diff options
Diffstat (limited to 'ANDROID_3.4.5/include/scsi/libfcoe.h')
| -rw-r--r-- | ANDROID_3.4.5/include/scsi/libfcoe.h | 350 |
1 files changed, 0 insertions, 350 deletions
diff --git a/ANDROID_3.4.5/include/scsi/libfcoe.h b/ANDROID_3.4.5/include/scsi/libfcoe.h deleted file mode 100644 index cfdb55f0..00000000 --- a/ANDROID_3.4.5/include/scsi/libfcoe.h +++ /dev/null @@ -1,350 +0,0 @@ -/* - * Copyright (c) 2008-2009 Cisco Systems, Inc. All rights reserved. - * Copyright (c) 2007-2008 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * - * Maintained at www.Open-FCoE.org - */ - -#ifndef _LIBFCOE_H -#define _LIBFCOE_H - -#include <linux/etherdevice.h> -#include <linux/if_ether.h> -#include <linux/netdevice.h> -#include <linux/skbuff.h> -#include <linux/workqueue.h> -#include <linux/random.h> -#include <scsi/fc/fc_fcoe.h> -#include <scsi/libfc.h> - -#define FCOE_MAX_CMD_LEN 16 /* Supported CDB length */ - -/* - * Max MTU for FCoE: 14 (FCoE header) + 24 (FC header) + 2112 (max FC payload) - * + 4 (FC CRC) + 4 (FCoE trailer) = 2158 bytes - */ -#define FCOE_MTU 2158 - -/* - * FIP tunable parameters. - */ -#define FCOE_CTLR_START_DELAY 2000 /* mS after first adv. to choose FCF */ -#define FCOE_CTRL_SOL_TOV 2000 /* min. solicitation interval (mS) */ -#define FCOE_CTLR_FCF_LIMIT 20 /* max. number of FCF entries */ -#define FCOE_CTLR_VN2VN_LOGIN_LIMIT 3 /* max. VN2VN rport login retries */ - -/** - * enum fip_state - internal state of FCoE controller. - * @FIP_ST_DISABLED: controller has been disabled or not yet enabled. - * @FIP_ST_LINK_WAIT: the physical link is down or unusable. - * @FIP_ST_AUTO: determining whether to use FIP or non-FIP mode. - * @FIP_ST_NON_FIP: non-FIP mode selected. - * @FIP_ST_ENABLED: FIP mode selected. - * @FIP_ST_VNMP_START: VN2VN multipath mode start, wait - * @FIP_ST_VNMP_PROBE1: VN2VN sent first probe, listening - * @FIP_ST_VNMP_PROBE2: VN2VN sent second probe, listening - * @FIP_ST_VNMP_CLAIM: VN2VN sent claim, waiting for responses - * @FIP_ST_VNMP_UP: VN2VN multipath mode operation - */ -enum fip_state { - FIP_ST_DISABLED, - FIP_ST_LINK_WAIT, - FIP_ST_AUTO, - FIP_ST_NON_FIP, - FIP_ST_ENABLED, - FIP_ST_VNMP_START, - FIP_ST_VNMP_PROBE1, - FIP_ST_VNMP_PROBE2, - FIP_ST_VNMP_CLAIM, - FIP_ST_VNMP_UP, -}; - -/* - * Modes: - * The mode is the state that is to be entered after link up. - * It must not change after fcoe_ctlr_init() sets it. - */ -#define FIP_MODE_AUTO FIP_ST_AUTO -#define FIP_MODE_NON_FIP FIP_ST_NON_FIP -#define FIP_MODE_FABRIC FIP_ST_ENABLED -#define FIP_MODE_VN2VN FIP_ST_VNMP_START - -/** - * struct fcoe_ctlr - FCoE Controller and FIP state - * @state: internal FIP state for network link and FIP or non-FIP mode. - * @mode: LLD-selected mode. - * @lp: &fc_lport: libfc local port. - * @sel_fcf: currently selected FCF, or NULL. - * @fcfs: list of discovered FCFs. - * @fcf_count: number of discovered FCF entries. - * @sol_time: time when a multicast solicitation was last sent. - * @sel_time: time after which to select an FCF. - * @port_ka_time: time of next port keep-alive. - * @ctlr_ka_time: time of next controller keep-alive. - * @timer: timer struct used for all delayed events. - * @timer_work: &work_struct for doing keep-alives and resets. - * @recv_work: &work_struct for receiving FIP frames. - * @fip_recv_list: list of received FIP frames. - * @flogi_req: clone of FLOGI request sent - * @rnd_state: state for pseudo-random number generator. - * @port_id: proposed or selected local-port ID. - * @user_mfs: configured maximum FC frame size, including FC header. - * @flogi_oxid: exchange ID of most recent fabric login. - * @flogi_req_send: send of FLOGI requested - * @flogi_count: number of FLOGI attempts in AUTO mode. - * @map_dest: use the FC_MAP mode for destination MAC addresses. - * @spma: supports SPMA server-provided MACs mode - * @probe_tries: number of FC_IDs probed - * @dest_addr: MAC address of the selected FC forwarder. - * @ctl_src_addr: the native MAC address of our local port. - * @send: