/*
* Copyright (c) 2004 Topspin Communications. All rights reserved.
- * Copyright (c) 2005 Voltaire, Inc. All rights reserved.
+ * Copyright (c) 2005 Voltaire, Inc. All rights reserved.
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2008 Cisco. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
- *
- * $Id: user_mad.c 2814 2005-07-06 19:14:09Z halr $
*/
#include <linux/module.h>
#include <linux/err.h>
#include <linux/fs.h>
#include <linux/cdev.h>
-#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/poll.h>
-#include <linux/rwsem.h>
+#include <linux/mutex.h>
#include <linux/kref.h>
+#include <linux/compat.h>
+#include <linux/sched.h>
+#include <linux/semaphore.h>
+#include <linux/slab.h>
#include <asm/uaccess.h>
-#include <asm/semaphore.h>
#include <rdma/ib_mad.h>
#include <rdma/ib_user_mad.h>
IB_UMAD_MINOR_BASE = 0
};
+/*
+ * Our lifetime rules for these structs are the following:
+ * device special file is opened, we take a reference on the
+ * ib_umad_port's struct ib_umad_device. We drop these
+ * references in the corresponding close().
+ *
+ * In addition to references coming from open character devices, there
+ * is one more reference to each ib_umad_device representing the
+ * module's reference taken when allocating the ib_umad_device in
+ * ib_umad_add_one().
+ *
+ * When destroying an ib_umad_device, we drop the module's reference.
+ */
+
struct ib_umad_port {
- int devnum;
- struct cdev dev;
- struct class_device class_dev;
+ struct cdev cdev;
+ struct device *dev;
- int sm_devnum;
- struct cdev sm_dev;
- struct class_device sm_class_dev;
+ struct cdev sm_cdev;
+ struct device *sm_dev;
struct semaphore sm_sem;
+ struct mutex file_mutex;
+ struct list_head file_list;
+
struct ib_device *ib_dev;
struct ib_umad_device *umad_dev;
+ int dev_num;
u8 port_num;
};
};
struct ib_umad_file {
- struct ib_umad_port *port;
- spinlock_t recv_lock;
- struct list_head recv_list;
- wait_queue_head_t recv_wait;
- struct rw_semaphore agent_mutex;
- struct ib_mad_agent *agent[IB_UMAD_MAX_AGENTS];
- struct ib_mr *mr[IB_UMAD_MAX_AGENTS];
+ struct mutex mutex;
+ struct ib_umad_port *port;
+ struct list_head recv_list;
+ struct list_head send_list;
+ struct list_head port_list;
+ spinlock_t send_lock;
+ wait_queue_head_t recv_wait;
+ struct ib_mad_agent *agent[IB_UMAD_MAX_AGENTS];
+ int agents_dead;
+ u8 use_pkey_index;
+ u8 already_used;
};
struct ib_umad_packet {
- struct ib_ah *ah;
struct ib_mad_send_buf *msg;
+ struct ib_mad_recv_wc *recv_wc;
struct list_head list;
int length;
- DECLARE_PCI_UNMAP_ADDR(mapping)
struct ib_user_mad mad;
};
+static struct class *umad_class;
+
static const dev_t base_dev = MKDEV(IB_UMAD_MAJOR, IB_UMAD_MINOR_BASE);
-static spinlock_t map_lock;
-static DECLARE_BITMAP(dev_map, IB_UMAD_MAX_PORTS * 2);
+
+static DEFINE_SPINLOCK(port_lock);
+static DECLARE_BITMAP(dev_map, IB_UMAD_MAX_PORTS);
static void ib_umad_add_one(struct ib_device *device);
static void ib_umad_remove_one(struct ib_device *device);
+static void ib_umad_release_dev(struct kref *ref)
+{
+ struct ib_umad_device *dev =
+ container_of(ref, struct ib_umad_device, ref);
+
+ kfree(dev);
+}
+
+static int hdr_size(struct ib_umad_file *file)
+{
+ return file->use_pkey_index ? sizeof (struct ib_user_mad_hdr) :
+ sizeof (struct ib_user_mad_hdr_old);
+}
+
+/* caller must hold file->mutex */
+static struct ib_mad_agent *__get_agent(struct ib_umad_file *file, int id)
+{
+ return file->agents_dead ? NULL : file->agent[id];
+}
+
static int queue_packet(struct ib_umad_file *file,
struct ib_mad_agent *agent,
struct ib_umad_packet *packet)
{
int ret = 1;
- down_read(&file->agent_mutex);
+ mutex_lock(&file->mutex);
+
for (packet->mad.hdr.id = 0;
packet->mad.hdr.id < IB_UMAD_MAX_AGENTS;
packet->mad.hdr.id++)
- if (agent == file->agent[packet->mad.hdr.id]) {
- spin_lock_irq(&file->recv_lock);
+ if (agent == __get_agent(file, packet->mad.hdr.id)) {
list_add_tail(&packet->list, &file->recv_list);
- spin_unlock_irq(&file->recv_lock);
wake_up_interruptible(&file->recv_wait);
ret = 0;
break;
}
- up_read(&file->agent_mutex);
+ mutex_unlock(&file->mutex);
return ret;
}
+static void dequeue_send(struct ib_umad_file *file,
+ struct ib_umad_packet *packet)
+{
+ spin_lock_irq(&file->send_lock);
+ list_del(&packet->list);
+ spin_unlock_irq(&file->send_lock);
+}
+
