net: switchdev: abstract object in add/del ops
Similar to the notifier_call callback of a notifier_block, change the
function signature of switchdev add and del operations to:
int switchdev_port_obj_add/del(struct net_device *dev,
enum switchdev_obj_id id, void *obj);
This allows the caller to pass a specific switchdev_obj_* structure
instead of the generic switchdev_obj one.
Drivers implementation of these operations and switchdev have been
changed accordingly.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 2ef863c..fe82fab 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -270,7 +270,7 @@
EXPORT_SYMBOL_GPL(switchdev_port_attr_set);
static int __switchdev_port_obj_add(struct net_device *dev,
- struct switchdev_obj *obj,
+ enum switchdev_obj_id id, const void *obj,
struct switchdev_trans *trans)
{
const struct switchdev_ops *ops = dev->switchdev_ops;
@@ -279,7 +279,7 @@
int err = -EOPNOTSUPP;
if (ops && ops->switchdev_port_obj_add)
- return ops->switchdev_port_obj_add(dev, obj, trans);
+ return ops->switchdev_port_obj_add(dev, id, obj, trans);
/* Switch device port(s) may be stacked under
* bond/team/vlan dev, so recurse down to add object on
@@ -287,7 +287,7 @@
*/
netdev_for_each_lower_dev(dev, lower_dev, iter) {
- err = __switchdev_port_obj_add(lower_dev, obj, trans);
+ err = __switchdev_port_obj_add(lower_dev, id, obj, trans);
if (err)
break;
}
@@ -299,6 +299,7 @@
* switchdev_port_obj_add - Add port object
*
* @dev: port device
+ * @id: object ID
* @obj: object to add
*
* Use a 2-phase prepare-commit transaction model to ensure
@@ -307,7 +308,8 @@
*
* rtnl_lock must be held.
*/
-int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj)
+int switchdev_port_obj_add(struct net_device *dev, enum switchdev_obj_id id,
+ const void *obj)
{
struct switchdev_trans trans;
int err;
@@ -324,7 +326,7 @@
*/
trans.ph_prepare = true;
- err = __switchdev_port_obj_add(dev, obj, &trans);
+ err = __switchdev_port_obj_add(dev, id, obj, &trans);
if (err) {
/* Prepare phase failed: abort the transaction. Any
* resources reserved in the prepare phase are
@@ -343,8 +345,8 @@
*/
trans.ph_prepare = false;
- err = __switchdev_port_obj_add(dev, obj, &trans);
- WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id);
+ err = __switchdev_port_obj_add(dev, id, obj, &trans);
+ WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, id);
switchdev_trans_items_warn_destroy(dev, &trans);
return err;
@@ -355,9 +357,11 @@
* switchdev_port_obj_del - Delete port object
*
* @dev: port device
+ * @id: object ID
* @obj: object to delete
*/
-int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj)
+int switchdev_port_obj_del(struct net_device *dev, enum switchdev_obj_id id,
+ const void *obj)
{
const struct switchdev_ops *ops = dev->switchdev_ops;
struct net_device *lower_dev;
@@ -365,7 +369,7 @@
int err = -EOPNOTSUPP;
if (ops && ops->switchdev_port_obj_del)
- return ops->switchdev_port_obj_del(dev, obj);
+ return ops->switchdev_port_obj_del(dev, id, obj);
/* Switch device port(s) may be stacked under
* bond/team/vlan dev, so recurse down to delete object on
@@ -373,7 +377,7 @@
*/
netdev_for_each_lower_dev(dev, lower_dev, iter) {
- err = switchdev_port_obj_del(lower_dev, obj);
+ err = switchdev_port_obj_del(lower_dev, id, obj);
if (err)
break;
}
@@ -695,14 +699,12 @@
static int switchdev_port_br_afspec(struct net_device *dev,
struct nlattr *afspec,
int (*f)(struct net_device *dev,
- struct switchdev_obj *obj))
+ enum switchdev_obj_id id,
+ const void *obj))
{
struct nlattr *attr;
struct bridge_vlan_info *vinfo;
- struct switchdev_obj obj = {
