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Currently the fcoe_ctlr associated with an interface is allocated as a member of struct fcoe_interface. This causes problems when attempting to use the new fcoe_sysfs APIs which allow us to allocate the fcoe_interface as private data to the fcoe_ctlr_device instance. The problem is that libfcoe wants to be able use pointer math to find a fcoe_ctlr's fcoe_ctlr_device as well as finding a fcoe_ctlr_device's assocated fcoe_ctlr. To do this we need to allocate the fcoe_ctlr_device, with private data for the LLD. The private data contains the fcoe_ctlr and its private data is the fcoe_interface. This patch only allocates the fcoe_interface with the fcoe_ctlr, the fcoe_ctlr_device will be added in a later patch, which will complete the below diagram- +------------------+ | fcoe_ctlr_device | +------------------+ | fcoe_ctlr | +------------------+ | fcoe_interface | +------------------+ This prep work will allow us to go from a fcoe_ctlr_device instance to its fcoe_ctlr as well as from a fcoe_ctlr to its fcoe_ctlr_device once the fcoe_sysfs API is in use (later patches in this series). Signed-off-by: Robert Love <robert.w.love@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
/*
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* Copyright(c) 2009 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Maintained at www.Open-FCoE.org
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*/
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#ifndef _FCOE_H_
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#define _FCOE_H_
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#include <linux/skbuff.h>
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#include <linux/kthread.h>
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#define FCOE_MAX_QUEUE_DEPTH 256
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#define FCOE_MIN_QUEUE_DEPTH 32
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#define FCOE_WORD_TO_BYTE 4
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#define FCOE_VERSION "0.1"
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#define FCOE_NAME "fcoe"
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#define FCOE_VENDOR "Open-FCoE.org"
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#define FCOE_MAX_LUN 0xFFFF
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#define FCOE_MAX_FCP_TARGET 256
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#define FCOE_MAX_OUTSTANDING_COMMANDS 1024
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#define FCOE_MIN_XID 0x0000 /* the min xid supported by fcoe_sw */
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#define FCOE_MAX_XID 0x0FFF /* the max xid supported by fcoe_sw */
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extern unsigned int fcoe_debug_logging;
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#define FCOE_LOGGING 0x01 /* General logging, not categorized */
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#define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */
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#define FCOE_CHECK_LOGGING(LEVEL, CMD) \
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do { \
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if (unlikely(fcoe_debug_logging & LEVEL)) \
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do { \
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CMD; \
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} while (0); \
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} while (0)
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#define FCOE_DBG(fmt, args...) \
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FCOE_CHECK_LOGGING(FCOE_LOGGING, \
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printk(KERN_INFO "fcoe: " fmt, ##args);)
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#define FCOE_NETDEV_DBG(netdev, fmt, args...) \
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FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING, \
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printk(KERN_INFO "fcoe: %s: " fmt, \
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netdev->name, ##args);)
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/**
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* struct fcoe_interface - A FCoE interface
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* @list: Handle for a list of FCoE interfaces
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* @netdev: The associated net device
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* @fcoe_packet_type: FCoE packet type
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* @fip_packet_type: FIP packet type
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* @oem: The offload exchange manager for all local port
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* instances associated with this port
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* @removed: Indicates fcoe interface removed from net device
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* This structure is 1:1 with a net device.
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*/
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struct fcoe_interface {
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struct list_head list;
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struct net_device *netdev;
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struct net_device *realdev;
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struct packet_type fcoe_packet_type;
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struct packet_type fip_packet_type;
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struct fc_exch_mgr *oem;
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u8 removed;
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};
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#define fcoe_to_ctlr(x) \
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(struct fcoe_ctlr *)(((struct fcoe_ctlr *)(x)) - 1)
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#define fcoe_from_ctlr(x) \
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((struct fcoe_interface *)((x) + 1))
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/**
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* fcoe_netdev() - Return the net device associated with a local port
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* @lport: The local port to get the net device from
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*/
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static inline struct net_device *fcoe_netdev(const struct fc_lport *lport)
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{
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return ((struct fcoe_interface *)
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((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
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}
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#endif /* _FCOE_H_ */
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