[Scst-devel] Kernel 3.14.10 build issue

[Igor N. <ig...@no...>]

When building SCST 3.0 rev5661 it fails with:

make -C /lib/modules/3.14.10/build 
SCST_INC_DIR=/usr/src/scst-svn-3.0-rev5661/iscsi-scst/../scst/include 
SUBDIRS=/usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel modules
make[2]: Entering directory `/usr/src/linux-3.14.10'
   CC [M]  /usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel/iscsi.o
   CC [M] /usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel/nthread.o
   CC [M]  /usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel/config.o
   CC [M]  /usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel/digest.o
   CC [M]  /usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel/conn.o
/usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel/conn.c: In function 
'iscsi_get_initiator_ip':
/usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel/conn.c:183:44: error: 
'struct sock_common' has no member named 'skc_v6_daddr'
make[3]: *** [/usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel/conn.o] 
Error 1
make[2]: *** [_module_/usr/src/scst-svn-3.0-rev5661/iscsi-scst/kernel] 
Error 2
make[2]: Leaving directory `/usr/src/linux-3.14.10'
make[1]: *** [mods] Error 2
make[1]: Leaving directory `/usr/src/scst-svn-3.0-rev5661/iscsi-scst'
make: *** [iscsi] Error 2


The kernel has IPV6 disabled entirely during build.
It seems that kernel cuts these struct members when built without IPv6:

#if IS_ENABLED(CONFIG_IPV6)
struct in6_addr         skc_v6_daddr;
struct in6_addr         skc_v6_rcv_saddr;
#endif

Maybe we should check for the availability of IPv6 during SCST build too?
With 3.12 kernel it built fine without IPv6.