* [PATCH net-next v2 0/3] net: refactor ndo_select_queue()
@ 2019-03-20 10:02 Paolo Abeni
2019-03-20 10:02 ` [PATCH net-next v2 1/3] net: dev: rename queue selection helpers Paolo Abeni
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: Paolo Abeni @ 2019-03-20 10:02 UTC (permalink / raw)
To: netdev
Cc: Mike Marciniszyn, Doug Ledford, Jay Vosburgh, David S. Miller,
Saeed Bishara, Florian Fainelli, Ariel Elior, Vishal Kulkarni,
Jeff Kirsher, Salil Mehta, Tariq Toukan, K. Y. Srinivasan,
Kalle Valo, Wei Liu, Johannes Berg, Willem de Bruijn,
Eric Dumazet
Currently, on most devices implementing ndo_select_queue(), we get 2
indirect calls per xmit packet, at least in some scenarios.
We can avoid one of such indirect calls refactoring the ndo_select_queue()
usage so that we don't need anymore the 'fallback' argument.
The first patch renames a helper used later as a public API, the second one
changes the af packet implementation so that it uses the common infrastructure
to select the xmit queue, and the second patch drops the now unneeded argument
from ndo_select_queue().
Alternatively we could use the INDIRECT_CALL_WRAPPER infrastructure to avoid
the fallback indirect call in the common case, but this solution allows also
for some code cleanup.
v1 -> v2:
- renamed select queue helpers, as per Eric's and David's suggestions
Paolo Abeni (3):
net: dev: rename queue selection helpers.
packet: rework packet_pick_tx_queue() to use common code selection
net: remove 'fallback' argument from dev->ndo_select_queue()
drivers/infiniband/hw/hfi1/vnic_main.c | 3 +--
.../infiniband/ulp/opa_vnic/opa_vnic_netdev.c | 6 ++---
drivers/net/bonding/bond_main.c | 3 +--
drivers/net/ethernet/amazon/ena/ena_netdev.c | 5 ++--
drivers/net/ethernet/broadcom/bcmsysport.c | 7 +++--
.../net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 5 ++--
.../net/ethernet/broadcom/bnx2x/bnx2x_cmn.h | 3 +--
.../net/ethernet/chelsio/cxgb4/cxgb4_main.c | 5 ++--
drivers/net/ethernet/hisilicon/hns/hns_enet.c | 5 ++--
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 5 ++--
drivers/net/ethernet/mellanox/mlx4/en_tx.c | 7 +++--
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 3 +--
drivers/net/ethernet/mellanox/mlx5/core/en.h | 3 +--
.../net/ethernet/mellanox/mlx5/core/en_tx.c | 5 ++--
drivers/net/ethernet/qlogic/qede/qede.h | 3 +--
drivers/net/ethernet/qlogic/qede/qede_fp.c | 5 ++--
drivers/net/ethernet/renesas/ravb_main.c | 3 +--
drivers/net/ethernet/sun/ldmvsw.c | 3 +--
drivers/net/ethernet/sun/sunvnet.c | 3 +--
drivers/net/hyperv/netvsc_drv.c | 10 +++----
drivers/net/net_failover.c | 8 +++---
drivers/net/team/team.c | 3 +--
drivers/net/tun.c | 3 +--
drivers/net/wireless/marvell/mwifiex/main.c | 3 +--
drivers/net/xen-netback/interface.c | 6 ++---
drivers/net/xen-netfront.c | 3 +--
drivers/staging/rtl8188eu/os_dep/os_intfs.c | 3 +--
drivers/staging/rtl8723bs/os_dep/os_intfs.c | 3 +--
include/linux/netdevice.h | 20 +++++++-------
net/core/dev.c | 26 +++++++++----------
net/core/netpoll.c | 2 +-
net/mac80211/iface.c | 6 ++---
net/packet/af_packet.c | 16 +++++-------
net/xfrm/xfrm_device.c | 2 +-
34 files changed, 79 insertions(+), 117 deletions(-)
--
2.20.1
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH net-next v2 1/3] net: dev: rename queue selection helpers.
2019-03-20 10:02 [PATCH net-next v2 0/3] net: refactor ndo_select_queue() Paolo Abeni
@ 2019-03-20 10:02 ` Paolo Abeni
2019-03-20 10:02 ` [PATCH net-next v2 2/3] packet: rework packet_pick_tx_queue() to use common code selection Paolo Abeni
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Paolo Abeni @ 2019-03-20 10:02 UTC (permalink / raw)
To: netdev
Cc: Mike Marciniszyn, Doug Ledford, Jay Vosburgh, David S. Miller,
Saeed Bishara, Florian Fainelli, Ariel Elior, Vishal Kulkarni,
Jeff Kirsher, Salil Mehta, Tariq Toukan, K. Y. Srinivasan,
Kalle Valo, Wei Liu, Johannes Berg, Willem de Bruijn,
Eric Dumazet
With the following patches, we are going to use __netdev_pick_tx() in
many modules. Rename it to netdev_pick_tx(), to make it clear is
a public API.
