Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2005 Intel Inc. All rights reserved. |
Hal Rosenstock | 618a3c0 | 2006-03-28 16:40:04 -0800 | [diff] [blame] | 3 | * Copyright (c) 2005-2006 Voltaire, Inc. All rights reserved. |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 4 | * |
| 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: |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or |
| 12 | * without modification, are permitted provided that the following |
| 13 | * conditions are met: |
| 14 | * |
| 15 | * - Redistributions of source code must retain the above |
| 16 | * copyright notice, this list of conditions and the following |
| 17 | * disclaimer. |
| 18 | * |
| 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. |
| 23 | * |
| 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 |
| 31 | * SOFTWARE. |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 32 | */ |
| 33 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 34 | #include <linux/slab.h> |
| 35 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 36 | #include "mad_priv.h" |
| 37 | #include "mad_rmpp.h" |
| 38 | |
| 39 | enum rmpp_state { |
| 40 | RMPP_STATE_ACTIVE, |
| 41 | RMPP_STATE_TIMEOUT, |
Roland Dreier | 0e442af | 2009-09-23 11:10:15 -0700 | [diff] [blame] | 42 | RMPP_STATE_COMPLETE, |
| 43 | RMPP_STATE_CANCELING |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 44 | }; |
| 45 | |
| 46 | struct mad_rmpp_recv { |
| 47 | struct ib_mad_agent_private *agent; |
| 48 | struct list_head list; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 49 | struct delayed_work timeout_work; |
| 50 | struct delayed_work cleanup_work; |
Sean Hefty | 1b52fa98 | 2006-05-12 14:57:52 -0700 | [diff] [blame] | 51 | struct completion comp; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 52 | enum rmpp_state state; |
| 53 | spinlock_t lock; |
| 54 | atomic_t refcount; |
| 55 | |
| 56 | struct ib_ah *ah; |
| 57 | struct ib_mad_recv_wc *rmpp_wc; |
| 58 | struct ib_mad_recv_buf *cur_seg_buf; |
| 59 | int last_ack; |
| 60 | int seg_num; |
| 61 | int newwin; |
Sean Hefty | 75ab134 | 2006-08-28 15:10:32 -0700 | [diff] [blame] | 62 | int repwin; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 63 | |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 64 | __be64 tid; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 65 | u32 src_qp; |
| 66 | u16 slid; |
| 67 | u8 mgmt_class; |
| 68 | u8 class_version; |
| 69 | u8 method; |
| 70 | }; |
| 71 | |
Sean Hefty | 1b52fa98 | 2006-05-12 14:57:52 -0700 | [diff] [blame] | 72 | static inline void deref_rmpp_recv(struct mad_rmpp_recv *rmpp_recv) |
| 73 | { |
| 74 | if (atomic_dec_and_test(&rmpp_recv->refcount)) |
| 75 | complete(&rmpp_recv->comp); |
| 76 | } |
| 77 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 78 | static void destroy_rmpp_recv(struct mad_rmpp_recv *rmpp_recv) |
| 79 | { |
Sean Hefty | 1b52fa98 | 2006-05-12 14:57:52 -0700 | [diff] [blame] | 80 | deref_rmpp_recv(rmpp_recv); |
| 81 | wait_for_completion(&rmpp_recv->comp); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 82 | ib_destroy_ah(rmpp_recv->ah); |
| 83 | kfree(rmpp_recv); |
| 84 | } |
| 85 | |
| 86 | void ib_cancel_rmpp_recvs(struct ib_mad_agent_private *agent) |
| 87 | { |
| 88 | struct mad_rmpp_recv *rmpp_recv, *temp_rmpp_recv; |
| 89 | unsigned long flags; |
| 90 | |
| 91 | spin_lock_irqsave(&agent->lock, flags); |
| 92 | list_for_each_entry(rmpp_recv, &agent->rmpp_list, list) { |
Roland Dreier | 0e442af | 2009-09-23 11:10:15 -0700 | [diff] [blame] | 93 | if (rmpp_recv->state != RMPP_STATE_COMPLETE) |
| 94 | ib_free_recv_mad(rmpp_recv->rmpp_wc); |
| 95 | rmpp_recv->state = RMPP_STATE_CANCELING; |
| 96 | } |
| 97 | spin_unlock_irqrestore(&agent->lock, flags); |
| 98 | |
| 99 | list_for_each_entry(rmpp_recv, &agent->rmpp_list, list) { |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 100 | cancel_delayed_work(&rmpp_recv->timeout_work); |
| 101 | cancel_delayed_work(&rmpp_recv->cleanup_work); |
| 102 | } |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 103 | |
| 104 | flush_workqueue(agent->qp_info->port_priv->wq); |
| 105 | |
| 106 | list_for_each_entry_safe(rmpp_recv, temp_rmpp_recv, |
| 107 | &agent->rmpp_list, list) { |
| 108 | list_del(&rmpp_recv->list); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 109 | destroy_rmpp_recv(rmpp_recv); |
| 110 | } |
| 111 | } |
| 112 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 113 | static void format_ack(struct ib_mad_send_buf *msg, |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 114 | struct ib_rmpp_mad *data, |
| 115 | struct mad_rmpp_recv *rmpp_recv) |
| 116 | { |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 117 | struct ib_rmpp_mad *ack = msg->mad; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 118 | unsigned long flags; |
| 119 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 120 | memcpy(ack, &data->mad_hdr, msg->hdr_len); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 121 | |
| 122 | ack->mad_hdr.method ^= IB_MGMT_METHOD_RESP; |
| 123 | ack->rmpp_hdr.rmpp_type = IB_MGMT_RMPP_TYPE_ACK; |
| 124 | ib_set_rmpp_flags(&ack->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE); |
| 125 | |
| 126 | spin_lock_irqsave(&rmpp_recv->lock, flags); |
| 127 | rmpp_recv->last_ack = rmpp_recv->seg_num; |
| 128 | ack->rmpp_hdr.seg_num = cpu_to_be32(rmpp_recv->seg_num); |
| 129 | ack->rmpp_hdr.paylen_newwin = cpu_to_be32(rmpp_recv->newwin); |
| 130 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); |
| 131 | } |
| 132 | |
| 133 | static void ack_recv(struct mad_rmpp_recv *rmpp_recv, |
| 134 | struct ib_mad_recv_wc *recv_wc) |
| 135 | { |
| 136 | struct ib_mad_send_buf *msg; |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 137 | int ret, hdr_len; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 138 | |
