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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | */ |
| 34 | |
| 35 | #include <linux/skbuff.h> |
| 36 | #include <linux/rtnetlink.h> |
Paul Gortmaker | fec14d2 | 2011-08-30 12:32:52 -0400 | [diff] [blame] | 37 | #include <linux/moduleparam.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <linux/ip.h> |
| 39 | #include <linux/in.h> |
| 40 | #include <linux/igmp.h> |
| 41 | #include <linux/inetdevice.h> |
| 42 | #include <linux/delay.h> |
| 43 | #include <linux/completion.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 44 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | struct ipoib_mcast_iter { |
| 59 | struct net_device *dev; |
| 60 | union ib_gid mgid; |
| 61 | unsigned long created; |
| 62 | unsigned int queuelen; |
| 63 | unsigned int complete; |
| 64 | unsigned int send_only; |
| 65 | }; |
| 66 | |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 67 | /* |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 68 | * This should be called with the priv->lock held |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 69 | */ |
| 70 | static void __ipoib_mcast_schedule_join_thread(struct ipoib_dev_priv *priv, |
| 71 | struct ipoib_mcast *mcast, |
| 72 | bool delay) |
| 73 | { |
Erez Shitrit | 0e5544d | 2015-04-02 13:39:04 +0300 | [diff] [blame] | 74 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 75 | return; |
| 76 | |
| 77 | /* |
| 78 | * We will be scheduling *something*, so cancel whatever is |
| 79 | * currently scheduled first |
| 80 | */ |
| 81 | cancel_delayed_work(&priv->mcast_task); |
| 82 | if (mcast && delay) { |
| 83 | /* |
| 84 | * We had a failure and want to schedule a retry later |
| 85 | */ |
| 86 | mcast->backoff *= 2; |
| 87 | if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS) |
| 88 | mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS; |
| 89 | mcast->delay_until = jiffies + (mcast->backoff * HZ); |
| 90 | /* |
| 91 | * Mark this mcast for its delay, but restart the |
| 92 | * task immediately. The join task will make sure to |
| 93 | * clear out all entries without delays, and then |
| 94 | * schedule itself to run again when the earliest |
| 95 | * delay expires |
| 96 | */ |
| 97 | queue_delayed_work(priv->wq, &priv->mcast_task, 0); |
| 98 | } else if (delay) { |
| 99 | /* |
| 100 | * Special case of retrying after a failure to |
| 101 | * allocate the broadcast multicast group, wait |
| 102 | * 1 second and try again |
| 103 | */ |
| 104 | queue_delayed_work(priv->wq, &priv->mcast_task, HZ); |
| 105 | } else |
| 106 | queue_delayed_work(priv->wq, &priv->mcast_task, 0); |
| 107 | } |
| 108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | static void ipoib_mcast_free(struct ipoib_mcast *mcast) |
| 110 | { |
| 111 | struct net_device *dev = mcast->dev; |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 112 | int tx_dropped = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 114 | ipoib_dbg_mcast(netdev_priv(dev), "deleting multicast group %pI6\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 115 | mcast->mcmember.mgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
Shlomo Pongratz | b63b70d | 2012-07-24 17:05:22 +0000 | [diff] [blame] | 117 | /* remove all neigh connected to this mcast */ |
| 118 | ipoib_del_neighs_by_gid(dev, mcast->mcmember.mgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | if (mcast->ah) |
| 121 | ipoib_put_ah(mcast->ah); |
| 122 | |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 123 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
| 124 | ++tx_dropped; |
Roland Dreier | 8c608a3 | 2005-11-07 10:49:38 -0800 | [diff] [blame] | 125 | dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue)); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 126 | } |
| 127 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 128 | netif_tx_lock_bh(dev); |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 129 | dev->stats.tx_dropped += tx_dropped; |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 130 | netif_tx_unlock_bh(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
| 132 | kfree(mcast); |
| 133 | } |
| 134 | |
| 135 | static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev, |
| 136 | int can_sleep) |
| 137 | { |
| 138 | struct ipoib_mcast *mcast; |
| 139 | |
Roland Dreier | de6eb66 | 2005-11-02 07:23:14 -0800 | [diff] [blame] | 140 | mcast = kzalloc(sizeof *mcast, can_sleep ? GFP_KERNEL : GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | if (!mcast) |
| 142 | return NULL; |
| 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | mcast->dev = dev; |
| 145 | mcast->created = jiffies; |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 146 | mcast->delay_until = jiffies; |
Hal Rosenstock | ce5b65c | 2005-09-18 13:47:53 -0700 | [diff] [blame] | 147 | mcast->backoff = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
| 149 | INIT_LIST_HEAD(&mcast->list); |
| 150 | INIT_LIST_HEAD(&mcast->neigh_list); |
| 151 | skb_queue_head_init(&mcast->pkt_queue); |
| 152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | return mcast; |
| 154 | } |
| 155 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 156 | static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | { |
| 158 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 159 | struct rb_node *n = priv->multicast_tree.rb_node; |
| 160 | |
| 161 | while (n) { |
| 162 | struct ipoib_mcast *mcast; |
| 163 | int ret; |
| 164 | |
| 165 | mcast = rb_entry(n, struct ipoib_mcast, rb_node); |
| 166 | |
Jack Morgenstein | 37c22a7 | 2006-05-29 19:14:05 +0300 | [diff] [blame] | 167 | ret = memcmp(mgid, mcast->mcmember.mgid.raw, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | sizeof (union ib_gid)); |
| 169 | if (ret < 0) |
| 170 | n = n->rb_left; |
| 171 | else if (ret > 0) |
| 172 | n = n->rb_right; |
| 173 | else |
| 174 | return mcast; |
| 175 | } |
| 176 | |
| 177 | return NULL; |
| 178 | } |
| 179 | |
| 180 | static int __ipoib_mcast_add(struct net_device *dev, struct ipoib_mcast *mcast) |
| 181 | { |
| 182 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 183 | struct rb_node **n = &priv->multicast_tree.rb_node, *pn = NULL; |
| 184 | |
| 185 | while (*n) { |
| 186 | struct ipoib_mcast *tmcast; |
