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| author | David S. Miller <davem@davemloft.net> | 2008-03-04 12:28:49 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-04 12:28:49 -0800 |
| commit | d9452e9f81e997cbd0c9bface8d2c2a4b064cc3e (patch) | |
| tree | 6f0ea6264fa359293cc6093fff763305d4c0e9f4 /include | |
| parent | ec9b6add7d81f902f6094e71f595da4a362f3348 (diff) | |
| download | lwn-d9452e9f81e997cbd0c9bface8d2c2a4b064cc3e.tar.gz lwn-d9452e9f81e997cbd0c9bface8d2c2a4b064cc3e.zip | |
[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')
| -rw-r--r-- | include/linux/netpoll.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h index a0525a1f4715..e3d79593fb3a 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); |