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mlxsw: spectrum_router: Do not query MAX_VRS on each iteration

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MLXSW_CORE_RES_GET involves a call to spectrum_core, a separate module.
Instead of making the call on every iteration, cache it up front, and use
the value.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2023-06-02 18:20:08 +02:00 committed by David S. Miller
parent 3903249ee1
commit 75426cc0b3
1 changed files with 8 additions and 4 deletions
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12
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
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@ -748,10 +748,11 @@ static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr)
static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp)
{
int max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS);
struct mlxsw_sp_vr *vr;
int i;
for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
for (i = 0; i < max_vrs; i++) {
vr = &mlxsw_sp->router->vrs[i];
if (!mlxsw_sp_vr_is_used(vr))
return vr;
@ -792,12 +793,13 @@ static u32 mlxsw_sp_fix_tb_id(u32 tb_id)
static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp,
u32 tb_id)
{
int max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS);
struct mlxsw_sp_vr *vr;
int i;
tb_id = mlxsw_sp_fix_tb_id(tb_id);
for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
for (i = 0; i < max_vrs; i++) {
vr = &mlxsw_sp->router->vrs[i];
if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id)
return vr;
@ -959,6 +961,7 @@ static int mlxsw_sp_vrs_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_fib *fib,
struct mlxsw_sp_lpm_tree *new_tree)
{
int max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS);
enum mlxsw_sp_l3proto proto = fib->proto;
struct mlxsw_sp_lpm_tree *old_tree;
u8 old_id, new_id = new_tree->id;
@ -968,7 +971,7 @@ static int mlxsw_sp_vrs_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp,
old_tree = mlxsw_sp->router->lpm.proto_trees[proto];
old_id = old_tree->id;
for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
for (i = 0; i < max_vrs; i++) {
vr = &mlxsw_sp->router->vrs[i];
if (!mlxsw_sp_vr_lpm_tree_should_replace(vr, proto, old_id))
continue;
@ -7298,9 +7301,10 @@ static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp,
static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp)
{
int max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS);
int i, j;
for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
for (i = 0; i < max_vrs; i++) {
struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i];
if (!mlxsw_sp_vr_is_used(vr))