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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-06 02:50:43 +00:00
net/mlx5e: Fix matching of speed to PRM link modes
Speed translation is performed based on legacy or extended PTYS
register. Translate speed with respect to:
1) Capability bit of extended PTYS table.
2) User request:
a) When auto-negotiation is turned on, inspect advertisement whether it
contains extended link modes.
b) When auto-negotiation is turned off, speed > 100Gbps (maximal
speed supported in legacy mode).
With both conditions fulfilled translation is done with extended PTYS
table otherwise use legacy PTYS table.
Without this patch 25/50/100 Gbps speed cannot be set, since try to
configure in extended mode but read from legacy mode.
Fixes: dd1b9e09c1
("net/mlx5: ethtool, Allow legacy link-modes configuration via non-extended ptys")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
parent
694826e366
commit
4b95840a6c
3 changed files with 70 additions and 34 deletions
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@ -78,9 +78,10 @@ static const u32 mlx5e_ext_link_speed[MLX5E_EXT_LINK_MODES_NUMBER] = {
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};
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static void mlx5e_port_get_speed_arr(struct mlx5_core_dev *mdev,
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const u32 **arr, u32 *size)
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const u32 **arr, u32 *size,
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bool force_legacy)
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{
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bool ext = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
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bool ext = force_legacy ? false : MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
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*size = ext ? ARRAY_SIZE(mlx5e_ext_link_speed) :
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ARRAY_SIZE(mlx5e_link_speed);
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@ -152,7 +153,8 @@ int mlx5_port_set_eth_ptys(struct mlx5_core_dev *dev, bool an_disable,
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sizeof(out), MLX5_REG_PTYS, 0, 1);
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}
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u32 mlx5e_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper)
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u32 mlx5e_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper,
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bool force_legacy)
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{
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unsigned long temp = eth_proto_oper;
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const u32 *table;
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@ -160,7 +162,7 @@ u32 mlx5e_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper)
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u32 max_size;
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int i;
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mlx5e_port_get_speed_arr(mdev, &table, &max_size);
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mlx5e_port_get_speed_arr(mdev, &table, &max_size, force_legacy);
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i = find_first_bit(&temp, max_size);
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if (i < max_size)
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speed = table[i];
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@ -170,6 +172,7 @@ u32 mlx5e_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper)
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int mlx5e_port_linkspeed(struct mlx5_core_dev *mdev, u32 *speed)
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{
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struct mlx5e_port_eth_proto eproto;
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bool force_legacy = false;
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bool ext;
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int err;
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@ -177,8 +180,13 @@ int mlx5e_port_linkspeed(struct mlx5_core_dev *mdev, u32 *speed)
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err = mlx5_port_query_eth_proto(mdev, 1, ext, &eproto);
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if (err)
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goto out;
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*speed = mlx5e_port_ptys2speed(mdev, eproto.oper);
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if (ext && !eproto.admin) {
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force_legacy = true;
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err = mlx5_port_query_eth_proto(mdev, 1, false, &eproto);
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if (err)
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goto out;
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}
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*speed = mlx5e_port_ptys2speed(mdev, eproto.oper, force_legacy);
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if (!(*speed))
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err = -EINVAL;
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@ -201,7 +209,7 @@ int mlx5e_port_max_linkspeed(struct mlx5_core_dev *mdev, u32 *speed)
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if (err)
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return err;
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mlx5e_port_get_speed_arr(mdev, &table, &max_size);
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mlx5e_port_get_speed_arr(mdev, &table, &max_size, false);
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for (i = 0; i < max_size; ++i)
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if (eproto.cap & MLX5E_PROT_MASK(i))
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max_speed = max(max_speed, table[i]);
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@ -210,14 +218,15 @@ int mlx5e_port_max_linkspeed(struct mlx5_core_dev *mdev, u32 *speed)
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return 0;
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}
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u32 mlx5e_port_speed2linkmodes(struct mlx5_core_dev *mdev, u32 speed)
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u32 mlx5e_port_speed2linkmodes(struct mlx5_core_dev *mdev, u32 speed,
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bool force_legacy)
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{
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u32 link_modes = 0;
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const u32 *table;
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u32 max_size;
