[RFC V3 PATCH 24/26] net/netpolicy: optimize for queue pair
From: <hidden>
Date: 2016-09-12 14:57:01
Also in:
lkml
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Kan Liang <redacted> 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 <redacted> --- 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