11b5618866
The FIP code in libfcoe needed several changes to support NPIV 1) dst_src_addr needs to be managed per-n_port-ID for FPMA fabrics with NPIV enabled. Managing the MAC address is now handled in fcoe, with some slight changes to update_mac() and a new get_src_addr() function pointer. 2) The libfc elsct_send() hook is used to setup FCoE specific response handlers for FIP encapsulated ELS exchanges. This lets the FCoE specific handling know which VN_Port the exchange is for, and doesn't require tracking OX_IDs. It might be possible to roll back to the full FIP frame in these, but for now I've just stashed the contents of the MAC address descriptor in the skb context block for later use. Also, because fcoe_elsct_send() just passes control on to fc_elsct_send(), all transmits still come through the normal frame_send() path. 3) The NPIV changes added a mutex hold in the keep alive sending, the lport mutex is protecting the vport list. We can't take a mutex from a timer, so move the FIP keep alive logic to the link work struct. Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
117 lines
3.3 KiB
C
117 lines
3.3 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_LOW_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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/*
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* Max MTU for FCoE: 14 (FCoE header) + 24 (FC header) + 2112 (max FC payload)
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* + 4 (FC CRC) + 4 (FCoE trailer) = 2158 bytes
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*/
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#define FCOE_MTU 2158
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unsigned int fcoe_debug_logging;
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module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels");
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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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* this percpu struct for fcoe
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*/
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struct fcoe_percpu_s {
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struct task_struct *thread;
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struct sk_buff_head fcoe_rx_list;
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struct page *crc_eof_page;
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int crc_eof_offset;
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};
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/*
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* an FCoE interface, 1:1 with netdev
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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 packet_type fcoe_packet_type;
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struct packet_type fip_packet_type;
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struct fcoe_ctlr ctlr;
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struct fc_exch_mgr *oem; /* offload exchange manager */
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struct kref kref;
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};
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/*
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* the FCoE private structure that's allocated along with the
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* Scsi_Host and libfc fc_lport structures
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*/
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struct fcoe_port {
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struct fcoe_interface *fcoe;
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struct fc_lport *lport;
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struct sk_buff_head fcoe_pending_queue;
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u8 fcoe_pending_queue_active;
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struct timer_list timer; /* queue timer */
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struct work_struct destroy_work; /* to prevent rtnl deadlocks */
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u8 data_src_addr[ETH_ALEN];
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};
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#define fcoe_from_ctlr(fip) container_of(fip, struct fcoe_interface, ctlr)
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static inline struct net_device *fcoe_netdev(const struct fc_lport *lp)
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{
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return ((struct fcoe_port *)lport_priv(lp))->fcoe->netdev;
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}
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#endif /* _FCOE_H_ */
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