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. |
| 33 | * |
| 34 | * $Id: ipoib_main.c 1377 2004-12-23 19:57:12Z roland $ |
| 35 | */ |
| 36 | |
| 37 | #include "ipoib.h" |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/module.h> |
| 40 | |
| 41 | #include <linux/init.h> |
| 42 | #include <linux/slab.h> |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 43 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
| 45 | #include <linux/if_arp.h> /* For ARPHRD_xxx */ |
| 46 | |
| 47 | #include <linux/ip.h> |
| 48 | #include <linux/in.h> |
| 49 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 50 | #include <net/dst.h> |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | MODULE_AUTHOR("Roland Dreier"); |
| 53 | MODULE_DESCRIPTION("IP-over-InfiniBand net driver"); |
| 54 | MODULE_LICENSE("Dual BSD/GPL"); |
| 55 | |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 56 | int ipoib_sendq_size __read_mostly = IPOIB_TX_RING_SIZE; |
| 57 | int ipoib_recvq_size __read_mostly = IPOIB_RX_RING_SIZE; |
| 58 | |
| 59 | module_param_named(send_queue_size, ipoib_sendq_size, int, 0444); |
| 60 | MODULE_PARM_DESC(send_queue_size, "Number of descriptors in send queue"); |
| 61 | module_param_named(recv_queue_size, ipoib_recvq_size, int, 0444); |
| 62 | MODULE_PARM_DESC(recv_queue_size, "Number of descriptors in receive queue"); |
| 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
| 65 | int ipoib_debug_level; |
| 66 | |
| 67 | module_param_named(debug_level, ipoib_debug_level, int, 0644); |
| 68 | MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0"); |
| 69 | #endif |
| 70 | |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 71 | struct ipoib_path_iter { |
| 72 | struct net_device *dev; |
| 73 | struct ipoib_path path; |
| 74 | }; |
| 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | static const u8 ipv4_bcast_addr[] = { |
| 77 | 0x00, 0xff, 0xff, 0xff, |
| 78 | 0xff, 0x12, 0x40, 0x1b, 0x00, 0x00, 0x00, 0x00, |
| 79 | 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff |
| 80 | }; |
| 81 | |
| 82 | struct workqueue_struct *ipoib_workqueue; |
| 83 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 84 | struct ib_sa_client ipoib_sa_client; |
| 85 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | static void ipoib_add_one(struct ib_device *device); |
| 87 | static void ipoib_remove_one(struct ib_device *device); |
| 88 | |
| 89 | static struct ib_client ipoib_client = { |
| 90 | .name = "ipoib", |
| 91 | .add = ipoib_add_one, |
| 92 | .remove = ipoib_remove_one |
| 93 | }; |
| 94 | |
| 95 | int ipoib_open(struct net_device *dev) |
| 96 | { |
| 97 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 98 | |
| 99 | ipoib_dbg(priv, "bringing up interface\n"); |
| 100 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 101 | napi_enable(&priv->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | set_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags); |
| 103 | |
| 104 | if (ipoib_pkey_dev_delay_open(dev)) |
| 105 | return 0; |
| 106 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 107 | if (ipoib_ib_dev_open(dev)) { |
| 108 | napi_disable(&priv->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | return -EINVAL; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 110 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
Roland Dreier | 267ee88 | 2005-11-29 10:55:58 -0800 | [diff] [blame] | 112 | if (ipoib_ib_dev_up(dev)) { |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 113 | ipoib_ib_dev_stop(dev, 1); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 114 | napi_disable(&priv->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | return -EINVAL; |
Roland Dreier | 267ee88 | 2005-11-29 10:55:58 -0800 | [diff] [blame] | 116 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
| 118 | if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { |
| 119 | struct ipoib_dev_priv *cpriv; |
| 120 | |
| 121 | /* Bring up any child interfaces too */ |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 122 | mutex_lock(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | list_for_each_entry(cpriv, &priv->child_intfs, list) { |
| 124 | int flags; |
| 125 | |
| 126 | flags = cpriv->dev->flags; |
| 127 | if (flags & IFF_UP) |
| 128 | continue; |
| 129 | |
| 130 | dev_change_flags(cpriv->dev, flags | IFF_UP); |
| 131 | } |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 132 | mutex_unlock(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | netif_start_queue(dev); |
| 136 | |
| 137 | return 0; |
| 138 | } |
| 139 | |
| 140 | static int ipoib_stop(struct net_device *dev) |
| 141 | { |
| 142 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 143 | |
| 144 | ipoib_dbg(priv, "stopping interface\n"); |
| 145 | |
| 146 | clear_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 147 | napi_disable(&priv->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
| 149 | netif_stop_queue(dev); |
| 150 | |
Jack Morgenstein | 0b3ea08 | 2006-03-20 10:08:24 -0800 | [diff] [blame] | 151 | /* |
| 152 | * Now flush workqueue to make sure a scheduled task doesn't |
| 153 | * bring our internal state back up. |
| 154 | */ |
| 155 | flush_workqueue(ipoib_workqueue); |
| 156 | |
| 157 | ipoib_ib_dev_down(dev, 1); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 158 | ipoib_ib_dev_stop(dev, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
| 160 | if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { |
| 161 | struct ipoib_dev_priv *cpriv; |
| 162 | |
| 163 | /* Bring down any child interfaces too */ |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 164 | mutex_lock(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | list_for_each_entry(cpriv, &priv->child_intfs, list) { |
| 166 | int flags; |
| 167 | |
| 168 | flags = cpriv->dev->flags; |
| 169 | if (!(flags & IFF_UP)) |
| 170 | continue; |
| 171 | |
| 172 | dev_change_flags(cpriv->dev, flags & ~IFF_UP); |
| 173 | } |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 174 | mutex_unlock(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static int ipoib_change_mtu(struct net_device *dev, int new_mtu) |
| 181 | { |
| 182 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 183 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 184 | /* dev->mtu > 2K ==> connected mode */ |
Pradeep Satyanarayana | 586a693 | 2007-12-21 13:08:23 -0800 | [diff] [blame] | 185 | if (ipoib_cm_admin_enabled(dev)) { |
| 186 | if (new_mtu > ipoib_cm_max_mtu(dev)) |
| 187 | return -EINVAL; |
| 188 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 189 | if (new_mtu > priv->mcast_mtu) |
| 190 | ipoib_warn(priv, "mtu > %d will cause multicast packet drops.\n", |
| 191 | priv->mcast_mtu); |
Pradeep Satyanarayana | 586a693 | 2007-12-21 13:08:23 -0800 | [diff] [blame] | 192 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 193 | dev->mtu = new_mtu; |
| 194 | return 0; |
| 195 | } |
| 196 | |
Pradeep Satyanarayana | 586a693 | 2007-12-21 13:08:23 -0800 | [diff] [blame] | 197 | if (new_mtu > IPOIB_PACKET_SIZE - IPOIB_ENCAP_LEN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | return -EINVAL; |
