Robert Love | 85b4aa4 | 2008-12-09 15:10:24 -0800 | [diff] [blame] | 1 | /* |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 2 | * Copyright (c) 2008-2009 Cisco Systems, Inc. All rights reserved. |
| 3 | * Copyright (c) 2007-2008 Intel Corporation. All rights reserved. |
Robert Love | 85b4aa4 | 2008-12-09 15:10:24 -0800 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 17 | * |
| 18 | * Maintained at www.Open-FCoE.org |
| 19 | */ |
| 20 | |
| 21 | #ifndef _LIBFCOE_H |
| 22 | #define _LIBFCOE_H |
| 23 | |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 24 | #include <linux/etherdevice.h> |
| 25 | #include <linux/if_ether.h> |
Robert Love | 85b4aa4 | 2008-12-09 15:10:24 -0800 | [diff] [blame] | 26 | #include <linux/netdevice.h> |
| 27 | #include <linux/skbuff.h> |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 28 | #include <linux/workqueue.h> |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 29 | #include <linux/random.h> |
Robert Love | 85b4aa4 | 2008-12-09 15:10:24 -0800 | [diff] [blame] | 30 | #include <scsi/fc/fc_fcoe.h> |
| 31 | #include <scsi/libfc.h> |
| 32 | |
Vasu Dev | da87bfa | 2010-04-09 14:22:59 -0700 | [diff] [blame] | 33 | #define FCOE_MAX_CMD_LEN 16 /* Supported CDB length */ |
| 34 | |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 35 | /* |
Bhanu Prakash Gollapudi | f4d2b2b | 2011-02-25 15:03:12 -0800 | [diff] [blame] | 36 | * Max MTU for FCoE: 14 (FCoE header) + 24 (FC header) + 2112 (max FC payload) |
| 37 | * + 4 (FC CRC) + 4 (FCoE trailer) = 2158 bytes |
| 38 | */ |
| 39 | #define FCOE_MTU 2158 |
| 40 | |
| 41 | /* |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 42 | * FIP tunable parameters. |
| 43 | */ |
| 44 | #define FCOE_CTLR_START_DELAY 2000 /* mS after first adv. to choose FCF */ |
| 45 | #define FCOE_CTRL_SOL_TOV 2000 /* min. solicitation interval (mS) */ |
| 46 | #define FCOE_CTLR_FCF_LIMIT 20 /* max. number of FCF entries */ |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 47 | #define FCOE_CTLR_VN2VN_LOGIN_LIMIT 3 /* max. VN2VN rport login retries */ |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 48 | |
| 49 | /** |
| 50 | * enum fip_state - internal state of FCoE controller. |
| 51 | * @FIP_ST_DISABLED: controller has been disabled or not yet enabled. |
| 52 | * @FIP_ST_LINK_WAIT: the physical link is down or unusable. |
| 53 | * @FIP_ST_AUTO: determining whether to use FIP or non-FIP mode. |
| 54 | * @FIP_ST_NON_FIP: non-FIP mode selected. |
| 55 | * @FIP_ST_ENABLED: FIP mode selected. |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 56 | * @FIP_ST_VNMP_START: VN2VN multipath mode start, wait |
| 57 | * @FIP_ST_VNMP_PROBE1: VN2VN sent first probe, listening |
| 58 | * @FIP_ST_VNMP_PROBE2: VN2VN sent second probe, listening |
| 59 | * @FIP_ST_VNMP_CLAIM: VN2VN sent claim, waiting for responses |
| 60 | * @FIP_ST_VNMP_UP: VN2VN multipath mode operation |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 61 | */ |
| 62 | enum fip_state { |
| 63 | FIP_ST_DISABLED, |
| 64 | FIP_ST_LINK_WAIT, |
| 65 | FIP_ST_AUTO, |
| 66 | FIP_ST_NON_FIP, |
| 67 | FIP_ST_ENABLED, |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 68 | FIP_ST_VNMP_START, |
| 69 | FIP_ST_VNMP_PROBE1, |
| 70 | FIP_ST_VNMP_PROBE2, |
| 71 | FIP_ST_VNMP_CLAIM, |
| 72 | FIP_ST_VNMP_UP, |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 73 | }; |
| 74 | |
Joe Eykholt | 3d902ac | 2010-07-20 15:19:58 -0700 | [diff] [blame] | 75 | /* |
| 76 | * Modes: |
| 77 | * The mode is the state that is to be entered after link up. |
| 78 | * It must not change after fcoe_ctlr_init() sets it. |
| 79 | */ |
| 80 | #define FIP_MODE_AUTO FIP_ST_AUTO |
| 81 | #define FIP_MODE_NON_FIP FIP_ST_NON_FIP |
| 82 | #define FIP_MODE_FABRIC FIP_ST_ENABLED |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 83 | #define FIP_MODE_VN2VN FIP_ST_VNMP_START |
Joe Eykholt | 3d902ac | 2010-07-20 15:19:58 -0700 | [diff] [blame] | 84 | |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 85 | /** |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 86 | * struct fcoe_ctlr - FCoE Controller and FIP state |
| 87 | * @state: internal FIP state for network link and FIP or non-FIP mode. |
Joe Eykholt | 22bcd22 | 2009-11-03 11:48:11 -0800 | [diff] [blame] | 88 | * @mode: LLD-selected mode. |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 89 | * @lp: &fc_lport: libfc local port. |
| 90 | * @sel_fcf: currently selected FCF, or NULL. |
| 91 | * @fcfs: list of discovered FCFs. |
| 92 | * @fcf_count: number of discovered FCF entries. |
| 93 | * @sol_time: time when a multicast solicitation was last sent. |
| 94 | * @sel_time: time after which to select an FCF. |
| 95 | * @port_ka_time: time of next port keep-alive. |
| 96 | * @ctlr_ka_time: time of next controller keep-alive. |
| 97 | * @timer: timer struct used for all delayed events. |
Joe Eykholt | 4291365 | 2010-03-12 16:08:23 -0800 | [diff] [blame] | 98 | * @timer_work: &work_struct for doing keep-alives and resets. |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 99 | * @recv_work: &work_struct for receiving FIP frames. |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 100 | * @fip_recv_list: list of received FIP frames. |
Joe Eykholt | 794d98e | 2010-11-30 16:19:56 -0800 | [diff] [blame] | 101 | * @flogi_req: clone of FLOGI request sent |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 102 | * @rnd_state: state for pseudo-random number generator. |
| 103 | * @port_id: proposed or selected local-port ID. |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 104 | * @user_mfs: configured maximum FC frame size, including FC header. |
| 105 | * @flogi_oxid: exchange ID of most recent fabric login. |
Joe Eykholt | 794d98e | 2010-11-30 16:19:56 -0800 | [diff] [blame] | 106 | * @flogi_req_send: send of FLOGI requested |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 107 | * @flogi_count: number of FLOGI attempts in AUTO mode. |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 108 | * @map_dest: use the FC_MAP mode for destination MAC addresses. |
| 109 | * @spma: supports SPMA server-provided MACs mode |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 110 | * @probe_tries: number of FC_IDs probed |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 111 | * @dest_addr: MAC address of the selected FC forwarder. |
| 112 | * @ctl_src_addr: the native MAC address of our local port. |
| 113 | * @send: LLD-supplied function to handle sending FIP Ethernet frames |
| 114 | * @update_mac: LLD-supplied function to handle changes to MAC addresses. |
| 115 | * @get_src_addr: LLD-supplied function to supply a source MAC address. |
