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net/mlx5: ethtool, Allow legacy link-modes configuration via non-extended ptys

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Allow configuration of legacy link-modes even when extended link-modes
are supported. This requires reading of legacy advertisement even when
extended link-modes are supported. Since legacy and extended
advertisement are mutually excluded, wait for empty reply from extended
advertisement before reading legacy advertisement.

Fixes: 6a89737241 ("net/mlx5: ethtool, Add ethtool support for 50Gbps per lane link modes")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Aya Levin 2019-02-28 09:39:02 +02:00 committed by Saeed Mahameed
parent 8d047bf56a
commit dd1b9e09c1
2 changed files with 31 additions and 19 deletions
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3
drivers/net/ethernet/mellanox/mlx5/core/en/port.c
View File

@ -96,9 +96,6 @@ int mlx5_port_query_eth_proto(struct mlx5_core_dev *dev, u8 port, bool ext,
if (!eproto)
return -EINVAL;
if (ext != MLX5_CAP_PCAM_FEATURE(dev, ptys_extended_ethernet))
return -EOPNOTSUPP;
err = mlx5_query_port_ptys(dev, out, sizeof(out), MLX5_PTYS_EN, port);
if (err)
return err;

47
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View File

@ -603,16 +603,18 @@ static void ptys2ethtool_supported_link(struct mlx5_core_dev *mdev,
__ETHTOOL_LINK_MODE_MASK_NBITS);
}
static void ptys2ethtool_adver_link(struct mlx5_core_dev *mdev,
unsigned long *advertising_modes,
u32 eth_proto_cap)
static void ptys2ethtool_adver_link(unsigned long *advertising_modes,
u32 eth_proto_cap, bool ext)
{
unsigned long proto_cap = eth_proto_cap;
struct ptys2ethtool_config *table;
u32 max_size;
int proto;
mlx5e_ethtool_get_speed_arr(mdev, &table, &max_size);
table = ext ? ptys2ext_ethtool_table : ptys2legacy_ethtool_table;
max_size = ext ? ARRAY_SIZE(ptys2ext_ethtool_table) :
ARRAY_SIZE(ptys2legacy_ethtool_table);
for_each_set_bit(proto, &proto_cap, max_size)
bitmap_or(advertising_modes, advertising_modes,
table[proto].advertised,
@ -794,12 +796,12 @@ static void get_supported(struct mlx5_core_dev *mdev, u32 eth_proto_cap,
ethtool_link_ksettings_add_link_mode(link_ksettings, supported, Pause);
}
static void get_advertising(struct mlx5_core_dev *mdev, u32 eth_proto_cap,
u8 tx_pause, u8 rx_pause,
struct ethtool_link_ksettings *link_ksettings)
static void get_advertising(u32 eth_proto_cap, u8 tx_pause, u8 rx_pause,
struct ethtool_link_ksettings *link_ksettings,
bool ext)
{
unsigned long *advertising = link_ksettings->link_modes.advertising;
ptys2ethtool_adver_link(mdev, advertising, eth_proto_cap);
ptys2ethtool_adver_link(advertising, eth_proto_cap, ext);
if (rx_pause)
ethtool_link_ksettings_add_link_mode(link_ksettings, advertising, Pause);
@ -854,8 +856,9 @@ static void get_lp_advertising(struct mlx5_core_dev *mdev, u32 eth_proto_lp,
struct ethtool_link_ksettings *link_ksettings)
{
unsigned long *lp_advertising = link_ksettings->link_modes.lp_advertising;
bool ext = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
ptys2ethtool_adver_link(mdev, lp_advertising, eth_proto_lp);
ptys2ethtool_adver_link(lp_advertising, eth_proto_lp, ext);
}
int mlx5e_ethtool_get_link_ksettings(struct mlx5e_priv *priv,
@ -872,6 +875,7 @@ int mlx5e_ethtool_get_link_ksettings(struct mlx5e_priv *priv,
u8 an_disable_admin;
u8 an_status;
u8 connector_type;
bool admin_ext;
bool ext;
int err;
@ -886,6 +890,19 @@ int mlx5e_ethtool_get_link_ksettings(struct mlx5e_priv *priv,
eth_proto_capability);
eth_proto_admin = MLX5_GET_ETH_PROTO(ptys_reg, out, ext,
eth_proto_admin);
/* Fields: eth_proto_admin and ext_eth_proto_admin are
* mutually exclusive. Hence try reading legacy advertising
* when extended advertising is zero.
* admin_ext indicates how eth_proto_admin should be
* interpreted
*/
admin_ext = ext;
if (ext && !eth_proto_admin) {
eth_proto_admin = MLX5_GET_ETH_PROTO(ptys_reg, out, false,
eth_proto_admin);
admin_ext = false;
}
eth_proto_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext,
eth_proto_oper);
eth_proto_lp = MLX5_GET(ptys_reg, out, eth_proto_lp_advertise);
@ -899,7 +916,8 @@ int mlx5e_ethtool_get_link_ksettings(struct mlx5e_priv *priv,
ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
get_supported(mdev, eth_proto_cap, link_ksettings);
get_advertising(mdev, eth_proto_admin, tx_pause, rx_pause, link_ksettings);
get_advertising(eth_proto_admin, tx_pause, rx_pause, link_ksettings,
admin_ext);
get_speed_duplex(priv->netdev, eth_proto_oper, link_ksettings);
eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
@ -1001,16 +1019,13 @@ int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
MLX5E_PTYS_EXT ||
link_ksettings->link_modes.advertising[1]);
ext_supported = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
/*when ptys_extended_ethernet is set legacy link modes are deprecated */
if (ext_requested != ext_supported)
return -EPROTONOSUPPORT;
ext_requested &= ext_supported;
speed = link_ksettings->base.speed;
ethtool2ptys_adver_func = ext_requested ?
mlx5e_ethtool2ptys_ext_adver_link :
mlx5e_ethtool2ptys_adver_link;
err = mlx5_port_query_eth_proto(mdev, 1, ext_supported, &eproto);
err = mlx5_port_query_eth_proto(mdev, 1, ext_requested, &eproto);
if (err) {
netdev_err(priv->netdev, "%s: query port eth proto failed: %d\n",
__func__, err);
@ -1038,7 +1053,7 @@ int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
if (!an_changes && link_modes == eproto.admin)
goto out;
mlx5_port_set_eth_ptys(mdev, an_disable, link_modes, ext_supported);
mlx5_port_set_eth_ptys(mdev, an_disable, link_modes, ext_requested);
mlx5_toggle_port_link(mdev);
out: