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) 2005 Mellanox Technologies. All rights reserved. |
| 5 | * Copyright (c) 2004, 2005 Voltaire, Inc. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * |
| 7 | * This software is available to you under a choice of one of two |
| 8 | * licenses. You may choose to be licensed under the terms of the GNU |
| 9 | * General Public License (GPL) Version 2, available from the file |
| 10 | * COPYING in the main directory of this source tree, or the |
| 11 | * OpenIB.org BSD license below: |
| 12 | * |
| 13 | * Redistribution and use in source and binary forms, with or |
| 14 | * without modification, are permitted provided that the following |
| 15 | * conditions are met: |
| 16 | * |
| 17 | * - Redistributions of source code must retain the above |
| 18 | * copyright notice, this list of conditions and the following |
| 19 | * disclaimer. |
| 20 | * |
| 21 | * - Redistributions in binary form must reproduce the above |
| 22 | * copyright notice, this list of conditions and the following |
| 23 | * disclaimer in the documentation and/or other materials |
| 24 | * provided with the distribution. |
| 25 | * |
| 26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 33 | * SOFTWARE. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | */ |
| 35 | |
| 36 | #include <linux/delay.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/dma-mapping.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 39 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 41 | #include <linux/ip.h> |
| 42 | #include <linux/tcp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
| 44 | #include "ipoib.h" |
| 45 | |
| 46 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA |
| 47 | static int data_debug_level; |
| 48 | |
| 49 | module_param(data_debug_level, int, 0644); |
| 50 | MODULE_PARM_DESC(data_debug_level, |
| 51 | "Enable data path debug tracing if > 0"); |
| 52 | #endif |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | struct ipoib_ah *ipoib_create_ah(struct net_device *dev, |
| 55 | struct ib_pd *pd, struct ib_ah_attr *attr) |
| 56 | { |
| 57 | struct ipoib_ah *ah; |
Mike Marciniszyn | 3874397 | 2011-11-21 08:43:54 -0500 | [diff] [blame] | 58 | struct ib_ah *vah; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
| 60 | ah = kmalloc(sizeof *ah, GFP_KERNEL); |
| 61 | if (!ah) |
Mike Marciniszyn | 3874397 | 2011-11-21 08:43:54 -0500 | [diff] [blame] | 62 | return ERR_PTR(-ENOMEM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| 64 | ah->dev = dev; |
| 65 | ah->last_send = 0; |
| 66 | kref_init(&ah->ref); |
| 67 | |
Mike Marciniszyn | 3874397 | 2011-11-21 08:43:54 -0500 | [diff] [blame] | 68 | vah = ib_create_ah(pd, attr); |
| 69 | if (IS_ERR(vah)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | kfree(ah); |
Mike Marciniszyn | 3874397 | 2011-11-21 08:43:54 -0500 | [diff] [blame] | 71 | ah = (struct ipoib_ah *)vah; |
| 72 | } else { |
| 73 | ah->ah = vah; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | ipoib_dbg(netdev_priv(dev), "Created ah %p\n", ah->ah); |
Mike Marciniszyn | 3874397 | 2011-11-21 08:43:54 -0500 | [diff] [blame] | 75 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
| 77 | return ah; |
| 78 | } |
| 79 | |
| 80 | void ipoib_free_ah(struct kref *kref) |
| 81 | { |
| 82 | struct ipoib_ah *ah = container_of(kref, struct ipoib_ah, ref); |
| 83 | struct ipoib_dev_priv *priv = netdev_priv(ah->dev); |
| 84 | |
| 85 | unsigned long flags; |
| 86 | |
Roland Dreier | 31c02e2 | 2006-06-17 20:37:34 -0700 | [diff] [blame] | 87 | spin_lock_irqsave(&priv->lock, flags); |
| 88 | list_add_tail(&ah->list, &priv->dead_ahs); |
| 89 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | } |
| 91 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 92 | static void ipoib_ud_dma_unmap_rx(struct ipoib_dev_priv *priv, |
| 93 | u64 mapping[IPOIB_UD_RX_SG]) |
| 94 | { |
Erez Shitrit | a44878d | 2015-04-02 13:39:00 +0300 | [diff] [blame] | 95 | ib_dma_unmap_single(priv->ca, mapping[0], |
| 96 | IPOIB_UD_BUF_SIZE(priv->max_ib_mtu), |
| 97 | DMA_FROM_DEVICE); |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 98 | } |
| 99 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | static int ipoib_ib_post_receive(struct net_device *dev, int id) |
| 101 | { |
| 102 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 103 | struct ib_recv_wr *bad_wr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | int ret; |
| 105 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 106 | priv->rx_wr.wr_id = id | IPOIB_OP_RECV; |
| 107 | priv->rx_sge[0].addr = priv->rx_ring[id].mapping[0]; |
| 108 | priv->rx_sge[1].addr = priv->rx_ring[id].mapping[1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 111 | ret = ib_post_recv(priv->qp, &priv->rx_wr, &bad_wr); |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 112 | if (unlikely(ret)) { |
| 113 | ipoib_warn(priv, "receive failed for buf %d (%d)\n", id, ret); |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 114 | ipoib_ud_dma_unmap_rx(priv, priv->rx_ring[id].mapping); |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 115 | dev_kfree_skb_any(priv->rx_ring[id].skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | priv->rx_ring[id].skb = NULL; |
| 117 | } |
| 118 | |
| 119 | return ret; |
| 120 | } |
| 121 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 122 | static struct sk_buff *ipoib_alloc_rx_skb(struct net_device *dev, int id) |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 123 | { |
| 124 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 125 | struct sk_buff *skb; |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 126 | int buf_size; |
| 127 | u64 *mapping; |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 128 | |
Erez Shitrit | a44878d | 2015-04-02 13:39:00 +0300 | [diff] [blame] | 129 | buf_size = IPOIB_UD_BUF_SIZE(priv->max_ib_mtu); |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 130 | |
Erez Shitrit | a44878d | 2015-04-02 13:39:00 +0300 | [diff] [blame] | 131 | skb = dev_alloc_skb(buf_size + IPOIB_ENCAP_LEN); |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 132 | if (unlikely(!skb)) |
| 133 | return NULL; |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 134 | |
| 135 | /* |
| 136 | * IB will leave a 40 byte gap for a GRH and IPoIB adds a 4 byte |
| 137 | * header. So we need 4 more bytes to get to 48 and align the |
| 138 | * IP header to a multiple of 16. |
| 139 | */ |
| 140 | skb_reserve(skb, 4); |
| 141 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 142 | mapping = priv->rx_ring[id].mapping; |
| 143 | mapping[0] = ib_dma_map_single(priv->ca, skb->data, buf_size, |
| 144 | DMA_FROM_DEVICE); |
| 145 | if (unlikely(ib_dma_mapping_error(priv->ca, mapping[0]))) |
| 146 | goto error; |
| 147 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 148 | priv->rx_ring[id].skb = skb; |
| 149 | return skb; |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 150 | error: |
| 151 | dev_kfree_skb_any(skb); |
| 152 | return NULL; |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 153 | } |
| 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | static int ipoib_ib_post_receives(struct net_device *dev) |
| 156 | { |
| 157 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 158 | int i; |
| 159 | |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 160 | for (i = 0; i < ipoib_recvq_size; ++i) { |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 161 | if (!ipoib_alloc_rx_skb(dev, i)) { |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 162 | ipoib_warn(priv, "failed to allocate receive buffer %d\n", i); |
| 163 | return -ENOMEM; |
| 164 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | if (ipoib_ib_post_receive(dev, i)) { |
| 166 | ipoib_warn(priv, "ipoib_ib_post_receive failed for buf %d\n", i); |
| 167 | return -EIO; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | return 0; |
| 172 | } |
| 173 | |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 174 | static void ipoib_ib_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) |
| 175 | { |
| 176 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 177 | unsigned int wr_id = wc->wr_id & ~IPOIB_OP_RECV; |
| 178 | struct sk_buff *skb; |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 179 | u64 mapping[IPOIB_UD_RX_SG]; |
Christoph Lameter | fed1db3 | 2010-08-27 08:29:38 -0500 | [diff] [blame] | 180 | union ib_gid *dgid; |
Eli Cohen | 68996a6 | 2016-03-11 22:58:43 +0200 | [diff] [blame] | 181 | union ib_gid *sgid; |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 182 | |
Roland Dreier | a89875f | 2007-04-18 20:20:53 -0700 | [diff] [blame] | 183 | ipoib_dbg_data(priv, "recv completion: id %d, status: %d\n", |
| 184 | wr_id, wc->status); |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 185 | |
| 186 | if (unlikely(wr_id >= ipoib_recvq_size)) { |
| 187 | ipoib_warn(priv, "recv completion event with wrid %d (> %d)\n", |
| 188 | wr_id, ipoib_recvq_size); |
| 189 | return; |
| 190 | } |
| 191 | |
| 192 | skb = priv->rx_ring[wr_id].skb; |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 193 | |
| 194 | if (unlikely(wc->status != IB_WC_SUCCESS)) { |
| 195 | if (wc->status != IB_WC_WR_FLUSH_ERR) |
| 196 | ipoib_warn(priv, "failed recv event " |
| 197 | "(status=%d, wrid=%d vend_err %x)\n", |
| 198 | wc->status, wr_id, wc->vendor_err); |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 199 | ipoib_ud_dma_unmap_rx(priv, priv->rx_ring[wr_id].mapping); |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 200 | dev_kfree_skb_any(skb); |
| 201 | priv->rx_ring[wr_id].skb = NULL; |
| 202 | return; |
| 203 | } |
| 204 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 205 | memcpy(mapping, priv->rx_ring[wr_id].mapping, |
| 206 | IPOIB_UD_RX_SG * sizeof *mapping); |
| 207 | |
Roland Dreier | 1b844af | 2007-07-10 13:43:53 -0700 | [diff] [blame] | 208 | /* |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 209 | * If we can't allocate a new RX buffer, dump |
| 210 | * this packet and reuse the old buffer. |
| 211 | */ |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 212 | if (unlikely(!ipoib_alloc_rx_skb(dev, wr_id))) { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 213 | ++dev->stats.rx_dropped; |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 214 | goto repost; |
| 215 | } |
| 216 | |
| 217 | ipoib_dbg_data(priv, "received %d bytes, SLID 0x%04x\n", |
| 218 | wc->byte_len, wc->slid); |
| 219 | |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 220 | ipoib_ud_dma_unmap_rx(priv, mapping); |
Erez Shitrit | a44878d | 2015-04-02 13:39:00 +0300 | [diff] [blame] | 221 | |
| 222 | skb_put(skb, wc->byte_len); |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 223 | |
Christoph Lameter | fed1db3 | 2010-08-27 08:29:38 -0500 | [diff] [blame] | 224 | /* First byte of dgid signals multicast when 0xff */ |
| 225 | dgid = &((struct ib_grh *)skb->data)->dgid; |
| 226 | |
| 227 | if (!(wc->wc_flags & IB_WC_GRH) || dgid->raw[0] != 0xff) |
| 228 | skb->pkt_type = PACKET_HOST; |
| 229 | else if (memcmp(dgid, dev->broadcast + 4, sizeof(union ib_gid)) == 0) |
| 230 | skb->pkt_type = PACKET_BROADCAST; |
| 231 | else |
| 232 | skb->pkt_type = PACKET_MULTICAST; |
| 233 | |
Eli Cohen | 68996a6 | 2016-03-11 22:58:43 +0200 | [diff] [blame] | 234 | sgid = &((struct ib_grh *)skb->data)->sgid; |
| 235 | |
| 236 | /* |
| 237 | * Drop packets that this interface sent, ie multicast packets |
| 238 | * that the HCA has replicated. |
| 239 | */ |
| 240 | if (wc->slid == priv->local_lid && wc->src_qp == priv->qp->qp_num) { |
| 241 | int need_repost = 1; |
| 242 | |
| 243 | if ((wc->wc_flags & IB_WC_GRH) && |
| 244 | sgid->global.interface_id != priv->local_gid.global.interface_id) |
| 245 | need_repost = 0; |
| 246 | |
| 247 | if (need_repost) { |
| 248 | dev_kfree_skb_any(skb); |
| 249 | goto repost; |
| 250 | } |
| 251 | } |
| 252 | |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 253 | skb_pull(skb, IB_GRH_BYTES); |
| 254 | |
Roland Dreier | 1b844af | 2007-07-10 13:43:53 -0700 | [diff] [blame] | 255 | skb->protocol = ((struct ipoib_header *) skb->data)->proto; |
| 256 | skb_reset_mac_header(skb); |
| 257 | skb_pull(skb, IPOIB_ENCAP_LEN); |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 258 | |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 259 | ++dev->stats.rx_packets; |
| 260 | dev->stats.rx_bytes += skb->len; |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 261 | |
Roland Dreier | 1b844af | 2007-07-10 13:43:53 -0700 | [diff] [blame] | 262 | skb->dev = dev; |
Or Gerlitz | d927d50 | 2012-01-11 19:03:51 +0200 | [diff] [blame] | 263 | if ((dev->features & NETIF_F_RXCSUM) && |
| 264 | likely(wc->wc_flags & IB_WC_IP_CSUM_OK)) |
Eli Cohen | 6046136 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 265 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 266 | |
Or Gerlitz | 8ae31e5 | 2011-01-10 17:41:55 -0800 | [diff] [blame] | 267 | napi_gro_receive(&priv->napi, skb); |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 268 | |
| 269 | repost: |
| 270 | if (unlikely(ipoib_ib_post_receive(dev, wr_id))) |
| 271 | ipoib_warn(priv, "ipoib_ib_post_receive failed " |
| 272 | "for buf %d\n", wr_id); |
| 273 | } |
| 274 | |
Yuval Shaia | c426877 | 2015-07-12 01:24:09 -0700 | [diff] [blame] | 275 | int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req) |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 276 | { |
| 277 | struct sk_buff *skb = tx_req->skb; |
| 278 | u64 *mapping = tx_req->mapping; |
| 279 | int i; |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 280 | int off; |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 281 | |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 282 | if (skb_headlen(skb)) { |
| 283 | mapping[0] = ib_dma_map_single(ca, skb->data, skb_headlen(skb), |
| 284 | DMA_TO_DEVICE); |
| 285 | if (unlikely(ib_dma_mapping_error(ca, mapping[0]))) |
| 286 | return -EIO; |
| 287 | |
| 288 | off = 1; |
| 289 | } else |
| 290 | off = 0; |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 291 | |
| 292 | for (i = 0; i < skb_shinfo(skb)->nr_frags; ++i) { |
Eric Dumazet | 9e903e0 | 2011-10-18 21:00:24 +0000 | [diff] [blame] | 293 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
Ian Campbell | 5581be3 | 2011-08-24 22:28:10 +0000 | [diff] [blame] | 294 | mapping[i + off] = ib_dma_map_page(ca, |
| 295 | skb_frag_page(frag), |
Eric Dumazet | 9e903e0 | 2011-10-18 21:00:24 +0000 | [diff] [blame] | 296 | frag->page_offset, skb_frag_size(frag), |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 297 | DMA_TO_DEVICE); |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 298 | if (unlikely(ib_dma_mapping_error(ca, mapping[i + off]))) |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 299 | goto partial_error; |
| 300 | } |
| 301 | return 0; |
| 302 | |
| 303 | partial_error: |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 304 | for (; i > 0; --i) { |
Eric Dumazet | 9e903e0 | 2011-10-18 21:00:24 +0000 | [diff] [blame] | 305 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1]; |
| 306 | |
| 307 | ib_dma_unmap_page(ca, mapping[i - !off], skb_frag_size(frag), DMA_TO_DEVICE); |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 308 | } |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 309 | |
| 310 | if (off) |
| 311 | ib_dma_unmap_single(ca, mapping[0], skb_headlen(skb), DMA_TO_DEVICE); |
| 312 | |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 313 | return -EIO; |
| 314 | } |
| 315 | |
Yuval Shaia | c426877 | 2015-07-12 01:24:09 -0700 | [diff] [blame] | 316 | void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv, |
| 317 | struct ipoib_tx_buf *tx_req) |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 318 | { |
| 319 | struct sk_buff *skb = tx_req->skb; |
| 320 | u64 *mapping = tx_req->mapping; |
| 321 | int i; |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 322 | int off; |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 323 | |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 324 | if (skb_headlen(skb)) { |