Joe Eykholt | fdb068c | 2010-07-20 15:19:47 -0700 | [diff] [blame] | 116 | * @ctlr_mutex: lock protecting this structure. |
Joe Eykholt | 794d98e | 2010-11-30 16:19:56 -0800 | [diff] [blame] | 117 | * @ctlr_lock: spinlock covering flogi_req |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 118 | * |
| 119 | * This structure is used by all FCoE drivers. It contains information |
| 120 | * needed by all FCoE low-level drivers (LLDs) as well as internal state |
| 121 | * for FIP, and fields shared with the LLDS. |
| 122 | */ |
| 123 | struct fcoe_ctlr { |
| 124 | enum fip_state state; |
Joe Eykholt | 22bcd22 | 2009-11-03 11:48:11 -0800 | [diff] [blame] | 125 | enum fip_state mode; |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 126 | struct fc_lport *lp; |
| 127 | struct fcoe_fcf *sel_fcf; |
| 128 | struct list_head fcfs; |
| 129 | u16 fcf_count; |
| 130 | unsigned long sol_time; |
| 131 | unsigned long sel_time; |
| 132 | unsigned long port_ka_time; |
| 133 | unsigned long ctlr_ka_time; |
| 134 | struct timer_list timer; |
Joe Eykholt | 4291365 | 2010-03-12 16:08:23 -0800 | [diff] [blame] | 135 | struct work_struct timer_work; |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 136 | struct work_struct recv_work; |
| 137 | struct sk_buff_head fip_recv_list; |
Joe Eykholt | 794d98e | 2010-11-30 16:19:56 -0800 | [diff] [blame] | 138 | struct sk_buff *flogi_req; |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 139 | |
| 140 | struct rnd_state rnd_state; |
| 141 | u32 port_id; |
| 142 | |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 143 | u16 user_mfs; |
| 144 | u16 flogi_oxid; |
Joe Eykholt | 794d98e | 2010-11-30 16:19:56 -0800 | [diff] [blame] | 145 | u8 flogi_req_send; |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 146 | u8 flogi_count; |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 147 | u8 map_dest; |
Vasu Dev | 184dd34 | 2009-05-17 12:33:28 +0000 | [diff] [blame] | 148 | u8 spma; |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 149 | u8 probe_tries; |
john fastabend | 6f6c2aa | 2011-11-18 13:35:56 -0800 | [diff] [blame] | 150 | u8 priority; |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 151 | u8 dest_addr[ETH_ALEN]; |
| 152 | u8 ctl_src_addr[ETH_ALEN]; |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 153 | |
| 154 | void (*send)(struct fcoe_ctlr *, struct sk_buff *); |
Chris Leech | 11b5618 | 2009-11-03 11:46:29 -0800 | [diff] [blame] | 155 | void (*update_mac)(struct fc_lport *, u8 *addr); |
| 156 | u8 * (*get_src_addr)(struct fc_lport *); |
Joe Eykholt | fdb068c | 2010-07-20 15:19:47 -0700 | [diff] [blame] | 157 | struct mutex ctlr_mutex; |
Joe Eykholt | 794d98e | 2010-11-30 16:19:56 -0800 | [diff] [blame] | 158 | spinlock_t ctlr_lock; |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 159 | }; |
| 160 | |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 161 | /** |
| 162 | * struct fcoe_fcf - Fibre-Channel Forwarder |
| 163 | * @list: list linkage |
| 164 | * @time: system time (jiffies) when an advertisement was last received |
| 165 | * @switch_name: WWN of switch from advertisement |
| 166 | * @fabric_name: WWN of fabric from advertisement |
| 167 | * @fc_map: FC_MAP value from advertisement |
| 168 | * @fcf_mac: Ethernet address of the FCF |
