diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-03-04 20:20:58 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-03-04 20:20:58 -0800 |
commit | 27d0483aa1ef66a8877d71b63bb97f46ab0246b2 (patch) | |
tree | ca84a9db8c79b789d40d2d9ae30d0349fd3562fc /net/core/netpoll.c | |
parent | 665c1ef8369138dad7773da6407fe77ccff87deb (diff) | |
parent | dea75bdfa57f75a7a7ec2961ec28db506c18e5db (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (22 commits)
[IPCONFIG]: The kernel gets no IP from some DHCP servers
b43legacy: Fix module init message
rndis_wlan: fix broken data copy
libertas: compare the current command with response
libertas: fix sanity check on sequence number in command response
p54: fix eeprom parser length sanity checks
p54: fix EEPROM structure endianness
ssb: Add pcibios_enable_device() return value check
rc80211-pid: fix rate adjustment
[ESP]: Add select on AUTHENC
[TCP]: Improve ipv4 established hash function.
[NETPOLL]: Revert two bogus cleanups that broke netconsole.
[PPPOL2TP]: Add missing sock_put() in pppol2tp_tunnel_closeall()
Subject: [PPPOL2TP] add missing sock_put() in pppol2tp_recv_dequeue()
[BLUETOOTH]: l2cap info_timer delete fix in hci_conn_del
[NET]: Fix race in generic address resolution.
iucv: fix build error on !SMP
[TCP]: Must count fack_count also when skipping
[TUN]: Fix RTNL-locking in tun/tap driver
[SCTP]: Use proc_create to setup de->proc_fops.
...
Diffstat (limited to 'net/core/netpoll.c')
-rw-r--r-- | net/core/netpoll.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index 6faa128a4c8..4b7e756181c 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -39,6 +39,8 @@ static struct sk_buff_head skb_pool; static atomic_t trapped; #define USEC_PER_POLL 50 +#define NETPOLL_RX_ENABLED 1 +#define NETPOLL_RX_DROP 2 #define MAX_SKB_SIZE \ (MAX_UDP_CHUNK + sizeof(struct udphdr) + \ @@ -126,11 +128,13 @@ static int poll_one_napi(struct netpoll_info *npinfo, if (!test_bit(NAPI_STATE_SCHED, &napi->state)) return budget; + npinfo->rx_flags |= NETPOLL_RX_DROP; atomic_inc(&trapped); work = napi->poll(napi, budget); atomic_dec(&trapped); + npinfo->rx_flags &= ~NETPOLL_RX_DROP; return budget - work; } @@ -472,7 +476,7 @@ int __netpoll_rx(struct sk_buff *skb) if (skb->dev->type != ARPHRD_ETHER) goto out; - /* if receive ARP during middle of NAPI poll, then queue */ + /* check if netpoll clients need ARP */ if (skb->protocol == htons(ETH_P_ARP) && atomic_read(&trapped)) { skb_queue_tail(&npi->arp_tx, skb); @@ -534,9 +538,6 @@ int __netpoll_rx(struct sk_buff *skb) return 1; out: - /* If packet received while already in poll then just - * silently drop. - */ if (atomic_read(&trapped)) { kfree_skb(skb); return 1; @@ -675,6 +676,7 @@ int netpoll_setup(struct netpoll *np) goto release; } + npinfo->rx_flags = 0; npinfo->rx_np = NULL; spin_lock_init(&npinfo->rx_lock); @@ -756,6 +758,7 @@ int netpoll_setup(struct netpoll *np) if (np->rx_hook) { spin_lock_irqsave(&npinfo->rx_lock, flags); + npinfo->rx_flags |= NETPOLL_RX_ENABLED; npinfo->rx_np = np; spin_unlock_irqrestore(&npinfo->rx_lock, flags); } @@ -797,6 +800,7 @@ void netpoll_cleanup(struct netpoll *np) if (npinfo->rx_np == np) { spin_lock_irqsave(&npinfo->rx_lock, flags); npinfo->rx_np = NULL; + npinfo->rx_flags &= ~NETPOLL_RX_ENABLED; spin_unlock_irqrestore(&npinfo->rx_lock, flags); } |