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| author | Huy Nguyen <huyn@mellanox.com> | 2017-05-30 09:42:54 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-07-24 10:29:18 -0400 |
| commit | c85023e153e3824661d07307138fdeff41f6d86a (patch) | |
| tree | 037281702fea8a91a6aa5ed45676beadc0b9ccba /drivers/net/ethernet | |
| parent | bded747bb432bc5f7ad6d84ea747368b70ed9df2 (diff) | |
| download | linux-c85023e153e3824661d07307138fdeff41f6d86a.tar.gz linux-c85023e153e3824661d07307138fdeff41f6d86a.tar.xz | |
IB/mlx5: Add raw ethernet local loopback support
Currently, unicast/multicast loopback raw ethernet
(non-RDMA) packets are sent back to the vport.
A unicast loopback packet is the packet with destination
MAC address the same as the source MAC address.
For multicast, the destination MAC address is in the
vport's multicast filter list.
Moreover, the local loopback is not needed if
there is one or none user space context.
After this patch, the raw ethernet unicast and multicast
local loopback are disabled by default. When there is more
than one user space context, the local loopback is enabled.
Note that when local loopback is disabled, raw ethernet
packets are not looped back to the vport and are forwarded
to the next routing level (eswitch, or multihost switch,
or out to the wire depending on the configuration).
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/main.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index c065132b956d..3cec683fd70f 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -47,6 +47,7 @@ #include <linux/debugfs.h> #include <linux/kmod.h> #include <linux/mlx5/mlx5_ifc.h> +#include <linux/mlx5/vport.h> #ifdef CONFIG_RFS_ACCEL #include <linux/cpu_rmap.h> #endif @@ -579,6 +580,18 @@ static int set_hca_ctrl(struct mlx5_core_dev *dev) return err; } +static int mlx5_core_set_hca_defaults(struct mlx5_core_dev *dev) +{ + int ret = 0; + + /* Disable local_lb by default */ + if ((MLX5_CAP_GEN(dev, port_type) == MLX5_CAP_PORT_TYPE_ETH) && + MLX5_CAP_GEN(dev, disable_local_lb)) + ret = mlx5_nic_vport_update_local_lb(dev, false); + + return ret; +} + int mlx5_core_enable_hca(struct mlx5_core_dev *dev, u16 func_id) { u32 out[MLX5_ST_SZ_DW(enable_hca_out)] = {0}; @@ -1155,6 +1168,12 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv, goto err_fs; } + err = mlx5_core_set_hca_defaults(dev); + if (err) { + dev_err(&pdev->dev, "Failed to set hca defaults\n"); + goto err_fs; + } + #ifdef CONFIG_MLX5_CORE_EN mlx5_eswitch_attach(dev->priv.eswitch); #endif |