net: add netif_tx_queue_frozen_or_stopped

When testing struct netdev_queue state against FROZEN bit, we also test
XOFF bit. We can test both bits at once and save some cycles.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 4 insertions, 7 deletions

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 5dbb3cd96e59..7f0bd8952646 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -60,8 +60,7 @@ static inline struct sk_buff *dequeue_skb(struct Qdisc *q)
 
                 /* check the reason of requeuing without tx lock first */
                 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
-                if (!netif_tx_queue_stopped(txq) &&
-                    !netif_tx_queue_frozen(txq)) {
+                if (!netif_tx_queue_frozen_or_stopped(txq)) {
                         q->gso_skb = NULL;
                         q->q.qlen--;
                 } else
@@ -122,7 +121,7 @@ int sch_direct_xmit(struct sk_buff *skb, struct Qdisc *q,
         spin_unlock(root_lock);
 
         HARD_TX_LOCK(dev, txq, smp_processor_id());
-        if (!netif_tx_queue_stopped(txq) && !netif_tx_queue_frozen(txq))
+        if (!netif_tx_queue_frozen_or_stopped(txq))
                 ret = dev_hard_start_xmit(skb, dev, txq);
 
         HARD_TX_UNLOCK(dev, txq);
@@ -144,8 +143,7 @@ int sch_direct_xmit(struct sk_buff *skb, struct Qdisc *q,
                 ret = dev_requeue_skb(skb, q);
         }
 
-        if (ret && (netif_tx_queue_stopped(txq) ||
-                    netif_tx_queue_frozen(txq)))
+        if (ret && netif_tx_queue_frozen_or_stopped(txq))
                 ret = 0;
 
         return ret;
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 401af9596709..106479a7c94a 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -309,8 +309,7 @@ restart:
                         if (__netif_tx_trylock(slave_txq)) {
                                 unsigned int length = qdisc_pkt_len(skb);
 
-                                if (!netif_tx_queue_stopped(slave_txq) &&
-                                    !netif_tx_queue_frozen(slave_txq) &&
+                                if (!netif_tx_queue_frozen_or_stopped(slave_txq) &&
                                     slave_ops->ndo_start_xmit(skb, slave) == NETDEV_TX_OK) {
                                         txq_trans_update(slave_txq);
                                         __netif_tx_unlock(slave_txq);