linux/drivers/net/rionet.c
<<
>>
Prefs
   1/*
   2 * rionet - Ethernet driver over RapidIO messaging services
   3 *
   4 * Copyright 2005 MontaVista Software, Inc.
   5 * Matt Porter <mporter@kernel.crashing.org>
   6 *
   7 * This program is free software; you can redistribute  it and/or modify it
   8 * under  the terms of  the GNU General  Public License as published by the
   9 * Free Software Foundation;  either version 2 of the  License, or (at your
  10 * option) any later version.
  11 */
  12
  13#include <linux/module.h>
  14#include <linux/kernel.h>
  15#include <linux/dma-mapping.h>
  16#include <linux/delay.h>
  17#include <linux/rio.h>
  18#include <linux/rio_drv.h>
  19#include <linux/slab.h>
  20#include <linux/rio_ids.h>
  21
  22#include <linux/netdevice.h>
  23#include <linux/etherdevice.h>
  24#include <linux/skbuff.h>
  25#include <linux/crc32.h>
  26#include <linux/ethtool.h>
  27
  28#define DRV_NAME        "rionet"
  29#define DRV_VERSION     "0.3"
  30#define DRV_AUTHOR      "Matt Porter <mporter@kernel.crashing.org>"
  31#define DRV_DESC        "Ethernet over RapidIO"
  32
  33MODULE_AUTHOR(DRV_AUTHOR);
  34MODULE_DESCRIPTION(DRV_DESC);
  35MODULE_LICENSE("GPL");
  36
  37#define RIONET_DEFAULT_MSGLEVEL \
  38                        (NETIF_MSG_DRV          | \
  39                         NETIF_MSG_LINK         | \
  40                         NETIF_MSG_RX_ERR       | \
  41                         NETIF_MSG_TX_ERR)
  42
  43#define RIONET_DOORBELL_JOIN    0x1000
  44#define RIONET_DOORBELL_LEAVE   0x1001
  45
  46#define RIONET_MAILBOX          0
  47
  48#define RIONET_TX_RING_SIZE     CONFIG_RIONET_TX_SIZE
  49#define RIONET_RX_RING_SIZE     CONFIG_RIONET_RX_SIZE
  50#define RIONET_MAX_NETS         8
  51
  52struct rionet_private {
  53        struct rio_mport *mport;
  54        struct sk_buff *rx_skb[RIONET_RX_RING_SIZE];
  55        struct sk_buff *tx_skb[RIONET_TX_RING_SIZE];
  56        int rx_slot;
  57        int tx_slot;
  58        int tx_cnt;
  59        int ack_slot;
  60        spinlock_t lock;
  61        spinlock_t tx_lock;
  62        u32 msg_enable;
  63};
  64
  65struct rionet_peer {
  66        struct list_head node;
  67        struct rio_dev *rdev;
  68        struct resource *res;
  69};
  70
  71struct rionet_net {
  72        struct net_device *ndev;
  73        struct list_head peers;
  74        struct rio_dev **active;
  75        int nact;       /* number of active peers */
  76};
  77
  78static struct rionet_net nets[RIONET_MAX_NETS];
  79
  80#define is_rionet_capable(src_ops, dst_ops)                     \
  81                        ((src_ops & RIO_SRC_OPS_DATA_MSG) &&    \
  82                         (dst_ops & RIO_DST_OPS_DATA_MSG) &&    \
  83                         (src_ops & RIO_SRC_OPS_DOORBELL) &&    \
  84                         (dst_ops & RIO_DST_OPS_DOORBELL))
  85#define dev_rionet_capable(dev) \
  86        is_rionet_capable(dev->src_ops, dev->dst_ops)
  87
  88#define RIONET_MAC_MATCH(x)     (!memcmp((x), "\00\01\00\01", 4))
  89#define RIONET_GET_DESTID(x)    ((*((u8 *)x + 4) << 8) | *((u8 *)x + 5))
  90
  91static int rionet_rx_clean(struct net_device *ndev)
  92{
  93        int i;
  94        int error = 0;
  95        struct rionet_private *rnet = netdev_priv(ndev);
  96        void *data;
  97
  98        i = rnet->rx_slot;
  99
 100        do {
 101                if (!rnet->rx_skb[i])
 102                        continue;
 103
 104                if (!(data = rio_get_inb_message(rnet->mport, RIONET_MAILBOX)))
 105                        break;
 106
 107                rnet->rx_skb[i]->data = data;
 108                skb_put(rnet->rx_skb[i], RIO_MAX_MSG_SIZE);
 109                rnet->rx_skb[i]->protocol =
 110                    eth_type_trans(rnet->rx_skb[i], ndev);
 111                error = netif_rx(rnet->rx_skb[i]);
 112
 113                if (error == NET_RX_DROP) {
 114                        ndev->stats.rx_dropped++;
 115                } else {