Hal Rosenstock | 618a3c0 | 2006-03-28 16:40:04 -0800 | [diff] [blame] | 139 | hdr_len = ib_get_mad_data_offset(recv_wc->recv_buf.mad->mad_hdr.mgmt_class); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 140 | msg = ib_create_send_mad(&rmpp_recv->agent->agent, recv_wc->wc->src_qp, |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 141 | recv_wc->wc->pkey_index, 1, hdr_len, |
| 142 | 0, GFP_KERNEL); |
Julien Brunel | cd55ef5 | 2008-08-07 14:11:56 -0700 | [diff] [blame] | 143 | if (IS_ERR(msg)) |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 144 | return; |
| 145 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 146 | format_ack(msg, (struct ib_rmpp_mad *) recv_wc->recv_buf.mad, rmpp_recv); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 147 | msg->ah = rmpp_recv->ah; |
| 148 | ret = ib_post_send_mad(msg, NULL); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 149 | if (ret) |
| 150 | ib_free_send_mad(msg); |
| 151 | } |
| 152 | |
Roland Dreier | 7cc656e | 2005-10-25 15:13:54 -0700 | [diff] [blame] | 153 | static struct ib_mad_send_buf *alloc_response_msg(struct ib_mad_agent *agent, |
| 154 | struct ib_mad_recv_wc *recv_wc) |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 155 | { |
Roland Dreier | 7cc656e | 2005-10-25 15:13:54 -0700 | [diff] [blame] | 156 | struct ib_mad_send_buf *msg; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 157 | struct ib_ah *ah; |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 158 | int hdr_len; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 159 | |
| 160 | ah = ib_create_ah_from_wc(agent->qp->pd, recv_wc->wc, |
| 161 | recv_wc->recv_buf.grh, agent->port_num); |
| 162 | if (IS_ERR(ah)) |
Roland Dreier | 7cc656e | 2005-10-25 15:13:54 -0700 | [diff] [blame] | 163 | return (void *) ah; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 164 | |
Hal Rosenstock | 618a3c0 | 2006-03-28 16:40:04 -0800 | [diff] [blame] | 165 | hdr_len = ib_get_mad_data_offset(recv_wc->recv_buf.mad->mad_hdr.mgmt_class); |
Roland Dreier | 7cc656e | 2005-10-25 15:13:54 -0700 | [diff] [blame] | 166 | msg = ib_create_send_mad(agent, recv_wc->wc->src_qp, |
| 167 | recv_wc->wc->pkey_index, 1, |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 168 | hdr_len, 0, GFP_KERNEL); |
Roland Dreier | 7cc656e | 2005-10-25 15:13:54 -0700 | [diff] [blame] | 169 | if (IS_ERR(msg)) |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 170 | ib_destroy_ah(ah); |
Sean Hefty | 38d5af9 | 2007-07-31 15:10:54 -0700 | [diff] [blame] | 171 | else { |
Roland Dreier | 7cc656e | 2005-10-25 15:13:54 -0700 | [diff] [blame] | 172 | msg->ah = ah; |
Sean Hefty | 38d5af9 | 2007-07-31 15:10:54 -0700 | [diff] [blame] | 173 | msg->context[0] = ah; |
| 174 | } |
Roland Dreier | 7cc656e | 2005-10-25 15:13:54 -0700 | [diff] [blame] | 175 | |
| 176 | return msg; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 177 | } |
| 178 | |
Sean Hefty | 75ab134 | 2006-08-28 15:10:32 -0700 | [diff] [blame] | 179 | static void ack_ds_ack(struct ib_mad_agent_private *agent, |
| 180 | struct ib_mad_recv_wc *recv_wc) |
| 181 | { |
| 182 | struct ib_mad_send_buf *msg; |
| 183 | struct ib_rmpp_mad *rmpp_mad; |
| 184 | int ret; |
| 185 | |
| 186 | msg = alloc_response_msg(&agent->agent, recv_wc); |
| 187 | if (IS_ERR(msg)) |
| 188 | return; |
| 189 | |
| 190 | rmpp_mad = msg->mad; |
| 191 | memcpy(rmpp_mad, recv_wc->recv_buf.mad, msg->hdr_len); |
| 192 | |
| 193 | rmpp_mad->mad_hdr.method ^= IB_MGMT_METHOD_RESP; |
| 194 | ib_set_rmpp_flags(&rmpp_mad->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE); |
| 195 | rmpp_mad->rmpp_hdr.seg_num = 0; |
| 196 | rmpp_mad->rmpp_hdr.paylen_newwin = cpu_to_be32(1); |
| 197 | |
| 198 | ret = ib_post_send_mad(msg, NULL); |
| 199 | if (ret) { |
| 200 | ib_destroy_ah(msg->ah); |
| 201 | ib_free_send_mad(msg); |
| 202 | } |
| 203 | } |
| 204 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 205 | void ib_rmpp_send_handler(struct ib_mad_send_wc *mad_send_wc) |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 206 | { |
Sean Hefty | 38d5af9 | 2007-07-31 15:10:54 -0700 | [diff] [blame] | 207 | if (mad_send_wc->send_buf->context[0] == mad_send_wc->send_buf->ah) |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 208 | ib_destroy_ah(mad_send_wc->send_buf->ah); |
| 209 | ib_free_send_mad(mad_send_wc->send_buf); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | static void nack_recv(struct ib_mad_agent_private *agent, |
| 213 | struct ib_mad_recv_wc *recv_wc, u8 rmpp_status) |
| 214 | { |
| 215 | struct ib_mad_send_buf *msg; |
| 216 | struct ib_rmpp_mad *rmpp_mad; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 217 | int ret; |
| 218 | |
Roland Dreier | 7cc656e | 2005-10-25 15:13:54 -0700 | [diff] [blame] | 219 | msg = alloc_response_msg(&agent->agent, recv_wc); |
| 220 | if (IS_ERR(msg)) |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 221 | return; |
| 222 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 223 | rmpp_mad = msg->mad; |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 224 | memcpy(rmpp_mad, recv_wc->recv_buf.mad, msg->hdr_len); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 225 | |
| 226 | rmpp_mad->mad_hdr.method ^= IB_MGMT_METHOD_RESP; |
| 227 | rmpp_mad->rmpp_hdr.rmpp_version = IB_MGMT_RMPP_VERSION; |
| 228 | rmpp_mad->rmpp_hdr.rmpp_type = IB_MGMT_RMPP_TYPE_ABORT; |
| 229 | ib_set_rmpp_flags(&rmpp_mad->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE); |
| 230 | rmpp_mad->rmpp_hdr.rmpp_status = rmpp_status; |
| 231 | rmpp_mad->rmpp_hdr.seg_num = 0; |
| 232 | rmpp_mad->rmpp_hdr.paylen_newwin = 0; |
| 233 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 234 | ret = ib_post_send_mad(msg, NULL); |
| 235 | if (ret) { |
