Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. |
Roland Dreier | 2a1d9b7 | 2005-08-10 23:03:10 -0700 | [diff] [blame] | 3 | * Copyright (c) 2005 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_multicast.c 1362 2004-12-18 15:56:29Z roland $ |
| 35 | */ |
| 36 | |
| 37 | #include <linux/skbuff.h> |
| 38 | #include <linux/rtnetlink.h> |
| 39 | #include <linux/ip.h> |
| 40 | #include <linux/in.h> |
| 41 | #include <linux/igmp.h> |
| 42 | #include <linux/inetdevice.h> |
| 43 | #include <linux/delay.h> |
| 44 | #include <linux/completion.h> |
| 45 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 46 | #include <net/dst.h> |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include "ipoib.h" |
| 49 | |
| 50 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
| 51 | static int mcast_debug_level; |
| 52 | |
| 53 | module_param(mcast_debug_level, int, 0644); |
| 54 | MODULE_PARM_DESC(mcast_debug_level, |
| 55 | "Enable multicast debug tracing if > 0"); |
| 56 | #endif |
| 57 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 58 | static DEFINE_MUTEX(mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
| 60 | /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */ |
| 61 | struct ipoib_mcast { |
| 62 | struct ib_sa_mcmember_rec mcmember; |
| 63 | struct ipoib_ah *ah; |
| 64 | |
| 65 | struct rb_node rb_node; |
| 66 | struct list_head list; |
| 67 | struct completion done; |
| 68 | |
| 69 | int query_id; |
| 70 | struct ib_sa_query *query; |
| 71 | |
| 72 | unsigned long created; |
| 73 | unsigned long backoff; |
| 74 | |
| 75 | unsigned long flags; |
| 76 | unsigned char logcount; |
| 77 | |
| 78 | struct list_head neigh_list; |
| 79 | |
| 80 | struct sk_buff_head pkt_queue; |
| 81 | |
| 82 | struct net_device *dev; |
| 83 | }; |
| 84 | |
| 85 | struct ipoib_mcast_iter { |
| 86 | struct net_device *dev; |
| 87 | union ib_gid mgid; |
| 88 | unsigned long created; |
| 89 | unsigned int queuelen; |
| 90 | unsigned int complete; |
| 91 | unsigned int send_only; |
| 92 | }; |
| 93 | |
| 94 | static void ipoib_mcast_free(struct ipoib_mcast *mcast) |
| 95 | { |
| 96 | struct net_device *dev = mcast->dev; |
| 97 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 98 | struct ipoib_neigh *neigh, *tmp; |
| 99 | unsigned long flags; |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 100 | int tx_dropped = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
| 102 | ipoib_dbg_mcast(netdev_priv(dev), |
| 103 | "deleting multicast group " IPOIB_GID_FMT "\n", |
| 104 | IPOIB_GID_ARG(mcast->mcmember.mgid)); |
| 105 | |
| 106 | spin_lock_irqsave(&priv->lock, flags); |
| 107 | |
| 108 | list_for_each_entry_safe(neigh, tmp, &mcast->neigh_list, list) { |
Eli Cohen | 97460df | 2006-01-10 07:43:02 -0800 | [diff] [blame] | 109 | /* |
| 110 | * It's safe to call ipoib_put_ah() inside priv->lock |
| 111 | * here, because we know that mcast->ah will always |
| 112 | * hold one more reference, so ipoib_put_ah() will |
| 113 | * never do more than decrement the ref count. |
| 114 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | if (neigh->ah) |
Eli Cohen | 97460df | 2006-01-10 07:43:02 -0800 | [diff] [blame] | 116 | ipoib_put_ah(neigh->ah); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | *to_ipoib_neigh(neigh->neighbour) = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | kfree(neigh); |
| 119 | } |
| 120 | |
| 121 | spin_unlock_irqrestore(&priv->lock, flags); |
| 122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | if (mcast->ah) |
| 124 | ipoib_put_ah(mcast->ah); |
| 125 | |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 126 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
| 127 | ++tx_dropped; |
Roland Dreier | 8c608a3 | 2005-11-07 10:49:38 -0800 | [diff] [blame] | 128 | dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue)); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 129 | } |
| 130 | |
| 131 | spin_lock_irqsave(&priv->tx_lock, flags); |
| 132 | priv->stats.tx_dropped += tx_dropped; |
| 133 | spin_unlock_irqrestore(&priv->tx_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
| 135 | kfree(mcast); |
| 136 | } |
| 137 | |
| 138 | static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev, |
| 139 | int can_sleep) |
| 140 | { |
| 141 | struct ipoib_mcast *mcast; |
| 142 | |
Roland Dreier | de6eb66 | 2005-11-02 07:23:14 -0800 | [diff] [blame] | 143 | mcast = kzalloc(sizeof *mcast, can_sleep ? GFP_KERNEL : GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | if (!mcast) |
| 145 | return NULL; |
| 146 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | mcast->dev = dev; |
| 148 | mcast->created = jiffies; |
Hal Rosenstock | ce5b65c | 2005-09-18 13:47:53 -0700 | [diff] [blame] | 149 | mcast->backoff = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | INIT_LIST_HEAD(&mcast->list); |
| 152 | INIT_LIST_HEAD(&mcast->neigh_list); |
