_FS) += cxgb4_debugfs.o

3
drivers/net/ethernet/chelsio/libcxgb/Makefile Normal file
View File

@ -0,0 +1,3 @@
obj-$(CONFIG_CHELSIO_LIB) += libcxgb.o
libcxgb-y := libcxgb_ppm.o

43
drivers/net/ethernet/chelsio/cxgb4/cxgb4_ppm.c → drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c
View File

@ -1,15 +1,43 @@
/*
* cxgb4_ppm.c: Chelsio common library for T4/T5 iSCSI PagePod Manager
* libcxgb_ppm.c: Chelsio common library for T3/T4/T5 iSCSI PagePod Manager
*
* Copyright (c) 2016 Chelsio Communications, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Written by: Karen Xie (kxie@chelsio.com)
*/
#define DRV_NAME "libcxgb"
#define DRV_VERSION "1.0.0-ko"
#define pr_fmt(fmt) DRV_NAME ": " fmt
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/module.h>
@ -22,7 +50,7 @@
#include <linux/pci.h>
#include <linux/scatterlist.h>
#include "cxgb4_ppm.h"
#include "libcxgb_ppm.h"
/* Direct Data Placement -
* Directly place the iSCSI Data-In or Data-Out PDU's payload into
@ -462,3 +490,8 @@ unsigned int cxgbi_tagmask_set(unsigned int ppmax)
return 1 << (bits + PPOD_IDX_SHIFT);
}
MODULE_AUTHOR("Chelsio Communications");
MODULE_DESCRIPTION("Chelsio common library");
MODULE_VERSION(DRV_VERSION);
MODULE_LICENSE("Dual BSD/GPL");

38
drivers/net/ethernet/chelsio/cxgb4/cxgb4_ppm.h → drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h
View File

@ -1,17 +1,41 @@
/*
* cxgb4_ppm.h: Chelsio common library for T4/T5 iSCSI ddp operation
* libcxgb_ppm.h: Chelsio common library for T3/T4/T5 iSCSI ddp operation
*
* Copyright (c) 2016 Chelsio Communications, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Written by: Karen Xie (kxie@chelsio.com)
*/
#ifndef __CXGB4PPM_H__
#define __CXGB4PPM_H__
#ifndef __LIBCXGB_PPM_H__
#define __LIBCXGB_PPM_H__
#include <linux/kernel.h>
#include <linux/errno.h>
@ -307,4 +331,4 @@ int cxgbi_ppm_release(struct cxgbi_ppm *ppm);
void cxgbi_tagmask_check(unsigned int tagmask, struct cxgbi_tag_format *);
unsigned int cxgbi_tagmask_set(unsigned int ppmax);
#endif /*__CXGB4PPM_H__*/
#endif /*__LIBCXGB_PPM_H__*/

2
drivers/target/iscsi/cxgbit/Kconfig
View File

@ -1,7 +1,7 @@
config ISCSI_TARGET_CXGB4
tristate "Chelsio iSCSI target offload driver"
depends on ISCSI_TARGET && CHELSIO_T4 && INET
select CHELSIO_T4_UWIRE
select CHELSIO_LIB
---help---
To compile this driver as module, choose M here: the module
will be called cxgbit.

1
drivers/target/iscsi/cxgbit/Makefile
View File

@ -1,4 +1,5 @@
ccflags-y := -Idrivers/net/ethernet/chelsio/cxgb4
ccflags-y += -Idrivers/net/ethernet/chelsio/libcxgb
ccflags-y += -Idrivers/target/iscsi
obj-$(CONFIG_ISCSI_TARGET_CXGB4) += cxgbit.o

2
drivers/target/iscsi/cxgbit/cxgbit.h
View File

@ -37,7 +37,7 @@
#include "cxgb4.h"
#include "cxgb4_uld.h"
#include "l2t.h"
#include "cxgb4_ppm.h"
#include "libcxgb_ppm.h"
#include "cxgbit_lro.h"
extern struct mutex cdev_list_lock;