| 236 | ib_destroy_ah(msg->ah); |
| 237 | ib_free_send_mad(msg); |
| 238 | } |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 239 | } |
| 240 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 241 | static void recv_timeout_handler(struct work_struct *work) |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 242 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 243 | struct mad_rmpp_recv *rmpp_recv = |
| 244 | container_of(work, struct mad_rmpp_recv, timeout_work.work); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 245 | struct ib_mad_recv_wc *rmpp_wc; |
| 246 | unsigned long flags; |
| 247 | |
| 248 | spin_lock_irqsave(&rmpp_recv->agent->lock, flags); |
| 249 | if (rmpp_recv->state != RMPP_STATE_ACTIVE) { |
| 250 | spin_unlock_irqrestore(&rmpp_recv->agent->lock, flags); |
| 251 | return; |
| 252 | } |
| 253 | rmpp_recv->state = RMPP_STATE_TIMEOUT; |
| 254 | list_del(&rmpp_recv->list); |
| 255 | spin_unlock_irqrestore(&rmpp_recv->agent->lock, flags); |
| 256 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 257 | rmpp_wc = rmpp_recv->rmpp_wc; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 258 | nack_recv(rmpp_recv->agent, rmpp_wc, IB_MGMT_RMPP_STATUS_T2L); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 259 | destroy_rmpp_recv(rmpp_recv); |
| 260 | ib_free_recv_mad(rmpp_wc); |
| 261 | } |
| 262 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 263 | static void recv_cleanup_handler(struct work_struct *work) |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 264 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 265 | struct mad_rmpp_recv *rmpp_recv = |
| 266 | container_of(work, struct mad_rmpp_recv, cleanup_work.work); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 267 | unsigned long flags; |
| 268 | |
| 269 | spin_lock_irqsave(&rmpp_recv->agent->lock, flags); |
Roland Dreier | 0e442af | 2009-09-23 11:10:15 -0700 | [diff] [blame] | 270 | if (rmpp_recv->state == RMPP_STATE_CANCELING) { |
| 271 | spin_unlock_irqrestore(&rmpp_recv->agent->lock, flags); |
| 272 | return; |
| 273 | } |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 274 | list_del(&rmpp_recv->list); |
| 275 | spin_unlock_irqrestore(&rmpp_recv->agent->lock, flags); |
| 276 | destroy_rmpp_recv(rmpp_recv); |
| 277 | } |
| 278 | |
| 279 | static struct mad_rmpp_recv * |
| 280 | create_rmpp_recv(struct ib_mad_agent_private *agent, |
| 281 | struct ib_mad_recv_wc *mad_recv_wc) |
| 282 | { |
| 283 | struct mad_rmpp_recv *rmpp_recv; |
| 284 | struct ib_mad_hdr *mad_hdr; |
| 285 | |
| 286 | rmpp_recv = kmalloc(sizeof *rmpp_recv, GFP_KERNEL); |
| 287 | if (!rmpp_recv) |
| 288 | return NULL; |
| 289 | |
| 290 | rmpp_recv->ah = ib_create_ah_from_wc(agent->agent.qp->pd, |
| 291 | mad_recv_wc->wc, |
| 292 | mad_recv_wc->recv_buf.grh, |
| 293 | agent->agent.port_num); |
| 294 | if (IS_ERR(rmpp_recv->ah)) |
| 295 | goto error; |
| 296 | |
| 297 | rmpp_recv->agent = agent; |
Sean Hefty | 1b52fa98 | 2006-05-12 14:57:52 -0700 | [diff] [blame] | 298 | init_completion(&rmpp_recv->comp); |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 299 | INIT_DELAYED_WORK(&rmpp_recv->timeout_work, recv_timeout_handler); |
| 300 | INIT_DELAYED_WORK(&rmpp_recv->cleanup_work, recv_cleanup_handler); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 301 | spin_lock_init(&rmpp_recv->lock); |
| 302 | rmpp_recv->state = RMPP_STATE_ACTIVE; |
| 303 | atomic_set(&rmpp_recv->refcount, 1); |
| 304 | |
| 305 | rmpp_recv->rmpp_wc = mad_recv_wc; |
| 306 | rmpp_recv->cur_seg_buf = &mad_recv_wc->recv_buf; |
| 307 | rmpp_recv->newwin = 1; |
| 308 | rmpp_recv->seg_num = 1; |
| 309 | rmpp_recv->last_ack = 0; |
Sean Hefty | 75ab134 | 2006-08-28 15:10:32 -0700 | [diff] [blame] | 310 | rmpp_recv->repwin = 1; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 311 | |
| 312 | mad_hdr = &mad_recv_wc->recv_buf.mad->mad_hdr; |
| 313 | rmpp_recv->tid = mad_hdr->tid; |
| 314 | rmpp_recv->src_qp = mad_recv_wc->wc->src_qp; |
| 315 | rmpp_recv->slid = mad_recv_wc->wc->slid; |
| 316 | rmpp_recv->mgmt_class = mad_hdr->mgmt_class; |
| 317 | rmpp_recv->class_version = mad_hdr->class_version; |
| 318 | rmpp_recv->method = mad_hdr->method; |
| 319 | return rmpp_recv; |
| 320 | |
| 321 | error: kfree(rmpp_recv); |
| 322 | return NULL; |
| 323 | } |
| 324 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 325 | static struct mad_rmpp_recv * |
| 326 | find_rmpp_recv(struct ib_mad_agent_private *agent, |
| 327 | struct ib_mad_recv_wc *mad_recv_wc) |
| 328 | { |
| 329 | struct mad_rmpp_recv *rmpp_recv; |
| 330 | struct ib_mad_hdr *mad_hdr = &mad_recv_wc->recv_buf.mad->mad_hdr; |
| 331 | |
| 332 | list_for_each_entry(rmpp_recv, &agent->rmpp_list, list) { |
| 333 | if (rmpp_recv->tid == mad_hdr->tid && |
| 334 | rmpp_recv->src_qp == mad_recv_wc->wc->src_qp && |
| 335 | rmpp_recv->slid == mad_recv_wc->wc->slid && |
| 336 | rmpp_recv->mgmt_class == mad_hdr->mgmt_class && |
| 337 | rmpp_recv->class_version == mad_hdr->class_version && |
| 338 | rmpp_recv->method == mad_hdr->method) |
| 339 | return rmpp_recv; |
| 340 | } |
| 341 | return NULL; |
| 342 | } |
| 343 | |
| 344 | static struct mad_rmpp_recv * |
| 345 | acquire_rmpp_recv(struct ib_mad_agent_private *agent, |
| 346 | struct ib_mad_recv_wc *mad_recv_wc) |
| 347 | { |
| 348 | struct mad_rmpp_recv *rmpp_recv; |
| 349 | unsigned long flags; |
| 350 | |
| 351 | spin_lock_irqsave(&agent->lock, flags); |
| 352 | rmpp_recv = find_rmpp_recv(agent, mad_recv_wc); |
| 353 | if (rmpp_recv) |
| 354 | atomic_inc(&rmpp_recv->refcount); |
| 355 | spin_unlock_irqrestore(&agent->lock, flags); |
| 356 | return rmpp_recv; |
| 357 | } |
| 358 | |
| 359 | static struct mad_rmpp_recv * |
| 360 | insert_rmpp_recv(struct ib_mad_agent_private *agent, |
| 361 | struct mad_rmpp_recv *rmpp_recv) |
| 362 | { |