Also rename the existing netdev_pick_tx() to netdev_core_pick_tx(),
to avoid name clashes.
Suggested-by: Eric Dumazet <edumazet@google.com>
Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
include/linux/netdevice.h | 6 +++---
net/core/dev.c | 18 +++++++++---------
net/core/netpoll.c | 2 +-
net/xfrm/xfrm_device.c | 2 +-
4 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 26f69cf763f4..57cd2bdd9f78 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2152,9 +2152,9 @@ static inline void netdev_for_each_tx_queue(struct net_device *dev,
&qdisc_xmit_lock_key); \
}
-struct netdev_queue *netdev_pick_tx(struct net_device *dev,
- struct sk_buff *skb,
- struct net_device *sb_dev);
+struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
+ struct sk_buff *skb,
+ struct net_device *sb_dev);
/* returns the headroom that the master device needs to take in account
* when forwarding to this dev
diff --git a/net/core/dev.c b/net/core/dev.c
index 2b67f2aa59dd..5dd3e3f7dd12 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3704,8 +3704,8 @@ u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb,
}
EXPORT_SYMBOL(dev_pick_tx_cpu_id);
-static u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev)
+static u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev)
{
struct sock *sk = skb->sk;
int queue_index = sk_tx_queue_get(sk);
@@ -3730,9 +3730,9 @@ static u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
return queue_index;
}
-struct netdev_queue *netdev_pick_tx(struct net_device *dev,
- struct sk_buff *skb,
- struct net_device *sb_dev)
+struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
+ struct sk_buff *skb,
+ struct net_device *sb_dev)
{
int queue_index = 0;
@@ -3748,9 +3748,9 @@ struct netdev_queue *netdev_pick_tx(struct net_device *dev,
if (ops->ndo_select_queue)
queue_index = ops->ndo_select_queue(dev, skb, sb_dev,
- __netdev_pick_tx);
+ netdev_pick_tx);
else
- queue_index = __netdev_pick_tx(dev, skb, sb_dev);
+ queue_index = netdev_pick_tx(dev, skb, sb_dev);
queue_index = netdev_cap_txqueue(dev, queue_index);
}
@@ -3824,7 +3824,7 @@ static int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev)
else
skb_dst_force(skb);
- txq = netdev_pick_tx(dev, skb, sb_dev);
+ txq = netdev_core_pick_tx(dev, skb, sb_dev);
q = rcu_dereference_bh(txq->qdisc);
trace_net_dev_queue(skb);
@@ -4429,7 +4429,7 @@ void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog)
bool free_skb = true;
int cpu, rc;
- txq = netdev_pick_tx(dev, skb, NULL);
+ txq = netdev_core_pick_tx(dev, skb, NULL);
cpu = smp_processor_id();
HARD_TX_LOCK(dev, txq, cpu);
if (!netif_xmit_stopped(txq)) {
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 361aabffb8c0..e365e8fb1c40 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -323,7 +323,7 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
if (skb_queue_len(&npinfo->txq) == 0 && !netpoll_owner_active(dev)) {
struct netdev_queue *txq;
- txq = netdev_pick_tx(dev, skb, NULL);
+ txq = netdev_core_pick_tx(dev, skb, NULL);
/* try until next clock tick */
for (tries = jiffies_to_usecs(1)/USEC_PER_POLL;
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index b8736f56e7f7..2db1626557c5 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -247,7 +247,7 @@ void xfrm_dev_resume(struct sk_buff *skb)
unsigned long flags;
rcu_read_lock();
- txq = netdev_pick_tx(dev, skb, NULL);
+ txq = netdev_core_pick_tx(dev, skb, NULL);
HARD_TX_LOCK(dev, txq, smp_processor_id());
if (!netif_xmit_frozen_or_stopped(txq))
--
2.20.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH net-next v2 2/3] packet: rework packet_pick_tx_queue() to use common code selection
2019-03-20 10:02 [PATCH net-next v2 0/3] net: refactor ndo_select_queue() Paolo Abeni
2019-03-20 10:02 ` [PATCH net-next v2 1/3] net: dev: rename queue selection helpers Paolo Abeni
@ 2019-03-20 10:02 ` Paolo Abeni
2019-03-20 10:02 ` [PATCH net-next v2 3/3] net: remove 'fallback' argument from dev->ndo_select_queue() Paolo Abeni
2019-03-20 18:19 ` [PATCH net-next v2 0/3] net: refactor ndo_select_queue() David Miller
3 siblings, 0 replies; 5+ messages in thread
From: Paolo Abeni @ 2019-03-20 10:02 UTC (permalink / raw)
To: netdev
Cc: Mike Marciniszyn, Doug Ledford, Jay Vosburgh, David S. Miller,
Saeed Bishara, Florian Fainelli, Ariel Elior, Vishal Kulkarni,
Jeff Kirsher, Salil Mehta, Tariq Toukan, K. Y. Srinivasan,
Kalle Valo, Wei Liu, Johannes Berg, Willem de Bruijn,
Eric Dumazet
Currently packet_pick_tx_queue() is the only caller of
ndo_select_queue() using a fallback argument other than
netdev_pick_tx.
