#include <linux/poll.h>
#include <linux/rwsem.h>
#include <linux/kref.h>
+#include <linux/compat.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
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 {
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 port->mutex at least for reading */
static struct ib_mad_agent *__get_agent(struct ib_umad_file *file, int id)
{
packet->length = mad_recv_wc->mad_len;
packet->recv_wc = mad_recv_wc;
- packet->mad.hdr.status = 0;
- packet->mad.hdr.length = sizeof (struct ib_user_mad) +
- 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.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) {
struct ib_ah_attr ah_attr;
ib_free_recv_mad(mad_recv_wc);
}
-static ssize_t copy_recv_mad(char __user *buf, struct ib_umad_packet *packet,
- size_t count)
+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 < sizeof (packet->mad) + packet->length) ||
+ count < hdr_size(file) + packet->length) ||
(packet->length > sizeof (*recv_buf->mad) &&
- count < sizeof (packet->mad) + sizeof (*recv_buf->mad)))
+ count < hdr_size(file) + sizeof (*recv_buf->mad)))
return -EINVAL;
- if (copy_to_user(buf, &packet->mad, sizeof (packet->mad)))
+ if (copy_to_user(buf, &packet->mad, hdr_size(file)))
return -EFAULT;
- buf += sizeof (packet->mad);
+ 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;
* Multipacket RMPP MAD message. Copy remainder of message.
* Note that last segment may have a shorter payload.
*/
- if (count < sizeof (packet->mad) + packet->length) {
+ if (count < hdr_size(file) + packet->length) {
/*
* The buffer is too small, return the first RMPP segment,
* which includes the RMPP message length.
return -EFAULT;
}
}
- return sizeof (packet->mad) + packet->length;
+ return hdr_size(file) + packet->length;
}
-static ssize_t copy_send_mad(char __user *buf, struct ib_umad_packet *packet,
- size_t count)
+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 = sizeof (packet->mad) + packet->length;
+ ssize_t size = hdr_size(file) + packet->length;
if (count < size)
return -EINVAL;
- if (copy_to_user(buf, &packet->mad, size))
+ 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;
struct ib_umad_packet *packet;
ssize_t ret;
- if (count < sizeof (struct ib_user_mad))
+ if (count < hdr_size(file))
return -EINVAL;
spin_lock_irq(&file->recv_lock);
spin_unlock_irq(&file->recv_lock);
if (packet->recv_wc)
- ret = copy_recv_mad(buf, packet, count);
+ ret = copy_recv_mad(file, buf, packet, count);
else
- ret = copy_send_mad(buf, packet, count);
+ ret = copy_send_mad(file, buf, packet, count);
if (ret < 0) {
/* Requeue packet */
__be64 *tid;
int ret, data_len, hdr_len, copy_offset, rmpp_active;
- if (count < sizeof (struct ib_user_mad) + IB_MGMT_RMPP_HDR)
+ if (count < hdr_size(file) + IB_MGMT_RMPP_HDR)
return -EINVAL;
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) + IB_MGMT_RMPP_HDR)) {
+ if (copy_from_user(&packet->mad, buf, hdr_size(file))) {
ret = -EFAULT;
goto err;
}
goto err;
}
+ buf += hdr_size(file);
+
+ if (copy_from_user(packet->mad.data, buf, IB_MGMT_RMPP_HDR)) {
+ ret = -EFAULT;
+ goto err;
+ }
+
down_read(&file->port->mutex);
agent = __get_agent(file, packet->mad.hdr.id);
IB_MGMT_RMPP_FLAG_ACTIVE;
}
- data_len = count - sizeof (struct ib_user_mad) - hdr_len;
+ data_len = count - hdr_size(file) - hdr_len;
packet->msg = ib_create_send_mad(agent,
be32_to_cpu(packet->mad.hdr.qpn),
- 0, 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;
/* Copy MAD header. Any RMPP header is already in place. */
memcpy(packet->msg->mad, packet->mad.data, IB_MGMT_MAD_HDR);
- buf += sizeof (struct ib_user_mad);
if (!rmpp_active) {
if (copy_from_user(packet->msg->mad + copy_offset,
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;
goto out;
}
- if (copy_from_user(&ureq, (void __user *) arg, sizeof ureq)) {
+ if (copy_from_user(&ureq, arg, sizeof ureq)) {
ret = -EFAULT;
goto out;
}
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,
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;
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;
- if (get_user(id, (u32 __user *) arg))
+ if (get_user(id, arg))
return -EFAULT;
down_write(&file->port->mutex);
return ret;
}
+static long ib_umad_enable_pkey(struct ib_umad_file *file)
+{
+ int ret = 0;
+
+ down_write(&file->port->mutex);
+ if (file->already_used)
+ ret = -EINVAL;
+ else
+ file->use_pkey_index = 1;
+ up_write(&file->port->mutex);
+
+ return ret;
+}
+
static long ib_umad_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, 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, (__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, arg);
+ 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
static int ib_umad_open(struct inode *inode, struct file *filp)
{
.write = ib_umad_write,
.poll = ib_umad_poll,
.unlocked_ioctl = ib_umad_ioctl,
- .compat_ioctl = ib_umad_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = ib_umad_compat_ioctl,
+#endif
.open = ib_umad_open,
.release = ib_umad_close
};
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