| 199 | |
| 200 | priv->admin_mtu = new_mtu; |
| 201 | |
| 202 | dev->mtu = min(priv->mcast_mtu, priv->admin_mtu); |
| 203 | |
| 204 | return 0; |
| 205 | } |
| 206 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 207 | static struct ipoib_path *__path_find(struct net_device *dev, void *gid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | { |
| 209 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 210 | struct rb_node *n = priv->path_tree.rb_node; |
| 211 | struct ipoib_path *path; |
| 212 | int ret; |
| 213 | |
| 214 | while (n) { |
| 215 | path = rb_entry(n, struct ipoib_path, rb_node); |
| 216 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 217 | ret = memcmp(gid, path->pathrec.dgid.raw, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | sizeof (union ib_gid)); |
| 219 | |
| 220 | if (ret < 0) |
| 221 | n = n->rb_left; |
| 222 | else if (ret > 0) |
| 223 | n = n->rb_right; |
| 224 | else |
| 225 | return path; |
| 226 | } |
| 227 | |
| 228 | return NULL; |
| 229 | } |
| 230 | |
| 231 | static int __path_add(struct net_device *dev, struct ipoib_path *path) |
| 232 | { |
| 233 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 234 | struct rb_node **n = &priv->path_tree.rb_node; |
| 235 | struct rb_node *pn = NULL; |
| 236 | struct ipoib_path *tpath; |
| 237 | int ret; |
| 238 | |
| 239 | while (*n) { |
| 240 | pn = *n; |
| 241 | tpath = rb_entry(pn, struct ipoib_path, rb_node); |
| 242 | |
| 243 | ret = memcmp(path->pathrec.dgid.raw, tpath->pathrec.dgid.raw, |
| 244 | sizeof (union ib_gid)); |
| 245 | if (ret < 0) |
| 246 | n = &pn->rb_left; |
| 247 | else if (ret > 0) |
| 248 | n = &pn->rb_right; |
| 249 | else |
| 250 | return -EEXIST; |
| 251 | } |
| 252 | |
| 253 | rb_link_node(&path->rb_node, pn, n); |
| 254 | rb_insert_color(&path->rb_node, &priv->path_tree); |
| 255 | |
| 256 | list_add_tail(&path->list, &priv->path_list); |
| 257 | |
| 258 | return 0; |
| 259 | } |
| 260 | |
| 261 | static void path_free(struct net_device *dev, struct ipoib_path *path) |
| 262 | { |
| 263 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 264 | struct ipoib_neigh *neigh, *tn; |
| 265 | struct sk_buff *skb; |
| 266 | unsigned long flags; |
| 267 | |
| 268 | while ((skb = __skb_dequeue(&path->queue))) |
| 269 | dev_kfree_skb_irq(skb); |
| 270 | |
| 271 | spin_lock_irqsave(&priv->lock, flags); |
| 272 | |
| 273 | list_for_each_entry_safe(neigh, tn, &path->neigh_list, list) { |
| 274 | /* |
| 275 | * It's safe to call ipoib_put_ah() inside priv->lock |
| 276 | * here, because we know that path->ah will always |
| 277 | * hold one more reference, so ipoib_put_ah() will |
| 278 | * never do more than decrement the ref count. |
| 279 | */ |
| 280 | if (neigh->ah) |
| 281 | ipoib_put_ah(neigh->ah); |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 282 | |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 283 | ipoib_neigh_free(dev, neigh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | spin_unlock_irqrestore(&priv->lock, flags); |
| 287 | |
| 288 | if (path->ah) |
| 289 | ipoib_put_ah(path->ah); |
| 290 | |
| 291 | kfree(path); |
| 292 | } |
| 293 | |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 294 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
| 295 | |
| 296 | struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev) |
| 297 | { |
| 298 | struct ipoib_path_iter *iter; |
| 299 | |
| 300 | iter = kmalloc(sizeof *iter, GFP_KERNEL); |
| 301 | if (!iter) |
| 302 | return NULL; |
| 303 | |
| 304 | iter->dev = dev; |
| 305 | memset(iter->path.pathrec.dgid.raw, 0, 16); |
| 306 | |
| 307 | if (ipoib_path_iter_next(iter)) { |
| 308 | kfree(iter); |
| 309 | return NULL; |
| 310 | } |
| 311 | |
| 312 | return iter; |
| 313 | } |
| 314 | |
| 315 | int ipoib_path_iter_next(struct ipoib_path_iter *iter) |
| 316 | { |
| 317 | struct ipoib_dev_priv *priv = netdev_priv(iter->dev); |
| 318 | struct rb_node *n; |
| 319 | struct ipoib_path *path; |
| 320 | int ret = 1; |
| 321 | |
| 322 | spin_lock_irq(&priv->lock); |
| 323 | |
| 324 | n = rb_first(&priv->path_tree); |
| 325 | |
| 326 | while (n) { |
| 327 | path = rb_entry(n, struct ipoib_path, rb_node); |
| 328 | |
| 329 | if (memcmp(iter->path.pathrec.dgid.raw, path->pathrec.dgid.raw, |
| 330 | sizeof (union ib_gid)) < 0) { |
| 331 | iter->path = *path; |
| 332 | ret = 0; |
| 333 | break; |
| 334 | } |
| 335 | |
| 336 | n = rb_next(n); |
| 337 | } |
| 338 | |
| 339 | spin_unlock_irq(&priv->lock); |
| 340 | |
| 341 | return ret; |
| 342 | } |
| 343 | |
| 344 | void ipoib_path_iter_read(struct ipoib_path_iter *iter, |
| 345 | struct ipoib_path *path) |
| 346 | { |
| 347 | *path = iter->path; |
| 348 | } |
| 349 | |
| 350 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ |
| 351 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | void ipoib_flush_paths(struct net_device *dev) |
| 353 | { |
| 354 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 355 | struct ipoib_path *path, *tp; |
| 356 | LIST_HEAD(remove_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | |
Michael S. Tsirkin | 9217b27 | 2006-08-03 22:16:06 +0300 | [diff] [blame] | 358 | spin_lock_irq(&priv->tx_lock); |
| 359 | spin_lock(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
| 361 | list_splice(&priv->path_list, &remove_list); |
| 362 | INIT_LIST_HEAD(&priv->path_list); |
| 363 | |
| 364 | list_for_each_entry(path, &remove_list, list) |
| 365 | rb_erase(&path->rb_node, &priv->path_tree); |
| 366 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | list_for_each_entry_safe(path, tp, &remove_list, list) { |
| 368 | if (path->query) |
| 369 | ib_sa_cancel_query(path->query_id, path->query); |
Michael S. Tsirkin | 9217b27 | 2006-08-03 22:16:06 +0300 | [diff] [blame] | 370 | spin_unlock(&priv->lock); |
| 371 | spin_unlock_irq(&priv->tx_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | wait_for_completion(&path->done); |
| 373 | path_free(dev, path); |
Michael S. Tsirkin | 9217b27 | 2006-08-03 22:16:06 +0300 | [diff] [blame] | 374 | spin_lock_irq(&priv->tx_lock); |
| 375 | spin_lock(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } |
Michael S. Tsirkin | 9217b27 | 2006-08-03 22:16:06 +0300 | [diff] [blame] | 377 | spin_unlock(&priv->lock); |
| 378 | spin_unlock_irq(&priv->tx_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | static void path_rec_completion(int status, |
| 382 | struct ib_sa_path_rec *pathrec, |
| 383 | void *path_ptr) |
| 384 | { |
| 385 | struct ipoib_path *path = path_ptr; |
| 386 | struct net_device *dev = path->dev; |
| 387 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 388 | struct ipoib_ah *ah = NULL; |
Michael S. Tsirkin | d04d01b | 2007-03-22 14:40:16 -0700 | [diff] [blame] | 389 | struct ipoib_neigh *neigh, *tn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | struct sk_buff_head skqueue; |
| 391 | struct sk_buff *skb; |
| 392 | unsigned long flags; |
| 393 | |
Roland Dreier | 843613b | 2007-02-26 12:57:08 -0800 | [diff] [blame] | 394 | if (!status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | ipoib_dbg(priv, "PathRec LID 0x%04x for GID " IPOIB_GID_FMT "\n", |
