From d019fcb2244519d453694bfce868f3e717bfcebb Mon Sep 17 00:00:00 2001 From: Ido Shamay Date: Thu, 2 Apr 2015 16:31:13 +0300 Subject: [PATCH] net/mlx4: Query device for QoS per VF support Checks in QUERY_DEV_CAP if the granular QoS per VF feature is supported by the device. Disabled for guests. Signed-off-by: Ido Shamay Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/fw.c | 10 +++++++++- include/linux/mlx4/device.h | 3 ++- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c index 412e019e8b2e..94e857e39063 100644 --- a/drivers/net/ethernet/mellanox/mlx4/fw.c +++ b/drivers/net/ethernet/mellanox/mlx4/fw.c @@ -147,7 +147,8 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags) [21] = "Port Remap support", [22] = "QCN support", [23] = "QP rate limiting support", - [24] = "Ethernet Flow control statistics support" + [24] = "Ethernet Flow control statistics support", + [25] = "Granular QoS per VF support", }; int i; @@ -871,6 +872,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET); dev_cap->max_rq_desc_sz = size; MLX4_GET(field, outbox, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE); + if (field & (1 << 4)) + dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_QOS_VPP; if (field & (1 << 5)) dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL; if (field & (1 << 6)) @@ -1199,6 +1202,11 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave, field16 = 0; MLX4_PUT(outbox->buf, field16, QUERY_DEV_CAP_QP_RATE_LIMIT_NUM_OFFSET); + /* turn off QoS per VF support for guests */ + MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE); + field &= 0xef; + MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE); + return 0; } diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index b676d0c0111a..c37208f7869f 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -205,7 +205,8 @@ enum { MLX4_DEV_CAP_FLAG2_PORT_REMAP = 1LL << 21, MLX4_DEV_CAP_FLAG2_QCN = 1LL << 22, MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT = 1LL << 23, - MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN = 1LL << 24 + MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN = 1LL << 24, + MLX4_DEV_CAP_FLAG2_QOS_VPP = 1LL << 25, }; enum { -- GitLab