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mlxsw: spectrum_buffers: Allocate prs & pms dynamically 

Spectrum-2 will be configured with a different set of pools than
Spectrum-1. The size of prs and pms buffers will therefore depend on the
chip type of the device.

Therefore, instead of reserving an array directly in a structure
definition, allocate the buffer in mlxsw_sp_sb_port{,s}_init().

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2019-02-20 19:32:14 +00:00 committed by David S. Miller
parent c39f3e0e4f
commit 93d201f775
1 changed files with 50 additions and 2 deletions
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52
drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
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@ -63,11 +63,11 @@ static const struct mlxsw_sp_sb_pool_des mlxsw_sp_sb_pool_dess[] = {
struct mlxsw_sp_sb_port {
struct mlxsw_sp_sb_cm ing_cms[MLXSW_SP_SB_ING_TC_COUNT];
struct mlxsw_sp_sb_cm eg_cms[MLXSW_SP_SB_EG_TC_COUNT];
struct mlxsw_sp_sb_pm pms[MLXSW_SP_SB_POOL_DESS_LEN];
struct mlxsw_sp_sb_pm *pms;
};
struct mlxsw_sp_sb {
struct mlxsw_sp_sb_pr prs[MLXSW_SP_SB_POOL_DESS_LEN];
struct mlxsw_sp_sb_pr *prs;
struct mlxsw_sp_sb_port *ports;
u32 cell_size;
u64 sb_size;
@ -283,20 +283,68 @@ static int mlxsw_sp_port_headroom_init(struct mlxsw_sp_port *mlxsw_sp_port)
return mlxsw_sp_port_pb_prio_init(mlxsw_sp_port);
}
static int mlxsw_sp_sb_port_init(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_sb_port *sb_port)
{
struct mlxsw_sp_sb_pm *pms;
pms = kcalloc(MLXSW_SP_SB_POOL_DESS_LEN, sizeof(*pms), GFP_KERNEL);
if (!pms)
return -ENOMEM;
sb_port->pms = pms;
return 0;
}
static void mlxsw_sp_sb_port_fini(struct mlxsw_sp_sb_port *sb_port)
{
kfree(sb_port->pms);
}
static int mlxsw_sp_sb_ports_init(struct mlxsw_sp *mlxsw_sp)
{
unsigned int max_ports = mlxsw_core_max_ports(mlxsw_sp->core);
struct mlxsw_sp_sb_pr *prs;
int i;
int err;
mlxsw_sp->sb->ports = kcalloc(max_ports,
sizeof(struct mlxsw_sp_sb_port),
GFP_KERNEL);
if (!mlxsw_sp->sb->ports)
return -ENOMEM;
prs = kcalloc(MLXSW_SP_SB_POOL_DESS_LEN, sizeof(*prs), GFP_KERNEL);
if (!prs) {
err = -ENOMEM;
goto err_alloc_prs;
}
mlxsw_sp->sb->prs = prs;
for (i = 0; i < max_ports; i++) {
err = mlxsw_sp_sb_port_init(mlxsw_sp, &mlxsw_sp->sb->ports[i]);
if (err)
goto err_sb_port_init;
}
return 0;
err_sb_port_init:
for (i--; i >= 0; i--)
mlxsw_sp_sb_port_fini(&mlxsw_sp->sb->ports[i]);
kfree(mlxsw_sp->sb->prs);
err_alloc_prs:
kfree(mlxsw_sp->sb->ports);
return err;
}
static void mlxsw_sp_sb_ports_fini(struct mlxsw_sp *mlxsw_sp)
{
int max_ports = mlxsw_core_max_ports(mlxsw_sp->core);
int i;
for (i = max_ports - 1; i >= 0; i--)
mlxsw_sp_sb_port_fini(&mlxsw_sp->sb->ports[i]);
kfree(mlxsw_sp->sb->prs);
kfree(mlxsw_sp->sb->ports);
}