- .id = SWITCHDEV_OBJ_PORT_VLAN,
- };
- struct switchdev_obj_vlan *vlan = &obj.u.vlan;
+ struct switchdev_obj_vlan vlan = { 0 };
int rem;
int err;
@@ -712,30 +714,30 @@
if (nla_len(attr) != sizeof(struct bridge_vlan_info))
return -EINVAL;
vinfo = nla_data(attr);
- vlan->flags = vinfo->flags;
+ vlan.flags = vinfo->flags;
if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
- if (vlan->vid_begin)
+ if (vlan.vid_begin)
return -EINVAL;
- vlan->vid_begin = vinfo->vid;
+ vlan.vid_begin = vinfo->vid;
} else if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) {
- if (!vlan->vid_begin)
+ if (!vlan.vid_begin)
return -EINVAL;
- vlan->vid_end = vinfo->vid;
- if (vlan->vid_end <= vlan->vid_begin)
+ vlan.vid_end = vinfo->vid;
+ if (vlan.vid_end <= vlan.vid_begin)
return -EINVAL;
- err = f(dev, &obj);
+ err = f(dev, SWITCHDEV_OBJ_PORT_VLAN, &vlan);
if (err)
return err;
- memset(vlan, 0, sizeof(*vlan));
+ memset(&vlan, 0, sizeof(vlan));
} else {
- if (vlan->vid_begin)
+ if (vlan.vid_begin)
return -EINVAL;
- vlan->vid_begin = vinfo->vid;
- vlan->vid_end = vinfo->vid;
- err = f(dev, &obj);
+ vlan.vid_begin = vinfo->vid;
+ vlan.vid_end = vinfo->vid;
+ err = f(dev, SWITCHDEV_OBJ_PORT_VLAN, &vlan);
if (err)
return err;
- memset(vlan, 0, sizeof(*vlan));
+ memset(&vlan, 0, sizeof(vlan));
}
}
@@ -817,15 +819,12 @@
struct net_device *dev, const unsigned char *addr,
u16 vid, u16 nlm_flags)
{
- struct switchdev_obj obj = {
- .id = SWITCHDEV_OBJ_PORT_FDB,
- .u.fdb = {
- .addr = addr,
- .vid = vid,
- },
+ struct switchdev_obj_fdb fdb = {
+ .addr = addr,
+ .vid = vid,
};
- return switchdev_port_obj_add(dev, &obj);
+ return switchdev_port_obj_add(dev, SWITCHDEV_OBJ_PORT_FDB, &fdb);
}
EXPORT_SYMBOL_GPL(switchdev_port_fdb_add);
@@ -844,15 +843,12 @@
struct net_device *dev, const unsigned char *addr,
u16 vid)
{
- struct switchdev_obj obj = {
- .id = SWITCHDEV_OBJ_PORT_FDB,
- .u.fdb = {
- .addr = addr,
- .vid = vid,
- },
+ struct switchdev_obj_fdb fdb = {
+ .addr = addr,
+ .vid = vid,
};
- return switchdev_port_obj_del(dev, &obj);
+ return switchdev_port_obj_del(dev, SWITCHDEV_OBJ_PORT_FDB, &fdb);
}
EXPORT_SYMBOL_GPL(switchdev_port_fdb_del);
@@ -1009,17 +1005,14 @@
int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
u8 tos, u8 type, u32 nlflags, u32 tb_id)
{
- struct switchdev_obj fib_obj = {
- .id = SWITCHDEV_OBJ_IPV4_FIB,
- .u.ipv4_fib = {
- .dst = dst,
- .dst_len = dst_len,
- .fi = fi,
- .tos = tos,
- .type = type,
- .nlflags = nlflags,
- .tb_id = tb_id,
- },
+ struct switchdev_obj_ipv4_fib ipv4_fib = {
+ .dst = dst,
+ .dst_len = dst_len,
+ .fi = fi,
+ .tos = tos,
+ .type = type,
+ .nlflags = nlflags,
+ .tb_id = tb_id,
};
struct net_device *dev;
int err = 0;
@@ -1040,7 +1033,7 @@
if (!dev)
return 0;
- err = switchdev_port_obj_add(dev, &fib_obj);
+ err = switchdev_port_obj_add(dev, SWITCHDEV_OBJ_IPV4_FIB, &ipv4_fib);
if (!err)
fi->fib_flags |= RTNH_F_OFFLOAD;
@@ -1063,17 +1056,14 @@
int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
u8 tos, u8 type, u32 tb_id)
{
- struct switchdev_obj fib_obj = {
- .id = SWITCHDEV_OBJ_IPV4_FIB,
- .u.ipv4_fib = {
- .dst = dst,
- .dst_len = dst_len,
- .fi = fi,
- .tos = tos,
- .type = type,
- .nlflags = 0,
- .tb_id = tb_id,
- },
+ struct switchdev_obj_ipv4_fib ipv4_fib = {
+ .dst = dst,
+ .dst_len = dst_len,
+ .fi = fi,
+ .tos = tos,
+ .type = type,
+ .nlflags = 0,
+ .tb_id = tb_id,
};
struct net_device *dev;
int err = 0;
@@ -1085,7 +1075,7 @@
if (!dev)
return 0;
- err = switchdev_port_obj_del(dev, &fib_obj);
+ err = switchdev_port_obj_del(dev, SWITCHDEV_OBJ_IPV4_FIB, &ipv4_fib);
if (!err)
fi->fib_flags &= ~RTNH_F_OFFLOAD;