net/mlx5: Add bits and fields to support enhanced CQE compression

[sfrench/cifs-2.6.git] / include / linux / mlx5 / device.h

diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 95a4fa0fd40a8ac55c7d9de69b6a4f9b1a59305a..b5f58fd37a0f75905a86a6253861e1bd05bfb9e7 100644 (file)
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -822,7 +822,10 @@ struct mlx5_cqe64 {
        __be32          timestamp_l;
        __be32          sop_drop_qpn;
        __be16          wqe_counter;
-       u8              signature;
+       union {
+               u8      signature;
+               u8      validity_iteration_count;
+       };
        u8              op_own;
 };
 
@@ -854,6 +857,11 @@ enum {
        MLX5_CQE_FORMAT_CSUM_STRIDX = 0x3,
 };
 
+enum {
+       MLX5_CQE_COMPRESS_LAYOUT_BASIC = 0,
+       MLX5_CQE_COMPRESS_LAYOUT_ENHANCED = 1,
+};
+
 #define MLX5_MINI_CQE_ARRAY_SIZE 8
 
 static inline u8 mlx5_get_cqe_format(struct mlx5_cqe64 *cqe)
@@ -866,6 +874,12 @@ static inline u8 get_cqe_opcode(struct mlx5_cqe64 *cqe)
        return cqe->op_own >> 4;
 }
 
+static inline u8 get_cqe_enhanced_num_mini_cqes(struct mlx5_cqe64 *cqe)
+{
+       /* num_of_mini_cqes is zero based */
+       return get_cqe_opcode(cqe) + 1;
+}
+
 static inline u8 get_cqe_lro_tcppsh(struct mlx5_cqe64 *cqe)
 {
        return (cqe->lro.tcppsh_abort_dupack >> 6) & 1;