Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. |
Roland Dreier | 2a1d9b7 | 2005-08-10 23:03:10 -0700 | [diff] [blame] | 3 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
| 4 | * Copyright (c) 2004 Voltaire, Inc. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * |
| 6 | * This software is available to you under a choice of one of two |
| 7 | * licenses. You may choose to be licensed under the terms of the GNU |
| 8 | * General Public License (GPL) Version 2, available from the file |
| 9 | * COPYING in the main directory of this source tree, or the |
| 10 | * OpenIB.org BSD license below: |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or |
| 13 | * without modification, are permitted provided that the following |
| 14 | * conditions are met: |
| 15 | * |
| 16 | * - Redistributions of source code must retain the above |
| 17 | * copyright notice, this list of conditions and the following |
| 18 | * disclaimer. |
| 19 | * |
| 20 | * - Redistributions in binary form must reproduce the above |
| 21 | * copyright notice, this list of conditions and the following |
| 22 | * disclaimer in the documentation and/or other materials |
| 23 | * provided with the distribution. |
| 24 | * |
| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 32 | * SOFTWARE. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | */ |
| 34 | |
| 35 | #include "ipoib.h" |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/module.h> |
| 38 | |
| 39 | #include <linux/init.h> |
| 40 | #include <linux/slab.h> |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 41 | #include <linux/kernel.h> |
Roland Dreier | 10313cb | 2008-03-12 07:51:03 -0700 | [diff] [blame] | 42 | #include <linux/vmalloc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
| 44 | #include <linux/if_arp.h> /* For ARPHRD_xxx */ |
| 45 | |
| 46 | #include <linux/ip.h> |
| 47 | #include <linux/in.h> |
| 48 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 49 | #include <net/dst.h> |
| 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | MODULE_AUTHOR("Roland Dreier"); |
| 52 | MODULE_DESCRIPTION("IP-over-InfiniBand net driver"); |
| 53 | MODULE_LICENSE("Dual BSD/GPL"); |
| 54 | |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 55 | int ipoib_sendq_size __read_mostly = IPOIB_TX_RING_SIZE; |
| 56 | int ipoib_recvq_size __read_mostly = IPOIB_RX_RING_SIZE; |
| 57 | |
| 58 | module_param_named(send_queue_size, ipoib_sendq_size, int, 0444); |
| 59 | MODULE_PARM_DESC(send_queue_size, "Number of descriptors in send queue"); |
| 60 | module_param_named(recv_queue_size, ipoib_recvq_size, int, 0444); |
| 61 | MODULE_PARM_DESC(recv_queue_size, "Number of descriptors in receive queue"); |
| 62 | |
Vladimir Sokolovsky | af40da8 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 63 | static int lro; |
| 64 | module_param(lro, bool, 0444); |
| 65 | MODULE_PARM_DESC(lro, "Enable LRO (Large Receive Offload)"); |
| 66 | |
| 67 | static int lro_max_aggr = IPOIB_LRO_MAX_AGGR; |
| 68 | module_param(lro_max_aggr, int, 0644); |
| 69 | MODULE_PARM_DESC(lro_max_aggr, "LRO: Max packets to be aggregated " |
| 70 | "(default = 64)"); |
| 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
| 73 | int ipoib_debug_level; |
| 74 | |
| 75 | module_param_named(debug_level, ipoib_debug_level, int, 0644); |
| 76 | MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0"); |
| 77 | #endif |
| 78 | |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 79 | struct ipoib_path_iter { |
| 80 | struct net_device *dev; |
| 81 | struct ipoib_path path; |
| 82 | }; |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | static const u8 ipv4_bcast_addr[] = { |
| 85 | 0x00, 0xff, 0xff, 0xff, |
| 86 | 0xff, 0x12, 0x40, 0x1b, 0x00, 0x00, 0x00, 0x00, |
| 87 | 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff |
| 88 | }; |
| 89 | |
| 90 | struct workqueue_struct *ipoib_workqueue; |
| 91 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 92 | struct ib_sa_client ipoib_sa_client; |
| 93 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | static void ipoib_add_one(struct ib_device *device); |
| 95 | static void ipoib_remove_one(struct ib_device *device); |
| 96 | |
| 97 | static struct ib_client ipoib_client = { |
| 98 | .name = "ipoib", |
| 99 | .add = ipoib_add_one, |
| 100 | .remove = ipoib_remove_one |
| 101 | }; |
| 102 | |
| 103 | int ipoib_open(struct net_device *dev) |
| 104 | { |
| 105 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 106 | |
| 107 | ipoib_dbg(priv, "bringing up interface\n"); |
| 108 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 109 | napi_enable(&priv->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | set_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags); |
| 111 | |
| 112 | if (ipoib_pkey_dev_delay_open(dev)) |
| 113 | return 0; |
| 114 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 115 | if (ipoib_ib_dev_open(dev)) { |
| 116 | napi_disable(&priv->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | return -EINVAL; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 118 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Roland Dreier | 267ee88 | 2005-11-29 10:55:58 -0800 | [diff] [blame] | 120 | if (ipoib_ib_dev_up(dev)) { |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 121 | ipoib_ib_dev_stop(dev, 1); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 122 | napi_disable(&priv->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | return -EINVAL; |
Roland Dreier | 267ee88 | 2005-11-29 10:55:58 -0800 | [diff] [blame] | 124 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { |
| 127 | struct ipoib_dev_priv *cpriv; |
| 128 | |
| 129 | /* Bring up any child interfaces too */ |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 130 | mutex_lock(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | list_for_each_entry(cpriv, &priv->child_intfs, list) { |
| 132 | int flags; |
| 133 | |
| 134 | flags = cpriv->dev->flags; |
| 135 | if (flags & IFF_UP) |
| 136 | continue; |
| 137 | |
| 138 | dev_change_flags(cpriv->dev, flags | IFF_UP); |
| 139 | } |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 140 | mutex_unlock(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | } |
| 142 | |
| 143 | netif_start_queue(dev); |
| 144 | |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | static int ipoib_stop(struct net_device *dev) |
| 149 | { |
| 150 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 151 | |
| 152 | ipoib_dbg(priv, "stopping interface\n"); |
| 153 | |
| 154 | clear_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 155 | napi_disable(&priv->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
| 157 | netif_stop_queue(dev); |
| 158 | |
Roland Dreier | a77a57a | 2008-08-19 15:01:32 -0700 | [diff] [blame] | 159 | ipoib_ib_dev_down(dev, 0); |
| 160 | ipoib_ib_dev_stop(dev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
| 162 | if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { |
| 163 | struct ipoib_dev_priv *cpriv; |
| 164 | |
| 165 | /* Bring down any child interfaces too */ |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 166 | mutex_lock(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | list_for_each_entry(cpriv, &priv->child_intfs, list) { |
| 168 | int flags; |
| 169 | |
| 170 | flags = cpriv->dev->flags; |
| 171 | if (!(flags & IFF_UP)) |
| 172 | continue; |
| 173 | |
| 174 | dev_change_flags(cpriv->dev, flags & ~IFF_UP); |
| 175 | } |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 176 | mutex_unlock(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | static int ipoib_change_mtu(struct net_device *dev, int new_mtu) |
| 183 | { |
| 184 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 185 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 186 | /* dev->mtu > 2K ==> connected mode */ |
Pradeep Satyanarayana | 586a693 | 2007-12-21 13:08:23 -0800 | [diff] [blame] | 187 | if (ipoib_cm_admin_enabled(dev)) { |
| 188 | if (new_mtu > ipoib_cm_max_mtu(dev)) |
| 189 | return -EINVAL; |
| 190 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 191 | if (new_mtu > priv->mcast_mtu) |
| 192 | ipoib_warn(priv, "mtu > %d will cause multicast packet drops.\n", |
| 193 | priv->mcast_mtu); |
Pradeep Satyanarayana | 586a693 | 2007-12-21 13:08:23 -0800 | [diff] [blame] | 194 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 195 | dev->mtu = new_mtu; |
