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authorStephen Hemminger <shemminger@linux-foundation.org>2007-11-19 19:24:52 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:54:18 -0800
commit33f807ba0d9259e7c75c7a2ce8bd2787e5b540c7 (patch)
tree3ffeae5c29c5aa36605dfe7a00dc0f4f95ef9177 /net/core/netpoll.c
parent0953864160bdd28dfe45fd46fa462b4d2d53cb96 (diff)
downloadop-kernel-dev-33f807ba0d9259e7c75c7a2ce8bd2787e5b540c7.zip
op-kernel-dev-33f807ba0d9259e7c75c7a2ce8bd2787e5b540c7.tar.gz
[NETPOLL]: Kill NETPOLL_RX_DROP, set but never tested.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/netpoll.c')
-rw-r--r--net/core/netpoll.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index cf6acd3..9e3aea0 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -40,7 +40,6 @@ 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) + \
@@ -128,13 +127,11 @@ 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;
}
@@ -475,7 +472,7 @@ int __netpoll_rx(struct sk_buff *skb)
if (skb->dev->type != ARPHRD_ETHER)
goto out;
- /* check if netpoll clients need ARP */
+ /* if receive ARP during middle of NAPI poll, then queue */
if (skb->protocol == htons(ETH_P_ARP) &&
atomic_read(&trapped)) {
skb_queue_tail(&npi->arp_tx, skb);
@@ -537,6 +534,9 @@ 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;
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