static void send_handler(struct ib_mad_agent *agent,
struct ib_mad_send_wc *send_wc)
{
struct ib_umad_file *file = agent->context;
- struct ib_umad_packet *timeout, *packet =
- (void *) (unsigned long) send_wc->wr_id;
+ struct ib_umad_packet *packet = send_wc->send_buf->context[0];
- ib_destroy_ah(packet->msg->send_wr.wr.ud.ah);
+ dequeue_send(file, packet);
+ ib_destroy_ah(packet->msg->ah);
ib_free_send_mad(packet->msg);
if (send_wc->status == IB_WC_RESP_TIMEOUT_ERR) {
- timeout = kmalloc(sizeof *timeout + sizeof (struct ib_mad_hdr),
- GFP_KERNEL);
- if (!timeout)
- goto out;
-
- memset(timeout, 0, sizeof *timeout + sizeof (struct ib_mad_hdr));
-
- timeout->length = sizeof (struct ib_mad_hdr);
- timeout->mad.hdr.id = packet->mad.hdr.id;
- timeout->mad.hdr.status = ETIMEDOUT;
- memcpy(timeout->mad.data, packet->mad.data,
- sizeof (struct ib_mad_hdr));
-
- if (!queue_packet(file, agent, timeout))
- return;
+ packet->length = IB_MGMT_MAD_HDR;
+ packet->mad.hdr.status = ETIMEDOUT;
+ if (!queue_packet(file, agent, packet))
+ return;
}
-out:
kfree(packet);
}
{
struct ib_umad_file *file = agent->context;
struct ib_umad_packet *packet;
- int length;
if (mad_recv_wc->wc->status != IB_WC_SUCCESS)
- goto out;
+ goto err1;
- length = mad_recv_wc->mad_len;
- packet = kmalloc(sizeof *packet + length, GFP_KERNEL);
+ packet = kzalloc(sizeof *packet, GFP_KERNEL);
if (!packet)
- goto out;
-
- memset(packet, 0, sizeof *packet + length);
- packet->length = length;
-
- ib_coalesce_recv_mad(mad_recv_wc, packet->mad.data);
-
- packet->mad.hdr.status = 0;
- packet->mad.hdr.length = length + sizeof (struct ib_user_mad);
- packet->mad.hdr.qpn = cpu_to_be32(mad_recv_wc->wc->src_qp);
- packet->mad.hdr.lid = cpu_to_be16(mad_recv_wc->wc->slid);
- packet->mad.hdr.sl = mad_recv_wc->wc->sl;
- packet->mad.hdr.path_bits = mad_recv_wc->wc->dlid_path_bits;
+ goto err1;
+
+ packet->length = mad_recv_wc->mad_len;
+ packet->recv_wc = mad_recv_wc;
+
+ packet->mad.hdr.status = 0;
+ packet->mad.hdr.length = hdr_size(file) + mad_recv_wc->mad_len;
+ packet->mad.hdr.qpn = cpu_to_be32(mad_recv_wc->wc->src_qp);
+ packet->mad.hdr.lid = cpu_to_be16(mad_recv_wc->wc->slid);
+ packet->mad.hdr.sl = mad_recv_wc->wc->sl;
+ packet->mad.hdr.path_bits = mad_recv_wc->wc->dlid_path_bits;
+ packet->mad.hdr.pkey_index = mad_recv_wc->wc->pkey_index;
packet->mad.hdr.grh_present = !!(mad_recv_wc->wc->wc_flags & IB_WC_GRH);
if (packet->mad.hdr.grh_present) {
- /* XXX parse GRH */
- packet->mad.hdr.gid_index = 0;
- packet->mad.hdr.hop_limit = 0;
- packet->mad.hdr.traffic_class = 0;
- memset(packet->mad.hdr.gid, 0, 16);
- packet->mad.hdr.flow_label = 0;
+ struct ib_ah_attr ah_attr;
+
+ ib_init_ah_from_wc(agent->device, agent->port_num,
+ mad_recv_wc->wc, mad_recv_wc->recv_buf.grh,
+ &ah_attr);
+
+ packet->mad.hdr.gid_index = ah_attr.grh.sgid_index;
+ packet->mad.hdr.hop_limit = ah_attr.grh.hop_limit;
+ packet->mad.hdr.traffic_class = ah_attr.grh.traffic_class;
+ memcpy(packet->mad.hdr.gid, &ah_attr.grh.dgid, 16);
+ packet->mad.hdr.flow_label = cpu_to_be32(ah_attr.grh.flow_label);
}
if (queue_packet(file, agent, packet))
- kfree(packet);
+ goto err2;
+ return;
-out:
+err2:
+ kfree(packet);
+err1:
ib_free_recv_mad(mad_recv_wc);
}
+static ssize_t copy_recv_mad(struct ib_umad_file *file, char __user *buf,
+ struct ib_umad_packet *packet, size_t count)
+{
+ struct ib_mad_recv_buf *recv_buf;
+ int left, seg_payload, offset, max_seg_payload;
+
+ /* We need enough room to copy the first (or only) MAD segment. */
+ recv_buf = &packet->recv_wc->recv_buf;
+ if ((packet->length <= sizeof (*recv_buf->mad) &&
+ count < hdr_size(file) + packet->length) ||
+ (packet->length > sizeof (*recv_buf->mad) &&
+ count < hdr_size(file) + sizeof (*recv_buf->mad)))
+ return -EINVAL;
+
+ if (copy_to_user(buf, &packet->mad, hdr_size(file)))
+ return -EFAULT;
+
+ buf += hdr_size(file);
+ seg_payload = min_t(int, packet->length, sizeof (*recv_buf->mad));
+ if (copy_to_user(buf, recv_buf->mad, seg_payload))
+ return -EFAULT;
+
+ if (seg_payload < packet->length) {
+ /*
+ * Multipacket RMPP MAD message. Copy remainder of message.
+ * Note that last segment may have a shorter payload.
+ */
+ if (count < hdr_size(file) + packet->length) {
+ /*
+ * The buffer is too small, return the first RMPP segment,
+ * which includes the RMPP message length.
