/******************************************************************************* * * Copyright (c) 2015-2016 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 * OpenFabrics.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 I40IW_CM_H #define I40IW_CM_H #define QUEUE_EVENTS #define I40IW_MANAGE_APBVT_DEL 0 #define I40IW_MANAGE_APBVT_ADD 1 #define I40IW_MPA_REQUEST_ACCEPT 1 #define I40IW_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 #define IETF_RTR_MSG_SIZE 4 #define IETF_MPA_V2_FLAG 0x10 #define SNDMARKER_SEQNMASK 0x000001FF #define I40IW_MAX_IETF_SIZE 32 /* IETF RTR MSG Fields */ #define IETF_PEER_TO_PEER 0x8000 #define IETF_FLPDU_ZERO_LEN 0x4000 #define IETF_RDMA0_WRITE 0x8000 #define IETF_RDMA0_READ 0x4000 #define IETF_NO_IRD_ORD 0x3FFF /* HW-supported IRD sizes*/ #define I40IW_HW_IRD_SETTING_2 2 #define I40IW_HW_IRD_SETTING_4 4 #define I40IW_HW_IRD_SETTING_8 8 #define I40IW_HW_IRD_SETTING_16 16 #define I40IW_HW_IRD_SETTING_32 32 #define I40IW_HW_IRD_SETTING_64 64 #define MAX_PORTS 65536 #define I40IW_VLAN_PRIO_SHIFT 13 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_v1 { 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 ietf_rtr_msg { __be16 ctrl_ird; __be16 ctrl_ord; }; struct ietf_mpa_v2 { u8 key[IETF_MPA_KEY_SIZE]; u8 flags; u8 rev; __be16 priv_data_len; struct ietf_rtr_msg rtr_msg; u8 priv_data[0]; }; struct i40iw_cm_node; enum i40iw_timer_type { I40IW_TIMER_TYPE_SEND, I40IW_TIMER_TYPE_RECV, I40IW_TIMER_NODE_CLEANUP, I40IW_TIMER_TYPE_CLOSE, }; #define I40IW_PASSIVE_STATE_INDICATED 0 #define I40IW_DO_NOT_SEND_RESET_EVENT 1 #define I40IW_SEND_RESET_EVENT 2 #define MAX_I40IW_IFS 4 #define SET_ACK 0x1 #define SET_SYN 0x2 #define SET_FIN 0x4 #define SET_RST 0x8 #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 i40iw_timer_entry { struct list_head list; unsigned long timetosend; /* jiffies */ struct i40iw_puda_buf *sqbuf; u32 type; u32 retrycount; u32 retranscount; u32 context; u32 send_retrans; int close_when_complete; }; #define I40IW_DEFAULT_RETRYS 64 #define I40IW_DEFAULT_RETRANS 8 #define I40IW_DEFAULT_TTL 0x40 #define I40IW_DEFAULT_RTT_VAR 0x6 #define I40IW_DEFAULT_SS_THRESH 0x3FFFFFFF #define I40IW_DEFAULT_REXMIT_THRESH 8 #define I40IW_RETRY_TIMEOUT HZ #define I40IW_SHORT_TIME 10 #define I40IW_LONG_TIME (2 * HZ) #define I40IW_MAX_TIMEOUT ((unsigned long)(12 * HZ)) #define I40IW_CM_HASHTABLE_SIZE 1024 #define I40IW_CM_TCP_TIMER_INTERVAL 3000 #define I40IW_CM_DEFAULT_MTU 1540 #define I40IW_CM_DEFAULT_FRAME_CNT 10 #define I40IW_CM_THREAD_STACK_SIZE 256 #define I40IW_CM_DEFAULT_RCV_WND 64240 #define I40IW_CM_DEFAULT_RCV_WND_SCALED 0x3fffc #define I40IW_CM_DEFAULT_RCV_WND_SCALE 2 #define I40IW_CM_DEFAULT_FREE_PKTS 0x000A #define I40IW_CM_FREE_PKT_LO_WATERMARK 2 #define I40IW_CM_DEFAULT_MSS 536 #define I40IW_CM_DEF_SEQ 0x159bf75f #define I40IW_CM_DEF_LOCAL_ID 0x3b47 #define I40IW_CM_DEF_SEQ2 0x18ed5740 #define I40IW_CM_DEF_LOCAL_ID2 0xb807 #define MAX_CM_BUFFER (I40IW_MAX_IETF_SIZE + IETF_MAX_PRIV_DATA_LEN) typedef u32 i40iw_addr_t; #define i40iw_cm_tsa_context i40iw_qp_context struct i40iw_qp; /* cm node transition states */ enum i40iw_cm_node_state { I40IW_CM_STATE_UNKNOWN, I40IW_CM_STATE_INITED, I40IW_CM_STATE_LISTENING, I40IW_CM_STATE_SYN_RCVD, I40IW_CM_STATE_SYN_SENT, I40IW_CM_STATE_ONE_SIDE_ESTABLISHED, I40IW_CM_STATE_ESTABLISHED, I40IW_CM_STATE_ACCEPTING, I40IW_CM_STATE_MPAREQ_SENT, I40IW_CM_STATE_MPAREQ_RCVD, I40IW_CM_STATE_MPAREJ_RCVD, I40IW_CM_STATE_OFFLOADED, I40IW_CM_STATE_FIN_WAIT1, I40IW_CM_STATE_FIN_WAIT2, I40IW_CM_STATE_CLOSE_WAIT, I40IW_CM_STATE_TIME_WAIT, I40IW_CM_STATE_LAST_ACK, I40IW_CM_STATE_CLOSING, I40IW_CM_STATE_LISTENER_DESTROYED, I40IW_CM_STATE_CLOSED }; enum mpa_frame_version { IETF_MPA_V1 = 1, IETF_MPA_V2 = 2 }; enum mpa_frame_key { MPA_KEY_REQUEST, MPA_KEY_REPLY }; enum send_rdma0 { SEND_RDMA_READ_ZERO = 1, SEND_RDMA_WRITE_ZERO = 2 }; enum i40iw_tcpip_pkt_type { I40IW_PKT_TYPE_UNKNOWN, I40IW_PKT_TYPE_SYN, I40IW_PKT_TYPE_SYNACK, I40IW_PKT_TYPE_ACK, I40IW_PKT_TYPE_FIN, I40IW_PKT_TYPE_RST }; /* CM context params */ struct i40iw_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; }; enum i40iw_cm_listener_state { I40IW_CM_LISTENER_PASSIVE_STATE = 1, I40IW_CM_LISTENER_ACTIVE_STATE = 2, I40IW_CM_LISTENER_EITHER_STATE = 3 }; struct i40iw_cm_listener { struct list_head list; struct i40iw_cm_core *cm_core; u8 loc_mac[ETH_ALEN]; u32 loc_addr[4]; u16 loc_port; struct iw_cm_id *cm_id; atomic_t ref_count; struct i40iw_device *iwdev; atomic_t pend_accepts_cnt; int backlog; enum i40iw_cm_listener_state listener_state; u32 reused_node; u8 user_pri; u8 tos; u16 vlan_id; bool qhash_set; bool ipv4; struct list_head child_listen_list; }; struct i40iw_kmem_info { void *addr; u32 size; }; /* per connection node and node state information */ struct i40iw_cm_node { u32 loc_addr[4], rem_addr[4]; u16 loc_port, rem_port; u16 vlan_id; enum i40iw_cm_node_state state; u8 loc_mac[ETH_ALEN]; u8 rem_mac[ETH_ALEN]; atomic_t ref_count; struct i40iw_qp *iwqp; struct i40iw_device *iwdev; struct i40iw_sc_dev *dev; struct i40iw_cm_tcp_context tcp_cntxt; struct i40iw_cm_core *cm_core; struct i40iw_cm_node *loopbackpartner; struct i40iw_timer_entry *send_entry; struct i40iw_timer_entry *close_entry; spinlock_t retrans_list_lock; /* cm transmit packet */ enum send_rdma0 send_rdma0_op; u16 ird_size; u16 ord_size; u16 mpav2_ird_ord; struct iw_cm_id *cm_id; struct list_head list; bool accelerated; struct i40iw_cm_listener *listener; int apbvt_set; int accept_pend; struct list_head timer_entry; struct list_head reset_entry; struct list_head teardown_entry; atomic_t passive_state; bool qhash_set; u8 user_pri; u8 tos; bool ipv4; bool snd_mark_en; u16 lsmm_size; enum mpa_frame_version mpa_frame_rev; struct i40iw_kmem_info pdata; union { struct ietf_mpa_v1 mpa_frame; struct ietf_mpa_v2 mpa_v2_frame; }; u8 pdata_buf[IETF_MAX_PRIV_DATA_LEN]; struct i40iw_kmem_info mpa_hdr; bool ack_rcvd; }; /* structure for client or CM to fill when making CM api calls. */ /* - only need to set relevant data, based on op. */ struct i40iw_cm_info { struct iw_cm_id *cm_id; u16 loc_port; u16 rem_port; u32 loc_addr[4]; u32 rem_addr[4]; u16 vlan_id; int backlog; u8 user_pri; u8 tos; bool ipv4; }; /* CM event codes */ enum i40iw_cm_event_type { I40IW_CM_EVENT_UNKNOWN, I40IW_CM_EVENT_ESTABLISHED, I40IW_CM_EVENT_MPA_REQ, I40IW_CM_EVENT_MPA_CONNECT, I40IW_CM_EVENT_MPA_ACCEPT, I40IW_CM_EVENT_MPA_REJECT, I40IW_CM_EVENT_MPA_ESTABLISHED, I40IW_CM_EVENT_CONNECTED, I40IW_CM_EVENT_RESET, I40IW_CM_EVENT_ABORTED }; /* event to post to CM event handler */ struct i40iw_cm_event { enum i40iw_cm_event_type type; struct i40iw_cm_info cm_info; struct work_struct event_work; struct i40iw_cm_node *cm_node; }; struct i40iw_cm_core { struct i40iw_device *iwdev; struct i40iw_sc_dev *dev; struct list_head listen_nodes; struct list_head accelerated_list; struct list_head non_accelerated_list; struct timer_list tcp_timer; struct workqueue_struct *event_wq; struct workqueue_struct *disconn_wq; spinlock_t ht_lock; /* manage hash table */ spinlock_t listen_list_lock; /* listen list */ spinlock_t apbvt_lock; /*manage apbvt entries*/ unsigned long ports_in_use[BITS_TO_LONGS(MAX_PORTS)]; u64 stats_nodes_created; u64 stats_nodes_destroyed; u64 stats_listen_created; u64 stats_listen_destroyed; u64 stats_listen_nodes_created; u64 stats_listen_nodes_destroyed; u64 stats_loopbacks; u64 stats_accepts; u64 stats_rejects; u64 stats_connect_errs; u64 stats_passive_errs; u64 stats_pkt_retrans; u64 stats_backlog_drops; }; int i40iw_schedule_cm_timer(struct i40iw_cm_node *cm_node, struct i40iw_puda_buf *sqbuf, enum i40iw_timer_type type, int send_retrans, int close_when_complete); int i40iw_accept(struct iw_cm_id *, struct iw_cm_conn_param *); int i40iw_reject(struct iw_cm_id *, const void *, u8); int i40iw_connect(struct iw_cm_id *, struct iw_cm_conn_param *); int i40iw_create_listen(struct iw_cm_id *, int); int i40iw_destroy_listen(struct iw_cm_id *); int i40iw_cm_start(struct i40iw_device *); int i40iw_cm_stop(struct i40iw_device *); int i40iw_arp_table(struct i40iw_device *iwdev, u32 *ip_addr, bool ipv4, u8 *mac_addr, u32 action); void i40iw_if_notify(struct i40iw_device *iwdev, struct net_device *netdev, u32 *ipaddr, bool ipv4, bool ifup); void i40iw_cm_teardown_connections(struct i40iw_device *iwdev, u32 *ipaddr, struct i40iw_cm_info *nfo, bool disconnect_all); bool i40iw_port_in_use(struct i40iw_cm_core *cm_core, u16 port); #endif /* I40IW_CM_H */