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author | Jeff Moyer <jmoyer@redhat.com> | 2005-06-22 22:05:31 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2005-06-22 22:05:31 -0700 |
commit | 115c1d6e61b70851d9a363328c3b8d4c2559a1d3 (patch) | |
tree | 3bc37b036fd3ef72d188ff73da94472b40c05a44 /include/linux/netpoll.h | |
parent | 6ca4f65e6b390d09e1de7280cf9fd4f5d8e4b48b (diff) | |
download | linux-stable-115c1d6e61b70851d9a363328c3b8d4c2559a1d3.tar.gz linux-stable-115c1d6e61b70851d9a363328c3b8d4c2559a1d3.tar.bz2 linux-stable-115c1d6e61b70851d9a363328c3b8d4c2559a1d3.zip |
[NETPOLL]: Introduce a netpoll_info struct
This patch introduces a netpoll_info structure, which the struct net_device
will now point to instead of pointing to a struct netpoll. The reason for
this is two-fold: 1) fields such as the rx_flags, poll_owner, and poll_lock
should be maintained per net_device, not per netpoll; and 2) this is a first
step in providing support for multiple netpoll clients to register against the
same net_device.
The struct netpoll is now pointed to by the netpoll_info structure. As
such, the previous behaviour of the code is preserved.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netpoll.h')
-rw-r--r-- | include/linux/netpoll.h | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h index 449a4fde6587..388cd91bc7a6 100644 --- a/include/linux/netpoll.h +++ b/include/linux/netpoll.h @@ -16,14 +16,18 @@ struct netpoll; struct netpoll { struct net_device *dev; char dev_name[16], *name; - int rx_flags; 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]; +}; + +struct netpoll_info { spinlock_t poll_lock; int poll_owner; + int rx_flags; + struct netpoll *np; }; void netpoll_poll(struct netpoll *np); @@ -39,22 +43,27 @@ void netpoll_queue(struct sk_buff *skb); #ifdef CONFIG_NETPOLL static inline int netpoll_rx(struct sk_buff *skb) { - return skb->dev->np && skb->dev->np->rx_flags && __netpoll_rx(skb); + struct netpoll_info *npinfo = skb->dev->npinfo; + + if (!npinfo || !npinfo->rx_flags) + return 0; + + return npinfo->np && __netpoll_rx(skb); } static inline void netpoll_poll_lock(struct net_device *dev) { - if (dev->np) { - spin_lock(&dev->np->poll_lock); - dev->np->poll_owner = smp_processor_id(); + if (dev->npinfo) { + spin_lock(&dev->npinfo->poll_lock); + dev->npinfo->poll_owner = smp_processor_id(); } } static inline void netpoll_poll_unlock(struct net_device *dev) { - if (dev->np) { - dev->np->poll_owner = -1; - spin_unlock(&dev->np->poll_lock); + if (dev->npinfo) { + dev->npinfo->poll_owner = -1; + spin_unlock(&dev->npinfo->poll_lock); } } |