+ */
+ return -ENOSPC;
+ }
+ offset = ib_get_mad_data_offset(recv_buf->mad->mad_hdr.mgmt_class);
+ max_seg_payload = sizeof (struct ib_mad) - offset;
+
+ for (left = packet->length - seg_payload, buf += seg_payload;
+ left; left -= seg_payload, buf += seg_payload) {
+ recv_buf = container_of(recv_buf->list.next,
+ struct ib_mad_recv_buf, list);
+ seg_payload = min(left, max_seg_payload);
+ if (copy_to_user(buf, ((void *) recv_buf->mad) + offset,
+ seg_payload))
+ return -EFAULT;
+ }
+ }
+ return hdr_size(file) + packet->length;
+}
+
+static ssize_t copy_send_mad(struct ib_umad_file *file, char __user *buf,
+ struct ib_umad_packet *packet, size_t count)
+{
+ ssize_t size = hdr_size(file) + packet->length;
+
+ if (count < size)
+ return -EINVAL;
+
+ if (copy_to_user(buf, &packet->mad, hdr_size(file)))
+ return -EFAULT;
+
+ buf += hdr_size(file);
+
+ if (copy_to_user(buf, packet->mad.data, packet->length))
+ return -EFAULT;
+
+ return size;
+}
+
static ssize_t ib_umad_read(struct file *filp, char __user *buf,
size_t count, loff_t *pos)
{
struct ib_umad_packet *packet;
ssize_t ret;
- if (count < sizeof (struct ib_user_mad) + sizeof (struct ib_mad))
+ if (count < hdr_size(file))
return -EINVAL;
- spin_lock_irq(&file->recv_lock);
+ mutex_lock(&file->mutex);
while (list_empty(&file->recv_list)) {
- spin_unlock_irq(&file->recv_lock);
+ mutex_unlock(&file->mutex);
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
!list_empty(&file->recv_list)))
return -ERESTARTSYS;
- spin_lock_irq(&file->recv_lock);
+ mutex_lock(&file->mutex);
}
packet = list_entry(file->recv_list.next, struct ib_umad_packet, list);
list_del(&packet->list);
- spin_unlock_irq(&file->recv_lock);
+ mutex_unlock(&file->mutex);
- if (count < packet->length + sizeof (struct ib_user_mad)) {
- /* Return length needed (and first RMPP segment) if too small */
- if (copy_to_user(buf, &packet->mad,
- sizeof (struct ib_user_mad) + sizeof (struct ib_mad)))
- ret = -EFAULT;
- else
- ret = -ENOSPC;
- } else if (copy_to_user(buf, &packet->mad,
- packet->length + sizeof (struct ib_user_mad)))
- ret = -EFAULT;
+ if (packet->recv_wc)
+ ret = copy_recv_mad(file, buf, packet, count);
else
- ret = packet->length + sizeof (struct ib_user_mad);
+ ret = copy_send_mad(file, buf, packet, count);
+
if (ret < 0) {
/* Requeue packet */
- spin_lock_irq(&file->recv_lock);
+ mutex_lock(&file->mutex);
list_add(&packet->list, &file->recv_list);
- spin_unlock_irq(&file->recv_lock);
- } else
+ mutex_unlock(&file->mutex);
+ } else {
+ if (packet->recv_wc)
+ ib_free_recv_mad(packet->recv_wc);
kfree(packet);
+ }
return ret;
}
+static int copy_rmpp_mad(struct ib_mad_send_buf *msg, const char __user *buf)
+{
+ int left, seg;
+
+ /* Copy class specific header */
+ if ((msg->hdr_len > IB_MGMT_RMPP_HDR) &&
+ copy_from_user(msg->mad + IB_MGMT_RMPP_HDR, buf + IB_MGMT_RMPP_HDR,
+ msg->hdr_len - IB_MGMT_RMPP_HDR))
+ return -EFAULT;
+
+ /* All headers are in place. Copy data segments. */
+ for (seg = 1, left = msg->data_len, buf += msg->hdr_len; left > 0;
+ seg++, left -= msg->seg_size, buf += msg->seg_size) {
+ if (copy_from_user(ib_get_rmpp_segment(msg, seg), buf,
+ min(left, msg->seg_size)))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+static int same_destination(struct ib_user_mad_hdr *hdr1,
+ struct ib_user_mad_hdr *hdr2)
+{
+ if (!hdr1->grh_present && !hdr2->grh_present)
+ return (hdr1->lid == hdr2->lid);
+
+ if (hdr1->grh_present && hdr2->grh_present)
+ return !memcmp(hdr1->gid, hdr2->gid, 16);
+
+ return 0;
+}
+
+static int is_duplicate(struct ib_umad_file *file,
+ struct ib_umad_packet *packet)
+{
+ struct ib_umad_packet *sent_packet;
+ struct ib_mad_hdr *sent_hdr, *hdr;
+
+ hdr = (struct ib_mad_hdr *) packet->mad.data;
+ list_for_each_entry(sent_packet, &file->send_list, list) {
+ sent_hdr = (struct ib_mad_hdr *) sent_packet->mad.data;
+
+ if ((hdr->tid != sent_hdr->tid) ||
+ (hdr->mgmt_class != sent_hdr->mgmt_class))
+ continue;
+
+ /*
+ * No need to be overly clever here. If two new operations have
+ * the same TID, reject the second as a duplicate. This is more
+ * restrictive than required by the spec.
+ */
+ if (!ib_response_mad((struct ib_mad *) hdr)) {
+ if (!ib_response_mad((struct ib_mad *) sent_hdr))
+ return 1;
+ continue;
+ } else if (!ib_response_mad((struct ib_mad *) sent_hdr))
+ continue;
+
+ if (same_destination(&packet->mad.hdr, &sent_packet->mad.hdr))
+ return 1;
+ }
+
+ return 0;
+}
+
static ssize_t ib_umad_write(struct file *filp, const char __user *buf,
size_t count, loff_t *pos)
{
struct ib_umad_packet *packet;
struct ib_mad_agent *agent;
struct ib_ah_attr ah_attr;
- struct ib_send_wr *bad_wr;
+ struct ib_ah *ah;
struct ib_rmpp_mad *rmpp_mad;
- u8 method;
__be64 *tid;
- int ret, length, hdr_len, data_len, rmpp_hdr_size;
- int rmpp_active = 0;
+ int ret, data_len, hdr_len, copy_offset, rmpp_active;
- if (count < sizeof (struct ib_user_mad))
