diff options
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/netpoll.c | 57 |
1 files changed, 38 insertions, 19 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index a119696d552..ab3c0c9713b 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -130,19 +130,20 @@ static int checksum_udp(struct sk_buff *skb, struct udphdr *uh, */ static void poll_napi(struct netpoll *np) { + struct netpoll_info *npinfo = np->dev->npinfo; int budget = 16; if (test_bit(__LINK_STATE_RX_SCHED, &np->dev->state) && - np->poll_owner != smp_processor_id() && - spin_trylock(&np->poll_lock)) { - np->rx_flags |= NETPOLL_RX_DROP; + npinfo->poll_owner != smp_processor_id() && + spin_trylock(&npinfo->poll_lock)) { + npinfo->rx_flags |= NETPOLL_RX_DROP; atomic_inc(&trapped); np->dev->poll(np->dev, &budget); atomic_dec(&trapped); - np->rx_flags &= ~NETPOLL_RX_DROP; - spin_unlock(&np->poll_lock); + npinfo->rx_flags &= ~NETPOLL_RX_DROP; + spin_unlock(&npinfo->poll_lock); } } @@ -245,6 +246,7 @@ repeat: static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb) { int status; + struct netpoll_info *npinfo; repeat: if(!np || !np->dev || !netif_running(np->dev)) { @@ -253,8 +255,9 @@ repeat: } /* avoid recursion */ - if(np->poll_owner == smp_processor_id() || - np->dev->xmit_lock_owner == smp_processor_id()) { + npinfo = np->dev->npinfo; + if (npinfo->poll_owner == smp_processor_id() || + np->dev->xmit_lock_owner == smp_processor_id()) { if (np->drop) np->drop(skb); else @@ -341,14 +344,18 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len) static void arp_reply(struct sk_buff *skb) { + struct netpoll_info *npinfo = skb->dev->npinfo; struct arphdr *arp; unsigned char *arp_ptr; int size, type = ARPOP_REPLY, ptype = ETH_P_ARP; u32 sip, tip; struct sk_buff *send_skb; - struct netpoll *np = skb->dev->np; + struct netpoll *np = NULL; - if (!np) return; + if (npinfo) + np = npinfo->np; + if (!np) + return; /* No arp on this interface */ if (skb->dev->flags & IFF_NOARP) @@ -429,7 +436,7 @@ int __netpoll_rx(struct sk_buff *skb) int proto, len, ulen; struct iphdr *iph; struct udphdr *uh; - struct netpoll *np = skb->dev->np; + struct netpoll *np = skb->dev->npinfo->np; if (!np->rx_hook) goto out; @@ -611,9 +618,7 @@ int netpoll_setup(struct netpoll *np) { struct net_device *ndev = NULL; struct in_device *in_dev; - - np->poll_lock = SPIN_LOCK_UNLOCKED; - np->poll_owner = -1; + struct netpoll_info *npinfo; if (np->dev_name) ndev = dev_get_by_name(np->dev_name); @@ -624,7 +629,16 @@ int netpoll_setup(struct netpoll *np) } np->dev = ndev; - ndev->np = np; + if (!ndev->npinfo) { + npinfo = kmalloc(sizeof(*npinfo), GFP_KERNEL); + if (!npinfo) + goto release; + + npinfo->np = NULL; + npinfo->poll_lock = SPIN_LOCK_UNLOCKED; + npinfo->poll_owner = -1; + } else + npinfo = ndev->npinfo; if (!ndev->poll_controller) { printk(KERN_ERR "%s: %s doesn't support polling, aborting.\n", @@ -693,12 +707,15 @@ int netpoll_setup(struct netpoll *np) } if(np->rx_hook) - np->rx_flags = NETPOLL_RX_ENABLED; + npinfo->rx_flags = NETPOLL_RX_ENABLED; + npinfo->np = np; + ndev->npinfo = npinfo; return 0; release: - ndev->np = NULL; + if (!ndev->npinfo) + kfree(npinfo); np->dev = NULL; dev_put(ndev); return -1; @@ -706,9 +723,11 @@ int netpoll_setup(struct netpoll *np) void netpoll_cleanup(struct netpoll *np) { - if (np->dev) - np->dev->np = NULL; - dev_put(np->dev); + if (np->dev) { + if (np->dev->npinfo) + np->dev->npinfo->np = NULL; + dev_put(np->dev); + } np->dev = NULL; } |