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net: dsa: Add netconsole support

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Add support for using DSA slave network devices with netconsole, which
requires us to allocate and free custom netpoll instances and invoke the
parent network device poll controller callback.

In order for netconsole to work, we need to construct the DSA tag, but
not queue the skb for transmission on the master network device xmit
function.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli
2015-07-31 11:42:57 -07:00
committed by David S. Miller
parent 4ed70ce9f0
commit 04ff53f96a
2 changed files with 71 additions and 0 deletions
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4
net/dsa/dsa_priv.h
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@@ -13,6 +13,7 @@
#include <linux/phy.h>
#include <linux/netdevice.h>
#include <linux/netpoll.h>
struct dsa_device_ops {
struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
@@ -47,6 +48,9 @@ struct dsa_slave_priv {
int old_duplex;
struct net_device *bridge_dev;
#ifdef CONFIG_NET_POLL_CONTROLLER
struct netpoll *netpoll;
#endif
};
/* dsa.c */