Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright(c) 2009 Intel Corporation. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms and conditions of the GNU General Public License, |
| 6 | * version 2, as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 11 | * more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along with |
| 14 | * this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 16 | * |
| 17 | * Maintained at www.Open-FCoE.org |
| 18 | */ |
| 19 | |
| 20 | #ifndef _FCOE_H_ |
| 21 | #define _FCOE_H_ |
| 22 | |
| 23 | #include <linux/skbuff.h> |
| 24 | #include <linux/kthread.h> |
| 25 | |
| 26 | #define FCOE_MAX_QUEUE_DEPTH 256 |
| 27 | #define FCOE_LOW_QUEUE_DEPTH 32 |
| 28 | |
Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 29 | #define FCOE_WORD_TO_BYTE 4 |
| 30 | |
| 31 | #define FCOE_VERSION "0.1" |
| 32 | #define FCOE_NAME "fcoe" |
| 33 | #define FCOE_VENDOR "Open-FCoE.org" |
| 34 | |
| 35 | #define FCOE_MAX_LUN 255 |
| 36 | #define FCOE_MAX_FCP_TARGET 256 |
| 37 | |
| 38 | #define FCOE_MAX_OUTSTANDING_COMMANDS 1024 |
| 39 | |
Vasu Dev | d717968 | 2009-07-29 17:05:21 -0700 | [diff] [blame] | 40 | #define FCOE_MIN_XID 0x0000 /* the min xid supported by fcoe_sw */ |
Vasu Dev | e4bc50b | 2009-08-25 13:58:47 -0700 | [diff] [blame] | 41 | #define FCOE_MAX_XID 0x0FFF /* the max xid supported by fcoe_sw */ |
Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 42 | |
Yi Zou | 7221d7e | 2009-10-21 16:27:52 -0700 | [diff] [blame^] | 43 | /* |
| 44 | * Max MTU for FCoE: 14 (FCoE header) + 24 (FC header) + 2112 (max FC payload) |
| 45 | * + 4 (FC CRC) + 4 (FCoE trailer) = 2158 bytes |
| 46 | */ |
| 47 | #define FCOE_MTU 2158 |
| 48 | |
Robert Love | d5488eb | 2009-06-10 15:30:59 -0700 | [diff] [blame] | 49 | unsigned int fcoe_debug_logging; |
| 50 | module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR); |
| 51 | MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels"); |
| 52 | |
| 53 | #define FCOE_LOGGING 0x01 /* General logging, not categorized */ |
| 54 | #define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */ |
| 55 | |
| 56 | #define FCOE_CHECK_LOGGING(LEVEL, CMD) \ |
| 57 | do { \ |
| 58 | if (unlikely(fcoe_debug_logging & LEVEL)) \ |
| 59 | do { \ |
| 60 | CMD; \ |
| 61 | } while (0); \ |
Joe Eykholt | a69b06b | 2009-08-25 13:58:42 -0700 | [diff] [blame] | 62 | } while (0) |
Robert Love | d5488eb | 2009-06-10 15:30:59 -0700 | [diff] [blame] | 63 | |
| 64 | #define FCOE_DBG(fmt, args...) \ |
| 65 | FCOE_CHECK_LOGGING(FCOE_LOGGING, \ |
| 66 | printk(KERN_INFO "fcoe: " fmt, ##args);) |
| 67 | |
| 68 | #define FCOE_NETDEV_DBG(netdev, fmt, args...) \ |
| 69 | FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING, \ |
Robert Love | ee610c6 | 2009-08-25 13:58:31 -0700 | [diff] [blame] | 70 | printk(KERN_INFO "fcoe: %s: " fmt, \ |
Robert Love | d5488eb | 2009-06-10 15:30:59 -0700 | [diff] [blame] | 71 | netdev->name, ##args);) |
| 72 | |
Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 73 | /* |
| 74 | * this percpu struct for fcoe |
| 75 | */ |
| 76 | struct fcoe_percpu_s { |
| 77 | struct task_struct *thread; |
| 78 | struct sk_buff_head fcoe_rx_list; |
| 79 | struct page *crc_eof_page; |
| 80 | int crc_eof_offset; |
| 81 | }; |
| 82 | |
| 83 | /* |
Chris Leech | 014f5c3 | 2009-08-25 13:59:30 -0700 | [diff] [blame] | 84 | * an FCoE interface, 1:1 with netdev |
Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 85 | */ |
Chris Leech | 014f5c3 | 2009-08-25 13:59:30 -0700 | [diff] [blame] | 86 | struct fcoe_interface { |
Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 87 | struct list_head list; |
Chris Leech | 2502498 | 2009-08-25 13:59:35 -0700 | [diff] [blame] | 88 | struct net_device *netdev; |
Chris Leech | 259ad85 | 2009-08-25 13:59:41 -0700 | [diff] [blame] | 89 | struct packet_type fcoe_packet_type; |
| 90 | struct packet_type fip_packet_type; |
Chris Leech | 3fe9a0b | 2009-08-25 13:59:46 -0700 | [diff] [blame] | 91 | struct fcoe_ctlr ctlr; |
Chris Leech | 991cbb6 | 2009-08-25 13:59:51 -0700 | [diff] [blame] | 92 | struct fc_exch_mgr *oem; /* offload exchange manager */ |
Chris Leech | 030f4e0 | 2009-08-25 14:00:02 -0700 | [diff] [blame] | 93 | struct kref kref; |
Chris Leech | 014f5c3 | 2009-08-25 13:59:30 -0700 | [diff] [blame] | 94 | }; |
| 95 | |
| 96 | /* |
| 97 | * the FCoE private structure that's allocated along with the |
| 98 | * Scsi_Host and libfc fc_lport structures |
| 99 | */ |
| 100 | struct fcoe_port { |
| 101 | struct fcoe_interface *fcoe; |
Chris Leech | 2e70e24 | 2009-08-25 14:00:23 -0700 | [diff] [blame] | 102 | struct fc_lport *lport; |
Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 103 | struct sk_buff_head fcoe_pending_queue; |
| 104 | u8 fcoe_pending_queue_active; |
Vasu Dev | 1047f22 | 2009-05-06 10:52:40 -0700 | [diff] [blame] | 105 | struct timer_list timer; /* queue timer */ |
Chris Leech | 2e70e24 | 2009-08-25 14:00:23 -0700 | [diff] [blame] | 106 | struct work_struct destroy_work; /* to prevent rtnl deadlocks */ |
Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 107 | }; |
| 108 | |
Chris Leech | 3fe9a0b | 2009-08-25 13:59:46 -0700 | [diff] [blame] | 109 | #define fcoe_from_ctlr(fip) container_of(fip, struct fcoe_interface, ctlr) |
Joe Eykholt | 97c8389 | 2009-03-17 11:42:40 -0700 | [diff] [blame] | 110 | |
Chris Leech | 2502498 | 2009-08-25 13:59:35 -0700 | [diff] [blame] | 111 | static inline struct net_device *fcoe_netdev(const struct fc_lport *lp) |
Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 112 | { |
Chris Leech | 2502498 | 2009-08-25 13:59:35 -0700 | [diff] [blame] | 113 | return ((struct fcoe_port *)lport_priv(lp))->fcoe->netdev; |
Vasu Dev | fdd7802 | 2009-03-17 11:42:24 -0700 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | #endif /* _FCOE_H_ */ |