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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | */ |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include "ipoib.h" |
| 35 | |
Eli Cohen | d0de136 | 2008-07-14 23:48:50 -0700 | [diff] [blame] | 36 | int ipoib_mcast_attach(struct net_device *dev, u16 mlid, union ib_gid *mgid, int set_qkey) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | { |
| 38 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Eli Cohen | d0de136 | 2008-07-14 23:48:50 -0700 | [diff] [blame] | 39 | struct ib_qp_attr *qp_attr = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | int ret; |
| 41 | u16 pkey_index; |
| 42 | |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 43 | if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
| 45 | ret = -ENXIO; |
| 46 | goto out; |
| 47 | } |
| 48 | set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
| 49 | |
Eli Cohen | d0de136 | 2008-07-14 23:48:50 -0700 | [diff] [blame] | 50 | if (set_qkey) { |
| 51 | ret = -ENOMEM; |
| 52 | qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL); |
| 53 | if (!qp_attr) |
| 54 | goto out; |
| 55 | |
| 56 | /* set correct QKey for QP */ |
| 57 | qp_attr->qkey = priv->qkey; |
| 58 | ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY); |
| 59 | if (ret) { |
| 60 | ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret); |
| 61 | goto out; |
| 62 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | /* attach QP to multicast group */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | ret = ib_attach_mcast(priv->qp, mgid, mlid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | if (ret) |
| 68 | ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret); |
| 69 | |
| 70 | out: |
| 71 | kfree(qp_attr); |
| 72 | return ret; |
| 73 | } |
| 74 | |
Roland Dreier | 5b6810e | 2005-10-11 11:08:24 -0700 | [diff] [blame] | 75 | int ipoib_init_qp(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | { |
| 77 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 78 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | struct ib_qp_attr qp_attr; |
| 80 | int attr_mask; |
| 81 | |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 82 | if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) |
| 83 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
| 85 | qp_attr.qp_state = IB_QPS_INIT; |
| 86 | qp_attr.qkey = 0; |
| 87 | qp_attr.port_num = priv->port; |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 88 | qp_attr.pkey_index = priv->pkey_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | attr_mask = |
| 90 | IB_QP_QKEY | |
| 91 | IB_QP_PORT | |
| 92 | IB_QP_PKEY_INDEX | |
| 93 | IB_QP_STATE; |
| 94 | ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); |
| 95 | if (ret) { |
| 96 | ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret); |
| 97 | goto out_fail; |
| 98 | } |
| 99 | |
| 100 | qp_attr.qp_state = IB_QPS_RTR; |
| 101 | /* Can't set this in a INIT->RTR transition */ |
| 102 | attr_mask &= ~IB_QP_PORT; |
| 103 | ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); |
| 104 | if (ret) { |
| 105 | ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret); |
| 106 | goto out_fail; |
| 107 | } |
| 108 | |
| 109 | qp_attr.qp_state = IB_QPS_RTS; |
| 110 | qp_attr.sq_psn = 0; |
| 111 | attr_mask |= IB_QP_SQ_PSN; |
| 112 | attr_mask &= ~IB_QP_PKEY_INDEX; |
| 113 | ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); |
| 114 | if (ret) { |
| 115 | ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret); |
| 116 | goto out_fail; |
| 117 | } |
| 118 | |
| 119 | return 0; |
| 120 | |
| 121 | out_fail: |
Roland Dreier | 5b6810e | 2005-10-11 11:08:24 -0700 | [diff] [blame] | 122 | qp_attr.qp_state = IB_QPS_RESET; |
| 123 | if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) |
| 124 | ipoib_warn(priv, "Failed to modify QP to RESET state\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
Roland Dreier | 5b6810e | 2005-10-11 11:08:24 -0700 | [diff] [blame] | 126 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca) |