 116                        ndev->stats.rx_packets++;
 117                        ndev->stats.rx_bytes += RIO_MAX_MSG_SIZE;
 118                }
 119
 120        } while ((i = (i + 1) % RIONET_RX_RING_SIZE) != rnet->rx_slot);
 121
 122        return i;
 123}
 124
 125static void rionet_rx_fill(struct net_device *ndev, int end)
 126{
 127        int i;
 128        struct rionet_private *rnet = netdev_priv(ndev);
 129
 130        i = rnet->rx_slot;
 131        do {
 132                rnet->rx_skb[i] = dev_alloc_skb(RIO_MAX_MSG_SIZE);
 133
 134                if (!rnet->rx_skb[i])
 135                        break;
 136
 137                rio_add_inb_buffer(rnet->mport, RIONET_MAILBOX,
 138                                   rnet->rx_skb[i]->data);
 139        } while ((i = (i + 1) % RIONET_RX_RING_SIZE) != end);
 140
 141        rnet->rx_slot = i;
 142}
 143
 144static int rionet_queue_tx_msg(struct sk_buff *skb, struct net_device *ndev,
 145                               struct rio_dev *rdev)
 146{
 147        struct rionet_private *rnet = netdev_priv(ndev);
 148
 149        rio_add_outb_message(rnet->mport, rdev, 0, skb->data, skb->len);
 150        rnet->tx_skb[rnet->tx_slot] = skb;
 151
 152        ndev->stats.tx_packets++;
 153        ndev->stats.tx_bytes += skb->len;
 154
 155        if (++rnet->tx_cnt == RIONET_TX_RING_SIZE)
 156                netif_stop_queue(ndev);
 157
 158        ++rnet->tx_slot;
 159        rnet->tx_slot &= (RIONET_TX_RING_SIZE - 1);
 160
 161        if (netif_msg_tx_queued(rnet))
 162                printk(KERN_INFO "%s: queued skb len %8.8x\n", DRV_NAME,
 163                       skb->len);
 164
 165        return 0;
 166}
 167
 168static int rionet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 169{
 170        int i;
 171        struct rionet_private *rnet = netdev_priv(ndev);
 172        struct ethhdr *eth = (struct ethhdr *)skb->data;
 173        u16 destid;
 174        unsigned long flags;
 175        int add_num = 1;
 176
 177        local_irq_save(flags);
 178        if (!spin_trylock(&rnet->tx_lock)) {
 179                local_irq_restore(flags);
 180                return NETDEV_TX_LOCKED;
 181        }
 182
 183        if (is_multicast_ether_addr(eth->h_dest))
 184                add_num = nets[rnet->mport->id].nact;
 185
 186        if ((rnet->tx_cnt + add_num) > RIONET_TX_RING_SIZE) {
 187                netif_stop_queue(ndev);
 188                spin_unlock_irqrestore(&rnet->tx_lock, flags);
 189                printk(KERN_ERR "%s: BUG! Tx Ring full when queue awake!\n",
 190                       ndev->name);
 191                return NETDEV_TX_BUSY;
 192        }
 193
 194        if (is_multicast_ether_addr(eth->h_dest)) {
 195                int count = 0;
 196
 197                for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rnet->mport->sys_size);
 198                                i++)
 199                        if (nets[rnet->mport->id].active[i]) {
 200                                rionet_queue_tx_msg(skb, ndev,
 201                                        nets[rnet->mport->id].active[i]);
 202                                if (count)
 203                                        atomic_inc(&skb->users);
 204                                count++;
 205                        }
 206        } else if (RIONET_MAC_MATCH(eth->h_dest)) {
 207                destid = RIONET_GET_DESTID(eth->h_dest);
 208                if (nets[rnet->mport->id].active[destid])
 209                        rionet_queue_tx_msg(skb, ndev,
 210                                        nets[rnet->mport->id].active[destid]);
 211                else {
 212                        /*
 213                         * If the target device was removed from the list of
 214                         * active peers but we still have TX packets targeting
 215                         * it just report sending a packet to the target
 216                         * (without actual packet transfer).