| 187 | int ret; |
| 188 | |
| 189 | pn = *n; |
| 190 | tmcast = rb_entry(pn, struct ipoib_mcast, rb_node); |
| 191 | |
| 192 | ret = memcmp(mcast->mcmember.mgid.raw, tmcast->mcmember.mgid.raw, |
| 193 | sizeof (union ib_gid)); |
| 194 | if (ret < 0) |
| 195 | n = &pn->rb_left; |
| 196 | else if (ret > 0) |
| 197 | n = &pn->rb_right; |
| 198 | else |
| 199 | return -EEXIST; |
| 200 | } |
| 201 | |
| 202 | rb_link_node(&mcast->rb_node, pn, n); |
| 203 | rb_insert_color(&mcast->rb_node, &priv->multicast_tree); |
| 204 | |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast, |
| 209 | struct ib_sa_mcmember_rec *mcmember) |
| 210 | { |
| 211 | struct net_device *dev = mcast->dev; |
| 212 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Eli Cohen | 7343b23 | 2006-02-27 20:47:43 -0800 | [diff] [blame] | 213 | struct ipoib_ah *ah; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | int ret; |
Eli Cohen | d0de136 | 2008-07-14 23:48:50 -0700 | [diff] [blame] | 215 | int set_qkey = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
| 217 | mcast->mcmember = *mcmember; |
| 218 | |
Patrick McHardy | bea1e22 | 2012-08-30 07:01:30 +0000 | [diff] [blame] | 219 | /* Set the multicast MTU and cached Q_Key before we attach if it's |
| 220 | * the broadcast group. |
| 221 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | if (!memcmp(mcast->mcmember.mgid.raw, priv->dev->broadcast + 4, |
| 223 | sizeof (union ib_gid))) { |
Jack Morgenstein | e1d50dc | 2008-05-20 15:41:09 -0700 | [diff] [blame] | 224 | spin_lock_irq(&priv->lock); |
| 225 | if (!priv->broadcast) { |
| 226 | spin_unlock_irq(&priv->lock); |
| 227 | return -EAGAIN; |
| 228 | } |
Erez Shitrit | 3fd0605 | 2015-04-02 13:39:01 +0300 | [diff] [blame] | 229 | /*update priv member according to the new mcast*/ |
| 230 | priv->broadcast->mcmember.qkey = mcmember->qkey; |
| 231 | priv->broadcast->mcmember.mtu = mcmember->mtu; |
| 232 | priv->broadcast->mcmember.traffic_class = mcmember->traffic_class; |
| 233 | priv->broadcast->mcmember.rate = mcmember->rate; |
| 234 | priv->broadcast->mcmember.sl = mcmember->sl; |
| 235 | priv->broadcast->mcmember.flow_label = mcmember->flow_label; |
| 236 | priv->broadcast->mcmember.hop_limit = mcmember->hop_limit; |
| 237 | /* assume if the admin and the mcast are the same both can be changed */ |
| 238 | if (priv->mcast_mtu == priv->admin_mtu) |
| 239 | priv->admin_mtu = |
| 240 | priv->mcast_mtu = |
| 241 | IPOIB_UD_MTU(ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu)); |
| 242 | else |
| 243 | priv->mcast_mtu = |
| 244 | IPOIB_UD_MTU(ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu)); |
| 245 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | priv->qkey = be32_to_cpu(priv->broadcast->mcmember.qkey); |
Jack Morgenstein | e1d50dc | 2008-05-20 15:41:09 -0700 | [diff] [blame] | 247 | spin_unlock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | priv->tx_wr.wr.ud.remote_qkey = priv->qkey; |
Eli Cohen | d0de136 | 2008-07-14 23:48:50 -0700 | [diff] [blame] | 249 | set_qkey = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { |
| 253 | if (test_and_set_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 254 | ipoib_warn(priv, "multicast group %pI6 already attached\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 255 | mcast->mcmember.mgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
| 257 | return 0; |
| 258 | } |
| 259 | |
| 260 | ret = ipoib_mcast_attach(dev, be16_to_cpu(mcast->mcmember.mlid), |
Eli Cohen | d0de136 | 2008-07-14 23:48:50 -0700 | [diff] [blame] | 261 | &mcast->mcmember.mgid, set_qkey); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | if (ret < 0) { |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 263 | ipoib_warn(priv, "couldn't attach QP to multicast group %pI6\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 264 | mcast->mcmember.mgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | |
| 266 | clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags); |
| 267 | return ret; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | { |
| 272 | struct ib_ah_attr av = { |
| 273 | .dlid = be16_to_cpu(mcast->mcmember.mlid), |
| 274 | .port_num = priv->port, |
| 275 | .sl = mcast->mcmember.sl, |
| 276 | .ah_flags = IB_AH_GRH, |
Jack Morgenstein | bf6a9e3 | 2006-04-10 09:43:47 -0700 | [diff] [blame] | 277 | .static_rate = mcast->mcmember.rate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | .grh = { |
| 279 | .flow_label = be32_to_cpu(mcast->mcmember.flow_label), |
| 280 | .hop_limit = mcast->mcmember.hop_limit, |
| 281 | .sgid_index = 0, |
| 282 | .traffic_class = mcast->mcmember.traffic_class |
| 283 | } |
| 284 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | av.grh.dgid = mcast->mcmember.mgid; |
| 286 | |
Eli Cohen | 7343b23 | 2006-02-27 20:47:43 -0800 | [diff] [blame] | 287 | ah = ipoib_create_ah(dev, priv->pd, &av); |
Mike Marciniszyn | 3874397 | 2011-11-21 08:43:54 -0500 | [diff] [blame] | 288 | if (IS_ERR(ah)) { |
| 289 | ipoib_warn(priv, "ib_address_create failed %ld\n", |
| 290 | -PTR_ERR(ah)); |
| 291 | /* use original error */ |
| 292 | return PTR_ERR(ah); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | } else { |
Or Gerlitz | 624d01f | 2006-07-24 10:42:00 +0300 | [diff] [blame] | 294 | spin_lock_irq(&priv->lock); |
| 295 | mcast->ah = ah; |
| 296 | spin_unlock_irq(&priv->lock); |
| 297 | |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 298 | ipoib_dbg_mcast(priv, "MGID %pI6 AV %p, LID 0x%04x, SL %d\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 299 | mcast->mcmember.mgid.raw, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | mcast->ah->ah, |
| 301 | be16_to_cpu(mcast->mcmember.mlid), |
| 302 | mcast->mcmember.sl); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | /* actually send any queued packets */ |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 307 | netif_tx_lock_bh(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
| 309 | struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue); |
David S. Miller | 69cce1d | 2011-07-17 23:09:49 -0700 | [diff] [blame] | 310 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 311 | netif_tx_unlock_bh(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | skb->dev = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | if (dev_queue_xmit(skb)) |
