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authorFlorian Fainelli <f.fainelli@gmail.com>2014-08-27 17:04:52 -0700
committerDavid S. Miller <davem@davemloft.net>2014-08-27 22:59:40 -0700
commit5aed85cec29882d1c4b4b2a01cb75a99efdbe4ed (patch)
treec2a68a4275a8aefb66c4d1e359d76704c6894817 /net/dsa
parent0d8bcdd383b8865e752a7e8edb4712c2e3902052 (diff)
net: dsa: allow switches to work without tagging
In case switch port tagging is disabled (voluntarily, or the switch just does not support it), allow us to continue using the defined set of dsa_device_ops in net/dsa/slave.c. We introduce dsa_protocol_is_tagged() to check whether we need to override skb->protocol and go through the DSA-specifif packet_type function, or if we just go on and receive the SKB through the normal path. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
-rw-r--r--net/dsa/slave.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 03d2894a0f8a..241c2a1684cb 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -181,6 +181,17 @@ static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
return dst->ops->xmit(skb, dev);
}
+static netdev_tx_t dsa_slave_notag_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct dsa_slave_priv *p = netdev_priv(dev);
+
+ skb->dev = p->parent->dst->master_netdev;
+ dev_queue_xmit(skb);
+
+ return NETDEV_TX_OK;
+}
+
/* ethtool operations *******************************************************/
static int
@@ -314,6 +325,11 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
.ndo_do_ioctl = dsa_slave_ioctl,
};
+static const struct dsa_device_ops notag_netdev_ops = {
+ .xmit = dsa_slave_notag_xmit,
+ .rcv = NULL,
+};
+
static void dsa_slave_adjust_link(struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
@@ -415,7 +431,8 @@ dsa_slave_create(struct dsa_switch *ds, struct device *parent,
break;
#endif
default:
- BUG();
+ ds->dst->ops = &notag_netdev_ops;
+ break;
}
SET_NETDEV_DEV(slave_dev, parent);

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