| 153 | skb_queue_head_init(&mcast->pkt_queue); |
| 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | return mcast; |
| 156 | } |
| 157 | |
| 158 | static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, union ib_gid *mgid) |
| 159 | { |
| 160 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 161 | struct rb_node *n = priv->multicast_tree.rb_node; |
| 162 | |
| 163 | while (n) { |
| 164 | struct ipoib_mcast *mcast; |
| 165 | int ret; |
| 166 | |
| 167 | mcast = rb_entry(n, struct ipoib_mcast, rb_node); |
| 168 | |
| 169 | ret = memcmp(mgid->raw, mcast->mcmember.mgid.raw, |
| 170 | sizeof (union ib_gid)); |
| 171 | if (ret < 0) |
| 172 | n = n->rb_left; |
| 173 | else if (ret > 0) |
| 174 | n = n->rb_right; |
| 175 | else |
| 176 | return mcast; |
| 177 | } |
| 178 | |
| 179 | return NULL; |
| 180 | } |
| 181 | |
| 182 | static int __ipoib_mcast_add(struct net_device *dev, struct ipoib_mcast *mcast) |
| 183 | { |
| 184 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 185 | struct rb_node **n = &priv->multicast_tree.rb_node, *pn = NULL; |
| 186 | |
| 187 | while (*n) { |
| 188 | struct ipoib_mcast *tmcast; |
| 189 | int ret; |
| 190 | |
| 191 | pn = *n; |
| 192 | tmcast = rb_entry(pn, struct ipoib_mcast, rb_node); |
| 193 | |
| 194 | ret = memcmp(mcast->mcmember.mgid.raw, tmcast->mcmember.mgid.raw, |
| 195 | sizeof (union ib_gid)); |
| 196 | if (ret < 0) |
| 197 | n = &pn->rb_left; |
| 198 | else if (ret > 0) |
| 199 | n = &pn->rb_right; |
| 200 | else |
| 201 | return -EEXIST; |
| 202 | } |
| 203 | |
| 204 | rb_link_node(&mcast->rb_node, pn, n); |
| 205 | rb_insert_color(&mcast->rb_node, &priv->multicast_tree); |
| 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast, |
| 211 | struct ib_sa_mcmember_rec *mcmember) |
| 212 | { |
| 213 | struct net_device *dev = mcast->dev; |
| 214 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Eli Cohen | 7343b23 | 2006-02-27 20:47:43 -0800 | [diff] [blame] | 215 | struct ipoib_ah *ah; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | int ret; |
| 217 | |
| 218 | mcast->mcmember = *mcmember; |
| 219 | |
| 220 | /* Set the cached Q_Key before we attach if it's the broadcast group */ |
| 221 | if (!memcmp(mcast->mcmember.mgid.raw, priv->dev->broadcast + 4, |
| 222 | sizeof (union ib_gid))) { |
| 223 | priv->qkey = be32_to_cpu(priv->broadcast->mcmember.qkey); |
| 224 | priv->tx_wr.wr.ud.remote_qkey = priv->qkey; |
| 225 | } |
| 226 | |
| 227 | if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { |
| 228 | if (test_and_set_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { |
| 229 | ipoib_warn(priv, "multicast group " IPOIB_GID_FMT |
| 230 | " already attached\n", |
| 231 | IPOIB_GID_ARG(mcast->mcmember.mgid)); |
| 232 | |
| 233 | return 0; |
| 234 | } |
| 235 | |
| 236 | ret = ipoib_mcast_attach(dev, be16_to_cpu(mcast->mcmember.mlid), |
| 237 | &mcast->mcmember.mgid); |
| 238 | if (ret < 0) { |
| 239 | ipoib_warn(priv, "couldn't attach QP to multicast group " |
| 240 | IPOIB_GID_FMT "\n", |
| 241 | IPOIB_GID_ARG(mcast->mcmember.mgid)); |
| 242 | |
| 243 | clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags); |
| 244 | return ret; |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | { |
| 249 | struct ib_ah_attr av = { |
| 250 | .dlid = be16_to_cpu(mcast->mcmember.mlid), |
| 251 | .port_num = priv->port, |
| 252 | .sl = mcast->mcmember.sl, |
| 253 | .ah_flags = IB_AH_GRH, |
| 254 | .grh = { |
| 255 | .flow_label = be32_to_cpu(mcast->mcmember.flow_label), |
| 256 | .hop_limit = mcast->mcmember.hop_limit, |
| 257 | .sgid_index = 0, |
| 258 | .traffic_class = mcast->mcmember.traffic_class |
| 259 | } |
| 260 | }; |
Roland Dreier | e6ded99 | 2005-04-16 15:26:06 -0700 | [diff] [blame] | 261 | int path_rate = ib_sa_rate_enum_to_int(mcast->mcmember.rate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | |
| 263 | av.grh.dgid = mcast->mcmember.mgid; |
| 264 | |
Roland Dreier | e6ded99 | 2005-04-16 15:26:06 -0700 | [diff] [blame] | 265 | if (path_rate > 0 && priv->local_rate > path_rate) |
| 266 | av.static_rate = (priv->local_rate - 1) / path_rate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
| 268 | ipoib_dbg_mcast(priv, "static_rate %d for local port %dX, mcmember %dX\n", |
| 269 | av.static_rate, priv->local_rate, |
| 270 | ib_sa_rate_enum_to_int(mcast->mcmember.rate)); |
| 271 | |
Eli Cohen | 7343b23 | 2006-02-27 20:47:43 -0800 | [diff] [blame] | 272 | ah = ipoib_create_ah(dev, priv->pd, &av); |
| 273 | if (!ah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | ipoib_warn(priv, "ib_address_create failed\n"); |
| 275 | } else { |
| 276 | ipoib_dbg_mcast(priv, "MGID " IPOIB_GID_FMT |
| 277 | " AV %p, LID 0x%04x, SL %d\n", |
| 278 | IPOIB_GID_ARG(mcast->mcmember.mgid), |
| 279 | mcast->ah->ah, |
| 280 | be16_to_cpu(mcast->mcmember.mlid), |
| 281 | mcast->mcmember.sl); |
| 282 | } |