Leveraging rx queue, we can obtain a similar queue selection
behavior using core helpers. After this change, ndo_select_queue()
is always invoked with netdev_pick_tx() as fallback.
We can change ndo_select_queue() signature in a followup patch,
dropping an indirect call per transmitted packet in some scenarios
(e.g. TCP syn and XDP generic xmit)
This changes slightly how af packet queue selection happens when
PACKET_QDISC_BYPASS is set. It's now more similar to plan dev_queue_xmit()
tacking in account both XPS and TC mapping.
v1 -> v2:
- rebased after helper name change
RFC -> v1:
- initialize sender_cpu to the expected value
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
include/linux/netdevice.h | 2 ++
net/core/dev.c | 5 +++--
net/packet/af_packet.c | 15 +++++++--------
3 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 57cd2bdd9f78..0ff28db4239f 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2152,6 +2152,8 @@ static inline void netdev_for_each_tx_queue(struct net_device *dev,
&qdisc_xmit_lock_key); \
}
+u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev);
struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
struct sk_buff *skb,
struct net_device *sb_dev);
diff --git a/net/core/dev.c b/net/core/dev.c
index 5dd3e3f7dd12..1a76b4fe9b97 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3704,8 +3704,8 @@ u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb,
}
EXPORT_SYMBOL(dev_pick_tx_cpu_id);
-static u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev)
+u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev)
{
struct sock *sk = skb->sk;
int queue_index = sk_tx_queue_get(sk);
@@ -3729,6 +3729,7 @@ static u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
return queue_index;
}
+EXPORT_SYMBOL(netdev_pick_tx);
struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
struct sk_buff *skb,
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 323655a25674..a8809dc0e1ab 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -275,24 +275,23 @@ static bool packet_use_direct_xmit(const struct packet_sock *po)
return po->xmit == packet_direct_xmit;
}
-static u16 __packet_pick_tx_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev)
-{
- return dev_pick_tx_cpu_id(dev, skb, sb_dev, NULL);
-}
-
static u16 packet_pick_tx_queue(struct sk_buff *skb)
{
struct net_device *dev = skb->dev;
const struct net_device_ops *ops = dev->netdev_ops;
+ int cpu = raw_smp_processor_id();
u16 queue_index;
+#ifdef CONFIG_XPS
+ skb->sender_cpu = cpu + 1;
+#endif
+ skb_record_rx_queue(skb, cpu % dev->real_num_tx_queues);
if (ops->ndo_select_queue) {
queue_index = ops->ndo_select_queue(dev, skb, NULL,
- __packet_pick_tx_queue);
+ netdev_pick_tx);
queue_index = netdev_cap_txqueue(dev, queue_index);
} else {
- queue_index = __packet_pick_tx_queue(dev, skb, NULL);
+ queue_index = netdev_pick_tx(dev, skb, NULL);
}
return queue_index;
--
2.20.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH net-next v2 3/3] net: remove 'fallback' argument from dev->ndo_select_queue()
2019-03-20 10:02 [PATCH net-next v2 0/3] net: refactor ndo_select_queue() Paolo Abeni
2019-03-20 10:02 ` [PATCH net-next v2 1/3] net: dev: rename queue selection helpers Paolo Abeni
2019-03-20 10:02 ` [PATCH net-next v2 2/3] packet: rework packet_pick_tx_queue() to use common code selection Paolo Abeni
@ 2019-03-20 10:02 ` Paolo Abeni
2019-03-20 18:19 ` [PATCH net-next v2 0/3] net: refactor ndo_select_queue() David Miller
3 siblings, 0 replies; 5+ messages in thread
From: Paolo Abeni @ 2019-03-20 10:02 UTC (permalink / raw)
To: netdev
Cc: Mike Marciniszyn, Doug Ledford, Jay Vosburgh, David S. Miller,
Saeed Bishara, Florian Fainelli, Ariel Elior, Vishal Kulkarni,
Jeff Kirsher, Salil Mehta, Tariq Toukan, K. Y. Srinivasan,
Kalle Valo, Wei Liu, Johannes Berg, Willem de Bruijn,
Eric Dumazet
After the previous patch, all the callers of ndo_select_queue()
provide as a 'fallback' argument netdev_pick_tx.
The only exceptions are nested calls to ndo_select_queue(),
which pass down the 'fallback' available in the current scope
- still netdev_pick_tx.
We can drop such argument and replace fallback() invocation with
netdev_pick_tx(). This avoids an indirect call per xmit packet
in some scenarios (TCP syn, UDP unconnected, XDP generic, pktgen)
with device drivers implementing such ndo. It also clean the code
a bit.
Tested with ixgbe and CONFIG_FCOE=m
With pktgen using queue xmit:
threads vanilla patched
(kpps) (kpps)
1 2334 2428
2 4166 4278
4 7895 8100
v1 -> v2:
- rebased after helper's name change
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/infiniband/hw/hfi1/vnic_main.c | 3 +--
drivers/infiniband/ulp/opa_vnic/opa_vnic_netdev.c | 6 ++----
drivers/net/bonding/bond_main.c | 3 +--
drivers/net/ethernet/amazon/ena/ena_netdev.c | 5 ++---
drivers/net/ethernet/broadcom/bcmsysport.c | 7 +++----
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 5 ++---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h | 3 +--
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 5 ++---
drivers/net/ethernet/hisilicon/hns/hns_enet.c | 5 ++---
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 5 ++---
drivers/net/ethernet/mellanox/mlx4/en_tx.c | 7 +++----
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 3 +--
drivers/net/ethernet/mellanox/mlx5/core/en.h | 3 +--
drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 5 ++---
drivers/net/ethernet/qlogic/qede/qede.h | 3 +--
drivers/net/ethernet/qlogic/qede/qede_fp.c | 5 ++---
drivers/net/ethernet/renesas/ravb_main.c | 3 +--
drivers/net/ethernet/sun/ldmvsw.c | 3 +--
drivers/net/ethernet/sun/sunvnet.c | 3 +--
drivers/net/hyperv/netvsc_drv.c | 10 ++++------
drivers/net/net_failover.c | 8 +++-----
drivers/net/team/team.c | 3 +--
drivers/net/tun.c | 3 +--
drivers/net/wireless/marvell/mwifiex/main.c | 3 +--
drivers/net/xen-netback/interface.c | 6 +++---
drivers/net/xen-netfront.c | 3 +--
drivers/staging/rtl8188eu/os_dep/os_intfs.c | 3 +--
drivers/staging/rtl8723bs/os_dep/os_intfs.c | 3 +--
include/linux/netdevice.h | 12 ++++--------
net/core/dev.c | 9 +++------
net/mac80211/iface.c | 6 ++----
net/packet/af_packet.c | 3 +--
32 files changed, 57 insertions(+), 97 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/vnic_main.c b/drivers/infiniband/hw/hfi1/vnic_main.c
index a922db58be14..2b07032dbdda 100644
--- a/drivers/infiniband/hw/hfi1/vnic_main.c
+++ b/drivers/infiniband/hw/hfi1/vnic_main.c
@@ -423,8 +423,7 @@ static netdev_tx_t hfi1_netdev_start_xmit(struct sk_buff *skb,
static u16 hfi1_vnic_select_queue(struct net_device *netdev,
struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct hfi1_vnic_vport_info *vinfo = opa_vnic_dev_priv(netdev);
struct opa_vnic_skb_mdata *mdata;
diff --git a/drivers/infiniband/ulp/opa_vnic/opa_vnic_netdev.c b/drivers/infiniband/ulp/opa_vnic/opa_vnic_netdev.c
index ae70cd18903e..aeff68f582d3 100644
--- a/drivers/infiniband/ulp/opa_vnic/opa_vnic_netdev.c
+++ b/drivers/infiniband/ulp/opa_vnic/opa_vnic_netdev.c
@@ -95,8 +95,7 @@ static netdev_tx_t opa_netdev_start_xmit(struct sk_buff *skb,
}
static u16 opa_vnic_select_queue(struct net_device *netdev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
struct opa_vnic_skb_mdata *mdata;
@@ -106,8 +105,7 @@ static u16 opa_vnic_select_queue(struct net_device *netdev, struct sk_buff *skb,
mdata = skb_push(skb, sizeof(*mdata));
mdata->entropy = opa_vnic_calc_entropy(skb);
mdata->vl = opa_vnic_get_vl(adapter, skb);
- rc = adapter->rn_ops->ndo_select_queue(netdev, skb,
- sb_dev, fallback);
+ rc = adapter->rn_ops->ndo_select_queue(netdev, skb, sb_dev);
skb_pull(skb, sizeof(*mdata));
return rc;
}
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index b59708c35faf..8ddbada9e281 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4114,8 +4114,7 @@ static inline int bond_slave_override(struct bonding *bond,
static u16 bond_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
/* This helper function exists to help dev_pick_tx get the correct
* destination queue. Using a helper function skips a call to
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index a6eacf2099c3..71c8cac6e44e 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -2258,8 +2258,7 @@ static netdev_tx_t ena_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
static u16 ena_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
u16 qid;
/* we suspect that this is good for in--kernel network services that
@@ -2269,7 +2268,7 @@ static u16 ena_select_queue(struct net_device *dev, struct sk_buff *skb,
if (skb_rx_queue_recorded(skb))
qid = skb_get_rx_queue(skb);
else
- qid = fallback(dev, skb, NULL);
+ qid = netdev_pick_tx(dev, skb, NULL);
return qid;
}
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index bc3ac369cbe3..a9d3d26a7202 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -2274,8 +2274,7 @@ static const struct ethtool_ops bcm_sysport_ethtool_ops = {