+ if (count < hdr_size(file) + IB_MGMT_RMPP_HDR)
return -EINVAL;
- length = count - sizeof (struct ib_user_mad);
- packet = kmalloc(sizeof *packet + sizeof(struct ib_mad_hdr) +
- sizeof(struct ib_rmpp_hdr), GFP_KERNEL);
+ packet = kzalloc(sizeof *packet + IB_MGMT_RMPP_HDR, GFP_KERNEL);
if (!packet)
return -ENOMEM;
- if (copy_from_user(&packet->mad, buf,
- sizeof (struct ib_user_mad) +
- sizeof(struct ib_mad_hdr) +
- sizeof(struct ib_rmpp_hdr))) {
+ if (copy_from_user(&packet->mad, buf, hdr_size(file))) {
ret = -EFAULT;
goto err;
}
goto err;
}
- packet->length = length;
+ buf += hdr_size(file);
- down_read(&file->agent_mutex);
+ if (copy_from_user(packet->mad.data, buf, IB_MGMT_RMPP_HDR)) {
+ ret = -EFAULT;
+ goto err;
+ }
- agent = file->agent[packet->mad.hdr.id];
+ mutex_lock(&file->mutex);
+
+ agent = __get_agent(file, packet->mad.hdr.id);
if (!agent) {
ret = -EINVAL;
goto err_up;
if (packet->mad.hdr.grh_present) {
ah_attr.ah_flags = IB_AH_GRH;
memcpy(ah_attr.grh.dgid.raw, packet->mad.hdr.gid, 16);
- ah_attr.grh.flow_label = be32_to_cpu(packet->mad.hdr.flow_label);
- ah_attr.grh.hop_limit = packet->mad.hdr.hop_limit;
+ ah_attr.grh.sgid_index = packet->mad.hdr.gid_index;
+ ah_attr.grh.flow_label = be32_to_cpu(packet->mad.hdr.flow_label);
+ ah_attr.grh.hop_limit = packet->mad.hdr.hop_limit;
ah_attr.grh.traffic_class = packet->mad.hdr.traffic_class;
}
- packet->ah = ib_create_ah(agent->qp->pd, &ah_attr);
- if (IS_ERR(packet->ah)) {
- ret = PTR_ERR(packet->ah);
+ ah = ib_create_ah(agent->qp->pd, &ah_attr);
+ if (IS_ERR(ah)) {
+ ret = PTR_ERR(ah);
goto err_up;
}
rmpp_mad = (struct ib_rmpp_mad *) packet->mad.data;
- if (ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & IB_MGMT_RMPP_FLAG_ACTIVE) {
- /* RMPP active */
- if (!agent->rmpp_version) {
- ret = -EINVAL;
- goto err_ah;
- }
-
- /* Validate that the management class can support RMPP */
- if (rmpp_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_ADM) {
- hdr_len = offsetof(struct ib_sa_mad, data);
- data_len = length - hdr_len;
- } else if ((rmpp_mad->mad_hdr.mgmt_class >= IB_MGMT_CLASS_VENDOR_RANGE2_START) &&
- (rmpp_mad->mad_hdr.mgmt_class <= IB_MGMT_CLASS_VENDOR_RANGE2_END)) {
- hdr_len = offsetof(struct ib_vendor_mad, data);
- data_len = length - hdr_len;
- } else {
- ret = -EINVAL;
- goto err_ah;
- }
- rmpp_active = 1;
+ hdr_len = ib_get_mad_data_offset(rmpp_mad->mad_hdr.mgmt_class);
+ if (!ib_is_mad_class_rmpp(rmpp_mad->mad_hdr.mgmt_class)) {
+ copy_offset = IB_MGMT_MAD_HDR;
+ rmpp_active = 0;
} else {
- if (length > sizeof(struct ib_mad)) {
- ret = -EINVAL;
- goto err_ah;
- }
- hdr_len = offsetof(struct ib_mad, data);
- data_len = length - hdr_len;
+ copy_offset = IB_MGMT_RMPP_HDR;
+ rmpp_active = ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) &
+ IB_MGMT_RMPP_FLAG_ACTIVE;
}
+ data_len = count - hdr_size(file) - hdr_len;
packet->msg = ib_create_send_mad(agent,
be32_to_cpu(packet->mad.hdr.qpn),
- 0, packet->ah, rmpp_active,
- hdr_len, data_len,
- GFP_KERNEL);
+ packet->mad.hdr.pkey_index, rmpp_active,
+ hdr_len, data_len, GFP_KERNEL);
if (IS_ERR(packet->msg)) {
ret = PTR_ERR(packet->msg);
goto err_ah;
}
- packet->msg->send_wr.wr.ud.timeout_ms = packet->mad.hdr.timeout_ms;
- packet->msg->send_wr.wr.ud.retries = packet->mad.hdr.retries;
+ packet->msg->ah = ah;
+ packet->msg->timeout_ms = packet->mad.hdr.timeout_ms;
+ packet->msg->retries = packet->mad.hdr.retries;
+ packet->msg->context[0] = packet;
- /* Override send WR WRID initialized in ib_create_send_mad */
- packet->msg->send_wr.wr_id = (unsigned long) packet;
+ /* Copy MAD header. Any RMPP header is already in place. */
+ memcpy(packet->msg->mad, packet->mad.data, IB_MGMT_MAD_HDR);
if (!rmpp_active) {
- /* Copy message from user into send buffer */
- if (copy_from_user(packet->msg->mad,
- buf + sizeof(struct ib_user_mad), length)) {
+ if (copy_from_user(packet->msg->mad + copy_offset,
+ buf + copy_offset,
+ hdr_len + data_len - copy_offset)) {
ret = -EFAULT;
goto err_msg;
}
} else {
- rmpp_hdr_size = sizeof(struct ib_mad_hdr) +
- sizeof(struct ib_rmpp_hdr);
-
- /* Only copy MAD headers (RMPP header in place) */
- memcpy(packet->msg->mad, packet->mad.data,
- sizeof(struct ib_mad_hdr));
-
- /* Now, copy rest of message from user into send buffer */
- if (copy_from_user(((struct ib_rmpp_mad *) packet->msg->mad)->data,
- buf + sizeof (struct ib_user_mad) + rmpp_hdr_size,
- length - rmpp_hdr_size)) {
- ret = -EFAULT;
+ ret = copy_rmpp_mad(packet->msg, buf);
+ if (ret)
goto err_msg;
- }
}
/*
- * If userspace is generating a request that will generate a
- * response, we need to make sure the high-order part of the
- * transaction ID matches the agent being used to send the
- * MAD.
+ * Set the high-order part of the transaction ID to make MADs from
+ * different agents unique, and allow routing responses back to the
+ * original requestor.