| 169 | * @vfid: virtual fabric ID |
| 170 | * @pri: selection priority, smaller values are better |
Joe Eykholt | 794d98e | 2010-11-30 16:19:56 -0800 | [diff] [blame] | 171 | * @flogi_sent: current FLOGI sent to this FCF |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 172 | * @flags: flags received from advertisement |
| 173 | * @fka_period: keep-alive period, in jiffies |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 174 | * |
| 175 | * A Fibre-Channel Forwarder (FCF) is the entity on the Ethernet that |
| 176 | * passes FCoE frames on to an FC fabric. This structure represents |
| 177 | * one FCF from which advertisements have been received. |
| 178 | * |
| 179 | * When looking up an FCF, @switch_name, @fabric_name, @fc_map, @vfid, and |
| 180 | * @fcf_mac together form the lookup key. |
| 181 | */ |
| 182 | struct fcoe_fcf { |
| 183 | struct list_head list; |
| 184 | unsigned long time; |
| 185 | |
| 186 | u64 switch_name; |
| 187 | u64 fabric_name; |
| 188 | u32 fc_map; |
| 189 | u16 vfid; |
| 190 | u8 fcf_mac[ETH_ALEN]; |
| 191 | |
| 192 | u8 pri; |
Joe Eykholt | 794d98e | 2010-11-30 16:19:56 -0800 | [diff] [blame] | 193 | u8 flogi_sent; |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 194 | u16 flags; |
| 195 | u32 fka_period; |
Yi Zou | 8cdffdc | 2009-11-20 14:54:57 -0800 | [diff] [blame] | 196 | u8 fd_flags:1; |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 197 | }; |
| 198 | |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 199 | /** |
| 200 | * struct fcoe_rport - VN2VN remote port |
| 201 | * @time: time of create or last beacon packet received from node |
| 202 | * @fcoe_len: max FCoE frame size, not including VLAN or Ethernet headers |
| 203 | * @flags: flags from probe or claim |
| 204 | * @login_count: number of unsuccessful rport logins to this port |
| 205 | * @enode_mac: E_Node control MAC address |
| 206 | * @vn_mac: VN_Node assigned MAC address for data |
| 207 | */ |
| 208 | struct fcoe_rport { |
| 209 | unsigned long time; |
| 210 | u16 fcoe_len; |
| 211 | u16 flags; |
| 212 | u8 login_count; |
| 213 | u8 enode_mac[ETH_ALEN]; |
| 214 | u8 vn_mac[ETH_ALEN]; |
| 215 | }; |
| 216 | |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 217 | /* FIP API functions */ |
Joe Eykholt | 3d902ac | 2010-07-20 15:19:58 -0700 | [diff] [blame] | 218 | void fcoe_ctlr_init(struct fcoe_ctlr *, enum fip_state); |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 219 | void fcoe_ctlr_destroy(struct fcoe_ctlr *); |
| 220 | void fcoe_ctlr_link_up(struct fcoe_ctlr *); |
| 221 | int fcoe_ctlr_link_down(struct fcoe_ctlr *); |
Chris Leech | 11b5618 | 2009-11-03 11:46:29 -0800 | [diff] [blame] | 222 | int fcoe_ctlr_els_send(struct fcoe_ctlr *, struct fc_lport *, struct sk_buff *); |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 223 | void fcoe_ctlr_recv(struct fcoe_ctlr *, struct sk_buff *); |
Robert Love | 70b51aa | 2009-11-03 11:47:45 -0800 | [diff] [blame] | 224 | int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *, struct fc_lport *, |
Joe Eykholt | 386309ce | 2009-11-03 11:49:16 -0800 | [diff] [blame] | 225 | struct fc_frame *); |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 226 | |
Robert Love | 85b4aa4 | 2008-12-09 15:10:24 -0800 | [diff] [blame] | 227 | /* libfcoe funcs */ |
