IB/mlx4: Support memory window binding

* Implement memory windows binding in mlx4_ib_post_send.

* Implement mlx4_ib_bind_mw by deferring to mlx4_ib_post_send.

* Rename MLX4_WQE_FMR_PERM_* flags to MLX4_WQE_FMR_AND_BIND_PERM_*,
  indicating that they are used both for fast registration work
  requests, and for memory window bind work requests.

Signed-off-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Shani Michaeli <shanim@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h
index 6c8a68c602be..67f46ad6920a 100644
--- a/include/linux/mlx4/qp.h
+++ b/include/linux/mlx4/qp.h
@@ -265,6 +265,11 @@ struct mlx4_wqe_lso_seg {
         __be32                  header[0];
 };
 
+enum mlx4_wqe_bind_seg_flags2 {
+        MLX4_WQE_BIND_ZERO_BASED = (1 << 30),
+        MLX4_WQE_BIND_TYPE_2     = (1 << 31),
+};
+
 struct mlx4_wqe_bind_seg {
         __be32                  flags1;
         __be32                  flags2;
@@ -277,9 +282,9 @@ struct mlx4_wqe_bind_seg {
 enum {
         MLX4_WQE_FMR_PERM_LOCAL_READ    = 1 << 27,
         MLX4_WQE_FMR_PERM_LOCAL_WRITE   = 1 << 28,
-        MLX4_WQE_FMR_PERM_REMOTE_READ   = 1 << 29,
-        MLX4_WQE_FMR_PERM_REMOTE_WRITE  = 1 << 30,
-        MLX4_WQE_FMR_PERM_ATOMIC        = 1 << 31
+        MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_READ  = 1 << 29,
+        MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_WRITE = 1 << 30,
+        MLX4_WQE_FMR_AND_BIND_PERM_ATOMIC       = 1 << 31
 };
 
 struct mlx4_wqe_fmr_seg {