QP may be freed during Async Event processing.
Add a lock around QP table to prevent it.
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
u32 arp_table_size;
u32 next_arp_index;
spinlock_t resource_lock; /* hw resource access */
u32 arp_table_size;
u32 next_arp_index;
spinlock_t resource_lock; /* hw resource access */
+ spinlock_t qptable_lock;
u32 vendor_id;
u32 vendor_part_id;
u32 of_device_registered;
u32 vendor_id;
u32 vendor_part_id;
u32 of_device_registered;
set_bit(2, iwdev->allocated_pds);
spin_lock_init(&iwdev->resource_lock);
set_bit(2, iwdev->allocated_pds);
spin_lock_init(&iwdev->resource_lock);
+ spin_lock_init(&iwdev->qptable_lock);
mrdrvbits = 24 - get_count_order(iwdev->max_mr);
iwdev->mr_stagmask = ~(((1 << mrdrvbits) - 1) << (32 - mrdrvbits));
return 0;
mrdrvbits = 24 - get_count_order(iwdev->max_mr);
iwdev->mr_stagmask = ~(((1 << mrdrvbits) - 1) << (32 - mrdrvbits));
return 0;
"%s ae_id = 0x%x bool qp=%d qp_id = %d\n",
__func__, info->ae_id, info->qp, info->qp_cq_id);
if (info->qp) {
"%s ae_id = 0x%x bool qp=%d qp_id = %d\n",
__func__, info->ae_id, info->qp, info->qp_cq_id);
if (info->qp) {
+ spin_lock_irqsave(&iwdev->qptable_lock, flags);
iwqp = iwdev->qp_table[info->qp_cq_id];
if (!iwqp) {
iwqp = iwdev->qp_table[info->qp_cq_id];
if (!iwqp) {
+ spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
i40iw_pr_err("qp_id %d is already freed\n", info->qp_cq_id);
continue;
}
i40iw_pr_err("qp_id %d is already freed\n", info->qp_cq_id);
continue;
}
+ i40iw_add_ref(&iwqp->ibqp);
+ spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
qp = &iwqp->sc_qp;
spin_lock_irqsave(&iwqp->lock, flags);
iwqp->hw_tcp_state = info->tcp_state;
qp = &iwqp->sc_qp;
spin_lock_irqsave(&iwqp->lock, flags);
iwqp->hw_tcp_state = info->tcp_state;
i40iw_terminate_connection(qp, info);
break;
}
i40iw_terminate_connection(qp, info);
break;
}
+ if (info->qp)
+ i40iw_rem_ref(&iwqp->ibqp);
struct cqp_commands_info *cqp_info;
struct i40iw_device *iwdev;
u32 qp_num;
struct cqp_commands_info *cqp_info;
struct i40iw_device *iwdev;
u32 qp_num;
- if (!atomic_dec_and_test(&iwqp->refcount))
+ iwdev = iwqp->iwdev;
+ spin_lock_irqsave(&iwdev->qptable_lock, flags);
+ if (!atomic_dec_and_test(&iwqp->refcount)) {
+ spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
qp_num = iwqp->ibqp.qp_num;
iwdev->qp_table[qp_num] = NULL;
qp_num = iwqp->ibqp.qp_num;
iwdev->qp_table[qp_num] = NULL;
+ spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
if (!cqp_request)
return;
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
if (!cqp_request)
return;