diff options
Diffstat (limited to 'include/scsi/libfcoe.h')
| -rw-r--r-- | include/scsi/libfcoe.h | 91 |
1 files changed, 52 insertions, 39 deletions
diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h index 4427393115ea..6616348e59b9 100644 --- a/include/scsi/libfcoe.h +++ b/include/scsi/libfcoe.h @@ -1,20 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * 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 */ @@ -26,7 +14,8 @@ #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/workqueue.h> -#include <linux/random.h> +#include <linux/local_lock.h> +#include <linux/prandom.h> #include <scsi/fc/fc_fcoe.h> #include <scsi/libfc.h> #include <scsi/fcoe_sysfs.h> @@ -43,7 +32,7 @@ * 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_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 */ @@ -78,10 +67,12 @@ enum fip_state { * 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 +enum fip_mode { + FIP_MODE_AUTO, + FIP_MODE_NON_FIP, + FIP_MODE_FABRIC, + FIP_MODE_VN2VN, +}; /** * struct fcoe_ctlr - FCoE Controller and FIP state @@ -90,6 +81,7 @@ enum fip_state { * @lp: &fc_lport: libfc local port. * @sel_fcf: currently selected FCF, or NULL. * @fcfs: list of discovered FCFs. + * @cdev: (Optional) pointer to sysfs fcoe_ctlr_device. * @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. @@ -107,8 +99,10 @@ enum fip_state { * @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. + * @fip_resp: start FIP VLAN discovery responder * @spma: supports SPMA server-provided MACs mode * @probe_tries: number of FC_IDs probed + * @priority: DCBx FCoE APP priority * @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 @@ -123,10 +117,11 @@ enum fip_state { */ struct fcoe_ctlr { enum fip_state state; - enum fip_state mode; + enum fip_mode mode; struct fc_lport *lp; struct fcoe_fcf *sel_fcf; struct list_head fcfs; + struct fcoe_ctlr_device *cdev; u16 fcf_count; unsigned long sol_time; unsigned long sel_time; @@ -145,7 +140,8 @@ struct fcoe_ctlr { u16 flogi_oxid; u8 flogi_req_send; u8 flogi_count; - u8 map_dest; + bool map_dest; + bool fip_resp; u8 spma; u8 probe_tries; u8 priority; @@ -161,21 +157,25 @@ struct fcoe_ctlr { /** * fcoe_ctlr_priv() - Return the private data from a fcoe_ctlr - * @cltr: The fcoe_ctlr whose private data will be returned + * @ctlr: The fcoe_ctlr whose private data will be returned + * + * Returns: pointer to the private data */ static inline void *fcoe_ctlr_priv(const struct fcoe_ctlr *ctlr) { return (void *)(ctlr + 1); } +/* + * This assumes that the fcoe_ctlr (x) is allocated with the fcoe_ctlr_device. + */ #define fcoe_ctlr_to_ctlr_dev(x) \ - (struct fcoe_ctlr_device *)(((struct fcoe_ctlr_device *)(x)) - 1) + (x)->cdev /** * struct fcoe_fcf - Fibre-Channel Forwarder * @list: list linkage * @event_work: Work for FC Transport actions queue - * @event: The event to be processed * @fip: The controller that the FCF was discovered on * @fcf_dev: The associated fcoe_fcf_device instance * @time: system time (jiffies) when an advertisement was last received @@ -189,6 +189,7 @@ static inline void *fcoe_ctlr_priv(const struct fcoe_ctlr *ctlr) * @flogi_sent: current FLOGI sent to this FCF * @flags: flags received from advertisement * @fka_period: keep-alive period, in jiffies + * @fd_flags: no need for FKA from ENode * * A Fibre-Channel Forwarder (FCF) is the entity on the Ethernet that * passes FCoE frames on to an FC fabric. This structure represents @@ -223,6 +224,7 @@ struct fcoe_fcf { /** * struct fcoe_rport - VN2VN remote port + * @rdata: libfc remote port private data * @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 @@ -231,6 +233,7 @@ struct fcoe_fcf { * @vn_mac: VN_Node assigned MAC address for data */ struct fcoe_rport { + struct fc_rport_priv rdata; unsigned long time; u16 fcoe_len; u16 flags; @@ -240,7 +243,7 @@ struct fcoe_rport { }; /* FIP API functions */ -void fcoe_ctlr_init(struct fcoe_ctlr *, enum fip_state); +void fcoe_ctlr_init(struct fcoe_ctlr *, enum fip_mode); void fcoe_ctlr_destroy(struct fcoe_ctlr *); void fcoe_ctlr_link_up(struct fcoe_ctlr *); int fcoe_ctlr_link_down(struct fcoe_ctlr *); @@ -250,7 +253,8 @@ 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); +u64 fcoe_wwn_from_mac(unsigned char mac[ETH_ALEN], unsigned int scheme, + unsigned int port); 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); @@ -265,8 +269,10 @@ void fcoe_get_lesb(struct fc_lport *, struct fc_els_lesb *); void fcoe_ctlr_get_lesb(struct fcoe_ctlr_device *ctlr_dev); /** - * is_fip_mode() - returns true if FIP mode selected. + * is_fip_mode() - test if FIP mode selected. * @fip: FCoE controller. + * + * Returns: %true if FIP mode is selected */ static inline bool is_fip_mode(struct fcoe_ctlr *fip) { @@ -306,7 +312,7 @@ struct fcoe_transport { struct list_head list; bool (*match) (struct net_device *device); int (*alloc) (struct net_device *device); - int (*create) (struct net_device *device, enum fip_state fip_mode); + int (*create) (struct net_device *device, enum fip_mode fip_mode); int (*destroy) (struct net_device *device); int (*enable) (struct net_device *device); int (*disable) (struct net_device *device); @@ -314,17 +320,21 @@ struct fcoe_transport { /** * struct fcoe_percpu_s - The context for FCoE receive thread(s) - * @thread: The thread context + * @kthread: The thread context (used by bnx2fc) + * @work: The work item (used by fcoe) * @fcoe_rx_list: The queue of pending packets to process - * @page: The memory page for calculating frame trailer CRCs + * @crc_eof_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 + * @lock: local lock for members of this struct */ struct fcoe_percpu_s { - struct task_struct *thread; + struct task_struct *kthread; + struct work_struct work; struct sk_buff_head fcoe_rx_list; struct page *crc_eof_page; int crc_eof_offset; + local_lock_t lock; }; /** @@ -339,7 +349,8 @@ struct fcoe_percpu_s { * @timer: The queue timer * @destroy_work: Handle for work context * (to prevent RTNL deadlocks) - * @data_srt_addr: Source address for data + * @data_src_addr: Source address for data + * @get_netdev: function that returns a &net_device from @lport * * An instance of this structure is to be allocated along with the * Scsi_Host and libfc fc_lport structures. @@ -360,6 +371,8 @@ struct fcoe_port { /** * fcoe_get_netdev() - Return the net device associated with a local port * @lport: The local port to get the net device from + * + * Returns: the &net_device associated with this @lport */ static inline struct net_device *fcoe_get_netdev(const struct fc_lport *lport) { @@ -370,7 +383,7 @@ static inline struct net_device *fcoe_get_netdev(const struct fc_lport *lport) 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); +void fcoe_queue_timer(struct timer_list *t); int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen, struct fcoe_percpu_s *fps); @@ -379,8 +392,10 @@ void fcoe_fcf_get_selected(struct fcoe_fcf_device *); void fcoe_ctlr_set_fip_mode(struct fcoe_ctlr_device *); /** - * struct netdev_list - * A mapping from netdevice to fcoe_transport + * struct fcoe_netdev_mapping - A mapping from &net_device to &fcoe_transport + * @list: list linkage of the mappings + * @netdev: the &net_device + * @ft: the fcoe_transport associated with @netdev */ struct fcoe_netdev_mapping { struct list_head list; @@ -393,10 +408,8 @@ int fcoe_transport_attach(struct fcoe_transport *ft); int fcoe_transport_detach(struct fcoe_transport *ft); /* sysfs store handler for ctrl_control interface */ -ssize_t fcoe_ctlr_create_store(struct bus_type *bus, - const char *buf, size_t count); -ssize_t fcoe_ctlr_destroy_store(struct bus_type *bus, - const char *buf, size_t count); +ssize_t fcoe_ctlr_create_store(const char *buf, size_t count); +ssize_t fcoe_ctlr_destroy_store(const char *buf, size_t count); #endif /* _LIBFCOE_H */ |