};
static u16 bcm_sysport_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct bcm_sysport_priv *priv = netdev_priv(dev);
u16 queue = skb_get_queue_mapping(skb);
@@ -2283,7 +2282,7 @@ static u16 bcm_sysport_select_queue(struct net_device *dev, struct sk_buff *skb,
unsigned int q, port;
if (!netdev_uses_dsa(dev))
- return fallback(dev, skb, NULL);
+ return netdev_pick_tx(dev, skb, NULL);
/* DSA tagging layer will have configured the correct queue */
q = BRCM_TAG_GET_QUEUE(queue);
@@ -2291,7 +2290,7 @@ static u16 bcm_sysport_select_queue(struct net_device *dev, struct sk_buff *skb,
tx_ring = priv->ring_map[q + port * priv->per_port_num_tx_queues];
if (unlikely(!tx_ring))
- return fallback(dev, skb, NULL);
+ return netdev_pick_tx(dev, skb, NULL);
return tx_ring->index;
}
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index ecb1bd7eb508..6012fe61735e 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -1909,8 +1909,7 @@ void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw)
}
u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct bnx2x *bp = netdev_priv(dev);
@@ -1932,7 +1931,7 @@ u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb,
}
/* select a non-FCoE queue */
- return fallback(dev, skb, NULL) %
+ return netdev_pick_tx(dev, skb, NULL) %
(BNX2X_NUM_ETH_QUEUES(bp) * bp->max_cos);
}
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
index 2462e7aa0c5d..7f8df08a7a4c 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
@@ -498,8 +498,7 @@ int bnx2x_set_vf_spoofchk(struct net_device *dev, int idx, bool val);
/* select_queue callback */
u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback);
+ struct net_device *sb_dev);
static inline void bnx2x_update_rx_prod(struct bnx2x *bp,
struct bnx2x_fastpath *fp,
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 89179e316687..3339f1f4bcdd 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -979,8 +979,7 @@ static int setup_sge_queues(struct adapter *adap)
}
static u16 cxgb_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
int txq;
@@ -1022,7 +1021,7 @@ static u16 cxgb_select_queue(struct net_device *dev, struct sk_buff *skb,
return txq;
}
- return fallback(dev, skb, NULL) % dev->real_num_tx_queues;
+ return netdev_pick_tx(dev, skb, NULL) % dev->real_num_tx_queues;
}
static int closest_timer(const struct sge *s, int time)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 60e7d7ae3787..e37a0ca0db89 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -1964,8 +1964,7 @@ static void hns_nic_get_stats64(struct net_device *ndev,
static u16
hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
struct hns_nic_priv *priv = netdev_priv(ndev);
@@ -1975,7 +1974,7 @@ hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb,
is_multicast_ether_addr(eth_hdr->h_dest))
return 0;
else
- return fallback(ndev, skb, NULL);
+ return netdev_pick_tx(ndev, skb, NULL);
}
static const struct net_device_ops hns_nic_netdev_ops = {
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index e100054a3765..fc7c31902a86 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -8483,8 +8483,7 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
#ifdef IXGBE_FCOE
static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct ixgbe_adapter *adapter;
struct ixgbe_ring_feature *f;
@@ -8514,7 +8513,7 @@ static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb,
break;
/* fall through */
default:
- return fallback(dev, skb, sb_dev);
+ return netdev_pick_tx(dev, skb, sb_dev);
}
f = &adapter->ring_feature[RING_F_FCOE];
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
index 2cbd2bd7c67c..fba54fb06e18 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
@@ -685,16 +685,15 @@ static void build_inline_wqe(struct mlx4_en_tx_desc *tx_desc,
}
u16 mlx4_en_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
u16 rings_p_up = priv->num_tx_rings_p_up;
if (netdev_get_num_tc(dev))
- return fallback(dev, skb, NULL);
+ return netdev_pick_tx(dev, skb, NULL);
- return fallback(dev, skb, NULL) % rings_p_up;
+ return netdev_pick_tx(dev, skb, NULL) % rings_p_up;
}
static void mlx4_bf_copy(void __iomem *dst, const void *src,
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index 8137454e2534..630f15977f09 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -698,8 +698,7 @@ void mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
void mlx4_en_tx_irq(struct mlx4_cq *mcq);
