Commit c18370f5 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller
Browse files

netpoll: Add netpoll_tx_running



This patch adds the helper netpoll_tx_running for use within
ndo_start_xmit.  It returns non-zero if ndo_start_xmit is being
invoked by netpoll, and zero otherwise.

This is currently implemented by simply looking at the hardirq
count.  This is because for all non-netpoll uses of ndo_start_xmit,
IRQs must be enabled while netpoll always disables IRQs before
calling ndo_start_xmit.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8fdd95ec
......@@ -116,6 +116,11 @@ static inline void netpoll_poll_unlock(void *have)
}
}
static inline int netpoll_tx_running(struct net_device *dev)
{
return irqs_disabled();
}
#else
static inline int netpoll_rx(struct sk_buff *skb)
{
......@@ -139,6 +144,10 @@ static inline void netpoll_poll_unlock(void *have)
static inline void netpoll_netdev_init(struct net_device *dev)
{
}
static inline int netpoll_tx_running(struct net_device *dev)
{
return 0;
}
#endif
#endif
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