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Message-Id: <1362664017-30275-2-git-send-email-ogerlitz@mellanox.com> Date: Thu, 7 Mar 2013 15:46:52 +0200 From: Or Gerlitz <ogerlitz@...lanox.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, amirv@...lanox.com, Jack Morgenstein <jackm@....mellanox.co.il>, Or Gerlitz <ogerlitz@...lanox.com> Subject: [PATCH net 1/6] net/mlx4_core: Disable mlx4_QP_ATTACH calls from guests if the host uses flow steering From: Jack Morgenstein <jackm@....mellanox.co.il> Guests kernels may not correctly detect if DMFS (device-enabled flow steering) is activated by the host. If DMFS is activated, the master should return error to guests which try to use the B0-steering flow calls (mlx4_QP_ATTACH). Signed-off-by: Jack Morgenstein <jackm@....mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com> --- .../net/ethernet/mellanox/mlx4/resource_tracker.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index 083fb48..2995687 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -2990,6 +2990,9 @@ int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave, u8 steer_type_mask = 2; enum mlx4_steer_type type = (gid[7] & steer_type_mask) >> 1; + if (dev->caps.steering_mode != MLX4_STEERING_MODE_B0) + return -EINVAL; + qpn = vhcr->in_modifier & 0xffffff; err = get_res(dev, slave, qpn, RES_QP, &rqp); if (err) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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