[LEDE-DEV] [PATCH] Add ip_vs kernel netfilter modules to enable load balancing, capabilities

[Mauro Mozzarelli]

To obtain a functional Load Balancer, in addition to the kernel modules 
we require also the "ipvsadm" tool which is used to create and manage 
the load balancer kernel table.

I prepared a separate package that includes other than ipvsadm also the 
necessary startup and configuration scripts conforming with openwrt/lede 
standards.

The package fits in /package/network/utils.

Please could you let me know whether I can post the patch to add ipvsadm 
here or if I have to follow a different process?


Mauro


On 28/02/17 11:52, Mauro Mozzarelli wrote:
> Hello John,
>
>
> I sent the first patch using the output of git show, but there was 
> something wrong and it was suggested to use git format-patch, so I 
> sent the last using the following method:
>
> I do a git pull for trunk first, then inside the trunk directory:
>
> 1. git checkout -b ipvs
> 2. I apply my changes
> 3. git add path to changed file(s)
> 4. git commit and edit comments
> 5. git show to show <commit> id.
>    and
>    git format-patch -1 <commit>
>
> Then I take the output from git format-patch and I post it to the 
> mailing list.
>
> Please could you let me know what would be the correct procedure?
>
>
> Mauro
>
>
>
> On 27/02/17 10:30, John Crispin wrote:
>>
>> On 24/02/2017 12:42, Mauro Mozzarelli wrote:
>>> IPVS (IP Virtual Server) implements transport-layer load balancing
>>> inside the Linux kernel, so called Layer-4 switching. IPVS running on a
>>> host acts as a load balancer at the front of a cluster of real servers,
>>> it can direct requests for TCP/UDP based services to the real servers,
>>> and makes services of the real servers to appear as a virtual 
>>> service on
>>> a single IP address.
>>>
>>> This patch adds kmod-nf-ipvs kernel modules option to LEDE kernel 
>>> netfilter
>>>
>>> Signed-off-by: Mauro Mozzarelli <mauro at ezplanet.org>
>> Hi Mauro,
>>
>> How do you send your patches ? patchwork fails to pick them up properly
>>
>> https://patchwork.ozlabs.org/patch/732113/
>>
>>     John
>>
>>
>>> ---
>>>   package/kernel/linux/modules/netfilter.mk | 89
>>> +++++++++++++++++++++++++++++++
>>>   1 file changed, 89 insertions(+)
>>>
>>> diff --git a/package/kernel/linux/modules/netfilter.mk
>>> b/package/kernel/linux/modules/netfilter.mk
>>> index 6162dbc..9cef8fd 100644
>>> --- a/package/kernel/linux/modules/netfilter.mk
>>> +++ b/package/kernel/linux/modules/netfilter.mk
>>> @@ -77,6 +77,17 @@ endef
>>>   $(eval $(call KernelPackage,nf-conntrack))
>>>
>>>
>>> +define KernelPackage/nf-conntrack-ftp
>>> +  SUBMENU:=$(NF_MENU)
>>> +  TITLE:=FTP connection tracking
>>> +  KCONFIG:=CONFIG_NF_CONNTRACK_FTP
>>> +  DEPENDS:=kmod-nf-conntrack
>>> +  FILES:=$(LINUX_DIR)/net/netfilter/nf_conntrack_ftp.ko
>>> +endef
