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net: dsa: add FDB notifier 

Add two new DSA_NOTIFIER_FDB_ADD and DSA_NOTIFIER_FDB_DEL events to
notify not only a single switch, but all switches of a the fabric when
an FDB entry is added or removed.

For the moment, keep the current behavior and ignore other switches.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-05-19 17:00:53 -04:00 committed by David S. Miller
parent 1faabf7440
commit 685fb6a40d
3 changed files with 66 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
net/dsa/dsa_priv.h
View File

@ -20,6 +20,8 @@ enum {
DSA_NOTIFIER_AGEING_TIME,
DSA_NOTIFIER_BRIDGE_JOIN,
DSA_NOTIFIER_BRIDGE_LEAVE,
DSA_NOTIFIER_FDB_ADD,
DSA_NOTIFIER_FDB_DEL,
};
/* DSA_NOTIFIER_AGEING_TIME */
@ -36,6 +38,14 @@ struct dsa_notifier_bridge_info {
int port;
};
/* DSA_NOTIFIER_FDB_* */
struct dsa_notifier_fdb_info {
const struct switchdev_obj_port_fdb *fdb;
struct switchdev_trans *trans;
int sw_index;
int port;
};
struct dsa_device_ops {
struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,

29
net/dsa/port.c
View File

@ -151,29 +151,26 @@ int dsa_port_fdb_add(struct dsa_port *dp,
const struct switchdev_obj_port_fdb *fdb,
struct switchdev_trans *trans)
{
struct dsa_switch *ds = dp->ds;
struct dsa_notifier_fdb_info info = {
.sw_index = dp->ds->index,
.port = dp->index,
.trans = trans,
.fdb = fdb,
};
if (switchdev_trans_ph_prepare(trans)) {
if (!ds->ops->port_fdb_prepare || !ds->ops->port_fdb_add)
return -EOPNOTSUPP;
return ds->ops->port_fdb_prepare(ds, dp->index, fdb, trans);
}
ds->ops->port_fdb_add(ds, dp->index, fdb, trans);
return 0;
return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info);
}
int dsa_port_fdb_del(struct dsa_port *dp,
const struct switchdev_obj_port_fdb *fdb)
{
struct dsa_switch *ds = dp->ds;
struct dsa_notifier_fdb_info info = {
.sw_index = dp->ds->index,
.port = dp->index,
.fdb = fdb,
};
if (ds->ops->port_fdb_del)
return -EOPNOTSUPP;
return ds->ops->port_fdb_del(ds, dp->index, fdb);
return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info);
}
int dsa_port_fdb_dump(struct dsa_port *dp, struct switchdev_obj_port_fdb *fdb,

43
net/dsa/switch.c
View File

@ -84,6 +84,43 @@ static int dsa_switch_bridge_leave(struct dsa_switch *ds,
return 0;
}
static int dsa_switch_fdb_add(struct dsa_switch *ds,
struct dsa_notifier_fdb_info *info)
{
const struct switchdev_obj_port_fdb *fdb = info->fdb;
struct switchdev_trans *trans = info->trans;
/* Do not care yet about other switch chips of the fabric */
if (ds->index != info->sw_index)
return 0;
if (switchdev_trans_ph_prepare(trans)) {
if (!ds->ops->port_fdb_prepare || !ds->ops->port_fdb_add)
return -EOPNOTSUPP;
return ds->ops->port_fdb_prepare(ds, info->port, fdb, trans);
}
ds->ops->port_fdb_add(ds, info->port, fdb, trans);
return 0;
}
static int dsa_switch_fdb_del(struct dsa_switch *ds,
struct dsa_notifier_fdb_info *info)
{
const struct switchdev_obj_port_fdb *fdb = info->fdb;
/* Do not care yet about other switch chips of the fabric */
if (ds->index != info->sw_index)
return 0;
if (!ds->ops->port_fdb_del)
return -EOPNOTSUPP;
return ds->ops->port_fdb_del(ds, info->port, fdb);
}
static int dsa_switch_event(struct notifier_block *nb,
unsigned long event, void *info)
{
@ -100,6 +137,12 @@ static int dsa_switch_event(struct notifier_block *nb,
case DSA_NOTIFIER_BRIDGE_LEAVE:
err = dsa_switch_bridge_leave(ds, info);
break;
case DSA_NOTIFIER_FDB_ADD:
err = dsa_switch_fdb_add(ds, info);
break;
case DSA_NOTIFIER_FDB_DEL:
err = dsa_switch_fdb_del(ds, info);
break;
default:
err = -EOPNOTSUPP;
break;