Yuval Shaia | c426877 | 2015-07-12 01:24:09 -0700 | [diff] [blame] | 325 | ib_dma_unmap_single(priv->ca, mapping[0], skb_headlen(skb), |
| 326 | DMA_TO_DEVICE); |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 327 | off = 1; |
| 328 | } else |
| 329 | off = 0; |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 330 | |
| 331 | for (i = 0; i < skb_shinfo(skb)->nr_frags; ++i) { |
Eric Dumazet | 9e903e0 | 2011-10-18 21:00:24 +0000 | [diff] [blame] | 332 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
| 333 | |
Yuval Shaia | c426877 | 2015-07-12 01:24:09 -0700 | [diff] [blame] | 334 | ib_dma_unmap_page(priv->ca, mapping[i + off], |
| 335 | skb_frag_size(frag), DMA_TO_DEVICE); |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 336 | } |
| 337 | } |
| 338 | |
Erez Shitrit | 2c01073 | 2015-04-02 13:39:02 +0300 | [diff] [blame] | 339 | /* |
| 340 | * As the result of a completion error the QP Can be transferred to SQE states. |
| 341 | * The function checks if the (send)QP is in SQE state and |
| 342 | * moves it back to RTS state, that in order to have it functional again. |
| 343 | */ |
| 344 | static void ipoib_qp_state_validate_work(struct work_struct *work) |
| 345 | { |
| 346 | struct ipoib_qp_state_validate *qp_work = |
| 347 | container_of(work, struct ipoib_qp_state_validate, work); |
| 348 | |
| 349 | struct ipoib_dev_priv *priv = qp_work->priv; |
| 350 | struct ib_qp_attr qp_attr; |
| 351 | struct ib_qp_init_attr query_init_attr; |
| 352 | int ret; |
| 353 | |
| 354 | ret = ib_query_qp(priv->qp, &qp_attr, IB_QP_STATE, &query_init_attr); |
| 355 | if (ret) { |
| 356 | ipoib_warn(priv, "%s: Failed to query QP ret: %d\n", |
| 357 | __func__, ret); |
| 358 | goto free_res; |
| 359 | } |
| 360 | pr_info("%s: QP: 0x%x is in state: %d\n", |
| 361 | __func__, priv->qp->qp_num, qp_attr.qp_state); |
| 362 | |
| 363 | /* currently support only in SQE->RTS transition*/ |
| 364 | if (qp_attr.qp_state == IB_QPS_SQE) { |
| 365 | qp_attr.qp_state = IB_QPS_RTS; |
| 366 | |
| 367 | ret = ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE); |
| 368 | if (ret) { |
| 369 | pr_warn("failed(%d) modify QP:0x%x SQE->RTS\n", |
| 370 | ret, priv->qp->qp_num); |
| 371 | goto free_res; |
| 372 | } |
| 373 | pr_info("%s: QP: 0x%x moved from IB_QPS_SQE to IB_QPS_RTS\n", |
| 374 | __func__, priv->qp->qp_num); |
| 375 | } else { |
| 376 | pr_warn("QP (%d) will stay in state: %d\n", |
| 377 | priv->qp->qp_num, qp_attr.qp_state); |
| 378 | } |
| 379 | |
| 380 | free_res: |
| 381 | kfree(qp_work); |
| 382 | } |
| 383 | |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 384 | static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | { |
| 386 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 387 | unsigned int wr_id = wc->wr_id; |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 388 | struct ipoib_tx_buf *tx_req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
Roland Dreier | a89875f | 2007-04-18 20:20:53 -0700 | [diff] [blame] | 390 | ipoib_dbg_data(priv, "send completion: id %d, status: %d\n", |
| 391 | wr_id, wc->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 393 | if (unlikely(wr_id >= ipoib_sendq_size)) { |
| 394 | ipoib_warn(priv, "send completion event with wrid %d (> %d)\n", |
| 395 | wr_id, ipoib_sendq_size); |
| 396 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | } |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 398 | |
| 399 | tx_req = &priv->tx_ring[wr_id]; |
| 400 | |
Yuval Shaia | c426877 | 2015-07-12 01:24:09 -0700 | [diff] [blame] | 401 | ipoib_dma_unmap_tx(priv, tx_req); |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 402 | |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 403 | ++dev->stats.tx_packets; |
| 404 | dev->stats.tx_bytes += tx_req->skb->len; |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 405 | |
| 406 | dev_kfree_skb_any(tx_req->skb); |
| 407 | |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 408 | ++priv->tx_tail; |
Michael S. Tsirkin | 1b52496 | 2007-08-16 15:36:16 +0300 | [diff] [blame] | 409 | if (unlikely(--priv->tx_outstanding == ipoib_sendq_size >> 1) && |
| 410 | netif_queue_stopped(dev) && |
| 411 | test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 412 | netif_wake_queue(dev); |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 413 | |
| 414 | if (wc->status != IB_WC_SUCCESS && |
Erez Shitrit | 2c01073 | 2015-04-02 13:39:02 +0300 | [diff] [blame] | 415 | wc->status != IB_WC_WR_FLUSH_ERR) { |
| 416 | struct ipoib_qp_state_validate *qp_work; |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 417 | ipoib_warn(priv, "failed send event " |
| 418 | "(status=%d, wrid=%d vend_err %x)\n", |
| 419 | wc->status, wr_id, wc->vendor_err); |
Erez Shitrit | 2c01073 | 2015-04-02 13:39:02 +0300 | [diff] [blame] | 420 | qp_work = kzalloc(sizeof(*qp_work), GFP_ATOMIC); |
| 421 | if (!qp_work) { |
| 422 | ipoib_warn(priv, "%s Failed alloc ipoib_qp_state_validate for qp: 0x%x\n", |
| 423 | __func__, priv->qp->qp_num); |
| 424 | return; |
| 425 | } |
| 426 | |
| 427 | INIT_WORK(&qp_work->work, ipoib_qp_state_validate_work); |
| 428 | qp_work->priv = priv; |
| 429 | queue_work(priv->wq, &qp_work->work); |
| 430 | } |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 431 | } |
| 432 | |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 433 | static int poll_tx(struct ipoib_dev_priv *priv) |
| 434 | { |
| 435 | int n, i; |
| 436 | |
| 437 | n = ib_poll_cq(priv->send_cq, MAX_SEND_CQE, priv->send_wc); |
| 438 | for (i = 0; i < n; ++i) |
| 439 | ipoib_ib_handle_tx_wc(priv->dev, priv->send_wc + i); |
| 440 | |
| 441 | return n == MAX_SEND_CQE; |
| 442 | } |
| 443 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 444 | int ipoib_poll(struct napi_struct *napi, int budget) |
Roland Dreier | 2439a6e | 2006-09-22 15:22:52 -0700 | [diff] [blame] | 445 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 446 | struct ipoib_dev_priv *priv = container_of(napi, struct ipoib_dev_priv, napi); |
| 447 | struct net_device *dev = priv->dev; |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 448 | int done; |
| 449 | int t; |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 450 | int n, i; |
| 451 | |
| 452 | done = 0; |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 453 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 454 | poll_more: |
| 455 | while (done < budget) { |
| 456 | int max = (budget - done); |
| 457 | |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 458 | t = min(IPOIB_NUM_WC, max); |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 459 | n = ib_poll_cq(priv->recv_cq, t, priv->ibwc); |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 460 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 461 | for (i = 0; i < n; i++) { |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 462 | struct ib_wc *wc = priv->ibwc + i; |
| 463 | |
Michael S. Tsirkin | 1b52496 | 2007-08-16 15:36:16 +0300 | [diff] [blame] | 464 | if (wc->wr_id & IPOIB_OP_RECV) { |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 465 | ++done; |
Michael S. Tsirkin | 1b52496 | 2007-08-16 15:36:16 +0300 | [diff] [blame] | 466 | if (wc->wr_id & IPOIB_OP_CM) |
| 467 | ipoib_cm_handle_rx_wc(dev, wc); |
| 468 | else |
| 469 | ipoib_ib_handle_rx_wc(dev, wc); |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 470 | } else |
| 471 | ipoib_cm_handle_tx_wc(priv->dev, wc); |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 472 | } |
| 473 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 474 | if (n != t) |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 475 | break; |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 476 | } |
| 477 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 478 | if (done < budget) { |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 479 | napi_complete(napi); |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 480 | if (unlikely(ib_req_notify_cq(priv->recv_cq, |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 481 | IB_CQ_NEXT_COMP | |
