static void update_sm_ah(struct mthca_dev *dev,
u8 port_num, u16 lid, u8 sl)
{
struct ib_ah *new_ah;
struct ib_ah_attr ah_attr;
unsigned long flags;
if (!dev->send_agent[port_num - 1][0])
return;
memset(&ah_attr, 0, sizeof ah_attr);
ah_attr.dlid = lid;
ah_attr.sl = sl;
ah_attr.port_num = port_num;
new_ah = ib_create_ah(dev->send_agent[port_num - 1][0]->qp->pd,
&ah_attr);
if (IS_ERR(new_ah))
return;
spin_lock_irqsave(&dev->sm_lock, flags);
if (dev->sm_ah[port_num - 1])
ib_destroy_ah(dev->sm_ah[port_num - 1]);
dev->sm_ah[port_num - 1] = new_ah;
spin_unlock_irqrestore(&dev->sm_lock, flags);
}
void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev)
{
struct ib_mad_agent *agent;
int p, q;
for (p = 0; p < dev->num_ports; ++p) {
for (q = 0; q <= 1; ++q) {
agent = dev->send_agent[p][q];
dev->send_agent[p][q] = NULL;
ib_unregister_mad_agent(agent);
}
if (dev->sm_ah[p])
ib_destroy_ah(dev->sm_ah[p]);
}
}
void __devexit mthca_free_agents(struct mthca_dev *dev)
{
struct ib_mad_agent *agent;
int p, q;
for (p = 0; p < dev->limits.num_ports; ++p) {
for (q = 0; q <= 1; ++q) {
agent = dev->send_agent[p][q];
dev->send_agent[p][q] = NULL;
ib_unregister_mad_agent(agent);
}
if (dev->sm_ah[p])
ib_destroy_ah(dev->sm_ah[p]);
}
}
static void verbs_remove_device (struct ib_device *dev)
{
printk (KERN_INFO "IB remove device called. Name = %s\n", dev->name);
if (ah)
ib_destroy_ah (ah);
if (qp)
ib_destroy_qp (qp);
if (send_cq)
ib_destroy_cq (send_cq);
if (recv_cq)
ib_destroy_cq (recv_cq);
if (mr)
ib_dereg_mr (mr);
if (pd)
ib_dealloc_pd (pd);
}
static int send_query(struct sa_db_port *port,
struct update_info *update)
{
int ret;
port->msg = get_sa_msg(port, update);
if (!port->msg)
return -ENOMEM;
format_path_req(port, update, port->msg);
ret = ib_post_send_mad(port->msg, NULL);
if (ret)
goto err;
return 0;
err:
ib_destroy_ah(port->msg->ah);
ib_free_send_mad(port->msg);
return ret;
}
/**
* rvt_free_mad_agents - free up mad agents
* @rdi: rvt dev struct
*
* If driver needs notification of mad agent removal make the call back
*/
void rvt_free_mad_agents(struct rvt_dev_info *rdi)
{
struct ib_mad_agent *agent;
struct rvt_ibport *rvp;
int p;
for (p = 0; p < rdi->dparms.nports; p++) {
rvp = rdi->ports[p];
if (rvp->send_agent) {
agent = rvp->send_agent;
rvp->send_agent = NULL;
ib_unregister_mad_agent(agent);
}
if (rvp->sm_ah) {
ib_destroy_ah(&rvp->sm_ah->ibah);
rvp->sm_ah = NULL;
}
if (rdi->driver_f.notify_free_mad_agent)
rdi->driver_f.notify_free_mad_agent(rdi, p);
}
}
ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
const char __user *buf, int in_len, int out_len)
{
struct ib_uverbs_destroy_ah cmd;
struct ib_ah *ah;
struct ib_uobject *uobj;
int ret = -EINVAL;
if (copy_from_user(&cmd, buf, sizeof cmd))
return -EFAULT;
mutex_lock(&ib_uverbs_idr_mutex);
ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle);
if (!ah || ah->uobject->context != file->ucontext)
goto out;
uobj = ah->uobject;
ret = ib_destroy_ah(ah);
if (ret)
goto out;
idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle);
mutex_lock(&file->mutex);
list_del(&uobj->list);
mutex_unlock(&file->mutex);
kfree(uobj);
out:
mutex_unlock(&ib_uverbs_idr_mutex);
return ret ? ret : in_len;
}
ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len)
{
struct ib_uverbs_create_ah cmd;
struct ib_uverbs_create_ah_resp resp;
struct ib_uobject *uobj;
struct ib_pd *pd;
struct ib_ah *ah;
struct ib_ah_attr attr;
int ret;
if (out_len < sizeof resp)
return -ENOSPC;
if (copy_from_user(&cmd, buf, sizeof cmd))
return -EFAULT;
uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
if (!uobj)
return -ENOMEM;
mutex_lock(&ib_uverbs_idr_mutex);
pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
if (!pd || pd->uobject->context != file->ucontext) {
ret = -EINVAL;
goto err_up;
}
uobj->user_handle = cmd.user_handle;
uobj->context = file->ucontext;
attr.dlid = cmd.attr.dlid;
attr.sl = cmd.attr.sl;
attr.src_path_bits = cmd.attr.src_path_bits;
attr.static_rate = cmd.attr.static_rate;
attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0;
attr.port_num = cmd.attr.port_num;
attr.grh.flow_label = cmd.attr.grh.flow_label;
attr.grh.sgid_index = cmd.attr.grh.sgid_index;
attr.grh.hop_limit = cmd.attr.grh.hop_limit;
attr.grh.traffic_class = cmd.attr.grh.traffic_class;
memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
ah = ib_create_ah(pd, &attr);
if (IS_ERR(ah)) {
ret = PTR_ERR(ah);
goto err_up;
}
ah->uobject = uobj;
retry:
if (!idr_pre_get(&ib_uverbs_ah_idr, GFP_KERNEL)) {
ret = -ENOMEM;
goto err_destroy;
}
ret = idr_get_new(&ib_uverbs_ah_idr, ah, &uobj->id);
if (ret == -EAGAIN)
goto retry;
if (ret)
goto err_destroy;
resp.ah_handle = uobj->id;
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
ret = -EFAULT;
goto err_idr;
}
mutex_lock(&file->mutex);
list_add_tail(&uobj->list, &file->ucontext->ah_list);
mutex_unlock(&file->mutex);
mutex_unlock(&ib_uverbs_idr_mutex);
return in_len;
err_idr:
idr_remove(&ib_uverbs_ah_idr, uobj->id);
err_destroy:
ib_destroy_ah(ah);
err_up:
mutex_unlock(&ib_uverbs_idr_mutex);
kfree(uobj);
return ret;
}