*/
- method = packet->msg->mad->mad_hdr.method;
-
- if (!(method & IB_MGMT_METHOD_RESP) &&
- method != IB_MGMT_METHOD_TRAP_REPRESS &&
- method != IB_MGMT_METHOD_SEND) {
- tid = &packet->msg->mad->mad_hdr.tid;
+ if (!ib_response_mad(packet->msg->mad)) {
+ tid = &((struct ib_mad_hdr *) packet->msg->mad)->tid;
*tid = cpu_to_be64(((u64) agent->hi_tid) << 32 |
(be64_to_cpup(tid) & 0xffffffff));
+ rmpp_mad->mad_hdr.tid = *tid;
}
- ret = ib_post_send_mad(agent, &packet->msg->send_wr, &bad_wr);
- if (ret)
+ spin_lock_irq(&file->send_lock);
+ ret = is_duplicate(file, packet);
+ if (!ret)
+ list_add_tail(&packet->list, &file->send_list);
+ spin_unlock_irq(&file->send_lock);
+ if (ret) {
+ ret = -EINVAL;
goto err_msg;
+ }
- up_read(&file->agent_mutex);
+ ret = ib_post_send_mad(packet->msg, NULL);
+ if (ret)
+ goto err_send;
- return sizeof (struct ib_user_mad_hdr) + packet->length;
+ mutex_unlock(&file->mutex);
+ return count;
+err_send:
+ dequeue_send(file, packet);
err_msg:
ib_free_send_mad(packet->msg);
-
err_ah:
- ib_destroy_ah(packet->ah);
-
+ ib_destroy_ah(ah);
err_up:
- up_read(&file->agent_mutex);
-
+ mutex_unlock(&file->mutex);
err:
kfree(packet);
return ret;
return mask;
}
-static int ib_umad_reg_agent(struct ib_umad_file *file, unsigned long arg)
+static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg,
+ int compat_method_mask)
{
struct ib_user_mad_reg_req ureq;
struct ib_mad_reg_req req;
- struct ib_mad_agent *agent;
+ struct ib_mad_agent *agent = NULL;
int agent_id;
int ret;
- down_write(&file->agent_mutex);
+ mutex_lock(&file->port->file_mutex);
+ mutex_lock(&file->mutex);
- if (copy_from_user(&ureq, (void __user *) arg, sizeof ureq)) {
+ if (!file->port->ib_dev) {
+ ret = -EPIPE;
+ goto out;
+ }
+
+ if (copy_from_user(&ureq, arg, sizeof ureq)) {
ret = -EFAULT;
goto out;
}
}
for (agent_id = 0; agent_id < IB_UMAD_MAX_AGENTS; ++agent_id)
- if (!file->agent[agent_id])
+ if (!__get_agent(file, agent_id))
goto found;
ret = -ENOMEM;
if (ureq.mgmt_class) {
req.mgmt_class = ureq.mgmt_class;
req.mgmt_class_version = ureq.mgmt_class_version;
- memcpy(req.method_mask, ureq.method_mask, sizeof req.method_mask);
- memcpy(req.oui, ureq.oui, sizeof req.oui);
+ memcpy(req.oui, ureq.oui, sizeof req.oui);
+
+ if (compat_method_mask) {
+ u32 *umm = (u32 *) ureq.method_mask;
+ int i;
+
+ for (i = 0; i < BITS_TO_LONGS(IB_MGMT_MAX_METHODS); ++i)
+ req.method_mask[i] =
+ umm[i * 2] | ((u64) umm[i * 2 + 1] << 32);
+ } else
+ memcpy(req.method_mask, ureq.method_mask,
+ sizeof req.method_mask);
}
agent = ib_register_mad_agent(file->port->ib_dev, file->port->port_num,
send_handler, recv_handler, file);
if (IS_ERR(agent)) {
ret = PTR_ERR(agent);
+ agent = NULL;
goto out;
}
- file->agent[agent_id] = agent;
-
- file->mr[agent_id] = ib_get_dma_mr(agent->qp->pd, IB_ACCESS_LOCAL_WRITE);
- if (IS_ERR(file->mr[agent_id])) {
- ret = -ENOMEM;
- goto err;
- }
-
if (put_user(agent_id,
(u32 __user *) (arg + offsetof(struct ib_user_mad_reg_req, id)))) {
ret = -EFAULT;
- goto err_mr;
+ goto out;
}
+ if (!file->already_used) {
+ file->already_used = 1;
+ if (!file->use_pkey_index) {
+ printk(KERN_WARNING "user_mad: process %s did not enable "
+ "P_Key index support.\n", current->comm);
+ printk(KERN_WARNING "user_mad: Documentation/infiniband/user_mad.txt "
+ "has info on the new ABI.\n");
+ }
+ }
+
+ file->agent[agent_id] = agent;
ret = 0;
- goto out;
-err_mr:
- ib_dereg_mr(file->mr[agent_id]);
+out:
+ mutex_unlock(&file->mutex);
-err:
- file->agent[agent_id] = NULL;
- ib_unregister_mad_agent(agent);
+ if (ret && agent)
+ ib_unregister_mad_agent(agent);
+
+ mutex_unlock(&file->port->file_mutex);
-out:
- up_write(&file->agent_mutex);
return ret;
}
-static int ib_umad_unreg_agent(struct ib_umad_file *file, unsigned long arg)
+static int ib_umad_unreg_agent(struct ib_umad_file *file, u32 __user *arg)
{
+ struct ib_mad_agent *agent = NULL;
u32 id;
int ret = 0;
- down_write(&file->agent_mutex);
+ if (get_user(id, arg))
+ return -EFAULT;
- if (get_user(id, (u32 __user *) arg)) {
- ret = -EFAULT;
- goto out;
- }
+ mutex_lock(&file->port->file_mutex);
+ mutex_lock(&file->mutex);
- if (id < 0 || id >= IB_UMAD_MAX_AGENTS || !file->agent[id]) {
+ if (id < 0 || id >= IB_UMAD_MAX_AGENTS || !__get_agent(file, id)) {
ret = -EINVAL;
goto out;
}
- ib_dereg_mr(file->mr[id]);
- ib_unregister_mad_agent(file->agent[id]);
+ agent = file->agent[id];
file->agent[id] = NULL;
out:
- up_write(&file->agent_mutex);
+ mutex_unlock(&file->mutex);
+
+ if (agent)
+ ib_unregister_mad_agent(agent);
+
+ mutex_unlock(&file->port->file_mutex);
+
+ return ret;
+}
+
+static long ib_umad_enable_pkey(struct ib_umad_file *file)
+{
+ int ret = 0;
+
+ mutex_lock(&file->mutex);
+ if (file->already_used)
+ ret = -EINVAL;
+ else
+ file->use_pkey_index = 1;
+ mutex_unlock(&file->mutex);
+
return ret;
}
{
switch (cmd) {
case IB_USER_MAD_REGISTER_AGENT:
- return ib_umad_reg_agent(filp->private_data, arg);
+ return ib_umad_reg_agent(filp->private_data, (void __user *) arg, 0);
case IB_USER_MAD_UNREGISTER_AGENT:
- return ib_umad_unreg_agent(filp->private_data, arg);
+ return ib_umad_unreg_agent(filp->private_data, (__u32 __user *) arg);
+ case IB_USER_MAD_ENABLE_PKEY:
+ return ib_umad_enable_pkey(filp->private_data);