| 396 | be16_to_cpu(pathrec->dlid), IPOIB_GID_ARG(pathrec->dgid)); |
| 397 | else |
| 398 | ipoib_dbg(priv, "PathRec status %d for GID " IPOIB_GID_FMT "\n", |
| 399 | status, IPOIB_GID_ARG(path->pathrec.dgid)); |
| 400 | |
| 401 | skb_queue_head_init(&skqueue); |
| 402 | |
| 403 | if (!status) { |
Sean Hefty | 46f1b3d | 2007-04-05 11:50:11 -0700 | [diff] [blame] | 404 | struct ib_ah_attr av; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
Sean Hefty | 46f1b3d | 2007-04-05 11:50:11 -0700 | [diff] [blame] | 406 | if (!ib_init_ah_from_path(priv->ca, priv->port, pathrec, &av)) |
| 407 | ah = ipoib_create_ah(dev, priv->pd, &av); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | spin_lock_irqsave(&priv->lock, flags); |
| 411 | |
| 412 | path->ah = ah; |
| 413 | |
| 414 | if (ah) { |
| 415 | path->pathrec = *pathrec; |
| 416 | |
| 417 | ipoib_dbg(priv, "created address handle %p for LID 0x%04x, SL %d\n", |
| 418 | ah, be16_to_cpu(pathrec->dlid), pathrec->sl); |
| 419 | |
| 420 | while ((skb = __skb_dequeue(&path->queue))) |
| 421 | __skb_queue_tail(&skqueue, skb); |
| 422 | |
Michael S. Tsirkin | d04d01b | 2007-03-22 14:40:16 -0700 | [diff] [blame] | 423 | list_for_each_entry_safe(neigh, tn, &path->neigh_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | kref_get(&path->ah->ref); |
| 425 | neigh->ah = path->ah; |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 426 | memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw, |
| 427 | sizeof(union ib_gid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 429 | if (ipoib_cm_enabled(dev, neigh->neighbour)) { |
| 430 | if (!ipoib_cm_get(neigh)) |
| 431 | ipoib_cm_set(neigh, ipoib_cm_create_tx(dev, |
| 432 | path, |
| 433 | neigh)); |
| 434 | if (!ipoib_cm_get(neigh)) { |
| 435 | list_del(&neigh->list); |
| 436 | if (neigh->ah) |
| 437 | ipoib_put_ah(neigh->ah); |
| 438 | ipoib_neigh_free(dev, neigh); |
| 439 | continue; |
| 440 | } |
| 441 | } |
| 442 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | while ((skb = __skb_dequeue(&neigh->queue))) |
| 444 | __skb_queue_tail(&skqueue, skb); |
| 445 | } |
Roland Dreier | 5872a9f | 2005-11-29 10:13:54 -0800 | [diff] [blame] | 446 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | |
Roland Dreier | 5872a9f | 2005-11-29 10:13:54 -0800 | [diff] [blame] | 448 | path->query = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | complete(&path->done); |
| 450 | |
| 451 | spin_unlock_irqrestore(&priv->lock, flags); |
| 452 | |
| 453 | while ((skb = __skb_dequeue(&skqueue))) { |
| 454 | skb->dev = dev; |
| 455 | if (dev_queue_xmit(skb)) |
| 456 | ipoib_warn(priv, "dev_queue_xmit failed " |
| 457 | "to requeue packet\n"); |
| 458 | } |
| 459 | } |
| 460 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 461 | 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] | 462 | { |
| 463 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 464 | struct ipoib_path *path; |
| 465 | |
Jack Morgenstein | 1401b53 | 2007-11-26 10:41:19 +0200 | [diff] [blame] | 466 | if (!priv->broadcast) |
| 467 | return NULL; |
| 468 | |
Roland Dreier | 21a3848 | 2005-11-02 10:07:59 -0800 | [diff] [blame] | 469 | path = kzalloc(sizeof *path, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | if (!path) |
| 471 | return NULL; |
| 472 | |
Roland Dreier | 21a3848 | 2005-11-02 10:07:59 -0800 | [diff] [blame] | 473 | path->dev = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | skb_queue_head_init(&path->queue); |
| 476 | |
| 477 | INIT_LIST_HEAD(&path->neigh_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 479 | memcpy(path->pathrec.dgid.raw, gid, sizeof (union ib_gid)); |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 480 | path->pathrec.sgid = priv->local_gid; |
| 481 | path->pathrec.pkey = cpu_to_be16(priv->pkey); |
Sean Hefty | 8166883 | 2007-08-02 12:21:31 -0700 | [diff] [blame] | 482 | path->pathrec.numb_path = 1; |
| 483 | path->pathrec.traffic_class = priv->broadcast->mcmember.traffic_class; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | |
| 485 | return path; |
| 486 | } |
| 487 | |
| 488 | static int path_rec_start(struct net_device *dev, |
| 489 | struct ipoib_path *path) |
| 490 | { |
| 491 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 492 | |
| 493 | ipoib_dbg(priv, "Start path record lookup for " IPOIB_GID_FMT "\n", |
| 494 | IPOIB_GID_ARG(path->pathrec.dgid)); |
| 495 | |
Roland Dreier | 65c7edd | 2005-11-28 21:20:34 -0800 | [diff] [blame] | 496 | init_completion(&path->done); |
| 497 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | path->query_id = |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 499 | ib_sa_path_rec_get(&ipoib_sa_client, priv->ca, priv->port, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | &path->pathrec, |
| 501 | IB_SA_PATH_REC_DGID | |
| 502 | IB_SA_PATH_REC_SGID | |
| 503 | IB_SA_PATH_REC_NUMB_PATH | |
Sean Hefty | 8166883 | 2007-08-02 12:21:31 -0700 | [diff] [blame] | 504 | IB_SA_PATH_REC_TRAFFIC_CLASS | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | IB_SA_PATH_REC_PKEY, |
| 506 | 1000, GFP_ATOMIC, |
| 507 | path_rec_completion, |
| 508 | path, &path->query); |
| 509 | if (path->query_id < 0) { |
| 510 | ipoib_warn(priv, "ib_sa_path_rec_get failed\n"); |
| 511 | path->query = NULL; |
| 512 | return path->query_id; |
| 513 | } |
| 514 | |
| 515 | return 0; |
| 516 | } |
| 517 | |
| 518 | static void neigh_add_path(struct sk_buff *skb, struct net_device *dev) |
| 519 | { |
| 520 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 521 | struct ipoib_path *path; |
| 522 | struct ipoib_neigh *neigh; |
| 523 | |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 524 | neigh = ipoib_neigh_alloc(skb->dst->neighbour, skb->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | if (!neigh) { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 526 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | dev_kfree_skb_any(skb); |
| 528 | return; |
| 529 | } |
| 530 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | /* |
| 532 | * We can only be called from ipoib_start_xmit, so we're |
| 533 | * inside tx_lock -- no need to save/restore flags. |
| 534 | */ |
| 535 | spin_lock(&priv->lock); |
| 536 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 537 | path = __path_find(dev, skb->dst->neighbour->ha + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | if (!path) { |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 539 | path = path_rec_create(dev, skb->dst->neighbour->ha + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | if (!path) |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 541 | goto err_path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | |
| 543 | __path_add(dev, path); |
| 544 | } |
| 545 | |
| 546 | list_add_tail(&neigh->list, &path->neigh_list); |
| 547 | |
Michael S. Tsirkin | 47f7a07 | 2006-01-17 09:22:05 -0800 | [diff] [blame] | 548 | if (path->ah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | kref_get(&path->ah->ref); |
