#include <linux/rcupdate.h>
#include <linux/list.h>
-struct netpoll;
-
struct netpoll {
struct net_device *dev;
- char dev_name[16], *name;
+ struct net_device *real_dev;
+ char dev_name[IFNAMSIZ];
+ const char *name;
void (*rx_hook)(struct netpoll *, int, char *, int);
- u32 local_ip, remote_ip;
+ __be32 local_ip, remote_ip;
u16 local_port, remote_port;
- unsigned char local_mac[6], remote_mac[6];
+ u8 remote_mac[ETH_ALEN];
+
+ struct list_head rx; /* rx_np list element */
};
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 list_head rx_np; /* netpolls that registered an rx_hook */
+
struct sk_buff_head arp_tx; /* list of arp requests to reply to */
struct sk_buff_head txq;
- struct work_struct tx_work;
+
+ struct delayed_work tx_work;
+
+ struct netpoll *netpoll;
};
+void netpoll_poll_dev(struct net_device *dev);
void netpoll_poll(struct netpoll *np);
void netpoll_send_udp(struct netpoll *np, const char *msg, int len);
+void netpoll_print_options(struct netpoll *np);
int netpoll_parse_options(struct netpoll *np, char *opt);
int netpoll_setup(struct netpoll *np);
int netpoll_trap(void);
void netpoll_set_trap(int trap);
void netpoll_cleanup(struct netpoll *np);
int __netpoll_rx(struct sk_buff *skb);
+void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb);
#ifdef CONFIG_NETPOLL
-static inline int netpoll_rx(struct sk_buff *skb)
+static inline bool netpoll_rx(struct sk_buff *skb)
{
struct netpoll_info *npinfo = skb->dev->npinfo;
unsigned long flags;
- int ret = 0;
+ bool ret = false;
- if (!npinfo || (!npinfo->rx_np && !npinfo->rx_flags))
- return 0;
+ if (!npinfo || (list_empty(&npinfo->rx_np) && !npinfo->rx_flags))
+ return false;
spin_lock_irqsave(&npinfo->rx_lock, flags);
/* check rx_flags again with the lock held */
if (npinfo->rx_flags && __netpoll_rx(skb))
- ret = 1;
+ ret = true;
spin_unlock_irqrestore(&npinfo->rx_lock, flags);
return ret;
}
-static inline void *netpoll_poll_lock(struct net_device *dev)
+static inline int netpoll_rx_on(struct sk_buff *skb)
+{
+ struct netpoll_info *npinfo = skb->dev->npinfo;
+
+ return npinfo && (!list_empty(&npinfo->rx_np) || npinfo->rx_flags);
+}
+
+static inline int netpoll_receive_skb(struct sk_buff *skb)
{
+ if (!list_empty(&skb->dev->napi_list))
+ return netpoll_rx(skb);
+ return 0;
+}
+
+static inline void *netpoll_poll_lock(struct napi_struct *napi)
+{
+ struct net_device *dev = napi->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;
+ if (dev && dev->npinfo) {
+ spin_lock(&napi->poll_lock);
+ napi->poll_owner = smp_processor_id();
+ return napi;
}
return NULL;
}
static inline void netpoll_poll_unlock(void *have)
{
- struct netpoll_info *npi = have;
+ struct napi_struct *napi = have;
- if (npi) {
- npi->poll_owner = -1;
- spin_unlock(&npi->poll_lock);
+ if (napi) {
+ napi->poll_owner = -1;
+ spin_unlock(&napi->poll_lock);
}
rcu_read_unlock();
}
#else
-#define netpoll_rx(a) 0
-#define netpoll_poll_lock(a) NULL
-#define netpoll_poll_unlock(a)
+static inline int netpoll_rx(struct sk_buff *skb)
+{
+ return 0;
+}
+static inline int netpoll_rx_on(struct sk_buff *skb)
+{
+ return 0;
+}
+static inline int netpoll_receive_skb(struct sk_buff *skb)
+{
+ return 0;
+}
+static inline void *netpoll_poll_lock(struct napi_struct *napi)
+{
+ return NULL;
+}
+static inline void netpoll_poll_unlock(void *have)
+{
+}
+static inline void netpoll_netdev_init(struct net_device *dev)
+{
+}
#endif
#endif