| 315 | ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n"); |
Roland Dreier | 936d7de | 2012-02-07 14:51:21 +0000 | [diff] [blame] | 316 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 317 | netif_tx_lock_bh(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | } |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 319 | netif_tx_unlock_bh(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
Yossi Etigin | e8224e4 | 2008-09-16 11:57:45 -0700 | [diff] [blame] | 324 | void ipoib_mcast_carrier_on_task(struct work_struct *work) |
| 325 | { |
| 326 | struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, |
| 327 | carrier_on_task); |
Moni Shoua | 5ee95120 | 2009-09-24 12:01:05 -0700 | [diff] [blame] | 328 | struct ib_port_attr attr; |
Yossi Etigin | e8224e4 | 2008-09-16 11:57:45 -0700 | [diff] [blame] | 329 | |
Moni Shoua | 5ee95120 | 2009-09-24 12:01:05 -0700 | [diff] [blame] | 330 | if (ib_query_port(priv->ca, priv->port, &attr) || |
| 331 | attr.state != IB_PORT_ACTIVE) { |
| 332 | ipoib_dbg(priv, "Keeping carrier off until IB port is active\n"); |
| 333 | return; |
| 334 | } |
| 335 | |
Doug Ledford | 894021a | 2015-02-21 19:27:02 -0500 | [diff] [blame] | 336 | /* |
| 337 | * Take rtnl_lock to avoid racing with ipoib_stop() and |
| 338 | * turning the carrier back on while a device is being |
| 339 | * removed. However, ipoib_stop() will attempt to flush |
| 340 | * the workqueue while holding the rtnl lock, so loop |
| 341 | * on trylock until either we get the lock or we see |
| 342 | * FLAG_OPER_UP go away as that signals that we are bailing |
| 343 | * and can safely ignore the carrier on work. |
| 344 | */ |
| 345 | while (!rtnl_trylock()) { |
| 346 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) |
| 347 | return; |
| 348 | else |
| 349 | msleep(20); |
| 350 | } |
Doug Ledford | c84ca6d | 2015-02-21 19:27:01 -0500 | [diff] [blame] | 351 | if (!ipoib_cm_admin_enabled(priv->dev)) |
| 352 | dev_set_mtu(priv->dev, min(priv->mcast_mtu, priv->admin_mtu)); |
Yossi Etigin | e8224e4 | 2008-09-16 11:57:45 -0700 | [diff] [blame] | 353 | netif_carrier_on(priv->dev); |
| 354 | rtnl_unlock(); |
| 355 | } |
| 356 | |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 357 | static int ipoib_mcast_join_complete(int status, |
| 358 | struct ib_sa_multicast *multicast) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | { |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 360 | struct ipoib_mcast *mcast = multicast->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | struct net_device *dev = mcast->dev; |
| 362 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 363 | |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 364 | ipoib_dbg_mcast(priv, "%sjoin completion for %pI6 (status %d)\n", |
| 365 | test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) ? |
| 366 | "sendonly " : "", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 367 | mcast->mcmember.mgid.raw, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 369 | /* We trap for port events ourselves. */ |
Roland Dreier | e7a623d | 2015-01-30 15:39:20 -0800 | [diff] [blame] | 370 | if (status == -ENETRESET) { |
| 371 | status = 0; |
Erez Shitrit | a9c8ba5 | 2013-10-16 17:37:51 +0300 | [diff] [blame] | 372 | goto out; |
Roland Dreier | e7a623d | 2015-01-30 15:39:20 -0800 | [diff] [blame] | 373 | } |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 374 | |
| 375 | if (!status) |
| 376 | status = ipoib_mcast_join_finish(mcast, &multicast->rec); |
| 377 | |
| 378 | if (!status) { |
Hal Rosenstock | ce5b65c | 2005-09-18 13:47:53 -0700 | [diff] [blame] | 379 | mcast->backoff = 1; |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 380 | mcast->delay_until = jiffies; |
Shirley Ma | 55c9add | 2007-03-08 14:59:30 -0800 | [diff] [blame] | 381 | |
Yossi Etigin | e8224e4 | 2008-09-16 11:57:45 -0700 | [diff] [blame] | 382 | /* |
Doug Ledford | 0b39578 | 2015-02-21 19:27:03 -0500 | [diff] [blame] | 383 | * Defer carrier on work to priv->wq to avoid a |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 384 | * deadlock on rtnl_lock here. Requeue our multicast |
| 385 | * work too, which will end up happening right after |
| 386 | * our carrier on task work and will allow us to |
| 387 | * send out all of the non-broadcast joins |
Yossi Etigin | e8224e4 | 2008-09-16 11:57:45 -0700 | [diff] [blame] | 388 | */ |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 389 | if (mcast == priv->broadcast) { |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 390 | spin_lock_irq(&priv->lock); |
Doug Ledford | 0b39578 | 2015-02-21 19:27:03 -0500 | [diff] [blame] | 391 | queue_work(priv->wq, &priv->carrier_on_task); |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 392 | __ipoib_mcast_schedule_join_thread(priv, NULL, 0); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 393 | goto out_locked; |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 394 | } |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 395 | } else { |
Jason Gunthorpe | d1178cb | 2015-08-21 17:34:13 -0600 | [diff] [blame] | 396 | bool silent_fail = |
| 397 | test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) && |
| 398 | status == -EINVAL; |
| 399 | |
| 400 | if (mcast->logcount < 20) { |
| 401 | if (status == -ETIMEDOUT || status == -EAGAIN || |
| 402 | silent_fail) { |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 403 | ipoib_dbg_mcast(priv, "%smulticast join failed for %pI6, status %d\n", |
| 404 | test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) ? "sendonly " : "", |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 405 | mcast->mcmember.mgid.raw, status); |
| 406 | } else { |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 407 | ipoib_warn(priv, "%smulticast join failed for %pI6, status %d\n", |
| 408 | test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) ? "sendonly " : "", |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 409 | mcast->mcmember.mgid.raw, status); |
| 410 | } |
Jason Gunthorpe | d1178cb | 2015-08-21 17:34:13 -0600 | [diff] [blame] | 411 | |
| 412 | if (!silent_fail) |
| 413 | mcast->logcount++; |
Roland Dreier | e7a623d | 2015-01-30 15:39:20 -0800 | [diff] [blame] | 414 | } |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 415 | |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 416 | if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) && |
| 417 | mcast->backoff >= 2) { |
| 418 | /* |
| 419 | * We only retry sendonly joins once before we drop |
| 420 | * the packet and quit trying to deal with the |
| 421 | * group. However, we leave the group in the |
| 422 | * mcast list as an unjoined group. If we want to |
| 423 | * try joining again, we simply queue up a packet |
| 424 | * and restart the join thread. The empty queue |
| 425 | * is why the join thread ignores this group. |
| 426 | */ |
| 427 | mcast->backoff = 1; |
| 428 | netif_tx_lock_bh(dev); |
| 429 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
| 430 | ++dev->stats.tx_dropped; |
| 431 | dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue)); |
| 432 | } |
| 433 | netif_tx_unlock_bh(dev); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 434 | } else { |
| 435 | spin_lock_irq(&priv->lock); |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 436 | /* Requeue this join task with a backoff delay */ |
| 437 | __ipoib_mcast_schedule_join_thread(priv, mcast, 1); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 438 | goto out_locked; |
| 439 | } |
Roland Dreier | e7a623d | 2015-01-30 15:39:20 -0800 | [diff] [blame] | 440 | } |
Roland Dreier | e7a623d | 2015-01-30 15:39:20 -0800 | [diff] [blame] | 441 | out: |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 442 | spin_lock_irq(&priv->lock); |
| 443 | out_locked: |
| 444 | /* |
| 445 | * Make sure to set mcast->mc before we clear the busy flag to avoid |
| 446 | * racing with code that checks for BUSY before checking mcast->mc |
| 447 | */ |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 448 | if (status) |
| 449 | mcast->mc = NULL; |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 450 | else |
| 451 | mcast->mc = multicast; |
| 452 | clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); |
| 453 | spin_unlock_irq(&priv->lock); |
Roland Dreier | e7a623d | 2015-01-30 15:39:20 -0800 | [diff] [blame] | 454 | complete(&mcast->done); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 455 | |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 456 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | } |
| 458 | |
Doug Ledford | c3acdc0 | 2015-09-03 17:05:58 -0400 | [diff] [blame] | 459 | static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | { |
| 461 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 462 | struct ib_sa_multicast *multicast; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | struct ib_sa_mcmember_rec rec = { |
| 464 | .join_state = 1 |
| 465 | }; |
| 466 | ib_sa_comp_mask comp_mask; |
| 467 | int ret = 0; |
| 468 | |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 469 | ipoib_dbg_mcast(priv, "joining MGID %pI6\n", mcast->mcmember.mgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Doug Ledford | c3acdc0 | 2015-09-03 17:05:58 -0400 | [diff] [blame] | 481 | if (mcast != priv->broadcast) { |
| 482 | /* |
| 483 | * RFC 4391: |
| 484 | * The MGID MUST use the same P_Key, Q_Key, SL, MTU, |
| 485 | * and HopLimit as those used in the broadcast-GID. The rest |
| 486 | * of attributes SHOULD follow the values used in the |
| 487 | * broadcast-GID as well. |
| 488 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | comp_mask |= |
Roland Dreier | d0df6d6 | 2006-09-22 15:22:56 -0700 | [diff] [blame] | 490 | IB_SA_MCMEMBER_REC_QKEY | |
| 491 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | |
| 492 | IB_SA_MCMEMBER_REC_MTU | |
| 493 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS | |
| 494 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | |
| 495 | IB_SA_MCMEMBER_REC_RATE | |
| 496 | IB_SA_MCMEMBER_REC_SL | |
| 497 | IB_SA_MCMEMBER_REC_FLOW_LABEL | |
| 498 | IB_SA_MCMEMBER_REC_HOP_LIMIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
| 500 | rec.qkey = priv->broadcast->mcmember.qkey; |
Roland Dreier | d0df6d6 | 2006-09-22 15:22:56 -0700 | [diff] [blame] | 501 | rec.mtu_selector = IB_SA_EQ; |
| 502 | rec.mtu = priv->broadcast->mcmember.mtu; |
| 503 | rec.traffic_class = priv->broadcast->mcmember.traffic_class; |
| 504 | rec.rate_selector = IB_SA_EQ; |
| 505 | rec.rate = priv->broadcast->mcmember.rate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | rec.sl = priv->broadcast->mcmember.sl; |
| 507 | rec.flow_label = priv->broadcast->mcmember.flow_label; |
Roland Dreier | d0df6d6 | 2006-09-22 15:22:56 -0700 | [diff] [blame] | 508 | rec.hop_limit = priv->broadcast->mcmember.hop_limit; |
Doug Ledford | c3acdc0 | 2015-09-03 17:05:58 -0400 | [diff] [blame] | 509 | |
| 510 | /* |
| 511 | * Historically Linux IPoIB has never properly supported SEND |
| 512 | * ONLY join. It emulated it by not providing all the required |
| 513 | * attributes, which is enough to prevent group creation and |
| 514 | * detect if there are full members or not. A major problem |
| 515 | * with supporting SEND ONLY is detecting when the group is |
| 516 | * auto-destroyed as IPoIB will cache the MLID.. |
| 517 | */ |
| 518 | #if 1 |
| 519 | if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) |
| 520 | comp_mask &= ~IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; |
| 521 | #else |
| 522 | if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) |
| 523 | rec.join_state = 4; |
| 524 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | } |
| 526 | |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 527 | multicast = ib_sa_join_multicast(&ipoib_sa_client, priv->ca, priv->port, |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 528 | &rec, comp_mask, GFP_KERNEL, |
| 529 | ipoib_mcast_join_complete, mcast); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 530 | if (IS_ERR(multicast)) { |
| 531 | ret = PTR_ERR(multicast); |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 532 | ipoib_warn(priv, "ib_sa_join_multicast failed, status %d\n", ret); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 533 | spin_lock_irq(&priv->lock); |
| 534 | /* Requeue this join task with a backoff delay */ |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 535 | __ipoib_mcast_schedule_join_thread(priv, mcast, 1); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 536 | clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); |
