[ovs-discuss] Error - build kernel module (openvswitch-2.0.0.tar.gz) on RHEL 7 Beta

[Joe Stringer]

It looks like this function was backported to your kernel version,
which is why you see the conflict. The OVS compatibility header checks
for linux 3.12, and defines the function if you're running any earlier
version.

On 3 January 2014 11:42, Ashok Byahatti <ashok.byahatti at embrane.com> wrote:
> Hi Jesse,
>
> I tried to build the kernel rpm using the master version(and generating tar openvswitch-2.1.90.tar.gz).
> But I still get one error -
> /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/compat/include/net/sctp/checksum.h:8:22: error: redefinition of 'sctp_compute_cksum'
>  static inline __le32 sctp_compute_cksum(const struct sk_buff *skb.
>
> I am pasting the snippet of the log below -
>
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/flex_array.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/flow_dissector.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/gre.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/gso.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/genetlink-openvswitch.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/hash.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/hash-x86.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/ip_tunnels_core.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/netdevice.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/net_namespace.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/reciprocal_div.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/skbuff-openvswitch.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/vxlan.c
> ln -s /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/../linux/compat/utils.c
> /usr/bin/make -C /usr/src/kernels/3.10.0-54.0.1.el7.x86_64 M=/root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux modules
> make[1]: Entering directory `/usr/src/kernels/3.10.0-54.0.1.el7.x86_64'
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/actions.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/datapath.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/dp_notify.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/flow.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/flow_netlink.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/flow_table.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/vport.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/vport-gre.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/vport-internal_dev.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/vport-lisp.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/vport-netdev.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/vport-vxlan.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/dev-openvswitch.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/exthdrs_core.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/flex_array.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/flow_dissector.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/gre.o
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/gso.o
> In file included from /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/actions.c:35:0:
> /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/compat/include/net/sctp/checksum.h:8:22: error: redefinition of 'sctp_compute_cksum'
>  static inline __le32 sctp_compute_cksum(const struct sk_buff *skb,
>                       ^
> In file included from /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/../datapath/linux/compat/include/net/sctp/checksum.h:5:0,
>                  from /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/actions.c:35:
> include/net/sctp/checksum.h:89:22: note: previous definition of 'sctp_compute_cksum' was here
>  static inline __le32 sctp_compute_cksum(const struct sk_buff *skb,
>                       ^
>   CC [M]  /root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/genetlink-openvswitch.o
> make[2]: *** [/root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux/actions.o] Error 1
> make[2]: *** Waiting for unfinished jobs....
> make[1]: *** [_module_/root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux] Error 2
> make[1]: Leaving directory `/usr/src/kernels/3.10.0-54.0.1.el7.x86_64'
> make: *** [default] Error 2
> make: Leaving directory `/root/rpmbuild/BUILD/openvswitch-2.1.90/_default/datapath/linux'
> error: Bad exit status from /var/tmp/rpm-tmp.E3vySV (%build)
>
> Thanks,
> Ashok
>
> -----Original Message-----
> From: Jesse Gross [mailto:jesse at nicira.com]
> Sent: Thursday, January 02, 2014 10:43 AM
> To: Ashok Byahatti
> Cc: bugs at openvswitch.org
> Subject: Re: [ovs-discuss] Error - build kernel module (openvswitch-2.0.0.tar.gz) on RHEL 7 Beta
>
> On Mon, Dec 30, 2013 at 1:46 PM, Ashok Byahatti <ashok.byahatti at embrane.com> wrote:
>> I was trying to build the Open vSwitch kernel module(using
>> openvswitch-2.0.0.tar.gz) on RHEL 7 Beta .
>>
>> My kernel version is 3.10.0-54.0.1.el7.x86_64 .
>
> I would recommend using master or the version of the OVS kernel module packaged with the distribution. I am not really eager to backport the necessary changes to OVS 2.0, particularly for a beta release.
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