Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. |
Roland Dreier | 2a1d9b7 | 2005-08-10 23:03:10 -0700 | [diff] [blame] | 3 | * Copyright (c) 2005 Mellanox Technologies. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -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. |
| 32 | * |
| 33 | * $Id: ipoib_verbs.c 1349 2004-12-16 21:09:43Z roland $ |
| 34 | */ |
| 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include "ipoib.h" |
| 37 | |
| 38 | int ipoib_mcast_attach(struct net_device *dev, u16 mlid, union ib_gid *mgid) |
| 39 | { |
| 40 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 41 | struct ib_qp_attr *qp_attr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | int ret; |
| 43 | u16 pkey_index; |
| 44 | |
| 45 | ret = -ENOMEM; |
| 46 | qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL); |
| 47 | if (!qp_attr) |
| 48 | goto out; |
| 49 | |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame^] | 50 | if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
| 52 | ret = -ENXIO; |
| 53 | goto out; |
| 54 | } |
| 55 | set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
| 56 | |
| 57 | /* set correct QKey for QP */ |
| 58 | qp_attr->qkey = priv->qkey; |
Roland Dreier | 3bc12e7 | 2005-10-30 13:20:09 -0800 | [diff] [blame] | 59 | ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | if (ret) { |
| 61 | ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret); |
| 62 | goto out; |
| 63 | } |
| 64 | |
| 65 | /* attach QP to multicast group */ |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 66 | mutex_lock(&priv->mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | ret = ib_attach_mcast(priv->qp, mgid, mlid); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 68 | mutex_unlock(&priv->mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | if (ret) |
| 70 | ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret); |
| 71 | |
| 72 | out: |
| 73 | kfree(qp_attr); |
| 74 | return ret; |
| 75 | } |
| 76 | |
| 77 | int ipoib_mcast_detach(struct net_device *dev, u16 mlid, union ib_gid *mgid) |
| 78 | { |
| 79 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 80 | int ret; |
| 81 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 82 | mutex_lock(&priv->mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | ret = ib_detach_mcast(priv->qp, mgid, mlid); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 84 | mutex_unlock(&priv->mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | if (ret) |
| 86 | ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret); |
| 87 | |
| 88 | return ret; |
| 89 | } |
| 90 | |
Roland Dreier | 5b6810e | 2005-10-11 11:08:24 -0700 | [diff] [blame] | 91 | int ipoib_init_qp(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | { |
| 93 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 94 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | struct ib_qp_attr qp_attr; |
| 96 | int attr_mask; |
| 97 | |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame^] | 98 | if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) |
| 99 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
| 101 | qp_attr.qp_state = IB_QPS_INIT; |
| 102 | qp_attr.qkey = 0; |
| 103 | qp_attr.port_num = priv->port; |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame^] | 104 | qp_attr.pkey_index = priv->pkey_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | attr_mask = |
| 106 | IB_QP_QKEY | |
| 107 | IB_QP_PORT | |
| 108 | IB_QP_PKEY_INDEX | |
| 109 | IB_QP_STATE; |
| 110 | ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); |
| 111 | if (ret) { |
| 112 | ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret); |
| 113 | goto out_fail; |
| 114 | } |
| 115 | |
| 116 | qp_attr.qp_state = IB_QPS_RTR; |
| 117 | /* Can't set this in a INIT->RTR transition */ |
| 118 | attr_mask &= ~IB_QP_PORT; |
| 119 | ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); |
| 120 | if (ret) { |
| 121 | ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret); |
| 122 | goto out_fail; |
| 123 | } |
| 124 | |
| 125 | qp_attr.qp_state = IB_QPS_RTS; |
| 126 | qp_attr.sq_psn = 0; |
| 127 | attr_mask |= IB_QP_SQ_PSN; |
| 128 | attr_mask &= ~IB_QP_PKEY_INDEX; |
| 129 | ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); |
| 130 | if (ret) { |
| 131 | ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret); |
| 132 | goto out_fail; |
| 133 | } |
| 134 | |
| 135 | return 0; |
| 136 | |
| 137 | out_fail: |
Roland Dreier | 5b6810e | 2005-10-11 11:08:24 -0700 | [diff] [blame] | 138 | qp_attr.qp_state = IB_QPS_RESET; |
| 139 | if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) |
| 140 | ipoib_warn(priv, "Failed to modify QP to RESET state\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
Roland Dreier | 5b6810e | 2005-10-11 11:08:24 -0700 | [diff] [blame] | 142 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca) |
| 146 | { |
| 147 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 148 | struct ib_qp_init_attr init_attr = { |