| 537 | spin_unlock_irq(&priv->lock); |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 538 | complete(&mcast->done); |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 539 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | } |
| 541 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 542 | void ipoib_mcast_join_task(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 544 | struct ipoib_dev_priv *priv = |
| 545 | container_of(work, struct ipoib_dev_priv, mcast_task.work); |
| 546 | struct net_device *dev = priv->dev; |
Erez Shitrit | 94232d9 | 2013-10-16 17:37:53 +0300 | [diff] [blame] | 547 | struct ib_port_attr port_attr; |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 548 | unsigned long delay_until = 0; |
| 549 | struct ipoib_mcast *mcast = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | |
Erez Shitrit | 0e5544d | 2015-04-02 13:39:04 +0300 | [diff] [blame] | 551 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | return; |
| 553 | |
Erez Shitrit | 94232d9 | 2013-10-16 17:37:53 +0300 | [diff] [blame] | 554 | if (ib_query_port(priv->ca, priv->port, &port_attr) || |
| 555 | port_attr.state != IB_PORT_ACTIVE) { |
| 556 | ipoib_dbg(priv, "port state is not ACTIVE (state = %d) suspending join task\n", |
| 557 | port_attr.state); |
| 558 | return; |
| 559 | } |
Alex Estrin | 68f9d83 | 2014-08-20 11:15:08 -0400 | [diff] [blame] | 560 | priv->local_lid = port_attr.lid; |
Erez Shitrit | 94232d9 | 2013-10-16 17:37:53 +0300 | [diff] [blame] | 561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid)) |
Michael S. Tsirkin | 24bd1e4 | 2007-05-18 16:12:54 +0300 | [diff] [blame] | 563 | ipoib_warn(priv, "ib_query_gid() failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | else |
| 565 | memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); |
| 566 | |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 567 | spin_lock_irq(&priv->lock); |
| 568 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) |
| 569 | goto out; |
| 570 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | if (!priv->broadcast) { |
Roland Dreier | 20b8338 | 2006-02-11 12:22:12 -0800 | [diff] [blame] | 572 | struct ipoib_mcast *broadcast; |
| 573 | |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 574 | broadcast = ipoib_mcast_alloc(dev, 0); |
Roland Dreier | 20b8338 | 2006-02-11 12:22:12 -0800 | [diff] [blame] | 575 | if (!broadcast) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | ipoib_warn(priv, "failed to allocate broadcast group\n"); |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 577 | /* |
| 578 | * Restart us after a 1 second delay to retry |
| 579 | * creating our broadcast group and attaching to |
| 580 | * it. Until this succeeds, this ipoib dev is |
| 581 | * completely stalled (multicast wise). |
| 582 | */ |
| 583 | __ipoib_mcast_schedule_join_thread(priv, NULL, 1); |
| 584 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | } |
| 586 | |
Roland Dreier | 20b8338 | 2006-02-11 12:22:12 -0800 | [diff] [blame] | 587 | memcpy(broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4, |
| 588 | sizeof (union ib_gid)); |
| 589 | priv->broadcast = broadcast; |
| 590 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | __ipoib_mcast_add(dev, priv->broadcast); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | } |
| 593 | |
| 594 | if (!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 595 | if (IS_ERR_OR_NULL(priv->broadcast->mc) && |
| 596 | !test_bit(IPOIB_MCAST_FLAG_BUSY, &priv->broadcast->flags)) { |
| 597 | mcast = priv->broadcast; |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 598 | if (mcast->backoff > 1 && |
| 599 | time_before(jiffies, mcast->delay_until)) { |
| 600 | delay_until = mcast->delay_until; |
| 601 | mcast = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | } |
| 603 | } |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 604 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | } |
| 606 | |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 607 | /* |
| 608 | * We'll never get here until the broadcast group is both allocated |
| 609 | * and attached |
| 610 | */ |
| 611 | list_for_each_entry(mcast, &priv->multicast_list, list) { |
| 612 | if (IS_ERR_OR_NULL(mcast->mc) && |
| 613 | !test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags) && |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 614 | (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) || |
| 615 | !skb_queue_empty(&mcast->pkt_queue))) { |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 616 | if (mcast->backoff == 1 || |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 617 | time_after_eq(jiffies, mcast->delay_until)) { |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 618 | /* Found the next unjoined group */ |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 619 | init_completion(&mcast->done); |
| 620 | set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 621 | spin_unlock_irq(&priv->lock); |
Doug Ledford | c3acdc0 | 2015-09-03 17:05:58 -0400 | [diff] [blame] | 622 | ipoib_mcast_join(dev, mcast); |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 623 | spin_lock_irq(&priv->lock); |
| 624 | } else if (!delay_until || |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 625 | time_before(mcast->delay_until, delay_until)) |
| 626 | delay_until = mcast->delay_until; |
| 627 | } |
| 628 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 630 | mcast = NULL; |
| 631 | ipoib_dbg_mcast(priv, "successfully started all multicast joins\n"); |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 632 | |
| 633 | out: |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 634 | if (delay_until) { |
| 635 | cancel_delayed_work(&priv->mcast_task); |
| 636 | queue_delayed_work(priv->wq, &priv->mcast_task, |
| 637 | delay_until - jiffies); |
| 638 | } |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 639 | if (mcast) { |
| 640 | init_completion(&mcast->done); |
| 641 | set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); |
| 642 | } |
| 643 | spin_unlock_irq(&priv->lock); |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 644 | if (mcast) |
