diff options
Diffstat (limited to 'drivers/infiniband/hw/nes/nes_cm.h')
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_cm.h | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/nes/nes_cm.h b/drivers/infiniband/hw/nes/nes_cm.h new file mode 100644 index 00000000000..a59f0a7fb27 --- /dev/null +++ b/drivers/infiniband/hw/nes/nes_cm.h @@ -0,0 +1,433 @@ +/* + * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef NES_CM_H +#define NES_CM_H + +#define QUEUE_EVENTS + +#define NES_MANAGE_APBVT_DEL 0 +#define NES_MANAGE_APBVT_ADD 1 + +/* IETF MPA -- defines, enums, structs */ +#define IEFT_MPA_KEY_REQ "MPA ID Req Frame" +#define IEFT_MPA_KEY_REP "MPA ID Rep Frame" +#define IETF_MPA_KEY_SIZE 16 +#define IETF_MPA_VERSION 1 + +enum ietf_mpa_flags { + IETF_MPA_FLAGS_MARKERS = 0x80, /* receive Markers */ + IETF_MPA_FLAGS_CRC = 0x40, /* receive Markers */ + IETF_MPA_FLAGS_REJECT = 0x20, /* Reject */ +}; + +struct ietf_mpa_frame { + u8 key[IETF_MPA_KEY_SIZE]; + u8 flags; + u8 rev; + __be16 priv_data_len; + u8 priv_data[0]; +}; + +#define ietf_mpa_req_resp_frame ietf_mpa_frame + +struct nes_v4_quad { + u32 rsvd0; + __le32 DstIpAdrIndex; /* Only most significant 5 bits are valid */ + __be32 SrcIpadr; + __be16 TcpPorts[2]; /* src is low, dest is high */ +}; + +struct nes_cm_node; +enum nes_timer_type { + NES_TIMER_TYPE_SEND, + NES_TIMER_TYPE_RECV, + NES_TIMER_NODE_CLEANUP, + NES_TIMER_TYPE_CLOSE, +}; + +#define MAX_NES_IFS 4 + +#define SET_ACK 1 +#define SET_SYN 2 +#define SET_FIN 4 +#define SET_RST 8 + +struct option_base { + u8 optionnum; + u8 length; +}; + +enum option_numbers { + OPTION_NUMBER_END, + OPTION_NUMBER_NONE, + OPTION_NUMBER_MSS, + OPTION_NUMBER_WINDOW_SCALE, + OPTION_NUMBER_SACK_PERM, + OPTION_NUMBER_SACK, + OPTION_NUMBER_WRITE0 = 0xbc +}; + +struct option_mss { + u8 optionnum; + u8 length; + __be16 mss; +}; + +struct option_windowscale { + u8 optionnum; + u8 length; + u8 shiftcount; +}; + +union all_known_options { + char as_end; + struct option_base as_base; + struct option_mss as_mss; + struct option_windowscale as_windowscale; +}; + +struct nes_timer_entry { + struct list_head list; + unsigned long timetosend; /* jiffies */ + struct sk_buff *skb; + u32 type; + u32 retrycount; + u32 retranscount; + u32 context; + u32 seq_num; + u32 send_retrans; + int close_when_complete; + struct net_device *netdev; +}; + +#define NES_DEFAULT_RETRYS 64 +#define NES_DEFAULT_RETRANS 8 +#ifdef CONFIG_INFINIBAND_NES_DEBUG +#define NES_RETRY_TIMEOUT (1000*HZ/1000) +#else +#define NES_RETRY_TIMEOUT (3000*HZ/1000) +#endif +#define NES_SHORT_TIME (10) +#define NES_LONG_TIME (2000*HZ/1000) + +#define NES_CM_HASHTABLE_SIZE 1024 +#define NES_CM_TCP_TIMER_INTERVAL 3000 +#define NES_CM_DEFAULT_MTU 1540 +#define NES_CM_DEFAULT_FRAME_CNT 10 +#define NES_CM_THREAD_STACK_SIZE 256 +#define NES_CM_DEFAULT_RCV_WND 64240 // before we know that window scaling is allowed +#define NES_CM_DEFAULT_RCV_WND_SCALED 256960 // after we know that window scaling is allowed +#define NES_CM_DEFAULT_RCV_WND_SCALE 2 +#define NES_CM_DEFAULT_FREE_PKTS 0x000A +#define NES_CM_FREE_PKT_LO_WATERMARK 2 + +#define NES_CM_DEFAULT_MSS 536 + +#define NES_CM_DEF_SEQ 0x159bf75f +#define NES_CM_DEF_LOCAL_ID 0x3b47 + +#define NES_CM_DEF_SEQ2 0x18ed5740 +#define NES_CM_DEF_LOCAL_ID2 0xb807 + +typedef u32 nes_addr_t; + +#define nes_cm_tsa_context nes_qp_context + +struct nes_qp; + +/* cm node transition states */ +enum nes_cm_node_state { + NES_CM_STATE_UNKNOWN, + NES_CM_STATE_INITED, + NES_CM_STATE_LISTENING, + NES_CM_STATE_SYN_RCVD, + NES_CM_STATE_SYN_SENT, + NES_CM_STATE_ONE_SIDE_ESTABLISHED, + NES_CM_STATE_ESTABLISHED, + NES_CM_STATE_ACCEPTING, + NES_CM_STATE_MPAREQ_SENT, + NES_CM_STATE_TSA, + NES_CM_STATE_FIN_WAIT1, + NES_CM_STATE_FIN_WAIT2, + NES_CM_STATE_CLOSE_WAIT, + NES_CM_STATE_TIME_WAIT, + NES_CM_STATE_LAST_ACK, + NES_CM_STATE_CLOSING, + NES_CM_STATE_CLOSED +}; + +/* type of nes connection */ +enum nes_cm_conn_type { + NES_CM_IWARP_CONN_TYPE, +}; + +/* CM context params */ +struct nes_cm_tcp_context { + u8 client; + + u32 loc_seq_num; + u32 loc_ack_num; + u32 rem_ack_num; + u32 rcv_nxt; + + u32 loc_id; + u32 rem_id; + + u32 snd_wnd; + u32 max_snd_wnd; + + u32 rcv_wnd; + u32 mss; + u8 snd_wscale; + u8 rcv_wscale; + + struct nes_cm_tsa_context tsa_cntxt; + struct timeval sent_ts; +}; + + +enum nes_cm_listener_state { + NES_CM_LISTENER_PASSIVE_STATE=1, + NES_CM_LISTENER_ACTIVE_STATE=2, + NES_CM_LISTENER_EITHER_STATE=3 +}; + +struct nes_cm_listener { + struct list_head list; + u64 session_id; + struct nes_cm_core *cm_core; + u8 loc_mac[ETH_ALEN]; + nes_addr_t loc_addr; + u16 loc_port; + struct iw_cm_id *cm_id; + enum nes_cm_conn_type conn_type; + atomic_t ref_count; + struct nes_vnic *nesvnic; + atomic_t pend_accepts_cnt; + int backlog; + enum nes_cm_listener_state listener_state; + u32 reused_node; +}; + +/* per connection node and node state information */ +struct nes_cm_node { + u64 session_id; + u32 hashkey; + + nes_addr_t loc_addr, rem_addr; + u16 loc_port, rem_port; + + u8 loc_mac[ETH_ALEN]; + u8 rem_mac[ETH_ALEN]; + + enum nes_cm_node_state state; + struct nes_cm_tcp_context tcp_cntxt; + struct nes_cm_core *cm_core; + struct sk_buff_head resend_list; + atomic_t ref_count; + struct net_device *netdev; + + struct nes_cm_node *loopbackpartner; + struct list_head retrans_list; + spinlock_t retrans_list_lock; + struct list_head recv_list; + spinlock_t recv_list_lock; + + int send_write0; + union { + struct ietf_mpa_frame mpa_frame; + u8 mpa_frame_buf[NES_CM_DEFAULT_MTU]; + }; + u16 mpa_frame_size; + struct iw_cm_id *cm_id; + struct list_head list; + int accelerated; + struct nes_cm_listener *listener; + enum nes_cm_conn_type conn_type; + struct nes_vnic *nesvnic; + int apbvt_set; + int accept_pend; +}; + +/* structure for client or CM to fill when making CM api calls. */ +/* - only need to set relevant data, based on op. */ +struct nes_cm_info { + union { + struct iw_cm_id *cm_id; + struct net_device *netdev; + }; + + u16 loc_port; + u16 rem_port; + nes_addr_t loc_addr; + nes_addr_t rem_addr; + + enum nes_cm_conn_type conn_type; + int backlog; +}; + +/* CM event codes */ +enum nes_cm_event_type { + NES_CM_EVENT_UNKNOWN, + NES_CM_EVENT_ESTABLISHED, + NES_CM_EVENT_MPA_REQ, + NES_CM_EVENT_MPA_CONNECT, + NES_CM_EVENT_MPA_ACCEPT, + NES_CM_EVENT_MPA_ESTABLISHED, + NES_CM_EVENT_CONNECTED, + NES_CM_EVENT_CLOSED, + NES_CM_EVENT_RESET, + NES_CM_EVENT_DROPPED_PKT, + NES_CM_EVENT_CLOSE_IMMED, + NES_CM_EVENT_CLOSE_HARD, + NES_CM_EVENT_CLOSE_CLEAN, + NES_CM_EVENT_ABORTED, + NES_CM_EVENT_SEND_FIRST +}; + +/* event to post to CM event handler */ +struct nes_cm_event { + enum nes_cm_event_type type; + + struct nes_cm_info cm_info; + struct work_struct event_work; + struct nes_cm_node *cm_node; +}; + +struct nes_cm_core { + enum nes_cm_node_state state; + atomic_t session_id; + + atomic_t listen_node_cnt; + struct nes_cm_node listen_list; + spinlock_t listen_list_lock; + + u32 mtu; + u32 free_tx_pkt_max; + u32 rx_pkt_posted; + struct sk_buff_head tx_free_list; + atomic_t ht_node_cnt; + struct