| Message ID | d8e76094d2e98ebb5bfc8205799b3a9db0b46220.1718524644.git.christophe.jaillet@wanadoo.fr (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [net-next] net: microchip: Constify struct vcap_operations | expand |
> "struct vcap_operations" are not modified in these drivers. > > Constifying this structure moves some data to a read-only section, so > increase overall security. > > In order to do it, "struct vcap_control" also needs to be adjusted to this > new const qualifier. > > As an example, on a x86_64, with allmodconfig: > Before: > ====== > text data bss dec hex filename > 15176 1094 16 16286 3f9e drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.o > > After: > ===== > text data bss dec hex filename > 15268 998 16 16282 3f9a drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.o > > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> > --- > I hope this can be applied as a single patch. > I think it can be split between lan966x, sparx5 and vcap if really needed. > --- LGTM. Reviewed-by: Daniel Machon <daniel.machon@microchip.com>
Hello: This patch was applied to netdev/net-next.git (main) by Paolo Abeni <pabeni@redhat.com>: On Sun, 16 Jun 2024 09:57:56 +0200 you wrote: > "struct vcap_operations" are not modified in these drivers. > > Constifying this structure moves some data to a read-only section, so > increase overall security. > > In order to do it, "struct vcap_control" also needs to be adjusted to this > new const qualifier. > > [...] Here is the summary with links: - [net-next] net: microchip: Constify struct vcap_operations https://git.kernel.org/netdev/net-next/c/8c379e3ce404 You are awesome, thank you!
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c b/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c index a4414f63c9b1..a1471e38d118 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c @@ -581,7 +581,7 @@ static void lan966x_vcap_move(struct net_device *dev, lan966x_vcap_wait_update(lan966x, admin->tgt_inst); } -static struct vcap_operations lan966x_vcap_ops = { +static const struct vcap_operations lan966x_vcap_ops = { .validate_keyset = lan966x_vcap_validate_keyset, .add_default_fields = lan966x_vcap_add_default_fields, .cache_erase = lan966x_vcap_cache_erase, diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c index 187efa1fc904..967c8621c250 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c @@ -1507,7 +1507,7 @@ static void sparx5_vcap_move(struct net_device *ndev, struct vcap_admin *admin, } } -static struct vcap_operations sparx5_vcap_ops = { +static const struct vcap_operations sparx5_vcap_ops = { .validate_keyset = sparx5_vcap_validate_keyset, .add_default_fields = sparx5_vcap_add_default_fields, .cache_erase = sparx5_vcap_cache_erase, diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api.h b/drivers/net/ethernet/microchip/vcap/vcap_api.h index 9eccfa633c1a..6069ad95c27e 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api.h +++ b/drivers/net/ethernet/microchip/vcap/vcap_api.h @@ -271,7 +271,7 @@ struct vcap_operations { /* VCAP API Client control interface */ struct vcap_control { - struct vcap_operations *ops; /* client supplied operations */ + const struct vcap_operations *ops; /* client supplied operations */ const struct vcap_info *vcaps; /* client supplied vcap models */ const struct vcap_statistics *stats; /* client supplied vcap stats */ struct list_head list; /* list of vcap instances */ diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_debugfs_kunit.c b/drivers/net/ethernet/microchip/vcap/vcap_api_debugfs_kunit.c index b23c11b0647c..9c9d38042125 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api_debugfs_kunit.c +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_debugfs_kunit.c @@ -221,7 +221,7 @@ static int vcap_test_port_info(struct net_device *ndev, return 0; } -static struct vcap_operations test_callbacks = { +static const struct vcap_operations test_callbacks = { .validate_keyset = test_val_keyset, .add_default_fields = test_add_def_fields, .cache_erase = test_cache_erase, diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c b/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c index fe4e166de8a0..51d9423b08a6 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c @@ -211,7 +211,7 @@ static int vcap_test_port_info(struct net_device *ndev, return 0; } -static struct vcap_operations test_callbacks = { +static const struct vcap_operations test_callbacks = { .validate_keyset = test_val_keyset, .add_default_fields = test_add_def_fields, .cache_erase = test_cache_erase,
"struct vcap_operations" are not modified in these drivers. Constifying this structure moves some data to a read-only section, so increase overall security. In order to do it, "struct vcap_control" also needs to be adjusted to this new const qualifier. As an example, on a x86_64, with allmodconfig: Before: ====== text data bss dec hex filename 15176 1094 16 16286 3f9e drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.o After: ===== text data bss dec hex filename 15268 998 16 16282 3f9a drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.o Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- I hope this can be applied as a single patch. I think it can be split between lan966x, sparx5 and vcap if really needed. --- drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c | 2 +- drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c | 2 +- drivers/net/ethernet/microchip/vcap/vcap_api.h | 2 +- drivers/net/ethernet/microchip/vcap/vcap_api_debugfs_kunit.c | 2 +- drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c | 2 +- 5 files changed, 5 insertions(+), 5 deletions(-)