Commit 33f807ba authored by Stephen Hemminger's avatar Stephen Hemminger Committed by David S. Miller

[NETPOLL]: Kill NETPOLL_RX_DROP, set but never tested.

Signed-off-by: default avatarStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 09538641
......@@ -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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