 217                         */
 218                        dev_kfree_skb_any(skb);
 219                        ndev->stats.tx_packets++;
 220                        ndev->stats.tx_bytes += skb->len;
 221                }
 222        }
 223
 224        spin_unlock_irqrestore(&rnet->tx_lock, flags);
 225
 226        return NETDEV_TX_OK;
 227}
 228
 229static void rionet_dbell_event(struct rio_mport *mport, void *dev_id, u16 sid, u16 tid,
 230                               u16 info)
 231{
 232        struct net_device *ndev = dev_id;
 233        struct rionet_private *rnet = netdev_priv(ndev);
 234        struct rionet_peer *peer;
 235
 236        if (netif_msg_intr(rnet))
 237                printk(KERN_INFO "%s: doorbell sid %4.4x tid %4.4x info %4.4x",
 238                       DRV_NAME, sid, tid, info);
 239        if (info == RIONET_DOORBELL_JOIN) {
 240                if (!nets[rnet->mport->id].active[sid]) {
 241                        list_for_each_entry(peer,
 242                                           &nets[rnet->mport->id].peers, node) {
 243                                if (peer->rdev->destid == sid) {
 244                                        nets[rnet->mport->id].active[sid] =
 245                                                                peer->rdev;
 246                                        nets[rnet->mport->id].nact++;
 247                                }
 248                        }
 249                        rio_mport_send_doorbell(mport, sid,
 250                                                RIONET_DOORBELL_JOIN);
 251                }
 252        } else if (info == RIONET_DOORBELL_LEAVE) {
 253                nets[rnet->mport->id].active[sid] = NULL;
 254                nets[rnet->mport->id].nact--;
 255        } else {
 256                if (netif_msg_intr(rnet))
 257                        printk(KERN_WARNING "%s: unhandled doorbell\n",
 258                               DRV_NAME);
 259        }
 260}
 261
 262static void rionet_inb_msg_event(struct rio_mport *mport, void *dev_id, int mbox, int slot)
 263{
 264        int n;
 265        struct net_device *ndev = dev_id;
 266        struct rionet_private *rnet = netdev_priv(ndev);
 267
 268        if (netif_msg_intr(rnet))
 269                printk(KERN_INFO "%s: inbound message event, mbox %d slot %d\n",
 270                       DRV_NAME, mbox, slot);
 271
 272        spin_lock(&rnet->lock);
 273        if ((n = rionet_rx_clean(ndev)) != rnet->rx_slot)
 274                rionet_rx_fill(ndev, n);
 275        spin_unlock(&rnet->lock);
 276}
 277
 278static void rionet_outb_msg_event(struct rio_mport *mport, void *dev_id, int mbox, int slot)
 279{
 280        struct net_device *ndev = dev_id;
 281        struct rionet_private *rnet = netdev_priv(ndev);
 282
 283        spin_lock(&rnet->lock);
 284
 285        if (netif_msg_intr(rnet))
 286                printk(KERN_INFO
 287                       "%s: outbound message event, mbox %d slot %d\n",
 288                       DRV_NAME, mbox, slot);
 289
 290        while (rnet->tx_cnt && (rnet->ack_slot != slot)) {
 291                /* dma unmap single */
 292                dev_kfree_skb_irq(rnet->tx_skb[rnet->ack_slot]);
 293                rnet->tx_skb[rnet->ack_slot] = NULL;
 294                ++rnet->ack_slot;
 295                rnet->ack_slot &= (RIONET_TX_RING_SIZE - 1);
 296                rnet->tx_cnt--;
 297        }
 298
 299        if (rnet->tx_cnt < RIONET_TX_RING_SIZE)
 300                netif_wake_queue(ndev);
 301
 302        spin_unlock(&rnet->lock);
 303}
 304
 305static int rionet_open(struct net_device *ndev)
 306{
 307        int i, rc = 0;
 308        struct rionet_peer *peer, *tmp;
 309        struct rionet_private *rnet = netdev_priv(ndev);
 310
 311        if (netif_msg_ifup(rnet))
 312                printk(KERN_INFO "%s: open\n", DRV_NAME);
 313
 314        if ((rc = rio_request_inb_dbell(rnet->mport,
 315                                        (void *)ndev,
 316                                        RIONET_DOORBELL_JOIN,
 317                                        RIONET_DOORBELL_LEAVE,
 318                                        rionet_dbell_event)) < 0)
