#include <linux/netdevice.h>
#include <linux/interrupt.h>
+#include <linux/rcupdate.h>
#include <linux/list.h>
-struct netpoll;
-
struct netpoll {
struct net_device *dev;
- char dev_name[16], *name;
+ char dev_name[IFNAMSIZ];
+ const char *name;
void (*rx_hook)(struct netpoll *, int, char *, int);
- void (*drop)(struct sk_buff *skb);
+
u32 local_ip, remote_ip;
u16 local_port, remote_port;
- unsigned char local_mac[6], remote_mac[6];
+ u8 local_mac[ETH_ALEN], remote_mac[ETH_ALEN];
};
struct netpoll_info {
+ atomic_t refcnt;
spinlock_t poll_lock;
int poll_owner;
int rx_flags;
spinlock_t rx_lock;
struct netpoll *rx_np; /* netpoll that registered an rx_hook */
+ struct sk_buff_head arp_tx; /* list of arp requests to reply to */
+ struct sk_buff_head txq;
+ struct delayed_work tx_work;
};
void netpoll_poll(struct netpoll *np);
void netpoll_set_trap(int trap);
void netpoll_cleanup(struct netpoll *np);
int __netpoll_rx(struct sk_buff *skb);
-void netpoll_queue(struct sk_buff *skb);
+
#ifdef CONFIG_NETPOLL
static inline int netpoll_rx(struct sk_buff *skb)
return ret;
}
-static inline void netpoll_poll_lock(struct net_device *dev)
+static inline void *netpoll_poll_lock(struct net_device *dev)
{
+ rcu_read_lock(); /* deal with race on ->npinfo */
if (dev->npinfo) {
spin_lock(&dev->npinfo->poll_lock);
dev->npinfo->poll_owner = smp_processor_id();
+ return dev->npinfo;
}
+ return NULL;
}
-static inline void netpoll_poll_unlock(struct net_device *dev)
+static inline void netpoll_poll_unlock(void *have)
{
- if (dev->npinfo) {
- dev->npinfo->poll_owner = -1;
- spin_unlock(&dev->npinfo->poll_lock);
+ struct netpoll_info *npi = have;
+
+ if (npi) {
+ npi->poll_owner = -1;
+ spin_unlock(&npi->poll_lock);
}
+ rcu_read_unlock();
}
#else
#define netpoll_rx(a) 0
-#define netpoll_poll_lock(a)
+#define netpoll_poll_lock(a) NULL
#define netpoll_poll_unlock(a)
#endif