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>

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 2456bd5..bce9bf4 100644 (file)
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -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;
                }