| 550 | neigh->ah = path->ah; |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 551 | memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw, |
| 552 | sizeof(union ib_gid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 554 | if (ipoib_cm_enabled(dev, neigh->neighbour)) { |
| 555 | if (!ipoib_cm_get(neigh)) |
| 556 | ipoib_cm_set(neigh, ipoib_cm_create_tx(dev, path, neigh)); |
| 557 | if (!ipoib_cm_get(neigh)) { |
| 558 | list_del(&neigh->list); |
| 559 | if (neigh->ah) |
| 560 | ipoib_put_ah(neigh->ah); |
| 561 | ipoib_neigh_free(dev, neigh); |
| 562 | goto err_drop; |
| 563 | } |
| 564 | if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) |
| 565 | __skb_queue_tail(&neigh->queue, skb); |
| 566 | else { |
| 567 | ipoib_warn(priv, "queue length limit %d. Packet drop.\n", |
| 568 | skb_queue_len(&neigh->queue)); |
| 569 | goto err_drop; |
| 570 | } |
| 571 | } else |
| 572 | ipoib_send(dev, skb, path->ah, IPOIB_QPN(skb->dst->neighbour->ha)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | } else { |
| 574 | neigh->ah = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | |
| 576 | if (!path->query && path_rec_start(dev, path)) |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 577 | goto err_list; |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 578 | |
| 579 | __skb_queue_tail(&neigh->queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | } |
| 581 | |
| 582 | spin_unlock(&priv->lock); |
| 583 | return; |
| 584 | |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 585 | err_list: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | list_del(&neigh->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 588 | err_path: |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 589 | ipoib_neigh_free(dev, neigh); |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 590 | err_drop: |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 591 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | dev_kfree_skb_any(skb); |
| 593 | |
| 594 | spin_unlock(&priv->lock); |
| 595 | } |
| 596 | |
Roland Dreier | d70ed60 | 2005-09-28 19:56:57 -0700 | [diff] [blame] | 597 | 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] | 598 | { |
| 599 | struct ipoib_dev_priv *priv = netdev_priv(skb->dev); |
| 600 | |
| 601 | /* Look up path record for unicasts */ |
| 602 | if (skb->dst->neighbour->ha[4] != 0xff) { |
| 603 | neigh_add_path(skb, dev); |
| 604 | return; |
| 605 | } |
| 606 | |
| 607 | /* Add in the P_Key for multicasts */ |
| 608 | skb->dst->neighbour->ha[8] = (priv->pkey >> 8) & 0xff; |
| 609 | skb->dst->neighbour->ha[9] = priv->pkey & 0xff; |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 610 | ipoib_mcast_send(dev, skb->dst->neighbour->ha + 4, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev, |
| 614 | struct ipoib_pseudoheader *phdr) |
| 615 | { |
| 616 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 617 | struct ipoib_path *path; |
| 618 | |
| 619 | /* |
| 620 | * We can only be called from ipoib_start_xmit, so we're |
| 621 | * inside tx_lock -- no need to save/restore flags. |
| 622 | */ |
| 623 | spin_lock(&priv->lock); |
| 624 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 625 | path = __path_find(dev, phdr->hwaddr + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | if (!path) { |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 627 | path = path_rec_create(dev, phdr->hwaddr + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | if (path) { |
| 629 | /* put pseudoheader back on for next time */ |
| 630 | skb_push(skb, sizeof *phdr); |
| 631 | __skb_queue_tail(&path->queue, skb); |
| 632 | |
| 633 | if (path_rec_start(dev, path)) { |
| 634 | spin_unlock(&priv->lock); |
| 635 | path_free(dev, path); |
| 636 | return; |
| 637 | } else |
| 638 | __path_add(dev, path); |
| 639 | } else { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 640 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | dev_kfree_skb_any(skb); |
| 642 | } |
| 643 | |
| 644 | spin_unlock(&priv->lock); |
| 645 | return; |
| 646 | } |
| 647 | |
Michael S. Tsirkin | 47f7a07 | 2006-01-17 09:22:05 -0800 | [diff] [blame] | 648 | if (path->ah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | ipoib_dbg(priv, "Send unicast ARP to %04x\n", |
| 650 | be16_to_cpu(path->pathrec.dlid)); |
| 651 | |
Michael S. Tsirkin | 073ae84 | 2006-11-16 10:59:12 +0200 | [diff] [blame] | 652 | ipoib_send(dev, skb, path->ah, IPOIB_QPN(phdr->hwaddr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | } else if ((path->query || !path_rec_start(dev, path)) && |
| 654 | skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) { |
| 655 | /* put pseudoheader back on for next time */ |
| 656 | skb_push(skb, sizeof *phdr); |
| 657 | __skb_queue_tail(&path->queue, skb); |
| 658 | } else { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 659 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | dev_kfree_skb_any(skb); |
| 661 | } |
| 662 | |
| 663 | spin_unlock(&priv->lock); |
| 664 | } |
| 665 | |
| 666 | static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 667 | { |
| 668 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 669 | struct ipoib_neigh *neigh; |
| 670 | unsigned long flags; |
| 671 | |
Eli Cohen | a8bfca0 | 2006-09-22 15:22:58 -0700 | [diff] [blame] | 672 | if (unlikely(!spin_trylock_irqsave(&priv->tx_lock, flags))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | return NETDEV_TX_LOCKED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | |
Eli Cohen | a8bfca0 | 2006-09-22 15:22:58 -0700 | [diff] [blame] | 675 | if (likely(skb->dst && skb->dst->neighbour)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | if (unlikely(!*to_ipoib_neigh(skb->dst->neighbour))) { |
Roland Dreier | d70ed60 | 2005-09-28 19:56:57 -0700 | [diff] [blame] | 677 | ipoib_path_lookup(skb, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | goto out; |
| 679 | } |
| 680 | |
| 681 | neigh = *to_ipoib_neigh(skb->dst->neighbour); |
| 682 | |
Or Gerlitz | bafff97 | 2008-01-17 17:03:45 +0200 | [diff] [blame] | 683 | if (neigh->ah) |
Moni Shoua | 200d171 | 2007-10-09 19:43:37 -0700 | [diff] [blame] | 684 | if (unlikely((memcmp(&neigh->dgid.raw, |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 685 | skb->dst->neighbour->ha + 4, |
Moni Shoua | 200d171 | 2007-10-09 19:43:37 -0700 | [diff] [blame] | 686 | sizeof(union ib_gid))) || |
| 687 | (neigh->dev != dev))) { |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 688 | spin_lock(&priv->lock); |
| 689 | /* |
| 690 | * It's safe to call ipoib_put_ah() inside |
| 691 | * priv->lock here, because we know that |
| 692 | * path->ah will always hold one more reference, |
| 693 | * so ipoib_put_ah() will never do more than |
| 694 | * decrement the ref count. |
| 695 | */ |
| 696 | ipoib_put_ah(neigh->ah); |
| 697 | list_del(&neigh->list); |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 698 | ipoib_neigh_free(dev, neigh); |
Michael S. Tsirkin | 8a7f752 | 2006-07-19 17:44:37 +0300 | [diff] [blame] | 699 | spin_unlock(&priv->lock); |
| 700 | ipoib_path_lookup(skb, dev); |
| 701 | goto out; |