| 482 | IB_CQ_REPORT_MISSED_EVENTS)) && |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 483 | napi_reschedule(napi)) |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 484 | goto poll_more; |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 485 | } |
| 486 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 487 | return done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | } |
| 489 | |
| 490 | void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr) |
| 491 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 492 | struct net_device *dev = dev_ptr; |
| 493 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 494 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 495 | napi_schedule(&priv->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | } |
| 497 | |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 498 | static void drain_tx_cq(struct net_device *dev) |
| 499 | { |
| 500 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 501 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 502 | netif_tx_lock(dev); |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 503 | while (poll_tx(priv)) |
| 504 | ; /* nothing */ |
| 505 | |
| 506 | if (netif_queue_stopped(dev)) |
| 507 | mod_timer(&priv->poll_timer, jiffies + 1); |
| 508 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 509 | netif_tx_unlock(dev); |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr) |
| 513 | { |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 514 | struct ipoib_dev_priv *priv = netdev_priv(dev_ptr); |
| 515 | |
| 516 | mod_timer(&priv->poll_timer, jiffies); |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 517 | } |
| 518 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | static inline int post_send(struct ipoib_dev_priv *priv, |
| 520 | unsigned int wr_id, |
| 521 | struct ib_ah *address, u32 qpn, |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 522 | struct ipoib_tx_buf *tx_req, |
| 523 | void *head, int hlen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | { |
| 525 | struct ib_send_wr *bad_wr; |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 526 | struct sk_buff *skb = tx_req->skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
Yuval Shaia | c426877 | 2015-07-12 01:24:09 -0700 | [diff] [blame] | 528 | ipoib_build_sge(priv, tx_req); |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 529 | |
Christoph Hellwig | e622f2f | 2015-10-08 09:16:33 +0100 | [diff] [blame] | 530 | priv->tx_wr.wr.wr_id = wr_id; |
| 531 | priv->tx_wr.remote_qpn = qpn; |
| 532 | priv->tx_wr.ah = address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 534 | if (head) { |
Christoph Hellwig | e622f2f | 2015-10-08 09:16:33 +0100 | [diff] [blame] | 535 | priv->tx_wr.mss = skb_shinfo(skb)->gso_size; |
| 536 | priv->tx_wr.header = head; |
| 537 | priv->tx_wr.hlen = hlen; |
| 538 | priv->tx_wr.wr.opcode = IB_WR_LSO; |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 539 | } else |
Christoph Hellwig | e622f2f | 2015-10-08 09:16:33 +0100 | [diff] [blame] | 540 | priv->tx_wr.wr.opcode = IB_WR_SEND; |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 541 | |
Christoph Hellwig | e622f2f | 2015-10-08 09:16:33 +0100 | [diff] [blame] | 542 | return ib_post_send(priv->qp, &priv->tx_wr.wr, &bad_wr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | } |
| 544 | |
| 545 | void ipoib_send(struct net_device *dev, struct sk_buff *skb, |
| 546 | struct ipoib_ah *address, u32 qpn) |
| 547 | { |
| 548 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 549 | struct ipoib_tx_buf *tx_req; |
Or Gerlitz | a48f509 | 2010-03-04 13:17:37 +0000 | [diff] [blame] | 550 | int hlen, rc; |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 551 | void *phead; |
Hans Westgaard Ry | 78a50a5 | 2016-03-02 13:44:28 +0100 | [diff] [blame] | 552 | unsigned usable_sge = priv->max_send_sge - !!skb_headlen(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
Eli Cohen | 40ca198 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 554 | if (skb_is_gso(skb)) { |
| 555 | hlen = skb_transport_offset(skb) + tcp_hdrlen(skb); |
| 556 | phead = skb->data; |
| 557 | if (unlikely(!skb_pull(skb, hlen))) { |
| 558 | ipoib_warn(priv, "linear data too small\n"); |
| 559 | ++dev->stats.tx_dropped; |
| 560 | ++dev->stats.tx_errors; |
| 561 | dev_kfree_skb_any(skb); |
| 562 | return; |
| 563 | } |
| 564 | } else { |
| 565 | if (unlikely(skb->len > priv->mcast_mtu + IPOIB_ENCAP_LEN)) { |
| 566 | ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n", |
| 567 | skb->len, priv->mcast_mtu + IPOIB_ENCAP_LEN); |
| 568 | ++dev->stats.tx_dropped; |
| 569 | ++dev->stats.tx_errors; |
| 570 | ipoib_cm_skb_too_long(dev, skb, priv->mcast_mtu); |
| 571 | return; |
| 572 | } |
| 573 | phead = NULL; |
| 574 | hlen = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | } |
Hans Westgaard Ry | 78a50a5 | 2016-03-02 13:44:28 +0100 | [diff] [blame] | 576 | if (skb_shinfo(skb)->nr_frags > usable_sge) { |
| 577 | if (skb_linearize(skb) < 0) { |
| 578 | ipoib_warn(priv, "skb could not be linearized\n"); |
| 579 | ++dev->stats.tx_dropped; |
| 580 | ++dev->stats.tx_errors; |
| 581 | dev_kfree_skb_any(skb); |
| 582 | return; |
| 583 | } |
| 584 | /* Does skb_linearize return ok without reducing nr_frags? */ |
| 585 | if (skb_shinfo(skb)->nr_frags > usable_sge) { |
| 586 | ipoib_warn(priv, "too many frags after skb linearize\n"); |
| 587 | ++dev->stats.tx_dropped; |
| 588 | ++dev->stats.tx_errors; |
| 589 | dev_kfree_skb_any(skb); |
| 590 | return; |
| 591 | } |
| 592 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | |
| 594 | ipoib_dbg_data(priv, "sending packet, length=%d address=%p qpn=0x%06x\n", |
| 595 | skb->len, address, qpn); |
| 596 | |
| 597 | /* |
| 598 | * We put the skb into the tx_ring _before_ we call post_send() |
| 599 | * because it's entirely possible that the completion handler will |
| 600 | * run before we execute anything after the post_send(). That |
| 601 | * means we have to make sure everything is properly recorded and |
| 602 | * our state is consistent before we call post_send(). |
| 603 | */ |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 604 | tx_req = &priv->tx_ring[priv->tx_head & (ipoib_sendq_size - 1)]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | tx_req->skb = skb; |
Eli Cohen | 7143740 | 2008-01-30 18:30:53 +0200 | [diff] [blame] | 606 | if (unlikely(ipoib_dma_map_tx(priv->ca, tx_req))) { |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 607 | ++dev->stats.tx_errors; |
Roland Dreier | 73fbe8b | 2006-10-10 12:50:38 -0700 | [diff] [blame] | 608 | dev_kfree_skb_any(skb); |
| 609 | return; |
| 610 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | |
Eli Cohen | 6046136 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 612 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
Christoph Hellwig | e622f2f | 2015-10-08 09:16:33 +0100 | [diff] [blame] | 613 | priv->tx_wr.wr.send_flags |= IB_SEND_IP_CSUM; |
Eli Cohen | 6046136 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 614 | else |
Christoph Hellwig | e622f2f | 2015-10-08 09:16:33 +0100 | [diff] [blame] | 615 | priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM; |
Eli Cohen | 6046136 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 616 | |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 617 | if (++priv->tx_outstanding == ipoib_sendq_size) { |
| 618 | ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n"); |
| 619 | if (ib_req_notify_cq(priv->send_cq, IB_CQ_NEXT_COMP)) |
| 620 | ipoib_warn(priv, "request notify on send CQ failed\n"); |
| 621 | netif_stop_queue(dev); |
| 622 | } |
| 623 | |
Shlomo Pongratz | 7e5a90c | 2013-02-04 15:29:10 +0000 | [diff] [blame] | 624 | skb_orphan(skb); |
| 625 | skb_dst_drop(skb); |
| 626 | |
Or Gerlitz | a48f509 | 2010-03-04 13:17:37 +0000 | [diff] [blame] | 627 | rc = post_send(priv, priv->tx_head & (ipoib_sendq_size - 1), |
| 628 | address->ah, qpn, tx_req, phead, hlen); |
