IB/mthca: check RDMA limits
Add limit checking on rd_atomic and dest_rd_atomic attributes: especially for max_dest_rd_atomic, a value that is larger than HCA capability can cause RDB overflow and corruption of another QP. Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
parent
52d0df153c
commit
94361cf74a
|
@ -591,6 +591,20 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
|
|||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
|
||||
attr->max_rd_atomic > dev->limits.max_qp_init_rdma) {
|
||||
mthca_dbg(dev, "Max rdma_atomic as initiator %u too large (max is %d)\n",
|
||||
attr->max_rd_atomic, dev->limits.max_qp_init_rdma);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
|
||||
attr->max_dest_rd_atomic > 1 << dev->qp_table.rdb_shift) {
|
||||
mthca_dbg(dev, "Max rdma_atomic as responder %u too large (max %d)\n",
|
||||
attr->max_dest_rd_atomic, 1 << dev->qp_table.rdb_shift);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
|
||||
if (IS_ERR(mailbox))
|
||||
return PTR_ERR(mailbox);
|
||||
|
|
Loading…
Reference in a new issue