| 702 | } |
| 703 | |
Or Gerlitz | bafff97 | 2008-01-17 17:03:45 +0200 | [diff] [blame] | 704 | if (ipoib_cm_get(neigh)) { |
| 705 | if (ipoib_cm_up(neigh)) { |
| 706 | ipoib_cm_send(dev, skb, ipoib_cm_get(neigh)); |
| 707 | goto out; |
| 708 | } |
| 709 | } else if (neigh->ah) { |
Michael S. Tsirkin | 073ae84 | 2006-11-16 10:59:12 +0200 | [diff] [blame] | 710 | ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(skb->dst->neighbour->ha)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | goto out; |
| 712 | } |
| 713 | |
| 714 | if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) { |
| 715 | spin_lock(&priv->lock); |
| 716 | __skb_queue_tail(&neigh->queue, skb); |
| 717 | spin_unlock(&priv->lock); |
| 718 | } else { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 719 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | dev_kfree_skb_any(skb); |
| 721 | } |
| 722 | } else { |
| 723 | struct ipoib_pseudoheader *phdr = |
| 724 | (struct ipoib_pseudoheader *) skb->data; |
| 725 | skb_pull(skb, sizeof *phdr); |
| 726 | |
| 727 | if (phdr->hwaddr[4] == 0xff) { |
| 728 | /* Add in the P_Key for multicast*/ |
| 729 | phdr->hwaddr[8] = (priv->pkey >> 8) & 0xff; |
| 730 | phdr->hwaddr[9] = priv->pkey & 0xff; |
| 731 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 732 | ipoib_mcast_send(dev, phdr->hwaddr + 4, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | } else { |
Hal Rosenstock | 0dca0f7 | 2005-07-28 13:17:26 -0700 | [diff] [blame] | 734 | /* unicast GID -- should be ARP or RARP reply */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | |
Hal Rosenstock | 0dca0f7 | 2005-07-28 13:17:26 -0700 | [diff] [blame] | 736 | if ((be16_to_cpup((__be16 *) skb->data) != ETH_P_ARP) && |
| 737 | (be16_to_cpup((__be16 *) skb->data) != ETH_P_RARP)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | ipoib_warn(priv, "Unicast, no %s: type %04x, QPN %06x " |
| 739 | IPOIB_GID_FMT "\n", |
| 740 | skb->dst ? "neigh" : "dst", |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 741 | be16_to_cpup((__be16 *) skb->data), |
Michael S. Tsirkin | 073ae84 | 2006-11-16 10:59:12 +0200 | [diff] [blame] | 742 | IPOIB_QPN(phdr->hwaddr), |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 743 | IPOIB_GID_RAW_ARG(phdr->hwaddr + 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | dev_kfree_skb_any(skb); |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 745 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | goto out; |
| 747 | } |
| 748 | |
| 749 | unicast_arp_send(skb, dev, phdr); |
| 750 | } |
| 751 | } |
| 752 | |
| 753 | out: |
| 754 | spin_unlock_irqrestore(&priv->tx_lock, flags); |
| 755 | |
| 756 | return NETDEV_TX_OK; |
| 757 | } |
| 758 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | static void ipoib_timeout(struct net_device *dev) |
| 760 | { |
| 761 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 762 | |
Roland Dreier | 4b2d319 | 2005-10-18 12:20:06 -0700 | [diff] [blame] | 763 | ipoib_warn(priv, "transmit timeout: latency %d msecs\n", |
| 764 | jiffies_to_msecs(jiffies - dev->trans_start)); |
| 765 | ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n", |
| 766 | netif_queue_stopped(dev), |
| 767 | priv->tx_head, priv->tx_tail); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | /* XXX reset QP, etc. */ |
| 769 | } |
| 770 | |
| 771 | static int ipoib_hard_header(struct sk_buff *skb, |
| 772 | struct net_device *dev, |
| 773 | unsigned short type, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 774 | const void *daddr, const void *saddr, unsigned len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | { |
| 776 | struct ipoib_header *header; |
| 777 | |
| 778 | header = (struct ipoib_header *) skb_push(skb, sizeof *header); |
| 779 | |
| 780 | header->proto = htons(type); |
| 781 | header->reserved = 0; |
| 782 | |
| 783 | /* |
| 784 | * If we don't have a neighbour structure, stuff the |
| 785 | * destination address onto the front of the skb so we can |
| 786 | * figure out where to send the packet later. |
| 787 | */ |
Roland Dreier | ef12d45 | 2006-03-29 09:36:46 -0800 | [diff] [blame] | 788 | if ((!skb->dst || !skb->dst->neighbour) && daddr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | struct ipoib_pseudoheader *phdr = |
| 790 | (struct ipoib_pseudoheader *) skb_push(skb, sizeof *phdr); |
| 791 | memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN); |
| 792 | } |
| 793 | |
| 794 | return 0; |
| 795 | } |
| 796 | |
| 797 | static void ipoib_set_mcast_list(struct net_device *dev) |
| 798 | { |
| 799 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 800 | |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 801 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) { |
| 802 | ipoib_dbg(priv, "IPOIB_FLAG_OPER_UP not set"); |
| 803 | return; |
| 804 | } |
| 805 | |
Michael S. Tsirkin | 1ad62a1 | 2005-08-24 14:41:51 -0700 | [diff] [blame] | 806 | queue_work(ipoib_workqueue, &priv->restart_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | } |
| 808 | |
Alexey Kuznetsov | ecbb416 | 2007-03-24 12:52:16 -0700 | [diff] [blame] | 809 | static void ipoib_neigh_cleanup(struct neighbour *n) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | { |
| 811 | struct ipoib_neigh *neigh; |
| 812 | struct ipoib_dev_priv *priv = netdev_priv(n->dev); |
| 813 | unsigned long flags; |
| 814 | struct ipoib_ah *ah = NULL; |
| 815 | |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 816 | neigh = *to_ipoib_neigh(n); |
Or Gerlitz | 7bc531d | 2008-01-29 12:57:56 +0200 | [diff] [blame] | 817 | if (neigh) |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 818 | priv = netdev_priv(neigh->dev); |
Or Gerlitz | 7bc531d | 2008-01-29 12:57:56 +0200 | [diff] [blame] | 819 | else |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 820 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | ipoib_dbg(priv, |
Alexey Kuznetsov | ecbb416 | 2007-03-24 12:52:16 -0700 | [diff] [blame] | 822 | "neigh_cleanup for %06x " IPOIB_GID_FMT "\n", |
Michael S. Tsirkin | 073ae84 | 2006-11-16 10:59:12 +0200 | [diff] [blame] | 823 | IPOIB_QPN(n->ha), |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 824 | IPOIB_GID_RAW_ARG(n->ha + 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | |
| 826 | spin_lock_irqsave(&priv->lock, flags); |
| 827 | |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 828 | if (neigh->ah) |
| 829 | ah = neigh->ah; |
| 830 | list_del(&neigh->list); |
| 831 | ipoib_neigh_free(n->dev, neigh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | |
| 833 | spin_unlock_irqrestore(&priv->lock, flags); |
| 834 | |
| 835 | if (ah) |
| 836 | ipoib_put_ah(ah); |
| 837 | } |
| 838 | |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 839 | struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neighbour, |
| 840 | struct net_device *dev) |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 841 | { |
| 842 | struct ipoib_neigh *neigh; |
| 843 | |
| 844 | neigh = kmalloc(sizeof *neigh, GFP_ATOMIC); |
| 845 | if (!neigh) |
| 846 | return NULL; |
| 847 | |
| 848 | neigh->neighbour = neighbour; |