| 196 | return 0; |
| 197 | } |
| 198 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 199 | if (new_mtu > IPOIB_UD_MTU(priv->max_ib_mtu)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | return -EINVAL; |
| 201 | |
| 202 | priv->admin_mtu = new_mtu; |
| 203 | |
| 204 | dev->mtu = min(priv->mcast_mtu, priv->admin_mtu); |
| 205 | |
| 206 | return 0; |
| 207 | } |
| 208 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 209 | static struct ipoib_path *__path_find(struct net_device *dev, void *gid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | { |
| 211 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 212 | struct rb_node *n = priv->path_tree.rb_node; |
| 213 | struct ipoib_path *path; |
| 214 | int ret; |
| 215 | |
| 216 | while (n) { |
| 217 | path = rb_entry(n, struct ipoib_path, rb_node); |
| 218 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 219 | ret = memcmp(gid, path->pathrec.dgid.raw, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | sizeof (union ib_gid)); |
| 221 | |
| 222 | if (ret < 0) |
| 223 | n = n->rb_left; |
| 224 | else if (ret > 0) |
| 225 | n = n->rb_right; |
| 226 | else |
| 227 | return path; |
| 228 | } |
| 229 | |
| 230 | return NULL; |
| 231 | } |
| 232 | |
| 233 | static int __path_add(struct net_device *dev, struct ipoib_path *path) |
| 234 | { |
| 235 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 236 | struct rb_node **n = &priv->path_tree.rb_node; |
| 237 | struct rb_node *pn = NULL; |
| 238 | struct ipoib_path *tpath; |
| 239 | int ret; |
| 240 | |
| 241 | while (*n) { |
| 242 | pn = *n; |
| 243 | tpath = rb_entry(pn, struct ipoib_path, rb_node); |
| 244 | |
| 245 | ret = memcmp(path->pathrec.dgid.raw, tpath->pathrec.dgid.raw, |
| 246 | sizeof (union ib_gid)); |
| 247 | if (ret < 0) |
| 248 | n = &pn->rb_left; |
| 249 | else if (ret > 0) |
| 250 | n = &pn->rb_right; |
| 251 | else |
| 252 | return -EEXIST; |
| 253 | } |
| 254 | |
| 255 | rb_link_node(&path->rb_node, pn, n); |
| 256 | rb_insert_color(&path->rb_node, &priv->path_tree); |
| 257 | |
| 258 | list_add_tail(&path->list, &priv->path_list); |
| 259 | |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | static void path_free(struct net_device *dev, struct ipoib_path *path) |
| 264 | { |
| 265 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 266 | struct ipoib_neigh *neigh, *tn; |
| 267 | struct sk_buff *skb; |
| 268 | unsigned long flags; |
| 269 | |
| 270 | while ((skb = __skb_dequeue(&path->queue))) |
| 271 | dev_kfree_skb_irq(skb); |
| 272 | |
| 273 | spin_lock_irqsave(&priv->lock, flags); |
| 274 | |
| 275 | list_for_each_entry_safe(neigh, tn, &path->neigh_list, list) { |
| 276 | /* |
| 277 | * It's safe to call ipoib_put_ah() inside priv->lock |
| 278 | * here, because we know that path->ah will always |
| 279 | * hold one more reference, so ipoib_put_ah() will |
| 280 | * never do more than decrement the ref count. |
| 281 | */ |
| 282 | if (neigh->ah) |
| 283 | ipoib_put_ah(neigh->ah); |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 284 | |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 285 | ipoib_neigh_free(dev, neigh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | spin_unlock_irqrestore(&priv->lock, flags); |
| 289 | |
| 290 | if (path->ah) |
| 291 | ipoib_put_ah(path->ah); |
| 292 | |
| 293 | kfree(path); |
| 294 | } |
| 295 | |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 296 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
| 297 | |
| 298 | struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev) |
| 299 | { |
| 300 | struct ipoib_path_iter *iter; |
| 301 | |
| 302 | iter = kmalloc(sizeof *iter, GFP_KERNEL); |
| 303 | if (!iter) |
| 304 | return NULL; |
| 305 | |
| 306 | iter->dev = dev; |
| 307 | memset(iter->path.pathrec.dgid.raw, 0, 16); |
| 308 | |
| 309 | if (ipoib_path_iter_next(iter)) { |
| 310 | kfree(iter); |
| 311 | return NULL; |
| 312 | } |
| 313 | |
| 314 | return iter; |
| 315 | } |
| 316 | |
| 317 | int ipoib_path_iter_next(struct ipoib_path_iter *iter) |
| 318 | { |
| 319 | struct ipoib_dev_priv *priv = netdev_priv(iter->dev); |
| 320 | struct rb_node *n; |
| 321 | struct ipoib_path *path; |
| 322 | int ret = 1; |
| 323 | |
| 324 | spin_lock_irq(&priv->lock); |
| 325 | |
| 326 | n = rb_first(&priv->path_tree); |
| 327 | |
| 328 | while (n) { |
| 329 | path = rb_entry(n, struct ipoib_path, rb_node); |
| 330 | |
| 331 | if (memcmp(iter->path.pathrec.dgid.raw, path->pathrec.dgid.raw, |
| 332 | sizeof (union ib_gid)) < 0) { |
| 333 | iter->path = *path; |
| 334 | ret = 0; |
| 335 | break; |
| 336 | } |
| 337 | |
| 338 | n = rb_next(n); |
| 339 | } |
| 340 | |
| 341 | spin_unlock_irq(&priv->lock); |
| 342 | |
| 343 | return ret; |
| 344 | } |
| 345 | |
| 346 | void ipoib_path_iter_read(struct ipoib_path_iter *iter, |
| 347 | struct ipoib_path *path) |
| 348 | { |
| 349 | *path = iter->path; |
| 350 | } |
| 351 | |
| 352 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ |
| 353 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 354 | void ipoib_mark_paths_invalid(struct net_device *dev) |
| 355 | { |
| 356 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 357 | struct ipoib_path *path, *tp; |
| 358 | |
| 359 | spin_lock_irq(&priv->lock); |
| 360 | |
| 361 | list_for_each_entry_safe(path, tp, &priv->path_list, list) { |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame^] | 362 | ipoib_dbg(priv, "mark path LID 0x%04x GID %pI6 invalid\n", |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 363 | be16_to_cpu(path->pathrec.dlid), |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 364 | path->pathrec.dgid.raw); |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 365 | path->valid = 0; |
| 366 | } |
| 367 | |
| 368 | spin_unlock_irq(&priv->lock); |
| 369 | } |
| 370 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | void ipoib_flush_paths(struct net_device *dev) |
| 372 | { |
| 373 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 374 | struct ipoib_path *path, *tp; |
| 375 | LIST_HEAD(remove_list); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 376 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 378 | netif_tx_lock_bh(dev); |
| 379 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
Robert P. J. Day | 157de22 | 2008-04-16 21:09:26 -0700 | [diff] [blame] | 381 | list_splice_init(&priv->path_list, &remove_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | |
| 383 | list_for_each_entry(path, &remove_list, list) |
| 384 | rb_erase(&path->rb_node, &priv->path_tree); |
| 385 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | list_for_each_entry_safe(path, tp, &remove_list, list) { |
| 387 | if (path->query) |
| 388 | ib_sa_cancel_query(path->query_id, path->query); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 389 | spin_unlock_irqrestore(&priv->lock, flags); |
| 390 | netif_tx_unlock_bh(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | wait_for_completion(&path->done); |
| 392 | path_free(dev, path); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 393 | netif_tx_lock_bh(dev); |
| 394 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | } |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 396 | |
| 397 | spin_unlock_irqrestore(&priv->lock, flags); |
| 398 | netif_tx_unlock_bh(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | } |
| 400 | |
| 401 | static void path_rec_completion(int status, |
| 402 | struct ib_sa_path_rec *pathrec, |
| 403 | void *path_ptr) |
| 404 | { |
| 405 | struct ipoib_path *path = path_ptr; |
| 406 | struct net_device *dev = path->dev; |
| 407 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 408 | struct ipoib_ah *ah = NULL; |
Roland Dreier | c9da4ba | 2008-09-25 15:26:15 -0700 | [diff] [blame] | 409 | struct ipoib_ah *old_ah = NULL; |
Michael S. Tsirkin | d04d01b | 2007-03-22 14:40:16 -0700 | [diff] [blame] | 410 | struct ipoib_neigh *neigh, *tn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | struct sk_buff_head skqueue; |
| 412 | struct sk_buff *skb; |
| 413 | unsigned long flags; |
| 414 | |