Eli Cohen | 7343b23 | 2006-02-27 20:47:43 -0800 | [diff] [blame] | 283 | |
| 284 | spin_lock_irq(&priv->lock); |
| 285 | mcast->ah = ah; |
| 286 | spin_unlock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | } |
| 288 | |
| 289 | /* actually send any queued packets */ |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 290 | spin_lock_irq(&priv->tx_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
| 292 | struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 293 | spin_unlock_irq(&priv->tx_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
| 295 | skb->dev = dev; |
| 296 | |
| 297 | if (!skb->dst || !skb->dst->neighbour) { |
| 298 | /* put pseudoheader back on for next time */ |
| 299 | skb_push(skb, sizeof (struct ipoib_pseudoheader)); |
| 300 | } |
| 301 | |
| 302 | if (dev_queue_xmit(skb)) |
| 303 | ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n"); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 304 | spin_lock_irq(&priv->tx_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | } |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 306 | spin_unlock_irq(&priv->tx_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | static void |
| 312 | ipoib_mcast_sendonly_join_complete(int status, |
| 313 | struct ib_sa_mcmember_rec *mcmember, |
| 314 | void *mcast_ptr) |
| 315 | { |
| 316 | struct ipoib_mcast *mcast = mcast_ptr; |
| 317 | struct net_device *dev = mcast->dev; |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 318 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | |
| 320 | if (!status) |
| 321 | ipoib_mcast_join_finish(mcast, mcmember); |
| 322 | else { |
| 323 | if (mcast->logcount++ < 20) |
| 324 | ipoib_dbg_mcast(netdev_priv(dev), "multicast join failed for " |
| 325 | IPOIB_GID_FMT ", status %d\n", |
| 326 | IPOIB_GID_ARG(mcast->mcmember.mgid), status); |
| 327 | |
| 328 | /* Flush out any queued packets */ |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 329 | spin_lock_irq(&priv->tx_lock); |
| 330 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
| 331 | ++priv->stats.tx_dropped; |
Roland Dreier | 8c608a3 | 2005-11-07 10:49:38 -0800 | [diff] [blame] | 332 | dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue)); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 333 | } |
| 334 | spin_unlock_irq(&priv->tx_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
| 336 | /* Clear the busy flag so we try again */ |
| 337 | clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); |
| 338 | } |
| 339 | |
| 340 | complete(&mcast->done); |
| 341 | } |
| 342 | |
| 343 | static int ipoib_mcast_sendonly_join(struct ipoib_mcast *mcast) |
| 344 | { |
| 345 | struct net_device *dev = mcast->dev; |
| 346 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 347 | struct ib_sa_mcmember_rec rec = { |
| 348 | #if 0 /* Some SMs don't support send-only yet */ |
| 349 | .join_state = 4 |
| 350 | #else |
| 351 | .join_state = 1 |
| 352 | #endif |
| 353 | }; |
| 354 | int ret = 0; |
| 355 | |
| 356 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) { |
| 357 | ipoib_dbg_mcast(priv, "device shutting down, no multicast joins\n"); |
| 358 | return -ENODEV; |
| 359 | } |
| 360 | |
| 361 | if (test_and_set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) { |
| 362 | ipoib_dbg_mcast(priv, "multicast entry busy, skipping\n"); |
| 363 | return -EBUSY; |
| 364 | } |
| 365 | |
| 366 | rec.mgid = mcast->mcmember.mgid; |
| 367 | rec.port_gid = priv->local_gid; |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 368 | rec.pkey = cpu_to_be16(priv->pkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
Michael S. Tsirkin | de92248 | 2005-11-29 10:18:45 -0800 | [diff] [blame] | 370 | init_completion(&mcast->done); |
| 371 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec, |
| 373 | IB_SA_MCMEMBER_REC_MGID | |
| 374 | IB_SA_MCMEMBER_REC_PORT_GID | |
| 375 | IB_SA_MCMEMBER_REC_PKEY | |
| 376 | IB_SA_MCMEMBER_REC_JOIN_STATE, |
| 377 | 1000, GFP_ATOMIC, |
| 378 | ipoib_mcast_sendonly_join_complete, |
| 379 | mcast, &mcast->query); |
| 380 | if (ret < 0) { |
| 381 | ipoib_warn(priv, "ib_sa_mcmember_rec_set failed (ret = %d)\n", |
| 382 | ret); |
| 383 | } else { |
| 384 | ipoib_dbg_mcast(priv, "no multicast record for " IPOIB_GID_FMT |
| 385 | ", starting join\n", |
| 386 | IPOIB_GID_ARG(mcast->mcmember.mgid)); |
| 387 | |
| 388 | mcast->query_id = ret; |
| 389 | } |
| 390 | |
| 391 | return ret; |
| 392 | } |
| 393 | |
| 394 | static void ipoib_mcast_join_complete(int status, |
| 395 | struct ib_sa_mcmember_rec *mcmember, |
| 396 | void *mcast_ptr) |
| 397 | { |
| 398 | struct ipoib_mcast *mcast = mcast_ptr; |
| 399 | struct net_device *dev = mcast->dev; |
| 400 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 401 | |
| 402 | ipoib_dbg_mcast(priv, "join completion for " IPOIB_GID_FMT |
| 403 | " (status %d)\n", |
| 404 | IPOIB_GID_ARG(mcast->mcmember.mgid), status); |