Moni Shoua | 732a217 | 2007-10-09 19:43:36 -0700 | [diff] [blame] | 849 | neigh->dev = dev; |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 850 | *to_ipoib_neigh(neighbour) = neigh; |
Roland Dreier | 82b3991 | 2006-12-12 14:48:18 -0800 | [diff] [blame] | 851 | skb_queue_head_init(&neigh->queue); |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 852 | ipoib_cm_set(neigh, NULL); |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 853 | |
| 854 | return neigh; |
| 855 | } |
| 856 | |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 857 | 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] | 858 | { |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 859 | struct sk_buff *skb; |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 860 | *to_ipoib_neigh(neigh->neighbour) = NULL; |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 861 | while ((skb = __skb_dequeue(&neigh->queue))) { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 862 | ++dev->stats.tx_dropped; |
Michael S. Tsirkin | 2745b5b | 2006-11-16 14:16:47 +0200 | [diff] [blame] | 863 | dev_kfree_skb_any(skb); |
| 864 | } |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 865 | if (ipoib_cm_get(neigh)) |
| 866 | ipoib_cm_destroy_tx(ipoib_cm_get(neigh)); |
Michael S. Tsirkin | d2e0655 | 2006-04-04 19:59:40 +0300 | [diff] [blame] | 867 | kfree(neigh); |
| 868 | } |
| 869 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | static int ipoib_neigh_setup_dev(struct net_device *dev, struct neigh_parms *parms) |
| 871 | { |
Alexey Kuznetsov | ecbb416 | 2007-03-24 12:52:16 -0700 | [diff] [blame] | 872 | parms->neigh_cleanup = ipoib_neigh_cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | |
| 874 | return 0; |
| 875 | } |
| 876 | |
| 877 | int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port) |
| 878 | { |
| 879 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 880 | |
| 881 | /* Allocate RX/TX "rings" to hold queued skbs */ |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 882 | priv->rx_ring = kzalloc(ipoib_recvq_size * sizeof *priv->rx_ring, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | GFP_KERNEL); |
| 884 | if (!priv->rx_ring) { |
| 885 | printk(KERN_WARNING "%s: failed to allocate RX ring (%d entries)\n", |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 886 | ca->name, ipoib_recvq_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | goto out; |
| 888 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 890 | priv->tx_ring = kzalloc(ipoib_sendq_size * sizeof *priv->tx_ring, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | GFP_KERNEL); |
| 892 | if (!priv->tx_ring) { |
| 893 | printk(KERN_WARNING "%s: failed to allocate TX ring (%d entries)\n", |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 894 | ca->name, ipoib_sendq_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | goto out_rx_ring_cleanup; |
| 896 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | |
Michael S. Tsirkin | 1b52496 | 2007-08-16 15:36:16 +0300 | [diff] [blame] | 898 | /* priv->tx_head, tx_tail & tx_outstanding are already 0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | |
| 900 | if (ipoib_ib_dev_init(dev, ca, port)) |
| 901 | goto out_tx_ring_cleanup; |
| 902 | |
| 903 | return 0; |
| 904 | |
| 905 | out_tx_ring_cleanup: |
| 906 | kfree(priv->tx_ring); |
| 907 | |
| 908 | out_rx_ring_cleanup: |
| 909 | kfree(priv->rx_ring); |
| 910 | |
| 911 | out: |
| 912 | return -ENOMEM; |
| 913 | } |
| 914 | |
| 915 | void ipoib_dev_cleanup(struct net_device *dev) |
| 916 | { |
| 917 | struct ipoib_dev_priv *priv = netdev_priv(dev), *cpriv, *tcpriv; |
| 918 | |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 919 | ipoib_delete_debug_files(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | |
| 921 | /* Delete any child interfaces first */ |
| 922 | list_for_each_entry_safe(cpriv, tcpriv, &priv->child_intfs, list) { |
| 923 | unregister_netdev(cpriv->dev); |
| 924 | ipoib_dev_cleanup(cpriv->dev); |
| 925 | free_netdev(cpriv->dev); |
| 926 | } |
| 927 | |
| 928 | ipoib_ib_dev_cleanup(dev); |
| 929 | |
Hal Rosenstock | 92a6b34 | 2005-08-13 20:50:27 -0700 | [diff] [blame] | 930 | kfree(priv->rx_ring); |
| 931 | kfree(priv->tx_ring); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | |
Hal Rosenstock | 92a6b34 | 2005-08-13 20:50:27 -0700 | [diff] [blame] | 933 | priv->rx_ring = NULL; |
| 934 | priv->tx_ring = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | } |
| 936 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 937 | static const struct header_ops ipoib_header_ops = { |
| 938 | .create = ipoib_hard_header, |
| 939 | }; |
| 940 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | static void ipoib_setup(struct net_device *dev) |
| 942 | { |
| 943 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 944 | |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 945 | dev->open = ipoib_open; |
| 946 | dev->stop = ipoib_stop; |
| 947 | dev->change_mtu = ipoib_change_mtu; |
| 948 | dev->hard_start_xmit = ipoib_start_xmit; |
| 949 | dev->tx_timeout = ipoib_timeout; |
| 950 | dev->header_ops = &ipoib_header_ops; |
| 951 | dev->set_multicast_list = ipoib_set_mcast_list; |
| 952 | dev->neigh_setup = ipoib_neigh_setup_dev; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 953 | |
| 954 | netif_napi_add(dev, &priv->napi, ipoib_poll, 100); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 956 | dev->watchdog_timeo = HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 958 | dev->flags |= IFF_BROADCAST | IFF_MULTICAST; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
| 960 | /* |
| 961 | * We add in INFINIBAND_ALEN to allow for the destination |
| 962 | * address "pseudoheader" for skbs without neighbour struct. |
| 963 | */ |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 964 | dev->hard_header_len = IPOIB_ENCAP_LEN + INFINIBAND_ALEN; |
| 965 | dev->addr_len = INFINIBAND_ALEN; |
| 966 | dev->type = ARPHRD_INFINIBAND; |
| 967 | dev->tx_queue_len = ipoib_sendq_size * 2; |
| 968 | dev->features = NETIF_F_VLAN_CHALLENGED | NETIF_F_LLTX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | |
| 970 | /* MTU will be reset when mcast join happens */ |
Roland Dreier | 2337f80 | 2007-10-23 19:57:54 -0700 | [diff] [blame] | 971 | dev->mtu = IPOIB_PACKET_SIZE - IPOIB_ENCAP_LEN; |
| 972 | priv->mcast_mtu = priv->admin_mtu = dev->mtu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | |
| 974 | memcpy(dev->broadcast, ipv4_bcast_addr, INFINIBAND_ALEN); |
| 975 | |
| 976 | netif_carrier_off(dev); |
| 977 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | priv->dev = dev; |
| 979 | |
| 980 | spin_lock_init(&priv->lock); |
| 981 | spin_lock_init(&priv->tx_lock); |
| 982 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 983 | mutex_init(&priv->mcast_mutex); |
| 984 | mutex_init(&priv->vlan_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | |
| 986 | INIT_LIST_HEAD(&priv->path_list); |
| 987 | INIT_LIST_HEAD(&priv->child_intfs); |
| 988 | INIT_LIST_HEAD(&priv->dead_ahs); |