 319                goto out;
 320
 321        if ((rc = rio_request_inb_mbox(rnet->mport,
 322                                       (void *)ndev,
 323                                       RIONET_MAILBOX,
 324                                       RIONET_RX_RING_SIZE,
 325                                       rionet_inb_msg_event)) < 0)
 326                goto out;
 327
 328        if ((rc = rio_request_outb_mbox(rnet->mport,
 329                                        (void *)ndev,
 330                                        RIONET_MAILBOX,
 331                                        RIONET_TX_RING_SIZE,
 332                                        rionet_outb_msg_event)) < 0)
 333                goto out;
 334
 335        /* Initialize inbound message ring */
 336        for (i = 0; i < RIONET_RX_RING_SIZE; i++)
 337                rnet->rx_skb[i] = NULL;
 338        rnet->rx_slot = 0;
 339        rionet_rx_fill(ndev, 0);
 340
 341        rnet->tx_slot = 0;
 342        rnet->tx_cnt = 0;
 343        rnet->ack_slot = 0;
 344
 345        netif_carrier_on(ndev);
 346        netif_start_queue(ndev);
 347
 348        list_for_each_entry_safe(peer, tmp,
 349                                 &nets[rnet->mport->id].peers, node) {
 350                if (!(peer->res = rio_request_outb_dbell(peer->rdev,
 351                                                         RIONET_DOORBELL_JOIN,
 352                                                         RIONET_DOORBELL_LEAVE)))
 353                {
 354                        printk(KERN_ERR "%s: error requesting doorbells\n",
 355                               DRV_NAME);
 356                        continue;
 357                }
 358
 359                /* Send a join message */
 360                rio_send_doorbell(peer->rdev, RIONET_DOORBELL_JOIN);
 361        }
 362
 363      out:
 364        return rc;
 365}
 366
 367static int rionet_close(struct net_device *ndev)
 368{
 369        struct rionet_private *rnet = netdev_priv(ndev);
 370        struct rionet_peer *peer, *tmp;
 371        int i;
 372
 373        if (netif_msg_ifup(rnet))
 374                printk(KERN_INFO "%s: close %s\n", DRV_NAME, ndev->name);
 375
 376        netif_stop_queue(ndev);
 377        netif_carrier_off(ndev);
 378
 379        for (i = 0; i < RIONET_RX_RING_SIZE; i++)
 380                kfree_skb(rnet->rx_skb[i]);
 381
 382        list_for_each_entry_safe(peer, tmp,
 383                                 &nets[rnet->mport->id].peers, node) {
 384                if (nets[rnet->mport->id].active[peer->rdev->destid]) {
 385                        rio_send_doorbell(peer->rdev, RIONET_DOORBELL_LEAVE);
 386                        nets[rnet->mport->id].active[peer->rdev->destid] = NULL;
 387                }
 388                rio_release_outb_dbell(peer->rdev, peer->res);
 389        }
 390
 391        rio_release_inb_dbell(rnet->mport, RIONET_DOORBELL_JOIN,
 392                              RIONET_DOORBELL_LEAVE);
 393        rio_release_inb_mbox(rnet->mport, RIONET_MAILBOX);
 394        rio_release_outb_mbox(rnet->mport, RIONET_MAILBOX);
 395
 396        return 0;
 397}
 398
 399static int rionet_remove_dev(struct device *dev, struct subsys_interface *sif)
 400{
 401        struct rio_dev *rdev = to_rio_dev(dev);
 402        unsigned char netid = rdev->net->hport->id;
 403        struct rionet_peer *peer, *tmp;
 404
 405        if (dev_rionet_capable(rdev)) {
 406                list_for_each_entry_safe(peer, tmp, &nets[netid].peers, node) {
 407                        if (peer->rdev == rdev) {
 408                                if (nets[netid].active[rdev->destid]) {
 409                                        nets[netid].active[rdev->destid] = NULL;
 410                                        nets[netid].nact--;
 411                                }
 412
 413                                list_del(&peer->node);
 414                                kfree(peer);
 415                                break;
 416                        }
 417                }
 418        }
 419
 420        return 0;
 421}
 422
 423static void rionet_get_drvinfo(struct net_device *ndev,