| 363 | struct mad_rmpp_recv *cur_rmpp_recv; |
| 364 | |
| 365 | cur_rmpp_recv = find_rmpp_recv(agent, rmpp_recv->rmpp_wc); |
| 366 | if (!cur_rmpp_recv) |
| 367 | list_add_tail(&rmpp_recv->list, &agent->rmpp_list); |
| 368 | |
| 369 | return cur_rmpp_recv; |
| 370 | } |
| 371 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 372 | static inline int get_last_flag(struct ib_mad_recv_buf *seg) |
| 373 | { |
| 374 | struct ib_rmpp_mad *rmpp_mad; |
| 375 | |
| 376 | rmpp_mad = (struct ib_rmpp_mad *) seg->mad; |
| 377 | return ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & IB_MGMT_RMPP_FLAG_LAST; |
| 378 | } |
| 379 | |
| 380 | static inline int get_seg_num(struct ib_mad_recv_buf *seg) |
| 381 | { |
| 382 | struct ib_rmpp_mad *rmpp_mad; |
| 383 | |
| 384 | rmpp_mad = (struct ib_rmpp_mad *) seg->mad; |
| 385 | return be32_to_cpu(rmpp_mad->rmpp_hdr.seg_num); |
| 386 | } |
| 387 | |
| 388 | static inline struct ib_mad_recv_buf * get_next_seg(struct list_head *rmpp_list, |
| 389 | struct ib_mad_recv_buf *seg) |
| 390 | { |
| 391 | if (seg->list.next == rmpp_list) |
| 392 | return NULL; |
| 393 | |
| 394 | return container_of(seg->list.next, struct ib_mad_recv_buf, list); |
| 395 | } |
| 396 | |
| 397 | static inline int window_size(struct ib_mad_agent_private *agent) |
| 398 | { |
| 399 | return max(agent->qp_info->recv_queue.max_active >> 3, 1); |
| 400 | } |
| 401 | |
| 402 | static struct ib_mad_recv_buf * find_seg_location(struct list_head *rmpp_list, |
| 403 | int seg_num) |
| 404 | { |
Roland Dreier | 3cd9656 | 2006-09-22 15:22:46 -0700 | [diff] [blame] | 405 | struct ib_mad_recv_buf *seg_buf; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 406 | int cur_seg_num; |
| 407 | |
| 408 | list_for_each_entry_reverse(seg_buf, rmpp_list, list) { |
| 409 | cur_seg_num = get_seg_num(seg_buf); |
| 410 | if (seg_num > cur_seg_num) |
| 411 | return seg_buf; |
| 412 | if (seg_num == cur_seg_num) |
| 413 | break; |
| 414 | } |
| 415 | return NULL; |
| 416 | } |
| 417 | |
| 418 | static void update_seg_num(struct mad_rmpp_recv *rmpp_recv, |
| 419 | struct ib_mad_recv_buf *new_buf) |
| 420 | { |
| 421 | struct list_head *rmpp_list = &rmpp_recv->rmpp_wc->rmpp_list; |
| 422 | |
| 423 | while (new_buf && (get_seg_num(new_buf) == rmpp_recv->seg_num + 1)) { |
| 424 | rmpp_recv->cur_seg_buf = new_buf; |
| 425 | rmpp_recv->seg_num++; |
| 426 | new_buf = get_next_seg(rmpp_list, new_buf); |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | static inline int get_mad_len(struct mad_rmpp_recv *rmpp_recv) |
| 431 | { |
| 432 | struct ib_rmpp_mad *rmpp_mad; |
| 433 | int hdr_size, data_size, pad; |
| 434 | |
| 435 | rmpp_mad = (struct ib_rmpp_mad *)rmpp_recv->cur_seg_buf->mad; |
| 436 | |
Hal Rosenstock | 618a3c0 | 2006-03-28 16:40:04 -0800 | [diff] [blame] | 437 | hdr_size = ib_get_mad_data_offset(rmpp_mad->mad_hdr.mgmt_class); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 438 | data_size = sizeof(struct ib_rmpp_mad) - hdr_size; |
Hal Rosenstock | f2065e4 | 2005-09-21 12:33:09 -0700 | [diff] [blame] | 439 | pad = IB_MGMT_RMPP_DATA - be32_to_cpu(rmpp_mad->rmpp_hdr.paylen_newwin); |
| 440 | if (pad > IB_MGMT_RMPP_DATA || pad < 0) |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 441 | pad = 0; |
| 442 | |
| 443 | return hdr_size + rmpp_recv->seg_num * data_size - pad; |
| 444 | } |
| 445 | |
| 446 | static struct ib_mad_recv_wc * complete_rmpp(struct mad_rmpp_recv *rmpp_recv) |
| 447 | { |
| 448 | struct ib_mad_recv_wc *rmpp_wc; |
| 449 | |
| 450 | ack_recv(rmpp_recv, rmpp_recv->rmpp_wc); |
| 451 | if (rmpp_recv->seg_num > 1) |
| 452 | cancel_delayed_work(&rmpp_recv->timeout_work); |
| 453 | |
| 454 | rmpp_wc = rmpp_recv->rmpp_wc; |
| 455 | rmpp_wc->mad_len = get_mad_len(rmpp_recv); |
| 456 | /* 10 seconds until we can find the packet lifetime */ |
| 457 | queue_delayed_work(rmpp_recv->agent->qp_info->port_priv->wq, |
| 458 | &rmpp_recv->cleanup_work, msecs_to_jiffies(10000)); |
| 459 | return rmpp_wc; |
| 460 | } |
| 461 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 462 | static struct ib_mad_recv_wc * |
| 463 | continue_rmpp(struct ib_mad_agent_private *agent, |
| 464 | struct ib_mad_recv_wc *mad_recv_wc) |
| 465 | { |
| 466 | struct mad_rmpp_recv *rmpp_recv; |
| 467 | struct ib_mad_recv_buf *prev_buf; |
| 468 | struct ib_mad_recv_wc *done_wc; |
| 469 | int seg_num; |
| 470 | unsigned long flags; |
| 471 | |
| 472 | rmpp_recv = acquire_rmpp_recv(agent, mad_recv_wc); |
| 473 | if (!rmpp_recv) |
| 474 | goto drop1; |
| 475 | |
| 476 | seg_num = get_seg_num(&mad_recv_wc->recv_buf); |
| 477 | |
| 478 | spin_lock_irqsave(&rmpp_recv->lock, flags); |
| 479 | if ((rmpp_recv->state == RMPP_STATE_TIMEOUT) || |
| 480 | (seg_num > rmpp_recv->newwin)) |
| 481 | goto drop3; |
| 482 | |
| 483 | if ((seg_num <= rmpp_recv->last_ack) || |
| 484 | (rmpp_recv->state == RMPP_STATE_COMPLETE)) { |
| 485 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); |
| 486 | ack_recv(rmpp_recv, mad_recv_wc); |
| 487 | goto drop2; |
| 488 | } |
| 489 | |
| 490 | prev_buf = find_seg_location(&rmpp_recv->rmpp_wc->rmpp_list, seg_num); |
| 491 | if (!prev_buf) |
| 492 | goto drop3; |
| 493 | |
| 494 | done_wc = NULL; |
| 495 | list_add(&mad_recv_wc->recv_buf.list, &prev_buf->list); |
| 496 | if (rmpp_recv->cur_seg_buf == prev_buf) { |
| 497 | update_seg_num(rmpp_recv, &mad_recv_wc->recv_buf); |
| 498 | if (get_last_flag(rmpp_recv->cur_seg_buf)) { |
| 499 | rmpp_recv->state = RMPP_STATE_COMPLETE; |
| 500 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); |
| 501 | done_wc = complete_rmpp(rmpp_recv); |
| 502 | goto out; |
| 503 | } else if (rmpp_recv->seg_num == rmpp_recv->newwin) { |
| 504 | rmpp_recv->newwin += window_size(agent); |
| 505 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); |
