diff options
Diffstat (limited to 'drivers/scsi/fcoe/fcoe.h')
| -rw-r--r-- | drivers/scsi/fcoe/fcoe.h | 82 |
1 files changed, 59 insertions, 23 deletions
diff --git a/drivers/scsi/fcoe/fcoe.h b/drivers/scsi/fcoe/fcoe.h index ce7f60fb1bc0..c69b2c56c2d1 100644 --- a/drivers/scsi/fcoe/fcoe.h +++ b/drivers/scsi/fcoe/fcoe.h @@ -32,7 +32,7 @@ #define FCOE_NAME "fcoe" #define FCOE_VENDOR "Open-FCoE.org" -#define FCOE_MAX_LUN 255 +#define FCOE_MAX_LUN 0xFFFF #define FCOE_MAX_FCP_TARGET 256 #define FCOE_MAX_OUTSTANDING_COMMANDS 1024 @@ -40,11 +40,17 @@ #define FCOE_MIN_XID 0x0000 /* the min xid supported by fcoe_sw */ #define FCOE_MAX_XID 0x0FFF /* the max xid supported by fcoe_sw */ +/* + * 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 + unsigned int fcoe_debug_logging; module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels"); -#define FCOE_LOGGING 0x01 /* General logging, not categorized */ +#define FCOE_LOGGING 0x01 /* General logging, not categorized */ #define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */ #define FCOE_CHECK_LOGGING(LEVEL, CMD) \ @@ -64,8 +70,13 @@ do { \ printk(KERN_INFO "fcoe: %s: " fmt, \ netdev->name, ##args);) -/* - * this percpu struct for fcoe +/** + * struct fcoe_percpu_s - The per-CPU context for FCoE receive threads + * @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; @@ -74,37 +85,62 @@ struct fcoe_percpu_s { int crc_eof_offset; }; -/* - * an FCoE interface, 1:1 with netdev +/** + * struct fcoe_interface - A FCoE interface + * @list: Handle for a list of FCoE interfaces + * @netdev: The associated net device + * @fcoe_packet_type: FCoE packet type + * @fip_packet_type: FIP packet type + * @ctlr: The FCoE controller (for FIP) + * @oem: The offload exchange manager for all local port + * instances associated with this port + * @kref: The kernel reference + * + * This structure is 1:1 with a net devive. */ struct fcoe_interface { - struct list_head list; - struct net_device *netdev; - struct packet_type fcoe_packet_type; - struct packet_type fip_packet_type; - struct fcoe_ctlr ctlr; - struct fc_exch_mgr *oem; /* offload exchange manager */ - struct kref kref; + struct list_head list; + struct net_device *netdev; + struct packet_type fcoe_packet_type; + struct packet_type fip_packet_type; + struct fcoe_ctlr ctlr; + struct fc_exch_mgr *oem; + struct kref kref; }; -/* - * the FCoE private structure that's allocated along with the - * Scsi_Host and libfc fc_lport structures +/** + * struct fcoe_port - The FCoE private structure + * @fcoe: The associated fcoe interface + * @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 + * @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 { struct fcoe_interface *fcoe; - struct fc_lport *lport; - struct sk_buff_head fcoe_pending_queue; - u8 fcoe_pending_queue_active; - struct timer_list timer; /* queue timer */ - struct work_struct destroy_work; /* to prevent rtnl deadlocks */ + struct fc_lport *lport; + struct sk_buff_head fcoe_pending_queue; + u8 fcoe_pending_queue_active; + struct timer_list timer; + struct work_struct destroy_work; + u8 data_src_addr[ETH_ALEN]; }; #define fcoe_from_ctlr(fip) container_of(fip, struct fcoe_interface, ctlr) -static inline struct net_device *fcoe_netdev(const struct fc_lport *lp) +/** + * fcoe_netdev() - Return the net device associated with a local port + * @lport: The local port to get the net device from + */ +static inline struct net_device *fcoe_netdev(const struct fc_lport *lport) { - return ((struct fcoe_port *)lport_priv(lp))->fcoe->netdev; + return ((struct fcoe_port *)lport_priv(lport))->fcoe->netdev; } #endif /* _FCOE_H_ */ |