Roland Dreier | 843613b | 2007-02-26 12:57:08 -0800 | [diff] [blame] | 415 | if (!status) |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame^] | 416 | ipoib_dbg(priv, "PathRec LID 0x%04x for GID %pI6\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 417 | be16_to_cpu(pathrec->dlid), pathrec->dgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | else |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame^] | 419 | ipoib_dbg(priv, "PathRec status %d for GID %pI6\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 420 | status, path->pathrec.dgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
| 422 | skb_queue_head_init(&skqueue); |
| 423 | |
| 424 | if (!status) { |
Sean Hefty | 46f1b3d | 2007-04-05 11:50:11 -0700 | [diff] [blame] | 425 | struct ib_ah_attr av; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
Sean Hefty | 46f1b3d | 2007-04-05 11:50:11 -0700 | [diff] [blame] | 427 | if (!ib_init_ah_from_path(priv->ca, priv->port, pathrec, &av)) |
| 428 | ah = ipoib_create_ah(dev, priv->pd, &av); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | } |
| 430 | |
| 431 | spin_lock_irqsave(&priv->lock, flags); |
| 432 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | if (ah) { |
| 434 | path->pathrec = *pathrec; |
| 435 | |
Roland Dreier | c9da4ba | 2008-09-25 15:26:15 -0700 | [diff] [blame] | 436 | old_ah = path->ah; |
| 437 | path->ah = ah; |
| 438 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | ipoib_dbg(priv, "created address handle %p for LID 0x%04x, SL %d\n", |
| 440 | ah, be16_to_cpu(pathrec->dlid), pathrec->sl); |
| 441 | |
| 442 | while ((skb = __skb_dequeue(&path->queue))) |
| 443 | __skb_queue_tail(&skqueue, skb); |
| 444 | |
Michael S. Tsirkin | d04d01b | 2007-03-22 14:40:16 -0700 | [diff] [blame] | 445 | list_for_each_entry_safe(neigh, tn, &path->neigh_list, list) { |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 446 | if (neigh->ah) { |
| 447 | WARN_ON(neigh->ah != old_ah); |
| 448 | /* |
| 449 | * Dropping the ah reference inside |
| 450 | * priv->lock is safe here, because we |
| 451 | * will hold one more reference from |
| 452 | * the original value of path->ah (ie |
| 453 | * old_ah). |
| 454 | */ |
| 455 | ipoib_put_ah(neigh->ah); |
| 456 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | kref_get(&path->ah->ref); |
| 458 | neigh->ah = path->ah; |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 459 | memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw, |
| 460 | sizeof(union ib_gid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 462 | if (ipoib_cm_enabled(dev, neigh->neighbour)) { |
| 463 | if (!ipoib_cm_get(neigh)) |
| 464 | ipoib_cm_set(neigh, ipoib_cm_create_tx(dev, |
| 465 | path, |
| 466 | neigh)); |
| 467 | if (!ipoib_cm_get(neigh)) { |
| 468 | list_del(&neigh->list); |
| 469 | if (neigh->ah) |
| 470 | ipoib_put_ah(neigh->ah); |
| 471 | ipoib_neigh_free(dev, neigh); |
| 472 | continue; |
| 473 | } |
| 474 | } |
| 475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | while ((skb = __skb_dequeue(&neigh->queue))) |
| 477 | __skb_queue_tail(&skqueue, skb); |
| 478 | } |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 479 | path->valid = 1; |
Roland Dreier | 5872a9f | 2005-11-29 10:13:54 -0800 | [diff] [blame] | 480 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Roland Dreier | 5872a9f | 2005-11-29 10:13:54 -0800 | [diff] [blame] | 482 | path->query = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | complete(&path->done); |
| 484 | |
| 485 | spin_unlock_irqrestore(&priv->lock, flags); |
| 486 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 487 | if (old_ah) |
| 488 | ipoib_put_ah(old_ah); |
| 489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | while ((skb = __skb_dequeue(&skqueue))) { |
| 491 | skb->dev = dev; |
| 492 | if (dev_queue_xmit(skb)) |
| 493 | ipoib_warn(priv, "dev_queue_xmit failed " |
| 494 | "to requeue packet\n"); |
| 495 | } |
| 496 | } |
| 497 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 498 | static struct ipoib_path *path_rec_create(struct net_device *dev, void *gid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | { |
| 500 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 501 | struct ipoib_path *path; |
| 502 | |
Jack Morgenstein | 1401b53 | 2007-11-26 10:41:19 +0200 | [diff] [blame] | 503 | if (!priv->broadcast) |
| 504 | return NULL; |
| 505 | |
Roland Dreier | 21a3848 | 2005-11-02 10:07:59 -0800 | [diff] [blame] | 506 | path = kzalloc(sizeof *path, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | if (!path) |
| 508 | return NULL; |
| 509 | |
Roland Dreier | 21a3848 | 2005-11-02 10:07:59 -0800 | [diff] [blame] | 510 | path->dev = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | |
| 512 | skb_queue_head_init(&path->queue); |
| 513 | |
| 514 | INIT_LIST_HEAD(&path->neigh_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 516 | memcpy(path->pathrec.dgid.raw, gid, sizeof (union ib_gid)); |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 517 | path->pathrec.sgid = priv->local_gid; |
| 518 | path->pathrec.pkey = cpu_to_be16(priv->pkey); |
Sean Hefty | 8166883 | 2007-08-02 12:21:31 -0700 | [diff] [blame] | 519 | path->pathrec.numb_path = 1; |
| 520 | path->pathrec.traffic_class = priv->broadcast->mcmember.traffic_class; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
| 522 | return path; |
| 523 | } |
| 524 | |
| 525 | static int path_rec_start(struct net_device *dev, |
| 526 | struct ipoib_path *path) |
| 527 | { |
| 528 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 529 | |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame^] | 530 | ipoib_dbg(priv, "Start path record lookup for %pI6\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 531 | path->pathrec.dgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | |
Roland Dreier | 65c7edd | 2005-11-28 21:20:34 -0800 | [diff] [blame] | 533 | init_completion(&path->done); |
| 534 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | path->query_id = |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 536 | ib_sa_path_rec_get(&ipoib_sa_client, priv->ca, priv->port, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | &path->pathrec, |
| 538 | IB_SA_PATH_REC_DGID | |
| 539 | IB_SA_PATH_REC_SGID | |
| 540 | IB_SA_PATH_REC_NUMB_PATH | |
Sean Hefty | 8166883 | 2007-08-02 12:21:31 -0700 | [diff] [blame] | 541 | IB_SA_PATH_REC_TRAFFIC_CLASS | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | IB_SA_PATH_REC_PKEY, |
| 543 | 1000, GFP_ATOMIC, |
| 544 | path_rec_completion, |
| 545 | path, &path->query); |
| 546 | if (path->query_id < 0) { |
Or Gerlitz | 01b3fc8 | 2008-07-22 14:18:34 -0700 | [diff] [blame] | 547 | ipoib_warn(priv, "ib_sa_path_rec_get failed: %d\n", path->query_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | path->query = NULL; |
| 549 | return path->query_id; |
| 550 | } |
| 551 | |
| 552 | return 0; |
| 553 | } |
| 554 | |
| 555 | static void neigh_add_path(struct sk_buff *skb, struct net_device *dev) |
| 556 | { |
| 557 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 558 | struct ipoib_path *path; |
| 559 | struct ipoib_neigh *neigh; |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 560 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 562 | neigh = ipoib_neigh_alloc(skb->dst->neighbour, skb->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | if (!neigh) { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 564 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | dev_kfree_skb_any(skb); |
| 566 | return; |
| 567 | } |
| 568 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 569 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 571 | path = __path_find(dev, skb->dst->neighbour->ha + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | if (!path) { |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 573 | path = path_rec_create(dev, skb->dst->neighbour->ha + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | if (!path) |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 575 | goto err_path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | |
| 577 | __path_add(dev, path); |
| 578 | } |
| 579 | |
| 580 | list_add_tail(&neigh->list, &path->neigh_list); |
| 581 | |
Michael S. Tsirkin | 47f7a07 | 2006-01-17 09:22:05 -0800 | [diff] [blame] | 582 | if (path->ah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | kref_get(&path->ah->ref); |
| 584 | neigh->ah = path->ah; |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 585 | memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw, |