| 629 | if (unlikely(rc)) { |
| 630 | ipoib_warn(priv, "post_send failed, error %d\n", rc); |
Roland Dreier | de90351 | 2007-09-28 15:33:51 -0700 | [diff] [blame] | 631 | ++dev->stats.tx_errors; |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 632 | --priv->tx_outstanding; |
Yuval Shaia | c426877 | 2015-07-12 01:24:09 -0700 | [diff] [blame] | 633 | ipoib_dma_unmap_tx(priv, tx_req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | dev_kfree_skb_any(skb); |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 635 | if (netif_queue_stopped(dev)) |
| 636 | netif_wake_queue(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | } else { |
| 638 | dev->trans_start = jiffies; |
| 639 | |
| 640 | address->last_send = priv->tx_head; |
| 641 | ++priv->tx_head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 643 | |
| 644 | if (unlikely(priv->tx_outstanding > MAX_SEND_CQE)) |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 645 | while (poll_tx(priv)) |
| 646 | ; /* nothing */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | } |
| 648 | |
| 649 | static void __ipoib_reap_ah(struct net_device *dev) |
| 650 | { |
| 651 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 652 | struct ipoib_ah *ah, *tah; |
| 653 | LIST_HEAD(remove_list); |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 654 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 656 | netif_tx_lock_bh(dev); |
| 657 | spin_lock_irqsave(&priv->lock, flags); |
| 658 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | list_for_each_entry_safe(ah, tah, &priv->dead_ahs, list) |
Roland Dreier | 2181858 | 2005-07-27 14:41:32 -0700 | [diff] [blame] | 660 | if ((int) priv->tx_tail - (int) ah->last_send >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | list_del(&ah->list); |
Roland Dreier | 31c02e2 | 2006-06-17 20:37:34 -0700 | [diff] [blame] | 662 | ib_destroy_ah(ah->ah); |
| 663 | kfree(ah); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | } |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 665 | |
| 666 | spin_unlock_irqrestore(&priv->lock, flags); |
| 667 | netif_tx_unlock_bh(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | } |
| 669 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 670 | void ipoib_reap_ah(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 672 | struct ipoib_dev_priv *priv = |
| 673 | container_of(work, struct ipoib_dev_priv, ah_reap_task.work); |
| 674 | struct net_device *dev = priv->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
| 676 | __ipoib_reap_ah(dev); |
| 677 | |
| 678 | if (!test_bit(IPOIB_STOP_REAPER, &priv->flags)) |
Doug Ledford | 0b39578 | 2015-02-21 19:27:03 -0500 | [diff] [blame] | 679 | queue_delayed_work(priv->wq, &priv->ah_reap_task, |
Anton Blanchard | 69fc507 | 2007-10-15 00:50:56 -0500 | [diff] [blame] | 680 | round_jiffies_relative(HZ)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | } |
| 682 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 683 | static void ipoib_flush_ah(struct net_device *dev) |
Doug Ledford | e135106 | 2015-02-21 19:26:59 -0500 | [diff] [blame] | 684 | { |
| 685 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 686 | |
| 687 | cancel_delayed_work(&priv->ah_reap_task); |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 688 | flush_workqueue(priv->wq); |
Doug Ledford | e135106 | 2015-02-21 19:26:59 -0500 | [diff] [blame] | 689 | ipoib_reap_ah(&priv->ah_reap_task.work); |
| 690 | } |
| 691 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 692 | static void ipoib_stop_ah(struct net_device *dev) |
Doug Ledford | e135106 | 2015-02-21 19:26:59 -0500 | [diff] [blame] | 693 | { |
| 694 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 695 | |
| 696 | set_bit(IPOIB_STOP_REAPER, &priv->flags); |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 697 | ipoib_flush_ah(dev); |
Doug Ledford | e135106 | 2015-02-21 19:26:59 -0500 | [diff] [blame] | 698 | } |
| 699 | |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 700 | static void ipoib_ib_tx_timer_func(unsigned long ctx) |
| 701 | { |
| 702 | drain_tx_cq((struct net_device *)ctx); |
| 703 | } |
| 704 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 705 | int ipoib_ib_dev_open(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | { |
| 707 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 708 | int ret; |
| 709 | |
Alex Estrin | dd57c93 | 2014-08-06 14:40:32 -0400 | [diff] [blame] | 710 | ipoib_pkey_dev_check_presence(dev); |
| 711 | |
| 712 | if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) { |
| 713 | ipoib_warn(priv, "P_Key 0x%04x is %s\n", priv->pkey, |
| 714 | (!(priv->pkey & 0x7fff) ? "Invalid" : "not found")); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 715 | return -1; |
| 716 | } |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 717 | |
Roland Dreier | 5b6810e | 2005-10-11 11:08:24 -0700 | [diff] [blame] | 718 | ret = ipoib_init_qp(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | if (ret) { |
Roland Dreier | 5b6810e | 2005-10-11 11:08:24 -0700 | [diff] [blame] | 720 | ipoib_warn(priv, "ipoib_init_qp returned %d\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | return -1; |
| 722 | } |
| 723 | |
| 724 | ret = ipoib_ib_post_receives(dev); |
| 725 | if (ret) { |
| 726 | ipoib_warn(priv, "ipoib_ib_post_receives returned %d\n", ret); |
Erez Shitrit | c2bb562 | 2013-10-16 17:37:47 +0300 | [diff] [blame] | 727 | goto dev_stop; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | } |
| 729 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 730 | ret = ipoib_cm_dev_open(dev); |
| 731 | if (ret) { |
Michael S. Tsirkin | 24bd1e4 | 2007-05-18 16:12:54 +0300 | [diff] [blame] | 732 | ipoib_warn(priv, "ipoib_cm_dev_open returned %d\n", ret); |
Erez Shitrit | c2bb562 | 2013-10-16 17:37:47 +0300 | [diff] [blame] | 733 | goto dev_stop; |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 734 | } |
| 735 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | clear_bit(IPOIB_STOP_REAPER, &priv->flags); |
Doug Ledford | 0b39578 | 2015-02-21 19:27:03 -0500 | [diff] [blame] | 737 | queue_delayed_work(priv->wq, &priv->ah_reap_task, |
Anton Blanchard | 69fc507 | 2007-10-15 00:50:56 -0500 | [diff] [blame] | 738 | round_jiffies_relative(HZ)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | |
Yossi Etigin | e028cc5 | 2009-04-20 13:58:08 -0700 | [diff] [blame] | 740 | if (!test_and_set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags)) |
| 741 | napi_enable(&priv->napi); |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 742 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | return 0; |
Erez Shitrit | c2bb562 | 2013-10-16 17:37:47 +0300 | [diff] [blame] | 744 | dev_stop: |
| 745 | if (!test_and_set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags)) |
| 746 | napi_enable(&priv->napi); |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 747 | ipoib_ib_dev_stop(dev); |
Erez Shitrit | c2bb562 | 2013-10-16 17:37:47 +0300 | [diff] [blame] | 748 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | } |
| 750 | |
Erez Shitrit | db84f88 | 2014-07-08 12:45:11 +0300 | [diff] [blame] | 751 | void ipoib_pkey_dev_check_presence(struct net_device *dev) |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 752 | { |
| 753 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 754 | |
Alex Estrin | dd57c93 | 2014-08-06 14:40:32 -0400 | [diff] [blame] | 755 | if (!(priv->pkey & 0x7fff) || |
| 756 | ib_find_pkey(priv->ca, priv->port, priv->pkey, |
| 757 | &priv->pkey_index)) |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 758 | clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
| 759 | else |
| 760 | set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
| 761 | } |
| 762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | int ipoib_ib_dev_up(struct net_device *dev) |
| 764 | { |
| 765 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 766 | |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 767 | ipoib_pkey_dev_check_presence(dev); |
| 768 | |
