diff options
Diffstat (limited to 'drivers/scsi/cxgb3i/cxgb3i_offload.h')
| -rw-r--r-- | drivers/scsi/cxgb3i/cxgb3i_offload.h | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/drivers/scsi/cxgb3i/cxgb3i_offload.h b/drivers/scsi/cxgb3i/cxgb3i_offload.h deleted file mode 100644 index 6a1d86b1fafe..000000000000 --- a/drivers/scsi/cxgb3i/cxgb3i_offload.h +++ /dev/null @@ -1,243 +0,0 @@ -/* - * cxgb3i_offload.h: Chelsio S3xx iscsi offloaded tcp connection management - * - * Copyright (C) 2003-2008 Chelsio Communications. All rights reserved. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the LICENSE file included in this - * release for licensing terms and conditions. - * - * Written by: Dimitris Michailidis (dm@chelsio.com) - * Karen Xie (kxie@chelsio.com) - */ - -#ifndef _CXGB3I_OFFLOAD_H -#define _CXGB3I_OFFLOAD_H - -#include <linux/skbuff.h> -#include <linux/in.h> - -#include "common.h" -#include "adapter.h" -#include "t3cdev.h" -#include "cxgb3_offload.h" - -#define cxgb3i_log_error(fmt...) printk(KERN_ERR "cxgb3i: ERR! " fmt) -#define cxgb3i_log_warn(fmt...) printk(KERN_WARNING "cxgb3i: WARN! " fmt) -#define cxgb3i_log_info(fmt...) printk(KERN_INFO "cxgb3i: " fmt) -#define cxgb3i_log_debug(fmt, args...) \ - printk(KERN_INFO "cxgb3i: %s - " fmt, __func__ , ## args) - -/** - * struct s3_conn - an iscsi tcp connection structure - * - * @dev: net device of with connection - * @cdev: adapter t3cdev for net device - * @flags: see c3cn_flags below - * @tid: connection id assigned by the h/w - * @qset: queue set used by connection - * @mss_idx: Maximum Segment Size table index - * @l2t: ARP resolution entry for offload packets - * @wr_max: maximum in-flight writes - * @wr_avail: number of writes available - * @wr_unacked: writes since last request for completion notification - * @wr_pending_head: head of pending write queue - * @wr_pending_tail: tail of pending write queue - * @cpl_close: skb for cpl_close_req - * @cpl_abort_req: skb for cpl_abort_req - * @cpl_abort_rpl: skb for cpl_abort_rpl - * @lock: connection status lock - * @refcnt: reference count on connection - * @state: connection state - * @saddr: source ip/port address - * @daddr: destination ip/port address - * @dst_cache: reference to destination route - * @receive_queue: received PDUs - * @write_queue: un-pushed pending writes - * @retry_timer: retry timer for various operations - * @err: connection error status - * @callback_lock: lock for opaque user context - * @user_data: opaque user context - * @rcv_nxt: next receive seq. # - * @copied_seq: head of yet unread data - * @rcv_wup: rcv_nxt on last window update sent - * @snd_nxt: next sequence we send - * @snd_una: first byte we want an ack for - * @write_seq: tail+1 of data held in send buffer - */ -struct s3_conn { - struct net_device *dev; - struct t3cdev *cdev; - unsigned long flags; - int tid; - int qset; - int mss_idx; - struct l2t_entry *l2t; - int wr_max; - int wr_avail; - int wr_unacked; - struct sk_buff *wr_pending_head; - struct sk_buff *wr_pending_tail; - struct sk_buff *cpl_close; - struct sk_buff *cpl_abort_req; - struct sk_buff *cpl_abort_rpl; - spinlock_t lock; - atomic_t refcnt; - volatile unsigned int state; - struct sockaddr_in saddr; - struct sockaddr_in daddr; - struct dst_entry *dst_cache; - struct sk_buff_head receive_queue; - struct sk_buff_head write_queue; - struct timer_list retry_timer; - int err; - rwlock_t callback_lock; - void *user_data; - - u32 rcv_nxt; - u32 copied_seq; - u32 rcv_wup; - u32 snd_nxt; - u32 snd_una; - u32 write_seq; -}; - -/* - * connection state - */ -enum conn_states { - C3CN_STATE_CONNECTING = 1, - C3CN_STATE_ESTABLISHED, - C3CN_STATE_ACTIVE_CLOSE, - C3CN_STATE_PASSIVE_CLOSE, - C3CN_STATE_CLOSE_WAIT_1, - C3CN_STATE_CLOSE_WAIT_2, - C3CN_STATE_ABORTING, - C3CN_STATE_CLOSED, -}; - -static inline unsigned int c3cn_is_closing(const struct