| 149 | .cap = { |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 150 | .max_send_wr = ipoib_sendq_size, |
| 151 | .max_recv_wr = ipoib_recvq_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | .max_send_sge = 1, |
| 153 | .max_recv_sge = 1 |
| 154 | }, |
| 155 | .sq_sig_type = IB_SIGNAL_ALL_WR, |
| 156 | .qp_type = IB_QPT_UD |
| 157 | }; |
| 158 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 159 | int ret, size; |
| 160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | priv->pd = ib_alloc_pd(priv->ca); |
| 162 | if (IS_ERR(priv->pd)) { |
| 163 | printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name); |
| 164 | return -ENODEV; |
| 165 | } |
| 166 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 167 | priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE); |
| 168 | if (IS_ERR(priv->mr)) { |
| 169 | printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name); |
| 170 | goto out_free_pd; |
| 171 | } |
| 172 | |
| 173 | size = ipoib_sendq_size + ipoib_recvq_size + 1; |
| 174 | ret = ipoib_cm_dev_init(dev); |
| 175 | if (!ret) |
| 176 | size += ipoib_recvq_size; |
| 177 | |
Michael S. Tsirkin | f4fd0b2 | 2007-05-03 13:48:47 +0300 | [diff] [blame] | 178 | priv->cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | if (IS_ERR(priv->cq)) { |
| 180 | printk(KERN_WARNING "%s: failed to create CQ\n", ca->name); |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 181 | goto out_free_mr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | if (ib_req_notify_cq(priv->cq, IB_CQ_NEXT_COMP)) |
| 185 | goto out_free_cq; |
| 186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | init_attr.send_cq = priv->cq; |
| 188 | init_attr.recv_cq = priv->cq, |
| 189 | |
| 190 | priv->qp = ib_create_qp(priv->pd, &init_attr); |
| 191 | if (IS_ERR(priv->qp)) { |
| 192 | printk(KERN_WARNING "%s: failed to create QP\n", ca->name); |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 193 | goto out_free_cq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | priv->dev->dev_addr[1] = (priv->qp->qp_num >> 16) & 0xff; |
| 197 | priv->dev->dev_addr[2] = (priv->qp->qp_num >> 8) & 0xff; |
| 198 | priv->dev->dev_addr[3] = (priv->qp->qp_num ) & 0xff; |
| 199 | |
| 200 | priv->tx_sge.lkey = priv->mr->lkey; |
| 201 | |
| 202 | priv->tx_wr.opcode = IB_WR_SEND; |
| 203 | priv->tx_wr.sg_list = &priv->tx_sge; |
| 204 | priv->tx_wr.num_sge = 1; |
| 205 | priv->tx_wr.send_flags = IB_SEND_SIGNALED; |
| 206 | |
| 207 | return 0; |
| 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | out_free_cq: |
| 210 | ib_destroy_cq(priv->cq); |
| 211 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 212 | out_free_mr: |
| 213 | ib_dereg_mr(priv->mr); |
| 214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | out_free_pd: |
| 216 | ib_dealloc_pd(priv->pd); |
| 217 | return -ENODEV; |
| 218 | } |
| 219 | |
| 220 | void ipoib_transport_dev_cleanup(struct net_device *dev) |
| 221 | { |
| 222 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 223 | |
| 224 | if (priv->qp) { |
| 225 | if (ib_destroy_qp(priv->qp)) |
| 226 | ipoib_warn(priv, "ib_qp_destroy failed\n"); |
| 227 | |
| 228 | priv->qp = NULL; |
| 229 | clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
| 230 | } |
| 231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | if (ib_destroy_cq(priv->cq)) |
| 233 | ipoib_warn(priv, "ib_cq_destroy failed\n"); |
| 234 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 235 | ipoib_cm_dev_cleanup(dev); |
| 236 | |
| 237 | if (ib_dereg_mr(priv->mr)) |
| 238 | ipoib_warn(priv, "ib_dereg_mr failed\n"); |
| 239 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | if (ib_dealloc_pd(priv->pd)) |
| 241 | ipoib_warn(priv, "ib_dealloc_pd failed\n"); |
| 242 | } |
| 243 | |
| 244 | void ipoib_event(struct ib_event_handler *handler, |
| 245 | struct ib_event *record) |
| 246 | { |
| 247 | struct ipoib_dev_priv *priv = |
| 248 | container_of(handler, struct ipoib_dev_priv, event_handler); |
| 249 | |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame^] | 250 | if (record->element.port_num != priv->port) |
| 251 | return; |
| 252 | |
| 253 | if (record->event == IB_EVENT_PORT_ERR || |
| 254 | record->event == IB_EVENT_PORT_ACTIVE || |
| 255 | record->event == IB_EVENT_LID_CHANGE || |
| 256 | record->event == IB_EVENT_SM_CHANGE || |
| 257 | record->event == IB_EVENT_CLIENT_REREGISTER) { |
Leonid Arsh | 4e37b95 | 2006-03-22 19:54:24 +0200 | [diff] [blame] | 258 | ipoib_dbg(priv, "Port state change event\n"); |
Jack Morgenstein | 0b3ea08 | 2006-03-20 10:08:24 -0800 | [diff] [blame] | 259 | queue_work(ipoib_workqueue, &priv->flush_task); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame^] | 260 | } else if (record->event == IB_EVENT_PKEY_CHANGE) { |
| 261 | ipoib_dbg(priv, "P_Key change event on port:%d\n", priv->port); |
| 262 | queue_work(ipoib_workqueue, &priv->pkey_event_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | } |
| 264 | } |