| 405 | |
| 406 | if (!status && !ipoib_mcast_join_finish(mcast, mcmember)) { |
Hal Rosenstock | ce5b65c | 2005-09-18 13:47:53 -0700 | [diff] [blame] | 407 | mcast->backoff = 1; |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 408 | mutex_lock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
| 410 | queue_work(ipoib_workqueue, &priv->mcast_task); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 411 | mutex_unlock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | complete(&mcast->done); |
| 413 | return; |
| 414 | } |
| 415 | |
| 416 | if (status == -EINTR) { |
| 417 | complete(&mcast->done); |
| 418 | return; |
| 419 | } |
| 420 | |
| 421 | if (status && mcast->logcount++ < 20) { |
| 422 | if (status == -ETIMEDOUT || status == -EINTR) { |
| 423 | ipoib_dbg_mcast(priv, "multicast join failed for " IPOIB_GID_FMT |
| 424 | ", status %d\n", |
| 425 | IPOIB_GID_ARG(mcast->mcmember.mgid), |
| 426 | status); |
| 427 | } else { |
| 428 | ipoib_warn(priv, "multicast join failed for " |
| 429 | IPOIB_GID_FMT ", status %d\n", |
| 430 | IPOIB_GID_ARG(mcast->mcmember.mgid), |
| 431 | status); |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | mcast->backoff *= 2; |
| 436 | if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS) |
| 437 | mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS; |
| 438 | |
Michael S. Tsirkin | 9acf6a8 | 2006-03-02 11:07:47 -0800 | [diff] [blame] | 439 | mutex_lock(&mcast_mutex); |
| 440 | |
| 441 | spin_lock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | mcast->query = NULL; |
| 443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) { |
| 445 | if (status == -ETIMEDOUT) |
| 446 | queue_work(ipoib_workqueue, &priv->mcast_task); |
| 447 | else |
| 448 | queue_delayed_work(ipoib_workqueue, &priv->mcast_task, |
| 449 | mcast->backoff * HZ); |
| 450 | } else |
| 451 | complete(&mcast->done); |
Michael S. Tsirkin | 9acf6a8 | 2006-03-02 11:07:47 -0800 | [diff] [blame] | 452 | spin_unlock_irq(&priv->lock); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 453 | mutex_unlock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
| 455 | return; |
| 456 | } |
| 457 | |
| 458 | static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast, |
| 459 | int create) |
| 460 | { |
| 461 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 462 | struct ib_sa_mcmember_rec rec = { |
| 463 | .join_state = 1 |
| 464 | }; |
| 465 | ib_sa_comp_mask comp_mask; |
| 466 | int ret = 0; |
| 467 | |
| 468 | ipoib_dbg_mcast(priv, "joining MGID " IPOIB_GID_FMT "\n", |
| 469 | IPOIB_GID_ARG(mcast->mcmember.mgid)); |
| 470 | |
| 471 | rec.mgid = mcast->mcmember.mgid; |
| 472 | rec.port_gid = priv->local_gid; |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 473 | rec.pkey = cpu_to_be16(priv->pkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | comp_mask = |
| 476 | IB_SA_MCMEMBER_REC_MGID | |
| 477 | IB_SA_MCMEMBER_REC_PORT_GID | |
| 478 | IB_SA_MCMEMBER_REC_PKEY | |
| 479 | IB_SA_MCMEMBER_REC_JOIN_STATE; |
| 480 | |
| 481 | if (create) { |
| 482 | comp_mask |= |
| 483 | IB_SA_MCMEMBER_REC_QKEY | |
| 484 | IB_SA_MCMEMBER_REC_SL | |
| 485 | IB_SA_MCMEMBER_REC_FLOW_LABEL | |
| 486 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; |
| 487 | |
| 488 | rec.qkey = priv->broadcast->mcmember.qkey; |
| 489 | rec.sl = priv->broadcast->mcmember.sl; |
| 490 | rec.flow_label = priv->broadcast->mcmember.flow_label; |
| 491 | rec.traffic_class = priv->broadcast->mcmember.traffic_class; |
| 492 | } |
| 493 | |
Michael S. Tsirkin | de92248 | 2005-11-29 10:18:45 -0800 | [diff] [blame] | 494 | init_completion(&mcast->done); |
| 495 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec, comp_mask, |
| 497 | mcast->backoff * 1000, GFP_ATOMIC, |
| 498 | ipoib_mcast_join_complete, |
| 499 | mcast, &mcast->query); |
| 500 | |
| 501 | if (ret < 0) { |
| 502 | ipoib_warn(priv, "ib_sa_mcmember_rec_set failed, status %d\n", ret); |
| 503 | |
| 504 | mcast->backoff *= 2; |
| 505 | if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS) |
| 506 | mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS; |
| 507 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 508 | mutex_lock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
| 510 | queue_delayed_work(ipoib_workqueue, |
| 511 | &priv->mcast_task, |
Hal Rosenstock | ce5b65c | 2005-09-18 13:47:53 -0700 | [diff] [blame] | 512 | mcast->backoff * HZ); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 513 | mutex_unlock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | } else |
| 515 | mcast->query_id = ret; |
| 516 | } |
| 517 | |
| 518 | void ipoib_mcast_join_task(void *dev_ptr) |
| 519 | { |
| 520 | struct net_device *dev = dev_ptr; |
| 521 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 522 | |
| 523 | if (!test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
| 524 | return; |
