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net: switchdev: abstract object in add/del ops

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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>
This commit is contained in:
Vivien Didelot
2015-09-29 12:07:17 -04:00
committed by David S. Miller
parent 25f07adc47
commit ab06900230
6 changed files with 99 additions and 117 deletions
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122
net/switchdev/switchdev.c
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@@ -270,7 +270,7 @@ int switchdev_port_attr_set(struct net_device *dev, struct switchdev_attr *attr)
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 @@ static int __switchdev_port_obj_add(struct net_device *dev,
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 @@ static int __switchdev_port_obj_add(struct net_device *dev,
*/
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 @@ static int __switchdev_port_obj_add(struct net_device *dev,
* 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 @@ static int __switchdev_port_obj_add(struct net_device *dev,
*
* 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 @@ int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj)
*/
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 @@ int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj)
*/
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 @@ EXPORT_SYMBOL_GPL(switchdev_port_obj_add);
* 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 switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj)
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 @@ int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj)
*/
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_setlink_protinfo(struct net_device *dev,
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 @@ static int switchdev_port_br_afspec(struct net_device *dev,
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 @@ int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
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 @@ int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
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 @@ static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi)
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 @@ int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
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 @@ EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_add);
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 @@ int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
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;