[PATCH net-next 02/10] net/mlx4_core: Mask out host side virtualization features for guests
From: Or Gerlitz <hidden>
Date: 2014-12-04 13:14:00
Subsystem:
mellanox mlx4 core vpi driver, networking drivers, the rest · Maintainers:
Tariq Toukan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
When VFs (guests in this context) issue the QUERY_DEV_CAP command, they need not be told that host side virtualization features such as VST, FSM (MAC anti-spoofing) and running > 80 VFs are supported by the device. Signed-off-by: Or Gerlitz <redacted> --- drivers/net/ethernet/mellanox/mlx4/fw.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 4251f81..8c9ea70 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c@@ -982,7 +982,7 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave, u64 flags; int err = 0; u8 field; - u32 bmme_flags; + u32 bmme_flags, field32; int real_port; int slave_port; int first_port;
@@ -1053,6 +1053,11 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave, field &= ~0x80; MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET); + /* turn off host side virt features (VST, FSM, etc) for guests */ + MLX4_GET(field32, outbox->buf, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET); + field32 &= ~((1 << 26) | (1 << 21) | (1 << 20)); + MLX4_PUT(outbox->buf, field32, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET); + return 0; }
--
1.7.1