diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/port.c | 59 |
1 files changed, 37 insertions, 22 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c index a7b0cdcb358a..57a10575a7aa 100644 --- a/drivers/net/ethernet/mellanox/mlx4/port.c +++ b/drivers/net/ethernet/mellanox/mlx4/port.c @@ -52,6 +52,7 @@ #define MLX4_FLAG2_V_IGNORE_FCS_MASK BIT(1) #define MLX4_FLAG2_V_USER_MTU_MASK BIT(5) +#define MLX4_FLAG_V_MTU_MASK BIT(0) #define MLX4_IGNORE_FCS_MASK 0x1 #define MLX4_TC_MAX_NUMBER 8 @@ -1241,6 +1242,38 @@ void mlx4_reset_roce_gids(struct mlx4_dev *dev, int slave) } static void +mlx4_en_set_port_mtu(struct mlx4_dev *dev, int slave, int port, + struct mlx4_set_port_general_context *gen_context) +{ + struct mlx4_priv *priv = mlx4_priv(dev); + struct mlx4_mfunc_master_ctx *master = &priv->mfunc.master; + struct mlx4_slave_state *slave_st = &master->slave_state[slave]; + u16 mtu, prev_mtu; + + /* Mtu is configured as the max USER_MTU among all + * the functions on the port. + */ + mtu = be16_to_cpu(gen_context->mtu); + mtu = min_t(int, mtu, dev->caps.eth_mtu_cap[port] + + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN); + prev_mtu = slave_st->mtu[port]; + slave_st->mtu[port] = mtu; + if (mtu > master->max_mtu[port]) + master->max_mtu[port] = mtu; + if (mtu < prev_mtu && prev_mtu == master->max_mtu[port]) { + int i; + + slave_st->mtu[port] = mtu; + master->max_mtu[port] = mtu; + for (i = 0; i < dev->num_slaves; i++) + master->max_mtu[port] = + max_t(u16, master->max_mtu[port], + master->slave_state[i].mtu[port]); + } + gen_context->mtu = cpu_to_be16(master->max_mtu[port]); +} + +static void mlx4_en_set_port_user_mtu(struct mlx4_dev *dev, int slave, int port, struct mlx4_set_port_general_context *gen_context) { @@ -1278,7 +1311,6 @@ static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod, struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_port_info *port_info; struct mlx4_mfunc_master_ctx *master = &priv->mfunc.master; - struct mlx4_slave_state *slave_st = &master->slave_state[slave]; struct mlx4_set_port_rqp_calc_context *qpn_context; struct mlx4_set_port_general_context *gen_context; struct mlx4_roce_gid_entry *gid_entry_tbl, *gid_entry_mbox, *gid_entry_mb1; @@ -1289,7 +1321,6 @@ static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod, int base; u32 in_modifier; u32 promisc; - u16 mtu, prev_mtu; int err; int i, j; int offset; @@ -1332,26 +1363,10 @@ static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod, break; case MLX4_SET_PORT_GENERAL: gen_context = inbox->buf; - /* Mtu is configured as the max MTU among all the - * the functions on the port. */ - mtu = be16_to_cpu(gen_context->mtu); - mtu = min_t(int, mtu, dev->caps.eth_mtu_cap[port] + - ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN); - prev_mtu = slave_st->mtu[port]; - slave_st->mtu[port] = mtu; - if (mtu > master->max_mtu[port]) - master->max_mtu[port] = mtu; - if (mtu < prev_mtu && prev_mtu == - master->max_mtu[port]) { - slave_st->mtu[port] = mtu; - master->max_mtu[port] = mtu; - for (i = 0; i < dev->num_slaves; i++) { - master->max_mtu[port] = - max(master->max_mtu[port], - master->slave_state[i].mtu[port]); - } - } - gen_context->mtu = cpu_to_be16(master->max_mtu[port]); + + if (gen_context->flags & MLX4_FLAG_V_MTU_MASK) + mlx4_en_set_port_mtu(dev, slave, port, + gen_context); if (gen_context->flags2 & MLX4_FLAG2_V_USER_MTU_MASK) mlx4_en_set_port_user_mtu(dev, slave, port, |