| 130 | { |
| 131 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 132 | struct ib_qp_init_attr init_attr = { |
| 133 | .cap = { |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 134 | .max_send_wr = ipoib_sendq_size, |
| 135 | .max_recv_wr = ipoib_recvq_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | .max_send_sge = 1, |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 137 | .max_recv_sge = IPOIB_UD_RX_SG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | }, |
| 139 | .sq_sig_type = IB_SIGNAL_ALL_WR, |
| 140 | .qp_type = IB_QPT_UD |
| 141 | }; |
| 142 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 143 | int ret, size; |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 144 | int i; |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | priv->pd = ib_alloc_pd(priv->ca); |
| 147 | if (IS_ERR(priv->pd)) { |
| 148 | printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name); |
| 149 | return -ENODEV; |
| 150 | } |
| 151 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 152 | priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE); |
| 153 | if (IS_ERR(priv->mr)) { |
| 154 | printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name); |
| 155 | goto out_free_pd; |
| 156 | } |
| 157 | |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 158 | size = ipoib_recvq_size + 1; |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 159 | ret = ipoib_cm_dev_init(dev); |
Pradeep Satyanarayana | 68e995a | 2008-01-25 14:15:24 -0800 | [diff] [blame] | 160 | if (!ret) { |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 161 | size += ipoib_sendq_size; |
Pradeep Satyanarayana | 68e995a | 2008-01-25 14:15:24 -0800 | [diff] [blame] | 162 | if (ipoib_cm_has_srq(dev)) |
| 163 | size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */ |
| 164 | else |
| 165 | size += ipoib_recvq_size * ipoib_max_conn_qp; |
| 166 | } |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 167 | |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 168 | priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0); |
| 169 | if (IS_ERR(priv->recv_cq)) { |
| 170 | printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name); |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 171 | goto out_free_mr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | } |
| 173 | |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 174 | priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL, |
| 175 | dev, ipoib_sendq_size, 0); |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 176 | if (IS_ERR(priv->send_cq)) { |
| 177 | printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name); |
| 178 | goto out_free_recv_cq; |
| 179 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 181 | if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP)) |
| 182 | goto out_free_send_cq; |
| 183 | |
| 184 | init_attr.send_cq = priv->send_cq; |
| 185 | init_attr.recv_cq = priv->recv_cq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 187 | if (priv->hca_caps & IB_DEVICE_UD_TSO) |
Ron Livne | 1240673 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 188 | init_attr.create_flags |= IB_QP_CREATE_IPOIB_UD_LSO; |
| 189 | |
| 190 | if (priv->hca_caps & IB_DEVICE_BLOCK_MULTICAST_LOOPBACK) |
| 191 | init_attr.create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 192 | |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 193 | if (dev->features & NETIF_F_SG) |
| 194 | init_attr.cap.max_send_sge = MAX_SKB_FRAGS + 1; |
| 195 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | priv->qp = ib_create_qp(priv->pd, &init_attr); |
| 197 | if (IS_ERR(priv->qp)) { |
| 198 | printk(KERN_WARNING "%s: failed to create QP\n", ca->name); |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 199 | goto out_free_send_cq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | priv->dev->dev_addr[1] = (priv->qp->qp_num >> 16) & 0xff; |
| 203 | priv->dev->dev_addr[2] = (priv->qp->qp_num >> 8) & 0xff; |
| 204 | priv->dev->dev_addr[3] = (priv->qp->qp_num ) & 0xff; |