Doug Ledford | c3acdc0 | 2015-09-03 17:05:58 -0400 | [diff] [blame] | 645 | ipoib_mcast_join(dev, mcast); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | } |
| 647 | |
| 648 | int ipoib_mcast_start_thread(struct net_device *dev) |
| 649 | { |
| 650 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 651 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
| 653 | ipoib_dbg_mcast(priv, "starting multicast thread\n"); |
| 654 | |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 655 | spin_lock_irqsave(&priv->lock, flags); |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 656 | __ipoib_mcast_schedule_join_thread(priv, NULL, 0); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 657 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | |
| 659 | return 0; |
| 660 | } |
| 661 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 662 | int ipoib_mcast_stop_thread(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | { |
| 664 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 665 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
| 667 | ipoib_dbg_mcast(priv, "stopping multicast thread\n"); |
| 668 | |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 669 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | cancel_delayed_work(&priv->mcast_task); |
Doug Ledford | 1c0453d | 2015-02-21 19:27:07 -0500 | [diff] [blame] | 671 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 673 | flush_workqueue(priv->wq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | return 0; |
| 676 | } |
| 677 | |
| 678 | static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast) |
| 679 | { |
| 680 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | int ret = 0; |
| 682 | |
Sean Hefty | e07832b | 2007-03-19 14:31:36 -0800 | [diff] [blame] | 683 | if (test_and_clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 684 | ipoib_warn(priv, "ipoib_mcast_leave on an in-flight join\n"); |
| 685 | |
| 686 | if (!IS_ERR_OR_NULL(mcast->mc)) |
Sean Hefty | e07832b | 2007-03-19 14:31:36 -0800 | [diff] [blame] | 687 | ib_sa_free_multicast(mcast->mc); |
| 688 | |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 689 | if (test_and_clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 690 | ipoib_dbg_mcast(priv, "leaving MGID %pI6\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 691 | mcast->mcmember.mgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 693 | /* Remove ourselves from the multicast group */ |
Roland Dreier | 9eae554 | 2008-07-14 23:48:50 -0700 | [diff] [blame] | 694 | ret = ib_detach_mcast(priv->qp, &mcast->mcmember.mgid, |
| 695 | be16_to_cpu(mcast->mcmember.mlid)); |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 696 | if (ret) |
Roland Dreier | 9eae554 | 2008-07-14 23:48:50 -0700 | [diff] [blame] | 697 | ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret); |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 698 | } else if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) |
| 699 | ipoib_dbg(priv, "leaving with no mcmember but not a " |
| 700 | "SENDONLY join\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | return 0; |
| 703 | } |
| 704 | |
Shlomo Pongratz | b63b70d | 2012-07-24 17:05:22 +0000 | [diff] [blame] | 705 | void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | { |
| 707 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 708 | struct ipoib_mcast *mcast; |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 709 | unsigned long flags; |
Shlomo Pongratz | b63b70d | 2012-07-24 17:05:22 +0000 | [diff] [blame] | 710 | void *mgid = daddr + 4; |
David S. Miller | 700db99 | 2012-07-05 21:08:05 -0700 | [diff] [blame] | 711 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 712 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
Or Gerlitz | b3e2749 | 2008-03-11 16:10:02 +0200 | [diff] [blame] | 714 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags) || |
Roland Dreier | 20b8338 | 2006-02-11 12:22:12 -0800 | [diff] [blame] | 715 | !priv->broadcast || |
| 716 | !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 717 | ++dev->stats.tx_dropped; |
Michael S. Tsirkin | 479a079 | 2006-02-07 16:37:08 -0800 | [diff] [blame] | 718 | dev_kfree_skb_any(skb); |
| 719 | goto unlock; |
| 720 | } |
| 721 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | mcast = __ipoib_mcast_find(dev, mgid); |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 723 | if (!mcast || !mcast->ah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | if (!mcast) { |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 725 | /* Let's create a new send only group now */ |
| 726 | ipoib_dbg_mcast(priv, "setting up send only multicast group for %pI6\n", |
| 727 | mgid); |
| 728 | |
| 729 | mcast = ipoib_mcast_alloc(dev, 0); |
| 730 | if (!mcast) { |
| 731 | ipoib_warn(priv, "unable to allocate memory " |
| 732 | "for multicast structure\n"); |
| 733 | ++dev->stats.tx_dropped; |
| 734 | dev_kfree_skb_any(skb); |
| 735 | goto unlock; |
| 736 | } |
| 737 | |
| 738 | set_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags); |
| 739 | memcpy(mcast->mcmember.mgid.raw, mgid, |
| 740 | sizeof (union ib_gid)); |
| 741 | __ipoib_mcast_add(dev, mcast); |
| 742 | list_add_tail(&mcast->list, &priv->multicast_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE) |
| 745 | skb_queue_tail(&mcast->pkt_queue, skb); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 746 | else { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 747 | ++dev->stats.tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | dev_kfree_skb_any(skb); |
Michael S. Tsirkin | b36f170 | 2006-01-17 12:19:40 -0800 | [diff] [blame] | 749 | } |
Doug Ledford | d2fe937 | 2015-02-21 19:27:06 -0500 | [diff] [blame] | 750 | if (!test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) { |
| 751 | __ipoib_mcast_schedule_join_thread(priv, NULL, 0); |
| 752 | } |
| 753 | } else { |
Shlomo Pongratz | b63b70d | 2012-07-24 17:05:22 +0000 | [diff] [blame] | 754 | struct ipoib_neigh *neigh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | |
Shlomo Pongratz | b63b70d | 2012-07-24 17:05:22 +0000 | [diff] [blame] | 756 | spin_unlock_irqrestore(&priv->lock, flags); |
| 757 | neigh = ipoib_neigh_get(dev, daddr); |
| 758 | spin_lock_irqsave(&priv->lock, flags); |
| 759 | if (!neigh) { |