| 769 | if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) { |
| 770 | ipoib_dbg(priv, "PKEY is not assigned.\n"); |
| 771 | return 0; |
| 772 | } |
| 773 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | set_bit(IPOIB_FLAG_OPER_UP, &priv->flags); |
| 775 | |
| 776 | return ipoib_mcast_start_thread(dev); |
| 777 | } |
| 778 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 779 | int ipoib_ib_dev_down(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | { |
| 781 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 782 | |
| 783 | ipoib_dbg(priv, "downing ib_dev\n"); |
| 784 | |
| 785 | clear_bit(IPOIB_FLAG_OPER_UP, &priv->flags); |
| 786 | netif_carrier_off(dev); |
| 787 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 788 | ipoib_mcast_stop_thread(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | ipoib_mcast_dev_flush(dev); |
| 790 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | ipoib_flush_paths(dev); |
| 792 | |
| 793 | return 0; |
| 794 | } |
| 795 | |
| 796 | static int recvs_pending(struct net_device *dev) |
| 797 | { |
| 798 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 799 | int pending = 0; |
| 800 | int i; |
| 801 | |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 802 | for (i = 0; i < ipoib_recvq_size; ++i) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | if (priv->rx_ring[i].skb) |
| 804 | ++pending; |
| 805 | |
| 806 | return pending; |
| 807 | } |
| 808 | |
Michael S. Tsirkin | 2dfbfc3 | 2007-05-24 18:32:46 +0300 | [diff] [blame] | 809 | void ipoib_drain_cq(struct net_device *dev) |
| 810 | { |
| 811 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 812 | int i, n; |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 813 | |
| 814 | /* |
| 815 | * We call completion handling routines that expect to be |
| 816 | * called from the BH-disabled NAPI poll context, so disable |
| 817 | * BHs here too. |
| 818 | */ |
| 819 | local_bh_disable(); |
| 820 | |
Michael S. Tsirkin | 2dfbfc3 | 2007-05-24 18:32:46 +0300 | [diff] [blame] | 821 | do { |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 822 | n = ib_poll_cq(priv->recv_cq, IPOIB_NUM_WC, priv->ibwc); |
Michael S. Tsirkin | 2dfbfc3 | 2007-05-24 18:32:46 +0300 | [diff] [blame] | 823 | for (i = 0; i < n; ++i) { |
Roland Dreier | ce423ef | 2007-10-09 19:59:04 -0700 | [diff] [blame] | 824 | /* |
| 825 | * Convert any successful completions to flush |
| 826 | * errors to avoid passing packets up the |
| 827 | * stack after bringing the device down. |
| 828 | */ |
| 829 | if (priv->ibwc[i].status == IB_WC_SUCCESS) |
| 830 | priv->ibwc[i].status = IB_WC_WR_FLUSH_ERR; |
| 831 | |
Michael S. Tsirkin | 1b52496 | 2007-08-16 15:36:16 +0300 | [diff] [blame] | 832 | if (priv->ibwc[i].wr_id & IPOIB_OP_RECV) { |
| 833 | if (priv->ibwc[i].wr_id & IPOIB_OP_CM) |
| 834 | ipoib_cm_handle_rx_wc(dev, priv->ibwc + i); |
| 835 | else |
| 836 | ipoib_ib_handle_rx_wc(dev, priv->ibwc + i); |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 837 | } else |
| 838 | ipoib_cm_handle_tx_wc(dev, priv->ibwc + i); |
Michael S. Tsirkin | 2dfbfc3 | 2007-05-24 18:32:46 +0300 | [diff] [blame] | 839 | } |
| 840 | } while (n == IPOIB_NUM_WC); |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 841 | |
| 842 | while (poll_tx(priv)) |
| 843 | ; /* nothing */ |
Roland Dreier | 943c246 | 2008-09-30 10:36:21 -0700 | [diff] [blame] | 844 | |
| 845 | local_bh_enable(); |
Michael S. Tsirkin | 2dfbfc3 | 2007-05-24 18:32:46 +0300 | [diff] [blame] | 846 | } |
| 847 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 848 | int ipoib_ib_dev_stop(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | { |
| 850 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 851 | struct ib_qp_attr qp_attr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | unsigned long begin; |
Roland Dreier | 1993d68 | 2005-10-28 15:30:34 -0700 | [diff] [blame] | 853 | struct ipoib_tx_buf *tx_req; |
Michael S. Tsirkin | 2dfbfc3 | 2007-05-24 18:32:46 +0300 | [diff] [blame] | 854 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | |
Yossi Etigin | e028cc5 | 2009-04-20 13:58:08 -0700 | [diff] [blame] | 856 | if (test_and_clear_bit(IPOIB_FLAG_INITIALIZED, &priv->flags)) |
| 857 | napi_disable(&priv->napi); |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 858 | |
Michael S. Tsirkin | 839fcab | 2007-02-05 22:12:23 +0200 | [diff] [blame] | 859 | ipoib_cm_dev_stop(dev); |
| 860 | |
Roland Dreier | 3bc12e7 | 2005-10-30 13:20:09 -0800 | [diff] [blame] | 861 | /* |
| 862 | * Move our QP to the error state and then reinitialize in |
| 863 | * when all work requests have completed or have been flushed. |
| 864 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | qp_attr.qp_state = IB_QPS_ERR; |
Roland Dreier | 3bc12e7 | 2005-10-30 13:20:09 -0800 | [diff] [blame] | 866 | if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | ipoib_warn(priv, "Failed to modify QP to ERROR state\n"); |
| 868 | |
| 869 | /* Wait for all sends and receives to complete */ |
| 870 | begin = jiffies; |
| 871 | |
| 872 | while (priv->tx_head != priv->tx_tail || recvs_pending(dev)) { |
| 873 | if (time_after(jiffies, begin + 5 * HZ)) { |
| 874 | ipoib_warn(priv, "timing out; %d sends %d receives not completed\n", |
| 875 | priv->tx_head - priv->tx_tail, recvs_pending(dev)); |
| 876 | |
| 877 | /* |
| 878 | * assume the HW is wedged and just free up |
| 879 | * all our pending work requests. |
| 880 | */ |
Roland Dreier | 2181858 | 2005-07-27 14:41:32 -0700 | [diff] [blame] | 881 | while ((int) priv->tx_tail - (int) priv->tx_head < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | tx_req = &priv->tx_ring[priv->tx_tail & |
Shirley Ma | 0f48525 | 2006-04-10 09:43:58 -0700 | [diff] [blame] | 883 | (ipoib_sendq_size - 1)]; |
Yuval Shaia | c426877 | 2015-07-12 01:24:09 -0700 | [diff] [blame] | 884 | ipoib_dma_unmap_tx(priv, tx_req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | dev_kfree_skb_any(tx_req->skb); |
| 886 | ++priv->tx_tail; |
Michael S. Tsirkin | 1b52496 | 2007-08-16 15:36:16 +0300 | [diff] [blame] | 887 | --priv->tx_outstanding; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | } |
| 889 | |
Ralph Campbell | 37ccf9d | 2006-12-12 14:30:48 -0800 | [diff] [blame] | 890 | for (i = 0; i < ipoib_recvq_size; ++i) { |
| 891 | struct ipoib_rx_buf *rx_req; |
| 892 | |
| 893 | rx_req = &priv->rx_ring[i]; |
| 894 | if (!rx_req->skb) |
| 895 | continue; |
Shirley Ma | bc7b3a3 | 2008-04-23 11:55:45 -0700 | [diff] [blame] | 896 | ipoib_ud_dma_unmap_rx(priv, |
| 897 | priv->rx_ring[i].mapping); |
Ralph Campbell | 37ccf9d | 2006-12-12 14:30:48 -0800 | [diff] [blame] | 898 | dev_kfree_skb_any(rx_req->skb); |
| 899 | rx_req->skb = NULL; |
| 900 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | |
| 902 | goto timeout; |
| 903 | } |
| 904 | |
Michael S. Tsirkin | 2dfbfc3 | 2007-05-24 18:32:46 +0300 | [diff] [blame] | 905 | ipoib_drain_cq(dev); |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 906 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | msleep(1); |
| 908 | } |
| 909 | |
| 910 | ipoib_dbg(priv, "All sends and receives done.\n"); |
| 911 | |
| 912 | timeout: |
Eli Cohen | 57ce41d | 2008-04-30 20:02:45 -0700 | [diff] [blame] | 913 | del_timer_sync(&priv->poll_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | qp_attr.qp_state = IB_QPS_RESET; |
Roland Dreier | 3bc12e7 | 2005-10-30 13:20:09 -0800 | [diff] [blame] | 915 | if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | ipoib_warn(priv, "Failed to modify QP to RESET state\n"); |
| 917 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 918 | ipoib_flush_ah(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | |
Eli Cohen | f56bcd8 | 2008-04-29 13:46:53 -0700 | [diff] [blame] | 920 | ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP); |
Roland Dreier | 8d1cc86 | 2007-05-06 21:05:32 -0700 | [diff] [blame] | 921 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | return 0; |
| 923 | } |
| 924 | |
| 925 | int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port) |