list_head connected_nodes; + /* struct list_head hashtable[NES_CM_HASHTABLE_SIZE]; */ + spinlock_t ht_lock; + + struct timer_list tcp_timer; + + struct nes_cm_ops *api; + + int (*post_event)(struct nes_cm_event *event); + atomic_t events_posted; + struct workqueue_struct *event_wq; + struct workqueue_struct *disconn_wq; + + atomic_t node_cnt; + u64 aborted_connects; + u32 options; + + struct nes_cm_node *current_listen_node; +}; + + +#define NES_CM_SET_PKT_SIZE (1 << 1) +#define NES_CM_SET_FREE_PKT_Q_SIZE (1 << 2) + +/* CM ops/API for client interface */ +struct nes_cm_ops { + int (*accelerated)(struct nes_cm_core *, struct nes_cm_node *); + struct nes_cm_listener * (*listen)(struct nes_cm_core *, struct nes_vnic *, + struct nes_cm_info *); + int (*stop_listener)(struct nes_cm_core *, struct nes_cm_listener *); + struct nes_cm_node * (*connect)(struct nes_cm_core *, + struct nes_vnic *, struct ietf_mpa_frame *, + struct nes_cm_info *); + int (*close)(struct nes_cm_core *, struct nes_cm_node *); + int (*accept)(struct nes_cm_core *, struct ietf_mpa_frame *, + struct nes_cm_node *); + int (*reject)(struct nes_cm_core *, struct ietf_mpa_frame *, + struct nes_cm_node *); + int (*recv_pkt)(struct nes_cm_core *, struct nes_vnic *, + struct sk_buff *); + int (*destroy_cm_core)(struct nes_cm_core *); + int (*get)(struct nes_cm_core *); + int (*set)(struct nes_cm_core *, u32, u32); +}; + + +int send_mpa_request(struct nes_cm_node *); +struct sk_buff *form_cm_frame(struct sk_buff *, struct nes_cm_node *, + void *, u32, void *, u32, u8); +int schedule_nes_timer(struct nes_cm_node *, struct sk_buff *, + enum nes_timer_type, int, int); +void nes_cm_timer_tick(unsigned long); +int send_syn(struct nes_cm_node *, u32); +int send_reset(struct nes_cm_node *); +int send_ack(struct nes_cm_node *); +int send_fin(struct nes_cm_node *, struct sk_buff *); +struct sk_buff *get_free_pkt(struct nes_cm_node *); +int process_packet(struct nes_cm_node *, struct sk_buff *, struct nes_cm_core *); + +struct nes_cm_node * mini_cm_connect(struct nes_cm_core *, + struct nes_vnic *, struct ietf_mpa_frame *, struct nes_cm_info *); +int mini_cm_accept(struct nes_cm_core *, struct ietf_mpa_frame *, struct nes_cm_node *); +int mini_cm_reject(struct nes_cm_core *, struct ietf_mpa_frame *, struct nes_cm_node *); +int mini_cm_close(struct nes_cm_core *, struct nes_cm_node *); +int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *, struct sk_buff *); +struct nes_cm_core *mini_cm_alloc_core(struct nes_cm_info *); +int mini_cm_dealloc_core(struct nes_cm_core *); +int mini_cm_get(struct nes_cm_core *); +int mini_cm_set(struct nes_cm_core *, u32, u32); + +int nes_cm_disconn(struct nes_qp *); +void nes_disconnect_worker(struct work_struct *); +int nes_cm_disconn_true(struct nes_qp *); +int nes_disconnect(struct nes_qp *, int); + +int nes_accept(struct iw_cm_id *, struct iw_cm_conn_param *); +int nes_reject(struct iw_cm_id *, const void *, u8); +int nes_connect(struct iw_cm_id *, struct iw_cm_conn_param *); +int nes_create_listen(struct iw_cm_id *, int); +int nes_destroy_listen(struct iw_cm_id *); + +int nes_cm_recv(struct sk_buff *, struct net_device *); +int nes_cm_start(void); +int nes_cm_stop(void); + +/* CM event handler functions */ +void cm_event_connected(struct nes_cm_event *); +void cm_event_connect_error(struct nes_cm_event *); +void cm_event_reset(struct nes_cm_event *); +void cm_event_mpa_req(struct nes_cm_event *); +int nes_cm_post_event(struct nes_cm_event *); + +#endif /* NES_CM_H */ |