diff options
author | Faisal Latif <faisal.latif@intel.com> | 2016-01-20 13:40:04 -0600 |
---|---|---|
committer | Doug Ledford <dledford@redhat.com> | 2016-02-29 17:10:53 -0500 |
commit | f27b4746f378e033cd2f43c8116bd7cf39fc8575 (patch) | |
tree | a119b82f5df1d650f47b1053800240af3add0a74 /drivers/infiniband/hw/i40iw/i40iw_cm.h | |
parent | 8e06af711bf2573244335c6d674b4fd520444da4 (diff) |
i40iw: add connection management code
i40iw_cm.c i40iw_cm.h are used for connection management.
changes since v2:
Implemented interface changes as reg_phys_mr() is
not part of inifiniband interface Done as
Christoph Hellwig <hch@infradead.org> did for nes.
Changes since v1:
improved casts
moved kmap() from i40iw_verbs.c to make them short
lived.
Acked-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/i40iw/i40iw_cm.h')
-rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_cm.h | 456 |
1 files changed, 456 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.h b/drivers/infiniband/hw/i40iw/i40iw_cm.h new file mode 100644 index 000000000000..5f8ceb4a8e84 --- /dev/null +++ b/drivers/infiniband/hw/i40iw/i40iw_cm.h @@ -0,0 +1,456 @@ +/******************************************************************************* +* +* Copyright (c) 2015 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 + +#define MPA_ZERO_PAD_LEN 4 + +/* 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 + +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; + + struct timeval sent_ts; +}; + +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; + u32 map_loc_addr[4]; + u16 map_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; + 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; + u32 map_loc_addr[4], map_rem_addr[4]; + u16 map_loc_port, map_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; + int accelerated; + struct i40iw_cm_listener *listener; + int apbvt_set; + int accept_pend; + struct list_head timer_entry; + struct list_head reset_entry; + atomic_t passive_state; + bool qhash_set; + u8 user_pri; + 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; +}; + +/* 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 map_loc_port; + u16 map_rem_port; + u32 map_loc_addr[4]; + u32 map_rem_addr[4]; + u16 vlan_id; + int backlog; + u16 user_pri; + 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 connected_nodes; + + 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 */ + + 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); + +#endif /* I40IW_CM_H */ |