| 586 | sizeof(union ib_gid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 588 | if (ipoib_cm_enabled(dev, neigh->neighbour)) { |
| 589 | if (!ipoib_cm_get(neigh)) |
| 590 | ipoib_cm_set(neigh, ipoib_cm_create_tx(dev, path, neigh)); |
| 591 | if (!ipoib_cm_get(neigh)) { |
| 592 | list_del(&neigh->list); |
| 593 | if (neigh->ah) |
| 594 | ipoib_put_ah(neigh->ah); |
| 595 | ipoib_neigh_free(dev, neigh); |
| 596 | goto err_drop; |
| 597 | } |
| 598 | if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) |
| 599 | __skb_queue_tail(&neigh->queue, skb); |
| 600 | else { |
| 601 | ipoib_warn(priv, "queue length limit %d. Packet drop.\n", |
| 602 | skb_queue_len(&neigh->queue)); |
| 603 | goto err_drop; |
| 604 | } |
| 605 | } else |
| 606 | ipoib_send(dev, skb, path->ah, IPOIB_QPN(skb->dst->neighbour->ha)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | } else { |
| 608 | neigh->ah = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | |
| 610 | if (!path->query && path_rec_start(dev, path)) |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 611 | goto err_list; |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 612 | |
| 613 | __skb_queue_tail(&neigh->queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | } |
| 615 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 616 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | return; |
| 618 | |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 619 | err_list: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | list_del(&neigh->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 622 | err_path: |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 623 | ipoib_neigh_free(dev, neigh); |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 624 | err_drop: |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 625 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | dev_kfree_skb_any(skb); |
| 627 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 628 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | } |
| 630 | |
Roland Dreier | d70ed60 | 2005-09-28 19:56:57 -0700 | [diff] [blame] | 631 | static void ipoib_path_lookup(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | { |
| 633 | struct ipoib_dev_priv *priv = netdev_priv(skb->dev); |
| 634 | |
| 635 | /* Look up path record for unicasts */ |
| 636 | if (skb->dst->neighbour->ha[4] != 0xff) { |
| 637 | neigh_add_path(skb, dev); |
| 638 | return; |
| 639 | } |
| 640 | |
| 641 | /* Add in the P_Key for multicasts */ |
| 642 | skb->dst->neighbour->ha[8] = (priv->pkey >> 8) & 0xff; |
| 643 | skb->dst->neighbour->ha[9] = priv->pkey & 0xff; |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 644 | ipoib_mcast_send(dev, skb->dst->neighbour->ha + 4, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | } |
| 646 | |
| 647 | static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev, |
| 648 | struct ipoib_pseudoheader *phdr) |
| 649 | { |
| 650 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 651 | struct ipoib_path *path; |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 652 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 654 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 656 | path = __path_find(dev, phdr->hwaddr + 4); |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 657 | if (!path || !path->valid) { |
| 658 | if (!path) |
| 659 | path = path_rec_create(dev, phdr->hwaddr + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | if (path) { |
| 661 | /* put pseudoheader back on for next time */ |
| 662 | skb_push(skb, sizeof *phdr); |
| 663 | __skb_queue_tail(&path->queue, skb); |
| 664 | |
| 665 | if (path_rec_start(dev, path)) { |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 666 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | path_free(dev, path); |
| 668 | return; |
| 669 | } else |
| 670 | __path_add(dev, path); |
| 671 | } else { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 672 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | dev_kfree_skb_any(skb); |
| 674 | } |
| 675 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 676 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | return; |
| 678 | } |
| 679 | |
Michael S. Tsirkin | 47f7a07 | 2006-01-17 09:22:05 -0800 | [diff] [blame] | 680 | if (path->ah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | ipoib_dbg(priv, "Send unicast ARP to %04x\n", |
| 682 | be16_to_cpu(path->pathrec.dlid)); |
| 683 | |
Michael S. Tsirkin | 073ae84 | 2006-11-16 10:59:12 +0200 | [diff] [blame] | 684 | ipoib_send(dev, skb, path->ah, IPOIB_QPN(phdr->hwaddr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | } else if ((path->query || !path_rec_start(dev, path)) && |
| 686 | skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) { |
| 687 | /* put pseudoheader back on for next time */ |
| 688 | skb_push(skb, sizeof *phdr); |
| 689 | __skb_queue_tail(&path->queue, skb); |
| 690 | } else { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 691 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | dev_kfree_skb_any(skb); |
| 693 | } |
| 694 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 695 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | } |
| 697 | |
| 698 | static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 699 | { |
| 700 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 701 | struct ipoib_neigh *neigh; |
| 702 | unsigned long flags; |
| 703 | |
Eli Cohen | a8bfca0 | 2006-09-22 15:22:58 -0700 | [diff] [blame] | 704 | if (likely(skb->dst && skb->dst->neighbour)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | if (unlikely(!*to_ipoib_neigh(skb->dst->neighbour))) { |
Roland Dreier | d70ed60 | 2005-09-28 19:56:57 -0700 | [diff] [blame] | 706 | ipoib_path_lookup(skb, dev); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 707 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | neigh = *to_ipoib_neigh(skb->dst->neighbour); |
| 711 | |
Or Gerlitz | bafff97 | 2008-01-17 17:03:45 +0200 | [diff] [blame] | 712 | if (neigh->ah) |
Moni Shoua | 200d171 | 2007-10-09 19:43:37 -0700 | [diff] [blame] | 713 | if (unlikely((memcmp(&neigh->dgid.raw, |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 714 | skb->dst->neighbour->ha + 4, |
Moni Shoua | 200d171 | 2007-10-09 19:43:37 -0700 | [diff] [blame] | 715 | sizeof(union ib_gid))) || |
| 716 | (neigh->dev != dev))) { |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 717 | spin_lock_irqsave(&priv->lock, flags); |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 718 | /* |
| 719 | * It's safe to call ipoib_put_ah() inside |
| 720 | * priv->lock here, because we know that |
| 721 | * path->ah will always hold one more reference, |
| 722 | * so ipoib_put_ah() will never do more than |
| 723 | * decrement the ref count. |
| 724 | */ |
| 725 | ipoib_put_ah(neigh->ah); |
| 726 | list_del(&neigh->list); |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 727 | ipoib_neigh_free(dev, neigh); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 728 | spin_unlock_irqrestore(&priv->lock, flags); |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 729 | ipoib_path_lookup(skb, dev); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 730 | return NETDEV_TX_OK; |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 731 | } |
| 732 | |
Or Gerlitz | bafff97 | 2008-01-17 17:03:45 +0200 | [diff] [blame] | 733 | if (ipoib_cm_get(neigh)) { |
| 734 | if (ipoib_cm_up(neigh)) { |
| 735 | ipoib_cm_send(dev, skb, ipoib_cm_get(neigh)); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 736 | return NETDEV_TX_OK; |
Or Gerlitz | bafff97 | 2008-01-17 17:03:45 +0200 | [diff] [blame] | 737 | } |
| 738 | } else if (neigh->ah) { |
Michael S. Tsirkin | 073ae84 | 2006-11-16 10:59:12 +0200 | [diff] [blame] | 739 | ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(skb->dst->neighbour->ha)); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 740 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | } |
| 742 | |
| 743 | if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) { |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 744 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | __skb_queue_tail(&neigh->queue, skb); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 746 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | } else { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 748 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | dev_kfree_skb_any(skb); |