LLD-supplied function to handle sending FIP Ethernet frames - * @update_mac: LLD-supplied function to handle changes to MAC addresses. - * @get_src_addr: LLD-supplied function to supply a source MAC address. - * @ctlr_mutex: lock protecting this structure. - * @ctlr_lock: spinlock covering flogi_req - * - * This structure is used by all FCoE drivers. It contains information - * needed by all FCoE low-level drivers (LLDs) as well as internal state - * for FIP, and fields shared with the LLDS. - */ -struct fcoe_ctlr { - enum fip_state state; - enum fip_state mode; - struct fc_lport *lp; - struct fcoe_fcf *sel_fcf; - struct list_head fcfs; - u16 fcf_count; - unsigned long sol_time; - unsigned long sel_time; - unsigned long port_ka_time; - unsigned long ctlr_ka_time; - struct timer_list timer; - struct work_struct timer_work; - struct work_struct recv_work; - struct sk_buff_head fip_recv_list; - struct sk_buff *flogi_req; - - struct rnd_state rnd_state; - u32 port_id; - - u16 user_mfs; - u16 flogi_oxid; - u8 flogi_req_send; - u8 flogi_count; - u8 map_dest; - u8 spma; - u8 probe_tries; - u8 priority; - u8 dest_addr[ETH_ALEN]; - u8 ctl_src_addr[ETH_ALEN]; - - void (*send)(struct fcoe_ctlr *, struct sk_buff *); - void (*update_mac)(struct fc_lport *, u8 *addr); - u8 * (*get_src_addr)(struct fc_lport *); - struct mutex ctlr_mutex; - spinlock_t ctlr_lock; -}; - -/** - * struct fcoe_fcf - Fibre-Channel Forwarder - * @list: list linkage - * @time: system time (jiffies) when an advertisement was last received - * @switch_name: WWN of switch from advertisement - * @fabric_name: WWN of fabric from advertisement - * @fc_map: FC_MAP value from advertisement - * @fcf_mac: Ethernet address of the FCF for FIP traffic - * @fcoe_mac: Ethernet address of the FCF for FCoE traffic - * @vfid: virtual fabric ID - * @pri: selection priority, smaller values are better - * @flogi_sent: current FLOGI sent to this FCF - * @flags: flags received from advertisement - * @fka_period: keep-alive period, in jiffies - * - * A Fibre-Channel Forwarder (FCF) is the entity on the Ethernet that - * passes FCoE frames on to an FC fabric. This structure represents - * one FCF from which advertisements have been received. - * - * When looking up an FCF, @switch_name, @fabric_name, @fc_map, @vfid, and - * @fcf_mac together form the lookup key. - */ -struct fcoe_fcf { - struct list_head list; - unsigned long time; - - u64 switch_name; - u64 fabric_name; - u32 fc_map; - u16 vfid; - u8 fcf_mac[ETH_ALEN]; - u8 fcoe_mac[ETH_ALEN]; - - u8 pri; - u8 flogi_sent; - u16 flags; - u32 fka_period; - u8 fd_flags:1; -}; - -/** - * struct fcoe_rport - VN2VN remote port - * @time: time of create or last beacon packet received from node - * @fcoe_len: max FCoE frame size, not including VLAN or Ethernet headers - * @flags: flags from probe or claim - * @login_count: number of unsuccessful rport logins to this port - * @enode_mac: E_Node control MAC address - * @vn_mac: VN_Node assigned MAC address for data - */ -struct fcoe_rport { - unsigned long time; - u16 fcoe_len; - u16 flags; - u8 login_count; - u8 enode_mac[ETH_ALEN]; - u8 vn_mac[ETH_ALEN]; -}; - -/* FIP API functions */ -void fcoe_ctlr_init(struct fcoe_ctlr *, enum fip_state); -void fcoe_ctlr_destroy(struct fcoe_ctlr *); -void fcoe_ctlr_link_up(struct fcoe_ctlr *); -int fcoe_ctlr_link_down(struct fcoe_ctlr *); -int fcoe_ctlr_els_send(struct fcoe_ctlr *, struct fc_lport *, struct sk_buff *); -void fcoe_ctlr_recv(struct fcoe_ctlr *, struct sk_buff *); -int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *, struct fc_lport *, - struct fc_frame *); - -/* libfcoe funcs */ -u64 fcoe_wwn_from_mac(unsigned char mac[], unsigned int, unsigned int); -int fcoe_libfc_config(struct fc_lport *, struct fcoe_ctlr *, - const struct libfc_function_template *, int init_fcp); -u32 fcoe_fc_crc(struct fc_frame *fp); -int fcoe_start_io(struct sk_buff *skb); -int fcoe_get_wwn(struct net_device *netdev, u64 *wwn, int type); -void __fcoe_get_lesb(struct fc_lport *lport, struct