| /* |
| * Copyright (c) 2006 - 2009 Intel Corporation. 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 |
| |
| #define NES_MPA_REQUEST_ACCEPT 1 |
| #define NES_MPA_REQUEST_REJECT 2 |
| |
| /* 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 |
| #define IETF_MAX_PRIV_DATA_LEN 512 |
| #define IETF_MPA_FRAME_SIZE 20 |
| |
| 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 NES_PASSIVE_STATE_INDICATED 0 |
| #define NES_DO_NOT_SEND_RESET_EVENT 1 |
| #define NES_SEND_RESET_EVENT 2 |
| |
| #define MAX_NES_IFS 4 |
| |
| #define SET_ACK 1 |
| #define SET_SYN 2 |
| #define SET_FIN 4 |
| #define SET_RST 8 |
| |
| #define TCP_OPTIONS_PADDING 3 |
| |
| 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_MAX_TIMEOUT ((unsigned long) (12*HZ)) |
| |
| #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 |
| #define MAX_CM_BUFFER (IETF_MPA_FRAME_SIZE + IETF_MAX_PRIV_DATA_LEN) |
| |
| |
| 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_MPAREQ_RCVD, |
| NES_CM_STATE_MPAREJ_RCVD, |
| 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_LISTENER_DESTROYED, |
| NES_CM_STATE_CLOSED |
| }; |
| |
| enum nes_tcpip_pkt_type { |
| NES_PKT_TYPE_UNKNOWN, |
| NES_PKT_TYPE_SYN, |
| NES_PKT_TYPE_SYNACK, |
| NES_PKT_TYPE_ACK, |
| NES_PKT_TYPE_FIN, |
| NES_PKT_TYPE_RST |
| }; |
| |
| |
| /* 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; |
| 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 { |
| 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 nes_timer_entry *send_entry; |
| |
| spinlock_t retrans_list_lock; |
| struct nes_timer_entry *recv_entry; |
| |
| int send_write0; |
| union { |
| struct ietf_mpa_frame mpa_frame; |
| u8 mpa_frame_buf[MAX_CM_BUFFER]; |
| }; |
| 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; |
| struct list_head timer_entry; |
| struct list_head reset_entry; |
| struct nes_qp *nesqp; |
| atomic_t passive_state; |
| }; |
| |
| /* 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_REJECT, |
| 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 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; |
| 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 *, u16, void *, |
| 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 schedule_nes_timer(struct nes_cm_node *, struct sk_buff *, |
| enum nes_timer_type, int, 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); |
| |
| #endif /* NES_CM_H */ |
