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authorPaolo Abeni <pabeni@redhat.com>2019-03-20 11:02:05 +0100
committerDavid S. Miller <davem@davemloft.net>2019-03-20 11:18:55 -0700
commitb71b5837f8711dbc4bc0424cb5c75e5921be055c (patch)
tree4a731ba20e46226c135ae28213de18152338a2dd /net/core/dev.c
parentnet: dev: rename queue selection helpers. (diff)
downloadlinux-dev-b71b5837f8711dbc4bc0424cb5c75e5921be055c.tar.xz
linux-dev-b71b5837f8711dbc4bc0424cb5c75e5921be055c.zip
packet: rework packet_pick_tx_queue() to use common code selection
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> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
-rw-r--r--net/core/dev.c5
1 files changed, 3 insertions, 2 deletions
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,