u16 mlx4_en_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback);
+ struct net_device *sb_dev);
netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev);
netdev_tx_t mlx4_en_xmit_frame(struct mlx4_en_rx_ring *rx_ring,
struct mlx4_en_rx_alloc *frame,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 71c65cc17904..5c2e3276d9cc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -769,8 +769,7 @@ struct mlx5e_profile {
void mlx5e_build_ptys2ethtool_map(void);
u16 mlx5e_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback);
+ struct net_device *sb_dev);
netdev_tx_t mlx5e_xmit(struct sk_buff *skb, struct net_device *dev);
netdev_tx_t mlx5e_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
struct mlx5e_tx_wqe *wqe, u16 pi);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
index 25a8f8260c14..ce1406bb1512 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
@@ -110,11 +110,10 @@ static inline int mlx5e_get_dscp_up(struct mlx5e_priv *priv, struct sk_buff *skb
#endif
u16 mlx5e_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
+ int channel_ix = netdev_pick_tx(dev, skb, NULL);
struct mlx5e_priv *priv = netdev_priv(dev);
- int channel_ix = fallback(dev, skb, NULL);
u16 num_channels;
int up = 0;
diff --git a/drivers/net/ethernet/qlogic/qede/qede.h b/drivers/net/ethernet/qlogic/qede/qede.h
index 63a78162cfaf..92fe226980fd 100644
--- a/drivers/net/ethernet/qlogic/qede/qede.h
+++ b/drivers/net/ethernet/qlogic/qede/qede.h
@@ -498,8 +498,7 @@ struct qede_reload_args {
/* Datapath functions definition */
netdev_tx_t qede_start_xmit(struct sk_buff *skb, struct net_device *ndev);
u16 qede_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback);
+ struct net_device *sb_dev);
netdev_features_t qede_features_check(struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features);
diff --git a/drivers/net/ethernet/qlogic/qede/qede_fp.c b/drivers/net/ethernet/qlogic/qede/qede_fp.c
index 31b046e24565..c342b07e3a93 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_fp.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_fp.c
@@ -1696,8 +1696,7 @@ netdev_tx_t qede_start_xmit(struct sk_buff *skb, struct net_device *ndev)
}
u16 qede_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct qede_dev *edev = netdev_priv(dev);
int total_txq;
@@ -1705,7 +1704,7 @@ u16 qede_select_queue(struct net_device *dev, struct sk_buff *skb,
total_txq = QEDE_TSS_COUNT(edev) * edev->dev_info.num_tc;
return QEDE_TSS_COUNT(edev) ?
- fallback(dev, skb, NULL) % total_txq : 0;
+ netdev_pick_tx(dev, skb, NULL) % total_txq : 0;
}
/* 8B udp header + 8B base tunnel header + 32B option length */
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 8154b38c08f7..4f648394e645 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -1615,8 +1615,7 @@ static netdev_tx_t ravb_start_xmit(struct sk_buff *skb, struct net_device *ndev)
}
static u16 ravb_select_queue(struct net_device *ndev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
/* If skb needs TX timestamp, it is handled in network control queue */
return (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) ? RAVB_NC :
diff --git a/drivers/net/ethernet/sun/ldmvsw.c b/drivers/net/ethernet/sun/ldmvsw.c
index 644e42c181ee..01ea0d6f8819 100644
--- a/drivers/net/ethernet/sun/ldmvsw.c
+++ b/drivers/net/ethernet/sun/ldmvsw.c
@@ -101,8 +101,7 @@ static struct vnet_port *vsw_tx_port_find(struct sk_buff *skb,
}
static u16 vsw_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct vnet_port *port = netdev_priv(dev);
diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
index 590172818b92..96b883f965f6 100644
--- a/drivers/net/ethernet/sun/sunvnet.c
+++ b/drivers/net/ethernet/sun/sunvnet.c
@@ -234,8 +234,7 @@ static struct vnet_port *vnet_tx_port_find(struct sk_buff *skb,
}
static u16 vnet_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct vnet *vp = netdev_priv(dev);
struct vnet_port *port = __tx_port_find(vp, skb);
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index cf4897043e83..1a08679f90ce 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -308,7 +308,7 @@ static inline int netvsc_get_tx_queue(struct net_device *ndev,
* If a valid queue has already been assigned, then use that.
* Otherwise compute tx queue based on hash and the send table.
*
- * This is basically similar to default (__netdev_pick_tx) with the added step
+ * This is basically similar to default (netdev_pick_tx) with the added step
* of using the host send_table when no other queue has been assigned.
