172 строки
4.7 KiB
C
172 строки
4.7 KiB
C
/*
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* Copyright(c) 2007 - 2008 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 _LIBFCOE_H
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#define _LIBFCOE_H
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <scsi/fc/fc_fcoe.h>
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#include <scsi/libfc.h>
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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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int cpu;
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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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* the fcoe sw transport private data
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*/
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struct fcoe_softc {
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struct list_head list;
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struct fc_lport *lp;
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struct net_device *real_dev;
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struct net_device *phys_dev; /* device with ethtool_ops */
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struct packet_type fcoe_packet_type;
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struct sk_buff_head fcoe_pending_queue;
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u8 fcoe_pending_queue_active;
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u8 dest_addr[ETH_ALEN];
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u8 ctl_src_addr[ETH_ALEN];
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u8 data_src_addr[ETH_ALEN];
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/*
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* fcoe protocol address learning related stuff
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*/
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u16 flogi_oxid;
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u8 flogi_progress;
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u8 address_mode;
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};
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static inline struct net_device *fcoe_netdev(
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const struct fc_lport *lp)
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{
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return ((struct fcoe_softc *)lport_priv(lp))->real_dev;
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}
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static inline struct fcoe_hdr *skb_fcoe_header(const struct sk_buff *skb)
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{
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return (struct fcoe_hdr *)skb_network_header(skb);
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}
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static inline int skb_fcoe_offset(const struct sk_buff *skb)
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{
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return skb_network_offset(skb);
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}
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static inline struct fc_frame_header *skb_fc_header(const struct sk_buff *skb)
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{
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return (struct fc_frame_header *)skb_transport_header(skb);
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}
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static inline int skb_fc_offset(const struct sk_buff *skb)
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{
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return skb_transport_offset(skb);
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}
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static inline void skb_reset_fc_header(struct sk_buff *skb)
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{
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skb_reset_network_header(skb);
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skb_set_transport_header(skb, skb_network_offset(skb) +
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sizeof(struct fcoe_hdr));
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}
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static inline bool skb_fc_is_data(const struct sk_buff *skb)
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{
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return skb_fc_header(skb)->fh_r_ctl == FC_RCTL_DD_SOL_DATA;
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}
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static inline bool skb_fc_is_cmd(const struct sk_buff *skb)
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{
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return skb_fc_header(skb)->fh_r_ctl == FC_RCTL_DD_UNSOL_CMD;
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}
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static inline bool skb_fc_has_exthdr(const struct sk_buff *skb)
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{
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return (skb_fc_header(skb)->fh_r_ctl == FC_RCTL_VFTH) ||
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(skb_fc_header(skb)->fh_r_ctl == FC_RCTL_IFRH) ||
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(skb_fc_header(skb)->fh_r_ctl == FC_RCTL_ENCH);
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}
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static inline bool skb_fc_is_roff(const struct sk_buff *skb)
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{
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return skb_fc_header(skb)->fh_f_ctl[2] & FC_FC_REL_OFF;
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}
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static inline u16 skb_fc_oxid(const struct sk_buff *skb)
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{
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return be16_to_cpu(skb_fc_header(skb)->fh_ox_id);
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}
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static inline u16 skb_fc_rxid(const struct sk_buff *skb)
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{
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return be16_to_cpu(skb_fc_header(skb)->fh_rx_id);
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}
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/* FIXME - DMA_BIDIRECTIONAL ? */
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#define skb_cb(skb) ((struct fcoe_rcv_info *)&((skb)->cb[0]))
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#define skb_cmd(skb) (skb_cb(skb)->fr_cmd)
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#define skb_dir(skb) (skb_cmd(skb)->sc_data_direction)
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static inline bool skb_fc_is_read(const struct sk_buff *skb)
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{
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if (skb_fc_is_cmd(skb) && skb_cmd(skb))
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return skb_dir(skb) == DMA_FROM_DEVICE;
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return false;
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}
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static inline bool skb_fc_is_write(const struct sk_buff *skb)
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{
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if (skb_fc_is_cmd(skb) && skb_cmd(skb))
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return skb_dir(skb) == DMA_TO_DEVICE;
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return false;
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}
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/* libfcoe funcs */
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int fcoe_reset(struct Scsi_Host *shost);
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u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN],
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unsigned int scheme, unsigned int port);
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u32 fcoe_fc_crc(struct fc_frame *fp);
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int fcoe_xmit(struct fc_lport *, struct fc_frame *);
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int fcoe_rcv(struct sk_buff *, struct net_device *,
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struct packet_type *, struct net_device *);
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int fcoe_percpu_receive_thread(void *arg);
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void fcoe_clean_pending_queue(struct fc_lport *lp);
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void fcoe_percpu_clean(struct fc_lport *lp);
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void fcoe_watchdog(ulong vp);
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int fcoe_link_ok(struct fc_lport *lp);
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struct fc_lport *fcoe_hostlist_lookup(const struct net_device *);
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int fcoe_hostlist_add(const struct fc_lport *);
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int fcoe_hostlist_remove(const struct fc_lport *);
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struct Scsi_Host *fcoe_host_alloc(struct scsi_host_template *, int);
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int fcoe_libfc_config(struct fc_lport *, struct libfc_function_template *);
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/* fcoe sw hba */
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int __init fcoe_sw_init(void);
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int __exit fcoe_sw_exit(void);
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#endif /* _LIBFCOE_H */
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