| 989 | INIT_LIST_HEAD(&priv->multicast_list); |
| 990 | |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 991 | INIT_DELAYED_WORK(&priv->pkey_poll_task, ipoib_pkey_poll); |
| 992 | INIT_WORK(&priv->pkey_event_task, ipoib_pkey_event); |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 993 | INIT_DELAYED_WORK(&priv->mcast_task, ipoib_mcast_join_task); |
| 994 | INIT_WORK(&priv->flush_task, ipoib_ib_dev_flush); |
| 995 | INIT_WORK(&priv->restart_task, ipoib_mcast_restart_task); |
| 996 | INIT_DELAYED_WORK(&priv->ah_reap_task, ipoib_reap_ah); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | } |
| 998 | |
| 999 | struct ipoib_dev_priv *ipoib_intf_alloc(const char *name) |
| 1000 | { |
| 1001 | struct net_device *dev; |
| 1002 | |
| 1003 | dev = alloc_netdev((int) sizeof (struct ipoib_dev_priv), name, |
| 1004 | ipoib_setup); |
| 1005 | if (!dev) |
| 1006 | return NULL; |
| 1007 | |
| 1008 | return netdev_priv(dev); |
| 1009 | } |
| 1010 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1011 | static ssize_t show_pkey(struct device *dev, |
| 1012 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1014 | struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | |
| 1016 | return sprintf(buf, "0x%04x\n", priv->pkey); |
| 1017 | } |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1018 | static DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | |
Or Gerlitz | 335a64a5a | 2007-10-08 10:13:00 +0200 | [diff] [blame] | 1020 | static ssize_t show_umcast(struct device *dev, |
| 1021 | struct device_attribute *attr, char *buf) |
| 1022 | { |
| 1023 | struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev)); |
| 1024 | |
| 1025 | return sprintf(buf, "%d\n", test_bit(IPOIB_FLAG_UMCAST, &priv->flags)); |
| 1026 | } |
| 1027 | |
| 1028 | static ssize_t set_umcast(struct device *dev, |
| 1029 | struct device_attribute *attr, |
| 1030 | const char *buf, size_t count) |
| 1031 | { |
| 1032 | struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev)); |
| 1033 | unsigned long umcast_val = simple_strtoul(buf, NULL, 0); |
| 1034 | |
| 1035 | if (umcast_val > 0) { |
| 1036 | set_bit(IPOIB_FLAG_UMCAST, &priv->flags); |
| 1037 | ipoib_warn(priv, "ignoring multicast groups joined directly " |
| 1038 | "by userspace\n"); |
| 1039 | } else |
| 1040 | clear_bit(IPOIB_FLAG_UMCAST, &priv->flags); |
| 1041 | |
| 1042 | return count; |
| 1043 | } |
| 1044 | static DEVICE_ATTR(umcast, S_IWUSR | S_IRUGO, show_umcast, set_umcast); |
| 1045 | |
| 1046 | int ipoib_add_umcast_attr(struct net_device *dev) |
| 1047 | { |
| 1048 | return device_create_file(&dev->dev, &dev_attr_umcast); |
| 1049 | } |
| 1050 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1051 | static ssize_t create_child(struct device *dev, |
| 1052 | struct device_attribute *attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | const char *buf, size_t count) |
| 1054 | { |
| 1055 | int pkey; |
| 1056 | int ret; |
| 1057 | |
| 1058 | if (sscanf(buf, "%i", &pkey) != 1) |
| 1059 | return -EINVAL; |
| 1060 | |
| 1061 | if (pkey < 0 || pkey > 0xffff) |
| 1062 | return -EINVAL; |
| 1063 | |
Roland Dreier | 4ce0593 | 2005-08-19 12:03:17 -0700 | [diff] [blame] | 1064 | /* |
| 1065 | * Set the full membership bit, so that we join the right |
| 1066 | * broadcast group, etc. |
| 1067 | */ |
| 1068 | pkey |= 0x8000; |
| 1069 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1070 | ret = ipoib_vlan_add(to_net_dev(dev), pkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | |
| 1072 | return ret ? ret : count; |
| 1073 | } |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1074 | static DEVICE_ATTR(create_child, S_IWUGO, NULL, create_child); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1076 | static ssize_t delete_child(struct device *dev, |
| 1077 | struct device_attribute *attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | const char *buf, size_t count) |
| 1079 | { |
| 1080 | int pkey; |
| 1081 | int ret; |
| 1082 | |
| 1083 | if (sscanf(buf, "%i", &pkey) != 1) |
| 1084 | return -EINVAL; |
| 1085 | |
| 1086 | if (pkey < 0 || pkey > 0xffff) |
| 1087 | return -EINVAL; |
| 1088 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1089 | ret = ipoib_vlan_delete(to_net_dev(dev), pkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | |
| 1091 | return ret ? ret : count; |
| 1092 | |
| 1093 | } |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1094 | static DEVICE_ATTR(delete_child, S_IWUGO, NULL, delete_child); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | |
| 1096 | int ipoib_add_pkey_attr(struct net_device *dev) |
| 1097 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1098 | return device_create_file(&dev->dev, &dev_attr_pkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | } |
| 1100 | |
| 1101 | static struct net_device *ipoib_add_port(const char *format, |
| 1102 | struct ib_device *hca, u8 port) |
| 1103 | { |
| 1104 | struct ipoib_dev_priv *priv; |
| 1105 | int result = -ENOMEM; |
| 1106 | |
| 1107 | priv = ipoib_intf_alloc(format); |
| 1108 | if (!priv) |
| 1109 | goto alloc_mem_failed; |
| 1110 | |
| 1111 | SET_NETDEV_DEV(priv->dev, hca->dma_device); |
| 1112 | |
| 1113 | result = ib_query_pkey(hca, port, 0, &priv->pkey); |
| 1114 | if (result) { |
| 1115 | printk(KERN_WARNING "%s: ib_query_pkey port %d failed (ret = %d)\n", |
| 1116 | hca->name, port, result); |
Eli Cohen | ca6de17 | 2007-08-21 18:46:10 +0300 | [diff] [blame] | 1117 | goto device_init_failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | } |
| 1119 | |
Roland Dreier | 4ce0593 | 2005-08-19 12:03:17 -0700 | [diff] [blame] | 1120 | /* |
| 1121 | * Set the full membership bit, so that we join the right |
| 1122 | * broadcast group, etc. |
| 1123 | */ |
| 1124 | priv->pkey |= 0x8000; |
| 1125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | priv->dev->broadcast[8] = priv->pkey >> 8; |
| 1127 | priv->dev->broadcast[9] = priv->pkey & 0xff; |
| 1128 | |
| 1129 | result = ib_query_gid(hca, port, 0, &priv->local_gid); |
| 1130 | if (result) { |
| 1131 | printk(KERN_WARNING "%s: ib_query_gid port %d failed (ret = %d)\n", |
| 1132 | hca->name, port, result); |
Eli Cohen | ca6de17 | 2007-08-21 18:46:10 +0300 | [diff] [blame] | 1133 | goto device_init_failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | } else |
| 1135 | memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); |
| 1136 | |
| 1137 | |
| 1138 | result = ipoib_dev_init(priv->dev, hca, port); |
| 1139 | if (result < 0) { |
| 1140 | printk(KERN_WARNING "%s: failed to initialize port %d (ret = %d)\n", |
| 1141 | hca->name, port, result); |
| 1142 | goto device_init_failed; |
| 1143 | } |
| 1144 | |
| 1145 | INIT_IB_EVENT_HANDLER(&priv->event_handler, |
| 1146 | priv->ca, ipoib_event); |
| 1147 | result = ib_register_event_handler(&priv->event_handler); |
| 1148 | if (result < 0) { |
| 1149 | printk(KERN_WARNING "%s: ib_register_event_handler failed for " |
| 1150 | "port %d (ret = %d)\n", |
| 1151 | hca->name, port, result); |
| 1152 | goto event_failed; |
| 1153 | } |
| 1154 | |
| 1155 | result = register_netdev(priv->dev); |
