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net: switchdev: pass callback to dump operation

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Similar to the notifier_call callback of a notifier_block, change the
function signature of switchdev dump operation to:

    int switchdev_port_obj_dump(struct net_device *dev,
                                enum switchdev_obj_id id, void *obj,
                                int (*cb)(void *obj));

This allows the caller to pass and expect back a specific
switchdev_obj_* structure instead of the generic switchdev_obj one.

Drivers implementation of dump operation can now expect this specific
structure and call the callback with it. Drivers 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 12:07:16 -04:00 • committed by David S. Miller
parent 03d5fb1862
commit 25f07adc47
4 changed files with 53 additions and 48 deletions
Download patch file Download diff file Expand all files Collapse all files

45
net/switchdev/switchdev.c
View file

@ -386,9 +386,12 @@ EXPORT_SYMBOL_GPL(switchdev_port_obj_del);
* switchdev_port_obj_dump - Dump port objects
*
* @dev: port device
* @id: object ID
* @obj: object to dump
* @cb: function to call with a filled object
*/
int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj)
int switchdev_port_obj_dump(struct net_device *dev, enum switchdev_obj_id id,
void *obj, int (*cb)(void *obj))
{
const struct switchdev_ops *ops = dev->switchdev_ops;
struct net_device *lower_dev;
@ -396,7 +399,7 @@ int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj)
int err = -EOPNOTSUPP;
if (ops && ops->switchdev_port_obj_dump)
return ops->switchdev_port_obj_dump(dev, obj);
return ops->switchdev_port_obj_dump(dev, id, obj, cb);
/* Switch device port(s) may be stacked under
* bond/team/vlan dev, so recurse down to dump objects on
@ -404,7 +407,7 @@ int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj)
*/
netdev_for_each_lower_dev(dev, lower_dev, iter) {
err = switchdev_port_obj_dump(lower_dev, obj);
err = switchdev_port_obj_dump(lower_dev, id, obj, cb);
break;
}
@ -476,7 +479,7 @@ int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
EXPORT_SYMBOL_GPL(call_switchdev_notifiers);
struct switchdev_vlan_dump {
struct switchdev_obj obj;
struct switchdev_obj_vlan vlan;
struct sk_buff *skb;
u32 filter_mask;
u16 flags;
@ -514,11 +517,11 @@ static int switchdev_port_vlan_dump_put(struct switchdev_vlan_dump *dump)
return 0;
}
static int switchdev_port_vlan_dump_cb(struct switchdev_obj *obj)
static int switchdev_port_vlan_dump_cb(void *obj)
{
struct switchdev_obj_vlan *vlan = obj;
struct switchdev_vlan_dump *dump =
container_of(obj, struct switchdev_vlan_dump, obj);
struct switchdev_obj_vlan *vlan = &dump->obj.u.vlan;
container_of(vlan, struct switchdev_vlan_dump, vlan);
int err = 0;
if (vlan->vid_begin > vlan->vid_end)
@ -570,10 +573,6 @@ static int switchdev_port_vlan_fill(struct sk_buff *skb, struct net_device *dev,
u32 filter_mask)
{
struct switchdev_vlan_dump dump = {
.obj = {
.id = SWITCHDEV_OBJ_PORT_VLAN,
.cb = switchdev_port_vlan_dump_cb,
},
.skb = skb,
.filter_mask = filter_mask,
};
@ -581,7 +580,9 @@ static int switchdev_port_vlan_fill(struct sk_buff *skb, struct net_device *dev,
if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
err = switchdev_port_obj_dump(dev, &dump.obj);
err = switchdev_port_obj_dump(dev, SWITCHDEV_OBJ_PORT_VLAN,
&dump.vlan,
switchdev_port_vlan_dump_cb);
if (err)
goto err_out;
if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
@ -856,17 +857,18 @@ int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
EXPORT_SYMBOL_GPL(switchdev_port_fdb_del);
struct switchdev_fdb_dump {
struct switchdev_obj obj;
struct switchdev_obj_fdb fdb;
struct net_device *dev;
struct sk_buff *skb;
struct netlink_callback *cb;
int idx;
};
static int switchdev_port_fdb_dump_cb(struct switchdev_obj *obj)
static int switchdev_port_fdb_dump_cb(void *obj)
{
struct switchdev_obj_fdb *fdb = obj;
struct switchdev_fdb_dump *dump =
container_of(obj, struct switchdev_fdb_dump, obj);
container_of(fdb, struct switchdev_fdb_dump, fdb);
u32 portid = NETLINK_CB(dump->cb->skb).portid;
u32 seq = dump->cb->nlh->nlmsg_seq;
struct nlmsghdr *nlh;
@ -887,12 +889,12 @@ static int switchdev_port_fdb_dump_cb(struct switchdev_obj *obj)
ndm->ndm_flags = NTF_SELF;
ndm->ndm_type = 0;
ndm->ndm_ifindex = dump->dev->ifindex;
ndm->ndm_state = obj->u.fdb.ndm_state;
ndm->ndm_state = fdb->ndm_state;
if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, obj->u.fdb.addr))
if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, fdb->addr))
goto nla_put_failure;
if (obj->u.fdb.vid && nla_put_u16(dump->skb, NDA_VLAN, obj->u.fdb.vid))
if (fdb->vid && nla_put_u16(dump->skb, NDA_VLAN, fdb->vid))
goto nla_put_failure;
nlmsg_end(dump->skb, nlh);
@ -922,17 +924,14 @@ int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
struct net_device *filter_dev, int idx)
{
struct switchdev_fdb_dump dump = {
.obj = {
.id = SWITCHDEV_OBJ_PORT_FDB,
.cb = switchdev_port_fdb_dump_cb,
},
.dev = dev,
.skb = skb,
.cb = cb,
.idx = idx,
};
switchdev_port_obj_dump(dev, &dump.obj);
switchdev_port_obj_dump(dev, SWITCHDEV_OBJ_PORT_FDB, &dump.fdb,
switchdev_port_fdb_dump_cb);
return dump.idx;
}
EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump);