Date: Mon, 7 Oct 2019 08:40:34 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r353189 - stable/11/sys/dev/mlx5/mlx5_core Message-ID: <201910070840.x978eYZb054652@repo.freebsd.org>
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Author: hselasky Date: Mon Oct 7 08:40:34 2019 New Revision: 353189 URL: https://svnweb.freebsd.org/changeset/base/353189 Log: MFC r352958: 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. Sponsored by: Mellanox Technologies Modified: stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c ============================================================================== --- stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c Mon Oct 7 08:39:55 2019 (r353188) +++ stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c Mon Oct 7 08:40:34 2019 (r353189) @@ -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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