| 1156 | if (result) { |
| 1157 | printk(KERN_WARNING "%s: couldn't register ipoib port %d; error %d\n", |
| 1158 | hca->name, port, result); |
| 1159 | goto register_failed; |
| 1160 | } |
| 1161 | |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 1162 | ipoib_create_debug_files(priv->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 1164 | if (ipoib_cm_add_mode_attr(priv->dev)) |
| 1165 | goto sysfs_failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | if (ipoib_add_pkey_attr(priv->dev)) |
| 1167 | goto sysfs_failed; |
Or Gerlitz | 335a64a5a | 2007-10-08 10:13:00 +0200 | [diff] [blame] | 1168 | if (ipoib_add_umcast_attr(priv->dev)) |
| 1169 | goto sysfs_failed; |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1170 | if (device_create_file(&priv->dev->dev, &dev_attr_create_child)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | goto sysfs_failed; |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1172 | if (device_create_file(&priv->dev->dev, &dev_attr_delete_child)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | goto sysfs_failed; |
| 1174 | |
| 1175 | return priv->dev; |
| 1176 | |
| 1177 | sysfs_failed: |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 1178 | ipoib_delete_debug_files(priv->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | unregister_netdev(priv->dev); |
| 1180 | |
| 1181 | register_failed: |
| 1182 | ib_unregister_event_handler(&priv->event_handler); |
Michael S. Tsirkin | 51574e0 | 2005-09-12 09:52:28 -0700 | [diff] [blame] | 1183 | flush_scheduled_work(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | |
| 1185 | event_failed: |
| 1186 | ipoib_dev_cleanup(priv->dev); |
| 1187 | |
| 1188 | device_init_failed: |
| 1189 | free_netdev(priv->dev); |
| 1190 | |
| 1191 | alloc_mem_failed: |
| 1192 | return ERR_PTR(result); |
| 1193 | } |
| 1194 | |
| 1195 | static void ipoib_add_one(struct ib_device *device) |
| 1196 | { |
| 1197 | struct list_head *dev_list; |
| 1198 | struct net_device *dev; |
| 1199 | struct ipoib_dev_priv *priv; |
| 1200 | int s, e, p; |
| 1201 | |
Tom Tucker | 07ebafb | 2006-08-03 16:02:42 -0500 | [diff] [blame] | 1202 | if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB) |
| 1203 | return; |
| 1204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL); |
| 1206 | if (!dev_list) |
| 1207 | return; |
| 1208 | |
| 1209 | INIT_LIST_HEAD(dev_list); |
| 1210 | |
Tom Tucker | 07ebafb | 2006-08-03 16:02:42 -0500 | [diff] [blame] | 1211 | if (device->node_type == RDMA_NODE_IB_SWITCH) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | s = 0; |
| 1213 | e = 0; |
| 1214 | } else { |
| 1215 | s = 1; |
| 1216 | e = device->phys_port_cnt; |
| 1217 | } |
| 1218 | |
| 1219 | for (p = s; p <= e; ++p) { |
| 1220 | dev = ipoib_add_port("ib%d", device, p); |
| 1221 | if (!IS_ERR(dev)) { |
| 1222 | priv = netdev_priv(dev); |
| 1223 | list_add_tail(&priv->list, dev_list); |
| 1224 | } |
| 1225 | } |
| 1226 | |
| 1227 | ib_set_client_data(device, &ipoib_client, dev_list); |
| 1228 | } |
| 1229 | |
| 1230 | static void ipoib_remove_one(struct ib_device *device) |
| 1231 | { |
| 1232 | struct ipoib_dev_priv *priv, *tmp; |
| 1233 | struct list_head *dev_list; |
| 1234 | |
Tom Tucker | 07ebafb | 2006-08-03 16:02:42 -0500 | [diff] [blame] | 1235 | if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB) |
| 1236 | return; |
| 1237 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | dev_list = ib_get_client_data(device, &ipoib_client); |
| 1239 | |
| 1240 | list_for_each_entry_safe(priv, tmp, dev_list, list) { |
| 1241 | ib_unregister_event_handler(&priv->event_handler); |
Michael S. Tsirkin | 51574e0 | 2005-09-12 09:52:28 -0700 | [diff] [blame] | 1242 | flush_scheduled_work(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | |
| 1244 | unregister_netdev(priv->dev); |
| 1245 | ipoib_dev_cleanup(priv->dev); |
| 1246 | free_netdev(priv->dev); |
| 1247 | } |
Michael S. Tsirkin | 06c56e4 | 2005-09-01 09:19:02 -0700 | [diff] [blame] | 1248 | |
| 1249 | kfree(dev_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | } |
| 1251 | |
| 1252 | static int __init ipoib_init_module(void) |
| 1253 | { |
| 1254 | int ret; |
| 1255 | |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 1256 | ipoib_recvq_size = roundup_pow_of_two(ipoib_recvq_size); |
| 1257 | ipoib_recvq_size = min(ipoib_recvq_size, IPOIB_MAX_QUEUE_SIZE); |
| 1258 | ipoib_recvq_size = max(ipoib_recvq_size, IPOIB_MIN_QUEUE_SIZE); |
| 1259 | |
| 1260 | ipoib_sendq_size = roundup_pow_of_two(ipoib_sendq_size); |
| 1261 | ipoib_sendq_size = min(ipoib_sendq_size, IPOIB_MAX_QUEUE_SIZE); |
| 1262 | ipoib_sendq_size = max(ipoib_sendq_size, IPOIB_MIN_QUEUE_SIZE); |
Pradeep Satyanarayana | 68e995a | 2008-01-25 14:15:24 -0800 | [diff] [blame] | 1263 | #ifdef CONFIG_INFINIBAND_IPOIB_CM |
| 1264 | ipoib_max_conn_qp = min(ipoib_max_conn_qp, IPOIB_CM_MAX_CONN_QP); |
| 1265 | #endif |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 1266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | ret = ipoib_register_debugfs(); |
| 1268 | if (ret) |
| 1269 | return ret; |
| 1270 | |
| 1271 | /* |
| 1272 | * We create our own workqueue mainly because we want to be |
| 1273 | * able to flush it when devices are being removed. We can't |
| 1274 | * use schedule_work()/flush_scheduled_work() because both |
| 1275 | * unregister_netdev() and linkwatch_event take the rtnl lock, |
| 1276 | * so flush_scheduled_work() can deadlock during device |
| 1277 | * removal. |
| 1278 | */ |
| 1279 | ipoib_workqueue = create_singlethread_workqueue("ipoib"); |
| 1280 | if (!ipoib_workqueue) { |
| 1281 | ret = -ENOMEM; |
| 1282 | goto err_fs; |
| 1283 | } |
| 1284 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1285 | ib_sa_register_client(&ipoib_sa_client); |
| 1286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | ret = ib_register_client(&ipoib_client); |
| 1288 | if (ret) |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1289 | goto err_sa; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | |
| 1291 | return 0; |
| 1292 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1293 | err_sa: |
| 1294 | ib_sa_unregister_client(&ipoib_sa_client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | destroy_workqueue(ipoib_workqueue); |
| 1296 | |
Roland Dreier | 9adec1a | 2005-04-16 15:26:07 -0700 | [diff] [blame] | 1297 | err_fs: |
| 1298 | ipoib_unregister_debugfs(); |
| 1299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | return ret; |
| 1301 | } |
| 1302 | |
| 1303 | static void __exit ipoib_cleanup_module(void) |
| 1304 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | ib_unregister_client(&ipoib_client); |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1306 | ib_sa_unregister_client(&ipoib_sa_client); |
Roland Dreier | 9adec1a | 2005-04-16 15:26:07 -0700 | [diff] [blame] | 1307 | ipoib_unregister_debugfs(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | destroy_workqueue(ipoib_workqueue); |
| 1309 | } |
| 1310 | |
| 1311 | module_init(ipoib_init_module); |
| 1312 | module_exit(ipoib_cleanup_module); |