>>> +
>>> +$(eval $(call KernelPackage,nf-conntrack-ftp))
>>> +
>>> +
>>>   define KernelPackage/nf-conntrack6
>>>     SUBMENU:=$(NF_MENU)
>>>     TITLE:=Netfilter IPv6 connection tracking
>>> @@ -271,6 +282,84 @@ define KernelPackage/ipt-ipset
>>>   endef
>>>   $(eval $(call KernelPackage,ipt-ipset))
>>>
>>> +IPVS_MODULES:= \
>>> +    ipvs/ip_vs \
>>> +    ipvs/ip_vs_lc \
>>> +    ipvs/ip_vs_wlc \
>>> +    ipvs/ip_vs_rr \
>>> +    ipvs/ip_vs_wrr \
>>> +    ipvs/ip_vs_lblc \
>>> +    ipvs/ip_vs_lblcr \
>>> +    ipvs/ip_vs_dh \
>>> +    ipvs/ip_vs_sh \
>>> +    ipvs/ip_vs_fo \
>>> +    ipvs/ip_vs_ovf \
>>> +    ipvs/ip_vs_nq \
>>> +    ipvs/ip_vs_sed \
>>> +    xt_ipvs
>>> +
>>> +define KernelPackage/nf-ipvs
>>> +  SUBMENU:=Netfilter Extensions
>>> +  TITLE:=IP Virtual Server modules
>>> +  DEPENDS:=@IPV6 +kmod-lib-crc32c +kmod-ipt-conntrack 
>>> +kmod-nf-conntrack
>>> +  KCONFIG:= \
>>> +    CONFIG_IP_VS \
>>> +    CONFIG_IP_VS_IPV6=y \
>>> +    CONFIG_IP_VS_DEBUG=n \
>>> +    CONFIG_IP_VS_PROTO_TCP=y \
>>> +    CONFIG_IP_VS_PROTO_UDP=y \
>>> +    CONFIG_IP_VS_PROTO_AH_ESP=y \
>>> +    CONFIG_IP_VS_PROTO_ESP=y \
>>> +    CONFIG_IP_VS_PROTO_AH=y \
>>> +    CONFIG_IP_VS_PROTO_SCTP=y \
>>> +    CONFIG_IP_VS_TAB_BITS=12 \
>>> +    CONFIG_IP_VS_RR \
>>> +    CONFIG_IP_VS_WRR \
>>> +    CONFIG_IP_VS_LC \
>>> +    CONFIG_IP_VS_WLC \
>>> +    CONFIG_IP_VS_FO \
>>> +    CONFIG_IP_VS_OVF \
>>> +    CONFIG_IP_VS_LBLC \
>>> +    CONFIG_IP_VS_LBLCR \
>>> +    CONFIG_IP_VS_DH \
>>> +    CONFIG_IP_VS_SH \
>>> +    CONFIG_IP_VS_SED \
>>> +    CONFIG_IP_VS_NQ \
>>> +    CONFIG_IP_VS_SH_TAB_BITS=8 \
>>> +    CONFIG_IP_VS_NFCT=y \
>>> +    CONFIG_NETFILTER_XT_MATCH_IPVS
>>> +
>>> +  FILES:=$(foreach
>>> mod,$(IPVS_MODULES),$(LINUX_DIR)/net/netfilter/$(mod).ko)
>>> +  $(call AddDepends/ipt,+kmod-ipt-conntrack,+kmod-nf-conntrack)
>>> +endef
>>> +$(eval $(call KernelPackage,nf-ipvs))
>>> +
>>> +define KernelPackage/nf-ipvs/description
>>> + IPVS (IP Virtual Server) implements transport-layer load balancing
>>> inside the Linux kernel
>>> + so called Layer-4 switching.
>>> +endef
>>> +
>>> +define KernelPackage/nf-ipvs-ftp
>>> +  SUBMENU:=$(NF_MENU)
>>> +  TITLE:=Virtual Server FTP protocol support
>>> +  KCONFIG:=CONFIG_IP_VS_FTP
>>> +  DEPENDS:=kmod-nf-ipvs +kmod-nf-nat +kmod-nf-conntrack-ftp
>>> +  FILES:=$(LINUX_DIR)/net/netfilter/ipvs/ip_vs_ftp.ko
>>> +endef
>>> +
>>> +$(eval $(call KernelPackage,nf-ipvs-ftp))
>>> +
>>> +
>>> +define KernelPackage/nf-ipvs-sip
>>> +  SUBMENU:=$(NF_MENU)
>>> +  TITLE:=Virtual Server SIP protocol support
>>> +  KCONFIG:=CONFIG_IP_VS_PE_SIP
>>> +  DEPENDS:=kmod-nf-ipvs +kmod-nf-nathelper-extra
>>> +  FILES:=$(LINUX_DIR)/net/netfilter/ipvs/ip_vs_pe_sip.ko
>>> +endef
>>> +
>>> +$(eval $(call KernelPackage,nf-ipvs-sip))
>>> +
>>>
>>>   define KernelPackage/ipt-nat
>>>     TITLE:=Basic NAT targets
>