| 525 | |
| 526 | if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid)) |
| 527 | ipoib_warn(priv, "ib_gid_entry_get() failed\n"); |
| 528 | else |
| 529 | memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); |
| 530 | |
| 531 | { |
| 532 | struct ib_port_attr attr; |
| 533 | |
| 534 | if (!ib_query_port(priv->ca, priv->port, &attr)) { |
| 535 | priv->local_lid = attr.lid; |
| 536 | priv->local_rate = attr.active_speed * |
| 537 | ib_width_enum_to_int(attr.active_width); |
| 538 | } else |
| 539 | ipoib_warn(priv, "ib_query_port failed\n"); |
| 540 | } |
| 541 | |
| 542 | if (!priv->broadcast) { |
Roland Dreier | 20b8338 | 2006-02-11 12:22:12 -0800 | [diff] [blame] | 543 | struct ipoib_mcast *broadcast; |
| 544 | |
| 545 | broadcast = ipoib_mcast_alloc(dev, 1); |
| 546 | if (!broadcast) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | ipoib_warn(priv, "failed to allocate broadcast group\n"); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 548 | mutex_lock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
| 550 | queue_delayed_work(ipoib_workqueue, |
| 551 | &priv->mcast_task, HZ); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 552 | mutex_unlock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | return; |
| 554 | } |
| 555 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | spin_lock_irq(&priv->lock); |
Roland Dreier | 20b8338 | 2006-02-11 12:22:12 -0800 | [diff] [blame] | 557 | memcpy(broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4, |
| 558 | sizeof (union ib_gid)); |
| 559 | priv->broadcast = broadcast; |
| 560 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | __ipoib_mcast_add(dev, priv->broadcast); |
| 562 | spin_unlock_irq(&priv->lock); |
| 563 | } |
| 564 | |
| 565 | if (!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { |
| 566 | ipoib_mcast_join(dev, priv->broadcast, 0); |
| 567 | return; |
| 568 | } |
| 569 | |
| 570 | while (1) { |
| 571 | struct ipoib_mcast *mcast = NULL; |
| 572 | |
| 573 | spin_lock_irq(&priv->lock); |
| 574 | list_for_each_entry(mcast, &priv->multicast_list, list) { |
| 575 | if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) |
| 576 | && !test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags) |
| 577 | && !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { |
| 578 | /* Found the next unjoined group */ |
| 579 | break; |
| 580 | } |
| 581 | } |
| 582 | spin_unlock_irq(&priv->lock); |
| 583 | |
| 584 | if (&mcast->list == &priv->multicast_list) { |
| 585 | /* All done */ |
| 586 | break; |
| 587 | } |
| 588 | |
| 589 | ipoib_mcast_join(dev, mcast, 1); |
| 590 | return; |
| 591 | } |
| 592 | |
| 593 | priv->mcast_mtu = ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu) - |
| 594 | IPOIB_ENCAP_LEN; |
| 595 | dev->mtu = min(priv->mcast_mtu, priv->admin_mtu); |
| 596 | |
| 597 | ipoib_dbg_mcast(priv, "successfully joined all multicast groups\n"); |
| 598 | |
| 599 | clear_bit(IPOIB_MCAST_RUN, &priv->flags); |
| 600 | netif_carrier_on(dev); |
| 601 | } |
| 602 | |
| 603 | int ipoib_mcast_start_thread(struct net_device *dev) |
| 604 | { |
| 605 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 606 | |
| 607 | ipoib_dbg_mcast(priv, "starting multicast thread\n"); |
| 608 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 609 | mutex_lock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | if (!test_and_set_bit(IPOIB_MCAST_RUN, &priv->flags)) |
| 611 | queue_work(ipoib_workqueue, &priv->mcast_task); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 612 | mutex_unlock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | |
Michael S. Tsirkin | 479a079 | 2006-02-07 16:37:08 -0800 | [diff] [blame] | 614 | spin_lock_irq(&priv->lock); |
| 615 | set_bit(IPOIB_MCAST_STARTED, &priv->flags); |
| 616 | spin_unlock_irq(&priv->lock); |
| 617 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | return 0; |
| 619 | } |
| 620 | |
Roland Dreier | 8d2cae0 | 2005-09-20 10:52:04 -0700 | [diff] [blame] | 621 | int ipoib_mcast_stop_thread(struct net_device *dev, int flush) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | { |
| 623 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 624 | struct ipoib_mcast *mcast; |
| 625 | |
| 626 | ipoib_dbg_mcast(priv, "stopping multicast thread\n"); |
| 627 | |
Michael S. Tsirkin | 479a079 | 2006-02-07 16:37:08 -0800 | [diff] [blame] | 628 | spin_lock_irq(&priv->lock); |
| 629 | clear_bit(IPOIB_MCAST_STARTED, &priv->flags); |
| 630 | spin_unlock_irq(&priv->lock); |
| 631 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 632 | mutex_lock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | clear_bit(IPOIB_MCAST_RUN, &priv->flags); |
| 634 | cancel_delayed_work(&priv->mcast_task); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 635 | mutex_unlock(&mcast_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | |
Roland Dreier | 8d2cae0 | 2005-09-20 10:52:04 -0700 | [diff] [blame] | 637 | if (flush) |
| 638 | flush_workqueue(ipoib_workqueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | |
Michael S. Tsirkin | 9acf6a8 | 2006-03-02 11:07:47 -0800 | [diff] [blame] | 640 | spin_lock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | if (priv->broadcast && priv->broadcast->query) { |
| 642 | ib_sa_cancel_query(priv->broadcast->query_id, priv->broadcast->query); |
| 643 | priv->broadcast->query = NULL; |
Michael S. Tsirkin | 9acf6a8 | 2006-03-02 11:07:47 -0800 | [diff] [blame] | 644 | spin_unlock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | ipoib_dbg_mcast(priv, "waiting for bcast\n"); |
| 646 | wait_for_completion(&priv->broadcast->done); |
Michael S. Tsirkin | 9acf6a8 | 2006-03-02 11:07:47 -0800 | [diff] [blame] | 647 | } else |
| 648 | spin_unlock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | |
| 650 | list_for_each_entry(mcast, &priv->multicast_list, list) { |
Michael S. Tsirkin | 9acf6a8 | 2006-03-02 11:07:47 -0800 | [diff] [blame] | 651 | spin_lock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | if (mcast->query) { |
| 653 | ib_sa_cancel_query(mcast->query_id, mcast->query); |
| 654 | mcast->query = NULL; |
Michael S. Tsirkin | 9acf6a8 | 2006-03-02 11:07:47 -0800 | [diff] [blame] | 655 | spin_unlock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | ipoib_dbg_mcast(priv, "waiting for MGID " IPOIB_GID_FMT "\n", |
| 657 | IPOIB_GID_ARG(mcast->mcmember.mgid)); |
| 658 | wait_for_completion(&mcast->done); |
Michael S. Tsirkin | 9acf6a8 | 2006-03-02 11:07:47 -0800 | [diff] [blame] | 659 | } else |
| 660 | spin_unlock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | } |
| 662 | |
| 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast) |
| 667 | { |
| 668 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 669 | struct ib_sa_mcmember_rec rec = { |
| 670 | .join_state = 1 |
| 671 | }; |
| 672 | int ret = 0; |
| 673 | |
| 674 | if (!test_and_clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) |
| 675 | return 0; |
| 676 | |
| 677 | ipoib_dbg_mcast(priv, "leaving MGID " IPOIB_GID_FMT "\n", |
| 678 | IPOIB_GID_ARG(mcast->mcmember.mgid)); |
| 679 | |
| 680 | rec.mgid = mcast->mcmember.mgid; |
| 681 | rec.port_gid = priv->local_gid; |
Sean Hefty | 97f52eb | 2005-08-13 21:05:57 -0700 | [diff] [blame] | 682 | rec.pkey = cpu_to_be16(priv->pkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | |
| 684 | /* Remove ourselves from the multicast group */ |
| 685 | ret = ipoib_mcast_detach(dev, be16_to_cpu(mcast->mcmember.mlid), |
| 686 | &mcast->mcmember.mgid); |
| 687 | if (ret) |
| 688 | ipoib_warn(priv, "ipoib_mcast_detach failed (result = %d)\n", ret); |
| 689 | |
| 690 | /* |
| 691 | * Just make one shot at leaving and don't wait for a reply; |
| 692 | * if we fail, too bad. |
| 693 | */ |
| 694 | ret = ib_sa_mcmember_rec_delete(priv->ca, priv->port, &rec, |
| 695 | IB_SA_MCMEMBER_REC_MGID | |
| 696 | IB_SA_MCMEMBER_REC_PORT_GID | |
| 697 | IB_SA_MCMEMBER_REC_PKEY | |
| 698 | IB_SA_MCMEMBER_REC_JOIN_STATE, |
| 699 | 0, GFP_ATOMIC, NULL, |
| 700 | mcast, &mcast->query); |
| 701 | if (ret < 0) |
| 702 | ipoib_warn(priv, "ib_sa_mcmember_rec_delete failed " |
| 703 | "for leave (result = %d)\n", ret); |
| 704 | |
| 705 | return 0; |
| 706 | } |
| 707 | |
| 708 | void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid, |
| 709 | struct sk_buff *skb) |
| 710 | { |
| 711 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 712 | struct ipoib_mcast *mcast; |
| 713 | |
| 714 | /* |
| 715 | * We can only be called from ipoib_start_xmit, so we're |
| 716 | * inside tx_lock -- no need to save/restore flags. |
| 717 | */ |
| 718 | spin_lock(&priv->lock); |
| 719 | |
Roland Dreier | 20b8338 | 2006-02-11 12:22:12 -0800 | [diff] [blame] | 720 | if (!test_bit(IPOIB_MCAST_STARTED, &priv->flags) || |
| 721 | !priv->broadcast || |
| 722 | !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { |
Michael S. Tsirkin | 479a079 | 2006-02-07 16:37:08 -0800 | [diff] [blame] | 723 | ++priv->stats.tx_dropped; |
| 724 | dev_kfree_skb_any(skb); |
| 725 | goto unlock; |
| 726 | } |
| 727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | mcast = __ipoib_mcast_find(dev, mgid); |
| 729 | if (!mcast) { |
| 730 | /* Let's create a new send only group now */ |
| 731 | ipoib_dbg_mcast(priv, "setting up send only multicast group for " |
| 732 | IPOIB_GID_FMT "\n", IPOIB_GID_ARG(*mgid)); |
| 733 | |
| 734 | mcast = ipoib_mcast_alloc(dev, 0); |
| 735 | if (!mcast) { |
| 736 | ipoib_warn(priv, "unable to allocate memory for " |
| 737 | "multicast structure\n"); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 738 | ++priv->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | dev_kfree_skb_any(skb); |
| 740 | goto out; |
| 741 | } |
| 742 | |
| 743 | set_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags); |