| 205 | |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 206 | for (i = 0; i < MAX_SKB_FRAGS + 1; ++i) |
| 207 | priv->tx_sge[i].lkey = priv->mr->lkey; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 209 | priv->tx_wr.opcode = IB_WR_SEND; |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 210 | priv->tx_wr.sg_list = priv->tx_sge; |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 211 | priv->tx_wr.send_flags = IB_SEND_SIGNALED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 213 | priv->rx_sge[0].lkey = priv->mr->lkey; |
| 214 | if (ipoib_ud_need_sg(priv->max_ib_mtu)) { |
| 215 | priv->rx_sge[0].length = IPOIB_UD_HEAD_SIZE; |
| 216 | priv->rx_sge[1].length = PAGE_SIZE; |
| 217 | priv->rx_sge[1].lkey = priv->mr->lkey; |
| 218 | priv->rx_wr.num_sge = IPOIB_UD_RX_SG; |
| 219 | } else { |
| 220 | priv->rx_sge[0].length = IPOIB_UD_BUF_SIZE(priv->max_ib_mtu); |
| 221 | priv->rx_wr.num_sge = 1; |
| 222 | } |
| 223 | priv->rx_wr.next = NULL; |
| 224 | priv->rx_wr.sg_list = priv->rx_sge; |
| 225 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | return 0; |
| 227 | |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 228 | out_free_send_cq: |
| 229 | ib_destroy_cq(priv->send_cq); |
| 230 | |
| 231 | out_free_recv_cq: |
| 232 | ib_destroy_cq(priv->recv_cq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 234 | out_free_mr: |
| 235 | ib_dereg_mr(priv->mr); |
Jack Morgenstein | 6958e82 | 2007-08-06 17:09:09 +0300 | [diff] [blame] | 236 | ipoib_cm_dev_cleanup(dev); |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 237 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | out_free_pd: |
| 239 | ib_dealloc_pd(priv->pd); |
| 240 | return -ENODEV; |
| 241 | } |
| 242 | |
| 243 | void ipoib_transport_dev_cleanup(struct net_device *dev) |
| 244 | { |
| 245 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 246 | |
| 247 | if (priv->qp) { |
| 248 | if (ib_destroy_qp(priv->qp)) |
| 249 | ipoib_warn(priv, "ib_qp_destroy failed\n"); |
| 250 | |
| 251 | priv->qp = NULL; |
| 252 | clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
| 253 | } |
| 254 | |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 255 | if (ib_destroy_cq(priv->send_cq)) |
| 256 | ipoib_warn(priv, "ib_cq_destroy (send) failed\n"); |
| 257 | |
| 258 | if (ib_destroy_cq(priv->recv_cq)) |
| 259 | ipoib_warn(priv, "ib_cq_destroy (recv) failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 261 | ipoib_cm_dev_cleanup(dev); |
| 262 | |
| 263 | if (ib_dereg_mr(priv->mr)) |
| 264 | ipoib_warn(priv, "ib_dereg_mr failed\n"); |
| 265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | if (ib_dealloc_pd(priv->pd)) |
| 267 | ipoib_warn(priv, "ib_dealloc_pd failed\n"); |
| 268 | } |
| 269 | |
| 270 | void ipoib_event(struct ib_event_handler *handler, |
| 271 | struct ib_event *record) |
| 272 | { |
| 273 | struct ipoib_dev_priv *priv = |
| 274 | container_of(handler, struct ipoib_dev_priv, event_handler); |
| 275 | |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 276 | if (record->element.port_num != priv->port) |
| 277 | return; |
| 278 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 279 | ipoib_dbg(priv, "Event %d on device %s port %d\n", record->event, |
| 280 | record->device->name, record->element.port_num); |
| 281 | |
| 282 | if (record->event == IB_EVENT_SM_CHANGE || |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 283 | record->event == IB_EVENT_CLIENT_REREGISTER) { |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 284 | queue_work(ipoib_workqueue, &priv->flush_light); |
| 285 | } else if (record->event == IB_EVENT_PORT_ERR || |
| 286 | record->event == IB_EVENT_PORT_ACTIVE || |
| 287 | record->event == IB_EVENT_LID_CHANGE) { |
| 288 | queue_work(ipoib_workqueue, &priv->flush_normal); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 289 | } else if (record->event == IB_EVENT_PKEY_CHANGE) { |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 290 | queue_work(ipoib_workqueue, &priv->flush_heavy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | } |
| 292 | } |