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authorDavid S. Miller <davem@davemloft.net>2008-03-04 12:28:49 -0800
committerDavid S. Miller <davem@davemloft.net>2008-03-04 12:28:49 -0800
commitd9452e9f81e997cbd0c9bface8d2c2a4b064cc3e (patch)
tree6f0ea6264fa359293cc6093fff763305d4c0e9f4 /include/linux/netpoll.h
parentec9b6add7d81f902f6094e71f595da4a362f3348 (diff)
downloadop-kernel-dev-d9452e9f81e997cbd0c9bface8d2c2a4b064cc3e.zip
op-kernel-dev-d9452e9f81e997cbd0c9bface8d2c2a4b064cc3e.tar.gz
[NETPOLL]: Revert two bogus cleanups that broke netconsole.
Based upon a report by Andrew Morton and code analysis done by Jarek Poplawski. This reverts 33f807ba0d9259e7c75c7a2ce8bd2787e5b540c7 ("[NETPOLL]: Kill NETPOLL_RX_DROP, set but never tested.") and c7b6ea24b43afb5749cb704e143df19d70e23dea ("[NETPOLL]: Don't need rx_flags."). The rx_flags did get tested for zero vs. non-zero and therefore we do need those tests and that code which sets NETPOLL_RX_DROP et al. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netpoll.h')
-rw-r--r--include/linux/netpoll.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index a0525a1..e3d7959 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -25,6 +25,7 @@ struct netpoll {
struct netpoll_info {
atomic_t refcnt;
+ 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 */
@@ -50,12 +51,12 @@ static inline int netpoll_rx(struct sk_buff *skb)
unsigned long flags;
int ret = 0;
- if (!npinfo || !npinfo->rx_np)
+ if (!npinfo || (!npinfo->rx_np && !npinfo->rx_flags))
return 0;
spin_lock_irqsave(&npinfo->rx_lock, flags);
- /* check rx_np again with the lock held */
- if (npinfo->rx_np && __netpoll_rx(skb))
+ /* check rx_flags again with the lock held */
+ if (npinfo->rx_flags && __netpoll_rx(skb))
ret = 1;
spin_unlock_irqrestore(&npinfo->rx_lock, flags);
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