default:
return -ENOIOCTLCMD;
}
}
+#ifdef CONFIG_COMPAT
+static long ib_umad_compat_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ switch (cmd) {
+ case IB_USER_MAD_REGISTER_AGENT:
+ return ib_umad_reg_agent(filp->private_data, compat_ptr(arg), 1);
+ case IB_USER_MAD_UNREGISTER_AGENT:
+ return ib_umad_unreg_agent(filp->private_data, compat_ptr(arg));
+ case IB_USER_MAD_ENABLE_PKEY:
+ return ib_umad_enable_pkey(filp->private_data);
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+#endif
+
+/*
+ * ib_umad_open() does not need the BKL:
+ *
+ * - the ib_umad_port structures are properly reference counted, and
+ * everything else is purely local to the file being created, so
+ * races against other open calls are not a problem;
+ * - the ioctl method does not affect any global state outside of the
+ * file structure being operated on;
+ */
static int ib_umad_open(struct inode *inode, struct file *filp)
{
- struct ib_umad_port *port =
- container_of(inode->i_cdev, struct ib_umad_port, dev);
+ struct ib_umad_port *port;
struct ib_umad_file *file;
+ int ret = 0;
- file = kmalloc(sizeof *file, GFP_KERNEL);
- if (!file)
- return -ENOMEM;
+ port = container_of(inode->i_cdev, struct ib_umad_port, cdev);
+ if (port)
+ kref_get(&port->umad_dev->ref);
+ else
+ return -ENXIO;
- memset(file, 0, sizeof *file);
+ mutex_lock(&port->file_mutex);
- spin_lock_init(&file->recv_lock);
- init_rwsem(&file->agent_mutex);
+ if (!port->ib_dev) {
+ ret = -ENXIO;
+ goto out;
+ }
+
+ file = kzalloc(sizeof *file, GFP_KERNEL);
+ if (!file) {
+ kref_put(&port->umad_dev->ref, ib_umad_release_dev);
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ mutex_init(&file->mutex);
+ spin_lock_init(&file->send_lock);
INIT_LIST_HEAD(&file->recv_list);
+ INIT_LIST_HEAD(&file->send_list);
init_waitqueue_head(&file->recv_wait);
file->port = port;
filp->private_data = file;
- return 0;
+ list_add_tail(&file->port_list, &port->file_list);
+
+out:
+ mutex_unlock(&port->file_mutex);
+ return ret;
}
static int ib_umad_close(struct inode *inode, struct file *filp)
{
struct ib_umad_file *file = filp->private_data;
+ struct ib_umad_device *dev = file->port->umad_dev;
struct ib_umad_packet *packet, *tmp;
+ int already_dead;
int i;
- for (i = 0; i < IB_UMAD_MAX_AGENTS; ++i)
- if (file->agent[i]) {
- ib_dereg_mr(file->mr[i]);
- ib_unregister_mad_agent(file->agent[i]);
- }
+ mutex_lock(&file->port->file_mutex);
+ mutex_lock(&file->mutex);
- list_for_each_entry_safe(packet, tmp, &file->recv_list, list)
+ already_dead = file->agents_dead;
+ file->agents_dead = 1;
+
+ list_for_each_entry_safe(packet, tmp, &file->recv_list, list) {
+ if (packet->recv_wc)
+ ib_free_recv_mad(packet->recv_wc);
kfree(packet);
+ }
+
+ list_del(&file->port_list);
+
+ mutex_unlock(&file->mutex);
+
+ if (!already_dead)
+ for (i = 0; i < IB_UMAD_MAX_AGENTS; ++i)
+ if (file->agent[i])
+ ib_unregister_mad_agent(file->agent[i]);
+
+ mutex_unlock(&file->port->file_mutex);
kfree(file);
+ kref_put(&dev->ref, ib_umad_release_dev);
return 0;
}
-static struct file_operations umad_fops = {
- .owner = THIS_MODULE,
- .read = ib_umad_read,
- .write = ib_umad_write,
- .poll = ib_umad_poll,
+static const struct file_operations umad_fops = {
+ .owner = THIS_MODULE,
+ .read = ib_umad_read,
+ .write = ib_umad_write,
+ .poll = ib_umad_poll,
.unlocked_ioctl = ib_umad_ioctl,
- .compat_ioctl = ib_umad_ioctl,
- .open = ib_umad_open,
- .release = ib_umad_close
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = ib_umad_compat_ioctl,
+#endif
+ .open = ib_umad_open,
+ .release = ib_umad_close
};
static int ib_umad_sm_open(struct inode *inode, struct file *filp)
{
- struct ib_umad_port *port =
- container_of(inode->i_cdev, struct ib_umad_port, sm_dev);
+ struct ib_umad_port *port;
struct ib_port_modify props = {
.set_port_cap_mask = IB_PORT_SM
};
int ret;
+ port = container_of(inode->i_cdev, struct ib_umad_port, sm_cdev);
+ if (port)
+ kref_get(&port->umad_dev->ref);
+ else
+ return -ENXIO;
+
if (filp->f_flags & O_NONBLOCK) {
- if (down_trylock(&port->sm_sem))
- return -EAGAIN;
+ if (down_trylock(&port->sm_sem)) {
+ ret = -EAGAIN;
+ goto fail;
+ }
} else {
- if (down_interruptible(&port->sm_sem))
- return -ERESTARTSYS;
+ if (down_interruptible(&port->sm_sem)) {
+ ret = -ERESTARTSYS;
+ goto fail;
+ }
}
ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props);
if (ret) {
up(&port->sm_sem);
- return ret;
+ goto fail;
}
filp->private_data = port;
return 0;
+
+fail:
+ kref_put(&port->umad_dev->ref, ib_umad_release_dev);
+ return ret;
}
static int ib_umad_sm_close(struct inode *inode, struct file *filp)
struct ib_port_modify props = {
.clr_port_cap_mask = IB_PORT_SM
};
- int ret;
+ int ret = 0;
+
+ mutex_lock(&port->file_mutex);
+ if (port->ib_dev)
+ ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props);
+ mutex_unlock(&port->file_mutex);
- ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props);
up(&port->sm_sem);
+ kref_put(&port->umad_dev->ref, ib_umad_release_dev);
+
return ret;
}
-static struct file_operations umad_sm_fops = {
- .owner = THIS_MODULE,
- .open = ib_umad_sm_open,
+static const struct file_operations umad_sm_fops = {
+ .owner = THIS_MODULE,
+ .open = ib_umad_sm_open,
.release = ib_umad_sm_close
};
.remove = ib_umad_remove_one
};
-static ssize_t show_dev(struct class_device *class_dev, char *buf)
+static ssize_t show_ibdev(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
- struct ib_umad_port *port = class_get_devdata(class_dev);
-
- if (class_dev == &port->class_dev)
- return print_dev_t(buf, port->dev.dev);
- else
- return print_dev_t(buf, port->sm_dev.dev);
-}
-static CLASS_DEVICE_ATTR(dev, S_IRUGO, show_dev, NULL);
+ struct ib_umad_port *port = dev_get_drvdata(dev);
-static ssize_t show_ibdev(struct class_device *class_dev, char *buf)
-{
- struct ib_umad_port *port = class_get_devdata(class_dev);
+ if (!port)
+ return -ENODEV;
return sprintf(buf, "%s\n", port->ib_dev->name);
}
-static CLASS_DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL);
+static DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL);
-static ssize_t show_port(struct class_device *class_dev, char *buf)
+static ssize_t show_port(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
- struct ib_umad_port *port = class_get_devdata(class_dev);
+ struct ib_umad_port *port = dev_get_drvdata(dev);
+
+ if (!port)
+ return -ENODEV;
return sprintf(buf, "%d\n", port->port_num);
}
-static CLASS_DEVICE_ATTR(port, S_IRUGO, show_port, NULL);
+static DEVICE_ATTR(port, S_IRUGO, show_port, NULL);
-static void ib_umad_release_dev(struct kref *ref)
-{
- struct ib_umad_device *dev =
- container_of(ref, struct ib_umad_device, ref);
+static CLASS_ATTR_STRING(abi_version, S_IRUGO,
+ __stringify(IB_USER_MAD_ABI_VERSION));
- kfree(dev);
-}
-
-static void ib_umad_release_port(struct class_device *class_dev)
+static dev_t overflow_maj;
+static DECLARE_BITMAP(overflow_map, IB_UMAD_MAX_PORTS);
+static int find_overflow_devnum(void)
{
- struct ib_umad_port *port = class_get_devdata(class_dev);
+ int ret;
- if (class_dev == &port->class_dev) {
- cdev_del(&port->dev);
- clear_bit(port->devnum, dev_map);
- } else {
- cdev_del(&port->sm_dev);
- clear_bit(port->sm_devnum, dev_map);
+ if (!overflow_maj) {
+ ret = alloc_chrdev_region(&overflow_maj, 0, IB_UMAD_MAX_PORTS * 2,
+ "infiniband_mad");
+ if (ret) {
+ printk(KERN_ERR "user_mad: couldn't register dynamic device number\n");
+ return ret;
+ }
}
- kref_put(&port->umad_dev->ref, ib_umad_release_dev);
-}
-
-static struct class umad_class = {
- .name = "infiniband_mad",
- .release = ib_umad_release_port
-};
+ ret = find_first_zero_bit(overflow_map, IB_UMAD_MAX_PORTS);
+ if (ret >= IB_UMAD_MAX_PORTS)
+ return -1;
-static ssize_t show_abi_version(struct class *class, char *buf)
-{
- return sprintf(buf, "%d\n", IB_USER_MAD_ABI_VERSION);
+ return ret;
}
-static CLASS_ATTR(abi_version, S_IRUGO, show_abi_version, NULL);
static int ib_umad_init_port(struct ib_device *device, int port_num,
struct ib_umad_port *port)
{
- spin_lock(&map_lock);
- port->devnum = find_first_zero_bit(dev_map, IB_UMAD_MAX_PORTS);
- if (port->devnum >= IB_UMAD_MAX_PORTS) {
- spin_unlock(&map_lock);
- return -1;
- }
- port->sm_devnum = find_next_zero_bit(dev_map, IB_UMAD_MAX_PORTS * 2, IB_UMAD_MAX_PORTS);
- if (port->sm_devnum >= IB_UMAD_MAX_PORTS * 2) {
- spin_unlock(&map_lock);
- return -1;
+ int devnum;
+ dev_t base;
+
+ spin_lock(&port_lock);
+ devnum = find_first_zero_bit(dev_map, IB_UMAD_MAX_PORTS);
+ if (devnum >= IB_UMAD_MAX_PORTS) {
+ spin_unlock(&port_lock);
+ devnum = find_overflow_devnum();
+ if (devnum < 0)
+ return -1;
+
+ spin_lock(&port_lock);
+ port->dev_num = devnum + IB_UMAD_MAX_PORTS;
+ base = devnum + overflow_maj;
+ set_bit(devnum, overflow_map);
+ } else {
+ port->dev_num = devnum;
+ base = devnum + base_dev;
+ set_bit(devnum, dev_map);
}
- set_bit(port->devnum, dev_map);
- set_bit(port->sm_devnum, dev_map);
- spin_unlock(&map_lock);
+ spin_unlock(&port_lock);
port->ib_dev = device;
port->port_num = port_num;
init_MUTEX(&port->sm_sem);
+ mutex_init(&port->file_mutex);
+ INIT_LIST_HEAD(&port->file_list);
- cdev_init(&port->dev, &umad_fops);
- port->dev.owner = THIS_MODULE;
- kobject_set_name(&port->dev.kobj, "umad%d", port->devnum);
- if (cdev_add(&port->dev, base_dev + port->devnum, 1))
- return -1;
-
- port->class_dev.class = &umad_class;
- port->class_dev.dev = device->dma_device;
-
- snprintf(port->class_dev.class_id, BUS_ID_SIZE, "umad%d", port->devnum);
-
- if (class_device_register(&port->class_dev))
+ cdev_init(&port->cdev, &umad_fops);
+ port->cdev.owner = THIS_MODULE;
+ kobject_set_name(&port->cdev.kobj, "umad%d", port->dev_num);
+ if (cdev_add(&port->cdev, base, 1))
goto err_cdev;
- class_set_devdata(&port->class_dev, port);
- kref_get(&port->umad_dev->ref);
-
- if (class_device_create_file(&port->class_dev, &class_device_attr_dev))
- goto err_class;
- if (class_device_create_file(&port->class_dev, &class_device_attr_ibdev))
- goto err_class;
- if (class_device_create_file(&port->class_dev, &class_device_attr_port))
- goto err_class;
-
- cdev_init(&port->sm_dev, &umad_sm_fops);
- port->sm_dev.owner = THIS_MODULE;
- kobject_set_name(&port->dev.kobj, "issm%d", port->sm_devnum - IB_UMAD_MAX_PORTS);
- if (cdev_add(&port->sm_dev, base_dev + port->sm_devnum, 1))
- return -1;
-
- port->sm_class_dev.class = &umad_class;
- port->sm_class_dev.dev = device->dma_device;
+ port->dev = device_create(umad_class, device->dma_device,
+ port->cdev.dev, port,
+ "umad%d", port->dev_num);
+ if (IS_ERR(port->dev))
+ goto err_cdev;
- snprintf(port->sm_class_dev.class_id, BUS_ID_SIZE, "issm%d", port->sm_devnum - IB_UMAD_MAX_PORTS);
+ if (device_create_file(port->dev, &dev_attr_ibdev))
+ goto err_dev;
+ if (device_create_file(port->dev, &dev_attr_port))
+ goto err_dev;
- if (class_device_register(&port->sm_class_dev))
+ base += IB_UMAD_MAX_PORTS;
+ cdev_init(&port->sm_cdev, &umad_sm_fops);
+ port->sm_cdev.owner = THIS_MODULE;
+ kobject_set_name(&port->sm_cdev.kobj, "issm%d", port->dev_num);
+ if (cdev_add(&port->sm_cdev, base, 1))
goto err_sm_cdev;
- class_set_devdata(&port->sm_class_dev, port);
- kref_get(&port->umad_dev->ref);
+ port->sm_dev = device_create(umad_class, device->dma_device,
+ port->sm_cdev.dev, port,
+ "issm%d", port->dev_num);
+ if (IS_ERR(port->sm_dev))
+ goto err_sm_cdev;
- if (class_device_create_file(&port->sm_class_dev, &class_device_attr_dev))
- goto err_sm_class;
- if (class_device_create_file(&port->sm_class_dev, &class_device_attr_ibdev))
- goto err_sm_class;
- if (class_device_create_file(&port->sm_class_dev, &class_device_attr_port))
- goto err_sm_class;
+ if (device_create_file(port->sm_dev, &dev_attr_ibdev))
+ goto err_sm_dev;
+ if (device_create_file(port->sm_dev, &dev_attr_port))
+ goto err_sm_dev;
return 0;
-err_sm_class:
- class_device_unregister(&port->sm_class_dev);
+err_sm_dev:
+ device_destroy(umad_class, port->sm_cdev.dev);
err_sm_cdev:
- cdev_del(&port->sm_dev);
+ cdev_del(&port->sm_cdev);
-err_class:
- class_device_unregister(&port->class_dev);
+err_dev:
+ device_destroy(umad_class, port->cdev.dev);
err_cdev:
- cdev_del(&port->dev);
- clear_bit(port->devnum, dev_map);
+ cdev_del(&port->cdev);
+ if (port->dev_num < IB_UMAD_MAX_PORTS)
+ clear_bit(devnum, dev_map);
+ else
+ clear_bit(devnum, overflow_map);
return -1;
}
+static void ib_umad_kill_port(struct ib_umad_port *port)
+{
+ struct ib_umad_file *file;
+ int already_dead;
+ int id;
+
+ dev_set_drvdata(port->dev, NULL);
+ dev_set_drvdata(port->sm_dev, NULL);
+
+ device_destroy(umad_class, port->cdev.dev);
+ device_destroy(umad_class, port->sm_cdev.dev);
+
+ cdev_del(&port->cdev);
+ cdev_del(&port->sm_cdev);
+
+ mutex_lock(&port->file_mutex);
+
+ port->ib_dev = NULL;
+
+ list_for_each_entry(file, &port->file_list, port_list) {
+ mutex_lock(&file->mutex);
+ already_dead = file->agents_dead;
+ file->agents_dead = 1;
+ mutex_unlock(&file->mutex);
+
+ for (id = 0; id < IB_UMAD_MAX_AGENTS; ++id)
+ if (file->agent[id])
+ ib_unregister_mad_agent(file->agent[id]);
+ }
+
+ mutex_unlock(&port->file_mutex);
+
+ if (port->dev_num < IB_UMAD_MAX_PORTS)
+ clear_bit(port->dev_num, dev_map);
+ else
+ clear_bit(port->dev_num - IB_UMAD_MAX_PORTS, overflow_map);
+}
+
static void ib_umad_add_one(struct ib_device *device)
{
struct ib_umad_device *umad_dev;
int s, e, i;
- if (device->node_type == IB_NODE_SWITCH)
+ if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
+ return;
+
+ if (device->node_type == RDMA_NODE_IB_SWITCH)
s = e = 0;
else {
s = 1;
e = device->phys_port_cnt;
}
- umad_dev = kmalloc(sizeof *umad_dev +
+ umad_dev = kzalloc(sizeof *umad_dev +
(e - s + 1) * sizeof (struct ib_umad_port),
GFP_KERNEL);
if (!umad_dev)
return;
- memset(umad_dev, 0, sizeof *umad_dev +
- (e - s + 1) * sizeof (struct ib_umad_port));
-
kref_init(&umad_dev->ref);
umad_dev->start_port = s;
return;
err:
- while (--i >= s) {
- class_device_unregister(&umad_dev->port[i - s].class_dev);
- class_device_unregister(&umad_dev->port[i - s].sm_class_dev);
- }
+ while (--i >= s)
+ ib_umad_kill_port(&umad_dev->port[i - s]);
kref_put(&umad_dev->ref, ib_umad_release_dev);
}
if (!umad_dev)
return;
- for (i = 0; i <= umad_dev->end_port - umad_dev->start_port; ++i) {
- class_device_unregister(&umad_dev->port[i].class_dev);
- class_device_unregister(&umad_dev->port[i].sm_class_dev);
- }
+ for (i = 0; i <= umad_dev->end_port - umad_dev->start_port; ++i)
+ ib_umad_kill_port(&umad_dev->port[i]);
kref_put(&umad_dev->ref, ib_umad_release_dev);
}
{
int ret;
- spin_lock_init(&map_lock);
-
ret = register_chrdev_region(base_dev, IB_UMAD_MAX_PORTS * 2,
"infiniband_mad");
if (ret) {
goto out;
}
- ret = class_register(&umad_class);
- if (ret) {
+ umad_class = class_create(THIS_MODULE, "infiniband_mad");
+ if (IS_ERR(umad_class)) {
+ ret = PTR_ERR(umad_class);
printk(KERN_ERR "user_mad: couldn't create class infiniband_mad\n");
goto out_chrdev;
}
- ret = class_create_file(&umad_class, &class_attr_abi_version);
+ ret = class_create_file(umad_class, &class_attr_abi_version.attr);
if (ret) {
printk(KERN_ERR "user_mad: couldn't create abi_version attribute\n");
goto out_class;
return 0;
out_class:
- class_unregister(&umad_class);
+ class_destroy(umad_class);
out_chrdev:
unregister_chrdev_region(base_dev, IB_UMAD_MAX_PORTS * 2);
static void __exit ib_umad_cleanup(void)
{
ib_unregister_client(&umad_client);
- class_unregister(&umad_class);
+ class_destroy(umad_class);
unregister_chrdev_region(base_dev, IB_UMAD_MAX_PORTS * 2);
+ if (overflow_maj)
+ unregister_chrdev_region(overflow_maj, IB_UMAD_MAX_PORTS * 2);
}
module_init(ib_umad_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff