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openvswitch: Mega flow implementation

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Add wildcarded flow support in kernel datapath.

Wildcarded flow can improve OVS flow set up performance by avoid sending
matching new flows to the user space program. The exact performance boost
will largely dependent on wildcarded flow hit rate.

In case all new flows hits wildcard flows, the flow set up rate is
within 5% of that of linux bridge module.

Pravin has made significant contributions to this patch. Including API
clean ups and bug fixes.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Andy Zhou 2013-08-07 20:01:00 -07:00 • committed by Jesse Gross
parent 3fa34de678
commit 03f0d916aa
7 changed files with 1190 additions and 532 deletions
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6
net/openvswitch/actions.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2007-2012 Nicira, Inc.
* Copyright (c) 2007-2013 Nicira, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
@ -376,8 +376,10 @@ static int output_userspace(struct datapath *dp, struct sk_buff *skb,
const struct nlattr *a;
int rem;
BUG_ON(!OVS_CB(skb)->pkt_key);
upcall.cmd = OVS_PACKET_CMD_ACTION;
upcall.key = &OVS_CB(skb)->flow->key;
upcall.key = OVS_CB(skb)->pkt_key;
upcall.userdata = NULL;
upcall.portid = 0;