[ewg] [PATCH 4/14] nes: connection manager structures and defines
ggrundstrom at neteffect.com
ggrundstrom at neteffect.com
Tue Aug 7 17:52:30 PDT 2007
NetEffect connection manager includes, structures and defines.
Signed-off-by: Glenn Grundstrom <ggrundstrom at neteffect.com>
---
diff -Nurp NULL ofa_kernel-1.2/drivers/infiniband/hw/nes/nes_cm.h
--- NULL 1969-12-31 18:00:00.000000000 -0600
+++ ofa_kernel-1.2/drivers/infiniband/hw/nes/nes_cm.h 2007-08-07 13:35:50.000000000 -0500
@@ -0,0 +1,419 @@
+/*
+ * Copyright (c) 2006 - 2007 NetEffect, Inc. 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
+
+/* 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
+
+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;
+ u16 priv_data_len;
+ u8 priv_data[0];
+};
+
+#define ietf_mpa_req_resp_frame ietf_mpa_frame
+
+struct nes_v4_quad {
+ u32 rsvd0;
+ u32 DstIpAdrIndex; /* Only most significant 5 bits are valid */
+ u32 SrcIpadr;
+ u32 TcpPorts; /* 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 MAX_NES_IFS 4
+
+#define SET_ACK 1
+#define SET_SYN 2
+#define SET_FIN 4
+#define SET_RST 8
+
+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;
+ u16 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;
+ struct net_device *netdev;
+};
+
+#define NES_DEFAULT_RETRYS 64
+#define NES_DEFAULT_RETRANS 4
+#define NES_RETRY_TIMEOUT (1000*HZ/1000)
+#define NES_SHORT_TIME (10)
+#define NES_LONG_TIME (2000*HZ/1000)
+
+#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_DEF_SEQ 0x159bf75f
+#define NES_CM_DEF_LOCAL_ID 0x3b47
+
+#define NES_CM_DEF_SEQ2 0x18ed5740
+#define NES_CM_DEF_LOCAL_ID2 0xb807
+
+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_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_CLOSED
+};
+
+/* 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;
+};
+
+struct nes_cm_listener {
+ struct list_head list;
+ u64 session_id;
+ struct nes_cm_core *core_p;
+ u8 loc_mac[ETH_ALEN];
+ nes_addr_t loc_addr;
+ u16 loc_port;
+ void *cm_id;
+ enum nes_cm_conn_type conn_type;
+ atomic_t ref_count;
+};
+
+/* per connection node and node state information */
+struct nes_cm_node {
+ u64 session_id;
+ u32 hashkey;
+
+ 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 *core_p;
+ struct sk_buff_head resend_list;
+ struct nes_cm_node *listener;
+ atomic_t ref_count;
+ struct net_device *netdev_p;
+
+ struct nes_cm_node *loopbackpartner ;
+ struct list_head retrans_list;
+ spinlock_t retrans_list_lock;
+ struct list_head recv_list;
+ spinlock_t recv_list_lock;
+
+ int send_write0;
+ union {
+ struct ietf_mpa_frame mpa_frame_p;
+ u8 mpa_frame_b[NES_CM_DEFAULT_MTU];
+ };
+ u16 mpa_frame_size;
+ void *cm_id;
+ struct list_head list;
+ int accelerated;
+ struct nes_cm_listener *listen_p;
+ enum nes_cm_conn_type conn_type;
+};
+
+/* 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;
+};
+
+/* 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_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 *node_p;
+};
+
+struct nes_cm_core {
+ enum nes_cm_node_state state;
+ atomic_t session_id;
+
+ 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;
+ struct sk_buff_head tx_free_list;
+ 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_p);
+ 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 *cm_core_p,
+ struct nes_cm_node *node_p);
