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;
 		}