diff options
| author | Daniel Jurgens <danielj@mellanox.com> | 2018-11-21 18:12:05 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-22 22:38:36 +0300 |
| commit | e45678973dcbb131f29a6c90b0ea3829f38eeab8 (patch) | |
| tree | 7c832cf06e48233a27040f9134bd70b14d77debf /drivers/net/ethernet/mellanox/mlx4/fw.c | |
| parent | 1d0795ea9ca37be0fa0823776e0367b8fc398c91 (diff) | |
| download | linux-e45678973dcbb131f29a6c90b0ea3829f38eeab8.tar.xz | |
{net, IB}/mlx4: Initialize CQ buffers in the driver when possible
Perform CQ initialization in the driver when the capability is supported
by the FW. When passing the CQ to HW indicate that the CQ buffer has
been pre-initialized.
Doing so decreases CQ creation time. Testing on P8 showed a single 2048
entry CQ creation time was reduced from ~395us to ~170us, which is
2.3x faster.
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/fw.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c index babcfd9c0571..7df728f1e5b5 100644 --- a/drivers/net/ethernet/mellanox/mlx4/fw.c +++ b/drivers/net/ethernet/mellanox/mlx4/fw.c @@ -166,6 +166,7 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags) [37] = "sl to vl mapping table change event support", [38] = "user MAC support", [39] = "Report driver version to FW support", + [40] = "SW CQ initialization support", }; int i; @@ -1098,6 +1099,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_FSM; if (field32 & (1 << 21)) dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_80_VFS; + if (field32 & (1 << 23)) + dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_SW_CQ_INIT; for (i = 1; i <= dev_cap->num_ports; i++) { err = mlx4_QUERY_PORT(dev, i, dev_cap->port_cap + i); |