svn commit: r352958 - head/sys/dev/mlx5/mlx5_core
Hans Petter Selasky
hselasky at FreeBSD.org
Wed Oct 2 09:12:54 UTC 2019
Author: hselasky
Date: Wed Oct 2 09:12:53 2019
New Revision: 352958
URL: https://svnweb.freebsd.org/changeset/base/352958
Log:
Make sure the number of IRQ vectors doesn't exceed 256 in mlx5core.
The "intr" field in "struct mlx5_ifc_eqc_bits" is only 8 bits wide.
MFC after: 3 days
Sponsored by: Mellanox Technologies
Modified:
head/sys/dev/mlx5/mlx5_core/mlx5_main.c
Modified: head/sys/dev/mlx5/mlx5_core/mlx5_main.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_core/mlx5_main.c Wed Oct 2 09:11:01 2019 (r352957)
+++ head/sys/dev/mlx5/mlx5_core/mlx5_main.c Wed Oct 2 09:12:53 2019 (r352958)
@@ -275,7 +275,10 @@ static int mlx5_enable_msix(struct mlx5_core_dev *dev)
else
nvec += MLX5_CAP_GEN(dev, num_ports) * num_online_cpus();
- nvec = min_t(int, nvec, num_eqs);
+ if (nvec > num_eqs)
+ nvec = num_eqs;
+ if (nvec > 256)
+ nvec = 256; /* limit of firmware API */
if (nvec <= MLX5_EQ_VEC_COMP_BASE)
return -ENOMEM;
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