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Groups > linux.kernel > #1481388

[RFC V3 PATCH 24/26] net/netpolicy: optimize for queue pair

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From: Kan Liang <kan.liang@intel.com>

Some drivers like i40e driver does not support separate Tx and Rx queues
as channels. Using Rx queue to stand for the channels, if queue_pair is
set by driver.

Signed-off-by: Kan Liang <kan.liang@intel.com>
---
 include/linux/netpolicy.h | 1 +
 net/core/netpolicy.c      | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/include/linux/netpolicy.h b/include/linux/netpolicy.h
index 88f4f60..9b03b4d 100644
--- a/include/linux/netpolicy.h
+++ b/include/linux/netpolicy.h
@@ -83,6 +83,7 @@ struct netpolicy_info {
 	unsigned long avail_policy[BITS_TO_LONGS(NET_POLICY_MAX)];
 	bool irq_affinity;
 	bool has_mix_policy;
+	bool queue_pair;
 	/* cpu and queue mapping information */
 	struct netpolicy_sys_info	sys_info;
 	/* List of policy objects 0 rx 1 tx */
diff --git a/net/core/netpolicy.c b/net/core/netpolicy.c
index 2f55a14..84503a4 100644
--- a/net/core/netpolicy.c
+++ b/net/core/netpolicy.c
@@ -538,6 +538,9 @@ int netpolicy_pick_queue(struct netpolicy_instance *instance, bool is_rx)
 	if (!policy_validate(instance))
 		return -EINVAL;
 
+	if (dev->netpolicy->queue_pair)
+		is_rx = true;
+
 	/* fast path */
 	rcu_read_lock();
 	version = rcu_dereference(dev->netpolicy->sys_info.version)->major;
-- 
2.5.5

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[RFC V3 PATCH 00/26] Kernel NET policy kan.liang@intel.com - 2016-09-12 17:00 +0200
  [RFC V3 PATCH 26/26] Documentation/networking: Document NET policy kan.liang@intel.com - 2016-09-12 17:00 +0200
  [RFC V3 PATCH 05/26] net/netpolicy: create CPU and queue mapping kan.liang@intel.com - 2016-09-12 17:00 +0200
  [RFC V3 PATCH 22/26] net/netpolicy: set per task policy by proc kan.liang@intel.com - 2016-09-12 17:00 +0200
    Re: [RFC V3 PATCH 22/26] net/netpolicy: set per task policy by proc Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2016-09-12 19:10 +0200
  [RFC V3 PATCH 08/26] net/netpolicy: introduce NET policy object kan.liang@intel.com - 2016-09-12 17:00 +0200
  [RFC V3 PATCH 21/26] net/netpolicy: introduce per task net policy kan.liang@intel.com - 2016-09-12 17:00 +0200
  [RFC V3 PATCH 24/26] net/netpolicy: optimize for queue pair kan.liang@intel.com - 2016-09-12 17:00 +0200
  [RFC V3 PATCH 20/26] net/netpolicy: set Rx queues according to policy kan.liang@intel.com - 2016-09-12 17:00 +0200
  [RFC V3 PATCH 25/26] net/netpolicy: limit the total record number kan.liang@intel.com - 2016-09-12 17:00 +0200
  [RFC V3 PATCH 10/26] net/netpolicy: add three new NET policies kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 09/26] net/netpolicy: set NET policy by policy name kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 18/26] net/netpolicy: set tx queues according to policy kan.liang@intel.com - 2016-09-12 17:10 +0200
    Re: [RFC V3 PATCH 18/26] net/netpolicy: set tx queues according to policy Tom Herbert <tom@herbertland.com> - 2016-09-12 22:30 +0200
      RE: [RFC V3 PATCH 18/26] net/netpolicy: set tx queues according to  policy "Liang, Kan" <kan.liang@intel.com> - 2016-09-13 14:30 +0200
  [RFC V3 PATCH 02/26] net/netpolicy: init NET policy kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 01/26] net: introduce NET policy kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 14/26] net/netpolicy: handle channel changes kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 13/26] net/netpolicy: support CPU hotplug kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 11/26] net/netpolicy: add MIX policy kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 17/26] net/netpolicy: introduce netpolicy_pick_queue kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 03/26] net/netpolicy: get device queue irq information kan.liang@intel.com - 2016-09-12 17:10 +0200
    Re: [RFC V3 PATCH 03/26] net/netpolicy: get device queue irq  information Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2016-09-12 18:50 +0200
      RE: [RFC V3 PATCH 03/26] net/netpolicy: get device queue irq  information "Liang, Kan" <kan.liang@intel.com> - 2016-09-13 14:30 +0200
        Re: [RFC V3 PATCH 03/26] net/netpolicy: get device queue irq information Alexander Duyck <alexander.duyck@gmail.com> - 2016-09-13 15:20 +0200
          RE: [RFC V3 PATCH 03/26] net/netpolicy: get device queue irq  information "Liang, Kan" <kan.liang@intel.com> - 2016-09-13 15:30 +0200
  [RFC V3 PATCH 15/26] net/netpolicy: implement netpolicy register kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 19/26] net/netpolicy: tc bpf extension to pick Tx queue kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 12/26] net/netpolicy: NET device hotplug kan.liang@intel.com - 2016-09-12 17:10 +0200
  [RFC V3 PATCH 04/26] net/netpolicy: get CPU information kan.liang@intel.com - 2016-09-12 17:10 +0200
  Re: [RFC V3 PATCH 00/26] Kernel NET policy Florian Westphal <fw@strlen.de> - 2016-09-12 17:40 +0200
    Re: [RFC V3 PATCH 00/26] Kernel NET policy Cong Wang <xiyou.wangcong@gmail.com> - 2016-09-12 19:30 +0200
  Re: [RFC V3 PATCH 00/26] Kernel NET policy Eric Dumazet <eric.dumazet@gmail.com> - 2016-09-12 18:00 +0200
    Re: [RFC V3 PATCH 00/26] Kernel NET policy Stephen Hemminger <stephen@networkplumber.org> - 2016-09-19 22:40 +0200

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