proc: revert /proc/<pid>/maps [stack:TID] annotation

[firefly-linux-kernel-4.4.55.git] / include / linux / mlx4 / device.h

diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 7501626ab5293414c29df692edb6fa7122871c84..d3133be12d922521e24528480edbdb31659a7007 100644 (file)
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -426,6 +426,17 @@ enum {
        MLX4_MAX_FAST_REG_PAGES = 511,
 };
 
+enum {
+       /*
+        * Max wqe size for rdma read is 512 bytes, so this
+        * limits our max_sge_rd as the wqe needs to fit:
+        * - ctrl segment (16 bytes)
+        * - rdma segment (16 bytes)
+        * - scatter elements (16 bytes each)
+        */
+       MLX4_MAX_SGE_RD = (512 - 16 - 16) / 16
+};
+
 enum {
        MLX4_DEV_PMC_SUBTYPE_GUID_INFO   = 0x14,
        MLX4_DEV_PMC_SUBTYPE_PORT_INFO   = 0x15,