| 744 | mcast->mcmember.mgid = *mgid; |
| 745 | __ipoib_mcast_add(dev, mcast); |
| 746 | list_add_tail(&mcast->list, &priv->multicast_list); |
| 747 | } |
| 748 | |
| 749 | if (!mcast->ah) { |
| 750 | if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE) |
| 751 | skb_queue_tail(&mcast->pkt_queue, skb); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 752 | else { |
| 753 | ++priv->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | dev_kfree_skb_any(skb); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 755 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | |
| 757 | if (mcast->query) |
| 758 | ipoib_dbg_mcast(priv, "no address vector, " |
| 759 | "but multicast join already started\n"); |
| 760 | else if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) |
| 761 | ipoib_mcast_sendonly_join(mcast); |
| 762 | |
| 763 | /* |
| 764 | * If lookup completes between here and out:, don't |
| 765 | * want to send packet twice. |
| 766 | */ |
| 767 | mcast = NULL; |
| 768 | } |
| 769 | |
| 770 | out: |
| 771 | if (mcast && mcast->ah) { |
| 772 | if (skb->dst && |
| 773 | skb->dst->neighbour && |
| 774 | !*to_ipoib_neigh(skb->dst->neighbour)) { |
| 775 | struct ipoib_neigh *neigh = kmalloc(sizeof *neigh, GFP_ATOMIC); |
| 776 | |
| 777 | if (neigh) { |
| 778 | kref_get(&mcast->ah->ref); |
| 779 | neigh->ah = mcast->ah; |
| 780 | neigh->neighbour = skb->dst->neighbour; |
| 781 | *to_ipoib_neigh(skb->dst->neighbour) = neigh; |
| 782 | list_add_tail(&neigh->list, &mcast->neigh_list); |
| 783 | } |
| 784 | } |
| 785 | |
| 786 | ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN); |
| 787 | } |
| 788 | |
Michael S. Tsirkin | 479a079 | 2006-02-07 16:37:08 -0800 | [diff] [blame] | 789 | unlock: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | spin_unlock(&priv->lock); |
| 791 | } |
| 792 | |
| 793 | void ipoib_mcast_dev_flush(struct net_device *dev) |
| 794 | { |
| 795 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 796 | LIST_HEAD(remove_list); |
Eli Cohen | 988bd50 | 2006-01-12 14:32:20 -0800 | [diff] [blame] | 797 | struct ipoib_mcast *mcast, *tmcast; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | unsigned long flags; |
| 799 | |
| 800 | ipoib_dbg_mcast(priv, "flushing multicast list\n"); |
| 801 | |
| 802 | spin_lock_irqsave(&priv->lock, flags); |
Eli Cohen | 988bd50 | 2006-01-12 14:32:20 -0800 | [diff] [blame] | 803 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { |
Eli Cohen | 988bd50 | 2006-01-12 14:32:20 -0800 | [diff] [blame] | 805 | list_del(&mcast->list); |
| 806 | rb_erase(&mcast->rb_node, &priv->multicast_tree); |
| 807 | list_add_tail(&mcast->list, &remove_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | } |
| 809 | |
| 810 | if (priv->broadcast) { |
Eli Cohen | 988bd50 | 2006-01-12 14:32:20 -0800 | [diff] [blame] | 811 | rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree); |
| 812 | list_add_tail(&priv->broadcast->list, &remove_list); |
| 813 | priv->broadcast = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | } |
| 815 | |
| 816 | spin_unlock_irqrestore(&priv->lock, flags); |
| 817 | |
| 818 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { |
| 819 | ipoib_mcast_leave(dev, mcast); |
| 820 | ipoib_mcast_free(mcast); |
| 821 | } |
| 822 | } |
| 823 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | void ipoib_mcast_restart_task(void *dev_ptr) |
| 825 | { |
| 826 | struct net_device *dev = dev_ptr; |
| 827 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 828 | struct dev_mc_list *mclist; |
| 829 | struct ipoib_mcast *mcast, *tmcast; |
| 830 | LIST_HEAD(remove_list); |
| 831 | unsigned long flags; |
| 832 | |
| 833 | ipoib_dbg_mcast(priv, "restarting multicast task\n"); |
| 834 | |
Roland Dreier | 8d2cae0 | 2005-09-20 10:52:04 -0700 | [diff] [blame] | 835 | ipoib_mcast_stop_thread(dev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | |
Michael S. Tsirkin | 78bfe0b | 2006-01-11 11:47:34 -0800 | [diff] [blame] | 837 | spin_lock_irqsave(&dev->xmit_lock, flags); |
| 838 | spin_lock(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | |
| 840 | /* |
| 841 | * Unfortunately, the networking core only gives us a list of all of |
| 842 | * the multicast hardware addresses. We need to figure out which ones |
| 843 | * are new and which ones have been removed |
| 844 | */ |
| 845 | |
| 846 | /* Clear out the found flag */ |
| 847 | list_for_each_entry(mcast, &priv->multicast_list, list) |
| 848 | clear_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); |
| 849 | |
| 850 | /* Mark all of the entries that are found or don't exist */ |
| 851 | for (mclist = dev->mc_list; mclist; mclist = mclist->next) { |
| 852 | union ib_gid mgid; |
| 853 | |
| 854 | memcpy(mgid.raw, mclist->dmi_addr + 4, sizeof mgid); |
| 855 | |
| 856 | /* Add in the P_Key */ |
| 857 | mgid.raw[4] = (priv->pkey >> 8) & 0xff; |