Shlomo Pongratz | b63b70d | 2012-07-24 17:05:22 +0000 | [diff] [blame] | 760 | neigh = ipoib_neigh_alloc(daddr, dev); |
Shlomo Pongratz | b63b70d | 2012-07-24 17:05:22 +0000 | [diff] [blame] | 761 | if (neigh) { |
| 762 | kref_get(&mcast->ah->ref); |
| 763 | neigh->ah = mcast->ah; |
| 764 | list_add_tail(&neigh->list, &mcast->neigh_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | } |
| 766 | } |
Roland Dreier | 721d67c | 2009-09-05 20:23:40 -0700 | [diff] [blame] | 767 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN); |
Shlomo Pongratz | b63b70d | 2012-07-24 17:05:22 +0000 | [diff] [blame] | 769 | if (neigh) |
| 770 | ipoib_neigh_put(neigh); |
Roland Dreier | 721d67c | 2009-09-05 20:23:40 -0700 | [diff] [blame] | 771 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | } |
| 773 | |
Michael S. Tsirkin | 479a079 | 2006-02-07 16:37:08 -0800 | [diff] [blame] | 774 | unlock: |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 775 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | } |
| 777 | |
| 778 | void ipoib_mcast_dev_flush(struct net_device *dev) |
| 779 | { |
| 780 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 781 | LIST_HEAD(remove_list); |
Eli Cohen | 988bd50 | 2006-01-12 14:32:20 -0800 | [diff] [blame] | 782 | struct ipoib_mcast *mcast, *tmcast; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | unsigned long flags; |
| 784 | |
| 785 | ipoib_dbg_mcast(priv, "flushing multicast list\n"); |
| 786 | |
| 787 | spin_lock_irqsave(&priv->lock, flags); |
Eli Cohen | 988bd50 | 2006-01-12 14:32:20 -0800 | [diff] [blame] | 788 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { |
Eli Cohen | 988bd50 | 2006-01-12 14:32:20 -0800 | [diff] [blame] | 790 | list_del(&mcast->list); |
| 791 | rb_erase(&mcast->rb_node, &priv->multicast_tree); |
| 792 | list_add_tail(&mcast->list, &remove_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | } |
| 794 | |
| 795 | if (priv->broadcast) { |
Roland Dreier | 3cd9656 | 2006-09-22 15:22:46 -0700 | [diff] [blame] | 796 | rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree); |
Eli Cohen | 988bd50 | 2006-01-12 14:32:20 -0800 | [diff] [blame] | 797 | list_add_tail(&priv->broadcast->list, &remove_list); |
| 798 | priv->broadcast = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | } |
| 800 | |
| 801 | spin_unlock_irqrestore(&priv->lock, flags); |
| 802 | |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 803 | /* |
| 804 | * make sure the in-flight joins have finished before we attempt |
| 805 | * to leave |
| 806 | */ |
Erez Shitrit | a9c8ba5 | 2013-10-16 17:37:51 +0300 | [diff] [blame] | 807 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 808 | if (test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) |
Erez Shitrit | a9c8ba5 | 2013-10-16 17:37:51 +0300 | [diff] [blame] | 809 | wait_for_completion(&mcast->done); |
| 810 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { |
| 812 | ipoib_mcast_leave(dev, mcast); |
| 813 | ipoib_mcast_free(mcast); |
| 814 | } |
| 815 | } |
| 816 | |
Jiri Pirko | 3e4aa12 | 2010-03-22 03:21:39 +0000 | [diff] [blame] | 817 | static int ipoib_mcast_addr_is_valid(const u8 *addr, const u8 *broadcast) |
Jason Gunthorpe | 5e47596 | 2009-09-05 20:23:40 -0700 | [diff] [blame] | 818 | { |
Jason Gunthorpe | 5e47596 | 2009-09-05 20:23:40 -0700 | [diff] [blame] | 819 | /* reserved QPN, prefix, scope */ |
| 820 | if (memcmp(addr, broadcast, 6)) |
| 821 | return 0; |
| 822 | /* signature lower, pkey */ |
| 823 | if (memcmp(addr + 7, broadcast + 7, 3)) |
| 824 | return 0; |
| 825 | return 1; |
| 826 | } |
| 827 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 828 | void ipoib_mcast_restart_task(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 830 | struct ipoib_dev_priv *priv = |
| 831 | container_of(work, struct ipoib_dev_priv, restart_task); |
| 832 | struct net_device *dev = priv->dev; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 833 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | struct ipoib_mcast *mcast, *tmcast; |
| 835 | LIST_HEAD(remove_list); |
| 836 | unsigned long flags; |
Or Gerlitz | 335a64a5a | 2007-10-08 10:13:00 +0200 | [diff] [blame] | 837 | struct ib_sa_mcmember_rec rec; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 839 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) |
| 840 | /* |
| 841 | * shortcut...on shutdown flush is called next, just |
| 842 | * let it do all the work |
| 843 | */ |
| 844 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 846 | ipoib_dbg_mcast(priv, "restarting multicast task\n"); |
Roland Dreier | 4e0ab20 | 2015-01-30 15:38:46 -0800 | [diff] [blame] | 847 | |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 848 | local_irq_save(flags); |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 849 | netif_addr_lock(dev); |
Michael S. Tsirkin | 78bfe0b | 2006-01-11 11:47:34 -0800 | [diff] [blame] | 850 | spin_lock(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | |
| 852 | /* |
| 853 | * Unfortunately, the networking core only gives us a list of all of |
| 854 | * the multicast hardware addresses. We need to figure out which ones |
| 855 | * are new and which ones have been removed |
| 856 | */ |
| 857 | |
| 858 | /* Clear out the found flag */ |
| 859 | list_for_each_entry(mcast, &priv->multicast_list, list) |
| 860 | clear_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); |
| 861 | |
| 862 | /* Mark all of the entries that are found or don't exist */ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 863 | netdev_for_each_mc_addr(ha, dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | union ib_gid mgid; |
| 865 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 866 | if (!ipoib_mcast_addr_is_valid(ha->addr, dev->broadcast)) |
Jason Gunthorpe | 5e47596 | 2009-09-05 20:23:40 -0700 | [diff] [blame] | 867 | continue; |
| 868 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 869 | memcpy(mgid.raw, ha->addr + 4, sizeof mgid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | mcast = __ipoib_mcast_find(dev, &mgid); |
| 872 | if (!mcast || test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { |
| 873 | struct ipoib_mcast *nmcast; |
| 874 | |
Or Gerlitz | 335a64a5a | 2007-10-08 10:13:00 +0200 | [diff] [blame] | 875 | /* ignore group which is directly joined by userspace */ |
