From: Tom Rix <trix@redhat.com>
To: idosch@nvidia.com, petrm@nvidia.com, davem@davemloft.net,
kuba@kernel.org, pabeni@redhat.com
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Tom Rix <trix@redhat.com>
Subject: [PATCH] mlxsw: spectrum_router: simplify list unwinding
Date: Sat, 2 Apr 2022 08:15:16 -0400 [thread overview]
Message-ID: <20220402121516.2750284-1-trix@redhat.com> (raw)
The setting of i here
err_nexthop6_group_get:
i = nrt6;
Is redundant, i is already nrt6. So remove
this statement.
The for loop for the unwinding
err_rt6_create:
for (i--; i >= 0; i--) {
Is equivelent to
for (; i > 0; i--) {
Two consecutive labels can be reduced to one.
Signed-off-by: Tom Rix <trix@redhat.com>
---
.../ethernet/mellanox/mlxsw/spectrum_router.c | 20 ++++++++-----------
1 file changed, 8 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 79deb19e3a19..79fd486e29e3 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -7010,7 +7010,7 @@ mlxsw_sp_fib6_entry_nexthop_add(struct mlxsw_sp *mlxsw_sp,
mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt_arr[i]);
if (IS_ERR(mlxsw_sp_rt6)) {
err = PTR_ERR(mlxsw_sp_rt6);
- goto err_rt6_create;
+ goto err_rt6_unwind;
}
list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list);
@@ -7019,14 +7019,12 @@ mlxsw_sp_fib6_entry_nexthop_add(struct mlxsw_sp *mlxsw_sp,
err = mlxsw_sp_nexthop6_group_update(mlxsw_sp, op_ctx, fib6_entry);
if (err)
- goto err_nexthop6_group_update;
+ goto err_rt6_unwind;
return 0;
-err_nexthop6_group_update:
- i = nrt6;
-err_rt6_create:
- for (i--; i >= 0; i--) {
+err_rt6_unwind:
+ for (; i > 0; i--) {
fib6_entry->nrt6--;
mlxsw_sp_rt6 = list_last_entry(&fib6_entry->rt6_list,
struct mlxsw_sp_rt6, list);
@@ -7154,7 +7152,7 @@ mlxsw_sp_fib6_entry_create(struct mlxsw_sp *mlxsw_sp,
mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt_arr[i]);
if (IS_ERR(mlxsw_sp_rt6)) {
err = PTR_ERR(mlxsw_sp_rt6);
- goto err_rt6_create;
+ goto err_rt6_unwind;
}
list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list);
fib6_entry->nrt6++;
@@ -7162,7 +7160,7 @@ mlxsw_sp_fib6_entry_create(struct mlxsw_sp *mlxsw_sp,
err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry);
if (err)
- goto err_nexthop6_group_get;
+ goto err_rt6_unwind;
err = mlxsw_sp_nexthop_group_vr_link(fib_entry->nh_group,
fib_node->fib);
@@ -7181,10 +7179,8 @@ mlxsw_sp_fib6_entry_create(struct mlxsw_sp *mlxsw_sp,
mlxsw_sp_nexthop_group_vr_unlink(fib_entry->nh_group, fib_node->fib);
err_nexthop_group_vr_link:
mlxsw_sp_nexthop6_group_put(mlxsw_sp, fib_entry);
-err_nexthop6_group_get:
- i = nrt6;
-err_rt6_create:
- for (i--; i >= 0; i--) {
+err_rt6_unwind:
+ for (; i > 0; i--) {
fib6_entry->nrt6--;
mlxsw_sp_rt6 = list_last_entry(&fib6_entry->rt6_list,
struct mlxsw_sp_rt6, list);
--
2.27.0
next reply other threads:[~2022-04-02 12:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-02 12:15 Tom Rix [this message]
2022-04-03 13:10 ` [PATCH] mlxsw: spectrum_router: simplify list unwinding Ido Schimmel
2022-04-05 20:23 ` Jakub Kicinski
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