"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@xxxxxxxxxx>
---
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(-)
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,
--
2.45.2
