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| author |   Tonghao Zhang <xiangxia.m.yue@gmail.com> | 2019-11-01 22:23:45 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-11-03 17:18:03 -0800 |
| commit | 04b7d136d015f220b1003e6c573834658d507a31 (patch) | |
| tree | cc22e3309f1c05eeb3b125f001ce5db6b8f3ad79 /net/openvswitch/datapath.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next (diff) | |
| download | linux-dev-04b7d136d015f220b1003e6c573834658d507a31.tar.xz linux-dev-04b7d136d015f220b1003e6c573834658d507a31.zip | |
net: openvswitch: add flow-mask cache for performance
The idea of this optimization comes from a patch which
is committed in 2014, openvswitch community. The author
is Pravin B Shelar. In order to get high performance, I
implement it again. Later patches will use it.
Pravin B Shelar, says:
| On every packet OVS needs to lookup flow-table with every
| mask until it finds a match. The packet flow-key is first
| masked with mask in the list and then the masked key is
| looked up in flow-table. Therefore number of masks can
| affect packet processing performance.
Link: https://github.com/openvswitch/ovs/commit/5604935e4e1cbc16611d2d97f50b717aa31e8ec5
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Tested-by: Greg Rose <gvrose8192@gmail.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch/datapath.c')
| -rw-r--r-- | net/openvswitch/datapath.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index d8c364d637b1..24cb73e62f55 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -227,7 +227,8 @@ void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key) stats = this_cpu_ptr(dp->stats_percpu); /* Look up flow. */ - flow = ovs_flow_tbl_lookup_stats(&dp->table, key, &n_mask_hit); + flow = ovs_flow_tbl_lookup_stats(&dp->table, key, skb_get_hash(skb), + &n_mask_hit); if (unlikely(!flow)) { struct dp_upcall_info upcall; |