1) Add MH compile configuration and IP_VS_MH_TAB_INDEX for MH table
size in Kconfig
2) Add the setting for MH compile in Makefile
Signed-off-by: Inju Song <inju.song@xxxxxxxxxxxxx>
---
net/netfilter/ipvs/Kconfig | 37 +++++++++++++++++++++++++++++++++++++
net/netfilter/ipvs/Makefile | 1 +
2 files changed, 38 insertions(+)
diff --git a/net/netfilter/ipvs/Kconfig b/net/netfilter/ipvs/Kconfig
index b32fb0d..cad48d0 100644
--- a/net/netfilter/ipvs/Kconfig
+++ b/net/netfilter/ipvs/Kconfig
@@ -225,6 +225,25 @@ config IP_VS_SH
If you want to compile it in kernel, say Y. To compile it as a
module, choose M here. If unsure, say N.
+config IP_VS_MH
+ tristate "maglev hashing scheduling"
+ ---help---
+ The maglev consistent hashing scheduling algorithm provides the
+ Google's Maglev hashing algorithm as a IPVS scheduler. It assigns
+ network connections to the servers through looking up a statically
+ assigned special hash table called the lookup table. Maglev hashing
+ is to assign a preference list of all the lookup table positions
+ to each destination.
+
+ Through this operation, The maglev hashing gives an almost equal
+ share of the lookup table to each of the destinations and provides
+ minimal disruption by using the lookup table. When the set of
+ destinations changes, a connection will likely be sent to the same
+ destination as it was before.
+
+ If you want to compile it in kernel, say Y. To compile it as a
+ module, choose M here. If unsure, say N.
+
config IP_VS_SED
tristate "shortest expected delay scheduling"
---help---
@@ -266,6 +285,24 @@ config IP_VS_SH_TAB_BITS
needs to be large enough to effectively fit all the destinations
multiplied by their respective weights.
+comment 'IPVS MH scheduler'
+
+config IP_VS_MH_TAB_INDEX
+ int "IPVS maglev hashing table index of size (the prime numbers)"
+ range 8 17
+ default 12
+ ---help---
+ The maglev hashing scheduler maps source IPs to destinations
+ stored in a hash table. This table is assigned by a preference
+ list of the positions to each destination until all slots in
+ the table are filled. The index determines the prime for size of
+ the table as 251, 509, 1021, 2039, 4093, 8191, 16381, 32749,
+ 65521 or 131071. When using weights to allow destinations to
+ receive more connections, the table is assigned an amount
+ proportional to the weights specified. The table needs to be large
+ enough to effectively fit all the destinations multiplied by their
+ respective weights.
+
comment 'IPVS application helper'
config IP_VS_FTP
diff --git a/net/netfilter/ipvs/Makefile b/net/netfilter/ipvs/Makefile
index 67f3f43..3bf979f 100644
--- a/net/netfilter/ipvs/Makefile
+++ b/net/netfilter/ipvs/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_IP_VS_LBLC) += ip_vs_lblc.o
obj-$(CONFIG_IP_VS_LBLCR) += ip_vs_lblcr.o
obj-$(CONFIG_IP_VS_DH) += ip_vs_dh.o
obj-$(CONFIG_IP_VS_SH) += ip_vs_sh.o
+obj-$(CONFIG_IP_VS_MH) += ip_vs_mh.o
obj-$(CONFIG_IP_VS_SED) += ip_vs_sed.o
obj-$(CONFIG_IP_VS_NQ) += ip_vs_nq.o
--
1.8.3.1
--
Inju Song
NAVER Corporation
--
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