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dpif-netdev/dpcls: Specialize more subtable signatures.

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This commit adds more subtables to be specialized. The traffic
pattern here being matched is VXLAN traffic subtables, which commonly
have (5,3), (9,1) and (9,4) subtable fingerprints.

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Flavio Leitner <fbl@sysclose.org>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>
This commit is contained in:
Harry van Haaren 2021-07-09 15:58:22 +00:00 committed by Ian Stokes
parent 47a2a8f413
commit 2100f0e517
3 changed files with 14 additions and 0 deletions
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2
NEWS
View File

@ -27,6 +27,8 @@ Post-v2.15.0
* Add a partial HWOL PMD statistic counting hits similar to existing
EMC/SMC/DPCLS stats.
* Enable AVX512 optimized DPCLS to search subtables with larger miniflows.
* Add more specialized DPCLS subtables to cover common rules, enhancing
the lookup performance.
- ovs-ctl:
* New option '--no-record-hostname' to disable hostname configuration
in ovsdb on startup.

6
lib/dpif-netdev-lookup-avx512-gather.c
View File

@ -314,6 +314,9 @@ avx512_lookup_impl(struct dpcls_subtable *subtable,
return avx512_lookup_impl(subtable, keys_map, keys, rules, U0, U1); \
} \
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(9, 4)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(9, 1)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(5, 3)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(5, 1)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(4, 1)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(4, 0)
@ -346,6 +349,9 @@ dpcls_subtable_avx512_gather_probe(uint32_t u0_bits, uint32_t u1_bits)
return NULL;
}
CHECK_LOOKUP_FUNCTION(9, 4);
CHECK_LOOKUP_FUNCTION(9, 1);
CHECK_LOOKUP_FUNCTION(5, 3);
CHECK_LOOKUP_FUNCTION(5, 1);
CHECK_LOOKUP_FUNCTION(4, 1);
CHECK_LOOKUP_FUNCTION(4, 0);

6
lib/dpif-netdev-lookup-generic.c
View File

@ -282,6 +282,9 @@ dpcls_subtable_lookup_generic(struct dpcls_subtable *subtable,
return lookup_generic_impl(subtable, keys_map, keys, rules, U0, U1); \
} \
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(9, 4)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(9, 1)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(5, 3)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(5, 1)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(4, 1)
DECLARE_OPTIMIZED_LOOKUP_FUNCTION(4, 0)
@ -303,6 +306,9 @@ dpcls_subtable_generic_probe(uint32_t u0_bits, uint32_t u1_bits)
{
dpcls_subtable_lookup_func f = NULL;
CHECK_LOOKUP_FUNCTION(9, 4);
CHECK_LOOKUP_FUNCTION(9, 1);
CHECK_LOOKUP_FUNCTION(5, 3);
CHECK_LOOKUP_FUNCTION(5, 1);
CHECK_LOOKUP_FUNCTION(4, 1);
CHECK_LOOKUP_FUNCTION(4, 0);