 424                               struct ethtool_drvinfo *info)
 425{
 426        struct rionet_private *rnet = netdev_priv(ndev);
 427
 428        strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
 429        strlcpy(info->version, DRV_VERSION, sizeof(info->version));
 430        strlcpy(info->fw_version, "n/a", sizeof(info->fw_version));
 431        strlcpy(info->bus_info, rnet->mport->name, sizeof(info->bus_info));
 432}
 433
 434static u32 rionet_get_msglevel(struct net_device *ndev)
 435{
 436        struct rionet_private *rnet = netdev_priv(ndev);
 437
 438        return rnet->msg_enable;
 439}
 440
 441static void rionet_set_msglevel(struct net_device *ndev, u32 value)
 442{
 443        struct rionet_private *rnet = netdev_priv(ndev);
 444
 445        rnet->msg_enable = value;
 446}
 447
 448static const struct ethtool_ops rionet_ethtool_ops = {
 449        .get_drvinfo = rionet_get_drvinfo,
 450        .get_msglevel = rionet_get_msglevel,
 451        .set_msglevel = rionet_set_msglevel,
 452        .get_link = ethtool_op_get_link,
 453};
 454
 455static const struct net_device_ops rionet_netdev_ops = {
 456        .ndo_open               = rionet_open,
 457        .ndo_stop               = rionet_close,
 458        .ndo_start_xmit         = rionet_start_xmit,
 459        .ndo_change_mtu         = eth_change_mtu,
 460        .ndo_validate_addr      = eth_validate_addr,
 461        .ndo_set_mac_address    = eth_mac_addr,
 462};
 463
 464static int rionet_setup_netdev(struct rio_mport *mport, struct net_device *ndev)
 465{
 466        int rc = 0;
 467        struct rionet_private *rnet;
 468        u16 device_id;
 469        const size_t rionet_active_bytes = sizeof(void *) *
 470                                RIO_MAX_ROUTE_ENTRIES(mport->sys_size);
 471
 472        nets[mport->id].active = (struct rio_dev **)__get_free_pages(GFP_KERNEL,
 473                                                get_order(rionet_active_bytes));
 474        if (!nets[mport->id].active) {
 475                rc = -ENOMEM;
 476                goto out;
 477        }
 478        memset((void *)nets[mport->id].active, 0, rionet_active_bytes);
 479
 480        /* Set up private area */
 481        rnet = netdev_priv(ndev);
 482        rnet->mport = mport;
 483
 484        /* Set the default MAC address */
 485        device_id = rio_local_get_device_id(mport);
 486        ndev->dev_addr[0] = 0x00;
 487        ndev->dev_addr[1] = 0x01;
 488        ndev->dev_addr[2] = 0x00;
 489        ndev->dev_addr[3] = 0x01;
 490        ndev->dev_addr[4] = device_id >> 8;
 491        ndev->dev_addr[5] = device_id & 0xff;
 492
 493        ndev->netdev_ops = &rionet_netdev_ops;
 494        ndev->mtu = RIO_MAX_MSG_SIZE - 14;
 495        ndev->features = NETIF_F_LLTX;
 496        SET_ETHTOOL_OPS(ndev, &rionet_ethtool_ops);
 497
 498        spin_lock_init(&rnet->lock);
 499        spin_lock_init(&rnet->tx_lock);
 500
 501        rnet->msg_enable = RIONET_DEFAULT_MSGLEVEL;
 502
 503        rc = register_netdev(ndev);
 504        if (rc != 0)
 505                goto out;
 506
 507        printk(KERN_INFO "%s: %s %s Version %s, MAC %pM, %s\n",
 508               ndev->name,
 509               DRV_NAME,
 510               DRV_DESC,
 511               DRV_VERSION,
 512               ndev->dev_addr,
 513               mport->name);
 514
 515      out:
 516        return rc;
 517}
 518
 519static unsigned long net_table[RIONET_MAX_NETS/sizeof(unsigned long) + 1];
 520
 521static int rionet_add_dev(struct device *dev, struct subsys_interface *sif)
 522{
 523        int rc = -ENODEV;
 524        u32 lsrc_ops, ldst_ops;
 525        struct rionet_peer *peer;
 526        struct net_device *ndev = NULL;
 527        struct rio_dev *rdev = to_rio_dev(dev);
 528        unsigned char netid = rdev->net->hport->id;
 529        int oldnet;
 530
 531        if (netid >= RIONET_MAX_NETS)
 532                return rc;
 533
 534        oldnet = test_and_set_bit(netid, net_table);
 535
 536        /*
 537         * If first time through this net, make sure local device is rionet
 538         * capable and setup netdev (this step will be skipped in later probes
 539         * on the same net).
