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pktgen: reorganize transmit loop 

Handle standard (and non-standard) return values in a switch.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2009-08-27 13:55:14 +00:00 committed by David S. Miller
parent e470757d61
commit 5b8db2f568
1 changed files with 14 additions and 12 deletions
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26
net/core/pktgen.c
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@ -3424,27 +3424,29 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
pkt_dev->last_ok = 0;
else {
atomic_inc(&(pkt_dev->skb->users));
retry_now:
retry_now:
ret = (*xmit)(pkt_dev->skb, odev);
if (likely(ret == NETDEV_TX_OK)) {
switch (ret) {
case NETDEV_TX_OK:
txq_trans_update(txq);
pkt_dev->last_ok = 1;
pkt_dev->sofar++;
pkt_dev->seq_num++;
pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
} else if (ret == NETDEV_TX_LOCKED
&& (odev->features & NETIF_F_LLTX)) {
break;
case NETDEV_TX_LOCKED:
cpu_relax();
goto retry_now;
} else { /* Retry it next time */
atomic_dec(&(pkt_dev->skb->users));
if (debug && net_ratelimit())
printk(KERN_INFO "pktgen: Hard xmit error\n");
default: /* Drivers are not supposed to return other values! */
if (net_ratelimit())
pr_info("pktgen: %s xmit error: %d\n",
odev->name, ret);
pkt_dev->errors++;
/* fallthru */
case NETDEV_TX_BUSY:
/* Retry it next time */
atomic_dec(&(pkt_dev->skb->users));
pkt_dev->last_ok = 0;
}