| 750 | } |
| 751 | } else { |
| 752 | struct ipoib_pseudoheader *phdr = |
| 753 | (struct ipoib_pseudoheader *) skb->data; |
| 754 | skb_pull(skb, sizeof *phdr); |
| 755 | |
| 756 | if (phdr->hwaddr[4] == 0xff) { |
| 757 | /* Add in the P_Key for multicast*/ |
| 758 | phdr->hwaddr[8] = (priv->pkey >> 8) & 0xff; |
| 759 | phdr->hwaddr[9] = priv->pkey & 0xff; |
| 760 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 761 | ipoib_mcast_send(dev, phdr->hwaddr + 4, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | } else { |
Hal Rosenstock | 0dca0f7 | 2005-07-28 13:17:26 -0700 | [diff] [blame] | 763 | /* unicast GID -- should be ARP or RARP reply */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | |
Hal Rosenstock | 0dca0f7 | 2005-07-28 13:17:26 -0700 | [diff] [blame] | 765 | if ((be16_to_cpup((__be16 *) skb->data) != ETH_P_ARP) && |
| 766 | (be16_to_cpup((__be16 *) skb->data) != ETH_P_RARP)) { |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame^] | 767 | ipoib_warn(priv, "Unicast, no %s: type %04x, QPN %06x %pI6\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | skb->dst ? "neigh" : "dst", |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 769 | be16_to_cpup((__be16 *) skb->data), |
Michael S. Tsirkin | 073ae84 | 2006-11-16 10:59:12 +0200 | [diff] [blame] | 770 | IPOIB_QPN(phdr->hwaddr), |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 771 | phdr->hwaddr + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | dev_kfree_skb_any(skb); |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 773 | ++dev->stats.tx_dropped; |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 774 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | unicast_arp_send(skb, dev, phdr); |
| 778 | } |
| 779 | } |
| 780 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | return NETDEV_TX_OK; |
| 782 | } |
| 783 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | static void ipoib_timeout(struct net_device *dev) |
| 785 | { |
| 786 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 787 | |
Roland Dreier | 4b2d319 | 2005-10-18 12:20:06 -0700 | [diff] [blame] | 788 | ipoib_warn(priv, "transmit timeout: latency %d msecs\n", |
| 789 | jiffies_to_msecs(jiffies - dev->trans_start)); |
| 790 | ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n", |
| 791 | netif_queue_stopped(dev), |
| 792 | priv->tx_head, priv->tx_tail); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | /* XXX reset QP, etc. */ |
| 794 | } |
| 795 | |
| 796 | static int ipoib_hard_header(struct sk_buff *skb, |
| 797 | struct net_device *dev, |
| 798 | unsigned short type, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 799 | const void *daddr, const void *saddr, unsigned len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | { |
| 801 | struct ipoib_header *header; |
| 802 | |
| 803 | header = (struct ipoib_header *) skb_push(skb, sizeof *header); |
| 804 | |
| 805 | header->proto = htons(type); |
| 806 | header->reserved = 0; |
| 807 | |
| 808 | /* |
| 809 | * If we don't have a neighbour structure, stuff the |
| 810 | * destination address onto the front of the skb so we can |
| 811 | * figure out where to send the packet later. |
| 812 | */ |
Roland Dreier | ef12d45 | 2006-03-29 09:36:46 -0800 | [diff] [blame] | 813 | if ((!skb->dst || !skb->dst->neighbour) && daddr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | struct ipoib_pseudoheader *phdr = |
| 815 | (struct ipoib_pseudoheader *) skb_push(skb, sizeof *phdr); |
| 816 | memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN); |
| 817 | } |
| 818 | |
| 819 | return 0; |
| 820 | } |
| 821 | |
| 822 | static void ipoib_set_mcast_list(struct net_device *dev) |
| 823 | { |
| 824 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 825 | |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 826 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) { |
| 827 | ipoib_dbg(priv, "IPOIB_FLAG_OPER_UP not set"); |
| 828 | return; |
| 829 | } |
| 830 | |
Michael S. Tsirkin | 1ad62a1 | 2005-08-24 14:41:51 -0700 | [diff] [blame] | 831 | queue_work(ipoib_workqueue, &priv->restart_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | } |
| 833 | |
Alexey Kuznetsov | ecbb416 | 2007-03-24 12:52:16 -0700 | [diff] [blame] | 834 | static void ipoib_neigh_cleanup(struct neighbour *n) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | { |
| 836 | struct ipoib_neigh *neigh; |
| 837 | struct ipoib_dev_priv *priv = netdev_priv(n->dev); |
| 838 | unsigned long flags; |
| 839 | struct ipoib_ah *ah = NULL; |
| 840 | |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 841 | neigh = *to_ipoib_neigh(n); |
Or Gerlitz | 7bc531d | 2008-01-29 12:57:56 +0200 | [diff] [blame] | 842 | if (neigh) |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 843 | priv = netdev_priv(neigh->dev); |
Or Gerlitz | 7bc531d | 2008-01-29 12:57:56 +0200 | [diff] [blame] | 844 | else |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 845 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | ipoib_dbg(priv, |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame^] | 847 | "neigh_cleanup for %06x %pI6\n", |
Michael S. Tsirkin | 073ae84 | 2006-11-16 10:59:12 +0200 | [diff] [blame] | 848 | IPOIB_QPN(n->ha), |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 849 | n->ha + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | |
| 851 | spin_lock_irqsave(&priv->lock, flags); |
| 852 | |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 853 | if (neigh->ah) |
| 854 | ah = neigh->ah; |
| 855 | list_del(&neigh->list); |
| 856 | ipoib_neigh_free(n->dev, neigh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | |
| 858 | spin_unlock_irqrestore(&priv->lock, flags); |
| 859 | |
| 860 | if (ah) |
| 861 | ipoib_put_ah(ah); |
| 862 | } |
| 863 | |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 864 | struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neighbour, |
| 865 | struct net_device *dev) |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 866 | { |
| 867 | struct ipoib_neigh *neigh; |
| 868 | |
| 869 | neigh = kmalloc(sizeof *neigh, GFP_ATOMIC); |
| 870 | if (!neigh) |
| 871 | return NULL; |
| 872 | |
| 873 | neigh->neighbour = neighbour; |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 874 | neigh->dev = dev; |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 875 | *to_ipoib_neigh(neighbour) = neigh; |
Roland Dreier | 82b3991 | 2006-12-12 14:48:18 -0800 | [diff] [blame] | 876 | skb_queue_head_init(&neigh->queue); |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 877 | ipoib_cm_set(neigh, NULL); |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 878 | |
| 879 | return neigh; |
| 880 | } |
| 881 | |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 882 | void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh) |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 883 | { |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 884 | struct sk_buff *skb; |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 885 | *to_ipoib_neigh(neigh->neighbour) = NULL; |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 886 | while ((skb = __skb_dequeue(&neigh->queue))) { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 887 | ++dev->stats.tx_dropped; |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 888 | dev_kfree_skb_any(skb); |
| 889 | } |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 890 | if (ipoib_cm_get(neigh)) |
| 891 | ipoib_cm_destroy_tx(ipoib_cm_get(neigh)); |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 892 | kfree(neigh); |
| 893 | } |
| 894 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | static int ipoib_neigh_setup_dev(struct net_device *dev, struct neigh_parms *parms) |
| 896 | { |
Alexey Kuznetsov | ecbb416 | 2007-03-24 12:52:16 -0700 | [diff] [blame] | 897 | parms->neigh_cleanup = ipoib_neigh_cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | |
| 899 | return 0; |
| 900 | } |
| 901 | |
| 902 | int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port) |
| 903 | { |
| 904 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 905 | |
| 906 | /* Allocate RX/TX "rings" to hold queued skbs */ |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 907 | priv->rx_ring = kzalloc(ipoib_recvq_size * sizeof *priv->rx_ring, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | GFP_KERNEL); |
| 909 | if (!priv->rx_ring) { |
| 910 | printk(KERN_WARNING "%s: failed to allocate RX ring (%d entries)\n", |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 911 | ca->name, ipoib_recvq_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | goto out; |
| 913 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | |
Roland Dreier | 10313cb | 2008-03-12 07:51:03 -0700 | [diff] [blame] | 915 | priv->tx_ring = vmalloc(ipoib_sendq_size * sizeof *priv->tx_ring); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | if (!priv->tx_ring) { |
| 917 | printk(KERN_WARNING "%s: failed to allocate TX ring (%d entries)\n", |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 918 | ca->name, ipoib_sendq_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | goto out_rx_ring_cleanup; |
| 920 | } |
Roland Dreier | 10313cb | 2008-03-12 07:51:03 -0700 | [diff] [blame] | 921 | memset(priv->tx_ring, 0, ipoib_sendq_size * sizeof *priv->tx_ring); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | |
Michael S. Tsirkin | 1b52496 | 2007-08-16 15:36:16 +0300 | [diff] [blame] | 923 | /* priv->tx_head, tx_tail & tx_outstanding are already 0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | |
| 925 | if (ipoib_ib_dev_init(dev, ca, port)) |
| 926 | goto out_tx_ring_cleanup; |
| 927 | |
| 928 | return 0; |
| 929 | |
| 930 | out_tx_ring_cleanup: |
Roland Dreier | 10313cb | 2008-03-12 07:51:03 -0700 | [diff] [blame] | 931 | vfree(priv->tx_ring); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | |
| 933 | out_rx_ring_cleanup: |
| 934 | kfree(priv->rx_ring); |
| 935 | |
| 936 | out: |
| 937 | return -ENOMEM; |
| 938 | } |
| 939 | |
| 940 | void ipoib_dev_cleanup(struct net_device *dev) |
| 941 | { |
| 942 | struct ipoib_dev_priv *priv = netdev_priv(dev), *cpriv, *tcpriv; |
| 943 | |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 944 | ipoib_delete_debug_files(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | |
| 946 | /* Delete any child interfaces first */ |
| 947 | list_for_each_entry_safe(cpriv, tcpriv, &priv->child_intfs, list) { |
| 948 | unregister_netdev(cpriv->dev); |
| 949 | ipoib_dev_cleanup(cpriv->dev); |
| 950 | free_netdev(cpriv->dev); |
| 951 | } |
| 952 | |
| 953 | ipoib_ib_dev_cleanup(dev); |
| 954 | |
Hal Rosenstock | 92a6b34 | 2005-08-13 20:50:27 -0700 | [diff] [blame] | 955 | kfree(priv->rx_ring); |
Roland Dreier | 10313cb | 2008-03-12 07:51:03 -0700 | [diff] [blame] | 956 | vfree(priv->tx_ring); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | |
Hal Rosenstock | 92a6b34 | 2005-08-13 20:50:27 -0700 | [diff] [blame] | 958 | priv->rx_ring = NULL; |
| 959 | priv->tx_ring = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | } |
| 961 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 962 | static const struct header_ops ipoib_header_ops = { |
| 963 | .create = ipoib_hard_header, |
| 964 | }; |
| 965 | |
Vladimir Sokolovsky | af40da8 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 966 | static int get_skb_hdr(struct sk_buff *skb, void **iphdr, |
| 967 | void **tcph, u64 *hdr_flags, void *priv) |
| 968 | { |
| 969 | unsigned int ip_len; |
| 970 | struct iphdr *iph; |
| 971 | |
| 972 | if (unlikely(skb->protocol != htons(ETH_P_IP))) |
| 973 | return -1; |
| 974 | |
| 975 | /* |
| 976 | * In the future we may add an else clause that verifies the |
| 977 | * checksum and allows devices which do not calculate checksum |
| 978 | * to use LRO. |
| 979 | */ |
| 980 | if (unlikely(skb->ip_summed != CHECKSUM_UNNECESSARY)) |
| 981 | return -1; |
| 982 | |
| 983 | /* Check for non-TCP packet */ |
| 984 | skb_reset_network_header(skb); |
| 985 | iph = ip_hdr(skb); |
| 986 | if (iph->protocol != IPPROTO_TCP) |
| 987 | return -1; |
| 988 | |
| 989 | ip_len = ip_hdrlen(skb); |
| 990 | skb_set_transport_header(skb, ip_len); |
| 991 | *tcph = tcp_hdr(skb); |
| 992 | |
| 993 | /* check if IP header and TCP header are complete */ |
| 994 | if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb)) |
| 995 | return -1; |
| 996 | |
| 997 | *hdr_flags = LRO_IPV4 | LRO_TCP; |
| 998 | *iphdr = iph; |
| 999 | |
| 1000 | return 0; |
| 1001 | } |
| 1002 | |
| 1003 | static void ipoib_lro_setup(struct ipoib_dev_priv *priv) |
| 1004 | { |
| 1005 | priv->lro.lro_mgr.max_aggr = lro_max_aggr; |
| 1006 | priv->lro.lro_mgr.max_desc = IPOIB_MAX_LRO_DESCRIPTORS; |
| 1007 | priv->lro.lro_mgr.lro_arr = priv->lro.lro_desc; |
| 1008 | priv->lro.lro_mgr.get_skb_header = get_skb_hdr; |
| 1009 | priv->lro.lro_mgr.features = LRO_F_NAPI; |
| 1010 | priv->lro.lro_mgr.dev = priv->dev; |
| 1011 | priv->lro.lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; |
| 1012 | } |
| 1013 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | static void ipoib_setup(struct net_device *dev) |
| 1015 | { |
| 1016 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 1017 | |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 1018 | dev->open = ipoib_open; |
| 1019 | dev->stop = ipoib_stop; |
| 1020 | dev->change_mtu = ipoib_change_mtu; |
| 1021 | dev->hard_start_xmit = ipoib_start_xmit; |
| 1022 | dev->tx_timeout = ipoib_timeout; |
| 1023 | dev->header_ops = &ipoib_header_ops; |
| 1024 | dev->set_multicast_list = ipoib_set_mcast_list; |
| 1025 | dev->neigh_setup = ipoib_neigh_setup_dev; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1026 | |
Eli Cohen | 82c24c1 | 2008-04-16 21:09:32 -0700 | [diff] [blame] | 1027 | ipoib_set_ethtool_ops(dev); |
| 1028 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1029 | netif_napi_add(dev, &priv->napi, ipoib_poll, 100); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 1031 | dev->watchdog_timeo = HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 1033 | dev->flags |= IFF_BROADCAST | IFF_MULTICAST; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | |
| 1035 | /* |
| 1036 | * We add in INFINIBAND_ALEN to allow for the destination |
| 1037 | * address "pseudoheader" for skbs without neighbour struct. |
| 1038 | */ |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 1039 | dev->hard_header_len = IPOIB_ENCAP_LEN + INFINIBAND_ALEN; |
| 1040 | dev->addr_len = INFINIBAND_ALEN; |
| 1041 | dev->type = ARPHRD_INFINIBAND; |
| 1042 | dev->tx_queue_len = ipoib_sendq_size * 2; |
Eli Cohen | eb14032f | 2008-01-30 18:30:46 +0200 | [diff] [blame] | 1043 | dev->features = (NETIF_F_VLAN_CHALLENGED | |
Eli Cohen | eb14032f | 2008-01-30 18:30:46 +0200 | [diff] [blame] | 1044 | NETIF_F_HIGHDMA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | memcpy(dev->broadcast, ipv4_bcast_addr, INFINIBAND_ALEN); |
| 1047 | |
| 1048 | netif_carrier_off(dev); |
| 1049 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | priv->dev = dev; |
| 1051 | |
Vladimir Sokolovsky | af40da8 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 1052 | ipoib_lro_setup(priv); |
| 1053 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | spin_lock_init(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1056 | mutex_init(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | |
| 1058 | INIT_LIST_HEAD(&priv->path_list); |
| 1059 | INIT_LIST_HEAD(&priv->child_intfs); |
| 1060 | INIT_LIST_HEAD(&priv->dead_ahs); |
| 1061 | INIT_LIST_HEAD(&priv->multicast_list); |
| 1062 | |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1063 | INIT_DELAYED_WORK(&priv->pkey_poll_task, ipoib_pkey_poll); |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1064 | INIT_DELAYED_WORK(&priv->mcast_task, ipoib_mcast_join_task); |
Yossi Etigin | e8224e4 | 2008-09-16 11:57:45 -0700 | [diff] [blame] | 1065 | INIT_WORK(&priv->carrier_on_task, ipoib_mcast_carrier_on_task); |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1066 | INIT_WORK(&priv->flush_light, ipoib_ib_dev_flush_light); |
| 1067 | INIT_WORK(&priv->flush_normal, ipoib_ib_dev_flush_normal); |
| 1068 | INIT_WORK(&priv->flush_heavy, ipoib_ib_dev_flush_heavy); |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1069 | INIT_WORK(&priv->restart_task, ipoib_mcast_restart_task); |
| 1070 | INIT_DELAYED_WORK(&priv->ah_reap_task, ipoib_reap_ah); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | } |
| 1072 | |
| 1073 | struct ipoib_dev_priv *ipoib_intf_alloc(const char *name) |
| 1074 | { |
| 1075 | struct net_device *dev; |
| 1076 | |
| 1077 | dev = alloc_netdev((int) sizeof (struct ipoib_dev_priv), name, |
| 1078 | ipoib_setup); |
| 1079 | if (!dev) |
| 1080 | return NULL; |
| 1081 | |
| 1082 | return netdev_priv(dev); |
| 1083 | } |
| 1084 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1085 | static ssize_t show_pkey(struct device *dev, |
| 1086 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1088 | struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | |
| 1090 | return sprintf(buf, "0x%04x\n", priv->pkey); |
| 1091 | } |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1092 | static DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | |
Or Gerlitz | 335a64a5a | 2007-10-08 10:13:00 +0200 | [diff] [blame] | 1094 | static ssize_t show_umcast(struct device *dev, |
| 1095 | struct device_attribute *attr, char *buf) |
| 1096 | { |
| 1097 | struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev)); |
| 1098 | |
| 1099 | return sprintf(buf, "%d\n", test_bit(IPOIB_FLAG_UMCAST, &priv->flags)); |
| 1100 | } |
| 1101 | |
| 1102 | static ssize_t set_umcast(struct device *dev, |
| 1103 | struct device_attribute *attr, |
| 1104 | const char *buf, size_t count) |
| 1105 | { |
| 1106 | struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev)); |
| 1107 | unsigned long umcast_val = simple_strtoul(buf, NULL, 0); |
| 1108 | |
| 1109 | if (umcast_val > 0) { |
| 1110 | set_bit(IPOIB_FLAG_UMCAST, &priv->flags); |
| 1111 | ipoib_warn(priv, "ignoring multicast groups joined directly " |
| 1112 | "by userspace\n"); |
| 1113 | } else |
| 1114 | clear_bit(IPOIB_FLAG_UMCAST, &priv->flags); |
| 1115 | |
| 1116 | return count; |
| 1117 | } |
| 1118 | static DEVICE_ATTR(umcast, S_IWUSR | S_IRUGO, show_umcast, set_umcast); |
| 1119 | |
| 1120 | int ipoib_add_umcast_attr(struct net_device *dev) |
| 1121 | { |
| 1122 | return device_create_file(&dev->dev, &dev_attr_umcast); |
| 1123 | } |
| 1124 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1125 | static ssize_t create_child(struct device *dev, |
| 1126 | struct device_attribute *attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | const char *buf, size_t count) |
| 1128 | { |
| 1129 | int pkey; |
| 1130 | int ret; |
| 1131 | |
| 1132 | if (sscanf(buf, "%i", &pkey) != 1) |
| 1133 | return -EINVAL; |
| 1134 | |
| 1135 | if (pkey < 0 || pkey > 0xffff) |
| 1136 | return -EINVAL; |
| 1137 | |
Roland Dreier | 4ce0593 | 2005-08-19 12:03:17 -0700 | [diff] [blame] | 1138 | /* |
| 1139 | * Set the full membership bit, so that we join the right |
| 1140 | * broadcast group, etc. |
| 1141 | */ |
| 1142 | pkey |= 0x8000; |
| 1143 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1144 | ret = ipoib_vlan_add(to_net_dev(dev), pkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | |
| 1146 | return ret ? ret : count; |
| 1147 | } |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1148 | static DEVICE_ATTR(create_child, S_IWUGO, NULL, create_child); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1150 | static ssize_t delete_child(struct device *dev, |
| 1151 | struct device_attribute *attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | const char *buf, size_t count) |
| 1153 | { |
| 1154 | int pkey; |
| 1155 | int ret; |
| 1156 | |
| 1157 | if (sscanf(buf, "%i", &pkey) != 1) |
| 1158 | return -EINVAL; |
| 1159 | |
| 1160 | if (pkey < 0 || pkey > 0xffff) |
| 1161 | return -EINVAL; |
| 1162 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1163 | ret = ipoib_vlan_delete(to_net_dev(dev), pkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | |
| 1165 | return ret ? ret : count; |
| 1166 | |
| 1167 | } |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1168 | static DEVICE_ATTR(delete_child, S_IWUGO, NULL, delete_child); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | |
| 1170 | int ipoib_add_pkey_attr(struct net_device *dev) |
| 1171 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1172 | return device_create_file(&dev->dev, &dev_attr_pkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | } |
| 1174 | |
Or Gerlitz | 83bb63f | 2008-10-22 15:49:49 -0700 | [diff] [blame] | 1175 | int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca) |
| 1176 | { |
| 1177 | struct ib_device_attr *device_attr; |
| 1178 | int result = -ENOMEM; |
| 1179 | |
| 1180 | device_attr = kmalloc(sizeof *device_attr, GFP_KERNEL); |
| 1181 | if (!device_attr) { |
| 1182 | printk(KERN_WARNING "%s: allocation of %zu bytes failed\n", |
| 1183 | hca->name, sizeof *device_attr); |
| 1184 | return result; |
| 1185 | } |
| 1186 | |
| 1187 | result = ib_query_device(hca, device_attr); |
| 1188 | if (result) { |
| 1189 | printk(KERN_WARNING "%s: ib_query_device failed (ret = %d)\n", |
| 1190 | hca->name, result); |
| 1191 | kfree(device_attr); |
| 1192 | return result; |
| 1193 | } |
| 1194 | priv->hca_caps = device_attr->device_cap_flags; |
| 1195 | |
| 1196 | kfree(device_attr); |
| 1197 | |
| 1198 | if (priv->hca_caps & IB_DEVICE_UD_IP_CSUM) { |
| 1199 | set_bit(IPOIB_FLAG_CSUM, &priv->flags); |
| 1200 | priv->dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM; |
| 1201 | } |
| 1202 | |
| 1203 | if (lro) |
| 1204 | priv->dev->features |= NETIF_F_LRO; |
| 1205 | |
| 1206 | if (priv->dev->features & NETIF_F_SG && priv->hca_caps & IB_DEVICE_UD_TSO) |
| 1207 | priv->dev->features |= NETIF_F_TSO; |
| 1208 | |
| 1209 | return 0; |
| 1210 | } |
| 1211 | |
| 1212 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | static struct net_device *ipoib_add_port(const char *format, |
| 1214 | struct ib_device *hca, u8 port) |
| 1215 | { |
| 1216 | struct ipoib_dev_priv *priv; |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 1217 | struct ib_port_attr attr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | int result = -ENOMEM; |
| 1219 | |
| 1220 | priv = ipoib_intf_alloc(format); |
| 1221 | if (!priv) |
| 1222 | goto alloc_mem_failed; |
| 1223 | |
| 1224 | SET_NETDEV_DEV(priv->dev, hca->dma_device); |
| 1225 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 1226 | if (!ib_query_port(hca, port, &attr)) |
| 1227 | priv->max_ib_mtu = ib_mtu_enum_to_int(attr.max_mtu); |
| 1228 | else { |
| 1229 | printk(KERN_WARNING "%s: ib_query_port %d failed\n", |
| 1230 | hca->name, port); |
| 1231 | goto device_init_failed; |
| 1232 | } |
| 1233 | |
| 1234 | /* MTU will be reset when mcast join happens */ |
| 1235 | priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu); |
| 1236 | priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu; |
| 1237 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | result = ib_query_pkey(hca, port, 0, &priv->pkey); |
| 1239 | if (result) { |
| 1240 | printk(KERN_WARNING "%s: ib_query_pkey port %d failed (ret = %d)\n", |
| 1241 | hca->name, port, result); |
Eli Cohen | ca6de17 | 2007-08-21 18:46:10 +0300 | [diff] [blame] | 1242 | goto device_init_failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | } |
| 1244 | |
Or Gerlitz | 83bb63f | 2008-10-22 15:49:49 -0700 | [diff] [blame] | 1245 | if (ipoib_set_dev_features(priv, hca)) |
Eli Cohen | 6046136 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1246 | goto device_init_failed; |
Vladimir Sokolovsky | af40da8 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 1247 | |
Roland Dreier | 4ce0593 | 2005-08-19 12:03:17 -0700 | [diff] [blame] | 1248 | /* |
| 1249 | * Set the full membership bit, so that we join the right |
| 1250 | * broadcast group, etc. |
| 1251 | */ |
| 1252 | priv->pkey |= 0x8000; |
| 1253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | priv->dev->broadcast[8] = priv->pkey >> 8; |
| 1255 | priv->dev->broadcast[9] = priv->pkey & 0xff; |
| 1256 | |
| 1257 | result = ib_query_gid(hca, port, 0, &priv->local_gid); |
| 1258 | if (result) { |
| 1259 | printk(KERN_WARNING "%s: ib_query_gid port %d failed (ret = %d)\n", |
| 1260 | hca->name, port, result); |
Eli Cohen | ca6de17 | 2007-08-21 18:46:10 +0300 | [diff] [blame] | 1261 | goto device_init_failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | } else |
| 1263 | memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); |
| 1264 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | result = ipoib_dev_init(priv->dev, hca, port); |
