IB/mlx5: Add support for resize CQ

Implement resize CQ which is a mandatory verb in mlx5.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

2 files changed, 12 insertions, 2 deletions

diff --git a/include/linux/mlx5/cq.h b/include/linux/mlx5/cq.h
index c3cf5a46abce..2202c7f72b75 100644
--- a/include/linux/mlx5/cq.h
+++ b/include/linux/mlx5/cq.h
@@ -79,9 +79,10 @@ enum {
         MLX5_CQE_RESP_SEND      = 2,
         MLX5_CQE_RESP_SEND_IMM  = 3,
         MLX5_CQE_RESP_SEND_INV  = 4,
-        MLX5_CQE_RESIZE_CQ      = 0xff, /* TBD */
+        MLX5_CQE_RESIZE_CQ      = 5,
         MLX5_CQE_REQ_ERR        = 13,
         MLX5_CQE_RESP_ERR       = 14,
+        MLX5_CQE_INVALID        = 15,
 };
 
 enum {
@@ -90,6 +91,13 @@ enum {
         MLX5_CQ_MODIFY_OVERRUN  = 1 << 2,
 };
 
+enum {
+        MLX5_CQ_OPMOD_RESIZE            = 1,
+        MLX5_MODIFY_CQ_MASK_LOG_SIZE    = 1 << 0,
+        MLX5_MODIFY_CQ_MASK_PG_OFFSET   = 1 << 1,
+        MLX5_MODIFY_CQ_MASK_PG_SIZE     = 1 << 2,
+};
+
 struct mlx5_cq_modify_params {
         int     type;
         union {
@@ -158,7 +166,7 @@ int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
 int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
                        struct mlx5_query_cq_mbox_out *out);
 int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
-                        struct mlx5_modify_cq_mbox_in *in);
+                        struct mlx5_modify_cq_mbox_in *in, int in_sz);
 int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
 void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
 
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index dbb03caa8aed..87e23717df70 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -178,6 +178,7 @@ enum {
         MLX5_DEV_CAP_FLAG_ATOMIC        = 1LL << 18,
         MLX5_DEV_CAP_FLAG_ON_DMND_PG    = 1LL << 24,
         MLX5_DEV_CAP_FLAG_CQ_MODER      = 1LL << 29,
+        MLX5_DEV_CAP_FLAG_RESIZE_CQ     = 1LL << 30,
         MLX5_DEV_CAP_FLAG_RESIZE_SRQ    = 1LL << 32,
         MLX5_DEV_CAP_FLAG_REMOTE_FENCE  = 1LL << 38,
         MLX5_DEV_CAP_FLAG_TLP_HINTS     = 1LL << 39,
@@ -710,6 +711,7 @@ struct mlx5_modify_cq_mbox_in {
 
 struct mlx5_modify_cq_mbox_out {
         struct mlx5_outbox_hdr  hdr;
+        u8                      rsvd[8];
 };
 
 struct mlx5_enable_hca_mbox_in {