 540         */
 541        if (!oldnet) {
 542                rio_local_read_config_32(rdev->net->hport, RIO_SRC_OPS_CAR,
 543                                         &lsrc_ops);
 544                rio_local_read_config_32(rdev->net->hport, RIO_DST_OPS_CAR,
 545                                         &ldst_ops);
 546                if (!is_rionet_capable(lsrc_ops, ldst_ops)) {
 547                        printk(KERN_ERR
 548                               "%s: local device %s is not network capable\n",
 549                               DRV_NAME, rdev->net->hport->name);
 550                        goto out;
 551                }
 552
 553                /* Allocate our net_device structure */
 554                ndev = alloc_etherdev(sizeof(struct rionet_private));
 555                if (ndev == NULL) {
 556                        rc = -ENOMEM;
 557                        goto out;
 558                }
 559                nets[netid].ndev = ndev;
 560                rc = rionet_setup_netdev(rdev->net->hport, ndev);
 561                if (rc) {
 562                        printk(KERN_ERR "%s: failed to setup netdev (rc=%d)\n",
 563                               DRV_NAME, rc);
 564                        goto out;
 565                }
 566
 567                INIT_LIST_HEAD(&nets[netid].peers);
 568                nets[netid].nact = 0;
 569        } else if (nets[netid].ndev == NULL)
 570                goto out;
 571
 572        /*
 573         * If the remote device has mailbox/doorbell capabilities,
 574         * add it to the peer list.
 575         */
 576        if (dev_rionet_capable(rdev)) {
 577                if (!(peer = kmalloc(sizeof(struct rionet_peer), GFP_KERNEL))) {
 578                        rc = -ENOMEM;
 579                        goto out;
 580                }
 581                peer->rdev = rdev;
 582                list_add_tail(&peer->node, &nets[netid].peers);
 583        }
 584
 585        return 0;
 586out:
 587        return rc;
 588}
 589
 590#ifdef MODULE
 591static struct rio_device_id rionet_id_table[] = {
 592        {RIO_DEVICE(RIO_ANY_ID, RIO_ANY_ID)},
 593        { 0, }  /* terminate list */
 594};
 595
 596MODULE_DEVICE_TABLE(rapidio, rionet_id_table);
 597#endif
 598
 599static struct subsys_interface rionet_interface = {
 600        .name           = "rionet",
 601        .subsys         = &rio_bus_type,
 602        .add_dev        = rionet_add_dev,
 603        .remove_dev     = rionet_remove_dev,
 604};
 605
 606static int __init rionet_init(void)
 607{
 608        return subsys_interface_register(&rionet_interface);
 609}
 610
 611static void __exit rionet_exit(void)
 612{
 613        struct rionet_private *rnet;
 614        struct net_device *ndev;
 615        struct rionet_peer *peer, *tmp;
 616        int i;
 617
 618        for (i = 0; i < RIONET_MAX_NETS; i++) {
 619                if (nets[i].ndev != NULL) {
 620                        ndev = nets[i].ndev;
 621                        rnet = netdev_priv(ndev);
 622                        unregister_netdev(ndev);
 623
 624                        list_for_each_entry_safe(peer,
 625                                                 tmp, &nets[i].peers, node) {
 626                                list_del(&peer->node);
 627                                kfree(peer);
 628                        }
 629
 630                        free_pages((unsigned long)nets[i].active,
 631                                 get_order(sizeof(void *) *
 632                                 RIO_MAX_ROUTE_ENTRIES(rnet->mport->sys_size)));
 633                        nets[i].active = NULL;
 634
 635                        free_netdev(ndev);
 636                }
 637        }
 638
 639        subsys_interface_unregister(&rionet_interface);
 640}
 641
 642late_initcall(rionet_init);
 643module_exit(rionet_exit);
 644
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.