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net/mlx5e: Add ethtool support for rxvlan-offload (vlan stripping) 

Use ethtool -K <interface> rxvlan <on/off> to enable/disable
C-TAG vlan stripping by hardware.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gal Pressman 2016-04-24 22:51:55 +03:00 committed by David S. Miller
parent bb64143eee
commit 363501145e
3 changed files with 78 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/mellanox/mlx5/core/en.h
View File

@ -166,6 +166,7 @@ struct mlx5e_params {
u8 rss_hfunc;
u8 toeplitz_hash_key[40];
u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE];
bool vlan_strip_disable;
#ifdef CONFIG_MLX5_CORE_EN_DCB
struct ieee_ets ets;
#endif
@ -575,6 +576,8 @@ int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
void mlx5e_enable_vlan_filter(struct mlx5e_priv *priv);
void mlx5e_disable_vlan_filter(struct mlx5e_priv *priv);
int mlx5e_modify_rqs_vsd(struct mlx5e_priv *priv, bool vsd);
int mlx5e_redirect_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix);
void mlx5e_build_tir_ctx_hash(void *tirc, struct mlx5e_priv *priv);

74
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -388,6 +388,7 @@ static int mlx5e_enable_rq(struct mlx5e_rq *rq, struct mlx5e_rq_param *param)
MLX5_SET(rqc, rqc, cqn, rq->cq.mcq.cqn);
MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
MLX5_SET(rqc, rqc, flush_in_error_en, 1);
MLX5_SET(rqc, rqc, vsd, priv->params.vlan_strip_disable);
MLX5_SET(wq, wq, log_wq_pg_sz, rq->wq_ctrl.buf.page_shift -
MLX5_ADAPTER_PAGE_SHIFT);
MLX5_SET64(wq, wq, dbr_addr, rq->wq_ctrl.db.dma);
@ -402,7 +403,8 @@ static int mlx5e_enable_rq(struct mlx5e_rq *rq, struct mlx5e_rq_param *param)
return err;
}
static int mlx5e_modify_rq(struct mlx5e_rq *rq, int curr_state, int next_state)
static int mlx5e_modify_rq_state(struct mlx5e_rq *rq, int curr_state,
int next_state)
{
struct mlx5e_channel *c = rq->channel;
struct mlx5e_priv *priv = c->priv;
@ -430,6 +432,36 @@ static int mlx5e_modify_rq(struct mlx5e_rq *rq, int curr_state, int next_state)
return err;
}
static int mlx5e_modify_rq_vsd(struct mlx5e_rq *rq, bool vsd)
{
struct mlx5e_channel *c = rq->channel;
struct mlx5e_priv *priv = c->priv;
struct mlx5_core_dev *mdev = priv->mdev;
void *in;
void *rqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
in = mlx5_vzalloc(inlen);
if (!in)
return -ENOMEM;
rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
MLX5_SET(modify_rq_in, in, rq_state, MLX5_RQC_STATE_RDY);
MLX5_SET64(modify_rq_in, in, modify_bitmask, MLX5_RQ_BITMASK_VSD);
MLX5_SET(rqc, rqc, vsd, vsd);
MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RDY);
err = mlx5_core_modify_rq(mdev, rq->rqn, in, inlen);
kvfree(in);
return err;
}
static void mlx5e_disable_rq(struct mlx5e_rq *rq)
{
mlx5_core_destroy_rq(rq->priv->mdev, rq->rqn);
@ -468,7 +500,7 @@ static int mlx5e_open_rq(struct mlx5e_channel *c,
if (err)
goto err_destroy_rq;
err = mlx5e_modify_rq(rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY);
err = mlx5e_modify_rq_state(rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY);
if (err)
goto err_disable_rq;
@ -493,7 +525,7 @@ static void mlx5e_close_rq(struct mlx5e_rq *rq)
clear_bit(MLX5E_RQ_STATE_POST_WQES_ENABLE, &rq->state);
napi_synchronize(&rq->channel->napi); /* prevent mlx5e_post_rx_wqes */
mlx5e_modify_rq(rq, MLX5_RQC_STATE_RDY, MLX5_RQC_STATE_ERR);
mlx5e_modify_rq_state(rq, MLX5_RQC_STATE_RDY, MLX5_RQC_STATE_ERR);
while (!mlx5_wq_ll_is_empty(&rq->wq))
msleep(20);
@ -1963,6 +1995,23 @@ static void mlx5e_destroy_tirs(struct mlx5e_priv *priv)
mlx5e_destroy_tir(priv, i);
}
int mlx5e_modify_rqs_vsd(struct mlx5e_priv *priv, bool vsd)
{
int err = 0;
int i;
if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
return 0;
for (i = 0; i < priv->params.num_channels; i++) {
err = mlx5e_modify_rq_vsd(&priv->channel[i]->rq, vsd);
if (err)
return err;
}
return 0;
}
static int mlx5e_setup_tc(struct net_device *netdev, u8 tc)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
@ -2147,6 +2196,23 @@ static int set_feature_rx_all(struct net_device *netdev, bool enable)
return mlx5_set_port_fcs(mdev, !enable);
}
static int set_feature_rx_vlan(struct net_device *netdev, bool enable)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
int err;
mutex_lock(&priv->state_lock);
priv->params.vlan_strip_disable = !enable;
err = mlx5e_modify_rqs_vsd(priv, !enable);
if (err)
priv->params.vlan_strip_disable = enable;
mutex_unlock(&priv->state_lock);
return err;
}
static int mlx5e_handle_feature(struct net_device *netdev,
netdev_features_t wanted_features,
netdev_features_t feature,
@ -2184,6 +2250,8 @@ static int mlx5e_set_features(struct net_device *netdev,
set_feature_tc_num_filters);
err |= mlx5e_handle_feature(netdev, features, NETIF_F_RXALL,
set_feature_rx_all);
err |= mlx5e_handle_feature(netdev, features, NETIF_F_HW_VLAN_CTAG_RX,
set_feature_rx_vlan);
return err ? -EINVAL : 0;
}

4
include/linux/mlx5/driver.h
View File

@ -45,6 +45,10 @@
#include <linux/mlx5/device.h>
#include <linux/mlx5/doorbell.h>
enum {
MLX5_RQ_BITMASK_VSD = 1 << 1,
};
enum {
MLX5_BOARD_ID_LEN = 64,
MLX5_MAX_NAME_LEN = 16,