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Date: Sun, 17 Jul 2016 23:56:16 -0700 From: kan.liang@...el.com To: davem@...emloft.net, linux-kernel@...r.kernel.org, intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org Cc: jeffrey.t.kirsher@...el.com, mingo@...hat.com, peterz@...radead.org, kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org, kaber@...sh.net, akpm@...ux-foundation.org, keescook@...omium.org, viro@...iv.linux.org.uk, gorcunov@...nvz.org, john.stultz@...aro.org, aduyck@...antis.com, ben@...adent.org.uk, decot@...glers.com, jesse.brandeburg@...el.com, andi@...stfloor.org, Kan Liang <kan.liang@...el.com> Subject: [RFC PATCH 22/30] net/netpolicy: set tx queues according to policy From: Kan Liang <kan.liang@...el.com> When the device tries to transmit a buffer, netdev_pick_tx is called to find the available tx queues. This patch checks the per socket net policy of the binding socket of the buffer. If net policy is set, it picks up the assigned tx queue from net policy module, and redirect the traffic to the assigned queue. Signed-off-by: Kan Liang <kan.liang@...el.com> --- net/core/dev.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/net/core/dev.c b/net/core/dev.c index 7894e40..6108e3b 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3266,6 +3266,7 @@ struct netdev_queue *netdev_pick_tx(struct net_device *dev, void *accel_priv) { int queue_index = 0; + struct sock *sk = skb->sk; #ifdef CONFIG_XPS u32 sender_cpu = skb->sender_cpu - 1; @@ -3279,8 +3280,21 @@ struct netdev_queue *netdev_pick_tx(struct net_device *dev, if (ops->ndo_select_queue) queue_index = ops->ndo_select_queue(dev, skb, accel_priv, __netdev_pick_tx); - else - queue_index = __netdev_pick_tx(dev, skb); + else { +#ifdef CONFIG_NETPOLICY + queue_index = -1; + if (sk && (sk->sk_netpolicy.policy > NET_POLICY_NONE)) { + /* There is no device bind to socket when setting policy + * Assign the dev now. + */ + if (!sk->sk_netpolicy.dev) + sk->sk_netpolicy.dev = dev; + queue_index = netpolicy_pick_queue(&sk->sk_netpolicy, false); + } + if (queue_index < 0) +#endif + queue_index = __netdev_pick_tx(dev, skb); + } if (!accel_priv) queue_index = netdev_cap_txqueue(dev, queue_index); -- 2.5.5
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