| 506 | ack_recv(rmpp_recv, mad_recv_wc); |
| 507 | goto out; |
| 508 | } |
| 509 | } |
| 510 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); |
| 511 | out: |
| 512 | deref_rmpp_recv(rmpp_recv); |
| 513 | return done_wc; |
| 514 | |
| 515 | drop3: spin_unlock_irqrestore(&rmpp_recv->lock, flags); |
| 516 | drop2: deref_rmpp_recv(rmpp_recv); |
| 517 | drop1: ib_free_recv_mad(mad_recv_wc); |
| 518 | return NULL; |
| 519 | } |
| 520 | |
| 521 | static struct ib_mad_recv_wc * |
| 522 | start_rmpp(struct ib_mad_agent_private *agent, |
| 523 | struct ib_mad_recv_wc *mad_recv_wc) |
| 524 | { |
| 525 | struct mad_rmpp_recv *rmpp_recv; |
| 526 | unsigned long flags; |
| 527 | |
| 528 | rmpp_recv = create_rmpp_recv(agent, mad_recv_wc); |
| 529 | if (!rmpp_recv) { |
| 530 | ib_free_recv_mad(mad_recv_wc); |
| 531 | return NULL; |
| 532 | } |
| 533 | |
| 534 | spin_lock_irqsave(&agent->lock, flags); |
| 535 | if (insert_rmpp_recv(agent, rmpp_recv)) { |
| 536 | spin_unlock_irqrestore(&agent->lock, flags); |
| 537 | /* duplicate first MAD */ |
| 538 | destroy_rmpp_recv(rmpp_recv); |
| 539 | return continue_rmpp(agent, mad_recv_wc); |
| 540 | } |
| 541 | atomic_inc(&rmpp_recv->refcount); |
| 542 | |
| 543 | if (get_last_flag(&mad_recv_wc->recv_buf)) { |
| 544 | rmpp_recv->state = RMPP_STATE_COMPLETE; |
| 545 | spin_unlock_irqrestore(&agent->lock, flags); |
| 546 | complete_rmpp(rmpp_recv); |
| 547 | } else { |
| 548 | spin_unlock_irqrestore(&agent->lock, flags); |
| 549 | /* 40 seconds until we can find the packet lifetimes */ |
| 550 | queue_delayed_work(agent->qp_info->port_priv->wq, |
| 551 | &rmpp_recv->timeout_work, |
| 552 | msecs_to_jiffies(40000)); |
| 553 | rmpp_recv->newwin += window_size(agent); |
| 554 | ack_recv(rmpp_recv, mad_recv_wc); |
| 555 | mad_recv_wc = NULL; |
| 556 | } |
| 557 | deref_rmpp_recv(rmpp_recv); |
| 558 | return mad_recv_wc; |
| 559 | } |
| 560 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 561 | static int send_next_seg(struct ib_mad_send_wr_private *mad_send_wr) |
| 562 | { |
| 563 | struct ib_rmpp_mad *rmpp_mad; |
| 564 | int timeout; |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 565 | u32 paylen = 0; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 566 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 567 | rmpp_mad = mad_send_wr->send_buf.mad; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 568 | ib_set_rmpp_flags(&rmpp_mad->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE); |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 569 | rmpp_mad->rmpp_hdr.seg_num = cpu_to_be32(++mad_send_wr->seg_num); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 570 | |
| 571 | if (mad_send_wr->seg_num == 1) { |
| 572 | rmpp_mad->rmpp_hdr.rmpp_rtime_flags |= IB_MGMT_RMPP_FLAG_FIRST; |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 573 | paylen = mad_send_wr->send_buf.seg_count * IB_MGMT_RMPP_DATA - |
Sean Hefty | 972d512 | 2005-09-21 12:31:26 -0700 | [diff] [blame] | 574 | mad_send_wr->pad; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 575 | } |
| 576 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 577 | if (mad_send_wr->seg_num == mad_send_wr->send_buf.seg_count) { |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 578 | rmpp_mad->rmpp_hdr.rmpp_rtime_flags |= IB_MGMT_RMPP_FLAG_LAST; |
Sean Hefty | 972d512 | 2005-09-21 12:31:26 -0700 | [diff] [blame] | 579 | paylen = IB_MGMT_RMPP_DATA - mad_send_wr->pad; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 580 | } |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 581 | rmpp_mad->rmpp_hdr.paylen_newwin = cpu_to_be32(paylen); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 582 | |
| 583 | /* 2 seconds for an ACK until we can find the packet lifetime */ |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 584 | timeout = mad_send_wr->send_buf.timeout_ms; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 585 | if (!timeout || timeout > 2000) |
| 586 | mad_send_wr->timeout = msecs_to_jiffies(2000); |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 587 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 588 | return ib_send_mad(mad_send_wr); |
| 589 | } |
| 590 | |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 591 | static void abort_send(struct ib_mad_agent_private *agent, |
| 592 | struct ib_mad_recv_wc *mad_recv_wc, u8 rmpp_status) |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 593 | { |
| 594 | struct ib_mad_send_wr_private *mad_send_wr; |
| 595 | struct ib_mad_send_wc wc; |
| 596 | unsigned long flags; |
| 597 | |
| 598 | spin_lock_irqsave(&agent->lock, flags); |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 599 | mad_send_wr = ib_find_send_mad(agent, mad_recv_wc); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 600 | if (!mad_send_wr) |
| 601 | goto out; /* Unmatched send */ |
| 602 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 603 | if ((mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) || |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 604 | (!mad_send_wr->timeout) || (mad_send_wr->status != IB_WC_SUCCESS)) |
| 605 | goto out; /* Send is already done */ |
| 606 | |
| 607 | ib_mark_mad_done(mad_send_wr); |
| 608 | spin_unlock_irqrestore(&agent->lock, flags); |
| 609 | |
| 610 | wc.status = IB_WC_REM_ABORT_ERR; |
| 611 | wc.vendor_err = rmpp_status; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 612 | wc.send_buf = &mad_send_wr->send_buf; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 613 | ib_mad_complete_send_wr(mad_send_wr, &wc); |
| 614 | return; |
| 615 | out: |
| 616 | spin_unlock_irqrestore(&agent->lock, flags); |
| 617 | } |
| 618 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 619 | static inline void adjust_last_ack(struct ib_mad_send_wr_private *wr, |
