aboutsummaryrefslogtreecommitdiff
path: root/net/core/netpoll.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/core/netpoll.c')
-rw-r--r--net/core/netpoll.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 59ed186e4f4..d09affdbad3 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -33,6 +33,7 @@
#define MAX_UDP_CHUNK 1460
#define MAX_SKBS 32
#define MAX_QUEUE_DEPTH (MAX_SKBS / 2)
+#define MAX_RETRIES 20000
static DEFINE_SPINLOCK(skb_list_lock);
static int nr_skbs;
@@ -265,7 +266,8 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
return;
}
- while (1) {
+ do {
+ npinfo->tries--;
spin_lock(&np->dev->xmit_lock);
np->dev->xmit_lock_owner = smp_processor_id();
@@ -277,6 +279,7 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
np->dev->xmit_lock_owner = -1;
spin_unlock(&np->dev->xmit_lock);
netpoll_poll(np);
+ udelay(50);
continue;
}
@@ -285,12 +288,15 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
spin_unlock(&np->dev->xmit_lock);
/* success */
- if(!status)
+ if(!status) {
+ npinfo->tries = MAX_RETRIES; /* reset */
return;
+ }
/* transmit busy */
netpoll_poll(np);
- }
+ udelay(50);
+ } while (npinfo->tries > 0);
}
void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
@@ -642,6 +648,7 @@ int netpoll_setup(struct netpoll *np)
npinfo->rx_np = NULL;
npinfo->poll_lock = SPIN_LOCK_UNLOCKED;
npinfo->poll_owner = -1;
+ npinfo->tries = MAX_RETRIES;
npinfo->rx_lock = SPIN_LOCK_UNLOCKED;
} else
npinfo = ndev->npinfo;