net: ipv6: fix alignment errors on ARM

Commands "ping6" and "tftpboot ... -ipv6" did not work on ARM because
machine code expects 4-byte alignment and some structures from net6.h
are not aligned in memory.

Fix by adding __packed, since it is already used in this file.

Signed-off-by: Sergei Antonov <saproj@gmail.com>
Reviewed-by: Viacheslav Mitrofanov <v.v.mitrofanov@yadro.com>

diff --git a/include/net6.h b/include/net6.h
index 9b3de028e6dcf06af798076dd788dbffb4afda4d..2d7c5a09604627147f789a02019b69cc1d2de4d3 100644 (file)
--- a/include/net6.h
+++ b/include/net6.h
@@ -24,7 +24,7 @@ struct in6_addr {
 #define s6_addr                in6_u.u6_addr8
 #define s6_addr16      in6_u.u6_addr16
 #define s6_addr32      in6_u.u6_addr32
-};
+} __packed;
 
 #define IN6ADDRSZ      sizeof(struct in6_addr)
 #define INETHADDRSZ    sizeof(net_ethaddr)
@@ -62,7 +62,7 @@ struct ip6_hdr {
        u8              hop_limit;
        struct in6_addr saddr;
        struct in6_addr daddr;
-};
+} __packed;
 #define IP6_HDR_SIZE (sizeof(struct ip6_hdr))
 
 /* struct udp_hdr - User Datagram Protocol header */
@@ -164,7 +164,7 @@ struct icmp6hdr {
 #define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed
 #define icmp6_addrconf_other   icmp6_dataun.u_nd_ra.other
 #define icmp6_rt_lifetime      icmp6_dataun.u_nd_ra.rt_lifetime
-};
+} __packed;
 
 extern struct in6_addr const net_null_addr_ip6;        /* NULL IPv6 address */
 extern struct in6_addr net_gateway6;   /* Our gateways IPv6 address */