fc_els_lesb *fc_lesb, - struct net_device *netdev); -void fcoe_wwn_to_str(u64 wwn, char *buf, int len); -int fcoe_validate_vport_create(struct fc_vport *vport); - -/** - * is_fip_mode() - returns true if FIP mode selected. - * @fip: FCoE controller. - */ -static inline bool is_fip_mode(struct fcoe_ctlr *fip) -{ - return fip->state == FIP_ST_ENABLED; -} - -/* helper for FCoE SW HBA drivers, can include subven and subdev if needed. The - * modpost would use pci_device_id table to auto-generate formatted module alias - * into the corresponding .mod.c file, but there may or may not be a pci device - * id table for FCoE drivers so we use the following helper for build the fcoe - * driver module alias. - */ -#define MODULE_ALIAS_FCOE_PCI(ven, dev) \ - MODULE_ALIAS("fcoe-pci:" \ - "v" __stringify(ven) \ - "d" __stringify(dev) "sv*sd*bc*sc*i*") - -/* the name of the default FCoE transport driver fcoe.ko */ -#define FCOE_TRANSPORT_DEFAULT "fcoe" - -/* struct fcoe_transport - The FCoE transport interface - * @name: a vendor specific name for their FCoE transport driver - * @attached: whether this transport is already attached - * @list: list linkage to all attached transports - * @match: handler to allow the transport driver to match up a given netdev - * @create: handler to sysfs entry of create for FCoE instances - * @destroy: handler to sysfs entry of destroy for FCoE instances - * @enable: handler to sysfs entry of enable for FCoE instances - * @disable: handler to sysfs entry of disable for FCoE instances - */ -struct fcoe_transport { - char name[IFNAMSIZ]; - bool attached; - struct list_head list; - bool (*match) (struct net_device *device); - int (*create) (struct net_device *device, enum fip_state fip_mode); - int (*destroy) (struct net_device *device); - int (*enable) (struct net_device *device); - int (*disable) (struct net_device *device); -}; - -/** - * struct fcoe_percpu_s - The context for FCoE receive thread(s) - * @thread: The thread context - * @fcoe_rx_list: The queue of pending packets to process - * @page: The memory page for calculating frame trailer CRCs - * @crc_eof_offset: The offset into the CRC page pointing to available - * memory for a new trailer - */ -struct fcoe_percpu_s { - struct task_struct *thread; - struct sk_buff_head fcoe_rx_list; - struct page *crc_eof_page; - int crc_eof_offset; -}; - -/** - * struct fcoe_port - The FCoE private structure - * @priv: The associated fcoe interface. The structure is - * defined by the low level driver - * @lport: The associated local port - * @fcoe_pending_queue: The pending Rx queue of skbs - * @fcoe_pending_queue_active: Indicates if the pending queue is active - * @priority: Packet priority (DCB) - * @max_queue_depth: Max queue depth of pending queue - * @min_queue_depth: Min queue depth of pending queue - * @timer: The queue timer - * @destroy_work: Handle for work context - * (to prevent RTNL deadlocks) - * @data_srt_addr: Source address for data - * - * An instance of this structure is to be allocated along with the - * Scsi_Host and libfc fc_lport structures. - */ -struct fcoe_port { - void *priv; - struct fc_lport *lport; - struct sk_buff_head fcoe_pending_queue; - u8 fcoe_pending_queue_active; - u8 priority; - u32 max_queue_depth; - u32 min_queue_depth; - struct timer_list timer; - struct work_struct destroy_work; - u8 data_src_addr[ETH_ALEN]; -}; -void fcoe_clean_pending_queue(struct fc_lport *); -void fcoe_check_wait_queue(struct fc_lport *lport, struct sk_buff *skb); -void fcoe_queue_timer(ulong lport); -int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen, - struct fcoe_percpu_s *fps); - -/** - * struct netdev_list - * A mapping from netdevice to fcoe_transport - */ -struct fcoe_netdev_mapping { - struct list_head list; - struct net_device *netdev; - struct fcoe_transport *ft; -}; - -/* fcoe transports registration and deregistration */ -int fcoe_transport_attach(struct fcoe_transport *ft); -int fcoe_transport_detach(struct fcoe_transport *ft); - -#endif /* _LIBFCOE_H */ |