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net/mlx4: Query device for QoS per VF support

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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 <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Shamay 2015-04-02 16:31:13 +03:00 committed by David S. Miller
parent 1c29146d38
commit d019fcb224
2 changed files with 11 additions and 2 deletions
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10
drivers/net/ethernet/mellanox/mlx4/fw.c
View File

@ -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;
}

3
include/linux/mlx4/device.h
View File

@ -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 {