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Date: Thu, 28 May 2015 17:37:13 -0400
From: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To: netdev@...r.kernel.org
Cc: Guenter Roeck <linux@...ck-us.net>,
Florian Fainelli <f.fainelli@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Jerome Oufella <jerome.oufella@...oirfairelinux.com>,
Chris Healy <cphealy@...il.com>, Jiri Pirko <jiri@...nulli.us>,
Scott Feldman <sfeldma@...il.com>,
Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: [RFC 1/3] net: dsa: add basic support for VLAN ndo
This patch adds the ndo_vlan_rx_add_vid, ndo_vlan_rx_kill_vid, and
ndo_bridge_setlink wrapper operations, used to create and remove VLAN
entries in a DSA switch VLAN database.
The switch drivers have to implement the port_vlan_add, port_vlan_kill,
and port_bridge_setlink functions, in order to support VLANs.
Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
---
include/net/dsa.h | 9 +++++++
net/dsa/slave.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
2 files changed, 83 insertions(+), 2 deletions(-)
diff --git a/include/net/dsa.h b/include/net/dsa.h
index fbca63b..cf02357 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -19,6 +19,7 @@
#include <linux/phy.h>
#include <linux/phy_fixed.h>
#include <linux/ethtool.h>
+#include <uapi/linux/if_bridge.h>
enum dsa_tag_protocol {
DSA_TAG_PROTO_NONE = 0,
@@ -302,6 +303,14 @@ struct dsa_switch_driver {
const unsigned char *addr, u16 vid);
int (*fdb_getnext)(struct dsa_switch *ds, int port,
unsigned char *addr, bool *is_static);
+
+ /*
+ * VLAN support
+ */
+ int (*port_vlan_add)(struct dsa_switch *ds, int port, u16 vid);
+ int (*port_vlan_kill)(struct dsa_switch *ds, int port, u16 vid);
+ int (*port_bridge_setlink)(struct dsa_switch *ds, int port,
+ struct bridge_vlan_info *vinfo);
};
void register_switch_driver(struct dsa_switch_driver *type);
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 827cda56..72c3ff0 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -412,6 +412,71 @@ static netdev_tx_t dsa_slave_notag_xmit(struct sk_buff *skb,
return NETDEV_TX_OK;
}
+static int dsa_slave_vlan_rx_add_vid(struct net_device *dev,
+ __be16 proto, u16 vid)
+{
+ struct dsa_slave_priv *p = netdev_priv(dev);
+ struct dsa_switch *ds = p->parent;
+
+ if (!ds->drv->port_vlan_add)
+ return -EOPNOTSUPP;
+
+ netdev_dbg(dev, "adding to VLAN %d\n", vid);
+
+ return ds->drv->port_vlan_add(ds, p->port, vid);
+}
+
+static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev,
+ __be16 proto, u16 vid)
+{
+ struct dsa_slave_priv *p = netdev_priv(dev);
+ struct dsa_switch *ds = p->parent;
+
+ if (!ds->drv->port_vlan_kill)
+ return -EOPNOTSUPP;
+
+ netdev_dbg(dev, "removing from VLAN %d\n", vid);
+
+ return ds->drv->port_vlan_kill(ds, p->port, vid);
+}
+
+static int dsa_slave_bridge_setlink(struct net_device *dev,
+ struct nlmsghdr *nlh, u16 flags)
+{
+ struct dsa_slave_priv *p = netdev_priv(dev);
+ struct dsa_switch *ds = p->parent;
+ struct nlattr *afspec;
+ struct nlattr *attr;
+ struct bridge_vlan_info *vinfo = NULL;
+ int rem;
+
+ if (!ds->drv->port_bridge_setlink)
+ return -EOPNOTSUPP;
+
+ afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
+ if (!afspec)
+ return -EINVAL;
+
+ nla_for_each_nested(attr, afspec, rem) {
+ if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO)
+ continue;
+
+ if (nla_len(attr) != sizeof(struct bridge_vlan_info))
+ return -EINVAL;
+
+ vinfo = nla_data(attr);
+ }
+
+ if (!vinfo)
+ return -EINVAL;
+
+ netdev_dbg(dev, "setting link to VLAN %d%s%s\n", vinfo->vid,
+ vinfo->flags & BRIDGE_VLAN_INFO_UNTAGGED ? " untagged" : "",
+ vinfo->flags & BRIDGE_VLAN_INFO_PVID ? " (default)" : "");
+
+ return ds->drv->port_bridge_setlink(ds, p->port, vinfo);
+}
+
/* ethtool operations *******************************************************/
static int
@@ -673,6 +738,9 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
.ndo_fdb_dump = dsa_slave_fdb_dump,
.ndo_do_ioctl = dsa_slave_ioctl,
.ndo_get_iflink = dsa_slave_get_iflink,
+ .ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid,
+ .ndo_bridge_setlink = dsa_slave_bridge_setlink,
};
static const struct swdev_ops dsa_slave_swdev_ops = {
@@ -854,7 +922,9 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
if (slave_dev == NULL)
return -ENOMEM;
- slave_dev->features = master->vlan_features;
+ slave_dev->features = master->vlan_features |
+ NETIF_F_VLAN_FEATURES |
+ NETIF_F_HW_SWITCH_OFFLOAD;
slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
eth_hw_addr_inherit(slave_dev, master);
slave_dev->tx_queue_len = 0;
@@ -863,7 +933,9 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
SET_NETDEV_DEV(slave_dev, parent);
slave_dev->dev.of_node = ds->pd->port_dn[port];
- slave_dev->vlan_features = master->vlan_features;
+ slave_dev->vlan_features = master->vlan_features |
+ NETIF_F_VLAN_FEATURES |
+ NETIF_F_HW_SWITCH_OFFLOAD;
p = netdev_priv(slave_dev);
p->dev = slave_dev;
--
2.4.1
--
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