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Date: Mon, 01 Sep 2014 15:24:38 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: netdev@...r.kernel.org
Subject: [PATCH 1/9] net: Do txq_trans_update() in netdev_start_xmit()
That way we don't have to audit every call site to make sure it is
doing this properly.
Signed-off-by: David S. Miller <davem@...emloft.net>
---
drivers/net/wan/dlci.c | 6 ++++--
include/linux/netdevice.h | 10 ++++++++--
net/core/dev.c | 7 ++-----
net/core/netpoll.c | 4 +---
net/core/pktgen.c | 3 +--
net/packet/af_packet.c | 7 ++-----
net/sched/sch_teql.c | 3 +--
7 files changed, 19 insertions(+), 21 deletions(-)
diff --git a/drivers/net/wan/dlci.c b/drivers/net/wan/dlci.c
index 81b22a1..6427e82 100644
--- a/drivers/net/wan/dlci.c
+++ b/drivers/net/wan/dlci.c
@@ -192,8 +192,10 @@ static netdev_tx_t dlci_transmit(struct sk_buff *skb, struct net_device *dev)
{
struct dlci_local *dlp = netdev_priv(dev);
- if (skb)
- netdev_start_xmit(skb, dlp->slave);
+ if (skb) {
+ struct netdev_queue *txq = skb_get_tx_queue(dev, skb);
+ netdev_start_xmit(skb, dlp->slave, txq);
+ }
return NETDEV_TX_OK;
}
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 456eb1f..1617180 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3437,11 +3437,17 @@ static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops,
return ops->ndo_start_xmit(skb, dev);
}
-static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev,
+ struct netdev_queue *txq)
{
const struct net_device_ops *ops = dev->netdev_ops;
+ int rc;
- return __netdev_start_xmit(ops, skb, dev);
+ rc = __netdev_start_xmit(ops, skb, dev);
+ if (rc == NETDEV_TX_OK)
+ txq_trans_update(txq);
+
+ return rc;
}
int netdev_class_create_file_ns(struct class_attribute *class_attr,
diff --git a/net/core/dev.c b/net/core/dev.c
index a6077ef..6392ada 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2666,10 +2666,8 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
skb_len = skb->len;
trace_net_dev_start_xmit(skb, dev);
- rc = netdev_start_xmit(skb, dev);
+ rc = netdev_start_xmit(skb, dev, txq);
trace_net_dev_xmit(skb, rc, dev, skb_len);
- if (rc == NETDEV_TX_OK)
- txq_trans_update(txq);
return rc;
}
@@ -2685,7 +2683,7 @@ gso:
skb_len = nskb->len;
trace_net_dev_start_xmit(nskb, dev);
- rc = netdev_start_xmit(nskb, dev);
+ rc = netdev_start_xmit(nskb, dev, txq);
trace_net_dev_xmit(nskb, rc, dev, skb_len);
if (unlikely(rc != NETDEV_TX_OK)) {
if (rc & ~NETDEV_TX_MASK)
@@ -2694,7 +2692,6 @@ gso:
skb->next = nskb;
return rc;
}
- txq_trans_update(txq);
if (unlikely(netif_xmit_stopped(txq) && skb->next))
return NETDEV_TX_BUSY;
} while (skb->next);
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 12b1df9..05bc57e 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -91,9 +91,7 @@ static int netpoll_start_xmit(struct sk_buff *skb, struct net_device *dev,
skb->vlan_tci = 0;
}
- status = netdev_start_xmit(skb, dev);
- if (status == NETDEV_TX_OK)
- txq_trans_update(txq);
+ status = netdev_start_xmit(skb, dev, txq);
out:
return status;
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index d81b540..34bd2ff 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3335,11 +3335,10 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
goto unlock;
}
atomic_inc(&(pkt_dev->skb->users));
- ret = netdev_start_xmit(pkt_dev->skb, odev);
+ ret = netdev_start_xmit(pkt_dev->skb, odev, txq);
switch (ret) {
case NETDEV_TX_OK:
- txq_trans_update(txq);
pkt_dev->last_ok = 1;
pkt_dev->sofar++;
pkt_dev->seq_num++;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index b7a7f5a..fe305a0 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -258,11 +258,8 @@ static int packet_direct_xmit(struct sk_buff *skb)
local_bh_disable();
HARD_TX_LOCK(dev, txq, smp_processor_id());
- if (!netif_xmit_frozen_or_drv_stopped(txq)) {
- ret = netdev_start_xmit(skb, dev);
- if (ret == NETDEV_TX_OK)
- txq_trans_update(txq);
- }
+ if (!netif_xmit_frozen_or_drv_stopped(txq))
+ ret = netdev_start_xmit(skb, dev, txq);
HARD_TX_UNLOCK(dev, txq);
local_bh_enable();
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 64cd93c..193dc2c 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -316,8 +316,7 @@ restart:
unsigned int length = qdisc_pkt_len(skb);
if (!netif_xmit_frozen_or_stopped(slave_txq) &&
- netdev_start_xmit(skb, slave) == NETDEV_TX_OK) {
- txq_trans_update(slave_txq);
+ netdev_start_xmit(skb, slave, slave_txq) == NETDEV_TX_OK) {
__netif_tx_unlock(slave_txq);
master->slaves = NEXT_SLAVE(q);
netif_wake_queue(dev);
--
1.7.11.7
--
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