| 876 | if (test_bit(IPOIB_FLAG_UMCAST, &priv->flags) && |
| 877 | !ib_sa_get_mcmember_rec(priv->ca, priv->port, &mgid, &rec)) { |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 878 | ipoib_dbg_mcast(priv, "ignoring multicast entry for mgid %pI6\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 879 | mgid.raw); |
Or Gerlitz | 335a64a5a | 2007-10-08 10:13:00 +0200 | [diff] [blame] | 880 | continue; |
| 881 | } |
| 882 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | /* Not found or send-only group, let's add a new entry */ |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 884 | ipoib_dbg_mcast(priv, "adding multicast entry for mgid %pI6\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 885 | mgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | |
| 887 | nmcast = ipoib_mcast_alloc(dev, 0); |
| 888 | if (!nmcast) { |
| 889 | ipoib_warn(priv, "unable to allocate memory for multicast structure\n"); |
| 890 | continue; |
| 891 | } |
| 892 | |
| 893 | set_bit(IPOIB_MCAST_FLAG_FOUND, &nmcast->flags); |
| 894 | |
| 895 | nmcast->mcmember.mgid = mgid; |
| 896 | |
| 897 | if (mcast) { |
| 898 | /* Destroy the send only entry */ |
Akinobu Mita | 179e091 | 2006-06-26 00:24:41 -0700 | [diff] [blame] | 899 | list_move_tail(&mcast->list, &remove_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | |
| 901 | rb_replace_node(&mcast->rb_node, |
| 902 | &nmcast->rb_node, |
| 903 | &priv->multicast_tree); |
| 904 | } else |
| 905 | __ipoib_mcast_add(dev, nmcast); |
| 906 | |
| 907 | list_add_tail(&nmcast->list, &priv->multicast_list); |
| 908 | } |
| 909 | |
| 910 | if (mcast) |
| 911 | set_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); |
| 912 | } |
| 913 | |
| 914 | /* Remove all of the entries don't exist anymore */ |
| 915 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { |
| 916 | if (!test_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags) && |
| 917 | !test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 918 | ipoib_dbg_mcast(priv, "deleting multicast group %pI6\n", |
Harvey Harrison | fcace2f | 2008-10-28 22:37:22 -0700 | [diff] [blame] | 919 | mcast->mcmember.mgid.raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | |
| 921 | rb_erase(&mcast->rb_node, &priv->multicast_tree); |
| 922 | |
| 923 | /* Move to the remove list */ |
Akinobu Mita | 179e091 | 2006-06-26 00:24:41 -0700 | [diff] [blame] | 924 | list_move_tail(&mcast->list, &remove_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | } |
| 926 | } |
Michael S. Tsirkin | 78bfe0b | 2006-01-11 11:47:34 -0800 | [diff] [blame] | 927 | |
| 928 | spin_unlock(&priv->lock); |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 929 | netif_addr_unlock(dev); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 930 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 932 | /* |
| 933 | * make sure the in-flight joins have finished before we attempt |
| 934 | * to leave |
| 935 | */ |
| 936 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) |
| 937 | if (test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) |
| 938 | wait_for_completion(&mcast->done); |
| 939 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { |
| 941 | ipoib_mcast_leave(mcast->dev, mcast); |
| 942 | ipoib_mcast_free(mcast); |
| 943 | } |
Roland Dreier | 962121b | 2015-01-30 15:39:11 -0800 | [diff] [blame] | 944 | |
Doug Ledford | 6991141 | 2015-02-21 19:27:05 -0500 | [diff] [blame] | 945 | /* |
| 946 | * Double check that we are still up |
| 947 | */ |
| 948 | if (test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) { |
| 949 | spin_lock_irqsave(&priv->lock, flags); |
| 950 | __ipoib_mcast_schedule_join_thread(priv, NULL, 0); |
| 951 | spin_unlock_irqrestore(&priv->lock, flags); |
| 952 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | } |
| 954 | |
Roland Dreier | 8ae5a8a | 2005-11-02 20:51:01 -0800 | [diff] [blame] | 955 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
| 956 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev) |
| 958 | { |
| 959 | struct ipoib_mcast_iter *iter; |
| 960 | |
| 961 | iter = kmalloc(sizeof *iter, GFP_KERNEL); |
| 962 | if (!iter) |
| 963 | return NULL; |
| 964 | |
| 965 | iter->dev = dev; |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 966 | memset(iter->mgid.raw, 0, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | |
| 968 | if (ipoib_mcast_iter_next(iter)) { |
Roland Dreier | 1732b0e | 2005-11-07 10:33:11 -0800 | [diff] [blame] | 969 | kfree(iter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | return NULL; |
| 971 | } |
| 972 | |
| 973 | return iter; |
| 974 | } |
| 975 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter) |
| 977 | { |
| 978 | struct ipoib_dev_priv *priv = netdev_priv(iter->dev); |
| 979 | struct rb_node *n; |
| 980 | struct ipoib_mcast *mcast; |
| 981 | int ret = 1; |
| 982 | |
| 983 | spin_lock_irq(&priv->lock); |
| 984 | |
| 985 | n = rb_first(&priv->multicast_tree); |
| 986 | |
| 987 | while (n) { |
| 988 | mcast = rb_entry(n, struct ipoib_mcast, rb_node); |
| 989 | |
| 990 | if (memcmp(iter->mgid.raw, mcast->mcmember.mgid.raw, |
| 991 | sizeof (union ib_gid)) < 0) { |
| 992 | iter->mgid = mcast->mcmember.mgid; |
| 993 | iter->created = mcast->created; |
| 994 | iter->queuelen = skb_queue_len(&mcast->pkt_queue); |
| 995 | iter->complete = !!mcast->ah; |
| 996 | iter->send_only = !!(mcast->flags & (1 << IPOIB_MCAST_FLAG_SENDONLY)); |
| 997 | |
| 998 | ret = 0; |
| 999 | |
| 1000 | break; |
| 1001 | } |
| 1002 | |
| 1003 | n = rb_next(n); |
| 1004 | } |
| 1005 | |
| 1006 | spin_unlock_irq(&priv->lock); |
| 1007 | |
| 1008 | return ret; |
| 1009 | } |
| 1010 | |
| 1011 | void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, |
| 1012 | union ib_gid *mgid, |
| 1013 | unsigned long *created, |
| 1014 | unsigned int *queuelen, |
| 1015 | unsigned int *complete, |
| 1016 | unsigned int *send_only) |
| 1017 | { |
| 1018 | *mgid = iter->mgid; |
| 1019 | *created = iter->created; |
| 1020 | *queuelen = iter->queuelen; |
| 1021 | *complete = iter->complete; |
| 1022 | *send_only = iter->send_only; |
| 1023 | } |
Roland Dreier | 8ae5a8a | 2005-11-02 20:51:01 -0800 | [diff] [blame] | 1024 | |
| 1025 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ |