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Commit 30edf801 authored by Inju Song's avatar Inju Song Committed by Simon Horman
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netfilter: ipvs: Add configurations of Maglev hashing 



To build the maglev hashing scheduler, add some configuration
to Kconfig and Makefile.

 - The compile configurations of MH are added to the Kconfig.

 - The MH build rule is added to the Makefile.

Signed-off-by: default avatarInju Song <inju.song@navercorp.com>
Signed-off-by: default avatarJulian Anastasov <ja@ssi.bg>
Signed-off-by: default avatarSimon Horman <horms@verge.net.au>
parent 039f32e8

net/netfilter/ipvs/Kconfig

+37 −0
Original line number Diff line number Diff line
@@ -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

net/netfilter/ipvs/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 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