switchdev: Pass original device to port netdev driver
switchdev drivers need to know the netdev on which the switchdev op was
invoked. For example, the STP state of a VLAN interface configured on top
of a port can change while being member in a bridge. In this case, the
underlying driver should only change the STP state of that particular
VLAN and not of all the VLANs configured on the port.
However, current switchdev infrastructure only passes the port netdev down
to the driver. Solve that by passing the original device down to the
driver as part of the required switchdev object / attribute.
This doesn't entail any change in current switchdev drivers. It simply
enables those supporting stacked devices to know the originating device
and act accordingly.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index f34e535..df790d3 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -723,6 +723,7 @@
u32 filter_mask)
{
struct switchdev_vlan_dump dump = {
+ .vlan.obj.orig_dev = dev,
.vlan.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
.skb = skb,
.filter_mask = filter_mask,
@@ -757,6 +758,7 @@
int nlflags)
{
struct switchdev_attr attr = {
+ .orig_dev = dev,
.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
};
u16 mode = BRIDGE_MODE_UNDEF;
@@ -778,6 +780,7 @@
unsigned long brport_flag)
{
struct switchdev_attr attr = {
+ .orig_dev = dev,
.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
};
u8 flag = nla_get_u8(nlattr);
@@ -853,6 +856,7 @@
struct nlattr *attr;
struct bridge_vlan_info *vinfo;
struct switchdev_obj_port_vlan vlan = {
+ .obj.orig_dev = dev,
.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
};
int rem;
@@ -975,6 +979,7 @@
u16 vid, u16 nlm_flags)
{
struct switchdev_obj_port_fdb fdb = {
+ .obj.orig_dev = dev,
.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB,
.vid = vid,
};
@@ -1000,6 +1005,7 @@
u16 vid)
{
struct switchdev_obj_port_fdb fdb = {
+ .obj.orig_dev = dev,
.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB,
.vid = vid,
};
@@ -1077,6 +1083,7 @@
struct net_device *filter_dev, int idx)
{
struct switchdev_fdb_dump dump = {
+ .fdb.obj.orig_dev = dev,
.fdb.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB,
.dev = dev,
.skb = skb,
@@ -1135,6 +1142,7 @@
if (!dev)
return NULL;
+ attr.orig_dev = dev;
if (switchdev_port_attr_get(dev, &attr))
return NULL;
@@ -1194,6 +1202,7 @@
if (!dev)
return 0;
+ ipv4_fib.obj.orig_dev = dev;
err = switchdev_port_obj_add(dev, &ipv4_fib.obj);
if (!err)
fi->fib_flags |= RTNH_F_OFFLOAD;
@@ -1238,6 +1247,7 @@
if (!dev)
return 0;
+ ipv4_fib.obj.orig_dev = dev;
err = switchdev_port_obj_del(dev, &ipv4_fib.obj);
if (!err)
fi->fib_flags &= ~RTNH_F_OFFLOAD;
@@ -1270,10 +1280,12 @@
struct net_device *b)
{
struct switchdev_attr a_attr = {
+ .orig_dev = a,
.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
.flags = SWITCHDEV_F_NO_RECURSE,
};
struct switchdev_attr b_attr = {
+ .orig_dev = b,
.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
.flags = SWITCHDEV_F_NO_RECURSE,
};