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int i;
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mlx5e_port_get_speed_arr(mdev, &table, &max_size);
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mlx5e_port_get_speed_arr(mdev, &table, &max_size, force_legacy);
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for (i = 0; i < max_size; ++i) {
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if (table[i] == speed)
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link_modes |= MLX5E_PROT_MASK(i);
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@ -48,10 +48,12 @@ void mlx5_port_query_eth_autoneg(struct mlx5_core_dev *dev, u8 *an_status,
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u8 *an_disable_cap, u8 *an_disable_admin);
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int mlx5_port_set_eth_ptys(struct mlx5_core_dev *dev, bool an_disable,
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u32 proto_admin, bool ext);
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u32 mlx5e_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper);
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u32 mlx5e_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper,
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bool force_legacy);
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int mlx5e_port_linkspeed(struct mlx5_core_dev *mdev, u32 *speed);
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int mlx5e_port_max_linkspeed(struct mlx5_core_dev *mdev, u32 *speed);
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u32 mlx5e_port_speed2linkmodes(struct mlx5_core_dev *mdev, u32 speed);
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u32 mlx5e_port_speed2linkmodes(struct mlx5_core_dev *mdev, u32 speed,
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bool force_legacy);
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int mlx5e_port_query_pbmc(struct mlx5_core_dev *mdev, void *out);
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int mlx5e_port_set_pbmc(struct mlx5_core_dev *mdev, void *in);
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@ -785,7 +785,7 @@ static void ptys2ethtool_supported_advertised_port(struct ethtool_link_ksettings
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}
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static void get_speed_duplex(struct net_device *netdev,
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u32 eth_proto_oper,
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u32 eth_proto_oper, bool force_legacy,
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struct ethtool_link_ksettings *link_ksettings)
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{
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struct mlx5e_priv *priv = netdev_priv(netdev);
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@ -795,7 +795,7 @@ static void get_speed_duplex(struct net_device *netdev,
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if (!netif_carrier_ok(netdev))
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goto out;
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speed = mlx5e_port_ptys2speed(priv->mdev, eth_proto_oper);
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speed = mlx5e_port_ptys2speed(priv->mdev, eth_proto_oper, force_legacy);
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if (!speed) {
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speed = SPEED_UNKNOWN;
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goto out;
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@ -914,8 +914,8 @@ int mlx5e_ethtool_get_link_ksettings(struct mlx5e_priv *priv,
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/* Fields: eth_proto_admin and ext_eth_proto_admin are
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* mutually exclusive. Hence try reading legacy advertising
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* when extended advertising is zero.
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* admin_ext indicates how eth_proto_admin should be
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* interpreted
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* admin_ext indicates which proto_admin (ext vs. legacy)
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* should be read and interpreted
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*/
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admin_ext = ext;
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if (ext && !eth_proto_admin) {
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@ -924,7 +924,7 @@ int mlx5e_ethtool_get_link_ksettings(struct mlx5e_priv *priv,
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admin_ext = false;
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}
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eth_proto_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext,
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eth_proto_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, admin_ext,
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eth_proto_oper);
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eth_proto_lp = MLX5_GET(ptys_reg, out, eth_proto_lp_advertise);
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an_disable_admin = MLX5_GET(ptys_reg, out, an_disable_admin);
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@ -939,7 +939,8 @@ int mlx5e_ethtool_get_link_ksettings(struct mlx5e_priv *priv,
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get_supported(mdev, eth_proto_cap, link_ksettings);
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get_advertising(eth_proto_admin, tx_pause, rx_pause, link_ksettings,
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admin_ext);
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get_speed_duplex(priv->netdev, eth_proto_oper, link_ksettings);
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get_speed_duplex(priv->netdev, eth_proto_oper, !admin_ext,
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link_ksettings);
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eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
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@ -1016,45 +1017,69 @@ static u32 mlx5e_ethtool2ptys_ext_adver_link(const unsigned long *link_modes)
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return ptys_modes;
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}
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static bool ext_link_mode_requested(const unsigned long *adver)
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{
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#define MLX5E_MIN_PTYS_EXT_LINK_MODE_BIT ETHTOOL_LINK_MODE_50000baseKR_Full_BIT
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int size = __ETHTOOL_LINK_MODE_MASK_NBITS - MLX5E_MIN_PTYS_EXT_LINK_MODE_BIT;
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__ETHTOOL_DECLARE_LINK_MODE_MASK(modes);
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bitmap_set(modes, MLX5E_MIN_PTYS_EXT_LINK_MODE_BIT, size);
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return bitmap_intersects(modes, adver, __ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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static bool ext_speed_requested(u32 speed)
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{
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#define MLX5E_MAX_PTYS_LEGACY_SPEED 100000
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return !!(speed > MLX5E_MAX_PTYS_LEGACY_SPEED);
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}
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static bool ext_requested(u8 autoneg, const unsigned long *adver, u32 speed)
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{
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bool ext_link_mode = ext_link_mode_requested(adver);
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bool ext_speed = ext_speed_requested(speed);
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return autoneg == AUTONEG_ENABLE ? ext_link_mode : ext_speed;
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}
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int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
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const struct ethtool_link_ksettings *link_ksettings)
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{
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struct mlx5_core_dev *mdev = priv->mdev;
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struct mlx5e_port_eth_proto eproto;
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const unsigned long *adver;
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bool an_changes = false;
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u8 an_disable_admin;
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bool ext_supported;
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bool ext_requested;
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u8 an_disable_cap;
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bool an_disable;
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u32 link_modes;
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u8 an_status;
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u8 autoneg;
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u32 speed;
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bool ext;
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int err;
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u32 (*ethtool2ptys_adver_func)(const unsigned long *adver);
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#define MLX5E_PTYS_EXT ((1ULL << ETHTOOL_LINK_MODE_50000baseKR_Full_BIT) - 1)
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ext_requested = !!(link_ksettings->link_modes.advertising[0] >
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MLX5E_PTYS_EXT ||
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link_ksettings->link_modes.advertising[1]);
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ext_supported = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
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ext_requested &= ext_supported;
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adver = link_ksettings->link_modes.advertising;
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autoneg = link_ksettings->base.autoneg;
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speed = link_ksettings->base.speed;
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ethtool2ptys_adver_func = ext_requested ?
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mlx5e_ethtool2ptys_ext_adver_link :
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ext = ext_requested(autoneg, adver, speed),
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ext_supported = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
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if (!ext_supported && ext)
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return -EOPNOTSUPP;
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ethtool2ptys_adver_func = ext ? mlx5e_ethtool2ptys_ext_adver_link :
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mlx5e_ethtool2ptys_adver_link;
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err = mlx5_port_query_eth_proto(mdev, 1, ext_requested, &eproto);
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err = mlx5_port_query_eth_proto(mdev, 1, ext, &eproto);
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if (err) {
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netdev_err(priv->netdev, "%s: query port eth proto failed: %d\n",
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__func__, err);
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goto out;
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}
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link_modes = link_ksettings->base.autoneg == AUTONEG_ENABLE ?
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ethtool2ptys_adver_func(link_ksettings->link_modes.advertising) :
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mlx5e_port_speed2linkmodes(mdev, speed);
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link_modes = autoneg == AUTONEG_ENABLE ? ethtool2ptys_adver_func(adver) :
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mlx5e_port_speed2linkmodes(mdev, speed, !ext);
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link_modes = link_modes & eproto.cap;
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if (!link_modes) {
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@ -1067,14 +1092,14 @@ int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
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mlx5_port_query_eth_autoneg(mdev, &an_status, &an_disable_cap,
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&an_disable_admin);
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an_disable = link_ksettings->base.autoneg == AUTONEG_DISABLE;
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an_disable = autoneg == AUTONEG_DISABLE;
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an_changes = ((!an_disable && an_disable_admin) ||
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(an_disable && !an_disable_admin));
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if (!an_changes && link_modes == eproto.admin)
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goto out;
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mlx5_port_set_eth_ptys(mdev, an_disable, link_modes, ext_requested);
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mlx5_port_set_eth_ptys(mdev, an_disable, link_modes, ext);
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mlx5_toggle_port_link(mdev);
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out:
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