*
* TODO support XPS - but get_xps_queue not exported
@@ -331,8 +331,7 @@ static u16 netvsc_pick_tx(struct net_device *ndev, struct sk_buff *skb)
}
static u16 netvsc_select_queue(struct net_device *ndev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct net_device_context *ndc = netdev_priv(ndev);
struct net_device *vf_netdev;
@@ -344,10 +343,9 @@ static u16 netvsc_select_queue(struct net_device *ndev, struct sk_buff *skb,
const struct net_device_ops *vf_ops = vf_netdev->netdev_ops;
if (vf_ops->ndo_select_queue)
- txq = vf_ops->ndo_select_queue(vf_netdev, skb,
- sb_dev, fallback);
+ txq = vf_ops->ndo_select_queue(vf_netdev, skb, sb_dev);
else
- txq = fallback(vf_netdev, skb, NULL);
+ txq = netdev_pick_tx(vf_netdev, skb, NULL);
/* Record the queue selected by VF so that it can be
* used for common case where VF has more queues than
diff --git a/drivers/net/net_failover.c b/drivers/net/net_failover.c
index ed1166adaa2f..b16a1221d19b 100644
--- a/drivers/net/net_failover.c
+++ b/drivers/net/net_failover.c
@@ -115,8 +115,7 @@ static netdev_tx_t net_failover_start_xmit(struct sk_buff *skb,
static u16 net_failover_select_queue(struct net_device *dev,
struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct net_failover_info *nfo_info = netdev_priv(dev);
struct net_device *primary_dev;
@@ -127,10 +126,9 @@ static u16 net_failover_select_queue(struct net_device *dev,
const struct net_device_ops *ops = primary_dev->netdev_ops;
if (ops->ndo_select_queue)
- txq = ops->ndo_select_queue(primary_dev, skb,
- sb_dev, fallback);
+ txq = ops->ndo_select_queue(primary_dev, skb, sb_dev);
else
- txq = fallback(primary_dev, skb, NULL);
+ txq = netdev_pick_tx(primary_dev, skb, NULL);
qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index 6ed96fdfd96d..ee950aa48e3b 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -1691,8 +1691,7 @@ static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
}
static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
/*
* This helper function exists to help dev_pick_tx get the correct
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index e9ca1c088d0b..ef3b65514976 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -606,8 +606,7 @@ static u16 tun_ebpf_select_queue(struct tun_struct *tun, struct sk_buff *skb)
}
static u16 tun_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct tun_struct *tun = netdev_priv(dev);
u16 ret;
diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index 20cee5c397fb..f6da8edab7f1 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -1282,8 +1282,7 @@ static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
static u16
mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
skb->priority = cfg80211_classify8021d(skb, NULL);
return mwifiex_1d_to_wmm_queue[skb->priority];
diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c
index 6da12518e693..783198844dd7 100644
--- a/drivers/net/xen-netback/interface.c
+++ b/drivers/net/xen-netback/interface.c
@@ -148,8 +148,7 @@ void xenvif_wake_queue(struct xenvif_queue *queue)
}
static u16 xenvif_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct xenvif *vif = netdev_priv(dev);
unsigned int size = vif->hash.size;
@@ -162,7 +161,8 @@ static u16 xenvif_select_queue(struct net_device *dev, struct sk_buff *skb,
return 0;
if (vif->hash.alg == XEN_NETIF_CTRL_HASH_ALGORITHM_NONE)
- return fallback(dev, skb, NULL) % dev->real_num_tx_queues;
+ return netdev_pick_tx(dev, skb, NULL) %
+ dev->real_num_tx_queues;
xenvif_set_skb_hash(vif, skb);
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index c914c24f880b..80c30321de41 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -543,8 +543,7 @@ static int xennet_count_skb_slots(struct sk_buff *skb)
}
static u16 xennet_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
unsigned int num_queues = dev->real_num_tx_queues;
u32 hash;
diff --git a/drivers/staging/rtl8188eu/os_dep/os_intfs.c b/drivers/staging/rtl8188eu/os_dep/os_intfs.c
index 8dde5a40e253..2c088af44c8b 100644
--- a/drivers/staging/rtl8188eu/os_dep/os_intfs.c
+++ b/drivers/staging/rtl8188eu/os_dep/os_intfs.c
@@ -245,8 +245,7 @@ static unsigned int rtw_classify8021d(struct sk_buff *skb)
}
static u16 rtw_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct adapter *padapter = rtw_netdev_priv(dev);
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
diff --git a/drivers/staging/rtl8723bs/os_dep/os_intfs.c b/drivers/staging/rtl8723bs/os_dep/os_intfs.c
index 143e3f9b31aa..0a20a4e9e19a 100644
--- a/drivers/staging/rtl8723bs/os_dep/os_intfs.c
+++ b/drivers/staging/rtl8723bs/os_dep/os_intfs.c
@@ -404,8 +404,7 @@ static unsigned int rtw_classify8021d(struct sk_buff *skb)
static u16 rtw_select_queue(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct adapter *padapter = rtw_netdev_priv(dev);
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 0ff28db4239f..823762291ebf 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -986,8 +986,7 @@ struct devlink;
* those the driver believes to be appropriate.
*
* u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb,
- * struct net_device *sb_dev,
- * select_queue_fallback_t fallback);
+ * struct net_device *sb_dev);
* Called to decide which queue to use when device supports multiple
* transmit queues.