| 926 | { |
| 927 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 928 | |
| 929 | priv->ca = ca; |
| 930 | priv->port = port; |
| 931 | priv->qp = NULL; |
| 932 | |
| 933 | if (ipoib_transport_dev_init(dev, ca)) { |
| 934 | printk(KERN_WARNING "%s: ipoib_transport_dev_init failed\n", ca->name); |
| 935 | return -ENODEV; |
| 936 | } |
| 937 | |
Roland Dreier | 2767840 | 2008-10-10 15:58:52 -0700 | [diff] [blame] | 938 | setup_timer(&priv->poll_timer, ipoib_ib_tx_timer_func, |
| 939 | (unsigned long) dev); |
| 940 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | if (dev->flags & IFF_UP) { |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 942 | if (ipoib_ib_dev_open(dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | ipoib_transport_dev_cleanup(dev); |
| 944 | return -ENODEV; |
| 945 | } |
| 946 | } |
| 947 | |
| 948 | return 0; |
| 949 | } |
| 950 | |
Erez Shitrit | c290414 | 2013-07-18 14:02:32 +0300 | [diff] [blame] | 951 | /* |
| 952 | * Takes whatever value which is in pkey index 0 and updates priv->pkey |
| 953 | * returns 0 if the pkey value was changed. |
| 954 | */ |
| 955 | static inline int update_parent_pkey(struct ipoib_dev_priv *priv) |
| 956 | { |
| 957 | int result; |
| 958 | u16 prev_pkey; |
| 959 | |
| 960 | prev_pkey = priv->pkey; |
| 961 | result = ib_query_pkey(priv->ca, priv->port, 0, &priv->pkey); |
| 962 | if (result) { |
| 963 | ipoib_warn(priv, "ib_query_pkey port %d failed (ret = %d)\n", |
| 964 | priv->port, result); |
| 965 | return result; |
| 966 | } |
| 967 | |
| 968 | priv->pkey |= 0x8000; |
| 969 | |
| 970 | if (prev_pkey != priv->pkey) { |
| 971 | ipoib_dbg(priv, "pkey changed from 0x%x to 0x%x\n", |
| 972 | prev_pkey, priv->pkey); |
| 973 | /* |
| 974 | * Update the pkey in the broadcast address, while making sure to set |
| 975 | * the full membership bit, so that we join the right broadcast group. |
| 976 | */ |
| 977 | priv->dev->broadcast[8] = priv->pkey >> 8; |
| 978 | priv->dev->broadcast[9] = priv->pkey & 0xff; |
| 979 | return 0; |
| 980 | } |
| 981 | |
| 982 | return 1; |
| 983 | } |
Alex Estrin | dd57c93 | 2014-08-06 14:40:32 -0400 | [diff] [blame] | 984 | /* |
| 985 | * returns 0 if pkey value was found in a different slot. |
| 986 | */ |
| 987 | static inline int update_child_pkey(struct ipoib_dev_priv *priv) |
| 988 | { |
| 989 | u16 old_index = priv->pkey_index; |
| 990 | |
| 991 | priv->pkey_index = 0; |
| 992 | ipoib_pkey_dev_check_presence(priv->dev); |
| 993 | |
| 994 | if (test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags) && |
| 995 | (old_index == priv->pkey_index)) |
| 996 | return 1; |
| 997 | return 0; |
| 998 | } |
Erez Shitrit | c290414 | 2013-07-18 14:02:32 +0300 | [diff] [blame] | 999 | |
Mark Bloch | 492a7e6 | 2016-05-18 16:42:43 +0300 | [diff] [blame^] | 1000 | /* |
| 1001 | * returns true if the device address of the ipoib interface has changed and the |
| 1002 | * new address is a valid one (i.e in the gid table), return false otherwise. |
| 1003 | */ |
| 1004 | static bool ipoib_dev_addr_changed_valid(struct ipoib_dev_priv *priv) |
| 1005 | { |
| 1006 | union ib_gid search_gid; |
| 1007 | union ib_gid gid0; |
| 1008 | union ib_gid *netdev_gid; |
| 1009 | int err; |
| 1010 | u16 index; |
| 1011 | u8 port; |
| 1012 | bool ret = false; |
| 1013 | |
| 1014 | netdev_gid = (union ib_gid *)(priv->dev->dev_addr + 4); |
| 1015 | if (ib_query_gid(priv->ca, priv->port, 0, &gid0, NULL)) |
| 1016 | return false; |
| 1017 | |
| 1018 | netif_addr_lock(priv->dev); |
| 1019 | |
| 1020 | /* The subnet prefix may have changed, update it now so we won't have |
| 1021 | * to do it later |
| 1022 | */ |
| 1023 | priv->local_gid.global.subnet_prefix = gid0.global.subnet_prefix; |
| 1024 | netdev_gid->global.subnet_prefix = gid0.global.subnet_prefix; |
| 1025 | search_gid.global.subnet_prefix = gid0.global.subnet_prefix; |
| 1026 | |
| 1027 | search_gid.global.interface_id = priv->local_gid.global.interface_id; |
| 1028 | |
| 1029 | netif_addr_unlock(priv->dev); |
| 1030 | |
| 1031 | err = ib_find_gid(priv->ca, &search_gid, IB_GID_TYPE_IB, |
| 1032 | priv->dev, &port, &index); |
| 1033 | |
| 1034 | netif_addr_lock(priv->dev); |
| 1035 | |
| 1036 | if (search_gid.global.interface_id != |
| 1037 | priv->local_gid.global.interface_id) |
| 1038 | /* There was a change while we were looking up the gid, bail |
| 1039 | * here and let the next work sort this out |
| 1040 | */ |
| 1041 | goto out; |
| 1042 | |
| 1043 | /* The next section of code needs some background: |
| 1044 | * Per IB spec the port GUID can't change if the HCA is powered on. |
| 1045 | * port GUID is the basis for GID at index 0 which is the basis for |
| 1046 | * the default device address of a ipoib interface. |
| 1047 | * |
| 1048 | * so it seems the flow should be: |
| 1049 | * if user_changed_dev_addr && gid in gid tbl |
| 1050 | * set bit dev_addr_set |
| 1051 | * return true |
| 1052 | * else |
| 1053 | * return false |
| 1054 | * |
| 1055 | * The issue is that there are devices that don't follow the spec, |
| 1056 | * they change the port GUID when the HCA is powered, so in order |
| 1057 | * not to break userspace applications, We need to check if the |
| 1058 | * user wanted to control the device address and we assume that |
| 1059 | * if he sets the device address back to be based on GID index 0, |
| 1060 | * he no longer wishs to control it. |
| 1061 | * |
| 1062 | * If the user doesn't control the the device address, |
| 1063 | * IPOIB_FLAG_DEV_ADDR_SET is set and ib_find_gid failed it means |
| 1064 | * the port GUID has changed and GID at index 0 has changed |
| 1065 | * so we need to change priv->local_gid and priv->dev->dev_addr |
| 1066 | * to reflect the new GID. |
| 1067 | */ |
| 1068 | if (!test_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags)) { |
| 1069 | if (!err && port == priv->port) { |
| 1070 | set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); |
| 1071 | if (index == 0) |
| 1072 | clear_bit(IPOIB_FLAG_DEV_ADDR_CTRL, |
| 1073 | &priv->flags); |
| 1074 | else |
| 1075 | set_bit(IPOIB_FLAG_DEV_ADDR_CTRL, &priv->flags); |
| 1076 | ret = true; |
| 1077 | } else { |
| 1078 | ret = false; |
| 1079 | } |
| 1080 | } else { |
| 1081 | if (!err && port == priv->port) { |
| 1082 | ret = true; |
| 1083 | } else { |
| 1084 | if (!test_bit(IPOIB_FLAG_DEV_ADDR_CTRL, &priv->flags)) { |
| 1085 | memcpy(&priv->local_gid, &gid0, |
| 1086 | sizeof(priv->local_gid)); |
| 1087 | memcpy(priv->dev->dev_addr + 4, &gid0, |
| 1088 | sizeof(priv->local_gid)); |
| 1089 | ret = true; |
| 1090 | } |
| 1091 | } |
| 1092 | } |
| 1093 | |
| 1094 | out: |
| 1095 | netif_addr_unlock(priv->dev); |
| 1096 | |
| 1097 | return ret; |
| 1098 | } |
| 1099 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1100 | static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv, |
Haggai Eran | 8b7cce0 | 2015-07-07 17:45:13 +0300 | [diff] [blame] | 1101 | enum ipoib_flush_level level, |
| 1102 | int nesting) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | { |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1104 | struct ipoib_dev_priv *cpriv; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1105 | struct net_device *dev = priv->dev; |
Erez Shitrit | c290414 | 2013-07-18 14:02:32 +0300 | [diff] [blame] | 1106 | int result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | |
Haggai Eran | 8b7cce0 | 2015-07-07 17:45:13 +0300 | [diff] [blame] | 1108 | down_read_nested(&priv->vlan_rwsem, nesting); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1109 | |
| 1110 | /* |
| 1111 | * Flush any child interfaces too -- they might be up even if |
| 1112 | * the parent is down. |
| 1113 | */ |
| 1114 | list_for_each_entry(cpriv, &priv->child_intfs, list) |
Haggai Eran | 8b7cce0 | 2015-07-07 17:45:13 +0300 | [diff] [blame] | 1115 | __ipoib_ib_dev_flush(cpriv, level, nesting + 1); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1116 | |
