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

[Ashok Byahatti]

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.