providers/irdma: Fix CQ size validation

[ Upstream commit c58dfc3 ] Taking into account a reserved entry to detect overflow. Fixes: 14a0fc8 ("rdma-core/irdma: Implement device supported verb APIs") Signed-off-by: Kamal Heib <[email protected]> Signed-off-by: Nicolas Morey <[email protected]>
linux-rdma · Jul 6, 2023 · 294c43d · 294c43d
1 parent c23736e
commit 294c43d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/providers/irdma/uverbs.c b/providers/irdma/uverbs.c
@@ -331,7 +331,7 @@ static struct ibv_cq_ex *ucreate_cq(struct ibv_context *context,
  return NULL;
  }
 
- if (attr_ex->cqe < IRDMA_MIN_CQ_SIZE || attr_ex->cqe > uk_attrs->max_hw_cq_size) {
+ if (attr_ex->cqe < IRDMA_MIN_CQ_SIZE || attr_ex->cqe > uk_attrs->max_hw_cq_size - 1) {
  errno = EINVAL;
  return NULL;
  }