Erez Shitrit | f47944c | 2013-10-16 17:37:49 +0300 | [diff] [blame] | 1117 | up_read(&priv->vlan_rwsem); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1118 | |
Alex Estrin | dd57c93 | 2014-08-06 14:40:32 -0400 | [diff] [blame] | 1119 | if (!test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags) && |
| 1120 | level != IPOIB_FLUSH_HEAVY) { |
Mark Bloch | 492a7e6 | 2016-05-18 16:42:43 +0300 | [diff] [blame^] | 1121 | /* Make sure the dev_addr is set even if not flushing */ |
| 1122 | if (level == IPOIB_FLUSH_LIGHT) |
| 1123 | ipoib_dev_addr_changed_valid(priv); |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 1124 | ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_INITIALIZED not set.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | return; |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 1126 | } |
| 1127 | |
| 1128 | if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) { |
Alex Estrin | dd57c93 | 2014-08-06 14:40:32 -0400 | [diff] [blame] | 1129 | /* interface is down. update pkey and leave. */ |
| 1130 | if (level == IPOIB_FLUSH_HEAVY) { |
| 1131 | if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) |
| 1132 | update_parent_pkey(priv); |
| 1133 | else |
| 1134 | update_child_pkey(priv); |
Mark Bloch | 492a7e6 | 2016-05-18 16:42:43 +0300 | [diff] [blame^] | 1135 | } else if (level == IPOIB_FLUSH_LIGHT) |
| 1136 | ipoib_dev_addr_changed_valid(priv); |
Leonid Arsh | 7a343d4 | 2006-03-23 19:52:51 +0200 | [diff] [blame] | 1137 | ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_ADMIN_UP not set.\n"); |
| 1138 | return; |
| 1139 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1141 | if (level == IPOIB_FLUSH_HEAVY) { |
Erez Shitrit | c290414 | 2013-07-18 14:02:32 +0300 | [diff] [blame] | 1142 | /* child devices chase their origin pkey value, while non-child |
| 1143 | * (parent) devices should always takes what present in pkey index 0 |
| 1144 | */ |
| 1145 | if (test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { |
Alex Estrin | dd57c93 | 2014-08-06 14:40:32 -0400 | [diff] [blame] | 1146 | result = update_child_pkey(priv); |
| 1147 | if (result) { |
| 1148 | /* restart QP only if P_Key index is changed */ |
Erez Shitrit | c290414 | 2013-07-18 14:02:32 +0300 | [diff] [blame] | 1149 | ipoib_dbg(priv, "Not flushing - P_Key index not changed.\n"); |
Roland Dreier | 9fdd5e5 | 2008-04-16 21:09:35 -0700 | [diff] [blame] | 1150 | return; |
Erez Shitrit | c290414 | 2013-07-18 14:02:32 +0300 | [diff] [blame] | 1151 | } |
Alex Estrin | dd57c93 | 2014-08-06 14:40:32 -0400 | [diff] [blame] | 1152 | |
Erez Shitrit | c290414 | 2013-07-18 14:02:32 +0300 | [diff] [blame] | 1153 | } else { |
| 1154 | result = update_parent_pkey(priv); |
| 1155 | /* restart QP only if P_Key value changed */ |
| 1156 | if (result) { |
| 1157 | ipoib_dbg(priv, "Not flushing - P_Key value not changed.\n"); |
| 1158 | return; |
| 1159 | } |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1160 | } |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1161 | } |
| 1162 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1163 | if (level == IPOIB_FLUSH_LIGHT) { |
| 1164 | ipoib_mark_paths_invalid(dev); |
| 1165 | ipoib_mcast_dev_flush(dev); |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 1166 | ipoib_flush_ah(dev); |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1167 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1169 | if (level >= IPOIB_FLUSH_NORMAL) |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 1170 | ipoib_ib_dev_down(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1172 | if (level == IPOIB_FLUSH_HEAVY) { |
Alex Estrin | dd57c93 | 2014-08-06 14:40:32 -0400 | [diff] [blame] | 1173 | if (test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags)) |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 1174 | ipoib_ib_dev_stop(dev); |
| 1175 | if (ipoib_ib_dev_open(dev) != 0) |
Alex Estrin | dd57c93 | 2014-08-06 14:40:32 -0400 | [diff] [blame] | 1176 | return; |
| 1177 | if (netif_queue_stopped(dev)) |
| 1178 | netif_start_queue(dev); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1179 | } |
| 1180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | /* |
| 1182 | * The device could have been brought down between the start and when |
| 1183 | * we get here, don't bring it back up if it's not configured up |
| 1184 | */ |
Eli Cohen | 5ccd025 | 2006-09-22 15:22:56 -0700 | [diff] [blame] | 1185 | if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) { |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1186 | if (level >= IPOIB_FLUSH_NORMAL) |
| 1187 | ipoib_ib_dev_up(dev); |
Mark Bloch | 492a7e6 | 2016-05-18 16:42:43 +0300 | [diff] [blame^] | 1188 | if (ipoib_dev_addr_changed_valid(priv)) |
| 1189 | ipoib_mcast_restart_task(&priv->restart_task); |
Eli Cohen | 5ccd025 | 2006-09-22 15:22:56 -0700 | [diff] [blame] | 1190 | } |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1191 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1193 | void ipoib_ib_dev_flush_light(struct work_struct *work) |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1194 | { |
| 1195 | struct ipoib_dev_priv *priv = |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1196 | container_of(work, struct ipoib_dev_priv, flush_light); |
Michael S. Tsirkin | 4f71055 | 2005-11-29 10:53:30 -0800 | [diff] [blame] | 1197 | |
Haggai Eran | 8b7cce0 | 2015-07-07 17:45:13 +0300 | [diff] [blame] | 1198 | __ipoib_ib_dev_flush(priv, IPOIB_FLUSH_LIGHT, 0); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1199 | } |
Michael S. Tsirkin | 4f71055 | 2005-11-29 10:53:30 -0800 | [diff] [blame] | 1200 | |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1201 | void ipoib_ib_dev_flush_normal(struct work_struct *work) |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1202 | { |
| 1203 | struct ipoib_dev_priv *priv = |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1204 | container_of(work, struct ipoib_dev_priv, flush_normal); |
Yosef Etigin | 26bbf13 | 2007-05-19 08:51:54 -0700 | [diff] [blame] | 1205 | |
Haggai Eran | 8b7cce0 | 2015-07-07 17:45:13 +0300 | [diff] [blame] | 1206 | __ipoib_ib_dev_flush(priv, IPOIB_FLUSH_NORMAL, 0); |
Moni Shoua | ee1e2c8 | 2008-07-14 23:48:49 -0700 | [diff] [blame] | 1207 | } |
| 1208 | |
| 1209 | void ipoib_ib_dev_flush_heavy(struct work_struct *work) |
| 1210 | { |
| 1211 | struct ipoib_dev_priv *priv = |
| 1212 | container_of(work, struct ipoib_dev_priv, flush_heavy); |
| 1213 | |
Haggai Eran | 8b7cce0 | 2015-07-07 17:45:13 +0300 | [diff] [blame] | 1214 | __ipoib_ib_dev_flush(priv, IPOIB_FLUSH_HEAVY, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | } |
| 1216 | |
| 1217 | void ipoib_ib_dev_cleanup(struct net_device *dev) |
| 1218 | { |
| 1219 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 1220 | |
| 1221 | ipoib_dbg(priv, "cleaning up ib_dev\n"); |
Erez Shitrit | a39c52a | 2013-10-16 17:37:52 +0300 | [diff] [blame] | 1222 | /* |
| 1223 | * We must make sure there are no more (path) completions |
| 1224 | * that may wish to touch priv fields that are no longer valid |
| 1225 | */ |
| 1226 | ipoib_flush_paths(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 1228 | ipoib_mcast_stop_thread(dev); |
Eli Cohen | 988bd50 | 2006-01-12 14:32:20 -0800 | [diff] [blame] | 1229 | ipoib_mcast_dev_flush(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | |
Doug Ledford | e135106 | 2015-02-21 19:26:59 -0500 | [diff] [blame] | 1231 | /* |
| 1232 | * All of our ah references aren't free until after |
| 1233 | * ipoib_mcast_dev_flush(), ipoib_flush_paths, and |
| 1234 | * the neighbor garbage collection is stopped and reaped. |
| 1235 | * That should all be done now, so make a final ah flush. |
| 1236 | */ |
Doug Ledford | efc82ee | 2015-02-21 19:27:04 -0500 | [diff] [blame] | 1237 | ipoib_stop_ah(dev); |
Doug Ledford | e135106 | 2015-02-21 19:26:59 -0500 | [diff] [blame] | 1238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | ipoib_transport_dev_cleanup(dev); |
| 1240 | } |
| 1241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | |