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| author | Aaron Conole <aconole@redhat.com> | 2023-06-09 16:59:55 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-06-12 11:46:30 +0300 |
| commit | e069ba07e6c7af69e119316bc87ff44869095f49 (patch) | |
| tree | 74f782414a9baa425b99d8c78bfef0c8b9f97da3 /include/uapi/linux/openvswitch.h | |
| parent | 65137877338149185d71d2bc1481693b78377e04 (diff) | |
| download | linux-e069ba07e6c7af69e119316bc87ff44869095f49.tar.xz | |
net: openvswitch: add support for l4 symmetric hashing
Since its introduction, the ovs module execute_hash action allowed
hash algorithms other than the skb->l4_hash to be used. However,
additional hash algorithms were not implemented. This means flows
requiring different hash distributions weren't able to use the
kernel datapath.
Now, introduce support for symmetric hashing algorithm as an
alternative hash supported by the ovs module using the flow
dissector.
Output of flow using l4_sym hash:
recirc_id(0),in_port(3),eth(),eth_type(0x0800),
ipv4(dst=64.0.0.0/192.0.0.0,proto=6,frag=no), packets:30473425,
bytes:45902883702, used:0.000s, flags:SP.,
actions:hash(sym_l4(0)),recirc(0xd)
Some performance testing with no GRO/GSO, two veths, single flow:
hash(l4(0)): 4.35 GBits/s
hash(l4_sym(0)): 4.24 GBits/s
Signed-off-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/openvswitch.h')
| -rw-r--r-- | include/uapi/linux/openvswitch.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h index c5d62ee82567..e94870e77ee9 100644 --- a/include/uapi/linux/openvswitch.h +++ b/include/uapi/linux/openvswitch.h @@ -765,6 +765,7 @@ struct ovs_action_push_vlan { */ enum ovs_hash_alg { OVS_HASH_ALG_L4, + OVS_HASH_ALG_SYM_L4, }; /* |