+++ /dev/null
-/*******************************************************************************
-*
-* 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[];
-};
-
-#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[];
-};
-
-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 */
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