| 620 | int seg_num) |
| 621 | { |
| 622 | struct list_head *list; |
| 623 | |
| 624 | wr->last_ack = seg_num; |
| 625 | list = &wr->last_ack_seg->list; |
| 626 | list_for_each_entry(wr->last_ack_seg, list, list) |
| 627 | if (wr->last_ack_seg->num == seg_num) |
| 628 | break; |
| 629 | } |
| 630 | |
Sean Hefty | 75ab134 | 2006-08-28 15:10:32 -0700 | [diff] [blame] | 631 | static void process_ds_ack(struct ib_mad_agent_private *agent, |
| 632 | struct ib_mad_recv_wc *mad_recv_wc, int newwin) |
| 633 | { |
| 634 | struct mad_rmpp_recv *rmpp_recv; |
| 635 | |
| 636 | rmpp_recv = find_rmpp_recv(agent, mad_recv_wc); |
| 637 | if (rmpp_recv && rmpp_recv->state == RMPP_STATE_COMPLETE) |
| 638 | rmpp_recv->repwin = newwin; |
| 639 | } |
| 640 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 641 | static void process_rmpp_ack(struct ib_mad_agent_private *agent, |
| 642 | struct ib_mad_recv_wc *mad_recv_wc) |
| 643 | { |
| 644 | struct ib_mad_send_wr_private *mad_send_wr; |
| 645 | struct ib_rmpp_mad *rmpp_mad; |
| 646 | unsigned long flags; |
| 647 | int seg_num, newwin, ret; |
| 648 | |
| 649 | rmpp_mad = (struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 650 | if (rmpp_mad->rmpp_hdr.rmpp_status) { |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 651 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 652 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 653 | return; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 654 | } |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 655 | |
| 656 | seg_num = be32_to_cpu(rmpp_mad->rmpp_hdr.seg_num); |
| 657 | newwin = be32_to_cpu(rmpp_mad->rmpp_hdr.paylen_newwin); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 658 | if (newwin < seg_num) { |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 659 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_W2S); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 660 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_W2S); |
| 661 | return; |
| 662 | } |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 663 | |
| 664 | spin_lock_irqsave(&agent->lock, flags); |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 665 | mad_send_wr = ib_find_send_mad(agent, mad_recv_wc); |
Sean Hefty | 75ab134 | 2006-08-28 15:10:32 -0700 | [diff] [blame] | 666 | if (!mad_send_wr) { |
| 667 | if (!seg_num) |
| 668 | process_ds_ack(agent, mad_recv_wc, newwin); |
| 669 | goto out; /* Unmatched or DS RMPP ACK */ |
| 670 | } |
| 671 | |
| 672 | if ((mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) && |
| 673 | (mad_send_wr->timeout)) { |
| 674 | spin_unlock_irqrestore(&agent->lock, flags); |
| 675 | ack_ds_ack(agent, mad_recv_wc); |
| 676 | return; /* Repeated ACK for DS RMPP transaction */ |
| 677 | } |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 678 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 679 | if ((mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) || |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 680 | (!mad_send_wr->timeout) || (mad_send_wr->status != IB_WC_SUCCESS)) |
| 681 | goto out; /* Send is already done */ |
| 682 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 683 | if (seg_num > mad_send_wr->send_buf.seg_count || |
| 684 | seg_num > mad_send_wr->newwin) { |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 685 | spin_unlock_irqrestore(&agent->lock, flags); |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 686 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_S2B); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 687 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_S2B); |
| 688 | return; |
| 689 | } |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 690 | |
| 691 | if (newwin < mad_send_wr->newwin || seg_num < mad_send_wr->last_ack) |
| 692 | goto out; /* Old ACK */ |
| 693 | |
| 694 | if (seg_num > mad_send_wr->last_ack) { |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 695 | adjust_last_ack(mad_send_wr, seg_num); |
Sean Hefty | 4fc8cd4 | 2007-11-27 00:11:04 -0800 | [diff] [blame] | 696 | mad_send_wr->retries_left = mad_send_wr->max_retries; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 697 | } |
| 698 | mad_send_wr->newwin = newwin; |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 699 | if (mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) { |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 700 | /* If no response is expected, the ACK completes the send */ |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 701 | if (!mad_send_wr->send_buf.timeout_ms) { |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 702 | struct ib_mad_send_wc wc; |
| 703 | |
| 704 | ib_mark_mad_done(mad_send_wr); |
| 705 | spin_unlock_irqrestore(&agent->lock, flags); |
| 706 | |
| 707 | wc.status = IB_WC_SUCCESS; |
| 708 | wc.vendor_err = 0; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 709 | wc.send_buf = &mad_send_wr->send_buf; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 710 | ib_mad_complete_send_wr(mad_send_wr, &wc); |
| 711 | return; |
| 712 | } |
| 713 | if (mad_send_wr->refcount == 1) |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 714 | ib_reset_mad_timeout(mad_send_wr, |
| 715 | mad_send_wr->send_buf.timeout_ms); |
Sean Hefty | 75ab134 | 2006-08-28 15:10:32 -0700 | [diff] [blame] | 716 | spin_unlock_irqrestore(&agent->lock, flags); |
| 717 | ack_ds_ack(agent, mad_recv_wc); |
| 718 | return; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 719 | } else if (mad_send_wr->refcount == 1 && |
| 720 | mad_send_wr->seg_num < mad_send_wr->newwin && |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 721 | mad_send_wr->seg_num < mad_send_wr->send_buf.seg_count) { |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 722 | /* Send failure will just result in a timeout/retry */ |