Vasu Dev | fdd78027 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 228 | u64 fcoe_wwn_from_mac(unsigned char mac[], unsigned int, unsigned int); |
Joe Eykholt | e10f8c6 | 2010-07-20 15:20:30 -0700 | [diff] [blame] | 229 | int fcoe_libfc_config(struct fc_lport *, struct fcoe_ctlr *, |
| 230 | const struct libfc_function_template *, int init_fcp); |
Bhanu Prakash Gollapudi | 8597ae8 | 2011-01-28 16:05:37 -0800 | [diff] [blame] | 231 | u32 fcoe_fc_crc(struct fc_frame *fp); |
| 232 | int fcoe_start_io(struct sk_buff *skb); |
Bhanu Prakash Gollapudi | d834895 | 2011-08-04 17:38:49 -0700 | [diff] [blame] | 233 | int fcoe_get_wwn(struct net_device *netdev, u64 *wwn, int type); |
Bhanu Prakash Gollapudi | 814740d | 2011-10-03 16:45:01 -0700 | [diff] [blame] | 234 | void __fcoe_get_lesb(struct fc_lport *lport, struct fc_els_lesb *fc_lesb, |
| 235 | struct net_device *netdev); |
Bhanu Prakash Gollapudi | d834895 | 2011-08-04 17:38:49 -0700 | [diff] [blame] | 236 | void fcoe_wwn_to_str(u64 wwn, char *buf, int len); |
| 237 | int fcoe_validate_vport_create(struct fc_vport *vport); |
Vasu Dev | fdd78027 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 238 | |
Vasu Dev | 519e513 | 2010-07-20 15:19:32 -0700 | [diff] [blame] | 239 | /** |
| 240 | * is_fip_mode() - returns true if FIP mode selected. |
| 241 | * @fip: FCoE controller. |
| 242 | */ |
| 243 | static inline bool is_fip_mode(struct fcoe_ctlr *fip) |
| 244 | { |
| 245 | return fip->state == FIP_ST_ENABLED; |
| 246 | } |
| 247 | |
Yi Zou | 0ade7d2 | 2011-01-28 16:04:50 -0800 | [diff] [blame] | 248 | /* helper for FCoE SW HBA drivers, can include subven and subdev if needed. The |
| 249 | * modpost would use pci_device_id table to auto-generate formatted module alias |
| 250 | * into the corresponding .mod.c file, but there may or may not be a pci device |
| 251 | * id table for FCoE drivers so we use the following helper for build the fcoe |
| 252 | * driver module alias. |
| 253 | */ |
| 254 | #define MODULE_ALIAS_FCOE_PCI(ven, dev) \ |
| 255 | MODULE_ALIAS("fcoe-pci:" \ |
| 256 | "v" __stringify(ven) \ |
| 257 | "d" __stringify(dev) "sv*sd*bc*sc*i*") |
| 258 | |
| 259 | /* the name of the default FCoE transport driver fcoe.ko */ |
| 260 | #define FCOE_TRANSPORT_DEFAULT "fcoe" |
| 261 | |
| 262 | /* struct fcoe_transport - The FCoE transport interface |
| 263 | * @name: a vendor specific name for their FCoE transport driver |
| 264 | * @attached: whether this transport is already attached |
| 265 | * @list: list linkage to all attached transports |
| 266 | * @match: handler to allow the transport driver to match up a given netdev |
| 267 | * @create: handler to sysfs entry of create for FCoE instances |
| 268 | * @destroy: handler to sysfs entry of destroy for FCoE instances |
| 269 | * @enable: handler to sysfs entry of enable for FCoE instances |
| 270 | * @disable: handler to sysfs entry of disable for FCoE instances |
| 271 | */ |
| 272 | struct fcoe_transport { |
| 273 | char name[IFNAMSIZ]; |
| 274 | bool attached; |
| 275 | struct list_head list; |
| 276 | bool (*match) (struct net_device *device); |
| 277 | int (*create) (struct net_device *device, enum fip_state fip_mode); |
| 278 | int (*destroy) (struct net_device *device); |
| 279 | int (*enable) (struct net_device *device); |