s3_conn *c3cn) -{ - return c3cn->state >= C3CN_STATE_ACTIVE_CLOSE; -} -static inline unsigned int c3cn_is_established(const struct s3_conn *c3cn) -{ - return c3cn->state == C3CN_STATE_ESTABLISHED; -} - -/* - * Connection flags -- many to track some close related events. - */ -enum c3cn_flags { - C3CN_ABORT_RPL_RCVD, /* received one ABORT_RPL_RSS message */ - C3CN_ABORT_REQ_RCVD, /* received one ABORT_REQ_RSS message */ - C3CN_ABORT_RPL_PENDING, /* expecting an abort reply */ - C3CN_TX_DATA_SENT, /* already sent a TX_DATA WR */ - C3CN_ACTIVE_CLOSE_NEEDED, /* need to be closed */ - C3CN_OFFLOAD_DOWN /* offload function off */ -}; - -/** - * cxgb3i_sdev_data - Per adapter data. - * Linked off of each Ethernet device port on the adapter. - * Also available via the t3cdev structure since we have pointers to our port - * net_device's there ... - * - * @list: list head to link elements - * @cdev: t3cdev adapter - * @client: CPL client pointer - * @ports: array of adapter ports - * @sport_next: next port - * @sport_conn: source port connection - */ -struct cxgb3i_sdev_data { - struct list_head list; - struct t3cdev *cdev; - struct cxgb3_client *client; - struct adap_ports ports; - spinlock_t lock; - unsigned int sport_next; - struct s3_conn *sport_conn[0]; -}; -#define NDEV2CDATA(ndev) (*(struct cxgb3i_sdev_data **)&(ndev)->ec_ptr) -#define CXGB3_SDEV_DATA(cdev) NDEV2CDATA((cdev)->lldev) - -void cxgb3i_sdev_cleanup(void); -int cxgb3i_sdev_init(cxgb3_cpl_handler_func *); -void cxgb3i_sdev_add(struct t3cdev *, struct cxgb3_client *); -void cxgb3i_sdev_remove(struct t3cdev *); - -struct s3_conn *cxgb3i_c3cn_create(void); -int cxgb3i_c3cn_connect(struct net_device *, struct s3_conn *, - struct sockaddr_in *); -void cxgb3i_c3cn_rx_credits(struct s3_conn *, int); -int cxgb3i_c3cn_send_pdus(struct s3_conn *, struct sk_buff *); -void cxgb3i_c3cn_release(struct s3_conn *); - -/** - * cxgb3_skb_cb - control block for received pdu state and ULP mode management. - * - * @flag: see C3CB_FLAG_* below - * @ulp_mode: ULP mode/submode of sk_buff - * @seq: tcp sequence number - */ -struct cxgb3_skb_rx_cb { - __u32 ddigest; /* data digest */ - __u32 pdulen; /* recovered pdu length */ -}; - -struct cxgb3_skb_tx_cb { - struct sk_buff *wr_next; /* next wr */ -}; - -struct cxgb3_skb_cb { - __u8 flags; - __u8 ulp_mode; - __u32 seq; - union { - struct cxgb3_skb_rx_cb rx; - struct cxgb3_skb_tx_cb tx; - }; -}; - -#define CXGB3_SKB_CB(skb) ((struct cxgb3_skb_cb *)&((skb)->cb[0])) -#define skb_flags(skb) (CXGB3_SKB_CB(skb)->flags) -#define skb_ulp_mode(skb) (CXGB3_SKB_CB(skb)->ulp_mode) -#define skb_tcp_seq(skb) (CXGB3_SKB_CB(skb)->seq) -#define skb_rx_ddigest(skb) (CXGB3_SKB_CB(skb)->rx.ddigest) -#define skb_rx_pdulen(skb) (CXGB3_SKB_CB(skb)->rx.pdulen) -#define skb_tx_wr_next(skb) (CXGB3_SKB_CB(skb)->tx.wr_next) - -enum c3cb_flags { - C3CB_FLAG_NEED_HDR = 1 << 0, /* packet needs a TX_DATA_WR header */ - C3CB_FLAG_NO_APPEND = 1 << 1, /* don't grow this skb */ - C3CB_FLAG_COMPL = 1 << 2, /* request WR completion */ -}; - -/** - * sge_opaque_hdr - - * Opaque version of structure the SGE stores at skb->head of TX_DATA packets - * and for which we must reserve space. - */ -struct sge_opaque_hdr { - void *dev; - dma_addr_t addr[MAX_SKB_FRAGS + 1]; -}; - -/* for TX: a skb must have a headroom of at least TX_HEADER_LEN bytes */ -#define TX_HEADER_LEN \ - (sizeof(struct tx_data_wr) + sizeof(struct sge_opaque_hdr)) -#define SKB_TX_HEADROOM SKB_MAX_HEAD(TX_HEADER_LEN) - -/* - * get and set private ip for iscsi traffic - */ -#define cxgb3i_get_private_ipv4addr(ndev) \ - (((struct port_info *)(netdev_priv(ndev)))->iscsi_ipv4addr) -#define cxgb3i_set_private_ipv4addr(ndev, addr) \ - (((struct port_info *)(netdev_priv(ndev)))->iscsi_ipv4addr) = addr - -/* max. connections per adapter */ -#define CXGB3I_MAX_CONN 16384 -#endif /* _CXGB3_OFFLOAD_H */ |