| 723 | ret = send_next_seg(mad_send_wr); |
| 724 | if (ret) |
| 725 | goto out; |
| 726 | |
| 727 | mad_send_wr->refcount++; |
Akinobu Mita | 179e091 | 2006-06-26 00:24:41 -0700 | [diff] [blame] | 728 | list_move_tail(&mad_send_wr->agent_list, |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 729 | &mad_send_wr->mad_agent_priv->send_list); |
| 730 | } |
| 731 | out: |
| 732 | spin_unlock_irqrestore(&agent->lock, flags); |
| 733 | } |
| 734 | |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 735 | static struct ib_mad_recv_wc * |
| 736 | process_rmpp_data(struct ib_mad_agent_private *agent, |
| 737 | struct ib_mad_recv_wc *mad_recv_wc) |
| 738 | { |
| 739 | struct ib_rmpp_hdr *rmpp_hdr; |
| 740 | u8 rmpp_status; |
| 741 | |
| 742 | rmpp_hdr = &((struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad)->rmpp_hdr; |
| 743 | |
| 744 | if (rmpp_hdr->rmpp_status) { |
| 745 | rmpp_status = IB_MGMT_RMPP_STATUS_BAD_STATUS; |
| 746 | goto bad; |
| 747 | } |
| 748 | |
Harvey Harrison | 9c3da09 | 2009-01-17 17:11:57 -0800 | [diff] [blame] | 749 | if (rmpp_hdr->seg_num == cpu_to_be32(1)) { |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 750 | if (!(ib_get_rmpp_flags(rmpp_hdr) & IB_MGMT_RMPP_FLAG_FIRST)) { |
| 751 | rmpp_status = IB_MGMT_RMPP_STATUS_BAD_SEG; |
| 752 | goto bad; |
| 753 | } |
| 754 | return start_rmpp(agent, mad_recv_wc); |
| 755 | } else { |
| 756 | if (ib_get_rmpp_flags(rmpp_hdr) & IB_MGMT_RMPP_FLAG_FIRST) { |
| 757 | rmpp_status = IB_MGMT_RMPP_STATUS_BAD_SEG; |
| 758 | goto bad; |
| 759 | } |
| 760 | return continue_rmpp(agent, mad_recv_wc); |
| 761 | } |
| 762 | bad: |
| 763 | nack_recv(agent, mad_recv_wc, rmpp_status); |
| 764 | ib_free_recv_mad(mad_recv_wc); |
| 765 | return NULL; |
| 766 | } |
| 767 | |
| 768 | static void process_rmpp_stop(struct ib_mad_agent_private *agent, |
| 769 | struct ib_mad_recv_wc *mad_recv_wc) |
| 770 | { |
| 771 | struct ib_rmpp_mad *rmpp_mad; |
| 772 | |
| 773 | rmpp_mad = (struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad; |
| 774 | |
| 775 | if (rmpp_mad->rmpp_hdr.rmpp_status != IB_MGMT_RMPP_STATUS_RESX) { |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 776 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 777 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
| 778 | } else |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 779 | abort_send(agent, mad_recv_wc, rmpp_mad->rmpp_hdr.rmpp_status); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 780 | } |
| 781 | |
| 782 | static void process_rmpp_abort(struct ib_mad_agent_private *agent, |
| 783 | struct ib_mad_recv_wc *mad_recv_wc) |
| 784 | { |
| 785 | struct ib_rmpp_mad *rmpp_mad; |
| 786 | |
| 787 | rmpp_mad = (struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad; |
| 788 | |
| 789 | if (rmpp_mad->rmpp_hdr.rmpp_status < IB_MGMT_RMPP_STATUS_ABORT_MIN || |
| 790 | rmpp_mad->rmpp_hdr.rmpp_status > IB_MGMT_RMPP_STATUS_ABORT_MAX) { |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 791 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 792 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
| 793 | } else |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 794 | abort_send(agent, mad_recv_wc, rmpp_mad->rmpp_hdr.rmpp_status); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 795 | } |
| 796 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 797 | struct ib_mad_recv_wc * |
| 798 | ib_process_rmpp_recv_wc(struct ib_mad_agent_private *agent, |
| 799 | struct ib_mad_recv_wc *mad_recv_wc) |
| 800 | { |
| 801 | struct ib_rmpp_mad *rmpp_mad; |
| 802 | |
| 803 | rmpp_mad = (struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad; |
| 804 | if (!(rmpp_mad->rmpp_hdr.rmpp_rtime_flags & IB_MGMT_RMPP_FLAG_ACTIVE)) |
| 805 | return mad_recv_wc; |
| 806 | |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 807 | if (rmpp_mad->rmpp_hdr.rmpp_version != IB_MGMT_RMPP_VERSION) { |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 808 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_UNV); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 809 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_UNV); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 810 | goto out; |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 811 | } |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 812 | |
| 813 | switch (rmpp_mad->rmpp_hdr.rmpp_type) { |
| 814 | case IB_MGMT_RMPP_TYPE_DATA: |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 815 | return process_rmpp_data(agent, mad_recv_wc); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 816 | case IB_MGMT_RMPP_TYPE_ACK: |
| 817 | process_rmpp_ack(agent, mad_recv_wc); |
| 818 | break; |
| 819 | case IB_MGMT_RMPP_TYPE_STOP: |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 820 | process_rmpp_stop(agent, mad_recv_wc); |
| 821 | break; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 822 | case IB_MGMT_RMPP_TYPE_ABORT: |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 823 | process_rmpp_abort(agent, mad_recv_wc); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 824 | break; |
| 825 | default: |
Jack Morgenstein | fa9656b | 2006-03-28 16:39:07 -0800 | [diff] [blame] | 826 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BADT); |
Sean Hefty | fe9e08e | 2005-08-19 13:50:33 -0700 | [diff] [blame] | 827 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BADT); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 828 | break; |
| 829 | } |
| 830 | out: |
| 831 | ib_free_recv_mad(mad_recv_wc); |
| 832 | return NULL; |
| 833 | } |
| 834 | |
Sean Hefty | 75ab134 | 2006-08-28 15:10:32 -0700 | [diff] [blame] | 835 | static int init_newwin(struct ib_mad_send_wr_private *mad_send_wr) |
| 836 | { |