| 1266 | if (result < 0) { |
| 1267 | printk(KERN_WARNING "%s: failed to initialize port %d (ret = %d)\n", |
| 1268 | hca->name, port, result); |
| 1269 | goto device_init_failed; |
| 1270 | } |
| 1271 | |
| 1272 | INIT_IB_EVENT_HANDLER(&priv->event_handler, |
| 1273 | priv->ca, ipoib_event); |
| 1274 | result = ib_register_event_handler(&priv->event_handler); |
| 1275 | if (result < 0) { |
| 1276 | printk(KERN_WARNING "%s: ib_register_event_handler failed for " |
| 1277 | "port %d (ret = %d)\n", |
| 1278 | hca->name, port, result); |
| 1279 | goto event_failed; |
| 1280 | } |
| 1281 | |
| 1282 | result = register_netdev(priv->dev); |
| 1283 | if (result) { |
| 1284 | printk(KERN_WARNING "%s: couldn't register ipoib port %d; error %d\n", |
| 1285 | hca->name, port, result); |
| 1286 | goto register_failed; |
| 1287 | } |
| 1288 | |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 1289 | ipoib_create_debug_files(priv->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 1291 | if (ipoib_cm_add_mode_attr(priv->dev)) |
| 1292 | goto sysfs_failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | if (ipoib_add_pkey_attr(priv->dev)) |
| 1294 | goto sysfs_failed; |
Or Gerlitz | 335a64a5a | 2007-10-08 10:13:00 +0200 | [diff] [blame] | 1295 | if (ipoib_add_umcast_attr(priv->dev)) |
| 1296 | goto sysfs_failed; |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1297 | if (device_create_file(&priv->dev->dev, &dev_attr_create_child)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | goto sysfs_failed; |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1299 | if (device_create_file(&priv->dev->dev, &dev_attr_delete_child)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | goto sysfs_failed; |
| 1301 | |
| 1302 | return priv->dev; |
| 1303 | |
| 1304 | sysfs_failed: |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 1305 | ipoib_delete_debug_files(priv->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | unregister_netdev(priv->dev); |
| 1307 | |
| 1308 | register_failed: |
| 1309 | ib_unregister_event_handler(&priv->event_handler); |
Roland Dreier | a77a57a | 2008-08-19 15:01:32 -0700 | [diff] [blame] | 1310 | flush_workqueue(ipoib_workqueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | |
| 1312 | event_failed: |
| 1313 | ipoib_dev_cleanup(priv->dev); |
| 1314 | |
| 1315 | device_init_failed: |
| 1316 | free_netdev(priv->dev); |
| 1317 | |
| 1318 | alloc_mem_failed: |
| 1319 | return ERR_PTR(result); |
| 1320 | } |
| 1321 | |
| 1322 | static void ipoib_add_one(struct ib_device *device) |
| 1323 | { |
| 1324 | struct list_head *dev_list; |
| 1325 | struct net_device *dev; |
| 1326 | struct ipoib_dev_priv *priv; |
| 1327 | int s, e, p; |
| 1328 | |
Tom Tucker | 07ebafb | 2006-08-03 16:02:42 -0500 | [diff] [blame] | 1329 | if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB) |
| 1330 | return; |
| 1331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL); |
| 1333 | if (!dev_list) |
| 1334 | return; |
| 1335 | |
| 1336 | INIT_LIST_HEAD(dev_list); |
| 1337 | |
Tom Tucker | 07ebafb | 2006-08-03 16:02:42 -0500 | [diff] [blame] | 1338 | if (device->node_type == RDMA_NODE_IB_SWITCH) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | s = 0; |
| 1340 | e = 0; |
| 1341 | } else { |
| 1342 | s = 1; |
| 1343 | e = device->phys_port_cnt; |
| 1344 | } |
| 1345 | |
| 1346 | for (p = s; p <= e; ++p) { |
| 1347 | dev = ipoib_add_port("ib%d", device, p); |
| 1348 | if (!IS_ERR(dev)) { |
| 1349 | priv = netdev_priv(dev); |
| 1350 | list_add_tail(&priv->list, dev_list); |
| 1351 | } |
| 1352 | } |
| 1353 | |
| 1354 | ib_set_client_data(device, &ipoib_client, dev_list); |
| 1355 | } |
| 1356 | |
| 1357 | static void ipoib_remove_one(struct ib_device *device) |
| 1358 | { |
| 1359 | struct ipoib_dev_priv *priv, *tmp; |
| 1360 | struct list_head *dev_list; |
| 1361 | |
Tom Tucker | 07ebafb | 2006-08-03 16:02:42 -0500 | [diff] [blame] | 1362 | if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB) |
| 1363 | return; |
| 1364 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | dev_list = ib_get_client_data(device, &ipoib_client); |
| 1366 | |
| 1367 | list_for_each_entry_safe(priv, tmp, dev_list, list) { |
| 1368 | ib_unregister_event_handler(&priv->event_handler); |
Roland Dreier | a77a57a | 2008-08-19 15:01:32 -0700 | [diff] [blame] | 1369 | |
| 1370 | rtnl_lock(); |
| 1371 | dev_change_flags(priv->dev, priv->dev->flags & ~IFF_UP); |
| 1372 | rtnl_unlock(); |
| 1373 | |
| 1374 | flush_workqueue(ipoib_workqueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | |
| 1376 | unregister_netdev(priv->dev); |
| 1377 | ipoib_dev_cleanup(priv->dev); |
| 1378 | free_netdev(priv->dev); |
| 1379 | } |
Michael S. Tsirkin | 06c56e4 | 2005-09-01 09:19:02 -0700 | [diff] [blame] | 1380 | |
| 1381 | kfree(dev_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | } |
| 1383 | |
| 1384 | static int __init ipoib_init_module(void) |
| 1385 | { |
| 1386 | int ret; |
| 1387 | |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 1388 | ipoib_recvq_size = roundup_pow_of_two(ipoib_recvq_size); |
| 1389 | ipoib_recvq_size = min(ipoib_recvq_size, IPOIB_MAX_QUEUE_SIZE); |
| 1390 | ipoib_recvq_size = max(ipoib_recvq_size, IPOIB_MIN_QUEUE_SIZE); |
| 1391 | |
| 1392 | ipoib_sendq_size = roundup_pow_of_two(ipoib_sendq_size); |
| 1393 | ipoib_sendq_size = min(ipoib_sendq_size, IPOIB_MAX_QUEUE_SIZE); |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 1394 | ipoib_sendq_size = max(ipoib_sendq_size, max(2 * MAX_SEND_CQE, |
| 1395 | IPOIB_MIN_QUEUE_SIZE)); |
Pradeep Satyanarayana | 68e995a | 2008-01-25 14:15:24 -0800 | [diff] [blame] | 1396 | #ifdef CONFIG_INFINIBAND_IPOIB_CM |
| 1397 | ipoib_max_conn_qp = min(ipoib_max_conn_qp, IPOIB_CM_MAX_CONN_QP); |
| 1398 | #endif |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 1399 | |
Eli Cohen | f89271da | 2008-07-14 23:48:44 -0700 | [diff] [blame] | 1400 | /* |
| 1401 | * When copying small received packets, we only copy from the |
| 1402 | * linear data part of the SKB, so we rely on this condition. |
| 1403 | */ |
| 1404 | BUILD_BUG_ON(IPOIB_CM_COPYBREAK > IPOIB_CM_HEAD_SIZE); |
| 1405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | ret = ipoib_register_debugfs(); |
| 1407 | if (ret) |
| 1408 | return ret; |
| 1409 | |
| 1410 | /* |
| 1411 | * We create our own workqueue mainly because we want to be |
| 1412 | * able to flush it when devices are being removed. We can't |
| 1413 | * use schedule_work()/flush_scheduled_work() because both |
| 1414 | * unregister_netdev() and linkwatch_event take the rtnl lock, |
| 1415 | * so flush_scheduled_work() can deadlock during device |
| 1416 | * removal. |
| 1417 | */ |
| 1418 | ipoib_workqueue = create_singlethread_workqueue("ipoib"); |
| 1419 | if (!ipoib_workqueue) { |
| 1420 | ret = -ENOMEM; |
| 1421 | goto err_fs; |
| 1422 | } |
| 1423 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1424 | ib_sa_register_client(&ipoib_sa_client); |
| 1425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | ret = ib_register_client(&ipoib_client); |
| 1427 | if (ret) |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1428 | goto err_sa; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | |
| 1430 | return 0; |
| 1431 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1432 | err_sa: |
| 1433 | ib_sa_unregister_client(&ipoib_sa_client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | destroy_workqueue(ipoib_workqueue); |
| 1435 | |
Roland Dreier | 9adec1a | 2005-04-16 15:26:07 -0700 | [diff] [blame] | 1436 | err_fs: |
| 1437 | ipoib_unregister_debugfs(); |
| 1438 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | return ret; |
| 1440 | } |
| 1441 | |
| 1442 | static void __exit ipoib_cleanup_module(void) |
| 1443 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | ib_unregister_client(&ipoib_client); |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1445 | ib_sa_unregister_client(&ipoib_sa_client); |
Roland Dreier | 9adec1a | 2005-04-16 15:26:07 -0700 | [diff] [blame] | 1446 | ipoib_unregister_debugfs(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | destroy_workqueue(ipoib_workqueue); |
| 1448 | } |
| 1449 | |
| 1450 | module_init(ipoib_init_module); |
| 1451 | module_exit(ipoib_cleanup_module); |