+ struct nes_cm_listener * (*listen)(struct nes_cm_core *cm_core_p,
+ struct nes_vnic *nesvnic, struct nes_cm_info *nfo_p);
+ int (*stop_listener)(struct nes_cm_core *core_p,
+ struct nes_cm_listener *cm_core_p);
+ struct nes_cm_node * (*connect)(struct nes_cm_core *cm_core_p,
+ struct nes_vnic *nesvnic, struct ietf_mpa_frame *mpa_frame_p,
+ struct nes_cm_info *nfo_p);
+ int (*close)(struct nes_cm_core *cm_core_p, struct nes_cm_node *node_p);
+ int (*accept)(struct nes_cm_core *cm_core_p, struct ietf_mpa_frame *mpa_frame_p,
+ struct nes_cm_node *node_p);
+ int (*reject)(struct nes_cm_core *cm_core_p, struct ietf_mpa_frame *mpa_frame_p,
+ struct nes_cm_node *node_p);
+ int (*recv_pkt)(struct nes_cm_core *cm_core_p, struct nes_vnic *nesvnic,
+ struct sk_buff *skb_p);
+ int (*destroy_cm_core)(struct nes_cm_core *core_p);
+ int (*get)(struct nes_cm_core *cm_core_p);
+ int (*set)(struct nes_cm_core *core_p, u32 type, u32 value);
+};
+
+
+int send_mpa_request(struct nes_cm_node *);
+struct sk_buff *form_cm_frame(struct sk_buff *, struct nes_cm_node *,
+ void *, u32, void *, u32, u8);
+int schedule_nes_timer(struct nes_cm_node *node_p, struct sk_buff *skb_p,
+ enum nes_timer_type type, int retransmit);
+void nes_cm_timer_tick(unsigned long);
+int send_syn(struct nes_cm_node *, u32);
+int send_reset(struct nes_cm_node *);
+int send_ack(struct nes_cm_node *);
+int send_fin(struct nes_cm_node *, struct sk_buff *);
+struct sk_buff *get_free_pkt(struct nes_cm_node *);
+int del_hte_node(struct nes_cm_core *, struct nes_cm_node *);
+int process_packet(struct nes_cm_node *node_p, struct sk_buff *skb_p,
+ struct nes_cm_core *core_p);
+
+struct nes_cm_node * mini_cm_connect(struct nes_cm_core *core_p,
+ struct nes_vnic *nesvnic, struct ietf_mpa_frame *mpa_frame_p,
+ struct nes_cm_info *nfo_p);
+int mini_cm_accept(struct nes_cm_core *, struct ietf_mpa_frame *, struct nes_cm_node *);
+int mini_cm_reject(struct nes_cm_core *, struct ietf_mpa_frame *, struct nes_cm_node *);
+int mini_cm_close(struct nes_cm_core *, struct nes_cm_node *);
+int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *, struct sk_buff *);
+struct nes_cm_core *mini_cm_alloc_core(struct nes_cm_info *);
+int mini_cm_dealloc_core(struct nes_cm_core *);
+int mini_cm_get(struct nes_cm_core *);
+int mini_cm_set(struct nes_cm_core *, u32, u32);
+
+int nes_cm_disconn(struct nes_qp *nesqp);
+void nes_disconnect_worker(void *);
+int nes_cm_disconn_true(struct nes_qp *);
+int nes_disconnect(struct nes_qp *nesqp, int abrupt, u16 local_port);
+
+int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
+int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
+int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
+int nes_create_listen(struct iw_cm_id *cm_id, int backlog);
+int nes_destroy_listen(struct iw_cm_id *cm_id);
+
+int nes_cm_recv(struct sk_buff *, struct net_device *);
+int nes_cm_start(void);
+int nes_cm_stop(void);
+
+/* CM event handler functions */
+void cm_event_connected(struct nes_cm_event *);
+void cm_event_connect_error(struct nes_cm_event *);
+void cm_event_reset(struct nes_cm_event *);
+void cm_event_mpa_req(struct nes_cm_event *);
+int nes_cm_post_event(struct nes_cm_event *);
+
+#endif /* NES_CM_H */
+
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