| 837 | struct ib_mad_agent_private *agent = mad_send_wr->mad_agent_priv; |
| 838 | struct ib_mad_hdr *mad_hdr = mad_send_wr->send_buf.mad; |
| 839 | struct mad_rmpp_recv *rmpp_recv; |
| 840 | struct ib_ah_attr ah_attr; |
| 841 | unsigned long flags; |
| 842 | int newwin = 1; |
| 843 | |
| 844 | if (!(mad_hdr->method & IB_MGMT_METHOD_RESP)) |
| 845 | goto out; |
| 846 | |
| 847 | spin_lock_irqsave(&agent->lock, flags); |
| 848 | list_for_each_entry(rmpp_recv, &agent->rmpp_list, list) { |
| 849 | if (rmpp_recv->tid != mad_hdr->tid || |
| 850 | rmpp_recv->mgmt_class != mad_hdr->mgmt_class || |
| 851 | rmpp_recv->class_version != mad_hdr->class_version || |
| 852 | (rmpp_recv->method & IB_MGMT_METHOD_RESP)) |
| 853 | continue; |
| 854 | |
| 855 | if (ib_query_ah(mad_send_wr->send_buf.ah, &ah_attr)) |
| 856 | continue; |
| 857 | |
| 858 | if (rmpp_recv->slid == ah_attr.dlid) { |
| 859 | newwin = rmpp_recv->repwin; |
| 860 | break; |
| 861 | } |
| 862 | } |
| 863 | spin_unlock_irqrestore(&agent->lock, flags); |
| 864 | out: |
| 865 | return newwin; |
| 866 | } |
| 867 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 868 | int ib_send_rmpp_mad(struct ib_mad_send_wr_private *mad_send_wr) |
| 869 | { |
| 870 | struct ib_rmpp_mad *rmpp_mad; |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 871 | int ret; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 872 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 873 | rmpp_mad = mad_send_wr->send_buf.mad; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 874 | if (!(ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & |
| 875 | IB_MGMT_RMPP_FLAG_ACTIVE)) |
| 876 | return IB_RMPP_RESULT_UNHANDLED; |
| 877 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 878 | if (rmpp_mad->rmpp_hdr.rmpp_type != IB_MGMT_RMPP_TYPE_DATA) { |
| 879 | mad_send_wr->seg_num = 1; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 880 | return IB_RMPP_RESULT_INTERNAL; |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 881 | } |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 882 | |
Sean Hefty | 75ab134 | 2006-08-28 15:10:32 -0700 | [diff] [blame] | 883 | mad_send_wr->newwin = init_newwin(mad_send_wr); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 884 | |
| 885 | /* We need to wait for the final ACK even if there isn't a response */ |
| 886 | mad_send_wr->refcount += (mad_send_wr->timeout == 0); |
| 887 | ret = send_next_seg(mad_send_wr); |
| 888 | if (!ret) |
| 889 | return IB_RMPP_RESULT_CONSUMED; |
| 890 | return ret; |
| 891 | } |
| 892 | |
| 893 | int ib_process_rmpp_send_wc(struct ib_mad_send_wr_private *mad_send_wr, |
| 894 | struct ib_mad_send_wc *mad_send_wc) |
| 895 | { |
| 896 | struct ib_rmpp_mad *rmpp_mad; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 897 | int ret; |
| 898 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 899 | rmpp_mad = mad_send_wr->send_buf.mad; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 900 | if (!(ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & |
| 901 | IB_MGMT_RMPP_FLAG_ACTIVE)) |
| 902 | return IB_RMPP_RESULT_UNHANDLED; /* RMPP not active */ |
| 903 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 904 | if (rmpp_mad->rmpp_hdr.rmpp_type != IB_MGMT_RMPP_TYPE_DATA) |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 905 | return IB_RMPP_RESULT_INTERNAL; /* ACK, STOP, or ABORT */ |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 906 | |
| 907 | if (mad_send_wc->status != IB_WC_SUCCESS || |
| 908 | mad_send_wr->status != IB_WC_SUCCESS) |
| 909 | return IB_RMPP_RESULT_PROCESSED; /* Canceled or send error */ |
| 910 | |
| 911 | if (!mad_send_wr->timeout) |
| 912 | return IB_RMPP_RESULT_PROCESSED; /* Response received */ |
| 913 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 914 | if (mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) { |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 915 | mad_send_wr->timeout = |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 916 | msecs_to_jiffies(mad_send_wr->send_buf.timeout_ms); |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 917 | return IB_RMPP_RESULT_PROCESSED; /* Send done */ |
| 918 | } |
| 919 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 920 | if (mad_send_wr->seg_num == mad_send_wr->newwin || |
| 921 | mad_send_wr->seg_num == mad_send_wr->send_buf.seg_count) |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 922 | return IB_RMPP_RESULT_PROCESSED; /* Wait for ACK */ |
| 923 | |
| 924 | ret = send_next_seg(mad_send_wr); |
| 925 | if (ret) { |
| 926 | mad_send_wc->status = IB_WC_GENERAL_ERR; |
| 927 | return IB_RMPP_RESULT_PROCESSED; |
| 928 | } |
| 929 | return IB_RMPP_RESULT_CONSUMED; |
| 930 | } |
| 931 | |
| 932 | int ib_retry_rmpp(struct ib_mad_send_wr_private *mad_send_wr) |
| 933 | { |
| 934 | struct ib_rmpp_mad *rmpp_mad; |
| 935 | int ret; |
| 936 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 937 | rmpp_mad = mad_send_wr->send_buf.mad; |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 938 | if (!(ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & |
| 939 | IB_MGMT_RMPP_FLAG_ACTIVE)) |
| 940 | return IB_RMPP_RESULT_UNHANDLED; /* RMPP not active */ |
| 941 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 942 | if (mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 943 | return IB_RMPP_RESULT_PROCESSED; |
| 944 | |
Jack Morgenstein | f36e179 | 2006-03-03 21:54:13 -0800 | [diff] [blame] | 945 | mad_send_wr->seg_num = mad_send_wr->last_ack; |
| 946 | mad_send_wr->cur_seg = mad_send_wr->last_ack_seg; |
| 947 | |
Hal Rosenstock | fa619a7 | 2005-07-27 11:45:37 -0700 | [diff] [blame] | 948 | ret = send_next_seg(mad_send_wr); |
| 949 | if (ret) |
| 950 | return IB_RMPP_RESULT_PROCESSED; |
| 951 | |
| 952 | return IB_RMPP_RESULT_CONSUMED; |
| 953 | } |