| 280 | int (*disable) (struct net_device *device); |
| 281 | }; |
| 282 | |
| 283 | /** |
Bhanu Prakash Gollapudi | 8597ae8 | 2011-01-28 16:05:37 -0800 | [diff] [blame] | 284 | * struct fcoe_percpu_s - The context for FCoE receive thread(s) |
| 285 | * @thread: The thread context |
| 286 | * @fcoe_rx_list: The queue of pending packets to process |
| 287 | * @page: The memory page for calculating frame trailer CRCs |
| 288 | * @crc_eof_offset: The offset into the CRC page pointing to available |
| 289 | * memory for a new trailer |
| 290 | */ |
| 291 | struct fcoe_percpu_s { |
| 292 | struct task_struct *thread; |
| 293 | struct sk_buff_head fcoe_rx_list; |
| 294 | struct page *crc_eof_page; |
| 295 | int crc_eof_offset; |
| 296 | }; |
| 297 | |
| 298 | /** |
| 299 | * struct fcoe_port - The FCoE private structure |
| 300 | * @priv: The associated fcoe interface. The structure is |
| 301 | * defined by the low level driver |
| 302 | * @lport: The associated local port |
| 303 | * @fcoe_pending_queue: The pending Rx queue of skbs |
| 304 | * @fcoe_pending_queue_active: Indicates if the pending queue is active |
john fastabend | 6f6c2aa | 2011-11-18 13:35:56 -0800 | [diff] [blame] | 305 | * @priority: Packet priority (DCB) |
Bhanu Prakash Gollapudi | 8597ae8 | 2011-01-28 16:05:37 -0800 | [diff] [blame] | 306 | * @max_queue_depth: Max queue depth of pending queue |
| 307 | * @min_queue_depth: Min queue depth of pending queue |
| 308 | * @timer: The queue timer |
| 309 | * @destroy_work: Handle for work context |
| 310 | * (to prevent RTNL deadlocks) |
| 311 | * @data_srt_addr: Source address for data |
| 312 | * |
| 313 | * An instance of this structure is to be allocated along with the |
| 314 | * Scsi_Host and libfc fc_lport structures. |
| 315 | */ |
| 316 | struct fcoe_port { |
| 317 | void *priv; |
| 318 | struct fc_lport *lport; |
| 319 | struct sk_buff_head fcoe_pending_queue; |
| 320 | u8 fcoe_pending_queue_active; |
john fastabend | 6f6c2aa | 2011-11-18 13:35:56 -0800 | [diff] [blame] | 321 | u8 priority; |
Bhanu Prakash Gollapudi | 8597ae8 | 2011-01-28 16:05:37 -0800 | [diff] [blame] | 322 | u32 max_queue_depth; |
| 323 | u32 min_queue_depth; |
| 324 | struct timer_list timer; |
| 325 | struct work_struct destroy_work; |
| 326 | u8 data_src_addr[ETH_ALEN]; |
| 327 | }; |
| 328 | void fcoe_clean_pending_queue(struct fc_lport *); |
| 329 | void fcoe_check_wait_queue(struct fc_lport *lport, struct sk_buff *skb); |
| 330 | void fcoe_queue_timer(ulong lport); |
| 331 | int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen, |
| 332 | struct fcoe_percpu_s *fps); |
| 333 | |
| 334 | /** |
Yi Zou | 0ade7d2 | 2011-01-28 16:04:50 -0800 | [diff] [blame] | 335 | * struct netdev_list |
| 336 | * A mapping from netdevice to fcoe_transport |
| 337 | */ |
| 338 | struct fcoe_netdev_mapping { |
| 339 | struct list_head list; |
| 340 | struct net_device *netdev; |
| 341 | struct fcoe_transport *ft; |
| 342 | }; |
| 343 | |
| 344 | /* fcoe transports registration and deregistration */ |
| 345 | int fcoe_transport_attach(struct fcoe_transport *ft); |
| 346 | int fcoe_transport_detach(struct fcoe_transport *ft); |
Vasu Dev | 519e513 | 2010-07-20 15:19:32 -0700 | [diff] [blame] | 347 | |
Robert Love | 85b4aa4 | 2008-12-09 15:10:24 -0800 | [diff] [blame] | 348 | #endif /* _LIBFCOE_H */ |