*
@@ -1268,8 +1267,7 @@ struct net_device_ops {
netdev_features_t features);
u16 (*ndo_select_queue)(struct net_device *dev,
struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback);
+ struct net_device *sb_dev);
void (*ndo_change_rx_flags)(struct net_device *dev,
int flags);
void (*ndo_set_rx_mode)(struct net_device *dev);
@@ -2641,11 +2639,9 @@ void dev_close_many(struct list_head *head, bool unlink);
void dev_disable_lro(struct net_device *dev);
int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb);
u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback);
+ struct net_device *sb_dev);
u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback);
+ struct net_device *sb_dev);
int dev_queue_xmit(struct sk_buff *skb);
int dev_queue_xmit_accel(struct sk_buff *skb, struct net_device *sb_dev);
int dev_direct_xmit(struct sk_buff *skb, u16 queue_id);
diff --git a/net/core/dev.c b/net/core/dev.c
index 1a76b4fe9b97..357111431ec9 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3689,16 +3689,14 @@ static int get_xps_queue(struct net_device *dev, struct net_device *sb_dev,
}
u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
return 0;
}
EXPORT_SYMBOL(dev_pick_tx_zero);
u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
return (u16)raw_smp_processor_id() % dev->real_num_tx_queues;
}
@@ -3748,8 +3746,7 @@ struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
const struct net_device_ops *ops = dev->netdev_ops;
if (ops->ndo_select_queue)
- queue_index = ops->ndo_select_queue(dev, skb, sb_dev,
- netdev_pick_tx);
+ queue_index = ops->ndo_select_queue(dev, skb, sb_dev);
else
queue_index = netdev_pick_tx(dev, skb, sb_dev);
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 4a6ff1482a9f..f0d97eba250b 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1133,8 +1133,7 @@ static void ieee80211_uninit(struct net_device *dev)
static u16 ieee80211_netdev_select_queue(struct net_device *dev,
struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb);
}
@@ -1179,8 +1178,7 @@ static const struct net_device_ops ieee80211_dataif_ops = {
static u16 ieee80211_monitor_select_queue(struct net_device *dev,
struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index a8809dc0e1ab..741953b42f44 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -287,8 +287,7 @@ static u16 packet_pick_tx_queue(struct sk_buff *skb)
#endif
skb_record_rx_queue(skb, cpu % dev->real_num_tx_queues);
if (ops->ndo_select_queue) {
- queue_index = ops->ndo_select_queue(dev, skb, NULL,
- netdev_pick_tx);
+ queue_index = ops->ndo_select_queue(dev, skb, NULL);
queue_index = netdev_cap_txqueue(dev, queue_index);
} else {
queue_index = netdev_pick_tx(dev, skb, NULL);
--
2.20.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH net-next v2 0/3] net: refactor ndo_select_queue()
2019-03-20 10:02 [PATCH net-next v2 0/3] net: refactor ndo_select_queue() Paolo Abeni
` (2 preceding siblings ...)
2019-03-20 10:02 ` [PATCH net-next v2 3/3] net: remove 'fallback' argument from dev->ndo_select_queue() Paolo Abeni
@ 2019-03-20 18:19 ` David Miller
3 siblings, 0 replies; 5+ messages in thread
From: David Miller @ 2019-03-20 18:19 UTC (permalink / raw)
To: pabeni
Cc: netdev, mike.marciniszyn, dledford, j.vosburgh, saeedb,
f.fainelli, aelior, vishal, jeffrey.t.kirsher, salil.mehta,
tariqt, kys, kvalo, wei.liu2, johannes, willemdebruijn.kernel,
eric.dumazet
From: Paolo Abeni <pabeni@redhat.com>
Date: Wed, 20 Mar 2019 11:02:03 +0100
> Currently, on most devices implementing ndo_select_queue(), we get 2
> indirect calls per xmit packet, at least in some scenarios.
>
> We can avoid one of such indirect calls refactoring the ndo_select_queue()
> usage so that we don't need anymore the 'fallback' argument.
>
> The first patch renames a helper used later as a public API, the second one
> changes the af packet implementation so that it uses the common infrastructure
> to select the xmit queue, and the second patch drops the now unneeded argument
> from ndo_select_queue().
>
> Alternatively we could use the INDIRECT_CALL_WRAPPER infrastructure to avoid
> the fallback indirect call in the common case, but this solution allows also
> for some code cleanup.
>
> v1 -> v2:
> - renamed select queue helpers, as per Eric's and David's suggestions
I like it, series applied.
Thanks Paolo.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2019-03-20 18:19 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-03-20 10:02 [PATCH net-next v2 0/3] net: refactor ndo_select_queue() Paolo Abeni
2019-03-20 10:02 ` [PATCH net-next v2 1/3] net: dev: rename queue selection helpers Paolo Abeni
2019-03-20 10:02 ` [PATCH net-next v2 2/3] packet: rework packet_pick_tx_queue() to use common code selection Paolo Abeni
2019-03-20 10:02 ` [PATCH net-next v2 3/3] net: remove 'fallback' argument from dev->ndo_select_queue() Paolo Abeni
2019-03-20 18:19 ` [PATCH net-next v2 0/3] net: refactor ndo_select_queue() David Miller
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