| 858 | mgid.raw[5] = priv->pkey & 0xff; |
| 859 | |
| 860 | mcast = __ipoib_mcast_find(dev, &mgid); |
| 861 | if (!mcast || test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { |
| 862 | struct ipoib_mcast *nmcast; |
| 863 | |
| 864 | /* Not found or send-only group, let's add a new entry */ |
| 865 | ipoib_dbg_mcast(priv, "adding multicast entry for mgid " |
| 866 | IPOIB_GID_FMT "\n", IPOIB_GID_ARG(mgid)); |
| 867 | |
| 868 | nmcast = ipoib_mcast_alloc(dev, 0); |
| 869 | if (!nmcast) { |
| 870 | ipoib_warn(priv, "unable to allocate memory for multicast structure\n"); |
| 871 | continue; |
| 872 | } |
| 873 | |
| 874 | set_bit(IPOIB_MCAST_FLAG_FOUND, &nmcast->flags); |
| 875 | |
| 876 | nmcast->mcmember.mgid = mgid; |
| 877 | |
| 878 | if (mcast) { |
| 879 | /* Destroy the send only entry */ |
| 880 | list_del(&mcast->list); |
| 881 | list_add_tail(&mcast->list, &remove_list); |
| 882 | |
| 883 | rb_replace_node(&mcast->rb_node, |
| 884 | &nmcast->rb_node, |
| 885 | &priv->multicast_tree); |
| 886 | } else |
| 887 | __ipoib_mcast_add(dev, nmcast); |
| 888 | |
| 889 | list_add_tail(&nmcast->list, &priv->multicast_list); |
| 890 | } |
| 891 | |
| 892 | if (mcast) |
| 893 | set_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); |
| 894 | } |
| 895 | |
| 896 | /* Remove all of the entries don't exist anymore */ |
| 897 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { |
| 898 | if (!test_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags) && |
| 899 | !test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { |
| 900 | ipoib_dbg_mcast(priv, "deleting multicast group " IPOIB_GID_FMT "\n", |
| 901 | IPOIB_GID_ARG(mcast->mcmember.mgid)); |
| 902 | |
| 903 | rb_erase(&mcast->rb_node, &priv->multicast_tree); |
| 904 | |
| 905 | /* Move to the remove list */ |
| 906 | list_del(&mcast->list); |
| 907 | list_add_tail(&mcast->list, &remove_list); |
| 908 | } |
| 909 | } |
Michael S. Tsirkin | 78bfe0b | 2006-01-11 11:47:34 -0800 | [diff] [blame] | 910 | |
| 911 | spin_unlock(&priv->lock); |
| 912 | spin_unlock_irqrestore(&dev->xmit_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
| 914 | /* We have to cancel outside of the spinlock */ |
| 915 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { |
| 916 | ipoib_mcast_leave(mcast->dev, mcast); |
| 917 | ipoib_mcast_free(mcast); |
| 918 | } |
| 919 | |
| 920 | if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) |
| 921 | ipoib_mcast_start_thread(dev); |
| 922 | } |
| 923 | |
Roland Dreier | 8ae5a8a | 2005-11-02 20:51:01 -0800 | [diff] [blame] | 924 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
| 925 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev) |
| 927 | { |
| 928 | struct ipoib_mcast_iter *iter; |
| 929 | |
| 930 | iter = kmalloc(sizeof *iter, GFP_KERNEL); |
| 931 | if (!iter) |
| 932 | return NULL; |
| 933 | |
| 934 | iter->dev = dev; |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 935 | memset(iter->mgid.raw, 0, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | |
| 937 | if (ipoib_mcast_iter_next(iter)) { |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 938 | kfree(iter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | return NULL; |
| 940 | } |
| 941 | |
| 942 | return iter; |
| 943 | } |
| 944 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter) |
| 946 | { |
| 947 | struct ipoib_dev_priv *priv = netdev_priv(iter->dev); |
| 948 | struct rb_node *n; |
| 949 | struct ipoib_mcast *mcast; |
| 950 | int ret = 1; |
| 951 | |
| 952 | spin_lock_irq(&priv->lock); |
| 953 | |
| 954 | n = rb_first(&priv->multicast_tree); |
| 955 | |
| 956 | while (n) { |
| 957 | mcast = rb_entry(n, struct ipoib_mcast, rb_node); |
| 958 | |
| 959 | if (memcmp(iter->mgid.raw, mcast->mcmember.mgid.raw, |
| 960 | sizeof (union ib_gid)) < 0) { |
| 961 | iter->mgid = mcast->mcmember.mgid; |
| 962 | iter->created = mcast->created; |
| 963 | iter->queuelen = skb_queue_len(&mcast->pkt_queue); |
| 964 | iter->complete = !!mcast->ah; |
| 965 | iter->send_only = !!(mcast->flags & (1 << IPOIB_MCAST_FLAG_SENDONLY)); |
| 966 | |
| 967 | ret = 0; |
| 968 | |
| 969 | break; |
| 970 | } |
| 971 | |
| 972 | n = rb_next(n); |
| 973 | } |
| 974 | |
| 975 | spin_unlock_irq(&priv->lock); |
| 976 | |
| 977 | return ret; |
| 978 | } |
| 979 | |
| 980 | void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, |
| 981 | union ib_gid *mgid, |
| 982 | unsigned long *created, |
| 983 | unsigned int *queuelen, |
| 984 | unsigned int *complete, |
| 985 | unsigned int *send_only) |
| 986 | { |
| 987 | *mgid = iter->mgid; |
| 988 | *created = iter->created; |
| 989 | *queuelen = iter->queuelen; |
| 990 | *complete = iter->complete; |
| 991 | *send_only = iter->send_only; |
| 992 | } |
Roland Dreier | 8ae5a8a | 2005-11-02 20:51:01 -0800 | [diff] [blame] | 993 | |
| 994 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ |