| /******************************************************************************* |
| * |
| * 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 */ |
