IB/mlx5: Fix micro UAR allocator
The micro UAR (uuar) allocator had a bug which resulted from the fact
that in each UAR we only have two micro UARs avaialable, those at
index 0 and 1. This patch defines iterators to aid in traversing the
list of available micro UARs when allocating a uuar.
In addition, change the logic in create_user_qp() so that if high
class allocation fails (high class means lower latency), we revert to
medium class and not to the low class.
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index da78875..2c1c62e 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -104,9 +104,10 @@
};
enum {
- MLX5_BF_REGS_PER_PAGE = 4,
- MLX5_MAX_UAR_PAGES = 1 << 8,
- MLX5_MAX_UUARS = MLX5_MAX_UAR_PAGES * MLX5_BF_REGS_PER_PAGE,
+ MLX5_BF_REGS_PER_PAGE = 4,
+ MLX5_MAX_UAR_PAGES = 1 << 8,
+ MLX5_NON_FP_BF_REGS_PER_PAGE = 2,
+ MLX5_MAX_UUARS = MLX5_MAX_UAR_PAGES * MLX5_NON_FP_BF_REGS_PER_PAGE,
};
enum {