2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
3 * Copyright (c) 2006 Open Grid Computing, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include <linux/inet.h>
37 #include <linux/wait.h>
38 #include <linux/spinlock.h>
39 #include <linux/kref.h>
41 #include <rdma/ib_verbs.h>
42 #include <rdma/iw_cm.h>
44 #include "cxgb3_offload.h"
45 #include "iwch_provider.h"
47 #define MPA_KEY_REQ "MPA ID Req Frame"
48 #define MPA_KEY_REP "MPA ID Rep Frame"
50 #define MPA_MAX_PRIVATE_DATA 256
51 #define MPA_REV 0 /* XXX - amso1100 uses rev 0 ! */
52 #define MPA_REJECT 0x20
54 #define MPA_MARKERS 0x80
55 #define MPA_FLAGS_MASK 0xE0
57 #define put_ep(ep) { \
58 PDBG("put_ep (via %s:%u) ep %p refcnt %d\n", __FUNCTION__, __LINE__, \
59 ep, atomic_read(&((ep)->kref.refcount))); \
60 kref_put(&((ep)->kref), __free_ep); \
63 #define get_ep(ep) { \
64 PDBG("get_ep (via %s:%u) ep %p, refcnt %d\n", __FUNCTION__, __LINE__, \
65 ep, atomic_read(&((ep)->kref.refcount))); \
66 kref_get(&((ep)->kref)); \
73 __be16 private_data_size;
77 struct terminate_message {
84 #define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28)
86 enum iwch_layers_types {
90 RDMAP_LOCAL_CATA = 0x00,
91 RDMAP_REMOTE_PROT = 0x01,
92 RDMAP_REMOTE_OP = 0x02,
93 DDP_LOCAL_CATA = 0x00,
94 DDP_TAGGED_ERR = 0x01,
95 DDP_UNTAGGED_ERR = 0x02,
99 enum iwch_rdma_ecodes {
100 RDMAP_INV_STAG = 0x00,
101 RDMAP_BASE_BOUNDS = 0x01,
102 RDMAP_ACC_VIOL = 0x02,
103 RDMAP_STAG_NOT_ASSOC = 0x03,
104 RDMAP_TO_WRAP = 0x04,
105 RDMAP_INV_VERS = 0x05,
106 RDMAP_INV_OPCODE = 0x06,
107 RDMAP_STREAM_CATA = 0x07,
108 RDMAP_GLOBAL_CATA = 0x08,
109 RDMAP_CANT_INV_STAG = 0x09,
110 RDMAP_UNSPECIFIED = 0xff
113 enum iwch_ddp_ecodes {
114 DDPT_INV_STAG = 0x00,
115 DDPT_BASE_BOUNDS = 0x01,
116 DDPT_STAG_NOT_ASSOC = 0x02,
118 DDPT_INV_VERS = 0x04,
120 DDPU_INV_MSN_NOBUF = 0x02,
121 DDPU_INV_MSN_RANGE = 0x03,
123 DDPU_MSG_TOOBIG = 0x05,
127 enum iwch_mpa_ecodes {
129 MPA_MARKER_ERR = 0x03
147 struct iwch_ep_common {
148 struct iw_cm_id *cm_id;
151 enum iwch_ep_state state;
154 struct sockaddr_in local_addr;
155 struct sockaddr_in remote_addr;
156 wait_queue_head_t waitq;
161 struct iwch_listen_ep {
162 struct iwch_ep_common com;
168 struct iwch_ep_common com;
169 struct iwch_ep *parent_ep;
170 struct timer_list timer;
174 struct l2t_entry *l2t;
175 struct dst_entry *dst;
176 struct sk_buff *mpa_skb;
177 struct iwch_mpa_attributes mpa_attr;
178 unsigned int mpa_pkt_len;
179 u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA];
187 static inline struct iwch_ep *to_ep(struct iw_cm_id *cm_id)
189 return cm_id->provider_data;
192 static inline struct iwch_listen_ep *to_listen_ep(struct iw_cm_id *cm_id)
194 return cm_id->provider_data;
197 static inline int compute_wscale(int win)
201 while (wscale < 14 && (65535<<wscale) < win)
208 int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
209 int iwch_create_listen(struct iw_cm_id *cm_id, int backlog);
210 int iwch_destroy_listen(struct iw_cm_id *cm_id);
211 int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
212 int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
213 int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, gfp_t gfp);
214 int iwch_quiesce_tid(struct iwch_ep *ep);
215 int iwch_resume_tid(struct iwch_ep *ep);
216 void __free_ep(struct kref *kref);
217 void iwch_rearp(struct iwch_ep *ep);
218 int iwch_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, struct l2t_entry *l2t);
220 int __init iwch_cm_init(void);
221 void __exit iwch_cm_term(void);
223 #endif /* _IWCH_CM_H_ */