iscsitarget: resolve build error if CONFIG_IPV6 config is not enabled

The element skc_v6_daddr (in struct sock_common) is defined in
kernel source only when CONFIG_IPV6 is enabled. Hence, access
sk_v6_daddr element (i.e __sk_common.skc_v6_daddr) only when CONFIG_IPV6
is defined; to fix below error in world build:

-- snip --
/home/jenkins/oe/world/shr-core/tmp-glibc/work-shared/qemux86/kernel-source/include/net/sock.h:330:33: error: 'struct sock_common' has no member named 'skc_v6_daddr'
-- CUT --

Signed-off-by: Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

2 files changed, 29 insertions, 0 deletions

diff --git a/meta-networking/recipes-extended/iscsitarget/files/access-sk_v6_daddr-iff-IPV6-defined.patch b/meta-networking/recipes-extended/iscsitarget/files/access-sk_v6_daddr-iff-IPV6-defined.patch
new file mode 100644
index 000000000..4444234b2
--- /dev/null
+++ b/meta-networking/recipes-extended/iscsitarget/files/access-sk_v6_daddr-iff-IPV6-defined.patch
@@ -0,0 +1,28 @@
+The element skc_v6_daddr (in struct sock_common) is defined in 
+kernel source only when CONFIG_IPV6 is enabled. Hence, access 
+sk_v6_daddr element (i.e __sk_common.skc_v6_daddr) only when CONFIG_IPV6 
+is defined; to fix below error in world build:
+
+-- snip --
+/home/jenkins/oe/world/shr-core/tmp-glibc/work-shared/qemux86/kernel-source/include/net/sock.h:330:33: error: 'struct sock_common' has no member named 'skc_v6_daddr'
+-- CUT --
+
+Upstream-Status: Pending
+
+Signed-off-by: Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com>
+
+--- iscsitarget-1.4.20.3+svn502_org/kernel/conn.c       2015-12-29 21:57:50.547932217 -0800
++++ iscsitarget-1.4.20.3+svn502/kernel/conn.c   2015-12-29 22:47:25.254657627 -0800
+@@ -46,10 +46,12 @@ void conn_info_show(struct seq_file *seq
+                        snprintf(buf, sizeof(buf),
+                                 "%pI4", &inet_sk(sk)->inet_daddr);
+                        break;
++#if defined(CONFIG_IPV6)
+                case AF_INET6:
+                        snprintf(buf, sizeof(buf), "[%pI6]",
+                                 &(sk)->sk_v6_daddr);
+                        break;
++#endif /* defined(CONFIG_IPV6) */
+                default:
+                        break;
+                }
diff --git a/meta-networking/recipes-extended/iscsitarget/iscsitarget_1.4.20.3+svn502.bb b/meta-networking/recipes-extended/iscsitarget/iscsitarget_1.4.20.3+svn502.bb
index c96810b21..b327f8649 100644
--- a/meta-networking/recipes-extended/iscsitarget/iscsitarget_1.4.20.3+svn502.bb
+++ b/meta-networking/recipes-extended/iscsitarget/iscsitarget_1.4.20.3+svn502.bb
@@ -11,6 +11,7 @@ DEPENDS = "openssl virtual/kernel"
 SRC_URI = "http://ftp.heanet.ie/mirrors/ubuntu/pool/universe/i/${BPN}/${BPN}_${PV}.orig.tar.gz \
            file://use-kernel-makefile-to-get-kernel-version.patch \
            file://fix-errors-observed-with-linux-3.19-and-greater.patch \
+           file://access-sk_v6_daddr-iff-IPV6-defined.patch \
           "
 SRC_URI[md5sum] = "ef9bc823bbabd3c772208c00d5f2d089"
 SRC_URI[sha256sum] = "d3196ccb78a43266dce28587bfe30d8ab4db7566d7bce96057dfbb84100babb5"